CN116222918A - Leakage detection method and leakage detection system for tube bundle cooler - Google Patents
Leakage detection method and leakage detection system for tube bundle cooler Download PDFInfo
- Publication number
- CN116222918A CN116222918A CN202310319322.1A CN202310319322A CN116222918A CN 116222918 A CN116222918 A CN 116222918A CN 202310319322 A CN202310319322 A CN 202310319322A CN 116222918 A CN116222918 A CN 116222918A
- Authority
- CN
- China
- Prior art keywords
- tube bundle
- plug
- air inlet
- detected
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2807—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes
- G01M3/2815—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes using pressure measurements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The disclosure relates to a leak detection method and a leak detection system of a tube bundle cooler, wherein the leak detection method comprises the following steps: respectively installing a sealing plug and an air inlet plug at two ends of a detected tube bundle; introducing a detection medium with a first pressure into the detected tube bundle through an air inlet plug; when the preset time length is over and the difference value between the pressure in the detected tube bundle and the first pressure is not in the preset pressure range, detecting the joint of the sealing plug and the detected tube bundle and the joint of the air inlet plug and the detected tube bundle respectively through a detector; and determining whether the detected tube bundle leaks or not according to the detection result of the detector. According to the leak detection method, the joint of the sealing plug and the detected tube bundle and the joint of the air inlet plug and the detected tube bundle are detected through the detector, so that the condition of detection result distortion caused by the fact that the air inlet plug and/or the sealing plug are not tightly sealed with the detected tube bundle is avoided, and the leak detection result can be more accurate.
Description
Technical Field
The disclosure relates to the technical field of cooler leakage detection, in particular to a leakage detection method and a leakage detection system of a tube bundle cooler.
Background
The generator set exciter generates a large amount of heat, the cooler of the exciter is required to be used for cooling, the excited cooler generally adopts a tube bundle cooler, one exciter generally needs a plurality of tube bundle coolers, the air inlet temperature of the exciter needs to be ensured to be not higher than 45 ℃, the cooler is required to be stable in performance and can be used for a long time, however, the tube bundle of the tube bundle cooler can be scaled, corroded or leaked due to vibration, abrasion, pressure exceeding standard, poor water quality and other reasons in the operation process of the cooler, the tube bundle cooler of the exciter can influence the exciter after being leaked, therefore, the tube bundle cooler needs to be subjected to leakage detection, the tube bundle cooler is composed of a plurality of tube bundles, the leakage detection is required to be carried out on a single tube bundle one by one, and the problem of inaccurate detection easily occurs in the leakage detection process.
Disclosure of Invention
The purpose of the disclosure is to provide a leakage detection method and a leakage detection system of a tube bundle type cold zone device, and the leakage detection method is used for detecting a tube bundle of the tube bundle type cooler, so that a detection result is more accurate, and the condition of false detection is avoided.
To achieve the above object, a first aspect of the present disclosure provides a leak detection method for a tube bundle cooler, including:
respectively installing a sealing plug and an air inlet plug at two ends of a detected tube bundle;
introducing a detection medium with first pressure into the detected tube bundle through the air inlet plug;
determining whether the difference value between the pressure in the detected tube bundle and the first pressure is in a preset pressure range or not through preset time length;
when the difference value between the pressure in the detected tube bundle and the first pressure is not in a preset pressure range, detecting the joint of the sealing plug and the detected tube bundle and the joint of the air inlet plug and the detected tube bundle respectively through a detector;
and determining whether the detected tube bundle leaks or not according to the detection result of the detector.
Optionally, the first pressure is 0.3MPa to 0.7MPa;
and/or the preset duration is 4 s-6 s.
Optionally, the preset pressure ranges from 0MPa to 0.1MPa.
Optionally, the step of introducing a detection medium with a preset pressure into the detected tube bundle through the air inlet plug specifically includes:
the air inlet channel of the air inlet plug is communicated with a storage device which stores detection media;
opening a stop valve arranged at an air outlet of the storage device, and introducing the detection medium into the detected tube bundle;
when the pressure in the tube bundle to be tested rises to the first pressure, the shut-off valve is closed.
