CN212179274U - Special exhaust steam type lithium bromide absorption type unit - Google Patents
Special exhaust steam type lithium bromide absorption type unit Download PDFInfo
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- CN212179274U CN212179274U CN202020662692.7U CN202020662692U CN212179274U CN 212179274 U CN212179274 U CN 212179274U CN 202020662692 U CN202020662692 U CN 202020662692U CN 212179274 U CN212179274 U CN 212179274U
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- exhaust steam
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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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Abstract
The utility model belongs to the field of heating ventilation air conditioning equipment, in particular to an exhaust steam type lithium bromide absorption special unit, which comprises an evaporator, an absorber, a condenser, a regenerator and an exhaust steam condensate recovery box; the evaporator and the absorber are arranged in a cavity and are arranged up and down, and the evaporator is arranged above the absorber; the waste steam and the waste heat generated by the process system enter an evaporator heat transfer pipe bundle adopting a special pipe distribution mode through an evaporator waste steam inlet pipeline, the evaporator heat transfer pipe bundle is transversely arranged along the width direction of the unit or longitudinally arranged along the height direction of the unit, and the two modes have advantages respectively. The utility model discloses can directly utilize negative pressure exhaust steam as low temperature drive heat source, through retrieving the exhaust steam waste heat, prepare high temperature hot water and carry out heating or the handicraft and use heat, improve energy utilization, the waste low level waste heat resource of the make full use of help industrial enterprise in its production process creates extra economic value.
Description
Technical Field
The utility model relates to a special unit of exhaust steam type lithium bromide absorption formula belongs to the heating and ventilation air conditioning equipment field.
Background
Energy and environmental issues are the focus of attention in the world today and are a long and arduous development plan. Under the trend environment of energy conservation and emission reduction, the energy-saving technology is rapidly developed. Although energy-saving innovation and improvement technology are continuously perfected and optimized, and great progress is made in the aspect of digging and utilizing waste heat resources, a large amount of waste heat cannot be effectively recycled or is not fully utilized due to various adverse factors such as harsh process requirement conditions or immature technical schemes. For example, the steam exhaust resource with extremely low pressure and even negative pressure generated by the production process flow of the thermal power plant has large volume flow, low temperature, extremely poor heat source driving force and relatively low waste heat grade, but a large amount of latent heat is directly discharged due to difficult recovery in the process, which is not only waste of energy, but also pollutes the ecological environment.
SUMMERY OF THE UTILITY MODEL
For the problem of the exhaust steam waste heat recovery difficulty of solving low temperature negative pressure, the utility model provides a special unit of exhaust steam type lithium bromide absorption formula can directly utilize the exhaust steam of low temperature negative pressure as low temperature drive heat source, through retrieving the exhaust steam waste heat, prepares high temperature hot water and heats or the handicraft is with heat, has improved energy utilization and has rateed, and the useless low level waste heat resource in the help industrial enterprise make full use of its production process creates extra economic value.
The utility model discloses a realize that the technical scheme that above-mentioned purpose adopted is: an exhaust steam type lithium bromide absorption special unit comprises an evaporator, an absorber, a condenser, a regenerator and an exhaust steam condensate recovery box; the evaporator and the absorber are arranged in a cavity and are arranged up and down, and the evaporator is arranged above the absorber; the regenerator is connected with a high-temperature heat source inlet pipeline and a high-temperature heat source outlet pipeline, the absorber is connected with a warm water inlet pipeline, the condenser is connected with a warm water outlet pipeline, and the absorber and the condenser are connected through a warm water pipeline; the regenerator and the condenser are connected with each other through a pipeline; an exhaust steam condensate outlet pipeline of the evaporator is connected with an exhaust steam condensate recovery box.
And a liquid level electrode is arranged on the exhaust steam condensate recovery tank.
And the exhaust steam condensate recovery box and the exhaust steam condensate outlet pipeline of the evaporator are respectively connected to an artificial intelligent air extractor.
And an exhaust steam condensate pump is arranged at an outlet of the exhaust steam condensate recovery tank.
And a check valve is arranged at the outlet of the dead steam extraction and condensation pump.
Multiple nozzles are arranged at multiple positions in the evaporator, which are perpendicular to the length direction of the heat transfer pipe bundle.
