CN217817539U

CN217817539U - Lithium bromide unit

Info

Publication number: CN217817539U
Application number: CN202221494745.4U
Authority: CN
Inventors: 钱锟; 蔡力勇; 刘明军; 徐长周; 宋黎; 金熙; 马思图; 王志鹏; 刘奇; 宋媛媛; 黄明硕
Original assignee: Panasonic Appliances Air Conditioning and Refrigeration Dalian Co Ltd
Current assignee: Bingshan Songyang Refrigeration Dalian Co ltd
Priority date: 2022-06-15
Filing date: 2022-06-15
Publication date: 2022-11-15
Anticipated expiration: 2032-06-15

Abstract

The utility model belongs to the technical field of refrigeration plant, concretely relates to lithium bromide unit. The unit device comprises an evaporator, an absorber, a condenser, a regenerator, a solution pump, a guiding head, a gas-liquid separation box, a gas storage cylinder, a heat exchanger, an air pump, a plurality of pipelines and valves. The gas-liquid separation case includes solution import, solution export, noncondensable gas outlet, first drain and second drain. The utility model discloses a bore of each pipeline of control gas separation case, better take out and separate non-condensable gas from the unit, and then improve the running performance and the life of lithium bromide absorption formula unit.

Description

Lithium bromide unit

Technical Field

The utility model belongs to the technical field of refrigeration plant, concretely relates to air conditioning unit.

Background

The requirement of the lithium bromide unit on the vacuum degree is equivalent to the requirement of human beings on oxygen, and the unit does not guarantee the vacuum degree and has no refrigeration effect. Therefore, how to ensure a good vacuum degree of the unit is a great problem to be solved.

In the running process of the unit, the lithium bromide solution and metal generate chemical reaction, certain hydrogen or other non-condensable gases can be generated, and the capacity of the unit can be influenced if the gases are not collected, stored and finally discharged out of the unit. When an operator improperly operates or the unit runs for a period of time, some air enters the unit (mainly iron or copper and lithium bromide solution corrodes in an aerobic state), and if the air is not immediately exhausted, the air corrodes the inner surface of the heat exchange tube or the cylinder, so that the heat exchange causes the result that the unit cannot be normally used.

The conventional units generate a certain amount of gas (mostly H) during initial operation ₂ ) These gases will be in the regeneratorThe generated gas is mixed in the lithium bromide solution to form a mixture with the solution, if the gas mixed in the solution cannot be discharged, the gas carried by the solution can be carried to any part of a regenerator, a heat exchanger and the like by the solution in the running process of the unit, the whole heat exchange effect of the unit is influenced, even the pressure of a certain container is higher than a limit value, and the unit alarms and stops. For example, in chinese patent CN101377365A, the exhaust gas is separated by a plurality of exhaust pipes with holes, but the device is complicated and the cleaning is difficult.

Disclosure of Invention

The utility model aims at solving the gas-liquid separation in the unit and with the gas outgoing problem, provide a take noncondensable gas separation device's lithium bromide unit improves work efficiency.

The utility model discloses a solve the technical scheme that above-mentioned problem adopted and be: a lithium bromide unit, the evaporator 1 is connected with the condenser 3 through the pipeline, the heat exchanger 9 is connected with regenerator 4, absorber 2, solution pump 5 through the pipeline; the absorber 2 is connected with a solution pump 5 through a pipeline, and is characterized by also comprising a pilot head 6, a gas-liquid separation box 7, an air storage cylinder 8, a heat exchanger 9, an air pump 12 and a stop valve; the gas-liquid separation box 7 comprises a solution inlet, a solution outlet, a non-condensable gas outlet, a first sewage outlet and a second sewage outlet;

the solution inlet is connected with the solution pump 5 through a pipeline, and the ejector head 6 is arranged on the pipeline connecting the solution pump 5 and the solution inlet; the solution outlet is connected with the absorber 2 through a pipeline; the non-condensable gas outlet is connected with the gas storage cylinder 8 through a pipeline; the air reservoir 8 is connected to an air pump 12 via a pipeline.

Preferably, the stop valve comprises a switch valve, an absorber air inlet valve and a condenser air inlet valve;

the switch valve comprises a first switch valve arranged at the solution inlet, a second switch valve arranged at the solution outlet, a third switch valve arranged at the non-condensable gas outlet, a fourth switch valve arranged at the first sewage draining port and a fifth switch valve arranged at the second sewage draining port.

Preferably, the first switch valve, the second switch valve, the third switch valve, the fourth switch valve and the fifth switch valve are manual switch valves.

