Strain insulator string short-circuit clamp, alarm device and use mode

Abstract

The invention discloses a strain insulator string short-circuit clamp, an alarm device and a use mode, the strain insulator string short-circuit clamp comprises a first clamp body and a second clamp body, the first clamp body is connected with a first plain end clamp mouth at a clamp mouth, and the second clamp body is connected with a second plain end clamp mouth at a clamp mouth; the end, away from the clamping opening, of the first clamping body is connected with a connecting rod, the end, away from the clamping opening, of the second clamping body is connected with a clamping base, a plurality of gear clamping grooves are formed in the clamping base, a perforated stand column is arranged in the middle of the second clamping body, the first clamping body movably penetrates through a limiting hole in the perforated stand column, and the maximum opening height of the first clamping body is limited through the limiting hole. The first clamp body is fixed in the gear clamping grooves through the connecting rod, and the connecting rod is clamped with different gear clamping grooves when being operated so as to change the opening height of the first plain-end clamp nozzle, so that the first plain-end clamp nozzle and the second plain-end clamp nozzle clamp tension string wire side yoke plate fittings of different voltage grades. And in cooperation with an alarm device, monitoring of the short-circuit state of the strain insulator string can be synchronously realized.

Description

Technical field

[0001] The present invention belongs to the technical field of electric power engineering, and in particular to the technical field of high-voltage transmission line monitoring. [Background Technology]

[0002] According to State Grid Corporation's "35 Serious Violations," before hanging wires on a tension tower, the tension insulator strings must be short-circuited with conductors. In traditional transmission line tower assembly, after the tension insulator strings are hoisted onto the tower crossarms, aluminum conductors are typically wrapped around the strings to short-circuit them. This prevents workers from being electrocuted while working at height. In actual construction, the frequent trembling of the tension insulator strings during line tightening can easily cause the aluminum conductors to fall off or to lose contact with the strings, making it difficult for workers to accurately determine if the strings are short-circuited. For example, in special situations, such as those near live conductors, a personal safety wire is required to ensure safety, significantly increasing the burden on workers to carry and install the safety wires. Furthermore, after construction is completed, the wrapped aluminum conductors must be removed to ensure line operation, posing a risk of falls to workers.

[0003] Patent CN115825813A, "A System and Method for Online Monitoring Short-Circuit Connections of Tension Insulators," addresses the issue of insufficient coverage of short-circuit status monitoring for tension insulators in traditional construction management and control. By assembling a tension insulator string with an online short-circuit monitoring device, a short-circuit monitoring signal is transmitted after the tensioning operation begins, and the short-circuit status signal of the tension insulator string is collected. The short-circuit status of the tension insulator string is then detected based on the short-circuit status signal using a fuzzy control algorithm model. If the tension insulator string is detected to be incorrectly short-circuited, an alarm is issued. This eliminates the influence of on-site video cameras and manual monitoring on short-circuit monitoring results, thereby improving the accuracy of short-circuit monitoring of tension insulator strings.

[0004] Patent CN119108829 A, "A New Portable Grounding Wire Clamp," transforms the traditional hanging grounding wire by adding a switch handle. The switch handle features a traction rope connected to the switch handle at one end and the wire clamp at the other. The grounding clamp includes a soft copper wire connected to the grounding clamp at one end and the wire clamp at the other. This portable grounding wire clamp significantly improves the reliability of the grounding wire connection, allowing workers at height to remove the grounding wire without having to remove the wire, ensuring worker safety and improving work efficiency.

[0005] Patent CN112242616 A "A gooseneck grounding wire clamp" adds an auxiliary connector to the existing wire clamp, changing the connection between the wire clamp and the grounding wire from a single connection to multiple connections, ensuring the stability of the connection. At the same time, the spring increases the clamping force of the wire clamp to ensure the clamping strength and prevent the wire clamp from falling off. The grounding port has a wide applicability and can effectively monitor the connection status of the grounding wire, solving the problem of connection difficulties and inability to monitor the grounding status caused by inconsistent grounding ports of distribution network lines and substations.