Optionally, the detection medium is halogen gas, and the detector is a halogen detector.
Optionally, the step of installing the sealing plug and the air inlet plug at two ends of the detected tube bundle respectively specifically includes:
installing the sealing plug at one end of the detected tube bundle by using a plug quick-mounting tool;
and installing the air inlet plug on the other end, deviating from the sealing plug, of the detected tube bundle by using the plug quick-mounting tool.
Optionally, the method comprises: the device comprises a handheld part, a mounting part and a connecting part, wherein two ends of the connecting part are respectively and fixedly connected with the handheld part and the mounting part, one end, far away from the connecting part, of the mounting part is provided with a support opening for being clamped at an end cover screw, the mounting part is provided with a clamping groove, and the clamping groove is positioned between the support opening and the connecting part and is used for being pressed and connected with the air inlet plug or the sealing plug;
the step of using the quick-mounting tool to mount the sealing plug at one end of the tube bundle to be inspected comprises:
the branch port of the plug quick-assembly tool is clamped on an end cover screw at the edge of the tube bundle cooler;
pressing the clamping groove of the quick-mounting tool on the sealing plug;
press-fitting the sealing plug to one end of the tube bundle to be inspected;
the step of using the quick assembly tool to mount the air inlet plug at the other end of the detected tube bundle, which is away from the sealing plug, comprises the following steps:
clamping the branch port of the plug quick-assembly tool on the end cover screw at the edge of the tube bundle cooler;
pressing the clamping groove of the quick-mounting tool on the air inlet plug;
and the air inlet plug is pressed and assembled to the other end, which is opposite to the sealing plug, of the detected tube bundle.
Optionally, the clamping groove is configured as a strip-shaped groove extending along the extending direction of the mounting part.
Optionally, the method further comprises:
and (5) detaching the end covers at the two ends of the tube bundle cooler.
The second aspect of the present disclosure also provides a leak detection system for a tube bundle cooler, comprising:
the sealing plug is used for being connected with one end of the detected tube bundle in a sealing mode, the air inlet plug is used for being connected with the other end of the detected tube bundle in a sealing mode, and the air inlet plug is provided with an air inlet channel;
the storage device is communicated with the air inlet channel through a pipeline, the storage device is used for storing detection media, a stop valve is arranged at an air outlet of the storage device, the pipeline is communicated with a pressure gauge, and the communication position of the pressure gauge and the pipeline is positioned between the stop valve and the air inlet plug;
the detector is used for detecting whether the joint of the air inlet plug and the detected tube bundle and the joint of the sealing plug and the detected tube bundle leak detection media or not;
the plug quick-mounting tool is arranged on the end face of the tube bundle cooler and used for mounting the air inlet plug and the sealing plug.
Through the technical scheme, the leak detection method of the tube bundle cold zone device comprises the following steps: respectively installing a sealing plug and an air inlet plug at two ends of a detected tube bundle; introducing a detection medium with a first pressure into the detected tube bundle through an air inlet plug; when the preset time length is over and the difference value between the pressure in the detected tube bundle and the first pressure is not in the preset pressure range, detecting the joint of the sealing plug and the detected tube bundle and the joint of the air inlet plug and the detected tube bundle respectively through a detector; and determining whether the detected tube bundle leaks or not according to the detection result of the detector. According to the leak detection method, when the difference value between the pressure in the detected tube bundle and the first pressure is not in a preset pressure range, the joint of the sealing plug and the detected tube bundle and the joint of the air inlet plug and the detected tube bundle are detected through the detector, so that the condition of detection result distortion caused by the fact that the air inlet plug and/or the sealing plug are not tightly sealed with the detected tube bundle is avoided, and the leak detection result can be more accurate.
Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification, illustrate the disclosure and together with the description serve to explain, but do not limit the disclosure. In the drawings:
FIG. 1 is a flow block diagram of a method of leak detection for a tube bundle cooler provided in an exemplary embodiment of the present disclosure;
fig. 2 is a schematic diagram of a portion of a leak detection system provided in an exemplary embodiment of the disclosure in communication with a tube bundle under test;
FIG. 3 is a schematic illustration of an installation of an air inlet plug to a tube bundle to be inspected of a tube bundle cooler using a quick-fit tool provided in an exemplary embodiment of the present disclosure;
fig. 4 is a block diagram of a quick-fit tool provided in an exemplary embodiment of the present disclosure.
Description of the reference numerals
10-a storage device; 20-a stop valve; 30-a pressure gauge; 40-piping; 50-quick release joint; 60-an air inlet plug; 61-a second cover part; 62-a second seal; 70-a second gasket; 80-a tube bundle to be tested; 90-sealing plugs; 91-a first seal; 92-a first cover part; 100-a first gasket; 200-plug quick-mounting tools; 201-a hand-held part; 202-a connection; 203-a mounting portion; 2031-a clamping groove; 2032-opening; 300-end cap screw.
Detailed Description
Specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the disclosure, are not intended to limit the disclosure.
In the present disclosure, unless otherwise stated, "inner and outer" refer to inner and outer of the outline of a component or structure itself, and "first, second" and the like are used to distinguish one element from another, and are not sequential or important. In addition, in the description with reference to the drawings, the same reference numerals in different drawings denote the same elements.
The generator set exciter generates a large amount of heat and requires cooling using the exciter's cooler. The cooler of the exciter generally adopts a tube bundle cooler, one exciter generally needs a plurality of tube bundle coolers, the air inlet temperature of the exciter needs to be ensured to be not higher than 45 ℃, the cooler needs to be stable in performance and can be used for a long time, however, the tube bundle cooler can be possibly scaled, corroded or leaked due to vibration, abrasion, pressure exceeding standard, poor water quality and other reasons in the operation process of the cooler, the tube bundle cooler of the exciter can be influenced after leakage, so that the tube bundle cooler needs to be subjected to leakage detection, the tube bundle cooler subjected to leakage detection can be closed during leakage detection, other tube bundle coolers need to be normally operated to ensure the normal operation of the exciter, the tube bundle cooler is composed of a plurality of tube bundles, leakage detection needs to be carried out on a single tube bundle one by one during leakage detection, a method of airtight leakage detection is generally used, two ends of the tube bundle are blocked by using blocking pieces, a detection medium such as gas, and a pressure detection medium such as a gas is filled into the tube bundle in the leakage detection, and then the pressure meter is observed to determine whether the tube bundle is subjected to leakage detection. However, during leak detection, workers find that because of the potential for poor sealing between the plug and the tube bundle being leak-detected, this can lead to inaccurate detection problems, and that workers cannot determine very accurately whether the tube bundle being leak-detected is leaking or because of the poor sealing between the plug and the tube bundle being leak-detected.
In order to determine whether there is a problem of poor sealing between the plugging member and the tube bundle being leak-detected, and to improve the accuracy of the detection, as shown in fig. 1, a first aspect of the present disclosure provides a leak detection method for a tube bundle cooler, including:
s110, respectively installing a sealing plug and an air inlet plug at two ends of a detected tube bundle;
s120, introducing a detection medium with a first pressure into the detected tube bundle through an air inlet plug;
s130, determining whether the difference value between the pressure in the detected tube bundle and the first pressure is in a preset pressure range or not through a preset time period;
s140, when the difference value between the pressure in the detected tube bundle and the first pressure is not in a preset pressure range, detecting the joints of the sealing plug and the detected tube bundle and the joints of the air inlet plug and the detected tube bundle respectively through a detector;
s150, determining whether the detected tube bundle leaks according to the detection result of the detector.
