CN212692655U - A tool for pressure test of heat exchanger with internal thread strengthening heat exchange tube - Google Patents
A tool for pressure test of heat exchanger with internal thread strengthening heat exchange tube Download PDFInfo
- Publication number
- CN212692655U CN212692655U CN202021431651.3U CN202021431651U CN212692655U CN 212692655 U CN212692655 U CN 212692655U CN 202021431651 U CN202021431651 U CN 202021431651U CN 212692655 U CN212692655 U CN 212692655U
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- heat exchange
- exchange tube
- heat exchanger
- shell
- internal thread
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- 238000012360 testing method Methods 0.000 title claims abstract description 52
- 238000005728 strengthening Methods 0.000 title description 5
- 238000007789 sealing Methods 0.000 claims abstract description 49
- 238000003466 welding Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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Abstract
本实用新型提供了一种用于内螺纹强化换热管换热器的耐压试验的工装。所述内螺纹强化换热管贯穿换热器两端的管板并固定在换热器上。所述工装包括设置在所述内螺纹强化换热管的两端的密封单元，且位于所述内螺纹强化换热管的其中一端的密封单元与一真空装置连接。所述密封单元包括壳体、内套环以及垫片。所述壳体嵌套在所述内螺纹强化换热管的两端，所述内套环位于所述壳体的内部并围绕所述内螺纹强化换热管周向设置，以与所述壳体在所述内螺纹强化换热管的端口形成密封腔体。所述壳体和所述内套环一端通过所述垫片抵靠在所述管板上。在连接所述真空装置的所述密封单元中，所述壳体设置有与所述密封腔体连通的通孔，以进行耐压试验。
The utility model provides a tool for the pressure resistance test of a heat exchanger with an inner thread reinforced heat exchange tube. The inner thread reinforced heat exchange tube penetrates the tube sheets at both ends of the heat exchanger and is fixed on the heat exchanger. The tooling includes sealing units arranged at both ends of the inner thread reinforced heat exchange tube, and the sealing unit located at one end of the inner thread reinforced heat exchange tube is connected to a vacuum device. The sealing unit includes a housing, an inner collar and a gasket. The shell is nested at both ends of the inner threaded reinforced heat exchange tube, and the inner collar is located inside the shell and circumferentially arranged around the inner threaded reinforced heat exchange tube, so as to be compatible with the shell. The body forms a sealed cavity at the port of the inner thread reinforced heat exchange tube. One end of the shell and the inner collar abuts against the tube sheet through the gasket. In the sealing unit connected to the vacuum device, the casing is provided with a through hole communicating with the sealing cavity, so as to carry out a pressure resistance test.
Description
Technical Field
The utility model relates to a withstand voltage test technical field especially relates to a withstand voltage test's frock for heat exchange tube heat exchanger is reinforceed to internal thread.
Background
Along with the upsizing and complication of the heat exchanger and the improvement of the whole technology, the heat exchange tube in the heat exchanger is widely applied to the fields of power, chemical engineering, petrochemical engineering, air conditioning engineering, refrigeration engineering and the like as a strong heat exchange heat conduction element, and the heat exchange area and the heat exchange efficiency of the heat exchanger are effectively improved. Meanwhile, because the working environment of the heat exchange tube is complex, for example, the heat exchange tube inside the boiler heat exchanger works in a high-temperature and high-pressure environment with diffused smoke for a long time and is in a corrosive atmosphere, the heat exchange tube needs to have very high performance indexes.
The pressure resistance test, which is a commonly used strength test method, is an essential step in testing the strength of the heat exchanger. In the prior art, the pressure test of the heat exchanger generally presses the shell side of the heat exchanger, and then the tube head of the heat exchange tube in the heat exchanger is checked to check the shell side strength and the tube side strength of the heat exchanger. If the heat exchange tube is damaged, water on the shell pass can leak into the inside of the heat exchange tube, and at the moment, the leaked water can automatically flow out after the heat exchanger is integrally inclined at a certain angle. However, for the heat exchanger with the heat exchange tube being the internal thread reinforced heat exchange tube, even if the internal thread reinforced heat exchange tube leaks after the test, water is not easy to flow out of the internal thread structure of the heat exchange tube, the observation difficulty is high, and the accuracy of the test result is influenced.
