CN113977960A

CN113977960A - Facility and method for correcting deflection in press fitting process of electric melting pipeline and pipe fitting

Info

Publication number: CN113977960A
Application number: CN202111072303.0A
Authority: CN
Inventors: 毛卿
Original assignee: Jiangxi Baokai Technology Co ltd
Current assignee: Jiangxi Baokai Technology Co ltd
Priority date: 2021-09-14
Filing date: 2021-09-14
Publication date: 2022-01-28

Abstract

A device and a method for correcting deflection in the press-fitting process of electric melting pipes and pipe fittings are arranged on a press-fitting disk and used for observing and correcting deflection in the assembly of the electric melting pipes and the pipe fittings in real time in the press-fitting process. The device comprises an unbalance loading detection marker post, wherein a multicolor engraving ring is arranged at the upper end of the unbalance loading detection marker post, a marker post connecting screw is connected to the lower end of the unbalance loading detection marker post, a plurality of mounting holes are formed in a crimping disc, and the marker post connecting screw is matched in the mounting holes. Compared with the prior art that the assembly deflection of the electric melting pipeline and the pipe fitting is observed by a direct pipe, the assembling deflection of the electric melting pipeline and the pipe fitting is much easier and more obvious, the press fitting requirement is matched, the inclination phenomenon is amplified in time through the deflection load detection marker rod, because the progress difference of two color codes is the largest in the direction with the largest deflection, the color ring of a multicolor engraved wire ring is reflected to be inconsistent relative to the pipe fitting opening to find the deflection, the deflection load and the deflection can be mastered in real time and adjusted by a wooden hammer, the press fitting is carried out smoothly, and the phenomenon of lapping on the assembling surface is avoided.

Description

Facility and method for correcting deflection in press fitting process of electric melting pipeline and pipe fitting

Technical Field

The invention relates to the field of pipeline press-fitting, in particular to a method for observing and checking deflection and correcting deflection in real time through a multi-color ring rod and accessories thereof in the press-fitting process of an electric melting pipeline.

Background

The industrial steel skeleton-polyethylene composite pipeline and pipe fitting are made up by using continuously-wound welded netted steel skeleton, high-density polyethylene and synchronously extruding and one-step-formed double-face anticorrosive pressure pipeline and using steel cylinders with different shapes and made up by using punched steel sheet as reinforcing skeleton and polyethylene through injection moulding, and are called electric smelting pipeline and pipe fitting for short, and include electric smelting sleeve (direct), various angle elbows, tee joints and reducing pipe fittings. The conveying medium of the industrial steel skeleton plastic composite pipe mainly takes various chemical liquid, brine and solid-liquid mixture taking water as a carrier, other liquid corrosive media are conveyed to meet the corrosion resistance of polyethylene plastic, and the tolerance range of a pipeline to the media can be provided by manufacturers.

The rated pressure of the electric smelting pipeline is higher. Because the industrial medium is transported, the requirement of the industrial medium on the pipeline is that the rated pressure is 16 kilograms per square centimeter without leakage, the rated pressure is greatly different from the rated pressure of 4 kilograms of domestic tap water, and in the industrial pipeline, generally, many large pipelines are provided, the flow area of the valve is in many cases larger than that of the domestic tap water pipeline, and in the case of the large flow area, the medium is throttled or opened by the valve, the operation frequency is greatly higher than that of the domestic water pipeline, the density of the transported medium can be far higher than that of water, so the inertia of the medium is larger, the water hammer phenomenon is easily generated repeatedly, namely, the possibility of generating the water hammer phenomenon is higher than that of the tap water pipeline, and the destructive fluid pressure is generated by the water hammer phenomenon, so that the welding seam of the pipeline and the pipeline for transporting the medium can bear large pressure, the molding conditions of the plastic during welding of the welding seam are much inferior to those during injection molding.

Therefore, the assembly process is very important for ensuring the welding quality. Therefore, the anti-leakage requirement of the industrial pipeline is far higher than that of the civil tap water pipeline. This is the reason why the design value of the rated pressure of the industrial pipeline is multiplied higher than the rated pressure of the tap water pipe.

