A kind of negative pressure graphite heat exchanger detection method

A technology of graphite heat exchanger and detection method, which is applied in the testing of machines/structural components, instruments, measuring devices, etc. It can solve the problems of difficult detection and replacement of heat exchange tube leaks, achieve rapid sealing and ensure tight sealing Sex, the effect of ensuring tightness

Active Publication Date: 2020-01-17
萝北奥星新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention overcomes the deficiencies of the above-mentioned prior art, and provides a negative-pressure graphite heat exchanger detection method to solve the problem of difficulty in detection and replacement of heat exchange tubes in existing shell-and-tube graphite heat exchangers. question

Method used

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  • A kind of negative pressure graphite heat exchanger detection method
  • A kind of negative pressure graphite heat exchanger detection method
  • A kind of negative pressure graphite heat exchanger detection method

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specific Embodiment approach 1

[0057] Embodiment 1: The present invention will be described in detail below in conjunction with the accompanying drawings:

[0058] combine figure 1 As shown, a leakage point detection device of a graphite heat exchanger disclosed in this embodiment includes a plugging device 1, a detection head 2, an industrial computer 3 and a plug, and the plugging device 1 is installed on the One side of the heat exchanger 4, the detection head 2 is inserted into the heat exchange tube on the other side of the heat exchanger 4, the detection head 2 is connected with the industrial computer 3; one end of the heat exchanger 4 is sealed by the sealing device 1 , the heat exchange tubes in the heat exchanger are sequentially sealed by the probe 2, and the vacuum pressure is maintained by the industrial computer 3, and then the damaged heat exchange tubes are detected;

[0059] combine figure 2 with image 3 As shown, the blocking device 1 includes a blocking disk 5, a fixed disk 6 and a l...

specific Embodiment approach 2

[0068] Specific implementation mode two, this implementation mode is based on the specific implementation mode one, specifically:

[0069] Specifically, the outer end of the fixed arm 64 is also provided with a limiting terminal 643, and the two ends of the limiting terminal 643 are provided with a card slot, and the card slot is connected with the fixed arm 64 through a bolt, and the axial slide groove 641 Sealing, moving pulley 75 comes off.

[0070] Specifically, the detection head 2 is provided with an anti-slip sleeve 25 to prevent the detection head 2 from slipping.

[0071] Specifically, a handwheel is provided at the end of the lead screw 71 to facilitate locking of the device.

specific Embodiment approach 3

[0072] Specific embodiment three, a negative pressure graphite heat exchanger detection method disclosed in this embodiment, the method is implemented on a leakage point detection device of a graphite heat exchanger described in specific embodiment one or two, including The following steps:

[0073] Step a: Open the flanges at both ends of the graphite heat exchanger, and rinse and dry the heat exchange tubes;

[0074]Step b: On one side of the graphite heat exchanger, adjust the plugging device, select a plugging disc of an appropriate size according to the model of the graphite heat exchanger, adjust the position of the moving pulley on the fixed arm and fix it with bolts. Fix the locking seat on the flange at the end of the graphite heat exchanger, rotate the hand wheel at the end of the screw, the screw rotates to drive the gear to rotate, the gear drives the rotating shaft to rotate, the rotating shaft pulls the locking rope tightly, and the locking rope Wrapped on the r...

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Abstract

The invention relates to the technical field of graphite heat exchangers, in particular to a negative pressure type graphite heat exchanger detection method. The leakage point detection device includes a sealing device, a detection head, an industrial control computer, and plugs; during leakage point detection, the sealing device is arranged on one side of the heat exchanger, the detection head isinserted into a heat exchanging pipe at the other side of the heat exchanger, the detection head is connected to the industrial control computer; vacuum pressure maintaining test can be performed onthe heat exchange pipes one by one so as to determine the state of the heat exchange pipe according to the condition of pressure rising, and a broken heat exchanging pipe can be quickly found; a firstsealing plug and a second sealing plug are arranged on two ends of the broken heat exchanging pipe; the first sealing plug and the second sealing plug are connected through a connection rope, and inthis way, the problem that the broken heat exchanging pipe is difficult to find during maintenance of the graphite heat exchanger can be solved; the manner of using the plugs to seal the two ends of the broken heat exchanging pipe can avoid huge cost due to change of a single heat exchanging pipe, and the objective that the maintenance cost is saved by sacrificing a part of the heat exchanging efficiency.

Description

technical field [0001] The invention relates to the technical field of graphite heat exchangers, in particular to a detection method for negative pressure graphite heat exchangers. Background technique [0002] Graphite heat exchanger is a heat exchanger made of graphite for heat transfer components. According to the structure, it can be divided into three types: block hole type, tube shell type and plate type. The type is divided into fixed type and floating head type according to the structure, and the fixed type is divided into immersion type, spray type and sleeve type. The sleeve type graphite heat exchanger adopts a closed cavity with several parallel heat exchange The layout of the tubes, in use, because the heat exchange tubes are made of graphite, the graphite itself is brittle, and the bending and tensile strength is low, resulting in the leakage of the heat exchange tubes due to the defects of the manufacturing itself or the use process, resulting in the loss of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M3/28G01M3/02
CPCG01M3/022G01M3/2815
Inventor 陈瑞陈庚韩玉凤韩军王路科赵以峰杨硕李秀川
Owner 萝北奥星新材料有限公司
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