Simulation system for testing service life of valve by simulating working condition of airborne solid particles

Abstract

The utility model discloses a simulation system for testing the service life of a valve by simulating the working condition of airborne solid particles, which comprises an airborne solid particle conveying device, a first pipeline, a second pipeline and a material receiving mechanism, one side of the valve to be tested is arranged at the output end of the first pipeline, and the other side of the valve to be tested is arranged at the input end of the second pipeline; the airborne solid particle conveying device comprises a gas supply unit, a third pipeline and a fourth pipeline, and a particle storage bin is arranged on the fourth pipeline; the diameter of the third pipeline is larger than that of the fourth pipeline, and the third pipeline, the fourth pipeline and the first pipeline are connected to three outlets of the first tee joint respectively. According to the utility model, real pressure loss and local loss coefficients in front of and behind the valve under the working condition of airborne solid particles can be calculated, flow and pressure characteristics at the moment of opening and closing the valve are analyzed, erosion of airborne solid particle flow in a real pipeline to the valve is simulated, and meanwhile, the system is convenient to operate and high in testing efficiency.

Description

TECHNICAL FIELD

[0001] The utility model belongs to valve technical field, especially, relate to a simulation system of valve life test under the condition of simulating gas-borne solid particles.

BACKGROUND

[0002] The particles carried in the production and transportation process of oil and natural gas will impact the pipe wall and cause erosion, and the pipes are connected by valves, and the high-speed particles in the gas can cause wear to the internal parts of the valve, especially the sealing surface and the valve core, resulting in a decrease in the sealing performance of the valve and the occurrence of internal leakage. If this continues, the particles may cause the valve to jam or fail to work normally, thereby causing system failure. In extreme cases, it may cause the entire system to be shut down for maintenance. Therefore, during the design stage of the valve, product life simulation tests must be conducted on the actual use conditions to test the real reliability of the product.

[0003] In the prior art, a pipeline valve wear test device disclosed in Chinese Patent No. CN214251895U includes a gas delivery mechanism, a sand particle delivery mechanism, a sealing cavity, and a nozzle and a clamping mechanism arranged in the sealing cavity. The gas delivery mechanism has a first output end for outputting gas through the first output end. The sand particle delivery mechanism has a second output end for outputting sand particles through the second output end. When testing, the gas source of the gas delivery mechanism and the feeder of the sand particle delivery mechanism are opened respectively, and the gas and the sand particles enter the nozzle, and then the mixture of the gas and the sand particles is sprayed to the valve through the nozzle, and the erosion of the valve surface is detected. On the one hand, the mixture of the gas and the sand particles is sprayed to the valve surface through the nozzle during detection, and the erosion of the internal parts of the valve cannot be detected, and the erosion of the internal parts of the valve caused by the gas and the sand particles during the opening and closing of the valve cannot be simulated. On the other hand, the gas delivery mechanism and the sand particle delivery mechanism are separately arranged, and the gas and the sand particles are delivered to the nozzle, and then sprayed to the valve by the nozzle. The erosion of the internal parts of the valve caused by the high-speed gas carrying the high-speed particles cannot be simulated. Therefore, the life detection is not accurate.

[0004] Therefore, it is necessary to provide a simulation system for testing the life of a valve under the condition of simulating gas-borne solid particles to solve the above technical problems.

UTILITARY MODEL CONTENTS

[0005] The main purpose of the utility model is to provide a simulation system for testing the life of a valve under the condition of simulating gas-borne solid particles, which can calculate the real pressure loss and local loss coefficient before and after the valve under the condition of gas-borne solid particles, analyze the flow and pressure characteristics during the opening and closing of the valve, simulate the erosion of the valve caused by the gas-borne solid particles in the pipeline, and is easy to operate and has high testing efficiency.

[0006] This utility model achieves the above-mentioned objective through the following technical solution: a simulation system for testing the lifespan of a valve under simulated airborne solid particle conditions, comprising an airborne solid particle conveying device that outputs a mixture of gas and solid particles, a first pipe disposed at the output end of the airborne solid particle conveying device, a second pipe disposed at the output end of the first pipe, and a receiving mechanism disposed at the output end of the second pipe. The valve to be tested is disposed on one side at the output end of the first pipe and on the other side at the input end of the second pipe. The airborne solid particle conveying device includes a gas supply unit and a third pipe and a fourth pipe disposed at two outlets of the gas supply unit, respectively. A particle storage chamber is disposed on the fourth pipe. The particle storage chamber is in a closed state, and both the inlet and outlet of the particle storage chamber are connected to the fourth pipe. The diameter of the third pipe is larger than the diameter of the fourth pipe. The output ends of the third pipe, the fourth pipe, and the first pipe are respectively connected to the three outlets of a first tee. After the gas supply unit introduces gas, a pressure gradient exists between the third pipe and the fourth pipe, thereby causing the gas in the fourth pipe to automatically flow into the valve to be tested along with the solid particles in the particle storage chamber.

[0007] Furthermore, the air supply unit includes an air source, an air compressor connected to the air source, and a fifth pipe connected to the output end of the air compressor. The output end of the fifth pipe is provided with a second three-way valve, and the input end of the third pipe and the input end of the fourth pipe are respectively connected to the other two outlets of the second three-way valve.

[0008] Furthermore, a check valve to prevent material backflow is provided between the discharge port of the granule storage bin and the first three-way valve.

[0009] Furthermore, a first pressure gauge is installed on the first pipeline to measure the pressure inside the first pipeline, and the first pressure gauge is installed at the input front end of the valve to be tested.

[0010] Furthermore, the second pipeline is sequentially equipped with a second pressure gauge for measuring the pressure inside the second pipeline and a regulating valve for adjusting the pressure inside the second pipeline. The second pressure gauge is located at the output end of the valve to be tested.

[0011] Furthermore, the receiving mechanism includes a receiving funnel disposed at the end of the second pipe and a receiving container disposed below the receiving funnel.

[0012] Furthermore, a dustproof cloth is provided on top of the receiving container.

[0013] Compared with the prior art, the simulation system for testing valve life under simulated air-borne solid particle working condition has the beneficial effects that: the diameter of the third pipeline is larger than that of the fourth pipeline, the pressure in the fourth pipeline is greater than that in the first pipeline during the process from opening to stabilization of the valve to be tested, and the solid particles in the particle storage bin can automatically flow into the fourth pipeline due to the pressure difference between the third pipeline and the fourth pipeline, so that the solid particles in the particle storage bin can automatically flow into the valve to be tested together with the gas, and the valve to be tested can be tested after being opened, and the erosion of the valve to be tested by air-borne solid particles under working condition can be simulated, the valve to be tested can be tested, the operation is simple, and the testing efficiency is high; after the valve is closed, the gas source continuously outputs gas, the gas pressure in the fourth pipeline increases, the pressure at the inlet of the upper end of the particle storage bin increases, the pressure at the outlet of the lower end of the particle storage bin increases due to the closing of the valve to be tested, until the pressure at the inlet and the outlet of the particle storage bin is balanced, and the solid particles in the particle storage bin stop flowing downward, so that the solid particles in the particle storage bin stop flowing into the fourth pipeline after the valve to be tested is closed, the solid particles in the particle storage bin can stop flowing into the valve to be tested automatically, the structure is simple, and the operation is convenient. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a three-dimensional structure schematic view of the test simulation system for testing valve life under simulated air-borne solid particle working condition.

[0015] The numbers in the figure represent:

[0016] 100 - test simulation system for testing valve life under simulated air-borne solid particle working condition; 200 - valve to be tested;

[0017] 1 - air-borne solid particle conveying device, 11 - third pipeline, 12 - fourth pipeline, 13 - particle storage bin, 14 - fifth pipeline, 15 - check valve, 16 - second three-way pipe, 17 - first three-way pipe;

[0018] 2 - first pipeline, 21 - first pressure gauge;

[0019] 3 - second pipeline, 31 - second pressure gauge, 32 - regulating valve;

[0020] 4 - material receiving mechanism, 41 - material receiving hopper, 42 - material receiving container, 43 - dust cloth.

DETAILED DESCRIPTION

[0021] Please refer toFigure 1 The embodiment is a simulation system 100 for simulating the working condition of air-borne solid particles to test the service life of a valve, which comprises an air-borne solid particle conveying device 1 for outputting a gas-solid particle mixture, a first pipeline 2 arranged at the output end of the air-borne solid particle conveying device 1, a second pipeline 3 arranged at the output end of the first pipeline 2, and a material receiving mechanism 4 arranged at the output end of the second pipeline 3, wherein one side of a valve 200 to be tested is arranged at the output end of the first pipeline 2 and the other side is arranged at the input end of the second pipeline 3, the gas-solid particle mixture in the air-borne solid particle conveying device 1 enters the valve 200 to be tested through the first pipeline 2, and after the test is completed, the gas-solid particle mixture enters the material receiving mechanism 4 through the second pipeline 3, and the solid particles are recycled by the material receiving mechanism 4.

[0022] The air-borne solid particle conveying device 1 comprises a gas supply unit, a third pipeline 11 and a fourth pipeline 12 arranged at two outlets of the gas supply unit respectively, and a particle storage bin 13 arranged on the fourth pipeline 12, wherein the particle storage bin 13 is in a closed state, the inlet and outlet of the particle storage bin 13 are connected to the fourth pipeline 12, the diameter of the third pipeline 11 is larger than that of the fourth pipeline 12, the output end of the third pipeline 11, the output end of the fourth pipeline 12, and the input end of the first pipeline 2 are connected to three outlets of a first three-way pipe 17 respectively, and after the gas supply unit is supplied with gas, a pressure gradient exists in the third pipeline 11 and the fourth pipeline 12, so that the gas in the fourth pipeline 12 automatically flows into the output end of the fourth pipeline 12 together with the solid particles in the particle storage bin 13, and then the gas and the solid particles flow into the valve 200 to be tested through the first pipeline 2 for testing. The solid particles herein can be replaced by powder according to actual conditions, and the specific substance is not limited herein.

[0023] The gas supply unit comprises a gas source, an air compressor connected to the gas source, and a fifth pipeline 14 connected to the output end of the air compressor, wherein the output end of the fifth pipeline 14 is provided with a second three-way pipe 16, and the input end of the third pipeline 11 and the input end of the fourth pipeline 12 are connected to the other two outlets of the second three-way pipe 16 respectively.

[0024] The particle storage bin 13 is connected to the fourth pipeline 12, and the inlet and outlet of the particle storage bin 13 are connected to the fourth pipeline 12, a check valve 15 is arranged between the outlet of the particle storage bin 13 and the first three-way pipe 17, and the check valve 15 can prevent the problem of backflow of the solid particles. A closure cover is arranged at the top end of the particle storage bin 13, solid particles are added into the particle storage bin 13 by opening the closure cover, the closure cover is closed after the addition is completed, so that the particle storage bin 13 is in a closed state, and the solid particles in the particle storage bin 13 can flow into the first pipeline 12.

[0025] The diameter of the third pipeline 11 is larger than the diameter of the fourth pipeline 12, and there is a difference in pipe diameter between the third pipeline 11 and the fourth pipeline 12. During the process of opening the valve to be tested 200 to stable, the flow of the third pipeline 11 is large, the flow rate is high and the pressure is low, the flow of the fourth pipeline 12 is small, the relative flow rate is low and the pressure is high, the pressure in the fourth pipeline 12 is greater than the pressure in the first pipeline 2, a large pressure difference will be generated at the first three-way pipe 17, the pressure at the inlet of the particle storage bin 13 is greater than the pressure at the outlet, so that the solid particles in the particle storage bin 13 automatically flow into the fourth pipeline 12, without manual switch, and without additional switch, the gas in the fourth pipeline 12 automatically flows into the first pipeline 2 with the solid particles in the particle storage bin 13, after a period of time, when the valve to be tested 200 is completely opened and stable, the flow in the first pipeline 2 is stable, the pressure difference at the first three-way pipe 17 decreases, and the solid particles flow into the first pipeline 2 uniformly by relying on the airflow in the fourth pipeline 12, the gas and solid particles flowing into the first pipeline 2 automatically flow into the valve to be tested 200, which can simulate the working condition of gas-carrying solid particles pipeline and test the valve to be tested 200, and the operation is simple and the test efficiency is high. After the valve to be tested 200 is closed, the material in the first pipeline 2 is blocked and the pressure increases, and the gas source is still continuously outputting gas, the pressure of the gas in the fourth pipeline 12 increases, the pressure at the inlet of the upper end of the particle storage bin 13 increases, and a short-term vortex is generated in the particle storage bin 13, which avoids the accumulation of granular material, especially powder, in the bin. Because the valve to be tested 200 is closed, the pressure at the outlet of the lower end of the particle storage bin 13 also increases, and the pressure at the inlet and outlet of the particle storage bin 13 is balanced, so that the solid particles in the particle storage bin 13 are prevented from flowing out. Therefore, after the valve to be tested 200 is opened, the solid particles in the particle storage bin 13 automatically flow into the valve to be tested 200 together with the gas for testing, and after the valve to be tested 200 is closed, the solid particles in the particle storage bin 13 automatically stop flowing into the fourth pipeline 12, without manual switch and without additional switch. The solid particles in the particle storage bin 13 can automatically flow into or stop flowing into the valve to be tested 200, which is simple in structure and convenient to operate.

[0026] A first pressure gauge 21 for measuring the pressure in the first pipeline 2 is arranged on the first pipeline 2, and the first pressure gauge 21 is arranged at the input front end of the valve to be tested 200. The first pressure gauge 21 is used for measuring the pressure upstream of the valve to be tested 200, and can also read the instantaneous pressure in the pipeline during the opening or closing process of the valve to be tested 200.

[0027] The second pipeline 3 is sequentially provided with a second pressure gauge 31 for measuring the pressure in the second pipeline 3 and an adjusting valve 32 for adjusting the pressure in the second pipeline 3, the second pressure gauge 31 is arranged at the output rear end of the valve to be tested 200 and is used for testing the pressure downstream of the valve to be tested 200, according to the pressure value output by the second pressure gauge 31, the parameter of the adjusting valve 32 is adjusted so as to adjust the pressure of the downstream pipeline, and different pressure difference working conditions are set.

[0028] The first pressure gauge 21 and the second pressure gauge 31 can calculate the real pressure loss and the local loss coefficient before and after the valve in the gas-borne solid particle working condition and analyze the flow and pressure characteristics at the opening and closing moment of the valve.

[0029] The receiving mechanism 4 comprises a receiving hopper 41 arranged at the end of the second pipeline 3 and a receiving container 42 arranged below the receiving hopper 41, the receiving hopper 41 is arranged upside down, the upper end of the receiving hopper 41 has a small diameter and the lower end has a large diameter, the opening gradually expands, which is beneficial to reduce the flow rate of the material in the pipeline and make the kinetic energy of the material in the pipeline attenuate and sink into the receiving container 42. In order to prevent the flying of solid particles and dust, a dustproof cloth 43 is arranged above the receiving container 42, which can avoid the flying of solid particles and dust, ensure the neatness, cleanliness and hygiene of the construction site and protect the health of workers.

[0030] The above only describes some embodiments of the present application. For ordinary skilled in the art, without departing from the inventive concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application.

Claims

1. A simulation system for simulating the testing of valve life under airborne solid particle service conditions, characterized by: The utility model provides a kind of valve test device, it includes the gas-borne solid particle conveying device of output gas and solid particle mixture, first pipeline being arranged in the output end of the gas-borne solid particle conveying device, second pipeline being arranged in the output end of the first pipeline and receiving mechanism being arranged in the output end of the second pipeline, and the valve to be tested is arranged in the output end of the first pipeline on one side, and is arranged in the input end of the second pipeline on the other side;The gas-borne solid particle conveying device includes gas supply unit and third pipeline and fourth pipeline being arranged in the two outlets of the gas supply unit respectively, and the fourth pipeline is provided with particle storage bin;The particle storage bin is in closed state, and the inlet and outlet of the particle storage bin are connected with the fourth pipeline, the diameter of the third pipeline is greater than the diameter of the fourth pipeline, the output end of the third pipeline, the output end of the fourth pipeline and the input end of the first pipeline are respectively connected on the three outlets of first three-way, and there is pressure gradient in the third pipeline and the fourth pipeline after the gas supply unit is connected with gas, so that the gas in the fourth pipeline carries solid particles in the particle storage bin and automatically flows into the valve to be tested.

2. A simulation system for simulating the life of a valve in a simulated airborne solid particle service condition as claimed in claim 1, characterized in that: The gas supply unit includes gas source, air compressor connected with the gas source and fifth pipeline connected in the output end of the air compressor, and the output end of the fifth pipeline is provided with second three-way, and the input end of the third pipeline and the input end of the fourth pipeline are respectively connected on the other two outlets of the second three-way.

3. A simulation system for simulating the life of a valve in a simulated airborne solid particle service condition as defined in claim 1, characterized in that: The outlet of the particle storage bin and the first three-way are provided with check valve preventing material backflow.

4. The simulation system for simulating the field conditions of airborne solid particles to test the valve life as claimed in claim 1, wherein: The first pipeline is provided with first pressure gauge measuring pressure in the first pipeline, and the first pressure gauge is arranged in the input front end of the valve to be tested.

5. A simulation system for simulating the service life of a valve under the working conditions of airborne solid particles as claimed in claim 1, characterized in that: The second pipeline is sequentially provided with second pressure gauge measuring pressure in the second pipeline and adjusting valve adjusting pressure in the second pipeline, and the second pressure gauge is arranged in the output rear end of the valve to be tested.

6. A simulation system for simulating the service life of a valve under the working conditions of airborne solid particles as claimed in claim 1, characterized in that: The receiving mechanism includes receiving hopper arranged in the end of the second pipeline and receiving container arranged below the receiving hopper.

7. A simulation system for simulating the life of a valve in a simulated airborne solid particle service condition as claimed in claim 6, characterized in that: The top of the receiving container is provided with dust cloth.

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