Power cable state on-line monitoring equipment

Abstract

The utility model belongs to the technical field of power cable detection equipment, in particular to power cable state on-line monitoring equipment, which comprises an equipment main body, a holding part is arranged at the top of the equipment main body, a placement seat is arranged at the bottom of the equipment main body, and the equipment main body is specifically composed of a mounting piece and a fixing piece. According to the utility model, the infrared thermal imaging detection probe and the temperature sensor are arranged in the equipment main body, so that the surface temperature of the power cable can be tested, a thermal abnormal area existing in the power cable can be analyzed, and effective response can be completed through an external control end; by arranging the mounting piece and the fixing piece, a certain protection effect is achieved, and meanwhile monitoring can be normally carried out; by arranging the limiting plate and the limiting assembly, the limiting spring in the limiting assembly can achieve good limiting operation, and by arranging the damping cylinder and the damping rod, deformation of the limiting spring can be effectively relieved.

Description

Technical Field

[0001] The utility model relates to the technical field of power cable detection equipment, in particular to an online monitoring device for power cable status. Background Art

[0002] Power cables are cables used to transmit and distribute electrical energy. They are commonly used in urban underground power grids, power station lead-out lines, internal power supply for industrial and mining enterprises, and underwater transmission lines across rivers and seas.

[0003] In power lines, the proportion of cables is gradually increasing. Power cables are cable products used to transmit and distribute high-power electric energy in the trunk lines of power systems, including 1-500kV and above various voltage levels and various insulation power cables;

[0004] The use of power cables has a history of more than 100 years. In 1879, American inventor TA Edison wrapped jute around a copper rod and inserted it into an iron pipe, then filled it with an asphalt mixture to make a cable. He laid the cable in New York, pioneering underground power transmission. The following year, the British Callender invented asphalt-impregnated paper insulated power cable; in 1889, the British SZ Ferranti laid a 10 kV oil-impregnated paper insulated cable between London and Deptford; in 1908, the UK built a 20 kV cable network, and power cables were increasingly used. In 1911, Germany laid 60 kV high-voltage cables, starting the development of high-voltage cables; in 1913, German M. Hochstadt developed a phase-shielded cable, which improved the electric field distribution inside the cable and eliminated the tangent stress on the insulation surface, becoming a milestone in the development of power cables; in 1952, Sweden laid 380 kV ultra-high voltage cables in northern power plants, realizing the application of ultra-high voltage cables. By the 1980s, 1100 kV and 1200 kV ultra-high voltage power cables had been produced.

[0005] The prior art has the following defects or problems: The prior art has a publication number of: CN218847443U. An online monitoring device for the status of an intermediate joint of a power cable includes a housing and a temperature detector for monitoring temperature. The housing includes a first housing and a second housing. The first housing is hinged to the second housing. The first housing and the second housing are fixedly connected by a fixing assembly. The temperature detector is arranged on the first housing. The second housing is provided with a receiving block for fitting with the cable. The first housing is provided with a sliding block for sliding in a direction close to or away from the receiving block. The sliding block and the receiving block are both used to abut against the cable. The first housing is provided with a sliding member for driving the sliding block to slide.

[0006] During use, the first shell and the second shell are buckled onto the cable and the middle joint. When facing cables of different diameters, the sliding block can be driven to move by the sliding member, so that the sliding block and the receiving block can clamp and fix the cable.

[0007] The above contents cannot achieve stable clamping of the power cable, and the contact end is easily damaged by contact with the cable surface sheath; a simple temperature sensor is used to monitor the cable status, but the monitoring effect is poor. Utility Model Content

[0008] In view of the deficiencies in the prior art, the utility model provides an online monitoring device for the status of a power cable, which solves the existing problems.

