CN108599066B - Tubular bus fitting for converter valve hall and converter valve hall - Google Patents

Abstract

The invention relates to a tubular bus fitting for a converter valve hall and the converter valve hall. The converter valve hall comprises a hall room and a converter valve tower arranged in the hall room, wherein the wire outlet end of the converter valve tower is connected with at least one telescopic structure, the telescopic structure comprises two first pipe nuts and a connecting unit, the back ends of the two first pipe nuts are used for being connected with two devices in a one-to-one correspondence mode, the near ends of the two first pipe nuts are rotatably assembled with the connecting unit to form a zigzag telescopic structure, the rotating axes of the two first pipe nuts and the connecting unit extend along the direction perpendicular to the plane of the two first pipe nuts, and the first pipe nuts and/or the connecting unit are provided with suspension structures used for suspending the two first pipe nuts and the connecting unit in the direction perpendicular to the plane of the two first pipe nuts. The pipe mother metal tool realizes the anti-seismic decoupling between the devices, and ensures that each device is not damaged under the action of high-intensity earthquake.

Description

A kind of pipe mother fitting for valve hall of converter valve and valve hall of converter valve

technical field

The invention relates to the technical field of metal fittings, in particular to a pipe mother fitting for a valve hall of a converter valve and a valve hall of a converter valve.

Background technique

With the development of UHV DC transmission technology, DC transmission has played a huge role in the composition of the power grid with its own unique advantages, especially in the "West-to-East Power Transmission". The southwest region, which is a source of electricity, is located in an earthquake-prone area, and the safety of related electrical equipment under the action of earthquakes needs to be paid attention to. Converter valves, insulators, arresters and tube mothers are important equipment in ultra-high voltage and ultra-high voltage DC transmission systems, commonly known as valve hall systems. The overall seismic performance of valve hall systems under earthquake action is the key to ensure the safe and reliable operation of power transmission systems.

At present, the valve hall system equipment is often connected by pipe mothers, flexible wires and flexible hinges, and the commonly used connection methods can only meet the seismic requirements of relatively low seismic intensity. With the increase of transmission voltage level and the limitation of geographical location, more and more projects put forward the fortification requirements of higher seismic intensity. The use of this seismic hardware can satisfy the free swing of the equipment under the action of earthquake, and realize the solution with the surrounding connected equipment. Under the premise of satisfying electrical insulation under the action of high-intensity earthquake, each device can swing freely and reduce the stress of connecting terminals, thus ensuring that each device will not be damaged under the action of high-intensity earthquake.

Such anti-seismic fittings used for converter valve halls in the prior art, such as a tube parent fitting for a converter station valve hall disclosed in the patent application specification with the patent publication number CN107611890A, the tube parent fitting includes two The first tube mother, one end of the two first tube mothers is used for one-to-one docking with the two devices, and the other ends are hinged into one with the connection unit respectively. The connection unit includes a conductive structure, and the two first tube mothers are close to one end of the connection unit. They are all connected with the conductive structure through wires, and the connecting unit is provided with a voltage equalizer for connecting with the uniform electric field. When the parent pipe fittings are subjected to horizontal displacement by the earthquake, the two first parent fittings can move away from and approach each other through the hinge point; when the parent pipe fittings are subjected to vertical displacement by the earthquake, the connecting unit can deform to allow the two A first tube mother moves in a vertical direction. However, when the tube parent fitting is subjected to a high-intensity earthquake and has a large vertical shake, the tube parent fitting needs to overcome the action of gravity to expand and contract, and it is easy to cause damage to the suspension rope if used for a long time; and the tube parent fitting is subjected to high-intensity earthquake action. When a large shaking occurs in the horizontal direction, since the shaking amplitude of one of the first tube mothers is greater than that of the other first tube mother, the connecting unit is likely to bend under the extrusion of the two first tube mothers. Deformation, resulting in damage to the tube and mother fittings, thereby causing damage to the equipment connected to the tube and mother fittings.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a metal fitting for the valve hall of a converter valve, which solves the problem that the parent fitting of the existing converter valve is easily damaged when subjected to a high-intensity earthquake; the purpose of the present invention is to provide The utility model relates to a converter valve valve hall for installing the above-mentioned converter valve valve hall with a pipe mother fitting.