The leak detection method of the tube bundle type cold zone device comprises the following steps: the sealing plugs 90 and the air inlet plugs 60 are respectively arranged at two ends of the detected tube bundle 80; a detection medium with first pressure is introduced into the detected tube bundle through an air inlet plug 60; when the preset time period is over and the difference between the pressure in the detected tube bundle 80 and the first pressure is not in the preset pressure range, detecting the joints of the sealing plug 90 and the detected tube bundle 80 and the joints of the air inlet plug 60 and the detected tube bundle 80 respectively through a detector; based on the detection result of the detector, it is determined whether the tube bundle 80 to be detected leaks. According to the leak detection method, when the difference value between the pressure in the detected tube bundle 80 and the first pressure is not in a preset pressure range, the joint of the sealing plug 90 and the detected tube bundle 80 and the joint of the air inlet plug 60 and the detected tube bundle 80 are detected through the detector, so that the condition of detection result distortion caused by the fact that the air inlet plug 60 and/or the sealing plug 90 are not tightly sealed with the detected tube bundle 80 is avoided, and the leak detection result can be more accurate.
In some embodiments, in step S110, the sealing plugs 90 and the air inlet plugs 60 are respectively installed at two ends of the tube bundle 80 to be tested, so that the two ends of the tube bundle 80 to be tested can be sealed, so as to provide a working environment for the next step of introducing working medium into the tube bundle 80 to be tested.
The sealing plug 90 and the air inlet plug 60 may be installed at two ends of the tube bundle 80 in any manner according to the need, for example, the auxiliary installation may be performed by using a quick-mounting tool, and in some embodiments, the specific operations of installing the sealing plug 90 and the air inlet plug 60 at two ends of the tube bundle 80 in step S110 may be: the seal plug 90 is installed at one end of the tube bundle 80 to be inspected using a plug quick-install tool 200. The air inlet plug 60 is mounted on the tube bundle 80 at the other end facing away from the seal plug 90 using a plug quick tool 200.
For ease of installation and labor savings, in some embodiments, the quick-fit tool may be defined as shown in fig. 3 and 4, e.g., comprising: the handheld portion 201, the mounting portion 203 and the connecting portion 202, two ends of the connecting portion 202 are fixedly connected to the handheld portion 201 and the mounting portion 203 respectively, a branch port 2032 for being clamped at the end cover screw 300 is formed at one end, far away from the connecting portion 202, of the mounting portion 203, a clamping groove 2031 is formed at the mounting portion 203, and the clamping groove 2031 is located between the branch port 2032 and the connecting portion 202 and used for being pressed and connected to the air inlet plug 60 or the sealing plug 90.
Based on the plug-in-place tool 200 defined in the above embodiment, the specific operation of installing the seal plug 90 at one end of the tube bundle 80 to be inspected using the plug-in-place tool 200 is as follows: the branch port 2032 of the plug quick assembly tool 200 is clamped with the end cover screw 300 at the edge of the tube bundle cooler. The snap-fit tool clamping groove 2031 is pressed against the seal plug 90. The sealing plug 90 is press-fitted to one end of the tube bundle 80 to be inspected.
The specific operation of installing the air inlet plug 60 on the tube bundle 80 to be tested at the other end facing away from the sealing plug 90 using the plug quick tool 200 is: the branch port 2032 of the plug quick assembly tool 200 is clamped with the end cover screw 300 at the edge of the tube bundle cooler. The clamping groove 2031 of the quick-mounting tool is pressed against the air inlet plug 60. The air inlet plug 60 is press-fitted to the other end of the tube bundle 80 to be inspected. The plug quick-assembly tool 200 can be used as an auxiliary installation tool to further facilitate installation of the air inlet plug 60 and/or the sealing plug 90.