[0009] To achieve the above object, the utility model provides the following technical solutions: an online monitoring device for power cable status, comprising a device body, a gripping portion is provided on the top of the device body, a placement seat is provided on the bottom of the device body, and the device body is specifically composed of a mounting part and a fixing part;

[0010] A limit assembly, the limit assembly is fixedly mounted on the inner wall of the device body;

[0011] A limit plate, the limit plate is fixedly mounted on one end of the limit assembly;

[0012] A wiring portion, the wiring portion being fixedly mounted on one side of an outer wall of the mounting member;

[0013] The inner side wall of the fixing member is fixedly mounted with an infrared thermal imaging detection probe and a temperature sensor in sequence;

[0014] The wiring part is connected to the external power supply end and the control end through a wire, and the infrared thermal imaging detection probe and the temperature sensor are electrically connected to the wiring part through the wire.

[0015] As a preferred technical solution of the utility model, a holding portion is fixedly installed on the top of the mounting member by a fixing bolt, and the fixing member is fixedly installed on the end face of the placement seat. The mounting member and the fixing member are consistent in size and both have a receiving groove inside. The receiving groove is specifically a semicircular groove body structure, and limiting grooves are provided on the front and rear sides of the two groups of receiving grooves corresponding to the position of the limiting components.

[0016] As a preferred technical solution of the utility model, connecting columns are fixedly installed on both sides of the bottom of the mounting piece, connecting grooves are opened at corresponding positions on both sides of the end surface of the mounting piece, and the size of the connecting column is consistent with the size of the connecting groove.

[0017] As a preferred technical solution of the present utility model, the gripping portion includes a gripping groove, and the outer side wall of the gripping portion is provided with a gripping groove corresponding to the positions of five fingers.

[0018] As a preferred technical solution of the present utility model, the limit plate is specifically a semicircular arc plate-shaped structure, and a contact end is fixedly connected to its end surface, and the contact end is made of silicone material.

[0019] As a preferred technical solution of the utility model, the limit assembly includes a spring seat, a limit spring, a damping cylinder and a damping rod, the inside of the limit groove and the corresponding position of the inner wall of the limit plate are fixedly installed with spring seats, and the limit spring is fixedly installed between the spring seats;

[0020] A damping cylinder is arranged inside the limit spring, through holes are opened on both side end surfaces of the damping cylinder and damping rods are movably installed inside, and the other ends of the two groups of damping rods are connected to the spring seat.

[0021] Compared with the prior art, the utility model provides an online monitoring device for power cable status, which has the following beneficial effects:

[0022] 1. This kind of power cable status online monitoring equipment is equipped with an infrared thermal imaging detection probe and a temperature sensor inside the main body of the equipment. Both are connected to the wiring part through wires. At the same time, the wiring part is connected to the control end and the energy supply device through external wires. When the equipment is set on the outside of the power cable, the infrared thermal imaging detection probe and the temperature sensor can test the surface temperature of the power cable, analyze the thermal abnormality area inside the power cable, and complete effective response through the external control end. Compared with the existing monitoring equipment using simple temperature sensors to complete monitoring, the effect is better;

[0023] 2. The online monitoring device for the state of a power cable is provided with a mounting part and a fixing part, the fixing part is fixedly placed on the end face of the placement seat, the operator places the power cable section to be monitored into the receiving groove on the end face of the fixing part, lifts the mounting part through the gripping groove, and connects the mounting part and the fixing part to form the main body of the device through the connecting column and the connecting groove, so that the device can be covered on the outside of the power cable from top to bottom, playing a certain protective role while enabling the monitoring to operate normally;

[0024] 3. This kind of online monitoring equipment for the status of power cables, by setting a limit plate and a limit assembly, while the fixing part and the installation part are connected, the contact end of the limit plate end face can contact the surface of the power cable. Since it is made of silicone material, the surface sheath will not be damaged during the contact with the power cable. After the limit plate is in contact, the limit spring inside the bottom limit assembly can play a good limiting operation. In order to cope with the deformation of the limit spring itself, the present application sets a damping cylinder and a damping rod, which can effectively reduce the deformation of the limit spring itself, thereby improving the limiting effect of the structure and improving the monitoring accuracy and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a cross-sectional view of the overall structure of the utility model;

[0026] Figure 2 This is a schematic diagram of the three-dimensional structure of the mounting piece of the utility model;

[0027] Figure 3 This is a schematic diagram of the three-dimensional structure of the fixing member of the utility model;

[0028] Figure 4 This is a schematic diagram of the structure of the utility model at A;

[0029] Figure 5 It is a three-dimensional schematic diagram of the limit plate and limit assembly structure of the utility model.

[0030] In the figure: 1. Equipment body; 101. Mounting part; 102. Fixing part; 103. Accommodating groove; 104. Limiting groove; 105. Connecting column; 106. Connecting groove; 2. Holding part; 201. Holding groove; 3. Placement seat; 4. Limiting plate; 5. Limiting assembly; 501. Spring seat; 502. Limiting spring; 503. Damping cylinder; 504. Damping rod; 6. Wiring part. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] See also Figure 1 In this embodiment: an online monitoring device for power cable status includes a device body 1, a gripping portion 2 is provided on the top of the device body 1, a placement seat 3 is provided on the bottom of the device body 1, and the device body 1 is specifically composed of a mounting member 101 and a fixing member 102;

[0033] A limit assembly 5, the limit assembly 5 is fixedly mounted on the inner wall of the device body 1;

[0034] A limit plate 4, which is fixedly mounted on one end of the limit assembly 5;

[0035] The wiring portion 6 is fixedly mounted on one side of the outer wall of the mounting member 101;

[0036] The inner wall of the fixing member 102 is fixedly mounted with an infrared thermal imaging detection probe and a temperature sensor in sequence;

[0037] The wiring part 6 is connected to the external power supply end and the control end through a wire, and the infrared thermal imaging detection probe and the temperature sensor are electrically connected to the wiring part 6 through the wire;

[0038] By setting up an infrared thermal imaging detection probe and a temperature sensor inside the device body 1, both are connected to the wiring part 6 through a wire, and the wiring part 6 is connected to the control end and the power supply device through an external wire. When the device is installed on the outside of the power cable, the infrared thermal imaging detection probe and the temperature sensor can test the surface temperature of the power cable, analyze the thermal abnormality area inside the power cable, and complete an effective response through the external control end. Compared with the existing monitoring equipment using a simple temperature sensor to complete monitoring, the effect is better.

[0039] See also Figure 2-3 This embodiment is to achieve good covering of the power cable, play a certain protective role, and ensure that the monitoring operation can be carried out normally:

[0040] In this embodiment, the gripping portion 2 is fixedly installed on the top of the mounting member 101 by fixing bolts, and the fixing member 102 is fixedly installed on the end surface of the placement seat 3. The mounting member 101 and the fixing member 102 are consistent in size and both have a receiving groove 103 opened inside. The receiving groove 103 is specifically a semicircular groove body structure, and the two groups of receiving grooves 103 have limiting grooves 104 opened at the front and rear sides corresponding to the position of the limiting component 5; the bottom of the mounting member 101 is fixedly installed with connecting columns 105 on both sides, and the corresponding positions on both sides of the end surface of the fixing member 102 are opened with connecting grooves 106, and the size of the connecting column 105 is consistent with the size of the connecting groove 106;

[0041] By setting the installation part and the fixing part, the fixing part 102 is fixedly placed on the end face of the placement seat 3, and the operator places the power cable section to be monitored into the end face receiving groove 103 of the fixing part 102, lifts the installation part 101 through the holding groove 201, and cooperates with the connecting groove 106 through the connecting column 105, so that the installation part 101 and the fixing part 102 are connected to form the equipment body 1, so that the equipment can be covered on the outside of the power cable from top to bottom.

[0042] See also Figure 4-5 , this embodiment is to achieve effective limit operation on the power cable and improve monitoring accuracy and efficiency:

[0043] In this embodiment, the limiting plate 4 is specifically a semicircular arc plate structure, and a contact end is fixedly connected to its end surface, and the contact end is made of silicone material;

[0044] The limiting assembly 5 includes a spring seat 501, a limiting spring 502, a damping cylinder 503 and a damping rod 504. The spring seat 501 is fixedly installed inside the limiting groove 104 and at the corresponding position of the inner wall of the limiting plate 4. The limiting spring 502 is fixedly installed between the spring seats 501.

[0045] A damping cylinder 503 is arranged inside the limit spring 502. Through holes are opened on both side surfaces of the damping cylinder 503 and damping rods 504 are movably installed inside. The other ends of the two groups of damping rods 504 are connected to the spring seat 501.

[0046] When the fixing part 102 is connected to the mounting part 101, the contact end of the end face of the limit plate 4 can contact the surface of the power cable. Since it is made of silicone material, the surface sheath will not be damaged during the contact with the power cable. After the limit plate 4 is in contact, the limit spring 502 inside the bottom limit assembly 5 can play a good limiting operation. In order to cope with the deformation of the limit spring 502 itself, the present application sets a damping cylinder 503 and a damping rod 504, which can effectively reduce the deformation of the limit spring 502 itself.

[0047] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An online monitoring device for power cable status, comprising a device body (1), a gripping portion (2) being arranged on the top of the device body (1), and a placing seat (3) being arranged on the bottom of the device body (1), characterized in that: The device body (1) is specifically composed of a mounting component (101) and a fixing component (102); A limit assembly (5), the limit assembly (5) being fixedly mounted on the inner wall of the device body (1); A limit plate (4), wherein the limit plate (4) is fixedly mounted on one end of the limit assembly (5); A wiring portion (6), the wiring portion (6) being fixedly mounted on one side of an outer wall of the mounting member (101); An infrared thermal imaging detection probe and a temperature sensor are fixedly mounted on the inner side wall of the fixing member (102) in sequence; The wiring portion (6) is connected to an external power supply end and a control end via a wire, and the infrared thermal imaging detection probe and the temperature sensor are electrically connected to the wiring portion (6) via the wire.

2. The power cable status online monitoring device according to claim 1 is characterized in that: The top of the mounting member (101) is fixedly mounted with a gripping portion (2) by means of fixing bolts. The fixing member (102) is fixedly mounted on the end surface of the placement seat (3). The mounting member (101) and the fixing member (102) are of the same size and both have a receiving groove (103) therein. The receiving groove (103) is specifically a semicircular groove structure. The front and rear sides of the two groups of receiving grooves (103) are both provided with a limiting groove (104) at a position corresponding to the limiting assembly (5).

3. The online monitoring device for power cable status according to claim 1 is characterized in that: Connecting columns (105) are fixedly mounted on both sides of the bottom of the mounting member (101), and connecting grooves (106) are provided at corresponding positions on both sides of the end surface of the fixing member (102), and the size of the connecting column (105) is consistent with that of the connecting groove (106).

4. The online monitoring device for power cable status according to claim 1 is characterized in that: The gripping portion (2) comprises a gripping groove (201), and the gripping groove (201) is provided on the outer wall of the gripping portion (2) at positions corresponding to five fingers.

5. The online power cable status monitoring device according to claim 1 is characterized in that: The limiting plate (4) is specifically a semicircular arc plate-shaped structure, and its end surface is fixedly connected to a contact end, and the contact end is made of a silicone material.

6. The power cable status online monitoring device according to claim 2 is characterized in that: The limiting assembly (5) comprises a spring seat (501), a limiting spring (502), a damping cylinder (503) and a damping rod (504); the spring seat (501) is fixedly installed inside the limiting groove (104) and at a corresponding position on the inner wall of the limiting plate (4); and the limiting spring (502) is fixedly installed between the spring seats (501); A damping cylinder (503) is arranged inside the limit spring (502), through holes are provided on both side end surfaces of the damping cylinder (503) and damping rods (504) are movably installed inside, and the other ends of the two groups of damping rods (504) are connected to the spring seat (501).

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