Multi-station perfluorohexanone quantitative filling system and method

Abstract

The invention 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 invention 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] The present invention relates to the technical field of filling equipment, and more specifically, to a multi-station perfluorohexanone quantitative filling system and method. Background Art

[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 easily absorbs water and reacts to produce acidic substances. Long-term storage will corrode storage containers and bottle head valves and other components, causing damage or leakage of fire extinguishing products. In severe cases, physical explosions will occur, causing injuries and damage. Therefore, it is very important to control the moisture content of perfluorohexanone fire extinguishing products in applications, which directly affects the safety of the product itself and its use.

[0004] Therefore, perfluorohexanone fire extinguishing agent has strict requirements on water content, and external water should be avoided during filling. However, there is no clear filling and pressurizing standard for perfluorohexanone fire extinguishing agent in China. In the query of relevant patents of perfluorohexanone filling device, it is found that most patents do not have measures to ensure the water content of perfluorohexanone fire extinguishing agent during filling. The filling method of perfluorohexanone adopts the method of pressurizing the perfluorohexanone raw material barrel for filling. The metal container used by the domestic perfluorohexanone pharmaceutical factory for the perfluorohexanone pharmaceutical sold in China is not a pressure storage container itself, and its safe pressure bearing capacity is only 0.1MPa. This method has safety hazards. Based on this, the present invention proposes a multi-station perfluorohexanone quantitative filling system and method. Summary of the invention

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

[0006] In order to solve the above technical problems, the object of the present invention is achieved as follows: a multi-station perfluorohexanone quantitative filling system involved in the present invention comprises a filling operation table, a filling station area, a nitrogen drying device and a medicine extraction component;

[0007] The filling operation table includes a compressed air source delivery pipe, a medicine delivery pipe, a nitrogen delivery pipe, a pneumatic three-way L-type ball valve at station one, and a pneumatic three-way L-type ball valve at station two; the pneumatic three-way L-type ball valve at station one is connected to the medicine delivery pipe through a pipe one, and a medicine high-pressure normally closed solenoid valve at station one is connected in series to the pipe one, the pneumatic three-way L-type ball valve at station one is connected to the nitrogen delivery pipe through a pipe two, and a nitrogen high-pressure normally closed solenoid valve at station one is connected in series to the pipe two, and the pneumatic three-way L-type ball valve at station one is connected to the nitrogen delivery pipe through a pipe two. Pipe 3 is connected to the compressed air source delivery pipe; the station 2 pneumatic three-way L-type ball valve is connected to the agent delivery pipe through pipe 4, and the station 2 agent high-pressure normally closed solenoid valve is connected in series to the pipe 4; the station 2 pneumatic three-way L-type ball valve is connected to the nitrogen delivery pipe through pipe 5, and the station 2 nitrogen high-pressure normally closed solenoid valve is connected in series to the pipe 5; the station 2 pneumatic three-way L-type ball valve is connected to the compressed air source delivery pipe through pipe 6, and a vacuum stop valve for the agent pipeline is provided between the agent delivery pipe and the nitrogen delivery pipe;

[0008] The filling station area includes a station one filling cylinder and a station one electronic scale for weighing the filling cylinder at station one, the filling cylinder at station one and the pneumatic three-way L-shaped ball valve at station one are connected in series via a pipeline seven, and the pipeline seven is connected in series with a station one cylinder filling stop valve; the filling station area also includes a station two filling cylinder and a station two electronic scale for weighing the filling cylinder at station two, the filling cylinder at station two and the pneumatic three-way L-shaped ball valve at station two are connected in series via a pipeline eight, and the pipeline eight is connected in series with a station two cylinder filling stop valve;

[0009] The nitrogen drying device comprises a pipe nine with a compressed gas source at one end and a nitrogen delivery pipe at the other end, and a drying bottle dust filter, a nitrogen drying bottle, a drying cabinet nitrogen inlet pressure regulating valve, a drying cabinet nitrogen inlet stop valve and a drying cabinet nitrogen inlet pressure gauge are connected in series to the pipe nine;