In the prior art, when an electric melting pipeline and a pipe fitting are assembled, a hammering mode is basically used. Due to the limitation of the installation space, when hammering is carried out and elbows of 90 degrees and 45 degrees are assembled with a longer pipeline, proper stress positions of multiple points cannot be found when the pipe fitting is hammered; when the pipeline is beaten, the pipeline is beaten too far, and the elasticity of the pipeline greatly weakens the assembly effect, so that the assembly is seriously hindered. During assembly, the interference magnitude between the pipeline and the pipe fitting and the fit has to be reduced, namely, the fit cylindrical surface of the electric melting pipeline is excessively polished so as to reduce the assembly resistance, so that the assembly is facilitated, and the welding quality is influenced due to the interference magnitude. This is because the plastic molding pressure needs to be provided during welding by the interference fit generated during assembly, and the molding pressure directly affects the welding quality. In the prior art, when no auxiliary instrument is used manually, the deflection possibly generated in the assembling process is observed, and a hand hammer is used for directly striking the electric melting pipe and the pipe fitting to correct the deflection generated in the assembling process. The most effective hammer point when the pipe is longer is at the end of the pipe, where the hammer pipe end is located a great distance from the pipe, and there is little way to strike the drop hammer target-wise based on the observed deflection. Direct observation of pipe and pipe deflections during assembly, especially when the deflections are not large, is not felt at all, and when the deflections are large, lapping of the assembly faces has already occurred. This results in a blindly released hammer during assembly. It is very inconvenient to correct the impact point of the deflection without knowing the direction of the deflection, and the effect of correcting the deflection is very poor or not at all, so that a lapping flaw is easily formed on the assembly surface, and the lapping flaw forms an air cavity at the welding seam, and the air in the air cavity cannot be discharged from the welding seam during welding, so that the welding quality is seriously influenced after welding.

Disclosure of Invention

In view of the problems set forth in the background, the present invention provides a multi-color ring rod for real-time observation and deflection inspection of electric smelting pipe press fitting to solve the problems of assembly force unbalance loading and deflection during assembly, and is further described below.

The utility model provides an electric smelting pipe pressure equipment is surveyed in real time and is examined polygenetic ring stick that incline was used, installs and to survey the incline that appears in the assembly in real time on the crimping dish for the pressure equipment in-process and correct, includes that the unbalance loading detects the marker post, and unbalance loading detects the marker post upper end and is equipped with the polychrome and carves the wire loop, and the lower tip that the unbalance loading detected the marker post is connected with the marker post connecting screw, be provided with a plurality of mounting holes on the crimping dish, marker post connecting screw cooperation in this mounting hole. Because the pipe diameter of the common electric smelting pipe is greatly different, for example, the electric smelting pipe with the diameter as large as 600 drift diameters is arranged, under the existing technology of assembling by hammering or distributing a high-handle chain block, the electric smelting pipe is not only difficult to assemble, but also the condition of drawing and grinding caused by assembling deflection is accompanied with the whole assembling stage.

Preferably, the multicolor ring rod is provided with different number of unbalance loading detection mark rods due to different diameters of press-fitting pipelines, and the eccentric loading detection mark rods are arrayed on the central circumference of the press-fitting disk, so that no matter a pair of press-fitting nuts opposite to each other are spun randomly during press-fitting, the eccentric loading detection mark rods can timely and accurately reflect the positions of branch openings of the adjacent multicolor ring rod and pipe fittings.

Preferably, the unbalance loading detection marking rod is provided with two small mirrors with adjustable visual angles, and the two color rings opposite to the center of the pipeline are observed respectively, the progress difference of the two color rings is the largest, and the deviation position is in the direction. The method is particularly suitable for large drift diameter, and can be used for conveniently observing assembly deflection caused by unbalance loading when the space is limited.

Preferably, the offset load detection marker rod has the function of amplifying the offset condition existing in press fitting and intuitively reflects the comparison between the positions of the color ring of the multicolor ring rod and the branch opening of the pipe fitting. The specific method comprises the following steps: each set of two small mirrors (figure 8) with adjustable visual angles has the same structure, and the length of the rods is different according to the different drift diameters of the press-fitting pipelines. When in use, the pressing progress is observed at approximately the same visual angle near the multicolor reticle ring on the unbalance loading detection mark rod with the two opposite spacing tubes. If the deflection occurs, the progress difference is larger than that of the adjacent deflection detection marker rods in comparison of homochromatic rings on the deflection detection marker rods opposite to the partition pipe at the position close to the plane where the deflection occurs, so that the deflection is easily found, and the deflection degree is amplified and is very visual.

During assembly, the multicolor carving ring with obvious marks and uniform arrangement is manually compared with the branch opening position of the pipe fitting in real time, and the progress condition of each part along with press mounting can be observed. Because the position distribution of the unbalance loading detection marking rod is reasonable, as long as the deviation occurs in the assembly, the long rod has the effect of amplifying the deviation, under the assistance of the small mirror with the adjustable visual angle of the paired accessories, the multicolor engraving ring on the different unbalance loading detection marking rods can be conveniently compared with the position of the pipe fitting branch opening, the two small mirrors with the adjustable visual angles are used for observation, the uniform visual angle can be realized, and the observation result can correctly reflect the actual error. Therefore, the assembling deflection and the position with less progress in the deflection can be intuitively found in time, if the progress is inconsistent, the position with less progress on the crimping disc is struck by adopting a wood hammer or a rubber hammer, and a screw cap screwed into the position nearby is added in time after the crimping disc is struck; therefore, the deflection is timely and conveniently corrected, and the condition that the assembly surface is lapped due to overlarge deflection is effectively prevented.

