Absorption type refrigerating unit using composite energy

Abstract

The utility model belongs to the technical field of heat exchange equipment, and discloses an absorption type refrigerating unit using composite energy, which is simultaneously provided with a regenerator A and a regenerator B and is used for recovering different types of waste heat resources, so that the problems of high equipment investment and poor economical efficiency when the different types of waste heat resources are recovered are solved. The condenser, the regenerator A and the regenerator B are arranged in the same cylinder, the regenerator A and the regenerator B are arranged left and right, the condenser is arranged on the upper portions of the regenerator A and the regenerator B, liquid drops carried by refrigerant steam are effectively separated, refrigerant pollution is completely eradicated, the flow of a dilute solution is distributed in a balanced mode through the solution adjusting valve A and the solution adjusting valve B, and therefore the flow rate of the dilute solution is increased. The flow of heat sources entering the regenerator A and the regenerator B is adjusted through the heat source control valve A and the heat source control valve B, stable and efficient operation of the unit is achieved, independent use or simultaneous use of the heat sources is achieved through switching of the solution adjusting valve A and the solution adjusting valve B, and the cold using process requirements of users are met.

Description

TECHNICAL FIELD

[0001] The utility model belongs to heat exchange equipment technical field, the utility model relates to a kind of absorption refrigerating unit using composite energy.It is mainly applied to industrial waste heat recovery field. BACKGROUND

[0002] With the steady development of China's industry, industrial heat demand increases year by year, although energy-saving measures are introduced in the process of industrial production, a large amount of waste heat is discharged in the form of waste gas and waste water, only about 30% of the heat energy is reused, not only the overall energy utilization efficiency is low, greenhouse gas emissions is large, but also the energy consumption cost of enterprise is high, based on the present situation of industrial energy consumption, there are a large amount of waste heat resources of different temperatures in many industrial fields, if not utilized, it will cause waste of resources, using lithium bromide absorption refrigeration technology, this part of waste heat can be recycled and utilized to realize waste heat refrigeration, however, different temperature waste heat resources need to use multiple units to recover heat, equipment investment is high, and economic efficiency is poor, how to realize efficient recycling of waste heat resources of different temperatures becomes an important issue for energy saving and emission reduction in industrial field. SUMMARY

[0003] The utility model aims at overcoming the insufficient in the prior art, and provides an absorption refrigerating unit using composite energy, which can better utilize waste heat resources and avoid energy waste.

[0004] The utility model discloses a kind of absorption refrigerating unit using composite energy, including absorber, evaporator, condenser, regenerator A, regenerator B, heat exchanger, dilute solution pump, concentrated solution pump, refrigerant pump, wherein evaporator connects cold water inlet pipeline and cold water outlet pipeline;Absorber connects cooling water inlet pipeline, condenser connects cooling water outlet pipeline, and absorber and condenser are connected by cooling water intermediate pipeline;Condenser, regenerator A, regenerator B are arranged in the same cylinder, regenerator A and regenerator B are arranged left and right, condenser is arranged in the upper portion of regenerator A and regenerator B, regenerator A connects heat source inlet pipeline A and heat source outlet pipeline A, and regenerator B connects heat source inlet pipeline B and heat source outlet pipeline B;Absorber and evaporator are arranged in a cylinder;Dilute solution pipeline A is connected between absorber and heat exchanger, dilute solution pump is arranged on dilute solution pipeline A, and dilute solution pipeline B connected to the outlet of heat exchanger is connected to regenerator A and regenerator B by dilute solution pipeline C and dilute solution pipeline D respectively, and the lower cylinder of regenerator A and regenerator B is connected to heat exchanger by concentrated solution pipeline A, concentrated solution pump is arranged on concentrated solution pipeline A, and concentrated solution pipeline B is connected between heat exchanger and absorber;Refrigerant water recirculation pipeline is arranged on evaporator, and refrigerant water pipeline is connected between condenser and evaporator.

[0005] The heat source inlet pipeline A is provided with a heat source control valve A, and the heat source inlet pipeline B is provided with a heat source control valve B.

[0006] The dilute solution pipeline C is provided with a solution adjusting valve A, and the dilute solution pipeline D is provided with a solution adjusting valve B.

[0007] The heat source is industrial waste heat resources such as hot water, low-pressure steam, heat-conducting oil and ammonia water.

[0008] Compared with the prior art, the utility model has the beneficial effects that:

[0009] 1. The absorption refrigeration unit using composite energy sources is provided with a regenerator A and a regenerator B, different kinds of heat sources are respectively introduced into the regenerator A and the regenerator B, heat recovery is carried out, different kinds of waste heat resources are recovered simultaneously by one unit, energy waste is avoided, and the problems of high equipment investment and large equipment space in heat recovery of waste heat resources with different temperatures are solved.

