Water distribution system

Abstract

The utility model relates to the technical field of pharmaceutical equipment, in particular to a water distribution system which comprises a heat exchanger, a water distribution device, a water distribution device and a water distribution device, and the heat exchanger comprises a liquid inlet, a liquid outlet, a first connector and a second connector; the refrigerant supply pipe is communicated with the first connector; the heating medium supply pipe is communicated with the second connecting port; the adjusting valve is provided with an inlet and an outlet, the inlet is communicated with the heating medium supply pipe, and the outlet is communicated with the second connector; one end of the branch pipe is communicated with the inlet, and the other end is communicated with the second connector; a refrigerant supplied by the refrigerant supply pipe and a heating medium supplied by the heating medium supply pipe can flow through the adjusting valve in the same direction. The water distribution system can flexibly and accurately adjust the flow of a refrigerant or a heating medium, in the temperature adjusting process, the refrigerant or the heating medium uses the same adjusting valve, cost control is facilitated, the direction of the heating medium or the refrigerant flowing through the adjusting valve is always kept in the same direction, the direction of the adjusting valve does not need to be switched at high frequency, and cost is saved. Therefore, the service life of the regulating valve is effectively ensured.

Description

Technical Field

[0001] This application relates to the field of pharmaceutical equipment technology, and in particular to a water distribution system. Background Technology

[0002] Currently, conventional purified water or water for injection systems require maintaining a certain temperature during daily operation. Purified water systems are maintained at 25°C, while water for injection systems are kept at or above 70°C for circulation. Regular disinfection and sterilization are also necessary. Purified water undergoes pasteurization by circulating at 80°C for at least one hour, while water for injection undergoes superheated water sterilization by circulating at 121°C for at least 0.5 hours. After disinfection and sterilization, the water is cooled before discharge. Precise temperature control is crucial for all these conditions. This control primarily involves introducing cold and hot media into the heat exchangers within the system to regulate temperature. Accurate temperature control depends on precisely controlling the flow rates of these media. To ensure efficient heat exchange, conventional heat exchangers have opposite flow directions for the cold and hot media: cold media enters from the bottom and exits from the top, while hot media enters from the top and exits from the bottom.

[0003] Traditional water distribution systems typically employ the following methods:

[0004] (a) Both the cold and hot medium pipelines of the heat exchanger are equipped with regulating valves, which results in high initial investment and later operating costs.

[0005] (ii) The heat exchanger heat medium pipeline is equipped with a regulating valve, but the refrigerant pipeline is not equipped with a regulating valve. In this form, the heat medium can be precisely controlled in terms of flow rate, but the refrigerant cannot be precisely controlled in terms of flow rate due to the use of a switch valve. The system temperature fluctuates greatly, which may cause the system operating temperature to be unreliable, and the disinfection and sterilization process to take too long or even fail to be achieved.

[0006] (iii) Both the cold and hot medium pipelines of the heat exchanger are equipped with regulating valves. The cold and hot mediums flow in opposite directions through the regulating valves. This method can achieve precise control of the cold and hot mediums in the short term, but long-term use will cause damage to the regulating valves and the risk of leakage of the cold and hot mediums. Utility Model Content

[0007] The purpose of this application is to provide a water distribution system that can, to some extent, solve the technical problems of large temperature fluctuations, easy damage to regulating valves, and leakage of cold and hot media in existing water distribution systems.

[0008] This application provides a water distribution system, including: a heat exchanger, the heat exchanger including a liquid inlet, a liquid outlet, a first connection port and a second connection port;

[0009] A refrigerant supply pipe, wherein the refrigerant supply pipe is connected to the first connection port;

[0010] A heat medium supply pipe, wherein the heat medium supply pipe is connected to the second connection port;

[0011] A regulating valve, wherein the regulating valve is provided with an inlet and an outlet, the inlet being connected to the heat medium supply pipe, and the outlet being connected to the second connection port;

[0012] A branch pipe, one end of which is connected to the inlet and the other end of which is connected to the second connection port;

[0013] The refrigerant supplied by the refrigerant supply pipe and the heat supplied by the heat supply pipe can flow through the regulating valve in the same direction.

