阅读说明：本技术 一种紧凑型换流阀电抗器的检修装置及其检修方法 (Overhauling device and overhauling method for compact converter valve reactor ) 是由 王康 顾杰 杨启 张子敬 刘磊 钱闯 张翔 方太勋 于 2020-04-15 设计创作，主要内容包括：本发明公开了一种紧凑型换流阀电抗器的检修装置及其检修方法,包括支撑工装,所述支撑工装适于支撑待检修电抗器；曲形梁,所述曲形梁固定于所述待检修电抗器上方的阀层框架上；吊绳,所述吊绳的一端连接所述曲形梁,另一端连接所述支撑工装；所述支撑工装撑起所述待检修电抗器并由所述吊绳移出阀塔,所述曲形梁呈近似S型弯曲,吊绳沿所述曲形梁的纵向往复运动,以使所述待检修电抗器移动过程中避开阀塔中的电器元件。本发明将现有的直线形H型材改进为曲形梁,通过合理设计曲形梁的弯曲方式以及电抗器取出方式,可以实现在狭窄空间下取出电抗器,减少劳动力,提高电抗器检修效率。(The invention discloses a maintenance device and a maintenance method of a compact converter valve reactor, wherein the maintenance device comprises a supporting tool, a supporting tool and a maintenance tool, wherein the supporting tool is suitable for supporting the reactor to be maintained; the curved beam is fixed on the valve layer frame above the to-be-overhauled reactor; one end of the lifting rope is connected with the curved beam, and the other end of the lifting rope is connected with the supporting tool; the supporting tool supports the to-be-overhauled reactor and moves out of the valve tower through the lifting rope, the curved beam is bent in an approximate S shape, and the lifting rope reciprocates along the longitudinal direction of the curved beam so as to enable the to-be-overhauled reactor to avoid electrical elements in the valve tower in the moving process. According to the invention, the existing linear H-shaped section is improved into the curved beam, and the reactor can be taken out in a narrow space by reasonably designing the bending mode of the curved beam and the reactor taking-out mode, so that the labor force is reduced, and the reactor overhauling efficiency is improved.)

1. The utility model provides an overhaul device of compact converter valve reactor which characterized in that includes:

the support tool (1), the support tool (1) is suitable for supporting the reactor (4) to be overhauled;

the curved beam (2), the curved beam (2) is fixed on the valve layer frame above the to-be-overhauled reactor (4);

one end of the lifting rope is connected with the curved beam (2), and the other end of the lifting rope is connected with the supporting tool (1);

the supporting tool (1) supports the to-be-overhauled reactor (4) and moves the to-be-overhauled reactor out of the valve tower through the lifting rope, the curved beam (2) is bent in an approximate S shape, and the lifting rope moves in a reciprocating mode along the longitudinal direction of the curved beam (2) so that the to-be-overhauled reactor (4) avoids electrical elements in the valve tower in the moving process.

2. The overhaul device for a compact converter valve reactor according to claim 1, characterized in that: the curved beam (2) is fixed on two longitudinal valve layer frames (5), the longitudinal valve layer frames (5) are divided into end sections (502) located right above the electric reactors (3) on two sides and a middle section (501) located between the two end sections (502), one end of the curved beam (2) is connected with the end sections (502), and the other end of the curved beam (2) is connected with the middle section (501).

3. The overhaul device for a compact converter valve reactor according to claim 2, characterized in that: the shortest distance from each point on the longitudinal central shaft of the curved beam (2) to the insulator column body (19) is 77-85 mm.

4. The overhaul device for a compact converter valve reactor according to claim 2, characterized in that: the top of bent roof beam (2) is equipped with two fixed hooks, two the fixed hook is fixed respectively on two vertical valve layer frames (5), the bottom sliding connection of bent roof beam (2) has calabash (9), the lifting rope with calabash (9) are connected.

5. The overhaul device for a compact converter valve reactor according to claim 4, wherein: two the fixed hook is C type hook (7) and Z type hook (8) respectively, C type hook (7) are fixed in the middle part of bent roof beam (2), Z type hook (8) are fixed in the one end of bent roof beam (2), the other end of bent roof beam (2) is equipped with limit structure (10), limit structure (10) are suitable for the restriction calabash (9) to the tip of bent roof beam (2) slides.

