CN108956315B - Pressure resistance testing device and method for fire extinguisher bottle - Google Patents
Pressure resistance testing device and method for fire extinguisher bottle Download PDFInfo
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- CN108956315B CN108956315B CN201810731859.8A CN201810731859A CN108956315B CN 108956315 B CN108956315 B CN 108956315B CN 201810731859 A CN201810731859 A CN 201810731859A CN 108956315 B CN108956315 B CN 108956315B
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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Abstract
The invention discloses a device and a method for testing the pressure resistance of a fire extinguisher bottle, comprising the following steps: protective and fire extinguisher bottles; a plug for plugging the protective bottle and a ring cover for pressing the plug are arranged at the bottle neck of the protective bottle, and a large-discharge-resistance valve for preventing a large amount of water in the protective bottle from being discharged and a bubble observing hopper for observing whether bubbles emerge from the large-discharge-resistance valve are arranged on the plug; a water inlet of the protective bottle is connected with a water pipe, and the water pipe is provided with a first valve and a first pressure gauge; the fire extinguisher bottle is arranged in the protective bottle, an air inlet of the fire extinguisher bottle is connected with an air pipe, and the air pipe is provided with a valve component, a pressure gauge component, a fire extinguisher pressure gauge detection port and a pressurizing/pressure releasing port. The invention can accurately test whether the fire extinguisher bottle leaks or not, and can not cause casualties when the fire extinguisher bottle explodes; the flowability of the dry powder can be observed without releasing pressure, the dry powder in the fire extinguisher does not need to be taken out, and the pressure resistance test of a fire extinguisher bottle and the test of a fire extinguisher pressure gauge can be realized simultaneously.
Description
Technical Field
The invention relates to the technical field of pressure resistance tests of fire extinguisher bottles, in particular to a pressure resistance test device and a pressure resistance test method for a fire extinguisher bottle.
Background
Due to the safety problem, the existing fire extinguisher bottle cannot be used for pressure resistance test by air pressure; as the metal bottle of the fire extinguisher has huge power after aeration, casualties can be caused. At present, the national standard of fire extinguisher gas cylinders in each country adopts water pressure test, and the basic process of the water pressure test is as follows:
1. releasing the pressure;
2. opening a fire extinguisher valve;
3. taking out the fire extinguishing agent 100%;
4. adding anti-rust water into the fire extinguisher bottle until the bottle is full of the anti-rust water;
5. the large door is arranged in the post-exposure protector, and the large door can be pressurized after being locked;
6. carefully checking whether the fire extinguisher bottle leaks or not; during the inspection process, water leakage is more difficult to detect than air leakage, and because air is thinner than water by multiple times, the hole on the fire extinguisher bottle must be large enough to allow water to drop out for inspection; most of the inside of the protector is shielded particularly after the protector is exposed, so that the observation visual field is influenced;
7. releasing water pressure;
8. baking the inside of the bottle;
9. valves and pipes must also be measured;
10. verify 100% dry in vial with endoscope;
11. and sending out a professional certificate.
Because the fire extinguishers are various in size and difficult to automate, and the pressure resistance test process is time-consuming and labor-consuming, if the pressure resistance test is carried out according to the standard water pressure test steps, the cost of labor, traffic and fire extinguishing agent filling is almost the cost of a new fire extinguisher. Therefore, the fire extinguisher is scrapped after being used for 5 years, is not environment-friendly, is unsafe when a fake report is made, or is directly damaged when powder is filled when a water pressure test is made but the fire extinguisher is not dried.
Meanwhile, the explosion in the hydraulic pressure test can hurt people, so that the dry powder is required to be placed in a protector after the explosion, the door is locked for pressurization, no scientist determines the service life of the dry powder today, some national standards allow 'fire extinguishers which can see the dry powder without pressure release' to be scrapped for ten years, the bottle body is plastic and can be aged, the powder peeping condition of a high-pressure glass window (Z L201520611829.5) exists, and the steel bottle is measured once in 5 years.
