Heteroaxial arrangement type offset detection device for opening and closing degree of valve

Abstract

The utility model discloses a valve opening degree heteroaxial arrangement type offset detection device, and relates to the technical field of valve detection, the valve opening degree heteroaxial arrangement type offset detection device comprises a mounting seat additionally arranged on a valve body in a valve and a magnetic angle sensor additionally arranged on the mounting seat, a transmission sleeve and a driven piece which are meshed with each other are rotatably arranged in the mounting seat, the transmission sleeve is inserted into a valve head of the valve, and the driven piece is inserted into the mounting seat. The valve has the technical advantages that the transmission sleeve and the driven piece are arranged in parallel, so that manual normal screwing is conducted on the valve head, rotation of the driven piece on the side portion of the magnetic angle sensor is detected through the magnetic angle sensor, and the detection accuracy is improved. The opening degree of the valve head is recorded in real time; by additionally arranging the pointer which rotates along with the driven rotating shaft, whether deviation occurs or not can be detected through the scale marks, namely, when the pointer reads out too much deviation and the magnetic angle sensor does not trigger early warning, it is proved that the magnetic angle sensor is damaged and needs to be replaced in time.

Description

Technical Field

[0001] The present application relates to the field of valve detection technology, and in particular to a valve opening and closing degree offset detection device arranged in an off-axis manner. Background Art

[0002] Equipment working in flammable and explosive environments, such as petrochemical, mining, grain processing and other industries, has extremely strict requirements for the explosion-proof performance of control equipment. As an indispensable safety component in such hazardous areas, the design and manufacturing technology of explosion-proof mechanical switches have undergone continuous innovation and optimization to ensure the safety and reliability of operations under extreme conditions. The design focus of traditional explosion-proof mechanical switches is on the robustness of the flameproof casing and the explosion-proof treatment of the internal circuit. However, with the long-term operation of the equipment, mechanical wear has become an issue that cannot be ignored; especially under the action of continuous mechanical stress, the opening and closing action components of the switch will gradually deviate from their original set positions, which not only affects the normal function of the switch, but may also cause problems such as unstable electrical connections and malfunctions of the switch, thereby burying safety hazards and reducing the reliability and safety of the system.

[0003] Faced with the wear problem of mechanical switches caused by long-term use, modern technology tends to use sensor technology to monitor its status in real time, so as to predict the wear trend and prevent failures; the magnetic angle sensor is used to accurately measure the rotation angle of the valve head to determine the open and closed state of the switch and its degree of wear. However, due to operational requirements, personnel need to directly contact and manually operate the valve head, which requires that the installation of the sensor must ensure accurate detection of the valve head while not interfering with normal manual operation. How to achieve obstacle-avoiding installation of the sensor and the valve head has become a technical problem that technicians in this field need to solve; when the magnetic angle sensor fails, it is also necessary to be able to promptly detect the fault through manual inspection. Utility Model Content

[0004] This device provides a valve opening and closing degree offset detection device arranged in different axes, and the specific implementation method is as follows:

[0005] A valve opening and closing degree offset detection device arranged in different axes, characterized by comprising:

[0006] The mounting seat is installed on the valve body of the valve. The mounting seat rotates and has a transmission sleeve and a driven member that mesh with each other. The transmission sleeve is plugged into the valve head of the valve. By twisting the valve head, the driven member is driven to rotate accordingly.

[0007] The magnetic angle sensor installed on the mounting seat has its probe end corresponding to the axial direction of the driven member. The magnetic angle sensor records the opening and closing degree changes of the valve head by detecting the rotation angle of the driven member.

[0008] Based on the above technical solution, the transmission sleeve and the follower are installed in parallel, ensuring that the magnetic angle sensor is installed on the follower near the valve head without interfering with the original manual operation process, so that the slight rotation changes of the follower can be captured and recorded in real time, thereby indirectly reflecting the opening and closing state of the valve head; through continuous monitoring of the opening and closing degree of the valve head, potential wear or abnormal operation can be discovered early, maintenance can be carried out in advance, production interruptions or safety accidents caused by valve failure can be avoided, and the reliability and safety of the system can be improved. Automatic recording of the opening and closing degree reduces the need for manual monitoring and reduces the burden on operators. At the same time, accurate data recording also provides a basis for subsequent analysis and optimization, which helps to improve overall operating efficiency.

