CN1928463A - Absorption chiller with triple function - Google Patents
Absorption chiller with triple function Download PDFInfo
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- CN1928463A CN1928463A CNA2006101291048A CN200610129104A CN1928463A CN 1928463 A CN1928463 A CN 1928463A CN A2006101291048 A CNA2006101291048 A CN A2006101291048A CN 200610129104 A CN200610129104 A CN 200610129104A CN 1928463 A CN1928463 A CN 1928463A
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- 238000010521 absorption reaction Methods 0.000 title claims abstract description 62
- 239000003507 refrigerant Substances 0.000 claims abstract description 243
- 239000006096 absorbing agent Substances 0.000 claims abstract description 80
- 238000010438 heat treatment Methods 0.000 claims abstract description 47
- 239000007788 liquid Substances 0.000 claims description 230
- 238000009833 condensation Methods 0.000 claims description 126
- 230000005494 condensation Effects 0.000 claims description 126
- 230000008676 import Effects 0.000 claims description 60
- 230000033228 biological regulation Effects 0.000 claims description 24
- 238000001704 evaporation Methods 0.000 claims description 24
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- 230000001105 regulatory effect Effects 0.000 claims description 13
- 238000001514 detection method Methods 0.000 claims description 11
- 238000009795 derivation Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 46
- 239000007789 gas Substances 0.000 description 39
- 239000012530 fluid Substances 0.000 description 37
- 239000006193 liquid solution Substances 0.000 description 31
- 230000006870 function Effects 0.000 description 30
- 239000002826 coolant Substances 0.000 description 24
- 239000000498 cooling water Substances 0.000 description 21
- 238000007600 charging Methods 0.000 description 17
- 238000012546 transfer Methods 0.000 description 13
- 239000002912 waste gas Substances 0.000 description 13
- 239000000446 fuel Substances 0.000 description 11
- 239000007921 spray Substances 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 230000009471 action Effects 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 238000012937 correction Methods 0.000 description 5
- 238000007710 freezing Methods 0.000 description 5
- 230000008014 freezing Effects 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000005755 formation reaction Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 206010062717 Increased upper airway secretion Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
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- 230000007613 environmental effect Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 230000004941 influx Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
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- 208000026435 phlegm Diseases 0.000 description 1
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- 229920006395 saturated elastomer Polymers 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/62—Absorption based systems
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- Sorption Type Refrigeration Machines (AREA)
Abstract
The invention provides a triple-effect absorption refrigerating machine capable of suppressing energy loss. The triple-effect absorption refrigerating machine 1 comprises an absorber A for changing solution S into diluted solution Sw having lower concentration, a low temperature regenerator G1 for heating the diluted solution Sw to evaporate refrigerant and increase the concentration, a medium temperature regenerator G2 for heating the diluted solution Sw to evaporate the refrigerant at a higher temperature than that in the low temperature regenerator G1 and increase the concentration, a high temperature regenerator G3 for heating the introduced diluted solution Sw to evaporate the refrigerant at a higher temperature than that in the medium temperature regenerator G2 and increase the concentration, a medium temperature solution pump 12 for feeding the diluted solution Sw from the absorber A into the medium temperature regenerator G2, and a high temperature solution pump 13 for feeding the diluted solution Sw from the absorber A into the high temperature regenerator G3. The proper amount of diluted solution is stably supplied to the high temperature regenerator and the medium temperature regenerator without providing a resistor at the entrance of the medium temperature regenerator, thus suppressing energy loss.
Description
Technical field
The present invention relates to the absorption refrigerating machine of triple function, especially relate to when suppressing energy loss, can stably supply with the absorption refrigerating machine of the triple function of solution to each regenerator.
Background technology
In recent years, improving for the environmental consciousness of the earth, and on the other hand, worrying that but the obvious increase of energy expenditure impacts environment.So-called Effectiveness of Kyoto Agreement now, in order to realize the target of the reduction greenhouse gases that various countries determine, advancing further energy-conservation is urgent subject.Wherein, as use the absorption refrigerating machine that is the center, in office or mansion etc., extensively adopts with business, wait in expectation and popularize the absorption refrigerating machine of the higher triple function of energy saving.
The absorption refrigerating machine of triple function has high-temp regenerator, middle temperature regenerator and three regenerators of low-temperature regenerator in absorption refrigerating machine, high-temp regenerator makes refrigerant evaporate from the weak solution that has absorbed refrigerant by absorber under the highest temperature; In warm regenerator with the temperature that is lower than high-temp regenerator refrigerant is evaporated from weak solution; Low-temperature regenerator is that the temperature with warm regenerator in being lower than is evaporated refrigerant from weak solution, the cold media gas that will evaporate in high-temp regenerator guides, with the heat of this cold media gas refrigerant is evaporated from weak solution to middle temperature regenerator, will be at the cold media gas of middle temperature regenerator evaporation to the low-temperature regenerator guiding, refrigerant be evaporated from weak solution with the heat of this refrigerant steam, by such reduction render to heat in the regenerator fuel of heat (or be used to produce), realization is energy-conservation.Mostly the absorption refrigerating machine of existing triple function is with a pump, will have absorbed the weak solution of refrigerant to high-temp regenerator, middle temperature regenerator and low-temperature regenerator liquor charging (for example with reference to patent documentation 1) by absorber.
[patent documentation 1] spy opens 2000-17123 communique (Fig. 1 etc.)
But, if with a pump to three regenerator liquor chargings, then need pump high-lift, big flow.And, owing to determine the necessary lift of pump with the interior pressure of the highest high-temp regenerator of pressure, therefore, in order to regulate the influx of weak solution to middle temperature regenerator and low-temperature regenerator, need have the parts (valve etc.) of the pressure loss of the pressure differential that is equivalent to high-temp regenerator and each regenerator in the inlet setting of these two regenerators, this has just formed energy loss.And, if, then, need control valve be set at the entrance side or the outlet side of each regenerator in order stably to supply with weak solution to middle temperature regenerator and low-temperature regenerator according to the variation of the interior pressure of high-temp regenerator, the rotary speed of regulating pump.
The present invention is in view of above-mentioned problem, and purpose provides when suppressing energy loss, can stably supply with the absorption refrigerating machine of the triple function of solution to each regenerator.
Summary of the invention
To achieve these goals, the absorption refrigerating machine of the triple function of technical scheme 1 described invention as shown in Figure 1, have: absorber A, low-temperature regenerator G1, middle temperature regenerator G2, high-temp regenerator G3, middle temperature solution pump 12 and pyrosol pump 13, absorber A are to absorb refrigerant steam Vs, solution S is become reduced the weak solution Sw of concentration with solution S; Low-temperature regenerator G1 imports weak solution Sw from absorber A, makes refrigerant evaporation, concentration is risen by heat dilute solution Sw; In warm regenerator G2 import weak solution Sw from absorber A, use than temperature high among the low-temperature regenerator G1 by heat dilute solution Sw to make refrigerant evaporation, concentration is risen; High-temp regenerator G3 imports weak solution Sw from absorber A, uses than high temperature among the middle temperature regenerator G2 by heat dilute solution Sw to make refrigerant evaporation, concentration is risen; In warm solution pump 12 from absorber A with weak solution Sw to warm regenerator G2 liquor charging; Pyrosol pump 13 from absorber A with weak solution Sw to high-temp regenerator G3 liquor charging, be the pump that separates with middle temperature solution pump 12.
If form such structure, then owing to have weak solution to the middle temperature solution pump of middle temperature regenerator liquor charging with to the pyrosol pump of high-temp regenerator liquor charging, therefore, big resistance is not set and just can stably supplies with an amount of weak solution, can suppress energy loss to high-temp regenerator and middle temperature regenerator at the inlet of middle temperature regenerator.And, warm regenerator and low-temperature regenerator, middle temperature solution pump are also carried under the situation of weak solution to low-temperature regenerator in being set up in parallel, big resistance is not set and just can stably supplies with an amount of weak solution, can suppress energy loss to high-temp regenerator, middle temperature regenerator and low-temperature regenerator at the inlet of low-temperature regenerator.
And, as shown in Figure 1, the absorption refrigerating machine of the triple function of technical scheme 2 described inventions is in the absorption refrigerating machine of technical scheme 1 described triple function, high-temp regenerator G3 evaporates refrigerant and high temperature concentrated solution Sh3 side that concentration has risen in derivation from weak solution Sw, have the high-temp regenerator solution tank 23 that accumulates high temperature concentrated solution Sh3; In warm regenerator G2 refrigerant evaporated and middle temperature concentrated solution Sh2 side that concentration has risen from weak solution Sw in derivation, have the middle temperature concentrated solution groove 22 of warm concentrated solution Sh2 in accumulating; Has control device 60, control device 60 adjust pyrosol pumps 13 discharge rate, make in the high-temp regenerator solution tank 23 or the liquid level of the intrinsic high temperature concentrated solution Sh3 of high-temp regenerator G3 forms the first regulation liquid level, simultaneously, the discharge rate of warm solution pump 12 in the adjustment, make in the warm regenerator solution tank 22 or in middle temperature regenerator G2 intrinsic the liquid level of warm concentrated solution Sh2 form the second regulation liquid level.At this, the body of typical high temperature regenerator G3 is meant the major part of the high-temp regenerator G3 that separates with high-temp regenerator solution tank 23.And, typical in the body of warm regenerator G2 be meant the major part of the middle temperature regenerator G2 that separates with middle temperature regenerator solution tank 22.
If form such structure, owing to adjust the discharge rate of pyrosol pump, make in the high-temp regenerator solution tank or the liquid level of the intrinsic high temperature concentrated solution of high-temp regenerator forms the first regulation liquid level, simultaneously, the discharge rate of warm solution pump in the adjustment, make in the warm regenerator solution tank or middle temperature regenerator intrinsic in warm concentrated solution form the second regulation liquid level, therefore, high temperature concentrated solution in the high-temp regenerator and the middle temperature concentrated solution in the middle temperature regenerator can not sneaked into the refrigerant that evaporates and be discharged from each regenerator.
And, as shown in Figure 1, the absorption refrigerating machine of the triple function of technical scheme 3 described inventions is in the absorption refrigerating machine of technical scheme 2 described triple functions, have: high temperature pressure detector 63, high temperature liquid level detector 66, middle temperature and pressure force detector 62 and middle temperature liquid level detector 65, the pressure that high temperature pressure detector 63 detects in the high-temp regenerator G3; High temperature liquid level detector 66 detects in the high-temp regenerator solution tank 23 or high-order liquid level and the low level liquid level of the intrinsic high temperature concentrated solution Sh3 of high-temp regenerator G3; Pressure during middle temperature and pressure force detector 62 detects in the warm regenerator G2; In warm liquid level detector 65 detect in high-order liquid level and the low level liquid level of warm concentrated solution Sh2 in the warm regenerator solution tank 22 or in middle temperature regenerator G2 intrinsic; Constituting of control device 60, the rotary speed that the pressure that detects according to high temperature pressure detector 63 is regulated pyrosol pump 13, and survey at the high temperature liquid level and to make rotary speed reduce, make when detecting the low level liquid level rotary speed to rise when device 66 detects high-order liquid level; Simultaneously, according to the rotary speed of warm solution pump 12 in the pressure adjusting of middle temperature and pressure force detector 62 detections, and when detecting high-order liquid level, middle temperature liquid level detector 65 make rotary speed reduce, when detecting the low level liquid level, make rotary speed to rise.
If form such structure, then owing in high-temp regenerator and middle temperature regenerator, with the pressure in each regenerator, be the rotary speed of benchmark, the pairing solution pump of adjusting, and according to the rotary speed of the pairing solution pump of intrinsic liquid level correction of the solution tank of each regenerator or each regenerator, therefore, increased the stability of the liquid level of solution in each regenerator.
