CN105680398A - Electric deicing pickaxe and deicing method - Google Patents

Abstract

The invention discloses an electric deicing pick and a deicing method, which comprise an insulating rod and a casing arranged on the insulating rod, a coil is arranged inside the casing, an iron core is arranged inside the coil, and an iron core is arranged inside the iron core. There is a sliding armature, and a return spring is set on the sliding armature. The upper end of the sliding armature is provided with a deicing shovel protruding from the housing, and the housing is provided with a deicing guiding line protection mechanism. The device does not require a power outage during the deicing process, and the high voltage will not cause damage to the operator.

Description

Electric deicing pick and deicing method

technical field

The invention relates to the technical field of deicing equipment for power transmission lines, in particular to an electric deicing pick and a deicing method.

Background technique

With the rapid development of my country's electric power industry, the coverage area of high-voltage transmission network continues to expand, and the lines pass through different geographical environments. Some areas often encounter low temperature, ice, snow or freezing weather. However, since the atmospheric temperature is lower than zero and the air humidity is relatively high, the melted ice will quickly condense into ice, making the speed of freezing faster than the speed of melting, resulting in more and more ice. Severe icing of high-voltage lines will lead to collapse of towers, wire galloping, disconnection, insulator flashover and de-icing jumps, etc., causing accidents such as line tripping and power supply interruptions. Production and people's lives have been seriously affected.

In order to alleviate the adverse effects of ice and snow disasters on transmission lines, various deicing technology research work has been carried out at home and abroad. There are more than 30 kinds of deicing methods at home and abroad, which are basically divided into two types: mechanical deicing method and thermal deicing method. Mechanical deicing methods include strong vibration method and pulley scraping method. This method is cheap, but consumes a lot of manpower and material resources, and the deicing efficiency is low; thermal deicing mainly includes three-phase short-circuit deicing and load deicing. Compared with deicing, the deicing speed is fast and the safety is high. It can only be used for local lines. However, the traditional mechanical deicing mechanism or ice melting device is easy to cause trauma damage to the power line, which seriously affects the life of the transmission line in the long run. For severe wire icing, manual deicing is generally the most effective method, but manual deicing is very dangerous and the efficiency is low. In addition, the power transmission system is a system with a strong electric field. Working in a strong electric field for a long time, the human body will be damaged by electromagnetic radiation.

Traditional mechanical deicing devices, such as a robot mechanism for deicing high-voltage transmission lines disclosed in CN201410739538.4, belong to the field of mechanical engineering. The purpose of the present invention is to replace artificial high-altitude operations, improve work efficiency, and reduce the incidence of casualty accidents. The structure of the robot body consists of five parts: deicing tool, walking mechanism, obstacle surmounting mechanism, transmission system and camera unit. The deicing tool consists of a deicing grinding wheel and a deicing hammer, and uses a combination of cutting and impact to achieve deicing. The obstacle surmounting mechanism is integrated with the walking mechanism to realize the obstacle surmounting function of the robot and at the same time ensure that the mechanism can walk on the line. The transmission system is composed of three transmission routes, and the power transmission is realized by means of gear meshing. The camera unit provides real-time feedback on the working conditions of the device on the ground, ensuring the accuracy and reliability of the work. The communication control system on the ground can also perform online fault diagnosis and remote control of the robot. CN201310467828.3 discloses a power transmission line deicing and snow system. A power transmission cable is erected between two pole towers, and a first crossbeam and a second crossbeam are arranged perpendicular to each pole tower between the two pole towers. Vertically above the second beam, four sets of pulleys are used to set the vertical beam, and two sets of pulleys are used to move on the first beam and the second beam at both ends of the vertical beam, and electric pulleys are provided on the vertical beam. The snow removal box that moves upward is provided with a bending bracket inside the snow removal box, and a scraper for scraping off the cables is fixedly connected to the lower end of the bending bracket. The back of the support is fixedly connected with a support, the lower end of the support is connected with a brush, and a distribution box is arranged outside the snow removal box. The ice and snow removal device of the present invention is soft, does not damage cables, avoids direct operation of workers, is safe and reliable, ensures normal operation of power grids in winter, is low in cost, and is easy to use. Another example is the snow-blowing and ice-melting device disclosed by CN201210535045. The motor is set, the walking frame is provided with a vertical first chute, the outer periphery of the wheel shaft of the first pressing wheel is provided with a sliding bearing assembly, the upper part of the bearing jacket is connected to one end of the spring, and the other end of the spring is fixedly connected to the top of the first chute, The spring always gives the bearing a downward force. A heating box is installed at the bottom of the walking frame. A fan is installed at one end of the heating box, an air outlet pipe is installed at the other end of the heating box, and an electric heating wire is installed in the heating box. The invention is installed on transmission lines such as cables, walks along the transmission line, blows off the ice and snow on the line through heated air, melts the ice and snow, removes the ice and snow in a gentle way, increases the work efficiency, has a good effect of blowing snow and melting ice, and has a high cleaning speed Fast, and the working process is safe and stable, avoiding manual direct operation, and ensuring the normal operation of the power grid in winter. Although the above-mentioned traditional ice-melting devices can melt ice, what they don’t know is that: the ice-melting device is easy to cause damage to the high-voltage transmission line, and more importantly, it needs to be powered off first, and then the above-mentioned equipment is installed in the On the power transmission line, it is generally necessary to shut down the power for at least 70 minutes, and then push the gate to send power. After deicing, the above-mentioned equipment needs to be removed after the power failure, and power needs to be sent again, which is time-consuming and labor-intensive, seriously affecting the stability of power supply.

Contents of the invention

In view of this, the object of the present invention is to address the deficiencies of the prior art and provide a hand-held electric deicing pick and a deicing method. The device does not need to be powered off during the deicing process, and the high voltage will not cause damage to the operator. .

In order to achieve the above object, the present invention adopts the following technical solutions: an electric deicing pick, comprising an insulating rod and a housing arranged on the insulating rod, a coil is provided in the housing, an iron core is provided in the coil, the A sliding armature is provided inside the iron core, and a return spring is set on the sliding armature. The upper end of the sliding armature is provided with a deicing shovel protruding from the housing, and the housing is provided with a deicing guiding line protection mechanism. The housing is provided with a lithium battery, which is connected to an energy storage capacitor, and the energy storage capacitor is connected in series with the coil and the thyristor switch.

Further, the de-icing guiding line protection mechanism includes a connecting rod arranged on the housing and a rotating shaft arranged at the free end of the connecting rod. Rollers are set on the rotating shafts, and wires after freezing are arranged on the peripheral sides of the rollers. matching grooves.

Further, a special wear-resistant and heat-resistant rubber layer is provided in the groove.

Further, the rotating shaft is provided with a roller deicing blade alignment mechanism.

Further, the roller deicing blade alignment mechanism includes a sleeve fitted on the rotating shaft and a fixing bolt passing through the sleeve for fixing the sleeve, and the rotating shaft is provided with a nut for fixing the roller.

Further, the direction of the blade of the deicing blade is parallel to the power line.

Further, after the deicing shovel moves upwards, the distance between the blade of the deicing shovel and the groove of the roller is greater than the diameter of the wire after freezing.

Further, a limit block is provided at the lower end of the sliding armature.

Further, the housing is provided with an adjustment mechanism for adjusting the groove of the roller to the blade of the deicing shovel, the adjustment mechanism includes a sliding cylinder arranged on the housing and a connecting rod that slides up and down inside the sliding cylinder, Bolts for fixing the connecting rod are arranged on the sliding cylinder.

Further, the special wear-resistant and heat-resistant rubber layer is composed of the following raw materials in parts by weight: 90-100 parts of nitrile rubber, 10-20 parts of styrene-butadiene rubber, 3-5 parts of alumina, 30-50 parts of zeolite powder, Carbon black N660: 5-10 parts, 7-11 parts of ethoxy-modified polytrisiloxane, 3-6 parts of stearic acid, 5-7 parts of nylon fiber.

A method for deicing with an electric deicing pick, comprising the following steps:

1) Check the diameter of the wire, observe the thickness of the frozen wire, and select a roller that matches the diameter of the frozen wire. The groove of the roller can be stuck on the frozen wire;

2) Adjust the connecting rod so that the distance between the blade of the deicing shovel and the groove of the roller after the deicing shovel moves upward is greater than the diameter of the wire after freezing;

3) After adjusting the sleeve so that the roller corresponds to the blade of the deicing blade, tighten the fixing bolts and nuts;

4) Fix the insulating rod under the shell, clamp the groove of the roller on the transmission line, turn on the power, and move the deicing shovel up and down to impact the ice on the wire, pull the insulating rod to remove the ice on the wire .

After the deicing shovel moves upward, the distance between the blade of the deicing shovel and the groove of the roller is L, and the diameter of the wire after freezing is l, L-l=0.1-3mm.

The electric deicing shovel of the present invention utilizes the principle of electromagnetism, and the lithium battery is used as a power source. Since high-power discharge affects the service life of the lithium battery, the present invention utilizes a large-capacity energy storage capacitor as a discharge element. The lithium battery first charges the energy storage capacitor, then charges After the completion, a strong current is formed, and then the high-power thyristor is triggered to discharge the electromagnet coil with a high current instantaneously, and the armature is used to drive the steel shovel to work, and the cycle and strength of the electromagnet are controlled, so that the steel shovel vibrates continuously with high intensity, effectively Perform deicing.

The device of the present invention is always hung on the wire, and the rollers play a good guiding role at the same time, and the operation is convenient; the distance between the blade of the deicing shovel and the groove of the roller is always slightly larger than the diameter of the wire after freezing, and the deicing shovel will The blade can never touch the wire, so it will not cause any damage to the wire, and the light weight of the device will cause the least damage to the wire, and the insulating rod can be used for high-voltage live work; the invention can replace the roller according to the thickness of the ice, and then adjust The connecting rod prevents the blade of the deicing shovel from touching the wire all the time, and will not damage the wire.

The present invention introduces ethoxy-modified polytrisiloxane into the rubber for the first time, so that the surface of the rubber layer seeps out silicone oil during operation, which helps lubricate the frictional contact surface, thereby reducing friction and prolonging the service life of the rubber layer. More importantly, the rubber layer is used for 5 hours of continuous friction, and the ice attached to the wire will not melt, so that the shell and the insulating rod will not be contaminated with a little water, and live work is safe. Use the rubber in the prior art to rub against the wire for 10 After a few minutes, there will be water flow on the shell, which will seriously affect the safety of deicing.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment the present invention will be described in further detail:

Fig. 1 is a structural schematic diagram of the present invention.

detailed description

Example 1:

As shown in Figure 1, an electric deicing pick includes an insulating rod 16 and a housing 8 arranged on the insulating rod 16, a coil 10 is arranged in the housing 8, an iron core 11 is arranged in the coil 10, The iron core is provided with a sliding armature 12, and the return spring 9 is set on the sliding armature 12. The upper end of the sliding armature 12 is provided with a deicing shovel 7 protruding from the housing 8. On the housing 8 Equipped with deicing guiding line protection mechanism.

The deicing guide line protection mechanism includes a connecting rod 19 arranged on the housing 8 and a rotating shaft 17 arranged at the free end of the connecting rod 19, the rotating shaft is covered with a roller 1, and the peripheral side of the roller 1 is provided with a After the wire 21 matches the groove 20.

The groove is provided with a special wear-resistant and heat-resistant rubber layer 2. The special rubber layer has good wear resistance, and the internal hollow connection structure allows air to enter the interior during the friction process, so that the cooling effect is good and the friction heat is small.

The rotating shaft is provided with a roller deicing shovel alignment mechanism.

The roller deicing shovel alignment mechanism includes a sleeve 4 sleeved on the rotating shaft and a fixing bolt 3 passing through the sleeve 4 for fixing the sleeve. The rotating shaft 17 is provided with a nut 18 for fixing the roller, which facilitates Adjust the rollers so that the grooves of the rollers are aligned with the deicing blade for a wide range of applications.

The direction of the blade of the deicing shovel is parallel to the power line, the ice is wrapped on the wire, and the blade is parallel to the wire, which is convenient for cutting the ice.

After the deicing shovel moves upwards, the distance between the blade of the deicing shovel and the groove of the roller is greater than the diameter of the wire after freezing, so the wire will not be cut.

The lower end of the sliding armature is provided with a limit block to prevent the wire from being cut.

The housing is provided with an adjustment mechanism for adjusting the groove of the roller to the blade of the deicing shovel. The adjustment mechanism includes a sliding cylinder 5 arranged on the housing and a connecting rod 19 sliding up and down inside the sliding cylinder. The sliding cylinder is provided with a bolt 6 for fixing the connecting rod, which is convenient for adjusting the distance between the blade and the lower part of the groove, so that it can cut wires of different diameters covered with ice.

The housing is provided with a lithium battery 15, which is connected to an energy storage capacitor 14, and the energy storage capacitor is connected in series with the coil and the thyristor switch 13.

The special wear-resistant and heat-resistant rubber layer is composed of the following raw materials in parts by weight: 90 parts of nitrile rubber, 10 parts of styrene-butadiene rubber, 3 parts of alumina, 30 parts of zeolite powder, 5 parts of carbon black N660, ethoxy modified 7 parts of non-toxic polytrisiloxane, 3 parts of stearic acid, 5 parts of nylon fiber.

A method for deicing with an electric deicing pick, comprising the following steps:

1) Check the diameter of the wire, observe the thickness of the frozen wire, and select a roller that matches the diameter of the frozen wire. The groove of the roller can be stuck on the frozen wire;

2) Adjust the connecting rod so that the distance between the blade of the deicing shovel and the groove of the roller after the deicing shovel moves upward is greater than the diameter of the wire after freezing;

3) After adjusting the sleeve so that the roller corresponds to the blade of the deicing blade, tighten the fixing bolts and nuts;

4) Fix the insulating rod under the shell, clamp the groove of the roller on the transmission line, turn on the power, and move the deicing shovel up and down to impact the ice on the wire, pull the insulating rod to remove the ice on the wire .

After the deicing shovel moves upward, the distance between the blade of the deicing shovel and the groove of the roller is L, and the diameter of the wire after freezing is l, L-l=0.1mm.

Example 2:

As shown in Figure 1, an electric deicing pick includes an insulating rod 16 and a housing 8 arranged on the insulating rod 16, a coil 10 is arranged in the housing 8, an iron core 11 is arranged in the coil 10, The iron core is provided with a sliding armature 12, and the return spring 9 is set on the sliding armature 12. The upper end of the sliding armature 12 is provided with a deicing shovel 7 protruding from the housing 8. On the housing 8 Equipped with deicing guiding line protection mechanism.

The deicing guide line protection mechanism includes a connecting rod 19 arranged on the housing 8 and a rotating shaft 17 arranged at the free end of the connecting rod 19, the rotating shaft is covered with a roller 1, and the peripheral side of the roller 1 is provided with a After the wire 21 matches the groove 20.

The groove is provided with a special wear-resistant and heat-resistant rubber layer 2. The special rubber layer has good wear resistance, and the internal hollow connection structure allows air to enter the interior during the friction process, so that the cooling effect is good and the friction heat is small.

The rotating shaft is provided with a roller deicing shovel alignment mechanism.

The roller deicing shovel alignment mechanism includes a sleeve 4 sleeved on the rotating shaft and a fixing bolt 3 passing through the sleeve 4 for fixing the sleeve. The rotating shaft 17 is provided with a nut 18 for fixing the roller, which facilitates Adjust the rollers so that the grooves of the rollers are aligned with the deicing blade for a wide range of applications.

The direction of the blade of the deicing shovel is parallel to the power line, the ice is wrapped on the wire, and the blade is parallel to the wire, which is convenient for cutting the ice.

After the deicing shovel moves upwards, the distance between the blade of the deicing shovel and the groove of the roller is greater than the diameter of the wire after freezing, so the wire will not be cut.

The lower end of the sliding armature is provided with a limit block to prevent the wire from being cut.

The housing is provided with a lithium battery 15, which is connected to an energy storage capacitor 14, and the energy storage capacitor is connected in series with the coil and the thyristor switch 13.

The special wear-resistant and heat-resistant rubber layer is composed of the following raw materials in parts by weight: 100 parts of nitrile rubber, 20 parts of styrene-butadiene rubber, 5 parts of alumina, 50 parts of zeolite powder, carbon black N660: 10 parts, ethoxylated modified 11 parts of non-toxic polytrisiloxane, 6 parts of stearic acid, and 7 parts of nylon fiber.

After the deicing shovel moves upwards, the distance between the blade of the deicing shovel and the groove of the roller is L, and the diameter of the wire after freezing is l, and L-l=3mm.

Example 3:

An electric deicing pick, comprising an insulating rod 16 and a casing 8 arranged on the insulating rod 16, a coil 10 is arranged inside the casing 8, an iron core 11 is arranged inside the coil 10, and an iron core 11 is arranged inside the iron core. There is a sliding armature 12, and a return spring 9 is set on the sliding armature 12. The upper end of the sliding armature 12 is provided with a deicing shovel 7 protruding from the housing 8, and the housing 8 is provided with a deicing guide line protection agency.

The deicing guide line protection mechanism includes a connecting rod 19 arranged on the housing 8 and a rotating shaft 17 arranged at the free end of the connecting rod 19, the rotating shaft is covered with a roller 1, and the peripheral side of the roller 1 is provided with a After the wire 21 matches the groove 20.

The groove is provided with a special wear-resistant and heat-resistant rubber layer 2. The special rubber layer has good wear resistance, and the internal hollow connection structure allows air to enter the interior during the friction process, so that the cooling effect is good and the friction heat is small.

The rotating shaft is provided with a roller deicing shovel alignment mechanism.

The roller deicing shovel alignment mechanism includes a sleeve 4 sleeved on the rotating shaft and a fixing bolt 3 passing through the sleeve 4 for fixing the sleeve. The rotating shaft 17 is provided with a nut 18 for fixing the roller, which facilitates Adjust the rollers so that the grooves of the rollers are aligned with the deicing blade for a wide range of applications.

After the deicing shovel moves upwards, the distance between the blade of the deicing shovel and the groove of the roller is greater than the diameter of the wire after freezing, so the wire will not be cut.

The housing is provided with a lithium battery 15, which is connected to an energy storage capacitor 14, and the energy storage capacitor is connected in series with the coil and the thyristor switch 13.

The special wear-resistant and heat-resistant rubber layer is composed of the following raw materials in parts by weight: 95 parts of nitrile rubber, 15 parts of styrene-butadiene rubber, 4 parts of alumina, 40 parts of zeolite powder, 8 parts of carbon black N660, ethoxylated modified 9 parts of non-toxic polytrisiloxane, 5 parts of stearic acid, and 6 parts of nylon fiber.

After the deicing shovel moves upwards, the distance between the blade of the deicing shovel and the groove of the roller is L, and the diameter of the wire after freezing is l, and L-l=2mm.

The difference between embodiment 4 and embodiment 3 is that the groove is provided with a rubber layer in the prior art, and the rubber disclosed in CN201510049051.8 is used.

The invention can replace the rollers according to the thickness of the ice, and then adjust the connecting rod so that the blade of the deicing shovel cannot touch the wire all the time, and the wire will not be damaged. The present invention introduces ethoxy-modified polytrisiloxane into the rubber for the first time, so that the surface of the rubber layer seeps out silicone oil during operation, which helps lubricate the frictional contact surface, thereby reducing friction and prolonging the service life of the rubber layer. More importantly, use the rubber layer of Examples 1-4 for 5 hours of continuous friction, and the ice attached to the wire will not melt, so that the shell and the insulating rod will not be contaminated with a little water, and live work is safe. Use CN201510049051.8 After 10 minutes of friction between the disclosed rubber and the wire, water will flow on the casing, seriously affecting the safety of deicing.

Finally, it is noted that the above embodiments are only used to illustrate the technical solution of the present invention without limitation, other modifications or equivalent replacements made by those skilled in the art to the technical solution of the present invention, as long as they do not depart from the spirit and spirit of the technical solution of the present invention All should be included in the scope of the claims of the present invention.

Claims (10)

1. An electric deicing pick, characterized in that: it comprises an insulating rod and a housing arranged on the insulating rod, a coil is provided in the housing, an iron core is provided in the coil, and a sliding rod is provided in the iron core. An armature, the sliding armature is set with a return spring, the upper end of the sliding armature is provided with a deicing shovel protruding from the housing, the housing is provided with a deicing guiding line protection mechanism, and the housing is equipped with The lithium battery is connected with the energy storage capacitor, and the energy storage capacitor is connected in series with the coil and the thyristor switch. 2. The electric deicing pick according to claim 1, characterized in that: the deicing guiding line protection mechanism comprises a connecting rod arranged on the casing and a rotating shaft arranged at the free end of the connecting rod, and rollers are set on the rotating shaft , the peripheral side of the roller is provided with a groove matching the frozen wire. 3. The electric deicing pick according to claim 2, characterized in that: a special wear-resistant and heat-resistant rubber layer is provided in the groove. 4. The electric deicing pick according to claim 2, characterized in that: the rotating shaft is provided with a roller deicing shovel alignment mechanism. 5. The electric deicing pick according to claim 4, characterized in that: said roller deicing shovel alignment mechanism comprises a sleeve fitted on the rotating shaft and a fixing bolt passing through the sleeve for fixing the sleeve, said The rotating shaft is provided with a nut for fixing the roller. 6. The electric deicing pick according to claim 2, wherein the direction of the blade of the deicing shovel is parallel to the power line. 7 . The electric deicing pick according to claim 6 , wherein after the deicing shovel moves upwards, the distance between the blade of the deicing shovel and the groove of the roller is greater than the diameter of the wire after freezing. 8. The electric deicing pick according to claim 1, wherein a limit block is provided at the lower end of the sliding armature. 9. The electric deicing pick according to claim 1, characterized in that: the housing is provided with an adjustment mechanism for adjusting the groove of the roller to the blade of the deicing shovel, and the adjustment mechanism includes a A sliding cylinder and a connecting rod sliding up and down inside the sliding cylinder, the sliding cylinder is provided with bolts for fixing the connecting rod. 10. A method for deicing with an electric deicing pick, comprising the following steps: 1) Check the diameter of the wire, observe the thickness of the frozen wire, and select a roller that matches the diameter of the frozen wire. The groove of the roller can be stuck on the frozen wire; 2) Adjust the connecting rod so that the distance between the blade of the deicing shovel and the groove of the roller after the deicing shovel moves upward is greater than the diameter of the wire after freezing; 3) After adjusting the sleeve so that the roller corresponds to the blade of the deicing blade, tighten the fixing bolts and nuts; 4) Fix the insulating rod under the shell, clamp the groove of the roller on the transmission line, turn on the power, and move the deicing shovel up and down to impact the ice on the wire, pull the insulating rod to remove the ice on the wire .