CN107882998B - Secondary sealing device with leakage detection - Google Patents
Secondary sealing device with leakage detection Download PDFInfo
- Publication number
- CN107882998B CN107882998B CN201711429101.0A CN201711429101A CN107882998B CN 107882998 B CN107882998 B CN 107882998B CN 201711429101 A CN201711429101 A CN 201711429101A CN 107882998 B CN107882998 B CN 107882998B
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- CN
- China
- Prior art keywords
- secondary sealing
- ring
- leakage
- movable ring
- driving part
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Links
- 238000007789 sealing Methods 0.000 title claims abstract description 80
- 238000001514 detection method Methods 0.000 title claims abstract description 16
- 230000003068 static effect Effects 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 7
- 238000005086 pumping Methods 0.000 abstract description 21
- 239000007788 liquid Substances 0.000 abstract description 12
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3436—Pressing means
- F16J15/3444—Pressing means by magnetic attraction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3492—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member with monitoring or measuring means associated with the seal
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to the field of pump liquid, in particular to a secondary sealing device with leakage detection, which comprises a secondary sealing device sleeved on a pump shaft, wherein the secondary sealing device comprises a movable ring, a stationary ring, a movable ring driving part, a leakage sensor and a leakage controller, the secondary sealing device and the pump shaft enclose a secondary sealing cavity, the pump shaft in the secondary sealing cavity is movably sleeved with the movable ring which can slide along the axial direction of the pump shaft, the secondary sealing cavity is internally provided with the leakage sensor, the movable ring driving part and the stationary ring, the end face of the stationary ring and the end face of the movable ring are oppositely arranged, a gap is arranged between the stationary ring and the movable ring, and the leakage controller is respectively and electrically connected with the leakage sensor and the movable ring driving part. According to the secondary sealing device with leakage detection, disclosed by the invention, the leakage sensor in the secondary sealing cavity, the stationary ring and the movable ring capable of performing secondary sealing operation can be used for achieving the purpose that after the sealing of the liquid pumping device is invalid, the device can also run under the temporary sealing of the secondary sealing device to obtain time for unplanned shutdown of the liquid pumping device.
Description
Technical Field
The invention relates to the field of pump liquid, in particular to a secondary sealing device 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
The invention aims to provide a secondary sealing device with leakage detection, which can realize that after the sealing of a liquid pumping device is failed, the secondary sealing device can also run under the temporary sealing of the secondary sealing device to fight for time for unplanned shutdown of the liquid pumping device through a leakage sensor in a secondary sealing cavity and a static ring and a dynamic ring which can carry out secondary sealing operation.
In order to solve the problems, the invention provides a secondary sealing device with leakage detection, which comprises a secondary sealing device sleeved on a pump shaft, wherein the secondary sealing device comprises a movable ring, a stationary ring, a movable ring driving part, a leakage sensor and a leakage controller;
the leakage controller processes leakage data generated by the leakage sensor and sends a secondary sealing signal to the moving ring driving part, and the moving ring driving part pushes the moving ring to move towards the static ring according to the secondary sealing signal, so that the end face of the moving ring is clung to the end face of the static ring.
Preferably, the stationary ring is provided at an end of the movable ring on the atmosphere side.
Preferably, the movable ring, the stationary ring and the movable ring driving part are all positioned at one end of the secondary seal cavity on the atmosphere side, and the leakage sensor is positioned at one end of the secondary seal cavity on the medium side.
Preferably, the leakage controller is provided on an outer side wall of the secondary sealing device.
Preferably, the moving ring driving part is an electromagnet, the moving ring driving part is arranged at one end of the stationary ring, and the moving ring is arranged at the other end of the stationary ring; when the movable ring driving part is electrified, the movable ring driving part attracts the movable ring to move towards the stationary ring along the pump shaft, and the end face of the movable ring is tightly attached to the end face of the stationary ring.
Preferably, the inner side wall of the secondary sealing cavity is provided with a groove along the perimeter direction of the secondary sealing cavity, the static ring and the dynamic ring driving part are arranged in a stacked mode, and the fixed ends of the static ring and the dynamic ring driving part are embedded into the groove.
Preferably, the secondary sealing device is further provided with a leakage signal output port, and the leakage controller is electrically connected with the leakage signal output port;
and the leakage controller processes leakage data generated by the leakage sensor and sends a leakage early warning signal to the leakage signal output port.
According to the secondary sealing device with leakage detection, after the leakage sensor detects medium leakage, the movable ring can be closely attached to the static ring under the pushing of the movable ring driving part so as to carry out secondary sealing operation, the situation that the pumping device needs to be subjected to non-planned shutdown treatment after the sealing failure of the pumping device is avoided, the pumping device can continue to operate under the secondary sealing of the secondary sealing device, and the economic loss of a user is greatly reduced.
Drawings
FIG. 1 is an overall schematic of a secondary seal with leak detection according to an embodiment of the present invention;
fig. 2 is an enlarged partial schematic view of a secondary seal with leak detection according to an embodiment of the present invention.
1, a pump shaft; 2. a secondary sealing device; 3. a moving ring; 4. a stationary ring; 5. a moving ring driving part; 6. a leak sensor; 7. a leakage controller; 8. a secondary seal chamber; 81. a groove; 9. a leak signal output port.
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 secondary sealing device with leakage detection is schematically shown by combining with fig. 1 and 2, and comprises a secondary sealing device 2 sleeved on a pump shaft 1, wherein the secondary sealing device 2 comprises a movable ring 3, a stationary ring 4, a movable ring driving part 5, a leakage sensor 6 and a leakage controller 7, the secondary sealing device 2 and the pump shaft 1 enclose a secondary sealing cavity 8, the pump shaft 1 positioned in the secondary sealing cavity 8 is movably sleeved with the movable ring 3 which can slide along the axial direction of the pump shaft 1, the secondary sealing cavity 8 is internally provided with the leakage sensor 6, the movable ring driving part 5 and the stationary ring 4, the end face of the stationary ring 4 and the end face of the movable ring 3 are oppositely arranged, a gap is arranged between the two, and the leakage controller 7 is respectively and electrically connected with the leakage sensor 6 and the movable ring driving part 5. When the leakage sensor 6 does not detect medium leakage, the movable ring 3 and the static ring 4 are separated from each other and are provided with a gap therebetween, so that under the condition that a liquid pumping device (not labeled) operates normally, the movable ring 3 and the static ring 4 do not participate in sealing, and friction loss does not occur. When the leakage sensor 6 detects medium leakage, the leakage controller 7 processes leakage data generated by the leakage sensor 6 and sends a secondary sealing signal to the moving ring driving part 5, and the moving ring driving part 5 pushes the moving ring 3 to move towards the static ring 4 according to the secondary sealing signal, so that the end face of the moving ring 3 is tightly attached to the end face of the static ring 4. At this time, friction occurs between the movable ring 3 and the stationary ring 4 and a secondary seal is formed, preventing further leakage of the medium. In this case, the seal of the pumping device itself has failed, but the pumping device can continue to operate by virtue of the secondary seal formed by the movable ring 3 and the stationary ring 4 of the secondary sealing device 2, so as to strive for time for unplanned shutdown of the pumping device, thereby greatly reducing economic loss of users.
In order to optimize the device, the stationary ring 4 is arranged at one end of the movable ring 3 on the atmosphere side, when the movable ring 3 is pushed by the movable ring driving part 5 to be clung to the stationary ring 4, the pressure of the medium can push the movable ring 3 at the same time, so that the movable ring 3 is clung to the stationary ring 4, the sealing effect of secondary sealing is further ensured, and the medium is prevented from leaking again. The movable ring 3, the stationary ring 4 and the movable ring driving part 5 are all positioned at one end of the secondary sealing cavity 8 on the atmosphere side, the leakage sensor 6 is positioned at one end of the secondary sealing cavity 8 on the medium side, when leakage occurs to the medium, the leakage sensor 6 can detect the leakage condition at the first time under the condition that the leakage sensor 6 can timely form secondary sealing through the movable ring 3 and the stationary ring 4 when the medium leaks into the secondary sealing cavity 8 from the medium side of the secondary sealing cavity 8.
In the present embodiment, the leakage controller 7 is provided on the outer side wall of the secondary seal 2, so that the secondary seal 2 can also be kept compact on the basis of satisfying its function. The moving ring driving part 5 is an electromagnet, the moving ring driving part 5 is arranged at one end of the stationary ring 4, and the moving ring 3 is arranged at the other end of the stationary ring 4. When the movable ring driving part 5 is electrified, the movable ring driving part 5 magnetically attracts the movable ring 3 to move towards the stationary ring 4 along the pump shaft, and finally the end surface of the movable ring 3 is clung to the end surface of the stationary ring 4, so that secondary sealing of the movable ring 3 and the stationary ring 4 is completed. The inside wall of secondary seal chamber 8 is equipped with recess 81 along the circumferencial direction of secondary seal chamber 8, and quiet ring 4 and moving ring drive portion 5 range upon range of setting, and the stiff end of both imbeds in recess 81, quiet ring 4 and moving ring drive portion 5 with this set firmly in secondary seal chamber 8.
In addition, the secondary sealing device 2 is also provided with a leakage signal output port 9, and the leakage controller 7 is electrically connected with the leakage signal output port 9; the leakage controller 7 processes leakage data generated by the leakage sensor 6 and sends a leakage warning signal to the leakage signal output port 9. The user can remotely monitor whether the medium leakage exists in the liquid pumping device through the leakage signal output port 9.
In summary, according to the secondary sealing device with leakage detection provided by the invention, after the leakage sensor detects medium leakage, the movable ring can be closely attached to the stationary ring under the pushing of the movable ring driving part so as to carry out secondary sealing operation, thus the situation that the pumping device needs to be subjected to unintended shutdown treatment after the sealing failure of the pumping device is avoided, the pumping device can continue to operate under the secondary sealing of the secondary sealing device, and the economic loss of a user is greatly reduced.
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 (4)
1. The secondary sealing device with the leakage detection function is characterized by comprising a secondary sealing device sleeved on a pump shaft, wherein the secondary sealing device comprises a movable ring, a stationary ring, a movable ring driving part, a leakage sensor and a leakage controller, a secondary sealing cavity is formed by surrounding the secondary sealing device and the pump shaft, the movable ring which is positioned in the secondary sealing cavity and slides along the axial direction of the pump shaft is movably sleeved on the pump shaft, the leakage sensor, the movable ring driving part and the stationary ring are arranged in the secondary sealing cavity, the end face of the stationary ring and the end face of the movable ring are oppositely arranged, a gap is arranged between the stationary ring and the movable ring, and the leakage controller is respectively and electrically connected with the leakage sensor and the movable ring driving part;
the leakage controller processes leakage data generated by the leakage sensor and sends a secondary sealing signal to the moving ring driving part, and the moving ring driving part pushes the moving ring to move towards the static ring according to the secondary sealing signal so that the end face of the moving ring is clung to the end face of the static ring;
the movable ring, the static ring and the movable ring driving part are all positioned at one end of the secondary sealing cavity at the atmosphere side, and the leakage sensor is positioned at one end of the secondary sealing cavity at the medium side;
the leakage controller is arranged on the outer side wall of the secondary sealing device;
the movable ring driving part is an electromagnet and is arranged at one end of the stationary ring, and the movable ring is arranged at the other end of the stationary ring; when the movable ring driving part is electrified, the movable ring driving part attracts the movable ring to move towards the stationary ring along the pump shaft, and the end face of the movable ring is tightly attached to the end face of the stationary ring.
2. The secondary seal with leak detection as defined in claim 1 wherein said stationary ring is disposed at an end of said moving ring on an atmospheric side.
3. The secondary sealing device with leakage detection according to claim 1, wherein the inner side wall of the secondary sealing cavity is provided with a groove along the circumferential direction of the secondary sealing cavity, the stationary ring and the movable ring driving part are arranged in a stacked manner, and the fixed ends of the stationary ring and the movable ring driving part are embedded into the groove.
4. The secondary sealing device with leakage detection according to claim 1, wherein a leakage signal output port is further arranged on the secondary sealing device, and the leakage controller is electrically connected to the leakage signal output port;
and the leakage controller processes leakage data generated by the leakage sensor and sends a leakage early warning signal to the leakage signal output port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711429101.0A CN107882998B (en) | 2017-12-23 | 2017-12-23 | Secondary sealing device with leakage detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711429101.0A CN107882998B (en) | 2017-12-23 | 2017-12-23 | Secondary sealing device with leakage detection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107882998A CN107882998A (en) | 2018-04-06 |
| CN107882998B true CN107882998B (en) | 2023-12-19 |
Family
ID=61771432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711429101.0A Active CN107882998B (en) | 2017-12-23 | 2017-12-23 | Secondary sealing device with leakage detection |
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| Country | Link |
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| CN (1) | CN107882998B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111365289B (en) * | 2020-03-04 | 2021-08-20 | 武汉泰康翔科技股份有限公司 | Intelligent mechanical sealing system and centrifugal pump |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5069278A (en) * | 1990-09-04 | 1991-12-03 | Paul Blair | Leakage control device |
| CN102278482A (en) * | 2011-06-23 | 2011-12-14 | 北京化工大学 | Mechanical seal device with stress self adaption |
| CN203374804U (en) * | 2013-06-04 | 2014-01-01 | 自贡兆强环保科技股份有限公司 | Transmission sealing device with detection function |
| CN203756587U (en) * | 2014-02-19 | 2014-08-06 | 浙江鲁溪密封件有限公司 | Stamping pump sealing device |
| CN205534236U (en) * | 2016-03-09 | 2016-08-31 | 宁波安铱矢密封有限公司 | Bi -polar face bellows collection dress formula seal |
| CN106017823A (en) * | 2015-08-28 | 2016-10-12 | 保集团有限公司 | Sealing detection device |
| CN107061749A (en) * | 2017-03-20 | 2017-08-18 | 北京化工大学 | Sealing body, shaft sealer and control method |
| CN107109957A (en) * | 2014-12-18 | 2017-08-29 | 伊格尔博格曼德国有限公司 | The axle sealing structure of fluid machinery and for the method for the axle for sealing fluid machinery |
| CN107258026A (en) * | 2015-01-05 | 2017-10-17 | 江森自控科技公司 | Lithium ionic cell unit with secondary seal |
| CN207740462U (en) * | 2017-12-23 | 2018-08-17 | 广州市白云泵业集团有限公司 | Has the secondary sealer of leak detection |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10364695B2 (en) * | 2013-04-12 | 2019-07-30 | United Technologies Corporation | Ring seal for blade outer air seal gas turbine engine rapid response clearance control system |
-
2017
- 2017-12-23 CN CN201711429101.0A patent/CN107882998B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5069278A (en) * | 1990-09-04 | 1991-12-03 | Paul Blair | Leakage control device |
| CN102278482A (en) * | 2011-06-23 | 2011-12-14 | 北京化工大学 | Mechanical seal device with stress self adaption |
| CN203374804U (en) * | 2013-06-04 | 2014-01-01 | 自贡兆强环保科技股份有限公司 | Transmission sealing device with detection function |
| CN203756587U (en) * | 2014-02-19 | 2014-08-06 | 浙江鲁溪密封件有限公司 | Stamping pump sealing device |
| CN107109957A (en) * | 2014-12-18 | 2017-08-29 | 伊格尔博格曼德国有限公司 | The axle sealing structure of fluid machinery and for the method for the axle for sealing fluid machinery |
| CN107258026A (en) * | 2015-01-05 | 2017-10-17 | 江森自控科技公司 | Lithium ionic cell unit with secondary seal |
| CN106017823A (en) * | 2015-08-28 | 2016-10-12 | 保集团有限公司 | Sealing detection device |
| CN205534236U (en) * | 2016-03-09 | 2016-08-31 | 宁波安铱矢密封有限公司 | Bi -polar face bellows collection dress formula seal |
| CN107061749A (en) * | 2017-03-20 | 2017-08-18 | 北京化工大学 | Sealing body, shaft sealer and control method |
| CN207740462U (en) * | 2017-12-23 | 2018-08-17 | 广州市白云泵业集团有限公司 | Has the secondary sealer of leak detection |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107882998A (en) | 2018-04-06 |
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