The heat transfer pipe bundle in the evaporator is transversely arranged along the width direction of the unit, and an evaporator exhaust steam inlet pipeline and an evaporator exhaust steam condensate outlet pipeline are respectively arranged on the left side and the right side of the upper part of the cavity.
The heat transfer pipe bundle is obliquely arranged in a staggered mode, two adjacent rows of heat transfer pipes are arranged in a staggered mode, and the pipe orifice of the heat transfer pipe at the exhaust steam inlet end of the evaporator is higher than the pipe orifice of the heat transfer pipe at the exhaust steam condensate outlet end of the evaporator.
The heat transfer pipe bundle in the evaporator is longitudinally arranged along the height direction of the unit, an exhaust steam inlet pipeline of the evaporator is connected with the upper end of the cavity, and an exhaust steam condensate outlet pipeline of the evaporator is connected with the middle position of the side surface of the cavity.
The utility model has the advantages that:
1. the unit utilizes high temperature to drive the heat source, absorbs the heat of the exhaust steam, and prepares high-temperature hot water for heating or process heat. The exhaust steam discharges heat in the evaporator to form exhaust steam condensate which is discharged to the process flow for recycling through the exhaust steam condensate pump.
2. In order to keep the exhaust steam system in a vacuum state all the time, an artificial intelligent air extractor is arranged on an exhaust steam condensate recovery box and an exhaust steam condensate outlet pipeline of an evaporator, so that non-condensable gas of an exhaust steam pipeline can be effectively discharged, intelligent judgment and automatic air extraction on the vacuum environment of the exhaust steam system are realized, the pressure of an exhaust steam condensate outlet end can be reduced, the driving force of negative-pressure exhaust steam is enhanced, and smooth flowing of the exhaust steam in a heat transfer pipe is ensured.
3. The evaporator heat transfer pipe bundle is transversely arranged along the width direction of the unit, the flow velocity of exhaust steam can be reduced by increasing the flow area of the exhaust steam, the resistance in the pipe can be reduced by shortening the length of the pipe bundle, the process of recovering the waste heat of the negative pressure exhaust steam can be smoothly carried out, and the optimization of the heat exchange efficiency of the unit can be ensured.
4. When the evaporimeter heat-transfer pipe bundle adopts along unit width direction transverse arrangement, heat-transfer pipe bundle staggered inclination stringing, guarantee that the both ends mouth of pipe all is not on same water flat line about every heat-transfer pipe, the heat-transfer pipe mouth of pipe of evaporimeter exhaust steam entry end is higher than the heat-transfer pipe mouth of pipe of evaporimeter exhaust steam condensate outlet end, can make exhaust steam condensate rely on action of gravity to discharge along heat-transfer pipe inner wall incline direction by oneself, prevent that exhaust steam condensate from storing up in the heat-transfer pipe, cause the increase of intraductal resistance, and then influence the smooth and easy flow of exhaust steam in the pipe.
5. The evaporator adopts refrigerant multiple injection technology, and the tube distribution mode of the staggered arrangement of the heat transfer tube bundles of the evaporator is matched, so that refrigerant water can be more directly sprayed onto the surface of each heat transfer tube, liquid films on the periphery of the heat transfer tube wall are more uniform, the heat exchange mode is more efficient, the heat exchange coefficient of the heat transfer tubes is greatly improved, and the heat exchange efficiency of the unit is further improved.
6. The evaporator heat transfer pipe bundle is longitudinally arranged along the height direction of the unit, so that exhaust steam condensate after heat release and condensation can quickly flow along the inner wall of the pipe under the action of gravity, the exhaust steam flow is stronger than that of other pipe distribution modes, the effective discharge of the exhaust steam condensate is facilitated, the heat exchange effect is enhanced, and the unit is favorable for maintaining a high-efficiency and stable running state.
7. The unit can directly utilize negative pressure exhaust steam as a low-temperature driving heat source, and high-temperature hot water is prepared for heating or process heat by recovering the waste heat of the exhaust steam, so that the energy utilization rate is improved, the industrial enterprise is helped to fully utilize waste low-level waste heat resources in the production process, and additional economic value is created.