[0009] Preferably, the mounting seat is open on one side, and a cover plate is installed on its end face, and the magnetic angle sensor is installed on the cover plate through a mounting bracket; the cover plate includes a plate body, and a second open hole and a first open hole are respectively opened on the plate body at positions corresponding to the axial direction of the valve head and the follower.

[0010] Preferably, the end of the valve head passes through the cover plate through the second open hole.

[0011] Based on the above technical solution, the magnetic angle sensor and the driven part are separated and installed through the cover plate, and the probe end of the magnetic angle sensor detects the driven part through the first open hole; the magnetic angle sensor uses the technology of accurately measuring and monitoring the angular position of the mechanical moving parts by utilizing the change of the magnetic field. When the driven part rotates with the transmission sleeve, the magnetic source installed on the driven part or the part coupled with it also rotates. The magnetic field change generated by this magnetic source will be sensed by the sensor element. The sensor element generates an electrical signal under the action of the magnetic field. The strength or frequency change of the signal is directly related to the direction and strength of the magnetic field, thereby reflecting the rotation angle of the driven part. Through the built-in signal processing circuit, these changes will be converted into angle information to realize continuous and real-time monitoring of the rotation angle.

[0012] Preferably, the mounting seat comprises a cover body and a fixing cylinder arranged inside the cover body, and the inner side of the fixing cylinder is rotatably connected to the transmission sleeve.

[0013] Preferably, a plurality of limit hooks are provided circumferentially on the inner side of the fixed cylinder; annular limit grooves are provided at the upper and lower ends of the transmission sleeve, and the limit hooks are arc structures with a C-shaped cross-section, which are slidably connected to the limit grooves through the upper and lower end barbs.

[0014] Preferably, a positioning plug hole that matches the outer contour of the valve head is axially provided on the inner side of the transmission sleeve.

[0015] Preferably, the driven member includes a driven gear and a driven rotating shaft which are integrally provided, and a transmission gear meshing with the driven gear is provided on the outer side of the transmission sleeve.

[0016] Based on the above technical solution, the driven gear is preferably a fan-shaped structure. The valve head is initially set in the "open" state and is offset from the ideal 0° to 0.1° or 0.5°, while the "closed" state may be offset from 90° to 85°, 89° or 88°, etc., so the fan-shaped opening and closing angle is greater than ninety degrees.

[0017] Preferably, the length of the cover body is greater than that of the valve body, and a pointer is provided on the side of the cover body at one end of the driven shaft; scale lines are provided along the circumferential direction at the bottom of the cover body, and the pointer points to the scale lines.

[0018] Preferably, a plurality of positioning screw holes are provided on the end surface of the valve body, a limiting hole is provided on the bottom of the cover body, and the bolts pass through the limiting holes and are threadedly connected to the positioning screw holes.

[0019] Based on the above technical solutions, by introducing a mechanical visual assisted monitoring system of pointers and scale lines, an intuitive and reliable backup solution is provided for the performance verification and fault diagnosis of magnetic angle sensors; a pointer is added to the original driven shaft so that it rotates synchronously with the rotation of the driven shaft. The pointer is designed to ensure that it can clearly point to or cover the scale lines pre-set on the shell. These scale lines usually mark important angular positions, such as 0° and 90°; the operator can quickly determine whether the rotation angle of the valve head is correct by directly observing the relative position of the pointer and the scale lines. If the angle offset displayed by the pointer exceeds the normal range, when the magnetic angle sensor fails to accurately detect the angle change or issues an erroneous warning due to a fault, the angle indicated by the pointer is inconsistent with the data of the magnetic angle sensor, especially when the sensor does not trigger an early warning, but the mechanical indication clearly shows that the offset is too much, which directly indicates that the magnetic angle sensor may be faulty and needs to be checked or replaced.

