CN110076485B

CN110076485B - Clockwork spring attaching type lining device for pipeline welding

Info

Publication number: CN110076485B
Application number: CN201910356072.2A
Authority: CN
Inventors: 赵海洋; 孟庆武; 陈桂娟; 张茗瑄; 李文秀; 闫浩然
Original assignee: Northeast Petroleum University
Current assignee: Daqing Qingdong Hongyun Technology Co.,Ltd.
Priority date: 2019-04-29
Filing date: 2019-04-29
Publication date: 2021-02-05
Anticipated expiration: 2039-04-29
Also published as: CN110076485A

Abstract

A spiral spring attaching type gasket device for pipeline welding. The main purpose is to provide a pipeline welding auxiliary tool used for improving the welding quality when welding small and medium-diameter pipelines. The method is characterized in that: the device comprises a copper alloy sheet liner, a sliding pad, an elastic sheet, a liner guide wheel, a long shaft, a guide wheel pin, a support barrel, two bearings, a wheel support, a small wheel, a pin shaft, a connecting barrel, a swing handle, a torque screw, a fixing frame and a T-shaped screw, wherein the copper alloy sheet liner is used for plugging a pipeline welding groove. The gasket device is small in radial size, the purpose of plugging a welding groove is achieved by utilizing the spring type gasket to stretch and attach to the inner wall of a steel pipe, the gasket device can be applied to welding construction of middle and small-diameter pipelines, and the gasket device is simple in structure and convenient to use.

Description

Clockwork spring attaching type lining device for pipeline welding

Technical Field

The invention relates to a pipeline welding auxiliary tool used for improving welding quality during welding of small and medium-diameter pipelines.

Background

The use of a weld pad can greatly improve the quality of the weld. At present, pipeline welding mouth-aligning devices with gasket parts are developed at home and abroad, and the gasket technology is applied to the welding process of large-diameter pipelines. However, the medium and small caliber pipeline cannot be installed in a pipeline welding butt joint device with a complex structure due to the narrow radial space. In recent years, some simple devices for plugging a pipeline welding groove by splicing small blocky gaskets exist, but when a plurality of blocky gaskets are spliced, gaps are more, and the plugging effect is poor. Therefore, no mature liner device is applied in the welding process of the medium and small caliber pipeline.

Disclosure of Invention

In order to solve the technical problems mentioned in the background technology, the invention provides the spiral spring binding type gasket device with smaller radial size, the spiral spring type gasket is utilized to be spread and bound on the inner wall of the steel pipe to achieve the purpose of blocking a welding groove, the spiral spring type gasket can be applied to the welding construction of middle and small-diameter pipelines, and the gasket device is simple in structure and convenient to use.

The technical scheme of the invention is as follows: the clockwork spring attaching type gasket device for welding the pipeline comprises a copper alloy thin gasket for plugging a pipeline welding groove, and is characterized in that: the device also comprises a sliding pad, an elastic sheet, a gasket guide wheel, a long shaft, a guide wheel pin, a support barrel, two bearings, a wheel support, a small wheel, a pin shaft, a connecting barrel, a swing handle, a torque screw, a fixed frame and a T-shaped screw;

the liner is in a hair strip shape and is provided with a ceramic coating; the inner side of the gasket is provided with a small hole for mounting the gasket at the front end of the long shaft through a bolt and a nut; a small section axially extends out of the outer side of the gasket, and two small holes are formed in the small section and are used for being connected with the sliding pad and the elastic sheet through screws;

the sliding pad is made of copper alloy materials and used for reducing the friction resistance with the pad guide wheel; the sliding pad is in a small long block shape, and a groove is processed below the sliding pad and is used for being in contact with the gasket guide wheel; threaded holes are processed at two ends of the sliding pad and are used for being connected with the liner and the elastic sheet through screws;