And, as shown in Figure 2, the absorption refrigerating machine of the triple function of technical scheme 4 described inventions is in the absorption refrigerating machine of technical scheme 3 described triple functions, replace high temperature pressure detector 63 (for example with reference to Fig. 1) and have high temperature refrigerant Temperature Detector 69, the temperature that high temperature refrigerant Temperature Detector 69 detects the condensed high temperature condensation of the refrigerant refrigerant Vf3 behind the weak solution Sw heating evaporation in the high-temp regenerator G3; Warm refrigerant temperature detector 68 during temperature and pressure force detector 62 in the replacement (for example with reference to Fig. 1) has, middle temperature refrigerant temperature detector 68 detect with the refrigerant behind the weak solution Sw heating evaporation in the middle temperature regenerator G2 condensed in the temperature of warm condensation refrigerant Vf2; Control device 60 is not according to high temperature pressure detector 63 (for example with reference to Fig. 1) detected pressure but according to the rotary speed of high temperature refrigerant Temperature Detector 69 detected adjustment pyrosol pumps 13, be not according in temperature and pressure force detector 62 (for example with reference to Fig. 1) detected pressure but according to the rotary speed of warm solution pump 12 in the middle temperature refrigerant temperature detector 68 detected adjustment.
If form such structure, then since with high-temp regenerator and middle temperature regenerator in the temperature of pressure with the high temperature condensation refrigerant of dependency relation and middle temperature condensation refrigerant be benchmark, the rotary speed of regulating corresponding solution pump, and according to the rotary speed of the pairing solution pump of liquid level correction of the solution tank of each regenerator, therefore, increased the stability of the liquid level of solution in each regenerator.
Absorption refrigerating machine according to triple function of the present invention, owing to have the middle temperature solution pump of warm regenerator during weak solution sent into and weak solution sent into the pyrosol pump of high-temp regenerator, therefore, can be not big resistance be set and stably supplies with an amount of weak solution, can suppress energy loss to high-temp regenerator and middle temperature regenerator at the inlet of middle temperature regenerator.And, warm regenerator and low-temperature regenerator, middle temperature solution pump are also carried under the situation of weak solution to low-temperature regenerator in being set up in parallel, can be not big resistance be set and stably supplies with an amount of weak solution, can suppress energy loss to high-temp regenerator, middle temperature regenerator and low-temperature regenerator at the inlet of low-temperature regenerator.
Description of drawings
Fig. 1 is the modular system figure of the triple function absorption refrigerating machine of expression embodiments of the present invention.
Fig. 2 is the modular system figure of variation of the triple function absorption refrigerating machine of expression embodiments of the present invention.
Fig. 3 is the part system diagram that expression forms absorber and evaporimeter the absorption refrigerating machine of multistage triple function.
Fig. 4 is the figure as the high-temp regenerator of direct current cooker.(a) be that longitudinal section, (b) are the vertical views of oven body part.
Fig. 5 uses the part system diagram that carries out the solution system of recuperation of heat to the weak solution of middle temperature regenerator and low-temperature regenerator conveying from the condensation refrigerant.(a) be to connect respectively cryogenic fluid heat exchanger and middle temperature condensation refrigerant solution heat exchanger are set, and the part system diagram of middle temperature solution heat exchanger and high temperature condensation refrigerant solution heat exchanger, (b) be to be set up in parallel cryogenic fluid heat exchanger and middle temperature condensation refrigerant solution heat exchanger respectively, and the part system diagram of middle temperature solution heat exchanger and high temperature condensation refrigerant solution heat exchanger, (c) be middle temperature condensation refrigerant solution heat exchanger and the high temperature condensation refrigerant solution heat exchanger that series connection relatively is provided with, be set up in parallel the part system diagram of cryogenic fluid heat exchanger and middle temperature solution heat exchanger.
Fig. 6 is that expression uses the weak solution of carrying to high-temp regenerator to carry out the part system diagram of the solution system of recuperation of heat from the condensation refrigerant.(a) be the part system diagram of warm condensation refrigerant solution heat exchanger and high temperature condensation refrigerant solution heat exchanger during series connection is provided with, (b) be to the middle temperature condensation refrigerant solution heat exchanger of the setting of connecting and the part system diagram that high temperature condensation refrigerant solution heat exchanger imports the structure of a part of weak solution respectively, (c) be the part system diagram that the high-temperature solution heat exchanger of middle temperature condensation refrigerant solution heat exchanger that series connection is provided with and the relative absorber side of high temperature condensation refrigerant solution heat exchanger is set up in parallel.
Fig. 7 is the solution system of recuperation of heat is carried out in expression to weak solution from the waste gas of high-temp regenerator discharge a part system diagram.(a) being to connect respectively the part system diagram of cryogenic fluid heat exchanger and off-gas liquid solution heat exchanger and middle temperature solution heat exchanger and off-gas liquid solution heat exchanger, high-temperature solution heat exchanger and off-gas liquid solution heat exchanger is set, (b) is the part system diagram that is set up in parallel cryogenic fluid heat exchanger and off-gas liquid solution heat exchanger and middle temperature solution heat exchanger and off-gas liquid solution heat exchanger, high-temperature solution heat exchanger and off-gas liquid solution heat exchanger respectively.
The specific embodiment
Below, describe with regard to embodiments of the present invention with reference to accompanying drawing.Device identical or suitable mutually in each figure uses identical or similar symbol, omits repeat specification.In addition, dotted line is represented control signal in Fig. 1,2,3,4 (a).
At first, describe with regard to the structure of the absorption refrigerating machine 1 (following is called " absorption refrigerating machine 1 ") of the triple function of embodiments of the present invention with reference to Fig. 1.Fig. 1 is the modular system figure of the absorption refrigerating machine 1 of expression embodiments of the present invention.Absorption refrigerating machine 1 has absorber A, low-temperature regenerator G1, middle temperature regenerator G2, high-temp regenerator G3, condenser C, evaporimeter E, middle temperature solution pump 12, pyrosol pump 13, cryogenic fluid heat exchanger 31, middle temperature solution heat exchanger 32, high-temperature solution heat exchanger 33 and control device 60.
Absorber A makes solution S absorb the device of the refrigerant steam Vs of evaporimeter E generation.Be typically, refrigerant makes water, solution S use lithium bromide (LiBr), but is not limited thereto, and also can use the combination of other refrigerants, solution (absorbent).In absorber A, cooling water pipe 71 is arranged on inside, this cooling water pipe 71 flows the cooling water q that removes the absorption heat that produces when solution S absorbs refrigerant steam Vs.In absorber A, be arranged on the top of cooling water pipe 71 with being sprayed at concentrated solution spreader nozzle 72 that regenerate among each regenerator G1～G3, the solution S of concentration after improving.The bottom of absorber A becomes the storage portion 73 that absorbs refrigerant steam Vs, stores the weak solution Sw after concentration reduces.In storage portion 73, be connected with weak solution Sw towards the weak solution delivery line 42 of low-temperature regenerator G1 and middle temperature regenerator G2 derivation and the weak solution delivery line 43 that weak solution Sw is derived towards high-temp regenerator G3.Absorber A is communicated with evaporimeter E on top, the refrigerant steam Vs that evaporates in evaporimeter E can be imported absorber A.
Low-temperature regenerator G1 is the device that imports weak solution Sw, makes refrigerant evaporation, concentration is risen by heat dilute solution Sw from absorber A.Top in low-temperature regenerator G1 is provided with the weak solution spreader nozzle 51a that sprays the weak solution Sw that imports.And on low-temperature regenerator G1, the heating that is used to make the refrigerant steam Vm as the heating source of heat dilute solution Sw to flow is arranged on the below of weak solution spreader nozzle 51a with steam pipe 51.This is provided with heating is called low-temperature regenerator G1 with the part of steam pipe 51 body.Refrigerant steam Vm is imported heating with steam pipe 51, and this refrigerant steam Vm has mixed the middle temperature refrigerant steam Vs2 that evaporates and the high temperature refrigerant steam Vs3 that evaporates at the condensed high temperature condensation of middle temperature regenerator G2 refrigerant Vf3 in high-temp regenerator G3 in middle temperature regenerator G2.Low-temperature regenerator G1 is communicated with condenser C on top, utilizes the heat of refrigerant steam Vm can move to condenser C from the low temperature refrigerant steam Vs1 that weak solution Sw evaporates.
And, be provided with low-temperature regenerator solution tank 21 in the bottom of low-temperature regenerator G1, the low temperature concentrated solution Sh1 after this low-temperature regenerator solution tank 21 accumulates that refrigerant evaporates from weak solution Sw, concentration rises.Typical low-temperature regenerator solution tank 21 is the bottoms that are integrally formed in low-temperature regenerator G1 with low-temperature regenerator G1, but for example also the container with specified volume can be separated physically with low-temperature regenerator G1 and utilizes pipeline be connected to form, as the part of low-temperature regenerator G1.And low-temperature regenerator solution tank 21 also can not be container shapes but pipeline.Is under the situation of one at low-temperature regenerator solution tank 21 with low-temperature regenerator G1, sometimes the body double as low-temperature regenerator solution tank 21 of low-temperature regenerator G1.The low temperature concentrated solution delivery line 44 of deriving low temperature concentrated solution Sh1 is connected on the low-temperature regenerator solution tank 21.Low temperature concentrated solution delivery line 44 collaborates, is connected with the concentrated solution spreader nozzle 72 of absorber A with high temperature concentrated solution delivery line 46 by cryogenic fluid heat exchanger 31 backs.
In warm regenerator G2 be the device that imports weak solution Sw, makes refrigerant evaporation, concentration is risen with the temperature that is higher than the low-temperature regenerator G1 by heat dilute solution Sw from absorber A.Top in middle temperature regenerator G2 is provided with the weak solution spreader nozzle 52a that sprays the weak solution Sw that imports.And, in middle temperature regenerator G2, be used to make the mobile heating steam pipe 52 of refrigerant steam Vs3 as the heating source of heat dilute solution Sw, be arranged on the below of weak solution spreader nozzle 52a.With this be provided with heating be called with the part of steam pipe 52 in the body of warm regenerator G2.The high temperature refrigerant steam Vs3 that will evaporate in high-temp regenerator G3 imports heating steam pipe 52.High temperature condensation refrigerant pipe 56 is connected heating with on the steam pipe 52, and this high temperature condensation refrigerant pipe 56 flows the condensed high temperature condensation of the high temperature refrigerant steam Vs3 refrigerant Vf3 that is reduced phlegm and internal heat by weak solution Sw.And, the top of warm regenerator G2 during middle temperature refrigerant steam pipe 55 is connected, warm refrigerant steam pipe 55 is derived the heat warm refrigerant steam Vs2 from weak solution Sw evaporation that utilizes high temperature refrigerant steam Vs3 in this.In warm refrigerant steam pipe 55 be connected with steam pipe 51 with the heating of low-temperature regenerator G1.And high temperature condensation refrigerant pipe 56 is connected halfway with middle temperature refrigerant steam pipe 55.On middle temperature regenerator G2 pressure sensor 62 is set, this pressure sensor 62 is as the pressure detector of warm regenerator G2 internal pressure in detecting.Pressure during pressure sensor 62 can detect in the warm regenerator G2 gets final product, therefore, and near the middle temperature refrigerant steam pipe 55 in also can being arranged on the warm regenerator G2.Pressure sensor 62 utilizes signal cable to be connected with control device 60, pressure sensor 62 detected pressure signals can be sent to control device 60.
