CN114619092A - Automatic cutting and positioning device for valve sealing weld joint - Google Patents
Automatic cutting and positioning device for valve sealing weld joint Download PDFInfo
- Publication number
- CN114619092A CN114619092A CN202111660915.1A CN202111660915A CN114619092A CN 114619092 A CN114619092 A CN 114619092A CN 202111660915 A CN202111660915 A CN 202111660915A CN 114619092 A CN114619092 A CN 114619092A
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- Prior art keywords
- valve
- positioning sleeve
- sleeve
- hole
- positioning
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D21/00—Machines or devices for shearing or cutting tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D33/00—Accessories for shearing machines or shearing devices
- B23D33/10—Stops for positioning work
Abstract
The utility model belongs to the technical field of nuclear power, concretely relates to valve seal welding seam automatic cutout positioner. In the disclosure, the positioning sleeve is of a cylindrical structure, the positioning sleeve is provided with through holes penetrating through the upper surface and the lower surface of the sleeve along the axial direction, a valve rod and a valve seat of a valve to be processed are positioned in the through holes, and each radial tightening bolt is used for limiting the axial relative displacement between the positioning sleeve and the valve; each tangential puller bolt is used for limiting the relative rotation between the positioning sleeve and the valve; the end face nut is in threaded connection with the upper end of the valve rod, and the lower end of the end face nut is pressed against the upper surface of the positioning sleeve and used for limiting axial relative displacement between the positioning sleeve and the valve. Therefore, stable support can be provided for pipeline cutting equipment, the problems that manual cutting of the high-temperature gas cooled reactor helium system valve seal welding is difficult, machining quality is unstable, workload of operators is large and the like are effectively solved, and cutting quality and efficiency of the valve seal welding are improved.
Description
Technical Field
The invention belongs to the technical field of nuclear power, and particularly relates to an automatic cutting and positioning device for a valve sealing weld joint.
Background
The high-temperature gas cooled reactor adopts helium as a reactor core coolant and helium as small molecular gas, and the requirement on the system tightness is very strict, so that valves of a helium system of the high-temperature gas cooled reactor basically adopt a seal welding structure, if the valves leak in the long-time operation process, a layer of thin seal welding can be built on the outer ring of the leakage position in a build-up welding mode, and the risk of valve leakage can be rapidly and thoroughly eliminated. However, when the helium system valve needs to be disassembled for maintenance, the valve can be disassembled only by cutting and removing the sealing weld, and the valve body cannot be excessively cut off when the sealing weld is required to be removed. Receive the restriction of complicated interface space in scene, often the operation space is narrow and small, adopt the saw blade cutting at present more, manual mode such as angle grinder is polished is sealed the welding seam cutting and is got rid of, because of differences such as welding seam height, width, surface hardness, the hand tool location is unreliable, slide easily, the cutter collapses the sword and damages easily, whole sealed welding seam cutting is got rid of inefficiency, work load is big, and the welding seam is got rid of the quality unstability, influence later stage valve welding and repack, in addition, the helium system valve is located high irradiation region, operating personnel working cycle is long, the irradiation dosage is high, be unfavorable for the radiation optimization management. Therefore, it is highly desirable to improve the efficiency and quality of the removal of the sealing bead.
Disclosure of Invention
In order to overcome the problems in the related art, the automatic cutting and positioning device for the valve sealing welding line is provided.
According to an aspect of the embodiments of the present disclosure, there is provided a valve seal weld automatic cutting and positioning device, including: the positioning device comprises a positioning sleeve, a plurality of radial tightening bolts, a plurality of tangential tightening bolts and end face nuts;
the positioning sleeve is of a cylindrical structure, a through hole penetrating through the upper surface and the lower surface of the sleeve is axially formed in the positioning sleeve, a valve rod and a valve seat of a valve to be machined are positioned in the through hole, the upper end of the valve rod extends out of an upper opening of the through hole, and the edge of the bottom end of the sleeve is pressed against the upper surface of the lower end of the valve seat;
each radial puller bolt is in threaded connection with the side wall of the sleeve, the end part of each radial puller bolt, which extends into the through hole, presses against the side surface of the valve seat or the valve rod, and each radial puller bolt is used for limiting the valve to generate radial displacement;
each tangential puller bolt is in threaded connection with the side wall of the sleeve, the part of each tangential puller bolt, which is inserted into the through hole, is tangent to the valve seat, and each tangential puller bolt is used for limiting the rotation of the valve;
the end face nut is in threaded connection with the upper end of the valve rod, and the lower end of the end face nut presses against the upper surface of the positioning sleeve and is used for limiting the positioning sleeve to generate axial displacement.
