CN212361520U

CN212361520U - Novel pipeline sweeps target plate fixer

Info

Publication number: CN212361520U
Application number: CN202020804598.0U
Authority: CN
Inventors: 苏弘杰; 黄进
Original assignee: Fourth Construction Co ltd Of China National Chemical Engineering
Current assignee: Fourth Construction Co ltd Of China National Chemical Engineering
Priority date: 2020-05-14
Filing date: 2020-05-14
Publication date: 2021-01-15
Anticipated expiration: 2030-05-14

Abstract

The invention relates to a novel pipeline purging target plate fixer, which comprises a main pipe, a first sleeve, a second sleeve and a target frame, wherein the first sleeve and the second sleeve are coaxial and are arranged on two outer sides of the main pipe in a manner of being vertical to the axis of the main pipe, the other end of the first sleeve is provided with a flange, a blind plate is connected through a bolt, a metal winding pad corresponding to the pound level is arranged between the flange and the blind plate, the target frame vertically penetrates through the blind plate at the central position of the blind plate and exposes 10mm of the blind plate, and the target frame is fixed by welding double-sided corner welds on two sides of the blind plate. The other end of the second sleeve is welded with a sealing plate, two sides of the center of the sealing plate are respectively provided with a cuboid stop dog, the stop dogs penetrate through the sealing plate, double-face corner welds on two sides of the sealing plate are welded and fixed, and the clear distance between the two stop dogs is equal to the thickness of the target stand. The target frame is provided with two mounting holes which are respectively positioned in the first sleeve and the second sleeve after being mounted, and the blind plate is provided with a handle. The invention has simple structure, convenient use and low cost.

Description

Novel pipeline sweeps target plate fixer

Technical Field

The invention relates to a pipeline purging target plate fixer, in particular to a fixing structure and light weight treatment of the fixer.

Background

In a steam pipe piping process of a steam engine, inevitable impurities such as rust and welding slag remain inside the pipe. If the impurities are brought into the steam turbine rotating at high speed, the steam unit is stopped due to the fact that the vibration value exceeds the standard, the rotor of the steam unit is seriously damaged directly, even the whole steam turbine unit needs to be replaced, and great economic loss is caused. Therefore, before the steam unit is put into use, in order to ensure normal operation, the inside of the pipeline must be purged by steam, and the purging effect is based on the target plate trace detection result.

Conventional target plate holders suffer from three drawbacks:

firstly, in order to increase the strength of the target plate fixer, a target frame is usually made of a section bar such as a channel steel, a steel plate with the same width as the target plate is welded on one side of the section bar, and the root part of the target frame is reinforced by a rib plate. In order to install the target frame, a sleeve with a large caliber needs to be selected, and a flange and a blind plate of the closed sleeve are matched with the sleeve, so that the specification is large. The manufacturing process is both consumable and time-consuming, and the weight of the target plate fixer is very large, so that at least 3 persons are needed to complete the work when the target plate is replaced every time. The flange is large in specification, the number of bolts is large, and long time is consumed when the bolts are tightened in the processes of disassembling the target frame and purging each time;

second, the conventional target holder fixes only one end, and the large purge pressure and the target holder vibration caused by unstable steam flow increase the possibility of target holder breakage. In the actual operation process, the phenomenon of blowing off the target stand often occurs;

thirdly, because the fixing bolt position of target plate is located the face of sweeping, will influence the target plate to a certain extent and sweep the inspection judgement of effect to influence steam conduit and sweep the acceptance of quality.

Disclosure of Invention

The invention aims to improve and innovate the defects and problems in the prior art and provides a stable and reliable pipeline purging target plate fixer with less material consumption, small volume, light weight and convenient use.

