Pressure-relief tail end connector structure of fire-fighting appliance

Abstract

A pressure-relief tail end connector structure of a fire-fighting appliance comprises a connector, the upper end and the lower end of the connector are communicated connecting ends respectively, a pressure relief main body is connected to the connector, a pressure relief end communicated with the interior of the connector is arranged on the pressure relief main body, and a pressure relief channel is formed in the pressure relief main body from the connecting ends to the pressure relief end. A pressure relief piece is detachably connected into the pressure relief channel, a pressure relief groove is formed in the front end face of the pressure relief piece, and the pressure relief groove is damaged to form a pressure relief structure which is communicated with the pressure relief channel and rapidly relieves pressure through the pressure relief channel when the preset air pressure is exceeded. The pressure relief device is reasonable and compact in structure, the connector is used as a connecting piece to be rapidly connected into an original fire-fighting appliance, low-cost rapid installation and replacement are achieved, the pressure relief channel in the pressure relief main body penetrates through the connector and the pressure relief end, and the pressure relief piece is arranged in the pressure relief channel for sealing and partitioning; on one hand, the pressure relief piece has reliable pressure bearing performance, and on the other hand, the pressure relief piece can be matched with the pressure relief groove to form a crevasse to achieve the purpose of quick pressure relief when preset pressure is exceeded.

Description

Technical Field

[0001] The present invention relates to the technical field of fire fighting, and in particular to a fire fighting apparatus, and specifically to a pressure-relieving terminal connector structure of the fire fighting apparatus. Background Art

[0002] At present, with the large-scale urbanization, the population has also shown a corresponding agglomeration effect. Once a fire occurs in a densely populated area, the damage caused is undoubtedly huge. As a result, firefighting work has become more and more important. In addition to the traditional fire brigade dealing with large fires, fires generally develop rapidly in a smaller area. If they can be quickly responded to and extinguished in the early stage, subsequent losses can be reduced.

[0003] This kind of early destruction not only requires someone to quickly discover it, but also requires someone to get the fire-fighting tools and use them in the first place, so the popularization of fire-fighting equipment is very important. Generally, the inside of fire-fighting equipment needs to be pressurized to ensure the rapid spraying of fire-fighting materials. While pressurization helps fire-fighting equipment to achieve its functions, it may also cause danger if the internal pressure is out of control. When the internal pressure increases out of control and is not released in time, an explosion will occur, which will cause great damage to the user and the surrounding environment. If there is a device that automatically releases pressure when the internal pressure is out of control to ensure the rapid release of pressure, the safety and reliability of fire-fighting equipment will be greatly improved. However, there are still many existing fire-fighting equipment that do not have a pressure relief structure, which will pose a safety hazard. Due to the huge number of existing fire-fighting equipment, it is impossible to eliminate them all at once. This cost is too high and is not in line with the interests. Now there is a need for a structure that can achieve active pressure relief of fire-fighting equipment by replacing parts without eliminating existing fire-fighting equipment to achieve the needs of reducing replacement costs and improving safety of existing fire-fighting equipment. Summary of the invention

[0004] The present invention aims to solve the above problems existing in the prior art and provide a pressure-relieving end connector structure of a fire-fighting apparatus, so as to solve the problem that the existing fire-fighting apparatus cannot actively relieve pressure and has a huge cost for elimination and replacement.

[0005] The present invention adopts a technical solution to solve its technical problems: the pressure-relief end connector structure of the fire-fighting apparatus comprises a connector, the upper and lower ends of the connector are respectively connected connecting ends, the connecting ends are respectively detachably connected to the fire-fighting material storage device and the injection outlet device of the fire-fighting apparatus, the connector is connected to a pressure relief body, the pressure relief body is provided with a pressure relief end connected to the inside of the connector, a pressure relief channel is formed in the pressure relief body from the connecting end to the pressure relief end, a pressure relief plate made of alloy material is detachably connected in the pressure relief channel, the pressure relief plate is located in the pressure relief channel to form a closed structure of the pressure relief channel that seals and separates the pressure relief channel, the front end face of the pressure relief plate is an end face subjected to pressure impact and is provided with a pressure relief groove, the pressure relief groove is destroyed when the preset air pressure is exceeded to form a pressure relief structure that connects the pressure relief channel and utilizes the pressure relief channel to quickly relieve pressure. After such arrangement, the connector has a connecting end portion so that the connector can be connected to the fire extinguishing material storage device and the injection outlet device of the fire-fighting apparatus, so as to achieve quick installation and replacement, and effectively reduce the replacement cost; and the pressure relief channel in the pressure relief body allows the pressure relief end to be connected with the internal pressure of the connector, and the pressure relief plate is detachably connected in the pressure relief channel. When the pressure in the pressure relief channel close to the connecting end increases, the internal air pressure acts on the pressure relief groove so that the pressure relief groove is torn out and then penetrates the entire pressure relief channel to achieve the pressure relief target. The pressure relief plate made of alloy material has reliable pressure-bearing performance on the one hand, and on the other hand, it can cooperate with the pressure relief groove to form a breach when the preset pressure is exceeded. The pressure is automatically relieved from the pressure relief end by using the pressure size, so as to ensure the normal operation of the internal pressure within a safe range, and the pressure relief plate can be used to quickly relieve the pressure when the internal pressure exceeds the standard, so as to achieve safety, reliability and efficiency.

