Injection water distribution device with superheated water sterilization function

Abstract

The utility model relates to an injection water distribution device with a superheated water sterilization function, which comprises a main pipe I connected to distillation equipment, the other end of the main pipe I is communicated with a storage tank, and the storage tank is further communicated with a main pipe III; the plurality of water using pipes are arranged on the main pipe III in a communicating manner; the heat exchanger comprises a main channel and a heat exchange channel, the other end of the third main pipe is arranged on the main channel in a communicating mode, the other end of the main channel is further provided with the third main pipe in a communicating mode, the two ends of the heat exchange channel are communicated with a first supply pipe and a first drainage pipe respectively, and the two ends of the heat exchange channel are further communicated with a second supply pipe and a second drainage pipe respectively. The circulating pump is arranged on the third main pipe in a communicating mode; a temperature measuring element I, a temperature measuring element II and a temperature measuring element III; and the indicating screen is electrically connected with the temperature measuring element I, the temperature measuring element II and the temperature measuring element II. The application has the effect of protecting the sterile environment in the circulation loop.

Description

Technical Field

[0001] This application relates to the technical field of water for injection, and in particular to an injection water distribution device with a superheated water sterilization function. Background Art

[0002] Water for injection refers to water that complies with the regulations under the item of water for injection in the Chinese Pharmacopoeia. Water for injection is the water obtained by distilling distilled water or deionized 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 conveying pipelines should be non-toxic and corrosion-resistant. The design and installation of pipelines should avoid dead ends and blind pipes. The cleaning and sterilization cycles of storage tanks and pipelines should be specified. The storage of water for injection can be carried out by maintaining a temperature above 80 °C, circulating with a temperature above 70 °C, or storing at a temperature below 4 °C.

[0003] In the related art, qualified water for injection enters the main pipe through a distillation device. A plurality of water pipes are connected to the main pipe, and the plurality of water pipes are respectively arranged at a plurality of water use points. The qualified water for injection enters each water pipe from the main pipe. However, in actual use, the production efficiency of water for injection is greater than the use efficiency. Therefore, a water storage tank is connected to the main pipe. The qualified water for injection produced by the distillation device first enters the water storage tank for storage, and the plurality of water pipes are all connected to the water storage tank. When water is needed, the valve arranged on the water pipe is opened again. The water for injection in the water storage tank flows into each water pipe through the main pipe and then is discharged from the water pipe. In this way, production and use are separated, which helps to improve the working efficiency of the entire device and helps to save resources and costs.

[0004] In view of the above related art, after the valve on the water pipe is closed, the water for injection in the main pipe will flow back into the water storage tank. However, when these water for injection flows in the pipeline, it will gradually cool down, and there is a situation where the required temperature and the specified aseptic environment cannot be achieved, and these water for injection need to be reheated and sterilized for the second time. Summary of the Invention

[0005] In order to sterilize the water for injection flowing back into the water storage tank for the second time and maintain the temperature and sterility in the storage tank, this application provides an injection water distribution device with a superheated water sterilization function.

[0006] An injection water distribution device with a superheated water sterilization function provided by this application adopts the following technical solutions:

[0007] An injection water distribution device with a superheated water sterilization function comprises a main pipe 1 connected to a distillation device, the main pipe 1 is provided with a main pipe stop valve 1, the end of the main pipe 1 away from the distillation device is connected to a storage tank, and the storage tank is also connected to a main pipe 3; a heat exchanger, the heat exchanger comprises a main passage and a heat exchange passage, the end of the main pipe 3 away from the storage tank is connected to the main passage, the end of the main passage away from the main pipe 3 is also connected to a main pipe 2, the end of the main pipe 2 away from the heat exchanger is connected to the storage tank, the two ends of the heat exchange passage are respectively connected to a supply pipe 1 for supplying industrial steam and a drain pipe 1 for discharging condensed industrial steam, and the two ends of the heat exchange passage are also respectively connected to a useful A supply pipe 2 for supplying cooling water and a drain pipe 2 for discharging cooling water, the supply pipe 1 and the supply pipe 2 are respectively provided with a supply stop valve 2 and a supply stop valve 4, the drain pipe 1 and the drain pipe 2 are respectively provided with a drain stop valve 1 and a drain stop valve 3; a plurality of water pipes connected to the main pipe 2, any of the water pipes is provided with a water stop valve; a circulating pump, the circulating pump is connected to the main pipe 2; a temperature measuring element 1, a temperature measuring element 2 and a temperature measuring element 3, the temperature measuring element 1 is arranged in a storage tank, and the temperature measuring element 2 and the temperature measuring element 3 are respectively arranged at both ends of the main passage of the heat exchanger; an indication screen, the temperature measuring element 1, the temperature measuring element 2 and the temperature measuring element 3 are all electrically connected to the indication screen.

