CN212909469U - Circulating water liquid accuse butterfly valve protection switch - Google Patents
Circulating water liquid accuse butterfly valve protection switch Download PDFInfo
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- CN212909469U CN212909469U CN202021120868.2U CN202021120868U CN212909469U CN 212909469 U CN212909469 U CN 212909469U CN 202021120868 U CN202021120868 U CN 202021120868U CN 212909469 U CN212909469 U CN 212909469U
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- transmission shaft
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Abstract
The utility model relates to a power plant circulating water liquid accuse butterfly valve technical field especially indicates a circulating water liquid accuse butterfly valve protection switch, and it includes liquid accuse butterfly valve pneumatic cylinder support and rotates the transmission shaft that sets up on liquid accuse butterfly valve pneumatic cylinder support, still includes first response piece, second response piece, and first response piece is used for being connected with the external circuit electricity, and the second response piece is used for triggering first response piece to export the electric signal to the external circuit, and first response piece sets up in liquid accuse butterfly valve pneumatic cylinder support, and second response piece off-centre sets up in the transmission shaft; the transmission shaft is rotated to enable the second sensing piece to be close to the first sensing piece, and when the axle centers of the first sensing piece, the second sensing piece and the transmission shaft are located on the same straight line, the second sensing piece can trigger the first sensing piece to output an electric signal to an external circuit. Compared with a contact travel switch, the utility model discloses be difficult for receiving sea wind erosion or rainfall intake corrosion contact, can reduce circulating water pump suppress the hidden danger of pressing damage and circulating water pipeline superpressure burst pipe.
Description
Technical Field
The utility model belongs to the technical field of power plant circulating water liquid accuse butterfly valve technique and specifically relates to indicate a circulating water liquid accuse butterfly valve protection switch.
Background
The hydraulic control butterfly valve is one of butterfly valves and is divided into a pressure maintaining type, a locking type and an energy storage type. It is suitable for water pump outlet and water turbine inlet pipeline as closed valve and check valve to avoid and reduce medium backflow and produce excessive water hammer in pipeline system to protect pipeline system. A hydraulic control butterfly valve is often used in a circulating water system of a power plant, 3 contact type travel switches are arranged on each general circulating water hydraulic control butterfly valve to serve as feedback of the state of a valve, and the travel switches at a certain angle serve as protection stopping conditions for interlocking starting and running of a circulating water pump.
In some coastal power plants, circulating water is directly taken from seawater, a pump room is arranged beside a water taking open channel in the open air, equipment is seriously influenced by sea wind and a humid environment, because a contact type travel switch is in a semi-open type, a cable inlet hole is directly open, at the initial stage of test operation of a unit, a hydraulic control butterfly valve travel switch corrodes a contact due to sea wind erosion or rainfall inflow for many times, the circulating water pump can not be started in an interlocking manner, the protection failure of the circulating water pump is caused, and the hidden danger of suppressing pressure damage and overpressure pipe explosion of the circulating water pump is caused.
SUMMERY OF THE UTILITY MODEL
The utility model provides a circulating water pilot operated butterfly valve protection switch has solved current contact travel switch and has touched electric capacity and easily be corroded by sea wind or rainfall intake corrosion, leads to the unable interlocking of circulating water pump to start, has the problem of great potential safety hazard to circulating water pump.
In order to solve the technical problem, the utility model discloses a following technical scheme:
a protection switch of a circulating water hydraulic control butterfly valve comprises a hydraulic control butterfly valve hydraulic cylinder support and a transmission shaft rotatably arranged on the hydraulic control butterfly valve hydraulic cylinder support, and further comprises a first sensing piece and a second sensing piece, wherein the first sensing piece is used for being electrically connected with an external circuit, the second sensing piece is used for triggering the first sensing piece to output an electric signal to the external circuit, the first sensing piece is arranged on the hydraulic control butterfly valve hydraulic cylinder support, and the second sensing piece is eccentrically arranged on the transmission shaft; the transmission shaft is rotated to enable the second sensing piece to be close to the first sensing piece, and when the axle centers of the first sensing piece, the second sensing piece and the transmission shaft are located on the same straight line, the second sensing piece can trigger the first sensing piece to output an electric signal to an external circuit.
Further, the first induction member comprises a first magnetic induction element, the second induction member comprises a second magnetic induction element, and when the first magnetic induction element and the second magnetic induction element are magnetically matched, the first magnetic induction element outputs an electric signal to an external circuit.
Further, the circulating water hydraulic control butterfly valve protection switch further comprises a first mounting assembly used for mounting the first sensing piece on the hydraulic control butterfly valve hydraulic cylinder support, and the first mounting assembly comprises a first mounting seat and a fixing piece; the first mounting seat is fixedly connected with the hydraulic cylinder bracket of the hydraulic control butterfly valve, and is provided with a mounting hole for the first sensing piece to pass through; the mounting is provided with two, two the mounting with first response piece threaded connection, first mount pad is located two between the mounting, rotates the mounting enables the mounting butt first mount pad.
Further, the mounting hole includes the bar hole, the bar hole is followed the axial setting of transmission shaft.
Further, circulating water liquid accuse butterfly valve protection switch still including be used for with the second response piece is installed the second installation component of transmission shaft, the second installation component includes second mount pad and regulating part, the second response piece is fixed in the second mount pad, the second mount pad with transmission shaft sliding connection, the regulating part set up in the second mount pad just be used for with the second mount pad is fixed in the transmission shaft.
Further, an annular sliding groove is formed in one end of the transmission shaft, the second mounting seat is connected with the annular sliding groove in a sliding and clamping mode, a second threaded hole is formed in the second mounting seat, the adjusting piece is in threaded connection with the second threaded hole, and the adjusting piece is rotated to enable the end portion of the adjusting piece to abut against the transmission shaft.
Further, the drive shaft is provided with angle markings.
The utility model has the advantages that: the utility model discloses utilize the second response piece to trigger first response piece is to the external circuit output signal of telecommunication, and the second response piece does not need the first response piece of contact alright compare with contact travel switch in order to trigger first response piece to the external circuit output signal of telecommunication near first response piece, the utility model discloses be difficult for receiving sea wind erosion or rainfall intake corrosion contact, probably lead to the unable interlocking of circulating water pump to start, cause circulating water pump failure of protection, can reduce circulating water pump suppress the hidden danger of pressing damage and circulating water pipeline superpressure burst pipe.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is a front view of the present invention;
fig. 2 is a schematic view of the state that the second sensing member triggers the first sensing member according to the present invention; a schematic exploded structure diagram;
fig. 3 is a cross-sectional view taken along the plane a-a in fig. 2.
Description of reference numerals: 11. a hydraulic cylinder bracket of a hydraulic control butterfly valve; 12. a drive shaft; 121. an annular chute; 122. marking an angle; 20. a first sensing member; 30. a second sensing member; 40. a first mounting assembly; 41. a first mounting seat; 411. mounting holes; 42. a fixing member; 50. a second mounting assembly; 51. a second mounting seat; 52. an adjusting member.
Detailed Description
In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention.
Examples
As shown in fig. 1 to 3, the utility model provides a circulating water liquid accuse butterfly valve protection switch, it includes liquid accuse butterfly valve pneumatic cylinder support 11 and rotates the transmission shaft 12 that sets up on liquid accuse butterfly valve pneumatic cylinder support 11, circulating water liquid accuse butterfly valve protection switch still includes first response piece 20, second response piece 30, first response piece 20 is used for being connected with external circuit electricity, second response piece 30 is used for triggering first response piece 20 outputs the electric signal to external circuit, first response piece 20 sets up in liquid accuse butterfly valve pneumatic cylinder support 11, second response piece 30 off-centre sets up in transmission shaft 12; the transmission shaft 12 is rotated to make the second sensing member 30 approach to the first sensing member 20, and when the axes of the first sensing member 20, the second sensing member 30 and the transmission shaft 12 are located on the same straight line, the second sensing member 30 can trigger the first sensing member 20 to output an electrical signal to an external circuit. The utility model discloses utilize second response piece 30 can trigger first response piece 20 is to the external circuit output signal of telecommunication, and second response piece 30 is when being close to first response piece 20, and second response piece 30 does not need the first response piece 20 of contact alright with trigger first response piece 20 to the external circuit output signal of telecommunication, compares with contact travel switch, the utility model discloses be difficult for receiving sea wind erosion or rainfall intake corrosion contact, probably lead to the unable interlocking of circulating water pump to start, cause circulating water pump protection failure, can reduce circulating water pump suppress the hidden danger of pressing damage and circulating water pipeline superpressure explosion pipe.
In this embodiment, the first sensing member 20 includes a first magnetic sensing element, the second sensing member 30 includes a second magnetic sensing element, when the first magnetic sensing element and the second magnetic sensing element are magnetically coupled, the transmission shaft 12 is rotated to make the second sensing member 30 approach the first sensing member 20, and when the axes of the first sensing member 20, the second sensing member 30 and the transmission shaft 12 are located on the same straight line, the first magnetic sensing element outputs an electrical signal to an external circuit. In other embodiments, the first sensing element 20 and the second sensing element 30 can be photo sensors, and the second sensing element 30 can trigger the first sensing element 20 to output an electrical signal to an external circuit without contacting the first sensing element 20.
