CN212539975U - Pressure test tool structure - Google Patents
Pressure test tool structure Download PDFInfo
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- CN212539975U CN212539975U CN202021325365.9U CN202021325365U CN212539975U CN 212539975 U CN212539975 U CN 212539975U CN 202021325365 U CN202021325365 U CN 202021325365U CN 212539975 U CN212539975 U CN 212539975U
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- block
- sealing
- finned tube
- positioning
- clamping
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Abstract
The utility model provides a withstand voltage test frock structure for the withstand voltage test of finned tube, including clamping module, orientation module and air intake and exhaust module. The clamping modules are arranged at two ends of the finned tube and comprise clamping blocks and sealing units, the clamping blocks are nested at two ends of the finned tube, and the sealing units are arranged inside the clamping blocks and circumferentially arranged around the finned tube so as to respectively form a sealing space communicated with the finned tube at two ends of the finned tube. The positioning module comprises a channel steel, a positioning triangular block and a fastening boss, the clamping block is arranged on the channel steel and abuts against the positioning triangular block, the fastening boss is arranged on the inclined plane of the positioning triangular block, and the positioning triangular block and the fastening boss are fixed on the channel steel through a positioning fastener. The air inlet and exhaust module is arranged on the clamping block at one end of the finned tube and communicated with the sealed space. The utility model discloses effectively seal the finned tube under the condition of not destroying the finned tube, promote withstand voltage test's efficiency and accuracy.
Description
Technical Field
The utility model relates to a withstand voltage test technical field especially relates to a withstand voltage test frock structure for the withstand voltage test of finned tube.
Background
With the upsizing and complication of the heat exchanger and the improvement of the whole technology, the finned tube is taken as a strong heat exchange heat conduction element, is widely applied to the fields of power, chemical engineering, petrochemical engineering, air conditioning engineering, refrigeration engineering and the like, and effectively improves the heat exchange area and the heat exchange efficiency of devices. Due to the complex operating environment of the finned tubes, for example, the finned tubes inside the boiler heat exchanger operate in a high-temperature and high-pressure environment with diffused flue gas for a long time and in a corrosive atmosphere, the finned tubes need to have high performance indexes.
In the manufacturing process of the finned tube, the heat exchange tube with the finned tube structure needs to be subjected to a pressure test and is qualified by 100 percent so as to ensure the integral strength and the tightness of the finned tube. At present, the pressure test of the finned tube (especially the finned tube with an internal thread structure) has certain difficulty. When a pressure test is performed with water, water is liable to remain in the threads inside the finned tubes, and the external structure of the finned tubes is also disadvantageous in observing the oozing of water. When a pressure test is carried out by air, for the finned tube with the internal thread structure, a proper tube cap is difficult to find to effectively seal the internal thread structure of the finned tube; if the internal thread structure is sealed by utilizing a welded pipe cap or a stop block, the welded junction needs to be cut again, the original specification and the internal thread structure of the finned pipe can be damaged, and the pressure test has low efficiency, wastes time and labor and wastes resources.
Disclosure of Invention
An object of the utility model is to provide a withstand voltage test frock structure for the withstand voltage test of finned tube. Under the condition that the original specification and structure of the finned tube are not damaged, the internal thread structure of the finned tube is effectively sealed, and the efficiency of the pressure test and the accuracy of the result are improved.
In order to achieve the above object, the utility model provides a withstand voltage test frock structure for the withstand voltage test of finned tube, include:
the clamping modules are arranged at two ends of the finned tube and comprise clamping blocks and sealing units, the clamping blocks are nested at two ends of the finned tube, and the sealing units are arranged inside the clamping blocks and circumferentially around the finned tube so as to respectively form a sealing space communicated with the finned tube at two ends of the finned tube;
the positioning module comprises a channel steel, a positioning triangular block and a fastening boss, the clamping block is arranged on the channel steel, the positioning triangular block abuts against the clamping block, the fastening boss is arranged on the inclined surface of the positioning triangular block, and the positioning triangular block and the fastening boss are fixed on the channel steel through a positioning fastener;
and the air inlet and exhaust module is arranged on the clamping block at one end of the finned tube and communicated with the sealed space.
Optionally, the sealing unit includes a sealing block, a pressing block and a sealing platform, the sealing block abuts against the end face of the finned tube, the sealing platform is located at the edge of the clamping block, and the pressing block is located between the sealing block and the sealing platform and fixed to the sealing platform through a sealing fastening assembly.
