CN102419240A - Method and device for indirectly measuring leaking amount of fire extinguishing agent in low-pressure carbon dioxide fire extinguishing system - Google Patents
Method and device for indirectly measuring leaking amount of fire extinguishing agent in low-pressure carbon dioxide fire extinguishing system Download PDFInfo
- Publication number
- CN102419240A CN102419240A CN2011102396885A CN201110239688A CN102419240A CN 102419240 A CN102419240 A CN 102419240A CN 2011102396885 A CN2011102396885 A CN 2011102396885A CN 201110239688 A CN201110239688 A CN 201110239688A CN 102419240 A CN102419240 A CN 102419240A
- Authority
- CN
- China
- Prior art keywords
- fire extinguishing
- carbon dioxide
- collection container
- pressure carbon
- rapid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
The invention relates to a method and a device for indirectly measuring the leaking amount of a fire extinguishing agent in a low-pressure carbon dioxide fire extinguishing system, wherein the method and the device are used for judging the heat preservation and insulation effects in an indirect way. The method is favorable for overcoming the disadvantages of difficulty in hanging and transporting, low measurement precision and the like in the traditional direct weighing method. A collection container which is used for collecting the leaked carbon dioxide fire extinguishing agent and has a sealing performance is connected with a safety valve outlet of the low-pressure carbon dioxide fire extinguishing system; and the masses of the collection container and connection accessories of the collection container before the test and after the test are respectively measured and the difference of the masses of the collection container and the connection accessories of the collection container in two times of weighing is the leaking amount of the fire extinguishing agent in the low-pressure carbon dioxide fire extinguishing system. According to the method and the device provided by the invention, a device and procedures for measuring the leaking amount of the fire extinguishing agent in the low-pressure carbon dioxide fire extinguishing system are simplified, the error of test results is small and the measurement precision is improved. Meanwhile, the installation, detachment and transportation of all the members are convenient, the operation is simple and easy, and the precision of a weighing device is high.
Description
Technical field
The present invention relates to measure the method for low pressure carbon dioxide fire extinguishing systems insulation insulation effect, particularly a kind of method and device of indirect measurement low pressure carbon dioxide fire extinguishing systems fire extinguishing agent leakage rate.
Background technology
Low pressure carbon dioxide fire extinguishing systems is carbon dioxide extinguishing agent to be stored in liquid form have in the storage facility that is incubated heat insulating construction; The temperature maintenance that makes carbon dioxide in the storage facility through refrigeration system is in-20 ℃～-18 ℃ scopes; When breaking out of fire; Fire extinguishing system is discharged into liquid carbon dioxide in the guard plot through nozzle or on the protected object, puts out a fire with enforcement.Fire extinguishing system is in practical engineering application; When causing refrigeration system out of service owing to reasons such as electric power system outage or catastrophic failures; Fire extinguishing system storage facility internal pressure is raise, and when pressure was higher than on the storage facility safety valve setting pressure, safety valve was opened; Fire extinguishing agent leaks, thereby reduces the storage facility internal pressure.
Low pressure carbon dioxide fire extinguishing systems fire extinguishing agent leakage rate is the important indicator of the insulation insulation effect of examination storage facility.At present, for the measurement of carbon dioxide extinguishing agent leakage rate, adopt direct weight method, promptly before and after the insulation thermal insulative test, measure the quality of the entire system that fire extinguishing agent is housed respectively, the difference of twice measurement quality is the fire extinguishing agent leakage rate.Use this method to measure, mainly have the problem of following aspect: 1, the low pressure carbon dioxide fire extinguishing systems quality is bigger, lifting, hard transportation; 2, adopt the instrument of weighing of wide range, measuring accuracy is not high; 3, when reaching maximum working pressure (MOP) in the low pressure carbon dioxide fire extinguishing systems storage facility, storage tank belongs to two types of pressure vessels, has certain risk in the transportation.
Summary of the invention
In order to overcome the existing deficiency of measuring low pressure carbon dioxide fire extinguishing systems fire extinguishing agent leakage rate method, the present invention adopts indirect measuring mode, and a kind of method and device of indirect measurement low pressure carbon dioxide fire extinguishing systems fire extinguishing agent leakage rate newly is provided especially.Because carbon dioxide extinguishing agent all leaks from safety valve; Therefore; It is relatively large to connect a volume in low pressure carbon dioxide fire extinguishing systems safety valve exit, and the collection container with good seal performance, collects the carbon dioxide extinguishing agent that leaks; With the quality of testing back collection container and coupling thereof, the difference of twice quality of weighing is low pressure carbon dioxide fire extinguishing systems fire extinguishing agent leakage rate before the difference experiment with measuring.
