Overtemperature warning parallel groove clamp

Abstract

The invention discloses an overtemperature warning parallel groove clamp. The overtemperature warning parallel groove clamp comprises a clamp shell, a fastener, a locking bolt and an alarm unit, the wire clamp shell and the fastener are fixedly connected through a locking bolt, and a wire clamping groove is formed between the wire clamp shell and the fastener; alarm units are arranged on the two sides of the locking bolt, cavities are formed in the alarm units, indicating rods are arranged in the cavities, positioning protrusions are arranged on the outer diameters, away from ports of the cavities, of the indicating rods, and reset springs are arranged between the indicating rods and the cavities; a deformation cavity is formed in the cavity, a temperature sensing deformation piece and an elastic positioning piece are arranged in the deformation cavity, one end of the elastic positioning piece is fixedly connected with the temperature sensing deformation piece, and the other end of the elastic positioning piece abuts against the positioning protrusion. And safety accidents are easily caused.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of power transmission components, and particularly relates to an over-temperature warning parallel groove clamp. BACKGROUND

[0002] The parallel groove clamp is a metal clamp used for power line connection, mainly used for parallel or branch connection between wires, commonly used in overhead lines, power distribution systems and other scenarios.

[0003] In the prior art, when implementing line parallel or branch connection, a clamping fixture with a conductive structure is usually used, a clamping groove is arranged on the clamping wire, and the clamping groove is used to clamp the wire to realize circuit branch connection. However, the existing parallel groove clamp has technical defects in use, which are as follows: 1. After installation, there is no conductive warning function. Since the parallel groove clamp is a short-circuit prone area, but after short-circuit, it cannot be detected in time, which easily leads to safety accidents; 2. If the product is not used in time after leaving the factory, the wire clamping area is easy to oxidize and form an insulating layer or a high resistance layer, which affects the conductive efficiency.

[0004] Therefore, it is urgent to design an over-temperature warning parallel groove clamp to solve the above problems. SUMMARY

[0005] The present application aims to provide an over-temperature warning parallel groove clamp, which has the advantages of timely warning of temperature exceeding the standard, and solves the problem of not being able to detect in time after short-circuit, which easily leads to safety accidents.

[0006] To achieve the above-mentioned purpose, the technical scheme of the over-temperature warning parallel groove clamp of the present application is as follows: An over-temperature warning parallel groove clamp comprises a clamp shell, a fastener, a locking bolt and an alarm unit. The clamp shell and the fastener are fixedly connected by the locking bolt, and a wire clamping groove is arranged between the clamp shell and the fastener. The alarm unit is arranged on both sides of the locking bolt, the alarm unit is internally provided with a cavity, the cavity is internally provided with an indicating rod, a positioning protrusion is arranged on the outer diameter of the end of the indicating rod away from the cavity port, and a return spring is arranged between the indicating rod and the cavity. The cavity is internally provided with a deformation cavity, the deformation cavity is internally provided with a temperature-sensitive deformation sheet and an elastic positioning piece, one end of the elastic positioning piece is fixedly connected with the temperature-sensitive deformation sheet, and the other end of the elastic positioning piece abuts against the positioning protrusion.

[0007] Further, the temperature-sensitive deformation sheets in the alarm units arranged on both sides of the locking bolt have different heat bending thresholds and are divided into high-temperature sections and low-temperature sections.

[0008] Further, the low-temperature section has a heat bending threshold of 75-80 DEG C, and the high-temperature section has a heat bending threshold of 95-100 DEG C.

[0009] Further, a limiting block is fixedly arranged at the cavity port, a limiting protrusion is arranged on the outer diameter of the indicating rod close to the cavity port, the limiting block cooperates with the limiting protrusion to prevent the indicating rod from being separated from the cavity.

[0010] Further, a light-reflecting area is arranged on the outer diameter of the indicating rod close to the limiting block, the light-reflecting area adopts a high-brightness color and is combined with a light-reflecting material.

[0011] Further, a temperature-conducting hole is arranged between the deforming cavity and the wire clamping groove to facilitate the conduction of the temperature in the wire clamping groove area to the deforming cavity.

[0012] Further, a sealing hole is arranged on the fastener, a temperature sensor is arranged in the sealing hole, a heat-conducting hole is arranged between the temperature sensor and the wire clamping groove, a sealing cap is arranged on the upper portion of the sealing hole, and the diameter of the top of the sealing cap is wider than that of the sealing hole.

[0013] Further, the over-temperature warning and wire clamp further comprises an alarm, a conducting hole is arranged in the inside of the sealing cap, and the conducting hole is used for connecting the temperature sensor and the alarm.

[0014] Further, the inside of the wire clamping groove is arranged with a grid-shaped conductive groove with a depth of 0.5-1 mm.

[0015] Further, a bottom sealing layer is arranged on the wire clamping groove side of the wire clamping groove shell, and a top sealing layer is arranged on the fastener side of the wire clamping groove, and the top sealing layer and the bottom sealing layer are configured to be peelable.

[0016] The over-temperature warning and wire clamp has the following advantages: 1. The high-temperature section temperature threshold and the low-temperature section temperature threshold are graded to realize step-by-step alarm, and the severity of the fault can be quickly judged by the staff; 2. The light-reflecting area cooperates with the temperature sensor to realize multiple warning safeguards to meet the needs of on-site direct warning and remote monitoring; 3. The indicating rod can be reused to avoid component waste, and the design is economical and environmentally friendly, and the maintenance cost is reduced; 4. The temperature-conducting hole and the conductive groove improve the heat conduction efficiency and the conductive reliability, and the storage oxidation problem is solved by arranging the bottom sealing layer and the top sealing layer. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is one of the structure schematic diagrams of the over-temperature warning and wire clamp. Figure 2 Figure 2 is a schematic view of the over-temperature warning and trench clamp structure of the present application; Figure 3 Figure 3 is a schematic view of the over-temperature warning and trench clamp structure of the present application; Figure 4 Figure 4 is a schematic view of the over-temperature warning and trench clamp structure of the present application; Figure 1 Figure 5 is a partial enlarged view of the over-temperature warning and trench clamp structure of the present application.

[0018] Marked description in the figure: 1, clamp shell; 2, fastener; 201, sealing hole; 3, locking bolt; 4, alarm unit; 401, cavity; 402, indicating rod; 403, positioning protrusion; 404, reset spring; 405, deformation cavity; 406, temperature sensing deformation piece; 407, elastic positioning piece; 408, limiting block; 409, limiting protrusion; 410, reflective area; 411, top protrusion; 412, bottom protrusion; 5, wire clamping groove; 501, conductive groove; 502, bottom sealing layer; 503, top sealing layer; 6, temperature guide hole; 7, temperature sensor; 8, heat conduction hole; 9, sealing cap; 10, conduction hole. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0020] Those skilled in the art can understand that although some embodiments herein include certain features included in other embodiments rather than other features, the combination of features of different embodiments means to be within the scope of the present application and form different embodiments. For example, in the claims, any one of the claimed embodiments can be used in any combination.

[0021] The following embodiments of the present application will be described with reference to the drawings. Figures 1 to 4 An over-temperature warning and trench clamp of the present application is described, which comprises a clamp shell 1, a fastener 2, a locking bolt 3 and an alarm unit 4; The clamp shell 1 and the fastener 2 are fixedly connected by the locking bolt 3, and a wire clamping groove 5 is arranged between the clamp shell 1 and the fastener 2; The alarm unit 4 is arranged on both sides of the locking bolt 3, the alarm unit 4 is internally provided with a cavity 401, the cavity 401 is internally provided with an indicating rod 402, the indicating rod 402 is provided with a positioning protrusion 403 on the outer diameter of the end away from the cavity 401, and a reset spring 404 is arranged between the indicating rod 402 and the cavity 401. The cavity 401 is internally provided with a deformation cavity 405, the deformation cavity 405 is internally provided with a temperature-sensing deformation sheet 406 and an elastic positioning piece 407, one end of the elastic positioning piece 407 is fixedly connected with the temperature-sensing deformation sheet 406, and the other end of the elastic positioning piece 407 is in abutment with the positioning protrusion 403.

[0022] In the embodiment, the alarm unit 4 is arranged in cooperation with the wire clamping groove 5, so that the temperature in the wire clamping groove 5 can be monitored in real time, and when the temperature in the wire clamping groove 5 exceeds the set value, the indicating rod 402 is popped out to warn the staff.

[0023] Specifically, under normal temperature, the temperature-sensing deformation sheet 406 remains flat, the elastic positioning piece 407 extrudes the positioning protrusion 403 of the indicating rod 402, the indicating rod 402 is locked, after the temperature exceeds the set value, the temperature-sensing deformation sheet 406 is bent, the elastic positioning piece 407 is separated from the positioning protrusion 403, and the indicating rod 402 is popped out of the cavity 401 under the action of the reset spring 404, so as to warn the staff.

[0024] Preferably, the elastic positioning piece 407 is an arc-shaped structure plate.

[0025] Preferably, the bottom of the cavity 401 is provided with a bottom protrusion 412, one end of the indicating rod 402 close to the bottom of the cavity 401 is provided with a top protrusion 411, and the two ends of the reset spring 404 are respectively sleeved on the bottom protrusion 412 and the top protrusion 411.

[0026] Preferably, the temperature-sensing deformation sheet 406 adopts a double-layer structure design.

[0027] Preferably, the wire clamp shell 1 is made of aluminum alloy material.