[0006] Disadvantages of existing technology

[0007] Patent CN115825813A "A system and method for online monitoring of short-circuit connections of tension insulators" can only solve the problem of monitoring the short-circuit status of tension insulators, but does not solve the problem that operators need to go out and remove the entangled aluminum wires.

[0008] Patent CN119108829 A, "A New Portable Grounding Clamp," adds a switch handle, eliminating the need for workers to reach high above the ground to remove shorting wires. Patent CN 112242616 A, "A Gooseneck Grounding Clamp," adds an auxiliary connector to existing clamps to ensure clamping strength and prevent them from falling off. However, both patents are designed for grounding conductors and cannot be directly applied to shorting strings of tension insulators. Furthermore, these grounding clamps are not compatible with hardware of different voltage levels. [Summary of the invention]

[0009] In view of the shortcomings of the existing technology, the technical problem to be solved by the present invention is to provide a short-circuiting fixture, an alarm device and a usage method for a tension insulator string, which can clamp tension insulator strings of different voltage levels through the short-circuiting fixture, and can synchronously monitor the short-circuiting status of the tension insulator string through the alarm device.

[0010] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0011] First, a short-circuit clamp for a tension insulator string is provided, comprising a first clamp body and a second clamp body arranged opposite to each other, and an elastic member for closing the clamping openings of the first clamp body and the second clamp body, wherein the first clamp body is connected to a first flat clamping mouth at the clamping opening, and the second clamp body is connected to a second flat clamping mouth at the clamping opening, and the first flat clamping mouth and the second flat clamping mouth are used to cooperate in clamping a side connecting plate hardware of a tension insulator string conductor; the first clamp body is connected to a connecting rod at an end away from the clamping opening, and the second clamp body is connected to a clamping seat at an end away from the clamping opening, the clamping seat is provided with a plurality of gear slots, and an open column is provided in the middle of the second clamp body, the first clamp body is movable through the upper limit hole of the open column, and the maximum opening height of the first clamp body is limited by the limit hole, the first clamp body is fixed in the gear slot by a connecting rod, and when the connecting rod is operated, it engages with different gear slots to change the opening height of the first flat clamping mouth, so that the first flat clamping mouth and the second flat clamping mouth clamp the side connecting plate hardware of a tension insulator string conductor of different voltage levels.

[0012] Preferably, the first clamping body is provided with a V-shaped portion, the first side of the V-shaped portion is movable through the limiting hole, and the first end is connected to the first flat clamping mouth, and the second end is connected to the connecting rod.

[0013] Preferably, the elastic member is a spring, one end of the spring is connected to the second side of the V-shaped portion, and the other end of the spring is connected to the lower part of the hole column.

[0014] Preferably, the base includes a left baffle wall, a right baffle wall and a rear baffle wall that are relatively arranged and connect the rear ends of the left baffle wall and the right baffle wall, and an opening is formed on the front side; a plurality of gear slots are correspondingly opened on the left baffle wall and the right baffle wall and open downward, and a through slot is opened between the plurality of gear slots and the second clamp body, so that the connecting rod can switch between the plurality of gear slots through the through slot.

[0015] Preferably, the plurality of gear slots all extend obliquely toward the rear.

[0016] Preferably, the second clamping body, the holder and the opening column are an integrated structure and are made of insulating material.

[0017] Preferably, the connecting rod and the first clamping body are connected by a hinge.