6. The overhaul device for a compact converter valve reactor according to claim 5, wherein: the limiting structure (10) is a connecting bolt fixedly arranged on the curved beam (2).

7. The overhaul device for a compact converter valve reactor according to claim 4, wherein: the curved beam (2) is an H-shaped beam, and the hoist (9) is a hand hoist.

8. The overhauling method of the compact converter valve reactor is characterized by comprising the following steps of: comprising the steps of replacing the topmost reactor (3) and replacing the non-topmost reactor (3), using the compact converter valve reactor service arrangement of any of claims 1-7, the replacing of the topmost reactor (3) comprising the steps of:

s1: a supporting tool (1) is installed at the bottom of the topmost reactor (3), the supporting tool (1) is matched with a round hole of a lower installation plate of the topmost reactor (3), one end of a lifting rope is connected with the supporting tool (1), and the other end of the lifting rope is connected with a travelling crane;

s2: and starting the travelling crane, and vertically lifting the topmost reactor (3) upwards until the reactor reaches the outside of the valve tower structure.

9. The overhaul method of a compact converter valve reactor according to claim 8, characterized in that: the replacement of the non-topmost reactor (3) comprises the following steps:

s3: a supporting tool (1) is installed at the bottom of the non-topmost reactor (3), the supporting tool (1) is matched with a round hole of a lower installation plate of the non-topmost reactor (3), a curved beam (2) is installed on a valve layer frame above the non-topmost reactor (3), and one end of the curved beam (2) extends out of a valve tower; one end of the lifting rope is connected with the supporting tool (1), and the other end of the lifting rope is connected to the curved beam (2) in a sliding manner;

s4: and (5) pulling the lifting rope to lift the non-topmost reactor (3) and horizontally moving along the longitudinal direction of the curved beam (2) until the outer part of the valve tower structure is reached.

10. The overhaul method of a compact converter valve reactor according to claim 9, characterized in that: in S4, the non-topmost reactor (3) is moved out of the area where the end section (502) is located by the following steps:

the method comprises the following steps: lifting; vertically lifting the non-topmost reactor (3) by 300-400 mm upwards from the initial position;

step two: removing a first edge of the non-topmost reactor (3); when the non-topmost reactor (3) is about to reach the position below the transverse valve layer frame (6), the non-topmost reactor (3) is rotated by 45-60 degrees anticlockwise, so that a water receiving pipe of the non-topmost reactor (3) inclines outwards, and an edge close to the inner side firstly crosses the transverse valve layer frame (6);

step three: and gradually rotating the non-topmost reactor (3) clockwise, and simultaneously moving the non-topmost reactor (3) towards the middle section (501) to enable other edges of the non-topmost reactor (3) to sequentially cross the transverse valve layer frame (6).

Technical Field

The invention relates to the technical field of maintenance of a converter valve reactor, in particular to a maintenance device and a maintenance method of a compact converter valve reactor.

Background

At present, China is in a stage of rapidly promoting construction of extra-high voltage direct-current transmission projects, a direct-current converter valve is core equipment of the direct-current transmission projects, and besides a conventional suspension type valve tower, a supporting type compact converter valve has large market demands under the conditions of valve hall space, old station transformation and the like.

The anode reactor, as an important component of the valve structure, mainly plays the following roles: 1) bear voltage under the impact of steep waves and lightning waves, so that the thyristor is prevented from being damaged by overvoltage; 2) the current rising rate of the thyristor is limited, the reactor has a large unsaturated inductance value under a small current within the first few microseconds of the thyristor, the current rising rate of the thyristor is limited, and the reactor enters a saturated state after the thyristor is safely turned on, so that the inductance value is small; 3) sufficient damping is provided to prevent the oscillation surge current generated when the current of the thyristor passes zero, so that the thyristor is protected and the oscillation surge current is prevented from passing zero.

The compact converter valve is named after compact structure, so the maintenance space is smaller than that of the conventional extra-high voltage direct current converter valve, the electric reactor is positioned at the position close to the inner part of the valve layer, four valve interlayer insulators, an interlayer water pipe and an interlayer optical cable groove are distributed around the electric reactor, and the replacement space is extremely narrow. The mass of the reactor component is large, and the reactor component cannot be replaced by manpower alone, so that a device and a method for efficiently and quickly replacing the reactor in a narrow space need to be designed.

