CN213336683U - Pressure test tool for tube bundle of air cooler - Google Patents
Pressure test tool for tube bundle of air cooler Download PDFInfo
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- CN213336683U CN213336683U CN202022556245.6U CN202022556245U CN213336683U CN 213336683 U CN213336683 U CN 213336683U CN 202022556245 U CN202022556245 U CN 202022556245U CN 213336683 U CN213336683 U CN 213336683U
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Abstract
The utility model provides a pressure testing frock for tube bank of air cooler, includes: the air cooler comprises a connecting pipe (1), a connector (2) arranged at one end of the connecting pipe and used for being inserted into a pipe bundle (72), a fastener sleeved on the connecting pipe to connect the connecting pipe to the air cooler, and a first sealing ring (4) sleeved on the connector (2), wherein a flange (21) is arranged at the end part, close to the connecting pipe (1), of the connector (2), and the outer diameter of the first sealing ring (4) is larger than the inner diameter of the pipe bundle (72) and is arranged corresponding to the flange (21); the sealing device is characterized by further comprising a sleeve (6), the sleeve (6) is sleeved on the connecting pipe (1) and located between the fastening piece and the flange (21), the sleeve (6) can abut against the flange (21) under the action of the fastening piece, and then the first sealing ring (4) is pressed on the end face of the pipe bundle (72) to achieve sealing. Compared with the prior art, the sealing performance can be improved.
Description
Technical Field
The utility model belongs to the technical field of the pipe bundle leak hunting, concretely relates to a pressure testing frock for air cooler's pipe bundle.
Background
A large number of air cooling devices are arranged in oil refining and chemical engineering devices, when the air cooling devices are routinely overhauled, integral pressure test leakage detection needs to be carried out on air cooling tube bundles, and the existing pressure test leakage detection method is to additionally arrange pressure test blind plates at an inlet and an outlet of a tube box to detect whether the air cooling tube bundles have leakage or not. However, due to the small spacing between the tube bundles and the dense distribution, it is difficult to find the specific leakage position by the leakage detection method.
In order to determine the leakage position of the tube bundle, a single-tube pressure test device is designed, for example, a structure disclosed in a novel utility model patent with patent number ZL201621153995.6, namely a tube bundle pressure test leakage detection device (No. CN206300758U), the single-tube pressure test device comprises a single-tube pressure test head, a pressurizing device, a pressure monitoring device and a pressure relief pipeline, wherein one end of the single-tube pressure test head is a conical nozzle, a sealing ring is arranged on the conical nozzle, the other end of the conical nozzle is connected with the pressurizing device, and an ear ring and a locking nut are arranged on the tube wall of the single-tube pressure test; the pressure monitoring device and the pressure relief pipeline are installed on a pressurizing pipeline of the pressurizing device in parallel. The utility model discloses a confirm the regional back of leaking at whole pressure testing, carry out the single tube pressure testing to the heat exchange tube in the leakage region, avoided the air cooler to block up the heat exchange efficiency decline that the pipe caused on a large scale, improved the life of air cooler.
Although the pressure test head of the leak detection device is provided with a circle of sealing ring to form static seal with the inner wall of the pipe orifice of the pipe bundle, the risk of pressure test fluid leakage still exists during pressure test and leakage detection.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that to prior art's current situation, provide a can improve sealing performance's a pressure testing frock that is used for air cooler's tube bank.
The utility model provides a technical scheme that above-mentioned technical problem adopted does: the utility model provides a pressure testing frock for tube bank of air cooler, includes: take over, locate one of taking over serve be used for inserting joint, the cover in the tube bank to establish on the taking over in order to connect the fastener on the air cooler with the taking over and the cover establish the first sealing washer on connecting, take over and connect in the axial offer the pressure testing passageway that supplies the fluid to pass through, its characterized in that:
a flange is arranged at the end part of the joint close to the connecting pipe, and the outer diameter of the first sealing ring is larger than the inner diameter of the pipe bundle and is arranged corresponding to the flange; the sealing device is characterized by further comprising a sleeve, the sleeve is sleeved on the connecting pipe and located between the fastening piece and the flange, the sleeve can abut against the flange under the action of the fastening piece, and the first sealing ring is further pressed on the end face of the pipe bundle to achieve sealing.
Furthermore, the other end of the connecting pipe is connected with a connector for connecting an external pipeline. So that the fluid in the external pipeline can enter the tube bundle through the connecting pipe and the joint.
The utility model provides a technical scheme that above-mentioned technical problem adopted still can be for: the utility model provides a pressure testing frock for tube bank of air cooler, includes: take over, locate one of taking over and serve joint, the cover that is used for inserting in the tube bank on one, establish on taking over in order to connect the fastener on the air cooler with taking over and establish the first sealing washer on connecting, its characterized in that:
the inside of the connecting pipe and the joint is of a solid structure;
a flange is arranged at the end part of the joint close to the connecting pipe, and the outer diameter of the first sealing ring is larger than the inner diameter of the pipe bundle and is arranged corresponding to the flange; the sealing device is characterized by further comprising a sleeve, the sleeve is sleeved on the connecting pipe and located between the fastening piece and the flange, the sleeve can abut against the flange under the action of the fastening piece, and the first sealing ring is further pressed on the end face of the pipe bundle to achieve sealing.
The pressure test tool can be used as a plug for pressure test by designing the inside of the connecting pipe and the joint into a solid structure.
In each scheme, the joint and the connecting pipe are integrated into a connecting piece; or the joint and the connecting pipe are two independent pieces and are connected in a welding mode.
In order to further improve the sealing performance, the pipe bundle sealing device further comprises a second sealing ring, wherein the second sealing ring is sleeved on the joint and is in sealing fit with the inner wall of the pipe bundle.
Further, the second sealing rings are at least two and are distributed at intervals. To achieve multiple seals.
Furthermore, an annular groove is formed in the connector along the circumferential direction, and the second sealing ring is arranged in the annular groove. So, can realize the spacing of second sealing washer, avoid it to produce the displacement when the joint is inserted or is extracted.
In each of the above solutions, the fastener is a bolt, the bolt has an external thread matching with a threaded hole on a pipe box of the air cooler, and a through hole for the pipe to pass through is axially formed in the bolt. Therefore, the sleeve can be tightly pressed on the flange by screwing the bolt, so that the installation is convenient; during disassembly, the bolt is unscrewed, the connecting pipe is pulled out, and in the pulling-out process, the joint and the sleeve are taken out together with the connecting pipe, so that the disassembly is convenient. Certainly, the fastening piece is not limited to the structure of the bolt, and the fastening piece can also be a buckle structure sleeved on the connecting pipe and clamped with the air cooler; or the fastener may take other configurations.
After the air cooler runs for a long time, the inside of the tube bundle of the air cooler is scaled and corroded, and in order to facilitate the plug to be inserted into the tube bundle, the end part of the joint far away from the connecting pipe is preferably in a conical structure.
Compared with the prior art, the utility model has the advantages of: the connecting pipe, the joint, the fastener, the first sealing ring and the sleeve are arranged, the flange is arranged on the joint, the fastener can press the flange through the sleeve, and then the first sealing ring is pressed between the flange and the end face of the pipe bundle, so that the pipe orifice of the pipe bundle can be sealed well, and fluid is prevented from flowing out from a gap between the pipe bundle and the joint; when the pressure test tool is installed, the fastener is connected to the air cooler, the flange is abutted to the end face of the tube bundle through the first sealing ring, so that the installed structural strength and stability are high, and the pressure test tool can be stably operated and used; meanwhile, the structure that the sleeve, the fastener and the connecting pipe are sleeved inside and outside is convenient to mount and dismount.
Therefore, the utility model has the advantages of simple structure and reasonable design, loading and unloading are convenient, firm in connection, can accurately find out the leak source during the application, have improved maintenance quality and efficiency.
Drawings
Fig. 1 is a usage state diagram of a first group of pressure testing tools in the embodiment of the present invention;
fig. 2 is a schematic structural view of a joint according to an embodiment of the present invention;
fig. 3 is a usage status diagram of a second group of pressure testing tools in the embodiment of the present invention;
FIG. 4 is a state diagram of the first and second sets of pressure testing tools used simultaneously in the embodiment of the present invention;
fig. 5 is a state diagram of the embodiment of the present invention when only the first group of pressure testing tools is used.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
As shown in fig. 1-5, for the utility model discloses a preferred embodiment of a pressure testing frock for tube bank of air cooler, this pressure testing frock is including taking over 1, connecting 2, bolt 3, first sealing washer 4, second sealing washer 5 and sleeve pipe 6. The air cooler 7 is constructed as described in the prior art and includes a tube sheet 71, a tube bundle 72 supported at its ends on the tube sheet 71, and a tube box 73 connected to the tube sheet 71.
