CN219866475U - Explosion-proof wave valve - Google Patents

Abstract

The utility model discloses an explosion-proof wave valve, which comprises a valve body, wherein vent sets are arranged in the valve body, and each vent set consists of an outer vent on the front surface of the valve body and an inner vent on the back surface of the valve body; a sealing rod and a spring assembly are arranged between the outer vent and the inner vent, and the spring assembly is positioned between a spring limiting plate in the sealing rod and the outer vent and between the spring limiting plate and the inner vent. The utility model solves the problem that the prior explosion-proof wave valve can not realize bidirectional antiknock and bidirectional ventilation.

Description

Explosion-proof wave valve

Technical Field

The utility model belongs to the technical field of heating and ventilation equipment, and relates to an explosion-proof wave valve.

Background

In the existing power station design, the pressure generated by shock waves is protected by installing explosion-proof wave valves inside or outside the outdoor air port, and the pressure can be quickly closed to isolate indoor and outdoor air when instant overpressure occurs, so that the ventilation system is prevented from being impacted by instant pressure waves, and the personnel safety and the integrity of the pipelines and equipment of the ventilation system are ensured.

The existing explosion-proof wave valve is a single-sided spring, can only ventilate unidirectionally, namely can only play a role in protecting the positive pressure stage of shock waves, and when negative pressure occurs after explosion, the valve cannot play a role in protecting any more, and needs to be reset manually after an accident.

Therefore, there is a need for an anti-surge valve that is bi-directional antiknock, bi-directional reset, bi-directional venting.

Disclosure of Invention

In order to achieve the purpose, the utility model provides the explosion-proof wave valve, which solves the problem that the existing explosion-proof wave valve cannot realize bidirectional antiknock and bidirectional ventilation.

In order to solve the technical problems, the utility model adopts the technical scheme that the explosion-proof wave valve comprises a valve body, wherein vent sets are arranged in the valve body, and each vent set consists of an outer vent on the front surface of the valve body and an inner vent on the back surface of the valve body; a sealing rod and a spring assembly are arranged between the outer vent and the inner vent, and the spring assembly is positioned between a spring limiting plate in the sealing rod and the outer vent and between the spring limiting plate and the inner vent.

Further, the outer vent and the inner vent are formed by combining an upper frame, a lower frame and a middle plate.

Further, a sliding rod is arranged in the valve body, two ends of the sliding rod are fixedly connected with supporting blocks, and the supporting blocks are fixed in the outer ventilation opening and the inner ventilation opening; the spring component is sleeved on the sliding rod; the sliding rod vertically penetrates through the sealing rod and the spring limiting plate; one end of the spring assembly is fixedly connected with the spring limiting plate, and the other end of the spring assembly is fixedly connected with the second outer tooth locking washer at the end part of the sliding rod.

Further, the supporting block is fixedly connected with the sliding rod through a nut, a second outer tooth locking washer and a flat washer.

Further, a supporting plate is fixed in the sealing rod, and the spring limiting plates are fixed on two sides of the supporting plate.

Further, the valve body comprises an arc plate, the arc plate is respectively fixed on the upper surface of the upper frame and the lower surface of the lower frame, and the arc plate is positioned right above and right below the sealing rod.

Further, the valve body further comprises an end cover plate, and the end cover plate is respectively fixed on the outer sides of the outer vent and the inner vent through a hexagon head bolt and a first external tooth locking washer.

Further, the valve body and the sealing rod are made of 316L stainless steel.

The beneficial effects of the utility model are as follows:

under normal ventilation state, the sealing rod is in the intermediate position of outer vent and interior vent under the effect of spring assembly, and explosion-proof wave valve is open state, and the wind flow can be from arbitrary direction through the vent, realizes two-way ventilation, and when exploding, can both play the guard action to shock wave malleation stage and negative pressure stage, comprehensive protection building inside personnel and facility can be automatic to the initial state after the disappearance of explosion shock wave, continue to normally provide ventilation function, need not the manual reset for explosion-proof wave valve has two-way antiknock, two-way ventilation effect.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a front view of a blast valve according to an embodiment of the present utility model.

Fig. 2 is a left side view of an explosion proof valve according to an embodiment of the present utility model.

Fig. 3 is a partial cross-sectional view of a top view of a blast valve according to an embodiment of the present utility model.

Fig. 4 is a cross-sectional view A-A of fig. 1.

In the figure, the valve body is 1, the end cover plate is 2, the hexagon head bolt is 3, the first external tooth locking washer is 4, the nut is 6, the slide bar is 7, the second external tooth locking washer is 8, the flat washer is 9, the spring assembly is 10, the sealing rod is 11, the spring limiting plate is 12, the circular arc plate is 13, the upper frame is 14, the supporting plate is 15, the middle plate is 16, the lower frame is 17, the outer ventilation opening is 18, the inner ventilation opening is 19, and the supporting block is 19.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. 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.

As shown in fig. 1-3, the utility model provides an explosion wave valve, which comprises a valve body 1, wherein 3 vent groups are arranged on the valve body 1, each vent group consists of an outer vent 17 on the front surface of the valve body 1 and an inner vent 18 on the back surface of the valve body 1, the outer vent 17 and the inner vent 18 are arranged in a one-to-one correspondence manner, each outer vent 17 and each inner vent 18 are formed by combining an upper frame 13, a lower frame 16 and a middle plate 15, a sealing rod 10 and a spring assembly 9 are arranged between each outer vent 17 and each inner vent 18, the sealing rod 10 is tightly clamped with the outer vent 17 or the inner vent 18 by virtue of the spring assembly 9 and a spring limiting plate 11, and the spring assembly 9 is respectively positioned between the sealing rod 10 and the vent groups in a natural state, so that the sealing rod 10 is positioned in the middle of a valve cavity, and the two valve ports are communicated.

