Constant-temperature energy-saving system of pig slaughtering assembly line scalding pool

Abstract

The utility model discloses a constant-temperature energy-saving system of a pig slaughtering assembly line scalding pool. The constant-temperature energy-saving system comprises a first heat pump, a second heat pump and an external pipe fitting which are connected in sequence. Through the newly added valley electricity energy storage device, the valley electricity energy storage device is used for storing heat energy in the valley electricity period, replaces the first heat pump to provide a heat source for the second heat pump in the peak electricity period, and can also directly output the heat source. The effects of providing a stable heat source for the second heat pump and saving the electric charge cost can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat pumps, in particular to a constant temperature energy-saving system for a scalding pool in a pig slaughtering production line. Background Art

[0002] In the pig slaughtering line, pigs must be scalded in a scalding pool to facilitate the subsequent depilation process. In the prior art, a boiler is usually used to produce high-temperature steam to heat the water in the scalding pool, but the energy consumption of the boiler to produce steam is high, and the high-temperature steam produced by the boiler is difficult to control within a stable temperature range.

[0003] A heat pump is a highly efficient energy-saving device that makes full use of low-grade thermal energy. It absorbs low-grade thermal energy through the evaporator, releases the heat energy at the condenser after being compressed by the compressor, and then returns to the evaporator through the expansion valve for the next cycle. In other words, a heat pump can output a large amount of heat energy relying solely on electricity. Therefore, how to further save electricity will help save energy and protect the environment. Utility Model Content

[0004] In view of the above technical problems, the embodiment of the utility model provides a constant temperature energy-saving system for a scalding tank of a pig slaughtering assembly line to solve the problems raised in the above background technology.

[0005] The utility model provides the following technical solutions:

[0006] A constant temperature energy-saving system for a scalding pool of a pig slaughtering assembly line, comprising a first heat pump, a second heat pump and an external pipe connected in sequence, wherein a heating medium output end of the first heat pump is connected to a heating medium input end of the second heat pump, a heating medium output end of the second heat pump is connected to a heating medium output pipe of the external pipe, a cooling medium input end of the second heat pump is connected to a cooling medium input pipe of the external pipe, and further comprising a valley power storage device;

[0007] The heating working medium input end of the valley power energy storage device is connected to the cooling working medium output end of the second heat pump, the heating working medium output end of the valley power energy storage device is connected to the cooling working medium input end of the second heat pump, and the cooling working medium output end of the valley power energy storage device is connected to the cooling working medium input end of the first heat pump.

[0008] Preferably, the valley electricity energy storage device includes a first heat exchanger and a phase change energy storage device, the heating working fluid input end of the first heat exchanger is connected to the cooling working fluid output end of the second heat pump, the cooling working fluid output end of the first heat exchanger is connected to the cooling working fluid input end of the first heat pump, and the heating working fluid output end of the first heat exchanger and the cooling working fluid input end of the first heat exchanger are connected to the phase change energy storage device to form a working fluid circulation loop.

[0009] Preferably, the valley electricity energy storage device also includes a second heat exchanger, the heating working fluid output end of the second heat exchanger is connected to the cooling working fluid input end of the second heat pump, and the heating working fluid input end of the second heat exchanger and the cooling working fluid output end of the second heat exchanger are connected to the phase change energy storage device to form a working fluid circulation loop.

[0010] Preferably, the cooling medium input end of the second heat exchanger is connected to the cooling medium input pipe of the external pipe.

[0011] Preferably, the external pipe is provided with a hydraulic balancer, the heating medium output pipe is connected to the heating medium output pipe of the second heat pump through the hydraulic balancer, and the cooling medium input pipe is connected to the cooling medium input end of the valley power storage device through the hydraulic balancer.

[0012] Preferably, a buffer water tank is also included, and the heating medium output end of the first heat pump is connected to the heating medium input end of the second heat pump through the buffer water tank, and the cooling medium output end of the second heat pump is connected to the heating medium input end of the valley power storage device through the buffer water tank.

[0013] Preferably, the first heat pump is an air source heat pump.

[0014] The constant temperature energy-saving system for the scalding pool of a pig slaughtering line provided by the utility model has the following beneficial effects:

[0015] (1) Outputting high-temperature heat energy to the outside through two-stage compression of the first heat pump and the second heat pump;

[0016] (2) the first heat pump directly outputs heat energy to the outside by exchanging heat with the valley power storage device;

[0017] (3) During the valley power period, the first heat pump transmits heat energy to the valley power energy storage device for storage, and the stored heat energy replaces the first heat pump to provide heat energy for the second heat pump during the peak power period or directly outputs heat energy to the outside;

