Test fire extinguishing bottle

Abstract

A test fire extinguishing bottle is used for simulating different release states of a fire extinguishing agent, and comprises: a bottle body for storing a fire extinguishing material; a filling part for filling the fire extinguishing material from a filling device into the bottle body; and the release part is used for releasing the fire extinguishing material stored in the bottle body, and the release part is controlled by a control device to control the opening degree of a release valve so as to simulate different release states of the test fire extinguishing bottle. Through the test fire extinguishing bottle disclosed by the invention, the release state of the fire extinguishing agent under specific conditions can be accurately reproduced, and the test fire extinguishing bottle can be quickly and repeatedly used at low cost.

Description

Technical Field

[0001] The utility model relates to a test fire extinguisher bottle, in particular to a test fire extinguisher bottle capable of simulating different release states of a fire extinguisher bottle on an airplane. Background Art

[0002] In an aircraft, the onboard fixed fire extinguisher bottles are an important part of the aircraft fire protection system, mainly including engine fire extinguisher bottles, APU fire extinguisher bottles and cargo hold fire extinguisher bottles, etc., which can suppress or extinguish the fire when a fire occurs, thereby ensuring the safety of the aircraft and personnel.

[0003] Airborne fire extinguisher bottles generally have high requirements for the concentration and duration of fire extinguishing agent release. Test fire extinguisher bottles can simulate the filling amount and filling pressure of different fire extinguishing agents, and are used to test related fire protection systems in the laboratory to verify whether the performance of the designed and loaded fire protection system can meet the system design indicators.

[0004] The release principle of the existing test fire extinguisher bottle is the same as that of the airborne fire extinguisher bottle. Both use an explosive diaphragm to block the fire extinguishing agent release port, and one end of the fire extinguishing agent release port is connected to the fire extinguishing pipeline through a joint, and the other end is connected to the explosive cap and the aircraft cable. When the fire extinguisher bottle is started, the fuse is quickly heated by the current and melted. The heat generated by the melting causes the explosive to explode and break through the explosive diaphragm of the fire extinguisher bottle, thereby releasing the fire extinguishing agent from the fire extinguisher bottle.

[0005] However, the use and maintenance costs of existing test fire extinguisher bottles are high. Although the fire extinguisher bottle body can be reused, the unit price of the explosion cap and the explosion membrane is high, and they cannot be reused after the fire extinguishing agent is released. They need to be replaced with special tools and equipment, which cannot be completed at the test site. They need to be returned to the factory for maintenance, and there are special requirements for packaging and transportation, which leads to long filling and repair cycles, high costs, and low test efficiency.

[0006] In addition, the explosion degree of the above-mentioned explosive membrane is an important factor affecting the fire extinguishing effect. However, through experiments, it is found that the explosion area that measures the explosion degree has a certain randomness. The existing test fire extinguisher bottle cannot quantitatively evaluate the release effect of the fire extinguishing agent when the explosion membrane of the fire extinguisher bottle is at different explosion degrees.

[0007] In addition, for the exploding diaphragm of a fire extinguisher bottle that did not explode completely as expected on an aircraft, existing test fire extinguishers cannot accurately reproduce the failure condition, making it difficult to find the cause of the failure.

[0008] In view of the above-mentioned deficiencies in the prior art, how to provide a test fire extinguisher bottle that can be reused quickly and at low cost becomes a technical problem that needs to be solved urgently. Utility Model Content

[0009] The present disclosure is made to solve the above technical problems, and its purpose is to provide a test fire extinguisher bottle, which can accurately reproduce the release state of the fire extinguishing agent under specific conditions and can be reused quickly and at low cost.

[0010] In order to achieve the purpose of the present disclosure, a test fire extinguisher bottle is provided, which is used to simulate different release states of the fire extinguishing agent, wherein the test fire extinguisher bottle comprises: a bottle body, which is used to store fire extinguishing material; a filling part, which fills the fire extinguishing material from a filling device into the bottle body; and a releasing part, which is used to release the fire extinguishing material stored in the bottle body, and the releasing part controls the opening of a releasing valve under the control of a control device to simulate different release states of the test fire extinguisher bottle.

