Cooling water circulation device and water chilling unit

Abstract

The utility model provides a cooling water circulation device and a water chilling unit, and relates to the technical field of boiler equipment, the cooling water circulation device comprises a box body and a water injection pipe; a first inner cavity and a second inner cavity are formed in the box body, the first inner cavity is used for being communicated with a water inlet pipeline of an evaporator and a water outlet pipeline of heat exchange equipment, and the second inner cavity is used for being communicated with a water outlet pipeline of the evaporator and a water inlet pipeline of the heat exchange equipment; one end of the water injection pipe is communicated with the first inner cavity, the other end of the water injection pipe is used for being communicated with a tap water pipe network, and an adjusting valve is arranged on the water injection pipe. According to the cooling water circulating device, the cooling water adding process can be more convenient, and the water adding frequency can be better reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler equipment, in particular to a cooling water circulation device and a chiller. Background Art

[0002] The chiller is a commonly used device in the boiler system. It is usually connected to the heat exchange equipment such as the reheater or economizer in the boiler system. The cooling water cooled by the evaporator in the chiller flows to the heat exchange equipment, and then flows back to the evaporator after heat exchange in the heat exchange equipment to provide circulating cooling water for the heat exchange equipment.

[0003] In current chillers, the water inlet and outlet pipes of the evaporator are usually directly connected to the heat exchange equipment. When replenishing water in the pipe, one end of the pipe needs to be removed for adding water. The installation and disassembly process is cumbersome and the added water is easy to leak from the pipe, causing inconvenience in adding water. Utility Model Content

[0004] The problem solved by the utility model is: how to make it more convenient to add water to a chiller.

[0005] In order to solve the above problems, the utility model provides a cooling water circulation device, including a box body and a water injection pipe; a first inner cavity and a second inner cavity are formed in the box body, the first inner cavity is used to be connected with the water inlet pipe of the evaporator and the water outlet pipe of the heat exchange equipment respectively, and the second inner cavity is used to be connected with the water outlet pipe of the evaporator and the water inlet pipe of the heat exchange equipment respectively; one end of the water injection pipe is connected with the first inner cavity, and the other end is used to be connected with the tap water network, and a regulating valve is provided on the water injection pipe.

[0006] Optionally, the cooling water circulation device also includes a first partition and a second partition; the first partition is arranged in the box body in an up-and-down manner to divide the internal space of the box body into a first chamber and a second chamber distributed left and right; the second partition is horizontally arranged in the first chamber to divide the first chamber into an upper chamber and a lower chamber distributed up and down, and a connecting port connecting the lower chamber and the second chamber is provided on the first partition; the upper chamber constitutes the first inner chamber, and the lower chamber and the second chamber together constitute the second inner chamber.

[0007] Optionally, the first partition plate and / or the second partition plate are configured as insulation plates.

[0008] Optionally, a pressure valve is provided on the upper portion of the first partition, and two ends of the pressure valve are connected to the upper chamber and the second chamber respectively, and the pressure valve is used to adjust the pressure difference between the upper chamber and the second chamber.

[0009] Optionally, a connection port is provided at the top of the upper chamber; and the end of the water injection pipe is connected to the connection port.

[0010] Optionally, the second partition is movably arranged relative to the box body in an up-and-down direction so that the volume of the upper chamber can be adjusted.

[0011] Optionally, a guide rod extending up and down is fixedly provided on the first partition or the inner wall of the box body; and a guide hole that slides correspondingly with the guide rod is provided on the second partition.

[0012] The utility model also provides a chiller, comprising an evaporator, a compressor, a condenser, a first expansion valve and the cooling water circulation device as described above; the evaporator, the compressor, the condenser and the first expansion valve are connected end to end in sequence to form a circulation loop; the first inner cavity of the cooling water circulation device is connected to the water inlet pipe of the evaporator, and the second inner cavity of the cooling water circulation device is connected to the water outlet pipe of the evaporator.

[0013] Optionally, the water inlet pipeline is provided with a first water pump and a flow valve which are arranged in sequence in a direction away from the evaporator.

[0014] Optionally, a cooling tower is further included, wherein the water outlet of the cooling tower is connected to the water inlet of the condenser, the water inlet of the cooling tower is connected to the water outlet of the condenser, and the water replenishment port of the cooling tower is used to connect to the tap water network.

