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Rubber diaphragm antifatigue test device

A testing device and rubber diaphragm technology, which is applied in the direction of applying repetitive force/pulsation force to test the strength of materials, etc. problems, to achieve the effect of high test efficiency, smooth reciprocating operation, and reduced impact force

Inactive Publication Date: 2009-04-29
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to break the monopoly of foreign diaphragms, many rubber research institutes and enterprises in my country have invested a lot of manpower and material resources in the research and development of high-performance cloth rubber diaphragms, but so far no high-performance regulator diaphragms have come out. No one cares about the testing equipment for fatigue resistance performance parameters

Method used

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  • Rubber diaphragm antifatigue test device
  • Rubber diaphragm antifatigue test device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: A test device suitable for a DN25 balance diaphragm.

[0022] Motor 3 is a mechanical clutch motor, voltage: 380V three-phase; current: 0.9A; power: 370W; speed: 2850r / min; counter 2 is a mechanical counter; air pump 5 is a manual air compressor.

[0023] Two eccentric wheels are designed in the device of this embodiment, and the size of the stroke needs to be adjusted according to the shape of the diaphragm and the actual stroke. For adjustment needs, once the stroke is determined, the secondary eccentric wheel and the primary eccentric shaft are fixed with screws. The primary eccentricity is 50mm, the secondary eccentricity is 46mm, and the adjustment range of the total eccentricity is generally 4-96mm. The reciprocating stroke is twice the total eccentricity.

[0024] The working stroke of the diaphragm DN25 is 18mm, and the set air pressure is 0.4Mpa. After adjusting the total eccentricity of the primary and secondary eccentric wheels to 9mm, tighten ...

Embodiment 2

[0026] Embodiment 2: A test device suitable for the main adjustment diaphragm of a NORVAL / G DVGW voltage regulator.

[0027] The motor is a DC variable frequency speed regulating motor, voltage: 380V three-phase; current: 1A; power: 300W; speed: 1750r / min; the counter is a photoelectric counter; the air pump is an electric air compressor.

[0028] Two eccentric wheels are designed in the device of this embodiment, and the size of the stroke needs to be adjusted according to the shape of the diaphragm and the actual stroke. For adjustment needs, once the stroke is determined, the secondary eccentric wheel and the primary eccentric shaft are fixed with screws. The primary eccentricity is 50mm, the secondary eccentricity is 46mm, and the adjustment range of the total eccentricity is generally 4-96mm. The reciprocating stroke is twice the total eccentricity.

[0029] The diameter of the diaphragm is 630mm, the reciprocating stroke is 80mm, the air pressure is 0.12Mpa, adjust the ...

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Abstract

The invention relates to a fatigue resistance testing device for a rubber membrane. A reciprocating transmission mechanism adopts a double-eccenter connecting rod type structure and is positioned on the top of the device; the top end of a reciprocating rod is connected with a counter; the reciprocating transmission mechanism is in driving communication with a motor arranged on the right top of the device; the bottom end of the reciprocating rod is in mechanical connection with a membrane clamping mechanism; the bottom of the center of the clamping mechanism is provided with a balancing spring; the right end of the membrane clamping mechanism is communicated with an air pressure pump through a valve; the middle part of an air inlet pipe is connected in series with an air pressure sensor and an air pressure meter; the middle part of the reciprocating rod is provided with a fixing piece; the upper part and the lower part of the reciprocating rod are provided with a sliding sleeve respectively; and the sliding sleeve restricts the moving direction of the reciprocating rod. The fatigue resistance testing device has the advantages of simple structural principle, large testing range, high efficiency, convenient operation and use, safe and reliable operation and good automation degree.

Description

Technical field: [0001] The invention relates to a fatigue test instrument capable of simulating the running state of a rubber diaphragm, in particular to a rubber diaphragm fatigue resistance test device. Background technique: [0002] Rubber diaphragms are widely used in gas pressure regulators. In gas pressure regulators, rubber diaphragms play the role of pressure sensing and flow control. At present, there are two main types of rubber diaphragms used in gas pressure regulators: the main regulator diaphragm and balance membrane; the function of the main adjustment diaphragm is to sense the change of the outlet pressure, and control the opening and closing of the valve port by driving the valve port rod to move up and down, so as to adjust the intake air volume and maintain the outlet pressure within the design range to ensure The safety of the gas entering the household; the function of the balance diaphragm is to offset the unbalanced force on the valve disc. Usually, ...

Claims

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Application Information

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IPC IPC(8): G01N3/36
Inventor 马建伟陈韶娟沈盛伟董正委许文娜李鹏
Owner QINGDAO UNIV
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