In the above embodiment, the end cap screw 300 is a screw for fixing an end cap of the tube bundle cooler, the end cap screw 300 can be installed in a screw hole of the tube bundle cooler without an end cap, the screw hole can be selected arbitrarily according to the requirement, the end cap screw 300 is used as a limiting piece by the end cap fast-assembling tool 200, the branch port 2032 of the end cap fast-assembling tool 200 is clamped at the edge of the tube bundle cooler to be used as a fulcrum of the end cap fast-assembling tool 200, the clamping groove 2031 is clamped on the air inlet end cap 60 or the sealing end cap 90, then a force is applied to the handheld portion 201, and the air inlet end cap 60 or the sealing end cap 90 is pressed at one end of the detected tube bundle 80 by utilizing the lever principle, so that the operation is more labor-saving.
In some embodiments, the clamping groove 2031 is configured as a strip-shaped groove extending along the extending direction of the mounting portion 203, the branch port 2032 is clamped on the end cover screw 300, and the strip-shaped groove can mount the sealing plug 90 or the air inlet plug 60 on the tube bundles with different distances from the end cover screw 300, so that the tube bundles with different positions can be more conveniently mounted with the sealing plug 90 or the air inlet plug 60.
In some embodiments, after the air inlet plug 60 and the sealing plug 90 are respectively installed at the two ends of the tube bundle 80 to be tested, step S120 is required to be performed, and the test medium of the first pressure is introduced into the tube bundle 80 to be tested through the air inlet plug 60. The specific operation comprises the following steps:
the intake passage of the intake plug 60 is communicated with the storage device 10 storing the detection medium.
The shut-off valve 20 provided in the air inlet of the storage device 10 is opened, and the test medium is introduced into the tube bundle 80 to be tested.
When the pressure in the tube bundle 80 to be tested rises to the first pressure, the shut-off valve 20 is closed.
In some embodiments, the first pressure may range from 0.3MPa to 0.7MPa, depending on the actual operating experience, and may be within this range to provide a suitable pressure environment for the tube bundle 80 being tested. For example, the first pressure may be 0.5MPa, and when the pressure in the tube bundle 80 is increased to the first pressure of 0.5MPa, the stop valve 20 may be closed to stop the filling of the tube bundle 80 with the test medium, so that the pressure in the tube bundle 80 does not continue to increase.
In some embodiments, the test medium may be a gas to prevent leakage of the test medium from contaminating the tube bundle cooler, and a pressure gauge 30 may be provided between the shut-off valve 20 and the inlet plug 60 for detecting the pressure within the tube bundle 80 being tested.
The air inlet channel of the air inlet plug 60 is communicated with the storage device 10 storing the detection medium, the air inlet channel of the air inlet plug 60 can be communicated with the storage device 10 storing the detection medium through the pipeline 40, and the quick-release connector 50 can be arranged at the communication position of the air inlet channel and the pipeline 40, so that the pipeline 40 can be conveniently installed and detached.
In step S120, after the first pressure of the detection medium is introduced into the tube bundle 80 through the air inlet plug 60, step S130 is required to be performed, and after a preset period of time, it is determined whether the difference between the pressure in the tube bundle 80 and the first pressure is within a preset pressure range.
After step S130, step S140 is required, and in step S140, when the difference between the pressure in the detected tube bundle 80 and the first pressure is not satisfied with the preset pressure range, the joints between the sealing plug 90 and the detected tube bundle 80 and between the air inlet plug 60 and the detected tube bundle 80 are detected by the detector, so as to determine whether the sealing plug 90 and/or the sealing between the air inlet plug 60 and the detected tube bundle 80 leak according to the detection result.
In some embodiments, the preset duration may have a value ranging from 4s to 6s, for example, the preset duration may have a value ranging from 5s, and the preset pressure range may have a value ranging from 0MPa to 0.1MPa, according to actual working experience.
In some embodiments, step 140 may be: after 5s, when the difference between the pressure in the tube bundle 80 to be detected and the first pressure of 0.5MPa is not smaller than 0MPa to 0.1MPa, the joints of the sealing plug 90 and the tube bundle 80 to be detected and the joints of the air inlet plug 60 and the tube bundle 80 to be detected are detected respectively through a detector.
