Wire contact type temperature measurement sensor

Abstract

The utility model relates to a wire contact type temperature measurement sensor, which relates to the field of power transmission line on-line monitoring and comprises a temperature measurement sensor body and a clamping structure, one end of the temperature measurement sensor body is connected with one end of the clamping structure, and the temperature measurement sensor body is directly clamped on a wire through the clamping structure. The clamping structure comprises a mounting base, a first clamp and a second clamp, the temperature measurement sensor body is mounted on the mounting base, and the first clamp and the second clamp are symmetrically mounted on the two sides of the mounting base respectively. The temperature of the wire can be detected in a direct contact mode, and the clamping and holding effect is better.

Description

Technical Field

[0001] The present application relates to the field of online monitoring of power transmission lines, and in particular to a wire contact temperature measurement sensor. Background Art

[0002] With the continuous growth of the national economy, urban and rural electricity consumption has soared, and high-load operation of lines has become more and more common. The conductors and connecting fittings of the transmission lines are seriously heated. When the conductors and fittings are running at high temperatures, they will slowly anneal and age, causing their strength loss. The strength loss increases with the increase of temperature and time. Intermittent heating has a cumulative effect on the strength loss. Wire disconnection accidents caused by poor wire connection and excessive temperature of connecting fittings occur from time to time. Wire disconnection accidents have become the most harmful type of accidents in power grids due to their large range of damage. Therefore, in order to solve this problem in the prior art, temperature sensors are usually installed on connecting fittings and conductors to monitor the temperature in real time.

[0003] Traditional line temperature sensors use right-angle mounting parts, and the two ends of the right-angle mounting parts are fixed on the fixing bolts of the tension clamp drainage plate. Due to its shape, the right-angle mounting parts cannot be installed on other monitoring points that are prone to heat, such as conductors. In addition, when installing the line temperature sensor, the installation process is complicated. At the same time, the original bolts of the tension clamp drainage plate must be removed after a power outage and then tightened. This can easily cause mechanical failures such as loose connections on the hardware, or even destructive consequences. It can no longer meet the needs of transmission line operation, maintenance, inspection and monitoring.

[0004] For related technologies, please refer to the Chinese patent with announcement number CN209525015U, which discloses a temperature rise monitoring device for high-voltage live-installed wire clamps, including a temperature probe, a bracket, a movable pressure plate, a spring and an anti-drop block. The temperature probe is arranged on a right-angle bracket, one end of the right-angle bracket is connected to the movable pressure plate, and the other end is connected to the anti-drop block. The movable pressure plate and the bracket are connected by a fixed shaft, and the spring is arranged between the bracket and the movable pressure plate. This technology realizes the live installation of the temperature sensor without changing the electrical connection of the wire clamp and without power outage of the line, providing a new iterative technology for traditional indirect detection and power-off installation. In this technology, the wire is clamped and held tightly by the movable pressure plate to press the wire clamp between the bracket and the movable pressure plate, so that the monitoring tool is fixed on the wire clamp. In order to further prevent the temperature sensor from sliding and falling off laterally, the design of the anti-drop block is added. The clamping and anti-drop stability of the wire clamp in this technology are poor, and the installation and fixing structure is complex, which increases the installation time to a certain extent.

[0005] In view of the above-mentioned related technologies, a new temperature sensor for live installation is proposed to solve the technical problems of complex installation and fixing structure and poor stability. Utility Model Content

[0006] In order to provide a new temperature sensor for live installation and solve the technical problems of complex installation and fixing structure and poor stability, the present application provides a wire contact temperature sensor.

[0007] The present application provides a wire contact temperature measurement sensor, which adopts the following technical solution:

[0008] A wire contact temperature sensor comprises a temperature sensor body and a clamping structure, wherein one end of the temperature sensor body is connected to one end of the clamping structure, the temperature sensor body is directly clamped on the wire through the clamping structure, the clamping structure comprises a mounting base, a first clamp and a second clamp, the temperature sensor body is mounted on the mounting base, and the first clamp and the second clamp are symmetrically mounted on both sides of the mounting base.

[0009] By adopting the above technical solution, the mounting base of the clamping structure can provide installation for the temperature sensor body and provide a connector for the first clamp and the second clamp. The temperature sensor body is directly clamped on the wire by the symmetrically installed first clamp and the second clamp to perform direct contact temperature measurement on the wire.

[0010] Optionally, when the wire contact temperature sensor is in the installation state, the first clamp at one end away from the mounting base and the second clamp at one end away from the mounting base are away from each other and are in an open state; when the wire contact temperature sensor is in the detection state, the first clamp at one end away from the mounting base and the second clamp at one end away from the mounting base are close to each other and are in a hugging state.

[0011] By adopting the above technical solution, the open posture of the first clamp and the second clamp, that is, both are in a horizontal state, provides conditions for the temperature sensor body to be installed on the wire, and the clamping posture of the first clamp and the second clamp can tightly clamp the wire after contacting it, thereby preventing the temperature sensor body from falling off the wire.

[0012] Optionally, a first rotating plate and a first torsion spring are provided on the first clamp, one end of the first rotating plate is rotatably connected to the mounting base, and the first clamp is clamped relative to the wire through the torsion of the first torsion spring.

[0013] By adopting the above technical solution, the first torsion spring can provide all rotating parts of the first clamp with clamping force toward the wire, so that the first clamp naturally tends to clamp toward the wire when free from external force. The first rotating plate clamps the wire under the action of the first torsion spring.

[0014] Optionally, the first fixture further includes a first connecting plate, one end of which is rotatably connected to an end of the first rotating plate away from the mounting base.

[0015] By adopting the above technical solution, the first connecting plate and the first rotating plate work together to clamp the wire more stably. The first connecting plate and the first rotating plate are rotationally connected, and under the action of the first torsion spring (that is, a first torsion spring is added to the rotational connection between the first connecting plate and the first rotating plate at the same time), a larger surrounding clamp is formed on the outer side wall of the wire, thereby increasing the clamping stability of the first clamp.

[0016] Optionally, the first connecting plate is provided with a first limiting notch penetrating in the length direction.

[0017] By adopting the above technical solution, the first limiting groove has four main functions: first, it provides a rotation angle limit for the first rotating plate relative to the first connecting plate; second, it provides a rotation angle limit for the first extension plate relative to the first connecting plate; third, it provides a torque limiting installation for the first torsion spring at the rotation connection between the first connecting plate and the first rotating plate on the first clamp; fourth, it provides a torque limiting installation for the first torsion spring at the rotation connection between the first connecting plate and the first extension plate on the first clamp.

[0018] Optionally, the first clamp further includes a first extension plate, one end of which is rotatably connected to an end of the first connecting plate away from the first rotating plate.

[0019] By adopting the above technical solution, the addition of the first extension plate further increases the stability of the surrounding clamping of the first clamp on the outer side wall of the wire.

[0020] Optionally, the second clamp is provided with a second rotating plate and a second torsion spring, one end of the second rotating plate is rotatably connected to the mounting base, and the second clamp is clamped relative to the wire through the torsion of the second torsion spring.

[0021] By adopting the above technical solution, the second torsion spring can provide a clamping force to all rotating parts of the second clamp toward the wire, so that the second clamp naturally tends to clamp toward the wire when free from external force. The second rotating plate clamps the wire under the action of the second torsion spring.

[0022] Optionally, the second fixture further includes a second connecting plate, one end of which is rotatably connected to an end of the second rotating plate away from the mounting base.

[0023] By adopting the above technical solution, the second connecting plate and the second rotating plate work together to clamp the wire more stably. The second connecting plate and the second rotating plate are rotationally connected, and under the action of the second torsion spring (that is, a second torsion spring is added to the rotational connection between the second connecting plate and the second rotating plate at the same time), a larger surrounding clamp is formed on the outer side wall of the wire, thereby increasing the clamping stability of the second clamp.

[0024] Optionally, the second connecting plate is provided with a second limiting notch penetrating in the length direction.

