CN108167220B - Active sealing structure with leakage detection function - Google Patents
Active sealing structure with leakage detection function Download PDFInfo
- Publication number
- CN108167220B CN108167220B CN201711429516.8A CN201711429516A CN108167220B CN 108167220 B CN108167220 B CN 108167220B CN 201711429516 A CN201711429516 A CN 201711429516A CN 108167220 B CN108167220 B CN 108167220B
- Authority
- CN
- China
- Prior art keywords
- ring assembly
- sealing
- pump shaft
- movable
- static
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000007789 sealing Methods 0.000 title claims abstract description 94
- 238000001514 detection method Methods 0.000 title claims abstract description 35
- 230000003068 static effect Effects 0.000 claims abstract description 40
- 238000000034 method Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 238000005086 pumping Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000000246 remedial effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/12—Shaft sealings using sealing-rings
- F04D29/126—Shaft sealings using sealing-rings especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0077—Safety measures
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention relates to the field of water pump sealing, in particular to an active sealing structure with leakage detection, which comprises a secondary sealing device sleeved on a pump shaft, wherein the secondary sealing device and the pump shaft enclose a secondary sealing cavity arranged around the pump shaft, an electromagnetic driver, a leakage detection sensor electrically connected with the electromagnetic driver, a stationary ring component fixedly connected with the inner side wall of the secondary sealing cavity in a surrounding manner and a movable ring component movably sleeved on the pump shaft are arranged in the secondary sealing cavity, and the movable ring component can slide on the pump shaft along the axial direction of the pump shaft; a first gap is formed between the static ring assembly and the pump shaft, the sealing end face of the static ring assembly and the sealing end face of the dynamic ring assembly are arranged oppositely, and a second gap is formed between the sealing end face of the static ring assembly and the sealing end face of the dynamic ring assembly. The leakage detection sensor in the secondary sealing cavity can detect leakage of the sealing structure of the pump body, and secondary sealing is formed through the static ring assembly and the dynamic ring assembly, so that medium leakage is prevented, and time is strived for unintended shutdown of the pump body.
Description
Technical Field
The invention relates to the field of water pump sealing, in particular to an active sealing structure with leakage detection.
Background
The seals of conventional pumping devices wear over time, resulting in leakage of the medium within the pumping device. At this time, the liquid pumping device can cause property loss and potential safety hazard because of medium overflow, and the liquid pumping device must be shut down for maintenance, however, the unplanned shutdown of the liquid pumping device can bring greater economic loss to users, and a temporary remedy means is lacked in the process, so that the time is strived for the unplanned shutdown of the liquid pumping device.
Disclosure of Invention
In order to solve the problems, the invention aims to provide an active sealing structure with leakage detection, wherein a leakage detection sensor in a secondary sealing cavity can detect leakage of a sealing structure of a pump body, and secondary sealing is formed through a static ring assembly and a dynamic ring assembly, so that medium leakage is prevented, and time is strived for unplanned shutdown of the pump body.
Based on the above, the invention provides an active sealing structure with leakage detection, which comprises a secondary sealing device sleeved on a pump shaft, wherein the secondary sealing device and the pump shaft enclose a secondary sealing cavity arranged around the pump shaft, an electromagnetic driver, a leakage detection sensor electrically connected with the electromagnetic driver, a stationary ring component fixedly connected with the inner side wall of the secondary sealing cavity in a surrounding manner and a movable ring component movably sleeved on the pump shaft are arranged in the secondary sealing cavity, and the movable ring component can slide on the pump shaft along the axial direction of the pump shaft; a first gap is formed between the static ring assembly and the pump shaft, the sealing end face of the static ring assembly and the sealing end face of the movable ring assembly are arranged oppositely, and a second gap is formed between the sealing end face of the static ring assembly and the sealing end face of the movable ring assembly; the leakage detection sensor generates leakage data when detecting leakage and sends the leakage data to the electromagnetic driver, and the electromagnetic driver processes the leakage data and attracts or repels the movable ring assembly to force the movable ring assembly to move towards and cling to the static ring assembly.
Preferably, the moving ring assembly is located at the media end of the stationary ring assembly.
Preferably, the electromagnetic actuator is located at the atmospheric end of the stationary ring assembly.
Preferably, the leak detection sensor is located at the media end of the secondary seal.
Preferably, a pin is arranged on the outer side wall of the pump shaft, a limit groove is arranged on the inner side wall of the movable ring assembly, and the pin is embedded in the limit groove.
Preferably, the sealing end face of the stationary ring assembly is provided with a stationary sealing ring, the sealing end face of the movable ring assembly is provided with a movable sealing ring, the stationary sealing ring and the movable sealing ring are oppositely arranged, and the second gap is formed between the stationary sealing ring and the movable sealing ring.
Preferably, the secondary sealing device is provided with a control signal input port, and the control signal input port is electrically connected to the electromagnetic driver and the leakage detection sensor respectively.
The secondary sealing cavity with the active sealing structure for leakage detection is provided with the leakage detection sensor, and the leakage detection sensor can timely detect leakage of the sealing structure of the pump body; a first gap is formed between the static ring assembly and the pump shaft, so that friction loss between the static ring assembly and the pump shaft is avoided, a second gap is formed between the dynamic ring assembly and the static ring assembly, friction between the dynamic ring assembly and the static ring assembly is avoided when the pump body is not leaked, and maintenance is avoided; when the pump body is subjected to medium leakage, the movable ring assembly is tightly attached to the static ring assembly under the drive of the electromagnetic driver and rubs, so that secondary sealing is formed, further leakage of the medium is prevented, and time is striven for unintended shutdown of the pump body.
Drawings
FIG. 1 is a schematic view of the overall structure of an active seal structure with leak detection according to an embodiment of the present invention;
fig. 2 is a schematic partial structure of an active sealing structure with leak detection according to an embodiment of the present invention.
1, a pump shaft; 11. a pin; 2. a second sealing device; 21. a control signal input port; 3. a secondary seal chamber; 4. an electromagnetic driver; 5. a leak detection sensor; 6. a stationary ring assembly; 61. a sealing end surface of the stationary ring assembly; 62. a static seal ring; 7. a moving ring assembly; 71. sealing end surfaces of the movable ring assemblies; 72. a limit groove; 73. a dynamic seal ring; 8. a first void; 9. and a second void.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
The invention is combined with the drawings of fig. 1 and 2 to schematically show an active sealing structure with leakage detection, which comprises a secondary sealing device sleeved on a pump shaft 1, wherein the secondary sealing device and the pump shaft 1 enclose a secondary sealing cavity 3 arranged around the pump shaft 1, an electromagnetic driver 4, a leakage detection sensor 5 electrically connected with the electromagnetic driver 4, a stationary ring assembly 6 fixedly connected with the inner side wall of the secondary sealing cavity 3 in a surrounding manner and a movable ring assembly 7 movably sleeved on the pump shaft 1 are arranged in the secondary sealing cavity 3, and the movable ring assembly 7 can slide on the pump shaft 1 along the axial direction of the pump shaft 1; be equipped with first space 8 between quiet ring assembly 6 and pump shaft 1, when the rotatory relative secondary seal device of pump shaft 1, pump shaft 1 and quiet ring assembly 6 can not take place the friction, and the sealing end face 61 of quiet ring assembly and the sealing end face 71 of moving ring assembly set up relatively and be equipped with second space 9 between the two, and when the pump body did not take place the seepage, quiet ring assembly 6 and moving ring assembly 7 mutually separated, do not produce the friction, can not maintain like this, reduce operation cost. When the pump body is subjected to medium leakage, leakage data are generated after the leakage detection sensor 5 detects the leakage and sent to the electromagnetic driver 4, the electromagnetic driver 4 processes the leakage data and attracts or repels the moving ring assembly 7, the moving ring assembly 7 is forced to move towards the static ring assembly 6 and cling to the static ring assembly 6, and at the moment, the moving ring assembly 7 and the static ring assembly 6 are rubbed to form secondary sealing, so that the medium is prevented from continuing to leak. Even if the sealing structure of the pump body fails and leaks, the secondary sealing device can be made into temporary remedial measures, and the pump body is prevented from being stopped in an unintended manner, so that economic loss of users is avoided.
In order to optimize the structure, the movable ring assembly 7 is positioned at the medium end of the static ring assembly 6, when the sealing device forms secondary sealing, namely the movable ring assembly 7 is tightly attached to the static ring assembly 6 under the guiding action of the electromagnetic driver 4, a certain pressure (such as water pressure) is generated on the movable ring assembly 7 by the medium in the pump body, and the movable ring assembly 7 is tightly attached to the static ring assembly 6 under the pressure exerted by the medium on the movable ring assembly 7; if the moving ring assembly 7 is disposed at the atmospheric end of the stationary ring assembly 6, the moving ring assembly 7 is easy to be removed and replaced, but when the moving ring assembly 7 is tightly attached to the stationary ring assembly 6 under the guiding action of the electromagnetic driver 4, the electromagnetic driver 4 outputs a greater driving force to counteract the pressure generated by the medium on the moving ring assembly 7 due to the medium in the pump body generating a certain pressure on the moving ring assembly 7, so as to tightly attach the moving ring assembly 7 to the stationary ring assembly 6. The electromagnetic driver 4 is positioned at the atmosphere end of the stationary ring assembly 6, so that the arrangement has the advantages that when the medium leaks and the moving ring assembly 7 and the stationary ring assembly 6 form secondary sealing, the moving ring assembly 7 and the stationary ring assembly 6 isolate the medium from the electromagnetic driver 4, a medium protective layer is not required to be additionally arranged outside the electromagnetic driver 4, and the electromagnetic driver 4 is arranged at the atmosphere end of the stationary ring assembly 6, so that the electromagnetic driver 4 is convenient to maintain and replace. The leakage detection sensor 5 is positioned at the medium end of the secondary sealing cavity 3, so that the leakage detection sensor 5 detects the medium leaked out of the sealing structure of the pump body at the first time, and secondary sealing measures are taken in time. In addition, be equipped with pin 11 on the lateral wall of pump shaft 1, correspondingly, be equipped with spacing groove 72 on the inside wall of moving ring assembly 7, pin 11 inlays and locates in spacing groove 72, and the cooperation of pin 11 and spacing groove 72 makes moving ring assembly 7 can follow pump shaft 1 rotation steadily. The static seal ring 62 is arranged on the seal end face 61 of the static ring assembly, the movable seal ring 73 is arranged on the seal end face 71 of the movable ring assembly, the static seal ring 62 and the movable seal ring 73 are oppositely arranged and are provided with the second gap 9, the static seal ring 62 and the movable seal ring 73 are preferably made of rubber materials, better sealing performance is achieved, the static seal ring 62 is detachably connected to the seal end face 61 of the static ring assembly, and the movable seal ring 73 is detachably connected to the seal end face 71 of the movable ring assembly, so that the movable seal ring is convenient to detach and maintain. The secondary sealing device is provided with a control signal input port 21, the control signal input port 21 is respectively and electrically connected with the electromagnetic driver 4 and the leakage detection sensor 5, and monitoring personnel can remotely monitor the leakage condition and remotely control the operation of the electromagnetic driver 4 in a control room.
In summary, the secondary sealing cavity 3 with the active sealing structure for leakage detection is provided with the leakage detection sensor 5, and the leakage detection sensor 5 can timely detect leakage of the sealing structure of the pump body; a first gap 8 is formed between the static ring assembly 6 and the pump shaft 1, friction loss between the static ring assembly 6 and the pump shaft 1 is avoided, a second gap 9 is formed between the dynamic ring assembly 7 and the static ring assembly 6, friction between the dynamic ring assembly 7 and the static ring assembly 6 is avoided when the pump body does not leak, and maintenance is avoided; when the pump body is subjected to medium leakage, the movable ring assembly 7 is tightly attached to the static ring assembly 6 under the drive of the electromagnetic driver 4 and rubs, so that secondary sealing is formed, further leakage of the medium is prevented, and time is striven for unintended shutdown of the pump body.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present invention, and these modifications and substitutions should also be considered as being within the scope of the present invention.
Claims (3)
1. An active sealing structure with leakage detection is characterized by comprising a secondary sealing device sleeved on a pump shaft, wherein the secondary sealing device and the pump shaft enclose a secondary sealing cavity arranged around the pump shaft, an electromagnetic driver, a leakage detection sensor electrically connected with the electromagnetic driver, a stationary ring component fixedly connected with the inner side wall of the secondary sealing cavity in a surrounding manner and a movable ring component movably sleeved on the pump shaft are arranged in the secondary sealing cavity,
the movable ring assembly is positioned at the medium end of the static ring assembly; the moving ring assembly can slide on the pump shaft along the axial direction of the pump shaft; the outer side wall of the pump shaft is provided with a pin, the inner side wall of the movable ring assembly is provided with a limit groove, and the pin is embedded in the limit groove;
a first gap is formed between the static ring assembly and the pump shaft, the sealing end face of the static ring assembly and the sealing end face of the movable ring assembly are arranged oppositely, and a second gap is formed between the sealing end face of the static ring assembly and the sealing end face of the movable ring assembly;
the electromagnetic driver is positioned at the atmosphere end of the stationary ring assembly, the leakage detection sensor is positioned at the medium end of the secondary sealing cavity, leakage data are generated when the leakage detection sensor detects leakage and sent to the electromagnetic driver, and the electromagnetic driver processes the leakage data and attracts the movable ring assembly to force the movable ring assembly to move towards the stationary ring assembly and cling to the stationary ring assembly.
2. The active sealing structure with leakage detection according to claim 1, wherein a static sealing ring is arranged on the sealing end surface of the static ring assembly, a movable sealing ring is arranged on the sealing end surface of the movable ring assembly, and the static sealing ring and the movable sealing ring are oppositely arranged and the second gap is arranged between the static sealing ring and the movable sealing ring.
3. The active sealing structure with leakage detection according to claim 1, wherein the secondary sealing device is provided with a control signal input port, and the control signal input port is electrically connected to the electromagnetic driver and the leakage detection sensor respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711429516.8A CN108167220B (en) | 2017-12-23 | 2017-12-23 | Active sealing structure with leakage detection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711429516.8A CN108167220B (en) | 2017-12-23 | 2017-12-23 | Active sealing structure with leakage detection function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108167220A CN108167220A (en) | 2018-06-15 |
| CN108167220B true CN108167220B (en) | 2024-01-19 |
Family
ID=62521011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711429516.8A Active CN108167220B (en) | 2017-12-23 | 2017-12-23 | Active sealing structure with leakage detection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108167220B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114837955B (en) * | 2022-05-23 | 2023-12-05 | 山东省章丘鼓风机股份有限公司 | Slurry pump sealing leakage monitoring device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3820581A1 (en) * | 1988-06-16 | 1989-12-28 | Burgmann Dichtungswerk Feodor | MECHANICAL SEAL |
| AU8567791A (en) * | 1987-07-29 | 1991-12-05 | Continental Can Company Inc. | Collapsed body bead for improved sidewall integrity of metal can packages |
| GB0418413D0 (en) * | 2004-08-18 | 2004-09-22 | Aes Eng Ltd | A self contained flow induced system |
| CN102316259A (en) * | 2011-09-23 | 2012-01-11 | 深圳市君曼科技发展有限公司 | Lens module for monitoring camera |
| CN106523425A (en) * | 2016-12-13 | 2017-03-22 | 浙江聚英风机工业有限公司 | Magnetic seal centrifugal fan |
| CN107061346A (en) * | 2017-05-08 | 2017-08-18 | 东莞鸿凯工程设备有限公司 | Mechanical seal structure and circulating pump |
| CN207740232U (en) * | 2017-12-23 | 2018-08-17 | 广州市白云泵业集团有限公司 | Has the active sealing structure of leak detection |
-
2017
- 2017-12-23 CN CN201711429516.8A patent/CN108167220B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU8567791A (en) * | 1987-07-29 | 1991-12-05 | Continental Can Company Inc. | Collapsed body bead for improved sidewall integrity of metal can packages |
| DE3820581A1 (en) * | 1988-06-16 | 1989-12-28 | Burgmann Dichtungswerk Feodor | MECHANICAL SEAL |
| GB0418413D0 (en) * | 2004-08-18 | 2004-09-22 | Aes Eng Ltd | A self contained flow induced system |
| CN102316259A (en) * | 2011-09-23 | 2012-01-11 | 深圳市君曼科技发展有限公司 | Lens module for monitoring camera |
| CN106523425A (en) * | 2016-12-13 | 2017-03-22 | 浙江聚英风机工业有限公司 | Magnetic seal centrifugal fan |
| CN107061346A (en) * | 2017-05-08 | 2017-08-18 | 东莞鸿凯工程设备有限公司 | Mechanical seal structure and circulating pump |
| CN207740232U (en) * | 2017-12-23 | 2018-08-17 | 广州市白云泵业集团有限公司 | Has the active sealing structure of leak detection |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108167220A (en) | 2018-06-15 |
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