Wherein the detection medium may be a gas that is easily detected, for example, the detection medium may be a halogen gas, and the detector may be a halogen gas detector.
In some embodiments, step S150 is performed after step S140, where step S150 is to determine whether the tube bundle 80 is leaking according to the detection result of the detector. If the detector does not detect the detection medium, determining that the detected tube bundle 80 leaks; if the detector detects the detection medium, the explanation may be caused by leakage at the joint of the sealing plug 90 and the tube bundle 80 to be detected, or caused by leakage at the joint of the sealing plug 90 and the tube bundle 80 to be detected. The test medium in the tube bundle 80 needs to be released, and then steps S110 to S150 are performed again to eliminate inaccurate test results caused by the sealing plug 90 and/or the air inlet plug 60 not being tightly sealed with the tube bundle 80.
In some embodiments, after step S120, when the viewing pressure gauge 30 shows that the difference between the pressure within the tube bundle 80 to be tested and the first pressure is within the preset range, then it is determined that the tube bundle 80 to be tested does not leak.
In some embodiments, leak detection may be performed sequentially on the tube bundles of the tube-bundle cooler, and the tube bundles for which leaks are determined may be plugged.
In some embodiments, for a tube bundle cooler used on-line, prior to performing step S110, the leak detection method further comprises: the end caps at both ends of the tube bundle cooler need to be removed to facilitate leak detection of the tube bundle cooler.
The second aspect of the present disclosure discloses a leak detection system of a tube bundle cooler, which can be applied to the leak detection method for detecting leak of the tube bundle cooler. As shown in fig. 2 and 3, the leak detection system includes: the plugging piece comprises a sealing plug 90 and an air inlet plug 60, wherein the sealing plug 90 is used for being connected with one end of the detected tube bundle 80 in a sealing way, the air inlet plug 60 is used for being connected with the other end of the detected tube bundle 80 in a sealing way, and the air inlet plug 60 is provided with an air inlet channel; the storage device 10 is communicated with the air inlet channel through a pipeline 40, the storage device 10 is used for storing detection media, a stop valve 20 is arranged at an air outlet of the storage device 10, the pipeline 40 is communicated with a pressure gauge 30, and the communication part of the pressure gauge 30 and the pipeline 40 is positioned between the stop valve 20 and the air inlet plug 60; the detector is used for detecting whether the joint of the air inlet plug 60 and the detected tube bundle 80 and the joint of the sealing plug 90 and the detected tube bundle 80 leak detection media or not; the plug quick-assembly tool 200, the plug quick-assembly tool 200 is arranged on the end face of the tube bundle cooler for mounting the air inlet plug 60 and the sealing plug 90.
In the above embodiment, the pressure gauge 30 is used to detect the pressure in the tube bundle.
In some embodiments, as shown in fig. 2, the sealing plug 90 includes a first cover portion 92 and a first sealing portion 91, where the first sealing portion 91 is used to be inserted into the tube bundle 80 to be tested, and a first gasket 100 is disposed around an outer wall of the first sealing portion 91, so as to be used for sealing between the first sealing portion 91 and an inner wall of the tube bundle 80 to be tested; the air inlet plug 60 comprises a second sealing cover part 61 and a second sealing part 62, the second sealing part 62 is inserted into the detected tube bundle 80, an air inlet channel penetrates through the second sealing cover part 61 and the second sealing part 62, and a second sealing gasket 70 is arranged on the outer wall of the second sealing part 62 in a surrounding manner so as to be used for sealing between the second sealing part 62 and the inner wall of the detected tube bundle 80.
In some embodiments, as shown in fig. 2 and 3, the quick-mounting tool includes a hand-holding portion 201, an installation portion 203, and a connection portion 202, two ends of the connection portion 202 are fixedly connected to the hand-holding portion 201 and the installation portion 203, one end of the installation portion 203 away from the connection portion 202 is formed with a support port 2032 for being clamped to a limiting member, the installation portion 203 is formed with a clamping groove 2031, and the clamping groove 2031 is located between the support port 2032 and the connection portion 202 for being in pressure connection with the first cover portion 92 or the second cover portion 61.