[0014] In the above technical solution, the water distribution system further includes:

[0015] A first check valve is disposed between the outlet and the second connection port;

[0016] A second check valve is disposed on the branch pipe.

[0017] In any of the above technical solutions, the first check valve has a first inlet and a first outlet, and the outlet of the regulating valve is connected to the first inlet;

[0018] The second check valve has a second inlet and a second outlet, the second outlet being connected to the inlet of the regulating valve.

[0019] In any of the above technical solutions, the water distribution system further includes:

[0020] A first connecting pipe is disposed at the first connecting port, and the refrigerant supply pipe is connected to the first connecting pipe;

[0021] The second connecting pipe is disposed at the second connecting port, and the heat medium supply pipe is connected to the second connecting pipe; one end of the branch pipe is connected to the heat medium supply pipe, and the other end of the branch pipe is connected to the second connecting pipe.

[0022] In any of the above technical solutions, the water distribution system further includes:

[0023] A refrigerant outlet pipe, which is connected to the second connecting pipe;

[0024] A drain pipe, which is connected to the first connecting pipe;

[0025] A drain valve is provided on the drain pipe.

[0026] In any of the above technical solutions, the water distribution system further includes:

[0027] A first control valve is disposed on the refrigerant supply pipe;

[0028] The second control valve is located in the heat medium supply pipe.

[0029] In any of the above technical solutions, the water distribution system further includes a third control valve, which is disposed on the refrigerant outlet pipe.

[0030] In any of the above technical solutions, the water distribution system further includes a temperature transmitter connected to the regulating valve.

[0031] In any of the above technical solutions, the water distribution system further includes:

[0032] A liquid supply pipe, which is connected to the liquid inlet;

[0033] A liquid outlet pipe, which is connected to the liquid outlet;

[0034] The supply pipe and the outlet pipe each have a pipe slope.

[0035] In any of the above technical solutions, the regulating valve is further described as a pneumatic proportional regulating valve.

[0036] Compared with the prior art, the beneficial effects of this application are as follows:

[0037] The water distribution system provided in this application includes: a heat exchanger, which includes an inlet, an outlet, a first connection port, and a second connection port; a refrigerant supply pipe, which is connected to the first connection port; a heat supply pipe, which is connected to the second connection port; a regulating valve, which has an inlet and an outlet, the inlet of which is connected to the heat supply pipe, and the outlet of which is connected to the second connection port; and a branch pipe, one end of which is connected to the inlet, and the other end of which is connected to the second connection port; the refrigerant supplied by the refrigerant supply pipe and the heat supply pipe supplied by the heat supply pipe can flow through the regulating valve in the same direction.

[0038] This water distribution system can flexibly and accurately adjust the flow rate of refrigerant or heat medium, thereby improving the accuracy of temperature regulation of the entire system. Furthermore, during temperature regulation, the same regulating valve is used for both refrigerant and heat medium, which helps control costs. The direction of flow of heat medium or refrigerant through the regulating valve is always kept in the same direction, eliminating the need for high-frequency switching of the regulating valve direction. This effectively ensures the service life of the regulating valve and reduces the risk of refrigerant or heat medium leakage due to valve damage. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0040] Figure 1 This is a schematic diagram of the structure of a water distribution system provided in an embodiment of this application.

[0041] Figure label:

[0042] 1-Heat exchanger, 101-Inlet, 102-Outlet, 103-First connection port, 104-Second connection port, 2-Refrigerant supply pipe, 3-Heat supply pipe, 4-Regulating valve, 401-Inlet, 402-Outlet, 5-Branch pipe, 6-First connection pipe, 7-Second connection pipe, 8-First check valve, 9-Second check valve, 10-First control valve, 11-Second control valve, 12-Refrigerant outlet pipe, 13-Third control valve, 14-Drain pipe, 15-Supply pipe, 16-Outlet pipe, 17-Temperature transmitter, 18-Steam trap. Detailed Implementation

[0043] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.

