Multi-station perfluorohexanone quantitative filling system

Abstract

The utility model discloses a multi-station perfluorohexanone quantitative filling system which comprises a filling operation table, a filling station area, a nitrogen drying device and a medicament extraction assembly. The utility model further discloses a multi-station perfluorohexanone quantitative filling method. The multi-station perfluorohexanone quantitative filling method comprises the following steps that S1, an inspection stage before filling is conducted; s2, a nitrogen replacement stage; s3, a medicament filling stage; s4, a nitrogen filling stage; and S5, a filling completion stage. According to the device, the filling process can be automatically completed through PLC control; a connector of the filling steel cylinder is a quick-release connector, and after filling is completed, the filling steel cylinder can be quickly replaced for next filling; according to the device, the water content in the perfluorohexanone filling process is controlled in two aspects, the overall function is complete, and the practicability is high.

Description

Technical Field

[0001] This utility model relates to the field of filling equipment technology, and more specifically, it relates to a multi-station perfluorohexanone quantitative filling system. Background Technology

[0002] Perfluorohexanone is a new generation of environmentally friendly clean fire extinguishing agent that is transparent, colorless, odorless, and insulating. Due to its good fire extinguishing performance, large safety margin, and excellent environmental performance, it is an ideal substitute for Halon-1301, Halon-1211, and HFC-227ea.

[0003] Perfluorohexanone readily absorbs moisture and reacts to produce acidic substances. Prolonged storage can corrode storage containers and valves, causing damage or leakage to the fire extinguishing product. In severe cases, it can even lead to a physical explosion, causing injury and damage. Therefore, controlling the moisture content of perfluorohexanone fire extinguishing products is crucial, directly impacting both the product's safety and the user's safety.

[0004] Therefore, perfluorohexanone fire extinguishing agents have strict requirements regarding moisture content, and external moisture should be prevented from entering during filling. However, there are currently no clear filling and pressurization standards for perfluorohexanone fire extinguishing agents in China. Furthermore, a review of relevant patents for perfluorohexanone filling devices reveals that most patents lack measures to ensure the moisture content of the perfluorohexanone fire extinguishing agent during filling. Moreover, the filling method for perfluorohexanone involves pressurizing the perfluorohexanone raw material container. The metal containers used by domestic perfluorohexanone manufacturers for sale in China are not pressure vessels themselves, and their safe pressure-bearing capacity is only 0.1 MPa. This method poses a safety hazard. Therefore, this utility model proposes a multi-station perfluorohexanone quantitative filling system. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a multi-station perfluorohexanone quantitative filling system.

[0006] To solve the above-mentioned technical problems, the purpose of this utility model is as follows: The multi-station perfluorohexanone quantitative filling system involved in this utility model includes a filling operation table, a filling station area, a nitrogen drying device, and a drug extraction component.

[0007] The filling control panel includes a compressed air supply pipe, a pharmaceutical supply pipe, a nitrogen supply pipe, a pneumatic three-way L-shaped ball valve at station one, and a pneumatic three-way L-shaped ball valve at station two. The pneumatic three-way L-shaped ball valve at station one is connected to the pharmaceutical supply pipe via pipe one, and a normally closed high-pressure solenoid valve for the pharmaceutical supply at station one is connected in series on pipe one. The pneumatic three-way L-shaped ball valve at station one is connected to the nitrogen supply pipe via pipe two, and a normally closed high-pressure nitrogen solenoid valve for station one is connected in series on pipe two. The pneumatic three-way L-shaped ball valve at station one is connected to the nitrogen supply pipe via pipe two. The third channel is connected to the compressed air supply pipe; the second station pneumatic three-way L-shaped ball valve is connected to the agent supply pipe through the fourth channel, and the second station agent high-pressure normally closed solenoid valve is connected in series on the fourth channel; the second station pneumatic three-way L-shaped ball valve is connected to the nitrogen supply pipe through the fifth channel, and the second station nitrogen high-pressure normally closed solenoid valve is connected in series on the fifth channel; the second station pneumatic three-way L-shaped ball valve is connected to the compressed air supply pipe through the sixth channel; a agent pipeline vacuum shut-off valve is provided between the agent supply pipe and the nitrogen supply pipe;

