CN203687463U - Evaporation device capable of achieving automatic stabilizing of liquid level - Google Patents
Evaporation device capable of achieving automatic stabilizing of liquid level Download PDFInfo
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- CN203687463U CN203687463U CN201420040004.8U CN201420040004U CN203687463U CN 203687463 U CN203687463 U CN 203687463U CN 201420040004 U CN201420040004 U CN 201420040004U CN 203687463 U CN203687463 U CN 203687463U
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- water
- evaporimeter
- coolant
- cryogen
- liquid level
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Abstract
The utility model relates to an evaporation device capable of achieving automatic stabilizing of a liquid level. The evaporation device comprises a heat conduction tube bundle, an evaporator, a coolant pump and a coolant spraying tube, wherein the top of the evaporator is provided with a coolant waster inlet and a coolant steam outlet, the bottom of the evaporator is connected with the inlet end of the coolant pump through an inlet tube of the coolant pump, the outlet end of the coolant pump is connected with the coolant spraying tube, a spraying nozzle of the coolant spraying tube is located above the heat conduction tube bundle in the evaporator, the heat conduction tube bundle is located above the liquid level of coolant water in the evaporator, and the coolant water inlet and a coolant water outlet of the heat conduction tube bundle are located in a cavity wall of the evaporator. The evaporation device is characterized in that the upper portion of the evaporator is provided with a coolant water tank, a pressure-equalizing tube is connected between a cavity in the upper potion of the coolant water tank and a cavity in the upper portion of the evaporator, a bottom water outlet end and an upper water inlet end of the coolant water tank are connected with the inlet end and the outlet end of the coolant pump through a water outlet tube and a water inlet tube respectively, and the water outlet tube and the water inlet tube are provided with a water outflow throttling device and a water inflow throttling device respectively. The evaporation device can be widely used for an absorbing-type device and a film-falling-type evaporation device.
Description
Technical field
The utility model relates to a kind of vaporising device, particularly in absorption device, can realize the autostable vaporising device of liquid level about one.
Background technology
In the absorption devices such as Absorption Refrigerator, absorption heat pump, absorption heat exchange unit, vaporising device is one of critical component.Take lithium bromide and water, the vaporising device in the right absorption device of working medium is as example (as shown in Figure 1), and existing vaporising device comprises heat transfer tube bundle 1, evaporimeter 2, cryogenic fluid pump 3 and cryogen shower 4 etc.Water as refrigerant from condenser (not shown) enters in evaporimeter 2 through water as refrigerant import 5, then gets back to evaporimeter 2 through cryogenic fluid pump inlet tube 6, cryogenic fluid pump 3, cryogen shower 4, and sprays on heat transfer tube bundle 1 through the spray nozzle 7 of cryogen shower 4.Chilled water enters the heat transfer tube bundle 1 in evaporimeter 2 by chilled water import 8, and the water as refrigerant of spray absorbs the heat of heat transfer tube bundle 1 interior chilled water and evaporates, and has reduced the temperature of heat transfer tube bundle 1 interior chilled water, has produced refrigeration.After chilled water heat release cooling, export 9 by chilled water and flow out evaporimeter 2.The refrigerant vapour that evaporation produces exports 10 by refrigerant vapour and discharges evaporimeter 2.Owing to being subject to the restriction of vaporising device structure, the volume of evaporimeter 2 is limited, changes greatly once the operating condition of absorption device, and larger fluctuation will occur the water as refrigerant liquid level in evaporimeter 2; In the time that water as refrigerant liquid level is too low, easily make cryogenic fluid pump 3 cavitation occur, inhale the faults such as empty, and in the time that water as refrigerant liquid level is too high, may flood heat transfer tube bundle 1, affect heat exchange effect.
Summary of the invention
For the problems referred to above, the purpose of this utility model is to provide one can realize the autostable vaporising device of liquid level.
