阅读说明：本技术 用于gil筒体圆度检验的装置 (Device for checking roundness of GIL cylinder ) 是由 杨涛 陈晓鸣 齐福利 宋轲 刘成 彭光耀 彭佳杰 储玮 狄艳 葛时帆 曹杰 任 于 2020-12-28 设计创作，主要内容包括：本发明属于电力行业GIL技术领域,为了解决现有技术中缺少对GIL筒体圆度进行有效检验的技术问题,本发明提供一种用于GIL筒体圆度检验的装置,包括：圆度度量滑块,圆度度量滑块的截面与GIL筒体的截面相似,圆度度量滑块的截面的圆度与GIL筒体圆度要求相对应；与圆度度量滑块连接的轴向牵引动力施加部,轴向牵引动力施加部被施加预定的轴向牵引力；圆度度量滑块在GIL筒体轴向方向上被轴向牵引动力施加部带动,沿着GIL筒体的轴向移动；根据圆度度量滑块是否能够沿着GIL筒体的轴向顺畅的移动,确定GIL筒体圆度是否满足要求。因此,通过该GIL筒体圆度测量专用装置,能够准确、快速地完成GIL筒体圆度测量。(The invention belongs to the technical field of GIL in the power industry, and provides a device for checking the roundness of a GIL cylinder, aiming at solving the technical problem that the roundness of the GIL cylinder is not effectively checked in the prior art, which comprises the following components: the section of the roundness measuring sliding block is similar to that of the GIL cylinder, and the roundness of the section of the roundness measuring sliding block corresponds to the roundness requirement of the GIL cylinder; an axial traction power applying part connected with the roundness measuring slider, wherein a predetermined axial traction force is applied to the axial traction power applying part; the roundness measurement sliding block is driven by the axial traction power applying part in the axial direction of the GIL cylinder body and moves along the axial direction of the GIL cylinder body; and determining whether the roundness of the GIL cylinder body meets the requirement according to whether the roundness measuring slide block can move smoothly along the axial direction of the GIL cylinder body. Therefore, the device special for measuring the roundness of the GIL cylinder can accurately and quickly measure the roundness of the GIL cylinder.)

1. A device for GIL cylinder roundness testing, comprising:

a roundness measurement slider, a side surface of which is opposite to the surface of the GIL extending in the axial direction, and a cross section of which is similar to a cross section of the GIL cylinder, the roundness of the cross section of which corresponds to the requirement of roundness of the GIL cylinder;

an axial traction power applying portion connected to the roundness measuring slider, the axial traction power applying portion being applied with a predetermined axial traction force; the roundness measurement sliding block is driven by the axial traction power applying part in the axial direction of the GIL cylinder body and moves along the axial direction of the GIL cylinder body;

and determining whether the roundness of the GIL cylinder body meets the requirement according to whether the roundness measuring slide block can move smoothly along the axial direction of the GIL cylinder body.

2. The apparatus of claim 1, wherein the roundness measurement block comprises a first circular spacer, a second circular spacer, and a connecting rod connecting the first circular spacer and the second circular spacer.

3. The device of claim 2, wherein the first circular partition and the second circular partition are respectively provided with a groove and a connecting hole connected with the connecting rod.

4. The apparatus of claim 1, further comprising a hanging ring located outside the roundness measuring slide, the hanging ring being connected to the external traction force applying portion.

5. The apparatus of claim 4, wherein the external traction force applying part is a powered trolley, and the suspension ring is connected to the powered trolley by a traction rope.

6. The apparatus of claim 5, wherein the roundness measurement slide opposes the GIL cylinder inner surface; sequentially placing the power trolley and a traction rope between the power trolley and the roundness measuring slide block into the GIL from one end of the GIL cylinder body, and controlling the power trolley to move from one end of the GIL cylinder body to the other end of the GIL cylinder body; manually pulling the traction rope to pull the roundness measurement sliding block out of the other end of the GIL cylinder body; and when the roundness measurement sliding block can smoothly move from one end of the GIL cylinder to the other end of the GIL cylinder, determining that the roundness of the GIL cylinder meets the requirement.

7. The apparatus of claim 4, wherein the suspension rings are attached to both outer sides of the roundness measuring slider.

8. The device as claimed in claim 7, wherein a lifting rope is connected to the lifting rings at both sides.

9. The apparatus of any one of claims 4 to 8, wherein the suspension ring is mounted at the center of the side of the roundness measuring block.