[0044] The components of the embodiments of this application described and shown in the accompanying drawings can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of this application provided in the drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application.

[0045] Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0046] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0047] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0048] The following reference Figure 1 This application describes a water distribution system based on embodiments thereof.

[0049] See Figure 1 As shown, an embodiment of this application provides a water distribution system, which includes: a heat exchanger 1, a refrigerant supply pipe 2, a heat medium supply pipe 3, a regulating valve 4, and a branch pipe 5. The heat exchanger 1 includes four ports: an inlet 101, an outlet 102, a first connection port 103, and a second connection port 104. The inlet 101 is used to introduce a liquid to be regulated into the heat exchanger 1. In this embodiment, the liquid to be regulated is specifically purified water or water for injection, hereinafter referred to as liquid. The refrigerant supply pipe 2 is connected to the first connection port 103 to supply refrigerant to the heat exchanger 1. In this embodiment, the refrigerant can specifically be chilled water. The heat medium supply pipe 3 is connected to the second connection port 104 to supply heat medium to the heat exchanger 1. In this embodiment, the heat medium can specifically be industrial steam. This allows the liquid to exchange heat with the heat medium or refrigerant in the heat exchanger 1, thereby regulating the temperature of the liquid. The regulating valve 4 has an inlet 401 and an outlet 402. Preferably, the regulating valve 4 is installed on the heat medium supply pipe 3, with the inlet 401 of the regulating valve 4 connected to the heat medium supply pipe 3 and the outlet 402 of the regulating valve 4 connected to the second connection port 104. One end of the branch pipe 5 is connected to the second connection port 104, and the other end of the branch pipe 5 is connected to the heat medium supply pipe 3. The connection position of the branch pipe 5 and the heat medium supply pipe 3 is located on the inlet 401 side of the regulating valve 4, and the connection position of the branch pipe 5 and the second connection pipe 7 is located on the outlet 402 side of the regulating valve 4.

[0050] Preferably, the regulating valve 4 is a pneumatic proportional regulating valve.

[0051] Specifically, this water distribution system also includes a first connecting pipe 6 and a second connecting pipe 7. The first connecting pipe 6 is located at a first connecting port 103, and the second connecting pipe 7 is located at a second connecting port 104. One end of the refrigerant supply pipe 2 is connected to a cold source, and the other end of the refrigerant supply pipe 2 is connected to the first connecting pipe 6. One end of the heat supply pipe 3 is connected to a heat source, and the other end of the heat supply pipe 3 is connected to the second connecting pipe 7. One end of the branch pipe 5 is connected to the heat supply pipe 3, and the other end of the branch pipe 5 is connected to the second connecting pipe 7.

[0052] This water distribution system also includes a first check valve 8 and a second check valve 9. The first check valve 8 is disposed on the second connecting pipe 7 and is located between the outlet 402 of the regulating valve 4 and the connection point between the branch pipe 5 and the second connecting pipe 7. The first check valve 8 defines a first flow direction, which is from the outlet 402 of the regulating valve 4 to the second connecting port 104. The second check valve 9 is disposed on the branch pipe 5 and defines a second flow direction, which is from the second connecting port 104 to the inlet 401 of the regulating valve 4. Specifically, the first check valve 8 has a first inlet and a first outlet. The liquid outlet 102 of the heat exchanger 1 is connected to the first inlet, and the first outlet is connected to the second connection port 104 of the heat exchanger 1. The second check valve 9 has a second inlet and a second outlet. The second inlet is connected to the second connection port 104 through the second connecting pipe 7, and the second outlet is connected to the inlet 401 of the regulating valve 4. This ensures that although the flow directions of the first check valve 8 and the second check valve 9 are opposite, the flow direction of the medium in the first check valve 8 when it flows through the regulating valve 4 is the same as that of the medium in the second check valve 9 when it flows through the regulating valve 4. In other words, the flow direction of the regulating valve 4 is the same and unchanged regardless of the type of medium flowing through it. This effectively reduces the risk of damage to the regulating valve 4 due to repeated switching of direction, which affects its lifespan.