[0011] According to the above configuration, the release valve of the release portion is controlled by the control device, so that the opening of the release valve can be accurately controlled, thereby simulating the fire extinguishing agent release state of the test fire extinguisher bottle at different valve openings.

[0012] Preferably, the filling portion comprises a filling valve and a filling port, the filling port is connected to an external filling device, and the filling valve is used to control the opening and closing of a filling path from the filling device to the bottle body.

[0013] Preferably, the filling portion further comprises a pressure relief valve, which is disposed on the bottle body and automatically opens to release the pressure in the bottle body when the pressure in the bottle body is too high.

[0014] According to the above structure, the filling path is opened and closed by the filling valve to accurately control the filling of the fire extinguishing agent, and when the fire extinguishing agent is overfilled, the pressure in the bottle can be released by the pressure relief valve, thereby effectively ensuring safety.

[0015] Preferably, the release portion includes a release valve, a valve positioner and an actuator, and the valve positioner controls the actuator under the control of the control device to adjust the valve of the release valve to a desired opening.

[0016] Preferably, the control device includes a controller, a computer and a vacuum pump, the valve opening of the release valve is set in the computer, the controller sends the opening and actuation signals to the valve positioner, and uses the actuator cylinder to accurately control the valve opening of the release valve through the high-pressure air source from the vacuum pump.

[0017] According to the above configuration, the valve opening of the release portion can be controlled by the control device, and the valve opening can be accurately adjusted to a desired opening, thereby simulating the fire extinguishing agent release state under different opening conditions.

[0018] Preferably, the filling device comprises a filler, a nitrogen bottle and a fire extinguishing agent bottle, the filler is used to fill the fire extinguishing material into the bottle body, and the nitrogen bottle and the fire extinguishing agent bottle store nitrogen and fire extinguishing agent respectively.

[0019] Preferably, when filling the fire extinguishing material, first, the fire extinguishing agent in the fire extinguishing agent bottle is filled into the bottle body with a predetermined filling amount, and then the nitrogen in the nitrogen bottle is filled into the bottle body with a predetermined pressure value.

[0020] According to the above configuration, the fire extinguishing agent is used to extinguish the fire in case of fire, and the nitrogen gas is used to increase the pressure in the bottle and enhance the fire extinguishing effect of the fire extinguishing agent.

[0021] Preferably, the test fire extinguisher bottle further comprises a mounting portion, and the mounting portion is disposed on the bottle body, and the test fire extinguisher bottle is mounted on a fixing frame located at a test site through the mounting portion.

[0022] According to the above structure, the test fire extinguisher bottle is fixed to the fixing frame of the test site by the mounting part, so that the simulation test of the test fire extinguisher bottle can be better performed.

[0023] Preferably, the test fire extinguisher bottle further comprises a diaphragm fixing portion, which is disposed adjacent to the release portion and holds an explosion diaphragm for testing.

[0024] According to the above configuration, by providing the diaphragm fixing portion holding the exploding diaphragm adjacent to the release portion, the degree of explosion can be more accurately reflected when the release portion releases the fire extinguishing material.

[0025] Preferably, the bottle body is formed in a spherical shape.

[0026] According to the above configuration, by forming the bottle body of the test fire extinguisher bottle into a spherical shape, the pressure bearing capacity of the bottle body can be enhanced, and the overall weight of the storage container can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] With reference to the above purposes, the technical features of the present invention are clearly described in the following technical scheme, and its advantages are obvious from the following detailed description with reference to the accompanying drawings, which show the preferred embodiments of the present invention by way of example without limiting the scope of the concept of the present invention.

[0028] Figure 1It is a schematic diagram of the overall structure of the test fire extinguisher bottle of the utility model.

