Explosion-proof protection pipe joint for inflammable gas pipeline

Abstract

The utility model relates to the technical field of pipe joints, in particular to an anti-explosion protection pipe joint for an inflammable gas pipeline, which comprises a connecting pipe, two ends of the connecting pipe are connected with flange plates, an adjustable pressure balance structure is arranged on the side wall of the connecting pipe, and the adjustable pressure balance structure comprises a pressure relief connecting pipe. The pressure relief connecting pipe is connected to the side wall of the connecting pipe, and a fixed connecting pipe is connected to the side wall of the pressure relief connecting pipe. By means of a pressure relief connecting pipe, a fixed connecting pipe, a conical piston, a reset spring, a movable piston and an adjusting bolt in the adjustable pressure balance structure and interaction of all the components, the device can balance air pressure, then the pipe wall is protected against bursting, a pipeline is safer during use, and the service life of the pipeline is prolonged. Therefore, the problem that the pipe wall can burst is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe joints, in particular to an explosion-proof protection pipe joint for flammable gas pipelines. Background Art

[0002] Pipe fittings are the connection tools between pipes and are the detachable connection points between components and pipes. They play an indispensable and important role in pipe fittings and are one of the two main components of hydraulic pipes.

[0003] Pipe fittings are used for straight-line connections such as instruments. The connection forms include socket welding or threaded connection. They are mainly used for small-diameter low-pressure pipelines, for locations that require frequent assembly and disassembly, or for final adjustments of pipelines using threaded pipe fittings. Pipe fittings are prone to explosion when passing high-pressure gas or liquid during use, causing serious danger. Therefore, it is necessary to propose pipe fittings with explosion-proof function. In view of the above problems, it is necessary to provide an explosion-proof protective pipe fitting for flammable gas pipelines. Utility Model Content

[0004] The purpose of the utility model is to provide an explosion-proof protection pipe joint for flammable gas pipelines to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An explosion-proof protective pipe joint for a flammable gas pipeline comprises a connecting pipe, both ends of the connecting pipe are connected with flanges, and a pressure balancing structure can be adjusted on the side wall of the connecting pipe;

[0007] The adjustable pressure balancing structure includes a pressure relief connecting pipe, which is connected to the side wall of the connecting pipe, a fixed connecting pipe is connected to the side wall of the pressure relief connecting pipe, a conical piston is connected in the inner cavity of the fixed connecting pipe and on the end surface of the pressure relief connecting pipe, a return spring is connected to the end surface of the conical piston, a movable piston is connected on the end surface of the return spring and in the inner cavity of the fixed connecting pipe, and an adjusting bolt is connected to the end surface of the movable piston.

[0008] As a preferred solution of the utility model, the connection method of the pressure relief connecting pipe and the fixed connecting pipe is a threaded connection.

[0009] As a preferred solution of the utility model, the contact surface between the tapered piston and the pressure relief connecting pipe is a tapered structure.

[0010] As a preferred solution of the utility model, the connection mode between the fixed connecting tube and the tapered piston is a sliding connection.

[0011] As a preferred solution of the utility model, the connection mode between the fixed connecting tube and the movable piston is a sliding connection.

[0012] As a preferred solution of the utility model, the connection method between the fixed connection pipe and the adjusting bolt is a threaded connection.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] In the utility model, an adjustable pressure balancing structure is provided in the explosion-proof protection pipe joint for flammable gas pipelines, so that the pressure relief connecting pipe, the fixed connecting pipe, the conical piston, the return spring, the movable piston, the adjusting bolt and the interaction between the various components in the adjustable pressure balancing structure are utilized, so that the device can balance the gas pressure design, so that during the use of the explosion-proof protection pipe joint for flammable gas pipelines, the pressure between the conical piston and the pressure relief connecting pipe can be adjusted according to the gas pressure in the pipeline. When the gas pressure in the pipeline increases, the conical piston is pushed upward, so as to reduce the pressure of the gas pressure on the pipe wall, thereby protecting the pipe wall from bursting, making the pipeline safer when in use, thereby solving the problem of pipe wall bursting. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the front and side structures of the utility model;

[0016] Figure 2 For this utility model Figure 1 Schematic diagram of the cross-section structure;

[0017] Figure 3 This is a schematic diagram of the structure of the adjustable pressure balance structure of the utility model;

[0018] Figure 4 For this utility model Figure 3 Schematic diagram of the explosion structure.

[0019] In the figure: 1. connecting pipe; 2. flange; 3. adjustable pressure balance structure; 301. pressure relief connecting pipe; 302. fixed connecting pipe; 303. tapered piston; 304. return spring; 305. movable piston; 306. adjusting bolt. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0021] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings, and several embodiments of the present invention are given. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0022] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may also be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this article includes any and all combinations of one or more related listed items.