[0008] By adopting the above technical solution, the staff passes the injection water produced by the distillation equipment into the storage tank through the main pipe 1. When water is needed, the staff opens the water stop valves on multiple water pipes, and the injection water flows out of the distribution device through the main pipe 3 and multiple water pipes. When the water is used, the staff closes the water stop valve, opens the supply stop valve 2 and the drainage stop valve 1, and passes high-temperature industrial steam into the supply pipe 1. The industrial steam exchanges heat with the injection water in the main passage in the heat exchange passage of the heat exchanger, so that the injection water in the main passage is heated, and the condensed industrial steam is discharged from the drainage pipe 1. Until it is above 121°C. When the temperatures detected by the temperature measuring element 1, the temperature measuring element 2 and the temperature measuring element 3 displayed on the indicator screen are all higher than 121°C, the sterilization timing starts. After 60 minutes of sterilization, the staff closes the supply stop valve 2 to stop the steam from being passed into the heat exchange passage, and the sterilization is completed. The staff opens the supply stop valve 4 and the drainage stop valve 3, and the cooling water enters the heat exchange passage through the supply pipe 2 to cool the injection water in the main passage, so that the high-temperature injection water during sterilization is cooled to the circulation temperature. In this way, the temperature and humidity of the clean area of ​​the water point will not be affected during sterilization, and no unnecessary pipes will be added at the water point. This method ensures the sterilization effect while the control process is simple and the sterilization effect is stable.

[0009] Preferably, the upper end of the heat exchange passage is also connected to a supply pipe three for supplying compressed air, and a supply stop valve six is ​​provided on the supply pipe three.

[0010] By adopting the above technical solution, when sterilization is not required, the staff opens the supply stop valve 6, and the compressed air discharges the high-temperature industrial steam or cooling water from the heat exchange passage, which helps to reduce the impact of the high-temperature industrial steam or cooling water remaining in the heat exchange passage on the water for injection during the normal circulation of the water for injection.

[0011] Preferably, the lower end of the heat exchange passage is also connected to a drain pipe three, and a drain stop valve five is provided on the drain pipe three.

[0012] By adopting the above technical solution, the staff first opens the drainage stop valve five, and then opens the supply stop valve six, and the compressed air causes the remaining high-temperature industrial steam or cooling water to be discharged from the heat exchange passage through the drainage pipe three and out of the distribution device.

[0013] Preferably, it also includes a PLC central control cabinet, and the temperature measuring element one, temperature measuring element two, and temperature measuring element three are electrically connected to the PLC central control cabinet respectively, the indicator screen is arranged in the PLC central control cabinet, and the indicator screen is electrically connected to the PLC central control cabinet, and the supply stop valve two, supply stop valve four, drain stop valve one, and drain stop valve three are all electrically connected to the PLC central control cabinet.

[0014] By adopting the above technical solution, the staff can control the supply stop valve 2, supply stop valve 4, drain stop valve 1 and drain stop valve 3 in time according to the temperatures of temperature measuring element 1, temperature measuring element 2 and temperature measuring element 3 displayed on the indicator screen set in the PLC central control cabinet, which helps to improve the degree of automation of the entire distribution device.

[0015] Preferably, a respirator is provided on the storage tank, a breathing tube connected to the outside is provided at the upper end of the respirator, a connecting pipe is provided at the lower end of the respirator, an end of the connecting pipe facing away from the respirator is connected to the storage tank, a drain pipe four for discharging pure steam after condensation is also provided at the lower end of the respirator, a drain stop valve six is ​​provided on the drain pipe four, a temperature measuring element four is provided in the drain pipe, and the temperature measuring element four is electrically connected to the PLC central control cabinet.

[0016] By adopting the above technical solution, the respirator helps to maintain the pressure balance inside and outside the storage tank or the entire distribution device, and prevents equipment damage caused by excessive pressure difference. Before the temperature in the storage tank rises to 100°C, the non-condensable gas in the tank will be replaced by the evaporated steam and discharged from the storage tank through the respirator, and the non-condensable gas will not be generated in the storage tank.

[0017] Preferably, a fourth supply pipe for supplying compressed air is also connected to the breathing pipe. A supply stop valve VIII is provided on the fourth supply pipe, and the supply stop valve VIII is electrically connected to the PLC central control cabinet.

[0018] By adopting the above technical solution, by controlling the supplied compressed air, it can ensure the air quality inhaled by the breather when the pressure in the storage tank is relatively small, which helps to ensure the cleanliness of the entire distribution device.

[0019] Preferably, a thermostatic steam trap II is provided at the end of the fourth drain pipe.

[0020] By adopting the above technical solution, the thermostatic steam trap II facilitates the discharge of condensate water in the breather while preventing steam leakage, ensuring the safety and energy-saving effect of the breather and ensuring the breathing effect.

[0021] Preferably, a vortex flowmeter is connected to the third main pipe. The vortex flowmeter is electrically connected to the PLC central control cabinet. The circulation pump includes a variable-frequency motor, and the variable-frequency motor is electrically connected to the PLC central control cabinet. The vortex flowmeter is signal-connected to the variable-frequency motor.

[0022] By adopting the above technical solution, according to the vortex flowmeter monitoring the flow rate of the injection water in the third main pipe, the variable-frequency motor can be adjusted in real time, which helps to improve the automation degree of the entire distribution device.

[0023] Preferably, a liquid level measuring element for measuring the liquid level is provided in the storage tank, and the liquid level measuring element is signal-connected to the PLC central control cabinet.

[0024] By adopting the above technical solution, the side liquid level element facilitates the staff to monitor the storage volume of the injection water in the storage tank without opening the storage tank.

[0025] Preferably, a TOC measuring element and a conductivity measuring element are also provided on the third main pipe. The TOC measuring element and the conductivity measuring element are respectively signal-connected to the PLC central control cabinet.

[0026] By adopting the above technical solution, in this way, the TOC content and ion concentration of the injection water returned to the storage tank can be monitored in real time, which helps to monitor the quality of the returned injection water.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. Pass industrial steam into the heat exchanger through supply pipe one to heat the water for injection, sterilize the entire distribution system through the circulation pump, pass cooling water into the heat exchanger through supply pipe two to cool down the water for injection used for sterilization, and realize the reuse of the water for injection through the circulation pump. This way helps to save costs;

[0029] 2. Pass compressed air into the heat exchange path of the heat exchanger, which helps to reduce the impact of high-temperature industrial steam or cooling water on the water for injection in normal use;

[0030] 3. Through the PLC central control cabinet and each component electrically or signal-connected to the PLC central control cabinet, it helps to improve the automation degree of the entire distribution device, improve work efficiency, and ensure the accuracy and stability of operation. At the same time, the breather helps to maintain the pressure balance inside and outside the storage tank and improve the safety of the distribution device. Description of the Drawings

[0031] Figure 1 It is a schematic structural diagram mainly showing the overall structure of the water for injection distribution device with the function of superheated water sterilization in the embodiment of the present application;

[0032] Figure 2 It is a schematic structural diagram mainly showing the storage tank and the structures of each pipeline connected to the storage tank in the embodiment of the present application;

[0033] Figure 3 It is a schematic structural diagram mainly showing the main pipe two and the main pipe three and the structures of each valve body arranged on the main pipe two and the main pipe three in the embodiment of the present application;

[0034] Figure 4 It is a schematic structural diagram mainly showing the heat exchanger and the structures of each pipeline connected to the heat exchanger in the embodiment of the present application;

[0035] Figure 5 It is a schematic structural diagram mainly showing the breather and the structures of each pipeline connected to the breather in the embodiment of the present application.

[0036] Reference Numerals: 100, water for injection; 200, industrial steam; 300, cooling water; 400, compressed air; 500, drain port; 600, exhaust port;

[0037] 1, storage tank; 11, inlet pipe; 12, spray ball; 13, rupture disk; 14, pressure measuring element one; 15, pressure gauge; 16, liquid level measuring element; 17, temperature measuring element one;

[0038] 2, main pipe one; 21, main pipe stop valve one;

[0039] 3. Second supervisor; 31. First waste discharge pipe; 311. First waste discharge stop valve; 32. Second main pipe stop valve; 33. Circulation pump; 331. Variable frequency motor; 332. Fourth waste discharge pipe; 3321. Fourth waste discharge stop valve; 34. Third pressure measuring element; 35. Third main pipe stop valve; 36. Water supply pipe; 361. Water supply stop valve; 37. Second waste discharge pipe; 371. Second waste discharge stop valve; 38. Second temperature measuring element;

[0040] 4. Heat exchanger; 41. Main passage; 42. Heat exchange passage; 43. First pipe; 431. Safety valve; 432. Buffer elbow; 433. Second pressure measuring element; 434. Second pipe; 435. Pipe control valve; 44. First supply pipe; 441. First supply stop valve; 442. First Y-type filter; 443. Second supply stop valve; 45. First drain pipe; 451. First drain stop valve; 452. First thermostatic steam trap; 453. Second drain stop valve; 46. Second supply pipe; 461. Third supply stop valve; 462. Second Y-type filter; 463. Fourth supply stop valve; 47. Second drain pipe; 471. Third drain stop valve; 472. Fourth drain stop valve; 48. Third supply pipe; 481. Fifth supply stop valve; 482. First supply pressure reducing valve; 483. Sixth supply stop valve; 49. Third drain pipe; 491. Fifth drain stop valve;

[0041] 5. Third supervisor; 51. Third temperature measuring element; 52. TOC sensor; 53. Conductivity sensor; 54. Vortex flowmeter; 55. Third waste discharge pipe; 551. Third waste discharge stop valve; 56. Fourth main pipe stop valve;

[0042] 6. First exhaust pipe; 61. Breather stop valve;

[0043] 7. Breather; 71. Breather pipe; 72. Fourth supply pipe; 721. Seventh supply stop valve; 722. Second supply pressure reducing valve; 723. Eighth supply stop valve; 73. Second exhaust pipe; 731. Exhaust stop valve; 74. Fourth drain pipe; 741. Sixth drain stop valve; 75. Fifth drain pipe; 751. Seventh drain stop valve; 76. Sixth drain pipe; 77. Fourth temperature measuring element; 78. Second thermostatic steam trap;

[0044] 8. Sampling pipe; 81. Sterile sampling valve. Detailed implementation mode

[0045] The following further elaborates on this application in conjunction with the attached Figures 1-5 to provide a more detailed description of this application.

[0046] The embodiment of this application discloses an injection water distribution device with a superheated water sterilization function.

[0047] See Figures 1-4The injection water distribution device with superheated water sterilization function includes a storage tank 1, the upper end of the storage tank 1 is connected to a water inlet pipe 11, the lower end of the water inlet pipe 11 is provided with a spray ball 12, and the spray ball 12 is located at the top of the storage tank 1. The end of the water inlet pipe 11 away from the storage tank 1 is connected to a main pipe 2, and the main pipe 2 is connected to a main pipe stop valve 21, and the main pipe 2 is connected to the distillation equipment. A main pipe 2 3 is also provided at the lower side of the storage tank 1, and a U-shaped pipe is provided on the main pipe 2 3, and a water pipe 36 is provided at the lower end of the U-shaped pipe, and a water stop valve 361 is provided on the water pipe 36. A plurality of U-shaped pipes are arranged at intervals in the horizontal direction, and any water pipe 36 is arranged in a clean room, and any two adjacent U-shaped pipes are connected. The end of the main pipe 2 3 away from the storage tank 1 is provided with a heat exchanger 4, which is a double tube sheet heat exchanger 4, and includes a main passage 41, one end of which is connected to the main pipe 2 3, and the end of the main passage 41 away from the main pipe 2 3 is connected to the main pipe 3 5, and the end of the main pipe 3 5 away from the heat exchanger 4 is connected to the water inlet pipe 11. The main pipe 2 3 is also provided with a circulation pump 33.

