CN110778912A

CN110778912A - Fire extinguishing agent filling equipment and filling method thereof

Info

Publication number: CN110778912A
Application number: CN201911072170.XA
Authority: CN
Inventors: 陆杰
Original assignee: Anhui Yingjie Precise Technique Machinery Co Ltd
Current assignee: Anhui Yingjie Precision Machinery Co ltd
Priority date: 2019-11-05
Filing date: 2019-11-05
Publication date: 2020-02-11
Anticipated expiration: 2039-11-05
Also published as: CN110778912B

Abstract

The invention discloses a fire extinguishing agent filling device and a filling method thereof. The fire extinguishing agent filling device is used for firstly enabling the vacuum pump to vacuumize the fire extinguisher, then filling at least one solvent stored in the storage container II into the fire extinguisher through the filling assembly II, filling helium stored in the storage container III into the three-way fire extinguisher through the filling assembly, then filling at least one fire extinguishing agent stored in the storage container I into the fire extinguisher through the filling assembly, and finally filling nitrogen stored in the storage container III into the fire extinguisher. The invention is convenient for vacuum pumping and leakage detection, improves the internal air pressure of the fire extinguisher, and effectively reduces the filling pressure error of the fire extinguishing agent caused by pipeline factors, thereby improving the filling efficiency and meeting the filling requirements of various requirements.

Description

Fire extinguishing agent filling equipment and filling method thereof

Technical Field

The invention relates to a filling device in the technical field of fire fighting, in particular to a fire extinguishing agent filling device and a fire extinguishing agent filling method of the filling device.

Background

The fire extinguisher is a portable fire extinguishing tool. Chemical substances are placed in the fire extinguisher to extinguish fire. The fire extinguisher is one of common fire-proof facilities, is stored in public places or places where fire disasters may happen, and different fire extinguishers of different types are filled with different components and are specially designed for different fires. The fire extinguisher needs to be refilled with the fire suppressant after use. The performance of the fire suppressant filling apparatus directly affects the accuracy of filling the fire suppressant amount, the safety and complexity of the filling operation.

The existing fire extinguisher filling equipment, such as the device described in the Chinese patent 'a ground filling device for aviation fire extinguishers and a using method thereof' (publication No. CN107398054A), cannot perform vacuum pumping operation before filling the fire extinguishers, does not provide a technical method for accurately controlling the filling quality of the fire extinguishers, and lacks a technical measure for ensuring that the filling pressure of the fire extinguishers does not exceed a set value. The device in Chinese patent 'a fire extinguishing agent filling device' (application number CN201811120189.2) can vacuumize the fire extinguisher before filling, can automatically reduce the pressure in the fire extinguisher when the filling pressure of the fire extinguisher exceeds a set value, can automatically control the quality of the filled fire extinguishing agent according to the set value, and makes up the defects in the patent (CN107398054A) to a certain extent, but the patent has the following defects: (1) the device has no helium filling function, and is not beneficial to the quick implementation of the process of vacuumizing, detecting leakage and filling the fire extinguishing agent; (2) the device has no solvent filling function, can only fill the fire extinguishing agent, and cannot fill part of solvents (such as methanol, fire extinguishing agent azeotrope and the like) required by the fire extinguisher; (3) the device is not provided with a high-precision pressure gauge near a filling opening of the fire extinguisher, and the pressure change in the pipeline can bring about the error of filling pressure. Therefore, the existing fire extinguishing agent filling equipment has the problems of slow filling speed and error of filling pressure.

Disclosure of Invention

The invention provides a fire extinguishing agent filling device and a filling method thereof, aiming at solving the technical problems that the existing fire extinguishing agent filling device is slow in filling speed and has filling pressure errors.

The invention is realized by adopting the following technical scheme: a fire extinguishing agent filling device is used for filling fire extinguishing agents into fire extinguishers and comprises a vacuum pump, a first storage container, a first filling assembly, a second storage container, a second filling assembly, a third storage container, a third filling assembly, a fourth storage container and a fourth filling assembly; the fire extinguishing agent filling equipment is used for firstly vacuumizing the fire extinguisher by a vacuum pump until the internal pressure of the fire extinguisher is lower than a preset pressure I, then filling at least one solvent stored in a storage container II into the fire extinguisher through a filling assembly II, filling helium gas which is stored in a storage container III and has the air pressure of a preset pressure II into a three-way fire extinguisher through the filling assembly, then filling at least one fire extinguishing agent which is stored in the storage container I and has the weight of a preset weight into the fire extinguisher by utilizing the filling assembly, and finally filling nitrogen gas stored in a storage container IV into the fire extinguisher; wherein, when filling nitrogen gas, fire extinguishing agent fills equipment earlier through fill in the subassembly quadriversal fire extinguisher and fill a nitrogen gas of presetting pressure three, repeat again: firstly shaking the fire extinguisher for a preset time until the pressure inside the fire extinguisher is less than a preset pressure four, then filling nitrogen with a preset pressure five into the fire extinguisher in four directions through the filling assembly until the pressure inside the fire extinguisher is within a preset pressure range, and finishing filling.

The fire extinguisher is filled with basic fire extinguishing agent through the first storage container and the first filling assembly, and is filled with solvent through the second storage container and the second filling assembly, helium is filled in the storage container III and the filling assembly III, nitrogen is filled in the storage container IV and the filling assembly IV, and in the filling process, firstly vacuum is pumped, then the solvent, helium and the fire extinguishing agent are filled in sequence, and finally nitrogen is filled until the pressure in the fire extinguisher meets the requirement, so that the problem that the filling speed is slow because the existing fire extinguishing agent filling equipment does not have helium and solvent filling functions is solved, but also has the technical problem of filling pressure error, and the helium and the solvent are filled, thereby being beneficial to vacuumizing and leakage detection, and can effectively reduce the fire extinguishing agent that causes because pipeline factor fills the pressure error to improve and fill the technical effect of dress efficiency and filling effect.

As a further improvement of the above scheme, the first filling assembly comprises an outlet ball valve, a fire extinguishing agent pressure gauge, a filling ball valve and a first check valve; the outlet ball valve is arranged at the outlet of the first storage container and is used for adjusting the flow of the fire extinguishing agent flowing out of the first storage container; the fire extinguishing agent pressure gauge is used for detecting and displaying the storage pressure of the fire extinguishing agent in the first storage container; the filling ball valve is used for adjusting the flow of the fire extinguishing agent flowing out of the outlet ball valve to the fire extinguisher; the first check valve is next to the filling ball valve and is used for blocking the fire extinguishing agent in the fire extinguisher from flowing to the first storage container.

As a further improvement of the above scheme, the second filling assembly comprises a second outlet metering valve and a second check valve; the outlet metering valve is arranged at an outlet of the second storage container and is used for regulating the flow of the solvent flowing out of the second storage container to the fire extinguisher; the second check valve is close to the outlet metering valve and is used for blocking the solvent in the fire extinguisher from flowing into the second storage container.

As a further improvement of the above scheme, the third filling assembly comprises a helium high-pressure side ball valve, a helium high-pressure side pressure gauge, a helium pressure regulating valve, a helium low-pressure side pressure gauge, a helium low-pressure side ball valve and a check valve III; the helium high-pressure side ball valve is arranged at an outlet of the storage container III and is used for adjusting the flow of helium flowing out of the storage container III to the fire extinguisher; the helium high-pressure side pressure meter is used for detecting and displaying the pressure of helium in the storage container III; the helium pressure regulating valve is used for regulating the pressure of helium which flows to the fire extinguisher so as to detect the leakage of the fire extinguishing agent in the fire extinguisher; the helium low-pressure side pressure gauge is arranged between the helium pressure regulating valve and the fire extinguisher and is used for detecting and displaying the pressure of helium flowing out of the helium pressure regulating valve to the fire extinguisher; the helium low-pressure side ball valve is used for adjusting the flow of helium flowing out of the helium pressure regulating valve to the fire extinguisher; and the third check valve is next to the helium low-pressure side ball valve and is used for blocking the helium in the fire extinguisher from flowing into the third storage container.

As a further improvement of the above scheme, the fourth filling assembly comprises a nitrogen high-pressure side ball valve, a nitrogen high-pressure side pressure gauge, a nitrogen pressure regulating valve, a nitrogen low-pressure side pressure gauge, a nitrogen low-pressure side ball valve and a check valve IV; the nitrogen high-pressure side ball valve is arranged at an outlet of the storage container IV and is used for opening or closing nitrogen flowing out of the storage container IV to the fire extinguisher; the nitrogen high-pressure side pressure meter is used for detecting and displaying the pressure of the nitrogen in the storage container IV; the nitrogen pressure regulating valve is used for regulating the pressure of nitrogen which flows to the fire extinguisher so as to pressurize the fire extinguishing agent in the fire extinguisher; the nitrogen low-pressure side pressure gauge is tightly connected with the nitrogen pressure regulating valve and is used for detecting and displaying the pressure of the nitrogen flowing out of the nitrogen pressure regulating valve to the fire extinguisher; the nitrogen low-pressure side ball valve is used for adjusting the flow of nitrogen flowing out of the nitrogen pressure regulating valve to the fire extinguisher; and the check valve IV is next to the ball valve at the low pressure side of the nitrogen and is used for blocking the nitrogen in the fire extinguisher from flowing into the storage container IV.

As a further improvement of the above solution, the fire extinguishing agent charging apparatus further comprises:

the vacuum pumping assembly comprises a vacuum pumping ball valve and a vacuum meter; the vacuumizing ball valve is arranged between the vacuum pump and the fire extinguisher and is used for adjusting the air suction amount of the vacuum pump to the fire extinguisher; the vacuum gauge is arranged between the vacuum-pumping ball valve and the vacuum pump and used for displaying the vacuum degree of the vacuum pump during vacuum pumping.

the filling control assembly comprises a filling main ball valve and a filling pressure gauge; the filling main ball valve is used for sending the fire extinguishing agent formed by the combination of the fire extinguishing agent filled in the filling assembly I, the solvent filled in the filling assembly II, the helium filled in the filling assembly III and the nitrogen filled in the filling assembly IV into a fire extinguisher, and controlling the filling amount of the fire extinguishing agent and the vacuum degree of the fire extinguisher pumped by the vacuum pump; the filling pressure gauge is used for displaying the pressure inside the fire extinguisher.

Further, the fire extinguishing agent charging apparatus further includes:

the automatic shaking device comprises a base, two positioning plates, at least one telescopic piece, a positioning barrel, a supporting barrel and a plurality of elastic components; the two positioning plates are arranged in parallel and are arranged on the base; the positioning barrel is rotatably arranged between the two positioning plates and has a certain distance with the base; the telescopic piece is arranged on the base, and the telescopic end is fixed with the positioning barrel so as to drive the positioning barrel to rotate relative to the base; the supporting barrel is arranged on the base and covers the positioning barrel; a plurality of elastic components are arranged between the positioning barrel and the supporting barrel, and each elastic component comprises a spring and a sliding plate; one end of the spring is fixed on the inner wall of the supporting barrel, and the sliding plate is fixed on the other end of the spring and is attached to the outer wall of the fire extinguisher; wherein the fire extinguisher is inserted on the positioning barrel and sways in the supporting barrel under the driving action of the telescopic piece.

Furthermore, the nitrogen pressure regulating valve and the nitrogen low-pressure side ball valve are communicated with a second storage container through at least one pressurizing pipeline; the fire extinguishing agent charging apparatus further includes:

a pressurizing ball valve installed on the mixing line and used for adjusting the flow of nitrogen flowing out of the storage container IV to the storage container II;

a weighing mechanism for weighing the weight of the fire extinguishing agent filled to the fire extinguisher.

The invention also provides a fire extinguishing agent filling method, which is applied to any fire extinguishing agent filling equipment, and comprises the following steps:

(a) enabling a vacuum pump to vacuumize the fire extinguisher until the internal pressure is lower than a preset pressure I;

(b) filling the solvent into a fire extinguisher through the second filling assembly;

(c) filling helium with a preset pressure II into the three-way fire extinguisher through the filling assembly;

(d) filling a fire extinguishing agent with a preset weight into a fire extinguisher by using the filling assembly;

(e) filling the nitrogen, wherein the filling method of the nitrogen comprises the following steps:

filling nitrogen with a preset pressure of three into the four-way fire extinguisher through the filling assembly;

(ii) shaking the fire extinguisher for a preset time until the pressure inside the fire extinguisher is less than a preset pressure four;

(iii) filling a preset pressure of five nitrogen into the four-way fire extinguisher through the filling assembly;

(iv) repeating (ii) and (iii) until the pressure inside the fire extinguisher is within a preset pressure range and the filling is finished.

Compared with the existing fire extinguishing agent filling technology, the fire extinguishing agent filling equipment and the filling method thereof have the following beneficial effects:

1. according to the fire extinguishing agent filling device, the vacuum pump can vacuumize the fire extinguisher so as to fill the fire extinguishing agent into the fire extinguisher subsequently, the fire extinguishing agent stored in the first storage container is filled into the fire extinguisher through the first filling assembly, the solvent in the second storage container is matched with the fire extinguishing agent and is filled into the fire extinguisher through the second filling assembly, and therefore the fire extinguishing agent of some types can be dissolved into the solvent for storage. Helium of storage container three of this filling equipment fills the fire extinguisher through filling subassembly three in, and helium can be convenient for on the one hand leak hunting, judges whether there is the leakage in the fire extinguisher through the mode that detects helium, and on the other hand still is convenient for evacuation and fills fire extinguishing agent, and then improves the filling speed and the filling efficiency of fire extinguishing agent. Moreover, the filling equipment can effectively reduce the fire extinguishing agent filling pressure error caused by pipeline factors by filling the solvent and the helium. The nitrogen of the storage container IV of the filling device is filled into the fire extinguisher through the filling assembly IV, so that the air pressure inside the fire extinguisher can be improved, the gas in the fire extinguisher is conveniently discharged when the fire is extinguished, and the fire extinguishing efficiency of the fire extinguisher is improved.

2. The fire extinguishing agent filling equipment is characterized in that when a fire extinguishing agent is filled, partial gas in a fire extinguisher is discharged firstly, so that negative air pressure relative to other containers is formed in the fire extinguisher, then a solvent, helium and the fire extinguishing agent are filled into the fire extinguisher respectively, and finally nitrogen is filled into the fire extinguisher repeatedly, and the fire extinguisher is shaken in the filling process every time, so that the gas in the fire extinguisher is uniformly mixed, the internal air pressure is balanced, the filling is not finished until the air pressure in the fire extinguisher reaches the pressure requirement, so that the stability of the air pressure in the filled fire extinguisher is ensured, the filling amount of the fire extinguishing agent is improved, and the helium is filled, so that the leakage can be detected in time when the fire extinguisher leaks, the use is convenient, and meanwhile, the filling requirement of the fire extinguishing agent with various requirements can be met due to the filling of the solvent.

3. The fire extinguishing agent filling equipment is characterized in that a first filling assembly, a second filling assembly, a third filling assembly and a fourth filling assembly are respectively provided with a check valve, so that the circulation of filling materials in the filling process can be prevented, the first filling assembly, the third filling assembly and the fourth filling assembly are used for controlling the filling materials by arranging at least two valves, one valve is close to an outlet part of a container, the other valve is close to a fire extinguisher, on one hand, double control can be realized, on the other hand, a pressure gauge is arranged between the two valves, the pressure of the material output by the first valve can be timely detected, the second valve can be opened when the pressure of the material reaches the requirement, so that the material can enter the fire extinguisher, the stability of filling of the fire extinguishing agent is improved, and due to the arrangement of a filling ball valve and a nitrogen pressure regulating valve, the two valves can.

4. This fire extinguishing agent fills equipment, it fills and fills dress the total ball valve in filling the control assembly and can control whole filling and evacuation process, can show atmospheric pressure through filling the manometer, just can stop filling when atmospheric pressure in the fire extinguisher is too big like this. In addition, this filling equipment still can realize automatic pressure release through the relief valve through the gas in the exhaust-valve discharge pipeline of pressure regulating subassembly, improves the security of filling.

Drawings

Fig. 1 is a piping diagram of a fire extinguishing agent charging apparatus according to embodiment 1 of the present invention;

fig. 2 is a schematic structural view of an automatic shaking apparatus of a fire extinguishing agent charging apparatus according to embodiment 3 of the present invention;

fig. 3 is a schematic structural view of an automatic shaking apparatus of a fire extinguishing agent charging apparatus according to embodiment 4 of the present invention;

fig. 4 is a flowchart of a fire extinguishing agent charging method according to embodiment 5 of the present invention.

Description of the symbols:

1 storage container three 23 nitrogen low pressure side ball valve

2 helium high pressure side ball valve 24 check valve four

3 helium high pressure side pressure gauge 25 fills dress total ball valve

4 helium pressure regulating valve 26 filling pressure gauge

5 helium low pressure side pressure gauge 27 fire extinguisher

6 helium low pressure side ball valve 28 pressurization ball valve

7 check valve III 29 storage container II

8 evacuation ball valve 30 outlet metering valve

9 vacuum gauge 31 check valve II

10 vacuum pump 32 weighing mechanism

11 storage container-33 base

12 outlet ball valve 34 positioning plate

13 fire extinguishing agent pressure gauge 35 expansion piece

14 fill ball valve 36 positioning barrel

15 check valve one 37 support barrel

16 evacuation valve 38 spring

17 pressure relief valve 39 slide

18 storage container four 40 driving motor

19 nitrogen high pressure side ball valve 41 gear one

20 nitrogen high-pressure side pressure gauge 42 gear II

21 nitrogen pressure regulating valve 43 turntable

22 nitrogen low pressure side pressure gauge

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1

Referring to fig. 1, the present embodiment provides a fire extinguishing agent charging apparatus for charging a fire extinguisher 27 with a fire extinguishing agent. The fire extinguishing agent filling equipment comprises a vacuum pump 10, a first storage container 11, a first filling assembly, a second storage container 29, a second filling assembly, a third storage container 1, a third filling assembly, a fourth storage container 18, a fourth filling assembly, a vacuumizing assembly, a filling control assembly, a pressure regulating assembly, a pressurizing ball valve 28 and a weighing mechanism 32. It should be noted here that the constituent structures of the present embodiment may be connected by a plurality of pipes, and the sizes of the pipes may be different. In the present embodiment, 316L stainless steel ferrules with an outer diameter of 1/4 inches were selected for all gas lines, and the pressure resistance was 35 MPa. All parts of the fire extinguishing agent filling equipment are connected with a process gas circuit through mechanical connection and electric cables to form the filling equipment.

The vacuum pump 10 is used to evacuate the fire extinguisher 27. The vacuum pump 10 may be an existing vacuum pump, and the gas in the fire extinguisher 27 is pumped away by the vacuum pumping assembly. Wherein, the vacuum-pumping assembly comprises a vacuum-pumping ball valve 8 and a vacuum gauge 9. The vacuum ball valve 8 is installed between the vacuum pump 10 and the fire extinguisher 27, and is used to adjust the suction amount of the vacuum pump 10 to the fire extinguisher 27. The vacuum gauge 9 is disposed between the vacuum-pumping ball valve 8 and the vacuum pump 10, and is used for indicating the degree of vacuum when the vacuum pump 10 pumps vacuum. In this embodiment, the pumping speed of the vacuum pump 10 is 16.5m ³H, ultimate full pressure of 2X 10 ^-3mbar. The measuring range of the vacuum meter 9 can be 0-250kPa, and the precision is +/-1.5 percent of the measuring range. The vacuum ball valve 8 can be a 316L stainless steel ball valve with 1/4-inch ferrule pipe joints at two ends, the pressure rating of the room temperature (37 ℃) is 17.2MPa, and the Cv value is 0.6.

The storage container I11 is used for storing at least one fire extinguishing agent, and the type of the fire extinguishing agent can be selected according to actual needs. In the embodiment, the first storage container 11 is a storage tank, but other storage structures may be selected for the first storage container 11 in other embodiments. The first filling assembly is used for filling the fire extinguishing agent in the first storage container 11 into the fire extinguisher 27, and can send the fire extinguishing agent to the fire extinguisher 27 through a plurality of pipelines.

In this embodiment, the filling assembly one comprises an outlet ball valve 12, a fire suppressant pressure gauge 13, a filling ball valve 14 and a check valve one 15, which are connected in sequence by a pipeline. An outlet ball valve 12 is installed at the outlet of the storage container one 11 and is used to regulate the flow of the fire extinguishing agent flowing out of the storage container one 11. The fire extinguishing agent pressure gauge 13 is used for detecting and displaying the storage pressure of the fire extinguishing agent in the first storage container 11, the range is 0-16MPa, and the accuracy is +/-1.5% of the range. The fill ball valve 14 is used to regulate the flow of fire suppressant from the outlet ball valve 12 to the fire extinguisher 27. The first check valve 15 is disposed next to the fill ball valve 14, i.e., on the side of the fill ball valve 14 adjacent to the fire extinguisher 27, and serves to block the flow of the fire extinguishing agent in the fire extinguisher 27 to the first storage container 11. Wherein the range of the fire extinguishing agent pressure gauge 13 is 0-16MPa, and the precision is +/-1.5% of the range. The outlet ball valve 12 and the fill ball valve 14 may be implemented with 1/4 inch ferrule fittings on both ends, a 316L stainless steel ball valve with a room temperature (37℃.) pressure rating of 17.2MPa and a Cv value of 0.6.

The second storage container 29 is used for storing and filling a solvent matched with the fire extinguishing agent, wherein the solvent can be methanol, fire extinguishing agent azeotrope and the like, and can be used as a solvent of the fire extinguishing agent, so that some kinds of fire extinguishing agents can be dissolved in the solvent for storage. The second filling assembly is used for filling the solvent in the second storage container 29 into the fire extinguisher 27. In this embodiment, the second storage container 29 is a solvent storage tank, which can be selected in shape and structure according to the actual equipment requirement, so as to store enough solvent.

In this embodiment, the filling assembly two includes an outlet metering valve 30 and a check valve two 31. An outlet metering valve 30 is installed at the outlet of the second storage container 29 and is used to regulate the flow of solvent flowing out of the second storage container 29 to the fire extinguisher 27. Wherein, the adjusting precision of the outlet metering valve 30 is required to meet the requirement of solvent filling quality control. The second check valve 31 is next to the outlet metering valve 30, that is, is disposed on a side of the outlet metering valve 30 close to the fire extinguisher 27, and is used for blocking the solvent in the fire extinguisher 27 from flowing into the second storage container 29. The outlet metering valve 30 may be selected from a 316L stainless steel ball valve with 1/4 inch ferrule fittings on both ends, a room temperature (37 ℃) pressure rating of 17.2MPa, and a Cv value of 0.6. Of course, the outlet metering valve (30) can also adopt a bellows seal metering valve, the micrometer handle measures the position of the valve rod in 0.025mm increments, the flow coefficient is 0.019, and the upper limit of the working pressure is 4.82 MPa.

Storage vessel three 1 is used to store helium gas, which may be used for leak detection purposes. The storage container three 1 of the present embodiment adopts a helium cylinder, and has a capacity of 40L and a working pressure of 15MPa, while it can adopt a helium storage structure of other structure in other embodiments. And the filling assemblies III are used for filling the helium in the storage container III 1 into the fire extinguisher 27, the assemblies can convey the helium into the fire extinguisher 27 after multiple treatments, the helium can be detected conveniently, and whether the fire extinguisher leaks or not is judged by detecting the helium.

In this embodiment, the third filling assembly includes a helium high-pressure side ball valve 2, a helium high-pressure side pressure gauge 3, a helium pressure regulating valve 4, a helium low-pressure side pressure gauge 5, a helium low-pressure side ball valve 6, and a check valve three 7, which are connected in sequence. A helium high pressure side ball valve 2 is provided at the outlet of the storage container three 1 and serves to adjust the flow rate of helium gas flowing out of the storage container three 1 to the fire extinguisher 27. The helium high-pressure side pressure gauge 3 is used for detecting and displaying the pressure of helium in the storage container III 1, the range is 0-4000psi, and the precision is +/-1.5% of the range. The helium pressure regulating valve 4 is used for regulating the pressure of helium gas which is circulated to the fire extinguisher 27 to perform leak detection of the fire extinguishing agent in the fire extinguisher 27. The output pressure range of the helium pressure regulating valve 4 needs to meet the helium pressure range used for leak detection of the fire extinguisher 27, the input highest pressure of the helium pressure regulating valve is 15MPa, and the output highest pressure of the helium pressure regulating valve is 10 psi. The helium low pressure side pressure gauge 5 is arranged between the helium pressure regulating valve 4 and the fire extinguisher 27 and is used for detecting and displaying the pressure of helium flowing out of the helium pressure regulating valve 4 to the fire extinguisher 27, the measuring range is 0-20psi, and the precision is +/-1.5% of the measuring range. The helium low pressure side ball valve 6 is used for regulating the flow rate of helium flowing out from the helium pressure regulating valve 4 to the fire extinguisher 27. The third check valve 7 is next to the helium low pressure side ball valve (6), i.e., is disposed on the side of the helium low pressure side ball valve 6 close to the fire extinguisher 27, and is used for blocking the helium gas in the fire extinguisher 27 from flowing into the storage container three 1. In this embodiment, both the helium high pressure side ball valve 2 and the helium low pressure side ball valve 6 can be a 316L stainless steel ball valve with 1/4-inch ferrule fittings at both ends, a room temperature (37 ℃) pressure rating of 17.2MPa, and a Cv value of 0.6.

The storage container four 18 is used to store nitrogen gas and may be a nitrogen cylinder, although other configurations and shapes of storage structures may be used. The filling assemblies four are used for filling the nitrogen in the storage container four 18 into the fire extinguisher 27, and the assemblies send the nitrogen into the fire extinguisher 27 through a nitrogen pipeline for pressurization so as to increase the air pressure in the fire extinguisher 27, thereby facilitating the discharge of the gas in the fire extinguisher 27 during fire extinguishing and improving the fire extinguishing efficiency of the fire extinguisher 27.

In the present embodiment, the fourth filling assembly includes a nitrogen gas high pressure side ball valve 19, a nitrogen gas high pressure side pressure gauge 20, a nitrogen gas pressure regulating valve 21, a nitrogen gas low pressure side pressure gauge 22, a nitrogen gas low pressure side ball valve 23, and a check valve four 24, which are connected in sequence. A nitrogen high pressure side ball valve 19 is provided at the outlet of the storage container four 18 and serves to open or close the nitrogen gas flowing out of the storage container four 18 to the fire extinguisher 27. A nitrogen high pressure side pressure gauge 20 is used to measure and display the pressure of the nitrogen in the reservoir four 18, with a range of 0-4000psi to within + -1.5% of the range. The nitrogen pressure regulating valve 21 is used for regulating the pressure of nitrogen flowing to the fire extinguisher 27 to pressurize the fire extinguishing agent in the fire extinguisher 27, and has a maximum input pressure of 3600psi and a pressure regulating range of 0-1500 psi. The nitrogen low pressure side pressure gauge 22 is provided next to the nitrogen pressure regulating valve 21, i.e., on the side of the nitrogen pressure regulating valve 21 close to the fire extinguisher 27, and detects and displays the pressure of the nitrogen gas flowing out from the nitrogen pressure regulating valve 21 to the fire extinguisher 27. The nitrogen low pressure side ball valve 23 is used to regulate the flow rate of nitrogen gas flowing out from the nitrogen pressure regulating valve 21 to the fire extinguisher 27. The check valve IV 24 is disposed next to the nitrogen low pressure side ball valve 23, i.e., on the side of the nitrogen low pressure side ball valve 23 adjacent to the fire extinguisher 27, and serves to block the passage of nitrogen gas from the fire extinguisher 27 to the storage container IV 18. In this embodiment, both the nitrogen high pressure side ball valve 19 and the nitrogen low pressure side ball valve 23 can be made of 1/4-inch ferrule fittings, and are 316L stainless steel ball valves with a pressure rating of 17.2MPa and a Cv value of 0.6 at room temperature and 37 ℃. The minimum cracking pressure of the first check valve 15, the second check valve 31, the third check valve 7, and the fourth check valve 24 is 2psi, and the minimum return pressure is 6psi (reverse pressure). These check valves prevent the backflow of the filling material during filling and facilitate the filling of the fire extinguisher 27. The measuring ranges of the nitrogen high-pressure side pressure gauge 20 and the nitrogen low-pressure side pressure gauge 22 are 0-16MPa, and the precision is +/-1.5% of the measuring range.

In this embodiment, the fill control assembly includes a fill master ball valve 25 and a fill pressure gauge 26. The filling main ball valve 25 is used for sending the fire extinguishing agent formed by the combination of the fire extinguishing agent filled in the filling assembly I, the solvent filled in the filling assembly II, the helium filled in the filling assembly III and the nitrogen filled in the filling assembly IV into the fire extinguisher 27, and controlling the filling amount of the fire extinguishing agent and the vacuum degree of the fire extinguisher 27 extracted by the vacuum pump 10. The filling pressure gauge 26 is used to display the pressure inside the fire extinguisher 27, and should be an absolute pressure gauge, with a precision that meets the precision measurement requirements for filling helium, fire extinguishing agents and nitrogen, and should be installed as close as possible to the filling opening of the fire extinguisher 27. In this embodiment, the total fill ball valve 25 may be implemented as a 316L stainless steel ball valve with 1/4 inch ferrule fittings on both ends, a room temperature (37℃.) pressure rating of 17.2MPa, and a Cv value of 0.6. The measuring range of the charging pressure gauge 26 is 0-5 MPa, the accuracy is +/-0.04% of the measuring range, and the distance from the pressure measuring port to the filling port of the fire extinguisher 27 is 10 cm.

Wherein the pressure regulating assembly comprises an evacuation valve 16 and a pressure relief valve 17. The evacuation valve 16 is used to vent gas from the conduits formed between the first, second, third and fourth fill assemblies and the fire extinguisher 27. The relief valve 17 is arranged between the filling main ball valve 25 and the fire extinguisher 27 and is used for automatic pressure relief when the filling pressure is higher than a preset pressure of six. The adjustable actuation pressure of the pressure relief valve 17 is in the range of 2.41 to 5.17MPa, in this example to 4.5 MPa. In this embodiment, evacuation valve 16 may be implemented as a 316L stainless steel ball valve with 1/4 inch ferrule fittings on both ends, a room temperature (37℃.) pressure rating of 17.2MPa, and a Cv value of 0.6.

In this embodiment, the nitrogen pressure regulating valve 21 and the nitrogen low pressure side ball valve 23 are communicated with the second storage container 29 through at least one pressurizing pipeline, so that high pressure nitrogen is charged into the second storage container 29 for pressurization. The first filling assembly, the third filling assembly and the fourth filling assembly are used for controlling filling materials by arranging at least two valves, one valve is close to the outlet position of the container, the other valve is close to the fire extinguisher 27, on one hand, double control can be realized, on the other hand, a pressure gauge is arranged between the two valves, the pressure of the material output by the first valve can be detected in time, and the second valve is opened when the pressure of the material reaches the requirement so that the material enters the fire extinguisher 27, so that the stability of filling the fire extinguishing agent is improved, and the two valves can realize the pressurization effect of gas due to the arrangement of the filling ball valve 14 and the nitrogen pressure regulating valve 21. A pressurized ball valve 28 is mounted on the mixing line and is used to regulate the flow of nitrogen from storage vessel four 18 to storage vessel two 29. The weighing mechanism 32 is used to weigh the fire extinguishing agent charged to the fire extinguisher 27.

When the fire extinguishing agent is filled, the fire extinguishing agent filling device is used for firstly enabling the vacuum pump 10 to vacuumize the fire extinguisher 27 until the internal pressure of the fire extinguisher 27 is lower than a preset pressure I, then filling at least one solvent stored in the storage container II 29 into the fire extinguisher 27 through the filling assembly II, filling helium gas which is stored in the storage container III 1 and has the air pressure of a preset pressure II into the fire extinguisher 27 through the filling assembly III, then filling at least one fire extinguishing agent which is stored in the storage container I11 and has the weight of a preset weight into the fire extinguisher 27 through the filling assembly, and finally filling nitrogen gas stored in the storage container IV 18 into the fire extinguisher 27; wherein, when filling nitrogen gas, fire extinguishing agent filling equipment fills nitrogen gas of a preset pressure three through filling in subassembly quadriversal fire extinguisher 27 earlier, repeats again: the fire extinguisher 27 is shaken for a preset time until the pressure inside the fire extinguisher 27 is less than a preset pressure four, then the nitrogen with a preset pressure five is filled into the fire extinguisher 27 through the filling assembly four-way until the pressure inside the fire extinguisher 27 is within a preset pressure range, and the filling is finished. Specifically, the fire extinguishing agent charging apparatus of the present embodiment performs the following steps (a) - (e)), which may be directly performed by the controller provided in the fire extinguishing agent charging apparatus, or may be performed by other control components of the fire extinguishing agent charging apparatus. In this embodiment, before these steps are performed, preparation is performed, specifically, the filling clamp of the fire extinguisher 27 is connected with the hose connector (the end of the connector contains the high-precision pressure gauge and the stop valve) of the filling device, then the hose connector is placed on an electronic scale to be weighed, and the filling clamp is screwed to the end of the hose connector and then is unscrewed reversely for 1 circle.

(a) The vacuum pump 10 is caused to evacuate the fire extinguisher 27 until the internal pressure is below a preset pressure one. Specifically, in the present embodiment, the vacuum is applied to the fire extinguisher 27 by turning on the vacuum pump 10 and turning on the vacuum ball valve 8 until the pressure indicated by the vacuum gauge 9 is lower than 10 Pa.

(b) The solvent is filled into the fire extinguisher 27 through the second filling assembly. In this embodiment, the outlet metering valve 30 has a value of 1PSIG and the solvent injected into the extinguisher 27 is a methanol/nitrogen mixture, here selected according to the actual requirements.

(c) The three-way fire extinguisher 27 is filled with helium gas at a preset pressure of two through the filling assembly. Wherein the output pressure of the helium pressure regulating valve 4 is 1+1/0PSIG (6.9+6.9/0kPa) to charge the fire extinguisher 27 with helium. Of course, helium gas charged to this point can be used for leak detection.

(d) The fire extinguisher 27 is filled with a predetermined weight of fire suppressant by means of the filling assembly. Before filling, the fire extinguishing agent can be removed by an electronic scale, in this embodiment 1301, the shut-off valve is closed when the required weight is reached, i.e. the helium low pressure side ball valve 6 is closed, and after closing the excess fire extinguishing agent is discharged through the evacuation valve 16.

(e) Filling nitrogen gas: filling nitrogen gas with a preset pressure three into the four-way fire extinguisher 27 through the filling assembly; specifically, the storage container four 18 is opened, the nitrogen pressure regulating valve 21 is adjusted to the output pressure of the preset pressure three (which can be corrected according to the product filling pressure and temperature correction table), and then nitrogen is filled into the fire extinguisher 27 (during the nitrogen filling process, the filling joint is positioned below the central line of the fire extinguisher 27 to help the nitrogen dissolve in the fire extinguishing agent; care must be taken to ensure that the filling management does not affect the weighing); (ii) shaking the fire extinguisher 27 for a preset time until the pressure inside the fire extinguisher 27 is less than a preset pressure four; in this embodiment, the fire extinguisher 27 is shaken on the automatic shaking apparatus with the shut-off valve at the end of the filling hose closed, and the preset time may be set to 30 minutes, at which time the pressure in the fire extinguisher 27 is reduced; (iii) filling the four-way fire extinguisher 27 with nitrogen gas at a preset pressure of five through the filling assembly; in this embodiment, the stop valve at the end of the filling hose is opened, and the fire extinguisher 27 is filled with nitrogen gas at a predetermined pressure and then closed; (iv) repeating (ii) and (iii) until the pressure inside the fire extinguisher 27 is within a preset pressure range and the filling is finished. In this example, the end of filling is indicated by a high-precision pressure gauge at the end of the filling hose indicating that the pressure change before and after the end of the filling hose is within 1PSIG (6.9kPa), and finally the filling jig is tightened. Fill into nitrogen gas in fire extinguisher 27 like this repeatedly, guarantee the gaseous misce bene in fire extinguisher 27, and then make inside atmospheric pressure balanced, just end filling after the atmospheric pressure in fire extinguisher 27 reaches the pressure requirement like this, thereby guarantee to fill the stability of atmospheric pressure in the fire extinguisher 27 after the dress, improve the filling volume of fire extinguishing agent, owing to filled helium, can in time carry out the leak hunting when fire extinguisher 27 leaks, facilitate the use, owing to can fill the solvent simultaneously, can satisfy the filling requirement of the fire extinguishing agent of various demands.

In conclusion, the fire extinguishing agent charging device of the present embodiment has the following advantages:

1. the fire extinguishing agent filling device is characterized in that a vacuum pump of the fire extinguishing agent filling device can vacuumize a fire extinguishing agent 27 so as to fill the fire extinguishing agent 27 in a follow-up mode, the fire extinguishing agent stored in a storage container I11 is filled into the fire extinguishing agent 27 through a filling assembly I, a solvent in a storage container II 29 is matched with the fire extinguishing agent, and the fire extinguishing agent is filled into the fire extinguishing agent 27 through a filling assembly II, so that the fire extinguishing agent of some types is dissolved into the solvent for storage. Helium of the storage container III 1 of the filling device is filled into the fire extinguisher 27 through the filling assembly III, the helium can be used for detecting leakage conveniently on one hand, whether the fire extinguisher 27 leaks or not is judged in a helium detecting mode, on the other hand, vacuumizing and filling of a fire extinguishing agent are facilitated, and then the filling speed and the filling efficiency of the fire extinguishing agent are improved. The nitrogen in the storage container four 18 of the filling device is filled into the fire extinguisher 27 through the filling assembly four, so that the air pressure inside the fire extinguisher 27 can be increased, the gas in the fire extinguisher 27 is conveniently discharged during fire extinguishing, and the fire extinguishing efficiency of the fire extinguisher 27 is improved.

2. The fire extinguishing agent charging apparatus, which discharges a part of gas in the fire extinguisher 27 first when charging the fire extinguishing agent, so as to form a negative pressure in the fire extinguisher 27 with respect to the other containers, then filling the solvent, helium gas and fire extinguishing agent into the fire extinguisher 27 respectively, finally filling nitrogen gas into the fire extinguisher 27 repeatedly, and the fire extinguisher 27 is shaken in the process of each filling, so as to ensure that the gas in the fire extinguisher 27 is uniformly mixed, and thus the internal air pressure, is equalized, so that the filling is not finished until the air pressure in the fire extinguisher 27 reaches the pressure requirement, thereby ensuring the stability of the air pressure in the filled fire extinguisher 27, improving the filling amount of the fire extinguishing agent, moreover, the helium is filled, so that the leakage detection can be performed in time when the fire extinguisher 27 leaks, the use is convenient, and meanwhile, the filling requirement of the fire extinguishing agent with various requirements can be met due to the fact that the solvent can be filled.

3. The fire extinguishing agent filling equipment is characterized in that a first filling assembly, a second filling assembly, a third filling assembly and a fourth filling assembly are respectively provided with a check valve, so that the circulation of filling materials in the filling process can be prevented, the first filling assembly, the third filling assembly and the fourth filling assembly are used for controlling the filling materials by arranging at least two valves, one valve is close to an outlet part of a container, the other valve is close to a fire extinguisher 27, on one hand, double control can be realized, on the other hand, a pressure gauge is arranged between the two valves, the pressure of the material output by the first valve can be timely detected, and the second valve can be opened when the pressure of the material reaches the requirement so that the material can enter the fire extinguisher 27, so that the stability of filling of the fire extinguishing agent is improved, and the two valves can realize the pressurization effect of gas due to the arrangement of a filling ball valve 14.

4. The fire extinguishing agent filling equipment, the filling control assembly of which is provided with a filling main ball valve 25, can control the whole filling and vacuumizing processes, and can display air pressure through a filling pressure gauge 26, so that the filling can be stopped when the air pressure in a fire extinguisher 27 is too high. In addition, the filling equipment can also discharge gas in the pipeline through the emptying valve 16 of the pressure regulating assembly, and realize automatic pressure relief through the pressure relief valve 17, so that the filling safety is improved.

Example 2

This embodiment provides a fire extinguishing agent charging apparatus, which adds a controller to embodiment 1, the controller being capable of implementing steps (a) to (e) of embodiment 1, and the valves used in this embodiment are all electronic valves, and the valves are controlled by electronic control. In this embodiment, an electronic display screen and an alarm may be added. The electronic display screen can directly show the pressure that each pressure gauge shows, and the alarm sets up multiple alarm information to can send alarm information one when the pressure that fire extinguishing agent manometer 13 detected is less than a pressure threshold value, send alarm information two when the pressure that detects at helium high-pressure side manometer 3 is less than a pressure threshold value two, send alarm information three when the pressure that detects at nitrogen gas high-pressure side manometer 20 is less than a pressure threshold value three. When fire extinguishing agent filling personnel find that the alarm sends one or more of alarm information one, alarm information two, alarm information three, then need handle corresponding storage container to supply corresponding gas, prevent the problem that gas is not enough and bring, guarantee the normal use of filling equipment.

Example 3

Referring to fig. 2, the present embodiment provides a fire extinguishing agent charging apparatus to which an automatic shaking device is added on the basis of embodiment 1.

The automatic shaking device comprises a base 33, two positioning plates 34, at least one telescopic member 35, a positioning barrel 36, a supporting barrel 37 and a plurality of elastic components. The two positioning plates 34 are arranged in parallel and are mounted on the base 33. The positioning barrel 36 is rotatably installed between the two positioning plates 34 and has a distance with the base 33. The telescopic member 35 is mounted on the base 33, and the telescopic end is fixed to the positioning barrel 36 to drive the positioning barrel 36 to rotate relative to the base 33. The support tub 37 is mounted on the base 33 and covers the positioning tub 36. A plurality of elastic members, each including a spring 38 and a slide plate 39, are disposed between the positioning tub 36 and the support tub 37. One end of the spring 38 is fixed to the inner wall of the support tub 37, and the slide plate 39 is fixed to the other end of the spring 38 and abuts against the outer wall of the fire extinguisher 27. In which the extinguisher 27 is inserted on the positioning barrel 36 and shaken in the supporting barrel 37 by the driving action of the telescopic member 35. Like this, fire extinguisher 27 can rock under the impetus of location bucket 36, and the elastic component can provide the restoring force for fire extinguisher 27 can not excessively squint, but also can produce the reverse action, improves fire extinguisher 27's the efficiency of rocking, thereby makes the fire extinguishing agent that is arranged in fire extinguisher 27 can the mixing.

Example 4

Referring to fig. 3, the present embodiment provides a fire extinguishing agent charging apparatus, which adds a part of the structure to that of embodiment 3, wherein the automatic shaking device further includes a driving motor 40, a first gear 41, a second gear 42, and a rotating disc 43. The turntable 43 is rotatably mounted on the base 33, and the positioning plate 34 and the telescopic member 35 are fixed on the circular surface. The second gear 42 is mounted on the turntable 43 and is meshed with the first gear 41. The driving motor 40 is installed on the base 33 and is used for driving the first gear 41 to rotate. Thus, the driving motor 40 will drive the first gear 41 to rotate and further drive the second gear 42 to rotate, so as to rotate the turntable 43, thereby driving the fire extinguisher 27 to rotate and further mixing the fire extinguishing agent in the fire extinguisher 27.

Example 5

Referring to fig. 4, the present embodiment provides a fire extinguishing agent charging method, which is applied to the fire extinguishing agent charging apparatus of embodiment 1 or embodiment 2. The fire extinguishing agent filling method comprises the following steps:

(a) enabling the vacuum pump 10 to vacuumize the fire extinguisher 27 until the internal pressure is lower than a preset pressure I;

(b) filling the solvent into the fire extinguisher 27 through the second filling assembly;

(c) driving the filling assembly three-way fire extinguisher 27 to fill helium with a preset pressure II;

(d) filling the fire extinguisher 27 with a predetermined weight of fire suppressant using the filling assembly;

(e) filling nitrogen gas: filling nitrogen gas with a preset pressure three into the four-way fire extinguisher 27 through the filling assembly; (ii) shaking the fire extinguisher 27 for a preset time until the pressure inside the fire extinguisher 27 is less than a preset pressure four; (iii) filling the four-way fire extinguisher 27 with nitrogen gas at a preset pressure of five through the filling assembly; (iv) repeating (ii) and (iii) until the pressure inside the fire extinguisher 27 is within a preset pressure range and the filling is finished.

Example 6

The present embodiment provides a fire extinguishing system including the fire extinguishing agent charging apparatus of embodiment 1 and a plurality of fire extinguishers 27. In which the fire extinguisher 27 serves as a filling object of the fire extinguishing agent filling apparatus to contain the fire extinguishing agent.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. An extinguishing agent filling apparatus for filling an extinguishing agent into a fire extinguisher (27), characterized in that it comprises a vacuum pump (10), a first storage container (11), a first filling assembly, a second storage container (29), a second filling assembly, a third storage container (1), a third filling assembly, a fourth storage container (18) and a fourth filling assembly; the fire extinguishing agent filling device is used for firstly enabling the vacuum pump (10) to vacuumize the fire extinguisher (27) until the internal pressure of the fire extinguisher (27) is lower than a first preset pressure, then filling at least one solvent stored in the second storage container (29) into the fire extinguisher (27) through the second filling assembly, filling helium gas which is stored in the third storage container (1) and has a second preset pressure into the three-way fire extinguisher (27) through the second filling assembly, then filling at least one fire extinguishing agent which is stored in the first storage container (11) and has a preset weight into the fire extinguisher (27) through the filling assembly, and finally filling nitrogen gas which is stored in the fourth storage container (18) into the fire extinguisher (27); when the nitrogen is filled, the fire extinguishing agent filling equipment fills nitrogen with a preset pressure of three in the four-way fire extinguisher (27) through the filling assembly, and then the steps are repeated: the fire extinguisher (27) is shaken for a preset time until the pressure inside the fire extinguisher (27) is less than a preset pressure four, then the nitrogen with a preset pressure five is filled into the four-way fire extinguisher (27) through the filling assembly until the pressure inside the fire extinguisher (27) is within a preset pressure range, and then filling is finished.

2. Fire suppressant filling apparatus according to claim 1, wherein said filling assembly one comprises an outlet ball valve (12), a fire suppressant pressure gauge (13), a filling ball valve (14) and a check valve one (15); the outlet ball valve (12) is arranged at the outlet of the first storage container (11) and is used for regulating the flow of the fire extinguishing agent flowing out of the first storage container (11); the fire extinguishing agent pressure gauge (13) is used for detecting and displaying the storage pressure of the fire extinguishing agent in the first storage container (11); the filling ball valve (14) is used for regulating the flow of the fire extinguishing agent flowing out of the outlet ball valve (12) to the fire extinguisher (27); the first check valve (15) is next to the filling ball valve (14) and is used for blocking the fire extinguishing agent in the fire extinguisher (27) from flowing into the first storage container (11).

3. The fire suppressant filling apparatus of claim 1, wherein said second filling assembly comprises a second outlet metering valve (30) and a second check valve (31); an outlet metering valve (30) is arranged at the outlet of the second storage container (29) and is used for regulating the flow rate of the solvent flowing out of the second storage container (29) to the fire extinguisher (27); the second check valve (31) is next to the outlet metering valve (30) and is used for blocking the solvent in the fire extinguisher (27) from flowing to the second storage container (29).

