CN112536763A - Flange type connecting valve quick overhauling device and using method - Google Patents
Flange type connecting valve quick overhauling device and using method Download PDFInfo
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- CN112536763A CN112536763A CN202011140701.7A CN202011140701A CN112536763A CN 112536763 A CN112536763 A CN 112536763A CN 202011140701 A CN202011140701 A CN 202011140701A CN 112536763 A CN112536763 A CN 112536763A
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- 238000000034 method Methods 0.000 title claims description 8
- 238000012423 maintenance Methods 0.000 claims abstract description 15
- 230000000712 assembly Effects 0.000 claims abstract description 14
- 238000000429 assembly Methods 0.000 claims abstract description 14
- 238000003466 welding Methods 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 229910000831 Steel Inorganic materials 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- 230000009286 beneficial effect Effects 0.000 description 5
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 230000009191 jumping Effects 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
- B25B27/24—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same mounting or demounting valves
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Abstract
The invention relates to a flange type connecting valve quick overhauling device which comprises two groups of hoops and distance adjusting assemblies, wherein each hoop comprises a first hoop body and a second hoop body, the first hoop body and the second hoop body are connected through first bolts, and two first bolts positioned on the same group of hoops are respectively arranged on two sides of an encircling space; two sets of staple bolts pass through the roll adjustment subassembly and link to each other, and the roll adjustment subassembly includes threaded connection piece and roll adjustment screw rod, and the both ends of roll adjustment screw rod are provided with the external screw thread respectively, and the external screw thread at the both ends of roll adjustment screw rod revolves to opposite, and the threaded connection piece is provided with two, two threaded connection pieces respectively with two first hoop body fixed connection, two threaded connection pieces respectively with the external screw thread threaded connection at the both ends of roll adjustment screw rod. By adopting the device, the maintenance quality and the personnel safety of the replacement valve can be ensured, the manufacturing cost is low, the number of the components is small, the device can be repeatedly used, and the disassembly and the assembly are easy. The flange connection type valve maintenance and replacement device is suitable for maintenance and replacement of flange connection type valves in industrial enterprises.
Description
Technical Field
The invention relates to the technical field of valve connecting devices, in particular to a flange type connecting valve quick overhauling device and a using method thereof.
Background
The flange connection type valve is widely applied in industrial enterprises, the surrounding working environment is complex, and the working environment has high temperature, low temperature, oil, acid and alkali media. All the valves are connected by flanges, and the cleaning, the replacement and the like of the valves are basically involved. A flange-connected valve quick service device is required in performing these operations.
Most of valves in the existing factory are in a flange connection type, flanges are arranged at two ends of a valve body and correspond to the flanges on the pipeline, and the flanges are fixed in the pipeline through bolts. When the valve is overhauled and disassembled, the valve is usually pried by a crowbar, and the hidden danger of personal injury caused by sliding and jumping of the crowbar exists; because of the requirement of the production process, some valves are installed at high positions or on narrow sites, which is not beneficial to maintenance operation.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the flange type connecting valve quick overhauling device is provided to solve one or more technical problems in the prior art and at least provide a beneficial choice or creation condition.
The solution of the invention for solving the technical problem is as follows:
a flange type connecting valve quick overhauling device comprises two groups of hoops and a distance adjusting assembly, wherein each hoop comprises a first hoop body and a second hoop body, the first hoop body and the second hoop body form an encircling space for tightly encircling a pipeline, the first hoop body and the second hoop body are connected through first bolts, two first bolts are arranged on the same group of hoops, and the two first bolts on the same group of hoops are respectively arranged on two sides of the encircling space; two sets of the staple bolt links to each other through the roll adjustment subassembly, the roll adjustment subassembly includes threaded connection piece and roll adjustment screw rod, the both ends of roll adjustment screw rod are provided with the external screw thread respectively, the external screw thread at the both ends of roll adjustment screw rod revolves to opposite, the threaded connection piece is provided with two, two the threaded connection piece respectively with two first hoop body fixed connection, two the threaded connection piece respectively with the external screw thread threaded connection at the both ends of roll adjustment screw rod.