10. The apparatus of claim 1, wherein the roundness measurement slider has a cross-section corresponding to a maximum radius of R1, and the GIL cylinder has a radius of R2; 0.95R2 is not less than R1 is not less than R2.

Technical Field

The invention relates to the technical field of GIL in the power industry, in particular to a device for inspecting the roundness of a GIL cylinder.

Background

GIL is short for gas insulated metal closed transmission line, and mainly comprises an aluminum alloy shell, an aluminum alloy conductor, SF6 insulating gas and an epoxy support; the GIL system can normally run at full load and is obviously higher than the current carrying capacity of a cable, so the GIL has obvious advantages in the aspect of current carrying capacity, for example, the Su (Suzhou) -Tong (Nantong) GIL comprehensive pipe gallery project with the highest voltage grade, the largest transmission capacity and the longest monomer GIL in the world is put into operation formally, the Huadong extra-high voltage alternating current looped network is opened, and the method is another important technical innovation in the field of extra-high voltage transmission.

Currently, after the GIL raw material is delivered, an inspector generally performs sampling and roundness checking on a GIL cylinder, and a method for checking the roundness of the cylinder generally determines whether the cylinder is out of round by subtracting the minimum outer diameter from the maximum outer diameter of the cylinder and dividing the minimum outer diameter by 2 to obtain the inner diameter of the cylinder. However, the measurement calculation method is prone to errors, and data are inaccurate.

Disclosure of Invention

In order to solve the technical problem that the roundness of the GIL cylinder body is not effectively checked in the prior art, the invention provides the device for checking the roundness of the GIL cylinder body, which can accurately and quickly finish the roundness measurement of the GIL cylinder body.

The invention provides a device for checking the roundness of a GIL cylinder, which is characterized by comprising the following components:

a roundness measurement slider, a side surface of which is opposite to the surface of the GIL extending in the axial direction, and a cross section of which is similar to a cross section of the GIL cylinder, the roundness of the cross section of which corresponds to the requirement of roundness of the GIL cylinder;

an axial traction power applying portion connected to the roundness measuring slider, the axial traction power applying portion being applied with a predetermined axial traction force; the roundness measurement sliding block is driven by the axial traction power applying part in the axial direction of the GIL cylinder body and moves along the axial direction of the GIL cylinder body;

and determining whether the roundness of the GIL cylinder body meets the requirement according to whether the roundness measuring slide block can move smoothly along the axial direction of the GIL cylinder body.

In a preferred embodiment of the present invention, the roundness measurement sliding block includes a first circular partition plate, a second circular partition plate, and a connecting rod connecting the first circular partition plate and the second circular partition plate.

In a preferred embodiment of further embodiment of the present invention, the first circular partition board and the second circular partition board are respectively provided with a groove and a connecting hole connected with the connecting rod.

In a preferred embodiment of the present invention, the device further includes a hanging ring located outside the roundness measuring slider, and the hanging ring is connected to the external traction force applying portion.

In a further preferred embodiment of the present invention, the external traction force applying part is a power trolley, and the connection mode between the suspension ring and the power trolley is a connection mode through a traction rope.

In a further preferred implementation manner of the embodiment of the present invention, the roundness measurement sliding block is opposite to the inner surface of the GIL cylinder; sequentially placing the power trolley and a traction rope between the power trolley and the roundness measuring slide block into the GIL from one end of the GIL cylinder body, and controlling the power trolley to move from one end of the GIL cylinder body to the other end of the GIL cylinder body; manually pulling the traction rope to pull the roundness measurement sliding block out of the other end of the GIL cylinder body; and when the roundness measurement sliding block can smoothly move from one end of the GIL cylinder to the other end of the GIL cylinder, determining that the roundness of the GIL cylinder meets the requirement.

In a further preferred embodiment of the present invention, the two outer sides of the roundness measuring slider are respectively connected to the suspension rings.

In a further preferred embodiment of the present invention, the hanging rings on both sides are respectively connected with a hanging rope.

In a further preferred embodiment of the present invention, the hanging ring is mounted at the center of the side surface of the roundness measuring slider.

In a preferred implementation manner of the embodiment of the present invention, the maximum radius corresponding to the cross section of the roundness measuring slider is R1, and the radius of the GIL cylinder is R2; 0.95R2 is not less than R1 is not less than R2.