Warm regenerator solution tank 22 on middle temperature regenerator G2, being provided with, middle temperature regenerator solution tank 22 be used for accumulating refrigerant after weak solution Sw evaporation, concentration rise warm concentrated solution Sh2.The bottom of warm regenerator G2 during warm regenerator solution tank 22 is integrally formed in middle temperature regenerator G2 in typical, but for example also container with specified volume and middle temperature regenerator G2 can be separated physically, utilize pipeline be connected to form, as in the part of warm regenerator G2.And middle temperature regenerator solution tank 22 also can not be container shapes but pipeline.Is under the situation of one at middle temperature regenerator solution tank 22 with middle temperature regenerator G2, sometimes in warm regenerator solution tank 22 in the body double as of warm regenerator G2.In the temperature of the liquid level pressure in the warm regenerator G2, weak solution Sw in being subjected to or concentration control of warm regenerator solution tank 22, also be subjected to the flow-control of the weak solution Sw that therefrom warm solution pump 12 carries to middle temperature regenerator G2.During the middle temperature concentrated solution delivery line 45 of warm concentrated solution Sh2 is connected in the derivation on the warm regenerator solution tank 22.In warm concentrated solution delivery line 45 be connected with low temperature concentrated solution delivery line 44 by middle temperature solution heat exchanger 32 backs.Warm liquid level detector 65 in being provided with on middle temperature regenerator solution tank 22, warm liquid level detector 65 has the high-order liquid level sensor 65H of the high-order liquid level that detects the middle temperature concentrated solution Sh2 that accumulates in its inside and the low level liquid level sensor 65L of detection low level liquid level in this.Typical high-order liquid level sensor 65H and low level liquid level sensor 65L use electrode bar.Between high-order liquid level sensor 65H and low level liquid level sensor 65L and control device 60, lay signal cable respectively, a detected high position and low level liquid level signal can be sent to control device 60.In addition, high-order and low level liquid level sensor 65H, 65L also can be electrode bar float switches in addition etc.Under the situation of float switch, an available switch detects high-order liquid level and low level liquid level both sides.And, serve as under the situation of control object, during middle temperature liquid level detector 65 is arranged in the warm regenerator G2 body at liquid level with middle temperature regenerator G2 body.
High-temp regenerator G3 is the device that the temperature among the warm regenerator G2 makes refrigerant evaporation, concentration is risen being higher than from absorber A importing weak solution Sw, by heat dilute solution Sw usefulness.The weak solution ingress pipe 53a that imports weak solution Sw is set in high-temp regenerator G3.And, the structure of high-temp regenerator G3 is to heat weak solution Sw by burning gases, steam or from the external heated source, described burning gases are by importing gas or wet goods and its burning being produced, and described steam is supplied with from Steam generating furnace (not having diagram).In the present embodiment, in high-temp regenerator G3, will make below the heating of flowing with steam r as the heating of the heating source of heat dilute solution Sw is arranged on steam pipe 53.Heating forms the state that submerges from the weak solution Sw that weak solution ingress pipe 53a imports with steam pipe 53, and high-temp regenerator G3 forms so-called full-liquid type.High temperature refrigerant steam pipe 54 is connected the top of high-temp regenerator G3, and this high temperature refrigerant steam pipe 54 is derived the high temperature condensed steam Vs3 that utilizes heating to evaporate from weak solution Sw with the heat of steam r.High temperature refrigerant steam pipe 54 is connected with steam pipe 52 with the heating of middle temperature regenerator G2.In high-temp regenerator G3, be provided with pressure sensor 63 as the pressure detector that detects high-temp regenerator G3 internal pressure.Pressure sensor 63 can detect high-temp regenerator G3 internal pressure and get final product, and therefore, also can be arranged near the high temperature refrigerant steam pipe 54 of high-temp regenerator G3.Pressure sensor 63 utilizes signal cable to be connected with control device 60, pressure sensor 63 detected pressure signals can be sent to control device 60.
And, the high-temp regenerator solution tank 23 that accumulates high temperature concentrated solution Sh3 is set in high-temp regenerator G3, high temperature concentrated solution Sh3 forms as follows, promptly, heat with steam r with the heating in the steam pipe 53 by the utilization heating of submerging in weak solution Sw of flowing through, refrigerant evaporates from weak solution Sw, concentration rises.Typical high temperature regenerator solution tank 23 is the bottom of high-temp regenerator G3 to be divided into by dividing plate 23a heating is set forms with the space of steam pipe 53, and described dividing plate 23a vertically extends towards the top from the bottom of high-temp regenerator G3.To the body that the space of this heating with steam pipe 53 is called high-temp regenerator G3 be set.Make the bottom of high-temp regenerator solution tank 23 be formed on the more below that the high-temp regenerator G3 bottom of heating the space of using steam pipe 53 is set.Formation makes and is provided with the structure that heats with in the solution inflow high-temp regenerator solution tank 23 of crossing dividing plate 23a among the concentrated solution Sh3 in the space (body) of steam pipe 53.Typical high temperature regenerator solution tank 23 is to become one with high-temp regenerator G3 and form, but for example also the container with specified volume can be separated physically with high-temp regenerator G3 and be connected by pipeline form, as the part of high-temp regenerator G3.And high-temp regenerator solution tank 23 also can not be container shapes but pipeline.The high temperature concentrated solution delivery line 46 of deriving high temperature concentrated solution Sh3 is connected on the high-temp regenerator solution tank 23.High temperature concentrated solution delivery line 46 collaborates, is connected with the concentrated solution spreader nozzle 72 of absorber A with low temperature concentrated solution delivery line 44 by high-temperature solution heat exchanger 33 backs.High temperature liquid level detector 66 is set on high-temp regenerator solution tank 23, and this high temperature liquid level detector 66 has high-order liquid level sensor 66H that detects the high-order liquid level that accumulates in its inner high temperature concentrated solution Sh3 and the low level liquid level sensor 66L that detects the low level liquid level.A typical high position and low level liquid level sensor 66H, 66L use electrode bar.Between high-order liquid level sensor 66H and low level liquid level sensor 66L and control device 60, lay signal cable respectively, detected liquid level signal can be sent to control device 60.In addition, high-order and low level liquid level sensor 66H, 66L also can be electrode bar float switches in addition etc.And, serve as that high temperature liquid level detector 66 is arranged in the high-temp regenerator G3 body under the situation of control object at liquid level with high-temp regenerator G3 body.
Condenser C is low temperature refrigerant steam Vs1 importing, condensation of will evaporate in low-temperature regenerator G1 and the device that forms cryogenic condensation refrigerant Vf1.Condenser C forms shell-tube type with low-temperature regenerator G1 in a tank body, between is provided with the next door.The top of condenser C next door is communicated with low-temperature regenerator G1, can import low temperature refrigerant steam Vs1 from low-temperature regenerator G1.The mobile cooling water pipe C1 of cooling water q that makes cooling low temperature refrigerant steam Vs1 and middle temperature condensation refrigerant Vf2 is set in the inside of condenser C.And the middle temperature condensation refrigerant pipe 57 that imports the middle temperature condensation refrigerant Vf2 of condensation in low-temperature regenerator G1 is connected on the condenser C.Cooling medium liquid Vf is connected on the condenser C towards the cryogenic condensation refrigerant pipe 58 that evaporimeter E derives, and described cooling medium liquid Vf has mixed low temperature refrigerant steam Vs1 condensation cryogenic condensation refrigerant Vf1 that forms and the middle temperature condensation refrigerant Vf2 that is cooled.
Evaporimeter E is the device that makes cooling medium liquid Vf evaporation from condenser C importing cooling medium liquid Vf, with the heat of the medium p that is cooled.Make the medium p flowing cold water pipe 74 that is cooled in the setting of the inside of evaporimeter E.The top of the cold water pipe 74 in evaporimeter E is provided for spraying the cooling medium liquid spreader nozzle 75 of cooling medium liquid Vf.The bottom of evaporimeter E is as the storage portion 76 that stores the cooling medium liquid Vf that imports.In storage portion 76, be connected with the cooling medium liquid Vf that will store circulation refrigerant pipe 59 to cooling medium liquid spreader nozzle 75 guiding on top.Circulation refrigerant pipe 59 is provided with circulating pump 14, and this circulating pump 14 will be stored in cooling medium liquid Vf in the storage portion 76 to cooling medium liquid spreader nozzle 75 pressurized delivered.Evaporimeter E forms shell-tube type with absorber A in a tank body, between is provided with the next door.The top of evaporimeter E next door is communicated with absorber A, and the refrigerant steam Vs that evaporates in evaporimeter E is moved to absorber A.
In warm solution pump 12 be with weak solution Sw from absorber A to the pump of warm regenerator G2 and low-temperature regenerator G1 liquor charging.In warm solution pump 12 be arranged on the weak solution delivery line 42.Weak solution delivery line 42 is connected with the weak solution spreader nozzle 52a of middle temperature regenerator G2.42 bifurcateds of the weak solution delivery line in the downstream of the therefrom warm solution pump 12 of weak solution pipe 41, weak solution pipe 41 is connected with the weak solution spreader nozzle 51a of low-temperature regenerator G1.In warm solution pump 12 have can with the regulation pressure with the weak solution Sw in the absorber A carries degree in middle temperature regenerator G2 lift, do not have lift to the high-temp regenerator G3 liquor charging higher than the pressure of middle temperature regenerator G2.In other words, middle temperature solution pump 12 is not to have too high lift, the pump of flow.In warm solution pump 12 can be to the low-temperature regenerator G1 liquor charging lower than the pressure of middle temperature regenerator G2.In warm solution pump 12 and control device 60 between lay signal cable, by receiving the Signal Regulation rotary speed from control device 60, the discharge rate that can regulate weak solution Sw.
Pyrosol pump 13 is from the pump of absorber A to high-temp regenerator G3 liquor charging with weak solution Sw.Pyrosol pump 13 is arranged on the weak solution delivery line 43.Weak solution delivery line 43 is connected with the weak solution ingress pipe 53a of high-temp regenerator G3.Pyrosol pump 13 has can be with pressure the lift that the weak solution Sw in the absorber A is carried in high-temp regenerator G3 of regulation.Though pyrosol pump 13 also has can be to than the low middle temperature regenerator G2 of high-temp regenerator G3 pressure and the lift of low-temperature regenerator G1 liquor charging, but if with pyrosol pump 13 to the middle temperature regenerator G2 of pressure differential and low-temperature regenerator G1 liquor charging equably being arranged with high-temp regenerator G3, then need be provided as the resistance of pressure loss at the inlet of middle temperature regenerator G2 and low-temperature regenerator G1, therefore, from suppressing the viewpoint of energy loss, in the present embodiment not to middle temperature regenerator G2 and low-temperature regenerator G1 liquor charging.Pyrosol pump 13 and control device 60 between lay signal cable, by receiving signal, regulating rotary speed, the discharge rate that can regulate weak solution Sw from control device 60.
Cryogenic fluid heat exchanger 31 is at low temperature concentrated solution Sh1 and the concentrated solution of middle temperature concentrated solution Sh2 mixing and the machine that carries out heat exchange between the weak solution Sw of low-temperature regenerator G1 and middle temperature regenerator G2 liquor charging.Typical cryogenic fluid heat exchanger 31 uses plate heat exchanger, but also can use shell-tube type or other heat exchangers.Cryogenic fluid heat exchanger 31 is arranged on the weak solution delivery line 42 and the low temperature concentrated solution delivery line 44 behind middle temperature concentrated solution delivery line 45 interflow before weak solution pipe 41 bifurcateds.