For achieving the above object, the utility model is taked following technical scheme: one can realize the autostable vaporising device of liquid level, and it comprises heat transfer tube bundle, evaporimeter, cryogenic fluid pump and cryogen shower; Described evaporimeter top arranges water as refrigerant import and the refrigerant vapour outlet of a connection condenser, between described base of evaporator and the arrival end of described cryogenic fluid pump, be connected a cryogenic fluid pump inlet tube, the port of export of described cryogenic fluid pump connects described cryogen shower, and the spray nozzle of described cryogen shower is positioned at the heat transfer tube bundle top of described evaporimeter; Described heat transfer tube bundle is positioned at the water as refrigerant liquid level top of described evaporimeter, and its chilled water import and chilled water outlet are positioned on the chamber wall of described evaporimeter the same side; It is characterized in that: the top of described evaporimeter arranges a cryogen water tank, between the cavity on the cavity of described water as refrigerant upper box part and described evaporimeter top, be connected a balance pipe, between the water side, bottom of described cryogen water tank and the arrival end of described cryogenic fluid pump, be connected an outlet pipe, on described outlet pipe, be provided with a water outlet throttling arrangement; Between the top water inlet end of described cryogen water tank and the port of export of described cryogenic fluid pump, be connected a water inlet pipe, on described water inlet pipe, be provided with a water inlet throttling arrangement.
Described water outlet throttling arrangement and water inlet throttling arrangement adopt the one in orifice plate, tubule and valve.
The spray nozzle of described cryogen shower is multiple.
The utility model is owing to taking above technical scheme, it has the following advantages: 1, the utility model is due to the pipeline of having set up an external high-order cryogen water tank and be connected with existing vaporising device in existing vaporising device, therefore in the situation that absorption device working conditions change is larger, the utility model can automatically make liquid level in evaporimeter keep stable, thereby can solve in evaporimeter the too high problems such as the too low damage cryogenic fluid pump of liquid level that cause no in pipe or evaporimeter of liquid level.2, the utility model is due to only need to be at absorption device when the operating mode in stable operation, by the disposable correct position that is adjusted to of aperture of water outlet throttling arrangement and water inlet throttling arrangement, absorption device is without the aperture of adjusting water outlet throttling arrangement again and water inlet throttling arrangement in the time of other operating modes, and therefore the utility model is easy to use.3, the utility model can be applied in the absorption devices such as Absorption Refrigerator, absorption heat pump, absorption heat exchange unit, also can be applied in the falling film type evaporation device in other various industrial equipments, and versatility is very strong.The utility model can be widely used in absorption device and various falling film type evaporation device.
Accompanying drawing explanation
Fig. 1 is the structural representation of vaporising device in prior art
Fig. 2 is structural representation of the present utility model
The specific embodiment
Below in conjunction with drawings and Examples, the utility model is described in detail.
As shown in Figure 1, the utility model similarly to the prior art, comprises heat transfer tube bundle 1, evaporimeter 2, cryogenic fluid pump 3 and cryogen shower 4.Evaporimeter 2 tops are provided with the water as refrigerant import 5 of a connection condenser (not shown), evaporimeter 2 bottoms connect the arrival end of cryogenic fluid pump 3 by a cryogenic fluid pump inlet tube 6, the port of export of cryogenic fluid pump 3 connects cryogen shower 4, and the spray nozzle 7 of cryogen shower 4 is positioned at heat transfer tube bundle 1 top of evaporimeter 2.The chilled water import 8 of heat transfer tube bundle 1 and chilled water outlet 9 are arranged on evaporimeter 2 middle parts, the same side, and are positioned at the water as refrigerant liquid level top of evaporimeter 2, and evaporimeter 2 tops are provided with a refrigerant vapour outlet 10.
