Rail transit in-vehicle fire sprinkler head

Abstract

The utility model relates to rail transit fire fighting technical field, concretely relates to a rail transit is in the car fire -fighting shower head, including installation flange, main pipe and sprinkler, installation flange fixed mounting is in the main pipe, still include connecting device, connecting device includes installation disc, connecting pipe, plug rod, locking sleeve and rotation subassembly, installation disc fixed mounting is in the main pipe, plug rod rotation mounting is in the installation disc, be equipped with the slot on connecting pipe, plug rod and the slot of connecting pipe on interlock, locking sleeve and connecting pipe screw joint, locking sleeve inboard and plug rod are pasted, rotation subassembly sets up on locking sleeve, sprinkler installs on connecting pipe, through the interlock of plug rod on the main pipe and the slot of connecting pipe on, and the locking of locking sleeve to plug rod, make plug rod not with the slot under the vibration of car compartment and happen to separate, have guaranteed the assembly stability of connecting pipe.

Description

Technical Field

[0001] This utility model relates to the field of rail transit fire protection technology, and in particular to a fire sprinkler head for rail transit vehicles. Background Technology

[0002] Fire protection systems are an important means of ensuring the safety of rail transit vehicles. Fire sprinkler heads are an indispensable fire protection device in the fire protection system of rail transit vehicles. The existing fire sprinkler heads used in the overall fire protection system of rail transit vehicles have a fixed structure, which makes it inconvenient to carry out regular inspection and maintenance work during normal operation of the vehicle when there are no fire safety hazards.

[0003] Existing patent CN218793626U describes a fire sprinkler head for easy assembly and disassembly in rail transit vehicles. It includes a high-pressure connecting pipe, a mating ring fixedly installed at the upper outer end of the high-pressure connecting pipe, an insert conduit fixedly installed at the center of the bottom of the high-pressure connecting pipe, an assembly pipe movably installed on the outside of the insert conduit, a positioning block fixedly installed at the lower outer end of the insert conduit, a receiving pipe fixedly connected at the center of the bottom of the assembly pipe, a matching pipe groove pre-set at the middle of the upper end face of the assembly pipe, a sprinkler fastening pipe fixedly installed at the bottom of the receiving pipe, and a fastening nut movably installed on the outside of the sprinkler fastening pipe. This fire sprinkler head for easy assembly and disassembly in rail transit vehicles, by improving the overall installation structure to a mating insert fastening assembly structure, enables regular maintenance of the fire sprinkler head during actual use, effectively extending its overall service life and correspondingly reducing operating costs.

[0004] However, in the process of using the above method, the device enters the locking groove through the positioning insert along the alignment slot and annular groove in the assembly tube to realize the assembly connection of the insert guide tube and the assembly tube. However, due to the vibration of the train, the positioning insert is easy to detach from the locking groove, which in turn makes the assembly tube easy to detach. Utility Model Content

[0005] The purpose of this utility model is to provide a fire sprinkler head for rail transit vehicles, which solves the problem that the aforementioned device uses a positioning insert to enter the locking groove along the alignment slot and annular groove in the assembly tube to achieve the assembly connection of the insert tube and the assembly tube. However, due to the vibration of the train, the positioning insert is prone to detach from the locking groove, which in turn leads to the assembly tube being prone to detachment.

[0006] To achieve the above objectives, this utility model provides a fire sprinkler head for rail transit vehicles, including a mounting flange, a main pipe, and a sprinkler device. The mounting flange is fixedly mounted on the main pipe and also includes a connecting device. The connecting device includes a mounting plate, a connecting pipe, a plug rod, a locking sleeve, and a rotating assembly. The mounting plate is fixedly mounted on the main pipe, and the plug rod is rotatably mounted on the mounting plate. The connecting pipe has a slot, and the plug rod engages with the slot on the connecting pipe. The locking sleeve is threaded into the connecting pipe, and the inner side of the locking sleeve is in contact with the plug rod. The rotating assembly is disposed on the locking sleeve, and the sprinkler device is mounted on the connecting pipe.

[0007] The rotating assembly includes a rotating ring and a convex ball. The rotating ring is fixedly mounted on the locking sleeve, and the convex ball is fixedly mounted on the rotating ring.

[0008] The connecting pipe is also provided with a sealing ring, which is fixedly installed inside the connecting pipe and abuts against the main pipe.

[0009] The spraying device includes a nozzle and a hot-melt plug. The nozzle is threadedly connected to the connecting pipe and has multiple sets of spray holes. The hot-melt plug is installed inside the nozzle.

[0010] The nozzle is also equipped with a fan-shaped cover, which is fixedly installed on the outside of the nozzle.