[0029] Figure 2 It is a control schematic diagram of the test fire extinguisher bottle of the utility model when it is in the filling and releasing state.

[0030] Explanation of symbols

[0031] 1 Test fire extinguisher bottle;

[0032] 10 Bottle body;

[0033] 11 filling part;

[0034] 11a filling valve;

[0035] 11b filling port;

[0036] 11c pressure relief valve;

[0037] 12 Release Department;

[0038] 12a Release valve;

[0039] 12b Release line;

[0040] 12c release port;

[0041] 12d valve positioner;

[0042] 12e actuator;

[0043] 13. Installation Department;

[0044] 14 diaphragm fixing part;

[0045] 2 Filling device;

[0046] 21 Filler;

[0047] 22 nitrogen cylinders;

[0048] 23 Fire extinguisher bottles;

[0049] 3. Control device;

[0050] 31 Controller;

[0051] 32 Computer;

[0052] 33 Vacuum pump;

[0053] 4 Fire extinguishing pipeline. DETAILED DESCRIPTION

[0054] Various embodiments of the present invention will now be described in detail, examples of which are shown in the accompanying drawings. Although the present invention is described in conjunction with exemplary embodiments, it should be appreciated that this specification is not intended to limit the present invention to the exemplary embodiments described below. On the contrary, the present invention is intended to cover not only these exemplary embodiments, but also various alternative forms, modified forms, equivalent forms and other embodiments that may be included within the spirit and scope of the present invention as defined by the appended claims.

[0055] Below, refer to Figure 1 , the overall structure of the test fire extinguisher bottle 1 of the present utility model is described. Figure 1 It is a schematic diagram showing the overall structure of the test fire extinguisher bottle 1 of the present utility model.

[0056] like Figure 1 As shown, the test fire extinguisher bottle 1 of the present invention mainly comprises a bottle body 10 , a filling portion 11 , a release portion 12 , a mounting portion 13 and a diaphragm fixing portion 14 .

[0057] The bottle body 10 is substantially spherical in shape and is mainly used to carry materials such as fire extinguishing agent and nitrogen for achieving fire extinguishing.

[0058] The filling portion 11 is disposed above the test fire extinguisher bottle 1 and is mainly used to fill the bottle body 10 with fire extinguishing materials such as fire extinguishing agent and nitrogen from the outside.

[0059] The release portion 12 is disposed below the test fire extinguisher bottle 1 and is mainly used to release the fire extinguishing material stored in the bottle body 10 during a simulated fire extinguishing test.

[0060] The mounting portion 13 is disposed on the bottle body 10 , more specifically, at a substantially middle position of the test fire extinguisher bottle 1 , and is used to fix the test fire extinguisher bottle 1 at a test site.

[0061] In this example, the mounting portion 13 is shown as a mounting ear piece extending outward relative to the bottle body 10, and the mounting ear piece is engaged with a receiving portion (not shown) provided in the test site, thereby fixing the test fire extinguisher bottle 1 in the test site.

[0062] The diaphragm fixing portion 14 is used to hold the explosive diaphragm for testing, and is disposed adjacent to the release portion 12 , so as to more accurately reflect the degree of explosion when the release portion 12 releases the fire extinguishing material.

[0063] In addition, the "explosive diaphragm used for the test" refers to a diaphragm that did not explode completely as expected, that is, a faulty diaphragm after the test fire extinguisher bottle originally equipped with the bursting diaphragm exploded. By setting the faulty diaphragm in the test fire extinguisher bottle disclosed in the present invention, the fault can be reproduced and the cause of the fault can be found.

[0064] Below, refer to Figure 2 , the specific structure of each part of the test fire extinguisher bottle 1 of the present invention is described. Figure 2 It is a control schematic diagram of the test fire extinguisher bottle 1 of the utility model when it is in the filling and releasing state.