[0048] In actual work, the staff opens the main shut-off valve 21, and the qualified injection water 100 produced by the distillation equipment enters the water inlet pipe 11 through the main pipe 2, and is sprayed in the storage tank 1 through the spray ball 12. After a certain amount of injection water 100 accumulates in the storage tank 1, the circulation pump 33 is started. The circulation pump 33 drives the injection water 100 in the storage tank 1 to flow through the main pipe 3 5, the main passage 41 of the heat exchanger 4 and the main pipe 3 5 in sequence, and then enters the water inlet pipe 11, and flows back into the storage tank 1 from the spray ball 12.

[0049] The injection water dispensing device with superheated water sterilization function also includes a PLC central control cabinet, and an indication screen electrically connected to the PLC central control cabinet is also provided on the PLC central control cabinet. The staff can control the entire dispensing device according to the numerical values ​​on the indication screen fed back by sensors at various locations.

[0050] See also Figures 1-3 , a temperature measuring element 17 and a liquid level measuring element 16 are provided in the storage tank 1, and both the temperature measuring element 17 and the liquid level measuring element 16 are electrically connected to the PLC central control cabinet. A bursting disc 13 is also provided in the storage tank 1. The staff can monitor the temperature of the injection water 100 in the storage tank 1 through the temperature measuring element 17 to ensure that qualified injection water 100 is stored in the storage tank 1. The staff can monitor the injection water 100 reserve in the storage tank 1 through the liquid level measuring element 16, and control the main stop valve 21 to open through the PLC central control cabinet to replenish the injection water 100 into the storage tank 1. When the pressure in the storage tank 1 is normal, the bursting disc 13 remains in a closed state. When the pressure in the storage tank 1 exceeds the preset rupture pressure of the bursting disc 13, the bursting disc 13 quickly ruptures to release the pressure, preventing the entire distribution device and other pipelines from further pressure shock and damage.

[0051] See Figures 1-4 Figures 1-4 , the heat exchanger 4 further includes a heat exchange passage 42, and the heat exchange passage 42 is not communicated with the main passage 41. A pipe 43 is connected to the upper end of the heat exchange passage 42 in a communicating manner. A safety valve 431 is additionally connected to the pipe 43. A supply pipe 48 and a pipe 434 are also connected to the end of the pipe 43 facing away from the heat exchange passage 42. A pipe control valve 435 is provided on the pipe 434. The pipe control valve 435 is a pneumatic control valve and is electrically connected to the PLC central control cabinet. A temperature measuring element 51 is provided on the main pipe 5. The temperature measuring element 51 is electrically connected to the PLC central control cabinet. The pipe control valve 435 and the temperature measuring element 51 are connected by a signal through the PLC central control cabinet. A buffer elbow 432 is also connected to the pipe 43. A pressure measuring element 433 is provided at the end of the buffer elbow 432 facing away from the pipe 43. The pressure measuring element 433 is electrically connected to the PLC central control cabinet. The pressure measuring element 433 and the safety valve 431 help to ensure the fluid pressure in the heat exchange passage 42 of the heat exchanger 4 and help to protect the safety of the heat exchanger 4.

[0052] A temperature measuring element 51 is also provided on the main pipe 3. The temperature measuring element 51 is electrically connected to the PLC central control cabinet. The temperature measuring element 38 and the temperature measuring element 51 are respectively located at both ends of the main passage 41 of the heat exchanger 4. The staff can judge the heat exchange effect of the heat exchanger 4 by monitoring the data transmitted back by the temperature measuring element 38 and the temperature measuring element 51, and thus adjust the distribution device according to the heat exchange effect.

[0053] A supply pipe 44 is also connected to the end of the pipe control valve 435 facing away from the pipe 43. A supply stop valve 441 and a supply stop valve 443 are connected to the supply pipe 44. A Y-type filter 442Y is provided between the supply stop valve 441 and the supply stop valve 443. The end of the supply pipe 44 facing away from the pipe control valve 435 is connected to the pipeline for supplying industrial steam 200. The supply stop valve 441 is a manual gate valve. The supply stop valve 443 is a pneumatic angle seat valve and is electrically connected to the PLC central control cabinet. A drain pipe 45 is also connected to the lower end of the heat exchange passage 42. The end of the drain pipe 45 facing away from the heat exchange passage 42 is connected to the pipeline for discharging condensed water. A drain stop valve 451 and a drain stop valve 453 are provided on the drain pipe 45. A thermostatic steam trap 452 is provided between the drain stop valve 451 and the drain stop valve 472. The condensed water in the heat exchanger 4 can be effectively discharged through the thermostatic steam trap 452, ensuring the heat exchange efficiency. At the same time, it helps to prevent steam leakage and ensure the safety and energy-saving effect of the distribution device. The drain stop valve 453 is a manual stop valve. The drain stop valve 451 is a pneumatic angle seat valve and is electrically connected to the PLC central control cabinet.

