Valve seat testing device of float ball valve and testing method thereof

A floating ball valve and testing device technology, applied in the direction of measuring device, testing of mechanical parts, testing of machine/structural parts, etc., can solve the problems of inability to obtain relevant data of valve seat deformation, complicated operation, etc., and achieve simple and effective testing methods. Easy-to-operate, easy-to-achieve effects

Inactive Publication Date: 2011-11-23
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a floating ball valve seat test device and its test method in order t

Method used

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  • Valve seat testing device of float ball valve and testing method thereof
  • Valve seat testing device of float ball valve and testing method thereof
  • Valve seat testing device of float ball valve and testing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0106] (1) Simulate the deformation of the valve seat during the assembly process of the floating ball valve

[0107] First, install the valve seat to be tested in the test device, and install the test device according to figure 2 The structure shown is installed.

[0108] Then, use the pressure cylinder to load the load to 2940N (0.3 ton force), and reset the displacement measuring instrument to zero. Every 20 minutes, increase the load by 19600N (2 ton force), and record the measured value of the displacement measuring instrument until the load reaches 137200N (14 ton force). Among them, the recorded loading load value and displacement value are shown in Table 1.

[0109] Then, use the tested load value and displacement value to draw the valve seat load-displacement curve (the curve starts from the abscissa displacement value 0mm and the ordinate loading load 0N point). Based on the seat load-displacement curve that meets the requirements of the floating ball valve, comp...

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PUM

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Abstract

The invention discloses a valve seat testing device of a float ball valve. The device disclosed by the invention comprises a stand mechanism, a pressure cylinder, a displacement measuring instrument and an angular measuring instrument, wherein the pressure cylinder is fixed at the bottom in the stand mechanism; a stressed sensor and a rigidity reinforcing seat are sequentially and fixedly arranged at the upper part of the pressure cylinder from bottom to top; and an analog float ball valve is clamped between the rigidity reinforcing seat and the upper part in the stand mechanism. The invention also discloses a testing method for the valve seat testing device of the float ball valve. The testing method disclosed by the invention comprises the following steps: carrying out analog testing onthe deformation data of the valve seat in the assembling course of the float ball valve and the valve ball starting torsion of the float ball valve under actual working conditions; and determining whether the valve seat meets the use requirements of the float ball valve or not according to testing data. The valve seat testing device disclosed by the invention simplifies the structure of the floatball valve and is easy to operate; and the testing method of the valve seat testing device is simple, convenient and effective, judges whether the valve seat meets the use requirements or not by means of two different types of parameters and is convenient for users to inspect whether the valve seat to be replaced meets the use requirements of the valve.

Description

technical field [0001] The invention relates to a valve seat testing device, in particular to a floating ball valve seat testing device and a testing method thereof. Background technique [0002] Floating ball valve is a pressure piping component. It controls the pressure, flow and temperature of the conveying medium by changing the section of the pipeline and the flow of the medium. [0003] Among them, the valve ball is the opening and closing part of the floating ball valve. Moreover, the valve ball is floating and is supported by two valve seats. Under the action of the medium pressure, the valve ball itself can produce a certain amount of displacement and press tightly on the valve seat sealing ring at the outlet end to ensure the outlet seal. The sealing material of the valve seat of the floating ball valve is engineering plastics such as polytetrafluoroethylene, nylon, and polyoxymethylene, and the material of the valve ball is metal. [0004] During the opening an...

Claims

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Application Information

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IPC IPC(8): G01M13/00
Inventor 刘长军田硕轩福贞姜凯华涂家彬熊信文万松张静谈建平
Owner EAST CHINA UNIV OF SCI & TECH
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