CN203177526U

CN203177526U - Double-effect cascaded lithium bromide absorption water chilling unit

Info

Publication number: CN203177526U
Application number: CN2013201676690U
Authority: CN
Inventors: 毛洪财; 曹仲清; 陈杰
Original assignee: Shuangliang Eco Energy Systems Co Ltd
Current assignee: Shuangliang Eco Energy Systems Co Ltd
Priority date: 2013-04-07
Filing date: 2013-04-07
Publication date: 2013-09-04
Anticipated expiration: 2023-04-07

Abstract

The utility model relates to a double-effect cascade lithium bromide absorption chiller, in which a low-pressure generator (2) and a condenser (3) are in a cylinder, a first absorber (4), an evaporator (5), a flash The absorber (6) and the second absorber (7) are in another cylinder, which is divided into two cavities by a partition, the first absorber (4) and the evaporator (5) are in one cavity, and the second absorber ( 7) and flasher (6) in another chamber, high pressure generator (1), high temperature solution heat exchanger (10), low temperature heat exchanger (8), condensation water heat exchanger (9), low pressure generator The device (2), the first absorber (4), the first solution pump (12a), the second absorber (7) and the second solution pump (12b) are connected by pipelines to form a solution loop; the condenser (3), The first throttling device (13) and the flasher (6) are sequentially connected through pipelines. The unit of the utility model has smaller volume, lower cost and lower power consumption.

Description

Economic benefits and social benefits superposition type lithium bromide absorption cold water unit

Technical field

The utility model relates to a kind of lithium bromide absorption cold water unit.Belong to air conditioner technical field.

Background technology

The double-effect lithium bromide absorption type handpiece Water Chilling Units is the driving handpiece Water Chilling Units of a kind of heat energy, and its thermal source is generally steam or high-temperature-hot-water, and the refrigeration degree of depth is minimum generally about 7 ℃.And in actual engineering, often run into and need produce lower temperature cold water while cooling water temperature condition with higher again, be difficult to realize by traditional double-effect lithium bromide absorption type handpiece Water Chilling Units.In order to realize refrigeration demand, often adopt superposition type unit (as Fig. 1), two unit overlappings, a unit is produced cold water and is transported to another unit absorber by water pump 15, as the cooling water of absorber, reduce the COP that partly freezes, obtain the cold demand of required low temperature.This system exists equipment volume bigger, invest problems such as higher, that the water pump power consumption is bigger, limited the application of lithium bromide absorption cold water unit in such occasion, how obtaining the superposition type lithium bromide absorption-type machine unit compacter, that cost is lower, power consumption is littler becomes one of problem of research.

The utility model content

The purpose of this utility model is to overcome above-mentioned deficiency, and the novel economic benefits and social benefits superposition type lithium bromide absorption cold water unit that a kind of volume is littler, cost is lower, power consumption is littler is provided.

The purpose of this utility model is achieved in that a kind of economic benefits and social benefits superposition type lithium bromide absorption cold water unit, it is characterized in that described unit comprises high pressure generator, low pressure generator, condenser, first absorber, evaporimeter, flash evaporation, second absorber, the cryogenic fluid heat exchanger, coagulate water-to-water heat exchanger, high-temperature solution heat exchanger, first cryogenic fluid pump, second cryogenic fluid pump, first solution pump, second solution pump, first throttle device and second throttling arrangement, low pressure generator and condenser are in a cylindrical shell, first absorber, evaporimeter, flash evaporation and second absorber are in another cylindrical shell, be divided into two cavitys by dividing plate, first absorber and evaporimeter are in a cavity, second absorber and flash evaporation are in another cavity, heating surface bank, high pressure generator are not set in the flash evaporation, high-temperature solution heat exchanger, low temperature heat exchanger, coagulate water-to-water heat exchanger, low pressure generator, first absorber, first solution pump, second absorber and second solution pump connect and compose solution loop by pipeline; Condenser, first throttle device are connected by pipeline successively with flash evaporation, and flash evaporation water as refrigerant outlet divides a two-way: the one tunnel links the first absorber tube side import through second cryogenic fluid pump, and the flash evaporation top is linked in the outlet of the first absorber tube side; Another road second throttling arrangement enters evaporimeter, and the outlet of evaporimeter water as refrigerant is linked the evaporimeter top through first cryogenic fluid pump.

The beneficial effects of the utility model are:

The first, arranging does not need the flash evaporation of heating surface bank to substitute an evaporimeter, has simplified set structure;

The second, saved a high pressure generator, a low pressure generator and a condenser by the mode of solution series, reduced the unit heat transfer area, reduced cost, reduced unit volume, reduced the unit floor space;

The 3rd, the water as refrigerant of flash evaporation directly as the cooling water of first absorber, has saved cold water circulation pump, has reduced the operation power consumption;

The 4th, the water as refrigerant of flash evaporation is avoided heat exchange link heat transfer temperature difference directly as the cooling water of first absorber, has reduced system's heat transfer area.

Description of drawings

Fig. 1 is the schematic flow sheet of conventional art.

Fig. 2 is schematic flow sheet of the present utility model.

Reference numeral among the figure:

High pressure generator 1, low pressure generator 2, condenser 3, first absorber 4, evaporimeter 5, flash evaporation 6, second absorber 7, cryogenic fluid heat exchanger 8, coagulate water-to-water heat exchanger 9, high-temperature solution heat exchanger 10, the first cryogenic fluid pump 11a, the second cryogenic fluid pump 11b, the first solution pump 12a, the second solution pump 12b, first throttle device 13, second throttling arrangement 14, water pump 15.