In some embodiments, the valve body 1 is formed by combining an upper frame 13, a lower frame 16, a middle plate 15, a circular arc plate 12 and an end cover plate 2, and the end cover plate 2 is fixed outside an outer vent hole 17 and an inner vent hole 18 through a hexagon head bolt 3 and a first external tooth locking washer 4; the circular arc plates 12 are fixed to the upper surface of the upper frame 13 and the lower surface of the lower frame 16, respectively, and the circular arc plates 12 are specifically located directly above and directly below the seal rod 10, and serve to buffer shock waves.

In some embodiments, the supporting blocks 19 are fixed in the outer vent 17 and the inner vent 18, the end parts of the sliding rods 6 are connected with the supporting blocks 19 and are connected and fastened through the nuts 5, the second outer tooth locking washers 7 and the flat washers 8, and the structure is simple to maintain and convenient to assemble and disassemble.

In some embodiments, the valve body 1 and the sealing rod 10 are made of 316L stainless steel, and have good high temperature resistance and corrosion resistance.

In some embodiments, to realize the sliding and resetting of the sealing rod 10, a sliding rod 6 communicated with an inner vent 17 and an outer vent 18 is arranged in the valve body 1, and the sliding rod 6 vertically penetrates through the sealing rod 10; a supporting plate 14, a spring assembly 9 and a spring limiting plate 11 are arranged in the sealing rod 10, and the sliding rod 6 passes through the supporting plate 14; the spring assembly 9 is sleeved on the slide rod 6, the spring assembly 9 is located on two sides of the supporting plate 14, one end of the spring assembly 9 is fixedly connected with the spring limiting plate 11, and the other end of the spring assembly 9 is fixedly connected with the second outer tooth locking washer 7 at the end of the slide rod 6.

The working process of the utility model is as follows:

in a natural state, the center of the sealing rod 10 is positioned in the middle of the outer vent 17 and the inner vent 18 under the action of the spring assemblies 9, when the explosion-proof valve is subjected to the impact force of external explosion, the impact force acts on the sealing rod 10 to compress one group of spring assemblies 9 and move towards the corresponding inner vent 18, so that the sealing rod 10 seals the inner vent 18, when the impact force disappears, the sealing rod 10 resets to the middle of the valve cavity under the action of the spring assemblies 9, otherwise, if the explosion happens indoors, the sealing rod 10 can reversely act to block the impact wave, the safety of outdoor personnel and facilities is protected, and the structure is simple without manual resetting.

In this specification, each embodiment is described in a related manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model are included in the protection scope of the present utility model.

Claims (8)

1. The explosion wave prevention valve is characterized by comprising a valve body (1), wherein vent groups are arranged in the valve body (1), and each vent group consists of an outer vent (17) on the front surface of the valve body (1) and an inner vent (18) on the back surface of the valve body (1); a sealing rod (10) and a spring assembly (9) are arranged between the outer vent (17) and the inner vent (18), and the spring assembly (9) is positioned between a spring limiting plate (11) and the outer vent (17) and between the spring limiting plate (11) and the inner vent (18) in the sealing rod (10).

2. An explosion-proof valve according to claim 1, wherein the outer vent (17) and the inner vent (18) are each formed by combining an upper frame (13), a lower frame (16) and an intermediate plate (15).

3. The explosion-proof wave valve according to claim 1, wherein a sliding rod (6) is arranged in the valve body (1), two ends of the sliding rod (6) are fixedly connected with a supporting block (19), and the supporting block (19) is fixed in the outer vent (17) and the inner vent (18); the spring component (9) is sleeved on the slide bar (6); the sliding rod (6) vertically penetrates through the sealing rod (10) and the spring limiting plate (11); one end of the spring assembly (9) is fixedly connected with the spring limiting plate (11), and the other end of the spring assembly (9) is fixedly connected with the second outer tooth locking washer (7) at the end part of the sliding rod (6).

4. A blast valve according to claim 3, characterized in that the support block (19) is fixedly connected to the slide bar (6) by means of a nut (5), a second external tooth lock washer (7) and a flat washer (8).

5. An explosion-proof valve according to any one of claims 1 to 3, wherein the sealing rod (10) is fixed with a support plate (14), and the spring limiting plates (11) are fixed on two sides of the support plate (14).

6. An explosion-proof valve according to claim 1, wherein the valve body (1) comprises an arc plate (12), the arc plate (12) is fixed on the upper surface of the upper frame (13) and the lower surface of the lower frame (16), respectively, and the arc plate (12) is located right above and right below the sealing rod (10).

7. An explosion-proof valve according to claim 1, wherein the valve body (1) further comprises an end cap plate (2), the end cap plate (2) being fixed to the outer side of the outer vent (17) and the inner vent (18) by means of a hexagonal head bolt (3) and a first externally toothed lock washer (4), respectively.

8. The blast valve according to claim 1, wherein the valve body (1) and the sealing rod (10) are made of 316L stainless steel.