CN206332416U - A kind of current conversion station slides/be fixedly connected excessively stream with pipe mother and static contact fixes gold utensil - Google Patents

Abstract

The utility model discloses a pipe nut slide/fixed connection overcurrent and static contact fixing hardware for a converter station. Including the overcurrent fitting assembly, the support connecting frame assembly, the sliding/fixed rod assembly and the static contact fixing frame; the two ends of the overcurrent fitting assembly are used to connect the pipe busbar and the equipment terminal to realize the overcurrent connection between the pipe busbar and the equipment; The supporting connecting frame assembly is used to connect the equipment terminal and the sliding/fixed rod assembly; the sliding/fixed rod assembly includes a connecting rod, one end of the connecting rod is provided with an insulating slide plate and extends into the pipe busbar, and the other end is connected with the supporting connecting frame assembly The connecting rod is covered with an insulating sliding sleeve, and one end of the insulating sliding sleeve is fixed to one end of the pipe busbar; the insulating sliding sleeve is provided with a threaded hole, and the connecting rod is provided with a blind hole corresponding to the position of the threaded hole; The two ends of the static contact fixing frame are connected with the equipment and the static contact. The fixing hardware of the utility model can realize overcurrent and mechanical connection, and one end thereof is installed on the terminal of the equipment, and can be shielded by the anti-halo ring on the equipment.

Description

A pipe nut sliding/fixed connection overcurrent and static contact fixing fitting for a converter station

technical field

The utility model relates to a pipe nut sliding/fixed connection overcurrent and static contact fixing fitting for a converter station, which belongs to the field of flexible DC transmission line engineering.

Background technique

Flexible DC transmission technology is a new type of DC transmission technology based on voltage source converters, turn-off devices and pulse width modulation technology, and is an important equipment for building smart grids. Compared with traditional methods, flexible direct current transmission technology has the advantages of high controllability, convenient design and construction, small footprint and no communication between converter stations, etc. It has strong technical advantages in terms of large-scale wind farm grid connection, etc., and is a strategic choice to change the development pattern of large power grids. Moreover, flexible direct current transmission can carry clean energy such as wind energy and solar energy from multiple sites, and reach the load centers of multiple cities through large-capacity, long-distance power transmission channels, which provides new energy for grid connection and power supply in large cities. an effective solution. Therefore, this power transmission technology is favored by countries all over the world. With the rapid development of new energy sources, the market demand for flexible DC power transmission technology will be even wider.

As a new generation of DC transmission technology, flexible DC transmission technology is similar in structure to HVDC transmission, and is still composed of converter stations and DC transmission lines. The converter station is an integral part of it. It is responsible for the important responsibility of AC and DC conversion. There are many devices in the station and the electrical connection is complicated. The distribution of the surface electric field is more deformed, and the local field strength is too high to cause corona discharge. Therefore, in addition to meeting the requirements of mechanical strength and overcurrent, the fittings of the converter station must also withstand the long-term test of electrical performance.

Utility model content

The purpose of this utility model is to provide a tube nut slide/fixed connection overcurrent and static contact fixing fittings for a converter station. Problems such as overcurrent, mechanical connection and anti-corona between the female, static contact and equipment.

In order to achieve the above purpose, the utility model provides a ±320kV converter station pipe bus sliding/fixed connection overcurrent and static contact fixing hardware, which is installed between the pipe bus and the equipment to realize the connection between the pipe bus and the equipment. The overcurrent connection and the fixed installation of the static contact of the ground knife meet the requirements of anti-coronavirus.

The utility model provides a sliding/fixed connection overcurrent and static contact fixing fitting for a converter station, including an overcurrent fitting component, a supporting connection frame component, a sliding/fixing rod component and a static contact fixing frame;

The two ends of the overcurrent fitting assembly are used to connect the pipe busbar and the equipment terminal to realize the overcurrent connection between the pipe busbar and the equipment;

The support connector assembly is used to connect the equipment terminal and the sliding/fixed rod assembly;

The sliding/fixed rod assembly includes a connecting rod, one end of the connecting rod is provided with an insulating slide plate and extends into the pipe busbar, and the other end is connected with the supporting connecting frame assembly; the connecting rod is sleeved There is an insulating sliding sleeve, and one end of the insulating sliding sleeve is fixed to one end of the pipe bus; the insulating sliding sleeve is provided with a threaded hole, and the connecting rod is provided with a blind hole corresponding to the position of the threaded hole. hole;

The two ends of the static contact fixing frame are connected to the equipment and the static contact;

An anti-halation ring is provided at the end of the static contact fixing frame connected to the static contact.