The specific embodiment

As shown in Figure 2, this economic benefits and social benefits superposition type lithium bromide absorption cold water unit is made up of high pressure generator 1, low pressure generator 2, condenser 3, first absorber 4, evaporimeter 5, flash evaporation 6, second absorber 7, cryogenic fluid heat exchanger 8, the pipeline and the valve that coagulate water-to-water heat exchanger 9, high-temperature solution heat exchanger 10, the first cryogenic fluid pump 11a, the second cryogenic fluid pump 11b, the first solution pump 12a, the second solution pump 12b, first throttle device 13, second throttling arrangement 14 and connect each parts.

Low pressure generator 2 and condenser 3 are in a cylindrical shell.First absorber 4, evaporimeter 5, flash evaporation 6 and second absorber 7 are divided into two cavitys by dividing plate in another cylindrical shell, first absorber 4 and evaporimeter 5 are in a cavity, and second absorber 7 and flash evaporation 6 are in another cavity.Heating surface bank is not set in the flash evaporation 6.High pressure generator 1, high-temperature solution heat exchanger 10, low temperature heat exchanger 8, coagulate water-to-water heat exchanger 9, low pressure generator 2, first absorber 4, the first solution pump 12a, second absorber 7 and the second solution pump 12b and connect and compose solution loop by pipeline; Condenser 3, first throttle device 13 and flash evaporation 6 are connected successively by pipeline, and the outlet of flash evaporation 6 water as refrigerants divides a two-way: the one tunnel links the 4 tube side imports of first absorber through the second cryogenic fluid pump 11b, and flash evaporation 6 tops are linked in the outlet of first absorber, 4 tube sides; Another road second throttling arrangement 14 enters evaporimeter 5, and the outlet of evaporimeter 5 water as refrigerants is linked evaporimeter 5 tops through the first cryogenic fluid pump 11a.

In high pressure generator 1, bromize lithium dilute solution is heated by thermal source, become intermediate solution after going out refrigerant vapour, the intermediate solution that produces enters low pressure generator 2 through high-temperature solution heat exchanger 10 1 sides, become concentrated solution after going out refrigerant vapour, the concentrated solution that produces enters first absorber 4 through cryogenic fluid heat exchanger 8 one sides, absorb the refrigerant vapour of flash-pot 5, becoming intermediate solution is driven by the first solution pump 12a again, enter second absorber 7, absorption is from the refrigerant vapour of flash evaporation 6, become weak solution, driven by the second solution pump 12b again, through cryogenic fluid heat exchanger 8 opposite sides, coagulate water-to-water heat exchanger and high-temperature solution heat exchanger 10 opposite sides and enter high pressure generator 1, finish the solution circulation.In condenser 3, refrigerant vapour from low pressure generator 2 is condensed into water as refrigerant, enter flash evaporation 6 through first throttle device 13, liquid refrigerant moisture behind the shwoot is two-way: the one tunnel squeezes into first absorber, 4 tube sides through the second cryogenic fluid pump 11b, temperature raises behind the heat of the outer lithium bromide pyrosol of absorption tube, enter flash evaporation 6 again, the refrigerant vapour that shwoot comes out is absorbed by the lithium bromide intermediate solution in second absorber 7.Another road second throttling arrangement 14 enters evaporimeter 5, be driven into evaporimeter 5 top sprays by the first cryogenic fluid pump 11a, outside evaporimeter 5 heat-transfer pipes, evaporate, the heat of absorption tube inner cold water, the refrigerant vapour of generation is absorbed by the bromize lithium concentrated solution in first absorber 4.So far, finish whole refrigerant cycle.

Solution can be that to connect also can be in parallel in above scheme high pressure generator 1, the low pressure generator 2, and first absorber 4 and second absorber, 7 series systems can be just to connect also can be down to connect; The cooling water of second absorber 7 and condenser can be that parallel connection also can be series connection.

Claims

1. A double-effect cascade lithium bromide absorption chiller, characterized in that the unit includes a high-pressure generator (1), a low-pressure generator (2), a condenser (3), a first absorber (4), Evaporator (5), flasher (6), second absorber (7), low temperature solution heat exchanger (8), condensation water heat exchanger (9), high temperature solution heat exchanger (10), first refrigerant pump (11a), second refrigerant pump (11b), first solution pump (12a), second solution pump (12b), first throttling device (13) and second throttling device (14), The low-pressure generator (2) and condenser (3) are in one cylinder, and the first absorber (4), evaporator (5), flasher (6) and second absorber (7) are in another cylinder , divided into two chambers by a partition, the first absorber (4) and evaporator (5) are in one chamber, the second absorber (7) and flasher (6) are in the other chamber, flash There is no heat transfer tube bundle in the device (6), high pressure generator (1), high temperature solution heat exchanger (10), low temperature heat exchanger (8), condensation water heat exchanger (9), low pressure generator (2) , the first absorber (4), the first solution pump (12a), the second absorber (7) and the second solution pump (12b) are connected by pipelines to form a solution loop; the condenser (3), the first throttle The device (13) and the flasher (6) are connected sequentially through pipelines, and the refrigerant water outlet of the flasher (6) is divided into two paths: one path is connected to the first absorber (4) through the second refrigerant pump (11b) The tube side inlet, the tube side outlet of the first absorber (4) is connected to the top of the flasher (6); the other way enters the evaporator (5) through the second throttling device (14), and the refrigerant water of the evaporator (5) The outlet is connected to the top of the evaporator (5) through the first refrigerant pump (11a).

2. A double-effect cascade lithium bromide absorption chiller according to claim 1, characterized in that the solutions in the high-pressure generator (1) and the low-pressure generator (2) are connected in series or in parallel; the first absorber (4) and the second absorber (7) are connected in series in forward or reverse series; the cooling water of the second absorber (7) and the condenser (3) is connected in parallel or in series.