In order to achieve the above-mentioned purpose, the technical scheme of the pipe mother fitting for the valve hall of the converter valve of the present invention is:

A pipe mother fitting for a valve hall of a converter valve comprises two first pipe mothers and a connecting unit, the opposite ends of the two first pipe mothers are used for one-to-one connection with two devices, and the two first pipe mothers The proximal end of the female and the connecting unit are rotated and assembled to form a "zigzag" telescopic structure. The rotation axes of the two first female pipe and the connecting unit extend in a direction perpendicular to the plane where the two first female pipe are located. A suspension structure for suspending the two first pipe mothers and the connecting unit in a direction perpendicular to the plane where the two first pipe mothers are located is arranged on the pipe mother and/or the connecting unit.

Beneficial effects: when the converter valve hall uses the tube head fitting of the present invention, because the tube head fitting includes two first tube mothers, and the two first tube mothers are respectively rotated and assembled with the connecting unit and connected into one body. When the pipe mother fitting of the present invention is used, it is suspended in the valve hall through a suspension structure, and the suspension structure extends in a direction perpendicular to the plane where the two first pipe mothers are located. When the valve hall of the converter valve is subjected to a high-intensity earthquake, the two The end of the first tube socket connected to the equipment can be moved away from and approached by rotating with the connecting unit, and the tube socket fittings do not need to overcome gravity when moving, which can effectively prevent the tube socket fittings from being damaged during movement and help protect the suspension. hanging structure. When the equipment connected to the tube-mother fittings shakes, the two first tube-mothers can move away or approach according to the distance between the devices, which effectively prevents the connection between the devices from being broken and damaged when the devices are shaking.

Specifically, there are two suspension structures, and the two suspension structures are located at the positions of the connecting unit and the rotation axes of the two first tube mothers respectively. There are two suspension structures, and the suspension structures are located at the rotation axis, which enhances the suspension strength of the suspension structures to the tube and mother fittings.

When there are two suspension structures, the assembling manner of the first female tube and the connecting unit is further limited, and the connecting unit and the first female tube are rotatably assembled through a hinge mechanism. The connecting unit and the first female tube are rotated and assembled by a hinge mechanism, which helps to enhance the rotation effect of the connecting unit and the first female tube.

When the first pipe female and the connecting unit are assembled by a hinge mechanism, the suspension structure is located on the central axis of the hinge mechanism. It is beneficial to prevent the suspension rope from rotating with the hinge mechanism, thereby helping to enhance the suspension strength.

When there are two suspension structures, shielding covers for pressure equalization are provided on both sides of the hinge mechanism extending along its axis. Setting a shielding cover helps to make the electric field uniform in the rotating position and enhances the safety.

For a further improvement of the above technical solution, the connecting unit is a second pipe female. The connection unit adopts the tube mother, which helps to enhance the overall strength of the tube and mother fittings.

For the further improvement of the connection method between the tube-mother fitting and the connecting unit, the end of the first tube-mother connected to the connection unit is provided with a soft connection for compensating the displacement of the first tube-mother in the horizontal and vertical directions. The soft connection enhances the safety of the use of the tube and mother fittings.

The technical scheme of the valve hall of the converter valve of the present invention is:

A converter valve valve hall includes a hall chamber and a converter valve valve tower installed in the hall chamber, the outlet end of the converter valve valve tower is connected with at least one telescopic structure, and the telescopic structure includes two first pipes A female and a connecting unit, the opposite ends of the two first pipe females are used for one-to-one connection with the two devices, and the adjacent ends of the two first pipe females are rotated and assembled with the connecting unit to form a "zigzag" telescopic structure , the rotation axes of the two first pipe mothers and the connecting unit both extend in a direction perpendicular to the plane where the two first pipe mothers are located, and the first pipe mother and/or the connecting unit is provided with a A suspension structure for suspending two first pipe mothers and connecting units in the direction of the plane where the pipe mother is located.

Beneficial effects: When the valve hall of the present invention is used in the converter station, since the pipe mother fittings include two first pipe mothers, and the two first pipe mothers are respectively rotatably assembled and connected with the connecting unit. When the pipe mother fitting of the present invention is used, it is suspended in the valve hall through a suspension structure, and the suspension structure extends in a direction perpendicular to the plane where the two first pipe mothers are located. When the valve hall of the converter valve is subjected to a high-intensity earthquake, the two The end of the first tube socket connected to the equipment can be moved away from and approached by rotating with the connecting unit, and the tube socket fittings do not need to overcome gravity when moving, which can effectively prevent the tube socket fittings from being damaged during movement and help protect the suspension. hanging structure. When the equipment connected to the tube-mother fittings shakes, the two first tube-mothers can move away or approach according to the distance between the devices, which effectively prevents the connection between the devices from being broken and damaged when the devices are shaking.

Specifically, two adjacent telescopic structures share a first tube mother that is close to each other. It helps to reduce the displacement of the suspension rope in the horizontal direction, thereby improving the suspension strength of the suspension rope.

The suspension structures are further defined, and the number of the suspension structures is two, and the two suspension structures are located at the positions of the connecting unit and the rotation axes of the two first tube mothers, respectively. There are two suspension structures, and the suspension structures are located at the rotation axis, which enhances the suspension strength of the suspension structures to the tube and mother fittings.

When there are two suspension structures, the assembling manner of the first female tube and the connecting unit is further limited, and the connecting unit and the first female tube are rotatably assembled through a hinge mechanism. The connecting unit and the first female tube are rotated and assembled by a hinge mechanism, which helps to enhance the rotation effect of the connecting unit and the first female tube.

When the first pipe female and the connecting unit are assembled by a hinge mechanism, the suspension structure is located on the central axis of the hinge mechanism. It is beneficial to prevent the suspension rope from rotating with the hinge mechanism, thereby helping to enhance the suspension strength.

When there are two suspension structures, shielding covers for pressure equalization are provided on both sides of the hinge mechanism extending along its axis. Setting a shielding cover helps to make the electric field uniform in the rotating position and enhances the safety.

For a further improvement of the above technical solution, the connecting unit is a second pipe female. The connection unit adopts the tube mother, which helps to enhance the overall strength of the tube and mother fittings.

For the further improvement of the connection method between the tube-mother fitting and the connecting unit, the end of the first tube-mother connected to the connection unit is provided with a soft connection for compensating the displacement of the first tube-mother in the horizontal and vertical directions. The soft connection enhances the safety of the use of the tube and mother fittings.

Description of drawings

Fig. 1 is the connection relation diagram of the converter valve valve tower and the pipe mother fitting of the first embodiment of the converter valve valve hall of the present invention;

Fig. 2 is the structural representation of the tube mother fitting in Fig. 1;

Fig. 3 is the top view of the tube mother fitting in Fig. 2;

Fig. 4 is the state diagram when the tube and mother fittings in Fig. 2 are compressed;

Fig. 5 is the state diagram when the tube and mother fittings in Fig. 2 are stretched;

Fig. 6 is the structural representation of the metal fitting in Fig. 5;

Fig. 7 is the enlarged view of A place in Fig. 6;

FIG. 8 is a schematic structural diagram of the tube and mother fittings of the second embodiment of the valve hall of the converter valve of the present invention;

In the attached drawings: 1. Valve tower of converter valve; 2. Tube mother fittings; 3. First tube mother; 4. Shield cover; 5. Second tube mother; 6. Hinge mechanism; 7. Soft connection; Hang the insulator.

Detailed ways

The embodiments of the present invention will be further described below with reference to the accompanying drawings.

