Valve opening degree detection device

Abstract

The invention provides a valve opening degree detection device, which comprises a transmission assembly and an opening degree indicating dial, and is characterized in that the transmission assembly comprises an indicating part and a transmission part, the indicating part is connected with the transmission part, and the indicating part can move along the extension direction of the transmission part; the transmission component is connected with a valve servomotor synchronizing device, so that the transmission component rotates along with the rotation of the valve servomotor synchronizing device, the extension direction of the opening indicating dial is consistent with the extension direction of the transmission component, the opening indicating dial is provided with an opening mark, the indicating component corresponds to the opening mark, and the opening mark corresponds to the opening indicating dial. And a numerical value on the opening indicating dial represents the opening of the valve. The valve opening degree detection device has the advantages of being simple in structure and high in detection accuracy.

Description

Technical Field

[0001] The present invention relates to the field of valve operation and maintenance technology, and in particular to a valve opening detection device. Background Art

[0002] Large-scale hydro-turbine generators are equipped with cylinder valves in the water machine room as the water inlet valve of the turbine. They are installed between the fixed guide vanes and the movable guide vanes and can be used as the main valve of the unit. When shutting down, the cylinder valve is dropped to reduce the leakage of the guide vanes. It is used to cut off the water flow in case of accidents and is also used for emergency shutdown in accidents.

[0003] In the related art, the cylinder valve system of a hydropower station is usually equipped with an electrical encoder for detecting the opening, but the opening is only monitored by the electrical encoder, and the measurement path is single. When the encoder fails, the opening of the cylinder valve is lost for monitoring, and it will be impossible to accurately judge the information such as the cylinder valve opening. If the measuring device is inaccurate, it will be impossible to judge whether the cylinder valve is fully open or fully closed, which may easily bring safety hazards to the operation of the equipment. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] To this end, an embodiment of the present invention provides a valve opening detection device, which has the advantages of simple structure and high detection accuracy.

[0006] The valve opening detection device according to an embodiment of the present invention comprises:

[0007] A transmission assembly, the transmission assembly comprising an indicating component and a transmission component, the indicating component is connected to the transmission component and the indicating component is movable along the extension direction of the transmission component, the transmission component is connected to the valve servo synchronizing device so that the transmission component rotates with the rotation of the valve servo synchronizing device;

[0008] An opening indicator disk, the extension direction of which is consistent with the extension direction of the transmission component, an opening mark is provided on the opening indicator disk, the indicating component corresponds to the opening mark, and the value on the opening indicator disk represents the opening of the valve.

[0009] The valve opening detection device of the embodiment of the present invention connects the valve to the opening indicator disk through the transmission assembly, so that the current opening of the valve is intuitively displayed through the numerical value and mark on the opening indicator disk, which is convenient for the operator to quickly understand and judge. In addition, the opening indicator disk can be easily calibrated as needed to ensure the accuracy of the indication.

[0010] In some embodiments, the valve opening detection device of the embodiment of the present invention also includes a stroke control component, which is arranged adjacent to the opening indicator disk, and the stroke control component includes a first stroke switch and a second stroke switch, the first stroke switch corresponds to the fully closed opening mark of the opening indicator disk, and the second stroke switch corresponds to the fully open opening mark of the opening indicator disk, at least a portion of the indicating component is in contact with one of the first stroke switch and the second stroke switch, and the stroke control component sends a feedback signal.

[0011] In some embodiments, there are a plurality of the second travel switches, and the plurality of the second travel switches are arranged at intervals in a direction orthogonal to an extension direction of the transmission assembly.

[0012] In some embodiments, the transmission component includes a connecting member and a transmission member, the connecting member is connected to the valve servo synchronization device, and the indicating component is connected to the transmission member.

[0013] In some embodiments, the connecting member is connected to the valve servo synchronization device via a connecting rod, and the indicating component is connected to the transmission member via a thread.

[0014] In some embodiments, the transmission component further includes a first bearing support and a second bearing support, wherein the first bearing support is connected to the first end of the transmission component, and the second bearing support is connected to the second end of the transmission component.