Optionally, the sealing block and the end of the pressing block in contact are provided with a concave structure, the pressing block and the end of the sealing block in contact are provided with a convex structure, and the concave structure and the convex structure are matched with each other.
Optionally, a wedge-shaped sealing gasket is arranged between the sealing block and the clamping block.
Optionally, a plurality of reinforcing rings are arranged inside the sealing block.
Optionally, the wedge-shaped sealing gasket is made of graphite or rubber, and the reinforcing ring is made of Cr-Mo.
Optionally, the positioning triangular block comprises a rib plate or a solid triangular block.
Optionally, the positioning fastener includes bolts penetrating through the fastening boss, the positioning triangular block and the channel steel, and nuts respectively disposed at two ends of the bolts.
Optionally, the channel-section steel is the I-steel structure, just be provided with the circular through-hole of a plurality of equidistance on the channel-section steel, the diameter of through-hole with the diameter of bolt cooperatees among the positioning fastener.
Optionally, the air inlet and exhaust module comprises an air inlet tee joint, an exhaust tee joint, a pressure gauge valve and a pressure gauge which are connected to the clamping block, the air inlet tee joint is connected with an air inlet valve and an air inlet pipe, and the exhaust tee joint is connected with an exhaust pipe and an exhaust valve.
Optionally, one end of the air inlet tee joint is connected with the through hole of the clamping block and communicated with the sealed space.
Optionally, the nominal diameters of the intake pipe, the exhaust pipe, the intake tee and the exhaust tee are the same.
Optionally, the inlet and outlet pipe diameters of the inlet valve, the outlet valve and the pressure gauge valve are the same in specification, nominal diameter, abrasion index and material.
Optionally, the measuring range of the pressure gauge is twice of the pressure in the pressure resistance test, and the precision grade of the pressure gauge includes 1.6 grade or 2.5 grade.
To sum up, the utility model provides a withstand voltage test frock structure for the withstand voltage test of finned tube. The pressure-resistant test tool structure comprises a clamping module, a positioning module and an air inlet and exhaust module. The clamping modules are arranged at two ends of the finned tube and comprise clamping blocks and sealing units, the clamping blocks are nested at two ends of the finned tube, and the sealing units are arranged inside the clamping blocks and surround the finned tube in the circumferential direction so as to respectively form a sealing space communicated with the finned tube at two ends of the finned tube. The positioning module comprises a channel steel, three positioning blocks and a fastening boss, the clamping block is arranged on the channel steel, the three positioning blocks are abutted against the clamping block, the fastening boss is arranged on the inclined plane of the three positioning blocks, and the three positioning blocks reach the fastening boss which is fixed on the channel steel through a positioning fastener. The air inlet and exhaust module is arranged on the clamping block at one end of the finned tube and communicated with the sealed space. The utility model provides a withstand voltage test frock structure is not destroying under the original specification of finned tube and the condition of structure, it is right the internal thread structure of finned tube effectively seals, promotes withstand voltage test's efficiency and the accuracy of result.
Drawings
Fig. 1 is a schematic structural view of a pressure resistance test tool provided in this embodiment;
fig. 2 is a schematic structural diagram of a clamping module in the pressure resistance test tool structure provided in this embodiment;
fig. 3 is a half sectional view of a positioning module in the pressure resistance test tooling structure provided in this embodiment;
fig. 4 is a schematic structural view of a channel steel in the pressure test tool structure provided in this embodiment;
wherein the reference numbers are as follows:
1-finned tubes;
2-a positioning module; 21-channel steel; 22-positioning a triangular block; 23-fastening a boss; 24-positioning fasteners;
3-an air intake and exhaust module; 31-an intake valve; 32-an air inlet pipe; 33-an air inlet tee; 34-an exhaust tee; 35-pressure gauge valve; 36-pressure gauge; 37-an exhaust pipe; 38-exhaust valve;
4-clamping the module; 41-clamping a clamping block; 42-wedge shaped sealing block; 43-a sealing block; 44-a compression block; 45, a sealing platform; 46-sealing the fastener.
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 is a schematic structural diagram of a pressure test tool provided in this embodiment. It should be noted that in fig. 1, the dotted line portion of the positioning module 2 is only a partial structure of the positioning module 2, and the dotted line portion of the clamping module 4 is only a partial structure of the clamping module 2. The pressure test tool structure of the finned tube 1 comprises a positioning module 2, an air inlet and exhaust module 3 and a clamping module 4. In this embodiment, the finned tube 1 is an internal thread structure, in other embodiments of the present invention, the finned tube 1 may be another structure, and the present invention is not limited thereto.
