Explosion-proof and leakage-proof safety device for chemical pipeline flange

Abstract

The utility model discloses an explosion-proof leakproof safety device of a chemical pipeline flange, which belongs to the technical field of flanges and comprises a limiting leather sheath, fixing components are respectively mounted at two ends of the limiting leather sheath, each fixing component comprises a mounting block, four square grooves are formed in the outer side of each mounting block, a plurality of clamping blocks are mounted on the inner side of the limiting leather sheath, and the clamping blocks are connected with the limiting leather sheath. Limiting grooves are formed in the two inner ends of the limiting leather sheath correspondingly, a lifting groove is formed in the clamping block, and a movable plate is installed in the lifting groove. According to the anti-explosion and anti-leakage safety device for the chemical pipeline flange, the tooth block is transversely limited in the annular groove, the installation block is arranged on a pipeline connector in a sleeving mode, the ejector block in the square groove can be driven to rotate so as to eject the installation block out, the ejector block can be rotationally ejected out through the connecting shaft, the limiting groove can play a role in limiting the ejector block, threaded fixing of the installation block is not needed, and the installation block is not prone to being damaged. And when the chemical pipeline expands, the pipeline connector is displaced to drive the fixing assembly, the flange body is prevented from being broken and popped out, and the anti-explosion performance of the flange body is improved.

Description

Technical Field

[0001] This utility model belongs to the field of flange technology, specifically an explosion-proof and leak-proof safety device for chemical pipeline flanges. Background Technology

[0002] Chemical pipelines are widely used in the chemical industry to transport various gases and liquids of chemicals. Due to the wide variety of chemicals and the fact that many chemicals are corrosive, toxic, flammable, or explosive, chemical leaks can cause a certain degree of environmental pollution.

[0003] Existing chemical pipeline flanges are connected by bolts, resulting in poor sealing performance. Gas leaks are likely to occur after prolonged use, and aging chemical pipelines are prone to explosion in severe weather. Therefore, the replacement of flanges requires frequent disassembly and assembly to replace sealing and safety components, which undoubtedly increases the workload unnecessarily. Utility Model Content

[0004] To overcome the above-mentioned defects, this utility model provides an explosion-proof and leakage-proof safety device for chemical pipeline flanges. It solves the problems of existing chemical pipeline flanges being connected by bolts, resulting in poor sealing performance, easy gas leakage after long-term use, and the risk of explosion in aging chemical pipelines during severe weather. This also means that the replacement of flanges requires frequent disassembly and assembly to replace sealing safety components, which undoubtedly increases the workload.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an explosion-proof and leak-proof safety device for chemical pipeline flanges, comprising a limiting sleeve, with fixing components installed at both ends of the limiting sleeve, each fixing component including an mounting block, four square grooves on the outer side of the mounting block, several snap-fit ​​blocks installed on the inner side of the limiting sleeve, limiting grooves opened at both ends of the inner side of the limiting sleeve, a lifting groove opened in the snap-fit ​​block, a movable plate installed in the lifting groove, a through groove opened on the side of the snap-fit ​​block near the central axis of the limiting sleeve, two flange bodies fitted inside the limiting sleeve, several threaded blocks fixedly installed on the outer side of the two flange bodies, and a pipe interface fixedly installed on one side of the flange body.

[0006] As a further embodiment of this utility model: a top block is installed inside the square groove, one end of the top block is fixedly connected to a connecting shaft, and the two ends of the connecting shaft are respectively rotatably connected to the inner side of the square groove.

[0007] As a further embodiment of this utility model: an annular groove is provided on the inner side of the limiting sleeve at the position corresponding to the snap-fit ​​block, and the annular groove is fixedly connected to the snap-fit ​​block.

[0008] As a further embodiment of this utility model: a spring is fixedly installed on the top of the movable plate, and one end of the spring is fixedly connected to the annular groove.

[0009] As a further embodiment of this utility model: two sets of positioning holes are provided on one side of the flange body, the two sets of positioning holes are symmetrically arranged about the center of the flange body, and the number of positioning holes in each set is two.

[0010] As a further embodiment of this utility model: an installation groove is provided on the inner side of the flange body, and a sealing ring is installed in the installation groove.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. The explosion-proof and leak-proof safety device for this chemical pipeline flange, by setting a limiting sleeve, a square groove, a top block, and a limiting groove, allows the toothed block to be laterally limited within the annular groove by the gap left by the snap-fit ​​block on the annular groove after the flange body is fixed by the limiting sleeve. After the flange body is fixed by the limiting sleeve, the mounting block is fitted onto the pipe interface. Due to the inclined design of the pipe interface, the top block in the square groove can be driven to rotate and push out the mounting block. The connecting shaft can make the top block rotate and push out, while the limiting groove can restrict the top block. There is no need to fix the mounting block with threads. Furthermore, when the chemical pipeline expands, the pipe interface shifts and drives the fixing components, preventing the flange body fragments from popping out and improving its explosion-proof performance.

[0013] 2. The explosion-proof and leak-proof safety device for this chemical pipeline flange, through the installation groove, sealing ring, movable plate, and spring, first installs the sealing ring into the installation groove, then uses the positioning hole to fix the flange body tightly, and finally uses the toothed block to fix it in the limiting sleeve. The sealing ring can prevent leakage of the flange body during operation and improve the sealing performance of the flange body. In addition, under severe weather conditions, the pipeline connection may loosen and cause some gas leakage. The through groove allows chemical gas to enter the lifting groove and drive the movable plate to move in the lifting groove. When the pipeline is reset, the spring can apply elastic force to the movable plate to squeeze the gas back into the pipeline until the pipeline is resealed. Combined with the sealing effect of the sealing ring, it effectively prevents chemical gas leakage and reduces the burden of frequent replacement of seals. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a schematic diagram of the connection between the mounting groove and the sealing ring in this utility model.

[0016] Figure 3 This is a schematic diagram of the structure of the fixing component of this utility model after an explosion.

[0017] Figure 4 This is a schematic diagram of the connection between the movable plate and the spring in this utility model;

[0018] In the diagram: 1. Limiting sleeve; 2. Fixing component; 201. Mounting block; 202. Square groove; 203. Top block; 204. Connecting shaft; 205. Snap-fit ​​block; 206. Ring groove; 207. Limiting groove; 208. Lifting groove; 209. Movable plate; 210. Spring; 211. Through groove; 3. Flange body; 4. Tooth block; 5. Positioning hole; 6. Pipe interface; 7. Mounting groove; 8. Sealing ring. Detailed Implementation

[0019] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0020] like Figure 1-4 As shown, this utility model provides a technical solution: an explosion-proof and leak-proof safety device for chemical pipeline flanges, including a limiting sleeve 1. An annular groove 206 is provided on the inner side of the limiting sleeve 1 at the position corresponding to the snap-fit ​​block 205. The annular groove 206 is fixedly connected to the snap-fit ​​block 205. By providing the annular groove 206, the flange body 3 is fitted into the limiting sleeve 1. The space in the annular groove 206 allows the tooth block 4 to be snapped and limited, which facilitates the installation and fixation of the flange body 3.

[0021] The limiting sleeve 1 is equipped with fixing components 2 at both ends. The fixing components 2 include mounting blocks 201. Four square grooves 202 are opened on the outer side of the mounting blocks 201. A top block 203 is installed in the square grooves 202. One end of the top block 203 is fixedly connected to a connecting shaft 204. The two ends of the connecting shaft 204 are rotatably connected to the inner side of the square groove 202. Because of the connecting shaft 204, the connecting shaft 204 plays the role of supporting and limiting the top block 203, thereby improving the stability of the pipe interface 6 lifting the top block 203 to rotate in the square groove 202.

[0022] Several snap-fit ​​blocks 205 are installed on the inner side of the limiting sleeve 1. Limiting grooves 207 are respectively opened at both ends of the inner side of the limiting sleeve 1. A lifting groove 208 is opened in the snap-fit ​​block 205. A movable plate 209 is installed in the lifting groove 208. A spring 210 is fixedly installed on the top of the movable plate 209. One end of the spring 210 is fixedly connected to the annular groove 206. Because of the spring 210, the spring 210 can support and reset the movement of the movable plate 209, and prevent the movable plate 209 from failing to reset after being moved by gas, thus preventing leakage.

[0023] The snap-fit ​​block 205 has a through groove 211 on one side near the central axis of the limiting sleeve 1. Two flange bodies 3 are fitted inside the limiting sleeve 1. Several toothed blocks 4 are fixedly installed on the outer side of the two flange bodies 3 respectively. A pipe interface 6 is fixedly installed on one side of the flange body 3. Two sets of positioning holes 5 are opened on one side of the flange body 3. The two sets of positioning holes 5 are symmetrically arranged about the center of the flange body 3, and there are two positioning holes in each set. By providing positioning holes 5, the symmetrical positioning holes 5 can prevent the flange body 3 from being misaligned, and improve reliability through cross-alignment.

[0024] An installation groove 7 is provided on the inner side of the flange body 3, and a sealing ring 8 is installed in the installation groove 7. Because of the sealing ring 8, the sealing ring 8 can play a role in preventing leakage during the operation of the flange body 3 and improve the sealing performance of the flange body 3.

[0025] The working principle of this utility model is as follows:

[0026] First, the sealing ring 8 is installed into the mounting groove 7. The sealing ring 8 can prevent leakage during the operation of the flange body 3. Then, the positioning hole 5 is used to position and fix the flange body 3 tightly. After the limiting sleeve 1 is put on the flange body 3, the gap left in the annular groove 206 by the snap-fit ​​block 205 allows the toothed block 4 to be restricted in the annular groove 206. After the flange body 3 is fixed by the limiting sleeve 1, the mounting block 201 is put on the pipe interface 6. Due to the inclined design of the pipe interface 6, the top block 203 in the square groove 202 can be driven to rotate through the fixed support of the connecting shaft 204, thereby pushing out the mounting block 201. The limiting groove 207 provides lateral limiting for the top block 203, eliminating the need for threaded fixing of the mounting block 201. Furthermore, in severe weather, loosening of pipe connections can lead to partial gas leakage. The through groove 211 allows chemical gas to enter the lifting groove 208 and move the movable plate 209 within the lifting groove 208. The spring 210 applies elastic force to the movable plate 209 when the pipe is reset, causing it to compress the gas and return it to the pipe until the pipe is resealed, effectively preventing chemical gas leakage. When the chemical pipe expands, the pipe interface 6 shifts, thereby driving the fixing component 2 and preventing the flange body 3 from being ejected, thus improving its explosion-proof and leak-proof performance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] The preferred embodiments of this patent have been described in detail above. However, this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.

Claims

1. An explosion-proof and leakage-proof safety device for a chemical pipeline flange, comprising a limiting leather sheath (1), characterized in that: The both ends of the limiting leather sheath (1) are respectively provided with fixing assemblies (2), the fixing assembly (2) comprises a mounting block (201), four square grooves (202) are formed in the outer side of the mounting block (201), a plurality of clamping blocks (205) are mounted on the inner side of the limiting leather sheath (1), limiting grooves (207) are formed in the both ends of the limiting leather sheath (1), lifting grooves (208) are formed in the clamping blocks (205), movable plates (209) are mounted in the lifting grooves (208), through grooves (211) are formed in the side of the clamping blocks (205) close to the central axis of the limiting leather sheath (1), two flange bodies (3) are sleeved in the limiting leather sheath (1), a plurality of tooth blocks (4) are fixedly mounted on the outer side of the two flange bodies (3), pipeline interfaces (6) are fixedly mounted on the side of the flange bodies (3).

2. The explosion-proof and leakage-proof safety device for chemical piping flange according to claim 1, characterized in that: The square grooves (202) are provided with top blocks (203), one end of the top block (203) is fixedly connected with a connecting shaft (204), and the both ends of the connecting shaft (204) are rotatably connected with the inner sides of the square grooves (202).

3. The explosion-proof and leakage-proof safety device for chemical piping flange according to claim 1, characterized in that: The inner side of the limiting leather sheath (1) is provided with ring grooves (206) at the positions corresponding to the clamping blocks (205), and the ring grooves (206) are fixedly connected with the clamping blocks (205).

4. The explosion-proof and leakage-proof safety device for chemical piping flange according to claim 3, characterized in that: The top of the movable plate (209) is fixedly provided with a spring (210), and one end of the spring (210) is fixedly connected with the ring groove (206).

5. The explosion-proof and leakage-proof safety device for chemical piping flange according to claim 1, characterized in that: The side of the flange body (3) is provided with two groups of positioning holes (5), the two groups of positioning holes (5) are symmetrically arranged about the center of the flange body (3), and the number of positioning holes (5) in each group is two.

6. The explosion-proof and leakage-proof safety device for chemical piping flange according to claim 1, characterized in that: The inner side of the flange body (3) is provided with a mounting groove (7), and the mounting groove (7) is provided with a sealing ring (8).

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