The technical scheme includes that the novel pipeline purging target plate fixing device comprises a main pipe, a first sleeve, a second sleeve and a target frame, the first sleeve and the second sleeve are coaxial and perpendicular to the axis of the main pipe and are arranged on the two outer sides of the main pipe, the other end of the first sleeve is provided with a flange, a blind plate is connected through a bolt, a metal winding pad corresponding to the pound level is arranged between the flange and the blind plate, the target frame vertically penetrates through the blind plate at the center of the blind plate and exposes 10mm of the blind plate, and the target frame is fixed on the two sides of the blind plate through double-sided fillet welding. The shrouding is set up in the welding of the sheathed tube other end of second, the both sides at shrouding center respectively set up the dog of a cuboid, and the dog runs through the shrouding, and at shrouding both sides dihedral corner weld welded fastening, two dogs distribute along the steam flow direction, and the clear distance equals with the thickness of target frame. The target frame is provided with two mounting holes matched with the mounting bolts in size, the clear distance between the two mounting holes is larger than the diameter of the main pipe, the two mounting holes are respectively positioned in the first sleeve and the second sleeve after being mounted, and the blind plate is provided with a handle;

wherein, the material of target frame, dog, shrouding, first sleeve pipe, second sleeve pipe, flange, blind plate is selected for use and the specification calculation is as follows table show:

in order to strengthen the connection strength of the first sleeve, the second sleeve and the main pipe, reinforcing plates are arranged at the connection parts of the first sleeve and the main pipe and the connection parts of the second sleeve and the main pipe.

The invention has the advantages and beneficial effects that:

in the traditional target plate fixer, the target frame is made of more materials, and the diameter of the sleeve is large. The invention replaces the section bar with the strip steel plate, cancels the reinforcing rib plate, can meet the blowing requirement of the steam pipeline under almost all working conditions by only 2 to 4 inches of sleeve pipe through calculation, greatly saves the manufacturing material and saves the manufacturing cost.

Traditional target plate fixer, it is bulky, weight is heavy, if need demolish next use, need occupy great storage space, keep with big costsly, generally sweep and accomplish the back direct abandonment. The invention is small and portable, can be disassembled for reuse after purging is finished, and further reduces the cost.

In the use process of the traditional target plate fixer, at least 3 persons are needed to complete the replacement of the target plate. The target plate replacing work can be completed by only 1 person, the time consumption is less, and the labor cost is greatly saved.

The number of the connecting bolts of the traditional target plate fixer is as much as 20, even more, and the time is long when the target frame is disassembled and the bolts are tightened by heat. The number of the bolts is only 4 to 8, so that the time for disassembling and hot-fastening the bolts is greatly shortened, the time is saved, and the cost is saved.

Because the traditional target plate fixer is provided with the fixing bolt on the blowing surface, certain influence can be generated on the acceptance of the blowing result, and the acceptance efficiency is reduced. The novel target plate fixer designs the bolt into the sleeves at the two ends, so that no other interference facilities exist on the effective blowing and scanning surface of the target plate, and the acceptance efficiency is improved.

The traditional target plate fixer is only fixed at one end, and the target frame is easy to break due to vibration of the target frame caused by unbalanced steam flow in the purging process. The target stand is fixed at two ends, one end of the target stand is welded with the blind plate and is permanently fixed, and the other end of the target stand is in zero-clearance fit with the stop block and can be detachably fixed, so that the target stand is effectively prevented from being cracked due to vibration.

The traditional target plate fixer is generally subjected to material selection construction by field experience, and certain quality and safety risks exist in the purging process. The invention can calculate the material selection, specification and size of each part of the target plate fixer according to the actual blowing condition of the project and the requirement of the table, so that the quality and safety of the blowing process are ensured while the size of the novel pipeline blowing target plate fixer is minimized.

Drawings

Fig. 1 is a schematic perspective view of the embodiment.

Fig. 2 is a schematic perspective view of another view angle of the embodiment.

FIG. 3 is a cross-sectional view of the embodiment with the arrows showing the steam flow direction.

Fig. 4 is a schematic view of the assembled relationship of the target stand and the target plate.

FIG. 5 is a flow chart of the process for manufacturing the novel tube purging target plate holder.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "disposed" on another element, it can be directly disposed or attached to the other element or intervening elements may also be present. The terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Example 1

A novel pipeline purging target plate fixer comprises a main pipe 1, a first sleeve pipe 2, a second sleeve pipe 3 and a target frame 4, wherein the first sleeve pipe 2 and the second sleeve pipe 3 are coaxial and are perpendicular to the axis of the main pipe 1, a flange 5 is fixedly arranged at the other end of the first sleeve pipe 2, the flange 5 is connected with a blind plate 7 through a bolt 6, a gasket 8 is arranged between the flange 5 and the blind plate 7, one end of the target frame 4 vertically penetrates through the center of the blind plate 7, a sealing plate 9 is welded at the other end of the second sleeve pipe 3, two cuboid-shaped check blocks 10 are respectively arranged at two sides of the center of the sealing plate 9, the two check blocks 10 are distributed along the steam flow direction, the clear distance is equal to the thickness of the target frame 4, two mounting holes 12 with single-head bolts 11 are arranged on the target frame 4 and used for mounting a target plate, and the clear distance of the two mounting holes 12 is larger than the diameter of the main pipe 1, after being installed, the blind plates are respectively positioned in the first sleeve 2 and the second sleeve 3, and the blind plates 7 are provided with handles 13;

the joints of the first sleeve 2 and the second sleeve 3 with the main pipe 1 are provided with reinforcing plates 14.

The target frame 4, the stop block 10, the seal plate 9, the first sleeve, the second sleeve, the flange and the blind plate are made of materials and have the following specification calculation as shown in the table:

because of the mutual constraint among all parameters, a certain calculation sequence is required during calculation, the calculation is started from the width and the thickness of the target frame, and the calculation sequence is detailed in the following table:

order of computation	Data value
		1	W₂、t₂
2	D₁
		3	t_sd、t₃、L ₁
4	Flange and blind plate model selection
		5	t_pd、L

Based on the equations for the components in the table above, a typical project calculation results are shown in the following table:

in order to meet the technical requirements, the manufacturing method has a certain sequence, the first sleeve side part is installed first, and then the second sleeve side part is installed, and the specific manufacturing requirements and steps are shown in fig. 5.

Compared with the traditional target plate fixer, the target plate fixer has simple structure and less manufacturing materials: the bar-shaped steel plate replaces a section bar, the reinforcing rib plate is omitted, the working condition requirement can be met only by two-to-four-inch sleeves, the bar-shaped steel plate can be repeatedly used, manufacturing materials are greatly saved, and manufacturing cost is saved. Correspondingly, due to the fact that the size is reduced, the weight is reduced, and the number of bolts is reduced, the target plate can be replaced by only one person, time consumption is less, and labor cost is saved. The bolt for mounting the target plate is positioned in the sleeve, and the main pipe is avoided, so that the part of the target plate positioned in the main pipe is an effective blocking surface, the interference of the bolt is removed, and the acceptance efficiency is improved.

The embodiments of the present invention are described only for the preferred embodiments of the present invention, and not for the limitation of the concept and scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the design concept of the present invention shall fall into the protection scope of the present invention, and the technical content of the present invention which is claimed is fully set forth in the claims.

Claims

1. The utility model provides a novel pipeline sweeps target plate fixer which characterized in that: the double-face angle welding target frame comprises a main pipe, a first sleeve pipe, a second sleeve pipe and a target frame, wherein the first sleeve pipe and the second sleeve pipe are coaxial and are perpendicular to the axis of the main pipe, the first sleeve pipe and the second sleeve pipe are arranged on two outer sides of the main pipe, the other end of the first sleeve pipe is provided with a flange, a blind plate is connected through a bolt, a metal winding pad corresponding to the pound level is arranged between the flange and the blind plate, the central position of the blind plate is provided with the target frame, the blind plate vertically penetrates through the blind plate and is exposed by 10mm, the target frame is fixed by welding double-face angle welding at two sides of the blind plate, the other end of the second sleeve pipe is welded with a sealing plate, two cuboid check blocks are respectively arranged at two sides of the center of the sealing plate and penetrate through the sealing plate, the double-face angle welding at two sides of the sealing plate is fixed by welding, the two check blocks are distributed along the steam flow, after being installed, the blind plates are respectively positioned in the first sleeve and the second sleeve, and the blind plates are provided with handles; wherein, the material of target frame, dog, shrouding, first sleeve pipe, second sleeve pipe, flange, blind plate is selected for use and the specification calculation is as follows table show:

2. the novel tube purging target plate holder as set forth in claim 1, wherein: the target frame is designed as a strip steel plate.

3. The novel tube purging target plate holder as set forth in claim 1, wherein: and reinforcing plates are arranged at the joints of the first sleeve and the second sleeve with the main pipe.