Water source heat pump system combined with fire pool for energy storage

Abstract

The utility model discloses a water source heat pump system combined with fire pool energy storage, which comprises a first water source heat pump unit, a fire pool, a water intake well, a water return well, a first water pump, a second water pump, a third water pump, a first heat exchanger and a second heat exchanger, and the fire pool comprises a first pool, a second pool, a third pool and a fourth pool; the first water pump is communicated between the first water source heat pump unit and the water intake well through a water intake pipeline; the first heat exchanger is arranged among the water taking pipeline, the first water tank and the fourth water tank, and the second heat exchanger is arranged among the energy supply end of the first water source heat pump unit, the first water tank and the fourth water tank; according to the utility model, the energy supply end of the water source heat pump unit exchanges heat with water in the fire pool, the exchanged energy is stored in the fire pool, and when the water source water of the water intake well supply water source heat pump needs to be subjected to heat exchange, the water in the fire pool exchanges heat with the water source water; therefore, the water inlet temperature stability of the water source side of the water source heat pump is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat pump energy supply, and in particular relates to a water source heat pump system combined with fire water pool energy storage. Background Art

[0002] The application of heat pump energy technology in building heating systems is gradually becoming mature. Generally, building heating will adopt a ground / water source heat pump system, that is, geothermal / water heat is used as the heat source medium entering the heat pump unit. Among them, in the water source heat pump, the water is directly sent to the water source heat pump from the water intake point (underground, lakes, etc.). When groundwater is used, the water temperature is different due to the different underground water intake depths, which affects the stable operation ability of the water source heat pump unit; and when a lake is used as the water source medium, the temperature of the lake water is greatly affected by light and air temperature, and the stability of the water source heat pump is also not effectively guaranteed. Therefore, in the process of using the water source heat pump, how to reduce the large temperature fluctuation of the water source medium needs further research. Utility Model Content

[0003] In view of the above problems, the purpose of the present utility model is to provide a water source heat pump system combined with fire water tank energy storage, which can enhance the water flow in the fire water tank and improve the operational stability of the heat pump system.

[0004] The technical solution to realize the utility model is as follows

[0005] A water source heat pump system combined with fire water tank energy storage includes a first water source heat pump unit, a fire water tank, a water intake well, a return well, a first water pump, a second water pump, a third water pump, a first heat exchanger, and a second heat exchanger. The fire water tank includes a No. 1 water tank, a No. 2 water tank, a No. 3 water tank, and a No. 4 water tank. The water in the No. 1 water tank overflows toward the No. 2 water tank, the water in the No. 2 water tank overflows toward the No. 3 water tank, and the water in the No. 3 water tank overflows toward the No. 4 water tank.

[0006] The first water pump is connected between the first water source heat pump unit and the water intake well through a water intake pipeline to send water in the water intake well into the first water source heat pump unit;

[0007] The primary inlet of the first heat exchanger is connected to the outlet of the second water pump, the inlet of the second water pump is connected to the No. 4 water tank, the primary outlet of the first heat exchanger is connected to the No. 1 water tank, the secondary inlet and the secondary outlet of the first heat exchanger are connected to the water intake pipeline, and the first valve group is installed on the water intake pipeline and the secondary inlet of the first heat exchanger to switch the groundwater in the water intake well to flow through the first heat exchanger and then enter the first water source heat pump unit or directly enter the first water source heat pump unit;

[0008] The primary side of the second heat exchanger is connected to the energy supply end of the first water source heat pump unit, and the fluid at the energy supply end of the first water source heat pump unit flows back to the first water source heat pump unit through the primary side of the second heat exchanger; the secondary side inlet end of the second heat exchanger is connected to the No. 4 water tank, and the secondary side outlet end of the second heat exchanger is connected to the No. 1 water tank;

[0009] The third water pump is connected with the No. 1 water tank, the No. 2 water tank, the No. 3 water tank and the No. 4 water tank, and the third water pump delivers the water in the No. 1 water tank and / or the No. 2 water tank and / or the No. 3 water tank and / or the No. 4 water tank into the fire-fighting pipeline.

