Compact first-class lithium bromide absorption heat pump unit for preparing high-temperature heat source

Abstract

The utility model relates to a compact first-class lithium bromide absorption heat pump unit for preparing a high-temperature heat source. Comprising a generator A, a condenser A, a generator B, a condenser B, an evaporator A, an absorber A, an evaporator B, an absorber B, a heat exchanger A, a heat exchanger B, a solution pump A, a refrigerant pump A, a solution pump B, a refrigerant pump B, an internal circulation water pump, an internal circulation medium-temperature hot water system, pipelines, valves and the like, two barrels are adopted to form four cavities, the structure is compact, the evaporator A and the absorber A transfer recycled low-temperature waste heat source heat to internal circulation medium-temperature hot water, the internal circulation medium-temperature hot water enables the evaporation temperature of the evaporator B to be increased and the absorption pressure to be increased, and the absorber B produces a high-temperature heat source; as a single machine is miniaturized, the length, width and height of the unit are small, the loading capacity of the generator and the condenser is improved, the thermal displacement is very small, the high-temperature and high-pressure design conditions can be met without increasing the material cost, the generating pressure and the condensing temperature are increased, and a high-temperature heat source can be produced. The unit improves the comprehensive utilization rate of energy, can produce a high-temperature heat source, expands the application field, and is suitable for occasions with miniaturized single machines.

Description

TECHNICAL FIELD

[0001] The utility model relates to refrigeration equipment technical field, concretely relates to a compact first type lithium bromide absorption heat pump unit of high temperature heat source preparation. BACKGROUND

[0002] The conventional first type lithium bromide absorption heat pump unit (such as Figure 1 ), is using a small amount of high-quality heat source as driving heat source, recycling the low-temperature waste heat in production process, preparing out medium-temperature heat source, for production process use or northern winter heating, and the performance coefficient COP is about 1.7, can save 40% energy consumption, realizes the comprehensive utilization of energy, but the medium-temperature heat source it prepares exports temperature generally does not exceed 95 DEG C at most, when the application place needs high temperature heat source, such as high temperature heat source temperature is greater than 95 DEG C, the conventional unit cannot satisfy the demand. CONTENT OF UTILITY MODEL

[0003] The utility model aims at overcoming the above-mentioned insufficient, provides a compact first type lithium bromide absorption heat pump unit of high temperature heat source preparation of recycling low-temperature waste heat, saves high-quality energy, and expands the application field of heat pump technology.

[0004] The utility model aims at overcoming the above-mentioned insufficient, provides a compact first type lithium bromide absorption heat pump unit of high temperature heat source preparation of recycling low-temperature waste heat, saves high-quality energy, and expands the application field of heat pump technology.

[0005] A compact first type lithium bromide absorption heat pump unit of high temperature heat source preparation, including generator A, condenser A, generator B, condenser B, evaporator A, absorber A, evaporator B, absorber B, heat exchanger A, heat exchanger B, solution pump A, refrigerant pump A, solution pump B, refrigerant pump B and inner circulating water pump,

[0006] Evaporator A, absorber A and evaporator B, absorber B are arranged in the same cylinder, and the cylinder is placed in the lower part, evaporator A and absorber A are in one lowest pressure cavity, and evaporator B and absorber B are in another lower pressure cavity;

[0007] Generator A, condenser A and generator B, condenser B are arranged in the same cylinder, and the cylinder is placed in the upper part;Generator A and condenser A are in one high pressure cavity, and generator B and condenser B are in another high pressure cavity;

[0008] A separate heat pump cycle A with low solution concentration is formed by generator A, condenser A, evaporator A, absorber A, heat exchanger A, solution pump A and refrigerant pump A;

[0009] A high-concentration solution heat pump cycle B is composed of a generator B, a condenser B, an evaporator B, an absorber B, a heat exchanger B, a solution pump B and a refrigerant pump B;

[0010] The inner-circulation medium-temperature hot water forms an inner-circulation medium-temperature hot water system between the absorber A and the evaporator B through the inner-circulation water pump.

[0011] Preferably, the two cavities of the lower cylinder are separated by an intermediate partition plate, the absorber A and the evaporator B are adjacent to each other at the intermediate partition plate, and the absorber A and the evaporator B are arranged on the outer sides, respectively.

[0012] The two cavities of the upper cylinder are also separated by an intermediate partition plate, the generator A and the generator B are adjacent to each other at the intermediate partition plate, the condenser A and the condenser B are arranged on the outer sides, respectively, and the liquid blocking plates are arranged between the generator A and the condenser A and between the generator B and the condenser B, respectively.

[0013] Preferably, the high-temperature heat source is divided into two paths, one of which enters the condenser A, and the other of which enters the absorber B and the condenser B in any order in series, and the two paths of the high-temperature heat source are combined and discharged from the unit after being heated and warmed up.