[0020] In summary, this application includes the following beneficial technical effects:

[0021] 1. The utility model arranges the transmission sleeve and the driven member in parallel, so that the valve head is manually twisted normally, and the rotation of the driven member on its side is detected by the magnetic angle sensor, thereby realizing the real-time recording of the opening and closing degree of the valve head;

[0022] 2. The utility model has a simple structure. By adding a pointer that rotates with the driven shaft, the scale line can be used to detect whether an offset occurs. That is, when the pointer reads an offset of zero degree or more than ninety degrees and the magnetic angle sensor does not trigger an early warning, it proves that the magnetic angle sensor is damaged and needs to be replaced in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the utility model;

[0024] Figure 2 This is a schematic diagram of the explosion structure of the utility model Figure 1 ;

[0025] Figure 3 It is a cross-sectional view of the front view structure of the utility model;

[0026] Figure 4 This is a schematic diagram of the explosion structure of the utility model Figure 2 ;

[0027] Figure 5 This is a schematic diagram of the structure of the utility model after deformation application Figure 1 ;

[0028] Figure 6 This is a schematic diagram of the structure of the utility model after deformation application Figure 2 .

[0029] Description of reference numerals:

[0030] 1. Valve, 2. Cover plate, 3. Mounting seat, 4. Mounting bracket, 5. Magnetic angle sensor, 6. Transmission sleeve, 7. Follower, 8. Bolt,

[0031] 101. valve body, 102. valve head, 103. positioning screw hole, 201. plate body, 202. first open hole, 203. second open hole, 301. cover body, 302. limiting hook, 303. limiting hole, 304. fixing cylinder, 305. scale line, 601. limiting groove, 602. transmission gear, 603. positioning plug hole, 701. driven gear, 702. driven shaft, 703. pointer. DETAILED DESCRIPTION

[0032] The following describes the specific implementation of the utility model in conjunction with the accompanying drawings and embodiments:

[0033] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them, and are not used to limit the conditions under which the present invention can be implemented. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0034] At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for the convenience of description and are not used to limit the scope of the implementation of the present utility model. Changes or adjustments to their relative relationships should be regarded as the scope of the implementation of the present utility model without substantially changing the technical content.

[0035] The following is combined with Figure 1-6 This application is described in further detail.

[0036] The embodiment of the present application discloses a valve opening and closing degree offset detection device arranged in an off-axis manner.

[0037] Example 1

[0038] Reference Figures 1 to 4 The present embodiment discloses a valve opening and closing degree offset detection device arranged in an off-axis manner, comprising a mounting seat 3 installed on a valve body 101 in a valve 1 and a magnetic angle sensor 5 installed on the mounting seat 3. The mounting seat 3 rotates and has a transmission sleeve 6 and a follower 7 that mesh with each other. The transmission sleeve 6 is plugged into a valve head 102 of the valve 1. By twisting the valve head 102, the follower 7 is driven to rotate accordingly. In the present structure, the probe end of the magnetic angle sensor 5 corresponds to the axial direction of the follower 7. The magnetic angle sensor 5 records the opening and closing degree changes of the valve head 102 by detecting the rotation angle of the follower 7.

[0039] The mounting seat 3 is open on one side, and a cover plate 2 is installed on its end face. The magnetic angle sensor 5 is installed on the cover plate 2 through the mounting bracket 4. In this structure, the cover plate 2 includes a plate body 201, and a first open hole 202 and a second open hole 203 are respectively opened on the plate body 201 at positions corresponding to the valve head 102 and the follower 7 axially.

[0040] The end of the valve head 102 passes through the cover plate 2 through the second open hole 203. The mounting seat 3 includes a cover body 301 and a fixing cylinder 304 arranged on the inner side of the cover body 301. The inner side of the fixing cylinder 304 is rotatably connected to the transmission sleeve 6. In this structure, a plurality of positioning screw holes 103 are provided on the end face of the valve body 101, and a limiting hole 303 is provided at the bottom of the cover body 301. The bolt 8 passes through the limiting hole 303 and is threadedly connected to the positioning screw hole 103.

[0041] A plurality of limit hooks 302 are circumferentially provided on the inner side of the fixed cylinder 304, and annular limit grooves 601 are provided at the upper and lower ends of the transmission sleeve 6. The limit hook 302 is an arc structure with a C-shaped cross-section, and is slidably connected to the limit groove 601 through the upper and lower hooks. A positioning plug hole 603 that matches the outer contour of the valve head 102 is axially provided on the inner side of the transmission sleeve 6. In this structure, the driven member 7 includes an integral driven gear 701 and a driven rotating shaft 702, and a transmission gear 602 meshing with the driven gear 701 is provided on the outer side of the transmission sleeve 6.