[0015] Compared with the prior art, the cooling water circulation device provided by the utility model has but is not limited to the following technical effects:

[0016] In the cooling water circulation device provided by the utility model, by forming a first inner cavity and a second inner cavity in the box body to facilitate water storage, the circulating water volume of the cooling water can be increased, which is conducive to reducing the frequency of water addition; by connecting one end of the water injection pipe to the first inner cavity and the other end to the tap water network, and providing a regulating valve on the water injection pipe, the regulating valve can be opened to connect the first inner cavity to the tap water network to achieve water replenishment, which is simple to operate and will not leak when adding water, making it more convenient to add water. In summary, the cooling water circulation device can not only make the cooling water adding process more convenient, but also be more conducive to reducing the frequency of water adding. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the cooling water circulation device of the embodiment of the utility model;

[0018] Figure 2 It is a schematic structural diagram of a water chiller according to an embodiment of the utility model.

[0019] Description of reference numerals:

[0020] 10-cooling water circulation device, 11-box, 111-first chamber, 1111-upper chamber, 1111a-connecting port, 1112-lower chamber, 112-second chamber, 12-water injection pipe, 121-regulating valve, 13-first partition, 131-connecting port, 132-pressure valve, 14-second partition, 15-guide rod, 20-evaporator, 21-water inlet pipe, 211-first water pump, 212-flow valve, 213-branch pipe, 2131-pressure relief valve, 22-water outlet pipe, 30-compressor, 31-solenoid valve, 32-second expansion valve, 40-condenser, 50-first expansion valve, 60-cooling tower, 61-second butterfly valve, 62-third water pump, 71-water outlet pipeline, 72-water inlet pipeline, 721-second water pump, 80-tap water network. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0022] In the description of the present invention, if there are terms such as "first", "second", or "third", they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In this way, the features defined as "first", "second", or "third" may explicitly or implicitly include at least one of the features. In addition, in the description of the present invention, if there are terms such as "embodiment" or "exemplarily", the description means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or implementation are included in at least one embodiment or implementation of the present invention. In the present invention, the schematic representation of the above terms does not necessarily refer to the same embodiment or implementation. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or implementations in a suitable manner.

[0023] In the description of the present invention, if there are terms such as "upper", "lower", "front", "back", "left" and "right", the directions or positional relationships indicated are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0024] In addition, in the description of the present invention, the Y axis in the accompanying drawings represents the horizontal direction and is designated as a left-right position, and the positive direction of the Y axis represents the left, and correspondingly, the reverse direction of the Y axis represents the right; the Z axis in the accompanying drawings represents the vertical direction, that is, the up-down position, and the positive direction of the Z axis represents the top, and correspondingly, the reverse direction of the Z axis represents the bottom. It should be noted that the aforementioned Y axis and Z axis are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] Please refer to Figure 1 The embodiment of the utility model provides a cooling water circulation device 10, including a box body 11 and a water injection pipe 12; a first inner cavity and a second inner cavity are formed in the box body 11, the first inner cavity is used to be connected with the water inlet pipe 21 of the evaporator 20 and the water outlet pipe 71 of the heat exchange device respectively, and the second inner cavity is used to be connected with the water outlet pipe 22 of the evaporator 20 and the water inlet pipe 72 of the heat exchange device respectively; one end of the water injection pipe 12 is connected with the first inner cavity, and the other end is used to be connected with the tap water network 80, and a regulating valve 121 is provided on the water injection pipe 12.

[0026] Specifically, the regulating valve 121 may be a first butterfly valve. Specifically, the heat exchange device is a heat exchange device used in a boiler system, and may be a reheater or an economizer.

[0027] It should be noted that the general working process of the cooling water circulation device 10 is as follows: the cooling water generated by the evaporator 20 will enter the second inner cavity through the water outlet pipe 22, and then enter the heat exchange device through the water inlet pipe 72 of the heat exchange device; after heat exchange in the heat exchange device, the cooling water will enter the first inner cavity through the water outlet pipe 71 of the heat exchange device, and then return to the evaporator 20 through the water inlet pipe 21 of the evaporator 20; when water replenishment is needed, the regulating valve 121 can be opened, and the water from the tap water network 80 can flow into the first inner cavity through the water injection pipe 12 to achieve water replenishment.