[0015] In some embodiments, the indicating component includes a connecting portion and an indicating portion, the connecting portion is connected to the rotating member and is located between the first bearing support and the second bearing support in the extension direction of the transmission assembly, and the indicating portion extends in a direction away from the connecting portion and points to the opening indicating disk.

[0016] In some embodiments, the valve opening detection device of the embodiment of the present invention also includes a guide member, which is connected to the opening indicator disk, the extension direction of the guide member is consistent with the extension direction of the opening indicator disk and is located on the side of the opening indicator disk adjacent to the transmission assembly, the indicating part is connected to the guide member, and the indicating part is movable relative to the guide member along the extension direction of the guide member.

[0017] In some embodiments, the valve opening detection device of the embodiment of the present invention also includes an early warning component, which includes a first detection part and a second detection part, the first detection part is connected to the indicating part and is located on the side of the indicating part adjacent to the opening indicating disk, the second detection part is connected to the opening indicating disk, there are multiple second detection parts, and the multiple second detection parts are arranged at intervals along the extension direction of the opening indicating disk, the first detection part is adjacent to the second detection part, and the early warning component sends a warning signal.

[0018] In some embodiments, the valve opening detection device of the embodiment of the present invention also includes a limit assembly, which is connected to the guide member, and the limit assembly includes a first limit member and a second limit member, the first limit member is connected to the first end of the guide member, and the first limit member is located below the fully closed opening mark in the extension direction of the opening indicator disk, and the second limit member is connected to the second end of the guide member, and the second limit member is located above the fully open opening mark in the extension direction of the opening indicator disk. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the structure of the valve opening detection device according to the embodiment of the present invention.

[0020] Figure 2 yes Figure 1 An enlarged schematic diagram of A is shown in FIG.

[0021] Reference numerals:

[0022] 1. Transmission assembly, 11. Indicator component, 111. Connecting part, 112. Indicator component, 12. Transmission component, 121. Connecting part, 122. Transmission part, 123. First bearing support, 124. Second bearing support,

[0023] 2. Opening indicator plate, 21. Opening mark,

[0024] 3. Travel control component, 31. First travel switch, 32. Second travel switch,

[0025] 4. Guide parts,

[0026] 5. Early warning component, 51. First detection unit, 52. Second detection unit,

[0027] 6. Limiting assembly, 61. First limiting member, 62. Second limiting member, 63. Elastic member. DETAILED DESCRIPTION

[0028] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0029] like Figure 1 and Figure 2 As shown, the valve opening detection device according to the embodiment of the present invention comprises: a transmission assembly 1 and an opening indicator plate 2.

[0030] The transmission assembly 1 includes an indicating component 11 and a transmission component 12. The indicating component 11 is connected to the transmission component 12 and is movable along the extension direction of the transmission component 12. The transmission component 12 is connected to the valve servo synchronization device so that the transmission component 12 rotates with the rotation of the valve servo synchronization device. The extension direction of the opening indicator disk 2 is consistent with the extension direction of the transmission component 12. The opening indicator disk 2 is provided with an opening mark 21. The indicating component 11 corresponds to the opening mark 21. The value on the opening indicator disk 2 represents the opening of the valve.

[0031] Specifically, Figure 1 and Figure 2 As shown, the extension direction of the transmission component 12 is consistent with the up-down direction, and the indicating component 11 is movable relative to the rotating component in the up-down direction. The transmission component 12 is connected to the relay synchronization device of the valve, ensuring that the transmission component 12 can follow the action of the relay synchronization device and then synchronize with the movement of the valve. The indicating component 11 is connected to the transmission component 12 and can move in the extension direction of the transmission component 12. Then when the transmission component 12 moves with the opening and closing of the valve, the indicating component 11 will also move accordingly. Therefore, the opening size of the valve is read according to the indicating component 11 pointing to the opening mark 21 on the opening indicator disk 2.

[0032] Optionally, the valve opening detection device of the embodiment of the present invention can also be combined with an electrical quantity encoder, that is, the transmission component 1 provides another independent monitoring means, which increases the redundancy of the valve opening monitoring. In other words, through the transmission component 1, even if the electrical quantity encoder fails, the actual valve opening can be monitored mechanically, thereby improving the reliability of the system.