As shown in Figure 2, the difference of the utility model and prior art is: above evaporimeter 2, be provided with a cryogen water tank 11, between the cavity on cryogen water tank 11 tops and the cavity on evaporimeter 2 tops, be connected a balance pipe 12, to guarantee that evaporimeter 2 equates with the pressure in cryogen water tank 11.Between the water side, bottom of cryogen water tank 11 and the arrival end of cryogenic fluid pump 3, be connected an outlet pipe 13, a water outlet throttling arrangement 14 is set on outlet pipe 13.Between the top of cryogen water tank 11 water inlet end and the port of export of cryogenic fluid pump 3, be connected a water inlet pipe 15, a water inlet throttling arrangement 16 is set on water inlet pipe 15.
In above-described embodiment, water outlet throttling arrangement 14 and water inlet throttling arrangement 16 all can adopt orifice plate, tubule or valve etc.
Vaporising device of the present utility model can be realized the autostable operation principle of liquid level:
Water as refrigerant from condenser enters in evaporimeter 2 through water as refrigerant import 5, then gets back in evaporimeter 2 through the cryogenic fluid pump inlet tube 6, cryogenic fluid pump 3 and the cryogen shower 4 that connect successively, and sprays on heat transfer tube bundle 1 by the spray nozzle 7 of cryogen shower 4.Chilled water enters by chilled water import 8 in the pipeline of heat transfer tube bundle 1 simultaneously, the water as refrigerant of spray on heat transfer tube bundle 1 tube wall absorbs the heat of chilled water in the pipeline of heat transfer tube bundle 1 and evaporates, the refrigerant vapour that evaporation produces exports 10 by refrigerant vapour and discharges from evaporimeter 2, exports 9 flow out after the chilled water heat release cooling in heat transfer tube bundle 1 by chilled water.
In the time of the operating mode of absorption device in stable operation, the fundamental relation formula according to fluid flow G in fluid mechanics principle and resistance coefficient S and pressure differential deltap P:
ΔP＝S*G
2 （1）
Before vaporising device is started working, regulate in advance the aperture of water outlet throttling arrangement 14 and water inlet throttling arrangement 16, determine the resistance coefficient S in formula (1), the water as refrigerant flow that flows out cryogen water tank 11 is equated with the water as refrigerant flow that flows into cryogen water tank 11, thereby make level stability in cryogen water tank 11 in the liquid level of an expection, now, cryogen water tank 11 is H with the liquid level difference in evaporimeter 2, and keeps constant.
Cause the liquid level decline in evaporimeter 2 during when absorption device power condition changing, the inlet pressure of cryogenic fluid pump 3 declines, cause its outlet pressure also slightly to decline, enter the cryogen water yield in cryogen water tank 11 because driving pressure differential deltap P slightly to decline and reduce by water inlet pipe 15, the cryogen discharge reduction flowing out from evaporimeter 2; Simultaneously the liquid level in evaporimeter 2 declines and causes cryogen water tank 11 and the liquid level difference H of evaporimeter 2 to increase, thereby the cryogen water yield that cryogen water tank 11 flows out by outlet pipe 13 is increased, and increases to the cryogen water yield flowing in evaporimeter 2.That is to say while causing the liquid level decline in evaporimeter 2 due to absorption device power condition changing, can automatically regulate by evaporimeter 2 and the water as refrigerant pressure differential in cryogen water tank 11 the cryogen water yield that flows into and flow out evaporimeter 2, therefore the water as refrigerant liquid level in evaporimeter 2 can remain in a stable liquid level all the time automatically.
Cause the liquid level rising in evaporimeter 2 during when absorption device power condition changing, the inlet pressure of cryogenic fluid pump 3 rises, cause its outlet pressure also slightly to rise, enter the cryogen water yield in cryogen water tank 11 because driving pressure differential deltap P slightly to rise and increase by water inlet pipe 15, the cryogen water yield flowing out from evaporimeter 2 increases; Simultaneously the liquid level in evaporimeter 2 rises and causes cryogen water tank 11 and the liquid level difference H of evaporimeter 2 to reduce, thus the cryogen discharge reduction that cryogen water tank 11 is flowed out by outlet pipe 15, to the cryogen discharge reduction flowing in evaporimeter 2.That is to say while causing the liquid level rising in evaporimeter 2 due to absorption device power condition changing, can automatically regulate by evaporimeter 2 and the water as refrigerant pressure differential in cryogen water tank 11 the cryogen water yield that flows into and flow out evaporimeter 2, therefore the water as refrigerant liquid level in evaporimeter 2 can remain in a stable liquid level all the time automatically.
