CN114378491A - Flameless preheating equipment for welding of pressure-bearing equipment - Google Patents
Flameless preheating equipment for welding of pressure-bearing equipment Download PDFInfo
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- CN114378491A CN114378491A CN202210000436.5A CN202210000436A CN114378491A CN 114378491 A CN114378491 A CN 114378491A CN 202210000436 A CN202210000436 A CN 202210000436A CN 114378491 A CN114378491 A CN 114378491A
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- 238000003466 welding Methods 0.000 title claims abstract description 36
- 238000010438 heat treatment Methods 0.000 claims abstract description 57
- 239000000725 suspension Substances 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000000712 assembly Effects 0.000 claims 1
- 238000000429 assembly Methods 0.000 claims 1
- 238000005457 optimization Methods 0.000 description 7
- 238000001514 detection method Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000004321 preservation Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000006356 dehydrogenation reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
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Abstract
The invention relates to the technical field of flameless preheating equipment, in particular to flameless preheating equipment for welding pressure-bearing equipment. The utility model provides a pressure-bearing equipment welding is with flameless preheating device, includes outside preheating device and inside preheating device, outside preheating device is used for preheating for pressure-bearing equipment welding department outside, inside preheating device is used for preheating for pressure-bearing equipment welding department inside, outside preheating device includes first preheating part and first support part, first support part set up in first preheating part downside, inside preheating part includes second support part and second preheating part, the second support part with second preheating part level sets up. Set up outside preheating device and preheat the pressure-bearing equipment seam crossing outside, set up inside preheating part and preheat pressure-bearing equipment seam crossing inboard, carry out high-efficient heating through electromagnetic heating's mode to pressure-bearing equipment's seam crossing, heating efficiency is high, and heat loss is few.
Description
Technical Field
The invention relates to the technical field of flameless preheating equipment, in particular to flameless preheating equipment for welding pressure-bearing equipment.
Background
Pressure-bearing devices refer to devices that are subjected to various pressures, such as air pressure, water pressure, nuclear radiation pressure, and the like. When pressure equipment in the nuclear power field is produced, the seam of the pressure equipment needs to be preheated to 150-200 ℃ before welding, the temperature needs to be kept at about 200 ℃ in the welding process, and after welding is completed, the temperature of the position of the seam needs to be increased to 350 ℃ and kept for 1-2 hours for dehydrogenation treatment.
In the prior art, the welding preheating of the pressure-bearing equipment mostly adopts a flame preheating method, so that the time consumption is long, the energy consumption is high, and the preheating efficiency is low.
Disclosure of Invention
In order to solve the problem of low welding preheating efficiency of the pressure-bearing equipment, the invention provides flameless preheating equipment for welding the pressure-bearing equipment.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a pressure-bearing equipment welding is with flameless preheating device, includes outside preheating device and inside preheating device, outside preheating device is used for preheating for pressure-bearing equipment welding department outside, inside preheating device is used for preheating for pressure-bearing equipment welding department inside, outside preheating device includes first preheating part and first support part, first support part set up in first preheating part downside, inside preheating part includes second support part and second preheating part, the second support part with second preheating part level sets up.
As an optimization, the first preheating part comprises a first connecting frame, a first temperature measuring part and a first heating part, the first connecting frame is a circular ring-shaped frame body, the first temperature measuring part and the first heating part are both arranged on the inner side of the first connecting frame, and the first connecting frame is in sliding connection with the first supporting part.
As an optimization, the first temperature measuring part comprises a plurality of first infrared thermometers, the plurality of first infrared thermometers are uniformly arranged on the inner side of the first connecting frame, the detecting end of the first infrared thermometers is arranged towards the axis of the first connecting frame, the first heating part comprises a connecting seat, a first electromagnetic heating assembly and a first telescopic rod, the connecting seat is rotatably connected with the first connecting frame, the first telescopic rod is connected between the first electromagnetic heating assembly and the connecting seat, and the axis of the first telescopic rod is arranged towards the axis of the first connecting frame.