[0025] By adopting the above technical solution, the second limiting groove has four main functions: first, it provides a rotation angle limit for the second rotating plate relative to the second connecting plate; second, it provides a rotation angle limit for the second extension plate relative to the second connecting plate; third, it provides a torque limiting installation for the second torsion spring at the rotation connection between the second connecting plate and the second rotating plate on the second clamp; fourth, it provides a torque limiting installation for the second torsion spring at the rotation connection between the second connecting plate and the second extension plate on the second clamp.

[0026] Optionally, the second clamp further includes a second extension plate, one end of which is rotatably connected to an end of the second connecting plate away from the second rotating plate.

[0027] By adopting the above technical solution, the addition of the second extension plate further increases the stability of the surrounding clamping of the second clamp on the outer side wall of the wire.

[0028] In summary, the present application includes at least one of the following beneficial technical effects:

[0029] 1. It can be installed with power on, the installation and fixing structure is relatively simple, and the stability of clamping and fixing is relatively good;

[0030] 2. The mounting base of the clamping structure can provide installation for the temperature sensor body and provide a connector for the first clamp and the second clamp. The temperature sensor body is directly clamped on the wire by the symmetrically installed first clamp and the second clamp to perform direct contact temperature measurement on the wire;

[0031] 3. The open posture of the first clamp and the second clamp, that is, both are in a horizontal state, provides conditions for the temperature sensor body to be installed on the wire. The clamping posture of the first clamp and the second clamp can well hold the wire tightly after contacting it, thereby preventing the temperature sensor body from falling off the wire;

[0032] 4. The length structure design of the first clamp and the second clamp can be designed in different combinations according to the clamping stability requirements of different wires.

[0033] 5. The first clamp and the second clamp adopt a coordinated structure of a torsion spring, a limit notch, a rotation connection, and a multi-section length structure, which can better increase the fit and tightness of the wire and improve the stability of the clamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall structure of a wire contact temperature sensor.

[0035] Figure 2 This is a state diagram of the wire contact temperature sensor hugging the wire in a hugging state.

[0036] Figure 3 This is a state diagram of the wire contact temperature sensor being limited and fixed on the mounting mechanism in an open state.

[0037] Figure 4 is a cross-sectional view of the mounting mechanism.

[0038] Figure 5 It is a type diagram of the first torsion spring or the second torsion spring in the present technical solution.

[0039] Explanation of the accompanying drawings: 1. Temperature sensor body; 2. Mounting base; 3. First clamp; 4. Second clamp; 5. First rotating plate; 6. First torsion spring; 7. First connecting plate; 8. First extension plate; 9. First limiting slot; 10. Second rotating plate; 11. Second torsion spring; 12. Second connecting plate; 13. Second extension plate; 14. Second limiting slot; 15. Mounting slot; 16. Universal connector; 17. Connector; 18. Mounting seat; 19. Limit mounting bracket; 20. Column mounting seat; 21. Retaining ring; 22. Baffle; 23. Spring; 24. Limiting slot. DETAILED DESCRIPTION

[0040] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0041] The embodiment of the present application discloses a wire contact temperature measurement sensor.

[0042] Reference Figure 1A wire contact temperature sensor comprises a temperature sensor body 1 and a clamping structure, one end of the temperature sensor body 1 is connected to one end of the clamping structure, the temperature sensor body 1 is directly clamped on the wire through the clamping structure, the clamping structure comprises a mounting base 2, a first clamp 3 and a second clamp 4, the temperature sensor body 1 is mounted on the mounting base 2, and the first clamp 3 and the second clamp 4 are symmetrically mounted on both sides of the mounting base 2. Two mounting notches 15 are extended at the connection between the mounting base 2 and the first clamp 3 and the second clamp 4, one mounting notch 15 corresponds to the installation of the first clamp 3, and the other mounting notch 15 corresponds to the installation of the second clamp 4. In order to ensure that the first clamp 3 and the second clamp 4 can have a good opening and holding posture relative to the mounting base 2, a first torsion spring 6 is provided at the rotation connection between the first clamp 3 and the mounting notch 15 of the mounting base 2, and a second torsion spring 11 is provided at the rotation connection between the second clamp 4 and the mounting notch 15 of the mounting base 2. In the technical solution of the present application, the rotation connection method can be a pin connection method. The opening angle of the first clamp 3 and the second clamp 4 can also be limited by passing through the installation slot 15. The first rotating plate 5 on the first clamp 3 extends into the corresponding installation slot 15, and the first torsion spring 6 is also embedded in the corresponding installation slot 15, and the pin passes through the installation slot 15, the first torsion spring 6, and the first rotating plate 5 respectively. The first torsion spring 6 at the subsequent rotating connection is installed in the same way. For the specific selection of the first torsion spring 6, please refer to the attached Figure 5 The structure shown.

[0043] Reference Figure 2 and Figure 3 When the wire contact temperature sensor is in the installation state, the first clamp 3 at one end away from the mounting base 2 and the second clamp 4 at one end away from the mounting base 2 are away from each other and are in an open state; when the wire contact temperature sensor is in the detection state, the first clamp 3 at one end away from the mounting base 2 and the second clamp 4 at one end away from the mounting base 2 are close to each other and are in a hugging state.

[0044] 2, 3 and 4, the open posture mainly refers to that the first clamp 3 and the second clamp 4 are respectively in a horizontal state, or close to a horizontal state, and the first clamp 3 and the second clamp 4 are limited and fixed on the limit mounting frame 19 of the mounting structure. At this time, the wire contact temperature sensor can be lifted and raised with the help of the matching mounting structure, close to the surface of the wire and the hardware, and continue to rise. Under the action force of the rise and the reaction force of the resistance of the wire and the hardware, the mounting base 2 of the wire contact temperature sensor is pressed down inside the mounting mechanism (column mounting seat 20), providing deformation space for the first clamp 3 and the second clamp 4 to hold tightly. The first clamp 3 and the second clamp 4 are deformed from the limit slot 24 of the mounting structure and gradually detach from the limit slot 24, thereby realizing the first clamp 3 and the second clamp 4 holding tightly.

[0045] The first clamp 3 is provided with a first rotating plate 5 and a first torsion spring 6 . One end of the first rotating plate 5 is rotatably connected to the mounting base 2 . The first clamp 3 is clamped relative to the wire by the torsion of the first torsion spring 6 .

[0046] The first torsion spring 6 can provide a clamping force to all rotating parts of the first clamp 3 in the direction of the wire, so that the first clamp 3 will naturally tend to clamp in the direction of the wire when it is free from external force. The "external force" mentioned in this application refers to the limit opening of the installation mechanism. The first rotating plate 5 clamps the wire under the action of the first torsion spring 6. The "rotating parts" include the first rotating plate 5, the first connecting plate 7 and the first extension plate 8. Specifically, a first torsion spring 6 is installed at the rotational connection between one end of the first rotating plate 5 and one end of the first connecting plate 7, and a first torsion spring 6 is installed at the rotational connection between the other end of the first connecting plate 7 and one end of the first extension plate 8.

[0047] The first fixture 3 further includes a first connecting plate 7 , one end of which is rotatably connected to an end of the first rotating plate 5 away from the mounting base 2 .

[0048] The first connecting plate 7 is provided with a first limiting notch 9 penetrating in the length direction.

[0049] On the first clamp 3, each component is connected in a rotating manner, and "each component" includes one end of the first rotating plate 5 and one end of the first connecting plate 7, and the other end of the first connecting plate 7 and one end of the first extension plate 8. The rotating connection is also applicable to one end of the first clamp 3 and the mounting base 2. In the open state, the first clamp 3 is limited by the first limiting notch 9 and the mounting notch 15. Further, while limiting the rotation angle, a compressive force is applied to the first torsion spring 6. This helps the first torsion spring 6 at each rotating connection to reset, and the first torsion spring 6 drives the rotating component at the corresponding rotating connection to rotate toward the direction of the wire, that is, the first clamp 3 is clamped.

[0050] The first fixture 3 further includes a first extension plate 8 , one end of which is rotatably connected to an end of the first connecting plate 7 away from the first rotating plate 5 .

[0051] In the technical solution of the present application, the first rotating plate 5 is rotatably connected in the mounting notch 15 of the mounting base 2, and cooperates with the reset force of the first torsion spring 6 to achieve the most basic clamping and holding effect on the wire; in order to further increase the stability of the clamping and holding, the first connecting plate 7 is added, which is equivalent to not only increasing the length of the first clamp 3 but also increasing the degree of fit of the clamping and bending. In order to further increase the stability of the clamping and holding, the first extension plate 8 is added, which is equivalent to increasing the length of the first clamp 3 again and increasing the degree of fit of the clamping and bending again. In order to ensure the feasibility of the above technical purpose, the first clamp 3 is opened when needed, and when the external force is eliminated, it can clamp the wire by itself. The cooperation between the first torsion spring 6 and the first limiting notch 9 is particularly important.

[0052] The second clamp 4 is provided with a second rotating plate 10 and a second torsion spring 11 . One end of the second rotating plate 10 is rotatably connected to the mounting base 2 . The second clamp 4 is clamped relative to the wire by the torsion of the second torsion spring 11 .

[0053] The second fixture 4 further includes a second connecting plate 12 , one end of which is rotatably connected to an end of the second rotating plate 10 away from the mounting base 2 .

[0054] The second connecting plate 12 is provided with a second limiting notch 14 penetrating in the length direction.

[0055] The second fixture 4 further includes a second extension plate 13 , one end of which is rotatably connected to an end of the second connecting plate 12 away from the second rotating plate 10 .

[0056] The principle of the second clamp 4 is the same as that of the first clamp 3, except that the structural lengths of the two can be completely the same or not. Specifically, from the perspective of the length extension connector: when the first clamp 3 includes the first rotating plate 5, the second clamp 4 can include the second rotating plate 10, or the second rotating plate 10 and the second connecting plate 12, or the second rotating plate 10, the second connecting plate 12 and the second extension plate 13. When the first clamp 3 includes the first rotating plate 5 and the first connecting plate 7, the second clamp 4 can include the second rotating plate 10, or the second rotating plate 10 and the second connecting plate 12, or the second rotating plate 10, the second connecting plate 12 and the second extension plate 13. When the first clamp 3 includes the first rotating plate 5, the first connecting plate 7 and the first extension plate 8, the second clamp 4 can include the second rotating plate 10, or the second rotating plate 10 and the second connecting plate 12, or the second rotating plate 10, the second connecting plate 12 and the second extension plate 13. Of course, according to the size of the hardware to be clamped, the technical solution of the present application can also be extended in length under the principle of rotation connection-torsion spring reset clamping, that is, it is not limited to the three-component combination of the first rotating plate 5, the first connecting plate 7 and the first extension plate 8 of the first clamp 3 in the present application, and so on. Figure 1 1 and 2 show that the first clamp 3 includes a first rotating plate 5, a first connecting plate 7 and a first extension plate 8, and the second clamp 4 includes a second rotating plate 10, a second connecting plate 12 and a second extension plate 13 in a structural length form.

[0057] In order to better help those skilled in the art understand the installation process of the wire contact temperature sensor in the present application technology, the installation mechanism is further explained. The installation mechanism includes a universal connector 16, a connector 17, a mounting seat 18 and a limit mounting frame 19. One end of the connector 17 is connected to the universal connector 16, and the other end of the connector 17 is rotatably connected to one end of the mounting seat 18. The other end of the mounting seat 18 is detachably connected to the limit mounting frame 19. The limit mounting frame 19 is far away from the mounting seat 18 to limit the wire temperature sensor. Specifically, the limit mounting frame 19 includes a columnar mounting seat 20, a limit block, a baffle 22 and a spring 23. The columnar mounting seat 20 is provided with a cavity with two ends passing through it. The baffle 22 and the spring 23 are installed in the cavity. One end of the spring 23 abuts against the mounting seat 18, and the other end of the spring 23 abuts against the baffle 22. The limit block is connected to the end of the columnar mounting seat 20 away from the mounting seat 18. A snap ring 21 extends from one end of the cavity near the baffle 22, and the snap ring 21 limits the installation of the baffle 22 and limits the end point of the translation of the baffle 22 in the cavity along one end of the limit block. There are two limit blocks, which are arranged opposite to each other, and a limit slot 24 is provided at one end of the limit block away from the columnar mounting seat 20. The principle of the installation mechanism: the lower end of the temperature sensor body 1 is inserted into the cavity of the columnar mounting seat 20, the baffle 22 is pushed down, the spring 23 is compressed, the first clamp 3 and the second clamp 4 are opened, and are clamped in the relatively arranged limit slot 24, so as to realize the opening state of the wire contact temperature sensor, that is, enter the installation state. The wire contact temperature sensor is lifted to the wire position, and the relative position of the wire contact temperature sensor and the wire is adjusted by the relative rotation of the connecting piece 17 and the mounting seat 18 until the first clamp 3 and the second clamp 4 are separated so that the wire can be normally held. In this position, continue to lift the wire contact temperature sensor to contact the outer surface of the wire, continue to push down the baffle 22 in the cavity, the spring 23 continues to be compressed in the cavity, and the first clamp 3 and the second clamp 4 have space to deform in the limit slot 24. Under the reset action of the first torsion spring 6, the first clamp 3 is driven to rotate toward the clamping posture, and under the reset action of the second torsion spring 11, the second clamp 4 is driven to deform and transition toward the clamping posture. When the first clamp 3 and the second clamp 4 are completely disengaged from the limit slot 24, the first clamp 3 and the second clamp 4 quickly clamp the wire.

[0058] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A wire contact temperature sensor, comprising a temperature sensor body (1) and a clamping structure, wherein one end of the temperature sensor body (1) is connected to one end of the clamping structure, and characterized in that: The temperature sensor body (1) is directly clamped on the wire by a clamping structure, wherein the clamping structure comprises a mounting base (2), a first clamp (3) and a second clamp (4); the temperature sensor body (1) is mounted on the mounting base (2), and the first clamp (3) and the second clamp (4) are symmetrically mounted on both sides of the mounting base (2).

2. A wire contact temperature sensor according to claim 1, characterized in that: When the wire contact temperature sensor is in an installation state, the end of the first clamp (3) away from the installation base (2) and the end of the second clamp (4) away from the installation base (2) are away from each other and are in an open state; when the wire contact temperature sensor is in a detection state, the end of the first clamp (3) away from the installation base (2) and the end of the second clamp (4) away from the installation base (2) are close to each other and are in a hugging state.

3. A wire contact temperature sensor according to claim 1 or 2, characterized in that: The first clamp (3) is provided with a first rotating plate (5) and a first torsion spring (6); one end of the first rotating plate (5) is rotatably connected to the mounting base (2); and the first clamp (3) is clamped relative to the conductor by the torsion force of the first torsion spring (6).

4. A wire contact temperature sensor according to claim 3, characterized in that: The first clamp (3) further comprises a first connecting plate (7), one end of the first connecting plate (7) being rotatably connected to an end of the first rotating plate (5) away from the mounting base (2).

5. The wire contact temperature sensor according to claim 4, characterized in that: The first connecting plate (7) is provided with a first limiting notch (9) penetrating in the length direction.

6. The wire contact temperature sensor according to claim 5, characterized in that: The first clamp (3) further comprises a first extension plate (8), one end of the first extension plate (8) being rotatably connected to an end of the first connecting plate (7) away from the first rotating plate (5).

7. A wire contact temperature sensor according to claim 1 or 2, characterized in that: The second clamp (4) is provided with a second rotating plate (10) and a second torsion spring (11); one end of the second rotating plate (10) is rotatably connected to the mounting base (2); and the second clamp (4) is clamped relative to the conductor by the torsion force of the second torsion spring (11).

8. The wire contact temperature sensor according to claim 7, characterized in that: The second clamp (4) further comprises a second connecting plate (12), one end of the second connecting plate (12) being rotatably connected to an end of the second rotating plate (10) away from the mounting base (2).

9. The wire contact temperature sensor according to claim 8, characterized in that: The second connecting plate (12) is provided with a second limiting notch (14) penetrating in the length direction.

10. The wire contact temperature sensor according to claim 9, characterized in that: The second clamp (4) further comprises a second extension plate (13), one end of the second extension plate (13) being rotatably connected to an end of the second connecting plate (12) away from the second rotating plate (10).

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