[0042] The specific implementation process is: the cover body 301 is installed on the valve body 101 by the bolt 8, at this time the limit groove 601 axially covers the end of the valve head 102, and the length of the valve head 102 is greater than the length of the limit groove 601; the valve head 102 is screwed, the transmission sleeve 6 and the follower 7 rotate accordingly, the magnetic angle sensor 5 detects the end of the follower 7 in real time, and continuously records the opening and closing degree data and transmits the data remotely.

[0043] Example 2

[0044] Reference Figures 5 and 6 Based on the above embodiments, this embodiment also discloses a valve opening and closing degree off-axis arrangement type offset detection device, the length of the cover body 301 is greater than the length of the valve body 101, one end of the driven shaft 702 passes through the cover body 301 and a pointer 703 is provided on the side. In this structure, scale lines 305 are provided along the circumferential direction at the bottom of the cover body 301, and the pointer 703 points to the scale lines 305.

[0045] Many other changes and modifications can be made without departing from the concept and scope of the utility model. It should be understood that the utility model is not limited to a specific embodiment, and the scope of the utility model is defined by the appended claims.

Claims

1. A valve opening and closing degree offset detection device arranged in different axes, characterized in that: include: A mounting seat (3) mounted on a valve body (101) in a valve (1), wherein the mounting seat (3) is rotatable and contains a transmission sleeve (6) and a driven member (7) that mesh with each other, wherein the transmission sleeve (6) is plugged into a valve head (102) of the valve (1), and the driven member (7) is driven to rotate accordingly by twisting the valve head (102); A magnetic angle sensor (5) mounted on the mounting seat (3) has a probe end corresponding to the axial direction of the driven member (7). The magnetic angle sensor (5) records the change in the opening and closing degree of the valve head (102) by detecting the rotation angle of the driven member (7).

2. A valve opening and closing degree offset detection device arranged in different axes according to claim 1, characterized in that: The mounting seat (3) is open on one side, and a cover plate (2) is installed on the end surface thereof, and the magnetic angle sensor (5) is installed on the cover plate (2) via a mounting bracket (4); The cover plate (2) comprises a plate body (201), and a first open hole (202) and a second open hole (203) are respectively provided on the plate body (201) at positions corresponding axially to the valve head (102) and the follower (7).

3. A valve opening and closing degree offset detection device arranged in different axes according to claim 2, characterized in that: The end of the valve head (102) passes through the second open hole (203) and out of the cover plate (2).

4. A valve opening and closing degree offset detection device arranged in different axes according to claim 2, characterized in that: The mounting seat (3) comprises a cover body (301) and a fixing cylinder (304) arranged on the inner side of the cover body (301), and the inner side of the fixing cylinder (304) is rotatably connected to the transmission sleeve (6).

5. A valve opening and closing degree offset detection device arranged in different axes according to claim 4, characterized in that: A plurality of limiting hooks (302) are provided on the inner side of the fixing cylinder (304) along the circumferential direction; The transmission sleeve (6) is provided with an annular limit groove (601) at the upper and lower ends. The limit hook (302) is an arc structure with a C-shaped cross section, and is slidably connected to the limit groove (601) through the barbs at the upper and lower ends.

6. A valve opening and closing degree offset detection device arranged in different axes according to claim 5, characterized in that: A positioning plug-in hole (603) that matches the outer contour of the valve head (102) is axially provided on the inner side of the transmission sleeve (6).

7. A valve opening and closing degree offset detection device arranged in different axes according to claim 6, characterized in that: The driven member (7) comprises a driven gear (701) and a driven rotating shaft (702) which are integrally arranged, and a transmission gear (602) meshing with the driven gear (701) is arranged on the outside of the transmission sleeve (6).

8. The valve opening and closing degree offset detection device according to claim 7 is characterized in that: The length of the cover body (301) is greater than the length of the valve body (101); one end of the driven shaft (702) passes through the cover body (301) and is provided with a pointer (703) on the side thereof; The bottom of the cover body (301) is provided with scale lines (305) along the circumferential direction, and the pointer (703) points to the scale lines (305).

9. The valve opening and closing degree offset detection device according to claim 7, characterized in that: The end surface of the valve body (101) is provided with a plurality of positioning screw holes (103), the bottom of the cover body (301) is provided with a limiting hole (303), and the bolt (8) passes through the limiting hole (303) and is threadedly connected to the positioning screw hole (103).

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