The specific embodiment 1 of the converter valve valve hall of the present invention, as shown in FIG. 1 to FIG. 7 , the valve hall is used for high-voltage DC power transmission, flexible DC power transmission, high-voltage circuit breakers and other high-power power electronic equipment suspended converters Valve hall of valve tower 1. The converter valve hall includes a hall room and a converter valve valve tower 1 installed in the hall room. The valve hall includes the main body of the building and a steel beam fixed at the top. The steel beam has suspension points for suspending the valve tower 1 of the converter valve. The suspension points are multiple and uniformly arranged along the length of the steel beam. Because the converter valve valve hall encounters an earthquake, the converter valve valve tower 1 in the valve hall and the electrical equipment connected to the converter valve valve tower 1 will relatively shake. The pipe fittings 2 in the present invention are respectively connected between the valve tower 1 of the converter valve and the related equipment. When the valve tower shakes due to an earthquake, the pipe fittings 2 can compensate for the converter valve tower 1 by expanding and contracting themselves. And the relative displacement caused by the relative sloshing between the electrical equipment connected to the valve tower 1 of the converter valve.

Specifically, the tube-mother fitting 2 includes two first tube-mothers 3 , which are arranged in parallel, and the two first tube-mothers 3 are connected by the second tube-mother 5 to form a Z-shaped telescopic structure. . The two first tube mothers 3 are assembled with the second tube mother 5 in rotation, so that the two first tube mothers 3 can be rotated with the second tube mother 5 to allow the two first tube mothers 3 to deviate from the second tube mother. 5. The distance of one end of the rotating assembly changes, so as to realize the expansion and contraction of the fittings on the converter valve tower 1 and the electrical equipment connected to the converter valve tower 1, so as to prevent the converter valve hall from being damaged by the converter valve when it encounters an earthquake. The valve tower 1 and the electrical equipment connected to the valve tower 1 of the converter valve swayed, resulting in the breakage of the connecting line. The rotation axes of the first female tube 3 and the second female tube 5 extend in the direction perpendicular to the planes where the two first female tube 3 are located. The first tube mother 3 expands and contracts in the plane where the first tube mother 3 is located.

The first female pipe 3 and the second female pipe 5 are rotated and assembled through the hinge mechanism 6. It is understood that the first female pipe 3 and the second female pipe 5 can also be implemented by hinged connection to those skilled in the art. The first female tube 3 and the second female tube 5 are rotatably assembled through the hinge mechanism 6, so that the rotation range of the first female tube 3 and the second female tube 5 is relatively large. As shown in Fig. 4 and Fig. 5, when the tube-core fitting 2 is in a compressed state, the angle between the first tube-core 3 and the second tube-core 5 is an acute angle, and when the tube-core fitting 2 is in a tension state, the first tube The included angle between the female 3 and the second female 5 is an obtuse angle. It should be noted that when the tube-mother fittings 2 are in a compressed state and a tension state, the two first tube-mothers 3 are kept horizontal. The converter valve tower 1 and related equipment are kept at a certain distance, thereby helping to enhance the safety of the converter valve tower 1 and related equipment.

The first female tube 3 and the second female tube 5 are connected by a soft connection 7, and those skilled in the art can understand that this design is used to compensate for the displacement of the first female tube 3 in the horizontal and vertical directions. It should be noted that the flexible connection 7 can be a hose, an insulated sheath wire, a metal stranded wire, a metal soft woven bag, a metal soft strip, and the like.

In addition, in this embodiment, the hinge mechanism is installed with shielding covers 4 on both sides along its axis. The function of the shielding cover 4 is to make the electric field of the tube and mother fittings 2 at the rotating position more uniform. It can be understood that the shielding cover 4 It is made of metal, and its size and shape can be determined according to the displacement under earthquake action and the insulation requirements of different voltage levels.

When the pipe fitting 2 in this embodiment is used, the pipe fitting 2 is suspended in the valve hall by the suspension insulator 8, and one of the two first pipe fittings 3 in the pipe fitting 2 is connected to the converter valve valve. The outlet end of the tower 1 is connected, and the other is connected with the electrical equipment connected to the converter valve valve tower 1. When the valve hall of the converter valve encounters a high-intensity earthquake, the two first tube mothers 3 and the second tube mother 5 move relatively, effectively ensuring that the equipment is not damaged.

The specific embodiment 2 of the converter valve valve hall of the present invention is different from the first embodiment in that the converter valve valve tower in this embodiment is connected with two "zigzag" telescopic structures. Of course, in other implementations In the example, the number of telescopic structures can also be any number such as three, four, five, and six. The telescopic structure includes two first pipe mothers and a second pipe mother rotatably assembled with the two first pipe mothers, and the two telescopic structures share a first pipe mother that is close to each other. Others are the same as those in the first embodiment, and are not repeated here.