Disclosure of Invention
Aiming at the defects in the problems, the invention provides a device and a method for testing the pressure resistance of a fire extinguisher bottle.
In order to achieve the above object, the present invention provides a pressure resistance testing device for a fire extinguisher bottle, comprising:
the bottle comprises a protective bottle, wherein a plug for plugging the protective bottle and a ring cover for tightly pressing the plug are arranged at the bottle neck of the protective bottle, and a large discharge prevention valve for preventing a large amount of water in the protective bottle from being discharged and a water bubble observing hopper for observing whether water bubbles emerge from the large discharge prevention valve are arranged on the plug; a water inlet of the protective bottle is connected with a water pipe, and a first valve and a first pressure gauge are arranged on the water pipe;
the fire extinguisher bottle is arranged in the protection bottle, an air inlet of the fire extinguisher bottle is connected with an air pipe, and the air pipe is provided with a valve assembly, a pressure gauge assembly, a fire extinguisher pressure gauge detection port and a pressurizing/pressure releasing port.
As a further improvement of the invention, a safety valve is arranged on the protective bottle.
As a further improvement of the invention, the plug is provided with a sealing ring for sealing the joint of the protective bottle and the plug.
As a further improvement of the invention, the ring cover is fixed on the bottleneck of the protection bottle through a bolt, a stroke device is installed on the bottleneck of the protection bottle, and the valve component comprises an electromagnetic valve; when the nut of the bolt is screwed to press the ring cover against the plug, the nut of the bolt abuts against the stroke device, and the electromagnetic valve is controlled to be opened through the stroke device.
As a further improvement of the present invention, the valve assembly further comprises a second valve, a third valve, a fourth valve, a fifth valve, and a pressure reducing valve;
the pressure reducing valve is arranged between the electromagnetic valve and the air source, the second valve is arranged between the electromagnetic valve and the pressure reducing valve, and the third valve is arranged between the electromagnetic valve and the second valve;
the fire extinguisher pressure gauge detection port and the pressurizing/pressure releasing port are arranged between the electromagnetic valve and the air inlet of the fire extinguisher bottle, the fourth valve is arranged on the fire extinguisher pressure gauge detection port, and the fifth valve is arranged on the pressurizing/pressure releasing port.
As a further improvement of the present invention, the pressure gauge assembly includes a second pressure gauge and a third pressure gauge;
the second pressure gauge is arranged between the second valve and the third valve, and the third pressure gauge is arranged between the electromagnetic valve and the air inlet of the fire extinguisher bottle.
The invention also provides a test method of the fire extinguisher bottle pressure resistance test device, which comprises the following steps:
and 6, opening the bolt, the ring cover and the plug, taking out the fire extinguisher bottle, loosening the air pipe, installing the pressure gauge and completing detection.
In step 3, when dry powder exists in the fire extinguisher bottle, nitrogen is introduced; when the fire extinguisher bottle is empty, dry air is introduced.
As a further improvement of the invention, in step 5, the detection pressure of the fire extinguisher pressure gauge is 1.1-1.2 times of the working pressure of the fire extinguisher pressure gauge.
Compared with the prior art, the invention has the beneficial effects that:
the invention firstly adds water to the outside of the fire extinguisher until the water overflows to the water observing bubble bucket, and then adds test air pressure to the interior of a fire extinguisher bottle; when the fire extinguisher bottle explodes, a large amount of water in the protective bottle is blocked only by ejecting a few drops of water from the large discharge blocking valve, so that the pressure of the water is the same as the test pressure, and the explosion speed of the fire extinguisher bottle in the water is forced to be slow, the crack is smaller, and the sound is smaller;
according to the invention, whether bubbles appear at the bubble observing bucket is checked, if so, the fire extinguisher is proved to be scrapped, and if not, the fire extinguisher is proved to be intact; tiny air leakage holes on the fire extinguisher bottle can be seen through the bubble observing bucket, so that the problems of missed detection, wrong detection and the like of the pressure resistance test of the fire extinguisher bottle are avoided;
the testing device can realize the pressure resistance test of the fire extinguisher bottle and the pressure gauge test of the fire extinguisher through one-time pressurization.
