Novel testing device and testing method for sealing performance of pipe plate and heat exchange pipe

A technology of sealing performance and testing equipment, which is applied in the direction of fluid tightness testing, measuring equipment, liquid tightness measurement using liquid/vacuum degree, etc., can solve the problems of non-reusable and cumbersome procedures, and achieve the goal of standardization, The test process is simple and the effect of reducing manufacturing costs

Inactive Publication Date: 2012-07-18
HARBIN BOILER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the pressure vessel is sealed by welding, it cannot be reused, and the procedures for subsequent related tests on the sample are relatively cumbersome. The process test can only be continued after cutting and separating the pressure vessel from the test cylinder and grinding the slits of the sample.
[0003]The existing equipment is sealed by welding, which cannot be reused, and the procedures for subsequent related tests on the sample are relatively cumbersome. Only the sealed pressure vessel and the test cylinder The process test can only be continued after cutting, separating and grinding the slit of the sample

Method used

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  • Novel testing device and testing method for sealing performance of pipe plate and heat exchange pipe
  • Novel testing device and testing method for sealing performance of pipe plate and heat exchange pipe

Examples

Experimental program
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Effect test

Embodiment 1

[0023] A new test device for the sealing performance of tube sheets and heat exchange tubes, which consists of: an end cover 5, a test cylinder 1, a sealing gasket and corresponding pipe joints; the tested tube sheet 3 and the test cylinder and the sealing The gasket forms a sealed cavity, and the tube seat A at the highest end is connected to the test cylinder during the test, and the test meter is installed on the tube seat A, and the tube seat B at the bottom end is connected to the test cylinder during the test, and the tube seat B is connected to the test medium inlet pipe, and is The sealing form of the test tube sheet adopts octagonal groove or boss plane for sealing.

Embodiment 2

[0025] In the new test device for sealing performance of tube sheets and heat exchange tubes described in Example 1, the tube sheets to be tested are connected to the test cylinder and the end caps using octagonal groove seals or convex-concave table seals.

[0026] That is, if the tube sheet to be tested is sealed with an octagonal groove, the end cover and the test cylinder are processed into corresponding octagonal grooves to connect with it; if a boss seal is used, the test cylinder is sealed The two ends are processed into a boss form, the end cover and the test cylinder are processed into a concave form, and a gasket matching the sample size is used for sealing, wherein the test cylinder and the end cover , The processing of the test cylinder is matched.

Embodiment 3

[0028] The new type tube sheet and heat exchange tube sealing performance test device described in embodiment 1 or 2, the test tube is sequentially equipped with expansion tubes 2, 3, etc. to form a heat exchange tube bundle, and one end of the test tube passes through The sealing ring is connected to the tested tube sheet, and the other end of the test cylinder has a cylinder end cover 14 . The test cylinder is connected with a pipe socket, the upper part of the pipe socket is connected with the test meter pipe joint 8 and the test medium port pipe joint 9, and the upper part of the pipe seat is connected with the discharge test medium pipe joint 10.

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Abstract

The invention discloses a novel testing device and testing method for the sealing performance of a pipe plate and a heat exchange pipe. The existing equipment adopts a welding mode for sealing and can not be used repeatedly, the procedure is complicated after subsequent related tests are carried out on a sample, and the process test can be continuously carried out only after cutting and separating a sealed pressure container and a test drum and grinding slots of the sample. The novel testing device comprises an end cover (5), the testing drum (1), a sealing pad and a corresponding pipe joint, wherein a sealing cavity is formed by the tested pipe plate (3), the testing drum and the sealing pad; in test, a highest-end pipe seat A is connected with the testing drum, and a bottommost-end pipe seat B is connected with the testing drum; and the sealing form of the tested pipe plate adopts an octagonal groove or a boss plane for sealing. The novel testing device and the testing method can be used for test on the sealing performance of the pipe plate and the heat exchange pipe, and pressure resistance test, and also can be used for leakage test.

Description

technical field [0001] The invention relates to a new type of test device, in particular to a new type of test device and test method for the sealing performance of tube sheets and heat exchange tubes. Background technique [0002] The heat exchanger product has a tube sheet and heat exchange tube structure. The tube sheet and heat exchange tube are connected by expansion joint, welding or a combination of the two. The tube sheet and heat exchange tube separate two media with different temperatures and pressures. To exchange heat, in order to make the connection between the tube sheet and the heat exchange tube reliable and ensure the safe operation of the heat exchanger product, the connection between the tube sheet and the heat exchange tube must meet certain sealing requirements. In order to test the sealing performance of the connection between the tube sheet and the heat exchange tube, a hydraulic test is required to detect the sealing performance of the expansion joint...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/00G01M3/22G01M3/28
Inventor 陈小平关庆鹤杜国珠李国骥曲郁婵刘太平
Owner HARBIN BOILER
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