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Gate valve body seat ring hole detecting device and application method

A technology of valve body seat and gate valve, which is applied in the field of gate valve body seat ring hole inspection tool, and can solve the problems such as inability to read values

Active Publication Date: 2016-10-12
NEWAY VALVE SUZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this feeler gauge belongs to the caliper, and the caliper can only perform qualitative analysis on the size, and cannot read the value

Method used

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  • Gate valve body seat ring hole detecting device and application method
  • Gate valve body seat ring hole detecting device and application method
  • Gate valve body seat ring hole detecting device and application method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] This embodiment provides a gate valve body seat ring hole inspection tool, which includes:

[0054] The oblique wedge 1, including a symmetrically arranged first oblique wedge 11 and a second oblique wedge 12;

[0055] Two measuring shafts 2, respectively connected to the top ends of the first oblique wedge 11 and the second oblique wedge 12, move synchronously with the first oblique wedge 11 and the second oblique wedge 12;

[0056] A steel ball 3 is provided between the first oblique wedge 11 and the second oblique wedge 12. Under the action of external force, the first oblique wedge 11 and the second oblique wedge 12 can use the steel ball 3 is the fulcrum rotation, which is pressed against the two seat rings adjacent to the first oblique wedge 11 and the second oblique wedge 12.

[0057] Such as image 3 As shown, the horizontal distance x between the two measuring shafts 2 is used to indicate the angle α between the two races. The larger the angle α between the races, the ...

Embodiment 2

[0075] This embodiment provides a method for detecting a seat ring hole by the gate valve seat ring hole inspection tool, which includes the following steps:

[0076] Put the seat ring into the seat ring hole of the valve body along the inner cavity of the flange of the valve body;

[0077] Deepen the inspection tool along the flange end face of the valve body of the gate valve into the valve body;

[0078] The first oblique wedge 11 and the second oblique wedge 12 are tightly abutted on the two seat rings respectively, and the measuring plate 4 is abutted against the end surface of the middle flange in parallel;

[0079] Measure the horizontal distance x between the two measurement shafts 2 and / or measure the distance y between the top end of the measurement shaft 2 and the top end of the measurement board 4.

[0080] According to national standards or industry standards, the seat ring opening and the angle between the two sealing surfaces of the gate valve body have a certain theoreti...

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Abstract

The invention provides a gate valve body seat ring hole detecting device, which is characterized in that a first tapered wedge and a second tapered wedge rotate by taking a steel ball as a mass point when the seat ring hole detecting device gets into the internal part of a gate valve body required to be detected so as to be compressed and attached to two seat rings adjacent to the first tapered wedge and the second tapered wedge respectively. Measuring shafts are fixed at the top ends of the first tapered wedge and the second tapered wedge respectively, so that the measuring shafts move in a mode of being synchronous to the first tapered wedge and the second tapered wedge. An x-value acquired by measured can reflect the size of an included angle alpha between the two seat rings inside the gate valve; and a y-value can reflect the open size b between the two seat rings. Therefore, the acquired x-value and the y-value can quantitatively reflect deviation between the processing size and the theoretical size of seat ring holes of the measured gate valve body, thereby being conducive to playing a guiding effect for field processing.

Description

Technical field [0001] The invention relates to the technical field of gate valves, in particular to a gate valve body seat ring hole inspection tool and a use method thereof. Background technique [0002] The cast steel wedge gate valve body belongs to a three-way structure. The flange passages on the left and right sides are processed with seat ring holes symmetrical to the flange center. The seat ring hole is welded with a seat ring, and the seat ring and the gate are formed by cooperation Sealing surface. Since the gate plate of the wedge gate valve itself is in a "V" shape, the two seat ring holes matched with it are also processed into a "V" shape, and there is a certain angle between the two seat ring holes, such as figure 1 Marked in the α, and there is a certain distance between the center lines of the two seat ring holes, such as figure 1 The b marked in is called the opening size. [0003] The angle between the opening size and the seat ring hole plays a very important ...

Claims

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Application Information

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IPC IPC(8): G01B5/00
CPCG01B5/00
Inventor 丁邦建富文华
Owner NEWAY VALVE SUZHOU
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