Explosion-proof valve for exhaust system of high-power gas engine

Abstract

The utility model provides an anti-explosion valve for a high-power gas engine exhaust system, and belongs to the technical field of engines. Comprising an engine exhaust pipeline, an explosion venting opening is formed in the outer wall of the engine exhaust pipeline, an explosion venting connecting flange is connected to the explosion venting opening, an explosion venting valve plate is connected to the explosion venting connecting flange, and the periphery of the explosion venting valve plate is pressed on the explosion venting connecting flange through a plurality of elastic bolt pressing assemblies which are evenly distributed to cover the explosion venting opening. The explosion-proof valve is installed on the exhaust pipe of the gas engine and used for releasing the explosion pressure in the exhaust pipe, after gas is gathered and explodes, the explosion-proof valve is opened, the explosion pressure is released, and the explosion consequence is reduced; the problems that in the prior art, an anti-explosion valve is large in size, large in weight, unreliable in installation and fixation and incapable of being used in a high-temperature environment are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of engines, and in particular relates to an explosion-proof valve for an exhaust system of a high-power gas engine. Background Art

[0002] When a gas engine fails to ignite or is in an abnormal state, or is running at idle speed, the gas in the cylinder cannot be fully burned, resulting in a large amount of unburned natural gas in the exhaust gas, which is very likely to explode at high temperatures, posing a safety hazard. In particular, high-power natural gas engines have a large displacement and consume a lot of gas. When the combustion is incomplete, the gas content in the exhaust gas is high, and the risk of explosion is higher, and the consequences will be more serious. Therefore, it is necessary to install an explosion-proof valve on the exhaust pipe to release the explosion pressure and reduce the power after the explosion.

[0003] High-power gas engines are usually installed indoors, and the exhaust needs to be connected from indoors to outdoors. The exhaust pipe is long, usually more than 10m. At the same time, the exhaust volume of high-power gas engines is large. For example, the exhaust pipe diameter of a 3000KW gas engine is usually more than DN600. The total length is calculated as 10m, and the volume of the exhaust pipe is as high as 2.8 cubic meters. Once the unburned gas in the pipe explodes, the consequences will be serious. Therefore, it is very necessary to install an explosion-proof valve for pressure relief.

[0004] The exhaust pipe of a high-power engine has a large volume, and the required explosion-proof area is large, which results in a large volume and high weight of the explosion-proof valve. After the explosion-proof valve is installed, additional brackets and other fixing devices need to be added to ensure that the exhaust pipe is reliably fixed. At the same time, the exhaust temperature of a gas engine is generally above 400°C, and general explosion-proof valves cannot be used in high-temperature environments.

[0005] Therefore, improvements are proposed to address the above problems. Utility Model Content

[0006] The technical problem solved by the utility model is to provide an explosion-proof valve for an exhaust system of a high-power gas engine. The utility model aims to solve the problems in the prior art that the explosion-proof valve is large in size, heavy in weight, unreliable in installation and fixation, and cannot be used in a high-temperature environment.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] An explosion-proof valve for a high-power gas engine exhaust system comprises an engine exhaust pipeline, wherein an explosion vent is arranged on the outer wall of the engine exhaust pipeline, wherein an explosion vent is connected to the explosion vent connecting flange, wherein an explosion vent valve plate is connected to the explosion vent connecting flange, wherein a periphery of the explosion vent valve plate is pressed against the explosion vent connecting flange by a plurality of evenly distributed groups of elastic bolt pressing assemblies to cover the explosion vent.

[0009] Among them, each group of the elastic bolt clamping assembly includes a bolt, an adjusting gasket, a spring and a nut. The bolt passes through the holes on the explosion-relief connecting flange and the explosion-relief valve plate. The adjusting gasket is sleeved on the bolt and pressed on the outer surface of the explosion-relief valve plate. The spring is sleeved on the bolt, and the lower end of the spring is pressed on the adjusting gasket. The nut is screwed on the upper end of the bolt to press the upper end of the spring.

[0010] Furthermore, the compression height of the spring is adjusted by changing the number of adjusting washers on each of the bolts.

[0011] Furthermore, the explosion relief pressure is changed by changing the number of elastic bolt pressing assemblies that press the explosion relief valve plate.

[0012] Furthermore, the bolt is externally sleeved with a lower spring seat and an upper spring seat, the lower spring seat is pressed on the upper part of the adjusting gasket, the lower end of the spring is pressed on the lower spring seat, the upper spring seat is placed on the upper part of the spring, and the upper end of the spring is pressed on the upper spring seat.

[0013] Furthermore, a spacer sleeve is sleeved on the outside of the bolt, and the hole, adjustment gasket, lower spring seat, spring and upper spring seat on the explosion relief valve plate are all sleeved on the outside of the spacer sleeve.

