Skid-mounted container for heat source of water source heat pump

Abstract

The utility model provides a water source heat pump heat source skid-mounted container which comprises a container body and a water source heat pump unit, an evaporator water inlet of the water source heat pump unit is connected with a first water return pipe, the first water return pipe extends out of the container body and is provided with a heat source side water inlet flange, and an evaporator water outlet of the water source heat pump unit is connected with a first water outlet pipe. The first water outlet pipe extends out of the box body and is provided with a heat source side water outlet flange, and a first circulating water pump is arranged on the first water outlet pipe; a condenser water inlet of the water source heat pump unit is connected with a second water return pipe, the second water return pipe extends out of the box body and is provided with a heat supply side water inlet flange, a second circulating water pump is arranged on the second water return pipe, a condenser water outlet of the water source heat pump unit is connected with a second water outlet pipe, and the second water outlet pipe extends out of the box body and is provided with a heat supply side water outlet flange. According to the water source heat pump heat source skid-mounted container, the whole heat source system and the control system are integrated in one container, and the heat source side water inlet and outlet pipe and the heat supply side water inlet and outlet pipe extend out of the container and are provided with flanges, thereby facilitating factory assembly.

Description

TECHNICAL FIELD

[0001] The utility model belongs to water source heat pump energy -conserving technical field especially relates to a water source heat pump heat source pry mounted container. BACKGROUND

[0002] With the implementation of the national "double carbon" goal, in the grain and oil food drying industry, drying heat source combustion type boiler is gradually replaced by heat pump technology. In the existing heat pump technology, the water source heat pump, circulating water pump and auxiliary equipment are installed separately on site, the installation position is scattered, the whole installation process is relatively complicated and the quality cannot be guaranteed. In addition, since the water source heat pump system adopts the waste heat recovery and utilization circulating heating process, the heat source side and the heating side adopt closed circulation system, under the condition of no auxiliary heating, the temperature rising time is long, especially in the cold northern region in winter, because the environmental temperature is low, the water temperature of the heat source side is less than 5 DEG C, and the existing technology cannot solve the problem of heat pump starting without auxiliary heating. SUMMARY

[0003] The utility model provides a water source heat pump heat source pry mounted container, water source heat pump unit, circulating water pump, inlet and outlet water pipe, control system etc. are concentrated in a container, it is convenient for factory assembly debugging, and further, can reduce the noise problem of use site.

[0004] The technical scheme adopted by the utility model is:

[0005] A water source heat pump heat source pry mounted container, including the box, water source heat pump unit arranged in the box, the water inlet of the evaporator of water source heat pump unit is connected with first return water pipe, and the first return water pipe is arranged with heat source side water inlet flange and extends out of the box, the water outlet of the evaporator of water source heat pump unit is connected with first water outlet pipe, and the first water outlet pipe is arranged with heat source side water outlet flange and extends out of the box, and first circulating water pump is arranged on the first water outlet pipe;The water inlet of the condenser of water source heat pump unit is connected with second return water pipe, and the second return water pipe is arranged with heat supply side water inlet flange and extends out of the box, second circulating water pump is arranged on the second return water pipe, the water outlet of the condenser of water source heat pump unit is connected with second water outlet pipe, and the second water outlet pipe is arranged with heat supply side water outlet flange and extends out of the box;Electric control cabinet is arranged in the box, and water source heat pump unit, first circulating water pump, second circulating water pump are electrically connected with electric control cabinet respectively.

[0006] As preferred, it further includes a control screen, which is electrically connected with the electric control cabinet through a wire harness.

[0007] As preferred, a water supplement tank is arranged in the box, a water inlet of the water supplement tank is connected with a water supplement inlet pipe, and the water supplement inlet pipe arranged outside the box is provided with a water supplement inlet flange; a water outlet of the water supplement tank is connected with a third outlet pipe, the third outlet pipe is divided into two water supplement pipelines through a tee joint, a first water supplement pipeline is connected to the first outlet pipe, and a second water supplement pipeline is connected to the second return pipe; a water supplement pump is arranged on the third outlet pipe between the tee joint and the water outlet of the water supplement tank.

[0008] As preferred, a bypass pipeline is arranged on the water supplement inlet pipe, water inlets and outlets of the bypass pipeline are connected with the water supplement inlet pipe, a first manual valve is arranged on the water supplement inlet pipe between the bypass pipelines, and a first electric control valve is arranged on the bypass pipeline.