[0010] 2. The condenser, the regenerator A and the regenerator B are arranged in the same cylinder, the regenerator A and the regenerator B are arranged left and right, the condenser is arranged at the upper part of the regenerator A and the regenerator B, liquid drops carried by refrigerant steam are effectively separated, refrigerant pollution is prevented, the heat source flow into the regenerator A and the regenerator B is adjusted through the heat source control valve A and the heat source control valve B, and stable and efficient operation of the unit is realized.

[0011] 3. The solution adjusting valve A and the solution adjusting valve B with flow regulation and shut-off functions are arranged, the flow of the dilute solution into the regenerator A and the regenerator B can be evenly distributed, when one heat source system needs to be overhauled, the other heat source can be used alone through the cut-off conversion of the solution adjusting valve A or the solution adjusting valve B, and the cold process demand of the user is ensured. DRAWINGS

[0012] The utility model will be further described in connection with the drawings and examples:

[0013] Figure 1 It is a structure schematic view of the absorption refrigeration unit using composite energy sources.

[0014] 1 - absorber, 2 - evaporator, 3 - condenser, 4 - regenerator A, 5 - regenerator B, 6 - heat exchanger, 7 - dilute solution pump, 8 - concentrated solution pump, 9 - refrigerant pump, 10 - cold water inlet line, 11 - cold water outlet line, 12 - cooling water inlet line, 13 - cooling water intermediate line, 14 - cooling water outlet line, 15 - heat source inlet line A, 16 - heat source outlet line A, 17 - heat source inlet line B, 18 - heat source outlet line B, 19 - dilute solution line A, 20 - dilute solution line B, 21 - dilute solution line C, 22 - dilute solution line D, 23 - concentrated solution line A, 24 - concentrated solution line B, 25 - refrigerant water recirculation line, 26 - refrigerant water line, 27 - heat source control valve A, 28 - heat source control valve B, 29 - solution regulating valve A, 30 - solution regulating valve B. DETAILED DESCRIPTION

[0015] The present application is further described in connection with the accompanying drawings, in which:

[0016] Example 1

[0017] An absorption chiller unit using composite energy sources, such as Figure 1As shown, including absorber 1, evaporator 2, condenser 3, regenerator A 4, regenerator B 5, heat exchanger 6, dilute solution pump 7, concentrated solution pump 8, refrigerant pump 9, wherein the evaporator 2 is connected with cold water inlet line 10 and cold water outlet line 11; absorber 1 is connected with cooling water inlet line 12, condenser 3 is connected with cooling water outlet line 14, and absorber 1 and condenser 3 are connected through cooling water intermediate line 13; condenser 3, regenerator A 4, regenerator B 5 are arranged in the same cylinder, regenerator A 4 and regenerator B 5 are arranged left and right, condenser 3 is arranged in the upper part of regenerator A 4 and regenerator B 5, regenerator A 4 is connected with heat source inlet line A 15 and heat source outlet line A 16, regenerator B 5 is connected with heat source inlet line B 17 and heat source outlet line B 18; absorber 1 and evaporator 2 are arranged in a cylinder; dilute solution line A 19 is connected between absorber 1 and heat exchanger 6, dilute solution pump 7 is arranged on dilute solution line A 19, and heat exchanger 6 outlet is connected with dilute solution line B 20; dilute solution line B 20 is connected with regenerator A 4 and regenerator B 5 through dilute solution line C 21 and dilute solution line D 22 respectively, lower cylinder of regenerator A 4 and regenerator B 5 is connected with heat exchanger 6 through concentrated solution line A 23, concentrated solution pump 8 is arranged on concentrated solution line A 23, and heat exchanger 6 and absorber 1 are connected through concentrated solution line B 24; evaporator 2 is connected with refrigerant water recirculation line 25, and refrigerant pump 9, refrigerant water recirculation line 25 and evaporator 2 top are sequentially connected in order from bottom to top of evaporator 2; condenser 3 and evaporator 2 are connected through refrigerant water line 26. Absorber 1, dilute solution pump 7, heat exchanger 6, regenerator A 4, regenerator B 5, concentrated solution pump 8, heat exchanger 6, absorber 1 are sequentially connected in order to form a solution circulating mechanism, refrigerant pump 9 is connected with evaporator 2, evaporator 2, condenser 3, refrigerant pump 9 and connecting line form refrigerant water circulation, dilute solution from absorber 1 is sent into regenerator A 4 and regenerator B 5 after heat exchange through heat exchanger 6 to increase temperature and form concentrated solution, concentrated solution is lowered in temperature after heat exchange through heat exchanger 6 by concentrated solution pump 8, and is returned to absorber 1 through concentrated solution line B 24 to drip on cooling water pipe to absorb refrigerant steam from evaporator 2 to form dilute solution, while refrigerant in condenser 3 enters evaporator 2 through refrigerant water line 26, refrigerant in evaporator 2 is transported to upper part of evaporator 2 through refrigerant water recirculation line 25 and refrigerant pump 9 to distribute refrigerant, refrigerant evaporates to produce refrigerant steam into absorber 1, refrigerant water drips on cold water pipe of evaporator 2 to cool cold water entering evaporator 2 to realize refrigeration.