[0011] This utility model discloses a fire sprinkler head for use in rail transit vehicles. In use, the main pipe is installed inside the rail transit car via the mounting flange, connecting the fire hydrant system inside the car to the main pipe. Then, the connecting pipe is held, and the insert rod is inserted into the slot on the connecting pipe. The insert rod is then rotated via the rotational engagement of the mounting plate, causing the horizontal end of the insert rod to insert into the horizontal end of the slot. Finally, the locking sleeve is screwed onto the connecting pipe, and the rotating ring is rotated via the convex ball, causing the rotating ring to drive the... The locking sleeve moves on the connecting pipe and fits against the outside of the insert rod. In the event of a fire, the heat-fused plug melts, and water in the fire-fighting pipeline system enters the sprinkler head through the main pipe and the connecting pipe, and is sprayed out through the nozzle in the sprinkler head to extinguish the fire. The engagement of the insert rod on the main pipe and the slot on the connecting pipe, as well as the locking of the insert rod by the locking sleeve, prevents the insert rod from disengaging from the slot due to vibrations in the carriage, ensuring the stable assembly of the connecting pipe. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0013] Figure 1 This is a schematic diagram of the overall structure of a fire sprinkler head for rail transit vehicles according to this utility model.

[0014] Figure 2 This is a schematic diagram of the connecting device of this utility model.

[0015] Figure 3 This is a schematic diagram of the connection between the insertion rod and the slot of this utility model.

[0016] In the diagram: 101-mounting flange, 102-main pipe, 103-mounting plate, 104-connecting pipe, 105-insertion rod, 106-locking sleeve, 107-slot, 108-rotating ring, 109-convex ball, 110-sealing ring, 111-nozzle, 112-hot melt plug, 113-spray hole, 114-fan-shaped cover. Detailed Implementation

[0017] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0018] The embodiment of this application is as follows:

[0019] Please see Figure 1-3 , Figure 1 This is a schematic diagram of the overall structure of a fire sprinkler head for rail transit vehicles according to this utility model. Figure 2 This is a schematic diagram of the connecting device of this utility model. Figure 3 This is a schematic diagram of the connection between the insertion rod and the slot of this utility model.

[0020] This utility model provides a fire sprinkler head for rail transit vehicles: including a mounting flange 101, a main pipe 102, and a sprinkler device, and also includes a connecting device. The connecting device includes a mounting plate 103, a connecting pipe 104, a plug 105, a locking sleeve 106, and a rotating assembly. The rotating assembly includes a rotating ring 108 and a convex ball 109. The connecting pipe 104 is also provided with a sealing ring 110. The sprinkler device includes a nozzle 111 and a heat-fused plug 112. The nozzle 111 is also provided with a fan-shaped cover 114. The aforementioned solution solves the problem that the aforementioned device uses a positioning plug to enter the locking groove along the alignment slot and annular groove in the assembly pipe to achieve the assembly connection of the insert tube and the assembly pipe. However, due to the vibration of the train, the positioning plug is prone to detach from the locking groove, which in turn leads to the assembly pipe being prone to detachment.

[0021] In this embodiment, the engagement of the insertion rod 105 on the main tube 102 and the slot 107 on the connecting tube 104, as well as the locking sleeve 106 locking the insertion rod 105, ensures that the insertion rod 105 will not disengage from the slot 107 under the vibration of the carriage, thus ensuring the stable assembly of the connecting tube 104.

[0022] The mounting plate 103 is fixedly mounted on the main pipe 102, the insertion rod 105 is rotatably mounted on the mounting plate 103, the connecting pipe 104 has a slot 107, the insertion rod 105 engages with the slot 107 on the connecting pipe 104, the locking sleeve 106 is threadedly engaged with the connecting pipe 104, the inner side of the locking sleeve 106 is in contact with the insertion rod 105, the rotating assembly is disposed on the locking sleeve 106, the spraying device is mounted on the connecting pipe 104, the mounting plate 103 is annularly disposed at the bottom end of the main pipe 102, the insertion rod 105 has an L-shaped structure, and the slot 107 on the connecting pipe 104 also has an L-shaped structure. The structure includes a plug rod 105 and a slot 107 that are size-matched. The locking sleeve 106 has threads on its inner side, and the connecting tube 104 also has threads on its outer side. By inserting the plug rod 105 into the slot 107 on the connecting tube 104 and rotating the plug rod 105, the horizontal end of the plug rod 105 is inserted into the horizontal end of the slot 107. The rotating component drives the rotation of the locking sleeve 106, causing the locking sleeve 106 to move upward along the connecting tube 104 and fit against the outer side of the plug rod 105. This prevents the plug rod 105 from disengaging from the slot 107 under the vibration of the carriage, ensuring the stable assembly of the connecting tube 104.