The embodiments of the pipe fittings for the valve hall of the converter valve of the present invention have the same structure as the pipe fittings in the above-mentioned embodiments of the valve hall of the converter valve, and will not be described again.

Claims (9)

1. The utility model provides a female gold utensil of pipe for converter valve room, includes that two first tub of mother and second are managed mother, two female back of the body end of first tub is used for being connected its characterized in that with two equipment one-to-ones: the near ends of the two first tube nuts and the second tube nut are rotatably assembled to form a zigzag telescopic structure, the rotating axes of the two first tube nuts, which are respectively connected with the two ends of the second tube nut, extend along the direction perpendicular to the plane of the two first tube nuts, and the first tube nuts are provided with a suspension structure for suspending the two first tube nuts and the second tube nuts in the direction perpendicular to the plane of the two first tube nuts; one end of the first pipe bus connected with the second pipe bus is provided with a flexible connection for compensating the displacement of the first pipe bus in the horizontal and vertical directions; when the pipe mother metal tool is in a compression state and a stretching state, the two first pipe mothers are kept horizontal; the second pipe is arranged above the two first pipes, the first pipes are connected with the second pipes through flexible connections, the flexible connections extend up and down, the flexible connections extend upwards to be connected with the second pipes, the flexible connections extend downwards to be connected with the first pipes, the second pipes are parallel to the plane where the two first pipes are arranged, the two suspension structures are two, and the two suspension structures are respectively arranged at the positions of the rotation axes of the second pipes and the two first pipes.

2. The tubular bus fitting for a converter valve hall according to claim 1, characterized in that: the second pipe nut and the first pipe nut are rotatably assembled through a hinge mechanism.

3. The tubular bus fitting for a converter valve hall according to claim 2, characterized in that: the suspension structure is located on the central axis of the hinge mechanism.

4. The tubular bus fitting for a converter valve hall according to claim 3, characterized in that: the two sides of the hinge mechanism extending along the axis are provided with shielding covers for voltage sharing.

5. The utility model provides a converter valve room, includes hall room and installs the converter valve tower in the hall room, the leading-out terminal of converter valve tower is connected with at least one extending structure, extending structure includes that two first pipes are female and the second is female, two female back of the body end of carrying on the back of the body of first pipe is used for being connected its characterized in that with two equipment one-to-ones: the near ends of the two first tube nuts and the second tube nut are rotatably assembled to form a zigzag telescopic structure, the rotating axes of the two first tube nuts, which are respectively connected with the two ends of the second tube nut, extend along the direction perpendicular to the plane of the two first tube nuts, and the first tube nuts are provided with a suspension structure for suspending the two first tube nuts and the second tube nuts in the direction perpendicular to the plane of the two first tube nuts; one end of the first pipe bus connected with the second pipe bus is provided with a flexible connection for compensating the displacement of the first pipe bus in the horizontal and vertical directions; when the pipe mother metal tool is in a compression state and a stretching state, the two first pipe mothers are kept horizontal; the second pipe is arranged above the two first pipes, the first pipes are connected with the second pipes through flexible connections, the flexible connections extend up and down, the flexible connections extend upwards to be connected with the second pipes, the flexible connections extend downwards to be connected with the first pipes, the second pipes are parallel to the plane where the two first pipes are located, the two suspension structures are two, and the two suspension structures are located at the positions of the rotation axes of the second pipes and the two first pipes respectively.

6. The converter valve hall of claim 5 wherein: two adjacent telescopic structures share a first pipe nut which is close to each other.

7. The converter valve hall of claim 6 wherein: the second pipe nut and the first pipe nut are rotatably assembled through a hinge mechanism.

8. The converter valve hall of claim 7 wherein: the suspension structure is located on the central axis of the hinge mechanism.

9. The converter valve hall of claim 8 wherein: the two sides of the hinge mechanism extending along the axis are provided with shielding covers for voltage sharing.

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