Multi-use point cooling device for water for injection

Abstract

The utility model relates to an injection water multi-use point cooling device which comprises a main pipe used for circulating injection water, a chilled water supply pipe, a chilled water return pipe and a heat exchange pipe, a cooling passage and a heat exchange passage are arranged in the heat exchange pipe, the cooling passage is arranged between the chilled water supply pipe and the chilled water return pipe in a communicating mode, and the heat exchange passage is communicated with the chilled water supply pipe. An inlet of the heat exchange channel is arranged on the main pipe in a communicating mode, a first branch pipe stop valve is arranged between the inlet of the heat exchange channel and the main pipe in a communicating mode, a second branch pipe is arranged on an outlet of the heat exchange channel in a communicating mode, a first water using pipe is arranged on the second branch pipe in a communicating mode, and a first water using stop valve is arranged on the first water using pipe. A fourth branch pipe stop valve is further arranged on the second branch pipe, and the end, away from the second branch pipe, of the fourth branch pipe stop valve communicates with the main pipe. The method has the effects of reducing energy loss and improving economic benefits.

Description

Technical Field

[0001] The present application relates to the technical field of water for injection, and in particular to a multi-point cooling device for water for injection. Background Art

[0002] Water for injection refers to water that meets the requirements of the Chinese Pharmacopoeia Water for Injection. Water for injection is water obtained by distillation of distilled water or deionized water, so it is also called double distilled water. The preparation, storage and distribution of water for injection should prevent the growth and contamination of microorganisms. The materials used for storage tanks and delivery pipelines should be non-toxic and corrosion-resistant. The storage of water for injection can be carried out by insulation above 80℃, insulation circulation above 70℃ or storage below 4℃.

[0003] Due to the needs of process production, such as water for batching, cleaning and other production process water, some water points in the injection water system need to be cooled. In order to ensure the cleanliness of the injection water, a heat exchanger is generally used to cool the injection water. After the water is used at the water point, in order to prevent microbial contamination, pure steam is required to intermittently sterilize the heat exchanger and downstream pipelines.

[0004] Regarding the above-mentioned related technologies, the sterilization method of introducing pure steam into the heat exchanger and the downstream pipeline requires the installation of a pure steam pipeline, which is relatively cumbersome and has a certain impact on the material and connection method of the heat exchanger and the downstream pipeline. It has the defects of high energy consumption and low economic benefits. Summary of the invention

[0005] In order to reduce energy loss and improve economic benefits, the present application provides a multi-point cooling device for injection water.

[0006] The multi-point cooling device for water for injection provided in this application adopts the following technical solution:

[0007] A multi-point cooling device for water for injection comprises a main pipe for circulating water for injection, a chilled water supply pipe and a chilled water return pipe, and also comprises a heat exchange pipe for quickly cooling the water for injection in the main pipe, wherein a cooling passage and a heat exchange passage for heat exchange are arranged in the heat exchange pipe, the cooling passage is connected and arranged between the chilled water supply pipe and the chilled water return pipe, a freezing stop valve 1 is arranged between the chilled water supply pipe and the cooling passage, the heat exchange passage inlet is connected and arranged on the main pipe, a branch pipe stop valve 1 is connected and arranged between the heat exchange passage inlet and the main pipe, a branch pipe 2 is connected and arranged on the heat exchange passage outlet, a water pipe 1 is connected and arranged on the branch pipe 2, a water pipe 1 is arranged on the water pipe 1, a branch pipe stop valve 4 is also arranged on the branch pipe 2, and the end of the branch pipe stop valve 4 away from the branch pipe 2 is connected to the main pipe.

[0008] By adopting the above technical solution, in order to ensure the cleanliness of the injection water when taking water, the outlet of the water pipe 1 needs to be set in a clean room. When water is needed, first open the freezing stop valve 1, the cooling passage is filled with freezing water, open the branch pipe stop valve 1, the injection water in the main pipe enters the heat exchange passage of the heat exchange pipe through the branch pipe 1, and exchanges heat with the freezing water in the cooling passage, thereby realizing the rapid cooling of the injection water. Then open the branch pipe stop valve 1, and the injection water after cooling flows out from the water pipe 1. When the water is finished, close the branch pipe stop valve 1, open the branch pipe stop valve 4, the high-temperature injection water in the main pipe continues to flow through the heat exchange passage of the heat exchange pipe and the branch pipe 2, and then is discharged from the water pipe 2. In this way, when the water point does not need water, the device can be sterilized with the main circulation system synchronously with the superheated water, and the heat exchange pipe and downstream pipeline can be sterilized without connecting to pure steam, which helps to save capital investment and reduce energy loss. The injection water that needs to be cooled is cooled before the water use point. The heat exchange tube can be installed in the technical mezzanine and does not need to be installed in the clean room, which helps to reduce the cost of maintaining the clean room.

