CN113233399B - Automatic fire extinguishing agent filling system with double filling and double control functions and method - Google Patents
Automatic fire extinguishing agent filling system with double filling and double control functions and method Download PDFInfo
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- CN113233399B CN113233399B CN202110491660.4A CN202110491660A CN113233399B CN 113233399 B CN113233399 B CN 113233399B CN 202110491660 A CN202110491660 A CN 202110491660A CN 113233399 B CN113233399 B CN 113233399B
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- fire extinguishing
- filling
- extinguishing agent
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67C—CLEANING, FILLING WITH LIQUIDS OR SEMILIQUIDS, OR EMPTYING, OF BOTTLES, JARS, CANS, CASKS, BARRELS, OR SIMILAR CONTAINERS, NOT OTHERWISE PROVIDED FOR; FUNNELS
- B67C3/00—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus; Filling casks or barrels with liquids or semiliquids
- B67C3/02—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67C—CLEANING, FILLING WITH LIQUIDS OR SEMILIQUIDS, OR EMPTYING, OF BOTTLES, JARS, CANS, CASKS, BARRELS, OR SIMILAR CONTAINERS, NOT OTHERWISE PROVIDED FOR; FUNNELS
- B67C3/00—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus; Filling casks or barrels with liquids or semiliquids
- B67C3/02—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus
- B67C3/22—Details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67C—CLEANING, FILLING WITH LIQUIDS OR SEMILIQUIDS, OR EMPTYING, OF BOTTLES, JARS, CANS, CASKS, BARRELS, OR SIMILAR CONTAINERS, NOT OTHERWISE PROVIDED FOR; FUNNELS
- B67C3/00—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus; Filling casks or barrels with liquids or semiliquids
- B67C3/02—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus
- B67C3/22—Details
- B67C3/28—Flow-control devices, e.g. using valves
- B67C3/287—Flow-control devices, e.g. using valves related to flow control using predetermined or real-time calculated parameters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
- F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
- F17C2223/0107—Single phase
- F17C2223/0123—Single phase gaseous, e.g. CNG, GNC
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/04—Indicating or measuring of parameters as input values
- F17C2250/0404—Parameters indicated or measured
- F17C2250/043—Pressure
Abstract
The invention discloses an automatic fire extinguishing agent filling system with double filling and double control functions and a method thereof, wherein the automatic fire extinguishing agent filling system comprises a fire extinguishing agent filling pipeline, an auxiliary gas filling pipeline, a residual fire extinguishing agent filling pipeline and a measurement and control system, the front ends of the fire extinguishing agent filling pipeline and the auxiliary gas filling pipeline are respectively connected with an auxiliary gas source, a fire extinguishing agent storage tank is arranged on the fire extinguishing agent filling pipeline, the auxiliary gas filling pipeline comprises a high-pressure filling working condition and a low-pressure filling working condition, the measurement and control system comprises a controller, the high-pressure filling working condition and the low-pressure filling working condition of the auxiliary gas filling pipeline share one filling pipeline, and the output end of the fire extinguishing agent filling pipeline and the output end of the auxiliary gas filling pipeline are connected with the input port of a fire extinguishing bottle in parallel. The invention can automatically control the filling weight of the fire extinguishing agent and the filling pressure in the fire extinguishing bottle, and the fire extinguishing agent residual in the pipeline can be refilled to the fire extinguishing agent storage tank only by connecting the fire extinguishing bottle once in the filling process.
Description
Technical Field
The invention relates to a fire-fighting fire-extinguishing bottle, in particular to an automatic fire-extinguishing agent filling system with double filling and double control functions and a method thereof.
Background
In a paper design and implementation of an airplane fire prevention and extinguishing agent filling device published in the journal of hydraulic and pneumatic in the 1 st stage of 2017 of Wang Zhanyong, zou Gang and Liu Zhengang of the institute of air and naval engineering, the airplane fire prevention and extinguishing agent filling device is mainly composed of a hydraulic system, a nitrogen system, a fire prevention system, a fire extinguishing system, a test system and an industrial control system. The principle of the fire-extinguishing agent filling device for the airplane is shown in figure 1, and the fire-extinguishing agent filling process is completed by two steps of filling and pressure supplementing. The filling is performed by connecting the fire bottle 19 to the filler neck 18 (station one), and by introducing nitrogen gas from the low-pressure line into the fire-extinguishing agent storage tank 16 as a power source, the fire-extinguishing agent is pressed into the fire bottle 19 to a predetermined weight. And the pressure supplement is to supplement the pressure of the nitrogen for the fire extinguishing bottle by a medium-high pressure nitrogen system after the fire extinguishing agent is filled.
The filling process comprises the following steps: when nitrogen from the nitrogen cylinder 1 is reduced to low-pressure after passing through the switch 7 and the pressure reducing valve 8, the outlet pressure is indicated by the pressure gauge 10, the overflow control is carried out by the safety valve 9 when the set pressure is exceeded, and after the switch 12 or the electromagnetic valve 13 is opened and powered on, the low-pressure nitrogen enters the fire extinguishing agent storage tank 16, so that the interior of the fire extinguishing agent storage tank 16 is pressurized, the fire extinguishing agent in the fire extinguishing agent storage tank 16 is directly pressed into the fire extinguishing bottle 19, the industrial control system monitors the pressure in the fire extinguishing bottle 19 in real time through the pressure transmitter 14 until the weight of the fire extinguishing agent weighed by the electronic scale reaches a standard value, and the switch 12 or the electromagnetic valve 13 is closed and powered off.
The concrete pressure supplementing process comprises the following steps: the fire extinguishing bottle 19 is detached from the filler pipe 17 and is connected through the filler pipe 37 (station two), the booster pump 25 is started, nitrogen is boosted to rated high pressure from low pressure in the nitrogen gas bottle 1, and enters the fire extinguishing bottle 19 through the safety valve 29, the electromagnetic valve 33, the heat exchanger 34 and the switch 36 until the pressure value in the fire extinguishing bottle reaches the specified pressure value.
The filling system makes active theoretical research and practical exploration on the aspects of fire extinguishing agent filling weight control and nitrogen filling pressure control, the scheme design is basically successful, but a plurality of defects exist, and the analysis is as follows:
1. in the process of filling two media (the fire extinguishing agent 1211 and the nitrogen), the fire extinguishing bottle needs to be connected twice, and the low-pressure filling and the high-pressure filling cannot be automatically switched, and manual switching is needed, so that the filling efficiency is low.
In fig. 1, when the fire extinguishing agent is filled, the interface of the fire extinguishing bottle 19 is externally connected with the fire extinguishing agent storage tank 16 through the nozzle 18 and the switch 17 (station one); when filling nitrogen, the connection of the first station is disconnected, and the fire-extinguishing bottle 19 is connected to the filler pipe 37 (the second station), so that the medium-pressure filling from the nitrogen gas bottle 1 through the switch 20 (or the electromagnetic valve 21) or the high-pressure filling through the switch 26 (or the high-pressure pump 25) can be completed. In short, the fire extinguishing bottle 19 is filled with two media, namely fire extinguishing agent and nitrogen, and needs to be connected twice, and the two media cannot be filled in one connection, so that the working efficiency is low.