[0033] In other words, the valve opening detection device of the embodiment of the present invention connects the valve to the opening indicator disk 2 through the transmission assembly 1, so that the current opening of the valve is intuitively displayed through the numerical value and mark on the opening indicator disk 2, which is convenient for the operator to quickly understand and judge. In addition, the opening indicator disk 2 can be easily calibrated as needed to ensure the accuracy of the indication.

[0034] In some embodiments, the valve opening detection device of the embodiment of the present invention also includes a stroke control component 3, which is arranged adjacent to the opening indicator disk 2. The stroke control component 3 includes a first stroke switch 31 and a second stroke switch 32. The first stroke switch 31 corresponds to the fully closed opening mark 21 of the opening indicator disk 2, and the second stroke switch 32 corresponds to the fully open opening mark 21 of the opening indicator disk 2. At least a portion of the indicating component 11 contacts one of the first stroke switch 31 and the second stroke switch 32, and the stroke control component 3 sends a feedback signal.

[0035] Specifically, Figure 1 and Figure 2 As shown, the stroke control assembly 3 is arranged adjacent to the opening indicator plate 2 to ensure that the stroke control assembly 3 can accurately correspond to the fully closed and fully opened opening marks 21 on the opening indicator plate 2. The stroke control assembly 3 includes two stroke switches, namely a first stroke switch 31 and a second stroke switch 32. The first stroke switch 31 is located below the indicating component 11, and the second stroke switch 32 is located above the indicating component 11.

[0036] The first travel switch 31 corresponds to the fully closed opening mark 21 on the opening indicator disk 2 (i.e., the opening is 0%). When the indicating component 11 moves to the fully closed position, the first travel switch 31 will be triggered; the second travel switch 32 corresponds to the fully open opening mark 21 on the opening indicator disk 2 (i.e., the opening is 100%). When the indicating component 11 moves to the fully open position, the second travel switch 32 will be triggered.

[0037] That is to say, when the indicating component 11 moves downward and the lower part of the indicating component 11 contacts the first stroke switch 31, the stroke control component 3 will send a full-close signal and feed back to the valve monitoring system; similarly, when the indicating component 11 moves upward and the upper part of the indicating component 11 contacts the second stroke switch 32, the stroke control component 3 will send a full-open signal and feed back to the valve monitoring system.

[0038] Therefore, the setting of the travel switch of the valve opening detection device in the embodiment of the present invention can ensure that when the valve reaches the fully open or fully closed position, the system can receive a clear feedback signal, thereby accurately locating the opening state of the valve. And through the feedback signal of the travel switch, the system can monitor the movement state of the valve in real time to prevent the valve from exceeding the preset safety range, thereby protecting the equipment from damage. The feedback signal of the travel switch can be used in an automated control system to achieve automatic opening and closing control of the valve, thereby improving the automation level and efficiency of the operation. In addition, when the travel switch is not triggered as expected, the system may believe that there may be a problem with the opening state of the valve, thereby triggering a fault warning mechanism to remind the operator to perform inspections and maintenance.

[0039] Preferably, there are a plurality of second travel switches 32, and the plurality of second travel switches 32 are arranged at intervals in a direction orthogonal to the extension direction of the transmission assembly 1. It is understandable that Figure 1 and Figure 2 As shown, the extension direction of the transmission assembly 1 is consistent with the left-right direction, and a plurality of second travel switches 32 are sequentially arranged at intervals along the left-right direction. Thus, by providing a plurality of second travel switches 32, the detection accuracy of the valve opening of the system can be improved.

[0040] Optionally, there may be multiple first travel switches 31 .

[0041] In some embodiments, the transmission component 12 includes a connecting member 121 and a transmission member 122 , the connecting member 121 is connected to the valve servo synchronization device, and the indicating component 11 is connected to the transmission member 122 .

[0042] Specifically, Figure 1 and Figure 2 As shown, the connecting member 121 is connected to the upper end of the transmission member 122 and is connected to the valve servo synchronization device, the indicating component 11 is connected to the transmission member 122, and the indicating component 11 can move in the up-down direction relative to the transmission member 12. In other words, the connecting member 121 is connected to the valve servo synchronization device, so that the rotation of the valve can drive the connecting member 121 to rotate, and the rotation of the connecting member 121 drives the transmission member 122 to rotate, so that the indicating component 11 moves in the up-down direction on the transmission member 122.

[0043] Optionally, the connecting member 121 , the transmission member 122 and the indicating component 11 may be connected by means of a gear rack drive, a screw drive, a synchronous belt drive, a chain drive and a spiral drive to achieve the movement function of the indicating component 11 .

[0044] In some embodiments, the connecting member 121 is connected to the valve servo synchronization device via a connecting rod, and the indicating component 11 is connected to the transmission member 122 via threads.

[0045] It is understandable that if Figure 1 and Figure 2 As shown, the connecting member 121 is a sprocket, and the connecting member 121 is connected to the valve relay synchronization device through a chain, so that the rotation of the valve drives the connecting member 121 to rotate through the chain transmission, and the rotation of the connecting member 121 drives the transmission member 122 to rotate. Since the indicating component 11 is connected to the transmission member 122 through a thread, the indicating component 11 can move in the up and down directions on the transmission member 122.

[0046] That is to say, the transmission member 122 and the indicating component 11 can be connected by linear transmission, that is, the transmission member 122 and the indicating component 11 form a linear module, so that the rotation of the transmission member 122 can move the indicating component 11 in the up and down direction.

[0047] In some embodiments, the transmission component 12 further includes a first bearing support 123 and a second bearing support 124 , the first bearing support 123 is connected to the first end of the transmission member 122 , and the second bearing support 124 is connected to the second end of the transmission member 122 .

[0048] Specifically, Figure 1 and Figure 2 As shown, the first bearing support 123 is located below the second bearing support 124, the first bearing support 123 is connected to the lower end of the transmission member 122 (i.e., the first end of the transmission member 122), and the second bearing support 124 is connected to the upper end of the transmission member 122. In other words, the transmission member 122 is connected to the first bearing support 123 and the second bearing support 124 through the bearing member, which provides a stable support for the transmission member 122, so that the transmission member 122 will not shake or deviate during the movement, thereby ensuring the accuracy of the movement. The bearing support usually contains a bearing inside to reduce the friction between the transmission member 122 and the support, reduce wear, and improve transmission efficiency. In addition, the bearing support can also ensure the precise movement of the transmission member 122.

[0049] In some embodiments, the indicating component 11 includes a connecting portion 111 and an indicating portion 112, the connecting portion 111 is connected to the rotating member and is located between the first bearing support 123 and the second bearing support 124 in the extension direction of the transmission assembly 1, and the indicating portion 112 extends in a direction away from the connecting portion 111 and points to the opening indicating disk 2.

[0050] It can be understood that the connecting portion 111 is connected to the rotating member, which is the part responsible for rotation in the transmission assembly 1, such as a gear, a lead screw, etc. The connecting portion 111 is located between the first bearing support 123 and the second bearing support 124, and the bearing support provides support for the transmission member 122 to ensure that the connecting portion 111 can stably move between the first bearing support 123 and the second bearing support 124.

[0051] The indicating portion 112 is an extension of the connecting portion 111, and the indicating portion 112 extends toward the opening indicating disk 2. The indicating portion 112 is a portion that can intuitively display or indicate the valve opening. When the indicating portion 112 points to the scale of the opening indicating disk 2, the valve opening size can be intuitively displayed.

[0052] In some embodiments, the valve opening detection device of the embodiment of the present invention also includes a guide member 4, which is connected to the opening indicator disk 2, the extension direction of the guide member 4 is consistent with the extension direction of the opening indicator disk 2 and is located on the side of the opening indicator disk 2 adjacent to the transmission assembly 1, the indicating part 112 is connected to the guide member 4, and the indicating part 112 is movable relative to the guide member 4 along the extension direction of the guide member 4.