Preferably, the ranges of the first switch valve and the second switch valve are DN20-50, the range of the third switch valve is DN40-100, and the ranges of the fourth switch valve and the fifth switch valve are DN25-40.

Preferably, the gas-liquid separation tank 7 is further provided with a liquid injection valve 18, and the liquid injection valve 18 is provided outside the tank.

Preferably, a gas-liquid separation plate is provided inside the gas-liquid separation tank 7, and a rectangular hole and a semicircular hole are provided on the gas-liquid separation plate.

Preferably, a cross-shaped plate is arranged at the nozzle of the solution outlet; one half of the cross-shaped plate is in the box body, and the other half is in the tube.

Preferably, the lithium bromide unit can be a refrigerator, or an absorption type heat pump.

Preferably, the structure of the lithium bromide unit is a single-stage type, or a double-stage type or a multi-stage type.

Preferably, the lithium bromide unit is a single-effect unit or a double-effect unit or a multi-energy combined unit.

The utility model discloses a lithium bromide unit for solve the phenomenon that gas can not separate in solution and how better messenger's gas outgoing unit is outer in order to reduce the gas of remaining in the unit, thereby reduce its emergence that causes phenomenon such as corruption, pressure height, and then guarantee more high-efficient, the stable operation of whole unit. The utility model provides a technical scheme guarantees gaseous "0" as far as and flows back to in the unit, makes the unit operation more stable, and is more high-efficient, and life can be longer.

Drawings

FIG. 1 is a schematic diagram of a noncondensable gas separation apparatus.

Fig. 2 is a detailed view of the gas-liquid separation tank.

The reference numerals include: the system comprises an evaporator-1, an absorber-2, a condenser-3, a regenerator-4, a solution pump-5, an injection head-6, a gas-liquid separation box-7, an air storage cylinder-8, a heat exchanger-9, an absorber air inlet valve-10, a condenser air inlet valve-11, an air suction pump-12, a switch valve I-13, a switch valve II-14, a switch valve III-15, a switch valve IV-16, a switch valve V-17 and a liquid injection valve-18.

Detailed Description

Fig. 1 is a structural diagram of a non-condensable gas separation device, which is composed of an evaporator 1, an absorber 2, a condenser 3, a regenerator 4, a solution pump 5, an injection head 6, a gas-liquid separation box 7, an air storage cylinder 8, a heat exchanger 9, an air suction pump 12, and pipelines and valves for connecting all parts. The dilute solution in the absorber 2 is sent to the heat exchanger 9 by the solution pump 5 and finally enters the regenerator 4, the dilute solution is heated into a concentrated solution in the regenerator, the concentrated solution flows through the heat exchanger 9, the temperature is reduced, the concentrated solution enters the absorber and drips on the heat exchange tube of the absorber to absorb the refrigerant steam from the evaporator 1, and the refrigerant steam is changed into the dilute solution. On the other hand, in the regenerator, refrigerant vapor generated after the lithium bromide solution heated by an external heat source enters the condenser 3, is condensed into refrigerant water, is subjected to pressure reduction and throttling to become low-temperature refrigerant water, enters the evaporator, is dripped on the heat exchange tube of the evaporator, and cools cold water entering the evaporator. The above steps are repeated to achieve the purpose of preparing low-temperature cold water.

The absorber intake valve 10 and the condenser intake valve 11 are configured to exhaust the non-condensable gas to the absorber 2 and the condenser 3, respectively, and the absorber intake valve 11 is closed when the absorber 2 is exhausted alone, and the absorber intake valve 10 is closed when the condenser 3 is exhausted alone. The absorber inlet valve 10 and the condenser inlet valve 11 in fig. 1 are each DN25 in size.

Fig. 2 is the utility model relates to a gas-liquid separation case, switch valve one to five are manual valve in the picture, switch valve one is solution and draws after penetrating the gas-liquid separation case control valve through the injector, and the absorber control valve is got back to for the solution in the gas-liquid separation case to switch valve two, and switch valve three is the gas outgoing control valve, and switch valve four, switch valve five are the washing blowoff valve, and when the unit normally operates, switch valve one, two, three are opened, and switch valve four, five are closed. As can be seen from fig. 2, the first switching valve and the second switching valve are the same in size and are DN25; the sizes of the four and five switch valves are DN25; valve 3 max, DN50; the different sizes of the valves can show that the calibers of the corresponding pipelines are different.