[0008] The filling station area includes a cylinder filling station 1 and a weighing station 1 electronic scale for cylinder filling. The cylinder filling station 1 and the pneumatic three-way L-shaped ball valve of station 1 are connected in series via pipe 7, and a cylinder filling shut-off valve of station 1 is connected in series on pipe 7. The filling station area also includes a cylinder filling station 2 and a weighing station 2 electronic scale for cylinder filling. The cylinder filling station 2 and the pneumatic three-way L-shaped ball valve of station 2 are connected in series via pipe 8, and a cylinder filling shut-off valve of station 2 is connected in series on pipe 8.

[0009] The nitrogen drying device includes a pipeline nine that supplies compressed gas at one end and connects to a nitrogen delivery pipe at the other end. A dust filter for the drying bottle, a nitrogen drying bottle, a nitrogen inlet pressure regulating valve for the drying cabinet, a nitrogen inlet shut-off valve for the drying cabinet, and a nitrogen inlet pressure gauge for the drying cabinet are connected in series on the pipeline nine.

[0010] The reagent extraction assembly includes a reagent tank 1 and a reagent tank 2. A reagent extraction manifold is connected to the reagent delivery pipe. Pipe 10 connects the reagent extraction manifold to the reagent tank 1, and pipe 11 connects it to the reagent tank 2. A reagent pipeline shut-off valve for the reagent tank 1 is connected in series on pipe 10, and a reagent pipeline shut-off valve for the reagent tank 2 is connected in series on pipe 11. A reagent tank pressure replenishment manifold is connected to the nitrogen delivery pipe. Pipe 12 connects the reagent tank pressure replenishment manifold to the reagent tank 1, and pipe 13 connects it to the reagent tank 2. A nitrogen pipeline shut-off valve for the reagent tank 1 is connected in series on pipe 12, and a nitrogen pipeline shut-off valve for the reagent tank 2 is connected in series on pipe 13.

[0011] The present invention is further configured such that: a vacuum pump is provided at the end of the agent delivery pipe that is not connected to the agent extraction and collection pipe, and a vacuum pressure gauge and a nitrogen pipeline vacuum shut-off valve are connected in series on the agent delivery pipe near the vacuum pump.

[0012] The present invention is further configured such that: a pipe fourteen close to the vacuum pump is connected to the drug delivery pipe, and a pressure relief shut-off valve is connected in series on the pipe fourteen.

[0013] The present invention is further configured such that: the input end of the compressed air source delivery pipe is provided with a drive air source pipeline shut-off valve, a drive air source pipeline pressure regulating valve, a drive air source pipeline pressure gauge, and an oil-water separator pneumatic dual unit.

[0014] The present invention is further configured such that: a pressure gauge for replenishing pressure of the medicine tank, a pressure regulating valve for replenishing pressure of the medicine tank, a second pressure gauge, a normally closed solenoid valve for replenishing pressure of the medicine tank pipeline, and a safety valve for replenishing pressure of the medicine tank are connected in series on the medicine delivery pipe on one side of the nitrogen drying device; and a normally closed solenoid valve for drying nitrogen pipeline is connected in series on the medicine delivery pipe on the other side of the nitrogen drying device.

[0015] The present invention is further configured such that: a pipe fifteen is connected in series between the compressed air source delivery pipe and the drug delivery pipe, and a ZB05T refrigerant booster pump is connected in series on the pipe fifteen.

[0016] This utility model also relates to a multi-station perfluorohexanone quantitative filling method, including the following steps:

[0017] S1. Pre-filling inspection stage: Check that all valves on the control panel are closed and check the pressure on the control panel. There is no pressure during the preparation stage. If there is pressure, open the pressure relief valve to release the pressure and then close it.

[0018] S2. Nitrogen replacement stage:

[0019] S2.1 Turn on the power switch of the cylinder scale and check that the display shows "0". If the display shows weight data, you need to zero it.