[0009] Preferably, a water pipe 2 is further arranged between the branch pipe stop valve 4 and the water pipe 1, the water pipe 2 is connected and arranged on the branch pipe 2, and the water stop valve 2 is arranged on the water pipe 2.

[0010] By adopting the above technical solution, a plurality of water pipes are arranged on branch pipe 2, so that the pipeline can provide multiple cooling points, which helps to improve the practicability of the device.

[0011] Preferably, it also includes an indicator screen, and a pressure measuring element 2 is also provided on the branch pipe 2, and the pressure measuring element 2 is located between the water pipe 1 and the water pipe 2. The pressure measuring element 2 is connected to the indicator screen signal, and a pressure regulating module is also provided on the main pipe, and the pressure regulating module is located between the branch pipe stop valve 1 and the branch pipe stop valve 4.

[0012] By adopting the above technical solution, when water is discharged through water pipe one and water pipe two at the same time, the water pressure in branch pipe two will be relatively low. The staff can monitor the water pressure in branch pipe two after water is discharged from water pipe one through the indicator screen, and then adjust the water pressure through the pressure regulating module, so as to ensure the water output from water pipe one and water pipe two.

[0013] Preferably, the pressure regulating module is a main control valve, and the main control valve is connected and arranged on the main pipe.

[0014] By adopting the above technical solution and setting the main control valve, a certain back pressure is formed in the water flow in the main pipe, thereby ensuring the water flow pressure and flow rate in the second branch pipe.

[0015] Preferably, the pressure regulating module includes a water tank and an air pump, a piston is arranged in the water tank, the piston slides with the inner wall of the water tank, the piston divides the water tank into a first chamber connected to the air pump and a second chamber connected to the main pipe, and the branch pipe 2 is also connected to a pressure regulating control valve 1, and the end of the pressure regulating control valve 1 facing away from the branch pipe 2 is connected to the second chamber.

[0016] By adopting the above technical solution, the injection water in the main pipe flows into the water tank, is temporarily stored in the water tank and then flows out of the water tank. According to the water flow pressure displayed on the indicator screen, the water pressure in the second chamber is adjusted by adjusting the amount of gas introduced into the first chamber by the air pump. The water flows into the branch pipe 2 through the pressure regulating control valve 1, thereby realizing the regulation of the water flow pressure in the branch pipe 2. In this way, it helps to ensure the water output of the water pipe 2.

[0017] Preferably, the branch pipe 2 is also connected to a branch pipe drain pipe, and the branch pipe drain pipe is connected to a branch pipe stop valve 5.

[0018] By adopting the above technical solution, after stopping water use, close the branch pipe stop valve 1, thereby stopping the main pipe from passing injection water into the heat exchange pipe, close the water stop valve 1, open the branch pipe stop valve 4, and the superheated injection water in the main pipe flows into the branch pipe 2, open the branch pipe stop valve 5, and the water used for superheat sterilization of the pipes, heat exchange passages and valves on the branch pipe 2 flows out through the branch pipe drain pipe. In this way, the superheated injection water used for sterilization flows out from the branch pipe drain pipe instead of the water pipe 1, while ensuring the cleanliness between the various pipelines, the cleanliness and safety of the clean room where the water pipe 1 is located, which is convenient for the staff to operate.

[0019] Preferably, it also includes an indicator screen, a temperature measuring element 1 is arranged in the branch pipe 2, the temperature measuring element 1 is connected to the indicator screen signal, and a freezing control valve is also arranged between the chilled water return pipe and the heat exchange pipe.