[0028] In this embodiment, by forming a first inner cavity and a second inner cavity in the box body 11 to facilitate water storage, the circulating water volume of the cooling water can be increased, which is conducive to reducing the frequency of adding water; by connecting one end of the water injection pipe 12 to the first inner cavity and the other end to the tap water network 80, and providing a regulating valve 121 on the water injection pipe 12, the regulating valve 121 can be opened to connect the first inner cavity to the tap water network 80 to achieve water replenishment, which is simple to operate and will not leak when adding water, making it more convenient to add water. In summary, the cooling water circulation device 10 can not only make the cooling water adding process more convenient, but also help reduce the frequency of adding water.

[0029] Optionally, see Figure 1The cooling water circulation device 10 also includes a first partition 13 and a second partition 14; the first partition 13 is arranged in the box body 11 in an up-and-down manner to divide the internal space of the box body 11 into a first chamber 111 and a second chamber 112 distributed left and right; the second partition 14 is arranged in the first chamber 111 in a horizontal manner to divide the first chamber 111 into an upper chamber 1111 and a lower chamber 1112 distributed up and down, and the first partition 13 is provided with a connecting port 131 connecting the lower chamber 1112 and the second chamber 112; the upper chamber 1111 constitutes the first inner chamber, and the lower chamber 1112 and the second chamber 112 together constitute the second inner chamber.

[0030] In this embodiment, a first partition 13 and a second partition 14 are arranged in the box body 11 to separate an upper chamber 1111, a lower chamber 1112 and a second chamber 112, and the upper chamber 1111 is the first inner chamber, and the lower chamber 1112 and the second chamber 112 together constitute the second inner chamber, so that there is a partition between the first inner chamber and the second inner chamber, and the two are not connected to each other, which can separate the water flow of the two inner chambers and avoid mixing; at the same time, the first partition 13 and the second partition 14 can support the inner wall of the box body 11 from the up and down directions and the horizontal direction respectively, which is beneficial to improve the structural stability of the box body 11 and ensure that the box body 11 is more stable when subjected to the impact of water flow.

[0031] Optionally, see Figure 1 The first partition plate 13 and / or the second partition plate 14 are configured as insulation plates.

[0032] Specifically, the material of the heat preservation plate can be stainless steel. Specifically, the material of the box body 11 can also be set to a heat preservation material such as stainless steel.

[0033] In this embodiment, by setting the first partition 13 and / or the second partition 14 as an insulation plate, heat loss can be reduced and heat exchange between the water in the first inner cavity and the second inner cavity can be avoided, so as to achieve a better insulation effect for the cooling water in the second inner cavity.

[0034] Optionally, see Figure 1 A pressure valve 132 is provided on the upper part of the first partition 13 , and the two ends of the pressure valve 132 are respectively connected to the upper chamber 1111 and the second chamber 112 , and the pressure valve 132 is used to adjust the pressure difference between the upper chamber 1111 and the second chamber 112 .

[0035] In this embodiment, a pressure valve 132 is provided on the upper part of the first partition 13. Thus, the pressure valve 132 can adjust the pressure difference between the upper chamber 1111 and the second chamber 112, that is, the pressure difference between the first inner chamber and the second inner chamber, to ensure a stable pressure difference between the first inner chamber and the second inner chamber, thereby ensuring the water pressure of the cooling water and facilitating the flow circulation of the cooling water.

[0036] Optionally, see Figure 1 A connection port 1111a is provided at the top of the upper chamber 1111; the end of the water injection pipe 12 is connected to the connection port 1111a.

[0037] In this embodiment, by connecting the end of the water injection pipe 12 to the connecting port 1111a, and the connecting port 1111a is located at the top of the upper chamber 1111, that is, the water injection pipe 12 injects water into the upper chamber 1111 through the top of the upper chamber 1111, the water injection efficiency is higher.

[0038] Optionally, see Figure 1 The second partition plate 14 is movably arranged in the up and down direction relative to the box body 11 so that the volume of the upper chamber 1111 can be adjusted.

[0039] In this embodiment, the second partition 14 is moved up and down to adjust the volume of the upper chamber 1111. Thus, the volume of the upper chamber 1111 can be changed by moving the second partition 14, thereby changing the water storage capacity of the first inner cavity to correspond to different water replenishment amounts and meet different water replenishment needs.

[0040] Optionally, see Figure 1 A guide rod 15 extending up and down is fixedly provided on the first partition plate 13 or the inner wall of the box body 11; a guide hole corresponding to and slidingly matched with the guide rod 15 is provided on the second partition plate 14.