[0020] S2.2 Use an electric crane to lift the gas cylinder onto the gas cylinder scale and confirm that the tare weight displayed on the monitor is consistent with the tare weight printed on the gas cylinder label. If there is a discrepancy, the cause must be found before filling.

[0021] S2.3 Connect the filling port of the cylinder valve to the filling connector;

[0022] S2.4 Open the normally closed solenoid valves for nitrogen and chemicals at workstations one and two, as well as the vacuum shut-off valves for the chemical pipeline, the vacuum shut-off valve for the nitrogen pipeline, and the cylinder filling shut-off valves at workstations one and two.

[0023] S2.5 Start the vacuum pump, pump to -0.098Mpa, then turn off the vacuum pump and close the vacuum shut-off valve on the nitrogen pipeline;

[0024] S2.6 Open the nitrogen inlet shut-off valve of the drying cabinet and the normally closed solenoid valve of the chemical tank pressure replenishment pipeline. Adjust the nitrogen inlet pressure regulating valve of the drying cabinet and the pressure regulating valve of the chemical tank pressure replenishment pipeline respectively so that the pressure displayed by the nitrogen inlet pressure gauge of the drying cabinet is within 8-10 MPa and the pressure displayed by the pressure gauge of the chemical tank pressure replenishment pipeline is within 0.08-0.01 MPa. Then close the normally closed solenoid valve of the chemical tank pressure replenishment pipeline.

[0025] S2.7 First, open the normally closed solenoid valve of the dry nitrogen pipeline to replace nitrogen with 0.5 MPa. Then, open the shut-off valve of the drive gas source pipeline, adjust the pressure reducing valve of the drive gas source pipeline so that the pressure displayed on the pressure gauge of the drive gas source pipeline is within 0.8-0.9 MPa. Then, close the shut-off valve of the drive gas source pipeline and finally close the normally closed solenoid valve of the dry nitrogen pipeline.

[0026] S2.8 Check for leaks at the bottle valve connection;

[0027] S2.9 Open the pressure relief shut-off valve to release nitrogen gas, and close the pressure relief shut-off valve when the pressure drops to 0.1 MPa;

[0028] S2.10 Open the nitrogen pipeline vacuum shut-off valve, start the vacuum pump, pump to -0.098Mpa vacuum, then turn off the vacuum pump and close the nitrogen pipeline vacuum shut-off valve.

[0029] S2.11 Close the vacuum shut-off valve of the chemical pipeline, the nitrogen gas and chemical normally closed solenoid valves of stations one and two;

[0030] S3. Drug filling stage:

[0031] S3.1 First, install the siphon tube assembly onto the perfluorohexanone canister, and then securely connect the male end of the quick-connect fitting of the siphon tube assembly to the female end of the quick-connect fitting of the filling system.

[0032] S3.2 Open the normally closed solenoid valve of the repressurization pipeline of the reagent tank and open the shut-off valve of the nitrogen repressurization pipeline of reagent tank 1 and 2. Confirm whether the pressure displayed on the repressurization pressure gauge of the reagent tank is within 0.08-0.1 MPa. If not, adjust the pressure regulating valve of the repressurization pressure of the reagent tank to make the repressurization pressure of the reagent tank within the safe range.

[0033] S3.3 Open the normally closed solenoid valve of the dry nitrogen pipeline, the shut-off valve of the drive gas source pipeline, and confirm whether the pressure displayed on the pressure gauge of the drive gas source pipeline is within 0.8-0.9 MPa. If not, adjust the pressure reducing valve of the drive gas source pipeline to bring the pressure of the drive gas source pipeline within the safe range.

[0034] S3.4 First, open the shut-off valves of the first and second reagent pipelines of the reagent tank and the high-pressure normally closed solenoid valves of the first and second workstations. Then, open the solenoid valves of the first and second workstations' pneumatic three-way L-type ball valves to control the opening of the first and second workstations' pneumatic three-way L-type ball valves respectively.