[0024] For example, please refer to Figure 1-3 , the utility model provides a technical solution:

[0025] An explosion-proof protective pipe joint for a flammable gas pipeline comprises a connecting pipe 1, flanges 2 are connected to both ends of the connecting pipe 1, and an adjustable pressure balance structure 3 is provided on the side wall of the connecting pipe 1;

[0026] In this embodiment, reference Figure 1 , Figure 3 and Figure 4The adjustable pressure balancing structure 3 includes a pressure relief connecting pipe 301, which is connected to the side wall of the connecting pipe 1, and a fixed connecting pipe 302 is connected to the side wall of the pressure relief connecting pipe 301, and a conical piston 303 is connected in the inner cavity of the fixed connecting pipe 302 and on the end surface of the pressure relief connecting pipe 301, and a return spring 304 is connected to the end surface of the conical piston 303, and a movable piston 305 is connected on the end surface of the return spring 304 and in the inner cavity of the fixed connecting pipe 302, and an adjusting bolt 306 is connected to the end surface of the movable piston 305, and an adjusting bolt 306 is connected to the fixed connecting pipe 302. The adjusting bolt 306 is rotated under the condition that the connection mode with the adjusting bolt 306 is a threaded connection. When the adjusting bolt 306 is rotated, the movable piston 305 is moved downward under the condition that the connection mode between the fixed connecting pipe 302 and the movable piston 305 is a sliding connection. When the movable piston 305 moves downward, the return spring 304 is compressed, thereby increasing the pressure between the pressure relief connecting pipe 301 and the tapered piston 303. When the gas pressure in the pipeline increases, the tapered piston 303 is pushed upward under the condition that the connection mode between the fixed connecting pipe 302 and the tapered piston 303 is a sliding connection.

[0027] Furthermore, the connection method between the pressure relief connecting tube 301 and the fixed connecting tube 302 is a threaded connection, the contact surface between the conical piston 303 and the pressure relief connecting tube 301 is a conical structure, the connection method between the fixed connecting tube 302 and the conical piston 303 is a sliding connection, the connection method between the fixed connecting tube 302 and the movable piston 305 is a sliding connection, and the connection method between the fixed connecting tube 302 and the adjusting bolt 306 is a threaded connection, which makes the device safer when in use.

[0028] The working process of the utility model is as follows: when using the explosion-proof protective pipe joint for flammable gas pipelines, first connect the device to the pipeline, and then according to the size of the gas pressure in the pipeline, rotate the adjusting bolt 306 under the condition that the connection mode between the fixed connecting pipe 302 and the adjusting bolt 306 is a threaded connection. When the adjusting bolt 306 rotates, the movable piston 305 moves downward under the condition that the connection mode between the fixed connecting pipe 302 and the movable piston 305 is a sliding connection. When the movable piston 305 moves downward, the return spring 304 is compressed, thereby increasing the pressure between the pressure relief connecting pipe 301 and the tapered piston 303. When the gas pressure in the pipeline increases, the tapered piston 303 is pushed upward under the condition that the connection mode between the fixed connecting pipe 302 and the tapered piston 303 is a sliding connection, thereby reducing the pressure of the gas pressure on the pipe wall, thereby protecting the pipe wall from bursting, and making the pipeline safer when in use.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An explosion-proof protective pipe joint for a flammable gas pipeline, comprising a connecting pipe (1), characterized in that: Both ends of the connecting pipe (1) are connected with flanges (2), and an adjustable pressure balancing structure (3) is provided on the side wall of the connecting pipe (1); The adjustable pressure balancing structure (3) comprises a pressure relief connecting pipe (301), the pressure relief connecting pipe (301) being connected to the side wall of the connecting pipe (1), the side wall of the pressure relief connecting pipe (301) being connected to a fixed connecting pipe (302), a conical piston (303) being connected in the inner cavity of the fixed connecting pipe (302) and located on the end surface of the pressure relief connecting pipe (301), a return spring (304) being connected on the end surface of the conical piston (303), a movable piston (305) being connected on the end surface of the return spring (304) and located in the inner cavity of the fixed connecting pipe (302), and an adjusting bolt (306) being connected on the end surface of the movable piston (305).

2. The explosion-proof protective pipe joint for flammable gas pipeline according to claim 1, characterized in that: The pressure relief connecting pipe (301) and the fixed connecting pipe (302) are connected in a threaded manner.

3. The explosion-proof protective pipe joint for flammable gas pipeline according to claim 1, characterized in that: The contact surface between the tapered piston (303) and the pressure relief connecting pipe (301) is a tapered structure.

4. The explosion-proof protective pipe joint for flammable gas pipeline according to claim 1, characterized in that: The fixed connection tube (302) and the tapered piston (303) are connected in a sliding manner.

5. The explosion-proof protective pipe joint for flammable gas pipeline according to claim 1, characterized in that: The fixed connection tube (302) and the movable piston (305) are connected in a sliding manner.

6. The explosion-proof protective pipe joint for flammable gas pipeline according to claim 1, characterized in that: The fixed connection pipe (302) and the adjusting bolt (306) are connected in a threaded manner.

Images