Drawings
FIG. 1 is a schematic flow chart of a steam exhaust type lithium bromide absorption type special unit of the present invention;
FIG. 2 is a side view of an evaporator heat transfer tube bundle of the present invention in a transverse width-wise oblique arrangement;
FIG. 3 is a structural diagram of the evaporator heat transfer tube bundle of the present invention vertically arranged in the height direction;
FIG. 4 is a schematic structural view of the staggered evaporator tube groups and the nozzle distribution of the present invention;
in the figure: 1. the system comprises an evaporator, 2 an absorber, 3 a regenerator, 4 a condenser, 5 an exhaust steam extraction and condensation pump, 6 an exhaust steam condensation water recovery box, 7 an evaporator exhaust steam inlet pipeline, 8 an evaporator exhaust steam condensation water outlet pipeline, 9 a high-temperature heat source inlet pipeline, 10 a high-temperature heat source outlet pipeline, 11 a liquid level electrode, 12 a check valve, 13 a warm water inlet pipeline, 14 a warm water outlet pipeline, 15 an artificial intelligent air extractor and 16 a nozzle.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments, but the present invention is not limited to the specific embodiments.
Example 1
The exhaust steam type lithium bromide absorption special unit shown in the attached figure comprises an evaporator 1, an absorber 2, a condenser 4, a regenerator 3 and an exhaust steam condensate recovery tank 6; the evaporator 1 and the absorber 2 are arranged in a cavity and are arranged up and down, and the evaporator 1 is arranged above the absorber 2; the regenerator 3 is connected with a high-temperature heat source inlet pipeline 9 and a high-temperature heat source outlet pipeline 10, a high-temperature heat source is used as a driving heat source and enters the regenerator 3 through the high-temperature heat source inlet pipeline 9, and a heated solution is discharged from the high-temperature heat source outlet pipeline 10; the absorber 2 is connected with a warm water inlet pipeline 13, the condenser 4 is connected with a warm water outlet pipeline 14, the absorber 2 and the condenser 4 are connected through a warm water pipeline, warm water sequentially enters the absorber 2 and the condenser 4 in series to be heated, and the prepared high-temperature hot water can be used for heating or process heat; the regenerator 3 and the condenser 4 are connected with each other through a pipeline, so that high-temperature refrigerant steam generated by the regenerator 3 enters the condenser 4 to heat warm water; an exhaust steam condensate outlet pipeline 8 of the evaporator is connected with an exhaust steam condensate recovery box 6, exhaust steam waste heat generated by the process system enters the evaporator 1 through an exhaust steam inlet pipeline 7 of the evaporator, and exhaust steam condensate formed after the exhaust steam is condensed and released heat is discharged to the exhaust steam condensate recovery box 6 through the exhaust steam condensate outlet pipeline 8 of the evaporator.
The waste steam condensate recovery tank 6 is provided with a liquid level electrode 11, and the liquid level electrode 11 can automatically control the start and stop and frequency conversion of the waste steam condensate pump according to the waste steam condensate quantity, so that the waste steam condensate in the waste steam condensate recovery tank 6 is smoothly discharged through the waste steam condensate pump 5 and is sent to the process heat return end for recycling.
The exhaust steam condensate recovery box 6 and the exhaust steam condensate outlet pipeline 8 of the evaporator are respectively connected to the artificial intelligent air extractor 15, non-condensable gas of an exhaust steam pipeline can be effectively discharged, intelligent judgment and automatic air extraction of an exhaust steam system vacuum environment are achieved, the exhaust steam is favorably kept good in mobility in the heat transfer pipe, and further the optimization of the heat exchange efficiency of the unit is guaranteed.
And an exhaust steam condensate pump 5 is arranged at an outlet of the exhaust steam condensate recovery tank 6 and is used for discharging exhaust steam condensate in the exhaust steam condensate recovery tank 6 and sending the exhaust steam condensate to a process heat return end for recycling.
And a check valve 12 is arranged at the outlet of the exhaust steam condensate pump 5 to prevent exhaust steam condensate from flowing back to the unit when the unit or the exhaust steam condensate pump stops running.
A plurality of positions perpendicular to heat-transfer pipe tube bank length direction are provided with multiple nozzle 16 in evaporimeter 1, adopt refrigerant multiple injection technique, can directly spray refrigerant water on 1 heat-transfer pipe surface of evaporimeter, make heat-transfer pipe wall liquid film all around more even, have not only strengthened the heat transfer coefficient of heat-transfer pipe, effectively reduce the exhaust steam temperature, retrieve the exhaust steam waste heat, have promoted the heat exchange efficiency of unit moreover by a wide margin.