In a possible realization, the inner wall shape of the through hole is matched with the outer shape of the valve rod assembled with the valve seat.
In one possible implementation, the inner diameter of the lower end opening of the through hole is larger than the inner diameter of the upper end opening.
In one possible implementation, the radial jacking bolts and the tangential jacking bolts are the same size.
In a possible implementation manner, the radial jacking bolts are uniformly distributed on the side surface of the positioning sleeve.
In one possible implementation, the distance between the lower end of the positioning sleeve and the sealing weld of the valve is greater than 10 mm.
According to an aspect of the embodiments of the present disclosure, there is provided a machining method, which is applied to the above-mentioned automatic cutting and positioning device for a valve sealing weld, the method including:
measuring data required by processing and repairing according to the position and the adjacent structure of a sealing weld of the valve to be disassembled;
selecting pipeline cutting equipment according to the measured data and the structure of the valve sealing weld joint;
mounting the positioning device on a valve body of the valve, and continuously adjusting a jacking bolt on the valve sealing weld joint automatic cutting positioning device until the coaxiality of the positioning sleeve and the valve rod meets the processing requirement;
installing and fixing a fixing structure of the pipeline cutting equipment to the outer side of the positioning sleeve, adjusting a cutter of the pipeline cutting equipment to be opposite to a valve seal welding position, and adjusting the pipeline cutting equipment to enable the pipeline cutting equipment to be coaxial with the valve rod;
starting the pipeline cutting equipment to perform valve seal welding cutting until the seal welding seam and the heat affected zone thereof are completely removed;
and (5) checking that the valve seal weld is completely cut in place, and disassembling the pipeline cutting equipment and the automatic cutting and positioning device of the valve seal weld.
The beneficial effect of this disclosure lies in: in the disclosure, the positioning sleeve is of a cylindrical structure, the positioning sleeve is provided with a through hole penetrating through the upper surface and the lower surface of the sleeve along the axial direction, a valve rod and a valve seat of a valve to be processed are positioned in the through hole, the upper end of the valve rod extends out of an upper opening of the through hole, and the edge of the bottom end of the sleeve is pressed against the upper surface of the lower end of the valve seat; each radial tightening bolt is in threaded connection with the side wall of the sleeve, the end part of each radial tightening bolt, which extends into the through hole, presses against the side surface of the valve seat or the valve rod, and each radial tightening bolt is used for limiting the axial relative displacement generated between the positioning sleeve and the valve; each tangential puller bolt is in threaded connection with the side wall of the sleeve, the part of each tangential puller bolt, which is inserted into the through hole, is tangent to the valve seat, and each tangential puller bolt is used for limiting the relative rotation between the positioning sleeve and the valve; the end face nut is in threaded connection with the upper end of the valve rod, and the lower end of the end face nut is pressed against the upper surface of the positioning sleeve and used for limiting axial relative displacement between the positioning sleeve and the valve. Therefore, stable support can be provided for pipeline cutting equipment, the problems that manual cutting of the high-temperature gas cooled reactor helium system valve seal welding is difficult, machining quality is unstable, workload of operators is large and the like are effectively solved, and cutting quality and efficiency of the valve seal welding are improved.
Drawings
FIG. 1 is a schematic diagram illustrating an automatic valve seal weld cutting and positioning apparatus according to an exemplary embodiment.
FIG. 2 is a schematic diagram illustrating an automatic valve seal weld cutting and positioning apparatus according to an exemplary embodiment.
FIG. 3 is a schematic diagram of a valve shown in accordance with an exemplary embodiment.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments.