[0014] Furthermore, a lifting ring is fixedly connected to the middle portion of the outer side surface of the explosion relief valve plate.

[0015] The advantages of this utility model compared with the prior art:

[0016] 1. In this scheme, the explosion-proof valve is installed on the exhaust pipe of the gas engine to release the explosion pressure in the exhaust pipe. After the gas gathers and explodes, the explosion-proof valve opens to release the explosion pressure and reduce the consequences of the explosion;

[0017] 2. After the explosion-proof valve is installed on the exhaust pipe of the gas engine in this solution, once the gas in the exhaust pipe explodes, it can be quickly opened to release the explosion pressure, thereby improving the safety of engine operation;

[0018] 3. The explosion-proof valve of this scheme has a simple structure, is easy to process, works reliably, has low processing cost, is light in weight, and has little impact on the exhaust pipe after installation;

[0019] 4. In this scheme, the explosion-proof valve can adjust the opening pressure of the explosion-proof valve by adjusting the spring height and the number of springs. The opening pressure adjustment method is simple and convenient and can be adjusted according to needs;

[0020] 5. The explosion-proof valve in this solution can be used in high-temperature places, can be opened repeatedly, and has a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0022] Figure 2 It is a top view of the structure of the utility model;

[0023] Figure 3 For this utility model Figure 2 AA section view in the figure;

[0024] Figure 4 For this utility model Figure 3 The enlarged structural schematic diagram of the elastic bolt clamping assembly shown in part B in the middle. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "includes a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0027] See also Figure 1-4 , describe the embodiments of the present utility model in detail.

[0028] Example: Explosion-proof valve for high-power gas engine exhaust system, see Figure 1 , Figure 2 , Figure 3 As shown, it includes an engine exhaust pipe 1, and an explosion vent 2 is provided on the outer wall of the engine exhaust pipe 1, and the explosion vent 2 is connected to an explosion vent connecting flange 3, and the explosion vent connecting flange 3 is connected to an explosion vent valve plate 4, and the explosion vent valve plate 4 is pressed on the explosion vent connecting flange 3 by a plurality of evenly distributed groups of elastic bolt clamping assemblies 5 around a periphery to cover the explosion vent 2.

[0029] In this embodiment, the shape of the explosion vent 2 on the outer wall of the engine exhaust pipe 1 is most commonly circular, such as Figure 2 As shown, it can also be a square or other structure, and the corresponding explosion relief connecting flange 3 and explosion relief valve plate 4 are also round or square.

[0030] Through the above structure, after the explosion-proof valve is installed on the exhaust pipe of the gas engine, once the gas in the exhaust pipe explodes, it can be quickly opened to release the explosion pressure, thereby improving the safety of engine operation.

[0031] Moreover, the explosion-proof valve can be used in high-temperature places, can be opened repeatedly, and has a long service life.

[0032] In a specific implementation: see Figure 4 As shown, each group of the elastic bolt clamping assembly 5 includes a bolt 6, an adjusting gasket 9, a spring 10 and a nut 12. The bolt 6 passes through the holes on the explosion-relief connecting flange 3 and the explosion-relief valve plate 4. The adjusting gasket 9 is sleeved on the bolt 6 and pressed on the outer surface of the explosion-relief valve plate 4. The spring 10 is sleeved on the bolt 6. The lower end of the spring 10 is pressed on the adjusting gasket 9. The nut 12 is screwed on the upper end of the bolt 6 to press the upper end of the spring 10.

[0033] Through the above structure, when the explosion pressure rises in the exhaust pipe, the exhaust pressure pushes the explosion relief valve plate to move upward, the spring is compressed, and the explosion relief valve plate opens to release the explosion pressure. After the pressure is released, the explosion relief valve plate returns to its original position under the action of the spring force, and the explosion-proof valve is closed.

[0034] In this embodiment, the explosion-proof valve has a simple structure, is easy to manufacture, works reliably, has a low cost, is light in weight, and has little impact on the exhaust pipe after installation.

[0035] In a specific implementation manner, the compression height of the spring 10 is adjusted by changing the number of the adjusting washers 9 on each of the bolts 6 .

[0036] The explosion relief pressure can also be changed by changing the number of the elastic bolt pressing assemblies 5 that press the explosion relief valve plate 4 .

[0037] Through the above structure, there are two ways to adjust the explosion relief pressure of the explosion-proof valve: 1) adjust the number of adjustment gaskets under each group of springs, change the compression height of the springs, and adjust the explosion relief pressure; 2) change the uniform number of spring groups, such as increasing 10 groups of springs to 20 groups of springs, so as to increase the explosion relief pressure. The opening pressure adjustment method of the explosion-proof valve is simple and effective, and can be adjusted according to needs.