Preferably, a circumferential rack is arranged on the front side of the first connecting frame, a first driving motor is arranged in the connecting seat, a driving gear is arranged on an output shaft of the first driving motor, the driving gear is meshed with the driving rack, and the diameter of the first connecting frame is larger than that of the pressure-bearing equipment.
As the optimization, first support section include first supporting seat, first supporting seat includes first upper support plate, first bottom suspension fagging and first supporting cylinder, first supporting cylinder is connected between first upper support plate and first bottom suspension fagging, be connected with the scissors support frame between first upper support plate and the first bottom suspension fagging, first upper support plate upper surface is equipped with the spread groove, the inside left side of spread groove and the inside right side of spread groove all are equipped with the spout, first spread groove lower part symmetry is equipped with two sliders, the slider with spout sliding connection.
As an optimization, the second preheating part comprises a second connecting frame, a supporting part, a second temperature measuring part and a second heating part, the second connecting frame is cylindrical, the second heating part is arranged in the middle of the second connecting frame, the second temperature measuring part is fixedly connected with the second heating part, two groups of accommodating grooves are symmetrically arranged on the second connecting frame on the front side and the rear side of the second heating part, the supporting part is rotatably connected with the accommodating grooves, and a second driving motor is arranged at the front end of the second connecting frame.
As optimizing, the supporting part include flexible bracing piece and range finding subassembly, flexible bracing piece one end with accomodate the inside one end of groove and rotate and connect, flexible bracing piece other end rotates and is connected with the walking wheel, flexible bracing piece is equipped with accomodate the groove junction and accomodates the motor, it is used for driving flexible bracing piece and accomodates the groove and rotate and be connected to accomodate the motor, the range finding subassembly with flexible bracing piece links firmly.
As optimization, the second driving motor front side be connected with the balancing weight, the balancing weight is used for balancing the weight of second link, the second support part set up in the second driving motor downside, the second support part includes the second supporting seat, the second supporting seat includes second upper portion backup pad, second lower part backup pad, a plurality of second support cylinder and universal wheel, second upper portion backup pad set up in second lower part backup pad upside, a plurality of the second support cylinder evenly connect in between second upper portion backup pad and the second lower part backup pad, the universal wheel connect in second lower part backup pad bottom.
As an optimization, the second temperature measuring part comprises a second infrared thermometer, the second heating part comprises a second electromagnetic heating assembly and a second telescopic rod, one end of the second telescopic rod is fixedly connected with the second connecting frame, the other end of the second telescopic rod is fixedly connected with the second electromagnetic heating assembly, the second infrared thermometer is arranged inside the second telescopic rod, and the monitoring end of the second infrared thermometer is arranged outside the second telescopic rod.
As an optimization, the telescopic support rod comprises a connecting rod and an extension rod, the connecting rod is rotatably connected with the accommodating groove, the connecting rod is telescopically connected with the extension rod, the distance measuring assembly comprises a distance sensor and a detection plate, the distance sensor is fixedly connected with one end, close to the extension rod, of the connecting rod, the detection plate is fixedly connected with the extension rod, and the detection rod is arranged opposite to the extension rod.
The beneficial effect of this scheme is: a flameless preheating device for welding of pressure-bearing equipment has the following advantages:
the external preheating device is arranged to preheat the outer side of the joint of the pressure-bearing device, the internal preheating part is arranged to preheat the inner side of the joint of the pressure-bearing device, and the joint of the pressure-bearing device is efficiently heated in an electromagnetic heating mode, so that the heating efficiency is high, and the heat loss is less;
the external preheating device preheats the joint of the pressure-bearing device through the first heating part, the temperature of the joint of the pressure-bearing device is monitored through the first temperature measuring part, and when the local temperature of the joint of the pressure-bearing device is reduced, the first heating part moves to a position with low temperature along the first connecting frame to heat, so that manual operation is not needed, and time and labor are saved;
the internal preheating part drives the second connecting frame to rotate through the second driving motor, and the second connecting frame drives the supporting component, the second temperature measuring part and the second heating part to rotate, so that the purpose of locally heating the inner side of the seam of the pressure-bearing equipment is achieved, and the heating efficiency is high.