[0053] It is understandable that if Figure 1 and Figure 2 As shown, the upper and lower ends of the guide member 4 are respectively connected to the opening indicator plate 2, and the extending direction thereof is consistent with the extending direction of the opening indicator plate 2. The guide member 4 is usually located on the side of the opening indicator plate 2 adjacent to the transmission assembly 1, so as to ensure that the movement of the indicator portion 112 is synchronized with the movement of the transmission assembly 1. The indicator portion 112 is connected to the guide member 4 and can move relative to the guide member 4 in the extending direction of the guide member 4. The indicator portion 112 moves smoothly along the guide member 4 under the drive of the transmission assembly 1.

[0054] That is, the design of the guide member 4 ensures that the indicating portion 112 maintains the correct direction during movement, avoiding deviation due to external interference or error. The guide member 4 limits the movement trajectory of the indicating portion 112, thereby improving the accuracy of the movement of the indicating portion 112 on the opening indicator plate 2. The guide member 4 can also serve as a sliding surface or a rolling surface to reduce friction and wear of the indicating portion 112 during movement and extend its service life.

[0055] In some embodiments, the valve opening detection device of the embodiment of the present invention also includes an early warning component 5, which includes a first detection part 51 and a second detection part 52. The first detection part 51 is connected to the indicating part 112 and is located on the side of the indicating part 112 adjacent to the opening indicating disk 2. The second detection part 52 is connected to the opening indicating disk 2. There are multiple second detection parts 52, and the multiple second detection parts 52 are arranged at intervals along the extension direction of the opening indicating disk 2. The first detection part 51 is adjacent to the second detection part 52, and the early warning component 5 sends a warning signal.

[0056] It is understandable that the first detection part 51 is connected to the indicator part 112 and is located on the side of the indicator part 112 adjacent to the opening indicator disk 2. The function of the first detection part 51 is to detect the position of the indicator part 112, and is usually used to determine whether the indicator part 112 has reached a preset limit position or an abnormal position. The second detection part 52 is connected to the opening indicator disk 2 and is a plurality of detection parts. These detection parts are arranged at intervals along the extension direction of the opening indicator disk 2, and are used to detect specific positions on the opening indicator disk 2 (such as being arranged adjacent to the fully open value or the fully closed value). The early warning component 5 integrates the signals of the first detection part 51 and the second detection part 52. When an abnormal situation is detected, the early warning component 5 will send a warning signal.

[0057] That is to say, during the movement of the indicating component 11, when the indicating component 11 is about to approach the fully open value or the fully closed value on the opening indicating disk 2, the first detecting part 51 will interact with the corresponding second detecting part 52, and transmit the interactive signal to the early warning component 5. Then, the early warning component 5 can issue an early warning signal to remind the operator that the valve is about to be fully opened or fully closed, and then can issue a warning in time when the valve opening is abnormal or the equipment fails, thereby enhancing the safety of the system.

[0058] In some embodiments, the valve opening detection device of the embodiment of the present invention also includes a limit assembly 6, which is connected to the guide member 4. The limit assembly 6 includes a first limit assembly 61 and a second limit assembly 62. The first limit assembly 61 is connected to the first end of the guide member 4, and the first limit assembly 61 is located below the fully closed opening mark 21 in the extension direction of the opening indicator disk 2, and the second limit assembly 62 is connected to the second end of the guide member 4, and the second limit assembly 62 is located above the fully open opening mark 21 in the extension direction of the opening indicator disk 2.

[0059] The limiter assembly 6 is connected to the guide member 4 and is located at both ends of the guide member 4. The first limiter 61 is connected to the first end (lower end) of the guide member 4, and is located below the fully closed opening mark 21 in the extending direction of the opening indicator plate 2. When the indicating component 11 reaches the fully closed position, the first limiter 61 prevents the indicating component 11 from moving further, thus playing a limiting role.

[0060] The second stopper 62 is connected to the second end (upper end) of the guide member 4, and is located above the fully open opening mark 21 in the extending direction of the opening indicator plate 2. When the indicating member 11 reaches the fully open position, the second stopper 62 prevents the indicating member 11 from moving further, thus playing a limiting role.

[0061] That is, the limit assembly 6 can prevent the indicating component 11 from exceeding the predetermined opening range, thereby avoiding equipment damage or accidents caused by excessive or insufficient opening. By accurately setting the positions of the first limit member 61 and the second limit member 62, it can be ensured that the indicating component 11 can be accurately positioned when it is fully closed or fully open.

