High-temperature heat pump cold and heat comprehensive utilization double-effect system of large screw unit

Abstract

The utility model provides a cold and heat comprehensive utilization double-effect system of a high-temperature heat pump of a large-scale screw unit. The cold and heat comprehensive utilization double-effect system comprises a screw heat pump host, a freezing water tank, a hot water tank and a heat exchange balance system, compared with the prior art, water in the chilled water tank is pumped into the evaporation side of the screw heat pump main machine for refrigeration, the chilled water is conveyed to the chilled water use end for use, and the chilled water returns to the chilled water tank for recirculating refrigeration after cold energy is released; water in the hot water tank is pumped into a condensation side of the screw heat pump main machine to be heated, hot water is conveyed to a high-temperature hot water using end to be used, the hot water returns to the hot water tank to be circularly heated after heat is released, and heat can be discharged to the outside through the heat exchange balance system under the condition that heat is redundant, so that the cooling capacity of chilled water is continuously produced, and the production efficiency is improved. Usage of units can be effectively reduced, the use cost of equipment is reduced, control is easy, water energy can be recycled, and environment friendliness is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat pump unit technical field, concretely relates to a large -scale screw rod unit high temperature heat pump cold and heat comprehensive utilization double -effect system. BACKGROUND

[0002] At present, in the large -scale use occasion such as aluminum material oxidation process application, slaughter, fungi drying and cold and heat dual -purpose, single cold water unit and hot water boiler (electric heating boiler or gas boiler) are mostly used separately, especially the heat pump system combined by small unit such as scroll compressor, and the unit is more, control is difficult, and the equipment cost is high. CONTENT OF UTILITY MODEL

[0003] The utility model discloses a large -scale screw rod unit high temperature heat pump cold and heat comprehensive utilization double -effect system, aims at solving the single cold water unit and hot water boiler separate use in prior art, lead to need multiple unit combination use, control is difficult, and the equipment cost is high.

[0004] In order to reach the above -mentioned purpose, the utility model provides a large -scale screw rod unit high temperature heat pump cold and heat comprehensive utilization double -effect system, include: screw rod heat pump host computer, be equipped with evaporative water inlet end, evaporative water outlet end, condensation water inlet end and condensation water outlet end on the screw rod heat pump host computer, the water outlet end is connected with the chilled water use end through the pipeline, the condensation water outlet end is connected with the high temperature hot water use end through the pipeline, the chilled water tank is connected with evaporative water inlet end through the pipeline, and the chilled water tank is connected with the chilled water return water end through the pipeline, the hot water tank is connected with the condensation water inlet end through the pipeline, and the hot water tank is connected with the high temperature hot water return water end through the pipeline, heat exchange balance system, heat exchange balance system is connected with the chilled water return water end and high temperature hot water return water end through the pipeline in series, and the water flow direction is controlled through the valve.

[0005] Further, the pipeline between the chilled water tank and the evaporative water inlet end is provided with a chilled water pump and a chilled water filter.

[0006] Further, the pipeline between the hot water tank and the condensation water inlet end is provided with a high temperature hot water pump and a high temperature hot water filter.

[0007] Further, the heat exchange balance system includes a cooling tower and a water plate heat exchanger unit, and the pipelines of the water inlet end and the water outlet end of the cooling tower are connected with the pipelines of the chilled water return water end and the high temperature hot water return water end through the water plate surrounding unit.

[0008] Further, the pipeline connected between the cooling tower and the water plate heat exchanger unit is provided with a cooling tower circulating water pump.

[0009] Further, first, second, third, fourth, fifth, sixth, seventh and eighth valves are respectively arranged on pipes connected between the heat pump host, the chilled water tank, the chilled water use end, the chilled water return end, the hot water tank, the high-temperature hot water use end, the high-temperature hot water return end and the heat exchange balance system.

