CN210549263U

CN210549263U - High-pressure pipeline is to mouthful construction equipment

Info

Publication number: CN210549263U
Application number: CN201921033551.2U
Authority: CN
Inventors: 侯立伟; 辛驰
Original assignee: Draz Group Co ltd
Current assignee: Draz Group Co ltd
Priority date: 2019-07-04
Filing date: 2019-07-04
Publication date: 2020-05-19
Anticipated expiration: 2029-07-04

Abstract

The utility model belongs to the technical field of thermal power factory high-pressure pipeline's alignment installation construction field of checking in pairs, especially high-pressure pipeline is to mouthful construction equipment, including the semicircle ring of two relative settings, two the semicircle ring supports the tight cooperation and constitutes a calorie and establish the ring in the high-pressure outside of tubes side of treating the checking in pairs, and symmetrical welding has a foraminiferous otic placode respectively at the both ends of each semicircle ring, realizes respectively through connecting bolt between the foraminiferous otic placode of each relative position department supporting tight cooperation, along the even interval welding a plurality of pipeline of its circumference on the lateral wall of each semicircle ring support the piece, two the semicircle ring is used for one of them high-pressure pipe that treats the butt joint of chucking, the pipeline supports the piece and is used for realizing supporting tightly the checking in pairs with the high-pressure pipe of treating on another high-pressure pipe that treats the butt joint. The beneficial effects are as follows: the pipeline aligning precision is high, and the construction quality is effectively improved; the leftover bits and pieces are fully utilized, the manufacturing is convenient, the environment is protected, and the method is economical and practical; the construction efficiency is high, the construction period is effectively shortened, and the construction cost is reduced.

Description

High-pressure pipeline is to mouthful construction equipment

Technical Field

The utility model belongs to the technical field of thermal power factory high-pressure pipeline's alignment installation construction and work and specifically relates to high-pressure pipeline is to mouthful construction equipment.

Background

The high-pressure pipeline of the thermal power plant has large engineering quantity, high pressure, high temperature, complex pipe wall thickness, complex pipe diameter specification, compact installation position and larger opening aligning difficulty; the quality problem directly influences the normal operation of the whole set of unit, which causes great economic loss and safety accident and great harm; therefore, the installation quality of the high-pressure pipeline is important to guarantee, and the opening aligning precision of the high-pressure pipeline is a necessary premise for guaranteeing the installation quality.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the technical scheme that one of above-mentioned technical problem adopted and be: high pressure pipeline is to mouthful construction equipment, including two semicircle rings that set up relatively, two the semicircle ring supports to tightly cooperate and constitutes a card and establish the ring in treating the high-pressure tube outside to mouthful, and the symmetrical welding has a foraminiferous otic placode respectively at the both ends of each semicircle ring, realizes respectively through connecting bolt between the foraminiferous otic placode of each relative position department and supports tightly the cooperation, along the even interval welding a plurality of pipeline of its circumference on the lateral wall of each semicircle ring and support the piece, two the semicircle ring is used for one of them high-pressure tube of treating the butt joint of chucking, the pipeline supports the piece and is used for treating the high-pressure tube of treating the butt joint on another high-pressure tube of treating the butt joint and two semicircle rings and realizes supporting tightly to mouthful.

Preferably, the pipeline abutting part comprises a supporting plate welded on the outer side wall of the semicircular ring, an adjusting nut is welded at the top of the supporting plate, the horizontal central axis of the adjusting nut penetrates through the vertical central axis of the semicircular ring, an abutting bolt is screwed in the adjusting nut, and the inner end of the abutting bolt is used for abutting against the outer side wall of the high-pressure pipe to be butted.

Preferably, the semicircular ring is formed by cutting leftover bits and pieces of the steel pipe.

The beneficial effects of the utility model are embodied in: 1. the pipeline aligning precision is high, and the construction quality is effectively improved; 2. the leftover bits and pieces are fully utilized, the manufacturing is convenient, the environment is protected, and the method is economical and practical; 3. the construction efficiency is high, the construction period is effectively shortened, manpower and machinery are saved, and the construction cost is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or components are generally identified by like reference numerals. In the drawings, elements or components are not necessarily drawn to scale.

Fig. 1 is a schematic structural diagram of the present invention.

3 fig. 32 3 is 3 a 3 schematic 3 sectional 3 view 3 taken 3 along 3 line 3 a 3- 3 a 3 of 3 fig. 3 1 3 ( 3 a 3 high 3- 3 pressure 3 pipe 3 with 3 a 3 butt 3 joint 3 to 3 be 3 performed 3) 3. 3

In the figure, 1, a semicircular ring; 2. A perforated ear plate; 3. a connecting bolt; 4. A pipe abutting member; 41. A supporting plate; 42. adjusting the nut; 43. tightly abutting against the bolt; 5. a high pressure pipe.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

As shown in fig. 1-2, the high-pressure pipeline aligning construction device comprises two semicircular rings 1 which are oppositely arranged, wherein the semicircular rings 1 are abutted and matched to form a circular ring which is clamped outside a high-pressure pipe 5 to be aligned, two ends of each semicircular ring 1 are respectively and symmetrically welded with a perforated ear plate 2, the perforated ear plates 2 at opposite positions are respectively abutted and matched through connecting bolts 3, a plurality of pipeline abutting pieces 4 are uniformly welded on the outer side wall of each semicircular ring 1 along the circumference at intervals, the semicircular rings 1 are used for clamping one high-pressure pipe 5 to be aligned, and the pipeline abutting pieces 4 are used for abutting the other high-pressure pipe 5 to be aligned and the high-pressure pipes 5 to be aligned on the two semicircular rings 1.

The manufacturing materials of the device can be processed by utilizing the leftover bits and pieces of the pipeline construction materials; the bolts can be made of the temporary high-strength bolts and nuts left at the joints of the boiler steel frame columns, so that the cost is saved to the maximum extent.

Preferably, the pipe abutting member 4 comprises a supporting plate 41 welded on the outer side wall of the semicircular ring 1, an adjusting nut 42 is welded on the top of the supporting plate 41, the horizontal central axis of the adjusting nut 42 passes through the vertical central axis of the semicircular ring 1, a fastening bolt 43 is screwed in the adjusting nut 42, and the inner end of the fastening bolt 43 is used for fastening the outer side wall of the high-pressure pipe 5 to be butted.

Preferably, the semicircular ring 1 is formed by cutting leftover bits and pieces of steel pipes.

The field construction and the working principle are as follows:

the high-pressure pipeline is technically handed over to constructors related to the front end of the butt joint, the materials, specifications and quantity of the weld joints of the pipelines of each system are uniformly handed over, and the butt joint deviation requirement of the pipelines of each specification is mainly handed over, so that the constructors can understand the technical requirements of the butt joint of the pipelines and can conveniently carry out the subsequent welding work.

The related equipment and materials are already in stock, the quality and the quantity meet the construction requirements, and continuous operation is ensured; the used mechanical equipment and tools are in normal states; the specification, measuring range and precision grade of the measuring instrument meet the requirements, and the transmission of the quantity value is ensured in the valid period; the welder needs to master the welding requirements and the material of the pipeline and prepare the relevant tools.

The hydrogen production project of eosin chemical industry limited company in Anqing is introduced as follows:

high-pressure pipeline material: 20G, 12Cr1 MoVG; specification: Φ 194 × 18, Φ 273 × 26, Φ 325 × 30, Φ 426 × 38, and the like; quantity: about 2100 meters. The engineering high-pressure pipeline is prefabricated in an industrial mode, and a groove does not need to be prepared on site. The construction method needs to prepare the aligning construction tools of the device with four specifications of phi 194 x 18, phi 273 x 26, phi 325 x 30 and phi 426 x 38.

The making and using of the aligning construction tool are as follows:

the high-pressure pipeline aligning tool can be manufactured on site:

1) cutting into 60 mm high rings with phi 194 × 18, phi 273 × 26, phi 325 × 30, and phi 426 × 38 tubes;

2) then cutting the two semi-circular rings 1 into two identical semi-circular rings along the center;

3) two perforated ear plates 2 are welded at the radial cut of each circular ring, and a round hole with phi 26 is machined in the center of each perforated ear plate 2;

4) the holed ear plate 2 is fixed by M24X 65 bolts, four supporting plates 41 are welded at equal intervals in the circumferential direction, and four M24 nuts are welded on the tops of the supporting plates 41. All the notches and the welding parts are polished smoothly.

5) The M24X 120 bolt is inserted into the nut, and the adjustment is carried out by the adjusting bolts in four directions during the opening aligning process of the high-pressure pipe 5. The mode is convenient and fast, the pipe aligning efficiency can be improved, and the coaxial alignment of the two high-pressure pipes 5 is ensured.

Note that: during installation of the high-pressure pipeline and the pipeline assembly, the interior of the pipeline is cleaned, no sundries are left in the pipeline, and the pipeline is temporarily blocked during construction. When the pipelines are combined for time setting, the aligning gap is uniform; the root of the inner wall should be flush.

Acceptance before welding: after the pipeline is aligned, the pipeline can be welded after being checked and accepted before being welded;

1. paint, dirt, rust and the like in the range of 10 mm-15 mm on the groove and each side of the inner wall and the outer wall of the pipeline are removed completely before the opening is aligned until the metallic luster is exposed. The base material in the groove and in the edge 20mm has no defects of cracks, heavy skin, groove damage, burrs and the like.

2. The local stagger value of the butt-joint single-side welding is not more than 10% of the wall thickness and is less than 1 mm;

3. the pipeline should be straight when opening to one's mouth, and except special requirement, welding angular deformation is measured at distance crater center 200mm department, and its allowance deviation of breaking over should be:

when the nominal diameter DN of the pipeline is less than 100mm, a is less than or equal to 2mm

When the nominal diameter DN of the pipeline is more than or equal to 100mm, a is less than or equal to 3mm

Welding: the pipeline can be handed over to weld to carry out spot welding and welding when the pipeline meets the requirement, wherein the pipeline is padded and fixed after the spot welding to prevent the pipeline from deforming in the welding or heat treatment process; welding is carried out according to the welding process strictly during welding, and the welding quality is guaranteed.

Quality control:

1. standard specification:

the Ministry of construction issued in 2011 "mandatory provisions of engineering construction standards (part of electric power engineering)

DL5190.5-2012 "technical specification for electric power construction, part 5: pipes and systems

DL/T869-2012 welding technical regulation of thermal power plant

DL/T5210.5-2009 part 5 of electric power construction quality acceptance and evaluation regulation: pipes and systems

DL/T5210.7-2010 electric power construction quality acceptance and evaluation code part 7: welding (of)

2. Whether the inside has debris before mainly checking the pipeline is to the mouth, whether clean up has been, whether the groove preparation accords with the relevant requirement of drawing and standard, whether the pipe fitting material has carried out the reinspection and has made obvious mark, whether has handled the check and acceptance procedure before the mouth to.

3. The main control details are shown in the following table

Quality standard

4. Filling content of quality records and intermediate handover requirements

4.1 filling of quality records includes: opening a box, counting, carrying out spectral analysis and receiving record on the equipment; device defect recording and processing recording; and (5) recording construction technology.

4.2 all records must meet the requirements of drawings and quality standards, and the quality records need to be obtained from a quality inspector and carefully filled in according to the requirements. The table indicates the person who measured, the date and the person who recorded.

4.3 quality records are filled in with a black stylus.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification; to those skilled in the art, any alternative improvements or changes made to the embodiments of the present invention are all within the scope of the present invention.

The parts of the present invention not described in detail are the known techniques of those skilled in the art.

Claims

1. High-pressure pipeline is to mouthful construction equipment, its characterized in that: including the semicircle ring of two relative settings, two the semicircle ring supports to tightly cooperate and constitutes a card and establish the ring in treating the high-pressure tube outside to mouthful, and the symmetrical welding has a foraminiferous otic placode respectively at the both ends of each semicircle ring, realizes supporting tightly the cooperation through connecting bolt respectively between the foraminiferous otic placode of each relative position department, along the even interval welding a plurality of pipeline of its circumference on the lateral wall of each semicircle ring and support the piece, two the semicircle ring is used for one of them high-pressure tube of treating the butt joint of chucking, pipeline support the piece and be used for treating the high-pressure tube realization of the butt joint of treating on another high-pressure tube of treating the butt joint and the two semicircle rings to support tightly to mouthful.

2. The high-pressure pipeline aligning construction device according to claim 1, wherein: the pipeline abutting part comprises a supporting plate welded on the outer side wall of the semicircular ring, an adjusting nut is welded at the top of the supporting plate, the horizontal central axis of the adjusting nut penetrates through the vertical central axis of the semicircular ring, an abutting bolt is screwed in the adjusting nut, and the inner end of the abutting bolt is used for abutting against the outer side wall of the high-pressure pipe to be butted.

3. The high-pressure pipeline aligning construction device according to claim 1, wherein: the semicircular ring is formed by cutting leftover bits and pieces of the steel pipe.