[0014] Preferably, the high-temperature heat source enters the condenser A through the high-temperature heat source adjusting valve C, the flow of the high-temperature heat source into the heat transfer pipe of the condenser A is adjusted through the high-temperature heat source adjusting valve C, and the temperature of the high-temperature heat source generated by the heat pump cycle A and the heat pump cycle B is ensured to be the same.

[0015] Preferably, the high-temperature heat source enters the absorber B, the condenser B and the condenser A in series, and the high-temperature heat source is discharged from the unit after being heated and warmed up.

[0016] Preferably, the high-temperature heat source enters the condenser A, the condenser B and the absorber B in series, and the high-temperature heat source is discharged from the unit after being heated and warmed up.

[0017] Preferably, the driving heat source is connected in parallel and enters the generator A through the electric regulating valve A and enters the generator B through the electric regulating valve B to heat the solution.

[0018] Preferably, the low-temperature waste heat source enters the heat transfer pipe of the evaporator A, heats the refrigerant water outside the pipe to evaporate, and is discharged from the unit after releasing heat.

[0019] Preferably, the inner-circulation medium-temperature hot water system is supplied with water through the external inner-circulation water pressure regulating device.

[0020] The utility model has the advantages of:

[0021] The utility model discloses a compact first type lithium bromide absorption heat pump unit of high temperature heat source is prepared, adopts two cylinder bodies to form four cavities, through above -mentioned brand -new flow and structure arrangement mode, make unit can prepare high temperature heat source, expand application field, compact structure, is suitable for single machine miniaturization occasion. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a conventional first type lithium bromide absorption heat pump unit.

[0023] Figure 2 It is a structural schematic diagram of a compact first type lithium bromide absorption heat pump unit of high temperature heat source of the utility model.

[0024] Figure 3 It is a structural schematic diagram of another compact first type lithium bromide absorption heat pump unit of high temperature heat source of the utility model.

[0025] Figure 4 It is a structural schematic diagram of still another compact first type lithium bromide absorption heat pump unit of high temperature heat source of the utility model.

[0026] Wherein: evaporator 1, absorber 2, heat exchanger 3, high quality driving heat source out 4, high quality driving heat source in 5, generator 6, condenser 7, high temperature heat source out 8, low temperature heat source out 9, low temperature heat source in 10, high temperature heat source in 11, refrigerant pump 12, solution pump 13, high temperature heat source regulating valve 14, internal circulation constant pressure water supply 15, internal circulation water pump 16, internal circulation medium temperature hot water system 17, refrigerant pump A 18, solution pump B 19, evaporator A 20, absorber A 21, heat exchanger A 22, refrigerant pump B 23, solution pump B 24, evaporator B 25, absorber B 26, heat exchanger B 27, electric regulating valve A 28, electric regulating valve B 29, generator B 32, condenser B 33, condenser A 36, generator A 37. DETAILED DESCRIPTION

[0027] Referring to Figure 2 The utility model relates to a kind of compact first type lithium bromide absorption heat pump unit of high temperature heat source preparation, comprising generator A 37, condenser A 36, generator B 32, condenser B 33, evaporator A 20, absorber A 21, evaporator B 25, absorber B 26, heat exchanger A 22, heat exchanger B 27, solution pump A 19, refrigerant pump A 18, solution pump B 24, refrigerant pump B 23, internal circulation water pump 16, internal circulation medium temperature hot water system 17 and the pipeline, valve and control system between connecting each component, evaporator A 20, absorber A 21 and evaporator B 25, absorber B 26 are arranged in same cylinder, the cylinder is placed in lower part, they are separated with intermediate partition, evaporator A 20 and absorber A 21 in a lowest pressure cavity, evaporator B 25 and absorber B 26 in another lower pressure cavity, and make absorber A 21 and evaporator B 25 adjacent at intermediate partition, evaporator A 20 and absorber B 26 are arranged in outer side respectively;Generator A 37, condenser A 36 and generator B 32, condenser B 33 are arranged in same cylinder, the cylinder is placed in upper part, they are separated with intermediate partition, generator A 37 and condenser A 36 in a high pressure cavity, generator B 32 and condenser B 33 in another high pressure cavity, and make generator A 37 and generator B 32 adjacent at intermediate partition, condenser A 36 and condenser B 33 are arranged in outer side respectively between generator A 37 and condenser A 36, between generator B 32 and condenser B 33.

[0028] A independent solution concentration low heat pump cycle A is formed by generator A 37, condenser A 36, evaporator A 20, absorber A 21, heat exchanger A 22, solution pump A 19 and refrigerant pump A 18 etc.;A independent solution concentration high heat pump cycle B is formed by generator B 32, condenser B 33, evaporator B 25, absorber B 26, heat exchanger B 27, solution pump B 24 and refrigerant pump B 23 etc..

