Unlock instant, AI-driven research and patent intelligence for your innovation.

Micro-pressure alternating testing machine and testing method

A testing machine and pressure technology, which is applied in fluid pressure converters, mechanical equipment, measuring devices, etc., can solve the problems of non-linear pressure jitter, accurate pressure control can only reach -50KPa, and accurate pressure control cannot be performed in the range, to achieve Good linearity of pressure alternation, reduced equipment cost, and convenient use

Inactive Publication Date: 2021-01-12
红旗仪表(长兴)有限公司
View PDF9 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing positive and negative pressure alternating equipment has the following disadvantages: 1. Two sets of pressure control systems are used. The minimum precise control pressure of the positive pressure control system can only reach 50KPa, and the minimum precise control pressure of the negative pressure control system can only reach - 50KPa, the range between -50KPa and 50KPa cannot be accurately controlled; 2. When switching between positive and negative pressure, it is necessary to switch the pressure control system, resulting in non-linear pressure jitter during the pressure alternating test; 3. It is necessary to connect an external positive pressure air source and a negative pressure air source

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Micro-pressure alternating testing machine and testing method
  • Micro-pressure alternating testing machine and testing method
  • Micro-pressure alternating testing machine and testing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Such as Figure 2-Figure 4 As shown: the present embodiment provides a micro-pressure alternating testing machine, including a power mechanism 2-1 and a cylinder 2-2, the power mechanism 2-1 is connected with the piston rod of the cylinder 2-2, and the cylinder 2-2 The air chamber on one side of the piston communicates with the debugging mechanism through a pipeline, and the debugging mechanism includes a pressure sensor 2-3, a pressure gauge 1-4 and a solenoid valve 2-4.

[0035] Specifically, in this embodiment, the power mechanism 2-1 is in transmission connection with the piston rod of the cylinder 2-2 through a transmission mechanism. The transmission mechanism includes a ball screw 2-8 and a connecting plate 2-5, one end of the ball screw 2-8 is connected to the output end of the power mechanism 2-1, and the other end of the ball screw 2-8 passes through the connecting plate 2 -5 and threaded connection with the connecting plate 2-5, the connecting plate 2-5 is f...

Embodiment 2

[0042] Such as Figure 5 As shown, this embodiment provides a test method using the micro-pressure alternating pressure testing machine of Embodiment 1, including the following steps: S1: select the range;

[0043] S2: set the number of times of alternation;

[0044] S3: Start the micro-pressure alternating pressure testing machine, if a pressure leak is detected, the system will alarm and automatically release the pressure;

[0045] S4: If no pressure leakage is detected, the alternating test is completed, and the machine is shut down after pressure relief.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a micro-pressure alternating testing machine and testing method, and the machine comprises a power mechanism and an air cylinder; the power mechanism is in transmission connection with a piston rod of the air cylinder, an air chamber on one side of a piston of the air cylinder is communicated with a debugging mechanism through a pipeline, and the debugging mechanism comprises a pressure sensor, a pressure gauge and an electromagnetic valve. The power mechanism drives the piston rod of the cylinder to move, so the equipment cost is greatly reduced, and the operation system is simple; according to the invention, pressure generation and pressure control can be realized, and the use is very convenient; according to the invention, the pressure is controlled by compressing and stretching the closed space, so the minimum pressure can also be controlled; the piston rod of the air cylinder is set to be zero pressure in the middle position, positive pressure can be generated by compressing the air cylinder leftwards, negative pressure can be generated by stretching the air cylinder rightwards, a positive-negative pressure switching transition point basically has no pressure fluctuation, the pressure alternating linearity is very good, and sine waves can be achieved.

Description

technical field [0001] The invention relates to the technical field of pressure alternating machines, in particular to a micro-pressure alternating pressure testing machine and a testing method. Background technique [0002] Existing positive and negative pressure alternating equipment such as figure 1 As shown, it includes a set of positive pressure control system and a set of negative pressure control system. The positive and negative pressure alternation is realized by controlling the switching of two sets of pressure control systems. When in use, the system starts the controller to control the positive pressure electric proportional valve 1-2 to output the alternating upper limit pressure value, and the controller controls the negative pressure electric proportional valve 1-6 to output the alternate lower limit pressure value. The positive pressure solenoid valve 1-3 is opened, the negative pressure solenoid valve 1-7 is closed, the gas enters the pipeline through the ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01D21/00F15B3/00
CPCG01D21/00F15B3/00
Inventor 林晓峰周春龙付文孙俊易善杨
Owner 红旗仪表(长兴)有限公司