Has the advantages that: compared with the prior art, the method has the advantages that the assembly deflection of the pipeline and the pipe fitting is easier and more obvious to directly observe, the press-fitting requirements are matched, the inclination is timely amplified through the deflection load detection marking rod, the hammering part which is easy to hammer is very convenient to correct the deflection, and the damage to the pipeline caused by directly hammering the pipeline is avoided. When the deviation direction is judged, a wood hammer or a rubber hammer is adopted to strike the part with less progress on the crimping disc, and a screw cap screwed into the position nearby is added in time after the crimping disc is struck; therefore, the deflection is timely and conveniently corrected, and the condition that the assembly surface is lapped due to overlarge deflection is effectively prevented. So that the press fitting is smoothly carried out. In the prior art, when no auxiliary instrument is manually used, when the deflection possibly occurring in the assembling process is observed, the deflection is not easy to be found, the judgment of the deflection part is difficult to be accurate, a hand hammer is used for directly striking an electric fusion tube and a pipe fitting to correct the deflection occurring in the assembling process, the selectable force application points are few, the force application direction is difficult to be correct, the deflection correcting effect is poor, therefore, a lapping flaw is easy to form on the assembling surface, and the welding quality is seriously influenced by the air existing in the lapping flaw.

Drawings

FIG. 1: the invention discloses a structural schematic diagram of an unbalance loading detection marker post;

FIG. 2: 1, an enlarged schematic view of the structure at A;

FIG. 3: directly pressing a drawing by electric smelting;

FIG. 4: electric melting reducing press mounting drawing;

FIG. 5: comparison of the multicolor engraving ring and the pipe branch port B-enlargement and A-rotation enlargement of figure 6;

FIG. 6: elbow press-mounting drawing

FIG. 7: three-way press mounting diagram

FIG. 8: the structure of the small mirror with adjustable visual angle is shown schematically.

In the figure: 100-crimping disc; 101-a pipeline; 102-press fitting bolt holes; 105-an offset load detection marker post; 106-multicolor engraving ring; 107-marker post connecting screw; 800-direct electric smelting; 1300-reducing by electric smelting; 400-elbow press fitting tool; 401-press mounting a support plate; 402-butterfly nut 403-press-fitting screw rod; 404-pressing a nut; 406-a blocking plate; 407-stop plate hold down bolt; 408-installing a transition plate; 131-a mirror with the back surface connected with the soft rod through a spherical hinge; 132-a soft rod; 133-hollow hard rod; 134-ball joint; 900-three-way press mounting frame; 307-power-on plug; 1100-tee fitting; 300-90 degrees elbow.

Detailed Description

Specific embodiments of the present invention will be described in detail below with reference to fig. 1-8.

A multicolor ring rod for real-time observation and inspection of deflection in electric smelting pipe press fitting is installed on a press fitting disc 100 and used for real-time observation and correction of deflection in the press fitting process, and comprises an offset load detection marker rod 105, wherein a multicolor engraving ring 106 is arranged at the upper end of the offset load detection marker rod 105, a marker rod connecting screw 107 is connected to the lower end of the offset load detection marker rod 105, a plurality of installation holes are formed in the press fitting disc 100, and the marker rod connecting screw 107 is matched in the installation holes.

During assembly, the progress of each part can be observed manually in real time with the help of a small mirror with an adjustable visual angle, which is shown in fig. 8, and obviously marked and uniformly arranged multicolor carving rings 106. The small mirror with the adjustable visual angle can conveniently and uniformly observe the visual angle, avoid the mode that people rotate the color ring around the pipe fitting, and the visual angle difference which appears because of the limited space and inevitably generates the progress judgment error because of the visual angle difference. The invention can clearly and intuitively find out the possible assembly deflection in time and the position with less progress in the deflection; if the progress is inconsistent, a wooden hammer or a rubber hammer is adopted to strike the part with less progress, and a screw cap screwed into the position nearby is added in time after the crimping disc 100 is struck, so that the deviation is timely and conveniently adjusted, and the condition that the assembly surface is pulled and ground due to overlarge deviation is effectively prevented.

