Automatic gravity explosion venting device

Abstract

The automatic gravity explosion venting device comprises an explosion venting pipe and a pipe cover, the explosion venting pipe is used for being connected with an explosion venting opening of a gasification furnace, and the pipe cover is movably installed at the end, away from the explosion venting opening, of the explosion venting pipe through a connecting structure; an included angle is formed between an opening in the end, away from the explosion venting opening, of the explosion venting pipe and the horizontal direction, a circle of sealing strip is arranged at the opening, and the pipe cover covers the opening of the explosion venting pipe under the action of gravity and extrudes the sealing strip. The device can be repeatedly used, ensures safe operation of gasification furnace equipment, and is simple in structure, economical, efficient and suitable for the gasification furnace equipment.

Description

Technical Field

[0001] This application relates to the field of pyrolysis gasification technology, specifically to a gravity-based automatic explosion relief device. Background Technology

[0002] Biomass pyrolysis gasification, as a highly efficient utilization method of biomass energy, is a technology that converts solid biomass raw materials into gaseous fuels. The gaseous fuels produced through pyrolysis gasification can continue to be used for power generation, heating, etc., and have the dual advantages of energy conservation, emission reduction, and economy compared with the use of traditional energy sources.

[0003] Biomass pyrolysis and gasification take place in a gasifier. During gasifier operation, there is a potential risk of flash explosion due to issues such as inadequate sealing or improper operation. Industrially, explosion venting discs are typically installed in gasifiers, but these discs are usually disposable and need to be replaced immediately after the explosion is vented. This severely impacts the continuity and economic efficiency of production. Utility Model Content

[0004] Therefore, this application provides a gravity-based automatic explosion relief device to solve the problem that the disposable explosion relief discs in the prior art need to be replaced, which affects the continuity of production and economic efficiency.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] An automatic gravity-driven explosion venting device includes an explosion venting pipe and a pipe cover. The explosion venting pipe is used to connect to the explosion vent of a gasifier. The pipe cover is movably installed at the end of the explosion venting pipe away from the explosion vent via a connecting structure. The opening at the end of the explosion venting pipe away from the explosion vent forms an angle with the horizontal direction, and a sealing strip is provided at the opening. Under the action of gravity, the pipe cover covers the opening of the explosion venting pipe and compresses the sealing strip.

[0007] Optionally, the connection structure includes a fixing member, a limiting module, and a connector. The fixing member is installed on the peripheral wall of the explosion relief pipe. The limiting module is installed on the fixing member and extends towards the side close to the opening of the explosion relief pipe. One end of the connector is rotatably connected to the limiting module, and the other end is fixedly connected to the pipe cover. The connector rotates to drive the pipe cover to open and close the opening of the explosion relief pipe.

[0008] Optionally, the connector is connected to the limiting module by a limiting bolt, and the limiting bolt is fitted with a limiting nut for limiting the left and right movement of the connector relative to the limiting module, and the connector can rotate on the limiting bolt.

[0009] Optionally, the limiting module is provided with a spring-loaded component, and the connecting member can rotate to contact the spring-loaded component and compress it.

[0010] Optionally, the spring element is made of elastic rubber material.

[0011] Optionally, the explosion relief pipe includes an explosion relief bend, a first explosion relief straight pipe, and a second explosion relief straight pipe. The explosion relief bend is connected between the first and second explosion relief straight pipes. The first explosion relief straight pipe is used to connect to the explosion relief port of the gasifier. The pipe cover is installed on the second explosion relief straight pipe.

[0012] Optionally, the explosion relief bend is a 45° bend.

[0013] Optionally, both the explosion relief pipe and the pipe cover are circular structures, and a collar is provided on the side of the pipe cover facing the opening of the explosion relief pipe, the collar being adapted to the opening of the explosion relief pipe.

[0014] Optionally, the sealing strip extends 4 mm radially beyond the opening of the vent pipe.

[0015] Optionally, a connecting flange is provided at the end of the explosion relief pipe away from the pipe cover, and the connecting flange is used to mate with the explosion relief port of the gasifier.

[0016] Compared with the prior art, this application has at least the following beneficial effects:

[0017] 1. When the gas pressure inside the gasifier is too high, it will push the pipe cover outward to make it open automatically. After the explosion is released, the pipe cover will reset under the action of gravity and the explosion vent will be sealed again by compressing the sealing strip. This realizes the reset of the explosion venting device after the explosion is released, which solves the problem that disposable explosion venting discs cannot be reused, affecting the continuity of production and economy. It has the advantages of simple structure, safety and economy, and is suitable for explosion venting of various gasifier devices.

[0018] 2. By limiting the connecting parts with limit bolts and limit nuts, the movement of the connecting parts in the axial direction of the limit bolts is prevented, so that they can only drive the pipe cover to rotate, and will not cause the pipe cover to deviate radially in the opening of the explosion relief pipe.