In one embodiment, the threaded connection block and the first hoop body are fixed by welding.
In one embodiment, the threaded connection block is provided as a hexagonal nut.
In one embodiment, the distance adjusting assembly further comprises a rotating block, the rotating block is fixedly connected to the distance adjusting screw rod, the distance from the rotating block to the axis of the distance adjusting screw rod is greater than the maximum outer diameter of the distance adjusting screw rod, and the rotating block is provided with at least two rotating abutting surfaces.
In one embodiment, the rotating block is provided with six rotating abutting surfaces, and the six rotating abutting surfaces are surrounded to form a regular hexahedral cylinder structure.
In one embodiment, the turning block is a hexagonal nut.
In one embodiment, the rotary block and the distance adjusting screw rod are fixed through welding.
In one embodiment, two sections of external threads with the same extension direction of the two distance adjusting screws of the two distance adjusting assemblies have the same rotation direction.
In one embodiment, the rotary block is arranged in the middle of the distance adjusting screw rod.
A use method of a flange type connecting valve quick overhauling device is based on any one of the flange type connecting valve quick overhauling devices, and comprises the following steps:
the method comprises the following steps that a first hoop body and a second hoop body are close to two pipelines to be installed, two groups of hoops are installed on the two pipelines respectively, and the pipelines are placed in an encircling space formed by the first hoop body and the second hoop body;
fixing the first hoop body and the second hoop body through the first bolt;
when the two pipelines need to be close to each other, the rotating block is rotated through the wrench to enable the two groups of hoops to be close to each other, so that the two pipelines are driven to be close to each other;
when the two pipelines are separated from each other, the rotating block is rotated through the wrench to enable the two groups of the hoops to be away from each other, so that the two pipelines are driven to be away from each other, and the valve is separated from the pipelines.
The invention has the beneficial effects that: when overhauing the valve, dismantle the screw of valve both ends flange earlier, fix the two sets of staple bolts of this device respectively on the pipeline at valve both ends through first bolt, the distance adjusting screw rod of rotating as required can strut the pipeline at valve both ends fast, safely, can be very light this moment take out old valve to after changing new valve right position, the pipeline is tightened up to the distance adjusting screw rod of rotating, it can to adorn flange screw wrench. The flange connection type valve quick maintenance device also has the function of positioning pipelines at two ends of the valve, improves the working efficiency of workers and reduces the labor intensity of the workers. By adopting the device, the maintenance quality and the personnel safety of the replacement valve can be ensured, the manufacturing cost is low, the number of the components is small, the device can be repeatedly used, and the disassembly and the assembly are easy. The flange connection type valve maintenance and replacement device is suitable for maintenance and replacement of flange connection type valves in industrial enterprises.
Drawings
In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures are only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from them without inventive effort.
FIG. 1 is a schematic view of the overall structure of an embodiment of the present invention viewed from the front in a first direction;
FIG. 2 is a schematic view of the overall structure of the embodiment of the present invention viewed from the front in the second direction;
fig. 3 is a schematic overall structure view obtained by the third angle front view according to the embodiment of the present invention.
In the figure, 100, the hoop; 110. a first hoop body; 120. a second band body; 130. a first bolt; 200. a distance adjusting component; 210. a threaded connection block; 220. adjusting the pitch of the screw rod; 230. and (6) rotating the block.
Detailed Description
The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention. In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, all the coupling/connection relationships mentioned herein do not mean that the components are directly connected, but mean that a better coupling structure can be formed by adding or reducing coupling accessories according to specific implementation conditions. All technical characteristics in the invention can be interactively combined on the premise of not conflicting with each other.
The flange connection type valve is widely applied in industrial enterprises, the surrounding working environment is complex, and the working environment has high temperature, low temperature, oil, acid and alkali media. All the valves are connected by flanges, and the cleaning, the replacement and the like of the valves are basically involved. A flange-connected valve quick service device is required in performing these operations.
