CN220956000U - Special device for pressure test and leakage detection of canned motor pump rotor - Google Patents
Special device for pressure test and leakage detection of canned motor pump rotor Download PDFInfo
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- CN220956000U CN220956000U CN202322627610.1U CN202322627610U CN220956000U CN 220956000 U CN220956000 U CN 220956000U CN 202322627610 U CN202322627610 U CN 202322627610U CN 220956000 U CN220956000 U CN 220956000U
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- detection
- canned motor
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- 238000001514 detection method Methods 0.000 title claims abstract description 47
- 238000012360 testing method Methods 0.000 title claims abstract description 17
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 9
- 229920001971 elastomer Polymers 0.000 claims description 8
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims 1
- 235000017491 Bambusa tulda Nutrition 0.000 claims 1
- 241001330002 Bambuseae Species 0.000 claims 1
- 241000196324 Embryophyta Species 0.000 claims 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims 1
- 239000011425 bamboo Substances 0.000 claims 1
- 238000003466 welding Methods 0.000 abstract description 30
- 230000007547 defect Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 235000013372 meat Nutrition 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a special device for detecting leakage of a shielding pump rotor through pressure test, relates to the technical field of shielding pumps, and mainly aims to detect leakage points of welding seams of a shielding sleeve of a shielding pump rotor. The main technical scheme of the utility model is as follows: the utility model provides a shield pump rotor pressure testing detects leakage isolated plant, the device includes: a cylinder and a detection unit; one end of the cylinder body is provided with an opening, the opening is detachably connected with the sealing cover and used for forming a closed space for placing a rotor of the shielding pump, and the cylinder body is provided with an air inlet valve, an air outlet valve and a pressure gauge; the detection portion comprises an air source pipe and a detection bottle, one end of the air source pipe is connected with an end plate threaded hole of a shielding sleeve of the shielding pump rotor in a threaded mode, and the other end of the air source pipe penetrates through the wall of the cylinder body and extends to below the liquid level of the detection bottle.
Description
Technical Field
The utility model relates to the technical field of canned motor pump, in particular to a special device for detecting leakage by pressure test of a canned motor pump rotor.
Background
In chemical and other industrial processes, the canned motor pump is very widely used, however, the most common cause of canned motor pump damage is mainly the damage of the canned motor cover. In the operation process, the damage fault of the shielding pump often appears as damage of the shielding sleeve, so that equipment is in-line maintained, however, the manufactured shielding sleeve cannot be subjected to RT/UT detection due to the fact that the welding seam is made of a thinner material (the thickness of the shielding sleeve material is about 0.4 mm), and PT detection effect cannot be guaranteed. If the welding line has a slight leakage point or a weak welding meat defect, the welding line is put on a production line, the working environment is operated at high temperature and high pressure for a long time, the leakage of the part with the defect of the welding line of the shielding sleeve is directly caused, equipment failure is caused, the equipment is required to be taken off line for maintenance, the service period of the equipment is directly shortened, if the equipment is frequently taken off line for maintenance, the normal production is also influenced, and meanwhile, the large maintenance cost is also generated. The problem that the defect of the welding seam with a slight leakage point cannot be detected is solved, normal operation and use of equipment cannot be ensured, waste of manpower and material resources can be caused for companies, and more importantly, production safety risks can be caused due to larger influence on production.
Disclosure of utility model
In view of the above, the utility model provides a special device for detecting leakage of a pressure test of a shielding pump rotor, which mainly aims to detect leakage points of a welding seam of a shielding sleeve of the shielding pump rotor.
In order to achieve the above purpose, the present utility model mainly provides the following technical solutions:
The utility model provides a special device for detecting leakage by testing pressure of a rotor of a canned motor pump, which comprises the following components: a cylinder and a detection unit;
One end of the cylinder body is provided with an opening, the opening is detachably connected with the sealing cover and used for forming a closed space for placing a rotor of the shielding pump, and the cylinder body is provided with an air inlet valve, an air outlet valve and a pressure gauge;
The detection portion comprises an air source pipe and a detection bottle, one end of the air source pipe is connected with an end plate threaded hole of a shielding sleeve of the shielding pump rotor in a threaded mode, and the other end of the air source pipe penetrates through the wall of the cylinder body and extends to below the liquid level of the detection bottle.
The aim and the technical problems of the utility model can be further realized by adopting the following technical measures.
Optionally, the steam coil is coiled on the circumference side of the cylinder, and the thermometer is installed on the side wall of the cylinder.