[0006] As a further improvement of the present invention, the pressure relief end is detachably connected with a pressing block, and the pressing end of the pressing block avoids the rupture position of the pressure relief groove and presses on the outer ring position of the back of the pressure relief plate, so that the impacted end face of the pressure relief plate is sealed and pressed on the inner wall of the pressure relief channel to form a pressure relief plate sealing area to separate the pressure relief channel structure. The pressing block is provided with a pressure relief hole, and the pressure relief hole connects the pressure relief channel with the outside. The pressure relief plate is sealed and fixed in the pressure relief channel by the pressing block. On the one hand, the sealing and fixing effect of the pressure relief plate can be guaranteed, and it can be detached and replaced at any time. It can continue to be used by only removing the pressing block and replacing the pressure relief plate, which effectively reduces the cost of use and achieves cost reduction and efficiency improvement.

[0007] As a further improvement of the present invention, the pressure relief groove is a closed-loop groove structure, the cross section of the pressure relief groove is a V-shaped structure, and the groove surfaces on both sides of the pressure relief groove are respectively at an angle and perpendicular to the radial surface of the pressure relief plate. After such a setting, the V-shaped structure of the pressure relief groove can facilitate the effect of the internal pressure, and the internal air pressure can better act on the groove surfaces on both sides of the pressure relief groove to tear the pressure relief groove to form a breach, so as to achieve rapid pressure relief and ensure the pressure relief effect.

[0008] As a further improvement of the present invention, the pressure relief channel has a small front and large rear structure in the pressure relief direction, and the pressure relief sheet is located in the rear enlarged area and its impacted end face is close to the junction of the large and small pressure relief channels. After such arrangement, the small front and large rear structure of the pressure relief channel is conducive to forming pressure on the pressure relief groove at the front end face of the pressure relief sheet, while using a larger pressure relief channel at the rear end face of the pressure relief sheet to achieve rapid pressure relief, thereby improving the success rate and efficiency of pressure relief.

[0009] As a further improvement of the present invention, a protrusion close to the pressure relief groove is provided on the front end surface of the pressure relief sheet, and the top of the protrusion is close to the junction of the large and small pressure relief channels to form a gathering and squeezing structure that guides the air pressure to the pressure relief groove. The protrusion is close to the junction of the large and small pressure relief channels, so that the air pressure is guided to the pressure relief groove to form a gathering and squeezing effect on the pressure relief groove, thereby increasing the destructive effect of the internal air pressure on the pressure relief groove to achieve pressure relief.

[0010] As a further improvement of the present invention, a pressure gauge is connected to the connector, and the pressure gauge is connected to the inside of the connector. The pressure gauge can directly observe the internal pressure information, whether the pressure is too high and evacuation is required or the pressure is within a controllable range and the pressure relief operation can continue, which can provide a basis for on-the-spot decision-making.

[0011] As a further improvement of the present invention, a preventive device for preventing the failure of the pressure relief plate is provided on the pressure relief body, and the preventive device includes a puncture rod located in the pressure relief channel and movable in its axial direction, the front end of the puncture rod is a puncture end with a pointed structure and facing the pressure relief plate, the rear end of the puncture rod passes through the pressure relief end and is exposed to form a top pressure end, and a safety pin that radially penetrates the puncture rod is detachably connected to the pressure relief body and forms a limiting structure that limits the movement of the puncture rod. The function of the preventive device is to use the puncture rod to puncture the pressure relief plate to quickly release pressure when the pressure relief plate fails, and to serve as a bottom-up structure to further improve the safety and reliability of pressure relief.

[0012] As a further improvement of the present invention, a venting groove is provided on the conical surface of the puncture end to connect the inside and outside of the pressure relief plate during puncture. With this arrangement, when the puncture end of the puncture rod punctures the pressure relief plate, the internal air pressure will be quickly released first along the venting groove, avoiding the time wasted in the process of pulling out the puncture end after puncture, and effectively improving the pressure relief efficiency and effect.