[0054] When the distribution device starts working, it is necessary to first open the supply stop valve 441 and the drain stop valve 453. When it is necessary to perform a secondary heating on the injection water 100 after passing through each water pipe 36, the supply stop valve 443 and the drain stop valve 451 are opened through the PLC central control cabinet, and the high-temperature industrial steam 200 enters the heat exchange passage 42 of the heat exchanger 4 through the supply pipe 44 and the pipeline 43. The heat exchange passage 42 will exchange heat with the main passage 41, thereby realizing the secondary sterilization of the injection water 100 in the main passage 41.

[0055] The lower end of the heat exchange passage 42 is also connected with a supply pipe 2 46, and the end of the supply pipe 2 46 away from the heat exchange passage 42 is connected with the pipeline for supplying cooling water 300. The supply pipe 2 46 is provided with a supply stop valve 3 461 and a supply stop valve 4 463, and a Y-type filter 2 462Y is provided between the supply stop valve 3 461 and the supply stop valve 4 463. The supply stop valve 3 461 is a manual angle seat valve, and the supply stop valve 4 463 is a pneumatic angle seat valve. The supply stop valve 3 461 is electrically connected to the PLC central control cabinet. The end of the pipeline control valve 435 away from the pipeline 1 43 is also connected with a drain pipe 2 47, and the drain pipe 2 47 is connected with a drain stop valve 3 471 and a drain stop valve 4 472, and the drain stop valve 4 472 is a manual angle seat valve, and the drain stop valve 3 471 is a pneumatic angle seat valve, and the drain stop valve 3 471 is electrically connected to the PLC central control cabinet. The staff opens the supply stop valve 3 461 and the drainage stop valve 4 472 in advance. When the superheated water sterilization is completed, the injection water 100 in the entire distribution device is cooled. The supply stop valve 4 463 and the drainage stop valve 3 471 are controlled by the PLC central control cabinet. The cooling water 300 flows into the heat exchange passage 42 of the heat exchanger 4 through the supply pipe 2 46 and exchanges heat with the injection water 100 in the main passage 41. The cooling water 300 after heat exchange is then discharged through the drainage pipe 2 47. The Y-type filter 2 462Y helps to reduce the possibility of impurities in the cooling water 300 pipeline entering the heat exchanger 4.

[0056] One end of the supply pipe 3 48 is connected and arranged between the safety valve 431 and the pipeline control valve 435, the supply pipe 3 48 is connected and arranged on the pipeline 1 43, and the side of the supply pipe 3 48 away from the pipeline 1 43 is connected and arranged on the pipeline supplying compressed air 400, and the supply pipe 3 48 is provided with a supply stop valve 5 481 and a supply stop valve 6 483, and a supply pressure reducing valve 1 482 is arranged between the supply stop valve 5 481 and the supply stop valve 6 483. The supply stop valve 5 481 is a manual angle seat valve. The supply stop valve 6 483 is a pneumatic angle seat valve, and the supply angle seat valve 6 is electrically connected to the PLC central control cabinet.

[0057] At the lower end of the heat exchange passage 42, a third drain pipe 49 is also connected. A fifth drain stop valve 491 is provided on the third drain pipe 49. The fifth drain stop valve 491 is a pneumatic angle seat valve and is electrically connected to the PLC central control cabinet. One section of the third drain pipe 49 away from the heat exchange passage 42 is connected to the drain pipe in the clean room. The staff needs to open the fifth supply stop valve 481 in advance. When the heat exchanger 4 does not need to perform heat exchange work, the staff first opens the fifth drain stop valve 491, and then opens the sixth supply stop valve 483. Compressed air 400 enters the third supply pipe 48, passes through the fifth supply stop valve 481, the first supply pressure reducing valve 482, and the sixth supply stop valve 483 in sequence, and enters the heat exchange passage 42 of the heat exchanger 4 through the first pipe 43, so that the residual high-temperature steam, condensed water or cooling water 300 in the heat exchange passage 42 is discharged through the third drain pipe 49. In this way, when the heat exchanger 4 does not need to work, the influence of the residues in the heat exchange passage 42 on the injection water 100 in the main passage 41 can be reduced.

[0058] A first pressure measuring element 14 is also provided in the storage tank 1. The first pressure measuring element 14 is electrically connected to the PLC central control cabinet. A pressure gauge 15 is also provided on the storage tank 1. The pressure gauge 15 facilitates the staff to monitor the pressure in the storage tank 1 on site, which helps to improve the safety and stability of the entire distribution device.

[0059] See Figures 1-5 , a first exhaust pipe 6 is also connected to the water inlet pipe 11. A breathing stop valve 61 is provided on the first exhaust pipe 6. The breathing stop valve 61 is a pneumatic diaphragm valve and is electrically connected to the PLC central control cabinet. A breather 7 is provided at one end of the first exhaust pipe 6 away from the water inlet pipe 11. The lower end of the breather 7 is connected to the first exhaust pipe 6. The upper end of the breather 7 is connected to a breathing pipe 71. An exhaust pipe 73 is connected to the breathing pipe 71. The other end of the exhaust pipe 73 is connected to the exhaust port 600 in the clean room. An exhaust stop valve 731 is connected to the exhaust pipe 73. The exhaust stop valve 731 is a pneumatic ball valve and is electrically connected to the PLC central control cabinet. When the pressure in the storage tank 1 detected by the first pressure measuring element 14 is too high, the PLC central control cabinet controls the breathing stop valve 61 to open, so that the excess gas in the storage tank 1 is discharged from the exhaust port 600 of the room through the first exhaust pipe 6, the breather 7, the breathing pipe 71 and the exhaust pipe 73 in sequence.