[0010] As a further improvement scheme, the secondary inlet end of the second heat exchanger is connected to the primary outlet end of the first heat exchanger, and the secondary outlet end of the second heat exchanger is connected to the No. 1 water tank. A second valve group is installed at the primary outlet end of the first heat exchanger and the secondary inlet end of the second heat exchanger to control the discharge fluid from the primary side of the first heat exchanger to enter the secondary side of the second heat exchanger or the No. 1 water tank.

[0011] As a further improvement scheme, it also includes a second water source heat pump unit and a third heat exchanger. The second water source heat pump unit is connected in parallel to the secondary side of the first heat exchanger; the primary side of the third heat exchanger is connected to the energy supply end of the second water source heat pump, and the fluid at the energy supply end of the second water source heat pump unit flows through the primary side of the third heat exchanger and flows back to the second water source heat pump unit. The secondary side inlet end of the third heat exchanger is connected to the No. 4 water tank, and the secondary side outlet end of the third heat exchanger is connected to the No. 1 water tank.

[0012] As a further improvement, the secondary side of the second heat exchanger and the secondary side of the third heat exchanger are connected together in series or in parallel.

[0013] As a further improvement, the fire water pool is separated into independent No. 1, No. 2, No. 3 and No. 4 water pools by four partitions.

[0014] Water pool No. 1 is separated from water pool No. 2 by a first partition, water pool No. 2 is separated from water pool No. 3 by a second partition, water pool No. 3 is separated from water pool No. 4 by a third partition, and water pool No. 4 is separated from water pool No. 1 by a fourth partition; the first partition, the second partition, the third partition, and the fourth partition are arranged in a cross form in the fire water pool.

[0015] As a further improvement scheme, the first barrier, the second barrier, the third barrier and the fourth barrier can be detachably assembled in the fire water tank; an intermediate clamping column is arranged at the central position in the fire water tank along the depth direction of the fire water tank, and the outer periphery of the intermediate clamping column has four clamping surfaces, and the four clamping surfaces are facing one by one with the four inner walls of the fire water tank; the outer end of the first barrier, the outer end of the second barrier, the outer end of the third barrier and the outer end of the fourth barrier correspond one by one to the four inner walls of the fire water tank and are detachably arranged, and the inner end of the first barrier, the inner end of the second barrier, the inner end of the third barrier and the inner end of the fourth barrier correspond one by one to the four clamping surfaces of the intermediate clamping column and form a clamping connection.

[0016] As a further improvement scheme, the first partition member and the second partition member, the second partition member and the third partition member, the third partition member and the fourth partition member, and the fourth partition member and the first partition member are respectively connected by L-shaped connecting blocks. The L-shaped connecting blocks extend along the depth direction of the fire water tank and are equipped with multiple connecting bolts to form connections with the partition members.

[0017] As a further improvement scheme, water tank No. 1 is connected to pipe No. 1, water tank No. 2 is connected to pipe No. 2, water tank No. 3 is connected to pipe No. 3, and water tank No. 4 is connected to pipe No. 4. Pipe No. 1, pipe No. 2, pipe No. 3, and pipe No. 4 are connected to the inlet end of the third water pump and are respectively equipped with water outlet control valves. The outlet end of the third water pump is connected to a high-level static pressure water tank, and the high-level static pressure water tank is connected to the fire-fighting pipeline.

[0018] As a further improvement plan, water level sensors are installed in water pool No. 1, water pool No. 2, water pool No. 3 and water pool No. 4 respectively, and temperature sensors are also installed in water pool No. 1, water pool No. 2, water pool No. 3, water pool No. 4 and the water intake well respectively.

[0019] By adopting the above technical scheme, without affecting the normal use of the fire water pool, the energy supply end of the water source heat pump unit is used to exchange heat with the water in the fire water pool, and the exchanged energy is stored in the fire water pool. When the source water of the water source heat pump supplied by the water well needs to exchange energy, the water in the fire water pool is heat exchanged with the source water, so as to increase the stability of the water inlet temperature on the water source side of the water source heat pump and improve the operating stability of the water source heat pump system; in addition, through the overflow setting of multiple water pools in the fire water pool, the water flow capacity in the fire water pool can be improved, reducing the risk of water quality reduction due to stagnation of water in the fire water pool. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a system schematic diagram of the utility model;