As shown in fig. 3, the circulating water-controlled butterfly valve protection switch further comprises a first mounting assembly 40 for mounting the first sensing member 20 on the hydraulic-controlled butterfly valve hydraulic cylinder bracket 11, wherein the first mounting assembly 40 comprises a first mounting seat 41 and a fixing member 42; the first mounting seat 41 is fixedly connected with the hydraulic control butterfly valve hydraulic cylinder bracket 11, and the first mounting seat 41 is provided with a mounting hole 411 through which the first sensing part 20 passes; the mounting 42 is provided with two, two the mounting 42 with first response piece 20 threaded connection, mounting 42 can be the nut, and the outer wall of first response piece 20 is attacked threadedly, first mount pad 41 is located two between the mounting 42, rotate mounting 42 enables mounting 42 butt first mount pad 41. During specific installation, the first sensing part 20 passes through the installation hole 411, then the distance from the first sensing part 20 to the transmission shaft 12 is adjusted, wherein the distance can be adjusted according to the sensing distance between the first sensing part 20 and the second sensing part 30, and then the two fixing parts 42 are fixed on two sides of the first installation seat 41.
Preferably, in order to conveniently adjust first inductor 20, make first inductor 20 and second inductor 30 be in the coplanar, mounting hole 411 includes the bar hole, the bar hole is along the axial setting of transmission shaft 12 can conveniently be adjusted the position of first inductor 20 makes things convenient for first inductor 20 and second inductor 30 to respond to.
As shown in fig. 3, the circulating water-control butterfly valve protection switch further includes a second mounting assembly 50 for mounting the second sensing member 30 on the transmission shaft 12, the second mounting assembly 50 includes a second mounting seat 51 and an adjusting member 52, the second sensing member 30 is fixed to the second mounting seat 51, the second mounting seat 51 is slidably connected to the transmission shaft 12, and the adjusting member 52 is disposed on the second mounting seat 51 and is used for fixing the second mounting seat 51 to the transmission shaft 12. Specifically, an annular sliding groove 121 is formed in one end of the transmission shaft 12, the annular sliding groove 121 may be a dovetail groove, the second mounting seat 51 is slidably engaged with the annular sliding groove 121, a cam is disposed at a bottom end of the second mounting seat 51 and slidably connected with the annular sliding groove 121, a second threaded hole (not shown) is formed in the second mounting seat 51, the adjusting piece 52 is in threaded connection with the second threaded hole, the adjusting piece 52 may be a bolt, and the end of the adjusting piece 52 can abut against the transmission shaft 12 by rotating the adjusting piece 52. During specific work, the second mounting seat 51 is mounted in the annular sliding groove 121, the position of the second mounting seat 51 is designed according to the rotation stroke of the transmission shaft 12, it is guaranteed that the second sensing part 30 can trigger the first sensing part 20 within the rotation stroke range of the transmission shaft 12, and the adjusting part 52 can be rotated after the position of the second mounting seat 51 is adjusted, so that the end part of the adjusting part 52 abuts against the annular sliding groove 121 to be fixed.
As shown in fig. 1 and 2, in order to conveniently record the installation position of the second sensing member 30, the transmission shaft 12 is provided with an angle mark 122, so that secondary installation can be conveniently performed.
The working principle is as follows:
firstly, installing a first sensing part 20, welding a first installation seat 41 on a hydraulic control butterfly valve hydraulic cylinder bracket 11, then enabling the first sensing part 20 to penetrate through an installation hole 411, adjusting the distance between the first sensing part 20 and a transmission shaft 12, and then fixing two fixing parts 42 to two sides of the first installation seat 41;
secondly, mounting a second sensing piece 30, mounting a second mounting seat 51 in the annular sliding groove 121, designing the position of the second mounting seat 51 according to the rotation stroke of the transmission shaft 12, ensuring that the second sensing piece 30 can trigger the first sensing piece 20 within the rotation stroke range of the transmission shaft 12, and rotating the adjusting piece 52 after the position of the second mounting seat 51 is adjusted, so that the end part of the adjusting piece 52 abuts against the annular sliding groove 121 for fixing;
thirdly, when the axes of the first sensing member 20, the second sensing member 30 and the transmission shaft 12 are located on the same straight line, the sensing distance between the first sensing member 20 and the second sensing member 30 is finely adjusted.
To sum up, the utility model discloses utilize second response piece 30 to trigger first response piece 20 is to the external circuit output signal of telecommunication, and second response piece 30 is when being close to first response piece 20, and second response piece 30 does not need to contact first response piece 20 alright with trigger first response piece 20 to the external circuit output signal of telecommunication, compares with contact travel switch, the utility model discloses be difficult for receiving sea wind erosion or rainfall intake corrosion contact, probably lead to the unable interlocking of circulating water pump to start, cause circulating water pump failure of protection, can reduce circulating water pump suppress the hidden danger of pressing damage and circulating water pipeline superpressure explosion.
The above-mentioned embodiment is the utility model discloses the implementation scheme of preferred, in addition, the utility model discloses can also realize by other modes, any obvious replacement is all within the protection scope of the utility model under the prerequisite that does not deviate from this technical scheme design.
Claims (7)
1. The utility model provides a circulating water liquid accuse butterfly valve protection switch, includes liquid accuse butterfly valve pneumatic cylinder support (11) and rotates transmission shaft (12) that set up on liquid accuse butterfly valve pneumatic cylinder support (11), its characterized in that: the circulating water hydraulic control butterfly valve protection switch further comprises a first sensing piece (20) and a second sensing piece (30), the first sensing piece (20) is used for being electrically connected with an external circuit, the second sensing piece (30) is used for triggering the first sensing piece (20) to output an electric signal to the external circuit, the first sensing piece (20) is arranged on the hydraulic control butterfly valve hydraulic cylinder support (11), and the second sensing piece (30) is eccentrically arranged on the transmission shaft (12); the transmission shaft (12) is rotated to enable the second sensing piece (30) to be close to the first sensing piece (20), and when the axle centers of the first sensing piece (20), the second sensing piece (30) and the transmission shaft (12) are located on the same straight line, the second sensing piece (30) can trigger the first sensing piece (20) to output an electric signal to an external circuit.
2. The circulating water liquid accuse butterfly valve protection switch of claim 1, characterized in that: the first induction member (20) comprises a first magnetic induction element, the second induction member (30) comprises a second magnetic induction element, and when the first magnetic induction element and the second magnetic induction element are magnetically matched, the first magnetic induction element outputs an electric signal to an external circuit.
3. The circulating water liquid control butterfly valve protection switch of claim 1 or 2, wherein: the circulating water hydraulic control butterfly valve protection switch further comprises a first mounting assembly (40) used for mounting the first sensing piece (20) on the hydraulic control butterfly valve hydraulic cylinder support (11), and the first mounting assembly (40) comprises a first mounting seat (41) and a fixing piece (42); the first mounting seat (41) is fixedly connected with the hydraulic control butterfly valve hydraulic cylinder bracket (11), and the first mounting seat (41) is provided with a mounting hole (411) for the first sensing piece (20) to pass through; the fixing piece (42) is provided with two, two the fixing piece (42) with first response piece (20) threaded connection, first mount pad (41) are located two between fixing piece (42), rotate fixing piece (42) enable fixing piece (42) butt first mount pad (41).
4. The circulating water liquid accuse butterfly valve protection switch of claim 3, characterized in that: the mounting hole (411) comprises a strip-shaped hole, and the strip-shaped hole is arranged along the axial direction of the transmission shaft (12).
5. The circulating water liquid control butterfly valve protection switch of claim 1 or 2, wherein: circulating water liquid accuse butterfly valve protection switch still including be used for with second response piece (30) are installed second installation component (50) of transmission shaft (12), second installation component (50) include second mount pad (51) and regulating part (52), second response piece (30) are fixed in second mount pad (51), second mount pad (51) with transmission shaft (12) sliding connection, regulating part (52) set up in second mount pad (51) and be used for with second mount pad (51) are fixed in transmission shaft (12).
6. The circulating water liquid accuse butterfly valve protection switch of claim 5, characterized in that: annular spout (121) have been seted up to the one end of transmission shaft (12), second mount pad (51) slip joint in annular spout (121), second screw hole has been seted up in second mount pad (51), regulating part (52) with second screw hole threaded connection rotates regulating part (52) enable the tip butt of regulating part (52) transmission shaft (12).
7. The circulating water liquid control butterfly valve protection switch of claim 1 or 2, wherein: the drive shaft (12) is provided with an angle marking (122).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021120868.2U CN212909469U (en) | 2020-06-17 | 2020-06-17 | Circulating water liquid accuse butterfly valve protection switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021120868.2U CN212909469U (en) | 2020-06-17 | 2020-06-17 | Circulating water liquid accuse butterfly valve protection switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212909469U true CN212909469U (en) | 2021-04-06 |
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ID=75278718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021120868.2U Active CN212909469U (en) | 2020-06-17 | 2020-06-17 | Circulating water liquid accuse butterfly valve protection switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212909469U (en) |
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2020
- 2020-06-17 CN CN202021120868.2U patent/CN212909469U/en active Active
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