CN220850896U

CN220850896U - Explosion venting device for horizontal pipe

Info

Publication number: CN220850896U
Application number: CN202322417772.2U
Authority: CN
Inventors: 徐倩霏; 徐利; 吕纪永; 邢峰; 苏存平
Original assignee: Changshu Longteng Special Steel Co Ltd
Current assignee: Changshu Longteng Special Steel Co Ltd
Priority date: 2023-09-06
Filing date: 2023-09-06
Publication date: 2024-04-26
Anticipated expiration: 2033-09-06

Abstract

The utility model discloses a horizontal pipe explosion venting device, which comprises an air inlet pipe and an explosion venting pipe, wherein one sides of the air inlet pipe and the explosion venting pipe are obliquely arranged and are communicated with each other, the upper end of the explosion venting pipe is provided with an explosion venting port, the lower end of the explosion venting pipe is provided with an air outlet, a gland assembly is hinged at the explosion venting port, the outer side of the explosion venting pipe is provided with a limiting piece, the gland assembly is hinged with the limiting piece, and the overturning angle of the gland assembly is smaller than 90 degrees; the upper side of the air outlet of the air inlet pipe is hinged with a guide plate, the guide plate is an arc plate which is horizontally arranged, an explosion-proof membrane is arranged between the guide plate and the gland assembly, and the explosion-proof membrane is transversely arranged in a channel between the air outlet of the air inlet pipe and the explosion venting port. According to the utility model, the flow direction of dust-containing gas entering the explosion venting device from the gas inlet pipe can be changed through the guide plate, so that the gas flow direction is changed from the oblique direction to the downward direction, the explosion-proof membrane can play a role in sealing, and the limiting part can limit the overturning angle of the gland so that the gland can automatically overturn downwards to return to the original position when the gland is not stressed.

Description

Explosion venting device for horizontal pipe

Technical Field

The utility model relates to the technical field of dust removing equipment, in particular to a horizontal pipe explosion venting device.

Background

Dust needs to be used in the dust remover when removing dust, and the dust can get into the dust remover through the pipeline, and the dust remover can filter the dust and remove dust, and the opposite side of dust remover can be connected with the fan, and the fan can outwards bleed in to the dust remover for form the negative pressure in the dust remover, then make also can form the negative pressure in the pipeline of being connected with the dust remover, utilize the negative pressure to take out the dust of dust removal point in the dust remover. Because the dust is combustible, when open fire enters or accumulation occurs, the dust in the dust remover and the dust removing pipeline can be burnt or exploded. Therefore, for safety, an explosion venting device is usually arranged on the horizontal pipeline, and when explosion occurs in the dust removing pipeline, the device can prevent the explosion pressure from continuing to wave forward; when explosion occurs in the dust remover, the explosion pressure can be released for the first time through the explosion venting device of the dust remover body, but if the explosion pressure is not released, the explosion pressure can be released again, so that the continuous forward wave is prevented. In particular, in a large-scale production workshop, a plurality of dust collectors are connected in parallel and then connected through pipelines, if one dust collector has a problem, all dust collectors can be involved, and therefore the explosion venting device is particularly important.

The whole structure of the existing explosion venting device is generally a herringbone structure formed by two pipelines, the upper end of the explosion venting device is provided with an explosion venting port, and a gland is generally arranged at the explosion venting port. The explosion venting device used at present has the following defects: firstly, due to the structural limitation of the explosion venting device, a corner exists between two pipelines of the explosion venting device, which is not beneficial to smooth dust passing; secondly, when negative pressure is formed in the explosion venting device, external air enters the explosion venting device because the gland of the explosion venting port is not sealed with the pipeline, so that the subsequent dust removing operation is affected; thirdly, when the pressure in the pipeline is overlarge, the pressure cover of the explosion venting port is impacted, the pressure cover is turned over and opened, so that the pressure release effect is achieved, but the pressure cover cannot automatically return to the original position after being turned over, and the explosion venting port needs to be plugged again by manually returning the pressure cover to the original position.

Disclosure of utility model

The utility model aims to solve the problems, designs a horizontal pipe explosion venting device, and solves the problems that the existing explosion venting device is poor in tightness, a gland cannot return to the original position automatically and the like.

The horizontal pipe explosion venting device comprises an air inlet pipe and an explosion venting pipe, wherein one sides of the air inlet pipe and the explosion venting pipe are obliquely arranged and are mutually communicated, the upper end of the explosion venting pipe is an explosion venting port, the lower end of the explosion venting pipe is an air outlet, a gland assembly is hinged at the explosion venting port, a limiting piece is arranged on the outer side of the explosion venting pipe, the gland assembly is hinged with the limiting piece, and the overturning angle of the gland assembly is smaller than 90 degrees;

The upper side of intake pipe gas outlet department articulates there is the deflector, the deflector is the arc that the level was placed, the deflector with be provided with the rupture membrane between the gland subassembly, the transversal setting of rupture membrane is in the gas outlet of intake pipe and let out the passageway between the mouth of exploding.

Preferably, the tangential direction of the end of the guide plate far away from the air inlet pipe is downward.

Preferably, the gland assembly comprises a gland and a connecting rod, wherein the connecting rod is horizontally fixed at the top of the gland, and one end of the connecting rod, which is outwards elongated along the radial direction of the gland, is hinged with the limiting piece.

Preferably, the limiting piece is provided with a limiting groove and first penetrating holes, the first penetrating holes are symmetrically distributed on two sides of the limiting piece and are communicated with the limiting groove, and pin shafts are arranged in the first penetrating holes;

the hinge end of the connecting rod is provided with a second through jack, the pin shaft sequentially penetrates through the first through jack and the second through jack, and the connecting rod is rotationally connected with the pin shaft.

Preferably, the distance from the hole center of the second through jack to the end face of the hinged end of the connecting rod is larger than the distance from the hole center of the first through jack to the bottom face of the limit groove.

Preferably, a blocking block for limiting the rotation angle of the connecting rod is arranged in the middle of the limiting groove.

Preferably, the connecting rod is provided with the balancing weight away from articulated one end.

Preferably, the total weight of the gland assembly and counterweight does not exceed the maximum pressure that the rupture disc can withstand.

Preferably, the air inlet of the air inlet pipe and the air outlet of the explosion venting pipe are both provided with mounting flanges.

Compared with the prior art, the beneficial effects are that:

The utility model has the advantages of simple structure, good sealing performance and the like, when negative pressure is formed in the explosion venting device, the flow direction of dust-containing gas entering the explosion venting device from the gas inlet pipe can be changed through the arc-shaped guide plate, so that the gas flow direction is changed from oblique upwards to downwards, the gas is beneficial to smoothly flowing into the dust remover, the explosion-proof membrane can play a role in sealing, external air is prevented from entering the explosion venting device along a gap between the gland and the explosion venting pipe, when spontaneous combustion occurs in the dust remover, the pressure can be transferred into the explosion venting device through the pipeline, the guide plate can be overturned upwards when the pressure in the explosion venting device is caused to rise to a certain value, meanwhile, the explosion-proof membrane is broken, the gland can be stressed upwards to play a role in decompression, the limiting piece can limit the overturning angle of the gland, and the overturning angle of the gland is ensured not to exceed 90 degrees, so that the gland can be overturned downwards to the original position automatically when the pressure is not stressed.

Drawings

FIG. 1 is a schematic cross-sectional structural view of an explosion venting apparatus;

FIG. 2 is a schematic view showing the overall structure of the explosion venting apparatus in example 1;

fig. 3 is a schematic view of the structure of the pressure cap assembly in embodiment 1;

FIG. 4 is a schematic view of the structure of the stopper in embodiment 1;

fig. 5 is a schematic view of the structure at the explosion venting port of the explosion venting tube in example 1;

fig. 6 is a schematic view of the structure of the explosion venting port of the explosion venting tube in example 2.

In the figure, 1, an air inlet pipe; 2. explosion venting pipe; 3. a gland assembly; 31. a gland; 32. a connecting rod; 321. a second through jack; 4. a limiting piece; 41. a limit groove; 42. a first through jack; 5. a pin shaft; 6. balancing weight; 7. a mounting flange; 8. an explosion-proof membrane; 9. a guide plate; 10. and a blocking piece.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

As shown in fig. 1 and 2, a horizontal pipe explosion venting device mainly comprises an air inlet pipe 1 and an explosion venting pipe 2, wherein the air inlet pipe 1 is arranged on one side of the explosion venting pipe 2, an air outlet of the air inlet pipe 1 is communicated with the explosion venting pipe 2, the air inlet pipe 1 and the explosion venting pipe 2 form a herringbone structure, the upper end of the explosion venting pipe 2 is an explosion venting port, the lower end of the explosion venting pipe is an air outlet, mounting flanges 7 are arranged at the air inlet of the air inlet pipe 1 and the air outlet of the explosion venting pipe 2, the air inlet pipe 1 is connected with a dust pipeline through the mounting flanges 7, the explosion venting pipe 2 is connected with the pipeline on a dust remover through the mounting flanges 7, and air containing dust enters the explosion venting device along the air inlet pipe 1 and then enters the dust remover from the air outlet of the explosion venting pipe 2.

Referring to fig. 2 and 3, a gland assembly 3 is hinged at the explosion venting port of the explosion venting pipe 2, the gland assembly 3 mainly comprises a connecting rod 32 and a gland 31, a limiting piece 4 is arranged on the outer side of the explosion venting pipe 2, the connecting rod 32 is transversely arranged on the top of the gland 31 and fixedly connected with the gland 31, and one end of the connecting rod 32 extends outwards along the radial direction of the gland 31 and is rotationally connected with the limiting piece 4 through a pin shaft 5.

Referring to fig. 4, a U-shaped limiting groove 41 is formed in the limiting member 4, first insertion holes 42 penetrating through the limiting groove 41 are formed in two sides of the limiting member 4, second insertion holes 321 are formed in the hinge end of the connecting rod 32, the pin shaft 5 sequentially penetrates through the first insertion holes 42 in the limiting member 4 and the second insertion holes 321 in the connecting rod 32, the connecting rod 32 and the limiting member 4, the connecting rod 32 can rotate relative to the limiting member 4, when the gland 31 bears pressure from bottom to top, the connecting rod 32 can be turned upwards, and at the moment, the connecting rod 32 can rotate along the pin shaft 5.

Referring to fig. 5, in order to prevent the rotation angle of the gland 31 from exceeding 90 °, we have limited the length of the hinged end of the connecting rod 32 in this embodiment, because if the rotation angle of the gland 31 exceeds 90 °, it may not be able to automatically turn down and return to its original position. The distance from the hole center of the second through-hole 321 to the end face of the hinged end of the connecting rod 32 is L1, the distance from the hole center of the first through-hole 42 to the bottom face of the limiting groove 41 is L2, and L1 is greater than L2, so that when the connecting rod 32 rotates, the extending end of the hinged end of the connecting rod 32 collides with the limiting piece 4 and cannot continue to rotate downwards, so that the rotating angle of the gland 31 cannot exceed 90 degrees, the gland 31 is always in an inclined state, and the gland 31 automatically rotates downwards to return to the original position when the gland 31 is not stressed, and the gland 31 does not need to be manually restored to the original position.

In order to ensure that the gland 31 can return to the original position smoothly, a balancing weight 6 is arranged at one end of the connecting rod 32 far away from the limiting piece 4, so that when the gland 31 is turned over under the stress, the whole gravity center of the gland assembly 3 can lean on the right due to the balancing weight 6, and the gland 31 can be turned down without the stress.

As shown in fig. 1, a guide plate 9 is hinged on the upper side of the air outlet of the air inlet pipe 1, the guide plate 9 is an arc plate, the initial state is horizontal, an explosion-proof membrane 8 is transversely arranged in a channel between the air outlet of the air inlet pipe 1 and the explosion venting port of the explosion venting pipe 2, the explosion-proof membrane 8 is positioned between the guide plate 9 and a gland 31, wherein the windward side of the guide plate 9 is an arc surface, and in the horizontal state, the tangential direction of one end of the guide plate 9 away from the air inlet pipe is downward, so that dust-containing air obliquely enters the explosion venting pipe 2 through the air inlet pipe 1, contacts with the guide plate 9, and changes the flowing direction of the dust-containing air from the oblique upward direction to the downward direction under the action of the guide plate 9, and flows into the dust remover from the explosion venting port.

Because the explosion venting device is internally provided with negative pressure, dust enters the explosion venting pipe 2 through the air inlet pipe 1 and then enters the dust remover, and a gap exists between the gland 31 and the explosion venting opening, the explosion-proof membrane 8 can play a role in sealing, and external air is prevented from entering the explosion venting device.