[0060] A supply pipe four 72 is also connected to the breathing pipe 71. The other end of the supply pipe four 72 is connected to the pipeline for supplying compressed air 400. A supply stop valve seven 721 and a supply stop valve eight 723 are arranged on the supply pipe four 72. A supply pressure reducing valve two 722 is arranged between the supply stop valve seven 721 and the supply stop valve eight 723. The supply stop valve seven 721 is a manual ball valve, and the supply stop valve eight 723 is a pneumatic ball valve. The supply stop valve eight 723 is electrically connected to the PLC central control cabinet. The staff needs to open the supply stop valve seven 721 in advance. When the pressure measuring element one 14 detects that the pressure in the storage tank 1 is too low, the PLC central control cabinet controls the supply stop valve eight 723 to open. The compressed air 400 enters the storage tank 1 through the supply pipe four 72, the breathing pipe 71, the respirator 7 and the exhaust pipe one 6, so as to quickly supplement the pressure in the storage tank 1 and ensure the stability of each pipeline.

[0061] Through the setting of the respirator 7 and each pipeline, not only can the pressure change be monitored and responded to in real time, but also the safety, stability and reliability of the system under various working conditions are ensured through the combination of automatic control and manual operation.

[0062] A drain pipe six 76 is also arranged on the respirator 7. The end of the drain pipe six 76 is connected to the drain outlet 500 arranged in the clean room. A thermostatic steam trap two 78 is also connected to the drain pipe six 76 near the drain outlet 500. The front end of the drain pipe six 76 is connected to a drain pipe four 74. The other end of the drain pipe four 74 is connected to the breathing pipe 71. A drain stop valve six 741 is arranged on the drain pipe four 74. A drain pipe five 75 is also connected to the drain pipe four 74. The other end of the drain pipe five 75 is connected to the lower end of the respirator 7. A drain stop valve seven 751 is connected to the drain pipe five 75. Both the drain stop valve six 741 and the drain stop valve seven 751 are pneumatic ball valves. The drain stop valve six 741 and the drain stop valve seven 751 are respectively signal-connected to the PLC central control cabinet. A temperature measuring element four 77 is also arranged on the drain pipe six 76. The temperature measuring element four 77 is arranged between the drain pipe four 74, the drain pipe five 75 and the thermostatic steam trap two 78.

[0063] The water temperature measured by the temperature measuring element 77 of the drain pipe 76 is the lowest temperature point in the circulation loop of the entire distribution device. During the sterilization operation, when the heat exchanger 4 circulates and heats the injection water 100 to 98 °C in the storage tank 1 through the high-temperature industrial steam 200, the breathing cut-off valve 61 is in the open state at this time, and the PLC central controller controls the exhaust cut-off valve 731 and the supply cut-off valve 723 to close, and the drain cut-off valve 741 and the drain cut-off valve 751 to open. Continue to use the industrial steam 200 to perform secondary heating on the injection water 100. When the temperatures detected by the temperature measuring element 17, the temperature measuring element 38, the temperature measuring element 51, and the temperature measuring element 77 are all higher than 121 °C, start the sterilization timing, and the holding time is 60 min, so as to realize the superheated water sterilization of the injection water 100 in the distribution device, and through the reverse circulation of the steam generated when the injection water 100 is heated to the superheated state, the sterilization of the respirator 7 is realized. When the sterilization is completed, the heat exchanger 4 cools the injection water 100 in the distribution device. When the temperature and pressure in the storage tank 1 are lower than the set value, the PLC central controller controls the exhaust cut-off valve 731 and the supply cut-off valve 723 to open, and the respirator 7 works normally. Sterilizing the respirator 7 in this way can save costs, and the energy consumed is only about 30% of that of using pure steam sterilization. At the same time, the operation is simple, the detection is convenient, the accuracy is high, and the sterilization effect is stable. The drain pipe 76 provided with the thermostatic steam trap 78 can timely discharge the accumulated liquid and non-condensable gas in the respirator 7 and the pipeline connected thereto from the distribution device.

[0064] A main pipe cut-off valve 56 is also provided on the main pipe 5. Both the main pipe cut-off valve 21 and the main pipe cut-off valve 56 are pneumatic diaphragm valves, and both the main pipe cut-off valve 21 and the main pipe cut-off valve 56 are electrically connected to the PLC central control cabinet. A main pipe cut-off valve 32 and a main pipe cut-off valve 35 are also provided on the main pipe 3. The main pipe cut-off valve 32 is located between the storage tank 1 and the circulation pump 33, and the main pipe cut-off valve 35 is located between the circulation pump 33 and the water use pipe 36. Both the main pipe cut-off valve 32 and the main pipe cut-off valve 35 are manual diaphragm valves.

[0065] The circulation pump 33 includes a variable-frequency motor 331. The variable-frequency motor 331 is electrically connected to the PLC central control cabinet. A vortex flowmeter 54 is connected and provided on the main pipe 5. The vortex flowmeter 54 is electrically connected to the PLC central control cabinet, and the vortex flowmeter 54 is signal-connected to the variable-frequency motor 331. A conductivity sensor 53 and a TOC sensor 52 are also provided on the main pipe 5. Both the conductivity sensor 53 and the TOC sensor 52 are electrically connected to the PLC central control cabinet. The staff can monitor the flow rate of the injection water 100 in the entire distribution device through the vortex flowmeter 54, and can monitor the qualification rate of the injection water 100 flowing back into the storage tank 1 in real time through the conductivity sensor 53 and the TOC sensor 52.