Drawings
FIG. 1 is a structural diagram of a pressure resistance testing device of a fire extinguisher bottle according to an embodiment of the present invention;
FIG. 2 is an exploded view of a fire extinguisher cylinder pressure resistance test apparatus disclosed in one embodiment of the present invention;
FIG. 3 is an enlarged view of FIG. 1 at A;
fig. 4 is an enlarged view of fig. 1 at B.
In the figure:
1. a protective bottle; 2. a bottleneck; 3. a safety valve; 4. a ring cover; 5. a large discharge resistance valve; 6. a bolt; 7. observing a bubble bucket; 8. a first valve; 9. a seal ring; 10. a plug; 11. a first pressure gauge; 12. a pressure gauge of the fire extinguisher; 13. a second pressure gauge; 14. a second valve; 15. a third valve; 16. a fourth valve; 17. a third pressure gauge; 18. a fire extinguisher bottle; 19. an electromagnetic valve; 20. a pressure reducing valve; 21. an air tube; 22. a water pipe; 23. a fifth valve; 24. a stroker; 25. a spring.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The invention is described in further detail below with reference to the attached drawing figures:
as shown in fig. 1 to 4, the present invention provides a pressure resistance testing apparatus for a fire extinguisher cylinder, comprising: the device comprises a protective bottle 1, a bottle neck 2, a safety valve 3, an annular cover 4, a large discharge prevention valve 5, a bolt 6, a water observation bubble bucket 7, a first valve 8, a sealing ring 9, a plug 10, a first pressure gauge 11, a fire extinguisher pressure gauge 12, a second pressure gauge 13, a second valve 14, a third valve 15, a fourth valve 16, a third pressure gauge 17, a fire extinguisher bottle 18, an electromagnetic valve 19, a pressure reducing valve 20, an air pipe 21, a water pipe 22, a fifth valve 23, a stroke device 24 and a spring 25; wherein:
as shown in fig. 1-2, a protective bottle 1 of the present invention is placed on a base, a bottle neck 2 is welded or integrally formed at an upper opening of the protective bottle 1, and a safety valve 3 is installed on the protective bottle 1; the plug 10 is plugged at the upper opening of the protective bottle 1, and the protective bottle 1 is sealed into a closed container; in order to improve the sealing property between the stopper 10 and the protective bottle 1, a packing 9 is provided on the stopper 10. In order to prevent the plug 10 from being popped up in case of explosion when the air pressure is added to the fire extinguisher bottle 18, the plug 10 is provided with the ring cover 4 for compressing the plug 10, the ring groove at the bottom of the ring cover 4 is matched with the outer edge of the compressed plug 10, the ring cover 4 and the bottle neck 2 are matched and provided with a plurality of bolt holes, and the ring cover 4 is fixed on the bottle neck 2 of the protective bottle 1 through bolts 6. A water pipe 22 is connected to the water inlet of the protection bottle 1, a first valve 8 and a first pressure gauge 11 are arranged on the water pipe 22, a sealing ring is arranged at the joint of the water pipe 22 and the bottle wall of the protection bottle 1, one end of the water pipe 22 is connected with a water source, and the other end of the water pipe 22 is connected into the protection bottle 1; after the first valve 8 is opened, water is added into the protective bottle 1 through the water pipe 22, and the water is filled in the observing bubble bucket 7; when the protective bottle 1 is full of water, the first valve 8 is closed;
as shown in fig. 4, the stopper 10 of the present invention is provided with a large discharge prevention valve 5 for preventing a large amount of water in the protective bottle 1 from being discharged and a bubble observing bucket 7 for observing whether bubbles are emitted from the large discharge prevention valve 5, and the large discharge prevention valve 5 and the bubble observing bucket 7 have the structures shown in fig. 1, 2 and 4; specifically, the method comprises the following steps: the middle part of the plug 10 is provided with a stud, the middle part of the stud is provided with a water through hole communicated with the protective bottle 1, the lower end of the water observing bubble bucket 7 is screwed on the stud, the valve rod of the large discharge prevention valve 5 penetrates through the water through hole in the middle part of the water observing bubble bucket 7, the upper end of the valve rod is screwed with a mushroom-shaped handle, and the lower end plug of the valve rod is tightly pressed on the water through hole of the stud under the action of a spring 35. When the water discharge is small, the colloid plug at the lower end of the valve rod is pushed down, water flow can be discharged through a water passing hole of the stud bolt and a gap between the valve rod and a water passing hole in the middle of the water observing bubble bucket 7, and bubbles can be seen to emerge from the water observing bubble bucket 7; when the water discharge is large, the plug of the large discharge valve 5 can plug the water through hole in the middle of the bubble observing bucket 7, so that the large discharge water cannot be discharged.