[0020] By adopting the above technical solution, the water flow temperature in branch pipe two is monitored by temperature measuring element one, and the flow rate of chilled water in the cooling passage of the heat exchange tube is controlled by adjusting the refrigeration control valve, thereby improving the heat exchange efficiency of the heat exchange tube. While ensuring the water flow rate in branch pipe two, the water flow temperature in branch pipe two can be regulated.

[0021] Preferably, it also includes a PLC central control cabinet, the refrigeration control valve is a pneumatic regulating valve, the PLC central control cabinet controls the opening and closing of the refrigeration control valve, and the temperature measuring element is connected to the PLC central control cabinet signal.

[0022] By adopting the above technical solution, during actual use, the temperature of the injection water in branch pipe two is measured by temperature measuring element one, and the flow rate of the chilled water through the freezing control valve is monitored and adjusted according to the temperature through the PLC central control cabinet, thereby adjusting the heat exchange efficiency of the heat exchange tube. In this way, the heat exchange tube can be automatically adjusted, which helps to improve the working efficiency of the device.

[0023] Preferably, a pressure measuring element 1 is further provided between the chilled water supply pipe and the heat exchange pipe, and the pressure measuring element 1 is connected to the indicator screen signal.

[0024] By adopting the above technical solution, the pressure and flow rate of the chilled water flow in the cooling passage of the heat exchange tube are monitored by a pair of pressure measuring elements, thereby facilitating the monitoring of the heat exchange efficiency of the heat exchange tube.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. One end of branch pipe 2 is connected to the heat exchange tube, and the other end is connected to the main pipe. When water pipe 2 stops using water, open branch pipe stop valve 4, and the superheated injection water flows directly from the main pipe into branch pipe 2, thereby achieving sterilization of branch pipe 2 and the heat exchange tube. This method helps save capital investment and reduce energy loss;

[0027] 2. Setting up multiple water points helps to improve the utilization efficiency of the entire device. The heat exchange tube is installed in the technical interlayer, and water pipe 1 and water pipe 2 are installed in different clean rooms, which helps to reduce the cost of maintaining the heat exchange tube and the clean room;

[0028] 3. The pressure regulating component helps to ensure the water flow rate and pressure in the branch pipe network, ensuring that sufficient water flows out from water pipe 1 and water pipe 2 at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a structural diagram of the overall structure of the multi-point cooling device for injection water according to the embodiment of the present application;

[0030] Figure 2 This is a simplified structural diagram of the structure between the chilled water supply pipe, the heat exchange pipe and the chilled water return pipe in the embodiment of the present application;

[0031] Figure 3 It is a structural diagram mainly showing the structure of the voltage regulating module in the embodiment of the present application.

[0032] Figure numerals: 1, main pipe; 11, U-shaped pipe 1; 111, connecting pipe 1; 12, U-shaped pipe 2; 121, connecting pipe 2; 2, heat exchange pipe; 21, heat exchange passage; 22, cooling passage; 3, chilled water supply pipe; 31, water inlet pipe; 311, freezing stop valve 1; 312, pressure measuring element 1; 313, Y-type filter; 314, freezing stop valve 2; 32, freezing drain pipe; 321, freezing stop valve 3; 33, water outlet pipe; 331, freezing control valve; 332, freezing stop valve 4; 333, freezing stop valve 5; 4, chilled water return pipe; 5, branch pipe 1; 51, Branch pipe stop valve one; 6, branch pipe two; 61, temperature measuring element one; 62, water pipe one; 621, water stop valve one; 63, branch pipe stop valve two; 64, branch pipe stop valve three; 65, temperature measuring element two; 66, pressure measuring element two; 67, water pipe two; 671, water stop valve two; 68, branch pipe stop valve four; 69, branch pipe drain pipe; 691, branch pipe stop valve five; 7, pressure regulating module; 71, water tank; 711, first chamber; 712, second chamber; 72, piston; 73, connecting pipe three; 731, pressure regulating control valve one; 74, pressure regulating control valve two; 75, main control valve. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the present invention is further described below in conjunction with specific illustrations.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0035] The embodiment of the present application discloses a multi-point cooling device for water for injection.