[0066] On the second main pipe 3, a waste discharge pipe 31 and a waste discharge pipe 37 are also connected and arranged. The waste discharge pipe 31 is located between the outlet and the circulation pump 33, and the waste discharge pipe 37 is located between the circulation pump 33 and the water supply pipe 36. A waste discharge stop valve 311 and a waste discharge stop valve 371 are respectively arranged on the waste discharge pipe 31 and the waste discharge pipe 37. On the third main pipe 5, a waste discharge pipe 55 is also connected and arranged. A waste discharge stop valve 551 is also arranged on the waste discharge pipe 55. A waste discharge pipe 332 is connected to the circulation pump 33. A waste discharge stop valve 3321 is arranged on the waste discharge pipe 332. The ends of the waste discharge pipe 31, the waste discharge pipe 37, the waste discharge pipe 55, and the waste discharge pipe 332 are all connected to the drain outlet 500 of the clean room. The waste discharge stop valve 311, the waste discharge stop valve 371, and the waste discharge stop valve 551 are all pneumatic diaphragm valves, and the waste discharge stop valve 311, the waste discharge stop valve 371, and the waste discharge stop valve 551 are respectively electrically connected to the PLC central control cabinet. The waste discharge stop valve 3321 is a manual diaphragm valve. The staff can clean the entire distribution device by controlling the main pipe control valve 1, the main pipe control valve 2, the main pipe control valve 3, the main pipe control valve 4, and the waste discharge stop valve 311, the waste discharge stop valve 371, the waste discharge stop valve 551, and the waste discharge stop valve 3321.

[0067] Sampling pipes 8 are connected and arranged on both the third main pipe 5 and the second main pipe 3. A sterile sampling valve 81 is arranged on any one of the sampling pipes 8.

[0068] A third pressure measuring element 34 is also arranged on the second main pipe 3. The third pressure measuring element 34 is electrically connected to the PLC central control cabinet, and one third pressure measuring element 34 is arranged before and after the water supply pipe 36 respectively. In actual work, the staff can monitor the total water output of the water supply pipe 36 by monitoring the pressure difference between the two third pressure measuring elements 34.

[0069] The implementation principle of an injection water distribution device with a superheated water sterilization function in an embodiment of this application is as follows: During normal operation, the main pipe stop valve 21, the main pipe stop valve 32, the main pipe stop valve 35, the main pipe stop valve 56, the breathing stop valve 61, the drain stop valve six, and the drain stop valve 751 are all in the open state, and the rest of the valve bodies are all in the closed state. The injection water 100 produced by the distillation equipment is sprayed into the storage tank 1 through the first main pipe 2 and the water inlet pipe 11. When the liquid level measuring element 16 detects that the liquid level of the injection water 100 in the storage tank 1 is higher than the preset position, the circulation pump 33 is started. The injection water 100 enters the main passage 41 of the heat exchanger 4 through the second main pipe 3, and returns to the water inlet pipe 11 through the third main pipe 5, and then is sprayed into the storage tank 1 from the spray ball 12 again. The staff opens the water stop valve 361 on each water supply pipe 36 to use the injection water 100.

[0070] When secondary sterilization is required, the staff close each water cut-off valve 361, open the supply cut-off valve II 443 and the drain cut-off valve I 451. The high-temperature industrial steam 200 enters the heat exchange path 42 of the heat exchanger 4 through the supply pipe I 44, the pipe II 434 and the pipe I 43, so as to heat the injection water 100 in the main path 41. The PLC central control cabinet can adjust the gas flow rate through the pipe control valve 435 according to the heating rate of the injection water 100 detected by the temperature measuring element III 51 in the main pipe III 5. At the same time, the condensed industrial steam 200 is discharged from the heat exchanger 4 through the drain pipe I 45. Meanwhile, the staff close the exhaust cut-off valve 731 and the supply cut-off valve VIII 723. The injection water 100 heated by the heat exchanger 4 generates high-temperature steam to sterilize the respirator 7. When the temperature values transmitted back to the PLC central control cabinet by the temperature measuring element I 17, the temperature measuring element II 38, the temperature measuring element III 51 and the temperature measuring element IV 77 are all higher than 121°C, the sterilization timing starts. After 60 minutes of heat preservation, the sterilization of the distribution device is completed.

[0071] After the sterilization is completed, the staff open the exhaust cut-off valve 731 and the supply cut-off valve VIII 723, and close the supply cut-off valve II 443 and the drain cut-off valve I 451. First, open the drain cut-off valve V 491, and then open the supply cut-off valve IV 463. The cooling water 300 enters the heat exchange path 42 of the heat exchanger 4 through the supply pipe II 46 to cool the injection water 100 in the main path 41. After the injection water 100 in the distribution device is cooled to above 70°C, the staff close the supply cut-off valve IV 463 and open the supply cut-off valve VI 483. The compressed air 400 passes through the supply pipe III 48 and the pipe I 43, so that the residual cooling water in the heat exchange path 42 of the heat exchanger 4 is discharged along the drain pipe III 49. The circulation pump 33 drives the injection water 100 above 70°C to circulate in the distribution device.