Optionally, the lifting device further comprises a lifting mechanism, wherein the cylinder body is a horizontal cylinder body, the lifting mechanism comprises a sliding rail and two lifting hooks, the sliding rail extends along the axial direction of the cylinder body, the sliding rail is fixedly arranged above the inside of the cylinder body, and the two lifting hooks are sequentially connected with the sliding rail in a sliding manner.
Optionally, the device further comprises an insulation layer, and the insulation layer is wrapped on the cylinder.
Optionally, the lower end of the cylinder wall of the cylinder body is fixedly connected with the base.
Optionally, the opening flange is connected to the sealing cover.
Optionally, the device further comprises a rubber tube, wherein a mounting hole is formed in the wall of the cylinder, the air source tube penetrates through the mounting hole, and the rubber tube is tensioned between the air source tube and the mounting hole.
By means of the technical scheme, the utility model has at least the following advantages:
After the shielding sleeve is manufactured and sleeved on the shielding pump rotor, the shielding pump rotor is placed in the cylinder body from the opening, one end of the air source pipe is connected to a threaded hole in the end plate of the shielding pump rotor through threads, the sealing cover is covered, and the other end of the air source pipe is inserted below the liquid level of the detection bottle.
After the operation is finished, the air inlet valve is connected with the compressed air pipe, the air outlet valve is closed, the air inlet valve is opened, the cylinder body is pressurized to a medium pressure value (the number of the observation pressure gauge) when the shielding pump operates, then the air inlet valve is closed, the state of the device is maintained for a certain period of time, whether bubbles appear in liquid in the detection bottle is observed, if the bubbles appear, the welding seam of the shielding sleeve is proved to have a leakage point, the compressed air in the cylinder body permeates into the shielding sleeve through the leakage point and flows into the detection bottle through the air source pipe, and the welding seam needs to be repaired; if no bubble is generated in the detection bottle, the fact that the welding line of the shielding sleeve has no leakage point is proved, after an operator takes out the rotor of the shielding pump from the cylinder body, rivets are used for riveting threaded holes of the end plate of the shielding sleeve, and then the rotor is installed in the shielding pump shell.
By using the device, the conventional welding seam detection means is replaced, and the defect that PT detection cannot accurately shield the welding seam leakage point of the sleeve is overcome.
Drawings
FIG. 1 is a schematic diagram of a device for detecting leakage of a canned motor pump rotor according to an embodiment of the present utility model;
fig. 2 is a schematic structural view of the lifting mechanism.
Reference numerals in the drawings of the specification include: barrel 1, sealed lid 2, admission valve 3, discharge valve 4, manometer 5, air supply pipe 6, detection bottle 7, shield cover 8, steam coil 9, thermometer 10, slide rail 11, lifting hook 12, gyro wheel 13, base 14, rubber tube 15, horizontal pole 16.
Detailed Description
In order to further describe the technical means and effects adopted for achieving the preset aim of the utility model, the following detailed description refers to the specific implementation, structure, characteristics and effects according to the application of the utility model with reference to the accompanying drawings and preferred embodiments. In the following description, different "an embodiment" or "an embodiment" do not necessarily refer to the same embodiment. Furthermore, the particular features, structures, or characteristics of one or more embodiments may be combined in any suitable manner.
The utility model is described in further detail below with reference to the drawings and examples.
As shown in fig. 1, an apparatus for detecting leakage of a canned motor pump rotor according to an embodiment of the present utility model includes: a cylinder 1 and a detection unit;
One end of the cylinder 1 is provided with an opening, the opening is detachably connected with the sealing cover 2 and is used for forming a closed space for placing a rotor of the shielding pump, and the cylinder 1 is provided with an air inlet valve 3, an air outlet valve 4 and a pressure gauge 5;
The detection portion comprises an air source pipe 6 and a detection bottle 7, one end of the air source pipe 6 is connected with an end plate threaded hole of a shielding sleeve 8 of the shielding pump rotor in a threaded mode, and the other end of the air source pipe penetrates through the wall of the cylinder body 1 and extends to below the liquid level of the detection bottle 7.
The special device for detecting leakage by testing the pressure of the rotor of the canned motor pump has the following working processes:
After the shielding sleeve 8 is manufactured and sleeved on the shielding pump rotor, the shielding pump rotor is placed in the cylinder body 1 from the opening, then one end of the air source pipe 6 is connected to a threaded hole in the end plate of the shielding sleeve 8 of the shielding pump rotor through threads, the sealing cover 2 is covered, and then the other end of the air source pipe 6 is inserted below the liquid level of the detection bottle 7.
After the operation is finished, the air inlet valve 3 is connected with a compressed air pipe, the air outlet valve 4 is closed, the air inlet valve 3 is opened, the cylinder 1 is pressurized to a medium pressure value (the number of the observation pressure gauge 5) when the shielding pump operates, then the air inlet valve 3 is closed, the state of the device is maintained for a certain period of time, whether bubbles appear in liquid in the detection bottle 7 is observed, if the bubbles appear, the welding seam of the shielding sleeve 8 is proved to have a leakage point, the compressed air in the cylinder 1 permeates into the shielding sleeve 8 through the leakage point and flows into the detection bottle 7 through the air source pipe 6, and the welding seam needs to be repaired; if no bubble is generated in the detection bottle 7, the fact that the welding line of the shielding sleeve 8 has no leakage point is proved, after an operator takes out the shielding pump rotor from the cylinder body 1, rivets are used for riveting threaded holes of end plates of the shielding sleeve 8, and then the rotor is mounted in the shielding pump shell.
In the technical scheme of the utility model, the device replaces the conventional welding seam detection means, and overcomes the defect that PT detection cannot accurately shield the welding seam leakage point of the sleeve 8.
Specifically, the detection bottle 7 is filled with water, and the air source pipe 6 extends below the liquid surface of the detection bottle 7.
Specifically, the special device for detecting the welding seam of the shielding sleeve 8 has the characteristics of strong operability (the common personnel can directly operate), high success rate, high working efficiency, visual detection effect, safety, reliability and the like. The device can be directly operated by only connecting a compressed air source without limiting the operation environment and the operation site, and the quality of the welding seam of the qualified shielding pump rotor sleeve is ensured.
Specifically, PT detection in a normal environment cannot simulate the detection effect of practical use conditions, and as the rotor has high temperature, high pressure and erosion of corrosive media in the practical use environment, the rotor sleeve is damaged, leaked and swelled due to the fact that external pressure of weld defects (local thinner welding meat, unfused welding meat and penetration) is too high. Affecting the service life of the device.
Specifically, this device has mainly improved the weld quality of detection, can simulate the withstand voltage experimental effect of rotor sleeve's welding seam under the actual condition simultaneously, detects the welding seam by PT under the natural environment before, improves to visual detection leak source, and operating personnel only need put into welding seam detection isolated plant with the rotor according to the requirement, according to actual operating mode pressure, pressurizes detection device, pressurize, observe can.
Specifically, the device also has the following advantages:
1. Whether welding repair of the welding line of the shielding sleeve 8 of the shielding pump rotor is qualified or not is directly detected, frequent offline maintenance of equipment in the use process due to the fact that welding quality cannot be detected and welding defects are avoided, and a great part of maintenance time is saved;
2. The qualification rate of welding seams of the rotor shielding sleeve 8 after pressure test can reach 100%, and the phenomenon that the service period of the rotor shielding sleeve 8 is shorter because the defects cannot be detected by PT detection is completely avoided;
3. the operation is simple, the hands can be easily put on after training for one to two times, and the whole process is simple to operate;
4. the pressure test and leakage detection work of the shielding sleeve 8 and the repair spare parts, which are wide in application and suitable for all similar structures;
5. The manufacturing cost is low, and the device does not need other auxiliary equipment.
As shown in fig. 1, in the specific embodiment, the steam coil 9 is coiled around the circumference of the cylinder 1, and the thermometer 10 is mounted on the side wall of the cylinder 1.
In this embodiment, specifically, the steam coil 9 is wound around the side wall of the cylinder 1, and transfers heat to the cylinder 1, so that the temperature of the cylinder 1 is raised, the internal environment temperature of the cylinder 1 approaches the medium temperature when the canned motor rotor is running, and an operator can observe the internal temperature of the cylinder 1 in real time through the thermometer 10.
As shown in fig. 1 and fig. 2, in a specific embodiment, the device further comprises a lifting mechanism, the cylinder 1 is a horizontal cylinder 1, the lifting mechanism comprises a sliding rail 11 and two lifting hooks 12, the sliding rail 11 extends along the axial direction of the cylinder 1, the sliding rail 11 is fixedly arranged above the inside of the cylinder 1, and the two lifting hooks 12 are sequentially connected with the sliding rail 11 in a sliding manner.
In this embodiment, specifically, the slide rail 11 is an H-shaped steel, the upper ends of the two hooks 12 are fixedly connected to the middle of the cross bar 16, the two ends of the cross bar 16 are bent upwards and respectively connected to the rollers 13 in a rotating manner, and the two rollers 13 lap-joint and roll on the upper surface of the wing plate of the H-shaped steel. An operator can hang two ends of a rotor shaft of the canned motor pump on the lifting hooks 12, and then push the rotor into the cylinder body 1, so that labor is saved.
In a specific embodiment, the heat-insulating sleeve further comprises a heat-insulating layer, and the heat-insulating layer is wrapped on the cylinder body 1.
In this embodiment, specifically, the heat-insulating layer is made of polyurethane, and the heat-insulating layer wraps the cylinder 1, so as to avoid heat dissipation in the cylinder 1, and maintain the medium temperature in the environment in the cylinder 1 to be continuously at the operating temperature of the canned motor pump rotor.
In the specific embodiment, as shown in fig. 1, the lower end of the wall of the cylinder 1 is fixedly connected to the base 14.
In this embodiment, specifically, the lower end of the wall of the barrel 1 is fixedly connected to the base 14, so as to avoid the barrel 1 rolling on the ground, and keep the shielding pump rotor in the barrel 1 stably placed.
In the specific embodiment, as shown in fig. 1, the opening flange is connected to the sealing cover 2.
In this embodiment, specifically, the opening of the cylinder 1 is connected to the sealing cover 2 through a flange, so as to avoid the leakage of high-pressure gas in the cylinder 1, and ensure the smooth detection of the leakage point of the shielding sleeve 8 of the shielding pump rotor.
As shown in fig. 1, in a specific embodiment, the device further comprises a rubber tube 15, the wall of the cylinder 1 is provided with a mounting hole, the air source tube 6 penetrates through the mounting hole, and the rubber tube 15 is tensioned between the air source tube 6 and the mounting hole.
In the present embodiment, specifically, the rubber tube 15 tightens the gap between the air source tube 6 and the mounting hole, and prevents the high-pressure air in the cylinder 1 from leaking through the gap.
The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.
Claims (7)
1. The utility model provides a shielding pump rotor pressure test detects leakage isolated plant which characterized in that includes:
The cylinder body is provided with an opening at one end, the opening is detachably connected with the sealing cover and used for forming a closed space for placing the rotor of the shielding pump, and the cylinder body is provided with an air inlet valve, an air outlet valve and a pressure gauge;
The detection part comprises an air source pipe and a detection bottle, one end of the air source pipe is connected with an end plate threaded hole of the shielding sleeve of the shielding pump rotor in a threaded mode, and the other end of the air source pipe penetrates through the wall of the cylinder body and extends to below the liquid level of the detection bottle.
2. The device for detecting leakage by testing pressure of a canned motor pump rotor according to claim 1, wherein,
Still include steam coil pipe and thermometer, steam coil pipe coil in the week side of barrel, the thermometer install in the lateral wall of barrel.
3. The device for detecting leakage by testing pressure of a canned motor pump rotor according to claim 1, wherein,
Still include handling mechanism, the barrel adopts horizontal barrel, handling mechanism includes slide rail and two lifting hooks, the slide rail is followed the axial extension of barrel, the slide rail fixed set up in the inside top of barrel, two the lifting hooks sliding connection in proper order in the slide rail.
4. A device special for pressure test and leakage detection of a canned motor pump rotor according to any one of claims 1 to 3, wherein,
The heat-insulating barrel also comprises a heat-insulating layer, and the heat-insulating layer is wrapped on the barrel.
5. The device for detecting leakage by testing pressure of a canned motor pump rotor according to claim 3, wherein,
The lower end of the barrel wall of the barrel body is fixedly connected to the base.
6. A device special for pressure test and leakage detection of a canned motor pump rotor according to any one of claims 1 to 3, wherein,
The opening flange is connected with the sealing cover.
7. A device special for pressure test and leakage detection of a canned motor pump rotor according to any one of claims 1 to 3, wherein,
Still include the rubber tube, the section of thick bamboo wall of barrel is equipped with the mounting hole, the air supply pipe runs through the mounting hole, the rubber tube tensioning in the air supply pipe with between the mounting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322627610.1U CN220956000U (en) | 2023-09-27 | 2023-09-27 | Special device for pressure test and leakage detection of canned motor pump rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322627610.1U CN220956000U (en) | 2023-09-27 | 2023-09-27 | Special device for pressure test and leakage detection of canned motor pump rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220956000U true CN220956000U (en) | 2024-05-14 |
Family
ID=91018133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322627610.1U Active CN220956000U (en) | 2023-09-27 | 2023-09-27 | Special device for pressure test and leakage detection of canned motor pump rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220956000U (en) |
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2023
- 2023-09-27 CN CN202322627610.1U patent/CN220956000U/en active Active
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