In some embodiments, the sealing plug 90 and the air inlet plug 60 may be made of stainless steel, which has the characteristics of good processing performance, high toughness and corrosion resistance, and can meet the requirement of mechanical strength.
The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure, and all the simple modifications belong to the protection scope of the present disclosure.
In addition, the specific features described in the foregoing embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, the present disclosure does not further describe various possible combinations.
Moreover, any combination between the various embodiments of the present disclosure is possible as long as it does not depart from the spirit of the present disclosure, which should also be construed as the disclosure of the present disclosure.
Claims (10)
1. A method of leak detection for a tube bundle cooler, the method comprising:
respectively installing a sealing plug and an air inlet plug at two ends of a detected tube bundle;
introducing a detection medium with first pressure into the detected tube bundle through the air inlet plug;
determining whether the difference value between the pressure in the detected tube bundle and the first pressure is in a preset pressure range or not through preset time length;
when the difference value between the pressure in the detected tube bundle and the first pressure is not in a preset pressure range, detecting the joint of the sealing plug and the detected tube bundle and the joint of the air inlet plug and the detected tube bundle respectively through a detector;
and determining whether the detected tube bundle leaks or not according to the detection result of the detector.
2. The leak detection method as defined in claim 1, wherein,
the value range of the first pressure is 0.3MPa to 0.7MPa;
and/or the value range of the preset duration is 4 s-6 s.
3. The leak detection method as defined in claim 1, wherein the predetermined pressure range is 0MPa to 0.1MPa.
4. The leak detection method as defined in claim 1, wherein the step of introducing a detection medium of a predetermined pressure into the tube bundle to be detected through the air inlet plug comprises:
the air inlet channel of the air inlet plug is communicated with a storage device which stores detection media;
opening a stop valve arranged at an air outlet of the storage device, and introducing the detection medium into the detected tube bundle;
when the pressure in the tube bundle to be tested rises to the first pressure, the shut-off valve is closed.
5. The method of leak detection as defined in claim 1, wherein the detection medium is a halogen gas and the detector is a halogen detector.
6. The leak detection method as defined in claim 1, wherein the step of installing the sealing plug and the air inlet plug at both ends of the tube bundle to be detected, respectively, comprises:
installing the sealing plug at one end of the detected tube bundle by using a plug quick-mounting tool;
and installing the air inlet plug on the other end, deviating from the sealing plug, of the detected tube bundle by using the plug quick-mounting tool.
7. The leak detection method as defined in claim 6, wherein the plug quick-install tool comprises: the device comprises a handheld part, a mounting part and a connecting part, wherein two ends of the connecting part are respectively and fixedly connected with the handheld part and the mounting part, one end, far away from the connecting part, of the mounting part is provided with a support opening for being clamped at an end cover screw, the mounting part is provided with a clamping groove, and the clamping groove is positioned between the support opening and the connecting part and is used for being pressed and connected with the air inlet plug or the sealing plug;
the step of using the quick-mounting tool to mount the sealing plug at one end of the tube bundle to be inspected comprises:
the branch port of the plug quick-assembly tool is clamped on an end cover screw at the edge of the tube bundle cooler;
pressing the clamping groove of the quick-mounting tool on the sealing plug;
press-fitting the sealing plug to one end of the tube bundle to be inspected;
the step of using the quick assembly tool to mount the air inlet plug at the other end of the detected tube bundle, which is away from the sealing plug, comprises the following steps:
clamping the branch port of the plug quick-assembly tool on the end cover screw at the edge of the tube bundle cooler;
the clamping groove of the quick-mounting tool is pressed on the air inlet plug;
and the air inlet plug is pressed and assembled to the other end, which is opposite to the sealing plug, of the detected tube bundle.
