Transformer wire clamp

Abstract

The invention discloses a transformer wire clamp, which comprises a wire clamp body, a temperature sensor and an electromagnetic induction power generation module. The wire clamp body is provided with a cable connection hole and an accommodating cavity. The cable connection hole is used for passing a power transmission cable. The temperature sensor is arranged on the wire clamp body and is used for detecting the heating temperature of the wire clamp body. The electromagnetic induction power generation module comprises a closed-loop magnetic conductive part and a coil arranged in the accommodating cavity. The closed-loop magnetic conductive part is arranged around the hole wall of the cable connection hole so that the power transmission cable is passed through the inner circle of the closed-loop magnetic conductive part. The closed-loop magnetic conductive part comprises an induction part, which passes through the coil. The coil is electrically connected to the temperature sensor. The electromagnetic induction power generation module obtains electric energy from the power transmission cable and supplies power to the temperature sensor by utilizing the electromagnetic mutual induction principle. As long as the power transmission cable works, a continuous working electric energy can be provided to the temperature sensor, thereby effectively ensuring the long-term stable operation of the temperature sensor.

Description

Technical Field

[0001] The invention relates to the technical field of transformer wire clamps, and in particular to a transformer wire clamp. Background Art

[0002] The transformer wire clamp will generate abnormal heat during operation, and a temperature sensor needs to be set up for real-time temperature monitoring. In related technologies, the temperature sensor will be equipped with a corresponding power supply. When the power supply is exhausted and cannot be replaced in time, the temperature sensor will stop working and lose temperature detection of the transformer wire clamp, posing a safety hazard. Summary of the invention

[0003] The main purpose of the present invention is to provide a transformer wire clamp, aiming to solve the problem of stable power supply of a temperature sensor.

[0004] To achieve the above object, the present invention provides a transformer clamp, the transformer clamp comprising:

[0005] A wire clamp body, the wire clamp body is made of metal material, and the wire clamp body is provided with a cable connection hole and a receiving cavity, the cable connection hole is used for passing the power transmission cable;

[0006] a temperature sensor, the temperature sensor being disposed on the wire clamp body and used to detect the heating temperature of the wire clamp body; and

[0007] An electromagnetic induction power generation module, the electromagnetic induction power generation module includes a closed-loop magnetic conductive part and a coil arranged in the accommodating cavity, the closed-loop magnetic conductive part is arranged around the hole wall of the cable connection hole so that the power transmission cable is passed through the inner circle of the closed-loop magnetic conductive part, the closed-loop magnetic conductive part includes an induction part, and the induction part passes through the coil; the coil is electrically connected to the temperature sensor.

[0008] Optionally, the length direction of the coil is arranged perpendicular to the extension direction of the cable connection hole.

[0009] Optionally, the induction portion is arranged in a closed loop to independently constitute the closed loop magnetic conductive component.

[0010] Optionally, the sensing part is in a rod shape, and is disposed in the accommodating cavity, with two ends of the sensing part respectively connected to the inner wall of the accommodating cavity, so as to form the closed-loop magnetic conductive part together with the wire clamp body.

[0011] Optionally, the accommodating cavity has an opening, and the opening is covered with an openable and closable cover.

[0012] Optionally, the cover is made of metal material, and the sensing portion has a first end and a second end.

[0013] The first end is fixed to the inner wall of the accommodating cavity, and the second end extends to the opening and abuts against the cover; or,

[0014] The first end is fixed to the cover body, and the second end extends toward the inner wall of the accommodating cavity and abuts against the inner wall of the accommodating cavity.

[0015] Optionally, the first end is integrally formed on an inner wall of the accommodating cavity opposite to the opening; or,

[0016] The first end is provided with an external thread, and an inner wall of the accommodating cavity opposite to the opening is provided with a threaded hole, and the first end is threadedly connected to the threaded hole.

[0017] Optionally, the first end is integrally formed on a side of the cover body facing the accommodating cavity; or,

[0018] The first end is provided with an external thread, a threaded hole is provided on a side of the cover body facing the accommodating cavity, and the first end is threadedly connected to the threaded hole.

[0019] Optionally, the first end is fixed to the inner wall of the accommodating cavity opposite to the opening, and a depression is formed on a side of the cover body facing the accommodating cavity, and when the cover body covers the opening, the second end is inserted into the depression.

[0020] Optionally, the first end is fixedly disposed on a side of the cover body facing the accommodating cavity, an inner wall of the accommodating cavity is concavely provided with a depression, and when the cover body covers the opening, the second end is inserted into the depression.