[0036] See also Figure 1The multi-point cooling device for water for injection includes a main pipe 1, and the water for injection at 80-85°C flows from left to right through the main pipe 1. The main pipe 1 is connected with a heat exchange pipe 2, and the other end of the heat exchange pipe 2 is connected with a branch pipe 2 6. The branch pipe 2 6 is respectively connected with a water pipe 1 62 and a water pipe 2 67. One or two water pipes 2 67 can be provided on the branch pipe, and one is provided in this embodiment. In the actual working process, the water for injection flows out from the water pipe 1 62 and the water pipe 2 67 after heat exchange and temperature reduction through the heat exchange pipe 2. The multi-point cooling device for water for injection also includes a PLC central control cabinet. The PLC central control cabinet is provided with an indicator screen connected to its signal.

[0037] The heat exchange tube 2 is installed in the technical interlayer, and the water pipe 1 62 and the water pipe 2 67 are respectively arranged in different clean rooms. This method helps to reduce the impact of the heat exchange tube 2 on the clean room and helps to reduce the cost required for maintaining the clean room.

[0038] See also Figure 1-Figure 2 , a heat exchange passage 21 and a cooling passage 22 are provided in the heat exchange tube 2. A water inlet pipe 31 is provided at the lower end of the cooling passage 22, and one end of the water inlet pipe 31 away from the cooling passage 22 is provided in communication with the chilled water supply pipe 3. A freezing stop valve 1 311 is provided on the water inlet pipe 31, and a Y-type filter 313 is provided downstream of the freezing stop valve 1 311. A freezing stop valve 2 314 is provided downstream of the Y-type filter 313. A freezing drain pipe 32 is also provided in communication with the water inlet pipe 31. A freezing stop valve 321 is provided on the freezing drain pipe 32.

[0039] A pressure measuring element 312 is provided between the freezing stop valve 311 and the Y-type filter 313. The pressure measuring element 312 is connected to the PLC central control cabinet signal through a pressure transmitter. In actual work, the staff can monitor the water flow pressure and water flow rate of the chilled water in the water inlet pipe 31 through the indicator screen in the PLC central control cabinet.

[0040] The outlet of the cooling passage 22 is also connected with a water outlet pipe 33, on which a freezing control valve 331 is provided, and freezing stop valve 4 332 and freezing stop valve 5 333 are sequentially provided downstream of the freezing control valve 331. The end of the water outlet pipe 33 is connected with the chilled water return pipe 4. The freezing stop valve 1 311 and the freezing stop valve 5 333 are manual gate valves. The freezing stop valve 2 314, the freezing stop valve 3 321 and the freezing stop valve 4 332 are all pneumatic angle seat valves, and the freezing control valve 331 is a pneumatic control valve. Any pneumatic angle seat valve or pneumatic control valve includes two air ports connected to the air pump and a solenoid valve that controls the interruption, direction and size of the air flow. The solenoid valves are all connected to the PLC central control cabinet signal.

[0041] In actual use, the staff opens the freezing stop valve 1 311 and the freezing stop valve 5 333, controls the freezing stop valve 2 314 and the freezing stop valve 4 332 through the PLC central control cabinet to control the circulation of the chilled water, compares the required chilled water flow rate with the flow rate and pressure output by the pressure measuring element 1 312, and controls the flow rate of the chilled water in the cooling passage 22 by controlling the freezing control valve 331, thereby controlling the heat exchange efficiency of the heat exchange tube 2. When the water pipe 1 62 and the water pipe 2 67 stop discharging water, the staff can close the freezing stop valve 1 311 and the freezing stop valve 5 333 to stop the flow of chilled water in the cooling passage 22. The staff can open the freezing stop valve 3 321 to discharge the chilled water in the cooling passage 22 out of the cooling passage 22.

[0042] The main pipe 1 is connected with a branch pipe 5, and a branch pipe stop valve 51 is provided on the branch pipe 5. The other end of the branch pipe 5 is connected with the inlet of the heat exchange passage 21. The outlet of the heat exchange passage 21 is connected with a branch pipe 26. A water pipe 62 is connected with the branch pipe 26. The water pipe 62 is arranged in a clean room. A water stop valve 621 is also provided on the water pipe 62. Both the branch pipe stop valve 51 and the water stop valve 621 are manual diaphragm valves. In actual use, the staff opens the branch pipe stop valve 51, and the high-temperature injection water in the main pipe 1 flows into the heat exchange pipe 2 through the branch pipe 5 for cooling, and then flows into the branch pipe 26. The staff opens the water stop valve 621, and the injection water after cooling flows out from the water pipe 62.