The technical scheme that the present invention takes is: a kind of method of indirect measurement low pressure carbon dioxide fire extinguishing systems fire extinguishing agent leakage rate; It is characterized in that: connect the collection container that is used to collect the carbon dioxide extinguishing agent of leakage and has sealing property in low pressure carbon dioxide fire extinguishing systems safety valve exit; With the quality of testing back collection container and coupling thereof, the difference of the quality of twice weigh collection container and coupling thereof is low pressure carbon dioxide fire extinguishing systems fire extinguishing agent leakage rate before the difference experiment with measuring.
A kind of device of indirect measurement low pressure carbon dioxide fire extinguishing systems fire extinguishing agent leakage rate; It is characterized in that; Comprise collection container and coupling; The collection container import is connected with the public end of rapid-acting coupling through flange, and flange connections is added with sealing gasket, and the public end of rapid-acting coupling is connected with the low pressure carbon dioxide fire extinguishing systems safety valve through coupling.
The beneficial effect that the present invention produced is: adopt this method, simplified the measurement mechanism and the process of measurement of low pressure carbon dioxide fire extinguishing systems fire extinguishing agent leakage rate, improved measuring accuracy, the test findings error is little.Each parts installation simultaneously, dismounting, convenient transportation, simple to operate easy.
Description of drawings
Fig. 1 is a device catenation principle block diagram of measuring low pressure carbon dioxide fire extinguishing systems fire extinguishing agent leakage rate indirectly.
Fig. 2 is the collection container structural drawing.
Fig. 3 is that the collection container import is connected enlarged drawing with the public end of rapid-acting coupling among Fig. 1.
Fig. 4 is the coupling structural drawing.
Embodiment
Below in conjunction with accompanying drawing the present invention is described further: with reference to Fig. 1, Fig. 2, Fig. 3 and Fig. 4; The device of measuring low pressure carbon dioxide fire extinguishing systems fire extinguishing agent leakage rate indirectly comprises collection container and coupling; Collection container import 1 is connected with the public end 2 of rapid-acting coupling through flange 5; Flange 5 junctions are added with sealing gasket 4, and to guarantee sealing effectiveness, the public end 2 of rapid-acting coupling is connected with the low pressure carbon dioxide fire extinguishing systems safety valve through coupling.
Coupling adopts two ends to have the high pressure rubber hose 7 of joint; High pressure rubber hose 7 one ends are the female end 6 of rapid-acting coupling; Be connected with the public end of rapid-acting coupling 2 straight cuttings in the collection container import 1, the other end is fixed with internal thread ball valve 8, and is threaded with the safety valve exit through internal thread ball valve 8.
Insert and use the offset cam principle, force and insert axle connection and unlatching.What this method adopted is the rapid-acting coupling of both ends open formula, and promptly when the public end 2 of rapid-acting coupling was connected with female end 6 and is unconnected, the pipeline that joint belongs to all was communicated with the smoothness of pipeline during the warranty test.Rapid-acting coupling is a kind of joint that does not need instrument just can realize pipeline connection or disconnection.The flexible pipe that high pressure rubber hose 7 is made up of inner glue layer, braided steel wire enhancement layer, outer glue-line has performances such as high temperature resistant, aging and corrosion-resistant.
Establish an endoporus 10 on the female end 6 of the rapid-acting coupling of high pressure rubber hose 7 one ends, evenly be furnished with eight steel balls 11 on endoporus 10 walls, endoporus 10 outsides are provided with cutting ferrule 9; The public end 2 of the rapid-acting coupling of collection container is a cylinder; Damaged surface is provided with the groove 3 that is connected with the female end 6 of rapid-acting coupling, shifts the cutting ferrule 9 on the female end 6 of rapid-acting coupling onto the end to the right during connection, the more public end of rapid-acting coupling is firmly inserted in the female end of the rapid-acting coupling endoporus 10; Decontrol cutting ferrule 9 then; Cutting ferrule 9 sets back under the effect of spring force, and steel ball 11 is fixed in the groove 3, produces self-locking action; Make the public end 2 of rapid-acting coupling be locked in unlikely coming off in the female end 6 of rapid-acting coupling, thereby realize connecting fast.The female end of rapid-acting coupling simultaneously 6 inside are provided with O RunddichtringO 12, and the female end 6 inner O RunddichtringOs 12 of rapid-acting coupling public end 2 heads and rapid-acting coupling are realized axial seal, thereby realize good sealing.