[0041] It should be noted that a sealing ring can be sleeved on the side of the second partition 14, and a sealing layer can be covered on the peripheral wall of the guide rod 15, for example, the sealing ring and the sealing layer can be made of silicone material, thereby, the sealing ring can ensure the sealing between the second partition 14 and the first partition 13 and the inner wall of the box body 11, and the sealing layer can ensure the sealing between the guide rod 15 and the guide hole, thereby ensuring the sealing isolation between the upper chamber 1111 and the lower chamber 1112. In addition, it should be noted that in order to be able to control the up and down movement of the second partition 14 outside the box body 11, a linear motor arranged up and down can be installed on the outer wall of the box body 11, and a first magnetic block can be set at the output end of the linear motor, and a second magnetic block that cooperates with the first magnetic block can be set on the second partition 14. Therefore, when the linear motor drives the first magnetic block to move up and down, the magnetic attraction of the first magnetic block to the second magnetic block can drive the second partition 14 to move up and down relative to the box body 11.

[0042] In this embodiment, a guide rod 15 is provided on the first partition 13 or the inner wall of the box body 11, and a guide hole slidably fitted with the guide rod 15 is provided on the second partition 14. In this way, when the second partition 14 moves up and down relative to the box body 11, the guide hole also slides up and down along the guide rod 15, thereby ensuring that the second partition 14 moves up and down smoothly without swinging.

[0043] Please refer to Figure 1 and Figure 2 The embodiment of the utility model also provides a chiller, including an evaporator 20, a compressor 30, a condenser 40, a first expansion valve 50 and the cooling water circulation device 10 as described above; the evaporator 20, the compressor 30, the condenser 40 and the first expansion valve 50 are connected end to end in sequence to form a circulation loop; the first inner cavity of the cooling water circulation device 10 is connected to the water inlet pipe 21 of the evaporator 20, and the second inner cavity of the cooling water circulation device 10 is connected to the water outlet pipe 22 of the evaporator 20.

[0044] Specifically, the compressor 30 may be a screw compressor. Figure 2 A solenoid valve 31 and a second expansion valve 32 may be provided between the compressor 30 and the first expansion valve 50. When the exhaust temperature of the compressor 30 is too high, the solenoid valve 31 is opened, and the refrigerant discharged from the first expansion valve 50 is injected into the compressor 30 through the solenoid valve 31 and the second expansion valve 32 to reduce the exhaust temperature of the compressor 30.

[0045] In this embodiment, since the chiller adopts all the technical solutions of all the embodiments of the cooling water circulation device 10, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0046] Optionally, see Figure 2 The water inlet pipe 21 is provided with a first water pump 211 and a flow valve 212 which are arranged in sequence in a direction away from the evaporator 20 .

[0047] For details, please refer to Figure 1 and Figure 2 A branch pipe 213 can also be set on the water inlet pipe 21. One end of the branch pipe 213 is connected to the water inlet pipe 21, and the other end is connected to the first inner cavity. A pressure relief valve 2131 is set on the branch pipe 213. The pressure relief valve 2131 can be used to return water in the water inlet pipe 21 to the first inner cavity when necessary to achieve pressure relief, thereby ensuring that the circulation process of cooling water is safe and stable.

[0048] In this embodiment, a flow valve 212 is provided on the water inlet pipe 21, so that the flow valve 212 can be adjusted in time according to the cooling temperature of the evaporator 20, ensuring that the water flow entering the evaporator 20 from the first inner cavity can be quickly cooled. A first water pump 211 is provided on the water inlet pipe 21 to increase the pressure of the water flow in the water inlet pipe 21, ensuring that the water flow in the water inlet pipe 21 can quickly enter the evaporator 20.

[0049] Optionally, see Figure 2 The water inlet pipeline 72 of the heat exchange device is provided with a second water pump 721, and the second water pump 721 can control the water pressure in the water inlet pipeline 72 to provide cooling water to the heat exchange device.

[0050] Optionally, see Figure 2 The chiller also includes a cooling tower 60, a water outlet of the cooling tower 60 is connected to a water inlet of the condenser 40, a water inlet of the cooling tower 60 is connected to a water outlet of the condenser 40, and a water replenishment port of the cooling tower 60 is used to communicate with a tap water network 80.

