CN219388720U

CN219388720U - Safety diffusing device

Info

Publication number: CN219388720U
Application number: CN202320299465.6U
Authority: CN
Inventors: 邓宇光; 陈鹏
Original assignee: Guangzhou Panyu Xinao Gas Co ltd
Current assignee: Guangzhou Panyu Xinao Gas Co ltd
Priority date: 2023-02-23
Filing date: 2023-02-23
Publication date: 2023-07-21
Anticipated expiration: 2033-02-23

Abstract

The utility model relates to a safe diffusing device which comprises a valve body and a valve cover, wherein the valve cover is arranged at the top end of the valve body, the bottom end of the valve body is provided with an air inlet, the side wall of the top of the valve body is provided with an air outlet, a sleeve is arranged in the valve body, a plurality of through grooves are formed in the side walls of the top and the bottom of the sleeve, a fixed block and a sliding block are sleeved outside the sleeve, a spring is arranged between the fixed block and the sliding block, the function of diffusing stable pressure by overpressure is realized, and the adjusting precision is improved.

Description

Safety diffusing device

Technical Field

The utility model relates to the technical field of fuel gas conveying equipment, in particular to a safe diffusing device.

Background

The gas safety relief valve is used for monitoring the outlet pressure of all stages of pressure regulators of the whole equipment, can be automatically opened when the pressure is exceeded, and releases the overpressure gas so as to protect downstream equipment; the existing gas safety diffusing device is provided with a valve port and a diaphragm in a valve body, a tray is arranged on the diaphragm, a spring and an adjusting nut are arranged on the tray, the diaphragm is connected with the top of a valve rod, and a valve core matched with the valve port is arranged at the bottom of the valve rod. When the outlet pressure of the gas pressure regulator is lower than the set value of the relief pressure, the valve core is closed by the spring on the diaphragm. When the pressure of the fuel gas exceeds the set value of the relief pressure, the valve core is pushed to drive the valve rod to drive the diaphragm to move upwards to compress the spring, a gap is formed between the valve core and the valve port, and the fuel gas is discharged from the air outlet through the gap between the valve core and the valve port to be relieved. The gas diffusion valve has the advantages that when the valve rod runs up and down, deviation is easy to occur, and the adjustment precision is reduced.

Disclosure of Invention

The utility model aims to design a safe diffusing device to solve the technical problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a safe diffusing device, includes valve body and valve gap, the valve gap is installed the top of valve body, the bottom of valve body is equipped with the air inlet, be equipped with the gas outlet on the lateral wall at the top of valve body, the internally mounted of valve body has sleeve pipe and fixed block, the fixed block cup joints sheathed tube outer wall, be equipped with the slider on the outer wall of sheathed tube bottom, the slider with the inner wall of valve body with sheathed tube outer wall is clearance fit, the sleeve pipe is equipped with a plurality of logical grooves, the fixed block with be connected with the spring between the slider.

Further, the through grooves are formed in the side walls of the top and bottom of the sleeve.

Further, a piston sealing element and a dust ring are arranged at the joint of the sleeve and the sliding block, and the dust ring is positioned below the sealing element.

Further, the piston sealing element is a U-shaped rubber sealing ring.

Further, the fixed block is formed by integrally forming a disc and a circular tube.

Further, a limiting plate is arranged on the inner side wall of the valve body and located below the sliding block.

Compared with the prior art, the utility model has the beneficial effects that: according to the utility model, the sleeve and the fixed block are arranged in the valve body, the sliding block is arranged on the outer wall of the bottom of the sleeve, the through groove is arranged on the sleeve, the spring is arranged between the fixed block and the sliding block, the sliding block always slides along the outer wall of the sleeve, and the sliding block is matched with the through groove, so that the opening or closing of the device is controlled, namely, the device is opened when the sliding block moves upwards, the through groove is communicated with the air inlet, the gas pipeline is diffused, the sliding block automatically moves downwards after the diffusion is completed, the device is closed, and the sleeve and the sliding block cannot deviate in the moving process, so that the adjusting precision is higher.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a cross-sectional view of the present utility model;

the names of the components marked in the figures are as follows: 1. a valve body; 2. a valve cover; 3. an air inlet; 4. an air outlet; 5. a sleeve; 6. a fixed block; 7. a slide block; 8. a through groove; 9. a spring; 10. u-shaped rubber sealing rings; 11. a dust ring; 12. and a limiting plate.