[0029] The heat pump cycle A and the heat pump cycle B are associated together through the inner circulation medium temperature hot water system 17 and the external system, the high-grade driving heat source is connected in parallel and respectively enters the heat transfer pipe of the generator A 37 through the electric regulating valve A 28 and enters the heat transfer pipe of the generator B 32 through the electric regulating valve B 29, and respectively heats the solution outside the heat transfer pipe of the generator A 37 and the heat transfer pipe of the generator B 32 to make the solution concentrated and produce refrigerant steam, the high-grade driving heat source is discharged after releasing heat; the low-temperature waste heat source enters the heat transfer pipe of the evaporator A 20, heats the refrigerant water outside the pipe to evaporate, and flows out of the unit after releasing heat; the inner circulation medium temperature hot water is pumped into the heat transfer pipe of the absorber A 21 by the inner circulation water pump 16, absorbs the heat absorption of the solution outside the pipe to be heated, and after being heated, the inner circulation medium temperature hot water enters the heat transfer pipe of the evaporator B 25 to be cooled and heated, and then is lifted by the inner circulation water pump 16 to enter the heat transfer pipe of the absorber A 21 to be heated and the heat transfer pipe of the evaporator B to be cooled, forming an inner circulation medium temperature hot water system 17, which is supplied by the external inner circulation water pressure regulating water supply 15. The high-temperature heat source 11 is divided into two paths, one path enters the heat transfer pipe of the condenser A 36 through the high-temperature heat source regulating valve C 14 to absorb the condensation heat, and the other path is connected in series and first enters the heat transfer pipe of the absorber B 26 to absorb the heat absorption of the solution outside the pipe, and then enters the heat transfer pipe of the condenser B 33 to absorb the condensation heat of the refrigerant steam outside the pipe, and the temperature of the high-temperature heat source is increased after absorbing heat, and is combined and flows out of the machine, so that the high-temperature heat source with higher temperature is obtained. The high-temperature heat source regulating valve C 14 is used for adjusting the flow of the high-temperature heat source entering the heat transfer pipe of the condenser A 36, so that the temperature of the high-temperature heat source obtained by the heat pump cycle A and the heat pump cycle B is the same.

[0030] As Figure 3 , the utility model relates to another compact first type lithium bromide absorption heat pump unit for producing high-temperature heat source, which is not provided with a high-temperature heat source regulating valve C and corresponding branch pipe, and the high-temperature heat source 11 is connected in series and sequentially enters the heat transfer pipe of the absorber B 26 to absorb the heat absorption of the solution outside the pipe, then enters the heat transfer pipe of the condenser B 33 to absorb the condensation heat of the refrigerant steam outside the pipe, and finally enters the heat transfer pipe of the condenser A 36 to absorb the condensation heat, and the temperature of the high-temperature heat source is increased after absorbing heat, and flows out of the machine, so that the high-temperature heat source with higher temperature is obtained.

[0031] As Figure 4 , the utility model relates to another compact first type lithium bromide absorption heat pump unit for producing high-temperature heat source, which is not provided with a high-temperature heat source regulating valve C and corresponding branch pipe, and the high-temperature heat source is connected in series and sequentially enters the heat transfer pipe of the condenser A to absorb the condensation heat, then enters the heat transfer pipe of the condenser B to absorb the condensation heat of the refrigerant steam outside the pipe, and finally enters the heat transfer pipe of the absorber B to absorb the heat absorption of the solution outside the pipe, and the temperature of the high-temperature heat source is increased after absorbing heat, and flows out of the machine, so that the high-temperature heat source with higher temperature is obtained.

[0032] The working principles of the heat pump cycle A and the heat pump cycle B are same, and the dilute solution in the absorber is lifted by the solution pump, is heated by the heat exchanger, and is sent into the generator, the dilute solution is heated and concentrated into the concentrated solution by the high quality driving heat source in the heat transfer pipe of the generator, and the cold agent steam is generated, the cold agent steam is condensed into the cold agent water in the condenser, and the latent heat is absorbed and removed by the high temperature heat source in the heat transfer pipe. The cold agent water enters the evaporator after being reduced in pressure by throttling, is lifted by the cold agent pump, is sprayed on the surface of the heat transfer pipe of the evaporator by the liquid distributor, is evaporated into the cold agent steam at low temperature by absorbing the heat of the residual heat in the pipe, and the residual heat is reduced in temperature and flows into the unit. The concentrated solution is reduced in temperature by the heat exchanger, flows into the absorber by itself, is sprayed on the surface of the heat transfer pipe of the absorber by the liquid distributor, and the concentrated solution is changed into the dilute solution after absorbing the cold agent steam generated by the evaporator, and the heat released when the concentrated solution absorbs the cold agent steam is transferred to the high temperature heat source to be prepared.