8. The leak detection method as defined in claim 7, wherein the clip groove is configured as a strip groove extending in a direction along which the mounting portion extends.
9. The method of leak detection as defined in claim 1, wherein the method of leak detection further comprises:
and (5) detaching the end covers at the two ends of the tube bundle cooler.
10. A leak detection system for a tube bundle cooler, comprising:
the sealing plug is used for being connected with one end of the detected tube bundle in a sealing mode, the air inlet plug is used for being connected with the other end of the detected tube bundle in a sealing mode, and the air inlet plug is provided with an air inlet channel;
the storage device is communicated with the air inlet channel through a pipeline, the storage device is used for storing detection media, a stop valve is arranged at an air outlet of the storage device, the pipeline is communicated with a pressure gauge, and the communication position of the pressure gauge and the pipeline is positioned between the stop valve and the air inlet plug;
the detector is used for detecting whether the joint of the air inlet plug and the detected tube bundle and the joint of the sealing plug and the detected tube bundle leak detection media or not;
the plug quick-mounting tool is arranged on the end face of the tube bundle cooler and used for mounting the air inlet plug and the sealing plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310319322.1A CN116222918A (en) | 2023-03-28 | 2023-03-28 | Leakage detection method and leakage detection system for tube bundle cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310319322.1A CN116222918A (en) | 2023-03-28 | 2023-03-28 | Leakage detection method and leakage detection system for tube bundle cooler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116222918A true CN116222918A (en) | 2023-06-06 |
Family
ID=86571421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310319322.1A Pending CN116222918A (en) | 2023-03-28 | 2023-03-28 | Leakage detection method and leakage detection system for tube bundle cooler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116222918A (en) |
-
2023
- 2023-03-28 CN CN202310319322.1A patent/CN116222918A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101408466B (en) | Method and device for detecting leakage of shell type heat exchanger | |
| JP2000186897A (en) | Detecting method and device for leakage in heat exchanger for motorcar | |
| KR102326465B1 (en) | Sealing test device and method for battery case | |
| CN106679896B (en) | Helium leakage detection device for small tube sheet welding test piece | |
| KR101909619B1 (en) | Apparatus for testing for connection part of capillary | |
| CN110836753A (en) | Helium mass spectrum positive pressure detection method for plate-fin heat exchanger with closed chambers on two sides | |
| CN116222918A (en) | Leakage detection method and leakage detection system for tube bundle cooler | |
| JP2023533049A (en) | Apparatus for connecting gas-conducting conduit elements and method for connecting gas-conducting conduit elements | |
| CN117007252A (en) | Ultrasonic water meter pipe section tightness detection method | |
| WO2023021606A1 (en) | Airtightness testing device and airtightness testing method | |
| CN111735578B (en) | Safety valve air tightness test tool and test method | |
| CN206311278U (en) | Safety valve leakage test blanking cover | |
| CN211317647U (en) | Leak detection and treatment tool for water chamber copper pipe of water chilling unit | |
| CN212903716U (en) | Device for testing connectivity of automobile differential pressure pipe | |
| JP3709985B2 (en) | Differential pressure measuring device | |
| CN210513583U (en) | Leak-proof equipment detection device and test system | |
| CN211291780U (en) | Refrigerant temperature measuring structure | |
| GB2491886A (en) | A Turbocharger Conduit Connector | |
| CN218002848U (en) | Air cooling leak hunting device and air cooling leak hunting assembly | |
| CN219956327U (en) | Check tool for detecting quick connector of cooling water pipe | |
| CN111006823A (en) | Self-sealing test flange and sealing monitoring method | |
| US20120318040A1 (en) | System and method of detecting head gasket degradation | |
| CN214173645U (en) | Sealing mechanism of oil duct leakage testing machine | |
| CN209416616U (en) | A kind of thermocouple sheath sealing propertytest tooling | |
| CN215414796U (en) | Pressure testing device of pipeline |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |