CN213631920U - Hydroelectric set stator location muscle chord distance measuring tool - Google Patents
Hydroelectric set stator location muscle chord distance measuring tool Download PDFInfo
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- CN213631920U CN213631920U CN202023068286.7U CN202023068286U CN213631920U CN 213631920 U CN213631920 U CN 213631920U CN 202023068286 U CN202023068286 U CN 202023068286U CN 213631920 U CN213631920 U CN 213631920U
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Abstract
A measuring tool for chord distance of stator positioning ribs of a hydroelectric generating set comprises a measuring rod, wherein the measuring rod comprises a fixed section measuring rod and a contact section measuring rod, a movable cavity is arranged in the fixed section measuring rod, and a measuring contact is slidably arranged in the contact section measuring rod; the fixed section measuring rod is connected with the supporting cylinder, and the movable cavity is communicated with the inner cavity of the supporting cylinder; a transmission rod is arranged in the supporting cylinder, and the transmission rod and the measuring contact are transmitted through a transmission part; the top of the transmission rod is connected with a displacement meter. The transmission mechanism of the utility model converts the displacement of the measuring head into the indicating value of the dial indicator, so that the reading is more visual, and meanwhile, the precision fit of the transmission mechanism can completely ensure the measuring precision; the fixed end measuring rod and the measuring contact are consistent with the positioning rib profile line, so that the measuring and point finding are facilitated, and the working efficiency is obviously improved.
Description
Technical Field
The utility model belongs to the technical field of hydroelectric set stator location muscle chord distance measures, in particular to hydroelectric set stator location muscle chord distance measuring tool.
Background
The adjustment of the positioning ribs is an important work for the stator installation of the water turbine generator set, the deviation between the chord distance of the positioning ribs and the average value is not more than +/-0.25 mm, the accumulative deviation is not more than 0.4mm and the precision requirement is extremely high in GB8564 'technical specification for the installation of the water turbine generator set'.
The positioning ribs are in a non-standard shape, thousands of measuring points are measured at one time, a measuring head of a common tool (such as an inside micrometer) is not matched with the profile lines of the positioning ribs, and the measuring efficiency is low; the chord distance sample plate provided by a machine set manufacturer is fixed in length, and only a qualitative result (compared with a design value) can be obtained, so that the measuring tool for the chord distance of the stator positioning rib of the water turbine generator set is continuously used in daily maintenance and overhaul work.
Disclosure of Invention
In view of the technical problems in the prior art, the transmission mechanism of the measuring tool for the chord distance of the stator positioning rib of the hydroelectric generating set provided by the utility model converts the displacement of the measuring head into the indicating value of the dial indicator, so that the reading is more visual, and meanwhile, the precise matching of the transmission mechanism can completely ensure the measuring precision; the fixed end measuring rod and the measuring contact are consistent with the positioning rib profile line, so that the measuring and point finding are facilitated, and the working efficiency is obviously improved.
In order to solve the technical problem, the utility model discloses following technical scheme has been taken and has been realized:
a measuring tool for chord distance of stator positioning ribs of a hydroelectric generating set comprises a measuring rod, wherein the measuring rod comprises a fixed section measuring rod and a contact section measuring rod, a movable cavity is arranged in the fixed section measuring rod, and a measuring contact is slidably arranged in the contact section measuring rod; the fixed section measuring rod is connected with the supporting cylinder, and the movable cavity is communicated with the inner cavity of the supporting cylinder; a transmission rod is arranged in the supporting cylinder, and the transmission rod and the measuring contact are transmitted through a transmission part; the top of the transmission rod is connected with a displacement meter.
In the preferred scheme, the transmission part is a pendulum, and the measuring contact drives the transmission rod to move up and down through the pendulum.
In a preferred scheme, the transmission rod is connected with the support barrel through a spring.
In a preferred scheme, the transmission rod comprises an upper section transmission rod and a lower section transmission rod, and a baffle is arranged between the upper section transmission rod and the lower section transmission rod; the supporting cylinder comprises a lower cavity and an upper cavity, the inner diameter of the lower cavity is larger than that of the upper cavity, the baffle is in sliding fit with the inner wall of the lower cavity, and a spring is arranged above the baffle; the upper section transmission rod is connected with the displacement meter.
In a preferred scheme, the displacement meter is a dial indicator.
In the preferred scheme, the dial indicator is inserted into the upper cavity and fixed through a puller bolt, and a thimble of the dial indicator is in contact with the upper-section transmission rod.
In a preferred scheme, one end of the measuring contact is provided with a blocking piece, and the blocking piece is positioned in the movable cavity.
In the preferred scheme, the measuring rod at the fixed section is connected with the measuring rod at the contact section in a socket or thread way; the supporting cylinder is connected with the measuring rod of the fixed section in a socket or thread way.
In the preferred scheme, the measuring rod is used for being placed between two positioning ribs, the fixed section measuring rod is attached to the side portions of the positioning ribs, and the end portion of a measuring contact in the contact section measuring rod is in contact with the side portions of the positioning ribs.
This patent can reach following beneficial effect:
1. this patent is improved generation stator location muscle chord length measuring tool, and stiff end measuring staff and measurement contact all are unanimous with location muscle type line, are convenient for measure and look for the point, are showing and are improving work efficiency.
2. The displacement of the measuring head is converted into the indicating value of the dial indicator through the transmission mechanism, so that the reading is more visual, and meanwhile, the precision matching of the transmission mechanism can completely ensure the measurement precision.
Drawings
The invention will be further explained with reference to the following figures and examples:
FIG. 1 is a cross-sectional view of the present invention;
FIG. 2 is an enlarged view of FIG. 1 at B;
fig. 3 is a sectional view taken along line a-a of the present invention.
In the figure: 1-positioning rib, 2-fixed section measuring bar, 3-contact section measuring bar, 4-measuring contact, 5-transmission bar, 6-spring, 7-meter frame, 8-puller bolt, 9-dial indicator, 10-pendulum bob, 11-supporting cylinder, 12-movable cavity, 13-baffle plate and 14-baffle plate.
Detailed Description
The preferred scheme is as shown in fig. 1 to 3, the measuring tool for measuring the chord distance of the stator positioning rib of the hydroelectric generating set comprises a measuring rod, wherein the measuring rod comprises a fixed section measuring rod 2 and a contact section measuring rod 3, a movable cavity 12 is arranged in the fixed section measuring rod 2, and a measuring contact 4 is slidably arranged in the contact section measuring rod 3; the fixed section measuring rod 2 is connected with the supporting cylinder 11, and the movable cavity 12 is communicated with the inner cavity of the supporting cylinder 11; a transmission rod 5 is arranged in the support cylinder 11, and the transmission rod 5 and the measuring contact 4 are transmitted through a transmission part; the top of the transmission rod 5 is connected with a displacement meter.
When the measuring rod is tightly attached to the measured surface of the positioning rib, the measuring rod at the fixed section is consistent with the profile line of the positioning rib and can be tightly attached.
Further, the transmission piece is a pendulum 10, and the measuring contact 4 drives the transmission rod 5 to move up and down through the pendulum 10.
During measurement, the measuring contact moves towards the measuring rod of the fixed section under the action of external force, the pendulum bob in contact with the measuring contact converts the horizontal movement of the measuring contact into the vertical movement of the transmission rod, and the movement amount is reflected on the dial indicator; when the measuring contact is not subjected to external force, the measuring contact can return to the initial state under the action of the spring.
Further, the transmission rod 5 is connected to the support cylinder 11 by means of a spring 6.
Further, the transmission rod 5 comprises an upper transmission rod and a lower transmission rod, and a baffle 13 is arranged between the upper transmission rod and the lower transmission rod; the supporting cylinder 11 comprises a lower cavity and an upper cavity, the inner diameter of the lower cavity is larger than that of the upper cavity, the baffle 13 is in sliding fit with the inner wall of the lower cavity, and a spring 6 is arranged above the baffle 13; the upper section transmission rod is connected with the displacement meter.
Further, the displacement meter is a dial indicator 9.
Further, a dial indicator 9 is inserted in the upper cavity and fixed through a puller bolt 8, and a thimble of the dial indicator 9 is in contact with the upper-section transmission rod. After the dial indicator is erected, the jacking bolt is screwed down, and the function of fixing the dial indicator is achieved.
Furthermore, a blocking piece 14 is arranged at one end of the measuring contact 4, and the blocking piece 14 is positioned in the movable cavity 12.
Furthermore, the fixed section measuring rod 2 and the contact section measuring rod 3 are connected in a socket or thread way; the supporting cylinder 11 is connected with the fixed section measuring rod 2 in a socket or thread way.
Further, the measuring rod is used for being placed between two location muscle 1, and fixed section measuring rod 2 sets up with the laminating of 1 lateral part of location muscle, and 4 tip of measurement contact in the contact section measuring rod 3 contact with 1 lateral part of location muscle.
The working principle of the whole device is as follows:
and placing a chord distance measuring tool between adjacent positioning ribs, enabling the fixed end measuring rod to be tightly attached to the measured surface of the positioning ribs, slightly swinging the measuring rod up and down after the measuring rod contact is attached to the measured surface of the positioning ribs, and simultaneously reading the maximum reading of the dial indicator, namely the chord distance between the adjacent positioning ribs.
The check of the chord distance measuring tool can be completed by the inner micrometer at the same measuring point by the method.
The above-mentioned embodiments are merely preferred embodiments of the present invention, and should not be considered as limitations of the present invention, and the protection scope of the present invention should be defined by the technical solutions described in the claims, and includes equivalent alternatives of technical features in the technical solutions described in the claims. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention.
Claims (9)
1. The utility model provides a hydroelectric set stator location muscle chord distance measuring tool which characterized in that: the measuring device comprises a measuring rod, wherein the measuring rod comprises a fixed section measuring rod (2) and a contact section measuring rod (3), a movable cavity (12) is arranged in the fixed section measuring rod (2), and a measuring contact (4) is slidably arranged in the contact section measuring rod (3); the fixed section measuring rod (2) is connected with the supporting cylinder (11), and the movable cavity (12) is communicated with the inner cavity of the supporting cylinder (11); a transmission rod (5) is arranged in the support cylinder (11), and the transmission rod (5) and the measuring contact (4) are transmitted through a transmission part; the top of the transmission rod (5) is connected with a displacement meter.
2. The hydroelectric set stator positioning muscle chord distance measuring tool of claim 1, characterized in that: the transmission piece is a pendulum (10), and the measuring contact (4) drives the transmission rod (5) to move up and down through the pendulum (10).
3. The hydroelectric set stator positioning muscle chord distance measuring tool of claim 1 or 2, characterized in that: the transmission rod (5) is connected with the support cylinder (11) through a spring (6).
4. The hydroelectric set stator positioning muscle chord distance measuring tool of claim 3, characterized in that: the transmission rod (5) comprises an upper transmission rod and a lower transmission rod, and a baffle (13) is arranged between the upper transmission rod and the lower transmission rod; the supporting cylinder (11) comprises a lower cavity and an upper cavity, the inner diameter of the lower cavity is larger than that of the upper cavity, the baffle (13) is in sliding fit with the inner wall of the lower cavity, and a spring (6) is arranged above the baffle (13); the upper section transmission rod is connected with the displacement meter.
5. The hydroelectric set stator positioning muscle chord distance measuring tool of claim 1 or 4, characterized in that: the displacement meter is a dial indicator (9).
6. The hydroelectric set stator positioning muscle chord distance measuring tool of claim 5, characterized in that: the dial indicator (9) is inserted in the upper cavity and fixed through the puller bolt (8), and a thimble of the dial indicator (9) is in contact with the upper-section transmission rod.
7. The hydroelectric set stator positioning muscle chord distance measuring tool of claim 1 or 4, characterized in that: one end of the measuring contact (4) is provided with a baffle sheet (14), and the baffle sheet (14) is positioned in the movable cavity (12).
8. The hydroelectric set stator positioning muscle chord distance measuring tool of claim 1, characterized in that: the fixed section measuring rod (2) is connected with the contact section measuring rod (3) in a socket or thread way; the supporting cylinder (11) is connected with the fixed section measuring rod (2) in a socket or thread way.
9. The hydroelectric set stator positioning muscle chord distance measuring tool of claim 1, characterized in that: the measuring rod is used for being placed between two positioning ribs (1), the fixed section measuring rod (2) is attached to the side portion of the positioning ribs (1), and the end portion of the measuring contact (4) in the contact section measuring rod (3) is in contact with the side portion of the positioning ribs (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023068286.7U CN213631920U (en) | 2020-12-18 | 2020-12-18 | Hydroelectric set stator location muscle chord distance measuring tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023068286.7U CN213631920U (en) | 2020-12-18 | 2020-12-18 | Hydroelectric set stator location muscle chord distance measuring tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213631920U true CN213631920U (en) | 2021-07-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023068286.7U Active CN213631920U (en) | 2020-12-18 | 2020-12-18 | Hydroelectric set stator location muscle chord distance measuring tool |
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| CN (1) | CN213631920U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118337009A (en) * | 2024-04-30 | 2024-07-12 | 中国水利水电第四工程局有限公司 | Positioning tool for dove tail ribs of generator stator |
-
2020
- 2020-12-18 CN CN202023068286.7U patent/CN213631920U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118337009A (en) * | 2024-04-30 | 2024-07-12 | 中国水利水电第四工程局有限公司 | Positioning tool for dove tail ribs of generator stator |
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