[0053] Furthermore, this water distribution system also includes a first control valve 10 and a second control valve 11. The first control valve 10 is installed on the refrigerant supply pipe 2 and can control the on / off state of the refrigerant supply pipe 2. The second control valve 11 is installed on the heat supply pipe 3 and can control the on / off state of the heat supply pipe 3.

[0054] Furthermore, this water distribution system also includes a refrigerant outlet pipe 12. One end of the refrigerant outlet pipe 12 is connected to the second connecting pipe 7, and the other end of the refrigerant outlet pipe 12 is connected to the storage tank. The refrigerant that flows into the heat exchanger 1 and participates in heat exchange flows out through the second connecting port 104 of the heat exchanger 1 and then flows out through the refrigerant outlet pipe 12. Preferably, the refrigerant outlet pipe 12 is equipped with a third control valve 13, which can control the opening and closing of the refrigerant outlet pipe 12.

[0055] Preferably, the first control valve 10, the second control valve 11 and the third control valve 13 are all pneumatic angle seat valves, which have the characteristics of sensitive response and accurate action. They can be used in conjunction with solenoid valves to accurately control the fluid flow rate using pneumatic control.

[0056] Furthermore, the water distribution system also includes a drain pipe 14, one end of which is connected to the first connecting pipe 6, and the other end of which can be connected to another storage tank. After the heat medium participates in heat exchange in the heat exchanger 1, condensate will be generated. The condensate can flow out through the drain pipe 14. Furthermore, a steam trap 18 is provided on the drain pipe 14, which has the function of preventing steam and draining water.

[0057] Furthermore, this water distribution system also includes a liquid supply pipe 15 and a liquid outlet pipe 16. The liquid supply pipe 15 is connected to the liquid inlet 101 and is used to supply liquid into the heat exchanger 1, so that the liquid exchanges heat with the heat medium or cold medium in the heat exchanger 1. The liquid outlet pipe 16 is connected to the liquid outlet 102. After the liquid has participated in heat exchange in the heat exchanger 1, it flows out through the liquid outlet 102 and the liquid outlet pipe 16 and flows to the next process step.

[0058] Along the direction of liquid flow, both the supply pipe 15 and the outlet pipe 16 form a pipe slope. Preferably, the pipe slope of the supply pipe 15 and the pipe slope of the outlet pipe 16 are both greater than or equal to 1%, preferably 1%, which can prevent liquid accumulation in the supply pipe 15 and / or the outlet pipe 16.

[0059] Furthermore, this water distribution system also includes a temperature transmitter 17. Preferably, the temperature transmitter 17 is installed on the outlet pipe 16 and is located near the outlet port 102 of the heat exchanger 1. The temperature transmitter 17 is electrically or communicatively connected to the regulating valve 4 so that the temperature transmitter 17 can be linked with the regulating valve 4. The opening of the regulating valve 4 can be adjusted according to the temperature displayed by the temperature transmitter 17, thereby adjusting the flow rate of the refrigerant or heat medium, and thus adjusting the heat exchange efficiency and effect on the liquid, thereby achieving temperature regulation of the liquid.

[0060] The water distribution system provided in this application, the purified water or water for injection system flows from the low end of heat exchanger 1, flows out from the high end of heat exchanger 1, and circulates through temperature transmitter 17.