[0009] As preferred, a drain pipe is arranged in the box, and the drain pipe arranged outside the box is provided with a drain flange; a drain outlet of the water supplement tank is connected to the drain pipe through a pipeline, and a valve is arranged on the pipeline; the second water supplement pipeline outside the tee joint is connected to the drain pipe through a pipeline, and a valve is arranged on the pipeline.

[0010] As preferred, a low-temperature starting auxiliary module is arranged on the first return pipe, and the low-temperature starting auxiliary module is a steam heater or an electric heater.

[0011] As preferred, a mixed heating pipeline is arranged between the first return pipe and the second return pipe, a second electric control valve is arranged on the mixed heating pipeline, and the second electric control valve is electrically connected with an electric control cabinet.

[0012] As preferred, a one-way valve is arranged on the first outlet pipe between the first circulating water pump and the heat source side water outlet flange, and a one-way valve is arranged on the second return pipe between the second circulating water pump and the water inlet of the condenser.

[0013] As preferred, a filter is arranged on the second return pipe between the heat supply side water inlet flange and the second circulating water pump.

[0014] As preferred, a layer of sound-absorbing rock wool board or soundproof and heat-insulating cotton is arranged on an inner wall of the box.

[0015] Compared with the prior art, the water source heat pump heat source pry-mounted container has the advantages that the whole heat source system and control system, including the water source heat pump unit, circulating water pump, water inlet and outlet pipe, water supplement tank and electric control cabinet, are concentrated in one container, flanges are arranged on the heat source side and the heat supply side water inlet and outlet pipes which extend out of the container, so that factory assembly is facilitated, a low-temperature starting auxiliary module is arranged, so that the starting problem under low temperature can be solved, and further, a sound-absorbing rock wool board or sound insulation and heat preservation cotton is arranged on the inner side of the box body, so that the noise of the water source heat pump unit in the box body can be effectively reduced, and the noise problem of the use site is further reduced. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic view of the utility model.

[0017] In the figure: 1, box body; 2, water source heat pump unit; 3, heat source side water inlet flange; 4, heat source side water outlet flange; 5, heat supply side water inlet flange; 6, heat supply side water inlet flange; 7, first return water pipe; 8, first water outlet pipe; 9, second return water pipe; 10, first circulating water pump; 11, second water outlet pipe; 12, second circulating water pump; 13, water supplement tank; 14, water supplement inlet pipe; 15, water supplement inlet flange; 16, branch pipe; 17, third water outlet pipe; 18, electric control cabinet; 19, first water supplement pipe; 20, second water supplement pipe; 21, water supplement pump; 22, first manual valve; 23, first electric control valve; 24, blowdown pipe; 25, blowdown flange; 26, control screen; 27, low-temperature starting auxiliary module; 28, mixed heat pipe; 29, second electric control valve; 30, check valve; 31, filter. DETAILED DESCRIPTION

[0018] The utility model provides a simple structure, low noise, convenient installation, simple operation's water source heat pump heat source pry-mounted container, the whole heat source system (including water source heat pump unit, heat source side and heat supply side circulating water pump, heat source side and heat supply side water inlet and outlet pipeline, water supplement tank and control system (electric control cabinet etc.)) are concentrated in container, and heat source side and heat supply side water inlet and outlet pipe stretch out container and are provided with flange, facilitate factory assembly. Meanwhile, the arrangement of sound-absorbing rock wool board or sound insulation and heat preservation cotton on the inner side of the box body can effectively reduce the noise of the water source heat pump unit in the box body, and further reduce the noise of the use site. In addition, the box body can be disassembled, and the equipment maintenance is convenient and simple to operate.