Disclosure of Invention
An object of the utility model is to provide a withstand voltage test's frock for heat exchange tube heat exchanger is reinforceed to the internal thread in the heat exchanger carries out withstand voltage test, is convenient for observe, record withstand voltage test's process and result to promote test efficiency.
In order to achieve the purpose, the utility model provides a withstand voltage test's frock for heat exchange tube heat exchanger is reinforceed to the internal thread. The tool comprises sealing units arranged at two ends of the internal thread reinforced heat exchange tube, and the sealing unit at one end of the internal thread reinforced heat exchange tube is connected with a vacuum device. The sealing unit comprises a shell, an inner lantern ring and a gasket, the shell is nested at two ends of the internal thread reinforced heat exchange tube, the inner lantern ring is located inside the shell and surrounds the internal thread reinforced heat exchange tube in the circumferential direction, so that the port of the internal thread reinforced heat exchange tube forms a sealing cavity with the shell, and the shell and one end of the inner lantern ring are abutted to the pipe plate through the gasket. In the sealing unit connected with the vacuum device, the shell is provided with a through hole communicated with the sealing cavity so as to carry out a pressure-resistant test.
Optionally, the inner collar is fixed to the inner wall of the housing by a screw thread.
Optionally, the outer surface of the inner sleeve ring is provided with an external thread structure, and the inner wall of the shell is provided with an internal thread structure matched with the external thread structure.
Optionally, the internal thread structure and the external thread structure are mutually matched inclined surface structures.
Optionally, the inner collar and the inner wall of the housing are arranged in an inclined surface manner.
Optionally, the through hole is connected with one port of a three-way pipe, and the other two ports of the three-way pipe are respectively connected with a hose and a pressure gauge, wherein the hose is connected with the vacuum device.
Optionally, the outer wall of the housing is provided with anti-slip threads.
Optionally, the material of the inner collar includes stainless steel.
Optionally, the gasket is made of rubber or graphite.
Optionally, two ends of the internal thread reinforced heat exchange tube penetrate through the tube plate and are fixed by welding.
To sum up, the utility model provides a withstand voltage test's frock for heat exchange tube heat exchanger is reinforceed to the internal thread. The internal thread reinforced heat exchange tube penetrates through tube plates at two ends of the heat exchanger and is fixed on the heat exchanger. The tool comprises sealing units arranged at two ends of the internal thread reinforced heat exchange tube, and the sealing units at one end of the internal thread reinforced heat exchange tube are connected with a vacuum device. Wherein the sealing unit includes a housing, an inner collar, and a gasket. The shell is nested at two ends of the internal thread reinforced heat exchange tube, the inner lantern ring is positioned inside the shell and surrounds the internal thread reinforced heat exchange tube in the circumferential direction, so that a sealing cavity is formed at a port of the internal thread reinforced heat exchange tube with the shell. The shell and one end of the inner lantern ring abut against the tube plate through the gasket. In the sealing unit connected with the vacuum device, the shell is provided with a through hole communicated with the sealing cavity so as to carry out a pressure-resistant test. The utility model discloses a heat exchange tube carries out withstand voltage test, is convenient for observe, record to internal thread strengthening heat exchange tube heat exchanger's withstand voltage test's frock internal thread strengthening heat exchange tube heat exchanger to promote test efficiency.
