CN218409552U

CN218409552U - Simple pressure reducing device with bypass system

Info

Publication number: CN218409552U
Application number: CN202222876893.9U
Authority: CN
Inventors: 余叙斌; 吴春波; 栾久成; 汤福朋
Original assignee: WUXI HUASHENG PRECISON MATERIAL CO Ltd
Current assignee: WUXI HUASHENG PRECISON MATERIAL CO Ltd
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-01-31
Anticipated expiration: 2032-10-31

Abstract

The utility model relates to an annealing furnace safety device, in particular to a simple pressure reducing device with a bypass system. It includes the trunk line that the level was arranged, and the one end of trunk line is imported, and the other end is the export, has set gradually first manometer, first valve, relief pressure valve, second valve and second manometer on the trunk line from its import to the export. The bypass pipeline is characterized by further comprising a bypass pipeline, one end of the bypass pipeline is communicated with the main pipeline between the inlet and the first pressure gauge, the other end of the bypass pipeline is communicated with the main pipeline between the outlet and the second pressure gauge, and a third valve is arranged on the bypass pipeline. The pressure reducing valve of the pressure reducing device can still stably supply air when being blocked, and has low cost and small occupied space.

Description

Simple pressure reducing device with bypass system

Technical Field

The utility model relates to an annealing stove safety device, annealing stove gas circuit system is with taking simple and easy pressure relief device of bypass system specifically says so.

Background

It is known in the steel strip processing industry that steel strips require heat treatment by an annealing furnace during the processing. Protective gas is required in the heat treatment process, and nitrogen is one of the commonly used protective gases. The nitrogen enters the hearth of the annealing furnace through the gas path system of the annealing furnace. In order to ensure the installation and save the cost, a simple pressure reducing device is generally arranged on the gas circuit system.

At present, traditional simple and easy pressure relief device includes the trunk line that the level was arranged, and the one end of trunk line is imported, and the other end is for exporting, has set gradually first manometer, first valve, relief pressure valve, second valve and second manometer from its import to export on the trunk line. When in use, the main pipeline is arranged in the gas path system of the annealing furnace. When the pressure relief valve works, the first valve and the second valve are both in an open state, when the pressure in the air circuit system is greater than the preset pressure of the pressure relief valve, the pressure relief port of the pressure relief valve is opened to perform air exhaust and pressure relief, and the pressure relief port of the pressure relief valve is closed until the pressure in the air circuit system is less than the preset pressure of the pressure relief valve, so that the pressure relief is completed. When the pressure reducing valve is blocked, the simple pressure reducing device cannot stably supply air. The solution proposed in the prior art is to connect two sets of simple pressure reducing devices in parallel on a gas circuit system to solve the above problems. However, the two sets of simple pressure reducing devices have high cost and occupy large space.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a take simple and easy pressure relief device of bypass system, this pressure relief device's relief pressure valve appear blockking up still can stabilize the air feed, and is with low costs, and the space that occupies is less.

In order to solve the problems, the following technical scheme is provided:

the utility model discloses a take bypass system's simple and easy pressure relief device includes the trunk line that the level was arranged, and the one end of trunk line is imported, and the other end is for exporting, has set gradually first manometer, first valve, relief pressure valve, second valve and second manometer from its import to the export on the trunk line. Its characteristics still include the bypass pipeline, and that section trunk line between bypass pipeline's one end and import and first manometer is linked together, and the other end of bypass pipeline is linked together with that section trunk line between export and the second manometer, has the third valve on the bypass pipeline.

The main pipeline is connected with the pressure reducing valve through a pipe joint, the pipe joint of the main pipeline is a main joint, and the pipe joint of the pressure reducing valve is an auxiliary joint; the sealing device is characterized in that the main joint and the auxiliary joint are rectangular, a U-shaped lug is arranged on the outer side face of the main joint, grooves which are continuously arranged are formed in the inner circle face of the lug, a sealing ring is fixed on the periphery of the outer side face of the auxiliary joint, the auxiliary joint is located in the lug, two vertical edges and the lower edge of the auxiliary joint are located in the grooves, and the sealing ring is extruded by the outer side face of the main joint to form sealing.

One side of the groove is positioned on the outer side surface of the main joint.

The main joint above the auxiliary joint is provided with a threaded hole, a bolt is connected in the threaded hole in a threaded manner, and one side of the bolt is abutted against the auxiliary joint.

By adopting the scheme, the method has the following advantages:

because the utility model discloses a take simple and easy pressure relief device of bypass system's trunk line one side has the bypass pipeline, and that section trunk line between the one end of bypass pipeline and import and first manometer is linked together, and that section trunk line between the other end of bypass pipeline and export and second manometer is linked together, has the third valve on the bypass pipeline. By utilizing the bypass system consisting of the third valve and the bypass pipeline, after the pressure reducing valve is blocked, the third valve can be opened to carry out bypass pressure relief, meanwhile, the first valve and the second valve are closed, the bypass valve is disassembled to be dredged and then is assembled in the main pipeline, the first valve and the second valve are opened, and the third valve is closed to carry out normal work. Therefore, when the pressure reducing valve is blocked, the simple pressure reducing device can still stably supply air. Moreover, the whole bypass system is a valve and a pipeline, so that the number of parts is small, the cost is low, and the occupied space is small.