When in use, the crimping disc 100 is installed on the electric smelting tube, and two crimping nuts 404 are synchronously spun simultaneously in a spiral symmetrical mode according to the crimping principle so as to ensure the installation precision; to ensure the accuracy of the observation, the said multi-color ring rods are different in number and number with respect to the central circumferential array of the press-fitting discs 100 due to the different diameters of the press-fitting channels, so that no matter whether a pair of press-fitting nuts are pressed in any opposite direction (the "opposite" means that the line connecting the two nuts passes through the channel axis) during press-fitting, they can be timely and accurately reflected on the nearby multi-color ring rods. And each set of two small mirrors (figure 8) with adjustable visual angles has the same structure, and the length of the rod is different according to the different drift diameters of the press-fitting pipelines. When in use, the pressing progress is observed at approximately the same visual angle by placing two by two adjacent multicolor engraving rings 106 on the offset load detection marking rod 105 opposite to the spacing tube. If the deflection occurs, the progress difference is larger than that of the adjacent deflection detection mark rod 105 when the same-color ring on the deflection detection mark rod 105 opposite to the separation tube is compared at the position close to the plane where the deflection occurs, and when the opposite pair of press-fitting screw caps has larger deflection, the position difference of the two opposite pipeline axes near the screw caps, namely the connecting line of the two detection mark rods, passing through the color ring on the detection mark rod at the center of the pipeline is the largest, so that the deflection is easy to find, and the deflection degree is amplified and is very visual.

Whether assembly deflection occurs or not is confirmed by observing the multicolor carving line ring 106 on the deflection load detection marking rod 105 at different positions constantly and differently changing the positions of branch openings of the pipe fittings, and compared with the prior art, the method has the advantages that: the method can be conveniently mastered in real time and used for adjusting the offset load and the offset by using a wooden hammer, and the method for correcting the offset is simple and effective, so that the press mounting is smoothly carried out.

It should be noted that, with the increase of the press-fitting depth, the automatic guiding function when the pipeline is pressed into the pipe fitting for assembly is continuously enhanced, the deflection quantity during assembly is greatly reduced, and the mode of correcting the assembly deflection by hammering is almost not needed.

Compared with the prior art that the pipeline and the pipe fitting are assembled with the deflection by a direct pipe, the invention is much easier and more obvious, the deflection is amplified in time through the deflection detection marker rod by matching the press-fitting requirement, and finally the deflection is reflected on the color ring dislocation of the multicolor engraving ring. By adjusting 131-the angle of the mirror 131 with the back surface connected with the soft rod through a spherical hinge; adjusting the soft rod 132; adjusting the lightweight hollow hard rod 133; the best observation line can be obtained by adjusting the spherical hinge joint 134 on the hollow hard rod, so that the deflection direction can be mastered in real time, the deflection load and the deflection can be adjusted by using a wooden hammer, the pulling and grinding on the assembly surface can be avoided, the press fitting can be smoothly carried out, and the welding quality can be greatly improved. This patent recites electrofusion 800; electrically melting and reducing 1300; a 90 degree elbow 300; the press fit process for tee 1100.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A facility and a method for correcting deflection in the press fitting process of electric melting pipelines and pipe fittings are arranged on a press-fitting disk (100) for observing and correcting deflection occurring in assembly in real time in the press fitting process, and are characterized in that:

detect marker post (105) including the unbalance loading, the unbalance loading detects marker post (105) upper end and is equipped with polychrome carving wire ring (106), and the lower tip that the unbalance loading detected marker post (105) is connected with marker post connecting screw (107), be provided with a plurality of mounting holes on crimping dish (100), marker post connecting screw (107) cooperation in this mounting hole, still include the little mirror of an adjustable visual angle, under its assistance, can conveniently detect on the marker post through different unbalance loadings and compare with the pipe fitting props up a mouthful position to accomplish unified visual angle, make the observation result can correctly reflect actual error.

2. The multicolored ring rod of claim 1 wherein:

the multicolor ring rods are different in number of unbalance loading and deflection detection mark rods (105) due to different diameters of press-fitting pipelines, and are arrayed in a central circumference of the press-fitting disk (100).

3. The multicolored ring rod of claim 1 wherein:

the deflection and deflection detection marker rod (105) amplifies deflection conditions existing during press fitting and reflects the deflection conditions on color ring dislocation of the multicolor ring rod.

4. The multicolored ring rod of claim 1 wherein:

during assembly, real-time manual work is carried out through the multi-color line carving rings (106) which are obvious in marks and are uniformly arranged, the progress condition of each part can be observed, the possible assembly deviation and the part with less progress in the deviation can be clearly and intuitively found in time, if the progress is inconsistent, a wood hammer or a rubber hammer is adopted to strike the part with less progress, and a screw cap screwed into the position nearby is added in time after the crimping disc (100) is struck; therefore, the deflection can be timely and conveniently adjusted, and the condition that the assembly surface is lapped due to overlarge deflection can be effectively prevented.