[0035] S3.5 The normally closed solenoid valve of the ZB05T refrigerant booster pump is used to start the ZB05T refrigerant booster pump and fill the agent. The weighing data of the cylinder scales at workstations 1 and 2 is fed back in real time. When the agent is filled to the set value, the pneumatic three-way L-type ball valves at workstations 1 and 2 are controlled to close according to the real-time data fed back by the cylinder scales at workstations 1 and 2, and switch to the nitrogen filling pipeline.

[0036] S4. Nitrogen filling stage:

[0037] S4.1 When the pneumatic three-way L-type ball valves of workstation 1 and 2 control the corresponding pneumatic three-way L-type ball valves to close based on the real-time data fed back by the cylinder scales of workstation 1 and 2, and switch to the nitrogen filling pipeline, the high-pressure normally closed solenoid valves of nitrogen of workstation 1 and 2 are opened to carry out nitrogen filling.

[0038] After the pressure gauges of cylinders at workstations 1 and 2 report that the nitrogen in the corresponding cylinder group has been filled to the set pressure, the normally closed high-pressure solenoid valves of nitrogen at workstations 1 and 2 and the cylinder filling shut-off valves at workstations 1 and 2 are closed.

[0039] S4.3 Close the filling port of the cylinder valve;

[0040] S4.4 Shake the cylinder until the pressure inside the cylinder stabilizes; when the pressure is lower than the set pressure, repeat steps one to three.

[0041] S5. Filling completion stage: Depressurize the nitrogen pipeline; remove the filling connector.

[0042] In summary, the present invention has the following beneficial effects:

[0043] 1. This device can automatically complete the filling process under PLC control;

[0044] 2. The filling cylinder connector uses a quick-release connector, which allows for quick replacement of the filling cylinder after filling and subsequent filling.

[0045] 3. This device controls the moisture content of perfluorohexanone during the filling process through the following two aspects: a. Controlling the moisture content of the reagent during the filling process: quick-release connectors are used for the reagent tank joints to reduce the contact between the reagent and air during the replacement of reagent tanks; b. Controlling the moisture content of nitrogen during the filling process: activated alumina is used to dry the nitrogen and absorb trace amounts of moisture in the nitrogen; before filling, a vacuum machine is used to extract air from the pipeline and cylinder. Attached Figure Description

[0046] Figure 1 This utility model is a schematic diagram illustrating the piping of a filling system;

[0047] Figure 2 This is a schematic diagram illustrating the filling operation table of this utility model;

[0048] Figure 3 This is a schematic diagram illustrating the filling station area of ​​this utility model;

[0049] Figure 4 This is a schematic diagram illustrating the nitrogen drying device of this utility model;

[0050] Figure 5 This is a schematic diagram illustrating the drug extraction component of this utility model. Detailed Implementation

[0051] To enable those skilled in the art to better understand the technical solution of this utility model, the preferred embodiments of this utility model are described below in conjunction with specific examples. However, it should be understood that these descriptions are only for further illustrating the features and advantages of this utility model, and not for limiting the patent claims of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.

[0052] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.

[0053] Example 1

[0054] See Figures 1 to 5 As shown, the multi-station perfluorohexanone quantitative filling system involved in this embodiment includes a filling operation table 100, a filling station area 200, a nitrogen drying device 300, and a drug extraction component 400.

[0055] The filling control panel 100 includes a compressed air supply pipe 101, a reagent supply pipe 102, a nitrogen supply pipe 103, a pneumatic three-way L-shaped ball valve 104 for station one, and a pneumatic three-way L-shaped ball valve 105 for station two. The pneumatic three-way L-shaped ball valve 104 for station one is connected to the reagent supply pipe 102 via a pipe, and a high-pressure normally closed solenoid valve 106 for station one is connected in series on the pipe. The pneumatic three-way L-shaped ball valve 104 for station one is connected to the nitrogen supply pipe 103 via a pipe, and a high-pressure normally closed solenoid valve 107 for station one is connected in series on the pipe. The pneumatic three-way L-shaped ball valve 104 for station one is connected to the nitrogen supply pipe 103 via a pipe, and a high-pressure normally closed solenoid valve 107 for station one is connected in series on the pipe. Pipeline 3 is connected to compressed air supply pipe 101; the pneumatic three-way L-shaped ball valve 105 at workstation 2 is connected to the agent supply pipe 102 via pipe 4, and a high-pressure normally closed solenoid valve 108 for agent at workstation 2 is connected in series on pipe 4; the pneumatic three-way L-shaped ball valve 105 at workstation 2 is connected to the nitrogen supply pipe 103 via pipe 5, and a high-pressure normally closed solenoid valve 109 for nitrogen at workstation 2 is connected in series on pipe 5; the pneumatic three-way L-shaped ball valve 105 at workstation 2 is connected to the compressed air supply pipe 101 via pipe 6; a vacuum shut-off valve 110 for the agent supply pipe is provided between the agent supply pipe 102 and the nitrogen supply pipe 103;

[0056] The filling station area 200 includes a filling station 201 for steel cylinders and a weighing station 202 for steel cylinders. The filling station 201 for steel cylinders is connected in series with the pneumatic three-way L-shaped ball valve at station 1 via a pipe seven. A filling stop valve 203 for steel cylinders at station 1 is connected in series on the pipe seven. The filling station area 200 also includes a filling station 204 for steel cylinders and a weighing station 205 for steel cylinders at station 2. The filling station 204 for steel cylinders is connected in series with the pneumatic three-way L-shaped ball valve at station 2 via a pipe eight. A filling stop valve 206 for steel cylinders at station 2 is connected in series on the pipe eight.

[0057] The nitrogen drying device 300 includes a pipe nine that supplies compressed gas at one end and connects to a nitrogen delivery pipe at the other end. A dust filter device 301 for drying bottles, a nitrogen drying bottle 302, a nitrogen inlet pressure regulating valve 303 for drying cabinet, a nitrogen inlet shut-off valve 304 for drying cabinet, and a nitrogen inlet pressure gauge 305 for drying cabinet are connected in series on the pipe nine.

[0058] The reagent extraction assembly 400 includes a reagent tank 1 401 and a reagent tank 2 402. A reagent extraction manifold 403 is connected to the reagent delivery pipe 102. A pipe 10 connects the reagent extraction manifold 403 to the reagent tank 1 401 and a pipe 11 connects the pipe 10 to the reagent tank 2 402. A reagent tank 1 reagent pipeline shut-off valve 404 is connected in series on the pipe 10, and a reagent tank 2 reagent pipeline shut-off valve 405 is connected in series on the pipe 11. A reagent tank pressure replenishing manifold 406 is connected to the nitrogen delivery pipe 103. A pipe 12 connects the reagent tank 1 401 and a pipe 13 connects the pipe 12 to the reagent tank 2 402. A reagent tank 1 pressure replenishing nitrogen pipeline shut-off valve 407 is connected in series on the pipe 12, and a reagent tank 2 pressure replenishing nitrogen pipeline shut-off valve 408 is connected in series on the pipe 13.

[0059] Furthermore, a vacuum pump 111 is provided at the end of the drug delivery pipe 102 that is not connected to the drug extraction manifold, and a vacuum pressure gauge 112 and a nitrogen pipeline vacuum shut-off valve 113 are connected in series on the drug delivery pipe 102 near the vacuum pump.

[0060] Furthermore, the drug delivery pipe 102 is connected to a pipe fourteen near the vacuum pump, and a pressure relief shut-off valve 114 is connected in series on the pipe fourteen.

[0061] Furthermore, the input end of the compressed air supply pipe 101 is equipped with a drive air supply pipe shut-off valve 115, a drive air supply pipe pressure regulating valve 116, a drive air supply pipe pressure gauge 117, and an oil-water separator pneumatic dual unit 118.

[0062] Furthermore, the agent delivery pipe 102 is connected in series with a agent tank pressure gauge 306, an agent tank pressure regulating valve 307, a pressure gauge 308, a normally closed solenoid valve 309 for the agent tank pressure supply line, and an agent tank pressure safety valve 310, all located on one side of the nitrogen drying device 300; the agent delivery pipe 102 is also connected in series with a normally closed solenoid valve 311 for the drying nitrogen supply line, located on the other side of the nitrogen drying device 300.

[0063] Furthermore, a pipe fifteen is connected in series between the compressed air source delivery pipe 101 and the agent delivery pipe 102, and a ZB05T refrigerant booster pump 119 is connected in series on the pipe fifteen.

[0064] This embodiment also relates to a multi-station perfluorohexanone quantitative filling method, including the following steps:

[0065] S1. Pre-filling inspection stage: Check that all valves on the control panel are closed and check the pressure on the control panel. There is no pressure during the preparation stage. If there is pressure, open the pressure relief valve to release the pressure and then close it.

[0066] S2. Nitrogen replacement stage:

[0067] S2.1 Turn on the power switch of the cylinder scale and check that the display shows "0". If the display shows weight data, you need to zero it.

[0068] S2.2 Use an electric crane to lift the gas cylinder onto the gas cylinder scale and confirm that the tare weight displayed on the monitor is consistent with the tare weight printed on the gas cylinder label. If there is a discrepancy, the cause must be found before filling.

[0069] S2.3 Connect the filling port of the cylinder valve to the filling connector;

[0070] S2.4 Open the normally closed solenoid valves for nitrogen and chemicals at workstations one and two, as well as the vacuum shut-off valves for the chemical pipeline, the vacuum shut-off valve for the nitrogen pipeline, and the cylinder filling shut-off valves at workstations one and two.

[0071] S2.5 Start the vacuum pump, pump to -0.098Mpa, then turn off the vacuum pump and close the vacuum shut-off valve on the nitrogen pipeline;

[0072] S2.6 Open the nitrogen inlet shut-off valve of the drying cabinet and the normally closed solenoid valve of the chemical tank pressure replenishment pipeline. Adjust the nitrogen inlet pressure regulating valve of the drying cabinet and the pressure regulating valve of the chemical tank pressure replenishment pipeline respectively so that the pressure displayed by the nitrogen inlet pressure gauge of the drying cabinet is within 8-10 MPa and the pressure displayed by the pressure gauge of the chemical tank pressure replenishment pipeline is within 0.08-0.01 MPa. Then close the normally closed solenoid valve of the chemical tank pressure replenishment pipeline.

[0073] S2.7 First, open the normally closed solenoid valve of the dry nitrogen pipeline to replace nitrogen with 0.5 MPa. Then, open the shut-off valve of the drive gas source pipeline, adjust the pressure reducing valve of the drive gas source pipeline so that the pressure displayed on the pressure gauge of the drive gas source pipeline is within 0.8-0.9 MPa. Then, close the shut-off valve of the drive gas source pipeline and finally close the normally closed solenoid valve of the dry nitrogen pipeline.

[0074] S2.8 Check for leaks at the bottle valve connection;

[0075] S2.9 Open the pressure relief shut-off valve to release nitrogen gas, and close the pressure relief shut-off valve when the pressure drops to 0.1 MPa;

[0076] S2.10 Open the nitrogen pipeline vacuum shut-off valve, start the vacuum pump, pump to -0.098Mpa vacuum, then turn off the vacuum pump and close the nitrogen pipeline vacuum shut-off valve.

[0077] S2.11 Close the vacuum shut-off valve of the chemical pipeline, the nitrogen gas and chemical normally closed solenoid valves of stations one and two;

[0078] S3. Drug filling stage:

[0079] S3.1 First, install the siphon tube assembly onto the perfluorohexanone canister, and then securely connect the male end of the quick-connect fitting of the siphon tube assembly to the female end of the quick-connect fitting of the filling system.

[0080] S3.2 Open the normally closed solenoid valve of the repressurization pipeline of the reagent tank and open the shut-off valve of the nitrogen repressurization pipeline of reagent tank 1 and 2. Confirm whether the pressure displayed on the repressurization pressure gauge of the reagent tank is within 0.08-0.1 MPa. If not, adjust the pressure regulating valve of the repressurization pressure of the reagent tank to make the repressurization pressure of the reagent tank within the safe range.

[0081] S3.3 Open the normally closed solenoid valve of the dry nitrogen pipeline, the shut-off valve of the drive gas source pipeline, and confirm whether the pressure displayed on the pressure gauge of the drive gas source pipeline is within 0.8-0.9 MPa. If not, adjust the pressure reducing valve of the drive gas source pipeline to bring the pressure of the drive gas source pipeline within the safe range.

[0082] S3.4 First, open the shut-off valves of the first and second reagent pipelines of the reagent tank and the high-pressure normally closed solenoid valves of the first and second workstations. Then, open the solenoid valves of the first and second workstations' pneumatic three-way L-type ball valves to control the opening of the first and second workstations' pneumatic three-way L-type ball valves respectively.

[0083] S3.5 The normally closed solenoid valve of the ZB05T refrigerant booster pump is used to start the ZB05T refrigerant booster pump and fill the agent. The weighing data of the cylinder scales at workstations 1 and 2 is fed back in real time. When the agent is filled to the set value, the pneumatic three-way L-type ball valves at workstations 1 and 2 are controlled to close according to the real-time data fed back by the cylinder scales at workstations 1 and 2, and switch to the nitrogen filling pipeline.

[0084] S4. Nitrogen filling stage:

[0085] S4.1 When the pneumatic three-way L-type ball valves of workstation 1 and 2 control the corresponding pneumatic three-way L-type ball valves to close based on the real-time data fed back by the cylinder scales of workstation 1 and 2, and switch to the nitrogen filling pipeline, the high-pressure normally closed solenoid valves of nitrogen of workstation 1 and 2 are opened to carry out nitrogen filling.

[0086] After the pressure gauges of cylinders at workstations 1 and 2 report that the nitrogen in the corresponding cylinder group has been filled to the set pressure, the normally closed high-pressure solenoid valves of nitrogen at workstations 1 and 2 and the cylinder filling shut-off valves at workstations 1 and 2 are closed.

[0087] S4.3 Close the filling port of the cylinder valve;

[0088] S4.4 Shake the cylinder until the pressure inside the cylinder stabilizes; when the pressure is lower than the set pressure, repeat steps one to three.

[0089] S5. Filling completion stage: Depressurize the nitrogen pipeline; remove the filling connector.

[0090] In this implementation scheme, an electric pneumatic drive straight-through valve can be used to replace the high-pressure electromagnetic normally closed solenoid valve, which helps to improve filling efficiency.

[0091] Unless otherwise specified, in this utility model, terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the actual orientation or positional relationship shown. They are used only for the convenience of describing this utility model 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, the terms used to describe orientation or positional relationships in this utility model are for illustrative purposes only and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the embodiments and according to the specific circumstances.