[0065] like Figure 2 As shown, in the test fire extinguisher bottle 1 of the present invention, the filling part 11 mainly includes a filling valve 11a, a filling port 11b and a pressure relief valve 11c.

[0066] The filling valve 11a is used to control the opening and closing of the filling path. When the filling valve 11a is opened, the fire extinguishing material from the outside is allowed to enter the bottle body 10 through the filling path. When the filling valve 11a is closed, the fire extinguishing material from the outside is prevented from entering the bottle body 10 through the filling path.

[0067] The filling port 11 b is used to be connected to an external filling device 2 so as to introduce the fire extinguishing material from the outside into the bottle body 10 .

[0068] The pressure relief valve 11 c is disposed on the substantially spherical bottle body 10 , and releases the pressure in the bottle body 10 when the pressure in the bottle body 10 is too high due to the filling of the fire extinguishing material.

[0069] The bottle body 10 is formed into a roughly spherical shape. Under the same internal pressure, the stress on the shell of the spherical pressure vessel is only half of the tangential stress on the shell of a cylindrical pressure vessel with the same diameter and wall thickness. Therefore, the wall thickness of the spherical pressure vessel can be reduced to half of the wall thickness of a cylindrical pressure vessel with the same diameter, thereby reducing the overall weight of the storage container.

[0070] The filling device 2 mainly includes a filler 21, a nitrogen bottle 22 and a fire extinguishing agent bottle 23. The filler 21 is used to fill the fire extinguishing material from the outside into the bottle body 10 of the test fire extinguishing bottle 1. The nitrogen bottle 22 and the fire extinguishing agent bottle 23 are respectively used to store nitrogen and fire extinguishing agent as fire extinguishing materials.

[0071] When filling the test fire extinguisher bottle 1 with fire extinguishing material, first, connect the filling port 11b of the test fire extinguisher bottle 1 to the external filling device 2, then open the filling valve 11a of the test fire extinguisher bottle 1 and the fire extinguishing agent bottle 23 of the filling device 2, and fill the fire extinguishing agent stored in the fire extinguishing agent bottle 23 into the bottle body 10 through the filling port 11b, and close the fire extinguishing agent bottle 23 after reaching a predetermined filling amount.

[0072] Then, open the nitrogen cylinder 22, and fill the nitrogen stored in the nitrogen cylinder 22 into the bottle body 10 through the filling port 11b. After reaching a predetermined pressure value, close the nitrogen cylinder 22 and the filling valve 11a, and after the filling device 2 is depressurized, disconnect the filling device 2 from the filling port 11b, thereby completing the filling.

[0073] The fire extinguishing agent filled in the bottle 10 is mainly used to extinguish fire in case of fire, and the nitrogen filled in the bottle 10 plays a role in driving the fire extinguishing agent to spray out. Filling nitrogen can increase the pressure in the bottle 10, so that when the fire extinguishing agent is released, pressure can be applied to push the fire extinguishing agent out of the test fire extinguishing bottle 1. On the other hand, nitrogen, as an inert gas, can take away oxygen from the oxidant to achieve the purpose of extinguishing the fire source.

[0074] In addition, when the pressure in the bottle body 10 is too high due to overfilling, the pressure relief valve 11 c will automatically open to release the pressure in the bottle body 10, thereby ensuring safety.

[0075] Compared with the previous fire extinguisher bottles, the filling process of the test fire extinguisher bottle 1 of the utility model does not require the replacement of the explosion membrane and the explosion cap, has a simple structure, and can be filled and maintained on site, thereby reducing the test cost and improving the test efficiency.

[0076] In addition, since the bursting diaphragm and the bursting cap do not need to be replaced during the filling process, there is no need to return to the factory to replace the bursting cap and the bursting diaphragm, which can greatly reduce the test cost and improve the test efficiency.

[0077] Then, if Figure 2 As shown, in the test fire extinguisher bottle 1 of the present invention, the release part 12 mainly includes a release valve 12a, a release pipeline 12b, a release port 12c, a valve positioner 12d and an actuator 12e.