[0018] In addition, the present invention also provides an alarm device connected to the short-circuit fixture of the tension insulator string, the alarm device comprising a short-circuit state alarm module, an alarm device handle, and an alarm device fixing member, the short-circuit state alarm module being connected to the alarm device handle, and the alarm device handle being connected to the alarm device fixing member; the connecting rod being connected to one end of the grounding wire, and the other end of the grounding wire being connected to the alarm device fixing member;

[0019] The short-circuit status alarm module includes a short-circuit signal acquisition module, a digital processor module, and an alarm module. The short-circuit signal acquisition module is connected to the second flat-mouth clamp through a signal line. The short-circuit signal acquisition module transmits the collected short-circuit signal of the short-circuit fixture to the digital processor module. The digital processor module determines the grounding status of the tension string. If the grounding status is good, the alarm module does not work; otherwise, the alarm module issues an alarm.

[0020] Preferably, the short-circuit signal acquisition module includes a capacitor C1, a resistor R3 and an optical coupler PC817;

[0021] When the tension insulator string is well grounded, the potential of the second flat jaw is zero, the capacitor C1 and the resistor R3 discharge through the second flat jaw, the potential decreases, and the optical coupler PC817 is turned on, and a trigger signal is received by the digital processing module, thereby judging that the tension insulator string is well grounded;

[0022] When the alarm device fixings or short-circuit fixtures are not fixed to the hardware on both sides of the tension insulator string, capacitor C1 is energized and the potential of the second flat clamp is floating. At this time, the optocoupler PC817 is not conductive and the digital processing module does not receive the trigger signal. It is therefore determined that there is a problem with the grounding status of the tension insulator string and an alarm message is issued.

[0023] Furthermore, the present invention also provides a method for using a tension insulator string short-circuiting fixture and an alarm device, comprising:

[0024] The alarm device is fixed to the metal fitting on the cross-arm side of the tension insulator string through the alarm device handle and the alarm device fixing piece, thereby realizing the grounding of the alarm device and the short-circuit fixture;

[0025] When the short-circuit fixture is hung on the connecting plate fitting on the conductor side of the tension insulator string, the grounding of the conductor side of the tension insulator string is achieved through the grounding wire, the first clamp body, and the first flat clamping mouth;

[0026] When the tension insulator string is well grounded, the second flat clamp is directly grounded through the tension insulator string conductor side hardware, the first flat clamp, the first clamp body, the grounding wire, the alarm device, the tension insulator string cross-arm side hardware, and the tower. The short-circuit signal acquisition module sends a trigger signal to the digital processing module, thereby judging that the tension insulator string is well grounded.

[0027] When the alarm device fixings or short-circuit fixtures are not fixed to the hardware on both sides of the tension insulator string, the digital processing module does not receive the trigger signal, thereby judging that there is a problem with the grounding status of the tension insulator string and issuing an alarm message.

[0028] The present invention adopts the above technical solution and has the following beneficial effects:

[0029] The shorting fixture allows for short-circuiting of a string of tension insulators, meeting safety regulations. The first clamp is connected to a first flat jaw at its opening, while the second clamp is connected to a second flat jaw at its opening. The first and second jaws are used to securely hold the side connectors of the tension insulator string conductors. Because the shorting fixture has different position slots, the first clamp is secured in these slots via a connecting rod. When the connecting rod is operated, it engages with the different position slots, changing the opening height of the first jaw, allowing the first and second jaws to securely hold the side connectors of the tension insulator string conductors of different voltage levels.

[0030] Therefore, it can be applied to tension insulator series plate fittings of different voltage levels and specifications.

[0031] The alarm device is connected to the short-circuit fixture of the tension insulator string and includes a short-circuit status alarm module, which includes a short-circuit signal acquisition module, a digital processor module, and an alarm module. The short-circuit signal acquisition module is connected to the second flat-end clamp via a signal line. The short-circuit signal acquisition module transmits the collected short-circuit signal of the short-circuit fixture to the digital processor module, which determines the grounding status of the tension insulator string. If the grounding status is good, the alarm module does not operate; otherwise, the alarm module issues an alarm. Therefore, the grounding status of the tension insulator string can be monitored, and the operator can be promptly reminded of the grounding status of the tension insulator string to avoid induced electric shock.

[0032] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and drawings.

Brief Description of the Drawings

[0033] The invention will be further described below with reference to the accompanying drawings:

[0034] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0035] Figure 2 This is a circuit diagram of the short-circuit signal acquisition module of the present invention;

[0036] Figure 3 It is a schematic diagram of a short-circuit fixture and an alarm device for a tension insulator string of the present invention;

[0037] Figure 4 The invention is a schematic diagram of a short-circuiting fixture for a tension insulator string;

[0038] In the picture:

[0039] 1. Alarm device, 11. Short-circuit status alarm module, 111. Short-circuit signal acquisition module, 112. Digital processing module, 113. Alarm module, 12. Alarm device handle, 13. Alarm device fixing part, 2. Strain insulator string, 3. Short-circuit clamp, 31. Clamping seat, 311. Gear slot, 312. Through slot, 32. First clamp, 321. V-shaped portion, 33. First flat-mouth clamp, 34. Second clamp, 35. Second flat-mouth clamp, 36. Opening column, 361. Limiting hole, 37. Connecting rod, 38. Elastic member, 4. Signal line, 5. Grounding wire. [Specific implementation method]

[0040] The following is an explanation and description of the technical solutions of the embodiments of the present invention in conjunction with the drawings of the embodiments of the present invention. However, the following embodiments are only preferred embodiments of the present invention and are not exhaustive. Based on the embodiments in the implementation manner, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0041] Those skilled in the art will appreciate that, unless there is any conflict, the features in the following embodiments and implementations may be combined with each other.

[0042] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. For example, terms such as "upper," "lower," "inner," and "outer" used below to indicate orientation or positional relationships are based solely on the orientation or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the disclosure. They do not indicate or imply that the device or element referred to must have a specific orientation or be constructed or operated in a specific orientation, and therefore should not be construed as limiting the disclosure.

[0043] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0044] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be understood to indicate or imply relative importance or to implicitly indicate the quantity of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0045] Reference Figure 3 and Figure 4 As shown, a short-circuit fixture 3 for a tension insulator string includes a first clamp 32, a second clamp 34 and an elastic member 38 that closes the clamping opening of the first clamp and the second clamp. The first clamp 32 is connected to a first flat clamp mouth 33 at the clamping opening, and the second clamp 34 is connected to a second flat clamp mouth 35 at the clamping opening. The first flat clamp mouth 33 and the second flat clamp mouth 35 are used to cooperate in clamping the side connecting plate hardware of the tension insulator string conductor. The first clamp 32 is connected to a connecting rod 37 at the end away from the clamping opening. The connecting rod 37 is connected to the grounding wire 5. The second flat clamp 35 is connected to the signal wire 4. The second clamp 34 is connected to a clamping seat 31 at the end away from the clamping opening. The clamping seat 31 is provided with multiple gear slots 311. The middle of the second clamp is provided with an opening column 36. The first clamp 32 is movable through the upper limit hole 361 of the opening column, and the maximum opening height of the first clamp is limited by the limit hole. The first clamp 32 is fixed in the gear slot 311 by the connecting rod 37. When the connecting rod 37 is operated, it engages with different gear slots 311 to change the opening height of the first flat clamp 33, so that the first flat clamp 33 and the second flat clamp 35 clamp the side connecting plate hardware of the tension insulator string with different voltage levels. Therefore, the tension insulator string can be short-circuited by the short-circuiting fixture, meeting the requirements of safety regulations. The short-circuit fixture has different gear slots and can be used for series connection of tension insulator plate fittings of different voltage levels and specifications.

[0046] It is understood that the first flat-mouthed clamping jaw 33 can be integrally provided with the first clamping body 32 or can be separated and combined. The second flat-mouthed clamping jaw 35 can be integrally provided with the second clamping body 34 or can be separated and combined. The first clamping body 32, first flat-mouthed clamping jaw 33, connecting rod 37, second clamping body 34, and second flat-mouthed clamping jaw 35 are made of high-quality conductive materials, such as aluminum. The grounding wire 5 is made of soft copper wire. This ensures good grounding of the tension insulator string and grounding status monitoring.

[0047] When in use, standing on the side of the alarm device and pulling the grounding wire 5 with force, the connecting rod 37 brings the first clamp 32 out along the shift slot 311 of the clamping seat 31. The first clamp 32 is pressed against the limiting hole 361 of the opening column 36, receiving an upward force, thereby forcing the first clamp 32 to rotate around the connecting rod 37, thereby opening the first flat-end clamp 33 and the second flat-end clamp 35. This allows the short-circuit clamp of the tension insulator string to be opened remotely, eliminating the need for operators to go out of the line to open the tension string, reducing operational risks. Furthermore, the short-circuit clamp can be opened remotely, eliminating the need for operators to go out of the line, reducing operational risks.

[0048] Specifically, the first clamping body 32 is provided with a V-shaped portion 321, the first side of the V-shaped portion 321 is movable through the limiting hole 361, and the first end is connected to the first flat-mouth clamping mouth 33, and the second end is connected to the connecting rod 37. The elastic member 38 is a spring, one end of which is connected to the second side of the V-shaped portion, and the other end is connected to the lower part of the perforated column. The clamping seat 31 is a U-shaped structure, including a left baffle wall and a right baffle wall arranged opposite to each other, and a rear baffle wall connecting the rear ends of the left and right baffle walls, and forming an opening on the front side; a plurality of gear slots 311 are correspondingly opened on the left and right baffle walls and open downward, and a through slot 312 is opened between the plurality of gear slots and the second clamping body, so that the connecting rod 37 can switch between the plurality of gear slots 311 through the through slot.

[0049] Furthermore, the plurality of gear slots 311 are all extended obliquely to the rear side, so as to facilitate the use of the grounding wire 5 to pull out the connecting rod 37, thereby opening the different openings of the short-circuiting fixture and realizing the removal of the short-circuiting fixture.

[0050] Preferably, the second clamp 34, the holder 31, and the perforated column 36 are integrally constructed, for example, from aluminum. This eliminates the need for assembly, reducing loose connections between devices. The connecting rod 37 and the first clamp 32 are hinged to facilitate rotation of the connecting rod relative to the first clamp and separation from the shift slot.

[0051] like Figures 1 to 3 As shown, the alarm device 1 is connected to the short-circuit fixture 3 of the tension insulator string. The alarm device 1 includes a short-circuit status alarm module 11, an alarm device handle 12, and an alarm device fixing part 13. The short-circuit status alarm module 11 is connected to the alarm device handle 12, and the alarm device handle 12 is connected to the alarm device fixing part 13. The connecting rod is connected to one end of the grounding wire, and the other end of the grounding wire is connected to the alarm device fixing part. The shell of the short-circuit status alarm module 11 is made of a good conductor material to facilitate shielding from external interference. The alarm device handle 12 is made of a good conductor material and is provided with an external thread. The alarm device fixing part 13 is made of a good conductor material and has a hole on its upper side, and an internal thread is provided inside the hole. The alarm device fixing part 13 is rotated by the thread to achieve the forward or backward movement of the alarm device handle 12, thereby achieving the clamping or loosening of the hardware on the cross-arm side of the tension insulator. When the alarm device 1 is fixed to the cross-arm side hardware of the tension insulator string via the alarm device handle 12 and the alarm device fixing member 13, the cross-arm side of the tension insulator string is well grounded. When the shorting fixture is hung on the connecting plate hardware on the conductor side of the tension insulator string, the conductor side of the tension insulator string is grounded via the grounding wire 5, the first clamp 32, and the first flat-end clamping mouth 33.

[0052] like Figure 1As shown, the short-circuit status alarm module 11 includes a short-circuit signal acquisition module 111, a digital processor module 112, and an alarm module 113. The short-circuit signal acquisition module is connected to the second flat-mouth clamp via a signal line. The short-circuit signal acquisition module transmits the collected short-circuit signal of the short-circuit fixture to the digital processor module. The digital processor module determines the grounding status of the tension string. If the grounding status is good, the alarm module does not work. Otherwise, the alarm module issues an alarm, such as an alarm sound, to remind the staff that the tension insulator string is not short-circuited properly. Therefore, it is possible to monitor the grounding status of the tension insulator string and promptly remind the operating personnel of the grounding status of the tension insulator string to avoid induced electric shock, etc.

[0053] like Figure 2 As shown, the short-circuit signal acquisition module 111 includes a capacitor C1, a resistor R1, resistors R2 and R3, and an optical coupler PC817. The second flat-mouthed clamp is directly grounded, and the optical coupler is connected to the digital processor module.

[0054] When the capacitor C1 and the resistor R3 discharge through the second flat jaw, the potential gradually decreases, the light-emitting diode side circuit of the optocoupler PC817 is turned on, and a trigger signal is received by the digital processing module, thereby judging that the tension insulator string is well grounded;

[0055] When the alarm device fixings or short-circuit fixtures are not fixed to the hardware on both sides of the tension insulator string, capacitor C1 is energized and the potential of the second flat clamp is floating. At this time, the optocoupler PC817 is not conductive and the digital processing module does not receive the trigger signal. It is therefore determined that there is a problem with the grounding status of the tension insulator string and an alarm message is issued.

[0056] Preferably, in order to reduce the interference of power data with extremely fuzzy characteristics such as leakage current and generated induced current on the data processor, a sliding film control algorithm can be used for algorithm processing.

[0057] In addition, in combination with the above-mentioned tension insulator string short-circuiting fixture and alarm device, a method for using the tension insulator string short-circuiting fixture and alarm device is provided, including:

[0058] The alarm device is fixed to the metal fitting on the cross-arm side of the tension insulator string through the alarm device handle and the alarm device fixing piece, thereby achieving grounding on the cross-arm side of the tension insulator string;

[0059] When the short-circuit fixture is hung on the connecting plate fitting on the conductor side of the tension insulator string, the grounding of the conductor side of the tension insulator string is achieved through the grounding wire, the first clamp body, and the first flat clamping mouth;

[0060] When the tension insulator string is well grounded, the second flat clamp is directly grounded through the tension insulator string conductor side hardware, the first flat clamp, the first clamp body, the grounding wire, the alarm device, the tension insulator string cross-arm side hardware, and the tower. The short-circuit signal acquisition module sends a trigger signal to the digital processing module, thereby judging that the tension insulator string is well grounded.

[0061] When the alarm device fixings or short-circuit fixtures are not fixed to the hardware on both sides of the tension insulator string, the digital processing module does not receive the trigger signal, thereby judging that there is a problem with the grounding status of the tension insulator string and issuing an alarm message.

[0062] The above description is merely a specific embodiment of the invention, but the scope of protection of the invention is not limited thereto. Those skilled in the art will understand that the invention includes, but is not limited to, the drawings and the contents described in the above specific embodiments. Any modifications that do not deviate from the functional and structural principles of the invention are intended to be included within the scope of the claims.

Claims

1. A short-circuit fixture for a tension insulator string, characterized in that:

18. The swiftly and minutely adjusting device for a wood-planer working table as claimed in claim 1, wherein said linking rod and said adjusting base are pivotally connected to each other with a bolt, and said bolt has a round shank to contact with said linking rod of said second clamping member.

2. A short-circuit fixture for a tension insulator string according to claim 1, characterized in that: The first clamping body is provided with a V-shaped portion, a first side of the V-shaped portion movably passes through the limiting hole, and a first end is connected to the first flat clamping mouth, and a second end is connected to the connecting rod.

3. The short-circuiting fixture for a tension insulator string according to claim 2, characterized in that: The elastic member is a spring, one end of which is connected to the second side of the V-shaped portion, and the other end of which is connected to the lower portion of the hole column.

4. The short-circuiting fixture for a tension insulator string according to claim 1, characterized in that: The card seat includes a left baffle wall and a right baffle wall that are relatively arranged, and a rear baffle wall connecting the rear ends of the left baffle wall and the right baffle wall, and forming an opening on the front side; multiple gear slots are correspondingly opened on the left baffle wall and the right baffle wall and open downward, and a through slot is opened between the multiple gear slots and the second clamp body, so that the connecting rod can switch between the multiple gear slots through the through slot.

5. The short-circuiting fixture for a tension insulator string according to claim 4, characterized in that: The plurality of gear slots all extend obliquely toward the rear.

6. The short-circuiting fixture for a tension insulator string according to claim 1, characterized in that: The second clamping body, the holder and the opening column are an integrated structure and are made of insulating material.

7. The short-circuiting fixture for a tension insulator string according to claim 1, characterized in that: The connecting rod and the first clamping body are connected by a hinge.

8. An alarm device connected to the tension insulator string short-circuiting fixture according to any one of claims 1 to 7, characterized in that: The alarm device includes a short-circuit state alarm module, an alarm device handle, and an alarm device fixing piece. The short-circuit state alarm module is connected to the alarm device handle, and the alarm device handle is connected to the alarm device fixing piece. The connecting rod is connected to one end of the grounding wire, and the other end of the grounding wire is connected to the alarm device fixing piece. The short-circuit status alarm module includes a short-circuit signal acquisition module, a digital processor module, and an alarm module. The short-circuit signal acquisition module is connected to the second flat-mouth clamp through a signal line. The short-circuit signal acquisition module transmits the collected short-circuit signal of the short-circuit fixture to the digital processor module. The digital processor module determines the grounding status of the tension string. If the grounding status is good, the alarm module does not work; otherwise, the alarm module issues an alarm.

9. The alarm device according to claim 8, characterized in that: The short-circuit signal acquisition module includes a capacitor C1, a resistor R3 and an optical coupler PC817; When the tension insulator string is well grounded, the potential of the second flat jaw is zero, the capacitor C1 and the resistor R3 discharge through the second flat jaw, the potential decreases, and the optical coupler PC817 is turned on, and a trigger signal is received by the digital processing module, thereby judging that the tension insulator string is well grounded; When the alarm device fixings or short-circuit fixtures are not fixed to the hardware on both sides of the tension insulator string, capacitor C1 is energized and the potential of the second flat clamp is floating. At this time, the optocoupler PC817 is not conductive and the digital processing module does not receive the trigger signal. It is therefore determined that there is a problem with the grounding status of the tension insulator string and an alarm message is issued.

10. A method for using a short-circuit fixture for a tension insulator string and an alarm device, characterized in that: include: The alarm device is fixed to the metal fitting on the cross-arm side of the tension insulator string through the alarm device handle and the alarm device fixing piece, thereby realizing the grounding of the alarm device and the short-circuit fixture; When the short-circuit fixture is hung on the connecting plate fitting on the conductor side of the tension insulator string, the grounding of the conductor side of the tension insulator string is achieved through the grounding wire, the first clamp body, and the first flat clamping mouth; When the tension insulator string is well grounded, the second flat clamp is directly grounded through the tension insulator string conductor side hardware, the first flat clamp, the first clamp body, the grounding wire, the alarm device, the tension insulator string cross-arm side hardware, and the tower. The short-circuit signal acquisition module sends a trigger signal to the digital processing module, thereby judging that the tension insulator string is well grounded. When the alarm device fixings or short-circuit fixtures are not fixed to the hardware on both sides of the tension insulator string, the digital processing module does not receive the trigger signal, thereby judging that there is a problem with the grounding status of the tension insulator string and issuing an alarm message.

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