[0010] The medicine extraction component includes a medicine barrel one and a medicine barrel two, and the medicine delivery pipe is connected to a medicine extraction collecting pipe, a pipeline ten is connected between the medicine extraction collecting pipe and the medicine barrel one, and a pipeline eleven is connected between the medicine extraction collecting pipe and the medicine barrel two, a medicine pipeline stop valve of the medicine barrel one is connected in series to the pipeline ten, and a medicine pipeline stop valve of the medicine barrel two is connected in series to the pipeline eleven, and a medicine barrel pressure-compensating collecting pipe is connected to the nitrogen delivery pipe, a pipeline twelve is connected between the medicine barrel pressure-compensating collecting pipe and the medicine barrel one, and a pipeline thirteen is connected between the medicine barrel two, a medicine barrel one pressure-compensating nitrogen pipeline stop valve is connected in series to the pipeline twelve, and a medicine barrel two pressure-compensating nitrogen pipeline stop valve is connected in series to the pipeline thirteen.

[0011] The present invention is further configured as follows: a vacuum pump is provided at one end of the drug delivery pipe that is not connected to the drug extraction manifold, and a vacuum pressure gauge close to the vacuum pump and a nitrogen pipeline vacuum shut-off valve are connected in series to the drug delivery pipe.

[0012] The present invention is further configured as follows: the medicine delivery pipe is connected to a pipeline fourteen close to the vacuum pump, and a pressure relief stop valve is serially connected to the pipeline fourteen.

[0013] The present invention is further configured as follows: 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 separation pneumatic coupler.

[0014] The present invention is further configured as follows: the medicine delivery pipe is connected in series with a medicine barrel compensating pressure gauge, a medicine barrel compensating pressure regulating valve, a second pressure gauge, a medicine barrel compensating pipeline normally closed solenoid valve and a medicine barrel compensating pressure safety valve which are arranged on one side of the nitrogen drying device; the medicine delivery pipe is connected in series with a dry nitrogen pipeline normally closed solenoid valve which is arranged on the other side of the nitrogen drying device.

[0015] The present invention is further configured as follows: a pipeline 15 is connected in series between the compressed gas source delivery pipe and the medicine delivery pipe, and a ZB05T refrigerant booster pump is connected in series to the pipeline 15.

[0016] The present invention also relates to a multi-station perfluorohexanone quantitative filling method, comprising the following steps:

[0017] S1. Inspection stage before filling: Check that all valves on the operation panel are closed and check the pressure on the operation panel. There is no pressure in 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 there is weight data, reset it to zero;

[0020] S2.2 Use an electric crane to lift the cylinder onto the cylinder scale and confirm that the tare weight shown on the display is consistent with the tare weight printed on the cylinder mark. If there is any deviation, find out the reason 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 reagents at stations one and two, as well as the vacuum stop valves for reagent pipelines, the vacuum stop valves for nitrogen pipelines, and the cylinder filling stop valves at stations one and two;

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

[0024] S2.6 Open the nitrogen inlet stop valve of the drying cabinet and the normally closed solenoid valve of the pressure-replenishing pipeline of the reagent barrel, and adjust the nitrogen inlet pressure regulating valve of the drying cabinet and the pressure-replenishing pressure regulating valve of the reagent barrel respectively so that the pressure displayed on the nitrogen inlet pressure gauge of the drying cabinet is within 8-10Mpa and the pressure displayed on the pressure gauge of the reagent barrel is within 0.08-0.01Mpa, and then close the normally closed solenoid valve of the pressure-replenishing pipeline of the reagent barrel;

[0025] S2.7 First open the normally closed solenoid valve of the dry nitrogen pipeline to replace nitrogen 0.5Mpa, then open the stop valve of the drive gas source pipeline, adjust the pressure reducing valve of the drive gas source pipeline to make the pressure displayed on the pressure gauge of the drive gas source pipeline within 0.8-0.9Mpa, then close the stop valve of the drive gas source pipeline, and finally close the normally closed solenoid valve of the dry nitrogen pipeline;

[0026] S2.8 Check whether there is leakage at the connection of the bottle valve;

[0027] S2.9 Open the pressure relief stop valve to release nitrogen, and close the pressure relief stop valve when the pressure drops to 0.1Mpa;

[0028] S2.10 Open the nitrogen pipeline vacuum stop valve, start the vacuum pump, and after the vacuum reaches -0.098Mpa, turn off the vacuum pump and close the nitrogen pipeline vacuum stop valve;

