Safety cover for chemical pipeline

Abstract

The utility model discloses a chemical pipeline safety cover, which relates to the technical field of chemical safety, and comprises a pipeline connecting assembly, an installation mechanism is installed outside the pipeline connecting assembly, a safety protection mechanism is installed outside the installation mechanism, the safety protection mechanism comprises a detection cylinder, one end of the detection cylinder is provided with a pressure relief groove, and the other end of the detection cylinder is provided with a pressure relief valve. According to the utility model, the movable disc is pushed to move through air pressure, the second spring is compressed, the movable disc moves to drive the connecting rod and the sealing piston to move, and when the sealing piston is separated from the pressure relief groove, air in the detection cylinder moves towards the interior of the air storage bag, so that pressure relief is performed, and deformation and rupture caused by overlarge internal pressure of the mounting mechanism are prevented; and the mounting mechanism is protected, and material conveying safety in chemical production is ensured.

Description

Technical Field

[0001] This utility model relates to the field of chemical safety technology, and in particular to a safety cover for chemical pipelines. Background Technology

[0002] Chemical pipelines are used to transport toxic, harmful, and corrosive media. They are mainly used in industries such as pharmaceuticals, metallurgy, environmental protection, water supply and drainage, and petroleum. They are widely used. When the internal pressure of the pipeline is too high, liquid or gas leakage may occur, so safety covers need to be installed at the connection points of chemical pipelines.

[0003] For example, CN222255462U discloses a safety cover for a chemical pipeline. The middle area of ​​the pipeline is fixedly connected by two flanges. The top of the flanges is tightly fitted with the safety cover. The two ends of the safety cover are tightly fitted to the outer wall of the pipeline by a clamping mechanism. The clamping mechanism includes a flexible material, which is fixedly connected to the inner wall of the safety cover.

[0004] In existing technologies, when a leak occurs inside a chemical pipeline, the air pressure inside the safety shield will gradually increase. When the air pressure increases to a level that exceeds the safety shield's tolerance, the safety shield will deform and rupture due to overpressure, and the high temperature, high pressure, or toxic and harmful chemicals inside will be ejected instantly, affecting the safety of surrounding personnel. Utility Model Content

[0005] The purpose of this invention is to solve the problem in the existing technology that if the air pressure inside the safety cover is not released in time, the safety cover will deform and rupture due to overpressure, and a chemical pipeline safety cover is proposed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a safety cover for chemical pipelines, comprising a pipeline connection assembly, an installation mechanism installed on the outside of the pipeline connection assembly, a safety protection mechanism installed on the outside of the installation mechanism, the safety protection mechanism comprising a detection cylinder, a pressure relief groove opened at one end of the detection cylinder, a sealing piston sleeved inside the pressure relief groove, a connecting rod fixedly connected to one end of the sealing piston, a movable disk fixedly connected to one end of the connecting rod, an air storage bag fixedly connected to one end of the detection cylinder, and a pressure sensor installed on the outside of the detection cylinder, the probe of the pressure sensor passing through one side of the detection cylinder.

[0007] Preferably, a guide rod is slidably connected to one side of the movable disk, and the end of the guide rod is fixedly connected to the inside of the detection cylinder.

[0008] Preferably, a second spring is sleeved on the outside of the guide rod, and the second spring is disposed between the detection cylinder and the moving disk.

[0009] Preferably, the installation mechanism includes an outer shell, two outer shells overlapping on one side, and a support block fixedly connected inside the two outer shells, one end of the support block abutting against the outside of the pipe connection assembly.

[0010] Preferably, telescopic rods are fixedly connected to both ends of the inner surface of the outer casing, and a positioning block is fixedly connected to one end of each telescopic rod. One end of the positioning block abuts against the outside of the flange of the pipe connection assembly.

[0011] Preferably, a first spring is sleeved on the outside of the telescopic rod, and the first spring is disposed between the outer shell and the positioning block.

[0012] Preferably, a fixing bolt is installed between the two outer shells, and a sealing gasket is fixedly connected to the inner side of each of the two outer shells.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] 1. In this utility model, the moving disc is driven by air pressure, the second spring is compressed, the movement of the moving disc drives the connecting rod and the sealing piston to move. When the sealing piston separates from the pressure relief groove, the gas inside the detection cylinder moves into the gas storage bag, thereby relieving pressure and preventing the installation mechanism from deforming and breaking due to excessive internal pressure. This protects the installation mechanism and ensures the safety of material transportation in chemical production.

[0015] 2. In this utility model, two outer shells are installed on the outside of the pipe connection assembly. The support block can be used to support and fix the pipe connection assembly. The positioning block abuts against the outside of the flange of the pipe connection assembly. The spring force of the first spring can push the positioning block to always keep in contact with the flange, so that the flange can exert uniform and continuous pressure on the gasket, effectively preventing fluid leakage inside the pipe connection assembly. Attached Figure Description

[0016] Figure 1 A three-dimensional structural diagram of a safety cover for chemical pipelines is provided for this utility model;

[0017] Figure 2 This utility model provides a schematic diagram of the disassembly structure of the installation mechanism for a safety cover for chemical pipelines;

[0018] Figure 3 This utility model provides a schematic diagram of the disassembly structure of the safety protection mechanism of a chemical pipeline safety cover;

[0019] Figure 4 This utility model provides a schematic diagram of the planar structure of a safety protection mechanism for a chemical pipeline safety cover.

[0020] Legend: 1. Pipe connection assembly; 2. Installation mechanism; 21. Outer shell; 22. Fixing bolt; 23. Support block; 24. Positioning block; 25. First spring; 26. Telescopic rod; 27. Sealing gasket; 3. Safety protection mechanism; 31. Detection cylinder; 32. Pressure sensor; 33. Pressure relief groove; 34. Moving plate; 35. Sealing piston; 36. Air storage bag; 37. Connecting rod; 38. Guide rod; 39. Second spring. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] Example 1: As Figure 1 - Figure 4 As shown, this utility model provides a safety cover for chemical pipelines, including a pipeline connection assembly 1, an installation mechanism 2 installed on the outside of the pipeline connection assembly 1, and a safety protection mechanism 3 installed on the outside of the installation mechanism 2. The safety protection mechanism 3 includes a detection cylinder 31, a pressure relief groove 33 at one end of the detection cylinder 31, a sealing piston 35 sleeved inside the pressure relief groove 33, a connecting rod 37 fixedly connected to one end of the sealing piston 35, a moving disk 34 fixedly connected to one end of the connecting rod 37, an air storage bag 36 fixedly connected to one end of the detection cylinder 31, a pressure sensor 32 installed on the outside of the detection cylinder 31, and the probe of the pressure sensor 32 passing through one side of the detection cylinder 31; a guide rod 38 slidably connected to one side of the moving disk 34, the end of the guide rod 38 fixedly connected to the inside of the detection cylinder 31; a second spring 39 sleeved on the outside of the guide rod 38, and the second spring 39 is disposed between the detection cylinder 31 and the moving disk 34.

[0024] Pipe connection assembly 1 consists of two pipes and a flange connecting the pipes. When a leak occurs at the connection of pipe connection assembly 1, the internal air pressure of installation mechanism 2 increases. When pressure sensor 32 detects that the pressure exceeds the normal range, it will trigger an alarm signal, indicating that there may be a leak. When the internal air pressure of installation mechanism 2 exceeds the tolerance range, the air pressure pushes the moving plate 34 to move. The moving plate 34 slides outside the guide rod 38, and the fixed moving plate 34 makes linear motion. The second spring 39 is compressed. The movement of the moving plate 34 drives the connecting rod 37 and the sealing piston 35 to move. When the sealing piston 35 separates from the pressure relief groove 33, the gas inside the detection cylinder 31 moves into the gas storage bag 36, thereby relieving pressure and preventing the internal pressure of installation mechanism 2 from becoming too high, causing deformation and rupture. This protects installation mechanism 2 and ensures the safety of material transportation in chemical production.

[0025] Example 2: Figure 1 and Figure 2 As shown, the installation mechanism 2 includes an outer shell 21, with one side of the two outer shells 21 overlapping. A support block 23 is fixedly connected inside the two outer shells 21, and one end of the support block 23 abuts against the outside of the pipe connection assembly 1. Telescopic rods 26 are fixedly connected to both ends inside the outer shells 21. A positioning block 24 is fixedly connected to one end of the telescopic rod 26, and one end of the positioning block 24 abuts against the outside of the flange of the pipe connection assembly 1. A first spring 25 is sleeved on the outside of the telescopic rod 26, and the first spring 25 is disposed between the outer shell 21 and the positioning block 24. A fixing bolt 22 is installed between the two outer shells 21, and a sealing gasket 27 is fixedly connected to the inside of the two outer shells 21.

[0026] Two outer shells 21 are fitted over the outside of the pipe connection assembly 1 and fixed to the outside of the pipe connection assembly 1 by fixing bolts 22. A sealing gasket 27 is provided inside the outer shell 21 to improve the sealing performance after the two outer shells 21 are fixed. Multiple support blocks 23 are provided inside the two outer shells 21 to support and fix the pipe connection assembly 1. The positioning block 24 abuts against the outside of the flange of the pipe connection assembly 1. The elastic force of the first spring 25 can push the positioning block 24 to always keep it in contact with the flange, so that the flange can exert uniform and continuous pressure on the gasket, effectively preventing fluid leakage inside the pipe connection assembly 1.

[0027] The usage and working principle of this device are as follows: Two outer shells 21 are fitted over the outside of the pipe connection assembly 1 and fixed with fixing bolts 22. The sealing gasket 27 improves the sealing performance. The positioning block 24 abuts against the outside of the flange of the pipe connection assembly 1. The elastic force of the first spring 25 can push the positioning block 24 to always keep it in contact with the flange, improving the sealing performance of the connection of the pipe connection assembly 1. When a leak occurs at the connection of the pipe connection assembly 1, the internal air pressure of the installation mechanism 2 increases. When the pressure sensor 32 detects that the pressure exceeds the normal range, it will trigger an alarm signal. When the internal air pressure of the installation mechanism 2 exceeds the tolerance range, the air pressure pushes the moving plate 34 to move, the second spring 39 is compressed, and the movement of the moving plate 34 drives the connecting rod 37 and the sealing piston 35 to move. The gas inside the detection cylinder 31 moves into the gas storage bag 36 to release the pressure.

[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A safety cover for chemical pipelines, comprising a pipeline connection assembly (1), characterized in that: An installation mechanism (2) is installed on the outside of the pipe connection assembly (1), and a safety protection mechanism (3) is installed on the outside of the installation mechanism (2). The safety protection mechanism (3) includes a detection cylinder (31). A pressure relief groove (33) is opened at one end of the detection cylinder (31). A sealing piston (35) is sleeved inside the pressure relief groove (33). A connecting rod (37) is fixedly connected to one end of the sealing piston (35). A moving disk (34) is fixedly connected to one end of the connecting rod (37). An air storage bag (36) is fixedly connected to one end of the detection cylinder (31). A pressure sensor (32) is installed on the outside of the detection cylinder (31). The probe of the pressure sensor (32) passes through one side of the detection cylinder (31).

2. A safety cover for a chemical pipeline according to claim 1, characterized in that: A guide rod (38) is slidably connected to one side of the movable disk (34), and the end of the guide rod (38) is fixedly connected to the inside of the detection cylinder (31).

3. A safety cover for a chemical pipeline according to claim 2, characterized in that: A second spring (39) is sleeved on the outside of the guide rod (38), and the second spring (39) is disposed between the detection cylinder (31) and the moving disk (34).

4. A safety cover for a chemical pipeline according to claim 1, characterized in that: The installation mechanism (2) includes an outer shell (21), with one side of the two outer shells (21) overlapping, and a support block (23) fixedly connected inside the two outer shells (21), with one end of the support block (23) abutting against the outside of the pipe connection assembly (1).

5. A safety cover for a chemical pipeline according to claim 4, characterized in that: Telescopic rods (26) are fixedly connected to both ends of the inner shell (21). A positioning block (24) is fixedly connected to one end of the telescopic rod (26). One end of the positioning block (24) abuts against the outside of the flange of the pipe connection assembly (1).

6. A safety cover for a chemical pipeline according to claim 5, characterized in that: The telescopic rod (26) is sleeved with a first spring (25), which is located between the outer shell (21) and the positioning block (24).

7. A safety cover for a chemical pipeline according to claim 4, characterized in that: A fixing bolt (22) is installed between the two outer shells (21), and a sealing gasket (27) is fixedly connected to the inner side of each of the two outer shells (21).

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