The adapter 1 is in a long strip shape extending axially, the connector 2 is arranged at one end of the adapter 1 and used for being inserted into the tube bundle 72, the connector 2 is also in a strip shape extending axially, a flange 21 is arranged on the end, close to the adapter 1, of the connector 2 along the circumferential direction, and the end, far away from the adapter 1, of the connector 2 is in a conical structure so that the connector 2 can be conveniently inserted into the tube bundle 72. The joint 2 and the connecting pipe 1 can be an integral connecting piece, or can be two independent pieces which are connected in a welding mode. And the part of the joint 2 between the two ends is provided with annular grooves 22 along the circumferential direction, the annular grooves 22 are three and distributed at intervals along the axial direction, and the second sealing rings 5 are three and sleeved in the respective corresponding annular grooves 22 so as to be in sealing fit with the inner wall of the tube bundle 72 in the state that the joint 2 is inserted into the tube bundle 72. The first sealing ring 4 is provided with one and is sleeved on the joint 2 close to the flange 21, and the outer diameter of the first sealing ring 4 is larger than the inner diameter of the tube bundle 72 so as to abut between the end surface of the tube bundle 72 and the flange 21, thereby sealing the port of the tube bundle 72. Because the end of the tube bundle 72 is supported on the tube plate 71 of the air cooler 7, when the end surface of the tube bundle 72 is flush with the plate surface of the tube plate 71, the first sealing ring 4 can also directly abut between the plate surface of the tube plate 71 and the flange 21, and the sealing function can also be achieved.
The bolt 3 is provided with an external thread 31 matched with a threaded hole 730 on the pipe box 73 of the air cooler 7 (the threaded hole 730 is positioned at the screwed plug of the pipe box 73), a through hole 32 for the connecting pipe 1 to pass through is formed in the bolt 3 along the axial direction, the bolt 3 is sleeved on the connecting pipe 1, and the bolt 3 can axially move relative to the connecting pipe 1 and simultaneously can connect the connecting pipe 1 to the air cooler 7 by rotating the bolt 3. The sleeve 6 is sleeved on the adapter tube 1 and located between the bolt 3 and the flange 21, and the sleeve 6 can abut against the flange 21 when the bolt 3 is screwed down, so that the first sealing ring 4 is pressed on the end surface of the tube bundle 72, and the first sealing ring 4 is compressed and deformed. The size of the first sealing ring 4 can be selected according to the sizes of different tube bundles 72, test pressure and the like, and in order to ensure the sealing performance, the compression rate of the first sealing ring 4 is preferably 10% -30%.
In order to realize pressure test and leak detection, two sets of pressure test tools are adopted in the embodiment for maintenance, wherein the first set of pressure test tool 1a is arranged at the first end of the tube bundle 72, and the second set of pressure test tool 2a is arranged at the second end of the tube bundle 72. Offer the pressure testing passageway 10 that supplies fluid to pass through along the axial in takeover 1 and the joint 2 of first group pressure testing frock 1a, and be connected with the connector 11 that is used for connecting external pipeline on the other end of takeover 1, takeover 1 connects external pipeline through connector 11, be connected with manometer 8 and pressure testing pump 9 on the external pipeline, manometer 8 is located between pressure testing pump 9 and the connector 11, so, pressure testing fluid (like water) in the external pipeline can be sent to tube bank 72 in through takeover 1 and joint 2, and the fluid pressure in tube bank 72 can be surveyed through manometer 8. The inside of the connecting pipe 1 and the joint 2 of the second group of pressure test tools 2a is of a solid structure so as to block the second end 72 of the pipe bundle. The presence of a leak in the tube bundle 72 can be determined by reading the value measured by the pressure gauge 8. Please refer to fig. 4.
Certainly, in order to improve the accuracy of pressure test lateral leakage, the connecting pipe 1 and the joint 2 of the two sets of pressure test tools can be provided with the pressure test channel 10 (namely, the first set of pressure test tool 1a is adopted), and the external pipeline connected with each set of pressure test tool is provided with the pressure gauge 8 to obtain the pressure value before the fluid enters the tube bundle 72 and the pressure value after the fluid flows out of the tube bundle 72, and whether the tube bundle 72 has leakage is judged by the difference value of the two pressure values. Please refer to fig. 5.
The installation method of the pressure test tool in the embodiment comprises the following steps: the adapter 1, the adapter 2 and the sleeve 6 are inserted into the tube box 73 through the threaded hole 730, the adapter 2 is inserted into the tube bundle 72 to be tested for leakage, then the bolt 3 is rotated so that the bolt 3 is screwed onto the tube box 73, the bolt 3 moves toward the adapter 2 during screwing, and in the process, the bolt 3 pushes the sleeve 6 to approach the flange 21 on the adapter 2 and finally the sleeve 6 is pressed against the flange 21.
After the overhaul is finished, the bolt 3 is unscrewed to be separated from the threaded hole 730, and the whole pressure test tool can be taken out.
The bolt 3 has a short stroke in the process of screwing and unscrewing, so that the bolt is convenient to mount and dismount.