The device for inspecting the roundness of the GIL cylinder body can accurately and quickly finish the roundness measurement of the GIL cylinder body; the device for inspecting the roundness of the GIL cylinder body detects the qualified GIL cylinder body, can ensure that relevant parts can be effectively butted when a GIL bus is assembled in a post process, has no phenomenon of being stuck in the cylinder body, and avoids the roundness of the GIL cylinder body from becoming a resistance point of the whole engineering installation progress.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure and/or process particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

Fig. 1 is a schematic structural diagram of a device for checking the roundness of a GIL cylinder according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of the GIL cylinder body and a device for checking the roundness of the GIL cylinder body according to the embodiment of the present invention.

Detailed Description

The following detailed description of the embodiments of the present invention will be provided with reference to the drawings and examples, so that how to apply the technical means to solve the technical problems and achieve the technical effects can be fully understood and implemented. It should be noted that the detailed description is only for the purpose of making the invention easier and clearer for those skilled in the art, and is not intended to be a limiting explanation of the invention; moreover, as long as there is no conflict, the embodiments and the features of the embodiments of the present invention may be combined with each other, and the technical solutions formed are all within the scope of the present invention.

Currently, after the GIL raw material is delivered, an inspector generally performs sampling and roundness checking on a GIL cylinder, and a method for checking the roundness of the cylinder generally determines whether the cylinder is out of round by subtracting the minimum outer diameter from the maximum outer diameter of the cylinder and dividing the minimum outer diameter by 2 to obtain the inner diameter of the cylinder. However, the following measurement methods exist:

1. when measuring GIL cylinders, measurement errors are prone to occur if the measurements are made manually by an inspector with a simple roundness measurement tool.

2. The size of the whole GIL cylinder is long, and if only a few random spot checks are carried out for measurement, key important parts are easily missed.

3. The measurement tool itself has errors.

To this end, the present application provides a device for gir cylinder roundness testing, the device comprising:

and the side surface of the roundness measuring slide block is opposite to the surface extending in the axial direction of the GIL, the section of the roundness measuring slide block is similar to that of the GIL cylinder, and the roundness of the section of the roundness measuring slide block corresponds to the roundness requirement of the GIL cylinder.

The roundness measuring slide block is designed according to the size of the GIL cylinder, for example, if the GIL cylinder is a cylinder, the roundness measuring slide block is designed according to the shape of the cylinder, for example, a circular disc with a circular outer surface is designed, so that whether the circular disc is installed in the GIL to smoothly pass through a position needing to be measured can be judged, and if so, the roundness of the GIL cylinder meets the requirement; if not, the roundness of the GIL cylinder body is not satisfied. The location to be measured may be the entire GIL cylinder, e.g. moving from one end of the GIL cylinder to the other; but not limited thereto, the specific requirements may be determined in combination with the design requirements of the GIL cartridge. For another example, the inner surface of the GIL cylinder is designed into a circular ring, the circular ring is arranged on the outer side wall of the GIL, and based on whether the circular ring can pass through a position needing to be measured in the field or not, if yes, the roundness of the GIL cylinder can meet the requirement; if not, the roundness of the GIL cylinder body is not satisfied.

If the GIL cylinder is a triplet, the roundness measuring slider can be correspondingly formed by connecting three circular arcs, such as a disc formed by connecting three circular arcs or a ring formed by connecting three circular arcs. More GIL cylinders of different sizes can also be designed with similar requirements.

The device for gir cylinder roundness testing further comprises: an axial traction power applying part connected with the roundness measuring slider, wherein a predetermined axial traction force is applied to the axial traction power applying part; the roundness measurement sliding block is driven by the axial traction power applying part in the axial direction of the GIL cylinder body and moves along the axial direction of the GIL cylinder body;

and determining whether the roundness of the GIL cylinder body meets the requirement according to whether the roundness measuring slide block can move smoothly along the axial direction of the GIL cylinder body.

The traction power applying part can be a power trolley, but is not limited to the power trolley, and can be directly provided by manpower and traction ropes, or directly provided by a motor arranged on the roundness measuring slide block.

Therefore, the roundness measurement of the GIL cylinder can be accurately and quickly completed through the device for inspecting the roundness of the GIL cylinder; the device for inspecting the roundness of the GIL cylinder body detects the qualified GIL cylinder body, can ensure that relevant parts can be effectively butted when a GIL bus is assembled in a post process, has no phenomenon of being stuck in the cylinder body, and avoids the roundness of the GIL cylinder body from becoming a resistance point of the whole engineering installation progress.

The technical scheme of the invention is described in detail by the figures and the specific embodiments as follows:

example one

As shown in fig. 1 and 2, the roundness measurement block 100 provided in this embodiment includes a first circular partition 110, a second circular partition 120, and a connection rod 140 connecting the first circular partition 110 and the second circular partition 120. The number of the connecting rods 140 is 1 or more, which may be determined according to actual project requirements, and the embodiment does not specifically limit the same. In order to reduce the weight of the roundness measuring block 100 and save traction, nylon plates are used for the first circular partition 110 and the second circular partition 120, respectively. In order to further reduce the weight of the roundness measuring block 100, the first circular partition 110 and the second circular partition 120 are respectively provided with a groove 102. The first circular partition 110 and the second circular partition 120 are further provided with coupling holes (not shown) for coupling with the coupling rods 140, respectively.

As shown in fig. 1, in a preferred embodiment of the present embodiment, the device for checking the roundness of the GIL cylinder further includes a hanging ring 130 located outside the roundness measuring slider, and the hanging ring 130 is connected to an external traction force applying part.

As shown in fig. 2, the external traction force applying part is a power trolley, and the hanging ring 130 is connected with the power trolley through a traction rope. The power dolly can adopt the power dolly that the electric power industry is commonly used can, can also adopt equipment such as unmanned aerial vehicle that can provide the tractor.

In a further preferred embodiment of this embodiment, two outer sides of the roundness measuring slider 100 are respectively connected to a suspension ring 130. The hanging rings 130 on both sides of the roundness measuring slider 100 are connected with hanging ropes, respectively. And a suspension ring 130 is installed at the center of the side of the roundness measuring block. Therefore, the structures of the two ends of the roundness measuring slide block 100 are consistent and have no positive and negative difference, and the fool-proof performance is facilitated in the using process.

Specifically, the roundness measurement sliding block 100 is composed of 2 nylon plates, 6 connecting rods, 4 aluminum gaskets and 2 lifting ring nuts; the assembly process is as follows:

1. sequentially placing 2M 16 nuts and 2 aluminum gaskets on a screw rod M16 x 300, wherein two ends of the screw rod are symmetrical;

2. respectively connecting 2 nylon plates with a screw in a threaded manner, screwing the nylon plates into threaded holes of phi 12.5 of the nylon plates in sequence after screwing the nylon plates for a certain distance, and locking the nylon plates by using inner hexagonal bolts M12 x 40;

3. respectively installing 2 aluminum gaskets, 2M 16 nuts and 2M 16 lifting ring nuts on the outer sides of the nylon plates at two ends;

4. 2 traction ropes with the same length are tied on lifting ring nuts at two ends respectively (the length is usually more than 12m), and the binding needs to be firm.

Therefore, the roundness measuring slider 100 according to the present embodiment includes: the nylon plate, the connecting rod, the aluminum gasket and the lifting ring nut are consistent in structure at two ends.

The roundness measurement sliding block 100 is integrally assembled, does not have a welding process and is convenient to use.

And the roundness measurement sliding block 100 can be changed according to the concrete specification of the GIL bus, and can be used for three-phase common boxes and various types of single phases. The center of the roundness measurement sliding block 100 is provided with an M16 screw for connecting lifting ring nuts at two ends, so that the whole tool is stressed and fixed.

It should be noted that, when the roundness measurement slider 100 is used, burrs, convex edges and depressions cannot exist on the outer circle; in addition, in order to reduce the weight of the tool, the inner part of the tool is provided with a fabrication hole, so that the tool is flexible and mobile in operation, and the structure of the tool is not influenced. The roundness measurement sliding block 100 can reduce the risk of roundness out-of-round of the GIL cylinder, and essentially detects the out-of-round condition of the inner circle of the GIL cylinder to judge whether raw materials are available.

As shown in fig. 2, the roundness measuring block 100 is opposite to the inner surface of the GIL cylinder 400, and the power trolley 300 and the traction rope 210 positioned between the power trolley 300 and the roundness measuring block 100 are sequentially placed into the GIL from one end of the GIL cylinder 400, and the power trolley 300 is controlled to move from one end of the GIL cylinder 400 to the other end of the GIL cylinder 400; then the pulling rope 210 is pulled manually, and the roundness measuring slide block 100 is pulled out from the other end of the GIL cylinder 400; when the roundness measurement block 100 can move from one end of the GIL cylinder 400 to the other end of the GIL cylinder 400, it is determined that the roundness of the GIL cylinder 400 satisfies the requirement. The roundness measurement block 100 is also provided with a traction rope 220 on the other side.

Specifically, after the above-described roundness measuring slider 100 is assembled, the roundness measuring process is further performed in the following manner:

5. tying one of the traction ropes to a prepared power trolley, and putting the trolley into one end of the cylinder; the power trolley is a remote control trolley.

6. The control power trolley drives the traction rope to drive from one end of the barrel to the other end.

7. And after the power trolley reaches the other end of the barrel, taking out the power trolley from the barrel and placing aside.

8. The tool is placed into the barrel, and the traction rope is pulled by a professional from the other end of the barrel, so that the tool moves along the axis direction of the barrel.

9. If the clamping phenomenon appears when the tool is pulled in the barrel, the barrel is out of round, and the pulling rope can be pulled from the other end to take the tool out of the barrel.

10. The tool is pulled from one end of the cylinder to the other end of the cylinder, the roundness of the cylinder is up to the standard without obstacles, and the whole operation flow is finished.

If the roundness measuring slider 100 is stuck in the GIL cylinder 400 during the pulling process, which indicates that the roundness of the GIL cylinder 400 does not meet the requirement currently, the traction rope can be pulled from the other end to pull out the roundness measuring slider 100.

In a preferred embodiment of this embodiment, the section of the roundness measuring slider 100 is a circle, the maximum radius of the circle is R1, and the radius of the GIL cylinder 400 is R2; preferably, 0.95R2 ≦ R1 ≦ R2, e.g., 0.99R2 for R1, 0.98R2 for R1, 0.97R2 for R1, and 0.96R2 for R1.

The device provided by the embodiment is convenient to process and manufacture, low in cost and simple to use. The risk that can greatly reduced barrel out of round brought when inspection GIL barrel raw and other materials, for traditional mode, the device that this embodiment provided has reduced time cost and to the strict control of quality. The device can clearly know the out-of-round condition of the cylinder body in the using process, thereby greatly reducing the repair work caused by the out-of-round condition of the cylinder body in the next procedure; plays a crucial role in the whole project. In specific engineering application, the existing tool structure can be modified or optimally designed according to the GIL bus specification, so that a series of problems caused by barrel raw materials in the future are avoided.

Example two

In this embodiment, on the basis of the first embodiment, the power cart 400 may be integrally formed with the roundness measuring slide 100, for example, the power cart 400 may be directly and integrally connected to the side surface of the roundness measuring slide 100 in a manner similar to the above-mentioned connecting rod.

EXAMPLE III

On the basis of the first embodiment, the power trolley 400 can be directly cancelled, and a professional can directly pull the traction rope to measure; i.e. traction is provided manually directly by the user.

And to avoid the possibility of traction ropes that are not axially oriented along the GIL cylinder 400, the ropes may be replaced with hard steel or similar material to the connector rod.

Example four

In this embodiment, in addition to the above embodiments, the roundness measuring slider may be provided in a ring shape, and the roundness of the outer wall of the GIL cylinder may be measured by engaging the roundness measuring slider with the outer wall of the GIL cylinder; GIL cylinders are typically injection molded of a material having a uniform thickness. Therefore, the roundness of the GIL cylinder can be detected by measuring the roundness of the outer side wall of the GIL cylinder, and the outer side wall of the GIL cylinder can be easily repaired by painting even if the outer side wall of the GIL cylinder is carelessly scraped in the measuring process; but the inner side walls are relatively difficult.

In addition, the roundness of the GIL cylinder can be detected by using the roundness measuring slider 100 and a circular ring as shown in fig. 1 respectively according to actual requirements.

Finally, it should be understood that the above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Those skilled in the art can make many changes and simple substitutions to the technical solution of the present invention without departing from the technical solution of the present invention, and the technical solution of the present invention is protected by the following claims.