Drawings
FIG. 1 is a schematic isometric view of the present invention.
FIG. 2 is a right-side view of the present invention.
FIG. 3 is a rear view of the present invention.
FIG. 4 is a schematic axial view of an external preheating apparatus according to the present invention.
FIG. 5 is a schematic axial view of an internal preheat section of the present invention.
FIG. 6 is a schematic axial view of a second thermometric section and a second heating section of the present invention.
Fig. 7 is a schematic view of a support member connection structure according to the present invention.
FIG. 8 is a schematic view of the present invention in use.
Wherein.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
The utility model provides a pressure-bearing equipment welding is with flameless preheating device, includes outside preheating device and inside preheating device, outside preheating device is used for preheating for pressure-bearing equipment welding department outside, inside preheating device is used for preheating for pressure-bearing equipment welding department inside, outside preheating device includes first preheating part and first support part, first support part set up in first preheating part downside, inside preheating part includes second support part and second preheating part, the second support part with second preheating part level sets up.
As shown in fig. 1, the first preheating part includes a first connecting frame 1, a first temperature measuring part and a first heating part, the first connecting frame 1 is a circular frame body, the first temperature measuring part and the first heating part are both disposed inside the first connecting frame 1, and the first connecting frame 1 is slidably connected to the first supporting part.
As shown in fig. 1, the first temperature measuring portion includes a plurality of first infrared thermometers 2, the plurality of first infrared thermometers 2 are uniformly disposed inside the first connecting frame 1, a detecting end of the first infrared thermometers 2 is disposed toward an axis of the first connecting frame 1, the first heating portion includes a connecting seat 3, a first electromagnetic heating assembly 4 and a first telescopic rod 5, the connecting seat 3 is rotatably connected to the first connecting frame 1, the first telescopic rod 5 is connected between the first electromagnetic heating assembly 4 and the connecting seat 3, and an axis direction of the first telescopic rod 5 is disposed toward an axis of the first connecting frame 1.
As shown in fig. 1, a circumferential rack is arranged on the front side of the first connecting frame 1, a first driving motor is arranged in the connecting seat 3, a driving gear is arranged on an output shaft of the first driving motor, the driving gear is meshed with the driving rack 6, and the diameter of the first connecting frame 1 is larger than that of the pressure-bearing equipment.
As shown in fig. 1, the first supporting part includes a first supporting seat, the first supporting seat includes a first upper supporting plate 7, a first lower supporting plate 8 and a first supporting cylinder 9, the first supporting cylinder 9 is connected between the first upper supporting plate 7 and the first lower supporting plate 8, a scissors supporting frame 10 is connected between the first upper supporting plate 7 and the first lower supporting plate 8, the upper surface of the first upper supporting plate 7 is provided with a connecting groove 11, the left side inside the connecting groove 11 and the right side inside the connecting groove 11 are both provided with a sliding groove 12, two sliding blocks are symmetrically arranged on the lower portion of the first connecting frame 1, and the sliding blocks are connected with the sliding groove 12 in a sliding manner.
As shown in fig. 2, the second preheating part includes a second connecting frame 13, a supporting member, a second temperature measuring part and a second heating part, the second connecting frame 13 is cylindrical, the second heating part is disposed in the middle of the second connecting frame 13, the second temperature measuring part is fixedly connected with the second heating part, two sets of accommodating grooves 14 are symmetrically disposed on the second connecting frame 13 at the front and rear sides of the second heating part, the supporting member is rotatably connected with the accommodating grooves 14, and a second driving motor 15 is disposed at the front end of the second connecting frame 13.
As shown in fig. 2, the supporting part include flexible bracing piece 16 and range finding subassembly, flexible bracing piece 16 one end with it rotates to connect to accomodate the inside one end in groove 14, flexible bracing piece 16 other end rotates and is connected with walking wheel 17, flexible bracing piece 16 is equipped with accomodate groove 14 junction and accomodates the motor, it is used for driving flexible bracing piece 16 and accomodates groove 14 and rotates and be connected to accomodate the motor, the range finding subassembly with flexible bracing piece 16 links firmly.