[0038] In a specific implementation: see Figure 3 As shown, the outer part of the bolt 6 is covered with a lower spring seat 8 and an upper spring seat 11, the lower spring seat 8 is pressed on the upper part of the adjusting gasket 9, the lower end of the spring 10 is pressed on the lower spring seat 8, the upper spring seat 11 is placed on the upper part of the spring 10, and the upper end of the spring 10 is pressed on the upper spring seat 11.

[0039] In the above structure, the lower spring seat 8 and the upper spring seat 11 are both T-shaped sleeve structures, which are convenient for the clamping installation of the spring end.

[0040] In a specific implementation manner: the bolt 6 is covered with a spacer sleeve 7 on the outside, and the hole on the explosion relief valve plate 4 , the adjustment gasket 9 , the lower spring seat 8 , the spring 10 and the upper spring seat 11 are all covered on the outside of the spacer sleeve 7 .

[0041] Through the above structure, a spacer sleeve is used, and all components sleeved on the bolt are outside the spacer sleeve, which is convenient for protecting the threads on the outside of the bolt, preventing the displacement of components such as the spring driven by the opening and closing of the valve plate from damaging the threads of the bolt, thereby protecting the threads.

[0042] In a specific implementation manner, a lifting ring 13 is fixedly connected to the middle of the outer side surface of the explosion relief valve plate 4 to facilitate lifting.

[0043] When in use: the explosion relief valve plate is pressed on the flange by evenly distributed springs and is normally in a closed state. When an explosion occurs in the exhaust pipe and the pressure rises, the exhaust pressure pushes the explosion relief valve plate upward, the spring is compressed, and the valve plate opens to release the explosion pressure. After the pressure is released, the explosion relief valve plate returns to its original position under the action of the spring force, and the explosion-proof valve is closed.

[0044] The utility model is used in the exhaust system of a gas engine, and is particularly suitable for a high-power gas engine, a gas engine with a long exhaust pipe and a large volume. Once an explosion occurs, the explosion-proof valve opens to release pressure, thereby reducing the risk of explosion to a minimum, protecting the personal safety of on-site personnel, and ensuring the safe operation of the engine.

[0045] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0046] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An explosion-proof valve for a high-power gas engine exhaust system, comprising an engine exhaust pipeline (1), wherein an explosion vent (2) is provided on the outer wall of the engine exhaust pipeline (1), and the characteristics are: The explosion relief opening (2) is connected to an explosion relief connection flange (3), and the explosion relief connection flange (3) is connected to an explosion relief valve plate (4). The explosion relief valve plate (4) is pressed against the explosion relief connection flange (3) by a plurality of evenly distributed groups of elastic bolt pressing assemblies (5) around a periphery to cover the explosion relief opening (2).

2. The explosion-proof valve for the exhaust system of a high-power gas engine according to claim 1 is characterized in that: Each group of the elastic bolt clamping assembly (5) comprises a bolt (6), an adjusting gasket (9), a spring (10) and a nut (12); the bolt (6) passes through holes on the explosion relief connection flange (3) and the explosion relief valve plate (4); the adjusting gasket (9) is sleeved on the bolt (6) and pressed on the outer surface of the explosion relief valve plate (4); the spring (10) is sleeved on the bolt (6); the lower end of the spring (10) is pressed on the adjusting gasket (9); and the nut (12) is screwed on the upper end of the bolt (6) to press the upper end of the spring (10).

3. The explosion-proof valve for the exhaust system of a high-power gas engine according to claim 2 is characterized in that: The compression height of the spring (10) is adjusted by changing the number of adjusting washers (9) on each of the bolts (6).

4. The explosion-proof valve for the exhaust system of a high-power gas engine according to claim 2, characterized in that: The explosion relief pressure is changed by varying the number of elastic bolt pressing assemblies (5) that press the explosion relief valve plate (4).

5. The explosion-proof valve for the exhaust system of a high-power gas engine according to claim 2, characterized in that: The bolt (6) is externally sleeved with a lower spring seat (8) and an upper spring seat (11); the lower spring seat (8) is pressed on the upper part of the adjusting gasket (9); the lower end of the spring (10) is pressed on the lower spring seat (8); the upper spring seat (11) is placed on the upper part of the spring (10); and the upper end of the spring (10) is pressed on the upper spring seat (11).

6. The explosion-proof valve for the exhaust system of a high-power gas engine according to claim 5, characterized in that: The bolt (6) is covered with a spacer sleeve (7) on the outside, and the hole, adjustment gasket (9), lower spring seat (8), spring (10) and upper spring seat (11) on the explosion relief valve plate (4) are all covered on the outside of the spacer sleeve (7).

7. The explosion-proof valve for the exhaust system of a high-power gas engine according to claim 1, characterized in that: A lifting ring (13) is fixedly connected to the middle portion of the outer side surface of the explosion relief valve plate (4).

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