[0043] A temperature measuring element 61 is arranged in the branch pipe 6, and the temperature measuring element 61 is located upstream of the water pipe 62. The temperature measuring element 61 is connected to the PLC central control cabinet signal through the temperature transmitter. In actual use, the staff monitors the temperature of the injection water flowing out of the heat exchange pipe 2 through the temperature measuring element 61, adjusts the freezing control valve 331, thereby controlling the flow rate of the freezing water in the heat exchange pipe 2, thereby controlling the heat exchange efficiency of the heat exchange pipe 2, and in this way, it helps to improve the automation degree of the device.

[0044] The branch pipe 2 6 is also provided with a branch pipe stop valve 2 63, which is located downstream of the water pipe 1 62. When the water pipe 2 67 does not need water, the branch pipe stop valve 2 63 can be directly controlled to be closed.

[0045] The main pipe 1 includes a U-shaped pipe 11, the bottom of the U-shaped part of the U-shaped pipe 11 is connected with a connecting pipe 111, the other end of the connecting pipe 111 is connected with the branch pipe 2 6, and the connecting pipe 111 is located downstream of the branch pipe stop valve 2 63. The connecting pipe 111 is provided with a branch pipe stop valve 3 64. When the water pipe 1 62 is used to discharge water, the staff controls the branch pipe stop valve 3 64 to open, so that the high-temperature injection water in the main pipe 1 flows directly into the branch pipe 2 6, thereby achieving the sterilization of the water pipe 1 62, the branch pipe 2 6 and the heat exchange passage 21 of the heat exchange tube 2.

[0046] A second temperature measuring element 65 is also provided in the branch pipe 6. The second temperature measuring element 65 is located downstream of the connecting pipe 111. The second temperature measuring element 65 is connected to the PLC central control cabinet signal through a temperature transmitter. A second pressure measuring element 66 is also provided in the branch pipe 6. The second pressure measuring element 66 is located downstream of the temperature measuring element. The second pressure measuring element 66 is connected to the PLC central control cabinet signal through a pressure transmitter.

[0047] The water pipe 2 67 is connected to the branch pipe 2 6, and the water pipe 2 67 is located downstream of the pressure measuring element 2 66. The water pipe 2 67 is provided with a water shut-off valve 2 671, which is a manual diaphragm valve. In actual use, the water pipe 2 67 is set in another clean room. The staff opens the water shut-off valve 2 671, and the injection water after cooling flows out from the water pipe 2 67.

[0048] The main pipe 1 also includes a U-shaped pipe 12, the bottom of the U-shaped part of the U-shaped pipe 12 is connected with a connecting pipe 121, the other end of the connecting pipe 121 is connected with the branch pipe 6, and the connecting pipe 121 is located downstream of the water pipe 67. A branch pipe stop valve 4 68 is provided on the connecting pipe 121. When the water pipe 67 is used to discharge water, the staff controls the branch pipe stop valve 4 68 to open, so that the high-temperature injection water in the main pipe 1 flows directly into the branch pipe 6, thereby achieving the sterilization of the water pipe 67, the branch pipe 6 and the heat exchange passage 21 of the heat exchange tube 2.

[0049] One end of the branch pipe 2 6 away from the heat exchange passage 21 is connected to a branch pipe drain pipe 69 , and a branch pipe stop valve 5 691 is provided on the branch pipe drain pipe 69 .

[0050] See also Figure 1-Figure 3, a pressure regulating module 7 is also provided on the main pipe 1, and the pressure regulating module 7 includes a water tank 71, and the water tank 71 is provided on the main pipe 1. A piston 72 is provided in the water tank 71, and the piston 72 slides in the water tank 71 along a direction perpendicular to the main pipe 1. The piston 72 divides the water tank 71 into a first chamber 711 and a second chamber 712. The multi-point cooling device for injection water also includes an air pump, and the PLC central control cabinet controls the output of the air pump. Two air pipes connected to the air pump are provided on the first chamber 711. The second chamber 712 is connected to the main pipe 1, and the lower end of the second chamber 712 is connected to a connecting pipe 3 73, and the other end of the connecting pipe 3 73 is connected to the branch pipe 2 6. The connecting pipe 3 73 is located between the U-shaped pipe 1 11 and the U-shaped pipe 2 12 on the main pipe 1. The connecting pipe 3 73 is located between the temperature measuring element 2 65 and the pressure measuring element 2 66 on the branch pipe 2 6. A pressure regulating control valve 1 731 is provided on the connecting pipe 3 73. The main pipe 1 is also provided with a second pressure regulating control valve 74, which is located between the water tank 71 and the second U-shaped pipe 12. The pressure regulating control valve is a normally open valve.