As shown in fig. 1-2, the fire extinguisher bottle 18 of the present invention is placed in the protective bottle 1, and the dry powder fire extinguisher floats on the water, so that the bottle feet do not touch the bottom; an air pipe 21 is connected at the air inlet of the fire extinguisher bottle 18, and a sealing ring is arranged at the joint of the air pipe 21 and the bottle wall of the protection bottle 1; one end of the air pipe 21 is connected with an air source, and the other end is communicated with the fire extinguisher bottle 18; the air pipe 21 is provided with a valve component, a pressure gauge component, a fire extinguisher pressure gauge detection port for installing a fire extinguisher pressure gauge 12 and a pressurizing/pressure releasing port. Specifically, the method comprises the following steps:
the valve assembly comprises a solenoid valve 19, a second valve 14, a third valve 15, a fourth valve 16, a fifth valve 23 and a pressure reducing valve 20; a pressure reducing valve 20 is provided between the solenoid valve 19 and the gas source, a second valve 14 is provided between the solenoid valve 19 and the pressure reducing valve 20, and a third valve 15 is provided between the solenoid valve 19 and the second valve 14; a detection port of a fire extinguisher pressure gauge and a pressurizing/pressure-releasing port are arranged between the electromagnetic valve 19 and an air inlet of the fire extinguisher bottle 18, a fourth valve 16 is arranged on the detection port of the fire extinguisher pressure gauge, and a fifth valve 23 is arranged on the pressurizing/pressure-releasing port; the second valve 14 can adjust the displacement, and one type of fire extinguisher can be adjusted only once. The pressure gauge assembly comprises a second pressure gauge 13 and a third pressure gauge 17, the second pressure gauge 13 is arranged between a second valve 14 and a third valve 15, and the third pressure gauge 17 is arranged between a solenoid valve 19 and an air inlet of a fire extinguisher cylinder 18.
As shown in FIG. 3, the stopper of the protection bottle of the present invention is provided with the stroke 24, the stroke 24 is connected to the solenoid valve 19 through a P L C controller (not shown), which is the basic principle of the stroke 24, P L C controller and solenoid valve and will not be described in detail herein, when the nut of the bolt 6 is tightened to press the ring cover 4 against the stopper 10, the nut of the bolt 6 abuts against the stroke 24, the solenoid valve 19 is controlled to open through the stroke 24, and if the bolt 6 or other complicated quick fastening device is not put on, the stroke 24 controls the solenoid valve 19 to close, even if the second valve 14 and the third valve 15 are opened, the nitrogen gas cannot pressurize the fire extinguisher bottle through the solenoid valve 19.
The invention provides a method for testing the pressure resistance of a fire extinguisher bottle, which has the following principle: after the system is produced, firstly, the water pressure test of 4 times of the test pressure is carried out for 100bar, and then, before each test, water is added into the protective bottle under no pressure to overflow the water observing and soaking bucket; then adding the air pressure of the bottle to the tested pressure of 25bar according to the standard time, maintaining the pressure according to the standard time, and then releasing the pressure; the specific process is as follows:
and step 10, opening the bolt, the ring cover and the plug, taking out the fire extinguisher bottle, loosening the air pipe, connecting a pressure gauge, and finishing detection when the reading of the pressure gauge is the same as that in the step 9.