Fig. 2 is a schematic structural view of the clamping module 4 in this embodiment. Referring to fig. 2, the clamping modules 4 are disposed at both ends of the finned tube 1 and include clamping blocks 41 and sealing units. The clamping blocks 41 are nested at two ends of the finned tube 1, the sealing units are arranged inside the clamping blocks 41 and circumferentially around the finned tube 1, and two sealing spaces communicated with the finned tube 1 are formed at two ends of the finned tube 1 respectively. The sealing unit comprises a sealing block 43, a pressing block 44 and a sealing platform 45, wherein the sealing block 43 abuts against the end face of the finned tube 1, the sealing platform 45 is located at the edge position of the clamping block 41, and the pressing block 44 is located between the sealing block 43 and the sealing platform 45 and is fixed with the sealing platform 45 through a sealing fastening assembly 46.
A wedge-shaped sealing gasket 42 is arranged between the sealing block 43 and the clamping block 41. The wedge-shaped sealing gasket 42 is made of a flexible material (such as graphite or rubber), and can deform to some extent under the action of pressure, so that gaps between the wedge-shaped sealing gasket 42 and the clamping block 41 and between the wedge-shaped sealing gasket and the sealing block 43 are eliminated, and the sealing performance of the clamping module 4 is ensured. The sealing block 43 is internally provided with a plurality of reinforcing rings made of Cr-Mo steel, has the characteristics of high hardness, high strength and rigidity and the like, and prevents the sealing block 43 from excessively deforming. The sealing block 43 with the one end that compact block 44 contacted is provided with concave structure, compact block 44 with the one end that sealing block 43 contacted is provided with protruding type structure, concave structure with protruding type structure mutually supports. In this embodiment, the concave structure and the convex structure are both trapezoidal structures, so that the contact surfaces of the sealing block 43 and the pressing block 44 are increased from one to five, and when the sealing performance of a part of the contact surfaces fails, a part of the contact surfaces still maintain effective sealing, and the sealing performance of the clamping module 4 is enhanced. In other embodiments of the present invention, the concave structure and the convex structure may be other polygonal structures or semicircular structures that are matched with each other, so as to increase the number of contact surfaces between the sealing block 43 and the pressing block 44. The pressing block 44 is provided with a threaded hole, the sealing platform 45 is provided with a threaded through hole, and the threaded hole and the threaded through hole are matched with a screw in the sealing fastener 46. The sealing fastener 46 includes a screw, a nut, and a washer, and the screw fixes the pressing block 44 and the sealing table 45 through the threaded hole and the threaded through hole.
Fig. 3 is a half-sectional view of the positioning module 2 according to the present embodiment. Referring to fig. 3, the positioning module 2 includes a channel-wrapping steel 21, a positioning triangular block 22 and a fastening boss 23. Clamping block 41 sets up on the channel-section steel 21, the triangle piece 22 of location supports and leans on clamping block 41, fastening boss 23 is located the inclined plane of triangle piece 22 of location. The positioning triangular block 22 and the fastening boss 23 are fixed on the channel steel 21 through a positioning fastener 24. The channel steel 21 is of an I-shaped steel structure and comprises a No. 20 structure, a Q245 structure and a Q345 structure. Referring to fig. 4, the channel steel 21 is provided with a plurality of equidistant circular through holes, so that the position of the positioning module 2 can be adjusted according to the length of the finned tube 1, and the application range is expanded. The distance between the through holes can be selected according to the length of the channel steel 21 and actual needs, and the embodiment does not limit the distance. In this embodiment, location triangle piece 22 is solid triangle piece the utility model discloses an in other embodiments, location triangle piece 22 still can be for floor isotructure, in order to guarantee orientation module 2's stability. The positioning fastener 24 comprises a bolt penetrating through the channel steel 21, the positioning triangular block 22 and the fastening boss 23 and two nuts respectively arranged at two ends of the bolt, and the diameter of the through hole in the channel steel 21 is matched with the diameter of the bolt in the positioning fastener 24.
With reference to fig. 1, the air intake and exhaust module 3 is disposed on the clamping module 4 and is communicated with the sealed space. The air intake and exhaust module 3 comprises an air intake valve 31, an air intake pipe 32, an air intake tee 33, an exhaust tee 34, a pressure gauge valve 35 and a pressure gauge 36 which are connected in sequence, and one end of the exhaust tee 34 is also connected with an exhaust pipe 37 and an exhaust valve 38 in sequence. The nominal diameters of the intake pipe 32, the intake tee 33, the exhaust tee 34, and the exhaust pipe 35 are the same. The specifications, the nominal diameters, the wear indexes and the material materials of the inlet and outlet pipe diameters of the air inlet valve 31, the pressure gauge valve 35 and the exhaust valve 38 are the same. The range of the pressure gauge 36 needs to be adjusted according to the test environment of the pressure test, and is usually selected to be twice of the pressure in the pressure test. Optionally, the accuracy of the pressure gauge 36 may be 1.6 or 2.5. In other embodiments of the present invention, the accuracy grade of the pressure gauge 36 can be adjusted according to actual needs, and the present invention is not limited thereto. The air intake and exhaust module 3 is connected with the through hole of the connecting clamping block 41 through the air intake tee 33, so that the air intake and exhaust module is communicated with the sealed space. The diameter of the through hole of the clamping block 41 is the same as the nominal pipe diameter of the air inlet tee 33, so that effective sealing between the air inlet and exhaust module 3 and the clamping module 4 is ensured.
Referring to fig. 1, when assembling the pressure test tooling structure provided by the present embodiment, a positioning module 2 is fixed first, and the positioning module 2 abuts against clamping modules 4 embedded at two ends of the finned tube 1. And then adjusting the other positioning module 2 to a proper position and fixing according to the lengths of the finned tube 1 and the clamping module 4. The method for fixing the positioning module 2 comprises the following steps: the two bolts of the positioning fastener 24 are tightened. In order to ensure the tightness of the pressure test tool structure, after the position of the finned tube 1 is fixed, a certain pressure can be applied to the sealing fastener 46, so that the pressure between each component in the clamping module 4 is increased, the wedge-shaped sealing block 42 is deformed, and effective sealing is realized. At the moment, the clamping module 4 effectively seals two ends of the finned tube 1, and a sealed space is formed inside the finned tube 1.
Before the pressure test tool structure provided by the embodiment is used for carrying out a pressure test, a preliminary experiment needs to be carried out to ensure the sealing property. The air inlet valve 31 is first opened so that air at a pressure of 0.1MPa is introduced into the air inlet tube 32 and enters the interior of the finned tube 1 through the air inlet tee 33 and the clamping block 41. Then, the exhaust valve 38 is closed, the pressure gauge valve 35 is opened, the index of the pressure gauge 36 is observed, and the intake valve 31 is closed after the index is 0.1 MPa. And finally, waiting for 10 minutes, and if the index of the pressure gauge 36 is not changed, determining that the pressure resistance test tool structure is qualified.
The steps of performing the pressure test by using the pressure test tool structure provided by the embodiment are substantially the same as those of the preliminary experiment. The air inlet valve 31 is first opened so that air at test pressure is passed into the air inlet tube 32 and into the interior of the finned tube 1 through the air inlet tee 33 and clamping block 41. The exhaust valve 38 is then closed, the pressure gauge valve 35 is opened, the index of the pressure gauge 36 is observed, and the intake valve 31 is closed after the index is the test pressure. And finally, waiting for at least 15 minutes, and if the index of the pressure gauge 36 is not changed, determining that the pressure test tool structure is qualified.
After the preliminary experiment or the pressure test is completed, the pressure test tool structure needs to be relieved, that is, the exhaust valve 38 is opened to exhaust air in the pressure test tool structure until the index of the pressure gauge 36 is zero.
To sum up, the utility model provides a withstand voltage test frock structure for the withstand voltage test of finned tube. The pressure-resistant test tool structure comprises a clamping module, a positioning module and an air inlet and exhaust module. The clamping modules are arranged at two ends of the finned tube and comprise clamping blocks and sealing units, the clamping blocks are nested at two ends of the finned tube, and the sealing units are arranged inside the clamping blocks and surround the finned tube in the circumferential direction so as to respectively form a sealing space communicated with the finned tube at two ends of the finned tube. The positioning module comprises a channel steel, three positioning blocks and a fastening boss, the clamping block is arranged on the channel steel, the three positioning blocks are abutted against the clamping block, the fastening boss is arranged on the inclined plane of the three positioning blocks, and the three positioning blocks reach the fastening boss which is fixed on the channel steel through a positioning fastener. The air inlet and exhaust module is arranged on the clamping block at one end of the finned tube and communicated with the sealed space. The utility model provides a withstand voltage test frock structure is not destroying under the original specification of finned tube and the condition of structure, it is right the internal thread structure of finned tube effectively seals, promotes withstand voltage test's efficiency and the accuracy of result.
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 (14)
1. The utility model provides a withstand voltage test frock structure for the withstand voltage test of finned tube, its characterized in that includes:
the clamping modules are arranged at two ends of the finned tube and comprise clamping blocks and sealing units, the clamping blocks are nested at two ends of the finned tube, and the sealing units are arranged inside the clamping blocks and circumferentially around the finned tube so as to respectively form a sealing space communicated with the finned tube at two ends of the finned tube;
the positioning module comprises a channel steel, a positioning triangular block and a fastening boss, the clamping block is arranged on the channel steel, the positioning triangular block abuts against the clamping block, the fastening boss is arranged on the inclined surface of the positioning triangular block, and the positioning triangular block and the fastening boss are fixed on the channel steel through a positioning fastener;
and the air inlet and exhaust module is arranged on the clamping block at one end of the finned tube and communicated with the sealed space.
2. A pressure test tool structure according to claim 1, wherein the sealing unit comprises a sealing block, a pressing block and a sealing table, the sealing block abuts against the end face of the finned tube, the sealing table is located at the edge position of the clamping block, and the pressing block is located between the sealing block and the sealing table and fixed with the sealing table through a sealing fastening assembly.
3. A pressure test tool structure as claimed in claim 2, wherein a concave structure is provided at the end of the sealing block contacting the pressing block, a convex structure is provided at the end of the pressing block contacting the sealing block, and the concave structure and the convex structure are engaged with each other.
4. A pressure test tooling structure according to claim 2, wherein a wedge-shaped sealing gasket is arranged between the sealing block and the clamping block.
5. A pressure test tool structure as claimed in claim 4, wherein a plurality of reinforcing rings are arranged inside the sealing block.
6. A pressure test tool structure as claimed in claim 5, wherein the wedge-shaped sealing gasket is made of graphite or rubber, and the reinforcing ring is made of Cr-Mo.
7. A pressure test tooling structure according to claim 1, wherein the positioning triangular blocks comprise ribbed plates or solid triangular blocks.
8. A pressure test tool structure as claimed in claim 1, wherein the positioning fastener includes a bolt passing through the fastening boss, the positioning triangular block and the channel steel, and nuts respectively disposed at two ends of the bolt.
9. A pressure test tool structure as claimed in claim 8, wherein the channel steel is an I-steel structure, and a plurality of equidistant circular through holes are arranged on the channel steel, and the diameter of each through hole is matched with the diameter of a bolt in the positioning fastener.
10. A pressure test tool structure as claimed in claim 1, wherein the air inlet and outlet module comprises an air inlet tee joint, an air outlet tee joint, a pressure gauge valve and a pressure gauge connected to the clamping block, the air inlet tee joint is connected with an air inlet valve and an air inlet pipe, and the air outlet tee joint is connected with an air outlet pipe and an air outlet valve.
11. A pressure test tooling structure according to claim 10, wherein one end of the inlet tee is connected to the through hole of the clamping block and is communicated with the sealed space.
12. A pressure test tooling structure according to claim 10, wherein the nominal diameters of the inlet pipe, the outlet pipe, the inlet tee and the outlet tee are the same.
13. A pressure test tool structure as claimed in claim 10, wherein the inlet and outlet pipe diameters of the inlet valve, the outlet valve and the pressure gauge valve are the same in specification, nominal diameter, wear index and material.
14. A pressure test tool structure as claimed in claim 10, wherein the range of the pressure gauge is twice of the pressure in the pressure test, and the accuracy grade of the pressure gauge includes 1.6 grade or 2.5 grade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021325365.9U CN212539975U (en) | 2020-07-08 | 2020-07-08 | Pressure test tool structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021325365.9U CN212539975U (en) | 2020-07-08 | 2020-07-08 | Pressure test tool structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212539975U true CN212539975U (en) | 2021-02-12 |
Family
ID=74521694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021325365.9U Expired - Fee Related CN212539975U (en) | 2020-07-08 | 2020-07-08 | Pressure test tool structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212539975U (en) |
-
2020
- 2020-07-08 CN CN202021325365.9U patent/CN212539975U/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 |
Granted publication date: 20210212 Termination date: 20210708 |
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| CF01 | Termination of patent right due to non-payment of annual fee |