Electrified high-temperature gas circuit ice melting device

Abstract

The utility model discloses an electrified high-temperature gas circuit ice melting device which comprises a high-temperature gas generating device, a gas transmission header pipe, a hollow composite insulator, at least two gas transmission branch pipes and a pipeline fixing piece. The high-temperature gas generating device is arranged near the power transmission line; the hollow composite insulator is fixed on a support of a power transmission line, one end of the hollow composite insulator is connected to the high-temperature gas generating device through the gas transmission header pipe, and the other end is connected with each gas transmission branch pipe. The gas transmission branch pipes are fixed on a lead of the power transmission line through the pipeline fixing parts, and the extension directions of the gas transmission branch pipes are different. According to the utility model, heat of high-temperature gas is conducted to the power transmission line lead, so that ice on the power transmission line lead is melted, the lead is prevented from being frozen again, and shutdown accidents caused by freezing of a high-voltage power transmission line in rainy and snowy weather are avoided. The utility model is suitable for various power transmission lines including common high-voltage power transmission lines and railway contact lines, and has the advantages of simple structure and high reliability, and is suitable for large-scale popularization and application.

Description

Technical Field

[0001] The utility model relates to the field of power transmission, and particularly relates to a live high-temperature gas path ice melting device. Background Art

[0002] In winter under low-temperature rain and snow weather conditions, it is extremely easy to cause icing on high-voltage transmission lines, which greatly increases the weight of the conductors, causes conductor breakage, tower collapse, and power grid outage. At present, the ice melting methods for high-voltage transmission lines are AC short-circuit ice melting and DC short-circuit ice melting methods. Both of these ice melting methods must stop the operation of the high-voltage transmission line before ice melting can be carried out, which affects the power supply reliability of the power grid. At the same time, the operation difficulty is large and the risk is high. And large-scale ice and snow weather has also paralyzed the power grids in many places and caused large-scale power outages in many places. There is still a lack of a non-stop power ice melting technology that can be widely used for high-voltage transmission lines. Once the high-voltage transmission line is iced, power must still be cut off for ice melting, and there is still a risk of forced outage of the transmission line and large-scale power outage accidents.

[0003] A similar situation also occurs in railway catenaries (including high-speed railway catenaries). Once the railway catenary is iced, high-speed EMUs, electric locomotives, etc. will all be forced to stop operating and can only resume after manual knocking to remove ice. Moreover, the railway catenary will ice again after manual knocking to remove ice. At the same time, the labor cost required for manual knocking to remove ice is extremely high, and there is also damage to the catenary.

[0004] Therefore, all kinds of transmission lines are urgently in need of a device that can melt the ice on the conductor without power interruption, so that the high-voltage power grid can operate normally in ice and snow weather and ensure the power supply for people's livelihood in ice and snow weather. Content of the Utility Model

[0005] In order to solve the technical problem that the current transmission line freezes in low-temperature rain and snow weather and affects normal operation, and there is currently no non-stop power ice melting technical solution that can be widely used. The utility model provides a live high-temperature gas path ice melting device that can safely heat the transmission line without power interruption.

[0006] In order to achieve the above technical purpose, the technical solution of the utility model is as follows.

[0007] A live high-temperature gas path ice melting device includes a high-temperature gas generating device, a main gas transmission pipe, a hollow composite insulator, at least two gas transmission branch pipes, and a pipe fixing member.

[0008] The high-temperature gas generating device is arranged near the transmission line; the hollow composite insulator is fixed on the tower of the transmission line, and one end is connected to the high-temperature gas generating device through the main gas transmission pipe, and the other end is respectively connected to each gas transmission branch pipe.

[0009] The gas transmission branch pipes are fixed to the conductors of the power transmission line through pipe fixing members, and the extending directions of each gas transmission branch pipe are different.