[0019] 3. The spring mechanism can buffer the pipe cover during explosion venting and reset the pipe cover with spring force after the explosion venting is completed. Attached Figure Description

[0020] To more intuitively illustrate the prior art and this application, exemplary drawings are provided below. It should be understood that the specific shapes and structures shown in the drawings should not generally be regarded as limiting conditions for implementing this application; for example, based on the technical concept disclosed in this application and the exemplary drawings, those skilled in the art are able to easily make conventional adjustments or further optimizations to the addition / reduction / classification, specific shapes, positional relationships, connection methods, size ratios, etc. of certain units (components).

[0021] Figure 1A front view of a gravity-based automatic explosion relief device provided in an embodiment of this application;

[0022] Figure 2 This is a side view of an automatic gravity-based explosion relief device provided in an embodiment of this application.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Connecting flange; 2. First explosion relief straight pipe; 3. Explosion relief elbow; 4. Second explosion relief straight pipe; 5. Sealing strip; 6. Pipe cap; 7. Connecting parts; 8. Opening; 9. Limit bolt; 10. Limit nut; 11. Limit module; 12. Fixing parts; 13. Rebound parts. Detailed Implementation

[0025] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] In the description of this application: unless otherwise stated, "a plurality of" means two or more. The terms "first," "second," "third," etc., in this application are intended to distinguish the objects referred to and do not have any special meaning in terms of technical connotation (e.g., they should not be construed as an emphasis on importance or order). Expressions such as "comprising," "including," and "having" also mean "not limited to" (certain units, components, materials, steps, etc.).

[0027] The terms used in this application, such as "upper," "lower," "left," "right," and "middle," are generally used to indicate the general relative positional relationship for the purpose of intuitive understanding by referring to the accompanying drawings, and are not absolute limitations on the positional relationship in the actual product.

[0028] An automatic gravity-based explosion relief device, referring to Figure 1 and Figure 2 The system includes an explosion venting pipe and a pipe cover 6. Specifically, the explosion venting pipe includes an explosion venting bend 3, a first explosion venting straight pipe 2, and a second explosion venting straight pipe 4. The explosion venting bend 3 connects between the first explosion venting straight pipe 2 and the second explosion venting straight pipe 4. The first explosion venting straight pipe 2 is used to connect to the explosion vent of the gasifier. In this embodiment, a connecting flange 1 is provided at the end of the first explosion venting straight pipe 2 near the explosion vent of the gasifier, which can be installed and disassembled easily with the explosion vent reserved in the gasifier. The pipe cover 6 is installed on the second explosion venting straight pipe 4 and is used to seal the opening 8 at the end of the second explosion venting straight pipe 4 away from the explosion vent.

[0029] Specifically, the pipe cover 6 is movably mounted on the end of the second explosion-proof straight pipe 4 away from the explosion-proof opening via a connecting structure. The connecting structure includes a fixing member 12, a limiting module 11, and a connecting member 7. The fixing member 12 is welded to the peripheral wall of the explosion-proof pipe. The limiting module 11 is mounted on the fixing member 12 and extends towards the side closer to the opening 8 of the explosion-proof pipe. One end of the connecting member 7 is rotatably connected to the limiting module 11, and the other end is fixedly connected to the pipe cover 6. The connecting member 7 rotates to cause the pipe cover 6 to open and close the opening 8 of the explosion-proof pipe.

[0030] To enable the rotating connection of connector 7, connector 7 is connected to limit module 11 via limit bolt 9. Limit bolt 9 is arranged radially along the opening 8 of the explosion relief pipe and passes through both connector 7 and limit module 11, allowing connector 7 to rotate freely on limit bolt 9. To prevent connector 7 from shifting radially along the opening 8 of the explosion relief pipe, which could lead to misalignment of pipe cover 6, limit nut 10 is fitted on limit bolt 9 to restrict the left and right movement of connector 7 relative to limit module 11. Limit nut 10 and the head of limit bolt 9 restrict connector 7, ensuring free rotation without shifting.

[0031] The opening 8 at the end of the explosion relief pipe furthest from the explosion relief port forms an angle with the horizontal direction. Specifically, the explosion relief bend 3 is a 45° bend. That is, after the explosion relief pipe is fully installed, the opening 8 at the end of the explosion relief bend 3 furthest from the explosion relief port forms a 45° angle with the horizontal direction, and the opening 8 of the second explosion relief straight pipe 4 connected to it is in the same direction as its opening 8. Therefore, the pipe cover 6 can cover the opening 8 of the second explosion relief straight pipe 4 under the action of gravity.

[0032] To improve sealing, a sealing strip 5 is installed at the opening 8 of the second explosion relief pipe 4. The sealing strip 5 extends radially beyond the opening 84mm of the explosion relief pipe and has a certain degree of compressibility. Under normal conditions, when the pipe cover 6 is placed on the opening 8 of the explosion relief pipe under the action of gravity, it will compress the sealing strip 5, thereby sealing the opening 8.

[0033] Furthermore, the explosion relief pipe is configured as a circular pipe structure, the pipe cover 6 is a circular plate, and a collar is provided on the side of the pipe cover 6 facing the opening 8 of the explosion relief pipe. The collar is adapted to the opening 8 of the explosion relief pipe, so that when the pipe cover 6 seals the opening 8, the sleeve can be inserted into the second explosion relief straight pipe 4 and together with the pipe cover 6, cover the opening 8 of the explosion relief pipe.