Drawings
Fig. 1 and fig. 2 are schematic structural diagrams of a tool for a pressure resistance test of an internally threaded reinforced heat exchange tube heat exchanger provided in the embodiment;
FIG. 3 is a schematic view of the tooling of FIG. 1 on a heat exchanger;
FIG. 4 is a schematic view of the tooling of FIG. 2 on a heat exchanger;
FIG. 5 is a schematic view of the overall structure of the tooling of FIGS. 3 and 4 mounted on a heat exchanger;
wherein the reference numbers are as follows:
1-a tube plate; 2-internal thread reinforced heat exchange tube; 21-welding seams;
3-a sealing unit; 31-a housing; 311-anti-slip threads; 32-an inner collar; 33-shim.
Detailed Description
The following description of the embodiments of the present invention will be described in more detail with reference to the drawings. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention.
Fig. 1 and fig. 2 are schematic structural diagrams of a sealing unit in a tool for a pressure test of an internally threaded reinforced heat exchange tube heat exchanger provided in this embodiment, and it should be noted that fig. 1 and fig. 2 are both half-sectional views, joint lines in fig. 1 and fig. 2 are both section lines, an upper half portion of the section lines in fig. 1 and fig. 2 is a sectional view, and a lower half portion of the section lines in fig. 1 and fig. 2 is a schematic structural diagram. The tool provided by the embodiment is used for the pressure test of the internal thread reinforced heat exchange tube 2. The internal thread reinforced heat exchange tube 2 penetrates through the tube plates 1 at two ends of the heat exchanger and is fixed on the heat exchanger. In this embodiment, the internal thread reinforced heat exchange tube 2 and the tube plate 1 are fixed by welding, and a weld 21 is formed at the interface between the internal thread reinforced heat exchange tube 2 and the tube plate 1. In other embodiments of the present invention, the fixing mode of the internal thread reinforced heat exchange tube 2 and the tube plate 1 can be adjusted according to actual needs, and the present invention does not limit this. The tool for the pressure test of the internal thread reinforced heat exchange tube heat exchanger comprises sealing units 3 arranged at two ends of the internal thread reinforced heat exchange tube 2, and the sealing units 3 at one end of the internal thread reinforced heat exchange tube 2 are connected with a vacuum device.
As can be seen from fig. 1 and 2, the sealing unit 3 includes sealing units 3 disposed at both ends of the internally threaded enhanced heat exchange tube 2. The sealing unit 3 comprises a shell 31, an inner lantern ring 32 and a gasket 33, the shell 31 is nested at two ends of the internal thread reinforced heat exchange tube 2, the inner lantern ring 32 is located inside the shell 31 and surrounds the internal thread reinforced heat exchange tube 2 in the circumferential direction, so that the shell 31 is located at a port of the internal thread reinforced heat exchange tube 2 to form a sealing cavity. The shell 31 and one end of the inner collar 32 are abutted against the tube plate 1 through the gasket 33. With continued reference to fig. 1, the outer wall of the housing 31 is provided with anti-slip threads 311 to facilitate the installation and removal of the sealing unit 3. The inner collar 32 is fixed to the inner wall of the housing 31 by a screw thread. Specifically, the outer surface of the inner sleeve ring 32 is provided with an external thread structure, the inner wall of the housing 31 is provided with an internal thread structure matched with the external thread structure, and the internal thread structure and the external thread structure are inclined plane structures matched with each other, so as to further improve the sealing performance of the sealing unit 3. Optionally, the inner collar 32 and the inner wall of the shell 31 are arranged in an inclined surface manner, so as to circumferentially seal two ends of the internal thread reinforced heat exchange tube 2. In addition, the inner collar 32 and the gasket 33 are both annular, and the inner diameters of the inner collar 32 and the gasket 33 are the same. The material of the inner collar 32 comprises stainless steel to extend the service life of the sealing unit. The material of the gasket 33 includes rubber and graphite so as to be deformed under pressure, eliminating a gap between the gasket 33 and other structures, and enhancing the sealing performance of the sealing unit 3.
With reference to fig. 1, in the tool for the pressure test of the internally threaded enhanced heat exchange tube heat exchanger according to the embodiment, the sealing unit 3 located at one end of the internally threaded enhanced heat exchange tube 2 is connected to a vacuum device. The through hole is connected with one port of a three-way pipe, the other two ports of the three-way pipe are respectively connected with a hose and a pressure gauge, wherein the hose is connected with the vacuum device (the vacuum device, the three-way pipe and the pressure gauge are not shown in figure 1), so that a pressure test can be conveniently carried out, and the process and the result of the pressure test can be observed and recorded. In other embodiments of the present invention, the vacuum device and the pressure gauge can be adjusted according to the actual need of the pressure test, for example, the pressure gauge can be replaced by a vacuum gauge, and the present invention does not limit this.
When the tool for the pressure test of the internal thread reinforced heat exchange tube heat exchanger is assembled. The sealing units 3 are respectively assembled at two ends of the internal thread reinforced heat exchange tube 2. Referring to fig. 1 and 2, the shell 31 is sleeved at one end of the internal thread reinforced heat exchange tube 2, and the gasket 33 is abutted against the tube plate 1. Because the gasket 33 is made of soft material, the gasket is deformed after being pressed by the shell 31 and the tube plate 1, gaps between the gasket 33 and the tube plate 1, the internal thread reinforced heat exchange tube 2, the shell 31 and the inner collar 32 are eliminated, and effective sealing between the sealing unit 3 and the heat exchanger is realized.
And then, performing a pressure test on the heat exchanger by using the tool for the pressure test of the internal thread reinforced heat exchange tube heat exchanger, referring to fig. 3-5, wherein the internal thread reinforced heat exchange tube 2 and the tube plate 1 are fixed by welding, and water or other media are filled in the shell side of the heat exchanger. Referring first to fig. 3 and 4, the sealing units 3 are fitted into both ends of the internally threaded reinforced heat exchange tube 2. Referring then to fig. 5, one of the sealing units 3 is connected to the tee. One end of the three-way pipe fitting is connected with the pressure gauge, the other end of the three-way pipe fitting is connected with the vacuum device (not shown in the figure) through a hose, and a valve is arranged between the vacuum device and the hose. And then, opening the vacuum device and the valve, pumping air in the internal thread reinforced heat exchange tube 2, and observing a pointer of a pressure gauge. And when the pointer points to 0MPa, closing the valve.
The shell side of the heat exchanger is then subjected to a conventional pressure test, applying pressure to the shell side. Because the shell side of the heat exchanger is filled with water or other media, whether the heat exchange tube leaks or not can be judged by observing the pressure gauge in the pressure resistance test process. For example, if the pointer of the pressure gauge is changed during the pressure resistance test, the internal thread reinforced heat exchange tube 2 leaks. In other embodiments of the present invention, the internal thread reinforced heat exchange tube 2 can be replaced by a heat exchange tube with other structure, and the present invention is not limited thereto.
To sum up, the utility model provides a withstand voltage test's frock for heat exchange tube heat exchanger is reinforceed to the internal thread. The internal thread reinforced heat exchange tube penetrates through tube plates at two ends of the heat exchanger and is fixed on the heat exchanger. The tool comprises sealing units arranged at two ends of the internal thread reinforced heat exchange tube, and the sealing units at one end of the internal thread reinforced heat exchange tube are connected with a vacuum device. The sealing unit includes a housing, an inner collar, and a gasket. The shell is nested at two ends of the internal thread reinforced heat exchange tube, the inner lantern ring is positioned inside the shell and surrounds the internal thread reinforced heat exchange tube in the circumferential direction, so that a sealing cavity is formed at a port of the internal thread reinforced heat exchange tube with the shell. The shell and one end of the inner lantern ring abut against the tube plate through the gasket. In the sealing unit connected with the vacuum device, the shell is provided with a through hole communicated with the sealing cavity so as to carry out a pressure-resistant test. The utility model discloses a heat exchange tube carries out withstand voltage test, is convenient for observe, record to internal thread strengthening heat exchange tube heat exchanger's withstand voltage test's frock internal thread strengthening heat exchange tube heat exchanger to promote test efficiency.
