Repairing method for heat exchange tube of graphite heat exchanger

A technology of graphite heat exchanger and heat exchange tube, which can be used in the direction of measuring the acceleration and deceleration rate of fluid, using liquid/vacuum degree for liquid tightness measurement, etc., which can solve the problems of leakage detection and replacement of heat exchange tubes, etc. , to achieve the effect of fast sealing, ensuring sealing tightness, and ensuring tightness

Inactive Publication Date: 2018-08-10
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 method for repairing heat exchange tubes of graphite heat exchangers, so as to solve the difficulty in detection and replacement of heat exchange tubes of existing shell-and-tube graphite heat exchangers. The problem

Method used

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  • Repairing method for heat exchange tube of graphite heat exchanger
  • Repairing method for heat exchange tube of graphite heat exchanger
  • Repairing method for heat exchange tube of graphite heat exchanger

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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 and image 3 As shown, the blocking device 1 includes a blocking disk 5, a fixed disk 6 and a lo...

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, the end of the lead screw 71 is provided with a handwheel, which is convenient for locking 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 a repairing method for heat exchange tube of a graphite heat exchanger, and belongs to the technical field of graphite heat exchangers. A plugging device, a detection head, anindustrial control computer and plugs are included, during leakage point detection, the plugging device is installed at one side of the heat exchanger, the detection head is inserted into the heat exchange tube at the other side of the heat exchanger, and the detection head is connected with the industrial control computer; vacuum pressure-maintaining test can be carried out on the heat exchangetubes one by one, states of the heat exchange tubes are determined according to pressure increase conditions, a damaged heat exchange tube can be discovered timely, and the first and second plugs arearranged at the two ends of the damaged heat exchange tube, and are connected with each other via a connection rope. The problem that the damaged heat exchange tube is hard to find in the maintenanceprocess of the graphite heat exchanger is solved, the two ends are plugged by the plugs, high cost of replacing the single heat exchange tube can be avoided, and the maintenance cost can be reduced bysacrificing part of the heat exchange efficiency.

Description

technical field [0001] The invention relates to the technical field of graphite heat exchangers, in particular to a method for repairing heat exchange tubes of 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...

Claims

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Application Information

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IPC IPC(8): G01M3/26
Inventor 陈瑞陈庚韩玉凤韩军孙太生韩国军张云剑郎玉海
Owner 萝北奥星新材料有限公司
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