[0010] Compared with the prior art, water in the chilled water tank is punched into the evaporation side of the screw heat pump host to perform refrigeration and is transported to the chilled water use end for use, is returned to the chilled water tank to recycle refrigeration after releasing cold energy, is transported to the chilled water tank through the pipe connected with the chilled water return end to be stored for use of the chilled water use end next time when the chilled water use end stops working; water in the hot water tank is punched into the condensation side of the screw heat pump host to perform heating and is transported to the high-temperature hot water use end for use, is returned to the hot water tank to recycle heating after releasing heat, is transported to the hot water tank through the pipe connected with the high-temperature hot water return end to be stored for use of the high-temperature hot water use end next time when the high-temperature hot water use end stops working; in the case of excess heat, the heat exchange balance system can be used to discharge heat to the outside, so that the chilled water cold energy can continue to be produced, the use of the unit can be effectively reduced, the equipment use cost is reduced, the control is simple, the water energy can be recycled, and the device is green and environmentally friendly. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 FIG. 1 is a structural schematic view of a large screw unit high-temperature heat pump cold and heat comprehensive utilization double-effect system according to the present application.

[0012] REFERENCE SIGNS

[0013] 1- screw heat pump host; 11- chilled water use end; 12- high-temperature hot water use end;

[0014] 2- chilled water tank; 21- chilled water return end; 22- chilled water pump; 23- chilled water filter;

[0015] 3- hot water tank; 31- high-temperature hot water return end; 32- high-temperature hot water pump; 33- high-temperature hot water filter;

[0016] 4- cooling tower; 41- water plate heat exchange unit; 42- cooling tower circulating water pump;

[0017] 51- first valve; 52- second valve; 53- third valve; 54- fourth valve; 55- fifth valve; 56- sixth valve; 57- seventh valve; 58- eighth valve. DETAILED DESCRIPTION

[0018] The present application will be described in detail below in combination with specific embodiments.

[0019] In the utility model, when the orientation word appears, for the orientation word, it is for the convenience of narrating the utility model and simplifying the description, and is not indicative or suggestive of the device or element indicated must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific protection scope of the utility model.

[0020] In the utility model, except for another explicit provision and limitation, when the terms such as“set in”,“connected”,“connected” appear, these terms should be understood in a broad sense, for example, can be fixedly connected, can be detachably connected, or integrally connected;It can also be a mechanical connection;It can be directly connected, or connected through an intermediate medium, or two elements can be connected internally. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0021] As shown in Figure 1 A large screw rod unit high temperature heat pump cold and heat comprehensive utilization double effect system, including screw heat pump host 1, chilled water tank 2, hot water tank 3 and heat exchange balance system.

[0022] Screw heat pump host 1 is provided with evaporation water inlet end, evaporation water outlet end, condensation water inlet end and condensation water outlet end, and the evaporation water outlet end is connected with the chilled water use end 11 through the pipeline, and the condensation water outlet end is connected with the high temperature hot water use end 12 through the pipeline.

[0023] Chilled water tank 2 is connected with evaporation water inlet end through pipeline, and chilled water tank 2 is connected with chilled water return end 21 through pipeline. Hot water tank 3 is connected with condensation water inlet end through pipeline, and hot water tank 3 is connected with high temperature hot water return end 31 through pipeline.

[0024] Heat exchange balance system, heat exchange balance system is connected with chilled water return end 21 and high temperature hot water return end 31 in series through pipeline, and the flow direction of water is controlled through valve. In the case of excess heat, heat can be discharged to the outside through the heat exchange balance system, so that the chilled water cold capacity can continue to produce.

[0025] In this embodiment, the pipeline between the chilled water tank 2 and the evaporation water inlet end is provided with a chilled water pump 22 and a chilled water filter 23. The chilled water pump 22 is used for conveying the chilled water in the chilled water tank 2, and the chilled water filter 23 is used for protecting equipment, ensuring the quality of cooling water and prolonging the service life of equipment.