[0092] Unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" in this utility model 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 direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0093] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A multi-station perfluorohexanone quantitative filling system, characterized in that, Includes a filling control panel, a filling station area, a nitrogen drying device, and a reagent extraction assembly; The filling control panel includes a compressed air supply pipe, a pharmaceutical supply pipe, a nitrogen supply pipe, a pneumatic three-way L-shaped ball valve at station one, and a pneumatic three-way L-shaped ball valve at station two. The pneumatic three-way L-shaped ball valve at station one is connected to the pharmaceutical supply pipe via pipe one, and a normally closed high-pressure solenoid valve for the pharmaceutical supply at station one is connected in series on pipe one. The pneumatic three-way L-shaped ball valve at station one is connected to the nitrogen supply pipe via pipe two, and a normally closed high-pressure nitrogen solenoid valve for station one is connected in series on pipe two. The pneumatic three-way L-shaped ball valve at station one is connected to the nitrogen supply pipe via pipe two. The third channel is connected to the compressed air supply pipe; the second station pneumatic three-way L-shaped ball valve is connected to the agent supply pipe through the fourth channel, and the second station agent high-pressure normally closed solenoid valve is connected in series on the fourth channel; the second station pneumatic three-way L-shaped ball valve is connected to the nitrogen supply pipe through the fifth channel, and the second station nitrogen high-pressure normally closed solenoid valve is connected in series on the fifth channel; the second station pneumatic three-way L-shaped ball valve is connected to the compressed air supply pipe through the sixth channel; a agent pipeline vacuum shut-off valve is provided between the agent supply pipe and the nitrogen supply pipe; The filling station area includes a cylinder filling station 1 and a weighing station 1 electronic scale for cylinder filling. The cylinder filling station 1 and the pneumatic three-way L-shaped ball valve of station 1 are connected in series via pipe 7, and a cylinder filling shut-off valve of station 1 is connected in series on pipe 7. The filling station area also includes a cylinder filling station 2 and a weighing station 2 electronic scale for cylinder filling. The cylinder filling station 2 and the pneumatic three-way L-shaped ball valve of station 2 are connected in series via pipe 8, and a cylinder filling shut-off valve of station 2 is connected in series on pipe 8. The nitrogen drying device includes a pipeline nine that supplies compressed gas at one end and connects to a nitrogen delivery pipe at the other end. A dust filter for the drying bottle, a nitrogen drying bottle, a nitrogen inlet pressure regulating valve for the drying cabinet, a nitrogen inlet shut-off valve for the drying cabinet, and a nitrogen inlet pressure gauge for the drying cabinet are connected in series on the pipeline nine. The reagent extraction assembly includes a reagent tank 1 and a reagent tank 2. A reagent extraction manifold is connected to the reagent delivery pipe. Pipe 10 connects the reagent extraction manifold to the reagent tank 1, and pipe 11 connects it to the reagent tank 2. A reagent pipeline shut-off valve for the reagent tank 1 is connected in series on pipe 10, and a reagent pipeline shut-off valve for the reagent tank 2 is connected in series on pipe 11. A reagent tank pressure replenishment manifold is connected to the nitrogen delivery pipe. Pipe 12 connects the reagent tank pressure replenishment manifold to the reagent tank 1, and pipe 13 connects it to the reagent tank 2. A nitrogen pipeline shut-off valve for the reagent tank 1 is connected in series on pipe 12, and a nitrogen pipeline shut-off valve for the reagent tank 2 is connected in series on pipe 13.

2. The multi-station perfluorohexanone quantitative filling system according to claim 1, characterized in that, A vacuum pump is installed at the end of the drug delivery pipe that is not connected to the drug extraction manifold. A vacuum pressure gauge and a nitrogen pipeline vacuum shut-off valve are connected in series on the drug delivery pipe near the vacuum pump.

3. The multi-station perfluorohexanone quantitative filling system according to claim 2, characterized in that, The drug delivery pipe is connected to a pipe fourteen near the vacuum pump, and a pressure relief shut-off valve is connected in series on the pipe fourteen.

4. The multi-station perfluorohexanone quantitative filling system according to claim 3, characterized in that, The input end of the compressed air supply pipe is equipped with a drive air supply pipe shut-off valve, a drive air supply pipe pressure regulating valve, a drive air supply pipe pressure gauge, and an oil-water separator pneumatic dual unit.

5. The multi-station perfluorohexanone quantitative filling system according to claim 4, characterized in that, The reagent delivery pipe is connected in series with a reagent tank pressure gauge, a reagent tank pressure regulating valve, a second pressure gauge, a normally closed solenoid valve for the reagent tank pressure supply line, and a reagent tank pressure safety valve, all located on one side of the nitrogen drying device; the reagent delivery pipe is also connected in series with a normally closed solenoid valve for the drying nitrogen supply line, located on the other side of the nitrogen drying device.

6. The multi-station perfluorohexanone quantitative filling system according to claim 5, characterized in that, A pipe fifteen is connected in series between the compressed air source delivery pipe and the drug delivery pipe, and a ZB05T refrigerant booster pump is connected in series on pipe fifteen.

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