the elastic sheet is a stainless steel strip thin plate and has elasticity; two small holes are respectively processed at two ends of the elastic sheet and are used for respectively realizing the connection with the sliding pad or the bracket barrel through screws;

the gasket guide wheel is an eccentric wheel with a semi-arc surface at the outer edge, is arranged at the front end of the long shaft and is used for controlling the radial movement of the outer side of the gasket; the outer edge of the gasket guide wheel is a half arc surface with the diameter involute changing, the arc surface of the gasket guide wheel is in contact with the groove of the sliding pad, and the gasket guide wheel pushes the sliding pad to move in the radial direction through the diameter change of the arc surface in the rotating process; the starting and stopping position of the arc surface of the outer edge of the gasket guide wheel is a boss for limiting the rotation angle; the inner side cylinder of the gasket guide wheel is radially drilled and used for fixing the gasket guide wheel in the front of the long shaft through a guide wheel pin;

the long shaft is a slender rod-shaped shaft and is used for transmitting rotation torque; the front part of the long shaft is inserted into the two bearings; a small section of semi-cylinder and two holes are machined at the front end of the long shaft, one hole and the semi-cylinder are used for installing the gasket, and the other hole is used for inserting the guide wheel pin; a key groove is processed at the tail end of the long shaft, is matched with the head of the torque screw and is used for transmitting the torque of the swing handle to the long shaft;

the guide wheel pin is a small cylindrical pin, is inserted into a second small hole at the front end of the long shaft and is used for connecting the gasket guide wheel with the long shaft;

the support cylinder is in a cylindrical shape, and large holes at two ends of the inner wall are used for mounting two bearings; drilling two small threaded holes on a boss at the rear part of the outer wall, and installing an elastic sheet through a screw; 3 groups of 6 threaded holes are radially processed on the circumference of the support cylinder at an angle of 120 degrees avoiding the boss, and 3 wheel supports are installed through bolts; 4 threaded holes are processed at the rear part of the support cylinder, and the connecting cylinder is installed through bolts;

the bearings are two small copper alloy cylinders and are arranged at two ends of an inner hole of the support cylinder and used for reducing the friction resistance of the rotation of the long shaft;

the wheel bracket is a long strip plate, two ends of which are welded with two groups of support lugs, and the two groups of support lugs are used for mounting two small wheels; two holes are processed on the strip plate, and the wheel bracket is fixed on the side surface of the bracket barrel through bolts;

the small wheel and the pin shaft are arranged on the wheel bracket and used for reducing the friction resistance of the device moving in the axial direction of the pipeline;

the support device comprises a support barrel, a wheel bracket, a wheel support, a small wheel, a pin shaft, a support device and a support device, wherein the wheel bracket 1, the small wheel 2 and the pin shaft form a group of support components, the three groups of support components are arranged on the support barrel in a circumferential 120-degree angle, and the front part of the support device is provided with a;

the connecting cylinder is a long cylinder and is used for connecting the head part and the tail part of the device; 4 small holes are processed at the front end of the connecting cylinder and connected with the bracket cylinder through bolts; the tail end of the connecting cylinder is provided with an arc notch for clamping the swinging handle;

the swinging handle is a short rod welded with a ring and used for wrenching the long shaft to rotate; a threaded hole is drilled in the circular ring and used for mounting a torque screw;

the torque screw is a standard component of a positioning screw at a slotted cylindrical end, is arranged in a threaded hole of the swing handle, and the cylindrical end at the head is inserted into a key groove at the tail part of the long shaft, so that the swing handle and the long shaft can axially slide but cannot relatively rotate;

the fixing frame is formed by welding a cylinder and 4 small steel plates, and the cylinder is sleeved at the rear part of the connecting cylinder and is fixed by a jackscrew; the steel plate on the outer side of the fixing frame is provided with a threaded hole for mounting a T-shaped screw;

the T-shaped screw is a T-shaped cylinder, the head of the T-shaped screw is provided with an external thread, and the T-shaped screw is arranged in a threaded hole of the fixing frame and used for being tightly propped against the outer wall of the tail end of the steel pipe.