In warm solution heat exchanger 32 be at middle temperature concentrated solution Sh2 and the machine that between the weak solution Sw of middle temperature regenerator G2 liquor charging, carries out heat exchange.In warm solution heat exchanger 32 be arranged in warm regenerator solution tank 22 more the below.Warm solution heat exchanger 32 uses plate heat exchanger in typical, but also can use shell-tube type or other heat exchanger.In warm solution heat exchanger 32 be arranged on the weak solution delivery line 42 and middle temperature concentrated solution delivery line 45 behind weak solution pipe 41 bifurcateds.
High-temperature solution heat exchanger 33 is at high temperature concentrated solution Sh3 and the machine that carries out heat exchange between the weak solution Sw of high-temp regenerator G3 liquor charging.High-temperature solution heat exchanger 33 is arranged on the more below of high-temp regenerator solution tank 23.Typical high temperature solution heat exchanger 33 uses plate heat exchanger, also can use shell-tube type or other heat exchanger.High-temperature solution heat exchanger 33 is arranged on weak solution delivery line 43 and the high temperature concentrated solution delivery line 46.In addition, also high-temperature solution heat exchanger 33 can be divided into a plurality of arranged side by side or series connection settings.If dwindle the size of each after cutting apart, then promptly high-temperature solution heat exchanger 33 is formed under the situation of superatmospheric pressure, also can dwindle internal volume, improve security, can comprise the processing of processing on the rules of pressure vessel etc. more easily.
Followingly describe with regard to the circulation of absorption refrigerating machine 1 with reference to Fig. 1.The circulation of refrigerant side at first, is described.Condenser C is received in the low temperature refrigerant steam Vs1 that evaporates among the low-temperature regenerator G1, carries out cooling condensation, forms cooling medium liquid Vf1 by the cooling water q that flows through cooling water pipe C1 that supplies with from cooling tower (not having diagram).The cooling water q that flows through cooling water pipe C1 is carried to absorber A.On the other hand, condensed cooling medium liquid Vf1 mixes, forms cooling medium liquid Vf with the middle temperature condensation refrigerant Vf2 of the cooling water q cooling of being flow through cooling water pipe C1 and carried to evaporimeter E, is stored in storage portion 76 as cooling medium liquid Vf.Perhaps, the cooling medium liquid Vf that carries to evaporimeter E from condenser C also can with the cooling medium liquid Vf interflow by circulating pump 14 pressurized delivered, be stored in storage portion 76 after being sprayed onto cold water pipe 74 by cooling medium liquid spreader nozzle 75.The cooling medium liquid Vf that is stored in storage portion 76 is recycled pump 14 to cooling medium liquid spreader nozzle 75 liquor chargings.In a single day the cooling medium liquid Vf of evaporimeter E sprays to cold water pipe 74 from cooling medium liquid spreader nozzle 75, and then cooling medium liquid Vf evaporates from the medium p reception heat that are cooled in the cold water pipe 74, and on the other hand, the medium p that is cooled is cooled.The medium p that is cooled that is cooled is transported to and utilizes cold and hot place (not having diagram) to use.On the other hand, the cooling medium liquid Vf that evaporates in evaporimeter E becomes refrigerant steam Vs, moves to the absorber A that is communicated with.
The below circulation of explanation solution side.In absorber A, from concentrated solution spreader nozzle 72, spray the solution S of high concentration, solution S is absorbed in the refrigerant steam Vs that produces among the evaporimeter E, becomes weak solution Sw.Weak solution Sw is stored in the storage portion 73.The absorption heat that solution S produces when absorbing refrigerant steam Vs is removed by the cooling water q that flows through cooling water pipe 71.Cooling water q in the present embodiment will import cooling water pipe 71 at the water that condenser C uses, and absorb cooling water that heat back temperature rises to be delivered into promoting the circulation of qi to cooling tower (not shown) cold removing.Especially in the absorption refrigerating machine of triple function, because the pressure of high-temp regenerator raises, therefore as present embodiment, use cooling water q in condenser C after it is imported absorber A, the pressure that so not only can suppress the interior pressure rising of low-temperature regenerator G1, also can suppress in the high-temp regenerator G3 rises.But guide to condenser C again after also can in absorber A, using.In this case, can improve the performance of absorber A.And, also cooling water q can be imported condenser C and absorber A respectively.In this case, not only can suppress pressure in the high-temp regenerator G3 rises, but also can improve the performance of absorber A.
The weak solution Sw of storage portion 73 utilize respectively pyrosol pump 13 to high-temp regenerator G3 carry out pressurized delivered, utilize in warm solution pump 12 carry out pressurized delivered to middle temperature regenerator G2 and low-temperature regenerator G1.Like this,, therefore can stably supply with an amount of weak solution Sw, can suppress energy loss to each regenerator G1～G3 owing to be divided into pyrosol pump 13 and middle temperature solution pump 12 carries out pressurized delivered with weak solution Sw to each regenerator G1～G3.In addition, also can form following structure, that is, make the solution that accumulates in the storage portion 73 mix with the solution S of the high concentration that flows back to from each regenerator G1～G3, supply with to concentrated solution spreader nozzle 72 by solution circulation pump (not having diagram).And, also in the structure of warm solution pump 12 double as solution circulation pumps.In this case, the weak solution delivery line 42 between preferably therefrom warm solution pump 12 and the cryogenic fluid heat exchanger 31 is told pipeline, is connected with concentrated solution spreader nozzle 72.
The weak solution Sw that flows through weak solution delivery line 43 carries out heat exchange with concentrated solution Sh3, carries out recuperation of heat in high-temperature solution heat exchanger 33, rise the back from thin liquid delivery line 53a importing high-temp regenerator G3 in temperature.Utilize pyrosol pump 13 to carry out pressurized delivered, import to weak solution Sw among the high-temp regenerator G3 and increased the weak solution Sw of the heating of dividing plate 23a with steam pipe 53 sides, heat with steam r by utilizing from the heating of vapour source (not having diagram) supply, refrigerant evaporation forms concentrated solution Sh3.Operating pressure and the operating temperature of the high-temp regenerator G3 of this moment can change according to the freezing load of absorption refrigerating machine 1.With respect to the variation of freezing load, be typically by utilizing control valve (not having diagram) to regulate and importing to heat and carry out correspondence with the amount of steam r with the heating in the steam pipe 53.In case heating changes to the quantity delivered that heats with steam pipe 53 with steam r, interior the changing of Hair Fixer of high-temp regenerator G3 then, therefore, the temperature and pressure of the high-temp regenerator G3 that moves also changes.Refrigerant steam Vs3 after the evaporation is carried with steam pipe 52 by the heating to middle temperature regenerator G2.Temperature rises high temperature concentrated solution Sh3 with the heat of steam r by absorbing heating, after in crossing dividing plate 23a inflow high-temp regenerator solution tank 23, import in the high-temperature solution heat exchanger 33, carry out heat exchange, reclaim heat by pressure in the high-temp regenerator G3 and gravity, and then import absorber A with weak solution Sw.
On the other hand, flow through the weak solution Sw of weak solution delivery line 42, at first with in cryogenic fluid heat exchanger 31 in warm concentrated solution Sh2 and the mixed concentrated solution of low temperature concentrated solution Sh1 carry out heat exchange, carry out recuperation of heat, shunting then, warm solution heat exchanger 32 during a part is imported into, remaining is imported into low-temperature regenerator G1.The weak solution Sw of warm solution heat exchanger 32 and middle temperature concentrated solution Sh2 carry out heat exchange, carry out recuperation of heat in the importing, temperature rise the back import in warm regenerator G2, spray from weak solution spreader nozzle 52a.The high temperature refrigerant steam Vs3 heating that the weak solution Sw that sprays from weak solution spreader nozzle 52a is evaporated among high-temp regenerator G3, the refrigerant evaporation among the weak solution Sw in the middle temperature regenerator G2, become in warm concentrated solution Sh2.Middle temperature refrigerant steam Vs2 after the evaporation is transported to the heating steam pipe 51 of low-temperature regenerator G1.In warm concentrated solution Sh2 temperature rises by the heat that absorbs high temperature refrigerant steam Vs3, in inflow in the warm regenerator solution tank 22 after, carry out heat exchange, reclaim heat with weak solution Sw by warm solution heat exchanger 32 in the importing of the pressure in gravity and the middle temperature regenerator G2, collaborate with low temperature concentrated solution Sh1.And the reduction of the temperature of the high temperature refrigerant steam Vs3 of heat dilute solution Sw, condensation in middle temperature regenerator G2 are collaborated with middle temperature evaporation refrigerant Vs2 after becoming high temperature condensation refrigerant Vf3.Mix, become the refrigerant steam Vm of mixing with the high temperature condensation refrigerant Vf3 at middle temperature evaporation refrigerant Vs2 interflow.
Import the weak solution Sw of low-temperature regenerator G1 after temperature rises in cryogenic fluid heat exchanger 31, sprayed from weak solution spreader nozzle 51a.Be heated by the refrigerant steam Vm that mixes by the weak solution Sw that sprays from weak solution spreader nozzle 51a, the refrigerant evaporation among the weak solution Sw in the low-temperature regenerator G1, become low temperature concentrated solution Sh1.Low temperature refrigerant steam Vs1 after the evaporation is carried to condenser C.Temperature rises low temperature concentrated solution Sh1 by the heat that absorbs refrigerant steam Vm, after flowing into low-temperature regenerator solution tank 21, cross low temperature concentrated solution delivery line 44 by the pressure current in gravity and the low-temperature regenerator G1, the middle temperature concentrated solution Sh2 interflow of coming out with warm solution heat exchanger 32 therefrom, be imported in the cryogenic fluid heat exchanger 31 then, carry out heat exchange, reclaim heat with weak solution Sw, then, spraying in absorber A with the concentrated solution spreader nozzle 72 of back, high temperature concentrated solution Sh3 interflow from absorber A.
In the circulation of above-mentioned solution, each regenerator G1～G3 supplies with the refrigerant steam that solution does not have to mix to next operation, and, for prevent because of the not enough heat exchanger effectiveness that produce of the concentrated solution in the solution heat exchanger 31～33 reduce and the heat-transfer area of each regenerator G1～G3 overheated, the liquid level that preferably makes the concentrated solution in each regenerator G1～G3 is for necessarily.Here said " necessarily " also can have the amplitude of regulation in view of above-mentioned purpose.As mentioned above, each regenerator G1～G3 is along with the variation of the heating usefulness steam import volume of the variation of corresponding freezing load, and pressure also changes in it.In case the interior pressure of each regenerator G1～G3 changes, then the head of each solution pump 12,13 (ヘ Star De) also changes, if keep the rotary speed of the solution pump 12,13 before the interior pressure of each regenerator G1～G3 changes, then may take place and the liquid level of the concentrated solution in each regenerator G1～G3 can not be remained certain situation.Therefore, for the liquid level that makes the concentrated solution in each regenerator G1～G3 is certain, absorption refrigerating machine 1 carries out following control by control device 60.
For the liquid level that makes the high temperature concentrated solution Sh3 in the high-temp regenerator G3 is certain, pyrosol pump 13 is according to regulating discharge rates by pressure sensor 63 detected pressure.The adjusting of typical discharge rate is undertaken by the rotary speed of regulating pyrosol pump 13.Regulating discharge rate by regulating rotary speed, compare with the situation of utilizing valve etc. to carry out throttling and can cut down consumer motivation, is desirable therefore.Typically undertaken by following action according to the method for pressure sensor 63 detected pressure adjusting discharge rates, promptly, detect the pressure in the high-temp regenerator G3, according to the relation of the needed pump rotary speed of obtaining in advance of the maintenance first regulation liquid level and high-temp regenerator G3 internal pressure, with the pump rotary speed of the pressure in the corresponding detected high-temp regenerator G3 pyrosol pump 13 that turns round.As the high-temp regenerator solution tank 23 of the liquid level of high-temp regenerator G3 or the intrinsic liquid level of high-temp regenerator G3, interaction relationship is arranged with pressure in the high-temp regenerator G3.That is, along with using the flow of steam r to increase to heating with the heating of steam pipe 53 supplies, if the rising of the pressure in the high-temp regenerator G3, the then derived quantity of high temperature concentrated solution Sh3 increase, liquid level reduce.And if pyrosol pump 13 is centrifugal pumps, in case then the interior pressure of high-temp regenerator G3 rises, the discharge rate of weak solution Sw will reduce, liquid level will reduce.In any case, can be by the discharge rate (increase discharge rate, or restore after increasing the discharge rate that reduces) of regulating pyrosol pump 13 with the value of level control in regulation.
