CN214008262U - Automatic LVDT device of rectifying - Google Patents
Automatic LVDT device of rectifying Download PDFInfo
- Publication number
- CN214008262U CN214008262U CN202023262187.2U CN202023262187U CN214008262U CN 214008262 U CN214008262 U CN 214008262U CN 202023262187 U CN202023262187 U CN 202023262187U CN 214008262 U CN214008262 U CN 214008262U
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- China
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- lvdt
- rod
- sleeve
- universal connector
- valve
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Abstract
An automatic deviation rectifying LVDT device. One end of the feedback rod is directly and rigidly connected with the valve rod of the valve through the mechanical connecting rod, the concentricity of the feedback rod and the sleeve is difficult to guarantee in such a way, friction and abrasion exist between the feedback rod and the sleeve, and long-time abrasion can cause great reduction of measurement precision, so that the feedback rod is broken. The utility model discloses the constitution includes: the valve comprises a valve body (1), an LVDT sensor, a connecting plate (7) and a universal connector (9); the LVDT sensor is fixed on the valve body through a mounting back plate (2), and a feedback rod (4) on the LVDT sensor is connected on the connecting plate through a universal connector; the universal connector comprises a fixed cover (8), a ball body (12) and a lower ball sleeve (13), the ball body is located in the lower ball sleeve, and the top of the ball body is fixed with the fixed cover. The utility model is used for automatic LVDT device of rectifying.
Description
Technical Field
The utility model relates to an automatic LVDT device of rectifying.
Background
The displacement sensor of the low-pressure steam inlet regulating valve of the original water supply pump steam turbine is fixed on the mounting base plate, one end of the feedback rod is directly rigidly connected with the valve rod of the valve through the mechanical connecting rod, the other end of the feedback rod generates displacement in the sleeve, position feedback output of the regulating valve is formed, closed-loop control of steam inlet quantity of the water supply pump steam turbine is realized, concentricity of the feedback rod and the sleeve is difficult to guarantee in such a way, friction and abrasion exist between the feedback rod and the sleeve, long-time abrasion can lead to great reduction of measurement precision, the feedback rod is broken, meanwhile, high-frequency vibration exists in the low-pressure regulating valve of the water supply pump steam turbine, the shaking of the feedback rod is caused to influence the measurement precision, until radial rotation occurs, and the breakage of the feedback rod is caused.
Disclosure of Invention
The utility model aims at providing an automatic LVDT device of rectifying.
The above purpose is realized by the following technical scheme:
the automatic deviation rectifying LVDT device comprises a valve body, an LVDT sensor, a connecting plate and a universal connector;
the LVDT sensor is fixed on the valve body through a mounting back plate, and a feedback rod on the LVDT sensor is connected on the connecting plate through a universal connector;
the universal connector comprises a fixed cover, a ball body and a lower ball sleeve, the ball body is located in the lower ball sleeve, and the top of the ball body is fixed with the fixed cover.
In the automatic deviation rectifying LVDT device, an upper connecting rod on the fixed cover is in threaded connection with a nut at the bottom of the connecting plate, a lower connecting rod at the bottom of the lower ball sleeve is in rotatable connection with an adjusting nut, and the adjusting nut is in threaded connection with the feedback rod.
Has the advantages that:
1. the utility model discloses be connected through universal connector between feedback rod and the connecting plate, the vibration that has reduced most water-feeding pump steam turbine low pressure admission governing valve with deflect the influence to feedback rod and coil, the effectual accuracy of having guaranteed LVDT sensor stroke measurement has guaranteed the normal operating of water-feeding pump steam turbine, has guaranteed generating set's safe operation.
2. The utility model discloses an universal connector connects, has alleviateed the high-frequency vibration of water-feeding pump steam turbine low pressure admission governing valve to the influence that the feedback pole produced, connects through universal connector, and the connecting plate can not exert an influence to the feedback pole when slight activity, has solved easy wearing and tearing of feedback pole, cracked problem.
Description of the drawings:
FIG. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic diagram of the construction of the universal connector;
in the figure: 1. a valve body; 2. mounting a back plate; 3. a sleeve; 4. a feedback lever; 5. mounting holes; 6. an upper connecting rod; 7. a connecting plate; 8. a fixed cover; 9. a universal connector; 10. a fastener; 11. a valve stem; 12. a sphere; 13. a ball sleeve is arranged; 14. a lower connecting rod; 15. and adjusting the nut.
The specific implementation mode is as follows:
example 1:
the automatic deviation rectifying LVDT device comprises a valve body 1, an LVDT sensor, a connecting plate 7 and a universal connector 9;
the LVDT sensor is fixed on the valve body through a mounting back plate 2, a feedback rod 4 on the LVDT sensor is connected on the connecting plate through a universal connector, and a valve rod 11 is fixed at the top of the connecting plate;
the sleeve 3 of the LVDT sensor is fixed on the mounting back plate through a fastener 10, and the mounting back plate is provided with a mounting hole 5 which is fixed with the valve body through a mounting bolt;
the universal connector comprises a fixed cover 8, a ball body 12 and a lower ball sleeve 13, wherein the ball body is positioned in the lower ball sleeve, and the top of the ball body is fixed with the fixed cover.
Example 2:
according to the automatic deviation rectifying LVDT device of the embodiment 1, the upper connecting rod 6 on the fixed cover is in threaded connection with the nut at the bottom of the connecting plate, the lower connecting rod 14 at the bottom of the lower ball sleeve is rotatably connected with the adjusting nut 15, and the adjusting nut is in threaded connection with the feedback rod.
Claims (2)
1. An automatic LVDT device of rectifying, characterized by: the automatic deviation rectifying LVDT device comprises a valve body, an LVDT sensor, a connecting plate and a universal connector;
the LVDT sensor is fixed on the valve body through a mounting back plate, and a feedback rod on the LVDT sensor is connected on the connecting plate through a universal connector;
the universal connector comprises a fixed cover, a ball body and a lower ball sleeve, the ball body is located in the lower ball sleeve, and the top of the ball body is fixed with the fixed cover.
2. The automatic deskewing LVDT device according to claim 1, wherein: the upper connecting rod on the fixed cover is in threaded connection with the nut at the bottom of the connecting plate, the lower connecting rod at the bottom of the lower ball sleeve is in rotatable connection with an adjusting nut, and the adjusting nut is in threaded connection with the feedback rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023262187.2U CN214008262U (en) | 2020-12-30 | 2020-12-30 | Automatic LVDT device of rectifying |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023262187.2U CN214008262U (en) | 2020-12-30 | 2020-12-30 | Automatic LVDT device of rectifying |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214008262U true CN214008262U (en) | 2021-08-20 |
Family
ID=77293684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023262187.2U Active CN214008262U (en) | 2020-12-30 | 2020-12-30 | Automatic LVDT device of rectifying |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214008262U (en) |
-
2020
- 2020-12-30 CN CN202023262187.2U patent/CN214008262U/en active Active
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