The invention has the following beneficial effects: firstly, the gasket device provided by the invention has smaller radial size and is suitable for medium and small caliber pipelines; secondly, the overall clockwork gasket adopted by the invention reduces the amount of gaps blocked by a plurality of block gaskets, and has good blocking effect; in addition, the spiral spring type gasket adopted by the invention has large expansion and contraction amount, is suitable for the change of the inner diameter of the pipeline, and does not need to replace gaskets with different sizes; thirdly, the liner device has a simple structure and is very convenient to operate.

Description of the drawings:

FIG. 1 is a cross-sectional view of a gasket device;

FIG. 2 is a cross-sectional view of the device with the liner retracted away from the tube wall;

FIG. 3 is a cross-sectional view of a portion of the liner as it contracts;

FIG. 4 is a cross-sectional view of the portion of the gasket guide wheel with the gasket retracted;

FIG. 5 is a cross-sectional view of the device with the liner stretched against the vessel wall;

FIG. 6 is a cross-sectional view of a portion of the cushion when the cushion is expanded;

FIG. 7 is a cross-sectional view of the spacer guide wheel portion with spacers expanded;

FIG. 8 is a perspective view of the pad;

FIG. 9 is a perspective view of a spacer guide wheel;

FIG. 10 is a front view of the elastic sheet;

FIG. 11 is a front view of the slide pad;

FIG. 12 is a cut-away top view of the slide pad;

FIG. 13 is a cross-sectional view of a holder cartridge and the like;

FIG. 14 is a cut-away front view of the stent holder;

FIG. 15 is a left side view of the stent cartridge;

FIG. 16 is a front view of the wheel carriage;

FIG. 17 is a cut-away top view of the wheel carriage;

FIG. 18 is a front view of the major axis;

FIG. 19 is a top view of the long axis;

FIG. 20 is a cutaway front view of the connector barrel;

FIG. 21 is a top view of the connector barrel;

FIG. 22 is a cross-sectional view of a mount or the like;

FIG. 23 is a front view of the mount;

FIG. 24 is a cut-away left side view of the mount;

FIG. 25 is a cross-sectional view of a swing handle or the like;

FIG. 26 is a cross-sectional view of the swing handle;

fig. 27 is a front view of the t-screw.

In the figure: 1. a liner; 2. a slide pad; 3. an elastic sheet; 4. a long axis; 5. a holder barrel; 6. a bearing; 7. a connecting cylinder; 8. a fixed mount; 9. a T-shaped screw; 10. swinging a handle; 11. a torque screw; 12. a small wheel; 13. a pin shaft; 14. a wheel support; 15. a gasket guide wheel; 16. a guide wheel pin; 17. a steel pipe; 18. and (7) welding seams.

The specific implementation mode is as follows:

the invention will be further described with reference to the accompanying drawings in which:

the technical scheme adopted by the invention for solving the technical problems is as follows: the device comprises a liner, a sliding pad, an elastic sheet, a liner guide wheel, a long shaft, a guide wheel pin, a support cylinder, a bearing, a wheel support, a small wheel, a pin shaft, a connecting cylinder, a swing handle, a torque screw, a fixing frame and a T-shaped screw.

The liner is a copper alloy sheet, and a thin ceramic coating is plasma sprayed on the outer surface of the liner for improving the burning loss resistance; the shape of the liner is similar to that of a clockwork spring and is used for plugging a pipeline welding groove. A small hole is processed at one end of the inner side of the lining spring and is arranged at the front end of the long shaft through a bolt and a nut; the outside of the gasket axially extends for a small section, and two small holes are processed and connected with the sliding pad and the elastic sheet through screws.

