CN219431898U

CN219431898U - Telescopic limit support

Info

Publication number: CN219431898U
Application number: CN202320581307.XU
Authority: CN
Inventors: 邓灿; 刘孝清; 夏朝晖; 潘宏; 王龙锋; 罗皓涛; 张宇
Original assignee: Wisdri Engineering and Research Incorporation Ltd
Current assignee: Wisdri Engineering and Research Incorporation Ltd
Priority date: 2023-03-23
Filing date: 2023-03-23
Publication date: 2023-07-28
Anticipated expiration: 2033-03-23

Abstract

The application provides a telescopic limit support, which comprises an inner side guide seat and an outer side guide seat, wherein a plurality of first sliding friction plates are arranged on the outer peripheral wall of the inner side guide seat at intervals, and a plurality of second sliding friction plates which are in one-to-one correspondence with the first sliding friction plates are arranged on the inner peripheral wall of the outer side guide seat at intervals; the outer guide seat is sleeved on the inner guide seat in a vertically movable manner through the first sliding friction plate and the second sliding friction plate. The device has simple structure, low cost, small space, good durability and convenient manufacture, installation and replacement.

Description

Telescopic limit support

Technical Field

The application relates to the field of metallurgy, in particular to a telescopic limit support.

Background

In the blast furnace ironmaking project of the metallurgical industry, a blast furnace gas residual pressure power generation device (TRT) is an internationally recognized secondary energy recovery device which is valuable in steel enterprises, and utilizes the pressure energy and heat energy of blast furnace top gas to convert the expansion work of a turbine into mechanical energy, so that a generator is driven to generate power, and the TRT is a great energy-saving project of a blast furnace smelting process, and has remarkable economic benefit.

Because the TRT unit belongs to movable equipment, the rotor has high rotating speed and larger vibration, and meanwhile, the connecting pipe is basically in a downward inlet and downward outlet mode, the matched pipeline design is more complex, particularly, the inlet pipeline has higher pressure and temperature, the unreasonable design can lead to thermal expansion and elastic reaction force generated by the pipeline to act on the inlet pipe orifice of the TRT, when the temperature exceeds the allowable range, the deformation of the casing exceeds the standard, and a lighter causes the coaxiality of a bearing hole for supporting the rotor to exceed the difference, so that the turbine rotor loses dynamic balance and generates severe vibration or flange leakage; the heavy person makes the clearance between the blade and the shell uneven, even the blade interferes with the shell, so that the turbine unit can not start.

At present, a main stream design in China is that a section of large pull rod compensator is arranged in a fixed section of an inlet pipe so as to absorb the thermal deformation of a pipeline which is vertically upwards connected with the inlet pipe orifice, and a spring limiting support is arranged below the vertical pipeline so as to prevent the influence of the displacement deformation of a horizontal pipeline on the inlet pipe orifice. When the spring limit support is unreasonable in design, the limit function cannot be realized, and the excessive elastic counter force of the spring limit support directly acts on the inlet pipe orifice of the equipment to produce adverse effects on the operation of the unit. Therefore, how to design a reasonable support to reduce the pipe acting force on the inlet pipe orifice of the TRT is a problem to be solved in the design of the TRT pipe.

Disclosure of Invention

One of the purposes of the application is to provide a telescopic limit support to solve the problem that the support for the existing blast furnace gas residual pressure power generation device has larger acting force on the pipe of the inlet pipe orifice.

The technical scheme of the application is as follows:

the telescopic limiting support comprises an inner guide seat and an outer guide seat, wherein a plurality of first sliding friction plates are arranged on the outer peripheral wall of the inner guide seat at intervals, and a plurality of second sliding friction plates which are in one-to-one correspondence with the first sliding friction plates are arranged on the inner peripheral wall of the outer guide seat at intervals; the outer guide seat is sleeved on the inner guide seat in a vertically movable manner through the first sliding friction plate and the second sliding friction plate.

As a technical scheme of the application, the inner guide seat comprises a bottom plate, a plurality of reinforcing rib plates and a cuboid supporting plate; the supporting plate is arranged at the middle position of the bottom plate; a plurality of reinforcing rib plates are respectively arranged on the bottom plate and are respectively connected to the lower parts of the side surfaces of the supporting plate in the circumferential direction; the first sliding friction plates are respectively mounted at upper positions of respective side surfaces in the circumferential direction of the support plate.

As a technical scheme of the application, the supporting plate comprises a steel plate, two first I-steels and two second I-steels; the two first I-beams are respectively arranged on the top surface and the bottom surface of the steel plate; the two second I-steel are respectively arranged on two opposite side surfaces of the steel plate.

As a technical scheme of the application, the reinforcing rib plates and the first sliding friction plates are four.

As a technical scheme of this application, the circumference of bottom plate is upwards seted up the round and is run through the bolt hole at the bottom of the top.

As a technical scheme of the application, the outer guide seat comprises four groups of limiting baffles and four groups of L-shaped connecting plates; the adjacent limit baffles are connected through the connecting plates and are jointly enclosed to form a cylindrical structure.

As a technical scheme of this application, every group limit baffle's top all is provided with the bolt hole that can be connected with the pipeline bracket.

As a technical scheme of this application, every group the connecting plate all includes long board and short board, long board with pass through bolted connection between the short board.

The beneficial effects of this application:

in the telescopic limit support of the application, the telescopic limit support can limit deformation of a pipeline and does not generate displacement, and meanwhile, elastic counter force cannot be generated. The device reaches flexible purpose through the relative slip between the first sliding friction piece and the second sliding friction piece between inboard guide holder and the outside guide holder, simultaneously owing to close joint between inboard guide holder and the outside guide holder, consequently both can form a rigid body and play spacing effect. When the equipment vibrates and is transmitted to the vertical pipeline, the vertical pipeline can generate vertical displacement deformation through the support without causing the deformation of the pipeline, and meanwhile, the thermal deformation of the vertical pipeline can be eliminated through the vertical displacement deformation of the support; because the bracket is used for fixedly connecting the ground and the pipeline together, the horizontal limiting effect can be achieved, namely, the deformation of the horizontal pipeline can not affect the vertical pipeline and can not generate horizontal displacement, so that the device pipe orifice flange can not be misplaced, and meanwhile, the excessive thrust reaction on the pipe orifice is avoided. Therefore, the device has the advantages of simple structure, low cost, small required space, good durability and convenient manufacture, installation and replacement.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present application and therefore should not be considered as limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic view of a retractable limiting support according to an embodiment of the present application;

fig. 2 is a schematic view of an inner guide seat provided in an embodiment of the present application;

FIG. 3 is a cross-sectional view of AA in FIG. 2;

FIG. 4 is a cross-sectional view of BB in FIG. 2;

fig. 5 is a schematic view of an outer guide seat provided in an embodiment of the present application;

fig. 6 is a top view of an outer guide seat provided in an embodiment of the present application;

fig. 7 is a schematic view of installation of a retractable limiting support according to an embodiment of the present application.

Icon: 1-an inner guide seat; 2-an outer guide seat; 3-a first sliding friction plate; 4-a bottom plate; 5-reinforcing rib plates; 6-supporting plates; 7-limiting baffles; 8-connecting plates.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present application, it should be noted that, the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship that the inventive product is conventionally put in use, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and therefore should not be construed as limiting the present application.

Furthermore, in this application, unless expressly stated or limited otherwise, a first feature may include first and second features being in direct contact, either above or below, or through additional features being in contact therewith. Moreover, the first feature being above, over, and on the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being below, beneath, and beneath the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is less level than the second feature.

Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

Examples:

referring to fig. 1, and referring to fig. 2 to 7 in combination, the present application provides a telescopic limit support, which includes an inner guide seat 1 and an outer guide seat 2, wherein the outer guide seat 2 is sleeved on the inner guide seat 1 in a manner of moving up and down; the inner guide seat 1 comprises a bottom plate 4, a plurality of reinforcing rib plates 5 and a support plate 6 which is in a cuboid shape, wherein the support plate 6 is arranged at the middle position of the bottom plate 4, and the plurality of reinforcing rib plates 5 are respectively arranged on the bottom plate 4 and are respectively connected to the lower positions of all sides of the support plate 6 in the circumferential direction; a plurality of first sliding friction plates 3 are mounted on the outer peripheral wall of the support plate 6 at intervals, and the first sliding friction plates 3 are mounted at upper positions on respective side surfaces in the circumferential direction of the support plate 6, respectively. The outer guide seat 2 comprises four groups of limiting baffles 7 and four groups of L-shaped connecting plates 8; adjacent limit baffles 7 are connected through a connecting plate 8 and are jointly enclosed into a cylindrical structure; a plurality of second sliding friction plates which are in one-to-one correspondence with the first sliding friction plates 3 are arranged on the inner peripheral wall of the outer guide seat 2 at intervals, and the second sliding friction plates are respectively arranged on the inner walls of the limit baffles 7; the outer guide seat 2 is sleeved on the inner guide seat 1 in a vertically movable manner through a first sliding friction plate 3 and a second sliding friction plate with lower friction coefficients, and the four groups of the first sliding friction plates 3 and the second sliding friction plates are in gapless contact.

Further, the support plate 6 includes a steel plate, two first i-beams, and two second i-beams; the two first I-steel plates are respectively arranged on the top surface and the bottom surface of the steel plate; the two second I-steel are respectively arranged on two opposite side surfaces of the steel plate.

In this embodiment, the reinforcing rib plates 5 and the first sliding friction plates 3 are four, and the reinforcing rib plates 5 are disposed on four sides of the supporting plate 6 to ensure that the support has sufficient supporting strength. And, the circumference of bottom plate 4 is seted up the round and is run through the bolt hole at the top and bottom to fix this support on ground or other supports, in order to play the limiting displacement.

In addition, the top of each group of limiting baffles 7 is provided with a bolt hole which can be connected with a pipeline bracket. Meanwhile, each group of connecting plates 8 comprises a long plate and a short plate, and the long plate and the short plate are connected through bolts; the connecting plate 8 is connected with the limit baffle 7 through bolts, nuts and spring washers, so that the outer guide seat 2 can be tightly attached to the inner guide seat 1 during installation.

The first sliding friction plate 3 and the second sliding friction plate are made of materials with low friction coefficients, such as polytetrafluoroethylene and the like, and the materials are the materials with the lowest friction coefficients in solid materials, so that very small friction force is generated, and the influence on the pipe orifice of the equipment is reduced. In addition, the material with low friction coefficient in the scheme is not limited to polytetrafluoroethylene, and the specific material can be determined according to practical situations.

The support is connected with the pipeline bracket through the bolts and nuts, and the lower support is connected with the support pier, so that the pipeline can only vertically and vertically displace and cannot horizontally displace, and the pipe orifice flange of the equipment can be ensured not to horizontally dislocate.

In summary, in the telescopic limiting support of the present application, it can limit the deformation of the pipeline and does not generate displacement, and simultaneously, does not generate elastic counter force. The device achieves the purpose of expansion and contraction through the relative sliding between the first sliding friction plate 3 and the second sliding friction plate between the inner guide seat 1 and the outer guide seat 2, and simultaneously, the inner guide seat 1 and the outer guide seat 2 are closely connected, so that a rigid body can be formed between the inner guide seat 1 and the outer guide seat 2, and the limiting effect is achieved. When the equipment vibrates and is transmitted to the vertical pipeline, the vertical pipeline can generate vertical displacement deformation through the support without causing the deformation of the pipeline, and meanwhile, the thermal deformation of the vertical pipeline can be eliminated through the vertical displacement deformation of the support; because the bracket is used for fixedly connecting the ground and the pipeline together, the horizontal limiting effect can be achieved, namely, the deformation of the horizontal pipeline can not affect the vertical pipeline and can not generate horizontal displacement, so that the device pipe orifice flange can not be misplaced, and meanwhile, the excessive thrust reaction on the pipe orifice is avoided. Therefore, the device has the advantages of simple structure, low cost, small required space, good durability and convenient manufacture, installation and replacement.

The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. The telescopic limit support is characterized by comprising an inner guide seat and an outer guide seat, wherein a plurality of first sliding friction plates are arranged on the outer peripheral wall of the inner guide seat at intervals, and a plurality of second sliding friction plates which are in one-to-one correspondence with the first sliding friction plates are arranged on the inner peripheral wall of the outer guide seat at intervals; the outer guide seat is sleeved on the inner guide seat in a vertically movable manner through the first sliding friction plate and the second sliding friction plate.

2. The retractable spacing support according to claim 1, wherein the inner guide seat comprises a bottom plate, a plurality of reinforcing ribs and a support plate in the shape of a cuboid; the supporting plate is arranged at the middle position of the bottom plate; a plurality of reinforcing rib plates are respectively arranged on the bottom plate and are respectively connected to the lower parts of the side surfaces of the supporting plate in the circumferential direction; the first sliding friction plates are respectively mounted at upper positions of respective side surfaces in the circumferential direction of the support plate.

3. The retractable and spacing support according to claim 2, wherein the support plate comprises a steel plate, two first i-beams and two second i-beams; the two first I-beams are respectively arranged on the top surface and the bottom surface of the steel plate; the two second I-steel are respectively arranged on two opposite side surfaces of the steel plate.

4. The retractable and spacing support according to claim 2, wherein the reinforcing rib plate and the first sliding friction plate are four.

5. The retractable and spacing support of claim 2, wherein a ring of bolt holes extending through the top and bottom are formed in the periphery of the base plate.

6. The retractable limiting support according to claim 1, wherein the outer guide seat comprises four sets of limiting baffles and four sets of L-shaped connecting plates; the adjacent limit baffles are connected through the connecting plates and are jointly enclosed to form a cylindrical structure.

7. The retractable stop-holder of claim 6, wherein the top of each set of stop-plates is provided with a bolt hole connectable to the pipe bracket.

8. The retractable and spacing support of claim 6, wherein each set of said connection plates includes a long plate and a short plate, said long plate and said short plate being bolted together.