[0026] In this embodiment, the pipeline between the hot water tank 3 and the condensation water inlet end is provided with a high temperature hot water pump 32 and a high temperature hot water filter 33. The high temperature hot water pump 32 is used for conveying the high temperature hot water in the hot water tank 3, and the high temperature hot water filter 33 is used for protecting equipment, ensuring the quality of cooling water and prolonging the service life of equipment.

[0027] In the embodiment, the heat exchange balancing system comprises the cooling tower 4 and the water plate heat exchange unit 41, and the pipes of the water inlet end and the water outlet end of the cooling tower 4 are connected in series with the pipes of the chilled water return end 21 and the high-temperature hot water return end 31 through the water plate surrounding unit.

[0028] In the embodiment, the cooling tower circulating water pump 42 is arranged on the pipe connected between the cooling tower 4 and the water plate heat exchange unit 41.

[0029] In the embodiment, the first valve 51, the second valve 52, the third valve 53, the fourth valve 54, the fifth valve 55, the sixth valve 56, the seventh valve 57 and the eighth valve 58 are respectively arranged on the pipes connected between the screw heat pump main machine 1, the chilled water tank 2, the chilled water use end 11, the chilled water return end 21, the hot water tank 3, the high-temperature hot water use end 12, the high-temperature hot water return end 31 and the heat exchange balancing system, for controlling the flow direction of the hot and cold water.

[0030] Working principle: the water in the chilled water tank 2 is pumped into the evaporation side of the screw heat pump main machine 1 to perform refrigeration and deliver the chilled water to the chilled water use end 11 for use, and after releasing the cold quantity, the water is returned to the chilled water tank 2 to be recycled for refrigeration, and when the chilled water use end 11 stops working, the water is delivered to the chilled water tank 2 through the pipe connected with the chilled water return end 21 for storage for the next time of use of the chilled water use end 11.

[0031] The water in the hot water tank 3 is pumped into the condensation side of the screw heat pump main machine 1 to perform heating and deliver the hot water to the high-temperature hot water use end 12 for use, and after releasing the heat, the water is returned to the hot water tank 3 to be recycled for heating, and when the high-temperature hot water use end 12 stops working, the water is delivered to the hot water tank 3 through the pipe connected with the high-temperature hot water return end 31 for storage for the next time of use of the high-temperature hot water use end 12.

[0032] In the case of excess heat, the heat exchange balancing system can be used to discharge heat to the outside, so that the chilled water cold quantity can continue to be produced.

[0033] When the high-temperature hot water use end 12 and the chilled water use end 11 are both working, the first valve 51 and the second valve 52 are opened, the third valve 53 and the fourth valve 54 are closed, and the fifth valve 55, the sixth valve 56, the seventh valve 57 and the eighth valve 58 are closed, and the chilled water pump 22 and the hot water pump are opened.

[0034] When the hot water use end is working and the chilled water use end 11 is not working, the first valve 51 and the second valve 52 are opened, the third valve 53 and the fourth valve 54 are closed, the fifth valve 55 and the sixth valve 56 are closed, the seventh valve 57 and the eighth valve 58 are opened, the chilled water pump and the hot water pump are opened, and the cooling tower 4 and the cooling tower 4 circulating pump are opened (a heat source is needed in winter), and the cooling tower 4 works on the hot water side with the heat source.

[0035] When the hot water use end is not in operation and the chilled water use end 11 is in operation, the first valve 51 and the second valve 52 are closed, the third valve 53 and the fourth valve 54 are opened, the fifth valve 55 and the sixth valve 56 are opened, the seventh valve 57 and the eighth valve 58 are closed, the chilled water pump 22 and the hot water pump are opened (a heat source is needed in winter), the cooling tower 4 and the cooling tower 4 circulating pump are opened, the heat source is released from the cooling tower 4 to work on the chilled water side, and heat is discharged.