[0018] (4) The valley power storage device can work simultaneously with the first heat pump during peak power periods to deliver heat energy to the second heat pump, thereby reducing the energy consumption of the first heat pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure numerals: 1. first heat pump; 2. second heat pump; 3. external pipe fittings; 301. heating medium output pipe; 302. cooling medium input pipe; 4. valley power storage device; 401. first heat exchanger; 402. phase change energy storage device; 403. second heat exchanger; 5. hydraulic balancer; 6. buffer water tank. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1 A constant temperature and energy-saving system for a scalding pool in a pig slaughtering assembly line comprises a first heat pump 1, a second heat pump 2 and an external pipe fitting 3 which are connected in sequence, the heating medium output end of the first heat pump 1 being connected to the heating medium input end of the second heat pump 2, the heating medium output end of the second heat pump 2 being connected to a heating medium output pipe 301 of the external pipe fitting 3, the cooling medium input end of the second heat pump 2 being connected to a cooling medium input pipe 302 of the external pipe fitting 3, the heat energy is absorbed by the first heat pump 1 and then compressed and heated up and then sent to the working medium in the second heat pump 2 for further compression and heating up, and then sent to the working medium in the external pipe fitting 3, the working medium which is absorbed and heated up after secondary compression is output from the heating medium output pipe 301 to the outside for heat supply.

[0023] It also includes a valley electricity storage device 4, the heating medium input end of the valley electricity storage device 4 is connected to the cooling medium output end of the second heat pump 2, and the heating medium output end of the valley electricity storage device 4 is connected to the cooling medium input end of the second heat pump 2. When the second heat pump 2 does not start heat exchange, the heating medium enters the valley electricity storage device 4 through the second heat pump for heat exchange, and the valley electricity storage device 4 sends heat energy to the cooling medium input end of the second heat pump 2 through the heating medium output end, and enters the heating medium output pipe 301 from the heating medium output end of the second heat pump 2 to supply heat to the outside.

[0024] The cooling medium output end of the valley electricity energy storage device 4 is connected to the cooling medium input end of the first heat pump 1 , so that a working medium circulation loop is formed between the first heat pump 1 , the second heat pump 2 and the valley electricity energy storage device 4 .

[0025] The valley electricity energy storage device 4 includes a first heat exchanger 401 and a phase change energy storage device 402. The heating working fluid input end of the first heat exchanger 401 is connected to the cooling working fluid output end of the second heat pump 2, and the cooling working fluid output end of the first heat exchanger 401 is connected to the cooling working fluid input end of the first heat pump 1. Its working fluid circulation loop is: the heating working fluid output end of the first heat pump 1-the heating working fluid input end of the second heat pump 2-the cooling working fluid output end of the second heat pump 2-the heating working fluid input end of the first heat exchanger 401-the cooling working fluid output end of the first heat exchanger 401-the cooling working fluid input end of the first heat pump 1.

[0026] The heating working medium output end of the first heat exchanger 401 and the cooling working medium input end of the first heat exchanger 401 are connected to the phase change energy storage device 402 to form a working medium circulation loop, which is used to transport the heat energy from the first heat exchanger 401 to the phase change energy storage device 402, or to transport the heat energy of the phase change energy storage device 402 back to the first heat exchanger 401.

[0027] The valley power storage device 4 also includes a second heat exchanger 403 , the heating medium output end of the second heat exchanger 403 is connected to the cooling medium input end of the second heat pump 2 , so that the heat energy of the valley power storage device 4 can be output to the outside for heat supply through the heating medium output end of the second heat pump 2 .

[0028] The heating medium input end of the second heat exchanger 403 and the cooling medium output end of the second heat exchanger 403 are connected to the phase change energy storage device 402 to form a medium circulation loop for transferring the heat energy of the phase change energy storage device 402 to the second heat exchanger 403 .

[0029] The cooling medium input end of the second heat exchanger 403 is connected to the cooling medium input pipe 302 of the external pipe fitting 3, so that a pipeline is connected between the valley power energy storage device 4 and the second heat pump 2. It can absorb and output the heat energy sent to the valley power energy storage device 4 by the first heat pump 1, and can also absorb and output the high-temperature heat energy after the two-stage compression of the second heat pump 2.

[0030] The external pipe fitting 3 is provided with a hydraulic balancer 5, the heating medium output pipe 301 is connected to the heating medium output end of the second heat pump 2 through the hydraulic balancer 5, and the cooling medium input pipe 302 is connected to the cooling medium input end of the valley power storage device 4 through the hydraulic balancer 5, for balancing the flow of the medium.

[0031] It also includes a buffer water tank 6. The heating medium output end of the first heat pump 1 is connected to the heating medium input end of the second heat pump 2 through the buffer water tank 6. The cooling medium output end of the second heat pump 2 is connected to the heating medium input end of the valley power storage device 4 through the buffer water tank 6, which is used to buffer the flow of the medium.

[0032] The first heat pump 1 is specifically an air source heat pump.

[0033] Working principle: The first heat pump 1 absorbs heat energy from the air, and after compression, transfers the heat energy to the working fluid in the condenser of the first heat pump 1. The heated working fluid flows from the heating working fluid output end of the first heat pump 1 to the heating working fluid input end of the second heat pump 2. The second heat pump 2 absorbs heat energy from the working fluid and becomes a cooling working fluid. The cooling working fluid passes through the first heat exchanger 401 and returns to the cooling working fluid input end of the first heat pump 1. The heat energy after secondary compression is sent to the working fluid in the external pipe 3 in the condenser of the second heat pump 2. The heated working fluid after secondary compression flows out from the heating working fluid output end of the second heat pump 2 and outputs the secondary compressed heat energy through the heating working fluid output pipe 301.

