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Narrow space ring groove inner diameter measuring device and use method thereof

A measuring device and narrow space technology, applied in the field of measurement, can solve the problem that the inner diameter of the ring groove on the end face of the valve seat cannot be accurately measured, and achieve the effect of ensuring matching requirements, flexible operation, and accurate measurement data

Pending Publication Date: 2021-11-05
HARBIN TURBINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the inner diameter of the ring groove on the end face of the existing valve seat cannot be accurately measured, the present invention further proposes a device for measuring the inner diameter of the ring groove in a narrow space and its use method

Method used

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  • Narrow space ring groove inner diameter measuring device and use method thereof
  • Narrow space ring groove inner diameter measuring device and use method thereof
  • Narrow space ring groove inner diameter measuring device and use method thereof

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specific Embodiment approach 1

[0012] Specific implementation mode one: combine Figure 1-Figure 4 Describe this embodiment mode, a narrow space ring groove inner diameter measuring device described in this embodiment mode, which includes a sliding seat 2, a pull rod 7, a tapered block 9, a plurality of slider blocks 1, a plurality of cylindrical pins 3 and a plurality of stop pins 4. A tapered hole 2-1 is processed at the center of the sliding seat 2, and the tapered hole 2-1 is used to install the tapered block 9. Both the tapered hole 2-1 and the tapered block 9 are narrow at the top and wide at the bottom. On the one hand, the seat 2 provides guidance for the slider 1, and on the other hand, it plays the role of positioning the entire measuring device on the valve seat A1; a plurality of first through holes 2-2 are symmetrically processed around the tapered hole 2-1, each Each of the first through holes 2-2 is used to place the stop pin 4, and the inside of the slide seat 2 is processed with a second th...

specific Embodiment approach 2

[0013] Specific implementation mode two: combination Figure 1-Figure 4 Describe this embodiment, the device for measuring the inner diameter of a ring groove in a narrow space described in this embodiment, the central axis of the second through hole 2-3 on the slide seat 2 is perpendicular to the central axis of the tapered hole 2-1, so set, The relative position between the tapered block 9 at the bottom end of the pull rod 7 and each slider 1 is ensured, so that the pull rod 7 can drive the slide block 2 to slide outward when in use, thereby completing accurate measurement. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0014] Specific implementation mode three: combination Figure 1-Figure 4 Describe this embodiment, a device for measuring the inner diameter of an annular groove in a narrow space described in this embodiment, it also includes a plurality of springs 5, the springs 5 ​​provide elastic force for the contraction of the slider 1, so that the measuring device can automatically return to its original shape after use , easy to use, each spring 5 is installed in the groove 1-2, and each spring 5 is located between each stop pin 4 and the side wall of the groove 1-2, the other is the same as the specific embodiment one or two same.

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Abstract

The invention discloses a narrow space ring groove inner diameter measuring device and a use method thereof, which relate to a device for measuring the inner diameter of a ring groove of a steam turbine gulp valve seat and a use method of the measuring device, and aim to solve the problem that the inner diameter of an end face ring groove of an existing valve seat cannot be accurately measured. A conical hole, a plurality of first through holes and a second through hole are machined in the sliding seat, the sliding blocks are slidably installed in the second through hole and are symmetrically arranged about the center of the sliding seat, a hole is machined in one end of each sliding block, the other end of each sliding block is machined to be a conical face, a cylindrical pin is installed in each hole, a groove is machined in each sliding block, each stop pin penetrates through each first through hole in the sliding seat and is fixedly mounted in the groove of each sliding block, a conical block is fixedly mounted at the bottom end of the pull rod and is mounted in the conical hole of the sliding seat, and the outer surface of the conical block is in contact with the conical surface of each sliding block. The device is used for measuring the inner diameter of a ring groove of a steam turbine gulp valve seat and belongs to the field of measurement.

Description

technical field [0001] The invention specifically relates to a device for measuring the inner diameter of an annular groove of a gas supply valve seat of a steam turbine and a method for using the measuring device, belonging to the field of measurement. Background technique [0002] The valve seat and the valve housing of a certain type of steam turbine gas supply valve are interference fit. After the valve seat is assembled into the valve housing through liquid nitrogen shrinkage, the size of the ring groove on the upper end surface of the valve seat shrinks. Because the inner diameter of the ring groove fits the valve disc The tolerance is very strict and the size has changed after assembly. After assembly, it is necessary to re-test the inner diameter of the ring groove on the end face of the valve seat, and process the valve disc according to this size to ensure the matching requirements of the valve seat and the valve disc. Because the assembly position of the valve sea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B5/12
CPCG01B5/12
Inventor 于克付婷婷梁学双李洪喜成国富刘鹏李冬羽赵明
Owner HARBIN TURBINE
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