When the nitrogen gas pressure is filled into the fire extinguishing bottle, the rated pressure range of the filled nitrogen gas of the fire extinguishing bottle 19 is P3 (9-11 MPa), the specific filling pressure value is related to the ambient temperature, the newly filled nitrogen gas pressure of the nitrogen gas bottle 1 is 12-12.5 MPa at most, and therefore, only the newly filled and full-pressure nitrogen gas bottle 1 can directly fill the rated pressure into the fire extinguishing bottle 19 through the medium-pressure pipeline (through the switch 20 or the electromagnetic valve 21). When the pressure of the nitrogen gas cylinder 1 is reduced along with the increase of the filling times, the switch 23 (or the electromagnetic valve 24) is opened, and the pressure is boosted by the booster pump 25 to reach the rated filling nitrogen pressure of the fire extinguishing bottle 19. Obviously, the medium-pressure filling (via the switch 20 or the solenoid valve 21) and the high-pressure filling (via the switch 23 or the solenoid valve 24, boosted by the booster pump 25) shown in fig. 1 are two-way pipelines, and can be realized only by switching on/off, and the filling efficiency is low.
2. The pipeline system filled with the fire extinguishing agent has no backfill function, so that the residual fire extinguishing agent is solidified to block the filling pipeline easily.
The fire extinguishing agent storage tank 16 is filled with fire extinguishing agent through the switch 17 and the filler neck 18, after the fire extinguishing agent is filled, a pipeline between the interface of the fire extinguishing agent storage tank 16 and the filler neck 18 is filled with residual liquid fire extinguishing agent, and the residual medium can be solidified and aged to influence the smoothness of the filling pipeline. The filling system does not have the function of backfilling the fire suppressant storage tank 16 with residual liquid fire suppressant prior to solidification. The next filling operation requires cleaning the residual solid medium. Such operations are cumbersome and inefficient.
3. The automatic pressure relief and decrement can not be realized when the pressure and the weight are overcharged, and the constant-value filling can be completed only by manual operation for many times, so the efficiency is low.
As shown in fig. 1, the fill control system does not provide closed loop control of the fire suppressant weighing system and fill valve when filling the fire suppression bottle 19 with fire suppressant. The weight control of the fire extinguishing agent is a cycle of experience leading, weight verification, insufficient continuous charging, over-high discharge and insufficient recharging. Similarly, the nitrogen pressure is filled, and the filling pressure measuring system and the filling valve system are not closed-loop controlled, so that the fire-extinguishing bottle 19 can be filled with the rated pressure and the rated weight repeatedly. The method only meets the requirement of single-piece or small-batch filling, and cannot meet the requirement of automatic, accurate and efficient mass production filling operation.
4. The filling loop and the components do not consider the influence of the corrosivity of the fire extinguishing agent, and functional faults are easy to occur.
The national standard GB4065 for fire extinguishing agents 1211 states that the substances contain acidic constituents, the acidity or the acidic constituents of which are less than or equal to 3mg/kg (measured as HBr). The joints, pipelines and elements from the fire extinguishing agent storage tank 16 to the fire extinguishing bottle 19 shown in fig. 1 do not consider weak acid corrosive action of the fire extinguishing agent on carbon steel materials, so that failures such as joint leakage, switch leakage, pipeline damage and the like are easily caused, the leakage of the fire extinguishing agent is caused, functional failures of a filling system are easily caused, and operation safety events of environment pollution and human body injury caused by the fire extinguishing agent are easily caused, which is not in accordance with the regulations and regulations in the aspects of environmental protection and safety.
5. The pipeline system filled with the fire extinguishing agent has no drying function, so that the water in the fire extinguishing agent cannot be removed, and the effectiveness of fire extinguishing is influenced.
1211 the national standard GB4065 for fire extinguishing agents stipulates that the water content of the substance is less than or equal to 20mg/kg. This moisture content causes partial hydrolysis of 1211, which forms an acidic aqueous solution and rust with 1211 the fire suppressant storage tank 16 during storage. This moisture content may freeze to clog the nozzles while spraying 1211, which is not permissible.
In FIG. 1, 1211 the fire extinguishing medium storage tank 16 is filled 1211 with the fire extinguishing bottle 19 through the switch 17 and the filler neck 18, and no gas dryer is provided in the filling line, so that moisture in the fire extinguishing medium storage tank 16 1211 can directly enter the fire extinguishing bottle 19, which may cause the above-mentioned malfunction, which is a defect in the system design and affects the filling reliability.
According to the knowledge, no matter the manufacturers of the fire extinguishing bottles related to the aircraft engines, the military aviation service enterprises, the domestic hydraulic and fire fighting industries, the same fire extinguishing bottle can fill (double-fill) two media of the fire extinguishing agent (1211) and the nitrogen, and has a plurality of defects in the aspects of the composition and the method of the device for controlling (double-control) the filling weight of the fire extinguishing agent and the filling pressure of the nitrogen, and no universally-approved technical scheme exists.
Disclosure of Invention
The invention aims to provide an automatic fire extinguishing agent filling system with double filling and double control functions and a method thereof, aiming at the defects of the prior art, wherein the automatic fire extinguishing agent filling system can complete all filling procedures by one-time connection, is typically used in the fields of production and maintenance of aircraft engine fire extinguishing bottles, maintenance of ground service troops and pressurized filling of fire extinguishing bottles for public security and fire fighting, and has accuracy, reliability and advancement.
In order to solve the technical problem, the invention provides a fire extinguishing agent automatic filling system with double filling and double control functions, which comprises a fire extinguishing agent filling pipeline, an auxiliary gas filling pipeline and a measurement and control system, wherein the front ends of the fire extinguishing agent filling pipeline and the auxiliary gas filling pipeline are respectively connected with an auxiliary gas source, a fire extinguishing agent storage tank is arranged on the fire extinguishing agent filling pipeline, the auxiliary gas filling pipeline comprises a high-pressure filling working condition and a low-pressure filling working condition, the measurement and control system comprises a controller, the high-pressure filling working condition and the low-pressure filling working condition of the auxiliary gas filling pipeline share one filling pipeline, and the output end of the fire extinguishing agent filling pipeline and the output end of the auxiliary gas filling pipeline are connected in parallel with the input port of a fire extinguishing bottle.
According to the invention, the high-pressure filling and low-pressure filling working conditions of the auxiliary gas filling pipeline share one filling pipeline, and the output end of the fire extinguishing agent filling pipeline and the output end of the auxiliary gas filling pipeline are connected in parallel with the input port of the fire extinguishing bottle, so that the fire extinguishing bottle is connected with the fire extinguishing bottle once, the filling of the fire extinguishing agent and the auxiliary gas can be realized, and the medium filling efficiency of the fire extinguishing bottle is greatly improved.