[0029] S2.11 Close the vacuum stop valve of the reagent pipeline, the nitrogen and reagent normally closed solenoid valves of stations one and two;

[0030] S3. Medicine filling stage:

[0031] S3.1 First install the siphon assembly onto the perfluorohexanone agent barrel, and then firmly connect the male end of the quick pipe connector of the siphon assembly with the female end of the quick pipe connector of the filling system;

[0032] S3.2 Open the normally closed solenoid valve of the pressure-replenishing pipeline of the reagent barrel, open the stop valves of the nitrogen pressure-replenishing pipelines of the first and second reagent barrels, and confirm whether the pressure displayed on the pressure gauge of the reagent barrel is within 0.08-0.1Mpa. If not, adjust the pressure regulating valve of the reagent barrel pressure-replenishing pressure to make the pressure of the reagent barrel within the safe range;

[0033] S3.3 Open the normally closed solenoid valve of the dry nitrogen pipeline and the stop valve of the driving gas source pipeline, and confirm whether the pressure displayed on the pressure gauge of the driving gas source pipeline is within 0.8-0.9Mpa. If not, adjust the pressure reducing valve of the driving gas source pipeline to make the pressure of the driving gas source pipeline within the safe range;

[0034] S3.4 First open the stop valves of the first and second reagent pipelines of the reagent barrels and the normally closed high-pressure solenoid valves of the first and second reagent stations, and then open the reversing solenoid valves of the pneumatic three-way L-type ball valves of the first and second reagent stations to control the opening of the pneumatic three-way L-type ball valves of the first and second reagent stations respectively;

[0035] S3.5 opens the normally closed solenoid valve of the ZB05T refrigerant booster pump to control the ZB05T refrigerant booster pump to start and fill the agent. The steel cylinder scales at the first and second stations provide real-time feedback of the weighing data. When the agent is filled to the set value, the pneumatic three-way L-type ball valves at the first and second stations control the corresponding pneumatic three-way L-type ball valves to close according to the real-time data fed back by the steel cylinder scales at the first and second stations, and switch to the nitrogen filling pipeline;

[0036] S4. Nitrogen filling stage:

[0037] S4.1 When the pneumatic three-way L-type ball valves at stations one and two are controlled to close according to the real-time data fed back by the cylinder scales at stations one and two, and after switching to the nitrogen filling pipeline, the nitrogen high-pressure normally closed solenoid valves at stations one and two are opened for nitrogen filling;

[0038] S4.2 After the pressure gauges of the steel cylinders at stations 1 and 2 respectively report that the corresponding cylinder groups have been filled with nitrogen to the set pressure, close the nitrogen high-pressure normally closed solenoid valves at stations 1 and 2 and the stop valves for filling the steel cylinders at stations 1 and 2;

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

[0040] S4.4 Shake the cylinder until the pressure inside the cylinder is stable; when the pressure is lower than the set pressure, repeat steps 1 to 3;

[0041] S5. Filling completion stage: release pressure in 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 through PLC control;

[0044] 2. The joint of the filling cylinder adopts a quick-release joint. After filling, the filling cylinder can be quickly replaced for the next filling;

[0045] 3. This device controls the moisture content during the filling process of perfluorohexanone through the following two aspects: a. Control the moisture content of the agent during the filling process: the agent barrel joint adopts a quick-release joint to reduce the contact between the agent and the air during the replacement of the agent barrel; b. Control the moisture content in the nitrogen during the filling process: use activated alumina to dry the nitrogen and absorb trace amounts of moisture in the nitrogen; use a vacuum machine to extract the air in the pipeline and cylinder before filling. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a schematic diagram of the pipeline used to embody the filling system of the present invention;

[0047] Figure 2 It is a schematic diagram of the present invention for reflecting the filling operation table;

[0048] Figure 3 It is a schematic diagram of the present invention for reflecting the filling station area;

[0049] Figure 4 is a schematic diagram of a nitrogen drying device used to embody the present invention;

[0050] Figure 5 It is a schematic diagram of the present invention for embodying the drug extraction component. DETAILED DESCRIPTION

[0051] In order to enable those skilled in the art to better understand the technical solution of the present invention, the preferred embodiments of the present invention are described below in conjunction with specific embodiments, but it should be understood that these descriptions are only for further illustrating the features and advantages of the present invention, rather than limiting the patent requirements of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0052] The present invention is further described below in conjunction with the accompanying drawings and preferred embodiments.

[0053] Example 1

[0054] See also Figures 1 to 5 As shown, a 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 medicine extraction component 400;

[0055] The filling operation table 100 includes a compressed air source delivery pipe 101, a medicine delivery pipe 102, a nitrogen delivery pipe 103, a pneumatic three-way L-type ball valve 104 at station one, and a pneumatic three-way L-type ball valve 105 at station two; the pneumatic three-way L-type ball valve 104 at station one is connected to the medicine delivery pipe 102 via a pipe 1, and a high-pressure normally closed solenoid valve 106 for medicine at station one is connected in series to the pipe 1; the pneumatic three-way L-type ball valve 104 at station one is connected to the nitrogen delivery pipe 103 via a pipe 2, and a high-pressure normally closed solenoid valve 107 for nitrogen at station one is connected in series to the pipe 2; the pneumatic three-way L-type ball valve 104 at station one is connected to the nitrogen delivery pipe 103 via a pipe 2, and a high-pressure normally closed solenoid valve 107 for nitrogen at station one is connected in series to the pipe 2; Pipeline three is connected to the compressed air source delivery pipe 101; the station two pneumatic three-way L-type ball valve 105 is connected to the agent delivery pipe 102 through pipeline four, and the station two agent high-pressure normally closed solenoid valve 108 is connected in series to the pipeline four; the station two pneumatic three-way L-type ball valve 105 is connected to the nitrogen delivery pipe 103 through pipeline five, and the station two nitrogen high-pressure normally closed solenoid valve 109 is connected in series to the pipeline five; the station two pneumatic three-way L-type ball valve 105 is connected to the compressed air source delivery pipe 101 through pipeline six, and a drug pipeline vacuum stop valve 110 is provided between the drug delivery pipe 102 and the nitrogen delivery pipe 103;

[0056] The filling station area 200 includes a filling cylinder 201 at station one and an electronic scale 202 at station one for weighing the filling cylinder at station one. The filling cylinder 201 at station one is connected in series with a pneumatic three-way L-shaped ball valve at station one through a pipeline seven, and a filling stop valve 203 for the cylinder at station one is connected in series to the pipeline seven; the filling station area 200 also includes a filling cylinder 204 at station two and an electronic scale 205 at station two for weighing the filling cylinder at station two. The filling cylinder 204 at station two is connected in series with a pneumatic three-way L-shaped ball valve at station two through a pipeline eight, and a filling stop valve 206 for the cylinder at station two is connected in series to the pipeline eight;

[0057] The nitrogen drying device 300 includes a pipe nine with a compressed gas source at one end and a nitrogen delivery pipe at the other end, and a drying bottle dust filter 301, a nitrogen drying bottle 302, a drying cabinet nitrogen inlet pressure regulating valve 303, a drying cabinet nitrogen inlet stop valve 304 and a drying cabinet nitrogen inlet pressure gauge 305 are connected in series to the pipe nine;

[0058] The medicine extraction component 400 includes a medicine barrel 1 401 and a medicine barrel 2 402, and the medicine delivery pipe 102 is connected to a medicine extraction collecting pipe 403, and a pipeline 10 is connected between the medicine extraction collecting pipe 403 and the medicine barrel 1 401, and a pipeline 11 is connected between the medicine extraction collecting pipe 403 and the medicine barrel 2 402, and a medicine pipeline stop valve 404 of the medicine barrel 1 is connected in series to the pipeline 10, and a medicine pipeline stop valve 405 of the medicine barrel 2 is connected in series to the pipeline 11, and a medicine barrel pressure-compensating collecting pipe 406 is connected to the nitrogen delivery pipe 103, and a pipeline 12 is connected between the medicine barrel pressure-compensating collecting pipe 406 and the medicine barrel 1 401, and a pipeline 13 is connected between the medicine barrel 2 402, and a medicine barrel 1 pressure-compensating nitrogen pipeline stop valve 407 is connected in series to the pipeline 12, and a medicine barrel 2 pressure-compensating nitrogen pipeline stop valve 408 is connected in series to the pipeline 13.

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

[0060] Furthermore, the drug delivery pipe 102 is connected to a pipe fourteen close to the vacuum pump, and a pressure relief stop valve 114 is serially connected to the pipe fourteen.

[0061] Furthermore, the input end of the compressed air source delivery pipe 101 is provided with a drive air source pipeline shut-off valve 115 , a drive air source pipeline pressure regulating valve 116 , a drive air source pipeline pressure gauge 117 and an oil-water separation pneumatic coupler 118 .

[0062] Furthermore, the medicine delivery pipe 102 is connected in series with a medicine barrel compensating pressure gauge 306, a medicine barrel compensating pressure regulating valve 307, a pressure gauge 308, a medicine barrel compensating pipeline normally closed solenoid valve 309 and a medicine barrel compensating pressure safety valve 310, which are arranged on one side of the nitrogen drying device 300; the medicine delivery pipe 102 is connected in series with a dry nitrogen pipeline normally closed solenoid valve 311, which is arranged on the other side of the nitrogen drying device 300.

[0063] Furthermore, a pipeline 15 is connected in series between the compressed gas source delivery pipe 101 and the medicine delivery pipe 102, and a ZB05T refrigerant booster pump 119 is connected in series to the pipeline 15.

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

[0065] S1. Inspection stage before filling: Check that all valves on the operation panel are closed and check the pressure on the operation panel. There is no pressure in 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 there is weight data, reset it to zero;

[0068] S2.2 Use an electric crane to lift the cylinder onto the cylinder scale and confirm that the tare weight shown on the display is consistent with the tare weight printed on the cylinder mark. If there is any deviation, find out the reason 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 reagents at stations one and two, as well as the vacuum stop valves for reagent pipelines, the vacuum stop valves for nitrogen pipelines, and the cylinder filling stop valves at stations one and two;

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

[0072] S2.6 Open the nitrogen inlet stop valve of the drying cabinet and the normally closed solenoid valve of the pressure-replenishing pipeline of the reagent barrel, and adjust the nitrogen inlet pressure regulating valve of the drying cabinet and the pressure-replenishing pressure regulating valve of the reagent barrel respectively so that the pressure displayed on the nitrogen inlet pressure gauge of the drying cabinet is within 8-10Mpa and the pressure displayed on the pressure gauge of the reagent barrel is within 0.08-0.01Mpa, and then close the normally closed solenoid valve of the pressure-replenishing pipeline of the reagent barrel;

[0073] S2.7 First open the normally closed solenoid valve of the dry nitrogen pipeline to replace nitrogen 0.5Mpa, then open the stop valve of the drive gas source pipeline, adjust the pressure reducing valve of the drive gas source pipeline to make the pressure displayed on the pressure gauge of the drive gas source pipeline within 0.8-0.9Mpa, then close the stop valve of the drive gas source pipeline, and finally close the normally closed solenoid valve of the dry nitrogen pipeline;

[0074] S2.8 Check whether there is leakage at the connection of the bottle valve;

[0075] S2.9 Open the pressure relief stop valve to release nitrogen, and close the pressure relief stop valve when the pressure drops to 0.1Mpa;

[0076] S2.10 Open the nitrogen pipeline vacuum stop valve, start the vacuum pump, and after the vacuum reaches -0.098Mpa, turn off the vacuum pump and close the nitrogen pipeline vacuum stop valve;

[0077] S2.11 Close the vacuum stop valve of the reagent pipeline, the nitrogen and reagent normally closed solenoid valves of stations one and two;

[0078] S3. Medicine filling stage:

[0079] S3.1 First install the siphon assembly onto the perfluorohexanone agent barrel, and then firmly connect the male end of the quick pipe connector of the siphon assembly with the female end of the quick pipe connector of the filling system;

[0080] S3.2 Open the normally closed solenoid valve of the pressure-replenishing pipeline of the reagent barrel, open the stop valves of the nitrogen pressure-replenishing pipelines of the first and second reagent barrels, and confirm whether the pressure displayed on the pressure gauge of the reagent barrel is within 0.08-0.1Mpa. If not, adjust the pressure regulating valve of the reagent barrel pressure-replenishing pressure to make the pressure of the reagent barrel within the safe range;

[0081] S3.3 Open the normally closed solenoid valve of the dry nitrogen pipeline and the stop valve of the driving gas source pipeline, and confirm whether the pressure displayed on the pressure gauge of the driving gas source pipeline is within 0.8-0.9Mpa. If not, adjust the pressure reducing valve of the driving gas source pipeline to make the pressure of the driving gas source pipeline within the safe range;

[0082] S3.4 First open the stop valves of the first and second reagent pipelines of the reagent barrels and the normally closed high-pressure solenoid valves of the first and second reagent stations, and then open the reversing solenoid valves of the pneumatic three-way L-type ball valves of the first and second reagent stations to control the opening of the pneumatic three-way L-type ball valves of the first and second reagent stations respectively;

[0083] S3.5 opens the normally closed solenoid valve of the ZB05T refrigerant booster pump to control the ZB05T refrigerant booster pump to start and fill the agent. The steel cylinder scales at the first and second stations provide real-time feedback of the weighing data. When the agent is filled to the set value, the pneumatic three-way L-type ball valves at the first and second stations control the corresponding pneumatic three-way L-type ball valves to close according to the real-time data fed back by the steel cylinder scales at the first and second stations, and switch to the nitrogen filling pipeline;

[0084] S4. Nitrogen filling stage:

[0085] S4.1 When the pneumatic three-way L-type ball valves at stations one and two are controlled to close according to the real-time data fed back by the cylinder scales at stations one and two, and after switching to the nitrogen filling pipeline, the nitrogen high-pressure normally closed solenoid valves at stations one and two are opened for nitrogen filling;

[0086] S4.2 After the pressure gauges of the steel cylinders at stations 1 and 2 respectively report that the corresponding cylinder groups have been filled with nitrogen to the set pressure, close the nitrogen high-pressure normally closed solenoid valves at stations 1 and 2 and the stop valves for filling the steel cylinders at stations 1 and 2;

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

[0088] S4.4 Shake the cylinder until the pressure inside the cylinder is stable; when the pressure is lower than the set pressure, repeat steps 1 to 3;

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

[0090] In this embodiment, an electric pneumatically driven through valve can be used to replace the high-pressure electromagnetic normally closed solenoid valve, which helps to improve the filling efficiency.

[0091] Unless otherwise specified, in the present invention, the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicating orientation or positional relationship are based on the orientation or positional relationship actually shown, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the orientation or positional relationship in the present invention are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood in combination with the embodiments and according to specific circumstances.

[0092] Unless otherwise clearly specified and limited, in the present invention, the terms "disposed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0093] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A multi-station perfluorohexanone quantitative filling system, characterized in that: It includes a filling operation table, a filling station area, a nitrogen drying device and a medicine extraction component; The filling operation table includes a compressed air source delivery pipe, a medicine delivery pipe, a nitrogen delivery pipe, a pneumatic three-way L-type ball valve at station one, and a pneumatic three-way L-type ball valve at station two; the pneumatic three-way L-type ball valve at station one is connected to the medicine delivery pipe through a pipe one, and a medicine high-pressure normally closed solenoid valve at station one is connected in series to the pipe one, the pneumatic three-way L-type ball valve at station one is connected to the nitrogen delivery pipe through a pipe two, and a nitrogen high-pressure normally closed solenoid valve at station one is connected in series to the pipe two, and the pneumatic three-way L-type ball valve at station one is connected to the nitrogen delivery pipe through a pipe two. Pipe 3 is connected to the compressed air source delivery pipe; the station 2 pneumatic three-way L-type ball valve is connected to the agent delivery pipe through pipe 4, and the station 2 agent high-pressure normally closed solenoid valve is connected in series to the pipe 4; the station 2 pneumatic three-way L-type ball valve is connected to the nitrogen delivery pipe through pipe 5, and the station 2 nitrogen high-pressure normally closed solenoid valve is connected in series to the pipe 5; the station 2 pneumatic three-way L-type ball valve is connected to the compressed air source delivery pipe through pipe 6, and a vacuum stop valve for the agent pipeline is provided between the agent delivery pipe and the nitrogen delivery pipe; The filling station area includes a station one filling cylinder and a station one electronic scale for weighing a station one filling cylinder, the station one filling cylinder and a station one pneumatic three-way L-shaped ball valve are connected in series via a pipeline seven, and a station one cylinder filling stop valve is connected in series to the pipeline seven; the filling station area also includes a station two filling cylinder and a station two electronic scale for weighing a station two filling cylinder, the station two filling cylinder and a station two pneumatic three-way L-shaped ball valve are connected in series via a pipeline eight, and a station two cylinder filling stop valve is connected in series to the pipeline eight; The nitrogen drying device comprises a pipe nine with a compressed gas source at one end and a nitrogen delivery pipe at the other end, and a drying bottle dust filter, a nitrogen drying bottle, a drying cabinet nitrogen inlet pressure regulating valve, a drying cabinet nitrogen inlet stop valve and a drying cabinet nitrogen inlet pressure gauge are connected in series to the pipe nine; The medicine extraction component includes a medicine barrel one and a medicine barrel two, and the medicine delivery pipe is connected to a medicine extraction collecting pipe, a pipeline ten is connected between the medicine extraction collecting pipe and the medicine barrel one, and a pipeline eleven is connected between the medicine extraction collecting pipe and the medicine barrel two, a medicine pipeline stop valve of the medicine barrel one is connected in series to the pipeline ten, and a medicine pipeline stop valve of the medicine barrel two is connected in series to the pipeline eleven, and a medicine barrel pressure-compensating collecting pipe is connected to the nitrogen delivery pipe, a pipeline twelve is connected between the medicine barrel pressure-compensating collecting pipe and the medicine barrel one, and a pipeline thirteen is connected between the medicine barrel two, a medicine barrel one pressure-compensating nitrogen pipeline stop valve is connected in series to the pipeline twelve, and a medicine barrel two pressure-compensating nitrogen pipeline stop valve is connected in series to the pipeline thirteen.

2. The multi-station perfluorohexanone quantitative filling system according to claim 1, characterized in that: A vacuum pump is provided at one end of the medicine delivery pipe which is not connected to the medicine extraction manifold, and a vacuum pressure gauge close to the vacuum pump and a nitrogen pipeline vacuum stop valve are connected in series to the medicine delivery pipe.

3. The multi-station perfluorohexanone quantitative filling system according to claim 2, characterized in that: The medicine delivery pipe is connected to a pipeline 14 close to the vacuum pump, and a pressure relief stop valve is serially connected to the pipeline 14.

4. The multi-station perfluorohexanone quantitative filling system according to claim 3, characterized in that: The input end of the compressed air source delivery pipe is provided with a drive air source pipeline stop valve, a drive air source pipeline pressure regulating valve, a drive air source pipeline pressure gauge and an oil-water separation pneumatic two-piece.

5. The multi-station perfluorohexanone quantitative filling system according to claim 4, characterized in that: The medicine delivery pipe is connected in series with a medicine barrel compensating pressure gauge, a medicine barrel compensating pressure regulating valve, a second pressure gauge, a medicine barrel compensating pressure pipeline normally closed solenoid valve and a medicine barrel compensating pressure safety valve which are arranged on one side of the nitrogen drying device; the medicine delivery pipe is connected in series with a dry nitrogen pipeline normally closed solenoid valve which is arranged 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 pipeline 15 is connected in series between the compressed gas source delivery pipe and the medicine delivery pipe, and a ZB05T refrigerant booster pump is connected in series to the pipeline 15.