[0021] Figure 2 It is a simple schematic diagram of a top view of a fire water tank in the utility model;

[0022] Figure 3 for Figure 2 A is an enlarged schematic diagram;

[0023] Figure 4 It is a bottom schematic diagram of the fire water tank in the utility model;

[0024] Figure 5 This is a bottom view structural diagram of the upper cover in the utility model; DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-5 As shown, the water source heat pump system combined with the fire water tank energy storage includes a first water source heat pump unit 10, a fire water tank 11, a water intake well 12, a return well 13, a first water pump 14, a second water pump 15, a third water pump 16, a first heat exchanger 17, and a second heat exchanger 18. The first water source heat pump unit 10 is used to obtain the energy contained in the water source medium from the water source side to supply energy to the energy supply side of the water source heat pump unit and to supply energy to the user end; the fire water tank 11 is buried below the ground and is used to store fire water and provide fire water for the fire pipeline; the water intake well 12, a return well 13, a first water pump 14, a second water pump 15, a third water pump 16, a first heat exchanger 17, and a second heat exchanger 18. The first water source heat pump unit 10 is used to obtain the energy contained in the water source medium from the water source side to supply energy to the energy supply side of the water source heat pump unit and to supply energy to the user end; the fire water tank 11 is buried below the ground and is used to store fire water and provide fire water for the fire pipeline; The well 12 is below the ground and is used to obtain water from the water intake well 12 for use by the water source heat pump unit; the return well 13 is located around the water intake well 12, and the water in the return well 13 can penetrate into the return well 13 to make up for the water level in the water intake well 12. The return water position in the return well 13 is higher than the water intake position in the water intake well 12, forming a high water level in the return well 13 and a low water level in the water intake well 12, and a water flow trend from high to low, so as to ensure that the return water in the return well 13 can stably flow and penetrate into the water intake well 12. The first heat exchanger 17 is used to exchange heat between the water in the fire water tank 11 and the water in the water well 12. The second heat exchanger 18 is used to exchange heat between the water flowing back into the fire water tank 11 and the circulating water at the energy supply end of the first water source heat pump unit 10. The first water pump 14 is used to provide power for the flow on the water source side of the water source heat pump. The second water pump 15 is used to provide circulating flow for the water in the fire water tank 11.

[0027] The fire water tank 11 includes a No. 1 water tank 19, a No. 2 water tank 20, a No. 3 water tank 21, and a No. 4 water tank 22. The water in the No. 1 water tank 19 overflows toward the No. 2 water tank 20, the water in the No. 2 water tank 20 overflows toward the No. 3 water tank 21, and the water in the No. 3 water tank 21 overflows toward the No. 4 water tank 22, so that the water in the fire water tank 11 can flow, reducing the risk of reduced water quality due to stagnation of water in the fire water tank 11.

[0028] The first water pump 14 is connected to the first water source heat pump unit 10 and the water intake well 12 through a water intake pipe to deliver the water in the water intake well 12 into the water source heat pump unit; that is, the water in the water intake well 12 is delivered to the first water source heat pump unit 10 through the first water pump 14, and the water in the water intake well 12 is used as the working fluid on the water source side of the first water source heat pump unit 10.

[0029] The primary side inlet of the first heat exchanger 17 is connected to the outlet of the second water pump 15 through the first pipe 23, the inlet of the second water pump 15 is connected to the No. 4 water tank 22, the primary side outlet of the first heat exchanger 17 is connected to the No. 1 water tank 19 through the second pipe 24, the secondary side inlet and the secondary side outlet of the first heat exchanger 17 are connected to the water intake pipe 25, and the first valve group is installed on the water intake pipe 25 and the secondary side inlet of the first heat exchanger 17 to switch the groundwater in the water intake well 12 to flow through the first heat exchanger 17 and then enter the first water source heat pump unit 10 or directly enter the first water source heat pump unit 10. That is, the secondary side inlet end of the second heat exchanger 18 is connected to the water intake pipe 25 through the third pipe 26, and the secondary side outlet end is connected to the water intake pipe 25 through the fourth pipe 27. The first valve group includes a first control valve 28 and a second control valve 29. The first control valve is installed on the water intake pipe 25 between the third pipe 26 and the fourth pipe 27. The second control valve 29 is installed on the secondary side inlet end of the first heat exchanger 17. Through the first control valve 28 and the second control valve 29, the water in the water intake well 12 can be switched to enter the first water source heat pump unit 10 after passing through the first heat exchanger 17, or directly enter the first water source heat pump unit 10.