[0028] Preferably, the fastener 2 is made of stainless steel material.

[0029] Preferably, two wire clamping grooves 5 are arranged between the wire clamp shell 1 and the reinforcing member, and are arranged on both sides of the locking bolt 3.

[0030] Preferably, the deformation cavity 405 is arranged at the middle segment of the cavity 401 and communicates with the cavity 401.

[0031] Further, as Figures 1 to 3As shown, the temperature-sensitive deformation sheet 406 in the alarm unit 4 arranged on both sides of the locking bolt 3 has different heat bending thresholds and is divided into a high-temperature section and a low-temperature section.

[0032] In the embodiment, the high-temperature section and the low-temperature section are arranged to realize stepped alarm at different temperatures.

[0033] Specifically, when the conductive circuit is abnormal, the temperature of the parallel groove clamp reaches the low-temperature section for a certain period of time, and the indicating rod 402 corresponding to the low-temperature section jumps out as a warning; when the conductive circuit continuously appears abnormal, the temperature of the parallel groove clamp reaches the high-temperature section for a certain period of time, and the indicating rod 402 corresponding to the high-temperature section jumps out, realizing stepped alarm, so that the line inspector can quickly judge the severity of the fault.

[0034] Further, the heat bending threshold of the low-temperature section is 75-80℃, and the heat bending threshold of the high-temperature section is 95-100℃.

[0035] Further, as shown in the figure, Figure 2 The indicating rod 402 is arranged with a limiting protrusion 409 on the outer diameter close to the port of the cavity 401, and the limiting block 408 and the limiting protrusion 409 cooperate to prevent the indicating rod 402 from separating from the cavity 401.

[0036] In the embodiment, the limiting block 408 and the limiting protrusion 409 are arranged to limit the position of the indicating rod 402 in the cavity 401, so as to ensure the normal operation of the device and the stable use of the indicating rod 402. After the circuit is overhauled, the indicating rod 402 can be manually reset, avoiding component waste and reducing maintenance cost.

[0037] Further, as shown in the figure, Figure 2 The indicating rod 402 is arranged with a reflecting area 410 on the outer diameter close to the limiting block 408, and the reflecting area 410 adopts a high-brightness color and combines a reflecting material.

[0038] In the embodiment, the reflecting area 410 is arranged to warn the line inspector through the reflecting area 410 after the indicating rod 402 jumps out, and the optical reflection significantly improves the visibility of the warning.

[0039] Preferably, the reflecting area 410 adopts a high-brightness magenta color.

[0040] Further, as shown in the figure, Figure 2 The deformation cavity 405 and the wire clamp groove 5 are arranged with a temperature guide hole 6 to facilitate the temperature conduction from the wire clamp groove 5 to the deformation cavity 405.

[0041] In the embodiment, the temperature of the wire clamp groove 5 is quickly conducted to the temperature-sensing deforming sheet 406 in the deforming cavity 405 by setting the temperature-conducting hole 6, so as to improve the heat conduction efficiency.

[0042] Further, as shown in the figure, Figures 1 to 4 the sealing hole 201 is provided on the fastener 2, the temperature sensor 7 is arranged in the sealing hole 201, the heat-conducting hole 8 is arranged between the temperature sensor 7 and the wire clamp groove 5, the sealing cap 9 is arranged on the upper part of the sealing hole 201, and the top of the sealing cap 9 is wider than the diameter of the sealing hole 201.

[0043] In the embodiment, the temperature of the wire clamp groove 5 is quickly conducted to the temperature sensor 7 by setting the heat-conducting hole 8, so as to capture the heat signal by the temperature sensor 7. The top of the sealing cap 9 is wider than the diameter of the sealing hole 201, so as to cover the periphery of the sealing hole 201 and prevent the water vapor from entering and affecting the performance of the temperature sensor 7.

[0044] Further, as shown in the figure, Figure 4 the over-temperature warning and wire clamp further comprises an alarm, the conductive hole 10 is arranged in the sealing cap 9, and the conductive hole 10 is used for connecting the temperature sensor 7 and the alarm.

[0045] In the embodiment, the temperature signal is transmitted to the alarm by the conductive hole 10 in a wireless or wired manner, a double-alarm mechanism of “mechanical pop-up + electronic signal” is formed, the temperature signal of the temperature sensor 7 is conducted to the alarm, the on-site direct warning and remote monitoring requirements are considered, and the stability of the equipment is improved.

[0046] Preferably, the alarm is an acoustic alarm.

[0047] Further, as shown in the figure, Figure 4 the electrically-conductive groove 501 is arranged in the wire clamp groove 5 in a grid shape, and the depth of the electrically-conductive groove 501 is 0.5mm-1mm.

[0048] In the embodiment, the electrically-conductive performance of the wire and the wire clamp shell 1 is enhanced by setting the electrically-conductive groove 501.

[0049] Specifically, the grid-shaped electrically-conductive groove 501 is arranged, the electrically-conductive paste is filled in the electrically-conductive groove 501 before the electric wire is installed and fixed, the electric wire is covered together with the electrically-conductive paste in the electrically-conductive groove 501 after the electric wire is installed, the contact area with the electric wire is large, the direct current resistance ratio is below 0.9, and the electric conduction efficiency can be effectively improved.

[0050] Preferably, the electrically-conductive paste is a power composite grease.

[0051] Further, as shown in the figure, Figure 4As shown, the wire clamp housing 1 side of the wire clamp 5 is provided with a bottom sealing layer 502, and the fastener 2 side of the wire clamp 5 is provided with a top sealing layer 503, and the top sealing layer 503 and the bottom sealing layer 502 are configured to be peelable.

[0052] In the embodiment, by providing the top sealing layer 503 and the bottom sealing layer 502, the metal is isolated from the outside, and the wire clamp 5 is prevented from being oxidized.

[0053] Specifically, when assembling and grooving the wire clamp, the top sealing layer 503 and the bottom sealing layer 502 are torn to assemble.

[0054] The embodiment is mainly used for the splicing or jumpering of 20KV and below overhead insulated conductors, steel-cored aluminum stranded wires, steel stranded wires and copper stranded wires at non-load-bearing positions.

[0055] The applicable environmental conditions of the embodiment are as follows: an altitude of less than or equal to 2000m; an environmental temperature of-40℃ to-50℃; an annual average temperature of 25℃; a monthly average maximum relative humidity of 90%(25℃); and a pollution level of IV.

[0056] Obviously, the above embodiment of the application is only an example for clearly illustrating the application, and is not intended to limit the embodiments of the application. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. It is not necessary or possible to exhaust all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the application shall be included in the protection scope of the claims of the application.

Claims

1. An over-temperature warning and grooved wire clamp, characterized in that, include: Cable clamp housing, fasteners, locking bolts, and alarm unit; The wire clamp housing and the fastener are fixedly connected by locking bolts, and a wire clamping groove is provided between the wire clamp housing and the fastener; The alarm unit is provided on both sides of the locking bolt. The alarm unit has a cavity inside. An indicator rod is provided inside the cavity. A positioning protrusion is provided on the outer diameter of the indicator rod away from the cavity port. A return spring is provided between the indicator rod and the cavity. The cavity contains a deformation cavity, which contains a temperature-sensitive deformation sheet and an elastic positioning element. One end of the elastic positioning element is fixedly connected to the temperature-sensitive deformation sheet, and the other end of the elastic positioning element abuts against the positioning protrusion.

2. The over-temperature warning and grooved clamp according to claim 1, characterized in that, The temperature-sensitive deformation plates inside the alarm units on both sides of the locking bolt have different heat bending thresholds, divided into high-temperature and low-temperature sections.

3. The over-temperature warning and grooved clamp according to claim 2, characterized in that, The thermal bending threshold in the low-temperature range is 75℃~80℃, and the thermal bending threshold in the high-temperature range is 95℃~100℃.

4. The over-temperature warning and grooved clamp according to claim 1, characterized in that, A limiting block is fixedly installed at the cavity port, and a limiting protrusion is provided on the outer diameter of the indicator rod near the cavity port. The limiting block and the limiting protrusion cooperate to prevent the indicator rod from detaching from the cavity.

5. The over-temperature warning and grooved clamp according to claim 4, characterized in that, A reflective area is provided on the outer diameter of the indicator rod near the limiting block. The reflective area uses a bright color and is combined with reflective material.

6. The over-temperature warning and grooved clamp according to claim 1, characterized in that, A temperature-conducting hole is provided between the deformation cavity and the clamping groove to facilitate the conduction of temperature from the clamping groove area to the deformation cavity.

7. The over-temperature warning and grooved clamp according to claim 1, characterized in that, The fastener has a sealing hole, a temperature sensor is installed inside the sealing hole, a heat conduction hole is provided between the temperature sensor and the clamping groove, and a sealing cap is provided at the top of the sealing hole, the top of the sealing cap being wider than the diameter of the sealing hole.

8. The over-temperature warning and grooved clamp according to claim 7, characterized in that, It also includes an alarm, and the inside of the sealing cap has a conductive hole for connecting the temperature sensor and the alarm.

9. The over-temperature warning and grooved clamp according to claim 1, characterized in that, The interior of the clamping groove has conductive grooves distributed in a grid pattern, and the depth of the conductive grooves is 0.5mm~1mm.

10. The over-temperature warning and grooved clamp according to claim 1, characterized in that, The wire clamping groove has a bottom sealing layer on the wire clamp housing side and a top sealing layer on the fastener side. Both the top and bottom sealing layers are designed to be peelable.

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