[0010] For the described live high-temperature gas path ice melting device, the high-temperature gas generating device includes a high-pressure air pump, a high-pressure air storage tank, and a heating device; the high-pressure air pump pressurizes external air and inputs it into the high-pressure air storage tank; the exhaust port of the high-pressure air storage tank is connected to the main gas transmission pipe; the heating device is arranged inside the high-pressure air storage tank to heat the high-pressure air.

[0011] For the described live high-temperature gas path ice melting device, a heat preservation sleeve is further arranged outside the high-pressure air storage tank to keep the high-pressure air inside the high-pressure air storage tank warm.

[0012] For the described live high-temperature gas path ice melting device, the high-pressure air pump and the heating device are driven by electricity, and the electricity comes from a fuel-powered generator or a low-voltage power distribution line.

[0013] For the described live high-temperature gas path ice melting device, one end of the hollow composite insulator connecting the main gas transmission pipe is provided with a main pipe interface for connecting the main gas transmission pipe, and the other end is provided with the same number of branch pipe interfaces as the gas transmission branch pipes.

[0014] For the described live high-temperature gas path ice melting device, the outer shape of the hollow composite insulator is the same as that of other insulators on the power transmission line.

[0015] For the described live high-temperature gas path ice melting device, both the main gas transmission pipe and the gas transmission branch pipes include an insulating outer wall; and a hollow iron pipe is further arranged inside the outer wall of the gas transmission branch pipe as an inner layer to form a double-layer structure including the outer wall and the inner layer.

[0016] For the described live high-temperature gas path ice melting device, the thickness of the gas transmission branch pipe gradually becomes thinner starting from the end connected to the hollow composite insulator.

[0017] For the described live high-temperature gas path ice melting device, the power transmission line is a high-voltage power transmission line, and the pipe fixing member is a sheet-shaped body with a cross-section in a 'U' shape to fix the gas transmission branch pipe and the power transmission line by surrounding them from bottom to top. Two perforations corresponding in position are opened on both side walls of the top opening of the pipe fixing member, and the pipe fixing member bolt passes through the two perforations and cooperates with a nut to close the opening.

[0018] The described charged high-temperature gas path ice melting device, the transmission line is a railway contact line, the pipe fixing part is a contact wire suspension clamp on the contact line suspension, and a space for accommodating the gas distribution branch pipe is left between the lower end head for clamping the contact wire and the middle fixing bolt of the contact wire suspension clamp. The gas distribution branch pipe passes through the space between the lower end head and the middle fixing bolt to be arranged above the contact wire.

[0019] The technical effect of the present utility model is that the present utility model generates high-pressure air through a high-pressure air pump and stores it in a high-pressure air storage tank. After the heating device heats the high-pressure air, it is then transmitted to the gas distribution branch pipe pre-installed on the transmission line conductor through the main gas transmission pipe and the hollow composite insulator in sequence, so that the gas distribution branch pipe generates heat and conducts the heat to the transmission line conductor, thereby melting the ice on the transmission line conductor and preventing the conductor from icing again, and avoiding the outage accident caused by icing of the high-voltage transmission line due to rain, snow and other weather. This device is applicable to various transmission lines including ordinary high-voltage transmission lines and railway contact lines (including high-speed rail contact lines), and has a simple structure and high reliability, and is suitable for large-scale popularization and use.

[0020] The following further explains the present utility model with reference to the accompanying drawings. Brief Description of the Drawings

[0021] Figure 1 It is a schematic structural diagram of Embodiment 1 of the present utility model.

[0022] Figure 2 It is a schematic structural diagram of the composite insulator of Embodiment 1 of the present utility model.

[0023] Figure 3 It is an overall schematic diagram of the gas pipe fixing clamp of Embodiment 1 of the present utility model.

[0024] Figure 4 It is a side schematic diagram of the gas pipe fixing clamp of Embodiment 1 of the present utility model.

[0025] Figure 5 It is a schematic structural diagram of Embodiment 2 of the present utility model.

[0026] Figure 6 It is a schematic structural diagram of the composite insulator of Embodiment 2 of the present utility model.

[0027] Figure 7 It is an overall schematic diagram of the suspension of Embodiment 2 of the present utility model.

[0028] Figure 8 It is a side schematic diagram of the suspension of Embodiment 2 of the present utility model.

[0029] Among them, 1 is a high-pressure air pump, 2 is an electric motor, 3 is a high-pressure air storage tank, 4 is a heat-insulating jacket, 5 is a heating device, 6 is a main gas transmission pipe, 7 is a hollow composite insulator, 8 is a gas transmission branch pipe, 9 is a pipe fixing member, 10 is a pole of a transmission line, 11 is a conductor of a transmission line, 12 is an insulator of a transmission line, 13 is the main pipe interface of the hollow composite insulator, 14 is the installation base of the hollow composite insulator, 15 is the installation bolt hole of the hollow composite insulator, 16 is the umbrella skirt of the hollow composite insulator, 17 is the branch pipe interface of the hollow composite insulator, 18 is a pipe fixing member, 19 is a contact line suspension, 20 is a railway contact line support, 21 is a railway contact line, 22 is a contact line suspension clamp, 23 is the steel stranded wire of the contact line suspension, 24 is the crimping tube of the contact line suspension, 25 is the wire rope sling loop of the contact line suspension, 26 is a railway catenary carrier wire, and 27 is the fixing base of the hollow composite insulator. Detailed implementation mode

[0030] Embodiment 1

[0031] See Figure 1-4 , this embodiment includes a high-pressure air pump, a high-pressure air storage tank, a heating device, a heat-insulating jacket, a main gas transmission pipe, a hollow composite insulator, a gas transmission branch pipe and a gas transmission pipe fixing clamp. For the convenience of transportation and use, the high-pressure air pump in this embodiment is installed on the high-pressure air storage tank, where the high-pressure gas generated by the high-pressure air pump is stored in the air tank. The high-pressure air pump is driven by an electric motor, and the electric motor is driven by 380 / 220V alternating current. The power supply of the electric motor can be selected to be provided by a fuel generator or a low-voltage distribution line according to the actual use situation.

[0032] The heating device in this embodiment is installed in the high-pressure air storage tank. The heating device generates heat by inputting 380 / 220V alternating current to heat the air in the high-pressure air storage tank. The heating device in this embodiment adopts a resistance heating device, and the power supply can adopt the same power supply as the high-pressure air pump.

[0033] Since this embodiment is used in a low-temperature icing environment, in order to improve the air heating efficiency and prevent heat loss, this embodiment is provided with a heat-insulating jacket outside the high-pressure air storage tank to insulate the air in the high-pressure air storage tank.

[0034] One end of the main gas transmission pipe in this embodiment is connected to the exhaust port of the high-pressure air storage tank, and the other end is connected to the hollow composite insulator to transmit high-temperature and high-pressure air into the hollow composite insulator.

[0035] The hollow composite insulator in this embodiment has a withstand voltage strength equal to or higher than that of other insulators on high-voltage transmission lines and is installed on the poles of the high-voltage transmission line in a similar manner to other insulators. That is, bolts are passed through the hollow composite insulator mounting bolt holes on the mounting base of the hollow composite insulator to suspend the hollow composite insulator on the mounting beam between the transmission line poles.

[0036] The interior of the hollow composite insulator in this embodiment is hollow to allow high-pressure and high-temperature air to pass through. The hollow composite insulator in this embodiment is installed vertically in the same way as other insulators on high-voltage transmission lines. One end of the mounting base is at the top and is provided with a main pipe interface for connecting the gas transmission main pipe. The other end of the hollow composite insulator in this embodiment, which is at the bottom, is provided with two branch pipe interfaces for connecting two gas transmission branch pipes. The interfaces of the hollow composite insulator should be sealed reliably to prevent water and air from flowing through the hollow part and prevent the insulation of the hollow composite insulator from being reduced and punctured. The outer shape of the hollow composite insulator is the same as that of other insulators and is also provided with the same umbrella skirts as other insulators, which can prevent rainwater from forming a water flow and reducing the insulation strength of the insulator. The hollow composite insulator in this embodiment is suitable for being installed vertically above the conductors of high-voltage transmission lines.

[0037] The gas transmission branch pipes in this embodiment are connected to the branch pipe interfaces of the hollow composite insulator and extended to the conductors of the high-voltage transmission line to transmit the high-pressure and high-temperature air in the high-pressure air storage tank into it and conduct the heat to the conductors of the high-voltage transmission line, causing the temperature of the conductors of the high-voltage transmission line to rise. The insulating outer wall of the gas transmission branch pipe can be made of common insulating materials such as silicone rubber, etc., and has a certain heat preservation property to avoid all the heat of the high-temperature air flow being dissipated near the branch pipe interface. At the same time, a hollow iron pipe is used as the inner layer inside the outer wall of the gas transmission branch pipe, so that the gas transmission branch pipe can better maintain its shape and allow the air flow to pass through the air pipe smoothly.

[0038] The pipe fixing member in this embodiment is a sheet-like body with a cross-section in the shape of a 'U' to fix the gas transmission branch pipe and the transmission line by surrounding them from bottom to top. Two perforations corresponding in position are opened on the two side walls of the top opening of the pipe fixing member, and the pipe fixing member bolts pass through the two perforations and cooperate with nuts to close the opening. Thus, the transmission line and the gas transmission branch pipe are wrapped together to play a role in fixing the gas transmission branch pipe on the transmission line. The gas transmission branch pipe in this embodiment is placed below the transmission line, which is based on the reason that the air around the gas transmission branch pipe will expand and rise after being heated, so as to better de-ice the transmission line.

[0039] In this embodiment, two gas transmission branch pipes are separated from the end of the hollow composite insulator and extend towards both ends of the transmission line respectively. To ensure uniform heating, the total length of the gas transmission branch pipes is preferably 4000 meters, that is, the lengths of the branch pipes at both ends are about 2000 meters. At the same time, considering that the heat will continuously decrease during long-distance transmission, the gas transmission branch pipes gradually become thinner from the end connected to the hollow composite insulator. In this embodiment, the thickness of the insulating outer wall of the gas transmission branch pipe in the section from the outlet of the hollow composite insulator to 1000 meters is about 2 - 3 millimeters, the thickness of the insulating outer wall in the section from 1000 meters to 1800 meters is about 1 - 2 millimeters, and the thickness of the insulating outer wall in the section from 1800 meters to 2000 meters is about 1 millimeter.

[0040] Embodiment 2

[0041] See Figure 5-8 , this embodiment is arranged based on the railway catenary. The specific structure of this embodiment is similar to that of Embodiment 1, but the setting form of the hollow composite insulator, the arrangement form of the gas transmission branch pipes, and the pipe fixing parts are different from those of Embodiment 1.

[0042] In this embodiment, the hollow composite insulator is horizontally installed in a form similar to other insulators on the railway catenary. One end of the hollow composite insulator with an installation base is fixed to the pole tower of the transmission line through the fixed base of the hollow composite insulator. In this embodiment, the fixed base of the hollow composite insulator includes an annular fixing part surrounding the pole tower and a protrusion extending from the annular fixing part, and the installation base of the hollow composite insulator is fixed on the protrusion.

[0043] The catenary suspension of this embodiment has a structure basically the same as that of a common catenary suspension. The upper end is hung on the railway catenary carrier cable, and the middle steel stranded wire surrounds the wire rope sling through a crimping tube to be hoisted below the upper end. The lower end is tightened by a screw and clamped in the groove of the contact wire to lift the contact wire. And the pipe fixing part of this embodiment is a catenary suspension clip. A space is reserved in the middle of the catenary suspension clip for the gas transmission branch pipe to pass through, and the gas transmission branch pipe is fixed above the contact wire.

[0044] Since the lower part of the contact wire needs to be in direct contact with the pantograph of the train for power supply, the gas transmission branch pipe of this embodiment is fixed above the contact wire, and other settings are similar to those of Embodiment 1.

Claims

1. An electric high-temperature gas circuit ice melting device, characterized in that: It includes a high-temperature gas generating device, a gas transmission main pipe, a hollow composite insulator, at least two gas transmission branch pipes and pipeline fixings; The high-temperature gas generating device is arranged near the power transmission line; the hollow composite insulator is fixed on the tower of the power transmission line, the interior of the hollow composite insulator is a cavity for passing the high-temperature gas, and one end of the hollow composite insulator is connected to the high-temperature gas generating device through the gas transmission main pipe, and the other end is respectively connected to each gas transmission branch pipe; The gas transmission branch pipes are fixed on the conductors of the power transmission line through pipeline fixings, and the extension direction of each gas transmission branch pipe is different.

2. The electric high-temperature gas circuit ice melting device according to claim 1, characterized in that: The high-temperature gas generating device includes a high-pressure air pump, a high-pressure air storage tank and a heating device; the high-pressure air pump pressurizes the external air and inputs it into the high-pressure air storage tank; the exhaust port of the high-pressure air storage tank is connected to the gas main; the heating device is arranged in the high-pressure air storage tank to heat the high-pressure air.

3. The electric high-temperature gas circuit ice melting device according to claim 2, characterized in that: The high-pressure air storage tank is also provided with a heat-insulating sleeve outside to keep the high-pressure air in the high-pressure air storage tank warm.

4. The electric high-temperature gas circuit ice melting device according to claim 2, characterized in that: The high-pressure air pump and the heating device are driven by electricity, and the electricity comes from a fuel-fired generator or a low-voltage distribution line.

5. The electric high-temperature gas circuit ice melting device according to claim 1, characterized in that: One end of the hollow composite insulator connected to the gas main is provided with a main pipe interface for connecting to the gas main, and the other end is provided with branch pipe interfaces with the same number as the gas branch pipes.

6. The electric high-temperature gas circuit ice melting device according to claim 1, characterized in that: The appearance of the hollow composite insulator is consistent with that of other insulators on the transmission line.

7. The electric high-temperature gas circuit ice melting device according to claim 1, characterized in that: The main gas transmission pipe and the branch gas transmission pipe both include an insulating outer wall; and a hollow iron pipe is also provided inside the outer wall of the branch gas transmission pipe as an inner layer to form a double-layer structure including an outer wall and an inner layer.

8. The electric high-temperature gas circuit ice melting device according to claim 1, characterized in that: The thickness of the gas transmission branch pipe gradually becomes thinner from the end connected to the hollow composite insulator.

9. The electric high-temperature gas circuit ice melting device according to claim 1, characterized in that: The transmission line is a high-voltage transmission line, and the pipeline fixing part is a sheet-like body with a "U"-shaped cross-section, which surrounds the gas transmission pipe and the transmission line from bottom to top for fixing. Two corresponding through holes are opened on the two side walls of the top opening of the pipeline fixing part, and the pipeline fixing part bolt passes through the two through holes and cooperates with the nut to close the opening.

10. The electric high-temperature gas circuit ice melting device according to claim 1, characterized in that: The power transmission line is a railway contact line, and the pipeline fixing part is a contact line suspension string clamp on the contact line suspension string. The contact line suspension string clamp leaves a space for accommodating a gas transmission branch pipe between the lower end head and the middle fixing bolt for clamping the contact line. The gas transmission branch pipe passes through the space between the lower end head and the middle fixing bolt to be arranged above the contact line.

Images