[0019] Specifically, the box 1, the water source heat pump unit 2 arranged in the box 1, the evaporator water inlet of the water source heat pump unit 2 is connected with the first return water pipe 7, and the first return water pipe 7 is arranged with the heat source side water inlet flange 3 which is arranged outside the box, the evaporator water outlet of the water source heat pump unit 2 is connected with the first water outlet pipe 8, and the first water outlet pipe 8 is arranged with the heat source side water outlet flange 4 which is arranged outside the box, and the first water outlet pipe 8 is arranged with the first circulating water pump 10; the condenser water inlet of the water source heat pump unit 2 is connected with the second return water pipe 9, and the second return water pipe 9 is arranged with the heat supply side water inlet flange 5 which is arranged outside the box, the second return water pipe 9 is arranged with the second circulating water pump 12, the condenser water outlet of the water source heat pump unit 2 is connected with the second water outlet pipe 11, and the second water outlet pipe 11 is arranged with the heat source side water outlet flange 6 which is arranged outside the box; the box 1 is arranged with the electric control cabinet 18, and the water source heat pump unit 2, the first circulating water pump 10 and the second circulating water pump 12 are electrically connected with the electric control cabinet 18.

[0020] Wherein, the box has fixed structure and movable structure, the box side with flange is fixed structure, the wall without pipe is movable structure, which can be opened and closed, and is convenient for internal equipment maintenance.

[0021] The water source heat pump unit is centrifugal water source heat pump unit or screw water source heat pump unit. The first return water pipe 7, the first water outlet pipe 8, the second return water pipe 9 and the second water outlet pipe 11 are arranged with pressure sensors, temperature sensors and valves, the pressure sensors and the temperature sensors are electrically connected with the electric control cabinet respectively, for real-time detection of water pressure and water temperature, and for transmitting corresponding signals to the electric control cabinet. The valve is in open state for a long time, and is closed during maintenance.

[0022] In use, the heat source side water outlet flange 4 and the water inlet flange 3 are respectively connected with the inlet and return water pipes of the finned tube evaporator in the moisture removal and waste heat collection box, the water in the finned tube in the moisture removal and waste heat recovery box is collected and heated, and then enters the evaporator of the water source heat pump unit for heat release under the action of the first circulating water pump 10, and the low-temperature water after heat release enters the finned tube evaporator of the waste heat recovery box for further heat absorption; the heat supply side water outlet flange 6 and the water inlet flange 5 are respectively connected with the total inlet and outlet water pipes of the drying room, and circulate and radiate heat in the drying room under the action of the second circulating water pump 12, and then return to the condenser of the water source heat pump unit for further heating after cooling.

[0023] Since the container is used according to the lifting position on site, the position is high, in order to facilitate control, a control screen 26 is further included, and the control screen 26 is electrically connected with the electric control cabinet through a wire harness. The control screen is generally arranged on the wall of the fixed container, which is convenient for the operator to directly operate.

[0024] Further, the water supplementing tank 13 is arranged in the box 1, the water inlet of the water supplementing tank 13 is connected with the water supplementing inlet pipe 14, the water supplementing inlet pipe 14 extends out of the box and is provided with a water supplementing inlet flange 15; the water outlet of the water supplementing tank 13 is connected with the third water outlet pipe 17, the third water outlet pipe 17 is divided into two water supplementing pipes through a tee joint, the first water supplementing pipe 19 is connected to the first water outlet pipe 8, the second water supplementing pipe 20 is connected to the second water return pipe 9, and the water supplementing pump 21 is arranged on the third water outlet pipe 17 between the tee joint and the water outlet of the water supplementing tank. The water inlet flange is connected with the external water source to realize water inlet. Valves are arranged on the first water supplementing pipe and the second water supplementing pipe, and the valves are in an open state for a long time and are closed during maintenance. Here, the water supplementing tank is used to increase the water volume of the circulating water to ensure that the water temperature in the heat source and the heat supply side pipe changes stably.

[0025] Further, the water supplementing inlet pipe 14 is arranged with branch pipes 16, the water inlets and outlets of the branch pipes 16 are connected with the water supplementing inlet pipe 14, the water supplementing inlet pipe 14 between the branch pipes is provided with a first manual valve 22, the branch pipes 16 are provided with a first electric control valve 23, and the first electric control valve 23 is electrically connected with the electric control box 18. In order to intelligently control water supplementing, the first manual valve 22 on the water supplementing inlet pipe 14 is in a closed state for a long time, and water supplementing is realized by controlling the opening of the first electric control valve 23 on the branch pipe 16; when the first electric control valve 23 on the water supplementing inlet pipe 14 fails, the box can be opened to open the manual valve to supplement water without affecting production.