A heat transfer pipe bundle in the evaporator 1 is transversely arranged along the width direction of the unit, an evaporator exhaust steam inlet pipeline 7 and an evaporator exhaust steam condensate outlet pipeline 8 are respectively arranged on the left side and the right side of the upper part of the cavity, and exhaust steam waste heat generated by the process system enters the heat transfer pipe from an exhaust steam inlet end of the cavity of the evaporator 1 through the evaporator exhaust steam inlet pipeline 7 and is directly discharged through the evaporator exhaust steam condensate outlet pipeline 8.
The heat-transfer pipe tube bank staggered inclined tube distribution, two adjacent heat-transfer pipe staggered arrangements, the heat-transfer pipe mouth of pipe of evaporimeter exhaust steam entry end is higher than the heat-transfer pipe mouth of pipe of evaporimeter exhaust steam condensate outlet end, makes the exhaust steam condensate can rely on action of gravity to discharge by oneself, reduces the exhaust steam condensate and stores up in the intraductal, reduces the pipe resistance to guarantee the smooth and easy flow of exhaust steam in the heat-transfer pipe, and then guarantee the heat exchange efficiency of unit.
Example 2
The exhaust steam type lithium bromide absorption special unit shown in the attached figure comprises an evaporator 1, an absorber 2, a condenser 4, a regenerator 3 and an exhaust steam condensate recovery tank 6; the evaporator 1 and the absorber 2 are arranged in a cavity and are arranged up and down, and the evaporator 1 is arranged above the absorber 2; the regenerator 3 is connected with a high-temperature heat source inlet pipeline 9 and a high-temperature heat source outlet pipeline 10, the absorber 2 is connected with a warm water inlet pipeline 13, the condenser 4 is connected with a warm water outlet pipeline 14, and the absorber 2 and the condenser 4 are connected through the warm water pipeline; the regenerator 3 and the condenser 4 are connected to each other by a pipeline; an exhaust steam condensate outlet pipeline 8 of the evaporator is connected with an exhaust steam condensate recovery box 6. And a liquid level electrode 11 is arranged on the exhaust steam condensate recovery tank 6. The exhaust steam condensate recovery box 6 and the exhaust steam condensate outlet pipeline 8 of the evaporator are respectively connected to an artificial intelligent air extractor 15. An exhaust steam condensate pump 5 is arranged at the outlet of the exhaust steam condensate recovery tank 6. And a check valve 12 is arranged at the outlet of the dead steam extraction and condensation pump 5. Multiple nozzles 16 are provided in the evaporator 1 at a plurality of positions perpendicular to the longitudinal direction of the heat transfer tube bundle.
A heat transfer pipe bundle in the evaporator 1 is longitudinally arranged along the height direction of the unit, an evaporator exhaust steam inlet pipeline 7 is connected with the upper end of the cavity, and an evaporator exhaust steam condensate outlet pipeline 8 is connected with the middle position of the side surface of the cavity. Waste steam heat generated by the process system enters the heat transfer pipe from the upper part of the cavity of the evaporator 1 through an evaporator waste steam inlet pipeline 7, the heat of the waste steam is absorbed by low-temperature refrigerant water sprayed outside the heat transfer pipe, the heat is released and condensed to form waste steam condensate, the waste steam condensate flows along the inner wall of the pipe group vertically arranged in the longitudinal direction, and the waste steam condensate is discharged through an evaporator waste steam condensate outlet pipeline 8. Compared with other pipe distribution modes, the pipe distribution mode is more beneficial to effective discharge of exhaust steam condensate, exhaust steam flows more smoothly, the heat exchange effect is enhanced, and the unit is beneficial to keeping a high-efficiency and stable running state.
A steam exhaust type lithium bromide absorption special machine set is composed of two circulations, namely solution circulation and refrigerant circulation. The dilute solution in the absorber 2 is sent to the regenerator 3 for heating and concentration, and is sent back to the absorber 2 again after becoming the concentrated solution, and absorbs the low-temperature refrigerant steam generated by evaporation in the evaporator 1, and the concentrated solution is diluted and changed back to the dilute solution, namely the solution circulation; high-temperature refrigerant steam generated by heating and evaporating by a high-temperature heat source in the regenerator 3 enters the condenser 4 to secondarily heat warm water from the absorber 2, condensed water formed after condensation and heat release enters the evaporator 1, waste heat of exhaust steam from a process system is absorbed in the cavity in a spraying mode to form low-temperature refrigerant steam, and the low-temperature refrigerant steam is absorbed by concentrated solution in the absorber 2, so that refrigerant circulation is repeatedly formed.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical substance of the present invention do not depart from the technical solution of the present invention, and still belong to the protection scope of the technical solution of the present invention.