Most of valves in the existing factory are in a flange connection type, flanges are arranged at two ends of a valve body and correspond to the flanges on the pipeline, and the flanges are fixed in the pipeline through bolts. When the valve is overhauled and disassembled, the valve is usually pried by a crowbar, and the hidden danger of personal injury caused by sliding and jumping of the crowbar exists; because of the requirement of the production process, some valves are installed at high positions or on narrow sites, which is not beneficial to maintenance operation.
Referring to fig. 1 to 3, a flange type connecting valve quick maintenance device includes: the pipe fitting comprises two groups of hoops 100 and distance adjusting assemblies 200, wherein each hoop 100 comprises a first hoop body 110 and a second hoop body 120, the first hoop body 110 and the second hoop body 120 form an encircling space for encircling a pipe tightly, the first hoop body 110 and the second hoop body 120 are connected through first bolts 130, two first bolts 130 are arranged on the same group of hoops 10, and the two first bolts 130 on the same group of hoops 100 are respectively arranged on two sides of the encircling space; two sets of staple bolt 100 links to each other through the roll adjustment subassembly, roll adjustment subassembly 200 includes threaded connection piece 210 and roll adjustment screw rod 220, the both ends of roll adjustment screw rod 220 are provided with the external screw thread respectively, the external screw thread at the both ends of roll adjustment screw rod 220 is turned round to opposite, threaded connection piece 210 is provided with two, two threaded connection piece 210 respectively with two first hoop body 110 fixed connection, two threaded connection piece 210 respectively with the external screw thread threaded connection at the both ends of roll adjustment screw rod 220.
In the embodiment of the present invention, the threaded connection block 210 is fixed to the first hoop body 110 by welding; the first hoop body 110 and the threaded connecting block 210 are fixed by welding, so that the operation is simple, convenient and quick.
In the embodiment of the present invention, the threaded connection block 210 is configured as a hexagon screw; the hexagonal nut is convenient and quick to draw materials, the processing raw materials are simple, the hexagonal nut is easy to obtain, and the hexagonal nut rapid feeding device is suitable for rapid production.
In the embodiment of the present invention, the distance adjusting assembly 200 further includes a rotating block 230, the rotating block 230 is fixedly connected to the distance adjusting screw 220, a distance from the rotating block 230 to an axis of the distance adjusting screw 220 is greater than a maximum outer diameter of the distance adjusting screw 220, and the rotating block 230 is provided with at least two rotating abutting surfaces; when adjusting the distance of two staple bolts 100, accessible spanner is rotatory revolves piece 230 to adjust the distance of two staple bolts 100, revolve piece 230 and make the spanner drive adjusting screw rotate time more laborsaving.
In the embodiment of the present invention, the rotating block 230 is provided with six rotating abutting surfaces, and the six rotating abutting surfaces are surrounded to form a regular hexahedral cylinder structure; the six rotating abutting surfaces enable the wrench to rotate the distance-adjusting screw rod at a plurality of angles.
In the embodiment of the present invention, the rotary block 230 is a hexagon nut; the hexagonal nut is convenient and quick to draw materials, the processing raw materials are simple, the hexagonal nut is easy to obtain, and the hexagonal nut rapid feeding device is suitable for rapid production.
In the embodiment of the present invention, the rotary block 230 and the distance adjusting screw 220 are fixed by welding; the rotary block 230 and the distance adjusting screw rod 220 are fixed by welding, so that the operation is simple, convenient and quick.
In the embodiment of the present invention, two external threads of the two distance adjusting screws 220 of the two distance adjusting assemblies 200, which have the same extending direction, have the same rotating direction; the two sections of external threads of the two distance adjusting screws of the two distance adjusting assemblies 200, which have the same extending direction, have the same rotating direction, so that the two distance adjusting assemblies have the same operating logic.