[0030] The primary side of the second heat exchanger 18 is connected to the energy supply end of the first water source heat pump unit 10, and the fluid at the energy supply end of the first water source heat pump unit 10 flows back to the first water source heat pump unit 10 through the primary side of the second heat exchanger 18; here, the energy supply end of the first water source heat pump unit 10 can be the inlet end of the energy supply end or the return end of the energy supply end, the primary side inlet end of the second heat exchanger 18 is connected to the energy supply inlet end of the first water source heat pump unit 10 through the fifth pipeline 30, and is connected to the energy supply return end of the first water source heat pump unit 10 through the sixth pipeline 31, a third control valve 32 is installed on the fifth pipeline 30, a fourth control valve 33 is installed on the sixth pipeline 31, and a fifth control valve 34 and a sixth control valve 35 are installed on the inlet and return ends of the energy supply end of the first water source heat pump unit 10 respectively; when it is necessary to heat the first water source heat pump unit 10 from the first water source heat pump unit 1 When the circulating water is sent into the second heat exchanger 18 from the inlet of the energy supply end, the third control valve 32, the fifth control valve 34 and the sixth control valve 35 are opened, and the fourth control valve 33 is closed. The third control valve 32 and the fifth control valve 34 have different opening sizes. In order to ensure the stable energy supply capacity of the first water source heat pump unit 10 to the user side, the opening degree of the fifth control valve 34 is greater than the opening degree of the third control valve. When it is necessary to send the circulating water into the second heat exchanger 18 from the return end of the energy supply end of the first water source heat pump unit 10, the third control valve 32 and the sixth control valve 35 are closed, and the third control valve 33 and the fifth control valve 34 are opened. When the second heat exchanger 18 is not needed, the third control valve 32 and the fourth control valve 33 are closed, and the fifth control valve 34 and the sixth control valve 35 are opened. The secondary side inlet end of the second heat exchanger 18 is connected to the No. 4 water tank 22, and the secondary side outlet end of the second heat exchanger 18 is connected to the No. 1 water tank 19; the circulating water at the energy supply end of the first water source heat pump unit 10 is heat exchanged with the water drawn from the No. 4 water tank 22, and then discharged to the No. 1 water tank 19 for energy storage, and then heat exchanged with the water in the water intake well 12 through the first heat exchanger 17, so as to stabilize the water source temperature entering the first water source heat pump unit 10.

[0031] In order to ensure that the fire water tank 11 provides a stable water supply to the fire pipeline, the third water pump 16 is connected to the No. 1 water tank 19, the No. 2 water tank 20, the No. 3 water tank 21, and the No. 4 water tank 22. The third water pump 16 delivers water in the No. 1 water tank 19 and / or the No. 2 water tank 20 and / or the No. 3 water tank 21 and / or the No. 4 water tank 22 into the fire pipeline, which does not affect the water supply of the fire water tank 11 to the fire pipeline after the partition.

[0032] The secondary side inlet of the second heat exchanger 18 is connected to the primary side outlet of the first heat exchanger 17 through the seventh pipe 36, and the secondary side outlet of the second heat exchanger 18 is connected to the No. 1 water tank 19. A second valve group for controlling the discharge fluid from the primary side of the first heat exchanger 17 to enter the secondary side of the second heat exchanger 18 or the No. 1 water tank 19 is installed at the primary side outlet of the first heat exchanger 17 and the secondary side inlet of the second heat exchanger 18, that is, a seventh control valve 37 installed on the seventh pipe 36, and an eighth control valve 38 installed on the pipe between the seventh pipe 36 and the No. 1 water tank 19. When the seventh control valve 37 is opened and the eighth control valve 38 is closed, the water in the primary side of the first heat exchanger 17 can be discharged into the secondary side of the second heat exchanger 18 for heat exchange. When the seventh control valve 37 is closed and the eighth control valve 38 is opened, the water on the primary side of the first heat exchanger 17 can directly enter the No. 1 water tank 19.