The above description is only for the preferred embodiment of the present invention, and does not limit the present invention. Any technical personnel who belongs to the technical field, in the scope that does not deviate from the technical scheme of the utility model, to the technical scheme and the technical content that the utility model discloses expose do the change such as the equivalent replacement of any form or modification, all belong to the content that does not break away from the technical scheme of the utility model, still belong to within the scope of protection of the utility model.
Claims (10)
1. The tool for the pressure test of the internal thread reinforced heat exchange tube heat exchanger is characterized in that the internal thread reinforced heat exchange tube penetrates through tube plates at two ends of the heat exchanger and is fixed on the heat exchanger, the tool comprises sealing units arranged at two ends of the internal thread reinforced heat exchange tube, and the sealing unit at one end of the internal thread reinforced heat exchange tube is connected with a vacuum device; the sealing unit comprises a shell, an inner sleeve ring and a gasket, the shell is nested at two ends of the inner thread reinforced heat exchange tube, the inner sleeve ring is located inside the shell and surrounds the inner thread reinforced heat exchange tube in circumferential direction, so that the shell is located at a port of the inner thread reinforced heat exchange tube to form a sealing cavity, the shell and one end of the inner sleeve ring are abutted to the gasket on the tube plate and connected with the vacuum device in the sealing unit, and the shell is provided with a through hole communicated with the sealing cavity to perform a pressure test.
2. The tooling for the pressure test of the internally threaded enhanced heat exchange tube heat exchanger as recited in claim 1, wherein the inner collar is fixed on the inner wall of the shell by threads.
3. The tool for the pressure test of the internally threaded reinforced heat exchange tube heat exchanger as recited in claim 2, wherein the outer surface of the inner collar is provided with an external thread structure, and the inner wall of the shell is provided with an internal thread structure matched with the external thread structure.
4. The tooling for the pressure test of the internally threaded enhanced heat exchange tube heat exchanger as recited in claim 3, wherein the internally threaded structure and the externally threaded structure are mutually matched inclined surface structures.
5. The tooling for the pressure test of the internally threaded enhanced heat exchange tube heat exchanger as recited in claim 1, wherein the inner collar is arranged against the inner wall of the shell in an inclined plane.
6. The tool for the pressure test of the internally threaded reinforced heat exchange tube heat exchanger as claimed in claim 1, wherein the through hole is connected with one port of a three-way pipe, and the other two ports of the three-way pipe are respectively connected with a hose and a pressure gauge, wherein the hose is connected with the vacuum device.
7. The tool for the pressure test of the internally threaded enhanced heat exchange tube heat exchanger as claimed in claim 1, wherein the outer wall of the shell is provided with anti-slip threads.
8. The tooling for the pressure test of the internally threaded reinforced heat exchange tube heat exchanger as recited in claim 1, wherein the material of the inner collar comprises stainless steel.
9. The tooling for the pressure test of the internally threaded reinforced heat exchange tube heat exchanger as recited in claim 1, wherein the gasket is made of rubber or graphite.
10. The tool for the pressure test of the internally threaded enhanced heat exchange tube heat exchanger as claimed in claim 1, wherein both ends of the internally threaded enhanced heat exchange tube are fixed by welding after penetrating through the tube plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021431651.3U CN212692655U (en) | 2020-07-20 | 2020-07-20 | A tool for pressure test of heat exchanger with internal thread strengthening heat exchange tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021431651.3U CN212692655U (en) | 2020-07-20 | 2020-07-20 | A tool for pressure test of heat exchanger with internal thread strengthening heat exchange tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212692655U true CN212692655U (en) | 2021-03-12 |
Family
ID=74899646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021431651.3U Expired - Fee Related CN212692655U (en) | 2020-07-20 | 2020-07-20 | A tool for pressure test of heat exchanger with internal thread strengthening heat exchange tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212692655U (en) |
-
2020
- 2020-07-20 CN CN202021431651.3U patent/CN212692655U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210312 Termination date: 20210720 |