In the embodiment of the present invention, the rotary block 230 is disposed in the middle of the distance adjusting screw 220; the rotary block 230 is arranged in the middle of the rotary block, so that the stress at two ends of the distance adjusting screw rod 220 is uniform, and the phenomenon that the service life of the device is shortened seriously due to the fact that one end of the distance adjusting screw rod 220 close to the rotary block 230 is abraded due to the fact that the stress at two ends of the distance adjusting screw rod 220 is nonuniform is avoided.
Referring to fig. 1 to 3, the hoop 100 includes a first hoop body 110 and a second hoop body 120, and the first hoop body 110 and the second hoop body 120 form an encircling space for embracing a pipe connected with a flange type connection valve. In this embodiment, the first hoop body 110 and the second hoop body 120 are made by bending flat steel, and each of the first hoop body and the second hoop body has two connecting sections and an encircling section, the two connecting sections are respectively disposed at two ends of the encircling section, and the encircling section is a semicircular bent flat steel. Specifically, in this embodiment, the width of the flat steel is set to be 40mm, the inner diameters of the surrounding section of the first hoop 100 and the surrounding section of the second hoop 100 are the same, and the surrounding section of the first hoop 100 and the surrounding section of the second hoop 100 are both disposed in the middle of each other.
Referring to fig. 1 to 3, the first hoop body 110 and the second hoop body 120 are connected by first bolts 130, two first bolts 130 located in the same group of hoops 100 are provided, and the two first bolts 130 located in the same group of hoops 100 are respectively provided at two sides of the encircling space to connect the connection section of the first hoop body 110 and the connection section of the second hoop body 120. Specifically, in the present embodiment, the first hoop body 110 and the second hoop body 120 are connected by M10 bolts and corresponding nuts.
Referring to fig. 1 to 3, the two groups of hoops 100 are connected through the distance adjusting assemblies 200, two groups of distance adjusting assemblies 200 are provided, and the two groups of distance adjusting assemblies 200 are respectively disposed at two sides of the encircling section. The distance adjustment assembly 200 includes a threaded connection block 210, a distance adjustment screw 220, and a rotation block 230. The two ends of the distance adjusting screw rod 220 are respectively provided with external threads, and the external threads at the two ends of the distance adjusting screw rod 220 are opposite in rotation direction. The two external threads with the same extension direction of the two distance adjusting screws 220 of the two distance adjusting assemblies 200 have the same rotation direction, and the two external threads with the same extension direction of the two distance adjusting screws 220 of the two distance adjusting assemblies 200 have the same rotation direction, so that the two distance adjusting assemblies 200 have the same operation logic.
Referring to fig. 1 to 3, the threaded connection block 210 is provided with two, and two threaded connection blocks 210 are respectively and fixedly connected with two first hoop bodies 110, specifically, in this embodiment, in order to facilitate material drawing and processing production, the threaded connection block 210 is provided with a hexagon nut, and the threaded connection block 210 is fixed with the first hoop body 110 by welding.
Referring to fig. 1 to 3, two threaded connection blocks 210 are respectively threadedly connected to external threads at both ends of an adjusting screw 220. The rotary block 230 is fixedly connected to the middle of the pitch adjusting screw 220, in the present embodiment, the rotary block 230 is an M22 nut, and is fixedly connected to the pitch adjusting screw 220 by welding, in other embodiments, a regular multi-faceted cylinder with a hole at the center may be used instead of the nut as the rotary block 230, and may be fixed to the pitch adjusting screw 220 by welding or may be integrally formed with the pitch adjusting screw 220.
The use method of the flange type connecting valve quick overhauling device comprises the following steps:
the first hoop body 110 and the second hoop body 120 are close to two pipelines to be installed, two groups of the hoops 100 are respectively installed on the two pipelines, and the pipelines are placed in the surrounding space formed by the first hoop body 110 and the second hoop body 120;
fixing the first hoop body 110 and the second hoop body 120 by the first bolt 130;
when two pipelines need to be close to each other, the rotating block 230 is rotated by a wrench to enable the two groups of hoops 100 to be close to each other, so that the two pipelines are driven to be close to each other;
when the two pipelines are separated from each other, the rotating block 230 is rotated by a wrench to make the two sets of the hoops 100 be away from each other, so as to drive the two pipelines to be away from each other, and further to separate the valve from the pipelines.
