Wire clamp overheat alarm system

Abstract

The present invention discloses a wire clamp overheat alarm system, comprising a wire clamp, a stopper and an overheat alarm, wherein the overheat alarm comprises a shell, a shell cover, a spring and an indicator cloth; the shell cover is fixed on the shell by an alloy with a preset melting point, and the spring is assembled between the shell and the shell cover in a compressed state; the first end of the indicator cloth is connected to the shell cover, and the second end of the indicator cloth is connected to the shell; the wire clamp overheat alarm is installed in a mounting hole on the side of the wire clamp; a retaining edge is provided at one end of the shell close to the shell cover, and the retaining edge is exposed outside the mounting hole and contacts the side wall surface of the wire clamp; the first end of the stopper is connected to the bolt of the wire clamp, and the second end of the stopper presses the retaining edge against the side wall surface of the wire clamp. The wire clamp overheat alarm system aims to solve the technical problems of inaccurate detection and inconvenient replacement of the existing mechanical wire clamp temperature detector.

Description

Technical Field

[0001] The invention relates to the field of heating detection of power transmission lines, and in particular to a wire clamp overheating alarm system. Background Art

[0002] Existing power equipment often generates heat and causes abnormal temperature rise during operation. Detecting temperature changes in specific parts of the equipment is a feasible method to find out whether the equipment has hidden faults, and there are many related technical solutions. However, the existing technology still has many shortcomings in the implementation of overheating monitoring and alarm at the connection parts of power overhead conductors.

[0003] The common practice of power operation units is to use periodic infrared thermal imagers for monitoring, which plays a role in discovering equipment overheating defects to a certain extent. However, infrared thermal imagers are inconvenient to carry, take a long time to detect during inspections, and are expensive. As a result, infrared thermal imager detection methods are only used during special inspections, and are not used during general routine inspections. As a result, some heating defects cannot be discovered in time, increasing the probability of faults further deteriorating into accidents, bringing risks to power grid operations.

[0004] At present, there are some mechanical alarms applied to power line clamps, which can detect the temperature of the clamps in real time 24 hours a day. The alarm is triggered mainly by the alloy with a preset melting point. The existing mechanical alarms are generally installed on the surface of the clamps. However, in high-altitude environments, the temperature of the clamp surface is greatly affected by wind, sunlight and other climate environments, which may cause inaccurate alarms. In addition, the mechanical alarm will become invalid after use, and the problem of convenient replacement must also be considered. Summary of the invention

[0005] The main purpose of the present invention is to provide a wire clamp overheating alarm system, which is intended to solve the technical problems of inaccurate detection and inconvenient replacement of existing mechanical wire clamp temperature detectors.

[0006] To achieve the above-mentioned purpose, the wire clamp overheat alarm system proposed in the present invention includes a wire clamp, a stopper and an overheat alarm, wherein the overheat alarm includes a shell, a shell cover, a spring and an indicator cloth; the shell cover is fixed to the shell by an alloy with a preset melting point, and the spring is assembled between the shell and the shell cover in a compressed state; the first end of the indicator cloth is connected to the shell cover, and the second end of the indicator cloth is connected to the shell; the wire clamp overheat alarm is installed in the mounting hole on the side of the wire clamp; a retaining edge is provided at one end of the shell close to the shell cover, and the retaining edge is exposed outside the mounting hole and contacts with the side wall surface of the wire clamp; the first end of the stopper is connected to the bolt of the wire clamp, and the second end of the stopper presses the retaining edge against the side wall surface of the wire clamp.

[0007] Preferably, the stopper is a special-shaped gasket, and the first end of the special-shaped gasket is fixed under the nut or screw head of the bolt.

[0008] Preferably, the maximum diameter of the rib is greater than the maximum diameter of the shell cover, a through hole is provided at the second end of the special-shaped gasket facing the shell cover, the diameter of the through hole is greater than the maximum diameter of the shell cover, and the diameter of the through hole is smaller than the maximum diameter of the rib.

[0009] Preferably, a connecting cavity is recessed on the bottom surface of the shell toward the shell cover, and a connecting column is provided at one end of the shell cover toward the shell, one end of the connecting column extends into the connecting cavity and is fixed in the connecting cavity by an alloy with a preset melting point located in the connecting cavity.

