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Connecting tube, hard tube connector structure as well as device and method for machining connecting tube

A technology of joint structure and hard pipe, which is applied in the direction of pipe/pipe joint/fitting, manufacturing tool, sleeve/socket connection, etc., can solve the problem that it is difficult to apply hydraulic system, etc., and achieve high pressure level and reliable sealing effect

Active Publication Date: 2014-12-24
GUANGDONG HUAYE POWER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limitations of materials and sealing structures, these kinds of pipe joints are generally only suitable for hydraulic systems below 40MPa, and it is difficult to apply to hydraulic systems greater than 40MPa.

Method used

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  • Connecting tube, hard tube connector structure as well as device and method for machining connecting tube
  • Connecting tube, hard tube connector structure as well as device and method for machining connecting tube
  • Connecting tube, hard tube connector structure as well as device and method for machining connecting tube

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Please refer to figure 1 , the first embodiment provides a hard pipe joint structure, which includes a connecting pipe 11 , a joint body 12 and a connecting piece 13 .

[0036] The connecting pipe 11 has a through hole, which can be optionally annealed and treated with a low carbon steel seamless pipe. The connecting pipe 11 includes a pipe body 111 and a spherical head body 112 coupled with the pipe body 111 . The diameter of the bottom wall 113 of the head body 112 is larger than the diameter of the pipe body 111 , so that the head body 112 protrudes laterally from the outer wall of the pipe body 111 to form a root angle. The root angle can be any angle, and here are three examples, such as 90°, 115° or 135°, among which 115° and 135° are more conducive to stress, and avoid the problem of root cracks after multiple uses of the head body 112 .

[0037] The joint body 112 has a flow hole, and the flow hole is divided into a first hole section 121 , a second hole secti...

Embodiment 2

[0057] Please refer to figure 2 , the second embodiment provides a pipe connection processing device, which includes a base 21, an end cover plate 22, a pipe mold assembly 23, a ball mold assembly 24, a locking member 25 and a force member 26, which can be used to manufacture A nozzle shown and other nozzles having a spherical head.

[0058] Specifically, please refer to image 3 , the base 21 is used to make the whole device, which can be fixed on any stable position (such as a simple workbench), and the end cover plate 22 is then fixed on the base 21 .

[0059] In this embodiment, the pipe mold assembly 23 has a pipe mold body 231 , a first pipe mold 232 and a second pipe mold 233 . The nozzle mold body 231 is fixed on the base 21 and one end is against the end cover plate 22 , or it can be further locked on the end cover plate 22 by locking screws.

[0060] In addition, in addition to using the end cover plate 22 to limit the position of the pipe mold body 231, a limiti...

Embodiment 3

[0077] The third embodiment provides a processing method for the connecting pipe, which is to use a cold rolling forming process to roll the head body of the connecting pipe into a spherical shape.

[0078] The device shown in Embodiment 2 is a device designed according to the method shown in Embodiment 3. Of course, the device shown in Embodiment 2 is only an example of this method, and this method can also be realized by other devices in actual operation. method.

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Abstract

The invention discloses a hard tube connector structure for a hydraulic system, a connecting tube as well as a device and a method for machining the connecting tube. The connecting tube and the hard tube connector structure can be applied to a system with the pressure grade reaching up to 1100MPa and flow rate, and are reliable in sealing and very high in pressure grade; the sealing effect is not influenced after the connecting tube and the hard tube connector structure are repeatedly used for a plurality of times. The device and the method can be used for conveniently manufacturing the connecting tube, and are simple in operation, thus being suitable for field operation.

Description

technical field [0001] The present application relates to a hard pipe joint structure for a hydraulic system, a connecting pipe, and a device and method for processing the connecting pipe. Background technique [0002] The hydraulic pipe joint is a necessary connection in the hydraulic system pipeline connection. There is a big difference between the hydraulic pipe joint and the ordinary pipe joint. The biggest and most significant difference is that the pressure in the hydraulic pipe is much higher than that in the ordinary pipe joint. The former is often dozens or even hundreds of times that of the latter, and the impact force of the sudden burst of hydraulic oil pipes is also very large, so the requirements for hydraulic pipe joints are very high. [0003] The hydraulic pipe joint is a detachable connection between the oil pipe and the oil pipe, the oil pipe and the hydraulic component. It is generally divided into a hose joint and a hard pipe joint structure. The hard pi...

Claims

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Application Information

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IPC IPC(8): F16L21/08B23P23/04
CPCF16L21/08
Inventor 孙玉岗周路陈其永葛台代陈铭斌李敏
Owner GUANGDONG HUAYE POWER TECH
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