[0033] The driving heat source can be steam, heat conducting oil or other heat sources, the low temperature residual heat source can be exhaust steam, water or other heat sources, and the high temperature heat source to be prepared can be hot water, chemical materials or the like.

[0034] In addition to the above-mentioned embodiments, the utility model also includes other implementation manners, and the technical solutions formed by equivalent transformation or equivalent replacement should fall into the protection scope of the utility model claims.

Claims

1. A compact lithium bromide absorption heat pump unit of the first type for producing high temperature heat source, comprising a generator A, a condenser A, a generator B, a condenser B, an evaporator A, an absorber A, an evaporator B, an absorber B, a heat exchanger A, a heat exchanger B, a solution pump A, a refrigerant pump A, a solution pump B, a refrigerant pump B and an internal circulating water pump, characterized in that: the evaporator A, the absorber A, the evaporator B and the absorber B are arranged in the same cylinder which is placed in the lower part, the evaporator A and the absorber A are in one low pressure cavity, and the evaporator B and the absorber B are in another low pressure cavity; the generator A, the condenser A, the generator B and the condenser B are arranged in the same cylinder which is placed in the upper part, the generator A and the condenser A are in one high pressure cavity, and the generator B and the condenser B are in another high pressure cavity; the generator A, the condenser A, the evaporator A, the absorber A, the heat exchanger A, the solution pump A and the refrigerant pump A form an independent low concentration solution heat pump cycle A; the generator B, the condenser B, the evaporator B, the absorber B, the heat exchanger B, the solution pump B and the refrigerant pump B form an independent high concentration solution heat pump cycle B; the internal circulating medium temperature hot water forms an internal circulating medium temperature hot water system between the absorber A and the evaporator B through the internal circulating water pump. The two cavities of the lower cylinder are separated by an intermediate partition plate, the absorber A and the evaporator B are adjacent to the intermediate partition plate, and the evaporator A and the absorber B are arranged outside respectively; the two cavities of the upper cylinder are also separated by an intermediate partition plate, the generator A and the generator B are adjacent to the intermediate partition plate, the condenser A and the condenser B are arranged outside respectively, and a liquid blocking plate is arranged between the generator A and the condenser A and between the generator B and the condenser B respectively. The high temperature heat source is divided into two paths, one path enters the condenser A, and the other path enters the absorber B and the condenser B in any order in series, and the two paths of high temperature heat source are combined and flow out of the unit after being heated and raised in temperature. The high temperature heat source enters the condenser A through the high temperature heat source regulating valve C, the flow of the high temperature heat source into the heat transfer pipe of the condenser A is adjusted through the high temperature heat source regulating valve C, and the temperature of the high temperature heat source produced by the heat pump cycle A and the heat pump cycle B is ensured to be the same. The high temperature heat source enters the absorber B, the condenser B and the condenser A in series, and the high temperature heat source flows out of the unit after being heated and raised in temperature. The high temperature heat source enters the condenser A, the condenser B and the absorber B in series, and the high temperature heat source flows out of the unit after being heated and raised in temperature.

2. A compact lithium bromide absorption heat pump unit of the first kind for producing a high temperature heat source according to claim 1, characterized in that: The driving heat source enters the generator A through the electric regulating valve A and enters the generator B through the electric regulating valve B to heat the solution. The low temperature waste heat source enters the heat transfer pipe of the evaporator A, the refrigerant water outside the pipe is evaporated, and the low temperature waste heat source flows out of the unit after releasing heat.

3. A compact first-type lithium bromide absorption heat pump unit for producing a high temperature heat source according to claim 2, characterized in that: The internal circulating medium temperature hot water system is supplied by the external internal circulating water pressure regulating water supply.

4. A compact first-type lithium bromide absorption heat pump unit for producing a high temperature heat source according to claim 3, characterized in that: ​ 5. A compact first-type lithium bromide absorption heat pump unit for producing a high temperature heat source according to claim 2, characterized in that: ​ 6. A compact first-type lithium bromide absorption heat pump unit for producing a high temperature heat source according to claim 2, characterized in that: ​ 7. A compact first-type lithium bromide absorption heat pump unit for producing high temperature heat source according to claim 1 or 3 or 5 or 6, characterized in that: ​ 8. A compact first-type lithium bromide absorption heat pump unit for producing a high temperature heat source according to claim 7, characterized in that: ​ 9. A compact first-type lithium bromide absorption heat pump unit for producing a high temperature heat source according to claim 1, characterized in that: ​

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