CN210719585U

CN210719585U - Device for pipeline leakage test and air pressure test of test device

Info

Publication number: CN210719585U
Application number: CN201921683896.2U
Authority: CN
Inventors: 马湘峰; 胡金明; 宋湘萍
Original assignee: Sinopec Fourth Construction Co Ltd
Current assignee: Sinopec Fourth Construction Co Ltd
Priority date: 2019-10-10
Filing date: 2019-10-10
Publication date: 2020-06-09
Anticipated expiration: 2029-10-10

Abstract

The utility model discloses a device for testing the pipeline leakage performance and the air pressure of a testing device, which comprises a cart and an air supply system, wherein the cart is provided with a bottom plate and a frame, an air supply bracket is fixedly arranged in the frame, an air supply system comprises two air cylinders fixed on the bottom plate, a main test pipe, a control pipe, a bypass pipe and an output pipe which are fixed on the air supply bracket, a test pressure gauge is arranged on the output pipe, the control pipe and the bypass pipe are connected in parallel between the output pipe and the test main pipe, an air supply pressure gauge is arranged on the test main pipe, one air cylinder is connected with the test main pipe through an air supply pipe I, the other air cylinder is connected with the test main pipe through an air supply pipe II, be equipped with valve I on air supply pipe I, be equipped with valve II on air supply pipe II, air supply pipe I passes through valve VI and is connected with the relief valve, and air supply pipe II passes through valve VII and is connected with the relief valve. The utility model discloses can improve factor of safety, work efficiency is high, low in labor strength, repeated work are few, be fit for the continuity of operation.

Description

Device for pipeline leakage test and air pressure test of test device

Technical Field

The utility model relates to a pipeline test device, especially a device that is used for experimental and atmospheric pressure test of test device pipeline leakage nature.

Background

The testing device is generally arranged indoors, the caliber of a pipeline is small, the wall of the pipeline is thin, the length of the pipeline is short, and a hydraulic test and a pressure test are not suitable for a leakage test and a pressure test, and a pneumatic test is usually adopted. In the process of building or moving a test chamber, the supply air source of the test chamber cannot be put into normal operation, and the air source for the pipeline leakage test and the air pressure test of the test device usually adopts bottled nitrogen. In order to ensure the safety and controllability of the test, a pressure reducing valve, a ball valve, a pressure gauge and other pipe valves are required to be arranged in the pressure test loop. The pressure test loop is complicated, the workload of installation, disassembly, inspection and the like of the pipelines before and after the test is large, the repeated working procedures are more, the continuous operation efficiency is low, and the safety is not high.

Disclosure of Invention

The utility model discloses a solve the technical problem that exists among the known art and provide a device that is used for experimental and the pneumatic test of test device pipeline leakage nature, factor of safety, the work efficiency height, low in labor strength, the repetitive operation that can improve the operation is few, be fit for the continuity of operation.

The utility model discloses a solve the technical scheme that technical problem that exists among the well-known technique took and be: a device for pipeline leakage test and air pressure test of a test device comprises a cart and an air supply system arranged on the cart, wherein the air supply system is made of stainless steel materials, the cart is provided with a bottom plate and a frame fixed on the bottom plate, an air supply support is fixedly arranged in the frame, the air supply system comprises two air cylinders fixed on the bottom plate and the frame, a test main pipe, a control pipe, a bypass pipe and an output pipe which are fixed on the air supply support, a test pressure gauge is arranged on the output pipe, the control pipe and the bypass pipe are connected in parallel between the output pipe and the test main pipe, a valve III, a pressure reducing valve and a valve IV are sequentially arranged on the control pipe along the air supply direction, a valve V is arranged on the bypass pipe, and an air supply pressure gauge is arranged on the test main pipe, one gas cylinder is connected with the test main pipe through a gas supply pipe I, the other gas cylinder is connected with the test main pipe through a gas supply pipe II, a valve I is arranged on the gas supply pipe I, a valve II is arranged on the gas supply pipe II, the gas supply pipe I is connected with a safety valve through a valve VI, the gas supply pipe II is connected with the safety valve through a valve VII, and the safety valve is fixed at the top of the frame.

The output interface of the output pipe is arranged on one side of the frame.

The lower part of the cart is provided with a tool box and a workbench.

The cart is formed by welding C-shaped steel.

The test main pipe, the control pipe, the bypass pipe and the output pipe are all fixed by adopting a single-hole pipe clamp and a spring nut.

The pipe valve of the gas supply system is made of stainless steel and is connected by a clamping sleeve.

The safety valve is a spring type pressure relief valve.

The valve I, the valve II, the valve III, the valve IV, the valve V, the valve VI and the valve VII are all ball valves.

Four universal wheels with self-locking are arranged below the bottom plate.

The utility model has the advantages and positive effects that: the adoption is with the movable structure of gas supply system installation on the shallow, and the quick travel of being convenient for can shift whole device rapidly to the testing device's that needs to detect the position, can reduce gas supply system's transport working strength by a wide margin, avoids gas supply system's dismouting repeatedly, can simplify experimental preliminary stage preparation work greatly. And the utility model discloses compact structure, the operation and the observation of being convenient for, low in labor strength, repeated work is few, is fit for the continuity of operation. And simultaneously the utility model discloses work efficiency is high, can improve continuous operation efficiency, can improve test operation's factor of safety, safe and reliable.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a side view of FIG. 1;

fig. 3 is a flow chart of the gas supply system of the present invention.

Detailed Description

For further understanding of the contents, features and effects of the present invention, the following embodiments are exemplified and will be described in detail with reference to the accompanying drawings:

referring to fig. 1 to 3, the device for testing the pipeline leakage performance and the air pressure of the device comprises a cart and an air supply system installed on the cart, wherein the air supply system is made of stainless steel. The cart is provided with a bottom plate 1-1 and a frame 1-2 fixed on the bottom plate 1-1, and an air supply support 1-3 is fixedly arranged in the frame 1-2. The gas supply system comprises two gas cylinders 2-1 fixed on the bottom plate 1-1 and the frame 1-2, and a test main pipe 2-4, a control pipe 2-5, a bypass pipe 2-6 and an output pipe 2-7 fixed on the gas supply support 1-3, wherein the output pipe 2-7 is provided with a test pressure gauge 2-8, the control pipe 2-5 and the bypass pipe 2-6 are connected in parallel between the output pipe 2-7 and the test main pipe 2-4, the control pipe 2-5 is sequentially provided with a valve III 2-11, a pressure reducing valve 2-10 and a valve IV 2-9 along the gas supply direction, the bypass pipe 2-6 is provided with a valve V2-18, and the test main pipe 2-4 is provided with a gas supply pressure gauge 2-12, one gas cylinder 2-1 is connected with the test main pipe 2-4 through a gas supply pipe I2-3, the other gas cylinder 2-1 is connected with the test main pipe 2-4 through a gas supply pipe II 2-2, a valve I2-13 is arranged on the gas supply pipe I2-3, a valve II 2-14 is arranged on the gas supply pipe II 2-2, the gas supply pipe I2-3 is connected with a safety valve 2-17 through a valve VI 2-16, the gas supply pipe II 2-2 is connected with the safety valve 2-17 through a valve VII 2-15, and the safety valve 2-17 is fixed at the top of the frame 1-2.

In this embodiment, the output port of the output tube 2-7 is disposed at one side of the frame 1-2, which facilitates quick access to the test tube. The lower part of the cart is provided with a tool box 1-4 and a workbench 1-5, which is convenient for test operation. The cart is formed by welding C-shaped steel, and can be convenient for the installation and fixation of pipelines. The test main pipe 2-4, the control pipe 2-5, the bypass pipe 2-6 and the output pipe 2-7 are all fixed by adopting a single-hole pipe clamp and a spring nut. The pipe valves of the gas supply system are all made of stainless steel. Because the pipe valve is light in weight, the pipe valve is connected according to a flow chart, and the pipeline is fixed on the C-shaped steel by using the single-hole pipe clamp and the spring nut, so that the strength requirement of the pipe valve in the use process can be met. The safety valves 2-17 are spring type pressure relief valves, and the use safety of the whole device can be guaranteed. The valves I2 to 13, the valves II 2 to 14, the valves III 2 to 11, the valves IV 2 to 9, the valves V2 to 18, the valves VI 2 to 16 and the valves VII 2 to 15 are all ball valves. Four self-locking universal wheels 1-6 are arranged below the bottom plate 1-1, so that the movement and the fixation are convenient.

The utility model discloses a theory of operation:

the method comprises the steps of opening a gas cylinder valve connected with a valve I, opening the valve I, enabling nitrogen to reach a valve III through the valve I, displaying gas supply pressure through a gas supply pressure gauge in the middle, opening the valve III, enabling the nitrogen to reach a pressure reducing valve, opening a valve IV, enabling the pressure value of a test pressure gauge to reach a test pressure value by adjusting the pressure reducing valve, stopping adjustment of the pressure reducing valve, observing the pressure gauge value of a gas inlet pipeline of the test device, closing the valve IV when the pressure gauge value is consistent with the test pressure value, and checking whether the pipeline in the test device leaks or not.

When the pressure of the gas cylinder connected with the valve I cannot meet the pressure condition of the leakage test, the valve I is closed, the gas cylinder connected with the valve II is opened, and nitrogen reaches the valve III through the valve II, so that the leakage test is continued.

When the pressure of the gas cylinder connected with the valve I cannot meet the leakage test and the gas cylinder needs to be replaced, the valve I is closed, the gas cylinder valve connected with the valve I is closed, the valve VI is opened, and the gas cylinder is replaced after the pressure and the gas in the pipeline are exhausted. Similarly, the replacement of the gas cylinder connected with the valve II is processed in the same way as the method.

When the pressure reducing valve needs to be overhauled, closing the valve III and the valve IV and overhauling the pressure reducing valve; and opening the valve V to perform the air tightness test, so that the test can be continuously performed without interruption.

Although the preferred embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above-mentioned embodiments, which are only illustrative and not restrictive, and those skilled in the art can make many forms without departing from the spirit and scope of the present invention, which is within the scope of the present invention.

Claims

1. A device for pipeline leakage test and air pressure test of a test device is characterized by comprising a cart and an air supply system arranged on the cart, wherein the air supply system is made of stainless steel materials, the cart is provided with a bottom plate and a frame fixed on the bottom plate, an air supply support is fixedly arranged in the frame, the air supply system comprises two air cylinders fixed on the bottom plate and the frame, a test main pipe, a control pipe, a bypass pipe and an output pipe which are fixed on the air supply support, a test pressure gauge is arranged on the output pipe, the control pipe and the bypass pipe are connected in parallel between the output pipe and the test main pipe, a valve III, a pressure reducing valve and a valve IV are sequentially arranged on the control pipe along the air supply direction, a valve V is arranged on the bypass pipe, and an air supply pressure gauge is arranged on the test main pipe, one gas cylinder is connected with the test main pipe through a gas supply pipe I, the other gas cylinder is connected with the test main pipe through a gas supply pipe II, a valve I is arranged on the gas supply pipe I, a valve II is arranged on the gas supply pipe II, the gas supply pipe I is connected with a safety valve through a valve VI, the gas supply pipe II is connected with the safety valve through a valve VII, and the safety valve is fixed at the top of the frame.

2. The apparatus of claim 1, wherein the output port of the output pipe is disposed on one side of the frame.

3. The apparatus for testing the leak property of the test apparatus pipe and the pneumatic pressure test according to claim 1, wherein a tool box and a work table are provided at a lower portion of the cart.

4. The apparatus of claim 1, wherein the cart is welded using C-section steel.

5. The apparatus according to claim 4, wherein the main test pipe, the control pipe, the bypass pipe and the output pipe are fixed by using a single-hole pipe clamp and a spring nut.

6. The apparatus of claim 1, wherein the tube valves of the gas supply system are made of stainless steel and are connected by a ferrule.

7. The apparatus of claim 1, wherein the safety valve is a spring-loaded relief valve.

8. The apparatus of claim 1, wherein said valve I, said valve II, said valve III, said valve IV, said valve V, said valve VI and said valve VII are ball valves.

9. The apparatus according to claim 1, wherein four self-locking universal wheels are mounted under the bottom plate.