Power transmission and distribution line connection device with temperature monitoring function

Abstract

The utility model relates to the technical field of power equipment, and particularly discloses a power transmission and distribution line connection device with a temperature monitoring function, which comprises a lead wire clamp, a drainage wire clamp and a temperature monitoring assembly, the lead wire clamp and the drainage wire clamp are respectively provided with a lead wire clamping channel, and the lead wire clamping channels of the lead wire clamp and the drainage wire clamp are perpendicular to each other. A wire inlet of the wire clamp is located in the side wall of the wire clamp, two locking assemblies are arranged at the wire inlet, and each locking assembly comprises a locking rod, a hinge shaft and a torsional spring. The wire clamp can realize live-line connection operation of the drainage wire in the vertical direction of the power transmission wire, and the power transmission wire clamp has an anti-wire-loosening design, so that the wire can be fixed by a single person, and the anti-vibration and anti-loosening performance is greatly improved compared with a traditional device after the wire clamp is closed. Meanwhile, the wire clamp is integrated with a temperature monitoring function, so that the temperature of the wire at the connection position can be monitored in real time, and temperature abnormity can be found in time.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power equipment, in particular to a power transmission and distribution line connection device with a temperature monitoring function. Background Art

[0002] As a kind of hardware in the power transmission and distribution line, the function of the splicing clamp is to connect the conductor and the branch line. It can not only transmit the electrical load, but also withstand a certain degree of mechanical stress. It builds a connection bridge between substations, undertakes the key task of power transmission, and is an indispensable part of the power grid. At two lines at the same voltage level that intersect each other, the splicing clamp achieves effective connectivity between lines at different spatial levels by short-circuiting the lines.

[0003] Various connecting wire clamps are often used at non-bearing positions in power overhead wires for connecting wires to wires, wires to transformers, switches and other equipment, such as T-type wire clamps. The main function of T-type wire clamps is to connect horizontal and vertical wires. For example, the T-type wire clamps described in reference 1 (Chinese patent document with publication number CN110048356A) are used.

[0004] Reference 1 records a T-shaped wire clamp for power transmission wires on power transmission line towers, comprising a T-shaped aluminum seat, two transition cover plates and four mounting recesses, the surface of the T-shaped aluminum seat is provided with a groove that runs through along its length, the interior of the groove is provided with a clamping device, the clamping device comprises a fixed sleeve, one side of the fixed sleeve is provided with an adjustment groove, the interior of the adjustment groove is provided with a movable plate, one side of the movable plate is connected to a support rod, one end of the support rod passes through the fixed sleeve and is connected to a clamping ring. The T-shaped wire clamp for power transmission wires on power transmission line towers and its use method are as follows: by bending the adjustment handle upward, the L-shaped rod is driven upward, the driving block pushes the driven rod, and the moving rod is driven to move, and one end of the driven rod drives the adjustment rotary rod to rotate, so that the adjustment rotary rod moves away from one end of the driven rod and moves in the opposite direction to the other end; at the same time, the slider on the surface of the right support rod moves on the movable groove, so that the two support rods are close at the same time.

[0005] The above-mentioned wire clamps are only suitable for power outage installation, and the wire clamps are crimped by mechanical bolts. After a long period of line operation, the joints are prone to loosening, resulting in gaps in the connection parts, increased contact resistance, power consumption and heat generation, and increased wire clamp temperature, which increases the line load and causes a waste of line energy. In addition, the increase in contact resistance is likely to affect line equipment. If the phenomenon of heating that damages line operation such as transformers cannot be discovered in time, it will also affect line safety. Therefore, it is necessary to integrate a temperature monitoring function on the splice clamp to monitor the temperature of the conductor at the splice in real time, detect temperature abnormalities in time and issue an alarm. Utility Model Content

[0006] The purpose of the present utility model is to solve the above technical problems and provide a power transmission and distribution line connection device with a temperature monitoring function.

