Gas expansion device and machining method and application of neckings of expansion pipe

A technology of a gas expansion device and a processing method, which is applied in the directions of earth-moving drilling, discharging machinery, etc., can solve the problems of flying heads, high defective rate, heavy weight, etc., and achieves reduced production cost, small bearing surface, and simple structure. Effect

Pending Publication Date: 2017-08-11
郭远军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing gas expansion device (cracking device) is hereinafter referred to as the expansion device, such as: CN201611099345.2, CN201520283079.3, CN201510489513.8, CN201510556527.7 The connection part usually adopts the thread method (the thread needs to be machined) or the welding method or the butt welding method For connection, no matter which of the above methods is used for manufacturing, there will be weak points in the connection between the inflation head, the energy release head and the expansion tube, which will cause the connection part to crack first when the expansion device expands, and the flying head will appear.
[0003] The existing expansion device (fracturing device) still has many components, and the technical problems of complex processing and assembly processes for each component
[0004] For example, the patent document with the notification number CN205858345U discloses "plug, expansion tube, activator, liquid filling hole and lock valve, the plug is provided with an activator installation port, and the plug or expansion tube is provided with a liquid filling hole." ", although it saves a lot of parts and assembly steps compared with other expansion devices, there are still two processings at both ends of the expansion tube, that is, one end needs to be welded during assembly, and the other end needs to be threaded

Method used

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  • Gas expansion device and machining method and application of neckings of expansion pipe
  • Gas expansion device and machining method and application of neckings of expansion pipe
  • Gas expansion device and machining method and application of neckings of expansion pipe

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0054] Example 1

[0055] An expansion device includes an expansion tube 1 and an inflatable ignition head 2. One end of the expansion tube 1 is contracted and sealed, and the other end is contracted with an inflatable ignition head 2. A storage space is formed between the contracted and sealed end 104 and the inflatable ignition head 2. Energy chamber 13; The gas-filled ignition head 2 includes a gas-filled seat body 201, a through hole 202, a valve cavity 203, an ignition chamber 204, a gas nozzle 4, a conductive valve 5, an insulating layer 6, an electric heating wire 8, a retaining ring 10, and a first Sealing ring 11, the middle of the upper end of the inflatable seat body 201 is provided with an inflator 4, a through hole 202 is provided under the inflator nozzle 4, a valve cavity 203 is provided under the through hole 202, and an ignition cavity 204 is provided under the valve cavity 203. 203 is provided with a conductive valve 5 and a first sealing ring 11, and the igniti...

Example Embodiment

[0058] Example 2

[0059] As the expansion device described in Example 1, in order to facilitate the connection of the heating wire 8, the conductive valve 5 has an inflatable conductive thimble 501 at one end, and a conductive needle 503 at the other end. When the conductive valve core 502 is in the middle, the conductive needle 503 is connected to the heating wire 8. One end, the other end of the heating wire 8 is connected to the inflatable seat body 201; the expansion tube is made of non-ferrous metal material or metal alloy or ABS or steel or copper alloy or aluminum alloy; the material strength of the conductive valve 5 is the same as the energy storage cavity 13 inside the bottle. The energy pressure is proportional; the material strength of the conductive valve 5 is slightly greater than the energy storage pressure in the energy storage chamber 13 bottle.

Example Embodiment

[0060] Example 3

[0061] As in the expansion device described in embodiment 1 or 2, the bottle mouth 101 is provided with a sealing groove 105, and the sealing groove 105 is provided with a second sealing ring 12; the inner wall of the ignition cavity 204 is provided with an internal thread 205 and a retaining ring 10 The outer wall is provided with an external thread 206 matching the internal thread 205; the thickness of the bottleneck 102 is 20mm, the thickness of the necked end 104 is 20mm, and the thickness of the bottle body 103 is 2mm; the bottleneck 102 and the neck of the expansion tube 1 The necked sealing end 104 is thickened through necking processing; the second sealing ring 12 adopts an O-ring.

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Abstract

The invention discloses a gas expansion device and a necking processing method and application of an expansion tube. The expansion device includes an expansion tube and an inflatable ignition head. The method is to fix the expansion tube through the clamp first, then rotate the expansion tube and heat the end of the expansion tube through the clamp, heat the end of the expansion tube until it is close to or reach plastic deformation, and after the front part of the shrinking mold touches the end of the expansion tube, The end of the expansion pipe moves from the front to the rear of the shrinking die, and the shrinking die extrudes and thickens the end of the expansion pipe, and the end of the shrinking end is thickened axially outward, and then the end of the expansion pipe is processed with a through-hole knife. Through-hole fixed aperture. The expansion tube is made into a pressure vessel by shrinking. The utility model has the advantages of simple structure, easy processing of structural components, low manufacturing cost, no flying head, no air leakage, safe transportation, no hidden danger of squib, and large expansion force.

Description

technical field [0001] The invention belongs to the technical field of expansion devices, and in particular relates to a gas expansion device and a necking processing method and application of an expansion tube. Background technique [0002] The existing gas expansion device (cracking device) is hereinafter referred to as the expansion device, such as: CN201611099345.2, CN201520283079.3, CN201510489513.8, CN201510556527.7 The connection part usually adopts the thread method (the thread needs to be machined) or the welding method or the butt welding method For connection, no matter which of the above-mentioned methods is used for manufacturing, there will be weak points in the connection between the inflation head, the energy release head and the expansion tube, which will cause the connection part to crack first when the expansion device expands, resulting in flying heads. [0003] The existing expansion device (fracturing device) still has technical problems of many compone...

Claims

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Application Information

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IPC IPC(8): E21C37/14
CPCE21C37/14
Inventor 郭远军
Owner 郭远军
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