[0013] The beneficial effects of the present invention are as follows: the structure of the present invention is reasonable and compact, and the connecting end connecting head can be connected to the fire extinguishing material storage device and the injection outlet device of the fire-fighting equipment through the connecting end connecting head, so as to achieve low-cost and fast installation and replacement; and the pressure relief main body utilizes a pressure relief channel to penetrate the connecting head and the pressure relief end, and a pressure relief plate is arranged in the pressure relief channel for sealing and separation, and the pressure relief plate has reliable pressure-bearing performance on the one hand, and can cooperate with the pressure relief groove to form a rupture to achieve the purpose of rapid pressure relief when the preset pressure is exceeded; and the prevention device can utilize the puncture rod to pierce the pressure relief plate to quickly relieve pressure when the pressure relief plate fails, and serve as a bottom-up structure to further improve the safety and reliability of pressure relief, so as to achieve safety and reliability, good use effect, and suitable for promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention;

[0015] Figure 2 It is a side view structural schematic diagram of the present invention;

[0016] Figure 3 for Figure 2 Cross-sectional view in the BB direction;

[0017] Figure 4 This is a schematic diagram of the structure of the preventive device.

[0018] Explanation of the reference numerals: connector 1, connecting end 1-1, pressure relief body 2, pressure relief end 2-1, pressure relief sheet 3, pressure relief groove 3-1, protrusion 3-2, top pressure block 4, pressure relief hole 4-1, piercing rod 5, safety pin 6, pressure gauge 7. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with the accompanying drawings:

[0020] Referring to the accompanying drawings: the pressure-relief end connector structure of the fire-fighting apparatus in this embodiment includes a connector 1, the upper and lower ends of the connector 1 are connected connecting ends 1-1 respectively, and the connecting ends 1-1 are detachably connected to the fire-fighting material storage device and the injection outlet device of the fire-fighting apparatus respectively, and the connector 1 is connected to a pressure relief body 2, and the pressure relief body 2 is provided with a pressure relief end 2-1 connected to the inside of the connector 1, and a pressure relief channel is formed in the pressure relief body 2 from the connecting end to the pressure relief end 2-1, and a pressure relief plate 3 made of alloy material is detachably connected in the pressure relief channel, and the pressure relief plate 3 is located in the pressure relief channel to form a closed structure of a sealed area separating the pressure relief channel, and the front end face of the pressure relief plate 3 is an end face subjected to pressure impact and is provided with a pressure relief groove 3-1, and the pressure relief groove 3-1 is destroyed when the preset air pressure is exceeded to form a pressure relief structure that connects the pressure relief channel and uses the pressure relief channel to quickly relieve pressure.

[0021] The pressure relief end 2-1 is detachably connected with a pressing block 4, and the pressing end of the pressing block 4 avoids the rupture position of the pressure relief groove 3-1 and presses on the outer circle position on the back side of the pressure relief plate 3, so that the impacted end face of the pressure relief plate 3 is sealed and pressed on the inner wall of the pressure relief channel to form a pressure relief plate 3 sealing area to separate the pressure relief channel structure, and a pressure relief hole 4-1 is provided on the pressing block 4, and the pressure relief hole 4-1 connects the pressure relief channel with the outside.

[0022] The pressure relief groove 3 - 1 is a closed-loop groove structure, and the cross section of the pressure relief groove 3 - 1 is a V-shaped structure. The groove surfaces on both sides of the pressure relief groove 3 - 1 form an angle and a perpendicular relationship with the radial surface of the pressure relief plate 3 respectively.

[0023] Preferably, the pressure relief channel is a structure that is small in the front and large in the back in the pressure relief direction. The pressure relief plate 3 is located in the rear enlarged area and its impacted end face is close to the junction of the large and small pressure relief channels.

[0024] A protrusion 3-2 close to the pressure relief groove 3-1 is provided on the front end surface of the pressure relief plate 3, and the top of the protrusion 3-2 is close to the junction of the large and small pressure relief channels to form a gathering and extrusion structure that guides the air pressure to the pressure relief groove 3-1.

[0025] Preferably, a pressure gauge 7 is connected to the connector 1 , and the pressure gauge 7 is communicated with the interior of the connector 1 .