The technical scheme of the embodiment is manufactured by the following steps: referring to fig. 1 to 3, M20 bolts, 40mm flat steel, M22 adjusting nuts, and M10 bolts were prepared. Bending 4 flat steels with the length and the width of 40mm into semicircles with the same size in the middle according to a structural schematic diagram, respectively drilling a hole in the centers of two ends equidistant from the middle of the flat steels by using a phi 12mm drill bit, wherein the two ends of each of the two flat steels are respectively welded with a nut M20, the two ends of one flat steel are respectively welded with a nut M20 with left rotation, and the two ends of the other flat steel are respectively welded with a nut M20mm with right rotation; and an M22 nut is sleeved and welded in the middle of each of the two sets of bolts.
This embodiment is in concrete application, when overhauing the valve, dismantle the screw of valve both ends flange earlier, fix this device on the pipeline at valve both ends through M10 bolt, turn round the M22 nut in the middle of the bolt in step as required and can strut the pipeline at valve both ends fast, safely, can very easily take out old valve this moment to change new valve to the good position back, turn round M22 nut in step and tighten up the pipeline, it can to adorn the flange screw wrench. The flange connection type valve quick maintenance device also has the function of positioning pipelines at two ends of the valve, improves the working efficiency of workers and reduces the labor intensity of the workers.
The invention has the beneficial effects that: by adopting the device, the maintenance quality and the personnel safety of the replacement valve can be ensured, the manufacturing cost is low, the number of the components is small, the device can be repeatedly used, and the disassembly and the assembly are easy. The flange connection type valve maintenance and replacement device is suitable for maintenance and replacement of flange connection type valves in industrial enterprises.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (11)
1. The utility model provides a device is swiftly overhauld to flange formula connecting valve which characterized in that: the pipe clamp comprises two groups of hoop (100) and distance adjusting assemblies (200), wherein the hoop (100) comprises a first hoop body (110) and a second hoop body (120), the first hoop body (110) and the second hoop body (120) form an encircling space for holding a pipeline tightly, and the first hoop body (110) and the second hoop body (120) are connected through a first bolt (130); two sets of staple bolt (100) link to each other through roll adjustment subassembly (200), roll adjustment subassembly (200) include threaded connection piece (210) and roll adjustment screw rod (220), threaded connection piece (210) are provided with two, two threaded connection piece (210) respectively with two first hoop body (110) fixed connection, two threaded connection piece (210) respectively with the external screw thread threaded connection at the both ends of roll adjustment screw rod (220).
2. The quick flange type connecting valve overhauling device of claim 1, which is characterized in that: the number of the first bolts (130) located on the same group of the hoop (100) is two, and the first bolts (130) are respectively arranged on two sides of the encircling space.
3. The quick flange type connecting valve overhauling device of claim 1, which is characterized in that: the threaded connecting block (210) and the first hoop body (110) are fixed through welding.
4. The quick flange type connecting valve overhauling device of claim 1, which is characterized in that: the threaded connecting block (210) is set to be a hexagonal nut.
5. The quick flange type connecting valve overhauling device of claim 1, which is characterized in that: the distance adjusting assembly (200) further comprises a rotating block (230), the rotating block (230) is fixedly connected to the distance adjusting screw rod (220), the distance from the rotating block (230) to the axis of the distance adjusting screw rod (220) is larger than the maximum outer diameter of the distance adjusting screw rod (220), and the rotating block (230) is provided with at least two rotating abutting surfaces.