[0021] The technical solution of the present invention utilizes the electromagnetic mutual induction principle through an electromagnetic induction power generation module to obtain electrical energy from the transmission cable and power the temperature sensor. As long as the transmission cable is transmitting power, it can provide a steady supply of working power for the temperature sensor, effectively ensuring the long-term stable operation of the temperature sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0023] Figure 1 It is a structural schematic diagram of an embodiment of a transformer wire clamp of the present invention;

[0024] Figure 2 for Figure 1 Side cross-sectional view of transformer clamp;

[0025] Figure 3 It is a schematic structural diagram of another embodiment of the transformer clamp of the present invention.

[0026] Description of Figure Numbers:

[0027] Label name Label name 1 Cable clamp body 2 Electromagnetic induction power generation module 11 Cable connection hole 21 Sensing Department 12 Accommodation cavity 22 Coil 13 Cover

[0028] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0031] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0032] The present invention provides a transformer clamp, referring to the attached Figure 1 and attached Figure 2 As shown, the transformer wire clamp includes a wire clamp body 1, a temperature sensor and an electromagnetic induction power generation module 2, wherein the wire clamp body 1 is provided with a cable connection hole 11 and a receiving cavity 12, the cable connection hole 11 is used for the transmission cable to pass through, the temperature sensor is arranged on the wire clamp body 1, and is used to detect the heating temperature of the wire clamp body 1, the electromagnetic induction power generation module 2 includes a closed-loop magnetic conductive part, and a coil 22 arranged in the receiving cavity 12, the closed-loop magnetic conductive part is arranged around the hole wall of the cable connection hole 11, so that the transmission cable is passed through the inner circle of the closed-loop magnetic conductive part, the closed-loop magnetic conductive part includes an induction part 21, and the induction part 21 passes through the coil 22; the coil 22 is electrically connected to the temperature sensor.

[0033] In this way, when alternating current flows through the transmission cable, the closed-loop magnetic conductive part will generate magnetic flux, which flows in the induction part 21, and the coil 22 will generate an induced electromotive force (that is, voltage), so that the temperature sensor is connected to the coil 22 to form a closed loop to form current, so that the temperature sensor is powered on and works. In this way, as long as the transmission cable remains powered, the temperature sensor will also maintain stable operation, wherein the working current of the temperature sensor is greater than or equal to 2A.

[0034] In this embodiment, the monitoring of the heating temperature of the wire clamp body 1 by the temperature sensor is specifically real-time monitoring of the temperature change of the wire clamp body 1 .

[0035] In this embodiment, the wire clamp body 1 is made of metal material, and includes an integrally formed transformer connecting part and a cable clamping part. The cable connecting hole 11 is opened at one end of the cable clamping part away from the transformer connecting part. The cable clamping part is provided with a clamping piece, which passes through the hole wall of the cable connecting hole 11 and extends into the cable connecting hole 11 to clamp the power transmission cable passed through the cable connecting hole 11. The inner wall of the cable connecting hole 11 is concavely provided with a groove, which is arranged opposite to the clamping piece. The temperature sensor is accommodated and limited in the groove. The accommodating cavity 12 is connected to the groove through a wire passing channel. The wire is provided in the wire passing channel. The wire is respectively connected to the coil 22 and the temperature sensor to form a closed loop, so that the coil 22 supplies power to the temperature sensor.

[0036] In one embodiment, the length direction of the coil 22 is arranged perpendicular to the extension direction of the cable connection hole 11. In this way, the coil 22 is effectively guaranteed to generate a higher voltage, and the voltage of the coil 22 is more stable, which can provide a stable power supply for the temperature sensor and has higher reliability.

[0037] In one embodiment, referring to the attached Figure 3 The induction part 21 is arranged in a closed loop to independently constitute a closed loop magnetic conductive part. Specifically, part of the induction part 21 passes through the cavity wall of the accommodating cavity 12 to pass through the coil 22, and the remaining part can be sleeved on the outer wall of the wire clamp body 1 or embedded in the wall of the wire clamp body 1.

[0038] In this embodiment, refer to the attached Figure 1 and attached Figure 2 The sensing part 21 is in a rod shape and is disposed in the accommodating cavity 12 , and both ends of the sensing part 21 are respectively connected to the inner wall of the accommodating cavity 12 to form a closed-loop magnetic conductive part together with the wire clamp body 1 .

[0039] In this way, the wire clamp body 1 itself constitutes a part of the closed-loop magnetic conductive component, making the structure more compact and more practical. At the same time, it also saves manufacturing materials and reduces production costs.

[0040] In this embodiment, the accommodating cavity 12 has an opening, and the opening is covered with an openable and closable cover body 13. In this way, under normal conditions, the cover body 13 covers the opening, so that the accommodating cavity 12 becomes a closed space, which protects the sensing part 21 and the coil 22 and prevents the sensing part 21 and the coil 22 from being damaged or corroded by foreign objects. The staff can also open the cover body 13 to inspect or replace the sensing part 21 or the coil 22 in the accommodating cavity 12, which is very convenient.

[0041] In this embodiment, the cover body 13 has a fixed end hinged to one side of the opening and a movable end rotatable relative to the fixed end. A rotatable rotating button is provided on the outer side of the edge of the movable end of the opening adjacent to the cover body 13. The rotating button is elliptical or waist-shaped, and there is a gap between the edge of the opening. The movable end of the cover body 13 is provided with a through hole adapted to the rotating button. The through hole is elliptical or waist-shaped so that the rotating button can pass through it completely. When the cover body 13 covers the opening, the rotating button completely passes through the through hole of the cover body 13. The movable end of the cover body 13 can be locked by rotating the rotating button, so that the cover body 13 remains in the covered state. When the cover body 13 needs to be opened, the rotating button can be rotated to coincide with the through hole. At this time, the movable end of the cover body 13 can be detached from the rotating button to rotate freely to realize the opening of the cover body 13.

[0042] In this embodiment, the cover body 13 is made of metal material, and the sensing part 21 has a first end and a second end. The first end is fixed to the inner wall of the accommodating cavity 12 opposite to the opening, and the second end is arranged adjacent to the opening. When the cover body 13 covers the opening, the second end abuts against the cover body 13.

[0043] In this embodiment, the cover 13 is made of a metal material with good magnetic conductivity, such as iron, iron-aluminum alloy, etc.

[0044] In this embodiment, when the cover body 13 is opened, the second end of the sensing part 21 is disconnected from the cover body 13. At this time, a closed loop is not formed between the sensing part 21 and the wire clamp body 1, the sensing part 21 has no magnetic flux flow, and the coil 22 does not generate an electromotive force, that is, the coil 22 and the temperature sensor are in a power-off state; when the cover body 13 is closed on the opening, the second end of the sensing part 21 abuts against the cover body 13. At this time, a closed loop is formed between the sensing part 21 and the wire clamp body 1, the sensing part 21 has magnetic flux flow, and the coil 22 generates an electromotive force, that is, the coil 22 and the temperature sensor are in a power-on state.

[0045] In this way, when the staff needs to inspect or replace the induction part 21 or the coil 22, after opening the cover 13, the coil 22 will be powered off synchronously, avoiding the safety hazard of electric shock caused by the staff's misoperation or other situations.

[0046] In one embodiment, the first end of the sensing portion 21 is fixed to the side of the cover 13 facing the accommodating cavity 12, and the second end extends toward the accommodating cavity 12. When the cover 13 covers the opening, the second end abuts against the inner wall of the accommodating cavity 12 opposite to the opening.

[0047] In this embodiment, when the cover body 13 is opened, the sensing part 21 moves with the cover body 13 so that the second end is disconnected from the inner wall of the accommodating cavity 12 opposite to the opening. At this time, a closed loop is not formed between the sensing part 21 and the wire clamp body 1, the sensing part 21 has no magnetic flux flow, and the coil 22 does not generate an electromotive force, that is, the coil 22 and the temperature sensor are in a power-off state; when the cover body 13 is closed on the opening, the sensing part 21 moves with the cover body 13, and the second end of the sensing part 21 abuts against the inner wall of the accommodating cavity 12 opposite to the opening again. At this time, a closed loop is formed between the sensing part 21 and the wire clamp body 1, the sensing part 21 has magnetic flux flow, and the coil 22 generates an electromotive force, that is, the coil 22 and the temperature sensor are in a power-on state.

[0048] In this way, when the staff needs to inspect or replace the sensing part 21 or the coil 22, after opening the cover 13, the coil 22 will be powered off synchronously, avoiding the safety hazard of electric shock caused by misoperation or other situations of the staff. At the same time, the sensing part 21 will be exposed as the cover 13 is opened, so as to facilitate the staff to replace and inspect the sensing part 21.

[0049] In one embodiment, the first end is integrally formed on the inner wall of the accommodating cavity 12 opposite to the opening, so that the connection between the sensing portion 21 and the inner wall of the accommodating cavity 12 opposite to the opening has higher structural strength and higher reliability.

[0050] In another embodiment, an external thread is provided at the first end, and a threaded hole is provided at the inner wall of the accommodating chamber 12 opposite to the opening, and the first end is threadedly connected to the threaded hole. In this way, the sensing part 21 and the inner wall of the accommodating chamber 12 opposite to the opening are detachably connected by means of internal and external threads, which greatly facilitates the staff to replace the sensing part 21.

[0051] In another embodiment, the first end is integrally formed on a side of the cover body 13 facing the accommodating cavity 12 , so that the connection between the sensing portion 21 and the cover body 13 has higher structural strength and higher reliability.

[0052] In another embodiment, an external thread is provided at the first end, and a threaded hole is provided at the side of the cover body 13 facing the accommodating chamber 12, and the first end is threadedly connected to the threaded hole. In this way, the sensing part 21 and the cover body 13 are detachably connected by means of internal and external threads, which provides great convenience for the staff to replace the sensing part 21.

[0053] In one embodiment, with the first end fixed to the inner wall of the accommodating cavity 12 opposite to the opening, a depression is provided on the side of the cover body 13 facing the accommodating cavity 12. When the cover body 13 covers the opening, the second end is inserted into the depression. In this way, the first end of the sensing part 21 can fully abut against the cover body 13, effectively ensuring the stability of the magnetic flux flow of the sensing part 21, so that the coil 22 generates a stable electromotive force, thereby ensuring the stable operation of the temperature sensor.

[0054] In another embodiment, when the first end is fixed to the side of the cover body 13 facing the accommodating chamber 12, the inner wall of the accommodating chamber 12 is recessed, and when the cover body 13 is closed on the opening, the second end is inserted into the recess, so that the first end of the sensing part 21 can fully abut against the inner wall of the accommodating chamber 12 opposite to the opening, effectively ensuring the stability of the magnetic flux flow of the sensing part 21, so that the coil 22 generates a stable electromotive force, thereby ensuring the stable operation of the temperature sensor.

[0055] In one embodiment, an annular step is recessed on the inner wall of the opening. When the cover 13 is closed on the opening, the edge of the cover 13 fits against the annular step, and the cover 13 is in full contact with the annular step. In this way, the cover 13 can be fully connected to the opening, effectively avoiding the problem that a gap between the cover 13 and the opening prevents the induction part 21 and the wire clamp body 1 from forming a closed circuit and the coil 22 from being energized.

[0056] In one embodiment, a limiting flange is convexly provided on the outer periphery of the second end, and the coil 22 is in limiting contact with the limiting flange. In this way, the limiting flange is used to limit the side of the coil 22 away from the first end, thereby preventing the coil 22 from falling off the sensing part 21. This ensures that the coil 22 remains sleeved on the sensing part 21, thereby improving the reliability of the structure. When the coil 22 needs to be removed from the sensing part 21, the first end of the sensing part 21 is disassembled, and the coil 22 can be taken out from the first end of the sensing part 21.

[0057] The above descriptions are only optional embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A transformer clamp, characterized in that: The transformer clamp comprises: A wire clamp body, wherein the wire clamp body is provided with a cable connection hole and a receiving cavity, wherein the cable connection hole is used for passing a power transmission cable; a temperature sensor, the temperature sensor being disposed on the wire clamp body and used to detect the heating temperature of the wire clamp body; and An electromagnetic induction power generation module, the electromagnetic induction power generation module comprising a closed-loop magnetic conductive member and a coil arranged in the accommodating cavity, the closed-loop magnetic conductive member is arranged around the hole wall of the cable connection hole so that the power transmission cable is passed through the inner circle of the closed-loop magnetic conductive member, the closed-loop magnetic conductive member comprises an induction part, and the induction part passes through the coil; the coil is electrically connected to the temperature sensor, and the length direction of the coil is arranged perpendicular to the extension direction of the cable connection hole; The induction part is in the shape of a rod, and is disposed in the accommodating cavity, and both ends of the induction part are respectively connected to the inner wall of the accommodating cavity, so as to form the closed-loop magnetic conductive part together with the wire clamp body.

2. The transformer clamp according to claim 1, characterized in that: The accommodating cavity has an opening, and the opening is covered with an openable and closable cover body.

3. The transformer clamp according to claim 2, characterized in that: The cover is made of metal material, and the sensing part has a first end and a second end. The first end is fixed to the inner wall of the accommodating cavity, and the second end extends to the opening and abuts against the cover; or, The first end is fixed to the cover body, and the second end extends toward the inner wall of the accommodating cavity and abuts against the inner wall of the accommodating cavity.

4. The transformer clamp according to claim 3, characterized in that: The first end is integrally formed on the inner wall of the accommodating cavity opposite to the opening; or, The first end is provided with an external thread, and an inner wall of the accommodating cavity opposite to the opening is provided with a threaded hole, and the first end is threadedly connected to the threaded hole.

5. The transformer clamp according to claim 3, characterized in that: The first end is integrally formed on a side of the cover body facing the accommodating cavity; or, The first end is provided with an external thread, a threaded hole is provided on a side of the cover body facing the accommodating cavity, and the first end is threadedly connected to the threaded hole.

6. The transformer clamp according to claim 3, characterized in that: The first end is fixedly arranged on the inner wall of the accommodating cavity opposite to the opening, and a depression is formed on a side of the cover body facing the accommodating cavity. When the cover body covers the opening, the second end is inserted into the depression.

7. The transformer clamp according to claim 3, characterized in that: The first end is fixedly arranged on a side of the cover body facing the accommodating cavity, and a depression is concavely arranged on the inner wall of the accommodating cavity. When the cover body covers the opening, the second end is inserted into the depression.

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