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

Abstract

The utility model relates to a 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, recycled low-temperature waste heat source heat is transferred to internal circulation medium-temperature hot water through the evaporator A and the absorber A. 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, so that the absorber B produces a high-temperature heat source. The generator and the condenser adopt independent cylinders, the pressure bearing capacity and the thermal displacement capacity of the unit are improved, the generating pressure and the condensing temperature are increased, and a high-temperature heat source can be produced. The unit expands the application field, realizes single-machine ultra-large type, reduces the total investment, and improves the comprehensive utilization rate of energy.

Description

TECHNICAL FIELD

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

[0002] The conventional first kind lithium bromide absorption heat pump unit (such as Figure 1 ), is using a small amount of high temperature heat source as driving heat source, recycles and utilizes the low temperature waste heat in production process, prepares out medium temperature heat source, is used 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 that it prepares out generally highest does not exceed 95 DEG C, 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. UTILITARIAN CONTENT

[0003] The utility model discloses a first kind lithium bromide absorption heat pump unit of high temperature heat source preparation of recycling low temperature waste heat, saving high quality energy, can satisfy the place demand of heat source temperature greater than 95 DEG C, expands heat pump technology application field, reduces the investment.

[0004] The utility model discloses a first kind lithium bromide absorption heat pump unit of high temperature heat source preparation of recycling low temperature waste heat, saving high quality energy, can satisfy the place demand of heat source temperature greater than 95 DEG C, expands heat pump technology application field, reduces the investment.

[0005] A first kind 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, and the generator A, condenser A, evaporator A, absorber A, heat exchanger A, solution pump A and refrigerant pump A form a independent heat pump circulation A of low solution concentration;

[0006] The generator B, condenser B, evaporator B, absorber B, heat exchanger B, solution pump B and refrigerant pump B form a independent heat pump circulation B of high solution concentration;

[0007] The inner circulating medium temperature hot water forms the inner circulating medium temperature hot water system between absorber A and evaporator B through the inner circulating water pump;

[0008] The evaporator A and absorber A are arranged in the same lowest pressure cylinder body, the generator A and condenser A are arranged in two independent equal-height pressure cylinder bodies respectively and are arranged on the upper portion of the lowest pressure cylinder body in parallel;

[0009] The evaporator B and the absorber B are arranged in the same medium-low pressure cylinder, the generator B and the condenser B are arranged in two independent high pressure cylinders respectively and are arranged on the upper part of the medium-low pressure cylinder in parallel, and the lowest pressure cylinder is arranged in parallel with the medium-low pressure cylinder.

[0010] Preferably, 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 warmed up.

[0011] 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 obtained by the heat pump cycle A and the heat pump cycle B is ensured to be the same.

[0012] Preferably, the high temperature heat source enters the absorber B, the condenser B and the condenser A in series in turn, and the high temperature heat source flows out of the unit after being heated and warmed up.

[0013] Preferably, the high temperature heat source enters the condenser A, the condenser B and the absorber B in series in turn, and the high temperature heat source flows out of the unit after being heated and warmed up.

[0014] Preferably, the driving heat source is connected in parallel and enters the generator A through the electric adjusting valve A and enters the generator B through the electric adjusting valve B to heat the solution.

[0015] Preferably, the low temperature waste heat source enters the heat transfer pipe of the evaporator A, heats the coolant water outside the pipe to evaporate, and the low temperature waste heat source flows out of the unit after releasing heat.

[0016] Preferably, the internal circulation medium temperature hot water system is supplied by external internal circulation water pressure maintaining water supply.

[0017] Preferably, the evaporator A and the absorber A are arranged left, middle and right, the evaporator A is in the middle, the absorber A is on both sides, and they are separated by a liquid baffle group.

[0018] The evaporator B and the absorber B are arranged left, middle and right, the evaporator B is in the middle, the absorber B is on both sides, and they are separated by a liquid baffle group.

[0019] Preferably, the top of the generator A cylinder is provided with a steam drum A, and the steam drum A is connected with the top of the condenser A cylinder through a plurality of coolant steam pipelines A.

[0020] The top of the generator B cylinder is provided with a steam drum B, and the steam drum B is connected with the top of the condenser B cylinder through a plurality of coolant steam pipelines B.

[0021] The utility model discloses the beneficial effect is:

[0022] The utility model discloses a first type lithium bromide absorption heat pump unit of high temperature heat source is prepared, through above -mentioned brand -new flow and structure arrangement mode, make unit extension application field, realize single machine super -large, reduce total investment. Generator, condenser adopt independent cylinder, and unit pressure -bearing and heat displacement ability promote, adapt high temperature high pressure condition, and generator is driven under high -quality driving heat source, and the concentration of generator concentrated solution is certain, and the temperature and the generating pressure of concentrated solution promote, and the temperature of produced refrigerant steam improves, and the condensation temperature of condenser improves along with it, and the temperature of high temperature heat source absorbs high temperature refrigerant steam's condensation heat and improves greatly, just can make high temperature heat source, evaporator A and absorber A transfer the heat quantity of recovered low temperature waste heat to the internal circulation medium temperature hot water, make internal circulation medium temperature hot water temperature rise and enter evaporator B after, and the evaporation temperature of evaporator B improves greatly, and the absorption pressure improves along with it, and the absorption heat of absorber B's solution improves greatly, just make the temperature of high temperature heat source in absorber B heat transfer pipe and improve greatly, and the high temperature heat source above 95 DEG C that conventional unit cannot prepare is prepared. For example: when driving steam pressure 0.8~1.0MPa.G, waste heat source temperature 50 DEG C, can make high temperature heat source from 105 DEG C and heat to 115 DEG C, and the performance coefficient is above 1.32, and the case is applied in the process production, can recover low temperature waste heat, and save high -quality driving heat source consumption. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the structural schematic diagram of a first type lithium bromide absorption heat pump unit of conventional.

[0024] Figure 2 The structural schematic diagram of a first type lithium bromide absorption heat pump unit of high temperature heat source of the utility model.

[0025] Figure 3 The structural schematic diagram of another first type lithium bromide absorption heat pump unit of high temperature heat source of the utility model.

[0026] Figure 4 The structural schematic diagram of another first type lithium bromide absorption heat pump unit of high temperature heat source of the utility model.

[0027] 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 C 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, steam drum B 30, refrigerant steam pipeline B 31, generator B 32, condenser B 33, steam drum A 34, refrigerant steam pipeline A 35, condenser A 36, generator A 37. DETAILED DESCRIPTION

[0028] Referring to Figure 2 The utility model relates to a kind of first lithium bromide absorption heat pump unit of high-temperature heat source preparation, including 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 and absorber A 21 are arranged in the same lowest pressure cylinder body, left middle right arrangement, evaporator A 20 is in the middle, absorber A 21 is on both sides, they are separated by liquid baffle group, place in lower part;Generator A 37 and condenser A 36 are respectively in two independent equal high pressure cylinder body, and place side by side, generator A 37 cylinder top is equipped with steam drum A 34, steam drum A 34 is connected with condenser A 36 cylinder top by multiple refrigerant steam pipeline A 35, places in evaporator A 20 and absorber A 21 cylinder upper portion.Evaporator B 25 and absorber B 26 are arranged in the same medium-low pressure cylinder body, left middle right arrangement, evaporator B 25 is in the middle, absorber B 26 is on both sides, they are separated by liquid baffle group, place in lower part;Generator B 32 and condenser B 33 are respectively in two independent equal high pressure cylinder body, and place side by side, generator B 32 cylinder top is equipped with steam drum B 30, steam drum B 30 is connected with condenser B 33 cylinder top by multiple refrigerant steam pipeline B 31, places in evaporator B 25 and absorber B 26 cylinder upper portion.

[0029] A37, condenser A36, evaporator A20, absorber A21, heat exchanger A22, solution pump A19 and refrigerant pump A18, etc. form a low-concentration solution heat pump cycle A; generator B32, condenser B33, evaporator B25, absorber B26, heat exchanger B27, solution pump B24 and refrigerant pump B23, etc. form a high-concentration solution heat pump cycle B. The heat pump cycle A and the heat pump cycle B are placed side by side.

[0030] The heat pump cycle A and the heat pump cycle B are associated together through the internal circulation medium-temperature hot water system 17 and the external system, and the high-grade driving heat source is connected in parallel and enters the heat transfer pipe of the generator A37 through the electric regulating valve A28 and enters the heat transfer pipe of the generator B32 through the electric regulating valve B29, and respectively heats the solution outside the heat transfer pipe of the generator A37 and the heat transfer pipe of the generator B32 to make it concentrated and produce refrigerant steam, and 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 A20 through the low-temperature waste heat source inlet 10, and evaporates the refrigerant water outside the pipe, and the low-temperature waste heat source is discharged after releasing heat through the low-temperature waste heat source outlet 9; the internal circulation medium-temperature hot water is pumped into the heat transfer pipe of the absorber A21 by the internal circulation water pump 16, absorbs the heat of the solution outside the pipe to heat up, and the internal circulation medium-temperature hot water after heating up enters the heat transfer pipe of the evaporator B25 to release heat and cool down, and then is lifted by the internal circulation water pump 16 to continue to enter the heat transfer pipe of the absorber A21 to heat up and the heat transfer pipe of the evaporator B to cool down, forming an internal circulation medium-temperature hot water system 17, which is supplied by the external internal circulation water pressure-keeping water supply 15. The high-temperature heat source is divided into two paths, one path enters the heat transfer pipe of the condenser A36 through the high-temperature heat source regulating valve C14 to absorb the condensation heat, and the other path is connected in series to first enter the heat transfer pipe of the absorber B26 to absorb the heat of the solution outside the pipe, and then enter the heat transfer pipe of the condenser B33 to absorb the condensation heat of the refrigerant steam outside the pipe (or the other path is connected in series to first enter the heat transfer pipe of the condenser B33 to absorb the condensation heat of the refrigerant steam outside the pipe, and then enter the heat transfer pipe of the absorber B26 to absorb the heat of the solution outside the pipe), and the high-temperature heat source is heated to increase the temperature, and is combined together to flow out of the machine through the high-temperature heat source outlet 8, so as to obtain high-temperature heat source with higher temperature. The high-temperature heat source regulating valve C14 is used to adjust the flow of the high-temperature heat source entering the heat transfer pipe of the condenser A36, so as to ensure that the high-temperature heat sources produced by the heat pump cycle A and the heat pump cycle B have the same temperature.

[0031] As Figure 3The utility model relates to another kind of first class lithium bromide absorption heat pump unit of high temperature heat source, cancel high temperature heat source regulating valve C and corresponding branch pipeline, high temperature heat source is connected in series in turn first into the absorption heat of solution outside the absorption tube in the heat transfer pipe of absorber B26, again into the condensation heat of refrigerant steam outside the absorption tube in the heat transfer pipe of condenser B33, last into the absorption condensation heat in the heat transfer pipe of condenser A36, and high temperature heat source flows out after the temperature of heat absorption increases, thereby obtains higher temperature high temperature heat source.

[0032] As Figure 4 The utility model relates to another kind of first class lithium bromide absorption heat pump unit of high temperature heat source, cancel high temperature heat source regulating valve C and corresponding branch pipeline, high temperature heat source is connected in series in turn first into the absorption heat of solution outside the absorption tube in the heat transfer pipe of absorber B26, again into the condensation heat of refrigerant steam outside the absorption tube in the heat transfer pipe of condenser B33, last into the absorption condensation heat in the heat transfer pipe of condenser A36, and high temperature heat source flows out after the temperature of heat absorption increases, thereby obtains higher temperature high temperature heat source.

[0033] The working principle of heat pump cycle A and heat pump cycle B is same, and all are by solution pump to promote the dilute solution in absorber to be sent into generator by heat exchanger temperature rise, by the high-quality driving heat source in generator heat transfer pipe to heat it and concentrate into concentrated solution, and simultaneously produce refrigerant steam, and the refrigerant steam is condensed into refrigerant water in condenser, and the latent heat is absorbed by high temperature heat source in heat transfer pipe.The refrigerant water enters evaporator after throttling pressure reduction, and is lifted by refrigerant pump and is sprinkled on the surface of evaporator heat transfer pipe by liquid distributor, and the refrigerant water absorbs the heat of the residual heat in the tube, and the residual heat temperature reduces and flows out of the unit.The concentrated solution is lowered in temperature by heat exchanger by pressure difference and height difference and flows into the absorber, and is sprinkled on the surface of absorber heat transfer pipe by liquid distributor, and the concentrated solution is changed into dilute solution after absorbing the refrigerant steam generated by evaporator, and the heat released when absorbing the refrigerant steam is transferred to the high temperature heat source to be prepared.

[0034] Driving heat source can be steam, heat conducting oil or other heat source, low temperature residual heat source can be steam, water or other heat source, and the high temperature heat source to be prepared can be hot water, chemical materials and the like.

[0035] 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 within the protection scope of the utility model claims.

Claims

1. A first type of lithium bromide absorption heat pump unit 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: a low concentration solution heat pump cycle A is composed of 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; a high concentration solution heat pump cycle B is composed of 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; an internal circulating medium temperature hot water system is formed between the absorber A and the evaporator B by the internal circulating water pump in the internal circulation; the evaporator A and the absorber A are arranged in the same lowest pressure cylinder, the generator A and the condenser A are arranged in two independent equal pressure cylinders respectively and are arranged in parallel on the upper part of the lowest pressure cylinder; the evaporator B and the absorber B are arranged in the same medium-low pressure cylinder, the generator B and the condenser B are arranged in two independent equal pressure cylinders respectively and are arranged in parallel on the upper part of the medium-low pressure cylinder, and the lowest pressure cylinder and the medium-low pressure cylinder are arranged in parallel; 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 in turn, 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 in turn, and the high temperature heat source flows out of the unit after being heated and raised in temperature; 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 in parallel to heat the solution; the low temperature waste heat source enters the heat transfer pipe of the evaporator A20, the refrigerant water outside the pipe is evaporated, and the low temperature waste heat source flows out of the unit after releasing heat; the internal circulating medium temperature hot water system is supplied by the external internal circulating water pressure maintaining water supply; the evaporator A and the absorber A are arranged left, middle and right, the evaporator A is in the middle, the absorber A is on both sides, and they are separated by a liquid baffle group; the evaporator B and the absorber B are arranged left, middle and right, the evaporator B is in the middle, the absorber B is on both sides, and they are separated by a liquid baffle group; the generator A cylinder top is provided with a steam drum A, and the steam drum A is connected with the condenser A cylinder top through a plurality of refrigerant steam pipelines A; the generator B cylinder top is provided with a steam drum B, and the steam drum B is connected with the condenser B cylinder top through a plurality of refrigerant steam pipelines B. ​ ​ ​ ​ ​ 2. A lithium bromide absorption heat pump unit of the first kind for producing a high temperature heat source according to claim 1, characterized in that: ​ 3. A lithium bromide absorption heat pump unit of the first kind for producing a high temperature heat source according to claim 2, characterized in that: ​ 4. A lithium bromide absorption heat pump unit of the first kind for producing a high temperature heat source according to claim 1, characterized in that: ​ 5. A lithium bromide absorption heat pump unit of the first kind for producing a high temperature heat source according to claim 1, characterized in that: ​ 6. A first type of lithium bromide absorption heat pump unit for producing a high temperature heat source according to claim 1 or 2 or 4 or 5, characterized in that: ​ 7. A lithium bromide absorption heat pump unit of the first kind for producing a high temperature heat source according to claim 6, characterized in that: ​ 8. A lithium bromide absorption heat pump unit of the first kind for producing a high temperature heat source according to claim 1, characterized in that: ​ 9. A lithium bromide absorption heat pump unit of the first kind for producing a high temperature heat source according to claim 1, characterized in that: ​ ​ 10. A lithium bromide absorption heat pump unit of the first kind for producing a high temperature heat source according to claim 1, characterized in that: ​ ​

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