[0078] The release valve 12a is used to control the opening and closing of the release path. When the release valve 12a is opened, the fire extinguishing material stored in the bottle 10 is allowed to be released into the fire extinguishing pipeline 4. When the release valve 12aa is closed, the fire extinguishing material stored in the bottle 10 is prevented from being released into the fire extinguishing pipeline 4.

[0079] In addition, the release valve 12a can be designed into various types, not limited to pneumatic valves, as long as it can have the function of opening quickly and being put into place quickly.

[0080] The release pipeline 12 b and the release port 12 c are disposed below the release valve 12 a and are used to release the fire extinguishing material stored in the bottle body 10 .

[0081] The valve positioner 12d and the actuator 12e are disposed relative to the release valve 12a. The valve positioner 12d controls the actuator 12e under the control of the external control device 3 to adjust the valve of the release valve 12a to a desired opening.

[0082] In addition, a diaphragm fixing portion 14 is provided on the release pipeline 12b of the release portion 12, and an explosion diaphragm is fixed by the diaphragm fixing portion 14, so as to simulate the fire extinguishing agent release effect under different explosion degrees.

[0083] The control device 3 mainly includes a controller 31 , a computer 32 and a vacuum pump 33 .

[0084] When the test fire extinguisher bottle 1 releases the fire extinguishing material, first, the test fire extinguisher bottle 1 is mounted on a fixed frame located at the test site through the mounting ear piece as the mounting portion 13, and the release pipeline 12b is connected to the fire extinguishing pipeline 4 through the release port 12c. Then, the vacuum pump 33 is turned on to provide a high-pressure gas source to the valve positioner 12d through the controller 31.

[0085] According to the specific requirements of the test, the valve opening of the release valve 12a is set in the computer 32 of the above-mentioned control device 3, and the opening of the release valve can be adjusted in the range of 0% fully closed to 100% fully open, so as to quantitatively simulate the different degrees of explosion of the explosion membrane of the fire extinguisher bottle, that is, simulate the different release states of the fire extinguisher bottle.

[0086] After receiving the instruction to release the fire extinguisher bottle, the controller 31 of the above-mentioned control device 3 sends the opening and actuation signals to the valve positioner 12d. The microprocessor in the valve positioner 12d performs difference calculation on the set value and feedback value of the valve opening of the release valve 12a, and after the high-pressure gas source from the vacuum pump 33 is connected, the valve opening of the release valve 12a is accurately controlled through the actuator cylinder 12e.

[0087] After the release valve 12a is opened, the fire extinguishing agent passes through the release valve 12a, the release pipeline 12b, the bursting membrane and the release port 12c and enters the fire extinguishing pipeline 4, thereby completing the release of the fire extinguishing agent.

[0088] The release of the fire extinguishing agent of the test fire extinguishing bottle 1 of the utility model is precisely controlled by the valve positioner 12d, the actuator 12e and the release valve 12a. The valve positioner 12 is connected to the release valve 12a through the actuator 12e, and can accurately obtain the opening feedback value of the release valve. When the test fire extinguishing bottle 1 is started to release the fire extinguishing agent, the microprocessor in the valve positioner 12d performs a difference operation on the opening setting value and the opening feedback value, so as to accurately control the opening of the release valve and quickly reach the setting value required for the test to extinguish the fire.

[0089] In addition, the valve opening (0 to 100%) of the release valve 12 a can be preset by the valve positioner 12 , so that different opening states can be achieved to simulate the fire extinguishing agent release effect under different release states of the test fire extinguisher bottle 1 .

[0090] Furthermore, the explosive diaphragm of the fire extinguisher bottle that did not explode completely as expected on the aircraft can be installed on the diaphragm fixing portion 14 arranged on the release pipeline 12b, and the same flow limiting condition as when the fire extinguishing agent on the aircraft is released can be reproduced in the test site, and the preset opening of the release valve is set to 100% fully open, so that the release condition of the fire extinguishing agent under this condition can be accurately reproduced, so as to find the cause of the failure of the fire extinguisher bottle on the aircraft.