Drawings

FIG. 1 is a schematic structural view of a simple pressure reducing device with a bypass system according to the present invention;

FIG. 2 is a schematic structural diagram of a main joint in the simple pressure reducing device with a bypass system according to the present invention;

FIG. 3 is a schematic top view of FIG. 2;

fig. 4 is a schematic structural view of the auxiliary joint in the simple pressure reduction device with the bypass system of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in 1~4, the utility model discloses a take simple and easy pressure relief device of bypass system includes trunk line 1 and the bypass pipeline 11 that the level was arranged, and trunk line 1's one end is imported, and the other end is for exporting, has set gradually first manometer 2, first valve 3, relief pressure valve 6, second valve 8 and second manometer 9 from its import to the export on trunk line 1. One end of the bypass pipeline 11 is communicated with the main pipeline 1 between the inlet and the first pressure gauge 2, the other end of the bypass pipeline 11 is communicated with the main pipeline 1 between the outlet and the second pressure gauge 9, and the bypass pipeline 11 is provided with a third valve 10. Whether the pressure reducing valve 6 is blocked can be known through the numerical values of the first pressure gauge 2 and the second pressure gauge 9.

The main pipeline 1 is connected with the pressure reducing valve 6 through a pipe joint, the pipe joint of the main pipeline 1 is a main joint 4, and the pipe joint of the pressure reducing valve 6 is an auxiliary joint 7. The main joint 4 and the auxiliary joint 7 are both rectangular, a U-shaped projection 12 is arranged on the outer side face of the main joint 4, a groove 13 which is continuously arranged is arranged on the inner circular face of the projection 12, a sealing ring 14 is fixed on the periphery of the outer side face of the auxiliary joint 7, the auxiliary joint 7 is positioned in the projection 12, two vertical edges and the lower edge of the auxiliary joint 7 are positioned in the groove 13, and the sealing ring 14 is extruded by the outer side face of the main joint 4 to form sealing. The plug-in type main joint 4 and the auxiliary joint 7 are adopted to replace the traditional flange and bolt 5 connection, so that a plurality of bolts 5 do not need to be disassembled and assembled, and the disassembling and assembling efficiency of the pressure reducing valve 6 is greatly improved.

To facilitate positioning of the secondary joint 7. The main joint 4 above the auxiliary joint 7 is provided with a threaded hole, a bolt 5 is connected with the threaded hole in an internal thread mode, and one side of the bolt 5 abuts against the auxiliary joint 7.

In this embodiment, the first valve 3, the second valve 8 and the third valve 10 are all stainless steel valves.

During the use, 2 pressure value on first manometer are higher than 9 values on second manometer greatly, can learn that relief pressure valve 6 blocks up, open bypass stainless steel valve at first, descend the back when 2 pressure values on first manometer, first valve 3 and second valve 8 after that, unscrew bolt 5, can take out and lift off relief pressure valve 6 and dredge or change. After recovery, the main first valve 3 and the second valve 8 are firstly opened, the flow of the pressure reducing valve 6 is regulated, then the third valve 10 is closed, the pressure reducing valve 6 is regulated again, and the flow of the ammonia gas is ensured.

The utility model discloses a take bypass system's simple and easy pressure relief device can realize normal decompression, plays the purpose of stable air feed, satisfies the safety in production requirement completely. Moreover, the device has the advantages of simple structure, extremely low cost, good effect, high safety and good stability. In addition, the device has no other potential safety hazards.

Claims

1. The simple pressure reducing device with the bypass system comprises a main pipeline (1) which is horizontally arranged, wherein one end of the main pipeline (1) is an inlet, the other end of the main pipeline (1) is an outlet, and a first pressure gauge (2), a first valve (3), a pressure reducing valve (6), a second valve (8) and a second pressure gauge (9) are sequentially arranged on the main pipeline (1) from the inlet to the outlet; its characterized in that still includes bypass pipeline (11), and that section main pipe (1) between one end and import and first manometer (2) of bypass pipeline (11) is linked together, and that section main pipe (1) between the other end of bypass pipeline (11) and export and second manometer (9) is linked together, has third valve (10) on bypass pipeline (11).

2. The simple pressure reducing device with the bypass system as claimed in claim 1, wherein the main pipe (1) is connected with the pressure reducing valve (6) through a pipe joint, the pipe joint of the main pipe (1) is a main joint (4), and the pipe joint of the pressure reducing valve (6) is a sub joint (7); the sealing device is characterized in that the main joint (4) and the auxiliary joint (7) are rectangular, a U-shaped convex block (12) is arranged on the outer side face of the main joint (4), grooves (13) which are continuously arranged are formed in the inner circular face of the convex block (12), a sealing ring (14) is fixed on the periphery of the outer side face of the auxiliary joint (7), the auxiliary joint (7) is located in the convex block (12), two vertical edges and the lower edge of the auxiliary joint (7) are located in the grooves (13), and the sealing ring (14) is extruded by the outer side face of the main joint (4) to form sealing.

3. Simple decompression device with bypass system according to claim 2, characterized in that one side of the groove (13) is located on the outer side of the main joint (4).

4. A simple pressure reducing device with a bypass system according to claim 2 or 3, characterized in that the main joint (4) above the secondary joint (7) is provided with a threaded hole, a bolt (5) is connected with the threaded hole in a threaded manner, and one side of the bolt (5) is abutted against the secondary joint (7).