Pressure testing tool for opening connecting tubes without flange seal

A flange-free, pressure-testing technology, applied in the direction of applying stable tension/pressure to test material strength, using liquid/vacuum degree to measure liquid tightness, measuring devices, etc., can solve the problem of heavy welding workload and damage slope mouth, time-consuming and labor-intensive problems

Active Publication Date: 2012-10-10
THE CHALLENGE PETROCHEM MACHINERY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the pressure test method of the above-mentioned welded blind plate will produce a heat-affected zone when the blind plate is welded at the end of the pipe. Therefore, it is necessary to reserve a certain length when purchasing the pipe. Cutting off the e...

Method used

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  • Pressure testing tool for opening connecting tubes without flange seal
  • Pressure testing tool for opening connecting tubes without flange seal
  • Pressure testing tool for opening connecting tubes without flange seal

Examples

Experimental program
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Effect test

Embodiment 1

[0044] One of the specific implementations of a pressure test tool for an open joint without flange seal of the present invention, such as figure 1 and figure 2 shown, including:

[0045] The pressure test ring 2 is sleeved on the outer wall of the pipe 1;

[0046] The sealing thin plate 5 is welded to the nozzle;

[0047] The flange cover 6 is tightly crimped on the sealing sheet 5 and connected to the pressure test ring 2 through the locking member 4;

[0048] Exhaust pipe 8, one end of which is pierced through the flange cover 6 and the sealing sheet 5, and communicates with the inner cavity of the pipe 1, and the other end is bent upward;

[0049] The water inlet pipe 7, one end of which is pierced through the flange cover 6 and the sealing sheet 5, communicates with the inner cavity of the pipe 1, and the other end is bent upward;

[0050] A plurality of fixed ribs 3 are arranged along the circumference of the outer wall of the pipe 1 for supporting the pressure test...

Embodiment 2

[0061] The second specific embodiment of the pressure test tooling for the open joint without flange seal of the present invention is as follows: image 3 and Figure 4 As shown, the main technical solutions of this embodiment are the same as those of Embodiment 1, and the features not explained in this embodiment are explained in Embodiment 1, and will not be repeated here. The difference between this embodiment and embodiment 1 is that the upper and lower parts of the pressure test ring 2 are provided with connecting plates 10 . Adding the connection plate 10 can be used for equipment that cannot use the pressure test ring 2 directly.

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Abstract

A pressure testing tool for opening connecting tubes without flange seal comprises a pressure testing ring, a sealing sheet, a blind flange, an exhaust pipe, a water inlet pipe and a plurality of fixing rib plates. The pressure testing ring is sleeved on the outer wall of a pipe, the sealing sheet is welded at a pipe orifice, the blind flange is in close compression joint with the sealing sheet and is connected with the pressure testing ring by locking parts, one end of the exhaust pipe is penetratingly arranged on the blind flange and the sealing sheet and is communicated with an inner cavity of the pipe, the other end of the exhaust pipe is bent upwards, one end of the water inlet pipe is penetratingly disposed on the blind flange and the sealing sheet and is communicated with the inner cavity of the pipe, the other end of the water inlet pipe is bent upwards, and the fixing rib plates are peripherally arranged along the outer wall of the pipe and used for supporting the pressure testing ring. Compared with the prior art, the pressure testing tool is low in welding load, cutting and grinding workload for the pipe orifice is low after pressure testing, a groove is not damaged, the length of the pipe is ensured to be unchanged, and the pressure testing tool is particularly applicable to pressure tests for equipment and pipelines with machined grooves and opening connecting pipes made of pure materials.

Description

technical field [0001] The invention relates to a pressure test tool in the field of petrochemical equipment, in particular to a pressure test tool for an open joint without flange seal. Background technique [0002] Pressure test is the most effective means to retest raw materials and test equipment manufacturing quality of petrochemical equipment, and it is also the most important method to test the pressure bearing capacity of equipment. Steel pipe is one of the most important components connecting high-pressure petrochemical equipment with other equipment. The pressure test of the steel pipe in high-pressure petrochemical equipment is to use tooling to seal the end of the steel pipe, inject water into the steel pipe, pressurize and maintain the pressure, and check whether the equipment has obvious deformation and leakage. [0003] So far, there are mainly three types of pressure test equipment for domestic high-pressure steel pipes, the first is the pipe end clamping ty...

Claims

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Application Information

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IPC IPC(8): G01N3/02G01N3/12G01M3/28
Inventor 林廖春陈孙艺胡文贵梁雄钟
Owner THE CHALLENGE PETROCHEM MACHINERY CORP
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