As shown in fig. 2, a counterweight 18 is connected to the front side of the second driving motor 15, the counterweight 18 is used for balancing the weight of the second connecting frame 13, the second supporting portion is disposed at the lower side of the second driving motor 15, the second supporting portion includes a second supporting seat, the second supporting seat includes a second upper supporting plate 19, a second lower supporting plate 20, a plurality of second supporting cylinders 21 and a universal wheel 22, the second upper supporting plate 19 is disposed at the upper side of the second lower supporting plate 20, the plurality of second supporting cylinders 21 are uniformly connected between the second upper supporting plate 19 and the second lower supporting plate 20, and the universal wheel 22 is connected to the bottom of the second lower supporting plate 20.
As shown in fig. 5 and 6, the second temperature measuring portion includes a second infrared thermometer 23, the second heating portion includes a second electromagnetic heating assembly 24 and a second telescopic rod 25, one end of the second telescopic rod 25 is fixedly connected to the second connecting frame 13, the other end of the second telescopic rod 25 is fixedly connected to the second electromagnetic heating assembly 24, the second infrared thermometer 23 is disposed inside the second telescopic rod 25, and a monitoring end of the second infrared thermometer 23 is disposed outside the second telescopic rod 25.
As shown in fig. 7, the telescopic support rod 16 includes a connecting rod 26 and an extension rod 27, the connecting rod 26 is rotatably connected to the receiving slot 14, the connecting rod 26 is telescopically connected to the extension rod 27, the distance measuring assembly includes a distance sensor 28 and a detecting plate 29, the distance sensor 28 is fixedly connected to one end of the connecting rod 26 close to the extension rod 27, the detecting plate 29 is fixedly connected to the extension rod 27, and the detecting rod is disposed opposite to the extension rod 27.
The using method comprises the following steps:
when the device is used specifically, the first supporting part is arranged below a table top for placing pressure-bearing equipment, the height of the first preheating part is adjusted through the first supporting part, and the outer side of the joint of the pressure-bearing equipment is preheated through the first preheating part;
two pieces of pressure-bearing equipment needing to be welded are supported through a conventional supporting platform;
pushing the first connecting frame 1 to the foremost end of the sliding chute 12 along two sliding chutes 12 inside the upper connecting chute 11 of the first upper supporting plate 7;
placing a seam of the pressure-bearing equipment to be welded on the inner side of the first connecting frame 1, and enabling the pressure-bearing equipment and the first connecting frame 1 to be arranged coaxially;
the outer side of the joint of the pressure-bearing equipment is subjected to temperature measurement through the first infrared thermometer 2, and the outer side of the joint of the pressure-bearing equipment is subjected to electromagnetic heating through the first electromagnetic heating assembly 4;
the first driving motor drives the connecting seat 3 to rotate along the driving rack 6, so that the first electromagnetic heating assembly 4 rotates and the outer side of the seam of the pressure-bearing equipment is uniformly heated;
when the first infrared thermometer 2 monitors that the local temperature outside the pressure-bearing equipment is reduced, the first driving motor drives the connecting seat 3 to move to a position with lower temperature outside the pressure-bearing equipment for heating so as to ensure the temperature outside the pressure-bearing equipment;
when the outer side of the pressure-bearing equipment needs to be welded, the first connecting frame 1 is pushed to move to the rear end of the connecting groove 11 along the sliding groove 12;
the second supporting part is pushed to enter the pressure-bearing equipment from one end of the pressure-bearing equipment, the storage motor drives the telescopic supporting rod 16 to pop out from the storage groove 14, the telescopic supporting rod 16 extends to the traveling wheel 17 to be in contact connection with the inner side face of the pressure-bearing equipment, the telescopic supporting rod 16 assists the second connecting frame 13 to be arranged at the axis center of the pressure-bearing equipment, the extension length of the telescopic supporting rod 16 is detected through the distance sensor 28 and the detection plate 29, the length of the second telescopic rod 25 is extended through the extension length, the second electromagnetic heating assembly 24 heats the inner side of the seam of the pressure-bearing equipment, and the temperature of the inner side of the seam of the pressure-bearing equipment is monitored through the second infrared thermometer 23;
when the second electromagnetic heating assembly 24 reaches the seam of the pressure-bearing equipment, the length of the telescopic supporting rod 16 is retracted, and the telescopic supporting rod 16 is accommodated into the accommodating groove 14 through the rotation of the accommodating motor;
when the second infrared thermometer 23 at the front end of the second electromagnetic heating assembly 24 monitors the temperature of the heating position, and when the monitored temperature exceeds the preheating temperature, the second connecting frame 13 is driven to rotate by the second driving motor 15, so that the second electromagnetic heating assembly 24 uniformly heats the inner side seam of the pressure-bearing equipment;
after welding is finished, the first connecting frame 1 is pushed to move to the front end of the connecting groove 11 along the sliding groove 12, and the seam of the pressure-bearing equipment is heated and insulated through the external preheating equipment and the internal preheating part;
after the heat preservation is finished, the second supporting part is pushed, the internal preheating part is moved out of the pressure-bearing equipment, the first connecting frame 1 is pushed to move along the sliding groove 12 to manufacture the rear end of the connecting groove 11, and the welding preheating and the heat preservation after welding are finished.
The models, types and working principles of the infrared thermometer, the distance sensor, the electromagnetic heating assembly and the like in the application are known to those skilled in the art, and are not described herein again.
The above embodiments are only specific cases of the present invention, and the protection scope of the present invention includes but is not limited to the product forms and styles of the above embodiments, and any flameless preheating device for welding of a pressure bearing device according to the claims of the present invention and any suitable changes or modifications thereof by those of ordinary skill in the art shall fall within the protection scope of the present invention.
Claims (10)
1. The utility model provides a pressure-bearing equipment welding is with flameless preheating device which characterized in that: the preheating device comprises an external preheating device and an internal preheating device, wherein the external preheating device is used for preheating the outside of a welding position of the pressure-bearing device, the internal preheating device is used for preheating the inside of the welding position of the pressure-bearing device, the external preheating device comprises a first preheating part and a first supporting part, the first supporting part is arranged on the lower side of the first preheating part, the internal preheating part comprises a second supporting part and a second preheating part, and the second supporting part and the second preheating part are horizontally arranged.
2. The flameless preheating device for welding of the pressure bearing device according to claim 1, wherein: the first preheating part comprises a first connecting frame, a first temperature measuring part and a first heating part, the first connecting frame is a circular ring-shaped frame body, the first temperature measuring part and the first heating part are arranged on the inner side of the first connecting frame, and the first connecting frame is in sliding connection with the first supporting part.
3. The flameless preheating device for welding of the pressure bearing device according to claim 2, wherein: the first temperature measuring part comprises a plurality of first infrared thermometers, the plurality of first infrared thermometers are uniformly arranged on the inner side of the first connecting frame, the detecting end of each first infrared thermometer is arranged towards the axis of the first connecting frame, each first heating part comprises a connecting seat, a first electromagnetic heating assembly and a first telescopic rod, the connecting seats are rotatably connected with the first connecting frames, the first telescopic rods are connected between the first electromagnetic heating assemblies and the connecting seats, and the axis direction of the first telescopic rods is arranged towards the axis of the first connecting frames.
4. The flameless preheating device for welding of the pressure bearing device according to claim 3, wherein: the front side of the first connecting frame is provided with a circumferential rack, a first driving motor is arranged in the connecting seat, an output shaft of the first driving motor is provided with a driving gear, the driving gear is meshed with the driving rack, and the diameter of the first connecting frame is larger than that of the pressure-bearing equipment.
5. The flameless preheating device for welding of the pressure bearing device according to claim 4, wherein: first supporting part include first supporting seat, first supporting seat includes first upper portion backup pad, first bottom suspension board and first supporting cylinder, first supporting cylinder is connected between first upper portion backup pad and first bottom suspension board, be connected with the scissors support frame between first upper portion backup pad and the first bottom suspension board, first upper portion backup pad upper surface is equipped with the spread groove, the inside left side of spread groove and the inside right side of spread groove all are equipped with the spout, first spread frame lower part symmetry is equipped with two sliders, the slider with spout sliding connection.