[0026] The pressure relief body 2 is provided with a preventive device for preventing the pressure relief piece 3 from failing. The preventive device includes a puncture rod 5 located in the pressure relief channel and movable in its axial direction. The front end of the puncture rod 5 is a puncture end with a pointed structure and directly facing the pressure relief piece 3. The rear end of the puncture rod 5 passes through the pressure relief end 2-1 and is exposed to form a top pressure end. The pressure relief body 2 is detachably connected with a safety pin 6 that radially penetrates the puncture rod 5 and forms a limiting structure that limits the movement of the puncture rod 5. Preferably, a venting groove that connects the inside and outside of the pressure relief piece 3 during puncture is provided on the conical surface of the puncture end.

[0027] Although the present invention has been shown and described with reference to preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A pressure-relief end connector structure of a fire-fighting apparatus, comprising a connector (1), wherein the upper and lower ends of the connector (1) are connected to each other as connecting ends (1-1), and wherein: The connecting end portion (1-1) is detachably connected to a fire extinguishing material storage device and a spray outlet device of the fire-fighting apparatus, respectively; the connecting head (1) is connected to a pressure relief body (2); the pressure relief body (2) is provided with a pressure relief end (2-1) connected to the inside of the connecting head (1); a pressure relief channel is formed in the pressure relief body (2) from the connecting end to the pressure relief end (2-1); a pressure relief plate (3) made of an alloy material is detachably connected in the pressure relief channel; the pressure relief plate (3) is located in the pressure relief channel to form a closed structure for sealing and isolating the pressure relief channel; the front end face of the pressure relief plate (3) is an end face subjected to pressure impact and is provided with a pressure relief groove (3-1); the pressure relief groove (3-1) is destroyed when the air pressure exceeds a preset value to form a pressure relief structure for connecting the pressure relief channel and using the pressure relief channel to quickly relieve pressure.

2. The pressure-relief end connector structure of fire-fighting equipment according to claim 1, characterized in that: The pressure relief end (2-1) is detachably connected to a pressing block (4), and the pressing end of the pressing block (4) avoids the rupture position of the pressure relief groove (3-1) and presses on the outer circle position of the back side of the pressure relief plate (3), so that the impacted end face of the pressure relief plate (3) is sealed and pressed on the inner wall of the pressure relief channel to form a pressure relief plate (3) sealing zone separation pressure relief channel structure, and the pressing block (4) is provided with a pressure relief hole (4-1), and the pressure relief hole (4-1) enables the pressure relief channel to communicate with the outside.

3. The pressure-relief end connector structure of fire-fighting equipment according to claim 1, characterized in that: The pressure relief groove (3-1) is a closed-loop groove structure, the cross section of the pressure relief groove (3-1) is a V-shaped structure, and the groove surfaces on both sides of the pressure relief groove (3-1) are respectively at an angle and perpendicular to the radial surface of the pressure relief plate (3).

4. The pressure-relief end connector structure of fire-fighting equipment according to claim 1, characterized in that: The pressure relief channel has a structure that is smaller at the front and larger at the rear in terms of the pressure relief direction.

5. The pressure-relief end connector structure of fire-fighting equipment according to claim 1, characterized in that: The pressure relief plate (3) is located in the rear enlarged area and its impacted end surface is close to the junction of the large and small pressure relief channels.

6. The pressure-relief end connector structure of fire-fighting equipment according to claim 5, characterized in that: The front end surface of the pressure relief sheet (3) is provided with a protrusion (3-2) close to the pressure relief groove (3-1), and the top of the protrusion (3-2) is close to the junction of the large and small pressure relief channels to form a gathering and extrusion structure that guides the air pressure to the pressure relief groove (3-1).

7. The pressure-relief end connector structure of fire-fighting equipment according to claim 1 or 2, characterized in that: The connector (1) is connected to a pressure gauge (7), and the pressure gauge (7) is in communication with the interior of the connector (1).

8. The pressure-relief end connector structure of fire-fighting equipment according to claim 7, characterized in that: The pressure relief body (2) is provided with a preventive device for preventing the pressure relief plate (3) from failing. The preventive device comprises a puncture rod (5) located in the pressure relief channel and movable in its axial direction. The front end of the puncture rod (5) is a puncture end with a pointed structure and directly faces the pressure relief plate (3). The rear end of the puncture rod (5) passes through the pressure relief end (2-1) and is exposed to form a top pressure end. The pressure relief body (2) is detachably connected with a safety pin (6) which radially penetrates the puncture rod (5) and forms a limiting structure for limiting the movement of the puncture rod (5).

9. The pressure-relief end connector structure of fire-fighting equipment according to claim 8, characterized in that: A venting groove is provided on the conical surface of the puncture end for connecting the inside and outside of the pressure relief plate (3) during puncture.

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