[0062] In addition, preferably, the limit assembly 6 also includes an elastic member 63, the first limit member 61 and the second limit member 62 are both mounted on the guide member 4, and the elastic member 63 is connected between the first limit member 61 and the lower end of the guide member 4, and the elastic member 63 is also connected between the second guide member 4 and the upper end of the guide member 4, so as to prevent the indicating member 11 from being squeezed and causing itself to deform or break when the indicating member 11 moves to a value exceeding the fully open or fully closed value.

[0063] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0064] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0065] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0066] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0067] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0068] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A valve opening detection device, characterized in that: include: A transmission assembly, the transmission assembly comprising an indicating component and a transmission component, the indicating component is connected to the transmission component and the indicating component is movable along the extension direction of the transmission component, the transmission component is connected to the valve servo synchronizing device so that the transmission component rotates with the rotation of the valve servo synchronizing device; An opening indicator disk, the extension direction of which is consistent with the extension direction of the transmission component, an opening mark is provided on the opening indicator disk, the indicating component corresponds to the opening mark, and the value on the opening indicator disk represents the opening of the valve.

2. The valve opening detection device according to claim 1, characterized in that: It also includes a stroke control component, which is arranged adjacent to the opening indicator disk. The stroke control component includes a first stroke switch and a second stroke switch. The first stroke switch corresponds to the fully closed opening mark of the opening indicator disk, and the second stroke switch corresponds to the fully open opening mark of the opening indicator disk. At least a portion of the indicating component contacts one of the first stroke switch and the second stroke switch, and the stroke control component sends a feedback signal.

3. The valve opening detection device according to claim 2, characterized in that: There are a plurality of the second travel switches, and the plurality of the second travel switches are arranged at intervals in a direction orthogonal to the extension direction of the transmission assembly.

4. The valve opening detection device according to claim 3, characterized in that: The transmission component comprises a connecting member and a transmission member, the connecting member is connected to the valve servo synchronization device, and the indicating member is connected to the transmission member.

5. The valve opening detection device according to claim 4, characterized in that: The connecting member is connected to the valve servo synchronizing device via a connecting strip, and the indicating component is connected to the transmission member via a thread.

6. The valve opening detection device according to claim 5, characterized in that: The transmission component further includes a first bearing support and a second bearing support, wherein the first bearing support is connected to a first end of the transmission component, and the second bearing support is connected to a second end of the transmission component.

7. The valve opening detection device according to claim 6, characterized in that: The indicating component includes a connecting portion and an indicating portion, wherein the connecting portion is connected to the rotating member and is located between the first bearing support and the second bearing support in the extension direction of the transmission assembly, and the indicating portion extends in a direction away from the connecting portion and points to the opening indicating disk.

8. The valve opening detection device according to claim 7, characterized in that: It also includes a guide member, which is connected to the opening indicator disk. The extension direction of the guide member is consistent with the extension direction of the opening indicator disk and is located on the side of the opening indicator disk adjacent to the transmission assembly. The indicating part is connected to the guide member, and the indicating part is movable relative to the guide member along the extension direction of the guide member.

9. The valve opening detection device according to claim 8, characterized in that: It also includes an early warning component, which includes a first detection part and a second detection part. The first detection part is connected to the indicating part and is located on the side of the indicating part adjacent to the opening indicating disk. The second detection part is connected to the opening indicating disk. There are multiple second detection parts, and the multiple second detection parts are arranged at intervals along the extension direction of the opening indicating disk. The first detection part is adjacent to the second detection part, and the early warning component sends a warning signal.

10. The valve opening detection device according to claim 9, characterized in that: It also includes a limit assembly, which is connected to the guide member, and the limit assembly includes a first limit assembly and a second limit assembly, the first limit assembly is connected to the first end of the guide member, and the first limit assembly is located below the fully closed opening mark in the extension direction of the opening indicator disk, and the second limit assembly is connected to the second end of the guide member, and the second limit assembly is located above the fully open opening mark in the extension direction of the opening indicator disk.

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