[0051] For details, please refer to Figure 2 A second butterfly valve 61 may be provided between the water supply port of the cooling tower 60 and the tap water network 80. The second butterfly valve 61 may be opened and closed to control the water supply to the cooling tower 60. Figure 2 A third water pump 62 may be provided between the water inlet of the cooling tower 60 and the water outlet of the condenser 40 to pressurize the water flow between the water inlet of the cooling tower 60 and the water outlet of the condenser 40 .

[0052] In this embodiment, the water replenishment port of the cooling tower 60 is connected to the tap water network 80 so that water can be replenished into the cooling tower 60 in time when there is a shortage of water in the cooling tower 60 .

[0053] Although the utility model is disclosed as above, the protection scope of the utility model is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the utility model, and these changes and modifications will fall within the protection scope of the utility model.

Claims

1. A cooling water circulation device (10), characterized in that: The invention comprises a housing (11) and a water injection pipe (12); a first inner cavity and a second inner cavity are formed in the housing (11); the first inner cavity is used to be respectively connected to a water inlet pipe (21) of an evaporator (20) and a water outlet pipe (71) of a heat exchange device; the second inner cavity is used to be respectively connected to a water outlet pipe (22) of the evaporator (20) and a water inlet pipe (72) of the heat exchange device; one end of the water injection pipe (12) is connected to the first inner cavity, and the other end is used to be connected to a tap water network (80); a regulating valve (121) is provided on the water injection pipe (12).

2. The cooling water circulation device (10) according to claim 1, characterized in that: The cooling water circulation device (10) further comprises a first partition (13) and a second partition (14); the first partition (13) is arranged in an up-and-down manner in the box body (11) to divide the internal space of the box body (11) into a first chamber (111) and a second chamber (112) distributed left and right; the second partition (14) is arranged in a horizontal manner in the first chamber (111) to divide the first chamber (111) into an upper chamber (1111) and a lower chamber (1112) distributed up and down, and the first partition (13) is provided with a connecting port (131) connecting the lower chamber (1112) and the second chamber (112); the upper chamber (1111) constitutes the first inner chamber, and the lower chamber (1112) and the second chamber (112) together constitute the second inner chamber.

3. The cooling water circulation device (10) according to claim 2, characterized in that: The first partition plate (13) and / or the second partition plate (14) are configured as heat-insulating plates.

4. The cooling water circulation device (10) according to claim 2, characterized in that: A pressure valve (132) is provided on the upper portion of the first partition plate (13), and two ends of the pressure valve (132) are respectively connected to the upper chamber (1111) and the second chamber (112), and the pressure valve (132) is used to adjust the pressure difference between the upper chamber (1111) and the second chamber (112).

5. The cooling water circulation device (10) according to claim 2, characterized in that: A connection port (1111a) is provided at the top of the upper chamber (1111); the end of the water injection pipe (12) is connected to the connection port (1111a).

6. The cooling water circulation device (10) according to claim 2, characterized in that: The second partition plate (14) is movably arranged in the up and down directions relative to the box body (11), so that the volume of the upper chamber (1111) can be adjusted.

7. The cooling water circulation device (10) according to claim 6, characterized in that: A guide rod (15) extending up and down is fixedly provided on the first partition (13) or the inner wall of the box body (11); and a guide hole corresponding to and slidingly cooperating with the guide rod (15) is provided on the second partition (14).

8. A chiller, characterized in that: It comprises an evaporator (20), a compressor (30), a condenser (40), a first expansion valve (50) and a cooling water circulation device (10) as claimed in any one of claims 1 to 7; the evaporator (20), the compressor (30), the condenser (40) and the first expansion valve (50) are connected end to end in sequence to form a circulation loop; the first inner cavity of the cooling water circulation device (10) is connected to the water inlet pipe (21) of the evaporator (20), and the second inner cavity of the cooling water circulation device (10) is connected to the water outlet pipe (22) of the evaporator (20).

9. The water chiller according to claim 8, characterized in that: The water inlet pipeline (21) is provided with a first water pump (211) and a flow valve (212) which are arranged in sequence in a direction away from the evaporator (20).

10. The chiller according to claim 8, characterized in that: It also includes a cooling tower (60), the water outlet of the cooling tower (60) is connected to the water inlet of the condenser (40), the water inlet of the cooling tower (60) is connected to the water outlet of the condenser (40), and the water replenishment port of the cooling tower (60) is used to communicate with the tap water network (80).

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