6. The quick flange type connecting valve overhauling device of claim 5, wherein: the rotating block (230) is provided with six rotating abutting surfaces, and the six rotating abutting surfaces are surrounded to form a regular hexahedral cylinder structure.
7. The quick flange connecting valve overhauling device of claim 6, wherein: the rotary block (230) is a hexagonal nut.
8. The quick flange type connecting valve overhauling device of claim 5, wherein: the rotary block (230) and the distance adjusting screw rod (220) are fixed through welding.
9. The quick flange type connecting valve overhauling device of claim 1, which is characterized in that: two sections of external threads with the same extension direction of two distance adjusting screws (220) of the two distance adjusting assemblies (200) have the same rotating direction.
10. The quick flange type connecting valve overhauling device of claim 1, which is characterized in that: the rotary block (230) is arranged in the middle of the distance adjusting screw rod (220).
11. The use method of the flange type connecting valve quick overhauling device is characterized in that: the flange type connecting valve quick-service maintenance device based on any one of claims 1 to 10 comprises the following steps:
the method comprises the following steps that a first hoop body (110) and a second hoop body (120) are close to two pipelines to be installed, two groups of hoops (100) are installed on the two pipelines respectively, and the pipelines are placed in an encircling space formed by the first hoop body (110) and the second hoop body (120); fixing the first hoop body (110) and the second hoop body (120) by the first bolt (130);
when the two pipelines need to be close to each other, the rotating block (230) is rotated by a wrench to enable the two groups of hoops (100) to be close to each other, so that the two pipelines are driven to be close to each other;
when the two pipelines are separated from each other, the rotating block (230) is rotated by a wrench to enable the two groups of hoops (100) to be away from each other, so that the two pipelines are driven to be away from each other, and the valve is separated from the pipelines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011140701.7A CN112536763A (en) | 2020-10-22 | 2020-10-22 | Flange type connecting valve quick overhauling device and using method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011140701.7A CN112536763A (en) | 2020-10-22 | 2020-10-22 | Flange type connecting valve quick overhauling device and using method |
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| Publication Number | Publication Date |
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| CN112536763A true CN112536763A (en) | 2021-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011140701.7A Pending CN112536763A (en) | 2020-10-22 | 2020-10-22 | Flange type connecting valve quick overhauling device and using method |
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| CN (1) | CN112536763A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204962108U (en) * | 2015-09-25 | 2016-01-13 | 金川集团股份有限公司 | Device in adjustment pipeline flange clearance |
| CN206419610U (en) * | 2016-12-30 | 2017-08-18 | 国家电网公司 | A kind of Repair of Transformer oil-flow control apparatus |
| CN109787131A (en) * | 2018-12-19 | 2019-05-21 | 国网江苏省电力有限公司常州供电分公司 | Folding-jib disconnecting switch overhauls special tooling platform |
| CN209963639U (en) * | 2019-06-27 | 2020-01-17 | 中国南方电网有限责任公司超高压输电公司昆明局 | Transmission line staple bolt coaster |
| CN211449876U (en) * | 2019-09-26 | 2020-09-08 | 曾建刚 | Staple bolt for natural gas line |
-
2020
- 2020-10-22 CN CN202011140701.7A patent/CN112536763A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204962108U (en) * | 2015-09-25 | 2016-01-13 | 金川集团股份有限公司 | Device in adjustment pipeline flange clearance |
| CN206419610U (en) * | 2016-12-30 | 2017-08-18 | 国家电网公司 | A kind of Repair of Transformer oil-flow control apparatus |
| CN109787131A (en) * | 2018-12-19 | 2019-05-21 | 国网江苏省电力有限公司常州供电分公司 | Folding-jib disconnecting switch overhauls special tooling platform |
| CN209963639U (en) * | 2019-06-27 | 2020-01-17 | 中国南方电网有限责任公司超高压输电公司昆明局 | Transmission line staple bolt coaster |
| CN211449876U (en) * | 2019-09-26 | 2020-09-08 | 曾建刚 | Staple bolt for natural gas line |
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