[0072] The injection water distribution device with the superheated water sterilization function has the effects of convenient detection, high accuracy, simple control process, stable sterilization effect, high safety, high automation degree and low operation cost.

[0073] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An injection water distribution device with a superheated water sterilization function, characterized in that, include: A main pipe (2) connected to the distillation device, the main pipe (2) being provided with a main pipe stop valve (21), an end of the main pipe (2) facing away from the distillation device being connected to a storage tank (1), and the storage tank (1) being further connected to a main pipe (5); The heat exchanger (4) comprises a main passage (41) and a heat exchange passage (42); one end of the main pipe (5) facing away from the storage tank (1) is connected to the main passage (41); one end of the main pipe (41) facing away from the main pipe (5) is also connected to the main pipe (3); one end of the main pipe (3) facing away from the heat exchanger (4) is connected to the storage tank (1); both ends of the heat exchange passage (42) are respectively connected to a supply pipe (44) for supplying industrial steam (200) and a supply pipe (45) for discharging condensed steam. a first drainage pipe (45) for industrial steam (200); two ends of the heat exchange passage (42) are respectively connected to a second supply pipe (46) for supplying cooling water (300) and a second drainage pipe (47) for discharging cooling water (300); a second supply stop valve (443) and a fourth supply stop valve (463) are respectively provided on the first supply pipe (44) and the second supply pipe (46); and a first drainage stop valve (451) and a third drainage stop valve (471) are respectively provided on the first drainage pipe (45) and the second drainage pipe (47); A plurality of water pipes (36) connected to the main pipe 2 (3), each of the water pipes (36) being provided with a water shut-off valve (361); A circulation pump (33), the circulation pump (33) being connected and arranged on the second main pipe (3); A temperature measuring element 1 (17), a temperature measuring element 2 (38) and a temperature measuring element 3 (51), wherein the temperature measuring element 1 (17) is arranged in the storage tank (1), and the temperature measuring element 2 (38) and the temperature measuring element 3 (51) are respectively arranged at two ends of a main passage (41) of the heat exchanger (4); Indicator screen, the temperature measuring element 1 (17), the temperature measuring element 2 (38) and the temperature measuring element 3 (51) are all electrically connected to the indicator screen.

2. The injection water distribution device with superheated water sterilization function according to claim 1, wherein: The upper end of the heat exchange passage (42) is also connected to a supply pipe three (48) for supplying compressed air (400), and a supply stop valve six (483) is provided on the supply pipe three (48).

3. The injection water distribution device with superheated water sterilization function according to claim 2, characterized in that: The lower end of the heat exchange passage (42) is also connected to a drainage pipe three (49), and a drainage stop valve five (491) is provided on the drainage pipe three (49).

4. A water injection distribution device with superheated water sterilization function according to claim 1, characterized in that: It also includes a PLC central control cabinet, wherein the temperature measuring element 1 (17), the temperature measuring element 2 (38), and the temperature measuring element 3 (51) are electrically connected to the PLC central control cabinet respectively, the indication screen is arranged in the PLC central control cabinet, the indication screen is electrically connected to the PLC central control cabinet, and the supply stop valve 2 (443), the supply stop valve 4 (463), the drain stop valve 1 (451) and the drain stop valve 3 (471) are all electrically connected to the PLC central control cabinet.

5. The injection water distribution device with superheated water sterilization function according to claim 4, characterized in that: The storage tank (1) is provided with a respirator (7), the upper end of the respirator (7) is provided with a respirator tube (71) connected to the outside, the lower end of the respirator (7) is provided with a connecting tube, the end of the connecting tube away from the respirator (7) is provided with the storage tank (1), the lower end of the respirator (7) is also provided with a drain pipe four (74) for discharging pure steam after condensation, the drain pipe four (74) is provided with a drain stop valve six (741), a temperature measuring element four (77) is provided in the drain pipe, and the temperature measuring element four (77) is electrically connected to the PLC central control cabinet.

6. The injection water distribution device with superheated water sterilization function according to claim 5, wherein: The breathing tube (71) is also connected to a supply tube four (72) for supplying compressed air (400), and a supply stop valve eight (723) is provided on the supply tube four (72), and the supply stop valve eight (723) is electrically connected to the PLC central control cabinet.

7. The injection water distribution device with superheated water sterilization function according to claim 6, characterized in that: A thermostatic steam trap 2 (78) is provided at the end of the drainage pipe 4 (74).

8. The injection water distribution device with superheated water sterilization function according to claim 4, characterized in that: The main pipe 3 (5) is connected to a vortex flowmeter (54), the vortex flowmeter (54) is electrically connected to a PLC central control cabinet, the circulating pump (33) comprises a variable frequency motor (331), the variable frequency motor (331) is electrically connected to the PLC central control cabinet, and the vortex flowmeter (54) is signal-connected to the variable frequency motor (331).

9. The injection water distribution device with superheated water sterilization function according to claim 4, wherein: A liquid level measuring element (16) for measuring the liquid level is arranged in the storage tank (1), and the liquid level measuring element (16) is connected to a PLC central control cabinet via a signal.

10. The injection water distribution device with superheated water sterilization function according to claim 4, characterized in that: The main pipe 3 (5) is also provided with a TOC measuring element and a conductivity measuring element, and the TOC measuring element and the conductivity measuring element are respectively connected to the PLC central control cabinet signal.

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