[0061] When the water distribution system needs to be heated, the heat medium sequentially passes through the second control valve 11, regulating valve 4, first check valve 8, and heat exchanger 1 to heat the system. Regulating valve 4 is linked to the temperature transmitter 17 at the outlet 402 of heat exchanger 1. By adjusting the opening of regulating valve 4, the flow rate of the heat medium is controlled, thereby achieving precise temperature control. Condensate generated during the heating process is discharged through steam trap 18.

[0062] When the water distribution system needs to be cooled, the refrigerant passes sequentially through the first open control valve 10, heat exchanger 1, second check valve 9, regulating valve 4, and the third open control valve 13 to cool the system. The regulating valve 4 is linked to the temperature transmitter 17 at the outlet 402 of heat exchanger 1. By adjusting the opening of the regulating valve 4, the amount of refrigerant supplied is controlled, thereby achieving precise temperature control.

[0063] In summary, this water distribution system can flexibly and accurately adjust the flow rate of refrigerant or heat medium, thereby improving the accuracy of temperature regulation of the entire system. Furthermore, during temperature regulation, the same regulating valve 4 is used for both refrigerant and heat medium, which helps control costs. Moreover, the direction of flow of heat medium or refrigerant through regulating valve 4 always remains the same, eliminating the need for high-frequency switching of the direction of regulating valve 4. This effectively ensures the service life of regulating valve 4 and reduces the risk of refrigerant or heat medium leakage due to damage to regulating valve 4.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A water distribution system, characterized in that, include: A heat exchanger, comprising an inlet, an outlet, a first connection port, and a second connection port; A refrigerant supply pipe, wherein the refrigerant supply pipe is connected to the first connection port; A heat medium supply pipe, wherein the heat medium supply pipe is connected to the second connection port; A regulating valve, wherein the regulating valve is provided with an inlet and an outlet, the inlet being connected to the heat medium supply pipe, and the outlet being connected to the second connection port; A branch pipe, one end of which is connected to the inlet and the other end of which is connected to the second connection port; The refrigerant supplied by the refrigerant supply pipe and the heat supplied by the heat supply pipe can flow through the regulating valve in the same direction.

2. The water distribution system according to claim 1, characterized in that, The water distribution system also includes: A first check valve is disposed between the outlet and the second connection port; A second check valve is disposed on the branch pipe.

3. The water distribution system according to claim 2, characterized in that, The first check valve has a first inlet and a first outlet, and the outlet of the regulating valve is connected to the first inlet; The second check valve has a second inlet and a second outlet, the second outlet being connected to the inlet of the regulating valve.

4. The water distribution system according to claim 1, characterized in that, The water distribution system also includes: A first connecting pipe is disposed at the first connecting port, and the refrigerant supply pipe is connected to the first connecting pipe; The second connecting pipe is disposed at the second connecting port, and the heat medium supply pipe is connected to the second connecting pipe; one end of the branch pipe is connected to the heat medium supply pipe, and the other end of the branch pipe is connected to the second connecting pipe.

5. The water distribution system according to claim 4, characterized in that, The water distribution system also includes: A refrigerant outlet pipe, which is connected to the second connecting pipe; A drain pipe, which is connected to the first connecting pipe; A drain valve is provided on the drain pipe.

6. The water distribution system according to claim 1, characterized in that, The water distribution system also includes: A first control valve is disposed on the refrigerant supply pipe; The second control valve is located in the heat medium supply pipe.

7. The water distribution system according to claim 5, characterized in that, The water distribution system also includes a third control valve, which is located on the refrigerant outlet pipe.

8. The water distribution system according to claim 1, characterized in that, The water distribution system also includes a temperature transmitter, which is connected to the regulating valve.

9. The water distribution system according to claim 1, characterized in that, The water distribution system also includes: A liquid supply pipe, which is connected to the liquid inlet; A liquid outlet pipe, which is connected to the liquid outlet; The supply pipe and the outlet pipe each have a pipe slope.

10. The water distribution system according to any one of claims 1 to 9, characterized in that, The regulating valve is a pneumatic proportional regulating valve.

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