Direct-current engineering converter station valve tower connecting fitting

Abstract

The invention discloses a direct-current engineering converter station valve tower connecting fitting, which comprises a first eccentric mounting plate, a second eccentric mounting plate, a third eccentric mounting plate and a fourth eccentric mounting plate, the first eccentric mounting plate is fixedly connected with one side of a connecting block on a valve tower busbar, and a first eccentric hole is formed in one side surface of the first eccentric mounting plate close to the top end of the first eccentric mounting plate; one end of the first metal supporting rod is fixedly inserted into the first eccentric hole, and the other end of the first metal supporting rod is hinged to the tubular bus holding clamp; the second eccentric mounting plate is fixedly connected with the other side of the connecting block, and a second eccentric hole is formed in the position, close to the top end, of one side face of the second eccentric mounting plate; and one end of the second metal supporting rod is inserted and fixed in the second eccentric hole, and the other end of the second metal supporting rod is fixedly connected with the outgoing wire clamp. According to the fitting, the mounting heights of the tubular bus and the outgoing wire on the fitting can be respectively improved, so that the tubular bus and the outgoing wire are prevented from sinking due to gravity to generate interference contact collision with parts such as a shielding ring around the fitting, and the problem of discharge or damage is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power fittings, in particular to a DC engineering converter station valve tower connecting fitting. BACKGROUND

[0002] With the increasing demand for domestic electricity, people have built more high-voltage and extra-high voltage converter stations, and the converter valve tower is an important component of the valve hall of the converter station, and the valve tower fitting is a device for electrical connection and fixation of the valve tower, which plays a role in transferring mechanical and electrical loads and protection.

[0003] One side of the existing connecting fitting is connected with the pipe bus, and since the pipe bus is long (generally 6-15 meters) and heavy, it causes the pipe bus to bend and deform downward, and if the deformation is large, it may interfere with the surrounding shielding ring and other components, causing discharge or damage, and the outgoing line lead from the other side of the fitting will also sink due to gravity, which may also cause contact with the shielding ring. In addition, due to processing errors of the valve tower and the fitting, the fittings on two adjacent valve towers are not at the same horizontal position, i.e. the pipe buses on the two valve towers are staggered up and down, which may cause the pipe buses to be unable to be normally installed, and the pipe buses between the two valve towers may also be tilted due to earthquakes and other reasons, which may cause stress between the tilted pipe buses and the fittings, causing the pipe buses and the fittings to be prone to fatigue cracking and damage. In addition, the pipe bus clamp and the fitting are fixedly connected, and due to installation errors of the fitting on the valve tower and processing errors of the length of the pipe bus, the pipe bus may not be installed in place when installing the pipe bus between two adjacent valve towers, i.e. the distance between the pipe bus clamps on two adjacent valve towers is fixed, and when the length of the pipe bus is slightly longer or shorter due to processing errors, the pipe buses at both ends cannot be normally assembled to the two pipe bus clamps. SUMMARY

[0004] Therefore, the present application provides a DC engineering converter station valve tower connecting fitting to at least solve one of the above problems.

[0005] In order to achieve the above purpose, the present application adopts the following technical solutions: A DC engineering converter station valve tower connecting fitting, comprising: A first eccentric mounting plate is fixedly connected to one side of the connecting block on the valve tower bus, and a first eccentric hole is formed on one side surface of the first eccentric mounting plate near the top end position thereof; A first metal support rod is inserted and fixed in the first eccentric hole, and the other end of the first metal support rod is hingedly connected with the pipe bus clamp; The second eccentric mounting plate is fixedly connected to the other side of the connecting block, and a second eccentric hole is provided on one side of the second eccentric mounting plate near its top position. The second metal support rod has one end inserted into the second eccentric hole and the other end fixedly connected to the outgoing wire clamp.

[0006] The beneficial effects of the above technical solution are as follows: The invention installs the first and second metal support rods on the connecting block near the top, i.e., eccentrically upwards, thereby increasing the installation height of the jack clamp and the lead wire clamp. This increases the installation height of the jack and the lead wire on the fittings, preventing interference or damage caused by gravity causing the jack and lead wire to sink and collide with components such as the shielding ring around the fittings. Furthermore, the other end of the first metal support rod is hinged to the jack clamp, giving the jack clamp a certain degree of rotational freedom relative to the first metal support rod. This ensures that under earthquake conditions, the ends of the jack between valve towers will not experience stress relative to the fittings, allowing the jack ends to smoothly tilt and rotate to adapt to sudden positional changes caused by earthquakes, thus extending the service life of the jack and fittings.

[0007] Furthermore, a ball joint is clamped on the tube clamp, and the rotating part of the ball joint is connected to the other end of the first metal support rod.

[0008] The beneficial effects of the above technical solution are: integrating a ball joint into the pipe clamp allows the pipe clamp to rotate appropriately relative to the first metal support rod, avoiding the problem of premature damage caused by the pipe end and pipe clamp support being unable to adjust their position independently when the valve tower settles due to earthquakes, due to the fixed connection between the two.