Further, the working pressure of the protective bottle 1 of the present invention is preferably 4 times the test pressure, which is more than four times the burst pressure; a slow burst at a test pressure of 25bar, of 100bar, is safe.
Furthermore, the device can be suitable for fire extinguishers with medicaments, nitrogen is selected at the moment, and besides the pressure resistance of a fire extinguisher bottle, a pressure gauge of the fire extinguisher can also be measured; the dry powder fire extinguisher with the empty bottle without the medicament or with insufficient air pressure before testing is only suitable for testing the empty bottle, and dry powder must be removed before testing.
According to the invention, water is added to the outside of the fire extinguisher to overflow the water observation bubble bucket, and then test air pressure is added to the fire extinguisher bottle, so that the pressure resistance test of the fire extinguisher bottle is realized; when the fire extinguisher bottle explodes, a large amount of water in the protective bottle is blocked only by ejecting a few drops of water from the large discharge blocking valve, so that the pressure of the water is the same as the test pressure, the explosion speed of the fire extinguisher bottle in the water is forced to be reduced, the crack is smaller, and the sound is smaller; according to the invention, whether bubbles appear at the bubble observing bucket is checked, if so, the fire extinguisher is proved to be scrapped, and if not, the fire extinguisher is proved to be intact; tiny air leakage holes on the fire extinguisher bottle can be seen through the bubble observing bucket, so that the problems of missed detection, wrong detection and the like of the pressure resistance test of the fire extinguisher bottle are avoided; the testing device can realize the pressure resistance test of the fire extinguisher bottle and the pressure gauge of the fire extinguisher through one-time pressurization.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The utility model provides a fire extinguisher bottle withstand voltage testing arrangement which characterized in that includes:
the bottle comprises a protective bottle, wherein a plug for plugging the protective bottle and a ring cover for tightly pressing the plug are arranged at the bottle neck of the protective bottle, and a large discharge prevention valve for preventing a large amount of water in the protective bottle from being discharged and a water bubble observing hopper for observing whether water bubbles emerge from the large discharge prevention valve are arranged on the plug; a water inlet of the protective bottle is connected with a water pipe, and a first valve and a first pressure gauge are arranged on the water pipe;
the fire extinguisher bottle is arranged in the protective bottle, an air inlet of the fire extinguisher bottle is connected with an air pipe, and the air pipe is provided with a valve assembly, a pressure gauge assembly, a fire extinguisher pressure gauge detection port and a pressurizing/pressure releasing port; wherein the valve assembly comprises a solenoid valve, and the solenoid valve is arranged between the gas source and the gas inlet of the fire extinguishing bottle; the pressure gauge assembly comprises a second pressure gauge and a third pressure gauge which are arranged on two sides of the electromagnetic valve; and the detection port of the fire extinguisher pressure gauge and the pressurizing/pressure-releasing port are arranged between the electromagnetic valve and the air inlet of the fire extinguishing bottle.
2. The fire extinguisher cylinder pressure resistance test apparatus as set forth in claim 1, wherein a safety valve is installed on the protection cylinder.
3. The fire extinguisher bottle pressure withstanding testing apparatus of claim 1, wherein the plug is provided with a sealing ring for sealing a joint of the protection bottle and the plug.
4. The fire extinguisher cylinder pressure resistance testing device according to claim 1, wherein the ring cover is fixed on the neck of the protective bottle through a bolt, a stroke device is installed on the neck of the protective bottle, and the valve assembly comprises an electromagnetic valve; when the nut of the bolt is screwed to press the ring cover against the plug, the nut of the bolt abuts against the stroke device, and the electromagnetic valve is controlled to be opened through the stroke device.
5. The fire extinguisher cylinder pressure withstanding test apparatus of claim 4, wherein said valve assembly further comprises a second valve, a third valve, a fourth valve, a fifth valve and a pressure reducing valve;
the pressure reducing valve is arranged between the electromagnetic valve and the air source, the second valve is arranged between the electromagnetic valve and the pressure reducing valve, and the third valve is arranged between the electromagnetic valve and the second valve;
the fire extinguisher pressure gauge detection port and the pressurizing/pressure releasing port are arranged between the electromagnetic valve and the air inlet of the fire extinguisher bottle, the fourth valve is arranged on the fire extinguisher pressure gauge detection port, and the fifth valve is arranged on the pressurizing/pressure releasing port.
6. The fire extinguisher cylinder pressure withstanding test apparatus of claim 5, wherein the pressure gauge assembly comprises a second pressure gauge and a third pressure gauge;
the second pressure gauge is arranged between the second valve and the third valve, and the third pressure gauge is arranged between the electromagnetic valve and the air inlet of the fire extinguisher bottle.
7. A method for testing a fire extinguisher cylinder pressure resistance testing apparatus as claimed in claim 6, comprising:
step 1, taking out a pressure gauge through a pressure gauge interface provided with a one-way valve, connecting an air pipe on the interface, placing a fire extinguisher bottle in a protective bottle, plugging a plug, pressing an annular cover and an upper bolt, screwing the bolt until a nut of the bolt is pressed against a stroke device, and controlling an electromagnetic valve to be opened safely through the stroke device;
step 2, all valves are closed in the initial state, then the first valve is opened, and water is fed into the protective bottle without pressure and overflows to the water observation bubble hopper; after completion, closing the first valve;
step 3, opening the second valve and the third valve, introducing air into the fire extinguisher bottle, pressurizing to the detection pressure of the fire extinguisher bottle, and keeping the pressure after pressurization is finished;
step 4, checking whether bubbles appear at the bubble observing bucket or not, if so, proving that the fire extinguisher is scrapped, and if not, proving that the fire extinguisher is intact;
step 5, closing the third valve, opening the fifth valve, and reducing the air pressure to the detection pressure of a pressure gauge of the fire extinguisher; installing a pressure gauge of the fire extinguisher on a detection port of the pressure gauge of the fire extinguisher, and opening a fourth valve; opening a fifth valve, enabling the air pressure to reach the working pressure of a pressure gauge of the fire extinguisher from the detection pressure of the pressure gauge of the fire extinguisher, and comparing the readings of the third pressure gauge and the pressure gauge of the fire extinguisher to finish the detection of the pressure gauge of the fire extinguisher;
and 6, opening the bolt, the ring cover and the plug, taking out the fire extinguisher bottle, loosening the air pipe, installing the pressure gauge and completing detection.
8. The method for testing a fire extinguisher cylinder pressure resistance testing apparatus as claimed in claim 7, wherein in step 3, when dry powder is present in the fire extinguisher cylinder, nitrogen gas is introduced; when the fire extinguisher bottle is empty, dry air is introduced.
9. The method for testing the pressure resistance testing device of the fire extinguisher bottle as claimed in claim 7, wherein in the step 5, the detection pressure of the pressure gauge of the fire extinguisher is 1.1 to 1.2 times of the working pressure of the pressure gauge of the fire extinguisher.
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| CN201810731859.8A CN108956315B (en) | 2018-07-05 | 2018-07-05 | Pressure resistance testing device and method for fire extinguisher bottle |
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| CN201810731859.8A CN108956315B (en) | 2018-07-05 | 2018-07-05 | Pressure resistance testing device and method for fire extinguisher bottle |
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| CN108956315B true CN108956315B (en) | 2020-07-31 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109782721B (en) * | 2019-01-30 | 2020-06-12 | 赛摩电气股份有限公司 | Aging sealing detection unit of fire extinguisher finished product reinspection system and control method |
| CN109999388B (en) * | 2019-04-23 | 2020-10-20 | 消防贸易私营有限公司 | Fire extinguisher with permanent pressure starting valve arranged in hose |
| CN114487654B (en) * | 2021-12-31 | 2023-03-21 | 徐州双驰消防器材有限公司 | Pressure resistance test equipment for intelligent processing of fire extinguisher bottle and test method thereof |
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