CN206648365U - The automatic control system of absorption heat exchange device working medium - Google Patents
The automatic control system of absorption heat exchange device working medium Download PDFInfo
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- CN206648365U CN206648365U CN201720107265.0U CN201720107265U CN206648365U CN 206648365 U CN206648365 U CN 206648365U CN 201720107265 U CN201720107265 U CN 201720107265U CN 206648365 U CN206648365 U CN 206648365U
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Abstract
The utility model discloses a kind of automatic control system of absorption heat exchange device working medium, it includes NaOH solution tank NaOH, solution pump, cryogen tank, cryogenic fluid pump and intelligent controller, solution level sensor is set in NaOH solution tank NaOH, lithium bromide concentration detection sensor and cooling agent liquid level sensor, the delivery port of cryogen tank is set to be respectively communicated to the refrigerant tube and NaOH solution tank NaOH of evaporator by cryogenic fluid pump and three-way magnetic valve in cryogen tank；Intelligent controller is electrically connected with solution level sensor, cooling agent liquid level sensor and lithium bromide concentration detection sensor respectively by signal input circuit；Intelligent controller is electrically connected with solution pump, cryogenic fluid pump and three-way magnetic valve respectively by control circuit.It can automatically balance ratio of the working medium in absorption heat exchange device in each container, and the concentration for automatically controlling lithium bromide in cryogen tank can not be exceeded.
Description
Technical field
The utility model belongs to technical field of heat exchange, and especially a kind of automatically controlling for absorption heat exchange device working medium is
System.
Background technology
Absorption heat exchange device is also referred to as absorption heat pump, and it is a kind of heat supply process based on Absorption heat-transformer, and it is by sending out
The compositions such as raw device, absorber, condenser, evaporator, NaOH solution tank NaOH, cryogen tank, solution pump and cryogenic fluid pump.This absorption heat exchange device
Generally using high boiling lithium bromide absorption agent and lower boiling distilled water refrigerant as working medium.
Referring to Fig. 1, in the prior art, the internal working medium cyclic process of absorption heat exchange device is：Bromine is stored in NaOH solution tank NaOH 1 '
Change lithium solution, lithium-bromide solution is promoted in generator 5 ' by solution pump 3 ', and lithium bromide concentrated solution and water are produced in generator 5 '
Steam, vapor enter in condenser 6 ', and lithium bromide concentrated solution enters in absorber 7 ', and vapor becomes cold in condenser 6 '
Agent water enters in evaporator 8 ', and cryogen water section is evaporated in evaporator 8 ', and vapor is entered in absorber 7 ', water as refrigerant
Enter in cryogen tank 2 ', the water as refrigerant in cryogen tank 2 ' is constantly lifted to evaporator 8 ' by cryogenic fluid pump 4 ' and carries out circulation steaming
Hair, the vapor entered from evaporator 8 ' in absorber 7 ' become water as refrigerant, and water as refrigerant in generator 5 ' with entering suction
Lithium bromide concentrated solution mixing in receipts device 7 ' becomes lithium-bromide solution and entered back into solution filling 1 '.
In the cyclic process of working medium, micro lithium bromide can by vapor carry secretly enter condenser in, then again with
Water as refrigerant is flowed into evaporator and cryogen tank, and because lithium bromide will not be evaporated, the lithium bromide in cryogen tank can form accumulation,
Reach certain concentration when lithium bromide accumulates in cryogen tank, the operating efficiency of absorption heat exchange device will be influenceed.
The content of the invention
The purpose of this utility model is solve problems of the prior art, there is provided a kind of absorption heat exchange device working medium
Automatic control system, it can automatically balance ratio of the working medium in absorption heat exchange device in each container, automatically control
The concentration of lithium bromide can not be exceeded in cryogen tank.