6. The flameless preheating device for welding of the pressure bearing device according to claim 5, wherein: the second preheating part comprises a second connecting frame, a supporting part, a second temperature measuring part and a second heating part, the second connecting frame is cylindrical, the second heating part is arranged in the middle of the second connecting frame, the second temperature measuring part is fixedly connected with the second heating part, two groups of accommodating grooves are symmetrically formed in the second connecting frame on the front side and the rear side of the second heating part, the supporting part is rotatably connected with the accommodating grooves, and a second driving motor is arranged at the front end of the second connecting frame.
7. The flameless preheating device for welding of the pressure bearing device according to claim 6, wherein: the supporting part include flexible bracing piece and range finding subassembly, flexible bracing piece one end with it rotates to be connected to accomodate inslot portion one end, flexible bracing piece other end rotates and is connected with the walking wheel, flexible bracing piece is equipped with accomodate the groove junction and accomodates the motor, it is used for driving flexible bracing piece and accomodates the groove and rotate and be connected to accomodate the motor, the range finding subassembly with flexible bracing piece links firmly.
8. The flameless preheating device for welding of the pressure bearing device according to claim 7, wherein: second driving motor front side be connected with the balancing weight, the balancing weight is used for balancing the weight of second link, the second supporting part set up in second driving motor downside, the second supporting part includes the second supporting seat, the second supporting seat includes second upper portion backup pad, second lower part backup pad, a plurality of second support cylinder and universal wheel, second upper portion backup pad set up in second lower part backup pad upside, a plurality of the second support cylinder evenly connect in between second upper portion backup pad and the second lower part backup pad, the universal wheel connect in second lower part backup pad bottom.
9. The flameless preheating device for welding of the pressure bearing device according to claim 8, wherein: the second temperature measuring part comprises a second infrared thermometer, the second heating part comprises a second electromagnetic heating assembly and a second telescopic rod, one end of the second telescopic rod is fixedly connected with the second connecting frame, the other end of the second telescopic rod is fixedly connected with the second electromagnetic heating assembly, the second infrared thermometer is arranged inside the second telescopic rod, and the monitoring end of the second infrared thermometer is arranged outside the second telescopic rod.
10. The flameless preheating device for welding of the pressure bearing device according to claim 9, wherein: the telescopic supporting rod comprises a connecting rod and an extension rod, the connecting rod is rotatably connected with the containing groove, the connecting rod is telescopically connected with the extension rod, the distance measuring assembly comprises a distance sensor and a detecting plate, the distance sensor is fixedly connected with one end, close to the extension rod, of the connecting rod, the detecting plate is fixedly connected with the extension rod, and the detecting rod is arranged opposite to the extension rod.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210000436.5A CN114378491B (en) | 2022-01-04 | 2022-01-04 | Flameless preheating equipment for welding pressure equipment |
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| CN202210000436.5A CN114378491B (en) | 2022-01-04 | 2022-01-04 | Flameless preheating equipment for welding pressure equipment |
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| CN114378491B CN114378491B (en) | 2024-04-26 |
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| CN214079897U (en) * | 2020-11-30 | 2021-08-31 | 郑州煤矿机械集团股份有限公司 | Cylinder column class work piece girth welding quick preheating device |
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2022
- 2022-01-04 CN CN202210000436.5A patent/CN114378491B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205309618U (en) * | 2015-12-21 | 2016-06-15 | 江苏通宇钢管集团有限公司 | Outside preheating device is used in pipeline welding |
| CN106041378A (en) * | 2016-08-17 | 2016-10-26 | 广东工业大学 | Preheating welding apparatus and method for marine equipment pile leg |
| CN106334888A (en) * | 2016-11-03 | 2017-01-18 | 南京奥特电气股份有限公司 | Multi-pipe diameter movable lifting type pipeline welding preheating device |
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| CN114378491B (en) | 2024-04-26 |
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