[0051] The pressure regulating module 7 also includes a main control valve 75, which is located between the pressure regulating control valve 2 74 and the U-shaped tube 2 12. The main control valve 75 is a manual diaphragm valve. In actual work, the staff controls the pressure of the pressure measuring element 1 312 and the pressure measuring element 2 66 according to the pressure feedback on the indicator screen, by controlling the main control valve 75, the amount of gas introduced into the first chamber 711 and the pressure regulating control valve 2 74, thereby controlling the liquid pressure on the main pipe 1. By controlling the pressure regulating control valve 1 731, the injection water added to the branch pipe 2 6 is controlled, thereby ensuring a stable water flow out of the water pipe 2 67.

[0052] Branch stop valve 2 63 and pressure regulating control valve 2 74 are normally open pneumatic diaphragm valves, and branch stop valve 3 64, branch stop valve 4 68, branch stop valve 5 691 and pressure regulating control valve 1 731 are all normally closed pneumatic diaphragm valves. Any pneumatic diaphragm valve includes two air ports connected to the air pump and a solenoid valve that controls the interruption, direction and size of the air flow. The solenoid valves are all connected to the PLC central control cabinet signal. In actual work, the PLC central control cabinet will adjust the opening and closing and size of each valve according to the values ​​output by the temperature measuring element 1 61, the temperature measuring element 2 65, the pressure measuring element 1 312 and the pressure measuring element 2 66 through the transmitter, thereby realizing automatic control of the entire multi-point cooling device for injection water.

[0053] The implementation principle of the multi-point cooling device for injection water in the embodiment of the present application is as follows: in the working state, the staff opens the freezing stop valve 1 311 and the freezing stop valve 5 333, and controls the freezing stop valve 2 314, the freezing control valve 331 and the freezing stop valve 4 332 to open through the PLC central control cabinet, and the freezing water enters the cooling passage 22 of the heat exchange tube 2 from the freezing water supply pipe 3 through the water inlet pipe 31 to perform heat exchange. The staff opens the branch pipe stop valve 1 51 and the main control valve 75, and the high-temperature injection water flows into the heat exchange tube 2 through the branch pipe 1 5 for instantaneous cooling, and the injection water after cooling flows into the branch pipe 2 6, and the staff can open the water stop valve 1 621 and the water stop valve 2 671, and the injection water after cooling is discharged from the device from the water pipe 1 62 and the water pipe 2 67 for convenient use.

[0054] The staff can monitor the water flow temperature at the temperature measuring element 1 61 and the temperature measuring element 2 65 through the indicator screen, and control the refrigeration control valve 331 through the PLC central control cabinet, thereby changing the flow rate of the refrigerated water in the heat exchange tube 2, thereby changing the heat exchange efficiency of the heat exchange tube 2. The staff can monitor the water pressure and water flow rate at the pressure measuring element 2 66 through the indicator screen, and control the pressure regulating module 7 through the PLC central control cabinet, thereby changing the water flow pressure in the branch pipe 2 6, and ensuring that a certain amount of water flows out of the water pipe 1 62 and the water pipe 2 67.

[0055] When the water is used, the staff closes the water stop valve 1 621 and the water stop valve 2 671. The staff controls the branch pipe stop valve 3 64 and the branch pipe stop valve 4 68 to open through the PLC central control cabinet, and the superheated injection water flows from the main pipe 1 into the branch pipe 2 6, thereby achieving the sterilization of the branch pipe 1 5, the heat exchange passage 21 and the branch pipe 2 6. The staff controls the branch pipe stop valve 5 691 to open through the PLC central control cabinet, and the high-temperature injection water for sterilization is discharged from the pipeline. In this way, multiple injection water use points after cooling are set on the main pipe 1, which is convenient for use. While ensuring the clean and sterile state in the pipeline, it helps to reduce capital investment and energy loss.