[0009] Furthermore, the other end of the first metal support rod has a threaded section, which passes through a through hole on the rotating part, and a locking nut is screwed onto the threaded section at a position on each of the two opposite sides of the rotating part.

[0010] The beneficial effects of the above technical solution are: the present invention can loosen the locking nut and appropriately move the lateral position of the pipe nut clamp on the threaded section according to the situation where the length of the pipe nut is slightly longer or shorter due to processing errors, that is, appropriately adjust the distance between the pipe nut clamps on the two valve towers, so as to realize the normal installation of the pipe nut with errors between two adjacent valve towers.

[0011] Furthermore, the pipe clamp includes: a first clamping block and a second clamping block connected by connecting bolts, wherein a first mounting groove is provided on the clamping surface of the first clamping block, a second mounting groove is provided on the clamping surface of the second clamping block, and the ball joint is clamped between the first mounting groove and the second mounting groove.

[0012] The beneficial effect of the above technical solution is that it facilitates the assembly and disassembly of ball joints.

[0013] Furthermore, a gap is reserved between the ball joint and the first mounting groove and the second mounting groove to allow the tube clamp to move laterally.

[0014] The beneficial effect of the above technical solution is that when the nut expands and contracts due to heat, the clamp of the nut can have a certain amount of lateral displacement adjustment relative to the ball joint, avoiding the problem that the nut cannot be finely adjusted laterally due to thermal expansion and contraction, which would lead to premature damage to the nut.

[0015] Furthermore, both the first metal support rod and the second metal support rod are made of hot-dip galvanized steel, and both have reinforcing ribs on their rod walls.

[0016] The beneficial effects of the above technical solution are: the reinforcing ribs can improve the structural strength of the first metal support rod and the second metal support rod, and both are hot-dip galvanized, which gives them sufficient mechanical strength and good corrosion resistance, adapts to the use requirements of complex operating environments and meets the requirement of bearing large stress when the valve tower hardware is used as a fixed end, and the structure is simple.

[0017] Furthermore, both the first terminal block of the outgoing conductor clamp and the second terminal block of the valve tower busbar are made of aluminum.

[0018] The beneficial effect of the above technical solution is to improve the lightweighting capability of hardware. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0020] Figure 1 This is a front view structural schematic diagram of a valve tower connection fitting for a DC converter station provided by the present invention.

[0021] Figure 2 for Figure 1 A top-view structural diagram.

[0022] Figure 3 forFigure 1 A schematic diagram of the three-dimensional structure.

[0023] Figure 4 for Figure 3 A magnified schematic diagram of the structure of part A in the middle.

[0024] Figure 5 for Figure 1 A schematic diagram of the three-dimensional structure from another perspective.

[0025] Figure 6 This is a schematic diagram of the tube clamp structure.

[0026] Figure 7 This is a schematic diagram of the structure of the first metal support rod.

[0027] Figure 8 This is a schematic diagram from another perspective of the first metal support rod.

[0028] Figure 9 This is a schematic diagram of the second metal support rod.

[0029] Figure 10 This is a schematic diagram of the fittings connecting the two adjacent valve towers provided by the present invention.

[0030] Figure 11 This is a schematic diagram of the bending deformation of the nut between two adjacent valve towers. Detailed Implementation

[0031] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0032] See Figures 1-9 This invention discloses a valve tower connection fitting for a DC converter station, comprising: The first eccentric mounting plate 1 is fixedly connected to one side of the connecting block 1001 on the valve tower busbar 100. A first eccentric hole 101 is provided on one side of the first eccentric mounting plate 1 near its top. The first metal support rod 2, one end of which is inserted into the first eccentric hole 101, and the other end of which is hinged to the tube clamp 200. The second eccentric mounting plate 3 is fixedly connected to the other side of the connecting block 1001. A second eccentric hole 301 is provided on one side of the second eccentric mounting plate 3 near its top. The second metal support rod 4 has one end inserted into the second eccentric hole 301, and the other end is fixedly connected to the outgoing wire clamp 300.

[0033] Among them, the valve tower busbar 100, the pipe clamp 200, and the outgoing conductor clamp 300 are electrically connected by a current-carrying conductor 700.

[0034] Of course, after the first metal support rod 2 is inserted into the first eccentric hole 101, it can also be securely installed on the first eccentric mounting plate 1 by welding. After the second metal support rod 4 is inserted into the second eccentric hole 301, it can also be securely installed on the second eccentric mounting plate 3 by welding.

[0035] A ball joint 5 is clamped on the tube clamp 200, and the rotating part 51 of the ball joint 5 is connected to the other end of the first metal support rod 2.

[0036] The other end of the first metal support rod 2 has a threaded section 6, which passes through a through hole on the rotating part 51, and a locking nut 7 is screwed onto the threaded section 6 at two opposite positions on the rotating part 51.

[0037] The pipe clamp 200 includes: a first clamping block 2002 and a second clamping block 2003 connected by connecting bolts 2001. The clamping surface of the first clamping block 2002 is provided with a first mounting groove 20021, and the clamping surface of the second clamping block 2003 is provided with a second mounting groove 20031. The ball joint 5 is clamped between the first mounting groove 20021 and the second mounting groove 20031.

[0038] A gap is reserved between the ball joint 5 and the first mounting groove 20021 and the second mounting groove 20031 to allow the tube clamp 200 to move laterally.

[0039] Both the first metal support rod 2 and the second metal support rod 4 are made of hot-dip galvanized steel, and both have reinforcing ribs 8 on their rod walls.

[0040] Both the first terminal block 3001 of the outgoing wire clamp 300 and the second terminal block 1002 of the valve tower busbar 100 are made of aluminum.

[0041] In the above embodiments, see Figure 10 and Figure 11 Two adjacent valve towers 600 are connected by a nut 400 via fittings. The nut 400 is surrounded by a shielding ring 500. The nut 400 is installed eccentrically at the top of the connecting block 1001 (see...). Figure 11 At point A in the middle, when the nut 400 bends or deforms, its end will not contact or collide with the shielding ring 500. When the nut 400 is installed at the center of the connecting block 1001 (see point A in the middle), its end will not contact or collide with the shielding ring 500. Figure 11 When the 400 tube (at point B) is bent and deformed, there is a risk that its end may come into contact with or collide with the shielding ring 500.

[0042] Advantages of this invention: 1. The pipe nut clamp and the hardware of the present invention are connected by a hinge, so that the pipe nut clamp can have a rotational freedom of ±15° relative to the hardware. This enables the pipe nut to adapt to the seismic environment and solves the problem of the pipe nut clamps on the two valve towers being misaligned due to the machining errors of the valve tower and the hardware, which prevents the pipe nut from being installed normally. 2. The connection between the pipe nut clamp and the hardware is made by a threaded section and a lock nut, which enables the lateral position adjustment of the pipe nut clamp, thus accommodating the normal installation of pipe nuts with machining errors; 3. The first and second metal support rods of the fittings are made of steel and reinforced with ribs to effectively increase strength and meet the requirements of bearing large stresses when the valve tower fittings are used as fixed ends. The structure is simple. 4. The terminal block of the hardware is made of aluminum, which reduces the weight of the hardware and improves its current carrying capacity; 5. The fittings have a simple structure and are easy to process, reducing production costs.

[0043] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0044] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A valve tower connection fitting for a DC converter station, characterized in that, include: The first eccentric mounting plate (1) is fixedly connected to one side of the connecting block (1001) on the valve tower busbar (100). A first eccentric hole (101) is provided on one side of the first eccentric mounting plate (1) near its top. The first metal support rod (2) has one end inserted into the first eccentric hole (101) and the other end is hinged to the tube clamp (200). The second eccentric mounting plate (3) is fixedly connected to the other side of the connecting block (1001), and a second eccentric hole (301) is provided on one side of the second eccentric mounting plate (3) near its top. The second metal support rod (4) has one end inserted into the second eccentric hole (301) and the other end fixedly connected to the outgoing wire clamp (300).

2. The valve tower connection fitting for a DC converter station according to claim 1, characterized in that, The tube clamp (200) is fitted with a ball joint (5), and the rotating part (51) of the ball joint (5) is connected to the other end of the first metal support rod (2).

3. The valve tower connection fitting for a DC converter station according to claim 2, characterized in that, The other end of the first metal support rod (2) has a threaded section (6), which passes through the through hole on the rotating part (51), and a locking nut (7) is screwed on the threaded section (6) at two opposite positions on the rotating part (51).

4. A valve tower connection fitting for a DC converter station according to any one of claims 2-3, characterized in that, The pipe clamp (200) includes a first clamping block (2002) and a second clamping block (2003) connected by connecting bolts (2001). The clamping surface of the first clamping block (2002) is provided with a first mounting groove (20021), and the clamping surface of the second clamping block (2003) is provided with a second mounting groove (20031). The ball joint (5) is clamped between the first mounting groove (20021) and the second mounting groove (20031).

5. A valve tower connection fitting for a DC converter station according to claim 4, characterized in that, The ball joint (5) has a gap between itself and the first mounting groove (20021) and the second mounting groove (20031) to allow the tube clamp (200) to move laterally.

6. A valve tower connection fitting for a DC converter station according to any one of claims 1-3 and 5, characterized in that, The first metal support rod (2) and the second metal support rod (4) are both made of hot-dip galvanized steel, and both of them have reinforcing ribs (8) on their rod walls.

7. A valve tower connection fitting for a DC converter station according to any one of claims 1-3 and 5, characterized in that, The first terminal block (3001) of the outgoing conductor clamp (300) and the second terminal block (1002) of the valve tower busbar (100) are both made of aluminum.

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