[0034] The limiting module 11 is provided with a spring-loaded component 13, which covers part of the surface of the limiting module 11 and leaves a certain gap with the connecting component 7. When the connecting component 7 rotates, it can contact the spring-loaded component 13 and squeeze the spring-loaded component 13.

[0035] The spring-loaded component 13 is made of elastic rubber material, which allows it to deform under the pressure of the connecting component 7 when the pipe cover 6 is popped open during the explosion venting, and absorb the impact force generated during the explosion venting. After the explosion venting is completed, the spring-loaded component 13 returns to its original position, causing the pipe cover 6 to reset and re-close at the opening 8 of the explosion venting pipe for sealing.

[0036] The implementation principle of this application embodiment is as follows: when the gasifier is running under normal negative pressure, the pipe cover 6 compresses the sealing strip 5 under its own gravity and covers the second explosion relief straight pipe 4, thereby achieving the sealing of the explosion relief port.

[0037] When the gasifier operates abnormally, i.e., the internal pressure rises and the furnace becomes a positive pressure state, as the internal pressure continues to increase, when the internal pressure exceeds the vertical component of gravity of the pipe cover 6 and the connecting piece 7, the internal pressure will force the pipe cover 6 open. The pipe cover 6 then rotates around the limiting bolt 9 via the connecting piece 7.

[0038] When the connector 7 rotates to contact the spring-loaded member 13, it will continue to compress the elastic spring-loaded member 13. The spring-loaded member 13 will deform and absorb the impact force generated during the explosion venting until the impact force is completely absorbed. Then, under the action of the elastic force of the spring-loaded member 13 and the vertical component of gravity of the cap 6 and the connector 7, the cap 6 will complete the reset action and seal the explosion vent. When the next explosion venting is required, the above actions will be repeated.

[0039] The technical features of the above embodiments can be combined in any way (as long as there is no contradiction in the combination of these technical features). For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described; these embodiments not explicitly written should also be considered to be within the scope of this specification.

Claims

1. A gravity-based automatic explosion relief device, characterized in that: It includes a venting pipe and a pipe cover (6). The venting pipe is used to connect to the venting port of the gasifier. The pipe cover (6) is movably installed at the end of the venting pipe away from the venting port through a connecting structure. The opening (8) at the end of the venting pipe away from the venting port has an angle with the horizontal direction, and a sealing strip (5) is provided at the opening (8). The pipe cover (6) is placed on the opening (8) of the venting pipe under the action of gravity and squeezes the sealing strip (5).

2. The gravity-based automatic explosion relief device according to claim 1, characterized in that: The connection structure includes a fixing member (12), a limiting module (11), and a connector (7). The fixing member (12) is installed on the peripheral wall of the explosion relief pipe. The limiting module (11) is installed on the fixing member (12) and extends toward the side close to the opening (8) of the explosion relief pipe. One end of the connector (7) is rotatably connected to the limiting module (11), and the other end is fixedly connected to the pipe cover (6). The connector (7) rotates to drive the pipe cover (6) to open and close the opening (8) of the explosion relief pipe.

3. The gravity-based automatic explosion relief device according to claim 2, characterized in that: The connector (7) is connected to the limiting module (11) by a limiting bolt (9). The limiting bolt (9) is fitted with a limiting nut (10) for limiting the left and right movement of the connector (7) relative to the limiting module (11). The connector (7) can rotate on the limiting bolt (9).

4. The gravity-based automatic explosion relief device according to claim 2, characterized in that: The limiting module (11) is provided with a spring-loaded component (13), and the connecting component (7) can rotate to contact the spring-loaded component (13) and squeeze the spring-loaded component (13).

5. The gravity-based automatic explosion relief device according to claim 4, characterized in that: The spring-loaded component (13) is made of elastic rubber material.

6. The gravity-based automatic explosion relief device according to claim 1, characterized in that: The explosion relief pipe includes an explosion relief bend (3), a first explosion relief straight pipe (2), and a second explosion relief straight pipe (4). The explosion relief bend (3) is connected between the first explosion relief straight pipe (2) and the second explosion relief straight pipe (4). The first explosion relief straight pipe (2) is used to connect to the explosion relief port of the gasifier. The pipe cover (6) is installed on the second explosion relief straight pipe (4).

7. The gravity-based automatic explosion relief device according to claim 6, characterized in that: The explosion relief bend (3) is a 45° bend.

8. The gravity-based automatic explosion relief device according to claim 1, characterized in that: Both the explosion relief pipe and the pipe cover (6) are circular structures. The pipe cover (6) has a collar on the side facing the opening (8) of the explosion relief pipe, and the collar is adapted to the opening (8) of the explosion relief pipe.

9. The gravity-based automatic explosion relief device according to claim 1, characterized in that: The sealing strip (5) extends 4 mm radially beyond the opening (8) of the vent pipe.

10. The gravity-based automatic explosion relief device according to claim 1, characterized in that: The end of the explosion relief pipe away from the pipe cover (6) is provided with a connecting flange (1), which is used to be installed in conjunction with the explosion relief port of the gasifier.

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