4. The fire extinguishing agent filling apparatus according to claim 1, wherein the filling assembly three comprises a helium high-pressure side ball valve (2), a helium high-pressure side pressure gauge (3), a helium pressure regulating valve (4), a helium low-pressure side pressure gauge (5), a helium low-pressure side ball valve (6), and a check valve three (7); the helium high-pressure side ball valve (2) is arranged at the outlet of the storage container III (1) and is used for adjusting the flow of helium flowing out of the storage container III (1) to the fire extinguisher (27); the helium high-pressure side pressure gauge (3) is used for detecting and displaying the pressure of helium in the storage container III (1); the helium pressure regulating valve (4) is used for regulating the pressure of helium which flows to the fire extinguisher (27) so as to carry out leak detection on the fire extinguishing agent in the fire extinguisher (27); the helium low-pressure side pressure gauge (5) is arranged between the helium pressure regulating valve (4) and the fire extinguisher (27) and is used for detecting and displaying the pressure of helium flowing out of the helium pressure regulating valve (4) to the fire extinguisher (27); the helium low-pressure side ball valve (6) is used for adjusting the flow of helium flowing out of the helium pressure regulating valve (4) to the fire extinguisher (27); and the check valve III (7) is next to the helium low-pressure side ball valve (6) and is used for blocking the helium in the fire extinguisher (27) from flowing into the storage container III (1).

5. The fire extinguishing agent charging apparatus according to claim 1, wherein the charging assembly four includes a nitrogen gas high pressure side ball valve (19), a nitrogen gas high pressure side pressure gauge (20), a nitrogen gas pressure regulating valve (21), a nitrogen gas low pressure side pressure gauge (22), a nitrogen gas low pressure side ball valve (23), a check valve four (24); a nitrogen high-pressure side ball valve (19) is arranged at the outlet of the storage container IV (18) and is used for opening or closing the nitrogen flowing out of the storage container IV (18) to the fire extinguisher (27); the nitrogen high-pressure side pressure gauge (20) is used for detecting and displaying the pressure of the nitrogen in the storage container IV (18); the nitrogen pressure regulating valve (21) is used for regulating the pressure of nitrogen which flows to the fire extinguisher (27) so as to pressurize the fire extinguishing agent in the fire extinguisher (27); the nitrogen low-pressure side pressure gauge (22) is next to the nitrogen pressure regulating valve (21) and is used for detecting and displaying the pressure of the nitrogen flowing out of the nitrogen pressure regulating valve (21) to the fire extinguisher (27); the nitrogen low-pressure side ball valve (23) is used for adjusting the flow of nitrogen flowing out of the nitrogen pressure adjusting valve (21) to the fire extinguisher (27); the fourth check valve (24) is next to the ball valve (23) at the low pressure side of nitrogen gas and is used for blocking the nitrogen gas in the fire extinguisher (27) from flowing into the storage container (18).

6. The fire suppressant filling apparatus of claim 1, wherein said fire suppressant filling apparatus further comprises:

the vacuum-pumping assembly comprises a vacuum-pumping ball valve (8) and a vacuum meter (9); the vacuum-pumping ball valve (8) is arranged between the vacuum pump (10) and the fire extinguisher (27) and is used for adjusting the air extraction amount of the vacuum pump (10) to the fire extinguisher (27); the vacuum gauge (9) is arranged between the vacuum-pumping ball valve (8) and the vacuum pump (10) and is used for displaying the vacuum degree of the vacuum pump (10) during vacuum pumping.

7. The fire suppressant filling apparatus of claim 1, wherein said fire suppressant filling apparatus further comprises:

a filling control assembly comprising a filling main ball valve (25) and a filling pressure gauge (26); the filling main ball valve (25) is used for sending the fire extinguishing agent formed by the combination of the fire extinguishing agent filled in the filling assembly I, the solvent filled in the filling assembly II, the helium filled in the filling assembly III and the nitrogen filled in the filling assembly IV into a fire extinguisher (27), and controlling the filling amount of the fire extinguishing agent and the vacuum degree of the fire extinguisher (27) extracted by the vacuum pump (10); a charge pressure gauge (26) is used to indicate the pressure inside the fire extinguisher (27).

8. The fire suppressant filling apparatus of claim 1, wherein said fire suppressant filling apparatus further comprises:

the automatic shaking device comprises a base (33), two positioning plates (34), at least one telescopic piece (35), a positioning barrel (36), a supporting barrel (37) and a plurality of elastic components; the two positioning plates (34) are arranged in parallel and are arranged on the base (33); the positioning barrel (36) is rotatably arranged between the two positioning plates (34) and has a distance with the base (33); the telescopic piece (35) is arranged on the base (33), and the telescopic end is fixed with the positioning barrel (36) so as to drive the positioning barrel (36) to rotate relative to the base (33); the supporting barrel (37) is arranged on the base (33) and covers the positioning barrel (36); a plurality of elastic assemblies are arranged between the positioning barrel (36) and the supporting barrel (37), each elastic assembly comprises a spring (38) and a sliding plate (39); one end of the spring (38) is fixed on the inner wall of the supporting barrel (37), and the sliding plate (39) is fixed on the other end of the spring (38) and is attached to the outer wall of the fire extinguisher (27); wherein the extinguisher (27) is inserted on the positioning barrel (36) and is shaken in the supporting barrel (37) under the driving action of the telescopic piece (35).

9. Fire extinguishing agent charging apparatus according to claim 5, wherein the nitrogen pressure regulating valve (21) and the nitrogen low pressure side ball valve (23) are in communication with the second storage container (29) through at least one pressurizing line; the fire extinguishing agent charging apparatus further includes:

a pressurizing ball valve (28) installed on the mixing line and used for adjusting the flow rate of nitrogen flowing out of the storage container four (18) to the storage container two (29);

a weighing mechanism (32) for weighing the fire extinguishing agent filled into the fire extinguisher (27).

10. A fire extinguishing agent charging method applied to the fire extinguishing agent charging apparatus according to any one of claims 1 to 9, characterized by comprising the steps of:

(a) enabling the vacuum pump (10) to vacuumize the fire extinguisher (27) until the internal pressure is lower than a preset pressure I;

(b) filling the solvent into a fire extinguisher (27) through the second filling assembly;

(c) filling a helium gas with a preset pressure two into the three-way fire extinguisher (27) through the filling assembly;

(d) -filling a fire extinguisher (27) with a predetermined weight of fire suppressant using said filling assembly;

filling a nitrogen gas with a preset pressure three in a four-way fire extinguisher (27) through the filling assembly;

(ii) shaking the fire extinguisher (27) for a preset time until the pressure inside the fire extinguisher (27) is less than a preset pressure four;

(iii) filling a preset pressure of five nitrogen into the four-way fire extinguisher (27) through the filling assembly;

(iv) repeating (ii) and (iii) until the pressure inside the extinguisher (27) is within a preset pressure range and the filling is finished.