[0010] Preferably, the side wall surface of the shell includes a base, a supporting portion and a mounting portion which are connected in sequence, the base is connected to the bottom surface of the shell, the supporting portion is arranged at an angle with the base so as to be able to contact and stop the shell cover, and the mounting portion extends in a direction toward the shell cover.

[0011] Preferably, the support portion and the base form an angle of 90 degrees.

[0012] Preferably, a sealing gasket is provided on a side of the support portion in contact with the shell cover.

[0013] Preferably, the rib is arranged at the free end of the mounting portion.

[0014] Preferably, a hole is provided at the center of the connecting cavity, and one end of the connecting column extends from the hole into the connecting cavity.

[0015] Preferably, a first hook is provided on the connecting column, a second hook is provided on the bottom surface of the shell, the first end of the indicating cloth is connected to the first hook, and the second end of the indicating cloth is connected to the second hook.

[0016] In the scheme of the present application, a mounting hole is provided on the side of the wire clamp, and the overheat alarm is installed in the mounting hole to detect the temperature inside the wire clamp. The overheat alarm includes a shell, a shell cover, a spring and an indicator cloth. The shell cover is fixed to the shell by an alloy with a preset melting point, and the spring is assembled between the shell and the shell cover in a compressed state; the first end of the indicator cloth is connected to the shell cover, and the second end of the indicator cloth is connected to the shell. When the temperature inside the wire clamp reaches the preset temperature (the preset melting point of the alloy), the shell cover is ejected under the action of the spring and the indicator cloth is opened. The indicator cloth folded in the shell is pulled out and stretched in the air to form a conspicuous mark to serve as an alarm. In addition, a retaining edge is provided at one end of the shell near the shell cover, and the retaining edge is exposed outside the mounting hole and contacts the side wall surface of the wire clamp. The second end of the stopper presses the retaining edge against the side wall surface of the wire clamp to fix the overheat alarm in the mounting hole to prevent the overheat alarm from falling from the mounting hole when the transmission line shakes or is subjected to strong winds. After the overheat alarm sounds, it cannot be used again. After the maintenance personnel inspect the line and clear the fault, they only need to loosen a bolt on the wire clamp to make the stopper out of the fixed state, and then they can take out the used overheat alarm and replace it with a new one. The operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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.

[0018] Figure 1 It is an overall schematic diagram of a wire clamp overheat alarm system according to an embodiment of the present invention;

[0019] Figure 2 A cross-sectional view of a wire clamp overheat alarm system according to an embodiment of the present invention;

[0020] Figure 3 A partial cross-sectional view of a wire clamp overheat alarm system according to an embodiment of the present invention;

[0021] Figure 4 is a cross-sectional view of an overheat alarm according to an embodiment of the present invention;

[0022] Figure 5 It is a cross-sectional view of the components of the overheat alarm according to an embodiment of the present invention.

[0023] Description of Figure Numbers:

[0024] Label name Label name 100 Cable clip 200 Stopper 300 Overheat alarm 310 case 320 Shell cover 330 spring 340 Indicator cloth 314 Edge guard 311 Base 350 Connecting column 312 Support 400 alloy 313 Installation Department

[0025] 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

[0026] 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.

[0027] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement, 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. 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 technical features indicated. 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 it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0028] See attached Figure 1 To Attachment Figure 4 The wire clamp overheat alarm system proposed by the present invention includes a wire clamp 100, a stopper 200 and an overheat alarm 300, and the overheat alarm 300 includes a shell 310, a shell cover 320, a spring 330 and an indicator cloth 340; the shell cover 320 is fixed to the shell 310 by an alloy 400 with a preset melting point, and the spring 330 is assembled between the shell 310 and the shell cover 320 in a compressed state; the first end of the indicator cloth 340 is connected to the shell cover 320, and the second end of the indicator cloth 340 is connected to the shell 310; the wire clamp 100 overheat alarm is installed in the mounting hole on the side of the wire clamp 100; a retaining edge 314 is provided at one end of the shell 310 close to the shell cover 320, and the retaining edge 314 is exposed outside the mounting hole and contacts the side wall surface of the wire clamp 100; the first end of the stopper 200 is connected to the bolt of the wire clamp 100, and the second end of the stopper 200 presses the retaining edge 314 against the side wall surface of the wire clamp 100.

[0029] In the solution of the present application, a mounting hole is provided on the side of the wire clamp 100, and the overheat alarm 300 is installed in the mounting hole to detect the temperature inside the wire clamp 100. The overheat alarm 300 includes a housing 310, a housing cover 320, a spring 330 and an indicator cloth 340. The housing cover 320 is fixed to the housing 310 by an alloy 400 with a preset melting point, and the spring 330 is assembled between the housing 310 and the housing cover 320 in a compressed state; the first end of the indicator cloth 340 is connected to the housing cover 320, and the second end of the indicator cloth 340 is connected to the housing 310. When the temperature inside the wire clamp 100 reaches the preset temperature (the preset melting point of the alloy 400), the housing cover 320 is ejected under the action of the spring 330, and the indicator cloth 340 is pulled open. The indicator cloth 340 folded in the housing 310 is pulled out and spreads in the air to form a conspicuous mark to serve as an alarm. In addition, a retaining edge 314 is provided at one end of the housing 310 close to the housing cover 320. The retaining edge 314 is exposed outside the mounting hole and contacts the side wall surface of the wire clamp 100. The second end of the stopper 200 presses the retaining edge 314 against the side wall surface of the wire clamp 100 to fix the overheat alarm 300 in the mounting hole, preventing the overheat alarm 300 from falling from the mounting hole when the power transmission line shakes or is subjected to strong winds. After the overheat alarm 300 alarms, the overheat alarm 300 can no longer be used. After the maintenance personnel inspect the line and clear the fault, they only need to loosen a bolt 110 on the wire clamp 100 to make the stopper 200 out of the fixed state, and then the used overheat alarm 300 can be taken out and replaced with a new overheat alarm 300, which is easy to operate.

[0030] The melting point of the alloy 400 with a preset melting point is selected in the range of 70 to 150 degrees Celsius, which is the temperature range in which the wire clamp reaches an overheating defect. One end of the spring 330 abuts against the bottom surface of the housing 310 , and the other end of the spring 330 abuts against the housing cover 320 .

[0031] Preferably, the stopper 200 is a special-shaped gasket, and the first end of the special-shaped gasket is fixed under the nut or screw head of the bolt 110. A washer needs to be installed under the nut or screw head of the bolt 110 to prevent wear on the wire clamp. The special-shaped gasket of the present application directly replaces the washer under the bolt 110. The special-shaped gasket is fixed after the bolt 110 is tightened and presses the retaining edge 314 against the side wall surface of the wire clamp 100.

[0032] Preferably, the maximum diameter of the rib 314 is greater than the maximum diameter of the shell cover 320, and a through hole is provided at the second end of the special-shaped gasket facing the shell cover 320, the diameter of the through hole is greater than the maximum diameter of the shell cover 320, and the diameter of the through hole is smaller than the maximum diameter of the rib 314. The special-shaped gasket is set as an L-shaped gasket, and the second end of the L-shaped gasket is attached to the side wall of the wire clamp 100. When the alloy 400 is melted, the shell cover 320 is ejected from the through hole.

[0033] As a specific embodiment of the present invention, a connection cavity is recessed on the bottom surface of the shell 310 toward the shell cover 320, and a connection column 350 is provided at one end of the shell cover 320 toward the shell 310. One end of the connection column 350 extends into the connection cavity and is fixed in the connection cavity by the alloy 400 of a preset melting point located in the connection cavity. It should be noted that the depth of the mounting hole should be slightly smaller than the vertical distance from the retaining edge 314 of the shell 310 to the bottom surface of the shell 310. When the overheat alarm 300 is installed in the mounting hole, the bottom surface of the shell 310 contacts the hole wall of the mounting hole, so that the alloy 400 contacts the hole wall of the mounting hole.

[0034] Please refer to the attached Figure 5 Further, the side wall surface of the housing 310 includes a base 311, a support portion 312 and a mounting portion 313 connected in sequence, the base 311 is connected to the bottom surface of the housing 310, the support portion 312 is arranged at an angle with the base 311 to be able to contact and stop the shell cover 320, and the mounting portion 313 extends in a direction toward the shell cover 320. Preferably, the support portion 312 is at an angle of 90 degrees with the base 311. The support portion 312 is arranged to stop the shell cover 320 in order to further practice the sealing of the inside of the alarm.

[0035] Furthermore, a sealing gasket (not shown) is provided on the side where the support portion 312 contacts the shell cover 320. The sealing gasket can prevent rainwater from entering the overheat alarm 300 and corroding the spring 330 and the indicator cloth 340.

[0036] The retaining edge 314 is disposed at the free end of the mounting portion 313 .

[0037] Furthermore, a hole is provided at the center of the connection cavity, and one end of the connection column 350 extends into the connection cavity from the hole. A first hook (not shown) is provided on the connection column 350, and a second hook (not shown) is provided on the bottom surface of the housing 310. The first end of the indicator cloth 340 is connected to the first hook, and the second end of the indicator cloth 340 is connected to the second hook. The first hook and the second hook can form a stable connection with the indicator cloth 400.

[0038] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings, or directly / indirectly applied in other related technical fields under the concept of the present invention are included in the patent protection scope of the present invention.

Claims

1. A wire clamp overheat alarm system, characterized in that: The wire clamp overheat alarm system comprises a wire clamp, a stopper and an overheat alarm, wherein the overheat alarm comprises a shell, a shell cover, a spring and an indicator cloth; the shell cover is fixed to the shell by an alloy with a preset melting point, and the spring is assembled between the shell and the shell cover in a compressed state; the first end of the indicator cloth is connected to the shell cover, and the second end of the indicator cloth is connected to the shell; the overheat alarm is installed in the mounting hole on the side of the wire clamp; the shell is provided with a retaining edge at one end close to the shell cover, the retaining edge is exposed outside the mounting hole and contacts the side wall surface of the wire clamp; the first end of the stopper is connected to the bolt of the wire clamp, and the second end of the stopper presses the retaining edge against the side wall surface of the wire clamp; a connecting cavity is recessed on the bottom surface of the shell in the direction of the shell cover, and a connecting column is provided on one end of the shell cover facing the shell, and one end of the connecting column extends into the connecting cavity and is fixed in the connecting cavity by the alloy with a preset melting point located in the connecting cavity; the melting point of the alloy with the preset melting point is selected in the range of 70-150 degrees Celsius.

2. The wire clamp overheat alarm system according to claim 1, characterized in that: The stopper is a special-shaped gasket, and the first end of the special-shaped gasket is fixed under the nut or screw head of the bolt.

3. The wire clamp overheat alarm system according to claim 2, characterized in that: The maximum diameter of the rib is greater than the maximum diameter of the shell cover, a through hole is provided at the second end of the special-shaped gasket facing the shell cover, the diameter of the through hole is greater than the maximum diameter of the shell cover, and the diameter of the through hole is smaller than the maximum diameter of the rib.

4. The wire clamp overheat alarm system according to claim 1, characterized in that: The side wall surface of the shell includes a base, a support portion and a mounting portion which are connected in sequence, the base is connected to the bottom surface of the shell, the support portion is arranged at an angle with the base so as to be able to contact and stop the shell cover, and the mounting portion extends in a direction toward the shell cover.

5. The wire clamp overheat alarm system according to claim 4, characterized in that: The support portion and the base portion form an angle of 90 degrees.

6. The wire clamp overheat alarm system according to claim 4, characterized in that: A sealing gasket is arranged on one side of the support portion contacting the shell cover.

7. The wire clamp overheat alarm system according to claim 4, characterized in that: The retaining edge is arranged at the free end of the mounting portion.

8. The wire clamp overheat alarm system according to claim 3, characterized in that: A hole is arranged at the center of the connecting cavity, and one end of the connecting column extends from the hole into the connecting cavity.

9. The wire clamp overheat alarm system according to claim 3, characterized in that: The connecting column is provided with a first hook, the bottom surface of the housing is provided with a second hook, the first end of the indicating cloth is connected to the first hook, and the second end of the indicating cloth is connected to the second hook.

Images