Claims (9)
1. An exhaust steam type lithium bromide absorption special unit is characterized by comprising an evaporator (1), an absorber (2), a condenser (4), a regenerator (3) and an exhaust steam condensate recovery box (6); the evaporator (1) and the absorber (2) are arranged in a cavity and are arranged up and down, and the evaporator (1) is arranged above the absorber (2); the regenerator (3) is connected with a high-temperature heat source inlet pipeline (9) and a high-temperature heat source outlet pipeline (10), the absorber (2) is connected with a warm water inlet pipeline (13), the condenser (4) is connected with a warm water outlet pipeline (14), and the absorber (2) is connected with the condenser (4) through the warm water pipeline; the regenerator (3) and the condenser (4) are connected with each other through a pipeline; an exhaust steam condensate outlet pipeline (8) of the evaporator is connected with an exhaust steam condensate recovery box (6).
2. The exhaust steam type lithium bromide absorption special unit as claimed in claim 1, wherein: and a liquid level electrode (11) is arranged on the exhaust steam condensate recovery tank (6).
3. The exhaust steam type lithium bromide absorption special unit as claimed in claim 1, wherein: the exhaust steam condensate recovery box (6) and the evaporator exhaust steam condensate outlet pipeline (8) are respectively connected to an artificial intelligent air extractor (15).
4. The exhaust steam type lithium bromide absorption special unit as claimed in claim 1, wherein: an exhaust steam condensate pump (5) is arranged at the outlet of the exhaust steam condensate recovery tank (6).
5. The exhaust steam type lithium bromide absorption special unit as claimed in claim 4, wherein: and a check valve (12) is arranged at the outlet of the dead steam extraction and condensation pump (5).
6. The exhaust steam type lithium bromide absorption special unit as claimed in claim 1, wherein: multiple nozzles (16) are arranged in a plurality of positions in the evaporator (1) which are vertical to the length direction of the heat transfer pipe bundle.
7. The exhaust steam type lithium bromide absorption special unit as claimed in claim 1, wherein: a heat transfer pipe bundle in the evaporator (1) is transversely arranged along the width direction of the unit, and an evaporator exhaust steam inlet pipeline (7) and an evaporator exhaust steam condensate outlet pipeline (8) are respectively arranged on the left side and the right side of the upper part of the cavity.
8. The exhaust steam type lithium bromide absorption special unit as claimed in claim 7, wherein: the heat transfer pipe bundle is obliquely arranged in a staggered mode, two adjacent rows of heat transfer pipes are arranged in a staggered mode, and the pipe orifice of the heat transfer pipe at the exhaust steam inlet end of the evaporator (1) is higher than the pipe orifice of the heat transfer pipe at the exhaust steam condensate outlet end of the evaporator (1).
9. The exhaust steam type lithium bromide absorption special unit as claimed in claim 1, wherein: the evaporator is characterized in that a heat transfer pipe bundle in the evaporator (1) is longitudinally arranged along the height direction of the unit, an exhaust steam inlet pipeline (7) of the evaporator is connected with the upper end of the cavity, and an exhaust steam condensate outlet pipeline (8) of the evaporator is connected with the middle position of the side surface of the cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020662692.7U CN212179274U (en) | 2020-04-27 | 2020-04-27 | Special exhaust steam type lithium bromide absorption type unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020662692.7U CN212179274U (en) | 2020-04-27 | 2020-04-27 | Special exhaust steam type lithium bromide absorption type unit |
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| Publication Number | Publication Date |
|---|---|
| CN212179274U true CN212179274U (en) | 2020-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020662692.7U Active CN212179274U (en) | 2020-04-27 | 2020-04-27 | Special exhaust steam type lithium bromide absorption type unit |
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| CN (1) | CN212179274U (en) |
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2020
- 2020-04-27 CN CN202020662692.7U patent/CN212179274U/en active Active
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