In the fixed fittings, the over-current fitting assembly includes equipment over-current fittings, aluminum stranded wires and a tube mother over-current fitting body;

The aluminum stranded wire is arc-shaped;

The two ends of the aluminum stranded wire are respectively connected with the equipment overcurrent fittings and the body of the tube mother overcurrent fittings.

In the fixing fitting, the end of the fitting body at the end of the tube female is provided with a mounting hole for fixing the insulating sliding sleeve.

In the said fixing hardware, the support connector assembly includes a connected support connector body and a connector;

The support connector body is connected to the equipment terminal, and the connector is connected to the sliding/fixed rod assembly;

The main body of the supporting connecting frame can be welded to the required angle by using two sections of channel steel with high bending strength. One end of the supporting connecting frame body is connected to the terminal of the equipment with a large hole, and the other end is vertically welded to the skin plate. for soldering the connectors.

In the fixing hardware, the connecting rod and the insulating sliding plate are threaded;

The connecting rod is connected to the support connecting frame assembly.

In the fixing hardware described above, the threaded holes are provided on both ends of the insulating sliding sleeve along the axial direction of the connecting rod.

In the said fixing hardware, the two ends of the insulating sliding sleeve along the axial direction of the connecting rod are provided with the threaded holes for installing the limit screw pin; when the fixing hardware needs to be installed as a fixed During construction, screw the end of the limit threaded pin into the blind hole on the connecting rod, then the insulating sliding sleeve is fixed with the connecting rod; when the fixing hardware needs to be installed as a sliding structure, The end of the limiting threaded pin exits the blind hole on the connecting rod, and the connecting rod can slide in the insulating sliding sleeve, so as to realize the sliding of the pipe busbar in a certain range along the axial direction.

In the fixing hardware, the insulating sliding plate is a nylon sliding plate;

The insulating sliding sleeve is a nylon sliding sleeve.

In the above-mentioned fixing hardware, the static contact fixing frame includes a main board, an upper rib plate, a lower rib plate, an equipment connecting plate and a static contact fixing plate arranged on the main board.

In the fixing fitting, the anti-halo ring includes two symmetrically arranged ring bodies;

The two ring bodies are connected by connecting cross arms;

The anti-halation ring is connected to the static contact fixing frame through a bracket, and the bracket and the static contact are fixed on the static contact fixing frame through a common bolt;

The ring body is a racetrack-shaped ring body.

The utility model convertor station uses a sliding/fixed connection overcurrent and static contact fixing hardware including five parts: an overcurrent fitting assembly, a supporting connection frame assembly, a sliding/fixing rod assembly, an anti-halo ring and a static contact fixing frame . Among them, the overcurrent fitting assembly is used for the overcurrent connection between the pipe busbar and the equipment, and the static contact fixing frame is used for the overcurrent connection between the static contact and the equipment. The supporting connecting frame assembly and the sliding/fixing rod assembly are used for the mechanical connection between the pipe busbar, the static contact and the equipment. The anti-halation ring is used for anti-halation at the end of the static contact fixing frame. Through the installation of these five parts of hardware, the overcurrent and mechanical connection between the busbar, the static contact and the equipment can be realized, and the anti-halation ring on the equipment, The anti-halation ring on the hardware, the smooth transition design of the hardware itself, and the anti-halation of the pure aluminum stranded wire after it is bent into an arc meet the anti-halation requirements of the hardware. The over-current fitting assembly and the static contact fixing frame are used for the over-current connection of the whole set of fittings, and are respectively installed on the bus bar and the equipment to form a diversion channel to realize the over-current connection between the bus bar and the equipment, the static contact and the equipment . The supporting connecting frame assembly is used for the connection between the equipment terminal and the sliding/fixing rod assembly, and is installed on the terminal board of the equipment, and the other side is connected with the sliding/fixing rod assembly through bolts with pin holes. The sliding/fixing rod assembly is used to support the connection between the connecting frame assembly and the pipe busbar, and can be installed in two structural forms, sliding and fixed, according to needs. The anti-halation ring is used for anti-halation at the end of the static contact fixing frame, and is installed on the static contact fixing frame with the same fastening bolt as the static contact. The static contact fixing frame is used for the overcurrent and mechanical connection between the static contact and the equipment. It is installed on the terminal board of the equipment, and the static contact and anti-halo ring 6 are installed on the other end.