[0091] Although the structure and working principle of the utility model are described above in combination with the preferred embodiments, ordinary technicians in the technical field should realize that the above examples are only for illustration and do not constitute a limitation of the utility model. The utility model can be modified and varied within the spirit of the claims, and these modifications and variations will fall within the protection scope of the utility model.

Claims

1. A test fire extinguisher bottle (1), which is used to simulate different release states of a fire extinguishing agent, and is characterized in that: The test fire extinguisher bottle (1) comprises: A bottle body (10), wherein the bottle body (10) is used to store fire extinguishing materials; A filling part (11), wherein the filling part (11) fills the fire extinguishing material from the filling device (2) into the bottle body (10); a release portion (12), the release portion (12) being used to release the fire extinguishing material stored in the bottle body (10), The release portion (12) controls the opening of the release valve (12a) under the control of the control device (3) to simulate different release states of the test fire extinguisher bottle (1).

2. The test fire extinguisher bottle (1) according to claim 1, characterized in that: The filling portion (11) comprises a filling valve (11a) and a filling port (11b). The filling port (11b) is connected to an external filling device (2), and the filling valve (11a) is used to control the opening and closing of the filling path from the filling device (2) to the bottle body (10).

3. The test fire extinguisher bottle (1) according to claim 2, characterized in that: The filling portion (11) further comprises a pressure relief valve (11c), The pressure relief valve (11c) is arranged on the bottle body (10), and when the pressure in the bottle body (10) is too high, it automatically opens and releases the pressure in the bottle body (10).

4. The test fire extinguisher bottle (1) according to claim 1, characterized in that: The release part (12) includes a release valve (12a), a valve positioner (12d) and an actuator (12e). The valve positioner (12d) controls the actuator (12e) under the control of the control device (3) to adjust the valve of the release valve (12a) to a desired opening.

5. The test fire extinguisher bottle (1) according to claim 4, characterized in that: The control device (3) comprises a controller (31), a computer (32) and a vacuum pump (33). The valve opening of the release valve (12a) is set in the computer (32), and the controller (31) sends the opening and actuation signals to the valve positioner (12d), and uses the actuating cylinder (12e) to accurately control the valve opening of the release valve (12a) through the high-pressure air source from the vacuum pump (33).

6. The test fire extinguisher bottle (1) according to claim 1, characterized in that: The filling device (2) comprises a filler (21), a nitrogen bottle (22) and a fire extinguishing agent bottle (23). The filler (21) is used to fill the fire extinguishing material into the bottle body (10), and the nitrogen bottle (22) and the fire extinguishing agent bottle (23) store nitrogen and fire extinguishing agent respectively.

7. The test fire extinguisher bottle (1) according to claim 6, characterized in that: When filling the fire extinguishing material, first, the fire extinguishing agent in the fire extinguishing agent bottle (23) is filled into the bottle body (10) at a predetermined filling amount, and then, the nitrogen in the nitrogen bottle (22) is filled into the bottle body (10) at a predetermined pressure value.

8. The test fire extinguisher bottle (1) according to claim 1, characterized in that: The test fire extinguisher bottle (1) further comprises a mounting portion (13), The mounting portion (13) is arranged on the bottle body (10), and the test fire extinguisher bottle (1) is mounted on a fixing frame located at a test site through the mounting portion (13).

9. The test fire extinguisher bottle (1) according to claim 1, characterized in that: The test fire extinguisher bottle (1) further comprises a diaphragm fixing portion (14), The diaphragm fixing portion (14) is arranged adjacent to the release portion (12) and holds an explosive diaphragm for testing.

10. The test fire extinguisher bottle (1) according to any one of claims 1 to 9, characterized in that: The bottle body (10) is formed in a spherical shape.

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