7. A multi-station perfluorohexanone quantitative filling method according to claim 6, characterized in that: The following steps are involved: S1. Inspection stage before filling: Check that all valves on the operation panel are closed and check the pressure on the operation panel. There is no pressure in the preparation stage. If there is pressure, open the pressure relief valve to release the pressure and then close it; S2. Nitrogen replacement stage: S2.1 Turn on the power switch of the cylinder scale and check that the display shows "0". If there is weight data, reset it to zero; S2.2 Use an electric crane to lift the cylinder onto the cylinder scale and confirm that the tare weight shown on the display is consistent with the tare weight printed on the cylinder mark. If there is any deviation, find out the reason before filling; S2.3 Connect the filling port of the cylinder valve to the filling connector; S2.4 Open the normally closed solenoid valves for nitrogen and reagents at stations one and two, as well as the vacuum stop valves for reagent pipelines, the vacuum stop valves for nitrogen pipelines, and the cylinder filling stop valves at stations one and two; S2.5 Start the vacuum pump, pump to a vacuum state of -0.098Mpa, then turn off the vacuum pump and close the vacuum stop valve of the nitrogen pipeline; S2.6 Open the nitrogen inlet stop valve of the drying cabinet and the normally closed solenoid valve of the pressure-replenishing pipeline of the reagent barrel, and adjust the nitrogen inlet pressure regulating valve of the drying cabinet and the pressure-replenishing pressure regulating valve of the reagent barrel respectively so that the pressure displayed on the nitrogen inlet pressure gauge of the drying cabinet is within 8-10Mpa and the pressure displayed on the pressure gauge of the reagent barrel is within 0.08-0.01Mpa, and then close the normally closed solenoid valve of the pressure-replenishing pipeline of the reagent barrel; S2.7 First open the normally closed solenoid valve of the dry nitrogen pipeline to replace nitrogen 0.5Mpa, then open the stop valve of the drive gas source pipeline, adjust the pressure reducing valve of the drive gas source pipeline to make the pressure displayed on the pressure gauge of the drive gas source pipeline within 0.8-0.9Mpa, then close the stop valve of the drive gas source pipeline, and finally close the normally closed solenoid valve of the dry nitrogen pipeline; S2.8 Check whether there is leakage at the connection of the bottle valve; S2.9 Open the pressure relief stop valve to release nitrogen, and close the pressure relief stop valve when the pressure drops to 0.1Mpa; S2.10 Open the nitrogen pipeline vacuum stop valve, start the vacuum pump, and after the vacuum reaches -0.098Mpa, turn off the vacuum pump and close the nitrogen pipeline vacuum stop valve; S2.11 Close the vacuum stop valve of the reagent pipeline, the nitrogen and reagent normally closed solenoid valves of stations one and two; S3. Medicine filling stage: S3.1 First install the siphon assembly onto the perfluorohexanone agent barrel, and then firmly connect the male end of the quick pipe connector of the siphon assembly with the female end of the quick pipe connector of the filling system; S3.2 Open the normally closed solenoid valve of the pressure-replenishing pipeline of the reagent barrel, open the stop valves of the nitrogen pressure-replenishing pipelines of the first and second reagent barrels, and confirm whether the pressure displayed on the pressure gauge of the reagent barrel is within 0.08-0.1Mpa. If not, adjust the pressure regulating valve of the reagent barrel pressure-replenishing pressure to make the pressure of the reagent barrel within the safe range; S3.3 Open the normally closed solenoid valve of the dry nitrogen pipeline and the stop valve of the driving gas source pipeline, and confirm whether the pressure displayed on the pressure gauge of the driving gas source pipeline is within 0.8-0.9Mpa. If not, adjust the pressure reducing valve of the driving gas source pipeline to make the pressure of the driving gas source pipeline within the safe range; S3.4 First open the stop valves of the first and second reagent pipelines of the reagent barrels and the normally closed high-pressure solenoid valves of the first and second reagent stations, and then open the reversing solenoid valves of the pneumatic three-way L-type ball valves of the first and second reagent stations to control the opening of the pneumatic three-way L-type ball valves of the first and second reagent stations respectively; S3.5 opens the normally closed solenoid valve of the ZB05T refrigerant booster pump to control the ZB05T refrigerant booster pump to start and fill the agent. The steel cylinder scales at the first and second stations provide real-time feedback of the weighing data. When the agent is filled to the set value, the pneumatic three-way L-type ball valves at the first and second stations control the corresponding pneumatic three-way L-type ball valves to close according to the real-time data fed back by the steel cylinder scales at the first and second stations, and switch to the nitrogen filling pipeline; S4. Nitrogen filling stage: S4.1 When the pneumatic three-way L-type ball valves at stations one and two are controlled to close according to the real-time data fed back by the cylinder scales at stations one and two, and after switching to the nitrogen filling pipeline, the nitrogen high-pressure normally closed solenoid valves at stations one and two are opened for nitrogen filling; S4.2 After the pressure gauges of the steel cylinders at stations 1 and 2 respectively report that the corresponding cylinder groups have been filled with nitrogen to the set pressure, close the nitrogen high-pressure normally closed solenoid valves at stations 1 and 2 and the stop valves for filling the steel cylinders at stations 1 and 2; S4.3 Close the filling port of the cylinder valve; S4.4 Shake the cylinder until the pressure inside the cylinder is stable; when the pressure is lower than the set pressure, repeat steps 1 to 3; S5. Filling completion stage: release pressure in the nitrogen pipeline; remove the filling connector.

Images