[0056] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A multi-point cooling device for water for injection, comprising a main pipe (1) for circulating water for injection, a chilled water supply pipe (3) and a chilled water return pipe (4), characterized in that: The invention also comprises a heat exchange tube (2) for rapidly cooling the injection water in the main pipe (1); a cooling passage (22) and a heat exchange passage (21) for heat exchange are arranged in the heat exchange tube (2); the cooling passage (22) is arranged in communication between the chilled water supply pipe (3) and the chilled water return pipe (4); a freezing stop valve (311) is arranged between the chilled water supply pipe (3) and the cooling passage (22); the inlet of the heat exchange passage (21) is arranged in communication with the main pipe (1); A branch pipe stop valve 1 (51) is provided between the inlet of the heat exchange passage (21) and the main pipe (1); a branch pipe 2 (6) is provided at the outlet of the heat exchange passage (21); a water pipe 1 (62) is provided at the branch pipe 2 (6); a water stop valve 1 (621) is provided at the water pipe 1 (62); a branch pipe stop valve 4 (68) is also provided at the branch pipe 2 (6); an end of the branch pipe stop valve 4 (68) away from the branch pipe 2 (6) is in communication with the main pipe (1).

2. The multi-point cooling device for water for injection according to claim 1, characterized in that: A water pipe 2 (67) is also provided between the branch pipe stop valve 4 (68) and the water pipe 1 (62). The water pipe 2 (67) is connected to the branch pipe 2 (6), and a water stop valve 2 (671) is provided on the water pipe 2 (67).

3. The multi-point cooling device for water for injection according to claim 2, characterized in that: The invention also comprises an indication screen. The branch pipe 2 (6) is provided with a second pressure measuring element (66). The second pressure measuring element (66) is located between the first water pipe (62) and the second water pipe (67). The second pressure measuring element (66) is connected to the indication screen signal. The main pipe (1) is also provided with a pressure regulating module (7). The pressure regulating module (7) is located between the first branch pipe stop valve (51) and the fourth branch pipe stop valve (68).

4. The multi-point cooling device for water for injection according to claim 3, characterized in that: The pressure regulating module (7) is a main control valve (75), and the main control valve (75) is arranged in communication with the main pipe (1).

5. The multi-point cooling device for water for injection according to claim 3, characterized in that: The pressure regulating module (7) comprises a water tank (71) and an air pump. A piston (72) is arranged in the water tank (71). The piston (72) is slidably engaged with the inner wall of the water tank (71). The piston (72) divides the water tank (71) into a first chamber (711) connected to the air pump and a second chamber (712) connected to the main pipe (1). The branch pipe 2 (6) is also connected to a pressure regulating control valve 1 (731). The end of the pressure regulating control valve 1 (731) facing away from the branch pipe 2 (6) is connected to the second chamber (712).

6. The multi-point cooling device for water for injection according to claim 1, characterized in that: The branch pipe 2 (6) is also connected to a branch pipe drainage pipe (69), and the branch pipe drainage pipe (69) is connected to a branch pipe stop valve 5 (691).

7. The multi-point cooling device for water for injection according to claim 1, characterized in that: It also includes an indicator screen. A temperature measuring element 1 (61) is arranged in the branch pipe 2 (6). The temperature measuring element 1 (61) is connected to the indicator screen signal. A freezing control valve (331) is also arranged between the freezing water return pipe (4) and the heat exchange pipe (2).

8. The multi-point cooling device for water for injection according to claim 7, characterized in that: It also includes a PLC central control cabinet, the refrigeration control valve (331) is a pneumatic regulating valve, the PLC central control cabinet controls the opening and closing of the refrigeration control valve (331), and the temperature measuring element 1 (61) is connected to the PLC central control cabinet by signal.

9. The multi-point cooling device for water for injection according to claim 1, characterized in that: A pressure measuring element 1 (312) is also provided between the chilled water supply pipe (3) and the heat exchange pipe (2), and the pressure measuring element 1 (312) is connected to an indication screen signal.

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