If the dust stored in the dust remover is spontaneously burned, the pressure in the dust remover becomes large, and the pressure is reversely transmitted to the explosion venting device through the pipeline. When the pressure of the explosion venting device rises to exceed a set value, the guide plate 9 can be stressed to be overturned upwards, the explosion-proof membrane 8 can be broken at the same time, then the explosion-proof membrane can impact the gland 31, and the gland 31 can be overturned upwards to release pressure. It should be noted that the total weight of the gland assembly 3 and the counterweight 6 does not exceed the maximum pressure that the explosion-proof membrane 8 can bear, so that the gland assembly 3 can be turned upwards once the explosion-proof membrane 8 is broken, the pressure in the pipeline is prevented from being excessively high to cause explosion, and if the total weight of the gland assembly 3 and the counterweight 6 is excessively high, the explosion-proof membrane 8 is broken, but the pressure is insufficient to jack the gland 31, so that the purpose of pressure relief cannot be achieved.

Example 2

As shown in fig. 6, the difference between this embodiment and embodiment 1 is that a blocking block 10 is provided in the middle of the limit groove 41 of the limit member 4, and the blocking block 10 can limit the rotation angle of the connecting rod 32, so as to limit the turning angle of the gland 31, and there is no particular limitation on the length of the connecting rod 32, and when the connecting rod 32 is forced to rotate upwards, the hinged end of the connecting rod 32 will rotate into the limit groove 41 to collide with the blocking block 10, and the rotation angle of the connecting rod 32 will be limited by the blocking block 10 to not exceed 90 °, so that when the gland 31 is not forced, the gland 31 will also return to the original position automatically.

The above technical solution only represents the preferred technical solution of the present utility model, and some changes that may be made by those skilled in the art to some parts of the technical solution represent the principles of the present utility model, and the technical solution falls within the scope of the present utility model.

Claims

1. The utility model provides a horizontal pipe lets out and explodes device, includes intake pipe (1) and lets out and explodes pipe (2), intake pipe (1) is the slope setting and communicates each other with one side of letting out and exploding pipe (2), let out the upper end of exploding pipe (2) and be let out the explosion mouth, the lower extreme is the gas outlet, it has gland subassembly (3) to let out explosion mouth department to articulate, a serial communication port, let out the outside of exploding pipe (2) be provided with locating part (4), gland subassembly (3) with locating part (4) are articulated, and the angle that gland subassembly (3) can overturn is less than 90 degrees;

The upper side of intake pipe (1) gas outlet department articulates there is deflector (9), deflector (9) are the arc that the level was placed, deflector (9) with be provided with rupture membrane (8) between gland subassembly (3), transversal setting of rupture membrane (8) is in the gas outlet of intake pipe (1) and let out the passageway between the explosion vent.

2. A horizontal pipe explosion venting device according to claim 1, characterized in that the guide plate (9) is directed downwards in a tangential direction at the end remote from the inlet pipe (1).

3. A horizontal pipe explosion venting device according to claim 1, wherein the gland assembly (3) comprises a gland (31) and a connecting rod (32), the connecting rod (32) is horizontally fixed at the top of the gland (31), and one end of the connecting rod (32) extending outwards along the radial direction of the gland (31) is hinged with the limiting piece (4).

4. The horizontal pipe explosion venting device according to claim 3, wherein the limiting piece (4) is provided with a limiting groove (41) and first penetrating holes (42), the first penetrating holes (42) are symmetrically distributed on two sides of the limiting piece (4) and are communicated with the limiting groove (41), and pin shafts (5) are arranged in the first penetrating holes (42);

the hinge end of the connecting rod (32) is provided with a second through jack (321), the pin shaft (5) sequentially penetrates through the first through jack (42) and the second through jack (321), and the connecting rod (32) is rotationally connected with the pin shaft (5).

5. The horizontal pipe explosion venting device according to claim 4, wherein the distance from the hole center of the second penetrating hole (321) to the end surface of the hinged end of the connecting rod (32) is larger than the distance from the hole center of the first penetrating hole (42) to the bottom surface of the limit groove (41).

6. The horizontal pipe explosion venting device according to claim 4, wherein a blocking block (10) for limiting the rotation angle of the connecting rod (32) is arranged in the middle of the limiting groove (41).

7. A level vial explosion venting device according to claim 3, characterized in that the end of the connecting rod (32) remote from the hinge is provided with a counterweight (6).

8. A level vial explosion venting device according to claim 7, wherein the total weight of the gland assembly (3) and weight (6) does not exceed the maximum pressure that the rupture disc (8) can withstand.

9. The horizontal pipe explosion venting device according to claim 1, wherein the air inlet of the air inlet pipe (1) and the air outlet of the explosion venting pipe (2) are provided with mounting flanges (7).