High-frequency flexible sensor for cable partial discharge detection

Abstract

The utility model discloses a high-frequency flexible sensor for cable partial discharge detection, which belongs to the technical field of discharge detection and comprises two groups of discharge sensing mechanisms which are parallel left and right, a fixed box is fixedly connected to the rear end of the right side of the discharge sensing mechanism on the left side, and a fixed box is fixedly connected to the rear end of the right side of the discharge sensing mechanism on the right side. The front end of the left side of the discharge induction mechanism on the right side is fixedly connected with a fixed plate; the left side and the right side of the fixed box are provided with the quick connection mechanisms, the upper end of the discharge induction mechanism is provided with the discharge sensing mechanism, and the bottom of the discharge induction mechanism is provided with the grounding supporting mechanism. The discharge sensing mechanism is arranged, signals received by the discharge sensing mechanism can be conveniently sensed and used, the position of the discharge sensing mechanism is prevented from moving through the grounding supporting mechanism, and therefore the accuracy of detection data is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of discharge detection technology, and in particular to a high-frequency flexible sensor for detecting partial discharge in cables. Background Technology

[0002] Partial discharge is an early sign of cable insulation aging and can lead to serious failures. High-frequency flexible sensors, due to their high sensitivity and flexibility, have become an effective tool for detecting partial discharge.

[0003] Existing high-frequency sensors for partial discharge detection in cables have limited sensitivity in measuring high-frequency pulse signals and are easily affected by external disturbances, thus affecting the detection performance of the device. Therefore, it is necessary to improve the detection performance of the device by developing a new type of high-frequency flexible sensor for partial discharge detection in cables to solve the above-mentioned technical problems. Utility Model Content

[0004] Purpose of the invention: The purpose of this utility model is to provide a high-frequency flexible sensor for partial discharge detection in cables, so as to solve the problem that existing high-frequency sensors for partial discharge detection in cables have limited sensitivity in measuring high-frequency pulse signals and are easily affected by external disturbances, thus affecting the detection effect of the device.

[0005] Technical solution: A high-frequency flexible sensor for partial discharge detection in cables, comprising: a discharge sensing mechanism, wherein the discharge sensing mechanism is configured in two sets and the discharge sensing mechanisms are parallel to each other, a fixing box is fixedly connected to the rear right side of the discharge sensing mechanism on the left side, and a fixing plate is fixedly connected to the front left side of the discharge sensing mechanism on the right side.

[0006] The quick-connect mechanism is installed on the left and right sides of the fixed box, the discharge sensing mechanism is installed at the upper end of the discharge sensing mechanism, and the grounding support mechanism is installed at the bottom of the discharge sensing mechanism.

[0007] As a further description of the above technical solution: the discharge sensing mechanism includes an encapsulation layer, a flexible substrate is bonded to the bottom of the encapsulation layer, a conductive layer is bonded to the upper end of the flexible substrate, an electrode layer is disposed at the upper end of the conductive layer, a shielding layer is bonded to the upper end of the electrode layer, and the upper end of the shielding layer is bonded to the encapsulation layer.

[0008] As a further description of the above technical solution: the quick-connect mechanism includes mounting blocks installed on the left and right sides of the fixed box, a pull rod is movably inserted in the middle of the mounting block, a first trapezoidal block is fixedly connected to the pull rod on the side closer to each other, a spring is sleeved on the outer surface of the pull rod, connecting plates are fixedly connected to the left and right sides of the front end of the fixed plate, and a second trapezoidal block is fixedly connected to the connecting plate on the side farther away from each other.

[0009] As a further description of the above technical solution: the fixing box and the mounting block are provided with a movable groove that is adapted to the first trapezoidal block, and the first trapezoidal block and the second trapezoidal block fit together.

[0010] As a further description of the above technical solution: the discharge sensing mechanism includes a discharge sensor body installed on the discharge sensing mechanism, two sets of anti-interference air layers are provided on the left and right sides of the discharge sensor body, a waterproof plug is installed at the front end of the discharge sensor body, and a signal line is inserted in the middle of the waterproof plug.

[0011] As a further description of the above technical solution: the grounding support mechanism includes a mounting plate installed at the bottom of the discharge induction mechanism, support plates are fixedly connected to the left and right sides of the bottom of the mounting plate, anti-slip pads are sewn onto the bottom of the support plates, and several fixed columns are equidistantly installed in the middle of the bottom of the mounting plate, with suction cups installed at the bottom of the fixed columns.

[0012] As a further description of the above technical solution: the discharge induction mechanism is configured as a threaded type.

[0013] As a further description of the above technical solution: the front left and right sides of the fixing plate are fixedly connected with the locking blocks, the fixing box is provided with the locking slots adapted to the locking blocks, and the fixing plate and the fixing box form a locking connection mechanism.

[0014] Beneficial effects: 1. By setting up a discharge induction mechanism, and through the encapsulation layer and flexible substrate, it is easy to protect the device. By setting up a conductive layer and electrode layer, it is easy to use for discharge induction of cables. By setting up a shielding layer, it is easy to reduce external electromagnetic interference and improve the signal-to-noise ratio. By setting the discharge induction mechanism as a thread type, and through the variable pitch of the helical shape, the combination of dipoles forms a directional characteristic facing the cable, which greatly improves the sensitivity of high-frequency pulse signal measurement of the cable, while reducing the influence of external disturbances.

[0015] 2. By incorporating a discharge sensing mechanism, the discharge sensor body and anti-interference air layer enhance the anti-interference capability of the discharge sensor body, reducing its error. A grounding support mechanism, utilizing a support plate, supports the main body, while an anti-slip pad is adhered to the bottom of the support plate. This increases the contact area between the support plate and the contact surface, strengthening anti-slip performance and ensuring stability during pressure measurement. The inclusion of a fixing column and suction cups allows for adsorption of the contact surface, ensuring the device's positioning during use and preventing displacement of the discharge sensing mechanism, thus guaranteeing accurate detection data. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the overall structure of a high-frequency flexible sensor for partial discharge detection in cables proposed in this utility model.

[0017] Figure 2 This is a schematic diagram of the discharge induction mechanism in this utility model;

[0018] Figure 3 This is a schematic diagram of the quick-connect mechanism in this utility model;

[0019] Figure 4 This is a schematic diagram of the discharge sensing mechanism in this utility model;

[0020] Figure 5 This is a schematic diagram of the grounding support mechanism in this utility model.

[0021] Name 1. Discharge sensing mechanism; 101. Encapsulation layer; 102. Flexible substrate; 103. Conductive layer; 104. Electrode layer; 105. Shielding layer; 2. Fixing box; 3. Fixing plate; 4. Quick-connect mechanism; 401. Mounting block; 402. Pull rod; 403. First trapezoidal block; 404. Spring; 405. Connecting plate; 406. Second trapezoidal block; 5. Discharge sensing mechanism; 501. Discharge sensor body; 502. Anti-interference air layer; 503. Waterproof plug; 504. Signal line; 6. Grounding support mechanism; 601. Mounting plate; 602. Support plate; 603. Anti-slip pad; 604. Fixing column; 605. Suction cup. Detailed Implementation

[0022] To make the technical solution of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] Example 1

[0024] refer to Figure 1 This utility model discloses a high-frequency flexible sensor for partial discharge detection of cables, which can solve the problem that the sensitivity of high-frequency pulse signal measurement of cables is limited and easily affected by external disturbances during the use of existing high-frequency sensors for partial discharge detection of cables, thus affecting the detection effect of the device. It includes a discharge sensing mechanism 1, which is configured as two sets and is parallel to each other. The right rear end of the left discharge sensing mechanism 1 is fixedly connected to a fixing box 2, and the left front end of the right discharge sensing mechanism 1 is fixedly connected to a fixing plate 3.

[0025] Quick-connect mechanism 4 is installed on the left and right sides of the fixed box 2. Discharge sensing mechanism 5 is installed on the upper end of discharge sensing mechanism 1. Grounding support mechanism 6 is installed on the bottom of discharge sensing mechanism 1.

[0026] Working principle: The discharge induction mechanism 1 is easy to attach to the cable for partial discharge detection. The fixing box 2 and fixing plate 3 facilitate the installation of the quick-connect mechanism 4. The quick-connect mechanism 4 facilitates the quick connection of two sets of discharge induction mechanisms 1. The discharge sensing mechanism 5 facilitates the sensing of the signals received by the discharge induction mechanism 1. The grounding support mechanism 6 can realize the positioning of this device during use and prevent the discharge induction mechanism 1 from moving, thereby ensuring the accuracy of the detection data.

[0027] Example 2

[0028] Reference Figure 2 , Figure 3 , Figure 4 ,and Figure 5 This embodiment addresses the problem that existing high-frequency sensors for partial discharge detection in cables have limited sensitivity in measuring high-frequency pulse signals and are easily affected by external disturbances, thus impacting the detection performance of the device. The proposed high-frequency flexible sensor for partial discharge detection in cables further includes a discharge sensing mechanism 1 comprising an encapsulation layer 101, a flexible substrate 102 bonded to the bottom of the encapsulation layer 101, a conductive layer 103 bonded to the upper end of the flexible substrate 102, an electrode layer 104 disposed at the upper end of the conductive layer 103, and a shielding layer 105 bonded to the upper end of the electrode layer 104, with the upper end of the shielding layer 105 bonded to the encapsulation layer 101. A quick-connect mechanism 4 includes mounting blocks 401 installed on the left and right sides of the fixing box 2, a pull rod 402 movably inserted in the middle of the mounting blocks 401, a first trapezoidal block 403 fixedly connected to the pull rod 402 on the side closer to each other, and a spring 404 sleeved on the outer surface of the pull rod 402. Connecting plates 405 are fixedly connected to the left and right sides of the front end of the fixing plate 3, and a second connecting plate 405 is fixedly connected to the side of the connecting plates 405 away from each other. The trapezoidal block 406, the fixing box 2, and the mounting block 401 are provided with movable grooves that are adapted to the first trapezoidal block 403. The first trapezoidal block 403 and the second trapezoidal block 406 fit together. The discharge sensing mechanism 5 includes a discharge sensor body 501 mounted on the discharge sensing mechanism 1. Two sets of anti-interference air layers 502 are provided on the left and right sides of the discharge sensor body 501. A waterproof plug 503 is installed at the front end of the discharge sensor body 501. A signal line 504 is inserted in the middle of the waterproof plug 503. The grounding support mechanism 6 includes a mounting box 406. A mounting plate 601 is installed at the bottom of the discharge sensing mechanism 1. Support plates 602 are fixedly connected to the left and right sides of the bottom of the mounting plate 601. Anti-slip pads 603 are sewn onto the bottom of the support plates 602. Several fixing posts 604 are installed at equal intervals in the middle of the bottom of the mounting plate 601. Suction cups 605 are installed at the bottom of the fixing posts 604. The discharge sensing mechanism 1 is set as a threaded type. The front left and right sides of the fixing plate 3 are fixedly connected to the locking blocks. The fixing box 2 has a locking groove that matches the locking blocks. The fixing plate 3 and the fixing box 2 form a locking connection mechanism.

[0029] Working principle: When using this device, after the discharge induction mechanism 1 is sleeved onto the cable, the fixing box 2 and the fixing plate 3 are connected. The first trapezoidal block 403, the connecting plate 405, and the second trapezoidal block 406 facilitate quick and easy connection and locking of the two sets of induction mechanisms 1. When disassembly is required, pull the lever 402 to separate the first trapezoidal block 403 and the second trapezoidal block 406, allowing for quick and easy separation of the two sets of discharge induction mechanisms 1. A spring 404 facilitates the disassembly of the first trapezoidal block 403 after use. To ensure proper locking and operation of the device, a reset is performed. After connection, the support plate 602 supports the main body, while the anti-slip pad 603 is adhered to the bottom of the support plate 602. This increases the contact area between the support plate 602 and the contact surface, enhancing anti-slip performance and ensuring stability during pressure measurement. The fixed post 604 and suction cup 605 act as suction points, ensuring proper positioning of the device and preventing discharge induction mechanisms. 1. Positional movement ensures accurate detection data. After installation and positioning, the device is protected by the encapsulation layer 101 and flexible substrate 102. The conductive layer 103 and electrode layer 104 facilitate discharge induction of the cable. The shielding layer 105 reduces external electromagnetic interference and improves the signal-to-noise ratio. The discharge induction mechanism 1 is threaded, and the variable pitch of the helical shape creates a directional characteristic facing the cable, greatly improving the sensitivity of high-frequency pulse signal measurement and reducing the influence of external disturbances. The anti-interference air layer 502 improves the anti-interference capability of the discharge sensor body 501, reducing the error of the discharge sensor body 501. After reducing external interference, the discharge sensor body 501 facilitates the sensing of detection signals from the conductive layer 103 and electrode layer 104. The signal line 504 facilitates the transmission of signals from the discharge sensor body 501.

[0030] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A high frequency flexible sensor for partial discharge detection of a cable, characterized in that, Include: Discharge induction mechanism (1), the discharge induction mechanism (1) is provided as two groups, and the discharge induction mechanism (1) is parallel left and right, the left discharge induction mechanism (1) is fixedly connected with the fixed box (2) at the right rear end, and the left of the right discharge induction mechanism (1) is fixedly connected with the fixed plate (3) at the front end; Quick connection mechanism (4), the left and right sides of the fixed box (2) are provided with quick connection mechanism (4), the upper end of the discharge induction mechanism (1) is provided with discharge sensing mechanism (5), and the bottom of the discharge induction mechanism (1) is provided with grounding support mechanism (6).

2. The high-frequency flexible sensor for partial discharge detection of a cable according to claim 1, characterized in that, The discharge induction mechanism (1) includes an encapsulation layer (101), a flexible substrate (102) is bonded to the bottom of the encapsulation layer (101), an electrically conductive layer (103) is bonded to the upper end of the flexible substrate (102), an electrode layer (104) is disposed on the upper end of the electrically conductive layer (103), a shielding layer (105) is bonded to the upper end of the electrode layer (104), and the shielding layer (105) is bonded to the encapsulation layer (101).

3. The high-frequency flexible sensor for partial discharge detection of a cable according to claim 1, characterized in that, The quick connection mechanism (4) includes mounting blocks (401) mounted on the left and right sides of the fixed box (2), pull rods (402) movably inserted in the middle of the mounting blocks (401), first trapezoidal blocks (403) fixedly connected to the side of the pull rods (402) close to each other, springs (404) sleeved on the outer surfaces of the pull rods (402), connecting plates (405) fixedly connected to the left and right sides of the front end of the fixed plate (3), and second trapezoidal blocks (406) fixedly connected to the side of the connecting plates (405) away from each other.

4. The high-frequency flexible sensor for partial discharge detection of a cable according to claim 3, characterized in that, The fixed box (2) and the mounting block (401) are provided with movable grooves matched with the first trapezoidal blocks (403), and the first trapezoidal blocks (403) are attached to the second trapezoidal blocks (406).

5. The high frequency flexible sensor for partial discharge detection of a cable according to claim 1, wherein, The discharge sensing mechanism (5) includes a discharge sensor body (501) mounted on the discharge induction mechanism (1), two groups of anti-interference air layers (502) are formed on the left and right sides of the discharge sensor body (501), a waterproof plug (503) is mounted on the front end of the discharge sensor body (501), and a signal line (504) is inserted in the middle of the waterproof plug (503).

6. The high frequency flexible sensor for partial discharge detection of a cable according to claim 1, wherein, The grounding support mechanism (6) includes a mounting plate (601) mounted on the bottom of the discharge induction mechanism (1), support plates (602) fixedly connected to the left and right sides of the bottom of the mounting plate (601), anti-skid pads (603) sewn to the bottom of the support plates (602), a plurality of fixed columns (604) equidistantly mounted on the bottom of the mounting plate (601), and suction cups (605) mounted on the bottom of the fixed columns (604).

7. The high-frequency flexible sensor for partial discharge detection of a cable according to claim 1, characterized in that, The discharge induction mechanism (1) is provided in a threaded type.

8. The high frequency flexible sensor for partial discharge detection of a cable according to claim 1, wherein, The front end of the fixed plate (3) is fixedly connected with a clamping block, the fixed box (2) is provided with a clamping groove matched with the clamping block, and the fixed plate (3) and the fixed box (2) form a clamping connection mechanism.

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