The utility model discloses a fire extinguishing bottle, including supplementary gaseous filling pipeline, weighing sensor, first pressure sensor, second pressure sensor, weighing sensor, fire extinguishing agent filling pipeline, supplementary gaseous filling pipeline, the booster that sets up the straight-through branch in area and pressure boost branch road on the supplementary gaseous filling pipeline, just the input of booster sets up the first pressure sensor who is used for detecting supplementary gaseous pressure value, the output of booster sets up the second pressure sensor who is used for detecting fire extinguishing bottle atmospheric pressure value, on weighing sensor was arranged in to the fire extinguishing bottle, first pressure sensor, second pressure sensor, weighing sensor insert respectively the input of controller, fire extinguishing agent filling pipeline with each solenoid valve on the supplementary gaseous filling pipeline inserts respectively the output of controller. When the detection value of the first pressure sensor is slightly equal to the rated pressure of the fire extinguishing bottle, the straight branch of the pressure booster is connected to the auxiliary gas filling pipeline, and when the detection value of the second pressure sensor is smaller than the rated pressure of the fire extinguishing bottle, the pressurizing branch of the pressure booster is automatically connected to the auxiliary gas filling pipeline.
The automatic fire extinguishing agent filling system with the double-filling and double-control functions further comprises a fire extinguishing bottle moisture absorption filling auxiliary gas pipeline and a fire extinguishing bottle moisture absorption discharging auxiliary gas pipeline which are used for removing moisture gas in the fire extinguishing bottle, and a residual fire extinguishing agent refilling pipeline which is used for refilling residual fire extinguishing agent in the fire extinguishing agent filling pipeline to the fire extinguishing bottle.
The residual fire extinguishing agent backfill pipeline comprises an auxiliary gas supply branch and a backfill branch which are connected with each other. And the backfill branch is simultaneously used as a rear end pipeline of the fire extinguishing agent filling pipeline.
The output end of the auxiliary gas source is provided with a first gas drier to prevent moisture in the auxiliary gas source from entering the fire extinguishing bottle to influence the fire extinguishing effectiveness of the fire extinguishing agent.
And a second gas dryer is arranged at the opening P of the fire extinguishing agent storage tank to remove moisture in the fire extinguishing agent 1211 and ensure the fire extinguishing effectiveness of the fire extinguishing agent.
Based on the same invention concept, the invention also provides a filling method of the fire extinguishing agent automatic filling system with the double-filling and double-control function, which comprises the following steps:
1) Thoroughly removing the moist gas in the fire extinguishing bottle by using the fire extinguishing bottle moisture absorption auxiliary gas filling pipeline and the fire extinguishing bottle moisture absorption auxiliary gas discharging pipeline, and preparing for filling a fire extinguishing agent;
2) Filling fire extinguishing agent into the fire extinguishing bottle by using a fire extinguishing agent filling pipeline, automatically weighing the filling weight of the fire extinguishing agent in the process, and automatically blocking the fire extinguishing agent filling pipeline by using a measurement and control system when the filling weight of the fire extinguishing agent reaches a set weight, so that the filling process is finished;
3) Automatically opening a residual fire extinguishing agent backfilling pipeline by using a measurement and control system to backfill the residual fire extinguishing agent in the fire extinguishing agent filling pipeline into a fire extinguishing agent storage tank;
4) The auxiliary gas filling pipeline is automatically opened by the measurement and control system to enable the auxiliary gas filling pipeline to fill auxiliary gas into the fire extinguishing bottle, in the process, the second pressure sensor is used for detecting the pressure in the fire extinguishing bottle, when the pressure in the fire extinguishing bottle reaches a rated value, the measurement and control system automatically blocks the auxiliary gas filling pipeline, the fire extinguishing bottle is closed, the switch is arranged on the fire extinguishing bottle, the fire extinguishing bottle is dismantled, and the filling of the fire extinguishing bottle is finished.
The invention relates to a filling system and a method for filling two media (double filling) of difluoro-chloro-bromo-methane (1211) and nitrogen serving as fire extinguishing agents into the same fire extinguishing bottle, which can control the filling weight of the fire extinguishing agents and the filling pressure (double control) in the fire extinguishing bottle.
The invention adopts the auxiliary gas filling pipeline, the fire extinguishing agent filling pipeline and the residual fire extinguishing agent refilling pipeline which are compatible with high pressure, medium pressure and low pressure, and is matched with measures such as pressure detection, weighing detection, pressure on-off loop and the like, so that the full-process filling operation such as double filling and double control, quantitative constant pressure and the like can be completed by connecting the fire extinguishing bottle once, the positive effect is played for improving the safety and the accuracy of fire extinguishing agent filling equipment and improving the operation efficiency, the residual fire extinguishing agent in the pipeline can be refilled into the fire extinguishing agent storage tank, and the blockage of the fire extinguishing agent filling pipeline due to the solid state of the residual fire extinguishing agent is avoided.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic view of a conventional fire extinguishing agent charging device.
Fig. 2 is a schematic diagram of the fire suppressant filling system of the present invention.
In fig. 1: 1. the fire extinguishing system comprises a nitrogen cylinder, a 2 dehydrated carbon dioxide cylinder, a 3-two-position three-way electromagnetic valve, a 4 gas filter, a 5-gas source pressure transmitter, a 6-gas source pressure gauge, 7, 11, 12, 17, 20, 23, 26, 31, 32, 36-stop valve, 8-low pressure reducing valve, 9-low pressure safety valve, 10-low pressure gauge, 13, 21, 24, 33-two-position two-way electromagnetic valve, 14-low pressure transmitter, 16-fire extinguishing agent storage tank, 19-fire extinguishing bottle, 22, 28-check valve, 25-booster pump, 29-high pressure safety valve, 30-high pressure gauge, 34-heat exchanger, 35-high pressure transmitter;
in fig. 2: 1.1-1.6 of two-position two-way electromagnetic valve, 2.1-2.2 of gas drier, 3.1 of nitrogen cylinder, 4.1-4.3 of pressure reducing valve, 5.1-5.3 of silencer, 6.1 switch, 7.1-7.4 of pressure sensor, 8.1 of fire extinguishing agent storage tank, 9.1 of booster, 10.1-10.2 of one-way valve, 11.1 of quick connector, 12.1 of fire extinguishing bottle, 13.1 of overflow valve, 14.1-14.2 of three-way connector, 15.1-15.2 of four-way connector.
Detailed Description
The invention is further described below with reference to specific preferred embodiments, without thereby limiting the scope of protection of the invention.
For convenience of description, the relative positional relationship of the components, such as: the descriptions of the upper, lower, left, right, etc. are described with reference to the layout directions of the drawings in the specification, and do not limit the structure of the present patent.
As shown in fig. 2, the automatic fire extinguishing agent filling system with dual-filling and dual-control functions of the present invention comprises a fire extinguishing agent (1211) filling pipeline, an auxiliary gas (nitrogen) filling pipeline, a fire extinguishing bottle moisture absorption and filling auxiliary gas pipeline and a fire extinguishing bottle moisture absorption and discharge auxiliary gas pipeline for discharging moisture in the fire extinguishing bottle, a residual fire extinguishing agent refilling pipeline for refilling residual fire extinguishing agent in the fire extinguishing agent filling pipeline to the fire extinguishing bottle, and a measurement and control system. The fire extinguishing agent filling pipeline comprises a nitrogen cylinder 3.1, a first gas dryer 2.1, a pressure reducing valve 4.1, a pressure reducing valve 4.2, an electromagnetic valve 1.2, a fire extinguishing agent storage tank 8.1, a second gas dryer 2.2, an electromagnetic valve 1.3 and a fire extinguishing bottle 12.1 which are connected in sequence. The auxiliary gas filling pipeline is used for filling nitrogen with rated pressure into the fire extinguishing bottle 12.1, and comprises a nitrogen bottle 3.1, a first gas dryer 2.1, an electromagnetic valve 1.1, a supercharger 9.1, a pressure reducing valve 4.3, an electromagnetic valve 1.5, a one-way valve 10.2, a second pressure sensor 7.4 and the fire extinguishing bottle 12.1 which are connected in sequence, and a safety valve 13.1 and a silencer 5.3 are arranged at an input port of the fire extinguishing bottle 12.1. The fire extinguishing bottle moisture absorption and auxiliary gas filling pipeline comprises a nitrogen bottle 3.1, a first gas dryer 2.1, a pressure reducing valve 4.1, a pressure reducing valve 4.2, an electromagnetic valve 1.4, a one-way valve 10.1 and a fire extinguishing bottle 12.1 which are connected in sequence, and the front end of the electromagnetic valve 1.4 is provided with a pressure sensor 7.3. The fire-extinguishing bottle moisture absorption and discharge auxiliary gas pipeline comprises a fire-extinguishing bottle 12.1, an electromagnetic valve 1.6 and a silencer 5.2 which are connected in sequence. The residual fire extinguishing agent backfill pipeline comprises a nitrogen cylinder 3.1, a first gas dryer 2.1, a pressure reducing valve 4.1, a pressure reducing valve 4.2, an electromagnetic valve 1.4, a one-way valve 10.1, an electromagnetic valve 1.3, a second gas dryer 2.2, a fire extinguishing cylinder 12.1 and the like which are connected in sequence. The measurement and control system is used for controlling the pressure of the filling system and the weight of the fire extinguishing agent, comprises a PLC, a second pressure sensor 7.4, a weighing sensor (in the embodiment, an electronic weighing instrument) and the like, controls the working state of related elements, and performs closed-loop double control on the filling pressure and the filling weight.
The filling principle of the automatic fire extinguishing agent filling system with double filling and double control functions according to the present invention will be described with reference to fig. 2.
1. System and method for filling fire extinguishing agent 1211
1.1. Preparation process
In the system shown in fig. 2, before filling the fire extinguishing agent into the fire extinguishing bottle 12.1, it is necessary to perform a preliminary filling step of removing the moist gas in the fire extinguishing bottle 12.1 by using dry nitrogen gas 3 to 5 times.
The process is divided into two procedures:
step one, the 12.1 of the fire extinguishing bottle is filled with nitrogen gas after absorbing moisture
A switch of the nitrogen cylinder 3.1 is opened, and high-pressure nitrogen in the nitrogen cylinder 3.1 is filled into the fire extinguishing bottle 12 through a first gas dryer 2.1, a pressure reducing valve 4.1-4.2, an electromagnetic valve 1.4 and a one-way valve 10.1 in sequence. In the process, the pressure in the nitrogen cylinder is reduced to 1MPa from 12-12.5 MPa by the pressure reducing valve 4.1, and then is further reduced to 0.5MPa by the pressure reducing valve 4.2, the electromagnetic valve 1.4 is powered on, and the rest electromagnetic valves are in a power-off closing state.
Step two, 12.1 of the fire extinguishing bottle absorbs moisture and discharges nitrogen
In the first step, the electromagnetic valve 1.4 is powered off and is closed normally; the solenoid valve 1.6 is electrically connected. And the rest electromagnetic valves are in a power-off closing state. The low-pressure nitrogen in the fire extinguishing bottle 12.1 is exhausted through the quick-change connector 11.1, the electromagnetic valve 1.6 and the silencer 5.2.
The process is automatically controlled by a measurement and control system for 3-5 times, and the moist gas in the fire extinguishing bottle 12.1 can be completely removed to prepare for filling the fire extinguishing agent 1211.
1.2. The process of filling the fire suppressant 1211 is divided into two steps:
first, the fire extinguishing bottle 12.1 is filled with a fire extinguishing agent 1211
Disconnecting the quick connector 11; the electromagnetic valves 1.2 and 1.3 are powered on, the other electromagnetic valves are powered off, and the electromagnetic valves are normally closed. High-pressure nitrogen in a nitrogen cylinder 3.1 enters a 1211 fire extinguishing agent storage tank 8.1 through a first gas dryer 2.1, a two-stage pressure reducing valve 4.1-4.2, an electromagnetic valve 1.2, a pressure sensor 7.1 and a T connector, pushes the fire extinguishing agent in the fire extinguishing agent storage tank 8.1 out through a P connector, and fills the fire extinguishing bottle 12.1 through a second gas dryer 2.2 and an electromagnetic valve 1.3.
In this process, the fire bottle 12.1 is placed on an electronic weighing scale (weighing cell), and the filling weight of the fire extinguishing agent is continuously measured during the filling process. When the set weight is reached, the electromagnetic valves 1.2 and 1.3 are controlled by the measurement and control system to be powered off, the normal state is recovered (the power is lost and the valve is closed), and the process of filling 1211 the fire extinguishing agent is finished.
Step two, the residual fire-extinguishing agent 1211 in the filling pipeline is backfilled
And opening a nitrogen cylinder 3.1, and filling the high-pressure nitrogen in the cylinder into a fire extinguishing agent storage tank 8.1 from a port P after sequentially passing through a first gas dryer 2.1, a pressure reducing valve 4.1-4.2, an electromagnetic valve 1.4 (connected with electricity), a one-way valve 10.1, an electromagnetic valve 1.3 (connected with electricity), a pressure sensor 7.2 and a second gas dryer 2.2. In the process, the nitrogen pressure backfills 1211 fire extinguishing agent remained in the pipeline between the downstream of the one-way valve 10.1 and the P port of the fire extinguishing agent storage tank 8.1 to the fire extinguishing agent storage tank 8.1, so that the effective solidification of the fire extinguishing agent is prevented from blocking the pipeline, and the pipeline is ready for the next filling.
2. Nitrogen filling system and method
The fire extinguishing bottle 12.1 is filled with nitrogen gas with rated pressure, and the nitrogen gas is filled in the loop from the nitrogen gas bottle 3.1. The process is divided into two working conditions:
working condition one, directly filling nitrogen
When the nitrogen gas cylinder 3.1 is full of 12-12.5 MPa, the fire extinguishing bottle 12.1 can be directly filled to the rated pressure P3 without pressurization. The process is as follows:
and opening a switch of a nitrogen cylinder 3.1, and sequentially filling the high-pressure nitrogen into a fire extinguishing bottle 12.1 through a first gas dryer 2.1, an electromagnetic valve 1.1, a supercharger 9.1, a pressure reducing valve 4.3, an electromagnetic valve 1.5, a one-way valve 10.2, a pressure sensor 7.4 and a quick connector 11. In the process, the electromagnetic valves 1.1 and 1.5 are powered on, and the other electromagnetic valves are powered off and closed; the pressure reducing valve 4.3 is set to be the rated pressure P3 of the fire extinguishing bottle 12.1, the set value P4 of the overflow valve 13.1 is slightly higher than the pressure P3 by 0.5MPa, the normal state is closed, and the pressure is opened when abnormally rising, so that the safety function is realized; the input pressure value of the supercharger 9.1 is higher than or equal to the rated pressure of the output thereof, so that the input end and the output end of the supercharger 9.1 are directly communicated without supercharging. When the pressure of the fire extinguishing bottle 12.1 reaches a rated value, the measurement and control system acquires a signal of the pressure sensor 7.4 and sends instructions to the electromagnetic valves 1.1 and 1.5 to close the electromagnetic valves when power is lost. Closing a switch of the fire extinguishing bottle 12.1 to electrify the electromagnetic valve 1.6, and discharging residual nitrogen pressure in the filling pipeline through a silencer 5.2; and (5) removing the connection between the fire extinguishing bottle 12.1 and the filling pipeline, and finishing nitrogen filling.
The pressure booster 9.1 in this embodiment is the finished component that controls the output pressure to a higher value. When the input pressure value of the supercharger 9.1 is lower than the output rated pressure, the supercharger 9.1 continuously reverses and supercharges to enable the supercharger to output a high-pressure rated value; when the input pressure value is higher than or equal to the rated output pressure, the input end and the output end of the supercharger 9.1 are directly communicated without supercharging. The pressure booster 9.1 in this embodiment is typical of the type of finished part used in pneumatic systems. In the embodiment, a double-acting gas-driving type supercharger of MAXIMATOR company is selected, the model of the supercharger is DLE30-2, and a pressure sensor and an electromagnetic valve are arranged in the input end of the supercharger.
Working condition two, pressurizing and filling nitrogen
When the pressure in the nitrogen cylinder 3.1 is reduced and is less than the rated pressure P3 of the fire extinguishing cylinder 12.1 after being filled for a plurality of times, the nitrogen is pressurized to the rated pressure and then is filled. The process is as follows:
a switch of a nitrogen cylinder 3.1 is opened, high-pressure nitrogen sequentially passes through a first gas dryer 2.1 and an electromagnetic valve 1.1 to enter a booster 9.1, at the moment, a built-in pressure sensor at the input end of the booster 9.1 detects that the pressure of the nitrogen cylinder 3.1 is low and sends related information to a measurement and control system, the measurement and control system sends an instruction, the built-in electromagnetic valve of the booster 9.1 is started to enable the booster 9.1 to start circulating reversing pressurization, and the pressurized nitrogen is filled into a fire extinguishing bottle 12.1 through a pressure reducing valve 4.3, an electromagnetic valve 1.5, a one-way valve 10.2, a pressure sensor 7.4 and a quick connector 11.1. When the pressure value of the gas in the fire extinguishing bottle 12.1 reaches the rated pressure P3, the measurement and control system acquires the signal of the pressure sensor 7.4 and simultaneously gives an instruction to the built-in electromagnetic valve of the supercharger 9.1, the electromagnetic valves 1.1 and 1.5 to shut down the supercharger when power is lost, and stop the supercharging and nitrogen filling processes; closing a switch of the fire extinguishing bottle 12.1 to electrify the electromagnetic valve 1.6, and discharging residual nitrogen pressure in the filling pipeline through a silencer 5.2; and (5) removing the connection between the fire extinguishing bottle 12.1 and the filling pipeline, and finishing nitrogen filling.
The on-off state of each electromagnetic valve in the filling process is detailed in table 1.
TABLE 1 filling Process operating State List for each solenoid valve
Note: + indicates the electromagnet is energized and-indicates the electromagnet is de-energized.
The double-charging (two media: 1211 and nitrogen) double-control (control charging weight and pressure) fire extinguishing agent charging system has the functions of charging 1211 fire extinguishing agent into a fire extinguishing bottle 12.1, automatically controlling charging weight, charging nitrogen media and automatically controlling charging pressure. The details are as follows:
the double-medium source and low-pressure system is used for providing 1211 source and nitrogen source, and reducing the pressure of the nitrogen to be led into 1211 the 1211 fire extinguishing agent storage tank 8.1 to be used as charging power of 1211 fire extinguishing agent; the other path is used as a backfill system and provides a low-pressure medium for the moisture absorption function.
The middle-high pressure nitrogen filling system is used for collecting a pressure signal of a nitrogen cylinder 3.1, and a measurement and control system automatically selects a high-pressure filling mode or a middle-low pressure boosting filling mode, and is a core component part for filling nitrogen pressure.
The backfill system uses low-pressure nitrogen to fill the 1211 fire extinguishing agent remained in the filling pipeline back to the fire extinguishing agent storage tank 8.1, so as to avoid aging solidification.
The measurement and control system takes a PLC as a core element, collects 1211 fire extinguishing agent filling weight and nitrogen filling pressure signals in real time, controls the work of relevant electromagnetic valves and superchargers, and realizes automatic control of the filling process according to program logic.
The four subsystems are organically integrated according to the filling logic, the dual-filling dual-control function is realized by combining the four subsystems together.
The invention focuses on the explanation of the composition and the principle of a hydraulic system and a pneumatic system, namely the double-medium source and low-pressure system, the medium-high pressure nitrogen filling system and the backfilling system. The function of the measurement and control system is to collect relevant electric signals and control the action of hydraulic and pneumatic elements, and is not a key component of the invention. Therefore, the composition principle (fig. 2) of the three subsystems is described in detail, and the measurement and control system is only briefly described in text.
In order to realize the filling of the fire extinguishing bottle with the double media (1211, nitrogen) with rated weight and pressure, the pressure and direction of the gas source are controlled, and the filling function and the auxiliary function of the two media are matched, which is one of the core technologies of the filling system.
The details are as follows:
as shown in fig. 2, the dual-medium source and low-pressure system is composed of a 1211 pipeline and a nitrogen pipeline according to filling logic, wherein a nitrogen bottle 3.1 stores high-pressure nitrogen and is provided with a switch and a connector 1 respectively. The nitrogen belongs to a consumable, and when the nitrogen is used up, the cylinder is filled with fresh gas, the volume of the standard gas cylinder is 40L, and the rated pressure of the full-cylinder nitrogen is 12-12.5 MPa. The outlet of the nitrogen cylinder 3.1 passes through a first gas dryer 2.1, moisture and impurities in the nitrogen are filtered, the nitrogen is divided into two paths through a three-way joint 14.2, one path of the nitrogen is used for reducing the high-pressure nitrogen in the nitrogen cylinder 3.1 to 0.5MPa through pressure reducing valves 4.1 and 4.2, the nitrogen is divided into two paths through a four-way joint 15.1, and the other path of the nitrogen enters a backfill system through an electromagnetic valve 1.4 (electrified connection) and a one-way valve 10.1. The other branch of the four-way joint 15.1 passes through an electromagnetic valve 1.2 and a pressure sensor 7.1 to a T port of a fire extinguishing agent storage tank 8.1, the tank stores 1211 fire extinguishing agent, and the tank is provided with a liquid filling/discharging switch and 1 pair of interfaces respectively, 1211 is in liquid state under pressure filling and belongs to consumables, when a bottle is full, pressure is reduced when pressure is applied, and when the bottle is used up, the tank is replaced and full. The branch is used for filling low-pressure nitrogen gas of 0.6-0.8 MPa into a fire extinguishing agent storage tank 8.1 and pushing 1211 fire extinguishing agent to be extruded from a P port, belonging to the 1211 filling process, and the specific filling method is detailed above.
In FIG. 2, the rated pressure of the nitrogen cylinder 3.1 is reduced from 12 to 12.5MPa to 1MPa (P1) by the primary pressure reducing valve 4.1, and then the rated pressure of the nitrogen cylinder is reduced to 0.5MPa (P2) by the secondary pressure reducing valve 4.2. Two pressure reducing valves are required to be connected in series, and the pressure reduction range from 12-12.5 MPa to 0.5MPa cannot be realized by one-stage pressure reduction.
In fig. 2, the switch 6.1 is connected in series with the silencer 5.1, and has two functions: the first step is to release the residual air pressure in the pipeline and reduce the noise generated during air discharge, and the recovery step is performed after 1211 is filled. And the other is to provide necessary preparation for the backfill function of residual media in the 1211 filling pipeline, otherwise, if the residual nitrogen pressure exists in the fire extinguishing agent storage tank 8.1, the backfill system cannot realize the backfill function.
In order to fill nitrogen with the rated pressure of 9-11 MPa into the fire extinguishing bottle, a set of corresponding nitrogen pressure control system is required to be configured, and the nitrogen pressure control system can meet the rated pressure filling function no matter the pressure of the nitrogen bottle is 3.1, which is also the core technology of the filling system. The details are as follows:
as shown in fig. 2, an outlet of a nitrogen cylinder 3.1 is branched through a first gas dryer 2.1 and a three-way joint 14.2, one path of the nitrogen cylinder is a medium-high pressure nitrogen charging system composed of an electromagnetic valve 1.1, a low-pressure cavity of a supercharger 9.1, a pressure reducing valve 4.3, an electromagnetic valve 1.5, a one-way valve 10.2 and a pressure sensor 7.4, and the nitrogen charging system is butted with a quick joint 11.1, a four-way joint 15.2 and a fire extinguishing bottle 12.1 of a backfill system.
A pressure sensor is arranged in the supercharger 9.1, the pressure of inlet nitrogen is measured in real time, a measurement and control system collects and compares pressure signals, subsequent work is automatically executed by program judgment, and the direct filling mode and the pressurization filling mode are adopted.
The pressure reducing valve 4.3 is set to have the rated pressure of the fire extinguishing bottle 12.1 as P3, the set value P4 of the overflow valve 13.1 is 0.5MPa higher than P3, the overflow valve 13.1 is in a closed state in a normal state, and when the filling pressure is abnormally increased, the overflow valve 13.1 is opened to play a role in protection. The electromagnetic valve 1.6 is connected with the silencer 5.2 in series, and has two functions: the first is to eliminate the residual nitrogen pressure in the filling pipeline and reduce the exhaust noise, and the second is to cooperate with the double medium source and the low pressure system, and to use the dry nitrogen to eliminate the damp gas in the fire extinguishing bottle 12.1 as the preparation process of filling.
The supercharger 9.1 is in a 'gas drive gas' type bidirectional reciprocating supercharging mode, namely: the driving end is low-pressure gas, and an inlet and an outlet are connected with P, T; the driven medium comes from a nitrogen cylinder 3.1. The pressure sensor and the reversing valve are arranged, and the pressure can be automatically increased to a set value; the pressure boosting device is provided with a bridge type loop consisting of four one-way valves, so that the pressure boosting can be realized in the two-way reciprocating motion process of a piston, and the isolation of a high-pressure output end and a low-pressure input end can also be realized.
In order to avoid the pipeline blockage caused by the aging curing of 1211 residues in the filling pipeline, the backfilling pipeline is designed, and the pipeline can be quickly dredged. The details are as follows:
as shown in figure 2, the backfill system is formed by connecting a one-way valve 10.1 downstream of the double-medium source and low-pressure system, a four-way joint 15.2, a solenoid valve 1.3, a pressure sensor 7.2, a second gas drier 2.2 and a P port switch of a fire extinguishing agent storage tank 8.
During backfilling, the nitrogen pressure of the nitrogen bottle 3.1 backfills the residual fire extinguishing agent in the pipeline between the downstream of the one-way valve 10.1 and the 1211 fire extinguishing agent storage tank 8.1 to the 1211 fire extinguishing agent storage tank 8, so that the pipeline is prevented from being blocked by aging solidification, and preparation is made for next filling.
The quick coupling 11.1 is directly connected to the four-way coupling 15.2 in order to avoid unnecessary fire extinguishing agent filling the line length (referring to the line between the quick coupling 11.1 and the three-way coupling 14.1), and in the process the quick coupling 11.1 is disconnected. When the fire bottle 12.1 is filled with nitrogen gas pressure or moisture inside the fire bottle 12.1 is removed by low-pressure nitrogen gas, the quick coupling 11.1 is in the on state.
The length of the line between the four-way connection 15.2 and the filling line of the fire extinguisher bottle 12.1 should be as short as possible to reduce the residual 1211 of the fire extinguishing agent.
Aiming at the corrosiveness of the 1211 fire extinguishing agent, in order to avoid the corrosive failure of the filling pipeline, anticorrosion measures are taken in the aspect of system composition. The details are as follows:
as shown in fig. 2, the outlet P of the fire extinguishing agent storage tank 8.1 passes through a loop formed by a second gas dryer 2.2, a pressure sensor 7.2, an electromagnetic valve 1.3, a one-way valve 10.1, a quick coupling 11.1 and associated pipelines and couplings, and the pipelines, the couplings, the sensor body and the valve body are all made of stainless steel 304 materials, so that the corrosive fault of the 1211 fire extinguishing agent is avoided.
Comparing the two fire suppressant filling systems shown in fig. 1 and 2, it can be seen that the two systems differ in the following respects:
firstly, the high/low pressure nitrogen filling and switching modes are different
The nitrogen filling system shown in fig. 1 is divided into two working conditions of high-pressure filling (through a medium-pressure pipeline) and low-pressure pressurization filling (through a high-pressure pipeline), two filling pipelines are provided, and manual switching is needed between the two filling pipelines; the high-pressure filling and the low-pressure pressurization filling of the nitrogen filling system shown in FIG. 2 share one filling pipeline, and the continuous filling is automatically detected; the two principles and compositions are different.
In fig. 1, a filling pipeline between a nitrogen cylinder 1 and a fire extinguishing bottle 19 (station 2) through a filler nozzle 37 is divided into high-pressure filling (through a switch 20 or an electromagnetic valve 21 and a medium-pressure pipeline) and medium-low pressure boosting filling (through a switch 23 or an electromagnetic valve 24 and the high-pressure pipeline), the pressure value of the nitrogen cylinder 1 needs to be identified, and the related electromagnetic valve needs to be correspondingly switched on/off to reach the rated filling value of the fire extinguishing bottle, so that the efficiency is low.
In fig. 2, only one filling pipeline is arranged between a nitrogen cylinder 3.1 and a fire extinguishing bottle 12.1, a first pressure sensor (not shown) arranged in a supercharger 9.1 detects the air pressure value of the nitrogen cylinder 3.1, the full cylinder high pressure is directly filled through the supercharger 9.1, the full cylinder high pressure is filled after being supercharged through the supercharger 9.1 at the middle and low pressure, the whole process is the filling process controlled by an automatic identification program, and the efficiency is high.
Secondly, the fire extinguishing bottle and the pipelines of the two filling mediums (1211 and nitrogen) have different connection modes
The fire extinguishing bottle 19 shown in fig. 1 has two filling pipelines with two filling media (1211 and nitrogen), and the fire extinguishing bottle 19 needs to be manually disassembled and assembled twice in the filling process; the two filling mediums (1211, nitrogen) shown in fig. 2 share one filling pipeline, and one-time connection can be completed; the two principles and compositions are different.
In FIG. 1, the fire extinguishing bottle 19 is filled 1211 with the fire extinguishing agent, which is connected to the fire extinguishing agent storage tank 16 through the nozzle 18, the switch 17 and the nozzle 1211 in this order (station 1); when the nitrogen pressure is filled, the filler neck 18 is disconnected and the fire bottle 19 is connected to the filler neck 37 to the station 2, and the filling from the nitrogen bottle 1 via the control circuit is completed. In short, the bottle 19 is filled 1211 with both the extinguishing medium and the nitrogen gas, and it is connected twice, which is inefficient.
In fig. 2, the two pipelines filled with the medium 1211 and the nitrogen are organically fused together according to the filling principle, only one pipeline is connected with the fire extinguishing bottle 12.1, and the operations of completing the filling weight of the 1211 fire extinguishing agent and the filling pressure of the nitrogen only need to be connected once, so that double filling and double control can be achieved, and the efficiency is high.
Thirdly, whether the refilling function of the filling pipeline of the fire extinguishing agent 1211 is different
The fire-extinguishing agent 1211 solidifies in the closed pipeline with time, and needs to be dredged in time. The filling system can be divided into a backfilling function and a non-backfilling function according to the function of dredging the residual fire-extinguishing agent 1211 in the pipeline.
The pipeline between the fire extinguishing agent storage tank 16 and the fire extinguishing bottle 19 in fig. 1 has no backfill function, and residual fire extinguishing agent is easy to age and solidify to cause blockage. As shown in figure 2, the pipeline composed of a nitrogen cylinder 3.1, two-stage pressure reducing valves 4.1 and 4.2 to a one-way valve 10.1 can charge residual media in the pipeline between the downstream of a four-way joint 15.2 and a P port of a 1211 fire extinguishing agent storage tank 8.1 back to the 1211 fire extinguishing agent storage tank 8.1 to form a backfill system for dredging.
Fourthly, the treatment modes of the pressure and the weight overcharge are different
The control system of the two filling media (1211, nitrogen) shown in FIG. 1 needs manual identification and filling or pressure relief operation; the control system shown in fig. 2 can automatically complete the filling and detection of two filling media (1211 and nitrogen), and is controlled in a closed loop mode. The control principles of the two are different.
As shown in fig. 1, when filling 1211 or nitrogen gas into a fire suppression bottle 19, the filling control system does not associate the weighing system/nitrogen gas pressure measurement system of the fire suppressant 1211 with the operation of the associated valve, and requires manual iterations to complete the filling operation at the rated pressure and weight. The method does not meet the requirements of automatic, accurate and efficient mass production filling operation.
The control system shown in fig. 2 performs closed-loop control of the weighing system/nitrogen pressure measuring system of the fire extinguishing agent 1211 and the actions of the related filling valves, and the control system automatically completes the filling operation of rated pressure and weight without manual intervention in the process. Has the characteristics of automation, accuracy and high efficiency, and is suitable for small batches and mass production.
Fifthly, the fire extinguishing agent 1211 filling pipelines have different treatment modes on the corrosion resistance
In the figure 1, the filling pipeline from the fire extinguishing agent storage tank 16 to the fire extinguishing bottle 19 does not consider the corrosive action of the fire extinguishing agent 1211 on carbon steel materials, so that the functional failure of a filling system is easily caused, the operation safety events of environment pollution and human body injury caused by the fire extinguishing agent can be caused, and multiple hidden dangers exist.
As shown in figure 2, the filling pipeline, elements, joints and the like from the fire extinguishing agent storage tank 8.1 to the fire extinguishing bottle 12.1 of 1211 take the corrosive effect of the fire extinguishing agent 1211 on carbon steel materials into consideration, and the filling pipeline is made of 304 stainless steel, so that the filling pipeline can be prevented from being corroded after long-term use, the normal performance of the filling function of the fire extinguishing agent is ensured, and the potential safety hazard caused by the leakage of the fire extinguishing agent 1211 is eliminated.
The above description is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and those skilled in the art can make many possible variations and modifications to the technical solution of the present invention or modify equivalent embodiments using the technical content disclosed above without departing from the technical solution of the present invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.