[0026] In use, the water supplementing inlet flange 15 is connected with the water outlet of the external water purifier. When the water level in the water supplementing tank decreases to a set value, the first electric control valve 23 is opened, the water purifier is started, and water is supplied to the water supplementing tank. When the pressure sensor on the pipe detects that the water pressure is lower than the set value, the water supplementing pump 21 sucks the water in the water supplementing tank 13 to supplement the pipe, and stops when the set value is reached.

[0027] Further, the box 1 is provided with a blowdown pipe 24, the blowdown pipe 24 extends out of the box and is provided with a blowdown flange 25 which is connected with the external blowdown pipe; the blowdown port of the water supplementing tank 13 is connected with the blowdown pipe through a pipe, and a valve is arranged on the pipe, the valve is in a closed state and is opened when the water tank is cleaned; the second water supplementing pipe 20 on the outer side of the tee joint is connected with the blowdown pipe through a pipe, and a valve is arranged on the pipe, the valve is in a closed state and is opened when the evaporator of the heat pump unit is emptied.

[0028] Further, the first return water pipe 7 is provided with a low-temperature start-up auxiliary module 27, which is a steam heater or an electric heater. The steam heater is a device that uses steam heat to heat the medium; the electric heater is composed of a shell with water inlet and outlet, a heating element arranged in the shell, etc.; here, the first return water pipe is disconnected and communicates with the water inlet and outlet of the steam heater or the electric heater, respectively, to improve the water temperature of the heat source.

[0029] Further, a mixed heat pipeline 28 is provided between the first return water pipe 7 and the second return water pipe 9, and a second electric control valve 29 is arranged on the mixed heat pipeline 28, which is electrically connected with the electric control cabinet 18. When the second return water pipe temperature sensor detects that the return water temperature is too high, the second electric control valve is opened, and under the joint action of the first circulating water pump and the second circulating water pump, the high-temperature water in the second return water pipe will be diverted to the first return water pipe, mixed with the low-temperature water on the heat source side, and enter the evaporator to absorb heat.

[0030] In order to ensure that the liquid does not backflow, a one-way valve 30 is arranged on the first water outlet pipe between the first circulating water pump 10 and the heat source side water outlet flange, and a one-way valve 30 is arranged on the second return water pipe between the second circulating water pump and the condenser water inlet. At the same time, a one-way valve is also arranged on the third water outlet pipe between the three-way valve and the water replenishment pump.

[0031] In order to ensure that the liquid entering the water source heat pump unit is clean, a filter 31 is arranged on the second return water pipe 9 between the heat supply side water inlet flange 5 and the second circulating water pump 12.

[0032] Further, considering the problem that the water source heat pump unit (centrifugal machine, screw machine) in the box body is usually noisy and needs a separate equipment room, a layer of sound-absorbing rock wool board or soundproof insulation cotton is arranged on the inner wall of the container box (not shown in the figure) to achieve sound insulation. The former reduces noise by blocking sound energy transmission, and the latter converts sound energy into heat energy to achieve sound-absorbing effect. The two are used together for better effect.

[0033] The arrangement and working process of the container are as follows:

[0034] 1. The box body is hoisted according to the site location, and the control screen is arranged on the wall of the fixed box body;

[0035] 2. The water replenishment water inlet flange and the sewage flange are respectively connected with the water purifier and the sewage pipeline outside;

[0036] 3. The water outlet and water inlet flanges of the box body are respectively connected with the return water pipes of the finned tube evaporator inside the moisture removal wind waste heat collection box, and the water outlet and water inlet flanges of the heat supply side are respectively connected with the total water inlet and outlet pipes of the drying room. The whole system is completed.

[0037] The water in the finned tube evaporator in the waste heat recovery tank absorbs heat and then enters the evaporator of the water source heat pump unit to release heat under the action of the first circulating water pump. The low-temperature water after heat release enters the finned tube evaporator in the waste heat recovery tank to continue heat absorption. Under the action of the compressor of the water source heat pump unit, the high-temperature and high-heat refrigerant enters the condenser to release heat and heat water. The high-temperature water enters the drying room to release heat and dry the materials under the action of the second circulating water pump. The cooled circulating water returns to the condenser to continue heating.

[0038] 4. When the pressure sensor on the pipeline detects that the water pressure is lower than the set value, the water supplement pump sucks water in the water supplement tank to supplement the pipeline, and stops when the set value is reached. When the water level in the water supplement tank is lower than the set value, the first electric control valve is opened, and the water purifier starts to supplement water.

