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Opening reducing device and processing method for reducing opening of air suction pipe of compressor

A suction pipe and necking technology, applied in the field of compressors, can solve the problems of leakage, uneven gap between the shell suction pipe and the enthalpy increasing suction pipe, etc., so as to reduce leakage, the gap is small and uniform, and the leakage is reduced. the effect of risk

Active Publication Date: 2015-07-08
ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to provide a shrinking device and a processing method for shrinking the suction pipe of the compressor, so as to solve the uneven gap between the casing suction pipe and the enthalpy-increasing suction pipe in the prior art. Leakage is prone to occur during welding

Method used

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  • Opening reducing device and processing method for reducing opening of air suction pipe of compressor
  • Opening reducing device and processing method for reducing opening of air suction pipe of compressor
  • Opening reducing device and processing method for reducing opening of air suction pipe of compressor

Examples

Experimental program
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Effect test

no. 1 example

[0027] According to the necking device in the first embodiment of the present invention, an air gun is used as the fluid driving device.

[0028] The necking tool includes a shaft 1 and a column head 2 arranged at the first end of the shaft 1 . The column head 2 is provided with a blind hole 21 located at the end away from the shaft 1, and the blind hole 21 includes a necking section whose diameter gradually decreases from outside to inside. Wherein, the wide mouth end of the necking section is located on the end face of the column head 2, so that the end of the pipe to be necked can be stretched into the necking tooling.

[0029] The air gun includes a gun barrel, the second end of the handle 1 is located in the barrel, and the handle 1 can extend and retract relative to the barrel.

[0030] Further, the necking device also includes a limiting device, which is used to limit the starting position and / or the ending position of the movement of the handle 1 relative to the bushi...

no. 2 example

[0039] Such as image 3As shown, the necking device according to the second embodiment of the present invention also includes a necking tool and an air gun. The difference between the second embodiment and the first embodiment is that the gun barrel includes a pin hole, and the pin 31 penetrates through the pin hole and protrudes inward from the inner wall of the gun barrel. Others are the same as the first embodiment and will not be described here.

[0040] The present invention also provides a processing method for shrinking the suction pipe of the compressor, comprising:

[0041] Select the necking device so that the size of the blind hole of the necking device matches the suction pipe; align the necking section of the necking device with the nozzle of the suction pipe; start the fluid drive device to make the necking device The handle 1 of the fluid drive device moves in the direction of extension relative to the casing of the fluid drive device.

[0042] From the above...

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Abstract

The invention provides an opening reducing device and a processing method for reducing the opening of an air suction pipe of a compressor. The opening reducing device comprises an opening reducing tooling and a fluid driving device, wherein the opening reducing tooling comprises a rod handle and a post head, the post head is arranged at the first end of the rod handle and comprises a blind hole, the blind hole is formed in one end, far away from the rod handle, on the post head, the blind hole comprises an opening reducing section with the diameter gradually reduced from outside to inside, the large opening end of the opening reducing end is positioned at the end surface of the post head, or the diameter of the hole section from the end surface of the post head to the large opening end is not smaller than the diameter of the large opening end, the fluid driving device is used for driving the opening reducing tooling and comprises a sleeve, the second end of the rod handle is positioned in the sleeve pipe, and in addition, the rod handle is arranged in a way capable of extending out or contacting back relative to the sleeve. When the opening reducing device is used for reducing the opening of the air suction pipe of the compressor, the air suction pipe of a compressor casing is deformed under the effect of the opening reducing section, and the whole pipe opening approaches to an enthalpy adding air suction pipe, so the gap between the air suction pipe and the enthalpy adding air suction pipe is uniformly reduced, and the leakage between the air suction pipe and the enthalpy adding air suction pipe after the welding is effectively reduced.

Description

technical field [0001] The invention relates to the field of compressors, in particular to a necking device and a processing method for necking a suction pipe of a compressor. Background technique [0002] According to the existing technology, the angle tolerance of the shell hole of the compressor can only be guaranteed to be within plus or minus 1 degree, but the gap between the shell suction pipe and the enthalpy-increasing suction pipe is only about 0.18mm on one side. The diameter, when converted into the angle tolerance of the housing hole, can meet the clearance requirement within plus or minus 0.5 degrees, which cannot be achieved with the existing technology. Therefore, the gap between the housing suction pipe and the enthalpy-increasing suction pipe should be increased. Otherwise, the enthalpy-increasing suction pipe cannot be put into the shell suction pipe, but the gap is too large, and leakage is easy to occur after welding. At the same time, the shell componen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D41/04
Inventor 邹鹏吴志文
Owner ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
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