CN213629587U

CN213629587U - Novel extra-high voltage converter transformer fireproof wall equipment support connecting structure

Info

Publication number: CN213629587U
Application number: CN202022385936.4U
Authority: CN
Inventors: 雷晓标; 许斌; 陈传新; 饶冰; 高湛; 李志�; 张华�; 夏正东
Original assignee: China Power Engineering Consultant Group Central Southern China Electric Power Design Institute Corp
Current assignee: China Power Engineering Consultant Group Central Southern China Electric Power Design Institute Corp
Priority date: 2020-10-23
Filing date: 2020-10-23
Publication date: 2021-07-06
Anticipated expiration: 2030-10-23

Abstract

A novel connection structure of an equipment support on an extra-high voltage converter transformer firewall comprises angle steel, wherein the angle steel is fixed on the firewall; the end heads of the upper parts of the angle steels are provided with end plates, the end plates are connected with a support bottom plate of a steel support through bolts, bolt holes in the support bottom plate are oval bolt holes, and bolt holes in the end plates are round bolt holes; and a stiffening plate is welded between the support bottom plate and the steel support. The utility model discloses with the fixed mode comparison of traditional equipment support, satisfying under the fixed prerequisite of equipment support safety, can follow the installation width who prevents hot wall's thickness adjustment equipment support, avoid the scene to polish and prevent hot wall or rework processing equipment support, improve site operation efficiency, also reduced the steel quantity simultaneously. The utility model discloses good economy, environment and social have.

Description

Novel extra-high voltage converter transformer fireproof wall equipment support connecting structure

Technical Field

The utility model belongs to power transmission and transformation extra-high voltage converter station field, concretely relates to novel extra-high voltage converter transformer equipment support connection structure on fire wall.

Background

A plurality of converter transformers are generally arranged in the ultrahigh voltage converter station in an adjacent mode, and in order to meet the fireproof requirement, fire walls are arranged among the transformers. According to the process and arrangement requirements, the fireproof wall is provided with an insulator, a capacitor, a current transformer, a lightning arrester and other equipment supports.

Because the thickness of the firewall is small, and no enough space is provided with foundation bolts or anchor bars, the common current conversion transformer firewall equipment support is mostly made into a saddle-shaped support to be fixed on the firewall. The specific form is as follows: the top surface of the fire protection wall is a horizontal boundary, the upper part of the fire protection wall is provided with an equipment support with a horizontal steel plate for fixing the top surface, the lower part of the fire protection wall is provided with two vertical steel plates which are perpendicular to the horizontal steel plate and welded into an n-shaped shape with the horizontal steel plate, and the two vertical steel plates are respectively positioned at two sides of the fire protection wall and used for clamping the fire protection wall. The vertical steel plate is fixed on the firewall through a split bolt which penetrates through the firewall. The vertical and horizontal steel plates are about 18mm thick and are transported to a construction site for assembly after T-shaped welding in a processing plant. Holes for penetrating the split bolts are reserved in the fireproof wall, or holes are drilled in the fireproof wall after construction is completed according to actual conditions.

The thickness of the firewall formed by the two vertical steel plates is generally 300mm according to design drawings, the firewall is a cast-in-place reinforced concrete wall, due to construction errors, the thickness of the firewall is difficult to accurately control to be 300mm, and the wall thickness can be 290mm or 310mm or even thinner or thicker. But the steel plate processed by the steel structure has small direct error which is at most 2-3 mm. Therefore, the bracket can not be installed on the fireproof wall when being touched on site frequently, gaskets need to be added or the concrete fireproof wall needs to be thinned, and even the final thickness of each wall needs to be measured actually in some cases, and then the bracket is processed by returning to the factory according to the actual wall thickness. And adverse effects are brought to the construction progress and the steel structure processing on the site.

In addition, the two vertical steel plates are generally large in thickness, the length and the width are generally about half a meter, and the steel weight of the whole support is large and needs to be optimized.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model provides a novel special high voltage current conversion becomes equipment support connection structure on firewall.

In order to achieve the above object, the utility model adopts the following technical scheme:

the utility model provides a novel special high voltage current conversion becomes equipment support connection structure on firewall, its characterized in that: the angle iron is fixed on a fireproof wall;

the end heads of the upper parts of the angle steels are provided with end plates, the end plates are connected with a support bottom plate of a steel support through bolts, bolt holes in the support bottom plate are oval bolt holes, and bolt holes in the end plates are round bolt holes;

and a stiffening plate is welded between the support bottom plate and the steel support.

Furthermore, a hole which penetrates through the firewall is reserved when the firewall is poured.

Furthermore, the angle steel is connected with the hole of the firewall through a split bolt and fixed on the firewall.

Furthermore, the angle steel is equilateral or non-equilateral.

Furthermore, the end plates and the T-shaped angle steel are welded together.

The utility model has the advantages that:

1) the problem that the support is easy to install is solved. The utility model discloses separate into the parts at the scene equipment with the whole support of original processed "saddle shape", the interval of vertical component carries out appropriate adjustment according to the actual thickness that the scene prevented hot wall. By forming the oval bolt holes in the horizontal steel plate, the original welding connection between the vertical component and the horizontal steel plate is changed into the bolt connection with adjustable on site, so that the distance adjustment of the vertical component is realized.

2) The problem of heavy bracket weight is solved. The utility model discloses a change two steel sheets with vertical component into four angle steels, four vertical angle steels and horizontal steel sheet form the support of a "stool" shape, and the angle steel is fixed in on the firewall through split bolt again. The total weight of the four angle steels is less than half of the weight of the two vertical steel plates, so that the steel consumption can be effectively saved.

3) The construction is more convenient, and efficiency is higher. The utility model discloses the vertical component width of support is according to the adjustable big or accent of thickness that the hot wall was prevented in scene reality, need not add again and establish the backing plate or polish and prevent hot wall, more need not rework the reprocess support. The support is directly connected and fixed on the fireproof wall through the bolts on site, and the construction efficiency can be greatly improved.

The utility model discloses with the fixed mode comparison of traditional equipment support, satisfying under the fixed prerequisite of equipment support safety, can follow the installation width who prevents hot wall's thickness adjustment equipment support, avoid the scene to polish and prevent hot wall or rework processing equipment support, improve site operation efficiency, also reduced the steel quantity simultaneously. The utility model discloses good economy, environment and social have.

Drawings

Fig. 1 is a front view of the device holder on the firewall.

Figure 2 is the utility model discloses on the firewall equipment support top view.

Fig. 3 is a side view of the device holder on the firewall.

Wherein: 1-firewall, 2-angle steel, 3-split bolt, 4-end plate, 5-bracket bottom plate, 6-bolt, 7-stiffening plate, 8-steel bracket, 9-elliptical bolt hole and 10-circular bolt hole.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.

As shown in fig. 1 to 3, a novel connection structure for an equipment bracket on a fire wall of an extra-high voltage converter transformer comprises angle steel 2, wherein the angle steel 2 is fixed on a fire wall 1; the end head of the upper part of the angle steel 2 is provided with an end plate 4, the end plate 4 is connected with a bracket bottom plate 5 of a steel bracket 8 through a bolt 6, and a bolt hole on the bracket bottom plate 5 is an oval bolt hole 9; the bolt holes in the end plates 4 are round bolt holes 10, and stiffening plates 7 are welded between the support bottom plate 5 and the steel support 8.

The firewall 1 is used as the foundation of the whole support, is generally a reinforced concrete wall or a reinforced concrete frame with a reinforced concrete beam at the top, and bears the final load of the support. The majority of the fire-proof walls are in wet operation, the fire-proof walls are cast in situ by a construction unit, and holes which penetrate through the fire-proof walls are reserved during casting, so that the fire-proof walls can penetrate through the split bolts 3 conveniently.

The vertical angle steel 2 is a main stress component for connecting the firewall 1 and the upper steel support 8, and the size of the vertical angle steel can be determined according to calculation and can be equilateral angle steel or inequilateral angle steel. The lower part of the angle steel 2 is fixed with the firewall 1 through the split bolt 3, the upper part of the angle steel is connected with the steel bracket 8, and the load borne by the bracket is finally transmitted to the firewall 1. The upper end of the angle steel 2 is provided with a horizontal end plate 4, and the end plate 4 is provided with a round bolt hole which is convenient to be connected with a support bottom plate 5.

The two ends of the split bolt 3 are provided with screw threads and nuts, and the split bolt penetrates through a hole reserved in the firewall 1 and is used for fixing the vertical angle steel 2 on the firewall 1.

The end plate 4 is a horizontal plate at the end part of the angle steel 2 and is welded with the T shape of the angle steel, and a round bolt hole is formed in the upper part of the end plate, so that the end plate is conveniently connected with the support bottom plate 5 of the steel support 8. The size of the end plate 4 is determined by the angle steel 2 and the hole edge distance of the round bolt hole.

The support bottom plate 5 is a bottom plate of the upper steel support 8, the upper surface of the support bottom plate, the steel support 8 and the stiffening plate 7 are directly welded into a whole in a processing plant, the support bottom plate and the steel support are stacked on the end plate 4, oval bolt holes 9 are formed in the positions, corresponding to the round bolt holes of the end plate, of four corners, and the distance between the angle steel and the firewall can be adjusted conveniently.

The common bolt 6 penetrates through the end plate 4 and the support bottom plate 5, and the upper steel support 8 and the lower angle steel 2 are fixed together through the connecting plate. Oval bolt hole 9 is opened to upper portion support bottom plate 5, and round bolt hole is opened to the end plate 4 of lower part angle steel, and the scene of being convenient for is followed and is prevented hot wall thickness adjustment angle steel interval, can guarantee the width adjustment of upper portion support, can prevent again all to be the support risk of sliding that oval bolt hole brought.

The stiffening plates 7 and the steel bracket 8 are generally circular steel tube brackets as the conventional brackets, and the root connecting parts are provided with the radioactive stiffening plates around the circular steel tubes for one circle to strengthen the connection between the circular steel tubes and the bottom plate.

Details not described in this specification are within the skill of the art that are well known to those skilled in the art.

Claims

1. The utility model provides a novel special high voltage current conversion becomes equipment support connection structure on firewall, its characterized in that: the fireproof door comprises angle steel (2), wherein the angle steel (2) is fixed on a fireproof wall (1);

the end head of the upper part of the angle steel (2) is provided with an end plate (4), the end plate (4) is connected with a bracket bottom plate (5) of a steel bracket (8) through a bolt (6), a bolt hole on the bracket bottom plate (5) is an oval bolt hole (9), and a bolt hole on the end plate (4) is a round bolt hole (10);

and a stiffening plate (7) is welded between the support bottom plate (5) and the steel support (8).

2. The novel equipment support connecting structure on the extra-high voltage converter transformer firewall is characterized in that: and a hole which penetrates through the firewall is reserved when the firewall (1) is poured.

3. The novel equipment support connecting structure on the extra-high voltage converter transformer firewall is characterized in that: the angle steel (2) is connected with the hole of the firewall through the split bolt (3) and is fixed on the firewall (1).

4. The novel equipment support connecting structure on the extra-high voltage converter transformer firewall is characterized in that: the angle steel (2) is equilateral or non-equilateral.

5. The novel equipment support connecting structure on the extra-high voltage converter transformer firewall is characterized in that: the end plates (4) are welded with the T-shaped angle steel (2).