During disconnection, only need to shift cutting ferrule 9 onto the end to the right, the more public end 2 of rapid-acting coupling is extracted from the female end of rapid-acting coupling 6 endoporus 10, thereby realized breaking away from fast.This rapid-acting coupling, simple in structure, easy to operate, can connect fast and open, compact dimensions, in light weight, have good sealing property and interchangeability.
The female end 6 of rapid-acting coupling and the internal thread ball valve 8 at the import 1 of collection container, the public end 2 of rapid-acting coupling and high pressure rubber hose 7 two ends all adopt stainless steel material to process.
Collection container adopts the PVC twin shaft to process to the coated fabric material, and its strength of materials is high, ageing-resistant, water proof fire retardant, insulation, and has excellent sealing performance; Collection container be shaped as right cylinder.
Collection container is the testing requirements of satisfying all size system, and its volume is made as 4 cubic metres, and the high pressure rubber hose 7 of coupling is for satisfying the testing requirements of all kinds of structural systems, and its length is 4 meters.The quality of collection container and coupling is 18.7kg.The weighing measurement equipment that but selected range is less, precision is higher is measured, accuracy that can better the warranty test result.
This method concrete operations flow process is following:
One, before the test; The public end of rapid-acting coupling 2 (the seeing Fig. 1 or Fig. 2) of collection container are connected with the female end 6 of the rapid-acting coupling of high pressure rubber hose 7 one ends; Open the internal thread ball valve 8 of high pressure rubber hose 7 other ends, in collection container, after the pressurising, close internal thread ball valve 8; Whether collection container and high pressure rubber hose 7, observing has bubble to leak if being put into water.
Two, leak like no bubble, open internal thread ball valve 8, gas in the emptying collection container is weighed collection container and coupling together, and record weight is G1.
Three, confirm low pressure carbon dioxide fire extinguishing systems fire extinguishing agent leak, i.e. the position of low pressure carbon dioxide fire extinguishing systems safety valve, the connected mode of observing the safety valve endpiece is connected safety valve with the internal thread ball valve 8 of high pressure rubber hose 7.
Four, open internal thread ball valve 8 after, require to begin to carry out low pressure carbon dioxide fire extinguishing systems insulation thermal insulation test according to relevant criterion.
Five, after the off-test, close internal thread ball valve 8, and high pressure rubber hose is pulled down from the low pressure carbon dioxide fire extinguishing systems safety valve.
Six, collection container and coupling are weighed once more, recording quality is G2.
Seven, calculate the poor of G2 and G1 quality at last, be the leakage rate of low pressure carbon dioxide fire extinguishing systems fire extinguishing agent.
Claims (10)
1. method of indirectly measuring low pressure carbon dioxide fire extinguishing systems fire extinguishing agent leakage rate; It is characterized in that; Connect the collection container that is used to collect the carbon dioxide extinguishing agent of leakage and has sealing property in low pressure carbon dioxide fire extinguishing systems safety valve exit; With the quality of testing back collection container and coupling thereof, the difference of the quality of twice weigh collection container and coupling thereof is low pressure carbon dioxide fire extinguishing systems fire extinguishing agent leakage rate before the difference experiment with measuring.
2. device of indirectly measuring low pressure carbon dioxide fire extinguishing systems fire extinguishing agent leakage rate; It is characterized in that; Comprise collection container and coupling; Collection container import (1) is connected with the public end of rapid-acting coupling (2) through flange (5), and flange (5) junction is added with sealing gasket (4), and the public end of rapid-acting coupling (2) is connected with the low pressure carbon dioxide fire extinguishing systems safety valve through coupling.
3. the device of indirect measurement low pressure carbon dioxide fire extinguishing systems fire extinguishing agent leakage rate as claimed in claim 2; It is characterized in that; Said coupling adopts two ends to have the high pressure rubber hose (7) of joint, and high pressure rubber hose (7) one ends are the female end of rapid-acting coupling (6), is connected with public (2) straight cutting of holding of the rapid-acting coupling in the collection container import (1); The other end is fixed with internal thread ball valve (8), and is threaded with the safety valve exit through internal thread ball valve (8).