Suppose that the pressure balance in the absorption refrigerating machine 1 changes, according to the rotary speed of the needed pyrosol pump of obtaining in advance 13 of the maintenance first regulation liquid level and the relation of high-temp regenerator G3 internal pressure, even the pump rotary speed running pyrosol pump 13 with the pressure in the detected high-temp regenerator G3 of correspondence can not keep the first regulation liquid level, then in this case, carry out the discharge rate of level detection, correction pyrosol pump 13 by liquid level sensor 66H, 66L.If liquid level reduces, low level liquid level sensor 66L detects less than liquid level, then control device 60 sends signal, makes rotary speed only increase setting to pyrosol pump 13.If opposite liquid level rises, high-order liquid level sensor 66H detects high-order liquid level, then control device 60 sends signal, makes rotary speed only reduce setting to pyrosol pump 13.In addition, do not detect under the situation of low level liquid level the needed pump rotary speed of the maintenance first regulation liquid level that control device 60 corrections are obtained in advance and the relation of high-temp regenerator G3 internal pressure detecting high-order liquid level.This correction is partly revised the rotary speed that is equivalent to setting, and described setting increases and decreases according to the action of a high position or low level liquid level sensor 66H, 66L.By revising, reduce the action frequency of liquid level sensor 66H, 66L.Like this, the liquid level of high temperature concentrated solution Sh3 in the high-temp regenerator G3 is remained on the first regulation liquid level, prevents that solution from sneaking into high temperature refrigerant steam Vs3, or steam sneak into high-temperature solution heat exchanger 33 so-called refrigerant steam scurry cylinder (blow I and pull out け).
Remain under certain situation at liquid level, also carry out remaining the identical control of certain control with liquid level with the high temperature concentrated solution Sh3 of high-temp regenerator G3 with the middle temperature concentrated solution Sh2 in the middle temperature regenerator G2.But, remain under certain situation at liquid level the middle temperature concentrated solution Sh2 in the middle temperature regenerator G2, discharge rate according to warm solution pump 12 in the pressure sensor 62 detected pressure adjustings, in the time can not keeping the second regulation liquid level, carry out level detection by liquid level sensor 65H, 65L, this level detection is used for revising the discharge rate of warm solution pump 12.In addition, though middle temperature solution pump 12 is carried weak solution Sw side by side to middle temperature regenerator G2 and low-temperature regenerator G1, but by little pressure loss (for example throttle orifice or control valve etc.) is set on weak solution pipe 41, with the liquid surface height controlling of the middle temperature concentrated solution Sh2 in the middle temperature regenerator G2 is certain, also the liquid level of the low temperature concentrated solution Sh1 in the low-temperature regenerator G1 can be remained in the prescribed limit.
In addition, liquid surface height controlling also can be carried out by the following method, promptly, do not detect the pressure in each regenerator G2, G3, and detect a high position and low level liquid level in each regenerator solution tank 22,23 respectively with liquid level sensor 65H, 65L, 66H, 66L, and the rotary speed of regulating each solution pump 12,13 is to form the liquid level of regulation.And, also can not detect the bound of liquid level, but be provided with displacement-type liquid level detector etc. liquid level detector (not having diagram), carry out continuous control by adjuster.In this case, if P control or PI control, then control is stable, very desirable.And, though also can not use liquid level sensor 65H, 65L, 66H, 66L only with pressure detector 62,63 control liquid levels, but can not detect the deviation of the relation of the rotary speed that is used to keep the needed solution pump of regulation liquid level obtained in advance and high-temp regenerator G3 internal pressure sometimes, therefore, preferably use liquid level sensor 65H, 65L, 66H, 66L.
(change of regenerator internal pressure testing agency)
When carrying out the control of liquid level, also not working pressure sensor 62,63 and serviceability temperature sensor.
Fig. 2 is the system diagram of absorption refrigerating machine 2 (following is called " absorption refrigerating machine 2 ") of triple function of the variation of expression absorption refrigerating machine 1.In absorption refrigerating machine 2, the heating of warm regenerator G2 detected the temperature of the condensed high temperature condensation of high temperature refrigerant steam Vs3 refrigerant Vf3 with near the high temperature condensation refrigerant pipe 56 the outlet of steam pipe 52 during replacement pressure sensor 63 will be arranged on as the temperature sensor 69 of high temperature refrigerant Temperature Detector.And, replace pressure sensor 62 will as in the temperature sensor 68 of warm refrigerant temperature detector be arranged on the warm condensation refrigerant pipe 57, in the detection warm refrigerant steam Vs2 condensed in the temperature of warm condensation refrigerant Vf2.The temperature of each condensation refrigerant Vf3, Vf2 is owing to be roughly saturated temperature, therefore, with saturation temperature be converted into pressure, according to the relation of the rotary speed of the needed solution pump of maintenance regulation liquid level obtained in advance and each regenerator G2, G3 internal pressure, the rotary speed by regulator solution pump 12,13 can keep the liquid level stipulated.In addition, though detected temperatures saturation temperature preferably need not be a saturation temperature.Even supercooled refrigerant temperature, so long as heating does not hinder practical application with near the temperature the outlet of steam pipe 51,52 yet.Other formations of absorption refrigerating machine 2 are identical with absorption refrigerating machine 1.
(multipolarity of absorber and evaporimeter)
In the above description, be that absorber and evaporimeter are the absorption refrigerating machine of the triple function of single-stage, but also can be that absorber and evaporimeter are the absorption refrigerating machines of multistage triple function.
Fig. 3 is the part system diagram that expression forms absorber and evaporimeter the absorption refrigerating machine 3 (following is called " absorption refrigerating machine 3 ") of multistage triple function.In absorption refrigerating machine 3, absorber A (with reference to Fig. 1,2) is divided into rudimentary absorber A1 and senior absorber A2 two-stage, evaporimeter E (with reference to Fig. 1,2) is divided into rudimentary evaporimeter E1 and senior evaporimeter E2 two-stage, rudimentary absorber A1 and rudimentary evaporimeter E1, senior absorber A2 and senior evaporimeter E2 are formed a pair of being arranged on independently in the shell respectively.And, concentrated solution is directed to senior absorber A2 after being directed into rudimentary absorber A1, the medium p that is cooled is directed into senior evaporimeter E2 earlier, is directed to rudimentary evaporimeter E1 then, and the cooling water q that comes out from condenser C is directed to rudimentary absorber A1 and senior absorber A2 side by side.Other formation is identical with absorption refrigerating machine 1,2.Like this, if form absorber A and evaporimeter E and be the absorption refrigerating machine of multistage triple function, then can reduce the concentration of weak solution Sw, can reduce the boiling temperature of low-temperature regenerator G1, middle temperature regenerator G2, and can reduce the temperature and pressure of high-temp regenerator G3.
(variation of high-temp regenerator)
In addition, high-temp regenerator G3 can not be the structure shown in Fig. 1,2, but direct current cooker.
Fig. 4 is the figure as the high-temp regenerator G3 ' of direct current cooker.(a) be that longitudinal section, (b) are the vertical views of tank body part.High-temp regenerator G3 ' has the collector 81,82 of ring-type in tank body 80 cylindraceous, in the upper and lower, between these collectors 81,82, arrange annularly a plurality of heat-transfer pipes 83 are set, have burner 84 in center upper portion portion, and have the gas-liquid separator 85 that connects by pipeline 86 in upper header 81 as burner.And, on lower header 82, be connected with weak solution delivery line 43, be connected with high temperature refrigerant steam pipe 54 on the top of gas-liquid separator 85, the bottom of gas-liquid separator 85 is connected with lower header 82 by pipeline 87.And in the bottom of gas-liquid separator 85, high temperature concentrated solution delivery line 46 is arranged side by side with pipeline 87.Gas-liquid separator 85 also plays the effect of the high-temp regenerator solution tank 23 (with reference to Fig. 1,2) among the high-temp regenerator G3.The pressure detector of the pressure in pressure sensor 63, the conduct detection high-temp regenerator G3 ' is set on gas-liquid separator 85.And, the liquid level test section 99C that is communicated with gas phase portion and liquid phase portion respectively is set in the side of gas-liquid separator 85, liquid level test section 99C is provided with high temperature liquid level detector 66C, and this high temperature liquid level detector 66C has high-order liquid level sensor 66CH that detects the high-order liquid level that accumulates in its inner high temperature concentrated solution Sh3 and the low level liquid level sensor 66CL that detects the low level liquid level.High temperature liquid level detector 66C is equivalent to the high temperature liquid level detector 66 (with reference to Fig. 1,2) among the high-temp regenerator G3.High temperature liquid level detector 66C is connected with control device 60 by signal cable.
In addition, as the liquid level detector in the high-temp regenerator G3 ', also high temperature liquid level detector 66D can be set in gas-liquid separator 85, this high temperature liquid level detector 66D has high-order liquid level sensor 66DH that detects the high-order liquid level that accumulates in its inner high temperature concentrated solution Sh3 and the low level liquid level sensor 66DL that detects the low level liquid level.Perhaps also can between upper header 81 and lower header 82, be set communicating pipe 90, liquid level test section 99A was set in communicating pipe 90, high temperature liquid level detector 66A is set in liquid level test section 99A, this high temperature liquid level detector 66A has the high-order liquid level sensor 66AH of the high-order liquid level that detects high temperature concentrated solution Sh3 and detects the low level liquid level sensor 66AL of low level liquid level, perhaps, from upper header 81 high temperature liquid level detector 66B is set in specific heat-transfer pipe 83, this high temperature liquid level detector 66B has the high-order liquid level sensor 66BH of the high-order liquid level that detects high temperature concentrated solution Sh3, with the low level liquid level sensor 66BL that detects the low level liquid level.Under the situation that high temperature liquid level detector 66A, 66B, 66D are set, all be connected with control device 60 by signal cable respectively.High-temp regenerator G3 ' has any one structure among high temperature liquid level detector 66A～66D, or has it and make up arbitrarily or whole structures.Be typically, high temperature liquid level detector 66B is suitable for being used to preventing the level detection that heat-transfer pipe 83 is overheated, high temperature liquid level detector 66C, 66D are suitable for preventing that high temperature concentrated solution Sh3 from sneaking into refrigerant steam Vs3 or high temperature concentrated solution Sh3 carry out level detection from stable supplying to absorber A (with reference to Fig. 1,2), owing to have such strong point, preferably high temperature liquid level detector 66A～66D is set according to the control purpose.
And high-temp regenerator G3 ' preferably has various safety protection functions, is used to prevent be damaged because of overheated etc. owing to the fault of control appliance or the damage of solution line system, the fault of solution pump 13 (with reference to Fig. 1,2) etc. cause high-temp regenerator G3 '.
For example, liquid level in the running of absorption refrigerating machine, in high-temp regenerator G3 ' is lower than the thermal deformation that will produce heat-transfer pipe 83 or collector 81,82 under the situation of lower safety limit liquid level of prior setting or overheated, in order to prevent thermal deformation or the overheated damage that produces owing to this heat-transfer pipe 83 or collector 81,82, the low liquid level detector that the liquid level that preferably will detect solution is lower than the lower safety limit liquid level is arranged in the liquid level test section 99A in (low liquid level detector 91A) or the heat-transfer pipe 83 (low liquid level detector 91B).Low liquid level detector 91A, 91B perhaps are not set in addition, but with low level liquid level sensor 66AL, 66BL, 66CL, the 66DL of high temperature liquid level detector 66A, 66B, 66C, 66D be set under the situation that does not contact the liquid level stipulated time, the liquid level that detects solution is lower than the lower safety limit liquid level.
Under the jar internal pressure of high-temp regenerator G3 ' rises to situation above upper safety limit pressure,, for example also safety valve discharge pipe 88 can be connected with gas-liquid separator 85, at this safety valve 89 be set in order to reduce a jar internal pressure.When safety valve 89 moves, in a single day in the high-temp regenerator G3 ' that bleed such as air outside, then will destroy the vacuum state of absorption refrigerating machine, therefore, preferably constitute the refrigerant that safety valve 89 moved and discharge or steam Vs3 be directed in warm regenerator G2 (with reference to Fig. 1,2) or low-temperature regenerator G1 (with reference to Fig. 1,2), perhaps condenser C (with reference to Fig. 1,2) or the pipeline that is connected with these.And, in order to detect the action of the safety valve 89 that is not electrically connected, the safety valve Temperature Detector 93 of the safety valve pressure detector 92 that detects safety valve discharge pipe 88 internal pressures or detected temperatures can be set on safety valve discharge pipe 88 or detect the safety valve vibrating detector 94 of the vibration of safety valve discharge pipe 88 with control device 60.In safety valve pressure detector 92, safety valve Temperature Detector 93 and the safety valve vibrating detector 94 any one can be set or make up setting, be connected with control device 60 by signal cable.
And, for the thermal deformation that prevents from when the tank body temperature of high-temp regenerator G3 ' is in superheat state, to produce or because of the overheated damage that produces, the surface temperature detector that detects the tank surface temperature can be arranged on upper header 81 surfaces (surface temperature detector 95A) or heat-transfer pipe 83 surfaces (the surface temperature detector 95B) or lower header 82 surfaces (surface temperature detector 95C).Perhaps, in order to detect superheat state, Temperature Detector 96A in the jar of the temperature that detects the high temperature concentrated solution Sh3 in the upper header 81 also can be set or detect Temperature Detector 96B in the jar of temperature of the weak solution Sw in the lower header 82.Surface temperature detector 95A～95C, jar interior Temperature Detector 96A, a 96B are connected with control device 60 by signal cable.
And,,, EGT detector 98 can be set on flue gas leading 97 for burn-out producing grey cigarette owing to fault of burner etc., causing the temperature of waste gas e to rise under the situation above upper safety limit.EGT detector 98 is connected with control device 60 by signal cable.
In high-temp regenerator G3 ', weak solution Sw is imported lower header 82, utilizes the pressure of pyrosol pump 13 (with reference to Fig. 1,2) to pass a plurality of heat-transfer pipes 83 arrival upper header 81.At this moment, air supply and combustion gas or oil burn in burner 84, are the weak solution Sw that heat-transfer pipe 83 is passed in heating source, heating with the hotwork of this burning, and refrigerant is evaporated from weak solution Sw.That is, in high-temp regenerator G3 ', replace heating and import combustion gas or oil with steam r (with reference to Fig. 1,2).Produce refrigerant steam from the weak solution Sw of heating heat-transfer pipe 83, be typically liquid level and remain in the heat-transfer pipe 83, concentrated solution Sh3 and refrigerant steam Vs3 flow into gas-liquid separator 85 with the state of biphase gas and liquid flow (multi-phase flow) by pipeline 86.In gas-liquid separator 85, refrigerant steam Vs3 derives from top, and the part of high temperature concentrated solution Sh3 is returned lower header 82 from the bottom, and remaining is derived towards absorber A (with reference to Fig. 1,2) from high temperature concentrated solution delivery line 46.In high-temp regenerator G3 ', refrigerant steam Vs3 produces in heat-transfer pipe 83, the flow of high temperature concentrated solution Sh3 that flows into gas-liquid separators 85 by upper header 81 is greater than the flow of the weak solution Sw that utilizes pyrosol pump 13 to supply with from absorber A, therefore, make a part of high temperature concentrated solution Sh3 in the gas-liquid separator 85 return lower header 82.Like this, in the absorption refrigerating machine of triple function, because high-temp regenerator G3 is higher than atmospheric pressure, so high-temp regenerator preferably uses once-through boiler.
In addition, have at high-temp regenerator G3 ' under the situation of various safety protection functions, can play a role as described below.Has low liquid level detector 91A, 91B or high temperature liquid level detector 66A, 66B, 66C, under the situation of 66D, at detector 91A, liquid level on the 91B reduces, detection is during less than liquid level, or at detector 66A, 66B, 66C, the low level liquid level sensor 66AL of 66D, 66BL, 66CL, 66DL does not contact liquid level during the stipulated time, send signal to control device 60, the control device 60 of receiving signal sends signal to alarm device (not having diagram), give the alarm, simultaneously, turn off the fuel (not having diagram) etc. stops to supply with fuel to burner 84, promptly stops at the burning in the burner 84.
And under the situation with safety valve 89, in case the jar internal pressure of high-temp regenerator G3 ' rises to above upper safety limit pressure, then safety valve 89 moves.Because safety valve 89 carries out mechanical action, therefore utilize safety valve pressure detector 92, safety valve Temperature Detector 93 and safety valve vibrating detector 94 to detect safety valve 89 and whether move.Each detector 92,93,94 sends instant messages to control device 60.Under situation with safety valve pressure detector 92, when detected pressure reaches the upper safety limit value of prior setting, in addition, under situation with safety valve Temperature Detector 93, when detected temperature reaches the upper safety limit value of prior setting, judge that safety valve 89 has moved, control device 60 sends signal, gives the alarm to alarm device (not having diagram), simultaneously, turn off the fuel (not having diagram) etc. stops to supply with fuel to burner 84, promptly stops at the burning in the burner 84.And, under situation with safety valve vibrating detector 94, when detected vibration values reaches the value of prior setting, the action, the refrigerant steam Vs3 that are judged as by safety valve 89 spray, produced strong vibration on safety valve discharge pipes 88, control device 60 sends signal, gives the alarm to alarm device (not having diagram), simultaneously, turn off the fuel (not having diagram) etc. stops to supply with fuel to burner 84, promptly stops at the burning in the burner 84.
And, have surface temperature detector 96A, 95B or jar under the situation of Temperature Detector 96A, 96B, each detector 95A, 95B, 96A, 96B send real-time signal to control device 60, receive that in a single day the control device 60 of signal is judged as the temperature of the upper safety limit temperature that is higher than prior setting, then send signal, give the alarm to alarm device (not having diagram), simultaneously, turn off the fuel (not having diagram) etc. stops to supply with fuel to burner 84, promptly stops at the burning in the burner 84.
And, under situation with EGT detector 98, EGT detector 98 sends real-time signal to control device 60, if be higher than the temperature of the upper safety limit temperature of prior setting, 60 of control device then receiving signal are judged as abnormal combustion, send signal, give the alarm, simultaneously to alarm device (not having diagram), turn off the fuel (not having diagram) etc. stops to supply with fuel to burner 84, promptly stops at the burning in the burner 84.
(appending recuperation of heat mechanism)
In the absorption refrigerating machine of each above-mentioned triple function, except the recuperation of heat that forms by the heat exchange between the solution in each solution heat exchanger 31～33, also can carry out by the heat exchange of draining (the De レ Application) Vf2 of draining (the De レ Application) Vf3 of middle temperature regenerator G2 or low-temperature regenerator G1 and weak solution Sw and the recuperation of heat that forms and by from the heat exchange of the waste gas of high-temp regenerator G3 ' and weak solution Sw and the recuperation of heat that forms.And, also can between the combustion air of supplying with to high-temp regenerator G3 ', carry out from the recuperation of heat of the waste gas of high-temp regenerator G3 '.The unique portion that below just appends the device of recuperation of heat mechanism describes.
Fig. 5 uses the part system diagram that carries out the solution system of recuperation of heat to the weak solution of middle temperature regenerator and low-temperature regenerator conveying from the condensation refrigerant, is to connect respectively cryogenic fluid heat exchanger 31 and middle temperature condensation refrigerant solution heat exchanger 37 are set (a), and the part system diagram of middle temperature solution heat exchanger 32 and high temperature condensation refrigerant solution heat exchanger 36, (b) be to be set up in parallel cryogenic fluid heat exchanger 31 and middle temperature condensation refrigerant solution heat exchanger 37 respectively, and the part system diagram of middle temperature solution heat exchanger 32 and high temperature condensation refrigerant solution heat exchanger 36, (c) be middle temperature condensation refrigerant solution heat exchanger 37 and the high temperature condensation refrigerant solution heat exchanger 36 that is provided with respect to series connection, be set up in parallel the part system diagram of cryogenic fluid heat exchanger 31 and middle temperature solution heat exchanger 32.In addition, in Fig. 5, represented in absorption refrigerating machine 1,2 (with reference to Fig. 1,2),, omitted the diagram of other structures from the absorber A of solution system pipeline to each regenerator G1～G3 delivered solution.As shown in Figure 5, carrying out from the condensation refrigerant under the situation of recuperation of heat, have with high temperature condensation refrigerant Vf3 and weak solution Sw carry out heat exchange high temperature condensation refrigerant solution heat exchanger 36 and with in warm condensation refrigerant Vf2 and the weak solution Sw middle temperature condensation refrigerant solution heat exchanger 37 that carries out heat exchange.Typical high temperature condensation refrigerant solution heat exchanger 36 and middle temperature condensation refrigerant solution heat exchanger 37 use heat-exchangers of the plate type, but also can use shell-tube type or other heat exchangers.
Shown in Fig. 5 (a), be provided with under the situation of cryogenic fluid heat exchanger 31 and middle temperature condensation refrigerant solution heat exchanger 37 and middle temperature solution heat exchanger 32 and high temperature condensation refrigerant solution heat exchanger 36 in series connection respectively, pass weak solution Sw that cryogenic fluid heat exchanger 31 is diverted to weak solution pipe 41, in middle temperature condensation refrigerant solution heat exchanger 37, carry out heat exchange with the middle temperature condensation refrigerant Vf2 of condensation in low-temperature regenerator G1 and carry out recuperation of heat.On the other hand, the weak solution Sw of warm solution heat exchanger 32 carries out heat exchange with the high temperature condensation refrigerant Vf3 of condensation in middle temperature regenerator G2 and carries out recuperation of heat in high temperature condensation refrigerant solution heat exchanger 36 in passing cryogenic fluid heat exchanger 31 backs, passing.In this case, can improve the temperature of the weak solution Sw of warm regenerator G2 and low-temperature regenerator G1 in the importing.
Shown in Fig. 5 (b), under the situation that is set up in parallel cryogenic fluid heat exchanger 31 and middle temperature condensation refrigerant solution heat exchanger 37 and middle temperature solution heat exchanger 32 and high temperature condensation refrigerant solution heat exchanger 36 respectively, weak solution Sw imports cryogenic fluid heat exchanger 31 and middle temperature condensation refrigerant solution heat exchanger 37 respectively after the discharge side shunting of middle temperature solution pump 12.The weak solution Sw of warm condensation refrigerant solution heat exchanger 37 imports low-temperature regenerator G1 in the importing after carrying out heat exchange with middle temperature condensation refrigerant Vf2.On the other hand, weak solution Sw and the low temperature concentrated solution Sh1 (with reference to Fig. 1,2) that imports cryogenic fluid heat exchanger 31 carries out heat exchange.The part of the weak solution Sw that carries out heat exchange, derives from cryogenic fluid heat exchanger 31 imports low-temperature regenerator G1, warm solution heat exchanger 32 and high temperature condensation refrigerant solution heat exchanger 36 during remaining is further shunted, imports respectively.The weak solution Sw of warm solution heat exchanger 32 and middle temperature concentrated solution Sh2 (with reference to Fig. 1,2) carry out heat exchange in the importing, warm regenerator G2 during the weak solution Sw of importing high temperature condensation refrigerant solution heat exchanger 36 and high temperature condensation refrigerant Vf3 carry out collaborating, importing after the heat exchange.In this case, the solution split ratio of solution split ratio, high temperature condensation refrigerant solution heat exchanger 36 and the middle temperature solution heat exchanger 32 of warm condensation refrigerant solution heat exchanger 37 and cryogenic fluid heat exchanger 31 in can adjusting can simultaneously be adjusted the heat exchange amount of each heat exchanger, the temperature that one side improves the weak solution Sw of warm regenerator G2, low-temperature regenerator G1 in the importing.
Shown in Fig. 5 (c), at the middle temperature condensation refrigerant solution heat exchanger 37 and the high temperature condensation refrigerant solution heat exchanger 36 that are provided with respect to series connection, be set up in parallel under the situation of cryogenic fluid heat exchanger 31 and middle temperature solution heat exchanger 32, weak solution Sw imports cryogenic fluid heat exchanger 31 and middle temperature condensation refrigerant solution heat exchanger 37 respectively after the discharge side shunting of middle temperature solution pump 12.The weak solution Sw and the low temperature concentrated solution Sh1 (with reference to Fig. 1,2) that import cryogenic fluid heat exchanger 31 carry out shunting after the heat exchange, a part imports low-temperature regenerator G1, and warm solution heat exchanger 32 carried out heat exchange with middle temperature concentrated solution Sh2 (with reference to Fig. 1,2) during remaining imported.On the other hand, after the weak solution Sw of warm condensation refrigerant solution heat exchanger 37 and middle temperature condensation refrigerant Vf2 carry out heat exchange in the importing, import high temperature condensation refrigerant solution heat exchanger 36 and carry out heat exchange with high temperature condensation refrigerant Vf3.Warm regenerator G2 the weak solution Sw that therefrom warm solution heat exchanger 32 is derived collaborates, imports with the weak solution Sw that derives from high temperature condensation refrigerant solution heat exchanger 36.In this case, the solution split ratio of warm condensation refrigerant solution heat exchanger 37 in the importing, high temperature condensation refrigerant solution heat exchanger 36 and cryogenic fluid heat exchanger 31, middle temperature solution heat exchanger 32 can be adjusted, the heat exchange amount of each heat exchanger, the temperature that one side improves the weak solution Sw of warm regenerator G2 in the importing can be simultaneously adjusted.
Fig. 6 is that expression uses the weak solution of carrying to high-temp regenerator to carry out the part system diagram of the solution system of recuperation of heat from the condensation refrigerant, (a) is the part system diagram of warm condensation refrigerant solution heat exchanger 37 and high temperature condensation refrigerant solution heat exchanger 36 during series connection is provided with, (b) be to the middle temperature condensation refrigerant solution heat exchanger 37 of the setting of connecting and the part system diagram that high temperature condensation refrigerant solution heat exchanger 36 imports the structure of a part of weak solution Sw respectively, (c) the part system diagram that to be middle temperature condensation refrigerant solution heat exchanger 37 that series connection is provided with and high temperature condensation refrigerant solution heat exchanger 36 be set up in parallel with respect to the high-temperature solution heat exchanger 33A of absorber side.Under the situation of structure shown in Figure 6, carry out recuperation of heat in order to use the weak solution of carrying from the condensation refrigerant to high-temp regenerator, consider the temperature of condensation refrigerant Vf3, Vf2, high-temperature solution heat exchanger 33 is divided into high-temperature solution heat exchanger 33A and high-temperature solution heat exchanger 33B.And, in Fig. 6, represented in absorption refrigerating machine 1,2 (with reference to Fig. 1,2), to the road of each regenerator G1～G3 delivered solution pipe, omitted the diagram of other structures from the absorber A of solution system.And, carrying out under the situation of recuperation of heat from condensation refrigerant shown in Figure 6, also have and identical high temperature condensation refrigerant solution heat exchanger 36 shown in Figure 5 and middle temperature condensation refrigerant solution heat exchanger 37.
Shown in Fig. 6 (a), in series connection is provided with under the situation of warm condensation refrigerant solution heat exchanger 37 and high temperature condensation refrigerant solution heat exchanger 36, the weak solution Sw that derives from absorber A at first carries out heat exchange with high temperature concentrated solution Sh3 in high-temperature solution heat exchanger 33A, then, warm condensation refrigerant solution heat exchanger 37 in the importing carries out heat exchange with middle temperature condensation refrigerant Vf2 here and carries out recuperation of heat.And, weak solution Sw is imported into high temperature condensation refrigerant solution heat exchanger 36, carries out heat exchange and carry out recuperation of heat with high temperature condensation refrigerant Vf3, import high-temperature solution heat exchanger 33B then, carry out heat exchange, then import high-temp regenerator G3 with the high temperature concentrated solution Sh3 that derives from elevated temperature heat regenerator G3.In this case, can reclaim more heat with the weak solution Sw that imports high-temp regenerator G3.
Shown in Fig. 6 (b), under the situation of the structure that middle temperature condensation refrigerant solution heat exchanger 37 and high temperature condensation refrigerant solution heat exchanger 36 to the series connection setting import a part of weak solution Sw respectively, the weak solution Sw that derives from absorber A at first carries out heat exchange with high temperature concentrated solution Sh3 in high-temperature solution heat exchanger 33A, then, a part flows through weak solution pipe 43A, warm condensation refrigerant solution heat exchanger 37 in the importing, carry out heat exchange with middle temperature condensation refrigerant Vf2, warm condensation refrigerant solution heat exchanger 37 during remaining is walked around, with the weak solution Sw interflow of having carried out heat exchange with middle temperature condensation refrigerant Vf2.The part of this weak solution Sw flows through weak solution pipe 43B and imports high temperature condensation refrigerant solution heat exchanger 36, carries out heat exchange with high temperature condensation refrigerant Vf3, remaining is walked around high temperature condensation refrigerant solution heat exchanger 36, collaborates with the weak solution Sw that has carried out heat exchange with high temperature condensation refrigerant Vf3, import high-temperature solution heat exchanger 33B then, carry out heat exchange, then import high-temp regenerator G3 with the high temperature concentrated solution Sh3 that derives from elevated temperature heat regenerator G3.In this case, heat-shift, the one side that can simultaneously control in high temperature condensation refrigerant solution heat exchanger 36 and the middle temperature condensation refrigerant solution heat exchanger 37 carried out recuperation of heat.
Shown in Fig. 6 (c), under the situation that the middle temperature condensation refrigerant solution heat exchanger 37 that is provided with and the high temperature condensation refrigerant solution heat exchanger 36 high-temperature solution heat exchanger 33A with respect to the absorber side that will connect is set up in parallel, weak solution Sw in the discharge side shunting back of pyrosol pump 13, respectively import by weak solution delivery line 43 high-temperature solution heat exchanger 33A and import by weak solution pipe 43C in warm condensation refrigerant solution heat exchanger 37.The weak solution Sw and the low temperature concentrated solution Sh3 (with reference to Fig. 1,2) that import high-temperature solution heat exchanger 33A carry out heat exchange, the weak solution Sw of warm condensation refrigerant solution heat exchanger 37 and middle temperature condensation refrigerant Vf2 carry out heat exchange in the importing, import high temperature condensation refrigerant solution heat exchanger 36 then, carry out heat exchange, then each weak solution Sw interflow of shunting with high temperature condensation refrigerant Vf3.Weak solution Sw behind the interflow imports high-temperature solution heat exchanger 33B, carries out importing high-temp regenerator G3 after the heat exchange with the high temperature concentrated solution Sh3 that derives from high-temperature heat exchanger G3.In this case, by adjusting solution split ratio, can simultaneously adjust the heat-shift of each heat exchanger, the temperature that one side improves the weak solution Sw that imports high-temp regenerator G3 to high-temperature solution heat exchanger 33A and middle temperature condensation refrigerant solution heat exchanger 37, high temperature condensation refrigerant solution heat exchanger 36.
Fig. 7 is the solution system of recuperation of heat is carried out in expression to weak solution from the waste gas of being discharged by high-temp regenerator a part system diagram.(a) being to connect respectively the part system diagram of cryogenic fluid heat exchanger 31 and off-gas liquid solution heat exchanger 35A and middle temperature solution heat exchanger 32 and off-gas liquid solution heat exchanger 35B, high-temperature solution heat exchanger 33 and off-gas liquid solution heat exchanger 35C is set, (b) is the part system diagram that is set up in parallel cryogenic fluid heat exchanger 31 and off-gas liquid solution heat exchanger 35A and middle temperature solution heat exchanger 32 and off-gas liquid solution heat exchanger 35B, high-temperature solution heat exchanger 33 and off-gas liquid solution heat exchanger 35C respectively.In addition, in Fig. 7, also represented absorber A from solution system, and omitted the diagram of other structures to the solution conveyor tube road of each regenerator G1～G3.As shown in Figure 7, from the waste gas of discharging, carrying out under the situation of recuperation of heat, have three off-gas liquid solution heat exchanger 35A, 35B, 35C by high-temp regenerator.Typical off-gas liquid solution heat exchanger 35A, 35B, 35C use shell and tube heat exchanger, but also can use other heat exchangers.
Shown in Fig. 7 (a), be provided with under the situation of cryogenic fluid heat exchanger 31 and off-gas liquid solution heat exchanger 35A and middle temperature solution heat exchanger 32 and off-gas liquid solution heat exchanger 35B, high-temperature solution heat exchanger 33 and off-gas liquid solution heat exchanger 35C in series connection respectively, the waste gas e that discharges from high-temp regenerator G3 at first carries out heat exchange with the weak solution Sw that passes high-temperature solution heat exchanger 33 among off-gas liquid solution heat exchanger 35C.From the waste gas e that off-gas liquid solution heat exchanger 35C derives, then the weak solution Sw of warm solution heat exchanger 32 carries out heat exchange in off-gas liquid solution heat exchanger 35B and in passing.Waste gas e from off-gas liquid solution heat exchanger 35B derives then carries out heat exchange with the weak solution Sw that passes cryogenic fluid heat exchanger 31 in off-gas liquid solution heat exchanger 35A.In this case, can improve the temperature of the weak solution Sw that imports high-temp regenerator G3 and middle temperature regenerator G2, low-temperature regenerator G1.
Shown in Fig. 7 (b), be set up in parallel cryogenic fluid heat exchanger 31 and off-gas liquid solution heat exchanger 35A respectively, and middle temperature solution heat exchanger 32 and off-gas liquid solution heat exchanger 35B, under the situation of high-temperature solution heat exchanger 33 and off-gas liquid solution heat exchanger 35C, weak solution Sw is in the discharge side shunting of pyrosol pump 13, its part imports high-temp regenerator G3 after high-temperature solution heat exchanger 33 places and high temperature concentrated solution Sh3 carry out heat exchange, remaining flows through weak solution pipe 43D, walk around high-temperature solution heat exchanger 33 and import off-gas liquid solution heat exchanger 35C, carry out heat exchange with the waste gas e that discharges from high-temp regenerator G3, import high-temp regenerator G3 then.The waste gas e that derives from off-gas liquid solution heat exchanger 35C then passes cryogenic fluid heat exchanger 31, shunt, flow into weak solution pipe 42D then, in off-gas liquid solution heat exchanger 35B with walk around in the weak solution Sw of warm solution heat exchanger 32 carry out heat exchange.Remaining part of passing the weak solution Sw of cryogenic fluid heat exchanger 31 back shunting flows through weak solution pipe 41, intactly imports low-temperature regenerator G1, warm solution heat exchanger 32 during remaining weak solution Sw imports, carry out heat exchange with middle temperature concentrated solution Sh2, warm regenerator G2 in importing then.The weak solution Sw that imports to cryogenic fluid heat exchanger 31 is a part of shunting in the discharge side of middle temperature solution pump 12, remaining the weak solution Sw that shunts in the discharge side of middle temperature solution pump 12 flows through weak solution pipe 41D, imports off-gas liquid solution heat exchanger 35A, carries out heat exchange with the waste gas e that derives from off-gas liquid solution heat exchanger 35B, imports low-temperature regenerator G1 then.In this case, by adjusting each solution heat exchanger 31,32,33 and the off-gas liquid solution heat exchanger 35A that is set up in parallel with it, the solution split ratio of 35B, 35C, can simultaneously adjust the heat exchange amount of each heat exchanger 31,32,33,35A, 35B, 35C, the temperature that one side improves the weak solution Sw that imports to each regenerator G1～G3.
In addition, at Fig. 5～each heat exchanger 36 illustrated in fig. 7,37, the heat exchanger that is provided with among 35A～35C, do not need to have illustrated whole, but can suitably select to be provided with according to the operation condition of absorption refrigerating machine, described each heat exchanger 36,37,35A～35C and uses in by the recuperation of heat of carrying out from the heat exchange of the waste gas of high-temp regenerator G3 ' and weak solution Sw in the recuperation of heat that the heat exchange of draining (the De レ Application) Vf2 of draining (De レ Application) Vf3 by middle temperature regenerator G2 or low-temperature regenerator G1 and weak solution Sw is carried out.
(appending the device that deflagrates)
In the absorption refrigerating machine of each above-mentioned triple function, also the interflow portion of the concentrated solution that can mix with middle temperature concentrated solution Sh2 at high temperature concentrated solution Sh3 and the low temperature concentrated solution Sh1 of importing absorber A is provided with the device that deflagrates.Operating condition according to absorption refrigerating machine, be higher than at the saturation pressure of high temperature concentrated solution Sh3 under the situation of saturation pressure of the concentrated solution that low temperature concentrated solution Sh1 mixes with middle temperature concentrated solution Sh2, when it collaborates, along with the further refrigerant steam that produces of the pressure reduction of high temperature concentrated solution Sh3.Under the big situation of the refrigerant quantity of steam of interflow portion generation, problems such as corrosion might take place in pipeline, therefore, the influence of the generation of evaporation again of the device that deflagrates, mitigation refrigerant steam can be set.And, also can be at the pipeline of the top of the device that deflagrates connection guiding low-temperature regenerator G1 or condenser C, the refrigerant steam that will produce in the device that deflagrates is carried to low-temperature regenerator G1 or condenser C.
(appending flow adjuster)
And, the flow adjuster (not having diagram) of motor-driven valve etc. also can be respectively be set at the high temperature concentrated solution delivery line 46 in the downstream of high-temperature solution heat exchanger 33 and on the downstream of middle temperature solution heat exchanger 32 and middle temperature concentrated solution delivery line 45 before low temperature concentrated solution delivery line 44 is connected.Be typically, though pyrosol pump 13 to high-temp regenerator G3 supply with solution quantity delivered, depend on the derived quantity of the high temperature concentrated solution Sh3 that resistance determined of high temperature concentrated solution delivery line 46, in warm solution pump 12 to middle temperature regenerator G2 supply with solution quantity delivered, depend in the derived quantity of the middle temperature concentrated solution Sh2 that resistance determined of warm concentrated solution delivery line 45, but owing to these are that specified operating condition with absorption refrigerating machine is that benchmark is determined, therefore, under the sub-load condition, do not form the quantity delivered of the solution of cycle efficieny the best.Therefore, flow adjusters such as motor-driven valve can be set on above-mentioned position also, can supply with solution amount according to freezing load.The structure of the flow adjuster of typical motor-driven valve etc. is to be connected with control device 60 by signal cable, and the signal that receives from control device 60 moves.And, even when absorption refrigerating machine firm starts back or freezing load hour or the cooling water temperature solution pump 12,13 when low etc. with minimum rotary speed running, supply with also superfluous to the solution of each regenerator G1～G3, in this case, can control the flow adjuster (under the situation of motor-driven valve, opening) of motor-driven valve etc., make the solution of excess electron excess fraction turn back to absorber A.
(to the flow of solution of low-temperature regenerator)
In the above description, in warm solution pump 12 the weak solution Sw of absorber A is carried side by side to middle temperature regenerator G2 and low-temperature regenerator G1, but also can be earlier weak solution Sw be all carried to middle temperature regenerator G2, the middle temperature concentrated solution Sh2 that warm regenerator G2 is therefrom derived imports low-temperature regenerator G1.And, though be pyrosol pump 13 the weak solution Sw of absorber A is carried to high-temp regenerator G3, in warm solution pump 12 the weak solution Sw of absorber A is carried to middle temperature regenerator G2 and low-temperature regenerator G1, but also can carry to high-temp regenerator G3 and low-temperature regenerator G1, carry to middle temperature regenerator G2 by middle temperature solution pump 12 by pyrosol pump 13.
Claims (4)
1. the absorption refrigerating machine of a triple function has: absorber, low-temperature regenerator, middle temperature regenerator, high-temp regenerator, middle temperature solution pump and pyrosol pump,
Absorber absorbs refrigerant steam, makes described solution become the weak solution that has reduced concentration with solution;
Low-temperature regenerator imports described weak solution from described absorber, makes refrigerant evaporation by heating described weak solution, concentration is risen;
In warm regenerator import described weak solution from described absorber, use than temperature high in the described low-temperature regenerator and make refrigerant evaporation, concentration is risen by heating described weak solution;
High-temp regenerator imports described weak solution from described absorber, uses than temperature high in the warm regenerator in described and makes refrigerant evaporation, concentration is risen by heating described weak solution;
In warm solution pump from described absorber described weak solution warm regenerator to described is carried;
The pyrosol pump is carried described weak solution from described absorber to described high-temp regenerator, be with described in the pump that separates of warm solution pump.
2. the absorption refrigerating machine of triple function as claimed in claim 1, described high-temp regenerator evaporates refrigerant and high temperature concentrated solution side that concentration has risen in derivation from described weak solution, have the high-temp regenerator solution tank that accumulates described high temperature concentrated solution;
Warm regenerator in described evaporates refrigerant and middle temperature concentrated solution side that concentration has risen in derivation from described weak solution, have accumulate described in the middle temperature regenerator solution tank of warm concentrated solution;
Have control device, this control device is regulated the discharge rate of described pyrosol pump, makes in the described high-temp regenerator solution tank or the liquid level of the intrinsic described high temperature concentrated solution of described high-temp regenerator becomes the first regulation liquid level; Simultaneously, regulate described in the discharge rate of warm solution pump, make described in the warm regenerator solution tank or in described in warm regenerator intrinsic described warm concentrated solution become the second regulation liquid level.
3. the absorption refrigerating machine of triple function as claimed in claim 2 has: high temperature pressure detector, high temperature liquid level detector, middle temperature and pressure force detector and middle temperature liquid level detector,
The high temperature pressure detector detects the pressure in the described high-temp regenerator;
The high temperature liquid level detector detects in the described high-temp regenerator solution tank or the high-order liquid level and the low level liquid level of the intrinsic described high temperature concentrated solution of described high-temp regenerator;
Pressure during middle temperature and pressure force detector detection is described in the warm regenerator;
In warm liquid level detector detect described in the high-order liquid level and the low level liquid level of warm concentrated solution in warm regenerator intrinsic described in the warm regenerator solution tank or in described;
Described control device constitutes, the rotary speed that the pressure that detects according to described high temperature pressure detector is regulated described pyrosol pump, and rotary speed is reduced, when detecting described low level liquid level, rotary speed is risen; Simultaneously, the pressure that detects according to temperature and pressure force detector in described regulate described in the rotary speed of warm solution pump, and rotary speed is reduced, when detecting described low level liquid level, rotary speed is risen.
4. the absorption refrigerating machine of triple function as claimed in claim 3, replace described high temperature pressure detector and have the high temperature refrigerant Temperature Detector, this high temperature refrigerant Temperature Detector detects the temperature of the condensed high temperature condensation of refrigerant refrigerant, and described refrigerant evaporates the weak solution in the described high-temp regenerator by heating;
Replace described in the temperature and pressure force detector have in warm refrigerant temperature detector, in this warm refrigerant temperature detector detect refrigerant condensed in the temperature of warm condensation refrigerant, described refrigerant by heat described in weak solution in the warm regenerator evaporate;
Control device constitutes, replacement is by the detected pressure of described high temperature pressure detector, the rotary speed of regulating described pyrosol pump according to the detected temperature of described high temperature refrigerant Temperature Detector, replacement is by the detected pressure of temperature and pressure force detector in described, according to the detected temperature of warm refrigerant temperature detector in described regulate described in the rotary speed of warm solution pump.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005260647 | 2005-09-08 | ||
| JP2005260647A JP2007071475A (en) | 2005-09-08 | 2005-09-08 | Triple-effect absorption refrigerating machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1928463A true CN1928463A (en) | 2007-03-14 |
| CN100549562C CN100549562C (en) | 2009-10-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101291048A Expired - Fee Related CN100549562C (en) | 2005-09-08 | 2006-09-08 | The absorption refrigerating machine of triple function |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2007071475A (en) |
| CN (1) | CN100549562C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013160399A (en) * | 2012-02-01 | 2013-08-19 | Kawasaki Thermal Engineering Co Ltd | Control operation method of absorption refrigerating machine |
| KR102165443B1 (en) * | 2013-07-10 | 2020-10-14 | 엘지전자 주식회사 | Absoption chiller |
| JP6138642B2 (en) * | 2013-09-20 | 2017-05-31 | 荏原冷熱システム株式会社 | Absorption refrigerator |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0384371A (en) * | 1989-08-24 | 1991-04-09 | Sanyo Electric Co Ltd | Double effective absorption refrigerator |
| JP3948815B2 (en) * | 1998-03-13 | 2007-07-25 | 大阪瓦斯株式会社 | Multi-effect absorption refrigerator |
| JP3753356B2 (en) * | 1998-12-03 | 2006-03-08 | 荏原冷熱システム株式会社 | Triple effect absorption refrigerator |
| JP3554858B2 (en) * | 2000-10-23 | 2004-08-18 | 川重冷熱工業株式会社 | Absorption refrigerator |
| CN1139767C (en) * | 2001-12-11 | 2004-02-25 | 上海交通大学 | Parallelly connected three-effect absorption-type refrigerator with vapour cmpression |
| JP2005061652A (en) * | 2003-08-20 | 2005-03-10 | Hitachi Ltd | Absorption refrigerating machine |
-
2005
- 2005-09-08 JP JP2005260647A patent/JP2007071475A/en active Pending
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2006
- 2006-09-08 CN CNB2006101291048A patent/CN100549562C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN100549562C (en) | 2009-10-14 |
| JP2007071475A (en) | 2007-03-22 |
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