[0018] Heat source control valve A 27 is arranged on heat source inlet line A 15, heat source control valve B 28 is arranged on heat source inlet line B 17, and heat source control valve A 27 and heat source control valve B 28 are respectively used for adjusting heat source flow into regenerator A 4 and regenerator B 5 to realize stable and efficient operation of the unit.

[0019] The dilute solution pipeline C21 is provided with a solution regulating valve A29, and the dilute solution pipeline D22 is provided with a solution regulating valve B30; the solution regulating valve A29 and the solution regulating valve B30 simultaneously have the functions of flow regulating and shutting off; the solution regulating valve A29 and the solution regulating valve B30 are respectively used for regulating the flow of the dilute solution into the regenerators A4 and B5; when one heat source system needs to be overhauled, the other heat source can be used alone by switching off the solution regulating valve A29 or the solution regulating valve B30, thereby guaranteeing the user's cold process demand.

[0020] The heat sources in the regenerators A4 and B5 include hot water, low-pressure steam or heat conducting oil; the types of the heat sources used are the same or different, and can be flexibly applied; one unit can simultaneously recover waste heat resources of different temperatures, thereby avoiding the waste of energy and greatly reducing the investment cost, size and weight of the unit.

[0021] Although the present application has been described in detail above with general description and specific embodiments, some modifications or improvements can be made on the basis of the present application, which is obvious to those skilled in the art. Therefore, these modifications or improvements made on the basis of not deviating from the spirit of the present application all belong to the scope of protection required by the present application.

Claims

1. An absorption chiller unit using a composite energy source, characterized by: The application relates to a heat pump system, which comprises an absorber (1), an evaporator (2), a condenser (3), a regenerator A (4), a regenerator B (5), a heat exchanger (6), a dilute solution pump (7), a concentrated solution pump (8), a refrigerant pump (9), wherein the evaporator (2) is connected with a cold water inlet pipeline (10) and a cold water outlet pipeline (11); the absorber (1) is connected with a cooling water inlet pipeline (12), the condenser (3) is connected with a cooling water outlet pipeline (14), and the absorber (1) and the condenser (3) are connected through a cooling water intermediate pipeline (13); the condenser (3), the regenerator A (4) and the regenerator B (5) are arranged in the same cylinder body, the regenerator A (4) and the regenerator B (5) are arranged on the left and right sides, the condenser (3) is arranged on the upper part of the regenerator A (4) and the regenerator B (5), the regenerator A (4) is connected with a heat source inlet pipeline A (15) and a heat source outlet pipeline A (16), the regenerator B (5) is connected with a heat source inlet pipeline B (17) and a heat source outlet pipeline B (18); the absorber (1) and the evaporator (2) are arranged in a cylinder body; a dilute solution pipeline A (19) is connected between the absorber (1) and the heat exchanger (6), the dilute solution pump (7) is arranged on the dilute solution pipeline A (19), and the outlet of the heat exchanger (6) is connected with a dilute solution pipeline B (20); the dilute solution pipeline B (20) is connected with the regenerator A (4) and the regenerator B (5) through a dilute solution pipeline C (21) and a dilute solution pipeline D (22) respectively, the lower cylinder body of the regenerator A (4) and the regenerator B (5) is connected with the heat exchanger (6) through a concentrated solution pipeline A (23), the concentrated solution pump (8) is arranged on the concentrated solution pipeline A (23), and the heat exchanger (6) and the absorber (1) are connected through a concentrated solution pipeline B (24); the evaporator (2) is connected with a refrigerant water recirculation pipeline (25), and the condenser (3) and the evaporator (2) are connected through a refrigerant water pipeline (26).

2. An absorption chiller unit using a composite energy source as claimed in claim 1, wherein: The heat source inlet pipeline A (15) is provided with a heat source control valve A (27), and the heat source inlet pipeline B (17) is provided with a heat source control valve B (28).

3. The absorption chiller unit using a compound energy source according to claim 1, characterized in that: The dilute solution pipeline C (21) is provided with a solution adjusting valve A (29), and the dilute solution pipeline D (22) is provided with a solution adjusting valve B (30).

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