4. the device of indirect measurement low pressure carbon dioxide fire extinguishing systems fire extinguishing agent leakage rate as claimed in claim 3; It is characterized in that; Establish an endoporus (10) on the female end of the rapid-acting coupling of said high pressure rubber hose (7) one ends (6); Evenly be furnished with eight steel balls (11) on endoporus (10) wall, endoporus (10) outside is provided with cutting ferrule (9); The public end of the rapid-acting coupling of collection container (2) is a cylinder; Damaged surface is provided with the groove (3) that is connected with the female end of rapid-acting coupling (6); The female end of rapid-acting coupling simultaneously (6) inside is provided with O RunddichtringO (12), and the inner O RunddichtringO (12) of rapid-acting coupling public end (2) head and the female end of rapid-acting coupling (6) is realized axial seal.
5. like the device of claim 2 and the described indirect measurement low pressure carbon dioxide fire extinguishing systems fire extinguishing agent leakage rate of claim 3; It is characterized in that the female end of rapid-acting coupling (6) and the internal thread ball valve (8) at the import of said collection container (1), the public end of rapid-acting coupling (2) and high pressure rubber hose (7) two ends all adopt stainless steel material to process.
6. the device of indirect measurement low pressure carbon dioxide fire extinguishing systems fire extinguishing agent leakage rate as claimed in claim 2 is characterized in that, said collection container adopts the PVC twin shaft to process to the coated fabric material.
7. the device of indirect measurement low pressure carbon dioxide fire extinguishing systems fire extinguishing agent leakage rate as claimed in claim 3 is characterized in that, the high pressure rubber hose of said coupling (7) is for satisfying the testing requirements of all kinds of structural systems, and its length is 4 meters.
8. the device of indirect measurement low pressure carbon dioxide fire extinguishing systems fire extinguishing agent leakage rate as claimed in claim 6 is characterized in that said collection container is the testing requirements of satisfying all size system, and its volume is made as 4 cubic metres.
9. like the device of claim 7 and the described indirect measurement low pressure carbon dioxide fire extinguishing systems fire extinguishing agent leakage rate of claim 8, it is characterized in that the quality of said collection container and coupling is 18.7kg.
10. the device of indirect measurement low pressure carbon dioxide fire extinguishing systems fire extinguishing agent leakage rate as claimed in claim 9 is characterized in that, said collection container be shaped as right cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110239688 CN102419240B (en) | 2011-08-20 | 2011-08-20 | Method and device for indirectly measuring leaking amount of fire extinguishing agent in low-pressure carbon dioxide fire extinguishing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110239688 CN102419240B (en) | 2011-08-20 | 2011-08-20 | Method and device for indirectly measuring leaking amount of fire extinguishing agent in low-pressure carbon dioxide fire extinguishing system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102419240A true CN102419240A (en) | 2012-04-18 |
| CN102419240B CN102419240B (en) | 2013-09-18 |
Family
ID=45943757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110239688 Active CN102419240B (en) | 2011-08-20 | 2011-08-20 | Method and device for indirectly measuring leaking amount of fire extinguishing agent in low-pressure carbon dioxide fire extinguishing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102419240B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103698095A (en) * | 2013-11-14 | 2014-04-02 | 常州蓝翼飞机装备制造有限公司 | Fire suppression bottle sealing performance detecting device and detecting method thereof |
| CN104481572A (en) * | 2014-12-11 | 2015-04-01 | 四川省科建煤炭产业技术研究院有限公司 | Method and device for carrying out underground coal mine passive fire prevention and extinguishment by liquid carbon dioxide |
| CN112577846A (en) * | 2020-11-30 | 2021-03-30 | 广东星联精密机械有限公司 | Method for detecting carbon dioxide retention performance of bottle by using weighing method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1370008A (en) * | 1970-11-23 | 1974-10-09 | Schoenenberger P | Checking internally pressurised containers for leaks |
| US4929929A (en) * | 1988-05-31 | 1990-05-29 | Dipl.-Ing. Wrede & Niedecken Verwaltung Gmbh | Leakage control mechanism |
| CN2265451Y (en) * | 1995-10-30 | 1997-10-22 | 揭西县南光塑料制品厂 | Connector for pipe |
| CN2351750Y (en) * | 1998-06-11 | 1999-12-01 | 天津市衡器公司 | Automatic controlling weighing apparatus for fire extinguisher |