Claims (7)
1. An automatic fire extinguishing agent filling system with double filling and double control functions comprises a fire extinguishing agent filling pipeline, an auxiliary gas filling pipeline and a measurement and control system, wherein a fire extinguishing agent storage tank is arranged on the fire extinguishing agent filling pipeline, the auxiliary gas filling pipeline comprises two working conditions of high-pressure filling and low-pressure filling, the measurement and control system comprises a controller and is characterized in that,
the fire extinguishing bottle moisture absorption and filling auxiliary gas pipeline and the fire extinguishing bottle moisture absorption and discharge auxiliary gas pipeline are used for removing moisture gas in the fire extinguishing bottle, and the residual fire extinguishing agent refilling pipeline is used for refilling residual fire extinguishing agent in the fire extinguishing agent filling pipeline to the fire extinguishing bottle;
the auxiliary gas filling pipeline has two working conditions of high-pressure filling and low-pressure filling, and a filling pipeline is shared by a supercharger with a straight-through branch and a supercharging branch, when the input pressure value of the supercharger is lower than the output rated pressure, the supercharger outputs a high-pressure rated value after being supercharged by the supercharging branch, and when the input pressure value of the supercharger is higher than or equal to the output rated pressure, the input end and the output end of the supercharger are directly communicated without supercharging by the straight-through branch;
the output end of the fire extinguishing agent filling pipeline, the output end of the auxiliary gas filling pipeline and the output end of the fire extinguishing bottle moisture absorption filling auxiliary gas pipeline are connected in parallel with the input port of the fire extinguishing bottle, the output end of the residual fire extinguishing agent refilling pipeline is connected with the output end of the fire extinguishing agent storage tank, the fire extinguishing agent filling pipeline, the auxiliary gas filling pipeline, the front ends of the fire extinguishing bottle moisture absorption filling auxiliary gas pipeline and the residual fire extinguishing agent refilling pipeline are respectively connected with an auxiliary gas source, the front end of the fire extinguishing bottle moisture absorption and discharge auxiliary gas pipeline is connected with the fire extinguishing bottle, and the output end of the fire extinguishing bottle moisture absorption and discharge auxiliary gas pipeline is provided with a silencer.
2. The automatic fire extinguishing agent filling system with the dual-filling and dual-control function according to claim 1, wherein the auxiliary gas filling pipeline is provided with the supercharger with the straight-through branch and the pressurization branch, the input end of the supercharger is provided with a first pressure sensor for detecting the pressure value of the auxiliary gas, the output end of the supercharger is provided with a second pressure sensor for detecting the pressure value of the fire extinguishing bottle, the fire extinguishing bottle is arranged on the weighing sensor, the first pressure sensor, the second pressure sensor and the weighing sensor are respectively connected to the input end of the controller, and the electromagnetic valves on the fire extinguishing agent filling pipeline and the auxiliary gas filling pipeline are respectively connected to the output end of the controller.
3. The automatic fire extinguishing agent filling system with dual-filling and dual-control functions according to claim 1, wherein the residual fire extinguishing agent backfilling pipeline comprises an auxiliary gas supply branch and a backfilling branch which are connected with each other.
4. The automatic fire extinguishing agent filling system with double filling and double controlling functions as claimed in claim 3, wherein the backfill branch is simultaneously used as a back end pipeline of the fire extinguishing agent filling pipeline.
5. The automatic fire extinguishing agent filling system with double-filling and double-control function according to claim 1, wherein the output end of the auxiliary gas source is provided with a first gas drier.
6. The automatic fire extinguishing agent filling system with double-filling and double-controlling function according to claim 1, wherein the P port of the fire extinguishing agent storage tank is provided with a second gas dryer.
7. A method for filling the fire extinguishing agent automatic filling system with the double filling and double control function according to claim 2, which comprises the following steps:
1) Thoroughly removing the moist gas in the fire extinguishing bottle by using the fire extinguishing bottle moisture absorption auxiliary gas filling pipeline and the fire extinguishing bottle moisture absorption auxiliary gas discharging pipeline, and preparing for filling a fire extinguishing agent;
2) Filling fire extinguishing agent into the fire extinguishing bottle by using a fire extinguishing agent filling pipeline, automatically weighing the filling weight of the fire extinguishing agent in the process, and automatically blocking the fire extinguishing agent filling pipeline by using a measurement and control system when the filling weight of the fire extinguishing agent reaches a set weight, so that the filling process is finished;
3) Automatically opening the residual fire extinguishing agent backfilling pipeline by using the measurement and control system to backfill the residual fire extinguishing agent in the fire extinguishing agent filling pipeline into the fire extinguishing agent storage tank;
4) The auxiliary gas filling pipeline is automatically opened by the measurement and control system to enable the auxiliary gas filling pipeline to fill auxiliary gas into the fire extinguishing bottle, in the process, the second pressure sensor is used for detecting the pressure in the fire extinguishing bottle, when the pressure in the fire extinguishing bottle reaches a rated value, the measurement and control system automatically blocks the auxiliary gas filling pipeline, the fire extinguishing bottle is closed, the switch is arranged on the fire extinguishing bottle, the fire extinguishing bottle is dismantled, and the filling of the fire extinguishing bottle is finished.
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| JP2000180342A (en) * | 1998-12-14 | 2000-06-30 | L'air Liquide | Method for evaluating gas container and container valve |
| KR100632702B1 (en) * | 2003-05-12 | 2006-10-11 | 장영준 | Manufacturing equipment mixed-refrigerant continually and the manufacturing method |
| CN104689499B (en) * | 2015-02-13 | 2016-04-20 | 中国人民解放军海军航空工程学院青岛校区 | Aircraft fire extinguishing system attachment detects and device for filling |
| CN204534105U (en) * | 2015-03-10 | 2015-08-05 | 杭州新世纪混合气体有限公司 | A kind of carbon dioxide fills reflux |
| CN207187450U (en) * | 2017-06-30 | 2018-04-06 | 天津市热力有限公司 | A kind of coal dust conveying protection automatic recycling system of nitrogen |
| CN110057431B (en) * | 2018-01-19 | 2020-12-08 | 辽宁美托科技股份有限公司 | Mixed gas filling device with overturning platform and method |
| CN207962090U (en) * | 2018-01-31 | 2018-10-12 | 上海汇友精密化学品有限公司 | A kind of charging device of gas extinguishing agent |
| CN108168211A (en) * | 2018-02-01 | 2018-06-15 | 青岛绿环工业设备有限公司 | A kind of halon fire agent recovery system |
| CN109185692B (en) * | 2018-09-26 | 2024-02-09 | 中国科学技术大学 | Fire extinguishing agent filling equipment |
| CN109764237B (en) * | 2018-12-19 | 2021-05-11 | 河南平高电气股份有限公司 | Gas recovery aerating device |
| CN110207004A (en) * | 2019-07-02 | 2019-09-06 | 上海悟道机电设备有限公司 | A kind of quick high-purity filling equipment of the cooling gas cylinder of bullet |
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