[0033] It also includes a second water source heat pump unit 39 and a third heat exchanger 40. The second water source heat pump unit 39 is connected to the secondary side of the first heat exchanger 17. The water source side of the second water source heat pump unit 39 and the water source side of the first water source heat pump unit 10 are transported by the same pipeline; the primary side of the third heat exchanger 40 is connected to the energy supply end of the second water source heat pump, and the fluid at the energy supply end of the second water source heat pump unit 39 flows through the primary side of the third heat exchanger 40 and flows back to the second water source heat pump unit 39. The specific connection method can also adopt the connection method between the primary side of the second heat exchanger 18 and the energy supply end of the first water source heat pump unit 10, which will not be elaborated here; the secondary side inlet end of the third heat exchanger 40 is connected to the No. 4 water tank 22 is connected, and can also be connected with the seventh pipeline 36 through the eighth pipeline 41. The secondary side outlet of the third heat exchanger 40 is connected with the No. 1 water tank 19, and can also be connected with the No. 1 water tank 19 through the ninth pipeline 42; the tenth pipeline 43 is connected between the seventh pipeline 36 and the ninth pipeline, the ninth control valve 44 is installed on the eighth pipeline 41, the tenth control valve 45 is installed on the ninth pipeline, and the eleventh control valve 46 is installed on the tenth pipeline; the seventh control valve 37, the ninth control valve 44, the tenth control valve 45, and the eleventh control valve 46 are used to realize that the secondary side of the second heat exchanger 18 and the secondary side of the third heat exchanger 40 are connected in series or in parallel. If the ninth control valve 44 and the eleventh control valve 46 are opened, and the seventh control valve 37 and the tenth control valve 45 are closed, the secondary side of the second heat exchanger 18 and the secondary side of the third heat exchanger 40 are connected in series; if the seventh control valve 37, the ninth control valve 44 and the tenth control valve 45 are opened, and the eleventh control valve 46 is closed, the secondary side of the second heat exchanger 18 and the secondary side of the third heat exchanger 40 are connected in parallel; when the water in the return water pool No. 1 19 needs to be at a lower temperature, the series connection can be adopted to extend the heat exchange path and time. When the temperature of the water in the return water pool No. 1 19 can be met by the second heat exchanger 18 or the third heat exchanger 40, the parallel connection is adopted, or the second heat exchanger 18 or the third heat exchanger 40 is enabled alone.

[0034] In some implementations, a water supply pipe 47 is connected to the first water pool 19, and the water supply pipe 47 is used to supply water to the fire water pool 11. For example, when the water in the fire water pool 11 is being used for fire fighting, it is necessary to supply water to the fire water pool 11 to ensure that the water source in the fire water pool 11 is sufficient, so as to open the water supply control valve 48 on the water supply pipe 47 to supply water to the fire water pool 11. A one-way valve 49 and a filter 50 are installed on the water supply pipe 47 to limit the backflow of water in the pipe.

[0035] In some implementations, the fire water tank 11 is a water storage cavity with a rectangular inner wall. The fire water tank 11 is divided into a No. 1 water tank 19, a No. 2 water tank 20, a No. 3 water tank 21, and a No. 4 water tank 22 by four partitions. Specifically, the No. 1 water tank 19 is separated from the No. 2 water tank 20 by a first partition 51, the No. 2 water tank 20 is separated from the No. 3 water tank 21 by a second partition 52, and the No. 3 water tank 21 is separated from the No. 4 water tank 22 by a third partition 53. The fourth water pool 22 is separated from the first water pool 19 by the fourth barrier 54; the first barrier 51, the second barrier 52, the third barrier 53, and the fourth barrier 54 are arranged in a cross shape in the fire water pool 11, that is, the first water pool 19 and the second water pool 20 are arranged adjacent to each other, the second water pool 20 and the third water pool 21 are arranged adjacent to each other, the third water pool 21 and the fourth water pool 22 are arranged adjacent to each other, and the fourth water pool 22 and the first water pool 19 are arranged adjacent to each other, and the barrier is a rectangular flat plate made of stainless steel metal sheet. In some specific uses, if the subsequent assembly and disassembly is not considered, the barrier can be fixed in the fire water pool 11 by welding.