Claims (9)
1. The utility model provides a pressure testing frock for tube bank of air cooler, includes: take over (1), locate one of taking over (1) serve and be used for inserting joint (2) in tube bank (72), overlap and establish on taking over (1) in order to take over (1) the fastener of connecting on the air cooler and overlap and establish first sealing washer (4) on connecting (2), take over (1) and connect (2) in following the axial and offer pressure testing passageway (10) that supply fluid to pass through, its characterized in that:
a flange (21) is arranged at the end part of the joint (2) close to the connecting pipe (1), and the outer diameter of the first sealing ring (4) is larger than the inner diameter of the pipe bundle (72) and is arranged corresponding to the flange (21); the sealing device is characterized by further comprising a sleeve (6), the sleeve (6) is sleeved on the connecting pipe (1) and located between the fastening piece and the flange (21), the sleeve (6) can abut against the flange (21) under the action of the fastening piece, and then the first sealing ring (4) is pressed on the end face of the pipe bundle (72) to achieve sealing.
2. The pressure testing tool of claim 1, characterized in that: and the other end of the connecting pipe (1) is connected with a connector (11) for connecting an external pipeline.
3. The utility model provides a pressure testing frock for tube bank of air cooler, includes: take over (1), locate one of taking over (1) and serve joint (2) that are used for in inserting tube bank (72), the cover is established and is taken over (1) and establish first sealing washer (4) that connect on (2) with taking over the fastener of (1) connection on the air cooler and cover, its characterized in that:
the insides of the connecting pipe (1) and the joint (2) are of solid structures;
a flange (21) is arranged at the end part of the joint (2) close to the connecting pipe (1), and the outer diameter of the first sealing ring (4) is larger than the inner diameter of the pipe bundle (72) and is arranged corresponding to the flange (21); the sealing device is characterized by further comprising a sleeve (6), the sleeve (6) is sleeved on the connecting pipe (1) and located between the fastening piece and the flange (21), the sleeve (6) can abut against the flange (21) under the action of the fastening piece, and then the first sealing ring (4) is pressed on the end face of the pipe bundle (72) to achieve sealing.
4. The pressure test tool of any claim 1 to 3, which is characterized in that: the joint (2) and the connecting pipe (1) are an integral connecting piece; or the joint (2) and the connecting pipe (1) are two independent pieces and are connected in a welding mode.
5. The pressure test tool of any claim 1 to 3, which is characterized in that: the pipe bundle sealing device is characterized by further comprising a second sealing ring (5), wherein the second sealing ring (5) is sleeved on the joint (2) and is in sealing fit with the inner wall of the pipe bundle (72).
6. The pressure testing tool of claim 5, characterized in that: the second sealing rings (5) are at least two and are distributed at intervals.
7. The pressure testing tool of claim 5, characterized in that: an annular groove (22) is formed in the connector (2) along the circumferential direction, and the second sealing ring (5) is arranged in the annular groove (22).
8. The pressure test tool of any claim 1 to 3, which is characterized in that: the fastener is bolt (3), and this bolt (3) have with screw hole (730) the external screw thread (31) that cooperatees on the channel case (73) of air cooler, and offer along the axial in bolt (3) and supply takeover (1) through-hole (32).
9. The pressure test tool of any claim 1 to 3, which is characterized in that: the end part of the joint (2) far away from the connecting pipe (1) is of a conical structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022556245.6U CN213336683U (en) | 2020-11-06 | 2020-11-06 | Pressure test tool for tube bundle of air cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022556245.6U CN213336683U (en) | 2020-11-06 | 2020-11-06 | Pressure test tool for tube bundle of air cooler |
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| Publication Number | Publication Date |
|---|---|
| CN213336683U true CN213336683U (en) | 2021-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022556245.6U Active CN213336683U (en) | 2020-11-06 | 2020-11-06 | Pressure test tool for tube bundle of air cooler |
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| CN (1) | CN213336683U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117232754A (en) * | 2023-11-14 | 2023-12-15 | 江苏格兰环境科技有限公司 | Air cooler tube bank is examined pressure testing device separately |
-
2020
- 2020-11-06 CN CN202022556245.6U patent/CN213336683U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117232754A (en) * | 2023-11-14 | 2023-12-15 | 江苏格兰环境科技有限公司 | Air cooler tube bank is examined pressure testing device separately |
| CN117232754B (en) * | 2023-11-14 | 2024-01-30 | 江苏格兰环境科技有限公司 | Air cooler tube bank is examined pressure testing device separately |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 315207 Jiaochuan Street Refining Road, Zhenhai District, Ningbo City, Zhejiang Province Patentee after: Zhenhai Petrochemical Construction and Installation Engineering Co.,Ltd. Address before: 315207 Jiaochuan Street Refining Road, Zhenhai District, Ningbo City, Zhejiang Province Patentee before: ZHENHAI PETROCHEMICAL JIANAN ENGINEERING Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |