CN220206983U - Frequent detection device of circuit breaker hydraulic mechanism pressure - Google Patents
Frequent detection device of circuit breaker hydraulic mechanism pressure Download PDFInfo
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- CN220206983U CN220206983U CN202321762477.4U CN202321762477U CN220206983U CN 220206983 U CN220206983 U CN 220206983U CN 202321762477 U CN202321762477 U CN 202321762477U CN 220206983 U CN220206983 U CN 220206983U
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- hydraulic mechanism
- tube
- circuit breaker
- detection
- detection tube
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- 238000001514 detection method Methods 0.000 title claims abstract description 54
- 238000003780 insertion Methods 0.000 claims abstract description 30
- 230000037431 insertion Effects 0.000 claims abstract description 30
- 238000007789 sealing Methods 0.000 claims abstract description 23
- 238000006073 displacement reaction Methods 0.000 claims abstract description 20
- 238000003825 pressing Methods 0.000 claims abstract description 14
- 239000003921 oil Substances 0.000 description 58
- 238000004146 energy storage Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 6
- 238000005457 optimization Methods 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Abstract
The utility model relates to a detection device for frequent pressing of a hydraulic mechanism of a circuit breaker, which comprises a transparent detection tube, wherein the lower end of the detection tube is communicated with an insertion tube which is matched with an oil return hole of the hydraulic mechanism, the outer diameter of the insertion tube is smaller than that of the detection tube, a sealing ring groove is formed in the outer ring of the insertion tube, a sealing ring is arranged in the sealing ring groove, an oil path channel is formed by an inner hole of the detection tube and an inner hole of the insertion tube, scales are marked on the detection tube, a floating ball is arranged in the oil path channel, the upper end of the floating ball is connected with a core rod, a displacement sensor for detecting the upper position and the lower position of the core rod is arranged in the oil path channel, and a display screen is fixedly connected on the detection tube.
Description
Technical Field
The utility model relates to the technical field of circuit breakers, in particular to a device for detecting frequent pressing of a hydraulic mechanism of a circuit breaker.
Background
The hydraulic mechanism is widely applied to the electric power system due to the characteristics of high output power, good load matching characteristic, high reliability and the like of the hydraulic mechanism. However, the circuit breaker also has the problem of frequent pressing, the hydraulic mechanism of the circuit breaker is in a high hydraulic state during operation,
therefore, the oil seepage phenomenon of the high-pressure pipeline is easy to occur, the hydraulic mechanism of the circuit breaker is frequently pressurized, the circuit breaker cannot be normally opened or closed, and the stability of the power system is affected. The frequent pressurizing of the hydraulic mechanism is mainly caused by poor sealing of each sealing part of the mechanism, and because the sealing parts are more and the structure is complex, the specific parts are difficult to find, the time is long, and the requirement of power supply reliability cannot be met.
Since the oil leakage portion is present inside the hydraulic mechanism and is sealed in the operating state, it is difficult to find a specific leakage portion. At present, a step-by-step maintenance method is adopted for fault removal, namely, after equipment power failure and mechanism pressure relief are removed, all functional modules of the mechanism are comprehensively decomposed and inspected. The working method has the advantages of large workload, high cost, undefined working key, long working time and influence on the reliable operation of equipment.
The Chinese patent document with the authority of bulletin number of CN 110783135B discloses a circuit breaker hydraulic mechanism overhauling oil tank and a frequent searching method for hydraulic mechanism pressurizing of the oil tank, the circuit breaker hydraulic mechanism overhauling oil tank comprises an oil tank body and a connecting flange, wherein the oil tank body is made of transparent materials, the upper part of the oil tank body is provided with an opening, the flange is positioned around the top of the oil tank body, and the flange and the oil tank body are of an integrated structure. The frequent searching method for the hydraulic mechanism of the overhauling oil tank is utilized, so that each element in the hydraulic mechanism can be visually inspected under the state of pressure, and defects can be directly searched. However, the method is only suitable for the situation that the leakage amount of the hydraulic mechanism is very large, the state network stipulates that the oil pump is started 20 times in 24 hours under the condition that the circuit breaker is not operated, namely the pressing is frequent, the leakage amount is about 100ml, the leakage amount is about 0.001ml in 1 second, the leakage amount is very small, and the leakage amount cannot be observed by naked eyes.
The hydraulic mechanism consists of various modules, each module is provided with an oil return hole leading to an oil tank, when the hydraulic mechanism is frequently pressurized, the sealing component of a certain module is abnormal, so that high-pressure oil is led to permeate into the low-pressure oil tank through the oil return holes by the abnormal sealing component, and the purpose of detecting the frequent pressurized of the hydraulic mechanism can be achieved by utilizing the hydraulic oil quantity flowing out of the oil return holes.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides a device for detecting frequent pressing of a hydraulic mechanism of a circuit breaker.
The utility model provides a detection device for frequent pressing of a hydraulic mechanism of a circuit breaker, which comprises a transparent detection tube, wherein the lower end of the detection tube is communicated with an insertion tube which is matched with an oil return hole of the hydraulic mechanism, the outer diameter of the insertion tube is smaller than that of the detection tube, a sealing ring groove is formed in the outer ring of the insertion tube, a sealing ring is arranged in the sealing ring groove, an oil path channel is formed by an inner hole of the detection tube and an inner hole of the insertion tube, and scales are marked on the detection tube.
The insertion pipe in the scheme is inserted into the oil return holes corresponding to the modules of the hydraulic mechanism, and the end part of the detection pipe is propped against the end surface of the oil return hole; and observing the leakage quantity of each detection tube through scales, and determining that a certain module of the hydraulic mechanism is a leakage module when the leakage quantity/detection time of the module is larger than the allowable leakage rate of each module.
As optimization, the outer ring of the insertion tube is provided with two sealing ring grooves. Two seal grooves are formed in the scheme, so that the sealing effect is enhanced through the two seal rings.
Preferably, the length of the insertion tube is 25mm-40mm. In the scheme, the length of the insertion tube is 25mm-40mm, the insertion amount is proper, and leakage is prevented.
As optimization, a floating ball is arranged in the oil path, the upper end of the floating ball is connected with a core bar, a displacement sensor for detecting the upper and lower positions of the core bar is arranged in the oil path, and a display screen is fixedly connected on the detection tube. The floater in this scheme can float on the oil level and follow the oil level and go up and down, and displacement sensor detects the displacement of core bar, and the display screen can show time, leakage quantity.
As optimization, the display screen is fixedly connected to the upper end of the detection tube, and the side wall of the upper end of the detection tube is provided with a vent hole. The vent holes in this embodiment are used to vent gases.
As optimization, the displacement sensor is fixedly connected to the inner hole of the detection tube, the core rod passes through the displacement sensor, and the upper end of the core rod is fixedly connected with the core cap. The core cap arranged in the scheme can prevent the core rod from falling off downwards.
As optimization, the floating ball is in threaded connection with the core rod. The floating ball and the core rod in the scheme are in threaded connection, so that the floating ball is convenient to detach.
The beneficial effects of the utility model are as follows: according to the detection device for frequent pressing of the hydraulic mechanism of the circuit breaker, disclosed by the utility model, the leakage quantity of each module of the hydraulic mechanism is directly observed and recorded by utilizing the oil return hole of each module of the hydraulic mechanism leading to the oil tank, so that the leakage module is rapidly detected, and the maintenance efficiency is improved.
Drawings
FIG. 1 is a schematic view of the present utility model in use;
FIG. 2 is a schematic diagram of the internal structure of the present utility model;
FIG. 3 is a schematic view of the structure of the floating ball and the core rod according to the present utility model;
FIG. 4 is a schematic view of an oil return hole of a hydraulic mechanism of a circuit breaker to be tested;
FIG. 5 is a schematic view showing the external structure of the detection tube according to the present utility model;
the figure shows:
1. the device comprises a first energy storage cylinder module, 2, a first energy storage cylinder module oil return hole, 3, a control module, 4, a control module oil return hole, 5, a second energy storage cylinder module, 6, a second energy storage cylinder module oil return hole, 7, a pressurizing module, 8, a pressurizing module oil return hole, 9, a third energy storage cylinder module, 10, a third energy storage cylinder module oil return hole, 11, a monitoring module, 12, a monitoring module oil return hole, 13, a detection tube, 14, an insertion tube, 15, a sealing ring, 16, a floating ball, 17, a displacement sensor, 18, a core bar, 19, a vent hole, 20, a display screen, 21 and a core cap.
Detailed Description
In order to clearly illustrate the technical characteristics of the scheme, the scheme is explained below through a specific embodiment.
As shown in fig. 1-5, the detection device for frequent pressing of the hydraulic mechanism of the circuit breaker comprises a transparent detection tube 13, wherein the lower end of the detection tube 13 is communicated with an insertion tube 14 which is matched with an oil return hole of the hydraulic mechanism, the detection tube 13 and the insertion tube 14 are integrally formed into a glass tube, the outer diameter of the insertion tube 14 is smaller than that of the detection tube 13, the inner diameter of the insertion tube 14 is equal to that of the detection tube 13, an oil path channel is formed by an inner hole of the detection tube 13 and an inner hole of the insertion tube 14, and the oil path channel is vertically communicated, so that leaked oil enters the oil path channel after the insertion tube 14 is inserted into the oil return holes corresponding to each module of the hydraulic mechanism, and scales are marked on the detection tube 13 for observing the height of the oil inside.
The length of the insertion tube 14 is 25mm-40mm, and the length of the detection tube 13 is 60-mm-120 mm. The outer ring of the insertion tube 14 is provided with a sealing ring groove, a sealing ring 15 is arranged in the sealing ring groove, and in the embodiment, the outer ring of the insertion tube 14 is provided with two sealing ring grooves, so that the sealing effect is enhanced through the two sealing rings.
Because errors exist in visual observation and the field space does not necessarily meet the observation conditions of personnel, a floating ball 16 is arranged in the oil path, the diameter of the floating ball 16 is slightly smaller than the inner diameter of the oil path, and the upper end of the floating ball 16 is connected with a core rod 18.
The oil path channel is internally provided with a displacement sensor 17 for detecting the upper and lower positions of the core rod 18, the displacement sensor 17 is fixedly connected to the inner hole of the detection tube 13, the core rod 18 passes through the displacement sensor 17, and the upper end of the core rod 18 is fixedly connected with a core cap 21. The core cap 21 is larger than the through hole of the core bar 18 passing through the displacement sensor 17, so that the core cap 21 can prevent the core bar 18 from falling down when the entire detecting device is lifted up.
The float ball 16 is screw-coupled with the core bar 18, so that the core bar 18 is passed through the displacement sensor 17 from above to below during installation, the lower end is exposed from the lower end of the insertion tube 14, and then the float ball 16 is screw-mounted.
The display screen 20 is fixedly connected to the detection tube 13. The display 20 may display time and data detected by the displacement sensor 17 and be powered by a battery, which may be integrated inside the display 20.
The display screen 20 is fixedly connected to the upper end of the detection tube 13, and a vent hole 19 is formed in the side wall of the upper end of the detection tube 13 and is used for exhausting when oil rises.
The application method of the utility model comprises the following steps:
step one: the hydraulic mechanism oil tank cover is removed, the state diagram of the hydraulic mechanism after the oil tank cover is removed is shown in fig. 4, the first energy storage cylinder module 1 corresponds to the first energy storage cylinder module oil return hole 2, the control module 3 corresponds to the control module oil return hole 4, the second energy storage cylinder module 5 corresponds to the second energy storage cylinder module oil return hole 6, the charging module 7 corresponds to the charging module oil return hole 8, the third energy storage cylinder module 9 corresponds to the third energy storage cylinder module oil return hole 10, and the monitoring module 11 corresponds to the monitoring module oil return hole 12.
Step two: as shown in fig. 1, the detection device is inserted into oil return holes corresponding to the modules of the hydraulic mechanism; the floating ball 16 can float on the oil surface to rise and fall along with the oil surface, the displacement sensor 17 detects the displacement of the core bar 18, the upper part is provided with a display screen 20 which can display time and leakage quantity, and the air vent 19 is arranged to exhaust air; the leakage amount displayed on the display 20 is calculated based on the displacement of the stem 18 detected by the displacement sensor 17.
Step three: the display screen 20 is set to start timing.
Step four: after a period of time, the leakage amount of each detection tube 13 is observed through the scale and the display screen 20, and when the leakage amount/detection time of a certain module of the hydraulic mechanism is larger than the allowable leakage rate of each module, the module is determined to be a leakage module.
Step five: and the detection tube 13 is pulled out, the oil tank cover is restored, the pressure of the hydraulic mechanism is reduced to zero, and the module is replaced, so that maintenance is completed.
Of course, the above description is not limited to the above examples, and the technical features of the present utility model that are not described may be implemented by or by using the prior art, which is not described herein again; the above examples and drawings are only for illustrating the technical scheme of the present utility model and not for limiting the same, and the present utility model has been described in detail with reference to the preferred embodiments, and it should be understood by those skilled in the art that changes, modifications, additions or substitutions made by those skilled in the art without departing from the spirit of the present utility model and the scope of the appended claims.
Claims (7)
1. A detection device for frequently pressing a hydraulic mechanism of a circuit breaker is characterized in that: the oil-way detection device comprises a transparent detection tube (13), wherein an insertion tube (14) matched with an oil return hole of a hydraulic mechanism is communicated with the lower end of the detection tube (13), the outer diameter of the insertion tube (14) is smaller than that of the detection tube (13), a sealing ring groove is formed in the outer ring of the insertion tube (14), a sealing ring (15) is arranged in the sealing ring groove, an oil-way channel is formed by an inner hole of the detection tube (13) and an inner hole of the insertion tube (14), and scales are marked on the detection tube (13).
2. The device for detecting frequent pressing of a hydraulic mechanism of a circuit breaker according to claim 1, wherein: two seal ring grooves are formed in the outer ring of the insertion tube (14).
3. The device for detecting frequent pressing of a hydraulic mechanism of a circuit breaker according to claim 1, wherein: the length of the insertion tube (14) is 25mm-40mm.
4. A circuit breaker hydraulic mechanism frequent-impact detection device according to any one of claims 1-3, characterized in that: the oil way channel is internally provided with a floating ball (16), the upper end of the floating ball (16) is connected with a core bar (18), the oil way channel is internally provided with a displacement sensor (17) for detecting the upper and lower positions of the core bar (18), and the detection tube (13) is fixedly connected with a display screen (20).
5. The device for detecting frequent pressing of a hydraulic mechanism of a circuit breaker according to claim 4, wherein: the display screen (20) is fixedly connected to the upper end of the detection tube (13), and a vent hole (19) is formed in the side wall of the upper end of the detection tube (13).
6. The device for detecting frequent pressing of a hydraulic mechanism of a circuit breaker according to claim 4, wherein: the displacement sensor (17) is fixedly connected to an inner hole of the detection tube (13), the core rod (18) penetrates through the displacement sensor (17), and a core cap (21) is fixedly connected to the upper end of the core rod (18).
7. The device for detecting frequent pressing of a hydraulic mechanism of a circuit breaker according to claim 6, wherein: the floating ball (16) is in threaded connection with the core rod (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321762477.4U CN220206983U (en) | 2023-07-06 | 2023-07-06 | Frequent detection device of circuit breaker hydraulic mechanism pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321762477.4U CN220206983U (en) | 2023-07-06 | 2023-07-06 | Frequent detection device of circuit breaker hydraulic mechanism pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220206983U true CN220206983U (en) | 2023-12-19 |
Family
ID=89141181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321762477.4U Active CN220206983U (en) | 2023-07-06 | 2023-07-06 | Frequent detection device of circuit breaker hydraulic mechanism pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220206983U (en) |
-
2023
- 2023-07-06 CN CN202321762477.4U patent/CN220206983U/en active Active
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