[0036] In some implementations, in order to facilitate the installation and disassembly of the baffles, the first baffle, the second baffle, the third baffle, and the fourth baffle are detachably assembled in the fire water pool 11; an intermediate clamping column 55 is provided at a central position in the fire water pool 11 along the depth direction of the fire water pool 11, and a lower groove 56 is provided at a central position of the bottom wall of the fire water pool 11, and the lower end of the intermediate clamping column 55 is inserted into the lower groove 56, and the shape of the lower groove 56 is the same as the cross-sectional shape of the intermediate clamping column 55. After the lower end of the intermediate clamping column 55 is inserted into the lower groove 56, the lower groove 56 constrains the intermediate clamping column 55, and at the same time, a groove 56 is provided at a central position of the inner wall of the upper cover 57 of the fire water pool 11. An upper groove 58 is provided, and the inner wall contour of the upper groove 58, the inner wall contour of the lower groove 56, and the outer peripheral contour of the middle clamping column 55 are of the same shape and size. After the lower end face of the middle clamping column 55 is inserted into the lower groove 56, the lower end face is fitted with the groove bottom of the lower groove 56. After the upper end of the middle clamping column 55 is inserted into the upper groove 58, a gap is retained between the upper end face of the middle clamping column 55 and the groove bottom of the upper groove 58, and no contact is formed. Only the upper end outer wall of the middle clamping column 55 is fitted with the inner wall of the upper groove 58 to avoid fitting contact between the upper end face of the middle clamping column 55 and the groove bottom of the upper groove 58, which will generate a large fitting force and is not convenient for the later separation between the upper end of the middle clamping column 55 and the upper cover 57.

[0037] In some implementations, a cross-shaped slot body 59 is welded to the inner wall of the upper cover 57 of the fire water tank 11, and the slot body 59 forms a cross-shaped slot 60 for clamping the upper ends of the four barrier members, thereby effectively constraining the upper ends of the barrier members. The slot body 59 is lower than the skirt 61 around the upper cover 57, and the upper groove 58 is arranged at the bottom of the middle position of the cross-shaped slot 60.

[0038] In some implementations, the outer periphery of the middle clamping column 55 has four clamping surfaces 62, and the four clamping surfaces 62 are formed one-to-one facing the four inner walls of the fire water tank 11; the outer ends of the first barrier, the outer ends of the second barrier, the outer ends of the third barrier, and the outer ends of the fourth barrier correspond to the four inner walls of the fire water tank 11 and are detachably arranged, and the inner ends of the first barrier, the inner ends of the second barrier, the inner ends of the third barrier, and the inner ends of the fourth barrier correspond to the four clamping surfaces of the middle clamping column 55 and form a clamping connection. The barrier and the clamping surface of the middle clamping column 55 adopt a concave-convex docking method, such as forming a convex part on the end face of the barrier (the clamping surface of the middle clamping column), forming a concave part on the clamping surface of the middle clamping column 55 (the end face of the barrier), and the convex part and the concave part dock to form a connection.

[0039] In some implementations, the first barrier and the second barrier, the second barrier and the third barrier, the third barrier and the fourth barrier, and the fourth barrier and the first barrier are connected by L-shaped connecting blocks 63, respectively. The L-shaped connecting blocks 63 extend along the depth direction of the fire water tank 11 and are equipped with multiple connecting bolts 64 to form connections with the barrier, so as to achieve a detachable connection of the inner end of the barrier. The outer end of the barrier is connected to the inner wall of the fire water tank 11 by bolts through the I-shaped connecting blocks 65 on both sides, so as to achieve a detachable connection of the outer end of the barrier.

[0040] In some implementations, the No. 1 water pool 19 is connected to the No. 1 pipe 66, the No. 2 water pool 20 is connected to the No. 2 pipe 67, the No. 3 water pool 21 is connected to the No. 3 pipe 68, and the No. 4 water pool 22 is connected to the No. 4 pipe 69. The No. 1 pipe 66, the No. 2 pipe 67, the No. 3 pipe 68, and the No. 4 pipe 69 are connected to the inlet end of the third water pump 16, and are respectively equipped with a water outlet control valve 70. The outlet end of the third water pump 16 is connected to a high-level static pressure water tank 71, and the high-level static pressure water tank 71 is connected to the fire-fighting pipeline. Pipes No. 1 to No. 4 are respectively connected to the bottom of their respective water pools, wherein at least the water outlet control valve on the No. 4 pipe 69 is in a normally open state, and the other water outlet control valves can be opened when the third water pump 16 starts working, so as to ensure the stable water supply of the fire-fighting water pool 11 to the third water pump 16.

[0041] Water level sensors are respectively provided in the No. 1 water pool 19, the No. 2 water pool 20, the No. 3 water pool 21, and the No. 4 water pool 22 to monitor the water level heights in the four water pools so as to grasp the actual water levels in the water pools. The water level sensor corresponds to a minimum water level value, and the minimum water level value corresponds to the water in the fire water pool 11, which can ensure the normal use of fire water. When the water level value detected by the water level sensor is lower than the minimum water level value, water is added to the fire water pool 11. When the water level value of each sensor is the minimum water level value set in the four water pools, the fire water volume that should be matched with the fire-fighting place is guaranteed. The No. 1 water pool 19, the No. 2 water pool 20, the No. 3 water pool 21, the No. 4 water pool 22 and the water intake well 12 are also respectively provided with temperature sensors to monitor the water temperature at various locations.

[0042] In some implementations, the overflow ports 72 between adjacent barrier members are arranged in different sizes, such as the overflow port between the first barrier member and the second barrier member is larger than the overflow port between the second barrier member and the third barrier member, and the overflow port between the second barrier member and the third barrier member is smaller than the overflow port between the third barrier member and the fourth barrier member, so as to change the flow rate of water in adjacent pools, and the overflow port is arranged with an inclined port toward the bottom of the next-level pool, so as to increase the flow capacity of water in the next-level pool, and has a certain improvement ability for the mixing of water in the next-level pool.

[0043] Finally, it should be noted that the above embodiments are merely preferred embodiments of the present invention to illustrate the technical solution of the present invention, but are not intended to limit the technical solution, let alone the patent scope of the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some or all of the technical features may be replaced by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention. In addition, the direct or indirect application of the technical solution of the present invention in other related technical fields is also included in the patent protection scope of the present invention.

Claims

1. A water source heat pump system combined with a fire water tank energy storage comprises a first water source heat pump unit, a fire water tank, a water intake well, a water return well, a first water pump, a second water pump, a third water pump, a first heat exchanger, and a second heat exchanger, characterized in that: The fire water pool includes No. 1 pool, No. 2 pool, No. 3 pool and No. 4 pool. The water in No. 1 pool overflows toward No. 2 pool, the water in No. 2 pool overflows toward No. 3 pool and the water in No. 3 pool overflows toward No. 4 pool. The first water pump is connected between the first water source heat pump unit and the water intake well through a water intake pipeline to send water in the water intake well into the first water source heat pump unit; The primary inlet of the first heat exchanger is connected to the outlet of the second water pump, the inlet of the second water pump is connected to the No. 4 water tank, the primary outlet of the first heat exchanger is connected to the No. 1 water tank, the secondary inlet and the secondary outlet of the first heat exchanger are connected to the water intake pipeline, and the first valve group is installed on the water intake pipeline and the secondary inlet of the first heat exchanger to switch the groundwater in the water intake well to flow through the first heat exchanger and then enter the first water source heat pump unit or directly enter the first water source heat pump unit; The primary side of the second heat exchanger is connected to the energy supply end of the first water source heat pump unit, and the fluid at the energy supply end of the first water source heat pump unit flows back to the first water source heat pump unit through the primary side of the second heat exchanger; The secondary side inlet end of the second heat exchanger is connected to the No. 4 water tank, and the secondary side outlet end of the second heat exchanger is connected to the No. 1 water tank; The third water pump is connected with the No. 1 water tank, the No. 2 water tank, the No. 3 water tank and the No. 4 water tank, and the third water pump delivers the water in the No. 1 water tank and / or the No. 2 water tank and / or the No. 3 water tank and / or the No. 4 water tank into the fire-fighting pipeline.