The sliding pad is made of copper alloy materials and used for reducing the friction resistance with the pad guide wheel; the sliding pad is in a shape of a small long strip, and a groove is processed on the lower surface of the sliding pad and is in contact with the gasket guide wheel; threaded holes are processed at two ends of the sliding pad and are connected with the liner and the elastic sheet through screws.

The elastic sheet is a stainless steel strip thin plate, has high elasticity and is used for springback and shrinkage of the outer edge of the gasket; two small holes are respectively processed at the two ends of the elastic sheet and are connected with the sliding pad or the bracket barrel through screws.

The gasket guide wheel is an eccentric wheel with a semi-arc surface at the outer edge, is arranged at the front end of the long shaft and is used for controlling the radial movement of the outer side of the gasket; the outer edge of the gasket guide wheel is a half arc surface with the diameter involute changed, the arc surface is in contact with the sliding pad groove, and the gasket guide wheel pushes the sliding pad to move in the radial direction through the diameter change of the arc surface in the rotating process; the starting and stopping position of the arc surface of the outer edge of the gasket guide wheel is a boss for limiting the rotation angle; the inner cylinder of the lining guide wheel is radially drilled and fixed in front of the long shaft through a guide wheel pin.

The long shaft is a slender rod-shaped shaft and is used for transmitting rotation torque; the front part of the long shaft is inserted into two bearings at the front part of the device; a small section of semi-cylinder and two holes are processed at the front end of the long shaft, one hole and the semi-cylinder are used for installing a gasket, and the other hole is used for inserting a guide wheel pin; the tail end of the long shaft is provided with a key groove which is matched with the head of the torque screw and used for transmitting the torque of the swing handle to the long shaft.

The guide wheel pin is a small cylindrical pin and is inserted into a second small hole in the front end of the long shaft to connect the gasket guide wheel with the long shaft.

The support cylinder is in a cylindrical shape, and large holes at two ends of the inner wall are used for mounting two bearings; drilling two small threaded holes on a boss at the rear part of the outer wall, and installing an elastic sheet through a screw; 3 groups of 6 threaded holes are radially processed on the circumference of the support cylinder at an angle of 120 degrees avoiding the boss, and 3 wheel supports are installed through bolts; 4 threaded holes are processed at the rear part of the support cylinder, and the connecting cylinder is installed through bolts.

The bearing is two copper alloy small cylinders which are arranged at two ends of an inner hole of the support cylinder and used for reducing the friction resistance of the rotation of the long shaft.

The wheel bracket is a long strip plate, two ends of which are welded with two groups of support lugs, and the two groups of support lugs are used for mounting two small wheels; two holes are processed on the strip plate, and the wheel bracket is fixed on the side surface of the support cylinder through bolts.

The small wheel and the pin shaft are arranged on the wheel bracket and used for reducing the friction resistance of the device in the axial movement of the pipeline.

The supporting device is characterized in that a group of supporting components is formed by the 1 wheel support, the 2 small wheels and the pin shaft, the three groups of supporting components are arranged on the support barrel in a circumferential 120-degree angle mode, and the front portion of the supporting device is arranged in front of the supporting device.

The connecting cylinder is a long cylinder and is used for connecting the head part and the tail part of the device; 4 small holes are processed at the front end of the connecting cylinder and connected with the bracket cylinder through bolts; the tail end of the connecting cylinder is provided with an arc opening for clamping the swing handle.

The swinging handle is a short rod welded with a ring and used for wrenching the long shaft to rotate; and a threaded hole is drilled in the circular ring and used for installing a torque screw.

The torque screw is a standard component of a positioning screw at the slotted cylindrical end, is arranged in a threaded hole of the swing handle, and the cylindrical end at the head is inserted into a key groove at the tail part of the long shaft, so that the swing handle and the long shaft can axially slide but cannot relatively rotate.

The fixing frame is formed by welding a cylinder and 4 small steel plates, and the cylinder is sleeved at the rear part of the connecting cylinder and is fixed by a jackscrew; and the outer steel plate of the fixing frame is provided with a threaded hole for mounting a T-shaped screw.