Detailed Description

The following description of the present utility model will be made more fully hereinafter with reference to the accompanying drawings, in which it is shown, however, some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Examples: referring to fig. 1-2, a safety diffusing device comprises a valve body 1 and a valve cover 2, wherein the valve cover 2 is arranged at the top end of the valve body 1, the valve cover 2 and the valve body 1 can be connected through a flange in a sealing way, an air inlet 3 is arranged at the bottom end of the valve body 1, an air outlet 4 is arranged on the side wall of the top of the valve body 1, a sleeve 5 and a fixed block 6 are arranged in the valve body 1, the fixed block 6 is sleeved on the outer wall of the sleeve 5, in order to increase the contact area between the sleeve 5 and the fixed block 6, the sleeve 5 is prevented from being distorted and deformed, the fixed block 6 is formed by a disc and a circular tube in an integrated manner, and the circular tube is tightly attached to the outer wall of the sleeve 5; the top of the fixed block 6 is provided with a through hole, so that the upper surface and the lower surface of the fixed block 6 are always communicated, the outer wall of the bottom of the sleeve 5 is provided with a sliding block 7, the sliding block 7 is in clearance fit with the inner wall of the valve body 1 and the outer wall of the sleeve 5, the sleeve 5 is provided with a plurality of through grooves 8, the through grooves 8 are arranged on the side walls of the top and the bottom of the sleeve 5, a spring 9 is connected between the fixed block 6 and the sliding block 7, the through grooves 8 at the bottom of the sleeve 5 are matched with the sliding block 7, namely, when the sliding block 7 moves to a designated position at the bottom end, the air inlet 3 is not communicated with the through grooves 8 at the bottom of the sleeve 5, and when the sliding block 7 moves to the designated position, the air inlet 3 is communicated with the through grooves 8 at the bottom of the sleeve 5; in order to further improve the adjusting precision, a piston sealing element and a dust ring 11 are arranged at the joint of the sleeve 5 and the sliding block 7, the dust ring 11 is positioned below the sealing element, and the piston sealing element is a U-shaped rubber sealing ring 10; the limiting plate 12 is arranged on the inner side wall of the valve body 1, the limiting plate 12 is positioned below the sliding block 7, the sliding block 7 is prevented from sliding out of the sleeve 5, the limiting plate 12 is annular, and the middle is hollow, so that gas can not be influenced to flow from the gas inlet 3 to the through groove 8.

The working principle of the embodiment is as follows: according to the utility model, the spring 9 is regulated through the slide block 7 according to the relief pressure requirement, when the outlet pressure of the gas pressure regulator is lower than the relief pressure set value of the gas safety relief valve, the slide block 7 is positioned at the bottom end of the sleeve 5, and the through groove 8 at the bottom of the sleeve 5 is not communicated with the air inlet 3; when the outlet pressure of the gas pressure regulator is higher than the set value of the relief pressure of the gas safety relief valve, the gas enters the valve body 1 from the gas inlet 3, the sliding block 7 is pushed to move the compression spring 9 upwards along the outer wall of the sleeve 5, the sliding block 7 slides to the upper part of the through groove 8 at the bottom of the sleeve 5, so that the through groove 8 is communicated with the gas inlet 3, the gas respectively flows through the through grooves 8 at the bottom and the top of the sleeve 5, and finally is discharged from the gas outlet 4 to realize relief, when the outlet pressure of the gas pressure regulator is lower than the set value of the relief pressure of the gas safety relief valve, the gas pressure in the sleeve 5 is lower than the set value of the relief pressure, and the spring 9 pushes the sliding block 7 to slide downwards to a certain position, so that the through groove 8 at the bottom of the sleeve 5 is not communicated with the gas inlet 3; the sleeve 5 is fixedly connected with the valve cover 2, and the sliding block 7 always slides along the outer wall of the sleeve 5, so that the sleeve 5 and the sliding block 7 cannot deviate, and the adjusting precision is higher.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "upper," "lower," "left," "right," "front," "back," and the like are used herein for illustrative purposes only.

Claims

1. The utility model provides a safe diffusing device, includes valve body (1) and valve gap (2), valve gap (2) are installed the top of valve body (1), the bottom of valve body (1) is equipped with air inlet (3), be equipped with gas outlet (4) on the lateral wall at the top of valve body (1), its characterized in that: the inside mounting of valve body (1) has sleeve pipe (5) and fixed block (6), fixed block (6) cup joints the outer wall of sleeve pipe (5), be equipped with slider (7) on the outer wall of the bottom of sleeve pipe (5), slider (7) with the inner wall of valve body (1) with the outer wall of sleeve pipe (5) is clearance fit, sleeve pipe (5) are equipped with a plurality of logical grooves (8), fixed block (6) with be connected with spring (9) between slider (7).

2. The safety diffusing device of claim 1, wherein: the through grooves (8) are arranged on the side walls of the top and the bottom of the sleeve (5).

3. The safety diffusing device of claim 1, wherein: a piston sealing element is arranged at the joint of the sleeve (5) and the sliding block (7).

4. A safety diffusing device according to claim 3, wherein: the piston sealing piece is a U-shaped rubber sealing ring (10) and a dust ring (11), and the dust ring (11) is positioned below the sealing piece.

5. The safety diffusing device of claim 1, wherein: the fixed block (6) is formed by integrating a disc and a circular tube.

6. The safety diffusing device of claim 1, wherein: and a limiting plate (12) is arranged on the inner side wall of the valve body (1), and the limiting plate (12) is positioned below the sliding block (7).