2. The water source heat pump system combined with fire water tank energy storage as claimed in claim 1, characterized in that: The secondary side inlet of the second heat exchanger is connected to the primary side outlet of the first heat exchanger, and the secondary side outlet of the second heat exchanger is connected to the No. 1 water tank. A second valve group is installed at the primary side outlet of the first heat exchanger and the secondary side inlet of the second heat exchanger to control the discharge fluid of the primary side of the first heat exchanger to enter the secondary side of the second heat exchanger or the No. 1 water tank.

3. The water source heat pump system combined with fire water tank energy storage as claimed in claim 2 is characterized in that: It also includes a second water source heat pump unit and a third heat exchanger. The second water source heat pump unit is connected in parallel to the secondary side of the first heat exchanger. The primary side of the third heat exchanger is connected to the energy supply end of the second water source heat pump. The fluid at the energy supply end of the second water source heat pump unit flows through the primary side of the third heat exchanger and flows back to the second water source heat pump unit. The secondary side inlet end of the third heat exchanger is connected to the No. 4 water tank, and the secondary side outlet end of the third heat exchanger is connected to the No. 1 water tank.

4. The water source heat pump system combined with fire water tank energy storage as claimed in claim 1, characterized in that: The secondary side of the second heat exchanger and the secondary side of the third heat exchanger are connected in series or in parallel.

5. The water source heat pump system combined with fire water tank energy storage as claimed in claim 1, characterized in that: The fire water pool is divided into independent No. 1, No. 2, No. 3 and No. 4 water pools through four partitions; Water pool No. 1 is separated from water pool No. 2 by a first partition, water pool No. 2 is separated from water pool No. 3 by a second partition, water pool No. 3 is separated from water pool No. 4 by a third partition, and water pool No. 4 is separated from water pool No. 1 by a fourth partition; the first partition, the second partition, the third partition, and the fourth partition are arranged in a cross form in the fire water pool.

6. The water source heat pump system combined with fire water tank energy storage as claimed in claim 1, characterized in that: The first barrier, the second barrier, the third barrier and the fourth barrier are detachably assembled in the fire water pool; an intermediate clamping column is arranged at the central position in the fire water pool along the depth direction of the fire water pool, and the outer periphery of the intermediate clamping column has four clamping surfaces, and the four clamping surfaces are facing one by one with the four inner walls of the fire water pool; the outer ends of the first barrier, the second barrier, the third barrier and the fourth barrier correspond one by one to the four inner walls of the fire water pool and are detachably arranged, and the inner ends of the first barrier, the second barrier, the third barrier and the fourth barrier correspond one by one to the four clamping surfaces of the intermediate clamping column and form a clamping connection.

7. The water source heat pump system combined with fire water tank energy storage as claimed in claim 1, characterized in that: The first barrier member and the second barrier member, the second barrier member and the third barrier member, the third barrier member and the fourth barrier member, and the fourth barrier member and the first barrier member are connected respectively by L-shaped connecting blocks. The L-shaped connecting blocks extend along the depth direction of the fire water tank and are equipped with multiple connecting bolts to form connections with the barrier members.

8. The water source heat pump system combined with fire water tank energy storage as claimed in claim 1, characterized in that: Water tank No. 1 is connected to pipe No. 1, water tank No. 2 is connected to pipe No. 2, water tank No. 3 is connected to pipe No. 3, and water tank No. 4 is connected to pipe No.

4. Pipe No. 1, pipe No. 2, pipe No. 3, and pipe No. 4 are connected to the inlet end of the third water pump and are respectively equipped with a water outlet control valve. The outlet end connecting pipe of the third water pump is connected to a high-level static pressure water tank, and the high-level static pressure water tank is connected to the fire-fighting pipeline.

9. The water source heat pump system combined with fire water tank energy storage as claimed in claim 1, characterized in that: Water level sensors are provided in the No. 1 pool, the No. 2 pool, the No. 3 pool and the No. 4 pool respectively, and temperature sensors are also provided in the No. 1 pool, the No. 2 pool, the No. 3 pool, the No. 4 pool and the water intake well respectively.

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