In above-described embodiment, vaporising device of the present utility model can be applied in the absorption devices such as Absorption Refrigerator, absorption heat pump, absorption heat exchange unit, particularly take lithium bromide and water in the right absorption device of working medium, also can be applied in the falling film type evaporation device of other various industrial equipments.
The various embodiments described above are only for illustrating the utility model; wherein structure and the connected mode etc. of each parts all can change to some extent; every equivalents of carrying out on the basis of technical solutions of the utility model and improvement, all should not get rid of outside protection domain of the present utility model.
Claims (3)
1. can realize the autostable vaporising device of liquid level, it comprises heat transfer tube bundle, evaporimeter, cryogenic fluid pump and cryogen shower; Described evaporimeter top arranges water as refrigerant import and the refrigerant vapour outlet of a connection condenser, between described base of evaporator and the arrival end of described cryogenic fluid pump, be connected a cryogenic fluid pump inlet tube, the port of export of described cryogenic fluid pump connects described cryogen shower, and the spray nozzle of described cryogen shower is positioned at the heat transfer tube bundle top of described evaporimeter; Described heat transfer tube bundle is positioned at the water as refrigerant liquid level top of described evaporimeter, and its chilled water import and chilled water outlet are positioned on the chamber wall of described evaporimeter the same side; It is characterized in that:
The top of described evaporimeter arranges a cryogen water tank, between the cavity on the cavity of described water as refrigerant upper box part and described evaporimeter top, be connected a balance pipe, between the water side, bottom of described cryogen water tank and the arrival end of described cryogenic fluid pump, be connected an outlet pipe, on described outlet pipe, be provided with a water outlet throttling arrangement; Between the top water inlet end of described cryogen water tank and the port of export of described cryogenic fluid pump, be connected a water inlet pipe, on described water inlet pipe, be provided with a water inlet throttling arrangement.
2. one as claimed in claim 1 can realize the autostable vaporising device of liquid level, it is characterized in that: described water outlet throttling arrangement and water inlet throttling arrangement adopt the one in orifice plate, tubule and valve.
3. one as claimed in claim 1 or 2 can realize the autostable vaporising device of liquid level, it is characterized in that: the spray nozzle of described cryogen shower is multiple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420040004.8U CN203687463U (en) | 2014-01-22 | 2014-01-22 | Evaporation device capable of achieving automatic stabilizing of liquid level |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420040004.8U CN203687463U (en) | 2014-01-22 | 2014-01-22 | Evaporation device capable of achieving automatic stabilizing of liquid level |
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| Publication Number | Publication Date |
|---|---|
| CN203687463U true CN203687463U (en) | 2014-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420040004.8U Withdrawn - After Issue CN203687463U (en) | 2014-01-22 | 2014-01-22 | Evaporation device capable of achieving automatic stabilizing of liquid level |
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| Country | Link |
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| CN (1) | CN203687463U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103743161A (en) * | 2014-01-22 | 2014-04-23 | 清华大学 | Evaporating device with function of automatic liquid level stabilization |
-
2014
- 2014-01-22 CN CN201420040004.8U patent/CN203687463U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103743161A (en) * | 2014-01-22 | 2014-04-23 | 清华大学 | Evaporating device with function of automatic liquid level stabilization |
| CN103743161B (en) * | 2014-01-22 | 2015-10-28 | 清华大学 | One can realize the autostable vaporising device of liquid level |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140702 Effective date of abandoning: 20151028 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |