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Container pressure-circulation testing device and method

A cyclic test and container pressure technology, which is applied in the direction of applying stable tension/pressure to test the strength of materials, etc., can solve the problems such as the inability to complete the sequential fatigue test of multiple containers, the low actual utilization efficiency of the pump, and the fatigue of the accumulator. To achieve the effect of simple operation, improved use efficiency and simple equipment

Inactive Publication Date: 2012-03-14
DALIAN UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Many pressure vessels need to be subjected to fatigue tests. After the tested vessel is pressurized to the specified pressure, the pressure is kept and released. During the process of maintaining and releasing pressure, the pressure from the pump must be released, or the pressure generated by the pump must be injected into the in the accumulator, thus, the actual utilization of the pump is not high
Patent 93112433.6 introduces a closed-loop pressure vessel fatigue test device, which is characterized by a computer control system and two electromagnetic proportional overflow valves controlled by the system, two check valves, two overflow valves and an accumulator Due to the use of the accumulator, the fluid pump cannot pressurize the other test vessel during the pressure release process of the test vessel, and the accumulator is also fatigued when the test vessel is fatigued.
Patent 200810060100 is mainly used for the fatigue test of the hydrogen storage container under the hydrogen environment. The high-pressure hydrogen storage container is used to fill the test container with hydrogen. experimenting
The pressure source of the utility model patent CN2518102 can only pressurize one container, and cannot complete the sequential fatigue test of multiple containers
The utility model patent ZL200620102510.0 consists of multiple pressure lifting systems to complete the pressurization, pressure maintenance and pressure relief operations. It has multiple boosters, reversing valves, pressure gauges, and sensors. The system is complex and the pressure is not achieved by a single pump. cycle

Method used

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  • Container pressure-circulation testing device and method
  • Container pressure-circulation testing device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Connect the first test container (91) and the second test container (92), open the fluid pump (20), and when the fluid pump (20) is opened, the first multi-way valve (51) and the second multi-way valve (52) is opened, so that the fluid flow flows to the first test container (91) through the first pipeline system, and the pressure is passed to the control system (12) through the first pressure sensor (71), when the first test container (91) When the pressure reaches the specified pressure, the control system (12) sends an instruction to make the fluid flow to the third multi-way valve (53) through the second pipeline system. At this time, the pressure of the first test container (91) is in a pressure maintaining state The second test container (92) is in a pressurized state;

[0016] After the pressure-holding time of the first test container (91) reaches the prescribed time, the fluid in the first test container (91) flows to the first pressure relief valve (41) through...

Embodiment 2

[0021] The second test method of the container pressure cycle test device: connect the first test container (91) and the second test container (92), and turn on the fluid pump (20). The multi-way valve (51) and the second multi-way valve (52) are opened, so that the fluid flows to the first test container (91) through the first pipeline system, and the pressure signal is transmitted to the control system ( 12), when the pressure of the first test container (91) reaches the specified pressure, the second multi-way valve (52) acts to make the first test container (91) pressurized under high pressure;

[0022] While the first test container (91) is under high pressure, the fluid from the fluid pump (20) is pressurized to the second test container (92) through the second pipeline system;

[0023] After the first test container (91) high pressure holding time reaches the specified time and the pressure of the second test container (92) does not reach the specified value, the contro...

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Abstract

The invention relates to a container pressure-circulation testing device and method, which belong to the fields of an inspecting-equipment technology and a control technology. The container pressure-circulation testing device consists of five pipeline systems, wherein the five pipeline systems are mutually associated, and a first pipeline system is sequentially communicated with a fluid-storing device, a fluid pump, a pressure display, a first multi-directional valve, a second multi-directional valve, a first high-pressure filter, a first pressure sensor and a first tested container; a secondpipeline system extends out from a multi-way part between the first multi-directional valve and the second multi-directional valve in the first pipeline system and is sequentially communicated with athird multi-directional valve, a second high-pressure filter, a second pressure sensor and a second tested container; a third pipeline system extends out from the second multi-directional valve and is sequentially communicated with a first pressure-releasing valve and the fluid-storing device; a fourth pipeline system extends out from the third multi-directional valve and is sequentially communicated with a second pressure-releasing valve and the fluid-storing device; and a fifth pipeline system extends out from the first multi-directional valve and is communicated with the fluid-storing device. The container pressure-circulation testing device and method have the beneficial effects that the service efficiency of a pump and a motor is improved, and energy is saved.

Description

technical field [0001] The invention belongs to the technical field of inspection equipment, relates to a pressure vessel inspection device, and is particularly suitable for a device and a method for performing a pressure vessel fatigue test by a fluid pressure application method. Background technique [0002] Many pressure vessels need to be subjected to fatigue tests. After the tested vessel is pressurized to the specified pressure, the pressure is kept and released. During the process of maintaining and releasing pressure, the pressure from the pump must be released, or the pressure generated by the pump must be injected into the In the accumulator, thus, the actual utilization efficiency of the pump is not high. Patent 93112433.6 introduces a closed-loop pressure vessel fatigue test device, which is characterized by a computer control system and two electromagnetic proportional overflow valves controlled by the system, two check valves, two overflow valves and an accumul...

Claims

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Application Information

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IPC IPC(8): G01N3/12
Inventor 由宏新胡军刘润杰韩冰周一卉戴行涛古海波
Owner DALIAN UNIV OF TECH
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