Technical scheme is realized in used by the utility model：A kind of absorption heat exchange device working medium automatically controls
System, it includes NaOH solution tank NaOH, solution pump, cryogen tank and cryogenic fluid pump, and the liquid outlet of NaOH solution tank NaOH sets connection generator internal upper part
Solution conduit, solution pump is set in solution conduit, it is characterised in that：It also includes an intelligent controller, is set in NaOH solution tank NaOH
Solution level sensor, lithium bromide concentration detection sensor and cooling agent liquid level sensor, cryogen tank is set to go out in cryogen tank
The mouth of a river connects cryogenic fluid pump, the input mouth of pipe of the output mouth of pipe connection three-way magnetic valve of cryogenic fluid pump, an output of three-way magnetic valve
The mouth of pipe is communicated to the refrigerant tube of evaporator, and another output mouth of pipe of three-way magnetic valve passes through pipeline connection NaOH solution tank NaOH；Intelligence control
Device processed by signal input circuit respectively with solution level sensor, cooling agent liquid level sensor and lithium bromide concentration detection sensor
Electrical connection；Intelligent controller is electrically connected with solution pump, cryogenic fluid pump and three-way magnetic valve respectively by control circuit.
Further, lithium bromide is 3.464g/mL in the density of normal temperature, and the density of water is 1g/mL, detects the density of water as refrigerant
With regard to that can estimate concentration of the lithium bromide in water as refrigerant, therefore, described lithium bromide concentration detection sensor can use liquid close
Sensor is spent to estimate.
Operation principle of the present utility model：
1) when the solution level in NaOH solution tank NaOH is very low, illustrate that the water in solution all enters cryogen tank and evaporator
In, solution level sensor detected value it is low to setting critical value when, intelligent controller start three-way magnetic valve allows from cryogen
The water as refrigerant pumped out in tank enters in NaOH solution tank NaOH.
2) when the lithium bromide concentration in cryogen tank is too big, the operating efficiency of absorption heat exchange device can reduce, and lithium bromide is dense
When spending detection sensor detected value more than the critical value set, intelligent controller startup three-way magnetic valve, which allows from cryogen tank, to be pumped out
Water as refrigerant enter NaOH solution tank NaOH in.
3) when the water level in cryogen tank is too low, cooling agent liquid level sensor detected value it is low to setting critical value when, intelligence
Controller startup three-way magnetic valve allows from cryogen tank the water as refrigerant pumped out to enter in evaporator and enters normal work shape
State.
The utility model has the advantage of：
In the process of running, easily there are two kinds of situations, one kind is that water as refrigerant exists in absorption heat exchange device of the present utility model
Cumulative in cryogen tank and evaporator, a kind of situation is that micro lithium bromide can be carried secretly into condenser by vapor,
In cryogen tank in water as refrigerant lithium bromide concentration more and more higher, above-mentioned two situations eventually result in absorption heat exchange device work effect
The reduction of rate even can not normal work.
The utility model is by sensor and intelligent controller automatic detection and realizes automated control operation, it is not necessary to stops
Machine is with regard to that can correct the appearance of above-mentioned two situations.It can automatically balance ratio of the working medium in each container of absorption heat exchange device
Example, the concentration for automatically controlling lithium bromide in cryogen tank can not be exceeded, ensures absorption heat exchange device normal operation incessantly.
Brief description of the drawings
Fig. 1 is a kind of absorption heat exchange device structural representation of the prior art；
Fig. 2 is the automatic control system structural representation of the utility model absorption heat exchange device working medium.
In Fig. 1：1 '-NaOH solution tank NaOH, 2 '-cryogen tank, 3 '-solution pump, 4 '-cryogenic fluid pump, 5 '-generator, 6 '-condenser, 7 '-
Absorber, 8 '-evaporator；
In Fig. 2：1- NaOH solution tank NaOHs, 2- cryogen tanks, 3- solution pumps, 4- cryogenic fluid pumps, 5- intelligent controllers, the inspection of 6- lithium bromide concentrations
Survey sensor, 7- cooling agent liquid level sensors, 8- solution level sensors, 9- three-way magnetic valves.
Embodiment
The utility model is further illustrated with reference to the accompanying drawings and examples.