| CN2682402Y (en) * | 2002-10-16 | 2005-03-02 | 长春可靠消防工程有限公司 | Intelligent electronic leak detection alarm controller |
| CN202159002U (en) * | 2011-08-20 | 2012-03-07 | 公安部天津消防研究所 | Device for indirectly measuring leakage amount of extinguishant of low-voltage carbon dioxide extinguishing system |
-
2011
- 2011-08-20 CN CN 201110239688 patent/CN102419240B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1370008A (en) * | 1970-11-23 | 1974-10-09 | Schoenenberger P | Checking internally pressurised containers for leaks |
| US4929929A (en) * | 1988-05-31 | 1990-05-29 | Dipl.-Ing. Wrede & Niedecken Verwaltung Gmbh | Leakage control mechanism |
| CN2265451Y (en) * | 1995-10-30 | 1997-10-22 | 揭西县南光塑料制品厂 | Connector for pipe |
| CN2351750Y (en) * | 1998-06-11 | 1999-12-01 | 天津市衡器公司 | Automatic controlling weighing apparatus for fire extinguisher |
| CN2682402Y (en) * | 2002-10-16 | 2005-03-02 | 长春可靠消防工程有限公司 | Intelligent electronic leak detection alarm controller |
| CN202159002U (en) * | 2011-08-20 | 2012-03-07 | 公安部天津消防研究所 | Device for indirectly measuring leakage amount of extinguishant of low-voltage carbon dioxide extinguishing system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103698095A (en) * | 2013-11-14 | 2014-04-02 | 常州蓝翼飞机装备制造有限公司 | Fire suppression bottle sealing performance detecting device and detecting method thereof |
| CN104481572A (en) * | 2014-12-11 | 2015-04-01 | 四川省科建煤炭产业技术研究院有限公司 | Method and device for carrying out underground coal mine passive fire prevention and extinguishment by liquid carbon dioxide |
| CN104481572B (en) * | 2014-12-11 | 2016-08-17 | 四川省科建煤炭产业技术研究院有限公司 | A kind of method and device of underground coal mine liquid carbon dioxide passivity fireproof fire-extinguishing |
| CN112577846A (en) * | 2020-11-30 | 2021-03-30 | 广东星联精密机械有限公司 | Method for detecting carbon dioxide retention performance of bottle by using weighing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102419240B (en) | 2013-09-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102419240B (en) | Method and device for indirectly measuring leaking amount of fire extinguishing agent in low-pressure carbon dioxide fire extinguishing system | |
| CN102928193B (en) | The simulation of hot oil pipeline low temperature environment and radial temperature monitoring system | |
| US20080233010A1 (en) | Testing Hydrogen Flux Through Solid and Liquid Barrier Materials | |
| CN202159002U (en) | Device for indirectly measuring leakage amount of extinguishant of low-voltage carbon dioxide extinguishing system | |
| CN110618087A (en) | Corrosion resistance detection device for central heating pipeline | |
| CN206219669U (en) | Sacrificial anode device and water chamber structure | |
| LU102460B1 (en) | Multifunctional Automatic Simulation Test Device for Top Corrosion of Wet Gas Pipeline | |
| CN207366216U (en) | Fire fighting truck conservancy property continuous operation test platform | |
| CN201993208U (en) | Bogie pipeline pressure-maintaining testing device | |
| CN207268214U (en) | A kind of fuel pump testboard | |
| CN206409820U (en) | A kind of portable combined ocean platform barrel of sending and receiving the ball | |
| CN214274848U (en) | High temperature high pressure pipeline tee bend plugging device | |
| CN211042340U (en) | Nozzle flowmeter | |
| CN211577031U (en) | Performance test bench for heat exchange device | |
| CN204164592U (en) | The corrosion-resistant steam jacket thermal insulation pipe of Molten sulphur conveying | |
| CN107478399A (en) | A kind of method that pressure testing is carried out to row's side of a ship outer tube | |
| CN209727935U (en) | A kind of freezing pipe for artificial stratum freezing room indoors modeling test | |
| CN112648446A (en) | Glass fiber reinforced plastic polyurethane direct-buried heat-insulating pipe | |
| CN202708602U (en) | Leakage detecting device for internal oil-gas pipeline | |
| CN105571670A (en) | LNG vacuum calibrating device | |
| CN214951782U (en) | Simple and easy testing arrangement of pipeline vibration based on wireless vibration sensor | |
| CN214502526U (en) | Low-pressure test pump | |
| CN110792877A (en) | Leakage-proof flange cover and using method thereof | |
| CN204788831U (en) | Device that leaks hunting of high -pressure gas spare part | |
| CN219656937U (en) | Device for measuring gas-liquid two-phase flow by nozzle flowmeter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 110 Wei Jinnan Road, Nankai District, Tianjin Patentee after: Tianjin Institute of Fire Protection, Ministry of Emergency Management Address before: No. 110 Wei Jinnan Road, Nankai District, Tianjin Patentee before: Tianjin Fire Fighting Inst., Ministry of Public Security |
|
| CP01 | Change in the name or title of a patent holder |