[0023] Secondly, the rotating ring 108 is fixedly installed on the locking sleeve 106, and the convex ball 109 is fixedly installed on the rotating ring 108. The rotating ring 108 is welded to the outside of the locking sleeve 106, and the convex ball 109 is arranged in a ring on the outside of the rotating ring 108. The rotating ring 108 is driven to rotate by the convex ball 109, so that the rotating ring 108 drives the locking sleeve 106 to rotate.

[0024] Furthermore, the sealing ring 110 is fixedly installed inside the connecting pipe 104. The sealing ring 110 abuts against the main pipe 102 and is adhered to the inside of the connecting pipe 104. The sealing ring 110 ensures the sealing between the connecting pipe 104 and the main pipe 102.

[0025] Furthermore, the nozzle 111 is threadedly connected to the connecting pipe 104, and the nozzle 111 is provided with multiple sets of spray holes 113; the thermoplastic plug 112 is installed inside the nozzle 111, the nozzle 111 has a cylindrical structure, the nozzle 111 has a hollow structure inside, and the nozzle 111 has spray holes 113 on both the cylindrical surface and the bottom end. The thermoplastic plug 112 is made of tin-bismuth (Sn-Bi) alloy. In the event of a fire, the thermoplastic plug 112 melts at high temperature, causing the water in the connecting pipe 104 to be sprayed out through the nozzle 111 to extinguish the fire.

[0026] Finally, the fan-shaped cover 114 is fixedly installed on the outside of the nozzle 111. The fan-shaped cover 114 is fixed to the outside of the nozzle 111 by screws. With the setting of the fan-shaped cover 114, the water sprayed from the nozzle hole 113 on the cylindrical surface of the nozzle 111 can be sprayed out in a fan shape, which is more concentrated.

[0027] In this embodiment, during use, the main pipe 102 is installed inside the rail transit car via the mounting flange 101, connecting the fire-fighting piping system inside the car to the main pipe 102. Then, the connecting pipe 104 is held, and the insertion rod 105 is inserted into the slot 107 on the connecting pipe 104. Subsequently, through the rotational engagement of the insertion rod 105 with the mounting plate 103, the insertion rod 105 is rotated, causing its horizontal end to insert into the horizontal end of the slot 107. Then, the locking sleeve 106 is screwed onto the connecting pipe 104, and the rotating ring 108 is rotated via the convex ball 109, causing the rotating ring 108 to drive the locking sleeve 106, thus... The locking sleeve 106 moves on the connecting pipe 104 and fits against the outside of the insert rod 105. When a fire occurs, the heat-fused plug 112 melts, and the water in the fire-fighting pipeline system enters the nozzle 111 through the main pipe 102 and the connecting pipe 104, and is sprayed out through the nozzle hole 113 in the nozzle 111 to extinguish the fire. Thus, the engagement of the insert rod 105 on the main pipe 102 and the slot 107 on the connecting pipe 104, as well as the locking of the insert rod 105 by the locking sleeve 106, prevents the insert rod 105 from disengaging from the slot 107 under the vibration of the carriage, ensuring the stable assembly of the connecting pipe 104.

[0028] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A fire sprinkler head for rail transit vehicles, comprising a mounting flange, a main pipe, and a sprinkler device, wherein the mounting flange is fixedly mounted on the main pipe, characterized in that, It also includes a connecting device; The connecting device includes a mounting plate, a connecting pipe, a plug rod, a locking sleeve, and a rotating assembly. The mounting plate is fixedly mounted on the main pipe, the plug rod is rotatably mounted on the mounting plate, the connecting pipe has a slot, the plug rod engages with the slot on the connecting pipe, the locking sleeve is threaded with the connecting pipe, the inner side of the locking sleeve is in contact with the plug rod, the rotating assembly is disposed on the locking sleeve, and the spraying device is mounted on the connecting pipe.

2. The fire sprinkler head for rail transit vehicles as described in claim 1, characterized in that, The rotating assembly includes a rotating ring and a convex ball. The rotating ring is fixedly mounted on the locking sleeve, and the convex ball is fixedly mounted on the rotating ring.

3. The fire sprinkler head for rail transit vehicles as described in claim 1, characterized in that, The connecting pipe is also provided with a sealing ring, which is fixedly installed inside the connecting pipe and abuts against the main pipe.

4. The fire sprinkler head for rail transit vehicles as described in claim 1, characterized in that, The spraying device includes a nozzle and a hot-melt plug. The nozzle is threadedly connected to the connecting pipe and has multiple sets of spray holes. The hot-melt plug is installed inside the nozzle.

5. The fire sprinkler head for rail transit vehicles as described in claim 4, characterized in that, The nozzle is also equipped with a fan-shaped cover, which is fixedly installed on the outside of the nozzle.

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