According to calculation, as the flow = flow rate × cross-sectional area, when the flow of the solution pump 5 is determined, the amount of the solution flowing through the pipeline is a fixed value, and in order to ensure that the flow is sufficiently large at the extraction jet, and indirectly ensure that the pressure of the negative pressure region formed by the part is sufficiently small, the cross-sectional area of the part of the pipeline is reduced, and when the cross-sectional area of the pipe is smaller, the flow rate is larger but cannot be infinitely reduced, the normal flow of the solution needs to be ensured, and the space forming the negative pressure region needs to be as large as possible.

The third switch valve is the largest among the valves, and the corresponding pipeline caliber is also the largest, so that gas can be discharged from the gas-liquid separation box more smoothly and enters the gas storage cylinder.

The corresponding pipeline calibers of the fourth and fifth switch valves are DN25; when the gas-liquid separation box is overhauled, the first switch valve, the second switch valve and the third switch valve are closed firstly to ensure that the vacuum degree of a machine set is not damaged, the fourth switch valve and the fifth switch valve are opened, and the solution in the separator is discharged; and then, closing the valve switch valve four and valve switch valve five, injecting distilled water into the separator through the liquid injection valve, flushing impurities (welding slag or iron rust) in the separator, then discharging the distilled water from the switch valve four and valve switch valve five, and after a period of flushing, ensuring that the interior of the gas-liquid separation box is clean and free of impurities. And then closing the fourth and fifth switch valves tightly, vacuumizing the inside of the gas-liquid separation box from the liquid injection valve side by using an air pump, and opening the first, second and third switch valves after vacuumizing, so that the unit can be ensured to clean the separator on the premise of not damaging the vacuum degree.

The above is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto. Any person skilled in the art should be able to substitute or change the technical solution of the present invention and its inventive concept within the technical scope of the present invention.

Claims

1. A lithium bromide unit, an evaporator (1) is connected with a condenser (3) through a pipeline, and a heat exchanger (9) is connected with a regenerator (4), an absorber (2) and a solution pump (5) through pipelines; the absorber (2) is connected with the solution pump (5) through a pipeline, and is characterized by also comprising a guiding head (6), a gas-liquid separation box (7), a gas storage cylinder (8), a heat exchanger (9), an air pump (12) and a stop valve; the gas-liquid separation box (7) comprises a solution inlet, a solution outlet, a non-condensable gas outlet, a first sewage outlet and a second sewage outlet;

the solution inlet is connected with the solution pump (5) through a pipeline, and the injection head (6) is arranged on the pipeline connecting the solution pump (5) and the solution inlet; the solution outlet is connected with the absorber (2) through a pipeline; the non-condensable gas outlet is connected with the gas storage cylinder (8) through a pipeline; the air storage cylinder (8) is connected with the air pump (12) through a pipeline.

2. The lithium bromide unit as set forth in claim 1, wherein the stop valves comprise a switch valve, an absorber inlet valve and a condenser inlet valve;

the switch valve comprises a switch valve I arranged at the solution inlet, a switch valve II arranged at the solution outlet, a switch valve III arranged at the non-condensable gas outlet, a switch valve IV arranged at the first sewage draining port and a switch valve V arranged at the second sewage draining port.

3. The lithium bromide unit as set forth in claim 2, wherein the first switch valve, the second switch valve, the third switch valve, the fourth switch valve and the fifth switch valve are manual switch valves.

4. The lithium bromide unit as set forth in claim 2 or 3, wherein said first and second switching valves range from DN20-50, said third switching valve range from DN40-100, and said fourth and fifth switching valves range from DN25-40.

5. The lithium bromide unit as set forth in claim 1, characterized in that the gas-liquid separation tank (7) is further provided with a liquid injection valve (18), and the liquid injection valve (18) is disposed outside the tank body.

6. The lithium bromide unit as set forth in claim 1, characterized in that a gas-liquid separation plate is arranged inside the gas-liquid separation box (7), and the gas-liquid separation plate is provided with a rectangular hole and a semicircular hole.

7. The lithium bromide unit as set forth in claim 1, wherein a cross-shaped plate is provided at the nozzle of the solution outlet; one half of the cross-shaped plate is arranged in the box body, and the other half of the cross-shaped plate is arranged in the pipe.

8. The lithium bromide unit according to claim 1, wherein the lithium bromide unit can be a refrigerator, or an absorption type heat pump.

9. The lithium bromide unit as set forth in claim 1, wherein the lithium bromide unit is of a single-stage type, or a double-stage type or a multi-stage type.

10. The lithium bromide unit as set forth in claim 1, wherein the lithium bromide unit is a single-effect unit, or a double-effect unit or a multi-energy combined unit.