Box transformer substation cable head temperature detection device

Abstract

The invention relates to the technical field of temperature detection, in particular to a box transformer substation cable head temperature detection device. Comprising a cabinet body, a transformer, butt joints and a high-voltage cable, the transformer is installed on the cabinet body, the butt joints electrically connected with the transformer are arranged in the cabinet body at intervals, the butt joints are connected with the high-voltage cable, a fixing frame is installed on the side face of the cabinet body, through holes are formed in the fixing frame at intervals, and a guide mechanism and a translation mechanism are arranged on the fixing frame. A sliding block is arranged on the guide mechanism in a sliding mode, a wire hole is formed in the sliding block, and the guide mechanism is used for guiding the sliding block. Through the design of the translation mechanism and the guide mechanism, the fluorescent optical fiber temperature measurement sensor can be moved from the inner side of the cabinet body to the outer side to be replaced, the maintenance process is greatly simplified, the maintenance time is shortened, the maintenance cost is reduced, a rubber block is arranged as a physical barrier, and the maintenance efficiency is improved. And the risk of electric shock caused by air breakdown by high voltage when a worker replaces the fluorescent optical fiber temperature measurement sensor is effectively prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of temperature detection, and particularly to a temperature detection device for the cable head of a box-type substation. Background Art

[0002] With the acceleration of the urbanization process and the continuous increase in power demand, the box-type substation (referred to as "box substation" for short), a key component in the distribution system, is playing an increasingly important role in the power grid; as an important node connecting the high-voltage power grid and the low-voltage power grid on the user side, the box substation is not only responsible for voltage conversion but also undertakes the key responsibility of power distribution; however, under the condition of long-term high-load operation, overheating is likely to occur inside the box substation, especially at the cable joints. Such overheating will not only shorten the service life of the equipment but also may trigger serious safety accidents, such as fires or power outages.

[0003] To solve this problem, the "DL / T 664-2016 Application Specification for Infrared Diagnosis of Energized Equipment" puts forward the requirement of measuring the temperature of the cable terminals and intermediate joints of power cables with a voltage of 35 kV and below at least once a year; currently, the direct temperature measurement method is mainly adopted, that is, by installing a fluorescence optical fiber temperature sensor on the monitored temperature component to achieve real-time, accurate and on-line monitoring of the operating environment of the cable head. Although this method effectively improves the ability to identify potential overheating points, it also has significant deficiencies: since the fluorescence optical fiber temperature sensor is prone to failure when working in a high-temperature environment for a long time and needs to be replaced regularly, when the staff replaces it, because they must open the cabinet door for operation, there is no physical barrier between them and the high-voltage cable head, increasing the risk of electric shock caused by the high voltage breaking down the air. Summary of the Invention

[0004] In view of this, the present invention provides a temperature detection device for the cable head of a box substation, which can solve the problem that when the staff replaces the fluorescence optical fiber temperature sensor in the box substation, because they must open the cabinet door for operation, there is no physical barrier between them and the high-voltage cable head, increasing the risk of electric shock caused by the high voltage breaking down the air.

[0005] The technical solution of the present invention is as follows: A temperature detection device for a box-type substation cable head, which includes a cabinet body, a transformer, a docking head, and a high-voltage cable. A transformer is installed on the cabinet body. Docking heads electrically connected to the transformer are arranged at intervals inside the cabinet body. A high-voltage cable is connected to the docking head. A fixing frame is installed on the side of the cabinet body. Through holes are arranged at intervals on the fixing frame. A guiding mechanism and a translation mechanism are arranged on the fixing frame. A slider is slidably arranged on the guiding mechanism. A wire hole is arranged on the slider. The guiding mechanism is used to guide the slider. The translation mechanism is used to drive the slider to move out of and into the through hole. A controller is installed on the side of the cabinet body. Fluorescent optical fiber temperature sensors are connected to the controller at intervals. The ports of the fluorescent optical fiber temperature sensors penetrate into the wire hole and are brought into the cabinet body by the slider to contact the high-voltage cable. A lifting mechanism is arranged inside the fixing frame. A rubber block is arranged on the lifting mechanism. The lifting mechanism is used to drive the rubber block to move to block the through hole.

[0006] As a preferred technical solution of the present invention, the guiding mechanism includes a connecting frame, a guide rod, and an arc plate. Connecting frames are installed at intervals on the side of the fixing frame. A guide rod is slidably arranged on the connecting frame. An arc plate is connected to the end of the guide rod. The slider is slidably installed on the arc plate.

[0007] As a preferred technical solution of the present invention, the translation mechanism includes a motor, a first gear, a second gear, and a lead screw. A motor is arranged on the connecting frame. A first gear is connected to the output shaft of the motor. A second gear is rotatably arranged inside the connecting frame. The second gear meshes with the first gear. A lead screw is arranged on the arc plate. The lead screw is threadedly connected to the middle of the second gear.

[0008] As a preferred technical solution of the present invention, the lifting mechanism includes a first electric push rod and a connecting frame. First electric push rods are symmetrically arranged on the inner side of the fixing frame. A connecting frame is connected to the telescopic rod of the first electric push rod. The rubber block is arranged inside the connecting frame.

[0009] As a preferred technical solution of the present invention, a spring is further included. A spring is connected between the slider and the arc plate.

[0010] As a preferred technical solution of the present invention, a blocking mechanism is further included. The blocking mechanism includes a partition board, a fixing plate, a rotating plate, a fireproof cloth, a connecting plate, and a second electric push rod. Partition boards are installed at intervals on the top inside the cabinet body. Fixing plates are installed at intervals on the fixing frame. Two adjacent fixing plates are taken as a group. Rotating plates are installed at intervals on the fixing frame. The rotating plates are located between two fixing plates in the same group. A fireproof cloth is connected to the rotating plate. The fireproof cloth is used to block the burning object after being unfolded. The fireproof cloth is wound between two fixing plates in the same group. A connecting plate is connected to the rotating plate. A second electric push rod is installed on the partition board. The telescopic rod of the second electric push rod contacts the connecting plate.

[0011] As a preferred technical solution of the present invention, it further includes a magnetic plate. The magnetic plate is installed on the rotating plate and is used to adsorb on the partition plate to fix the rotating plate.

[0012] As a preferred technical solution of the present invention, it further includes a fire extinguishing mechanism. The fire extinguishing mechanism includes a glue cylinder and a solenoid valve. The glue cylinders are installed at intervals in the fixed frame. The glue cylinder is used to spray fireproof foaming glue to extinguish the burning object, and a solenoid valve is installed at the discharge port of the glue cylinder.

[0013] Beneficial effects: 1. Through the design of the translation mechanism and the guiding mechanism in the present invention, the fluorescence optical fiber temperature sensor can be moved out from the inside of the cabinet to the outside for replacement, greatly simplifying the maintenance process, reducing the maintenance time and cost. Moreover, by setting the rubber block as a physical barrier, it effectively prevents the risk of electric shock to the staff caused by the high-voltage electricity breaking down the air when replacing the fluorescence optical fiber temperature sensor.

[0014] 2. By setting the barrier mechanism in the present invention, it can quickly separate the cable head with abnormal temperature and the high-voltage cable by using the partition plate, the rotating plate, the fireproof cloth and the magnetic plate, thereby preventing the spread of fire from burning other normal cable heads and high-voltage cables, and further improving the safety.

[0015] 3. By introducing the fire extinguishing mechanism in the present invention, when a fire risk is detected, it can automatically spray fireproof foaming glue for initial fire extinguishing treatment, effectively controlling the development of the fire and protecting the electrical equipment inside the cabinet from damage. Description of the Drawings

[0016] Figure 1 It is a three-dimensional structure diagram of the present invention.

[0017] Figure 2 It is a three-dimensional structure diagram of the transformer, the docking head and the high-voltage cable of the present invention.

[0018] Figure 3 It is a three-dimensional structure diagram of the high-voltage cable, the fixed frame and the controller of the present invention.

[0019] Figure 4 It is a three-dimensional structure diagram of the guiding mechanism of the present invention.

[0020] Figure 5 It is a three-dimensional structure diagram of the translation mechanism of the present invention.

[0021] Figure 6 It is a three-dimensional structure diagram of the slider, the wire hole and the spring of the present invention.

[0022] Figure 7 It is a three-dimensional structure diagram of the first electric push rod, the connecting frame and the rubber block of the present invention.

[0023] Figure 8This is a three-dimensional structural schematic diagram of the lifting mechanism of the present invention.

[0024] Figure 9 This is a three-dimensional structural schematic diagram of the fixed frame, partition board and fixed plate of the present invention.

[0025] Figure 10 This is a three-dimensional structural schematic diagram of the barrier mechanism of the present invention.

[0026] Figure 11 This is a three-dimensional structural schematic diagram of the connecting plate, second electric push rod and magnetic plate of the present invention.

[0027] Figure 12 This is a separated structure diagram of the fixed plate, rotating plate and fireproof cloth of the present invention.

[0028] Figure 13 This is a three-dimensional structural schematic diagram of the rotating plate, fireproof cloth and magnetic plate of the present invention.

[0029] Figure 14 This is a three-dimensional structural schematic diagram of the fire extinguishing mechanism of the present invention.

[0030] Wherein: 1 - cabinet body, 2 - transformer, 3 - docking head, 4 - high-voltage cable, 5 - fixed frame, 501 - through hole, 601 - connecting frame, 602 - guide rod, 603 - arc plate, 7 - slider, 701 - wire hole, 801 - motor, 802 - first gear, 803 - second gear, 804 - lead screw, 9 - controller, 10 - fluorescence optical fiber temperature sensor, 1101 - first electric push rod, 1202 - connecting frame, 12 - rubber block, 13 - spring, 14 - partition board, 15 - fixed plate, 16 - rotating plate, 17 - fireproof cloth, 18 - connecting plate, 19 - second electric push rod, 20 - magnetic plate, 21 - rubber cylinder, 22 - solenoid valve. Specific embodiments

[0031] Embodiment: A temperature detection device for the cable head of a box-type substation, see Figures 1 - 8 As shown, it includes a cabinet body 1, a transformer 2, a docking head 3 and a high-voltage cable 4; the cabinet board on the front side of the cabinet body 1 is a detachable board, and by removing the detachable board, it is convenient for workers to carry out maintenance operations inside the cabinet body 1; a transformer 2 is installed on the top of the cabinet body 1; three docking heads 3 are arranged at intervals on the inner top of the cabinet body 1, and all three docking heads 3 are electrically connected to the transformer 2; a high-voltage cable 4 is connected to the docking head 3, and the high-voltage cable 4 transmits high-voltage current to the transformer 2 through the docking head 3, and then the transformer 2 converts the high-voltage current into low-voltage current and distributes it to household electricity;

[0032] It further includes a fixed frame 5, a guiding mechanism, a slider 7, a translation mechanism, a controller 9, a fluorescent optical fiber temperature sensor 10, a lifting mechanism and a rubber block 12; a fixed frame 5 is installed on the upper part of the front side of the cabinet body 1, and three through holes 501 are spaced apart on the fixed frame 5, and the three through holes 501 are distributed from left to right; a guiding mechanism and a translation mechanism are arranged on the fixed frame 5, a slider 7 is slidably arranged on the guiding mechanism, a wire hole 701 is opened on the slider 7, the guiding mechanism is used to guide the slider 7, and the translation mechanism is used to drive the slider 7 to move out and move in from the through hole 501. Moving out means moving the slider 7 out of the inner side of the fixed frame 5 through the through hole 501, and moving in means moving the slider 7 into the inner side of the fixed frame 5 through the through hole 501; a controller 9 is installed in the middle of the front side of the cabinet body 1; three fluorescent optical fiber temperature sensors 10 are connected to the controller 9 at intervals, the fluorescent optical fiber temperature sensors 10 are electrically connected to the controller 9, and the ports of the fluorescent optical fiber temperature sensors 10 penetrate into the wire hole 701 and are brought into the cabinet body 1 by the slider 7 to contact the interface of the high-voltage cable 4. In this way, the temperature of the interface of the high-voltage cable 4 can be detected by the fluorescent optical fiber temperature sensors 10; a lifting mechanism is arranged in the fixed frame 5, a rubber block 12 is arranged on the lifting mechanism, and the lifting mechanism is used to drive the rubber block 12 to move to block the through hole 501, so as to form a physical barrier through the rubber block 12 to protect the staff outside the cabinet body 1, preventing the high voltage from breaking down the air and causing electric shock to the staff.

[0033] See Figure 4 and Figure 5 As shown, the guiding mechanism includes a connecting frame 601, a guide rod 602 and an arc-shaped plate 603; three connecting frames 601 are installed at intervals on the front side of the fixed frame 5, and the three connecting frames 601 are distributed from left to right; two guide rods 602 are slidably arranged on the connecting frame 601; an arc-shaped plate 603 is installed between the ends of the two guide rods 602 on the same connecting frame 601, the slider 7 is slidably installed on the arc-shaped plate 603, and the slider 7 presses the port of the fluorescent optical fiber temperature sensor 10 against the arc-shaped plate 603 for fixation.

[0034] See Figure 4 and Figure 5 As shown, the translation mechanism includes a motor 801, a first gear 802, a second gear 803 and a lead screw 804; a motor 801 is arranged at the lower part of the front side of the connecting frame 601, and the motor 801 is electrically connected to the controller 9; a first gear 802 is connected to the output shaft of the motor 801; a second gear 803 is rotatably arranged in the connecting frame 601, the second gear 803 meshes with the first gear 802, and a threaded hole is opened in the middle of the second gear 803; a lead screw 804 is arranged on the front side of the arc-shaped plate 603, and the lead screw 804 is threadedly connected to the threaded hole in the middle of the second gear 803.

[0035] See Figure 7 and Figure 8As shown in the figure, the lifting mechanism includes a first electric push rod 1101 and a connecting frame 1202; twelve groups of first electric push rods 1101 are symmetrically arranged before and after inside the fixed frame 5. The number of a group of first electric push rods 1101 is two. Two first electric push rods 1101 in the same group are distributed left and right. The first electric push rod 1101 is electrically connected to the controller 9; a connecting frame 1202 is connected between the telescopic rods of two first electric push rods 1101 in the same group, and a rubber block 12 is arranged inside the connecting frame 1202.

[0036] During use, the controller 9 is used to control the telescopic rod of the first electric push rod 1101 to extend, so that the telescopic rod of the first electric push rod 1101 drives the connecting frame 1202 and the rubber block 12 to move towards the side close to the through hole 501 until the rubber block 12 blocks the through hole 501 on the fixed frame 5, thereby blocking the inside and outside of the cabinet body 1. During this period, when the rubber block 12 contacts the guide rod 602, the lead screw 804 and the fluorescence optical fiber temperature sensor 10, the guide rod 602, the lead screw 804 and the fluorescence optical fiber temperature sensor 10 will squeeze the rubber block 12 to deform, so that the rubber block 12 fits on the outer surfaces of the guide rod 602, the lead screw 804 and the fluorescence optical fiber temperature sensor 10 through deformation. Then, the high-voltage cable 4 is used to transmit high-voltage current to the transformer 2 through the docking head 3, and then the transformer 2 converts the high-voltage current into low-voltage current and distributes it to household electricity. During this period, when the current passes through the high-voltage cable 4 and the docking head 3, the fluorescence optical fiber temperature sensor 10 can detect the temperature at the interface of the high-voltage cable 4, and the fluorescence optical fiber temperature sensor 10 sends the detected data to the controller 9, and then the controller 9 sends the signal to the background, so as to facilitate the staff in the background to monitor the temperature at the interface of the high-voltage cable 4 in real time;

[0037] Afterwards, when it is necessary to replace the fluorescence optical fiber temperature sensor 10, the controller 9 controls the motor 801 to drive the first gear 802 to rotate, causing the first gear 802 to drive the second gear 803 to rotate, thereby driving the lead screw 804, the arc plate 603, the guide rod 602 and the slider 7 to move forward, separating the port of the fluorescence optical fiber temperature sensor 10 in the wire hole 701 of the slider 7 from the interface of the high-voltage cable 4. At the same time, the controller 9 controls the telescopic rod of the rear first electric push rod 1101 to shorten, causing the telescopic rod of the rear first electric push rod 1101 to drive the connecting frame 1202 and the rubber block 12 to move backward and reset away from the through hole 501, so that the rubber block 12 at the rear no longer blocks the through hole 501. However, since the rubber block 12 at the front still blocks the through hole 501, the rubber block 12 at the front can still block the inside and outside of the cabinet body 1, thereby forming a physical barrier through the rubber block 12 to protect the staff outside the cabinet body 1 from electric shock caused by high-voltage electricity breaking down the air. When the arc plate 603 moves forward to completely enter the through hole 501, the controller 9 then controls the telescopic rod of the rear first electric push rod 1101 to extend, causing the telescopic rod of the rear first electric push rod 1101 to drive the connecting frame 1202 and the rubber block 12 to move toward the through hole 501, so that the rubber block 12 at the rear re-blocks the through hole 501. Subsequently, the controller 9 controls the telescopic rod of the front first electric push rod 1101 to shorten, causing the telescopic rod of the front first electric push rod 1101 to drive the connecting frame 1202 and the rubber block 12 to move away from the through hole 501, so that the rubber block 12 at the front no longer blocks the through hole 501, enabling the arc plate 603 to move forward and leave the through hole 501 until the arc plate 603 moves out of the cabinet body 1 from the inside to the outside. Then, the staff can push the slider 7 backward to loosen the port of the fluorescence optical fiber temperature sensor 10 in the wire hole 701 of the slider 7, then pull out the fluorescence optical fiber temperature sensor 10 from the wire hole 701, disconnect the fluorescence optical fiber temperature sensor 10 from the controller 9, then reconnect the new fluorescence optical fiber temperature sensor 10 to the controller 9, and re-insert the port of the new fluorescence optical fiber temperature sensor 10 into the wire hole 701. Then, pull the slider 7 forward to reset, causing the slider 7 to press the port of the new fluorescence optical fiber temperature sensor 10 tightly against the arc plate 603. After that, the controller 9 controls the motor 801 to drive the first gear 802 to reverse and reset, causing the first gear 802 to drive the second gear 803 to reverse, thereby driving the lead screw 804, the arc plate 603, the guide rod 602 and the slider 7 to move backward and reset. When the arc plate 603 moves backward to completely enter the through hole 501, the controller 9 then controls the telescopic rod of the front first electric push rod 1101 to extend, causing the telescopic rod of the front first electric push rod 1101 to drive the connecting frame 1202 and the rubber block 12 to move toward the through hole 501,Thereby, the rubber block 12 at the front side re-blocks the through hole 501. Subsequently, the controller 9 controls the telescopic rod of the first electric push rod 1101 at the rear side to shorten, so that the telescopic rod of the first electric push rod 1101 at the rear side drives the connecting frame 1202 and the rubber block 12 to move away from the through hole 501, thereby enabling the rubber block 12 at the rear side to no longer block the through hole 501, so that when the arc-shaped plate 603 moves backward, it can leave from the through hole 501, and further enabling the arc-shaped plate 603 to move from the outside of the cabinet body 1 to the inside, until the port of the fluorescence optical fiber temperature sensor 10 in the wire hole 701 of the slider 7 contacts the interface of the high-voltage cable 4. Finally, the controller 9 controls the telescopic rod of the first electric push rod 1101 at the rear side to elongate, so that the telescopic rod of the first electric push rod 1101 at the rear side drives the connecting frame 1202 and the rubber block 12 to move toward the side close to the through hole 501, thereby enabling the rubber block 12 at the rear side to re-block the through hole 501. In this way, the replacement of the fluorescence optical fiber temperature sensor 10 can be completed outside the cabinet body 1.

[0038] See Figure 6 As shown, it further includes a spring 13; springs 13 are connected between the front sides of the left and right sides of the slider 7 and the front side of the arc-shaped plate 603.

[0039] In the initial state, the spring 13 is squeezed by the slider 7, so that the spring 13 is in a compressed state;

[0040] By arranging the spring 13 and utilizing the elastic force of the spring 13, the spring 13 can apply a forward thrust to the slider 7, thereby enabling the slider 7 to further press the port of the fluorescence optical fiber temperature sensor 10 on the arc-shaped plate 603, and further strengthening the fixing of the port of the fluorescence optical fiber temperature sensor 10; during the subsequent replacement of the fluorescence optical fiber temperature sensor 10, when the staff pushes the slider 7 to move backward, the spring 13 is further compressed. When the staff re-inserts the port of the new fluorescence optical fiber temperature sensor 10 into the wire hole 701, just release the slider 7. Under the action of the elastic force of the spring 13, the spring 13 will drive the slider 7 to move forward and reset, so that the slider 7 presses the port of the new fluorescence optical fiber temperature sensor 10 on the arc-shaped plate 603.

[0041] See Figures 9 - 13As shown in the figure, it further includes a barrier mechanism. The barrier mechanism includes a partition plate 14, a fixed plate 15, a rotating plate 16, a fireproof cloth 17, a connecting plate 18, and a second electric push rod 19. Two partition plates 14 are installed at the top inside the cabinet body 1. The partition plates 14 are located between two adjacent docking heads 3. The material of the partition plate 14 is ferrite, so that the partition plate 14 can be attracted by a magnet and has a very high resistivity. Two groups of fixed plates 15 are installed on the fixed frame 5. The number of fixed plates 15 in one group is two, and the two fixed plates 15 in the same group are distributed left and right. Two rotating plates 16 are installed on the fixed frame 5. The rotating plates 16 are located between the two fixed plates 15 in the same group, and the rotating plates 16 are aligned with the partition plates 14. A fireproof cloth 17 is connected to the rotating plate 16. After the fireproof cloth 17 is unfolded, it is used to block the burning object. The fireproof cloth 17 is wound between the two fixed plates 15 in the same group. A connecting plate 18 is connected to the upper side of the rotating plate 16. A second electric push rod 19 is installed on the partition plate 14. The telescopic rod of the second electric push rod 19 contacts the connecting plate 18. The second electric push rod 19 is electrically connected to the controller 9.

[0042] See Figures 10 - 13 As shown in the figure, it further includes a magnetic plate 20. A magnetic plate 20 is installed at the rear side of the rotating plate 16. The magnetic plate 20 is used to adsorb on the partition plate 14 to fix the rotating plate 16.

[0043] By setting up a barrier mechanism, when the fluorescence optical fiber temperature sensor 10 detects that the temperature at the interface of the high-voltage cable 4 is higher than the preset value, the fluorescence optical fiber temperature sensor 10 will send a signal to the controller 9. After receiving the signal, the controller 9 will send it to the background to remind the staff at the background that the temperature at the interface of the high-voltage cable 4 is abnormal, so as to dispatch staff for maintenance in time. At the same time, the controller 9 will control the telescopic rod of the second electric push rod 19 to extend, so that the telescopic rod of the second electric push rod 19 pushes the connecting plate 18 to rotate, thereby driving the rotating plate 16 and the magnetic plate 20 to rotate, so that the rotating plate 16 drives the fireproof cloth 17 to unfold until the magnetic plate 20 contacts the bottom of the partition plate 14, and the magnetic plate 20 is adsorbed on the bottom of the partition plate 14. In this way, the space in the cabinet 1 can be blocked by the partition plate 14, the rotating plate 16, the magnetic plate 20 and the unfolded fireproof cloth 17, so as to block the abnormal-temperature connector 3 and the high-voltage cable 4 in the same space, and avoid the abnormal-temperature connector 3 and the high-voltage cable 4 catching fire and burning other connectors 3 and high-voltage cables 4; After the staff arrives at the scene, they can first control the high-voltage cable 4 at this place to stop transmitting current, then remove the detachable plate on the front side of the cabinet 1, and then enter the inside of the cabinet 1 to repair the connector 3 and the high-voltage cable 4 with abnormal temperature. And control the telescopic rod of the second electric push rod 19 to shorten and reset through the controller 9, so that the telescopic rod of the second electric push rod 19 releases the connecting plate 18, then rewind the unfolded fireproof cloth 17, then pull the magnetic plate 20 off the bottom of the partition plate 14, then put the rewound fireproof cloth 17 back in place, and push the connecting plate 18, the rotating plate 16 and the magnetic plate 20 to reverse and reset. After that, reinstall the detachable plate on the front side of the cabinet 1, and then control the high-voltage cable 4 at this place to continue transmitting current.

[0044] See Figure 14 As shown, there is also a fire extinguishing mechanism, and the fire extinguishing mechanism includes a glue cylinder 21 and an electromagnetic valve 22; Four glue cylinders 21 are installed at intervals inside the fixed frame 5, and the glue cylinder 21 is used to spray fireproof foaming glue to extinguish the fire on the burning object; An electromagnetic valve 22 is installed at the discharge port of the glue cylinder 21, and the electromagnetic valve 22 is electrically connected to the controller 9.

[0045] By setting up a fire extinguishing mechanism, after the controller 9 controls the telescopic rod of the second electric push rod 19 to extend and blocks the abnormal-temperature connector 3 and the high-voltage cable 4 in the same space, the controller 9 will control the corresponding electromagnetic valve 22 in the space to open, so that the fireproof foaming glue in the glue cylinder 21 is sprayed into the space, so as to extinguish the fire on the connector 3 and the high-voltage cable 4 in the space, so as to prevent the fire from being too large and burning the entire detection; After the staff arrives at the scene, they can control the corresponding electromagnetic valve 22 to close through the controller 9, so that the fireproof foaming glue in the glue cylinder 21 stops spraying, and then enter the inside of the cabinet 1 for maintenance work.

Claims

1. A temperature detection device for a box-type substation cable head, comprising a cabinet body (1), a transformer (2), a docking head (3) and a high-voltage cable (4). The transformer (2) is installed on the cabinet body (1), and the docking head (3) electrically connected to the transformer (2) is arranged at intervals in the cabinet body (1). The high-voltage cable (4) is connected to the docking head (3), and it is characterized in that, A fixed frame (5) is installed on the side of the cabinet body (1). Through holes (501) are arranged at intervals on the fixed frame (5). A guiding mechanism and a translation mechanism are arranged on the fixed frame (5). A slider (7) is slidably arranged on the guiding mechanism. A wire hole (701) is formed in the slider (7). The guiding mechanism is used to guide the slider (7), and the translation mechanism is used to drive the slider (7) to move out of and into the through hole (501). A controller (9) is installed on the side of the cabinet body (1). Fluorescent optical fiber temperature sensors (10) are connected to the controller (9) at intervals. The ports of the fluorescent optical fiber temperature sensors (10) penetrate into the wire hole (701) and are brought into the cabinet body (1) by the slider (7) to contact the high-voltage cable (4). A lifting mechanism is arranged in the fixed frame (5). A rubber block (12) is arranged on the lifting mechanism. The lifting mechanism is used to drive the rubber block (12) to move to block the through hole (501).

2. The temperature detection device for the cable head of the box-type substation according to claim 1, characterized in that, The guiding mechanism includes a connecting frame (601), a guide rod (602) and an arc-shaped plate (603). Connecting frames (601) are installed on the side of the fixed frame (5) at intervals. A guide rod (602) is slidably arranged on the connecting frame (601). An arc-shaped plate (603) is connected to the end of the guide rod (602). The slider (7) is slidably installed on the arc-shaped plate (603).

3. The temperature detection device for the box-type substation cable head according to claim 2, wherein The translation mechanism includes a motor (801), a first gear (802), a second gear (803) and a lead screw (804). A motor (801) is arranged on the connecting frame (601). A first gear (802) is connected to the output shaft of the motor (801). A second gear (803) is rotatably arranged in the connecting frame (601). The second gear (803) meshes with the first gear (802). A lead screw (804) is arranged on the arc-shaped plate (603). The lead screw (804) is threadedly connected to the middle of the second gear (803).

4. A temperature detection device for a box-type substation cable head according to claim 1, characterized in that, The lifting mechanism includes a first electric push rod (1101) and a connecting frame (1202). First electric push rods (1101) are symmetrically arranged on the inner side of the fixed frame (5). A connecting frame (1202) is connected to the telescopic rod of the first electric push rod (1101). The rubber block (12) is arranged in the connecting frame (1202).

5. The temperature detection device for the box-type substation cable head according to claim 2, characterized in that A spring (13) is further included. A spring (13) is connected between the slider (7) and the arc-shaped plate (603).

6. The temperature detection device for the box-type substation cable head according to claim 1, characterized in that, It further includes a barrier mechanism, which includes a partition board (14), a fixing plate (15), a rotating plate (16), a fireproof cloth (17), a connecting plate (18) and a second electric push rod (19). The partition board (14) is installed at intervals on the inner top of the cabinet body (1), the fixing plates (15) are installed at intervals on the fixing frame (5), and two adjacent fixing plates (15) form a group. The rotating plates (16) are installed at intervals on the fixing frame (5), and the rotating plate (16) is located between two fixing plates (15) in the same group. The fireproof cloth (17) is connected to the rotating plate (16), and the fireproof cloth (17) is used to block the burning object after being unfolded. The fireproof cloth (17) is wound between two fixing plates (15) in the same group. The connecting plate (18) is connected to the rotating plate (16), the second electric push rod (19) is installed on the partition board (14), and the telescopic rod of the second electric push rod (19) contacts the connecting plate (18).

7. A temperature detection device for the cable head of a box-type substation according to claim 6, characterized in that, It further includes a magnetic plate (20), and the magnetic plate (20) is installed on the rotating plate (16). The magnetic plate (20) is used to adsorb on the partition board (14) to fix the rotating plate (16).

8. The temperature detection device for the box-type substation cable head according to claim 1, wherein It further includes a fire extinguishing mechanism, which includes a rubber cylinder (21) and a solenoid valve (22). The rubber cylinders (21) are installed at intervals in the fixing frame (5). The rubber cylinder (21) is used to spray fireproof foaming glue to extinguish the burning object, and the solenoid valve (22) is installed at the discharge port of the rubber cylinder (21).

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