Description of drawings

Fig. 1 is a schematic diagram of the sliding/fixed connection over-current and static contact fixing fittings of the tube nut used in the converter station of the present invention (the connection cross arm 25 and the bracket 26 of the anti-halo ring 6 are omitted).

Fig. 2 is a top view of Fig. 1 (expanded in directions B and C).

Fig. 3 is a left side view of Fig. 1 (direction A, others omitted).

Fig. 4 is a schematic diagram of the overcurrent fitting assembly of the utility model for the converter station with sliding/fixed connection overcurrent and static contact fixing fittings.

Fig. 5 is a top view of Fig. 4 (expanded in D direction).

Fig. 6 is a schematic diagram of the supporting connection frame assembly of the pipe nut sliding/fixed connection overcurrent and static contact fixing fittings for the converter station of the present invention.

FIG. 7 is a top view of FIG. 6 .

Fig. 8 is a schematic diagram of the sliding/fixing rod assembly of the pipe nut sliding/fixed connection overcurrent and static contact fixing fittings for the converter station of the present invention.

FIG. 9 is a top view of FIG. 8 .

Fig. 10 is a schematic diagram of the anti-halation ring of the pipe nut sliding/fixed connection overcurrent and static contact fixing fittings for the converter station of the present invention.

FIG. 11 is a top view of FIG. 10 .

Fig. 12 is a left side view of Fig. 10 .

Fig. 13 is a schematic diagram of the static contact fixing frame of the utility model converter station sliding/fixed connection overcurrent and static contact fixing fittings.

Fig. 14 is a top view of Fig. 13 (expansion in direction E).

Fig. 15 is a left side view (section F-F) of Fig. 13 .

The marks in the figure are as follows:

1. Overcurrent fitting assembly; 2. Support connecting frame assembly; 3. Sliding/fixed rod assembly; 4. Busbar; 5. Equipment; 6. Anti-halo ring; 10 fastening bolt B; 11 static contact; 12 equipment overcurrent fittings; 13 pure aluminum stranded wire; 14 tube female overcurrent fittings cover plate; Body; 18 connecting head; 19 connecting rod; 20 nylon sliding sleeve; 21 limit screw pin; 22 nylon sliding plate; 23 damping clamp;

detailed description

The utility model will be further described below in conjunction with the accompanying drawings, but the utility model is not limited to the following embodiments.

As shown in Fig. 1, Fig. 2 and Fig. 3, it is a structural schematic diagram of the pipe bus sliding/fixed connection overcurrent and static contact fixing fittings used in the ±320kV converter station of the utility model, which can realize the pipe bus 4 and the static contact 11 The overcurrent connection with the device 5 meets the requirements of mechanical strength and anti-corona.

The fixing fittings of the utility model are installed between the pipe busbar 4 and the equipment 5, including five parts including the overcurrent fitting assembly 1, the support connecting frame assembly 2, the sliding/fixing rod assembly 3, the anti-halo ring 6 and the static contact fixing frame 7 . Among them, the overcurrent fitting assembly 1 plays the role of guiding flow in the whole set of fittings through the static contact fixing frame 7, and is installed between the busbar 4 and the equipment 5 to form a passage to realize the busbar 4 and the equipment 5 and the static contact 11. The flow between the equipment 5; the support connecting frame assembly 2 and the sliding/fixed rod assembly 3 play the role of mechanical connection in the whole set of fittings, and are installed between the pipe busbar 4 and the equipment 5, which are connected to each other and installed on the pipe The bus bar 4 and the equipment 5 are mechanically connected, and can be installed in two structural forms, sliding and fixed, according to needs. The anti-halation of the whole set of fittings is achieved through the anti-halation ring on the equipment, the anti-halation ring 6 on the fittings, the smooth transition design of the fitting itself, and the anti-halation of the pure aluminum stranded wire 13 after it is bent into an arc, so as to meet the anti-halation requirements of the fittings.

The overcurrent fitting assembly 1 is used for the overcurrent connection between the pipe busbar 4 and the equipment 5, as shown in Fig. Female overcurrent fitting body 15. There are stranded wire welding holes for welding pure aluminum stranded wires 13 on the equipment overcurrent fittings 12 and pipe mother overcurrent fittings body 15, for inserting the ends of pure aluminum stranded wires 13 into them and plug welding them into one. The equipment overcurrent fittings 12 are plate-shaped. Considering the convenience of installing the static contact fixing frame 7 and anti-coronavirus, the wire welding holes are located outside the equipment terminals, so that the installation is convenient and the fitting parts can be covered into the curved arc wires. Inside. An installation hole is reserved at the end head of the pipe nut overflow fitting for installing the nylon sliding sleeve 20 in the sliding/fixing rod assembly 3 .

The support connector assembly 2 is used for the mechanical connection between the terminal of the equipment 5 and the sliding/fixed rod assembly 3, and is the main rigid load-bearing part of the whole set of fittings, as shown in Figure 6 and Figure 7, including the support connector body 17 and the connector 18 . The support connecting frame body 17 is welded into required angles with two sections of channel steel with higher bending strength, one side is punched and equipped with equipment terminals, and the other side is vertically welded with a flat plate for welding the connector 18.

The sliding/fixing rod assembly 3 is used to support the connection between the connecting frame assembly 2 and the pipe busbar 4, as shown in Figure 8 and Figure 9, including a connecting rod 19, a nylon sliding sleeve 20, a limit screw pin 21, and a nylon sliding plate 22 and supporting fasteners. The connecting rod 19 is a steel rod with one end being threaded and the other end being a connecting hole. The threaded side is used to fix the nylon slide plate 22 , and the connecting hole side is connected with the supporting connecting frame assembly 2 by the bolt 8 with pin holes. The nylon sliding plate 22 is installed on the end of the connecting rod 19 and placed in the pipe busbar 4, which has the dual functions of sliding and insulation; the nylon sliding sleeve 20 is set on the connecting rod 19, and is stuck on the seal of the pipe mother overcurrent fitting assembly during installation. The hole reserved on the head also plays a dual role of sliding and insulation. Both sides of the nylon sliding sleeve 20 are designed with threaded holes for installing the limit threaded pin 21 . The corresponding position of the connecting rod 19 is designed with a blind hole matching the position of the threaded hole on the nylon sliding sleeve 20. When the whole set of fittings needs to be installed as a fixed structure, the end of the limit screw pin 21 is screwed into the blind hole on the connecting rod 19. The sliding sleeve 20 and the connecting rod 19 are fixed, and the sliding/fixing rod assembly is defined as a fixed type by the pipe nut overflow fitting assembly; when the whole set of fittings needs to be installed as a sliding structure, the end of the limit screw pin 21 exits the blind hole on the connecting rod 19 , the connecting rod 19 can relatively slide in the nylon sliding sleeve 20, so as to realize the sliding of the pipe busbar 4 in a certain range along the axial direction. Simultaneously the afterbody of connecting rod 19 is designed with draw-in groove, when the damping line needs to be installed in pipe busbar 4, special damping wire clip 23 can be installed in the draw-in groove place of connecting rod 19 afterbody.

The anti-halation ring 6 is used for anti-halation at the end of the static contact fixing frame 7, as shown in FIGS. The ring body 24 is a runway-shaped ring body, which is bent from a hollow ring pipe. There are two symmetrical ring bodies on the left and right sides for shielding and anti-halo. They are welded into one body by connecting the cross arm 25 to ensure that the installation of the two ring bodies is consistent. . The bracket 26 is welded on the other side opposite to the connecting cross arm 25 , and is installed on the static contact fixing frame 7 by sharing the fastening bolt 9 with the static contact 11 .

The static contact fixing frame 7 is used for overcurrent and mechanical connection between the static contact 11 and the equipment 5, and fixes the anti-halo ring 6 at the same time, as shown in Figures 13, 14 and 15, including a main board 27, an upper rib plate 28, equipment Connecting plate 29, lower rib plate 30 and static contact fixing plate 31 are hard aluminum alloy plates with good flow performance and better strength. The main board 27 is designed as an irregular shape according to the relative installation position on the equipment to avoid Turn on the anti-halo ring on device 5. The two main boards are placed in parallel, and the remaining four boards are welded between the two main boards. Among them, there is a large gap between the upper rib plate 28 and the two ends of the main board 27, which is used for easy operation and installation of fasteners during construction and installation. There are mounting holes matching the equipment terminals, and the equipment overcurrent fittings 12 , supporting connector assembly 2 and static contact fixing frame 7 are installed on the terminal board of the equipment 5 by superimposing the fasteners 10 in sequence.

The utility model composes a complete set of fittings through the five parts of the overcurrent fitting assembly 1, the support connecting frame assembly 2, the sliding/fixing rod assembly 3, the anti-halo ring 6 and the static contact fixing frame 7, so as to realize the overcurrent and mechanical connection. One end is installed on the terminal of the device 5 and can be shielded by the anti-halo ring on the device. The pure aluminum stranded wire 13 is bent from the left side of the whole set of fittings to the right side of the arc value, covering most of the fittings in it, and the shape of the fittings parts outside the shielding range of the ring/conductor is designed as a circular arc transition to avoid sharp chamfering Halo prevention, through these three aspects to achieve anti-stunning of metal fittings. The whole set of fittings can not only ensure the overcurrent and mechanical connection between the busbar 4 and the equipment 5, the static contact 11 and the equipment 5, but also enable the busbar 4 to slide in the axial direction, and also make the busbar 5 with a pin hole The bolt 8 rotates on a shaft, and effectively achieves the purpose of preventing dizziness. It is easy to install, detachable, and meets the requirements of engineering performance and construction and installation.

Claims (9)

1. a kind of current conversion station slides/be fixedly connected excessively stream with pipe mother and static contact fixes gold utensil, it is characterised in that：Including excessively stream gold Have component, support connecting frame component, slip/fixation bar assembly and stationary contact head frame；

The two ends of the excessively stream armour clamp assembly are used for connecting tube bus and arrangement terminal is realized between the pipe bus and equipment Excessively stream is connected；

The support connecting frame component is used to connect the arrangement terminal and the slip/fixation bar assembly；

The slip/fixation bar assembly includes connecting rod, and one end of the connecting rod is provided with insulation sliding plate and extends to the pipe In bus, the other end is connected with the support connecting frame component；Insulation sliding sleeve is arranged with the connecting rod, the insulation is slided The one end of the pipe bus is fixed in one end of set；The insulation sliding sleeve is provided with screwed hole, the connecting rod in described The position corresponding position of screwed hole is provided with blind hole；

The two ends of the stationary contact head frame connect the equipment and static contact；

The end for connecting the stationary contact head frame of the static contact is provided with anticorona ring.

2. current conversion station according to claim 1 slides/be fixedly connected excessively stream with pipe mother and static contact fixes gold utensil, its feature It is：The excessively stream armour clamp assembly includes the female excessively stream gold utensil body of equipment excessively stream gold utensil, aluminum stranded conductor and pipe；

The aluminum stranded conductor is curved；

The two ends of the aluminum stranded conductor are connected with the equipment excessively stream gold utensil and the female excessively stream gold utensil body of the pipe respectively.

3. current conversion station according to claim 2 slides/be fixedly connected excessively stream with pipe mother and static contact fixes gold utensil, its feature It is：Mounting hole of the end of the female end metal fitting body of the pipe provided with the fixed insulation sliding sleeve.

4. the current conversion station according to any one of claim 1-3 slides/be fixedly connected excessively stream with pipe mother and static contact is fixed Gold utensil, it is characterised in that：The support connecting frame component includes the support connecting frame body and connector being connected；

The support connecting frame body is connected with the arrangement terminal, the connector and the slip/fixation bar assembly phase Connection.

5. the current conversion station according to any one of claim 1-3 slides/be fixedly connected excessively stream with pipe mother and static contact is fixed Gold utensil, it is characterised in that：It is to be threadedly coupled between the connecting rod and the insulation sliding plate；

The connecting rod is connected with the support connecting frame component.

6. the current conversion station according to any one of claim 1-3 slides/be fixedly connected excessively stream with pipe mother and static contact is fixed Gold utensil, it is characterised in that：The both ends of axial direction of the insulation sliding sleeve along the connecting rod are provided with the screwed hole.

7. the current conversion station according to any one of claim 1-3 slides/be fixedly connected excessively stream with pipe mother and static contact is fixed Gold utensil, it is characterised in that：The insulation sliding plate is nylon sliding plate；

The insulation sliding sleeve is nylon sliding sleeve.

8. the current conversion station according to any one of claim 1-3 slides/be fixedly connected excessively stream with pipe mother and static contact is fixed Gold utensil, it is characterised in that：The stationary contact head frame includes mainboard and upper gusset on the mainboard, lower web plate, equipment Connecting plate and static contact fixed plate.

9. the current conversion station according to any one of claim 1-3 slides/be fixedly connected excessively stream with pipe mother and static contact is fixed Gold utensil, it is characterised in that：The anticorona ring includes 2 symmetrically arranged ring bodies；

2 ring bodies are connected by connecting cross-arm；

The anticorona ring is connected on the stationary contact head frame by support, and the support and the static contact are by sharing Bolt is fixed on the stationary contact head frame.