The T-shaped screw is a T-shaped cylinder, the head of the T-shaped screw is provided with an external thread, the T-shaped screw is arranged in a threaded hole of the fixing frame and is used for being tightly propped against the outer wall of the tail end of the steel pipe, and the T-shaped screw is prevented from moving with the steel pipe.

The functional principle and the operation process of the device are as follows:

firstly, ensuring that a swing handle at the tail part of the device is separated from a tail end opening of the connecting cylinder, and the clockwork gasket curls and contracts under the action of self elasticity, so that the radial size is reduced; the device is then pushed into the steel pipe with the gasket at the to-be-welded groove of the steel pipe, and the two t-bolts are tightened without the fixation device moving (see fig. 2-4).

Secondly, pulling a swing handle at the tail part of the device, rotating the swing handle in a direction opposite to the rotating direction of the spring type gasket, clamping the swing handle at a notch at the tail end of the connecting cylinder, and then reversely expanding the spring type gasket to block a groove to be welded on the inner wall of the steel pipe; welding operations are then performed on the outside of the pipe (see fig. 5-7).

And thirdly, after the pipeline is welded, pulling a swing handle at the tail part of the device to separate the swing handle from a gap at the tail end of the connecting cylinder, enabling the clockwork gasket to be curled and shrunk under the action of self elasticity, reducing the radial size, separating the gasket from the welding line of the pipeline, and finally extracting the gasket device from the pipeline.

Claims

1. The utility model provides a clockwork spring laminating formula liner device of pipeline welding usefulness, the thin slice liner that is used for shutoff pipeline welding groove including copper alloy material which characterized in that: the device also comprises a sliding pad, an elastic sheet, a gasket guide wheel, a long shaft, a guide wheel pin, a support barrel, two bearings, a wheel support, a small wheel, a pin shaft, a connecting barrel, a swing handle, a torque screw, a fixed frame and a T-shaped screw;

the gasket guide wheel is an eccentric wheel with a semi-arc surface at the outer edge, is arranged at the front end of the long shaft and is used for controlling the gasket to move in the radial direction; the outer edge of the gasket guide wheel is a half arc surface with the diameter involute changing, the arc surface of the gasket guide wheel is in contact with the groove of the sliding pad, and the gasket guide wheel pushes the sliding pad to move in the radial direction through the diameter change of the arc surface in the rotating process; the starting and stopping position of the arc surface of the outer edge of the gasket guide wheel is a boss for limiting the rotation angle; the inner side cylinder of the gasket guide wheel is radially drilled and used for fixing the gasket guide wheel in the front of the long shaft through a guide wheel pin;

the support cylinder is in a cylindrical shape, and large holes at two ends of the inner wall are used for mounting two bearings; drilling two small threaded holes on a boss at the rear part of the outer wall, and installing an elastic sheet through a screw; 3 groups of 6 threaded holes are radially processed on the circumference of the support barrel to avoid the bosses, each group is separated by 120 degrees, and 3 wheel supports are installed through bolts; 4 threaded holes are processed at the rear part of the support cylinder, and the connecting cylinder is installed through bolts;

the bearing is a copper alloy small cylinder, is arranged at two ends of an inner hole of the support cylinder and is used for reducing the friction resistance of the rotation of the long shaft;

the support device comprises a support barrel, a wheel bracket, a small wheel bracket, a pin shaft, a support component and a support component, wherein the support component, the small wheel bracket and the pin shaft form a group, and the support component are arranged on the support barrel in a circumferential 120-degree angle;

the fixing frame is formed by welding a cylinder and 4 small steel plates, and the cylinder of the fixing frame is sleeved at the rear part of the connecting cylinder and is fixed by a jackscrew; the steel plate on the outer side of the fixing frame is provided with a threaded hole for mounting a T-shaped screw;