[0007] To solve the deficiencies of the above technical problems, the technical solution adopted by the present utility model is: a power transmission and distribution line connection device with a temperature monitoring function, including a conductor clamp, a jumper clamp, and a temperature monitoring component. The conductor clamp and the jumper clamp are respectively provided with conductor clamping channels, and the conductor clamping channels of the conductor clamp and the jumper clamp are perpendicular to each other;

[0008] The inlet of the conductor clamp is located on its side wall, and two locking components are arranged at the inlet;

[0009] The locking component includes a locking rod, a hinge shaft, and a torsion spring. Two grooves are arranged side by side at the bottom of the inlet. The hinge shafts of the two locking components are respectively inserted into the two grooves. The lower end of the locking rod is rotatably inserted on the hinge shaft. The locking rod has two extreme positions. When the locking rod is in the first extreme position, its upper end abuts against the top of the inlet. When the locking rod is in the second extreme position, its upper end is located in the conductor clamping channel. A torsion spring is arranged between the locking rod and the hinge shaft, and this torsion spring makes the locking rod tend to rotate to the first extreme position;

[0010] A first pressure head and a first driving component are arranged in the conductor clamping channel of the conductor clamp. A conductor clamping cavity is formed between the first pressure head and the top of the conductor clamping channel. The first driving component can drive the first pressure head to approach or move away from the top of the conductor clamping channel;

[0011] A second pressure head and a second driving component are arranged in the conductor clamping channel of the jumper clamp. A conductor clamping cavity is formed between the second pressure head and the top of the conductor clamping channel. The second driving component can drive the second pressure head to approach or move away from the top of the conductor clamping channel;

[0012] The temperature monitoring component includes a plurality of patch-type temperature sensors, a box body fixed on the top of the conductor clamp, and a processor, a power supply module, and a signal conditioning and interface circuit built in the box body. Temperature sensors are arranged on both the conductor clamp and the jumper clamp, and the temperature sensors are electrically connected to the processor.

[0013] As a further optimization of the power transmission and distribution line connection device with a temperature monitoring function of the present utility model: the locking rod includes a base rod and a movable head hinged to the head end of the base rod. The locking rod is rotatably inserted on the hinge shaft through its base rod, and a return spring is also arranged between the base rod and the movable head.

[0014] As a further optimization of a power transmission and distribution line connection device with a temperature monitoring function according to the present utility model: The first driving assembly includes an adjusting screw and a lifting ring for cooperating with the clamping mouth of the shot gun type operating rod. A threaded hole cooperating with the adjusting screw is provided at the bottom of the wire clamp. One end of the adjusting screw penetrates through the threaded hole and is connected to the first pressing head, and the lifting ring is arranged at the other end of the adjusting screw.

[0015] As a further optimization of a power transmission and distribution line connection device with a temperature monitoring function according to the present utility model: A chute is opened at the bottom of the wire clamping channel of the bypass wire clamp. The second pressing head is a "T" - shaped structure composed of a pressing part and a transmission part, and the transmission part of the second pressing head is slidably arranged up and down in the chute.

[0016] As a further optimization of a power transmission and distribution line connection device with a temperature monitoring function according to the present utility model: The second driving assembly includes a tightening bolt and a locknut. A threaded hole cooperating with the tightening bolt is provided at the bottom of the bypass wire clamp. The screw end of the tightening bolt penetrates through the threaded hole and is connected to the second pressing head, and the locknut is screwed on the screw of the tightening bolt outside the bypass wire clamp.

[0017] As a further optimization of a power transmission and distribution line connection device with a temperature monitoring function according to the present utility model: A plurality of locking bolts for locking the second pressing head are further arranged on the bypass wire clamp. A threaded hole cooperating with the locking bolt is provided on the side wall of the bypass wire clamp, and the screw end of the locking bolt penetrates through the threaded hole and is placed in the wire clamping channel.

[0018] As a further optimization of a power transmission and distribution line connection device with a temperature monitoring function according to the present utility model: The tightening bolt is a fixed - torque bolt.

[0019] As a further optimization of a power transmission and distribution line connection device with a temperature monitoring function according to the present utility model: The temperature monitoring component further includes a communication module, and the communication module is a 4G / 5G module, an NB - IoT module or a LoRa module.

[0020] As a further optimization of a power transmission and distribution line connection device with a temperature monitoring function according to the present utility model: The temperature monitoring component further includes an alarm module, and the alarm module is a flashing light or a buzzer.

[0021] As a further optimization of a power transmission and distribution line connection device with a temperature monitoring function according to the present utility model: A Hall current sensor and a corresponding signal processing circuit are further arranged in the box body.

[0022] The utility model has the following beneficial effects: The wire clamp of the utility model can realize the live connection operation of the drainage wire in the vertical direction of the transmission wire, and the transmission wire clamp has a wire anti-detachment design. A single person can complete the wire fixation, and the anti-vibration and anti-loosening performance after closing is greatly improved compared with the traditional device. The wire clamp of the utility model is also integrated with a temperature monitoring function, which can monitor the temperature of the wire at the connection point in real time and promptly detect abnormal temperatures. Description of the Drawings

[0023] Figure 1 It is a schematic diagram of the overall structure of the connection device (first perspective);

[0024] Figure 2 It is a schematic diagram of the overall structure of the connection device (second perspective);

[0025] Figure 3 It is a schematic diagram of the overall structure of the connection device (third perspective);

[0026] Figure 4 It is a schematic diagram of the structure of the temperature monitoring component of the connection device;

[0027] Figure 5 It is a schematic diagram of the overall structure of the connection device in the working state (first perspective);

[0028] Figure 6 It is a schematic diagram of the overall structure of the connection device in the working state (second perspective);

[0029] Markings in the figure:

[0030] 1. Wire clamp;

[0031] 101. First pressing head;

[0032] 102. First driving component;

[0033] 1021. Adjusting screw;

[0034] 1022. Hoop;

[0035] 2. Drainage wire clamp;

[0036] 201. Second pressing head;

[0037] 202. Second driving component;

[0038] 2021. Tightening bolt;

[0039] 2022. Locking nut;

[0040] 203. Locking bolt;

[0041] 3. Temperature monitoring component;

[0042] 301. Box body;

[0043] 302. Processor;

[0044] 303. Power supply module;

[0045] 304. Strobe light;

[0046] 4. Locking assembly

[0047] 401. Locking rod;

[0048] 402. Hinge shaft;

[0049] 403. Torsion spring;

[0050] 5. Power transmission wire;

[0051] 6. Drainage wire. Detailed implementation manners

[0052] To better understand the present utility model, the content of the present utility model will be further clarified below in conjunction with embodiments. However, the content of the present utility model is not limited to the following embodiments.

[0053] As shown in the figure: A power transmission and distribution line connection device with a temperature monitoring function includes a wire clamp 1, a drainage wire clamp 2, and a temperature monitoring component 3. The wire clamp 1 and the drainage wire clamp 2 are respectively provided with wire clamping channels, and the wire clamping channels of the wire clamp 1 and the drainage wire clamp 2 are perpendicular to each other. This connection device consists of a wire clamp and a drainage wire clamp to form a vertical cross-clamping system. By combining a temperature sensing module to collect the temperature rise data of the contact point in real time, it realizes the organic integration of power transmission and thermal state monitoring. While ensuring the reliable connection of the wire, it constructs a front-end sensing node for the health status of the power transmission line, realizing the in-depth coordination of intelligent early warning and physical structure.

[0054] The inlet of the wire clamp 1 is located on its side wall, and two locking assemblies 4 are arranged at the inlet. The locking assembly 4 includes a locking rod 401, a hinge shaft 402, and a torsion spring 403. Two grooves are arranged side by side at the bottom of the inlet. The hinge shafts 402 of the two locking assemblies 4 are respectively inserted into the two grooves, and the hinge shaft 402 is fixedly connected to the groove, and the hinge shaft 402 itself does not rotate. The lower end of the locking rod 401 is rotatably inserted on the hinge shaft 402. The locking rod 401 has two limit positions. When the locking rod 401 is in the first limit position, its upper end abuts against the top of the inlet. When the locking rod 401 is in the second limit position, its upper end is located in the wire clamping channel. A torsion spring 403 is arranged between the locking rod 401 and the hinge shaft 402, and this torsion spring 403 makes the locking rod 401 tend to rotate to the first limit position.

[0055] The locking rod 401 includes a base rod and a movable head hinged to the head end of the base rod. The locking rod 401 is rotatably inserted through the hinge shaft 402 via its base rod, and a return spring (torsion spring) is also provided between the base rod and the movable head. When no external force is applied, the axis of the movable head coincides with that of the base rod. The movement trajectory of the head end of the base rod does not interfere with the upper arm of the wire inlet. In the initial state, the locking rod 401 stays at the first limit position through the blocking of its movable head. At this time, the force exerted by the torsion spring 403 on the locking rod 401 is not sufficient to cause rotation between the base rod and the movable head. When it is necessary to move the wire clamp 1 out of the wire clamping channel, the operator uses an external force to extrude the wire clamp 1 outward against the locking rod 401. When the extrusion force is large enough to overcome the pre-tightening force of the return spring (torsion spring), the movable head continues to rotate until the locking rod 401 moves out of the wire inlet, that is, the removal of the wire clamp 1 is completed.

[0056] A first wire pressing head 101 and a first driving assembly 102 are provided in the wire clamping channel of the wire clamp 1. A wire clamping cavity is formed between the first wire pressing head 101 and the top of the wire clamping channel, and the first driving assembly 102 can drive the first wire pressing head 101 to approach or move away from the top of the wire clamping channel.

[0057] The first driving assembly 102 includes an adjusting screw 1021 and a lifting ring 1022 for cooperating with the chuck of the gun-type operating rod. A threaded hole cooperating with the adjusting screw 1021 is provided at the bottom of the wire clamp 1. One end of the adjusting screw 1021 penetrates through the threaded hole and is connected to the first wire pressing head 101, and the lifting ring 1022 is arranged at the other end of the adjusting screw 1021.

[0058] A second wire pressing head 201 and a second driving assembly 202 are provided in the wire clamping channel of the bypass wire clamp 2. A wire clamping cavity is formed between the second wire pressing head 201 and the top of the wire clamping channel, and the second driving assembly 202 can drive the second wire pressing head 201 to approach or move away from the top of the wire clamping channel.

[0059] A chute is opened at the bottom of the wire clamping channel of the bypass wire clamp 2. The second wire pressing head 201 has a "T" - shaped structure composed of a top pressing part and a transmission part, and the transmission part of the second wire pressing head 201 is slidably arranged up and down in the chute.

[0060] The second driving assembly 202 includes a top - tight bolt 2021 and a locknut 2022. The top - tight bolt 2021 is a constant - torque bolt. A threaded hole cooperating with the top - tight bolt 2021 is provided at the bottom of the bypass wire clamp 2. The screw end of the top - tight bolt 2021 penetrates through the threaded hole and is connected to the second wire pressing head 201, and the locknut 2022 is screwed on the screw of the top - tight bolt 2021 outside the bypass wire clamp 2.

[0061] A number of locking bolts 203 for locking the second wire pressing head 201 are also provided on the drainage wire clamp 2. A threaded hole matching with the locking bolt 203 is provided on the side wall of the drainage wire clamp 2. The screw end of the locking bolt 203 penetrates through the threaded hole and is placed in the wire clamping channel.

[0062] The drainage wire clamp 2 is made of aviation aluminum. The end of the drainage wire 6 is inserted into the wire clamping channel in the arched hole. After the fastening top bolt 2021 reaches the torque with the best anti-loosening performance, the bolt breaks. The bolt jacks up the second wire pressing head 201 to press the wire, and anti-slip strips are provided on the part in contact with the wire. During the process of the bolt jacking up the second wire pressing head 201, the gap between the wire and the wire clamp decreases, and the contact is good, ensuring the smoothness of the wire. After the bolt is broken, the locking bolt 203 is tightened. There are 4 locking bolts 203 on the front and back sides. The locking bolt 203 fixes the second wire pressing head 201 to further prevent the wire from slipping or loosening. At the same time, vertical pressure is provided to further fix the second wire pressing head 201 and also prevent the second wire pressing head 201 from shaking or loosening back and forth.

[0063] Arc-shaped grooves are provided on the upper end surfaces of the first wire pressing head 101 and the second wire pressing head 201. This shape can increase the contact area between the wire pressing head and the wire and improve the clamping stability.

[0064] The temperature monitoring component 3 includes a number of temperature sensors, a box body 301 fixed on the top of the wire clamp 1, and a processor 302, a power module 303, a signal conditioning and interface circuit, a communication module, and an alarm module built in the box body 301. Temperature sensors (DALLAS DS18B20) are provided on both the wire clamp 1 and the drainage wire clamp 2, and the temperature sensors are electrically connected to the processor 302 (STM32F407). The signal conditioning and interface circuit is responsible for amplifying, filtering, converting and other processing of the signals output by the sensors to make them meet the input requirements of the processor and realize the electrical connection between the modules. Existing mature circuits can be used. The communication module is a 4G / 5G module, an NB-IoT module or a LoRa module, and the alarm module is a flashing light 304 or a buzzer. When the temperature is too high, the local alarm module is triggered and uploaded to the cloud through the communication module. The operation and maintenance personnel receive the alarm and process it. The flashing light 304 uses a low-power flashing light, which is convenient for inspection to identify the device status and data. When a fault is detected, the LED light flashes alarm and continues to flash for 24 hours. After the fault expands, it flashes again and continues to flash for 24 hours. The processor records the number of faults.

[0065] The box body 301 can also be built with a Hall current sensor and a corresponding signal processing circuit. When subsequent power construction requires power outage operations, the leakage (energization) of the wire can be monitored.

[0066] During installation, the adjusting screw rod cooperates with the hook of the American shot-gun type operating rod or the insulating operating rod through the lifting ring, delivers the wire clamp to the power transmission wire 5, aligns the wire with the inlet of the wire clamp, guides the wire to slide into the wire clamping channel. During the sliding process, the locking rod rotates towards the second limit position under the extrusion of the wire. After the wire is completely placed, the torsion spring releases its elastic potential energy, pushes the locking rod to rebound and close, and the locking rod returns to the first limit position. The operating rod further pushes the first wire pressing head upwards to clamp the wire through the first wire pressing head.

[0067] The specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above specific implementation manners, and those skilled in the art can make various deformations or modifications within the scope of the claims, which does not affect the essence of the present invention.

Claims

1. A power transmission and distribution line connection device with temperature monitoring function, characterized in that: It comprises a wire clamp (1), a drainage clamp (2) and a temperature monitoring component (3), wherein the wire clamp (1) and the drainage clamp (2) are respectively provided with a wire clamping channel, and the wire clamping channels of the wire clamp (1) and the drainage clamp (2) are perpendicular to each other; The wire inlet of the wire clamp (1) is located on its side wall, and two locking assemblies (4) are arranged at the wire inlet; The locking assembly (4) comprises a locking rod (401), a hinge shaft (402) and a torsion spring (403); two grooves are arranged side by side at the bottom of the wire inlet; the hinge shafts (402) of the two locking assemblies (4) are respectively inserted into the two grooves; the lower end of the locking rod (401) is rotatably inserted into the hinge shaft (402); the locking rod (401) has two extreme positions; when the locking rod (401) is in a first extreme position, its upper end abuts against the top of the wire inlet; when the locking rod (401) is in a second extreme position, its upper end is located in the wire clamping channel; a torsion spring (403) is arranged between the locking rod (401) and the hinge shaft (402); the torsion spring (403) causes the locking rod (401) to have a tendency to rotate toward the first extreme position; A first wire pressing head (101) and a first driving component (102) are arranged in the wire clamping channel of the wire clamp (1); a wire clamping cavity is formed between the first wire pressing head (101) and the top of the wire clamping channel; the first driving component (102) can drive the first wire pressing head (101) to approach or move away from the top of the wire clamping channel; A second wire pressing head (201) and a second driving assembly (202) are arranged in the wire clamping channel of the drainage wire clamp (2); a wire clamping cavity is formed between the second wire pressing head (201) and the top of the wire clamping channel; and the second driving assembly (202) can drive the second wire pressing head (201) to move closer to or farther from the top of the wire clamping channel; The temperature monitoring assembly (3) comprises a plurality of temperature sensors, a box body (301) fixed on the top of the wire clamp (1), a processor (302) built into the box body (301), a power module (303) and a signal conditioning and interface circuit. The wire clamp (1) and the drainage clamp (2) are both provided with temperature sensors, and the temperature sensors are electrically connected to the processor (302).

2. A power transmission and distribution line connection device with temperature monitoring function as claimed in claim 1, characterized in that: The locking rod (401) comprises a base rod and a movable head hinged to the head end of the base rod. The locking rod (401) is rotatably mounted on the hinge shaft (402) through the base rod. A return spring is also arranged between the base rod and the movable head.

3. A power transmission and distribution line connection device with temperature monitoring function as claimed in claim 1, characterized in that: The first driving assembly (102) comprises an adjusting screw (1021) and a lifting ring (1022) for cooperating with the clamping mouth of the gun-type operating rod. The bottom of the wire clamp (1) is provided with a threaded hole cooperating with the adjusting screw (1021). One end of the adjusting screw (1021) passes through the threaded hole and is connected to the first wire pressing head (101). The lifting ring (1022) is arranged at the other end of the adjusting screw (1021).

4. A power transmission and distribution line connection device with temperature monitoring function as claimed in claim 1, characterized in that: A slide groove is provided at the bottom of the wire clamping channel of the drainage wire clamp (2); the second wire pressing head (201) is a "T"-shaped structure consisting of a pressing part and a transmission part; the transmission part of the second wire pressing head (201) is slidably arranged in the slide groove.

5. A power transmission and distribution line connection device with temperature monitoring function as claimed in claim 4, characterized in that: The second driving assembly (202) comprises a tightening bolt (2021) and a locking nut (2022); a threaded hole cooperating with the tightening bolt (2021) is provided at the bottom of the drainage wire clamp (2); a screw end of the tightening bolt (2021) passes through the threaded hole and is connected to the second wire pressing head (201); and the locking nut (2022) is screwed onto the screw of the tightening bolt (2021) located outside the drainage wire clamp (2).

6. A power transmission and distribution line connection device with temperature monitoring function as claimed in claim 2, characterized in that: The drainage wire clamp (2) is also provided with a plurality of locking bolts (203) for locking the second wire pressing head (201); a side wall of the drainage wire clamp (2) is provided with threaded holes that cooperate with the locking bolts (203); the screw ends of the locking bolts (203) pass through the threaded holes and are placed in the wire clamping channel.

7. A power transmission and distribution line connection device with temperature monitoring function as claimed in claim 5, characterized in that: The tightening bolt (2021) is a fixed torque bolt.

8. A power transmission and distribution line connection device with temperature monitoring function as claimed in claim 1, characterized in that: The temperature monitoring component (3) also includes a communication module, which is a 4G / 5G module, a NB-IoT module or a LoRa module.

9. A power transmission and distribution line connection device with temperature monitoring function as claimed in claim 1, characterized in that: The temperature monitoring component (3) further comprises an alarm module, which is a flashing light (304) or a buzzer.

10. A power transmission and distribution line connection device with temperature monitoring function as claimed in claim 1, characterized in that: A Hall current sensor and a corresponding signal processing circuit are also arranged in the box body (301).

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