[0034] During the valley power period, the first heat pump 1 absorbs heat energy from the air, and after compression, transfers the heat energy to the working fluid in the condenser of the first heat pump 1, and the heated working fluid flows from the heating working fluid output end of the first heat pump 1 to the heating working fluid input end of the second heat pump 2. At this time, the second heat pump does not start heat exchange, and the heating working fluid flows from the cooling working fluid output end of the second heat pump 2 to the heating working fluid output end of the first heat exchanger 401, and the heat energy is transported to the phase change energy storage device 402 through the first heat exchanger 401 and stored in the phase change energy storage device 402.

[0035] During peak electricity periods, the first heat pump 1 may not be started, and the first heat exchanger 401 transfers the heat energy of the phase change energy storage device 402 to the outside, so that the heating medium output end of the first heat exchanger 401 can output the heating medium and send it to the cooling medium input end of the first heat pump 1. After passing through the first heat pump 1, the heating medium outputs the heat energy stored in the phase change energy storage device 402 from the heating medium output end of the first heat pump 1 to the second heat pump 2, so that the second heat pump 2 can output the heat energy after secondary compression without starting the first heat pump 1, thereby significantly reducing the cost of energy use.

[0036] When the demand for heat energy is not high, neither the first heat pump 1 nor the second heat pump 2 is started, and only the second heat exchanger 403 is used to transport the heat energy in the phase change energy storage device 402 to the working fluid in the cooling working fluid input pipe 302. After the heated working fluid passes through the second heat pump 2, the heat energy is output to the outside from the heating working fluid output end of the second heat pump 2.

[0037] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, and may be located in one place or distributed over multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0038] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0039] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and concept of the utility model, and all these changes or substitutions should fall within the protection scope of the claims attached to the utility model.

Claims

1. A constant temperature energy-saving system for a scalding pool in a pig slaughtering assembly line, comprising a first heat pump (1), a second heat pump (2) and an external pipe (3) connected in sequence, wherein the heating medium output end of the first heat pump (1) is connected to the heating medium input end of the second heat pump (2), the heating medium output end of the second heat pump (2) is connected to the heating medium output pipe (301) of the external pipe (3), and the cooling medium output end of the second heat pump (2) is connected to the cooling medium input pipe (302) of the external pipe (3), characterized in that: It also includes a valley power storage device (4); The heating working medium input end of the valley power energy storage device (4) is connected to the cooling working medium output end of the second heat pump (2), the heating working medium output end of the valley power energy storage device (4) is connected to the cooling working medium input end of the second heat pump (2), and the cooling working medium output end of the valley power energy storage device (4) is connected to the cooling working medium input end of the first heat pump (1).

2. The constant temperature energy-saving system for the scalding pool of a pig slaughtering line according to claim 1, characterized in that: The valley power storage device (4) comprises a first heat exchanger (401) and a phase change energy storage device (402). The heating working medium input end of the first heat exchanger (401) is connected to the cooling working medium output end of the second heat pump (2), the cooling working medium output end of the first heat exchanger (401) is connected to the cooling working medium input end of the first heat pump (1), and the heating working medium output end of the first heat exchanger (401) and the cooling working medium input end of the first heat exchanger (401) are connected to the phase change energy storage device (402) to form a working medium circulation loop.

3. The constant temperature energy-saving system for the scalding pool of a pig slaughtering line according to claim 2 is characterized in that: The valley power storage device (4) further comprises a second heat exchanger (403), wherein a heating working medium output end of the second heat exchanger (403) is connected to a cooling working medium input end of the second heat pump (2), and the heating working medium input end of the second heat exchanger (403) and the cooling working medium output end of the second heat exchanger (403) are connected to the phase change energy storage device (402) to form a working medium circulation loop.

4. The constant temperature energy-saving system for the scalding pool of a pig slaughtering line according to claim 3 is characterized in that: The cooling medium input end of the second heat exchanger (403) is connected to the cooling medium input pipe (302) of the external pipe member (3).

5. The constant temperature energy-saving system for the scalding pool of a pig slaughtering line according to claim 1, characterized in that: The external pipe member (3) is provided with a hydraulic balancer (5); the heating medium output pipe (301) is connected to the heating medium output pipe of the second heat pump (2) through the hydraulic balancer (5); and the cooling medium input pipe (302) is connected to the cooling medium input end of the valley power storage device (4) through the hydraulic balancer (5).

6. The constant temperature energy-saving system for the scalding pool of a pig slaughtering line according to claim 1, characterized in that: It also comprises a buffer water tank (6), wherein the heating medium output end of the first heat pump (1) is connected to the heating medium input end of the second heat pump (2) via the buffer water tank (6), and the cooling medium output end of the second heat pump (2) is connected to the heating medium input end of the valley power storage device (4) via the buffer water tank (6).

7. The constant temperature energy-saving system for the scalding pool of a pig slaughtering line according to claim 1, characterized in that: The first heat pump (1) is an air source heat pump.

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