A kind of automatic control system of absorption heat exchange device working medium, it includes NaOH solution tank NaOH 1, solution pump 3, cryogen tank 2, cryogen
Pump 4 and intelligent controller 5；NaOH solution tank NaOH 1 is communicated with to the solution conduit of generator internal upper part, and solution pump 3 is set in solution conduit,
The delivery port connection cryogenic fluid pump 4 of cryogen tank 2, the input mouth of pipe of the output mouth of pipe connection three-way magnetic valve 9 of cryogenic fluid pump 4, three are powered
One output mouth of pipe of magnet valve 9 is communicated to the refrigerant tube of evaporator, and another output mouth of pipe of three-way magnetic valve 9 is connected by pipeline
Logical NaOH solution tank NaOH 1；Solution level sensor 8 is set in NaOH solution tank NaOH 1, lithium bromide concentration detection sensor 6 is set in cryogen tank 2
With cooling agent liquid level sensor 7；Intelligent controller 5 is passed with solution level sensor 8, cryogen liquid level respectively by signal input circuit
Sensor 7 and lithium bromide concentration detection sensor 6 electrically connect；Intelligent controller 5 by control circuit respectively with solution pump 3, cryogen
Pump 4 and three-way magnetic valve 9 electrically connect.Wherein, described lithium bromide concentration detection sensor 6 is liquid density sensor.
Finally it should be noted that above embodiment is only illustrating the technical solution of the utility model, rather than
Limitation to scope of protection of the utility model, the letter that one of ordinary skill in the art is carried out to the technical solution of the utility model
Single modification or equivalent substitution, all without departing from the spirit and scope of technical solutions of the utility model.
Claims (2)
1. a kind of automatic control system of absorption heat exchange device working medium, it includes NaOH solution tank NaOH, solution pump, cryogen tank and cryogenic fluid pump,
The liquid outlet of NaOH solution tank NaOH sets the solution conduit of connection generator internal upper part, and solution pump is set in solution conduit, it is characterised in that：It
Also include an intelligent controller, solution level sensor is set in NaOH solution tank NaOH, set lithium bromide concentration to examine in cryogen tank
Sensor and cooling agent liquid level sensor, the delivery port connection cryogenic fluid pump of cryogen tank are surveyed, the output mouth of pipe connection three of cryogenic fluid pump is powered
The input mouth of pipe of magnet valve, one of the three-way magnetic valve output mouth of pipe are communicated to the refrigerant tube of evaporator, three-way magnetic valve it is another
The individual output mouth of pipe passes through pipeline connection NaOH solution tank NaOH；Intelligent controller by signal input circuit respectively with solution level sensor,
Cooling agent liquid level sensor and the electrical connection of lithium bromide concentration detection sensor；Intelligent controller by control circuit respectively with solution
Pump, cryogenic fluid pump and three-way magnetic valve electrical connection.
2. the automatic control system of absorption heat exchange device working medium according to claim 1, it is characterised in that：Described bromination
Lithium concentration detection sensor is liquid density sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720107265.0U CN206648365U (en) | 2017-01-23 | 2017-01-23 | The automatic control system of absorption heat exchange device working medium |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720107265.0U CN206648365U (en) | 2017-01-23 | 2017-01-23 | The automatic control system of absorption heat exchange device working medium |
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| CN206648365U true CN206648365U (en) | 2017-11-17 |
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| CN201720107265.0U Active CN206648365U (en) | 2017-01-23 | 2017-01-23 | The automatic control system of absorption heat exchange device working medium |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109458752A (en) * | 2018-12-27 | 2019-03-12 | 双良节能系统股份有限公司 | A kind of on-line checking density steam double-effect type suction-type lithium bromide low-temperature cold water unit |
| CN109458754A (en) * | 2018-12-27 | 2019-03-12 | 双良节能系统股份有限公司 | A kind of on-line checking density steam single-effect lithiumbromide absorption type low-temperature water cooler |
-
2017
- 2017-01-23 CN CN201720107265.0U patent/CN206648365U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109458752A (en) * | 2018-12-27 | 2019-03-12 | 双良节能系统股份有限公司 | A kind of on-line checking density steam double-effect type suction-type lithium bromide low-temperature cold water unit |
| CN109458754A (en) * | 2018-12-27 | 2019-03-12 | 双良节能系统股份有限公司 | A kind of on-line checking density steam single-effect lithiumbromide absorption type low-temperature water cooler |
| CN109458754B (en) * | 2018-12-27 | 2024-02-06 | 双良节能系统股份有限公司 | Single-effect lithium bromide absorption type low-temperature water chilling unit for online detection of density steam |
| CN109458752B (en) * | 2018-12-27 | 2024-02-06 | 双良节能系统股份有限公司 | Double-effect lithium bromide absorption type low-temperature water chilling unit for online detection of density steam |
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