[0039] When the whole system starts, there is no exhaust air waste heat utilization due to the low temperature of the drying room. When the water temperature on the heat source side is detected to be lower than 5℃, the low-temperature starting auxiliary module starts to work to increase the water temperature on the heat source side, so as to protect the normal operation of the heat pump unit. When the temperature sensor on the pipeline detects that the temperature reaches the set value, the low-temperature starting auxiliary module stops working, and the whole system enters the normal working state.

Claims

1. A water source heat pump heat source skid mounted container, characterized by: The water source heat pump unit is arranged in the box body, the water inlet of the evaporator of the water source heat pump unit is connected with the first return water pipe, the first return water pipe is arranged with a heat source side water inlet flange, the water outlet of the evaporator of the water source heat pump unit is connected with the first water outlet pipe, the first water outlet pipe is arranged with a heat source side water outlet flange, and the first circulating water pump is arranged on the first water outlet pipe; the water inlet of the condenser of the water source heat pump unit is connected with the second return water pipe, the second return water pipe is arranged with a heat supply side water inlet flange, the second return water pipe is arranged with the second circulating water pump, the water outlet of the condenser of the water source heat pump unit is connected with the second water outlet pipe, and the second water outlet pipe is arranged with a heat supply side water outlet flange; the electric control cabinet is arranged in the box body, and the water source heat pump unit, the first circulating water pump and the second circulating water pump are electrically connected with the electric control cabinet.

2. The water source heat pump heat source skid-mounted container according to claim 1, characterized in that: The control screen is electrically connected with the electric control cabinet through a wire harness.

3. The water source heat pump heat source skid-mounted container according to claim 1, characterized in that: The water inlet of the water supplement tank is connected with the water supplement inlet pipe, and the water supplement inlet pipe is arranged with a water supplement inlet flange; the water outlet of the water supplement tank is connected with the third water outlet pipe, the third water outlet pipe is divided into two water supplement pipelines through a three-way pipe, the first water supplement pipeline is connected to the first water outlet pipe, the second water supplement pipeline is connected to the second return water pipe, and the third water outlet pipe between the three-way pipe and the water outlet of the water supplement tank is arranged with a water supplement pump.

4. The water source heat pump heat source skid-mounted container according to claim 3, characterized in that: The water supplement inlet pipe is arranged with a bypass pipeline, the water inlets and outlets of the bypass pipeline are communicated with the water supplement inlet pipe, the first manual valve is arranged on the water supplement inlet pipe between the bypass pipelines, and the first electric control valve is arranged on the bypass pipeline.

5. The water source heat pump heat source skid-mounted container according to claim 3, characterized in that: The box body is arranged with a blowdown pipe, and the blowdown pipe is arranged with a blowdown flange; the blowdown pipe of the water supplement tank is connected to the blowdown pipe through a pipeline, and a valve is arranged on the pipeline; the second water supplement pipeline outside the three-way pipe is communicated with the blowdown pipe through a pipeline, and a valve is arranged on the pipeline.

6. The water source heat pump heat source skid-mounted container according to claim 1, characterized in that: The first return water pipe is arranged with a low-temperature starting auxiliary module, and the low-temperature starting auxiliary module is a steam heater or an electric heater.

7. The water source heat pump heat source skid-mounted container according to claim 1, characterized in that: The first return water pipe and the second return water pipe are arranged with a mixed heat pipeline, the second electric control valve is arranged on the mixed heat pipeline, and the second electric control valve is electrically connected with the electric control cabinet.

8. The water source heat pump heat source skid-mounted container according to claim 1, characterized in that: The first water outlet pipe between the first circulating water pump and the heat source side water outlet flange is arranged with a one-way valve, and the second return water pipe between the second circulating water pump and the water inlet of the condenser is arranged with a one-way valve.

9. The water source heat pump heat source skid-mounted container according to claim 1, characterized in that: The second return water pipe between the heat supply side water inlet flange and the second circulating water pump is arranged with a filter.

10. The water source heat pump heat source skid-mounted container according to claim 1, characterized in that: The inner wall of the box body is arranged with a layer of sound-absorbing rock wool board or sound insulation and heat preservation cotton.

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