CN210803649U - Cable distribution box with partial discharge online monitoring function - Google Patents
Cable distribution box with partial discharge online monitoring function Download PDFInfo
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- CN210803649U CN210803649U CN201921627877.8U CN201921627877U CN210803649U CN 210803649 U CN210803649 U CN 210803649U CN 201921627877 U CN201921627877 U CN 201921627877U CN 210803649 U CN210803649 U CN 210803649U
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Abstract
The application discloses a cable distribution box with a partial discharge online monitoring function, which comprises a cable distribution box cabinet body, a first ultrahigh frequency sensor, a second ultrahigh frequency sensor, a first ultrasonic sensor, a second ultrasonic sensor and a partial discharge detector host; the cable distribution box cabinet body comprises an upper box and a lower box; the partial discharge detector comprises a main machine of a partial discharge detector, a first ultrahigh frequency sensor and a first ultrasonic sensor which are respectively fixed on the side wall of an upper box; the second ultrahigh frequency sensor and the second ultrasonic sensor are respectively fixed on the side wall of the lower box. When the electric equipment is discharged, the electric equipment can generate discharge sound and radiate high-frequency electromagnetic wave signals to the outside, the ultrahigh-frequency sensor is used for receiving partial discharge electromagnetic wave signals, the ultrasonic sensor is used for receiving partial discharge ultrasonic wave signals, the electric and sound signals are transmitted to the main machine of the partial discharge detector, the analysis of the amplitude and time difference change of the electric and sound signals is completed, and the real-time monitoring of the partial discharge quantity of the electric equipment in the cable distribution box is realized.
Description
Technical Field
The application relates to the technical field of distribution electrical monitoring, in particular to a cable distribution box with a partial discharge online monitoring function.
Background
The existing cable distribution box has the problems of non-uniform standard, large product quality difference, poor construction quality and the like, so that the insulation breakdown fault is often caused in the operation process of the distribution box, and potential safety hazards are brought to the safe operation of equipment. The traditional cable distribution box has no monitoring device for the running state of the electrical equipment in the distribution box, and faults can be discovered after the electrical equipment is damaged. Based on the practical problems of the conventional cable distribution box, how to find the abnormal condition of the cable distribution box in the operating state in advance is a problem which needs to be solved urgently at present.
SUMMERY OF THE UTILITY MODEL
The application aims to provide a cable distribution box with a partial discharge online monitoring function, and aims to solve the problem that abnormal conditions of the cable distribution box in an operating state cannot be found in advance.
According to an embodiment of the application, a cable distribution box with a partial discharge online monitoring function is provided, and comprises a cable distribution box cabinet body, a first ultrahigh frequency sensor, a second ultrahigh frequency sensor, a first ultrasonic sensor, a second ultrasonic sensor and a partial discharge detector host;
the cable distribution box cabinet body comprises an upper box and a lower box connected with the upper box;
the partial discharge detector main unit, the first ultrahigh frequency sensor and the first ultrasonic sensor are respectively fixed on the side wall of the upper box;
the second ultrahigh frequency sensor and the second ultrasonic sensor are respectively fixed on the side wall of the lower box;
the first ultrahigh frequency sensor, the second ultrahigh frequency sensor, the first ultrasonic sensor and the second ultrasonic sensor are respectively connected with the host of the partial discharge detector.
Furthermore, the lateral wall of going up the case is equipped with first trompil, and the epoxy board covers first trompil, the epoxy board passes through the fix with screw on the lateral wall of going up the case, a superfrequency sensor is fixed through from locking-type buckle plastics nylon ribbon on the epoxy board.
Further, the lateral wall of nowel is equipped with the second trompil, and the epoxy board covers the second trompil, the epoxy board passes through the fix with screw on the nowel lateral wall, the second superfrequency sensor is fixed through from locking-type buckle plastics nylon ribbon on the epoxy board.
Further, an ultrasonic special coupling agent is smeared between the first ultrasonic sensor and the side wall of the upper box.
Further, an ultrasonic special coupling agent is smeared between the second ultrasonic sensor and the side wall of the lower box.
Further, the cable distribution box with the partial discharge on-line monitoring function further comprises an ultrahigh frequency sensor shield, the ultrahigh frequency sensor shield is arranged on the outer sides of the first ultrahigh frequency sensor and the second ultrahigh frequency sensor, and the ultrahigh frequency sensor shield is welded on the side wall of the cabinet body of the cable distribution box.
Further, the cable distribution box with the function of monitoring partial discharge on line further comprises an ultrasonic sensor shield, the ultrasonic sensor shield is arranged on the outer sides of the first ultrasonic sensor and the second ultrasonic sensor, and the ultrasonic sensor shield is welded on the side wall of the cabinet body of the cable distribution box.
Furthermore, a third opening is formed in the side wall of the upper box, and the partial discharge detector host is fixed to the third opening.
Furthermore, the cable distribution box with the partial discharge on-line monitoring function further comprises a stainless steel cover plate, the stainless steel cover plate is arranged on the outer side of the partial discharge detector main machine, and the stainless steel cover plate is connected with the side wall of the upper box.
Furthermore, the cable distribution box with the function of monitoring partial discharge on line further comprises a copper lock, and the stainless steel cover plate is connected with the side wall of the upper box through the copper lock.
According to the technical scheme, the cable distribution box with the function of partial discharge online monitoring comprises a cable distribution box cabinet body, a first ultrahigh frequency sensor, a second ultrahigh frequency sensor, a first ultrasonic sensor, a second ultrasonic sensor and a partial discharge detector host; the cable distribution box cabinet body comprises an upper box and a lower box connected with the upper box; the partial discharge detector main unit, the first ultrahigh frequency sensor and the first ultrasonic sensor are respectively fixed on the side wall of the upper box; the second ultrahigh frequency sensor and the second ultrasonic sensor are respectively fixed on the side wall of the lower box; the first ultrahigh frequency sensor, the second ultrahigh frequency sensor, the first ultrasonic sensor and the second ultrasonic sensor are respectively connected with the host of the partial discharge detector. When the electric equipment is discharged, the electric equipment can generate discharge sound and radiate high-frequency electromagnetic wave signals to the outside, the ultrahigh-frequency sensor is used for receiving partial discharge electromagnetic wave signals, the ultrasonic sensor is used for receiving partial discharge ultrasonic wave signals, the electric and sound signals are transmitted to the main machine of the partial discharge detector, the analysis of the amplitude and time difference change of the electric and sound signals is completed, and the real-time monitoring of the partial discharge quantity of the electric equipment in the cable distribution box is realized.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a front view of a cable distribution box with a partial discharge online monitoring function according to an embodiment of the present application;
FIG. 2 is a rear view of a cable distribution box with partial discharge on-line monitoring according to an embodiment of the present disclosure;
FIG. 3 is a side view of a cable distribution box with partial discharge on-line monitoring according to an embodiment of the present application;
FIG. 4 is a wiring diagram illustrating a cable distribution box with partial discharge online monitoring according to an embodiment of the present application;
FIG. 5 is a diagram illustrating a sensor arrangement in detail according to an embodiment of the present application;
fig. 6 is a detailed diagram illustrating a host of a partial discharge detector according to an embodiment of the present disclosure.
Illustration of the drawings:
the cable distribution box comprises a cable distribution box cabinet body 1, a first ultrahigh frequency sensor 2, a second ultrahigh frequency sensor 3, a first ultrasonic sensor 4, a second ultrasonic sensor 5, a local discharge detector host 6, an epoxy resin plate 7, a screw 8, a self-locking buckle plastic nylon cable tie 10, an ultrahigh frequency sensor shield 11, an upper box 12, a lower box 13, an ultrasonic sensor shield 14, a stainless steel cover plate 15, a copper lock 16, an underframe and a cable inlet 17.
Detailed Description
Referring to fig. 1 to 4, the embodiment of the present application provides a cable distribution box with a partial discharge online monitoring function, including a cable distribution box cabinet 1, a first ultrahigh frequency sensor 2, a second ultrahigh frequency sensor 3, a first ultrasonic sensor 4, a second ultrasonic sensor 5 and a partial discharge detector host 6;
the cable distribution box cabinet body 1 comprises an upper box 11 and a lower box 12 connected with the upper box 11;
the partial discharge detector main unit 6, the first ultrahigh frequency sensor 2 and the first ultrasonic sensor 4 are respectively fixed on the side wall of the upper box 11;
the second ultrahigh frequency sensor 3 and the second ultrasonic sensor 5 are respectively fixed on the side wall of the lower box 12;
the first ultrahigh frequency sensor 2, the second ultrahigh frequency sensor 3, the first ultrasonic sensor 4 and the second ultrasonic sensor 5 are respectively connected with the partial discharge detector host 6.
The bottom of the lower box 12 is provided with a cable inlet 17, and the lower box 12 is connected with the bottom frame 16.
When the electric equipment is discharged, the electric equipment can generate discharge sound and radiate high-frequency electromagnetic wave signals to the outside, the first ultrahigh-frequency sensor 2 and the second ultrahigh-frequency sensor 3 are used for respectively receiving partial discharge electromagnetic wave signals of the upper box 11 and the lower box 12, the first ultrasonic sensor 4 and the second ultrasonic sensor 5 are used for receiving partial discharge ultrasonic wave signals of the upper box 11 and the lower box 12, the electric signals and the sound signals are transmitted to a main machine of a partial discharge detector, the amplitude values and time difference changes of the electric signals and the sound signals are analyzed, and the partial discharge quantity of the electric equipment in the cable tapping box is monitored in real time.
In the operation process of the cable distribution box, a patrol worker can check the partial discharge real-time signal in the distribution box at any time. A test channel is changed by operating a local discharge detection instrument host 6, a first ultrahigh frequency sensor 2, a second ultrahigh frequency sensor 3, a first ultrasonic sensor 4 and a second ultrasonic sensor 5 are respectively selected, ultrasonic signals and ultrahigh frequency signals of corresponding positions of a cable distribution box are checked, and then the running state of internal electrical equipment is judged according to the local discharge intensity in the cable distribution box and whether corresponding measures need to be taken for processing or not.
The embodiment of the application can solve the problem that the traditional cable tapping box does not have a monitoring device for the running state of the electrical equipment in the tapping box, and the fault can be found after the electrical equipment is damaged, and has the advantage of monitoring the local discharge capacity of the electrical equipment in the cable tapping box in real time.
Further, referring to fig. 5, a first opening is formed in a side wall of the upper box 11, an epoxy resin plate 7 covers the first opening, the epoxy resin plate 7 is fixed to the side wall of the upper box 11 through a screw 8, and the first uhf sensor 2 is fixed to the epoxy resin plate 7 through a self-locking type buckle plastic nylon cable tie 9.
Specifically, a first opening with the size of 140 × 70mm is reserved on the back surface of the upper box 11, the first opening is covered by an epoxy resin plate 7 with the thickness of 4mm and is fixed by 4 screws 8, and then the square first ultrahigh frequency sensor 2 with the size of 160 × 90mm is placed on the epoxy resin plate 7 and is tightly attached and fixed by a self-locking buckle plastic nylon ribbon 9.
Among these, the purpose of using the epoxy board 7 is two: 1) when a partial discharge signal exists in the tapping box, if no hole is formed or other metal materials are used, the electromagnetic signal of the partial discharge cannot be diffused to the outside, namely the ultrahigh frequency sensor cannot detect the electromagnetic signal of the partial discharge; 2) after the epoxy resin material is used, the phenomenon that electromagnetic signals cannot be transmitted to the sensor can be avoided, and meanwhile, the insulating and isolating effects can be achieved.
The ultrahigh frequency sensor is relatively large in size and weight and heavy, and the self-locking type buckling plastic nylon cable tie 9 can fix the ultrahigh frequency sensor and prevent the ultrahigh frequency sensor from falling; meanwhile, the ultrahigh frequency sensor is more closely contacted with the cable distribution box cabinet body 1.
Further, the lateral wall of nowel 12 is equipped with the second trompil, and epoxy board 7 covers the second trompil, epoxy board 7 is fixed in through screw 8 on the 12 lateral walls of nowel, second superfrequency sensor 3 is fixed through from locking-type buckle plastics nylon ribbon 9 on epoxy board 7.
And a second opening with the size of 140 × 70mm is reserved on the side surface of the lower box 12, the second opening is covered by an epoxy resin plate 7 with the thickness of 4mm and is fixed by 4 screws 8, and then the square second ultrahigh frequency sensor 3 with the size of 160 × 90mm is placed on the epoxy resin plate 7 and is tightly attached and fixed by a self-locking buckle plastic nylon cable tie 9.
The structure of the second uhf sensor 3 fixed to the side wall of the lower case 12 is the same as the structure of the first uhf sensor 2 fixed to the side wall of the upper case 11.
Further, an ultrasonic special coupling agent is smeared between the first ultrasonic sensor 4 and the side wall of the upper box 11.
Further, an ultrasonic special coupling agent is coated between the second ultrasonic sensor 5 and the side wall of the lower box 12.
An ultrasonic sensor is placed on the back surface of an upper box of the cable distribution box, and a special ultrasonic coupling agent is uniformly smeared between a probe of the ultrasonic sensor and a cabinet body and is fixed by using a sealant. The special couplant for ultrasound is coated, so that effective contact between the ultrasonic sensor and the cabinet body of the tapping box is increased, and ultrasonic partial discharge signals are transmitted to the sensor more effectively.
Further, the cable distribution box with the partial discharge online monitoring function further comprises an ultrahigh frequency sensor shield 10, the ultrahigh frequency sensor shield 10 is arranged on the outer sides of the first ultrahigh frequency sensor 2 and the second ultrahigh frequency sensor 3, and the ultrahigh frequency sensor shield 10 is welded on the side wall of the cable distribution box cabinet body 1.
Specifically, the first uhf sensor 2 and the second uhf sensor 3 are protected by welding and covering the sensor shield 10 with 170 × 100 × 120mm uhf, and external electromagnetic interference signals can be shielded. The ultrahigh frequency sensor shield 10 is made of stainless steel.
Further, the cable distribution box with the function of monitoring partial discharge on line further comprises an ultrasonic sensor shield 13, the ultrasonic sensor shield 13 is arranged on the outer sides of the first ultrasonic sensor 4 and the second ultrasonic sensor 5, and the ultrasonic sensor shield 13 is welded on the side wall of the cabinet body 1 of the cable distribution box.
Specifically, the first ultrasonic sensor 4 and the second ultrasonic sensor 5 are protected by welding and covering with an ultrasonic sensor shield 13 having a diameter of 50 mm. The ultrasonic sensor cover 13 is made of stainless steel.
Furthermore, a third opening is formed in the side wall of the upper box 11, and the partial discharge detector main unit 6 is fixed to the third opening.
Specifically, a third opening of 200mm x 130mm is reserved on the front surface of the upper box of the cable distribution box, and the partial discharge detection instrument host 6 is placed at the third opening.
Further, referring to fig. 6, the cable distribution box with the partial discharge online monitoring function further includes a stainless steel cover plate 14, the stainless steel cover plate 14 is disposed on the outer side of the partial discharge detector main unit 6, and the stainless steel cover plate 14 is connected to the side wall of the upper box 11. Specifically, the outside of the partial discharge detector main unit 6 is covered with a stainless steel cover plate 14 of 220 × 150 × 1.5 mm.
Further, the cable distribution box with the partial discharge online monitoring function further comprises a copper lock 15, and the stainless steel cover plate 14 is connected with the side wall of the upper box 11 through the copper lock 15. The copper lock 15 is used for protecting the main machine 6 of the partial discharge detector.
According to the technical scheme, the cable distribution box with the function of monitoring partial discharge on line comprises a cable distribution box cabinet body 1, a first ultrahigh frequency sensor 2, a second ultrahigh frequency sensor 3, a first ultrasonic sensor 4, a second ultrasonic sensor 5 and a partial discharge detector host 6; the cable distribution box cabinet body 1 comprises an upper box 11 and a lower box 12 connected with the upper box 11; the partial discharge detector main unit 6, the first ultrahigh frequency sensor 2 and the first ultrasonic sensor 4 are respectively fixed on the side wall of the upper box 11; the second ultrahigh frequency sensor 3 and the second ultrasonic sensor 5 are respectively fixed on the side wall of the lower box 12; the first ultrahigh frequency sensor 2, the second ultrahigh frequency sensor 3, the first ultrasonic sensor 4 and the second ultrasonic sensor 5 are respectively connected with the partial discharge detector host 6. When the electric equipment is discharged, the electric equipment can generate discharge sound and radiate high-frequency electromagnetic wave signals to the outside, the ultrahigh-frequency sensor is used for receiving partial discharge electromagnetic wave signals, the ultrasonic sensor is used for receiving partial discharge ultrasonic wave signals, the electric and sound signals are transmitted to the partial discharge detector host 6, the analysis of the amplitude and time difference change of the electric and sound signals is completed, and the real-time monitoring of the partial discharge quantity of the electric equipment in the cable distribution box is realized.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.
Claims (10)
1. A cable distribution box with a partial discharge online monitoring function is characterized by comprising a cable distribution box cabinet body (1), a first ultrahigh frequency sensor (2), a second ultrahigh frequency sensor (3), a first ultrasonic sensor (4), a second ultrasonic sensor (5) and a partial discharge detector host (6);
the cable distribution box cabinet body (1) comprises an upper box (11) and a lower box (12) connected with the upper box (11);
the partial discharge detector host (6), the first ultrahigh frequency sensor (2) and the first ultrasonic sensor (4) are respectively fixed on the side wall of the upper box (11);
the second ultrahigh frequency sensor (3) and the second ultrasonic sensor (5) are respectively fixed on the side wall of the lower box (12);
the first ultrahigh frequency sensor (2), the second ultrahigh frequency sensor (3), the first ultrasonic sensor (4) and the second ultrasonic sensor (5) are respectively connected with the partial discharge detector host (6).
2. The cable distribution box with the function of online partial discharge monitoring according to claim 1, wherein a first opening is formed in a side wall of the upper box (11), an epoxy resin plate (7) covers the first opening, the epoxy resin plate (7) is fixed on the side wall of the upper box (11) through a screw (8), and the first ultrahigh frequency sensor (2) is fixed on the epoxy resin plate (7) through a self-locking buckle plastic nylon cable tie (9).
3. The cable distribution box with the function of online partial discharge monitoring according to claim 1, wherein a second opening is formed in a side wall of the lower box (12), an epoxy resin plate (7) covers the second opening, the epoxy resin plate (7) is fixed on the side wall of the lower box (12) through a screw (8), and the second ultrahigh frequency sensor (3) is fixed on the epoxy resin plate (7) through a self-locking type buckling plastic nylon cable tie (9).
4. The cable distribution box with partial discharge online monitoring function according to claim 1, characterized in that an ultrasonic special coupling agent is coated between the first ultrasonic sensor (4) and the side wall of the upper box (11).
5. The cable distribution box with partial discharge online monitoring function according to claim 1, characterized in that an ultrasonic special coupling agent is coated between the second ultrasonic sensor (5) and the side wall of the lower box (12).
6. The cable distribution box with the function of online partial discharge monitoring according to claim 1, further comprising a uhf sensor shield (10), wherein the uhf sensor shield (10) is disposed outside the first uhf sensor (2) and the second uhf sensor (3), and the uhf sensor shield (10) is welded to a sidewall of the cable distribution box body (1).
7. The cable distribution box with the function of online partial discharge monitoring according to claim 1, further comprising an ultrasonic sensor shield (13), wherein the ultrasonic sensor shield (13) is disposed outside the first ultrasonic sensor (4) and the second ultrasonic sensor (5), and the ultrasonic sensor shield (13) is welded on a side wall of the cable distribution box cabinet body (1).
8. The cable distribution box with the function of online partial discharge monitoring according to claim 1, wherein a third opening is formed in a side wall of the upper box (11), and the partial discharge detector main unit (6) is fixed at the third opening.
9. The cable distribution box with the function of online partial discharge monitoring according to claim 1, further comprising a stainless steel cover plate (14), wherein the stainless steel cover plate (14) is arranged on the outer side of the main partial discharge detector (6), and the stainless steel cover plate (14) is connected with the side wall of the upper box (11).
10. The cable distribution box with the function of online partial discharge monitoring according to claim 9, further comprising a copper lock (15), wherein the stainless steel cover plate (14) is connected with the side wall of the upper box (11) through the copper lock (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921627877.8U CN210803649U (en) | 2019-09-27 | 2019-09-27 | Cable distribution box with partial discharge online monitoring function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921627877.8U CN210803649U (en) | 2019-09-27 | 2019-09-27 | Cable distribution box with partial discharge online monitoring function |
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| Publication Number | Publication Date |
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| CN210803649U true CN210803649U (en) | 2020-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921627877.8U Active CN210803649U (en) | 2019-09-27 | 2019-09-27 | Cable distribution box with partial discharge online monitoring function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116229378A (en) * | 2023-05-09 | 2023-06-06 | 盛锋电力科技有限公司 | Abnormal monitoring and early warning method for SMC cable tapping box |
-
2019
- 2019-09-27 CN CN201921627877.8U patent/CN210803649U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116229378A (en) * | 2023-05-09 | 2023-06-06 | 盛锋电力科技有限公司 | Abnormal monitoring and early warning method for SMC cable tapping box |
| CN116229378B (en) * | 2023-05-09 | 2023-08-25 | 盛锋电力科技有限公司 | Abnormal monitoring and early warning method for SMC cable tapping box |
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