CN209101970U - A kind of GIS metal shell inner diameter measuring device - Google Patents
A kind of GIS metal shell inner diameter measuring device Download PDFInfo
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- CN209101970U CN209101970U CN201822059986.6U CN201822059986U CN209101970U CN 209101970 U CN209101970 U CN 209101970U CN 201822059986 U CN201822059986 U CN 201822059986U CN 209101970 U CN209101970 U CN 209101970U
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- rod
- metal shell
- inner diameter
- shell inner
- measuring scale
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Abstract
The utility model discloses a kind of GIS metal shell inner diameter measuring devices, are related to GIS product testing technical field.Including vertically disposed first body of rod and second body of rod, first body of rod is shorter than second body of rod, and the midpoint of first body of rod is connect with second body of rod one end, and second body of rod other end is equipped with a measuring scale, measuring scale is located along the same line with second body of rod, and the measuring piece of measuring scale is scalable.First body of rod and vertical bar are hollow cylinder.The utility model has the beneficial effects that: structure is simple, detection accuracy is high, easy to operate, at low cost, is suitable for mass detection.
Description
Technical field
The utility model relates generally to GIS product testing technical field, and specifically a kind of GIS is measured with metal shell internal diameter
Device.
Background technique
Metal supervision work is the important component of technical supervision in power industry, even more SF6 gas-insulated closing gold
Belong to the important measures of field of switches safety in production.It is continuous in view of current many requirements of the electric power enterprise to metal supervision management work
It improves, is also increasingly stringenter in the detection job requirement to equipment size, performance various aspects at present.Metal shell is SF6 gas
Critical component in insulation and obturation metal switch apparatus (abbreviation GIS), all GIS devices are arranged in metal shell, metal
Shell needs to carry out tightened up detection.The measurement of metal shell circle internal diameter is the most important work of metal supervision, metal
Housing inner diameter is to measure one important parameter of metal shell deflection, and metal shell internal diameter is unqualified to easily cause insulation distance not
It is enough, cause to discharge, cause a serious accident.Since GIS metal shell internal diameter is larger, it is not available the measurement of the tools such as vernier caliper,
It at present for the measurement of GIS metal shell internal diameter there are no relatively good method, is measured by common measuring scale, this
Kind mode is inconvenient for operation, and measurement accuracy is not high.
The discovery when retrieving to related subject, Chinese utility model patent CN207456350U disclose a kind of large-diameter pipe
Body bellmouth inside-diameter measuring tool, the tool is longitudinally connected using depth gage and connecting rod, by the way that both ends are stuck in inboard wall of tube body,
Realize the measurement to internal diameter of tube body.But when being measured using internal diameter of the above-mentioned measuring device to metal shell, on the one hand not
It is easily found the center of circle of shell circular cross-section, leading to measurement, there are errors；On the other hand, device support is insecure, and when measurement holds
Easily inclination, causes measurement efficiency low.
Utility model content
To solve the deficiencies in the prior art, the utility model provides a kind of GIS metal shell inner diameter measuring device, energy
It is quickly found out the center of circle of circular cross-section, and is able to achieve stable support, measurement efficiency and precision can be effectively improved.
The utility model to achieve the above object, is implemented with the following technical solutions:
A kind of GIS metal shell inner diameter measuring device, including vertically disposed first body of rod and second body of rod, the first bar
Body is shorter than second body of rod, and the midpoint of first body of rod is connect with second body of rod one end, and second body of rod other end is equipped with a measuring scale, surveys
Gage is located along the same line with second body of rod, and the measuring piece of measuring scale is scalable.
First body of rod is arranged in the second body of rod ending vertical being arranged in the same direction with measuring scale in the utility model, as long as by the dress
It puts in shell, first body of rod is stuck in inner walls, second body of rod can be made to pass through the center of circle of shell circular cross-section, more held
It easily finds the diameter of shell accurately, measures more acurrate.It, can be with moreover, the second body of rod both ends and measuring scale front end are withstood in inner walls
Realize gusseted, stability of strutting system is stronger, and when measurement is less likely to occur to fall off.First body of rod and the second body of rod length are being set
When, it need to consider that housing inner diameter selection is suitably sized, especially the length of first body of rod cannot be too long, to ensure first body of rod more
Close to inner walls, guarantee the accuracy of measurement.The measuring piece of measuring scale is scalable, is placing first body of rod and second body of rod
Afterwards, by adjusting measuring scale measuring piece extension elongation, so that measuring piece front end is withstood in inner walls, measuring scale registration is read simultaneously
In addition measuring scale blade length, the second body of rod length and the first shank diameter, can be obtained housing inner diameter.
Preferably, the measuring scale is depthometer or extension bar type inside micrometer.
Preferably, second body of rod is hollow cylinder, and second body of rod and measuring scale fixing seat tail end are socketed.Measuring scale
Detachably, facilitate installation and replacement.
Preferably, first body of rod is hollow cylinder.
For the precision for guaranteeing measurement, the length of first body of rod cannot be too long, and first body of rod length and second body of rod are long
Degree ratio is 1/5-1/3.
Compared with prior art, the beneficial effects of the utility model are:
1, present apparatus structure is simple, easy to operate, accurate positioning, while ensure that detection accuracy, saves work people
The workload of member, improves detection efficiency.
2, measuring scale selects depthometer or extension bar type inside micrometer according to required precision, and tail end is convenient for being connected with vertical bar
It connects, the other end adjusts gear, further improves the measurement efficiency of metal shell internal diameter.
3, two bodies of rod use hollow cylindrical structure, have both facilitated installation measuring scale, and also can reduce installation weight, and save
Production cost.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the usage state diagram of the utility model；
Label shown in attached drawing: 1, first body of rod, 2, second body of rod, 3, depthometer, 4, shell.
Specific embodiment
With reference to the drawings and specific embodiments, the utility model is described in further detail.It should be understood that these embodiments are only used for
Illustrate the utility model rather than limitation the scope of the utility model.In addition, it should also be understood that, having read the utility model instruction
Content after, those skilled in the art can make various changes or modifications the utility model, and such equivalent forms are equally fallen
In range defined herein.
The standardized element used in the utility model can commercially, and shaped piece is according to specification and attached
The record of figure can carry out it is customized, the specific connection type of each part be all made of in the prior art mature bolt, rivet,
The conventional means such as welding, stickup.This will not be detailed here.
A kind of GIS metal shell inner diameter measuring device, including first body of rod 1, second body of rod 2 and depthometer 3, described
One body of rod 1 and second body of rod 2 are vertically arranged (verticality requires 0.1), the fixed company in the midpoint of first body of rod and second body of rod one end
It connects, second body of rod other end is socketed 3 rod support end of depthometer.First body of rod and second body of rod are made of round tube, and first
The body of rod and the second body of rod length ratio meet 1/5-1/3 range.
Application method:
For measuring 880 ± 0.8mm of metal shell internal diameter, first body of rod is usedSeamless steel pipe, length 200mm；
Second body of rod usesSeamless steel pipe, length 720mm；It is welded in the middle part of second body of rod one end and first body of rod, other end installation
(socket) depthometer.
The present apparatus when in use, as shown in Figure 1 and Figure 2, places the device in inside metal shell, first body of rod and
Inner walls are in contact, and then adjust depthometer, and depthometer stylus front end is made to be in contact with metal shell inner wall, first body of rod with
There are two points to be in contact between inner walls, has a point to be in contact between depthometer stylus and inner walls, is connected to form interior
Triangle is connect, so that device is effectively fixed in metal shell inner wall, reduces the heeling error in operation.Read the registration of depthometer
H1, in addition (720mm is adjusted high the height H3 of the blade altitude information H2 of depthometer, second body of rod according to measured inner diameter size
Degree) and first body of rod diameter H4 (20mm), just obtain the actual size H of metal shell internal diameter, i.e. H=H 1+H2+H3+
H4.The result measured is compared with design size tolerance, and meeting design tolerance size is qualified products.It in this way can be right
Same cross-section location carries out multimetering, to improve the measurement accuracy of metal shell internal diameter, meets quickly paragraph by paragraph piece by piece
Measurement request.
Claims (5)
1. a kind of GIS metal shell inner diameter measuring device, it is characterised in that: including vertically disposed first body of rod (1) and
Bipole body (2), first body of rod (1) are shorter than second body of rod (2), and the midpoint of first body of rod (1) is connect with second body of rod (2) one end,
Second body of rod (2) other end is equipped with a measuring scale (3), and measuring scale (3) is located along the same line with second body of rod (2), measuring scale
(3) measuring piece is scalable.
2. a kind of GIS metal shell inner diameter measuring device according to claim 1, it is characterised in that: the measuring scale
It (3) is depthometer or extension bar type inside micrometer.
3. a kind of GIS metal shell inner diameter measuring device according to claim 1 or 2, it is characterised in that: described second
The body of rod (2) is hollow cylinder, and second body of rod (2) and measuring scale (3) fixing seat tail end are socketed.
4. a kind of GIS metal shell inner diameter measuring device according to claim 3, it is characterised in that: first bar
Body (1) is hollow cylinder.
5. a kind of GIS metal shell inner diameter measuring device according to claim 1, it is characterised in that: first bar
Body (1) length and second body of rod (2) length ratio are 1/5-1/3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822059986.6U CN209101970U (en) | 2018-12-07 | 2018-12-07 | A kind of GIS metal shell inner diameter measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822059986.6U CN209101970U (en) | 2018-12-07 | 2018-12-07 | A kind of GIS metal shell inner diameter measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209101970U true CN209101970U (en) | 2019-07-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822059986.6U Active CN209101970U (en) | 2018-12-07 | 2018-12-07 | A kind of GIS metal shell inner diameter measuring device |
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| CN (1) | CN209101970U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113426966A (en) * | 2021-06-11 | 2021-09-24 | 唐山钢铁集团有限责任公司 | Device and method for adjusting taper of continuous casting crystallizer |
-
2018
- 2018-12-07 CN CN201822059986.6U patent/CN209101970U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113426966A (en) * | 2021-06-11 | 2021-09-24 | 唐山钢铁集团有限责任公司 | Device and method for adjusting taper of continuous casting crystallizer |
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