FIG. 1 is a schematic diagram illustrating an automatic valve seal weld cutting and positioning apparatus according to an exemplary embodiment. FIG. 3 is a schematic diagram of a valve shown in accordance with an exemplary embodiment. As shown in fig. 1 and 3, the automatic cutting and positioning device for the valve seal weld comprises a positioning device including a positioning sleeve 201, an upper radial tightening bolt 202, a lower tangential tightening bolt 203, and an end nut 204, wherein the radial tightening bolt 202 and the tangential tightening bolt 203 may be designed to be of a universal interchangeable structure. The positioning sleeve 201 is of a hollow cylindrical structure, wherein the lower end of the positioning sleeve is provided with a large opening, the upper end of the positioning sleeve is provided with a small opening, the shape of the inner wall of a through hole of the positioning sleeve 201 is matched with the shapes of the valve rod 103 and the valve seat 102 of the valve 1, the valve rod 103 and the valve seat 102 can penetrate through the through hole, the positioning sleeve 201 is sleeved on the valve seat 102, the lower end of the positioning sleeve is higher than the sealing weld 101 of the valve 1 by at least 10mm, and the positioning sleeve 201 can be machined and molded by stainless steel or aluminum alloy and other materials with higher strength; the radial tightening bolt 202 and the tangential tightening bolt 203 can adopt stainless steel tightening screws, so that enough supporting strength is ensured; the face nut 204 may be machined from a stainless steel material with a thread gauge that matches the upper end thread of the valve stem 103 of the valve 1.
Fig. 2 is a schematic diagram of an automatic valve seal weld cutting and positioning device according to an exemplary embodiment, and referring to fig. 2, the following operations may be performed in an application example:
step 3, starting the pipeline cutting equipment 3 to cut the valve seal welding 101 until the seal welding 101 and the heat affected zone thereof are completely removed;
and 4, checking that the valve seal welding 101 is completely cut in place, and disassembling the pipeline cutting equipment 3 and the positioning device 2.
Having described embodiments of the present disclosure, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terms used herein were chosen in order to best explain the principles of the embodiments, the practical application, or technical improvements to the techniques in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (6)
1. The utility model provides a valve seal welding seam automatic cutout positioner, its characterized in that, valve seal welding seam automatic cutout positioner includes: the positioning sleeve comprises a positioning sleeve, a plurality of radial puller bolts, a plurality of tangential puller bolts and an end face nut;
the positioning sleeve is of a cylindrical structure, a through hole penetrating through the upper surface and the lower surface of the sleeve is axially formed in the positioning sleeve, a valve rod and a valve seat of a valve to be machined are positioned in the through hole, the upper end of the valve rod extends out of an upper opening of the through hole, and the edge of the bottom end of the sleeve is pressed against the upper surface of the lower end of the valve seat;
each radial tightening bolt is in threaded connection with the side wall of the sleeve, the end part of each radial tightening bolt, which extends into the through hole, presses against the side surface of the valve seat or the valve rod, and each radial tightening bolt is used for limiting the axial relative displacement between the positioning sleeve and the valve;
each tangential puller bolt is in threaded connection with the side wall of the sleeve, the part of each tangential puller bolt, which is inserted into the through hole, is tangent to the valve seat, and each tangential puller bolt is used for limiting the relative rotation between the positioning sleeve and the valve;
the end face nut is in threaded connection with the upper end of the valve rod, and the lower end of the end face nut presses against the upper surface of the positioning sleeve and is used for limiting axial relative displacement between the positioning sleeve and the valve.
2. The automatic valve seal weld cutting and positioning device according to claim 1, wherein the shape of the inner wall of the through hole is matched with the outer shape of the valve rod assembled with the valve seat.
3. The automatic valve seal weld cutting and positioning device according to claim 1, wherein the inner diameter of the lower end opening of the through hole is larger than the inner diameter of the upper end opening.
4. The automatic valve seal weld cutting and positioning device of claim 1, wherein the radial jacking bolts and the tangential jacking bolts are the same size.
5. The automatic valve seal weld cutting and positioning device according to claim 1, wherein the radial tightening bolts are uniformly distributed on the side surface of the positioning sleeve.
6. The automatic valve seal weld cutting and positioning device of claim 1, wherein the lower end of the positioning sleeve is spaced from the valve seal weld by a distance greater than 10 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111660915.1A CN114619092A (en) | 2021-12-31 | 2021-12-31 | Automatic cutting and positioning device for valve sealing weld joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111660915.1A CN114619092A (en) | 2021-12-31 | 2021-12-31 | Automatic cutting and positioning device for valve sealing weld joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114619092A true CN114619092A (en) | 2022-06-14 |
Family
ID=81898463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111660915.1A Pending CN114619092A (en) | 2021-12-31 | 2021-12-31 | Automatic cutting and positioning device for valve sealing weld joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114619092A (en) |
-
2021
- 2021-12-31 CN CN202111660915.1A patent/CN114619092A/en active Pending
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