Disclosure of Invention

In order to solve the technical problem that a compact converter valve in the prior art cannot be taken out and replaced through an existing overhauling device due to narrow space, the invention provides an overhauling device of a compact converter valve reactor and an overhauling method thereof to solve the problems.

The invention provides a maintenance device of a compact converter valve reactor, which comprises a supporting tool, wherein the supporting tool is suitable for supporting the reactor to be maintained; the curved beam is fixed on the valve layer frame above the to-be-overhauled reactor; one end of the lifting rope is connected with the curved beam, and the other end of the lifting rope is connected with the supporting tool; the supporting tool supports the to-be-overhauled reactor and moves out of the valve tower through the lifting rope, the curved beam is bent in an approximate S shape, and the lifting rope reciprocates along the longitudinal direction of the curved beam so as to enable the to-be-overhauled reactor to avoid electrical elements in the valve tower in the moving process.

Further, the curved beam is fixed on two longitudinal valve layer frames, the longitudinal valve layer frames are divided into end sections located right above the electric reactors on two sides and a middle section located between the two end sections, one end of the curved beam is connected with the end sections, and the other end of the curved beam is connected with the middle section.

Preferably, the shortest distance from each point on the longitudinal central axis of the curved beam to the insulator column is 77 mm-85 mm.

Further, the top of bent roof beam is equipped with two fixed hooks, two the fixed hook is fixed respectively on two vertical valve layer frames, the bottom sliding connection of bent roof beam has the calabash, the lifting rope with the calabash is connected.

Preferably, two the fixed hook is C type hook and Z type hook respectively, C type hook is fixed in the middle part of bent roof beam, Z type hook is fixed in the one end of bent roof beam, the other end of bent roof beam is equipped with limit structure, limit structure is suitable for the restriction the calabash to the tip of bent roof beam slides.

Preferably, the limiting structure is a connecting bolt fixedly arranged on the curved beam.

Preferably, the curved beam is an H-shaped beam, and the hoist is a hand hoist.

The invention also provides a maintenance method of the compact converter valve reactor, which comprises the steps of replacing the topmost reactor and replacing the non-topmost reactor, the method uses the maintenance device of the compact converter valve reactor, and the replacement of the topmost reactor comprises the following steps:

s1: and a supporting tool is arranged at the bottom of the topmost reactor, so that the supporting tool is matched with the round hole of the lower mounting plate of the topmost reactor, one end of the lifting rope is connected with the supporting tool, and the other end of the lifting rope is connected with the travelling crane. S2: and starting the travelling crane, and vertically hoisting the topmost reactor upwards until the topmost reactor reaches the outside of the valve tower structure.

Further, the replacement of the non-topmost reactor comprises the following steps:

s3: mounting a supporting tool at the bottom of the non-topmost reactor, enabling the supporting tool to be matched with a round hole of a lower mounting plate of the non-topmost reactor, mounting a curved beam on a valve layer frame above the non-topmost reactor, and enabling one end of the curved beam to extend out of a valve tower; one end of the lifting rope is connected with the supporting tool, and the other end of the lifting rope is connected to the curved beam in a sliding mode. S4: and pulling the lifting rope to lift the non-topmost reactor, and horizontally moving the non-topmost reactor along the longitudinal direction of the curved beam until the non-topmost reactor reaches the outside of the valve tower structure.

Further, in S4, the non-topmost reactor is moved out of the area where the end segment is located by the following steps:

the method comprises the following steps: lifting; and vertically lifting the non-topmost reactor by 300-400 mm upwards from the initial position.

Step two: removing a first edge of a non-topmost reactor; when the non-topmost reactor is about to reach the lower part of the transverse valve layer frame, the non-topmost reactor is rotated by 45-60 degrees anticlockwise, so that a water receiving pipe of the non-topmost reactor is inclined outwards, and an edge close to the inner side firstly crosses the transverse valve layer frame.

Step three: and gradually rotating the non-topmost reactor clockwise, and simultaneously moving the non-topmost reactor towards the middle section to enable other edges of the non-topmost reactor to sequentially cross the transverse valve layer frame.

The invention has the beneficial effects that:

according to the invention, the existing linear H-shaped section is improved into the curved beam, and the reactor can be smoothly taken out in a narrow space by reasonably designing the bending mode of the curved beam and the reactor taking-out mode, so that the labor force is reduced, and the reactor overhauling efficiency is improved. In addition, the transfer distance can be shortened, the device cost is reduced, and the maintenance efficiency is further improved.

Drawings

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is an assembly schematic diagram of a compact converter valve reactor maintenance device in a valve tower structure (the lifting rope and the supporting tool are not shown);

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a sectional view taken along line A-A of FIG. 2;

FIG. 4 is a right side view of FIG. 1;

FIG. 5 is an enlarged view taken at a point a of FIG. 1;

FIG. 6 is a perspective view of the support assembly of the present invention;

FIG. 7 is a front view of the support assembly of FIG. 6;

FIG. 8 is a right side view of FIG. 7;

fig. 9 is a perspective view of a compact converter valve reactor maintenance device according to the present invention (the lifting rope and the support tool are not shown);

FIG. 10 is a front view of FIG. 9;

FIG. 11 is a state diagram of the reactor to be overhauled in step one;

FIG. 12 is a state diagram of the reactor to be overhauled in the second step;

fig. 13 is a state diagram of the reactor to be overhauled when the water receiving pipe 18 passes over two insulator columns in the third step;

FIG. 14 is a state diagram of the reactor to be overhauled when an edge III crosses two insulator columns in the third step;

FIG. 15 is a state diagram when the reactor to be overhauled enters an intermediate section;

figure 16 is a state diagram of the service reactor as it moves out of the valve tower structure.

In the figure, 1, a supporting tool, 101, a supporting arm, 102, a lifting ring, 103, a circular plate, 2, a curved beam, 3, a reactor, 4, a reactor to be overhauled, 5, a longitudinal valve layer frame, 501, a middle section, 502, an end section, 6, a transverse valve layer frame, 7, a C-shaped hook, 8, a Z-shaped hook, 9, a hoist, 10, a limiting structure, 11, a base plate, 12, an L-shaped plate, 13, a straight plate, 14, a first edge, 15, a second edge, 16, a third edge, 17, a fourth edge, 18, a water receiving pipe, 19 and an insulator column body.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

A maintenance device of a compact converter valve reactor comprises a supporting tool 1, a curved beam 2 and a lifting rope, wherein the supporting tool 1 is suitable for supporting a reactor 4 to be maintained; the curved beam 2 is fixed on a valve layer frame above the to-be-overhauled reactor 4; one end of the lifting rope is connected with the curved beam 2, and the other end of the lifting rope is connected with the supporting tool 1; the supporting tool 1 supports the to-be-overhauled reactor 4 and moves out of the valve tower through the lifting rope, the curved beam 2 is bent approximately in an S shape, and the lifting rope reciprocates along the longitudinal direction of the curved beam 2 so that the to-be-overhauled reactor 4 avoids electrical elements in the valve tower in the moving process.

Fig. 1 shows a valve tower structure with two layers of valve layer frames, the upper layer of the valve tower structure is provided with two longitudinal valve layer frames 5 and four transverse valve layer frames 6, two layers of reactors 3 are respectively arranged at two sides of the valve tower, the two reactors 3 at the upper layer can be directly hoisted out from the upper part, the two reactors 3 at the lower part need to be moved out from the side direction due to limited space, it can be seen from fig. 1 that the reactors 3 are arranged close to the rear side (the arrangement mainly occurs in the valve tower structure with narrower space), two sides of the reactors 3 are insulator columns 19, if a single U-shaped material is directly used to take out the reactor 4 to be overhauled along the longitudinal direction, the reactor 4 to be overhauled can generate interference with the insulator columns 19, therefore, the overhauling device of the invention needs to be used, the moving direction of the reactor 4 to be overhauled is changed by utilizing the curved, thereby avoiding the interference components skillfully and taking out the reactor 4 to be overhauled quickly and effectively.

As shown in fig. 6-8, the supporting tool 1 generally includes a circular plate 103, a plurality of supporting arms 101 circumferentially distributed on an outer edge of the circular plate 103, and a hanging ring 102 located at a center of the circular plate 103, wherein the hanging ring 102 and the supporting arms 101 are disposed at two ends of the circular plate 103, specifically, a threaded hole of M12 is formed in the center of the circular plate 103, and the hanging ring 102 is selected from an M12 hanging ring 102 screw and is in threaded connection with the threaded hole of M12. The circular plate 103 is suitable for being embedded into a circular hole of the lower mounting plate of the reactor 4 to be overhauled, the supporting arm 101 is used for blocking the outside of the lower mounting plate of the reactor 4 to be overhauled, the supporting tool 1 is supported at the bottom of the reactor 4 to be overhauled, the hanging ring 102 is inserted into the circular hole of the reactor 4 to be overhauled, one end of the hanging rope is connected with the hanging ring 102, and the other end of the hanging rope penetrates through the circular hole to.

In a preferred embodiment of the present invention, four supporting arms 101 are provided, and four supporting arms 101 are uniformly welded to a circular plate 103 at 90 °.

In a further preferred embodiment of the invention, the part of the supporting arm 101 exposed out of the circular plate 103 is rounded to avoid scratching the lower mounting plate of the reactor 4 to be repaired.

The curved beam 2 is preferably an H-shaped beam, i.e. the cross section is H-shaped and extends in a curve, on one hand, the installation of other connecting structures is convenient, and on the other hand, the weight is light and the structural strength is high. As shown in fig. 2 to 4, the curved beam 2 is fixed to two longitudinal valve layer frames 5, the longitudinal valve layer frames 5 are divided into end sections 502 located right above the reactors 3 on both sides and a middle section 501 located between the two end sections 502, one end of the curved beam 2 is connected to the end section 502, and the other end of the curved beam 2 is connected to the middle section 501. The bending criteria for the curved beam 2 are: the shortest distance from each point on the longitudinal central axis of the curved beam 2 to the insulator column 19 is greater than the distance from the center of the reactor 4 to be overhauled to the insulator column 19, and preferably, the shortest distance from each point on the longitudinal central axis of the curved beam 2 to the insulator column 19 is 77 mm-85 mm. As shown in fig. 3, one end of the curved beam 2 is fixed on the longitudinal valve layer frame 5 at the rear side, the other end extends out from the front side of the valve tower structure, the curved beam 2 positioned inside the valve tower is bent in an S shape, so that the reactor 3 keeps the maximum distance from the insulator column 19 during the moving process, and the curved beam 2 positioned outside the valve tower extends in a straight line, thereby shortening the length of the curved beam 2 to the maximum extent. The curved beam 2 and the transverse valve layer frame 6 have a projected intersection point which is approximately located at the midpoint of the transverse valve layer frame 6, and the curved beam 2 forms an approximately quarter circular arc on the left and right sides of the transverse valve layer frame 6 centering on the respective insulator column 19.

The invention provides a maintenance method of a compact converter valve reactor 3, which comprises a step of replacing the topmost reactor 3 and a step of replacing a non-topmost reactor 3, wherein the method uses the maintenance device of the compact converter valve reactor 3, the topmost reactor 3 can be directly drawn out from the top due to the open type valve tower structure, and before the maintenance device is installed, valve tower cooling water needs to be discharged, and electrical elements inside the valve tower, such as a shielding case assembly, a connecting wire, a water pipe assembly connected with the reactor 3 and the like need to be removed. Replacing the topmost reactor 3 comprises the following steps:

s1: the bottom of the topmost reactor 3 is provided with the supporting tool 1, so that the supporting tool 1 is matched with the round hole of the lower mounting plate of the topmost reactor 3, one end of the lifting rope is connected with the supporting tool 1, and the other end of the lifting rope is connected with a travelling crane. S2: and starting the travelling crane to vertically lift the topmost reactor 3 upwards until the topmost reactor reaches the outside of the valve tower structure.

The supporting tool 1 for replacing the topmost reactor 3 is the supporting tool 1 in the maintenance device of the compact converter valve reactor 3, the supporting tool 1 is matched with the round hole of the lower mounting plate of the reactor 3, the circular plate 103 is embedded in the round hole of the lower mounting plate of the reactor 3, and the supporting arm 101 is tightly attached to the lower mounting plate of the reactor 3. And after the new reactor 3 is replaced, the new reactor 3 is hung to a specified position by a crane to install the reactor 3, the whole process is opposite to the dismantling process, and finally, other dismantled parts are installed to complete the replacement. It follows that the curved beam 2 need not be used when replacing the topmost reactor 3.

The non-topmost reactor 3 is positioned among the four insulator columns 19, the upper part of the non-topmost reactor is blocked by the valve frame and cannot be directly pulled out from the top, the non-topmost reactor 3 needs to be taken out together by combining the supporting tool 1 and the curved beam 2, and the replacement of the non-topmost reactor 3 comprises the following steps:

s3: a supporting tool 1 is arranged at the bottom of a non-topmost reactor 3, the supporting tool 1 is matched with a round hole of a lower mounting plate of the non-topmost reactor 3, a curved beam 2 is arranged on a valve frame above the non-topmost reactor 3, and one end of the curved beam 2 extends out of a valve tower; one end of the lifting rope is connected with the supporting tool 1, and the other end of the lifting rope is connected to the curved beam 2 in a sliding mode. S4: and (4) pulling the lifting rope to lift the non-topmost reactor 3, and horizontally moving along the longitudinal direction of the curved beam 2 until reaching the outside of the valve tower structure.

After replacement, the installation process of the reactor 3 is opposite to the removal process, and finally, other removed parts are installed to complete replacement.

The fixing of the curved beam 2 to the valve layer frame can adopt, but is not limited to, the following structure: the top of curved roof beam 2 is equipped with two fixed hooks, two the fixed hook adopts bolt or welded mode to fix respectively on two vertical valve layer frames 5, and one of them fixed hook is fixed at the interlude 501 of vertical valve layer frame 5, and another fixed hook is fixed at the tip section 502 of vertical valve layer frame 5, and the bottom sliding connection of curved roof beam 2 has calabash 9, the lifting rope is connected with calabash 9. Preferably, the hoist 9 is a hand hoist. Specifically, as shown in fig. 5 and 9, the two fixing hooks are a C-shaped hook 7 and a Z-shaped hook 8, respectively, the C-shaped hook 7 is fixed at the middle of the curved beam 2, the Z-shaped hook 8 is fixed at one end of the curved beam 2, the other end of the curved beam 2 is provided with a limiting structure 10, and the limiting structure 10 is suitable for limiting the hoist 9 to slide towards the end of the curved beam 2.

As shown in fig. 10, each of the C-shaped hook 7 and the Z-shaped hook 8 includes a base plate 11, an L-shaped plate 12 located at one end of the base plate 11, and a straight plate 13 located at the other end of the base plate 11, the L-shaped plate 12 and the base plate 11 form a U-shaped groove suitable for hooking the valve layer frame, the straight plate 13 of the C-shaped hook 7 and the L-shaped plate 12 are located on the same side of the base plate 11 and are mainly disposed at the end of the curved beam 2, the straight plate 13 of the C-shaped hook 7 is attached to the bottom of the curved beam 2, at this time, the straight plate 13 can also be used for abutting against one end of the curved beam 2 to prevent the hoist 9 from sliding out of the curved. The straight plate 13 and the L-shaped plate 12 of the Z-shaped hook 8 are positioned at two sides of the base plate 11, and as long as the Z-shaped hook is arranged at the middle part of the curved beam 2, the straight plate 13 of the Z-shaped hook 8 is attached to the top part of the curved beam 2.

Preferably, the limiting structure 10 is a connecting bolt fixedly arranged on the curved beam 2.

Taking the non-topmost reactor 3 on the right side out as an example, the taking out process of the reactor 3 is specifically described below:

firstly, mounting a support tool 1 at the bottom of a reactor 4 to be overhauled, enabling the support tool 1 to be matched with a round hole of a lower mounting plate of a non-topmost reactor 3, then mounting a curved beam 2 on a valve frame above the reactor to be overhauled, fixing one end of the curved beam 2 at the right end section 502 of a longitudinal valve frame 5 at the rear side, fixing the middle part of the curved beam 2 at the middle section 501 of the longitudinal valve frame 5 at the front side, extending the other end of the curved beam 2 out of a valve tower from the front side, and then mounting a manual hoist at the bottom of the curved beam 2; one end of the lifting rope is connected with the lifting ring 102 on the supporting tool 1, and the other end of the lifting rope is connected with the hand hoist. And then the lifting rope is pulled to lift the reactor 4 to be overhauled and horizontally move along the longitudinal direction of the curved beam 2 until the outer part of the valve tower structure is reached. The longitudinal direction of the curved beam 2 refers to the bending extension direction of the curved beam 2, and the reactor 4 to be overhauled gradually moves from the right rear part of the valve tower to the longitudinal middle part and the transverse front part of the valve tower under the guidance of the curved beam 2. The difficulty of movement is mainly in the area enclosed by the four insulator columns 19 on the right side, that is, the area where the end section 502 is located, and the area is compact in structure and easily collides with the insulator columns 19, so that the angle of the reactor 4 to be overhauled needs to be adjusted at any time. As shown in fig. 11, the reactor 4 to be overhauled has four edges which easily collide with the insulator column 19, and the four edges are the first edge 14, the second edge 15, the third edge 16 and the fourth edge 17, in an initial state, the first edge 14 and the second edge 15 are located at the rear side, the third edge 16 and the fourth edge 17 are located at the front side, the first edge 14 and the fourth edge 17 are close to the left side, the second edge 15 and the third edge 16 are close to the right side, and the reactor 4 to be overhauled specifically moves out of the area where the end section 502 is located through the following steps:

the method comprises the following steps: lifting; and vertically and upwards hoisting the reactor 4 to be overhauled by 300mm from the initial position. At this time, the water receiving pipe 18 of the reactor 4 to be overhauled faces forward (as shown in fig. 11).

Step two: removing a first edge of the reactor 4 to be overhauled, namely the first edge 14; due to the existence of the water receiving pipe 18, the transverse width of the reactor 4 to be overhauled is large, and the curved motion track of the curved beam 2 is likely to cause the reactor 4 to be overhauled to collide when passing through between the two right insulator columns 19, the chain block 9 is pulled to move the reactor 4 to be overhauled forwards, when the reactor 4 to be overhauled is about to reach the lower part of the transverse valve layer frame 6, the reactor 4 to be overhauled is rotated anticlockwise (from top to bottom) by 45 degrees, so that the water receiving pipe 18 of the reactor 4 to be overhauled inclines outwards (from front to back), at the moment, the edge I14 protrudes from between the two right insulator columns 19, and the edge close to the inner side (namely the edge I14) firstly passes over the transverse valve layer frame 6 (as shown in fig. 12).

Step three: the to-be-overhauled reactor 4 is gradually rotated clockwise, and meanwhile, the to-be-overhauled reactor 4 is moved towards the middle section 501, so that other edges of the to-be-overhauled reactor 4 sequentially cross the transverse valve layer frame 6. The specific operation is as follows: after the first edge 14 passes over the transverse valve layer frame 6, the chain block 9 is continuously pulled to move the reactor 4 to be overhauled forward along the curved beam 2, when the fourth edge 17 passes between the two insulator columns 19, the reactor 4 to be overhauled is rotated clockwise, a water receiving pipe 18 of the reactor 4 to be overhauled passes over the two insulator columns 19 (as shown in fig. 13), the distance between the water receiving pipe 18 and the first edge 14 and the insulator columns 19 on the two sides needs to be closely concerned in the rotating process, then the chain block 9 is continuously pulled, and the third edge 16 and the second edge 15 sequentially pass through the two insulator columns 19 (as shown in fig. 14 and 15). When the reactor 4 to be serviced enters the middle section 501, the reactor 4 to be serviced is rotated around the insulator column 19 on the front side under the guidance of the curved beam 2 until it is moved out of the valve tower structure (as shown in fig. 16).

The tool is simple in structure, can be commonly used in the replacement of various converter valve reactors 3, and is convenient to operate and high in efficiency. The method can efficiently and quickly replace the reactor 3 of any valve layer in a narrow space, complete the maintenance of compact valve equipment and reduce the working strength of operators.

In addition, compared with the straight beam in the prior art, the motion track of the curved beam 2 is shortened, so that the material consumption is less, and the manufacturing cost is reduced.

In this specification, the schematic representations of the terms are not necessarily referring to the same embodiment. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.