[0036] Thus, the energy regulation and control of the refrigeration and heating of the screw heat pump host 1 can be realized, and four-level regulation of 25%, 50%, 75% and 100% can be realized.

[0037] Compared with the prior art, the water in the chilled water tank 2 is punched into the evaporation side of the screw heat pump host 1 to perform refrigeration and deliver chilled water to the chilled water use end 11 for use, and after releasing cold energy, the water returns to the chilled water tank 2 to be recycled for refrigeration. When the chilled water use end 11 stops working, the water is delivered to the chilled water tank 2 through the pipeline connected by the chilled water return water end 21 for storage for next time use of the chilled water use end 11. The water in the hot water tank 3 is punched into the condensation side of the screw heat pump host 1 to perform heating and deliver hot water to the high-temperature hot water use end 12 for use, and after releasing heat, the water returns to the hot water tank 3 to be recycled for heating. When the high-temperature hot water end stops working, the water is delivered to the hot water tank 3 through the pipeline connected by the high-temperature hot water return water end 31 for storage for next time use of the high-temperature hot water use end 12. In the case of excess heat, the heat exchange balancing system can discharge heat to the outside, so that the chilled water cold energy can continue to be produced, the use of the unit can be effectively reduced, the equipment use cost is reduced, the control is simple, the water energy can be recycled, and the device is green and environmentally friendly.

[0038] In the case of no conflict, the above embodiments and features in the embodiments can be combined with each other.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the protection scope of the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the essence and scope of the technical solutions of the present application.

Claims

1. A large screw machine unit high temperature heat pump cold and heat comprehensive utilization double effect system, characterized in that, Include: Screw heat pump host, the screw heat pump host is equipped with evaporation water inlet end, evaporates water outlet, condensation water inlet end and condensation water outlet; The water outlet end is connected with the chilled water use end through the pipeline, and the condensation water outlet end is connected with the high temperature hot water use end through the pipeline; Chilled water tank, the chilled water tank is connected with the evaporation water inlet end through the pipeline, and the chilled water tank is connected with the chilled water return end through the pipeline; Hot water tank, the hot water tank is connected with the condensation water inlet end through the pipeline, and the hot water tank is connected with the high temperature hot water return end through the pipeline; Heat exchange balance system, the heat exchange balance system is connected with the chilled water return end and the high temperature hot water return end through the pipeline in series, and the flow direction of water is controlled through the valve.

2. The large screw machine set high-temperature heat pump cold and heat comprehensive utilization double-effect system according to claim 1, characterized in that, The pipeline between the chilled water tank and the evaporation water inlet end is provided with a chilled water pump and a chilled water filter.

3. The large screw machine set high-temperature heat pump cold and heat comprehensive utilization double-effect system according to claim 1, characterized in that, The pipeline between the hot water tank and the condensation water inlet end is provided with a high temperature hot water pump and a high temperature hot water filter.

4. The large screw machine set high-temperature heat pump cold and heat comprehensive utilization double-effect system according to claim 1, characterized in that, The heat exchange balance system includes cooling tower and water plate heat exchanger unit, the pipeline of the water inlet end and the water outlet end of the cooling tower is connected with the pipeline of the chilled water return end and the high temperature hot water return end through the water plate surrounding unit.

5. The large screw machine set high-temperature heat pump cold and heat comprehensive utilization double-effect system according to claim 4, characterized in that, The pipeline connected between the cooling tower and the water plate heat exchanger unit is provided with a cooling tower circulating water pump.

6. The large screw machine set high-temperature heat pump cold and heat comprehensive utilization double-effect system according to claim 1, characterized in that, The pipeline connected between the heat pump host, the chilled water tank, the chilled water use end, the chilled water return end, the hot water tank, the high temperature hot water use end, the high temperature hot water return end and the heat exchange balance system is respectively provided with a first valve, a second valve, a third valve, a fourth valve, a fifth valve, a sixth valve, a seventh valve and an eighth valve.

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