Hydro-electric generating set Wiegand rotating speed sensor and use method thereof

Abstract

The hydroelectric generating set Wiegand rotating speed sensor comprises an outer cylinder and an inner cylinder, a positioning table is arranged in the outer cylinder, a linkage table is arranged on the back of the positioning table in parallel, and a transmission port is formed in the inner edge of the lower portion of the outer cylinder; a transmission line is butted in the inner cylinder; a blocking table is arranged on the circumferential face of the inner cylinder, a fourth trapezoidal table is embedded in the circumferential face of the lower portion of the blocking table, a hollow cylinder is hooped to the circumferential face of the lower portion of the inner cylinder, and a blocking disc is hooped outside the hollow cylinder. An O-shaped pad II is arranged on the inner edge of the positioning table, and a linkage module I matched with the linkage table is arranged at the position where the O-shaped pad II is located; an O-shaped soft pad is arranged on the upper surface of the blocking disc, the upper portion of the O-shaped soft pad is in butt joint with the back of the blocking table, a third O-shaped pad is arranged on the circumferential face of the blocking disc, and a second linkage module used for being matched with the inner cylinder is arranged on the blocking disc and located in the O-shaped soft pad. Therefore, the blocking effect of the electrical connection part is enhanced, the influence of water vapor is effectively prevented, and the stability of electrical connection is further improved.

Description

Technical Field

[0001] The invention belongs to the technical field of speed measurement of a hydroelectric generator set, and in particular relates to a Wiegand speed sensor for a hydroelectric generator set and a use method thereof. Background Art

[0002] The Wiegand speed sensor in a hydroelectric generator set is a passive magnetic sensor designed based on the Wiegand effect. It can generate a series of high-amplitude, sharp and regular electrical pulse signals under the action of an external alternating magnetic field, thereby achieving accurate measurement of the speed.

[0003] However, in actual application, the signal transmission position of the Wiegand speed sensor is assembled, and the application environment of the Wiegand speed sensor is relatively harsh. After assembly, its sealing effect is poor and it is easily affected by water vapor, causing a short circuit in its signal electrical connection, affecting the accuracy of the detection results. In addition, the operation steps during maintenance and assembly are relatively cumbersome, affecting the maintenance and assembly efficiency. Summary of the Invention

[0004] In order to solve the above technical problems, the purpose of the present invention is to provide a Wiegand speed sensor for a hydroelectric generator set and a method of use. After assembly, this sensor enhances the blocking effect of the electrical connection, effectively prevents the influence of water vapor, and thereby improves the stability of the electrical connection; moreover, this sensor is easy to assemble and can effectively improve the overall assembly efficiency.

[0005] To solve the above technical problems, the present invention adopts a technical solution: a Wiegand speed sensor for a hydroelectric generator set, comprising an outer cylinder and an inner cylinder, wherein an inner edge of the opening of the outer cylinder facing the inner cylinder is reserved with an axially arranged guide groove and a limiting groove; A positioning platform is installed in the outer tube, and a linkage platform is installed parallel to the back of the positioning platform. The linkage platform can reciprocate and retract to change its position. A transmission port is installed on the inner edge of the lower part of the outer tube. A transmission line is connected to the inner tube, and a receiving port is installed at the position where the transmission line extends out from the lower part of the inner tube; A baffle is installed on the circumference of the inner cylinder, and a trapezoidal platform 4 is embedded in the circumference below the baffle. An elastic member 1 is installed on one end of the trapezoidal platform 4 embedded in the baffle. A hollow cylinder is connected to the circumference of the lower part of the inner cylinder, and a baffle is installed on the outer hoop of the hollow cylinder. An O-shaped pad 2 is installed on the inner edge of the positioning platform, and a linkage module 1 for cooperating with the linkage platform is installed at the position of the O-shaped pad 2; An O-shaped soft pad is installed on the upper surface of the baffle, and the upper part of the O-shaped soft pad is connected to the back of the baffle. An O-shaped pad three is installed on the circumference of the baffle, and a linkage module two for cooperating with the inner cylinder is installed on the baffle and inside the O-shaped soft pad.

[0006] Preferably, the guide groove is arranged along the axial direction of the inner wall of the outer cylinder, and a radially arranged limiting groove is provided at the end of the guide groove. The guide groove and the limiting groove are connected, and the limiting groove is located close to the opening of the outer cylinder. An O-shaped gasket is installed on the outer surface of the outer cylinder facing the opening of the inner cylinder.

[0007] Preferably, the elastic member 1 is arranged in a mounting hole on the outer circumference of the stop platform, and the elastic member 1 is used to restore the trapezoidal platform 4 to its initial state after no force is applied; The trapezoidal platform 4 cooperates with the guide channel and the limiting channel; An O-shaped groove one is milled on the upper peripheral surface of the outer cylinder, the O-shaped groove one is communicated with the limiting groove, and the O-shaped cylinder one is movably connected in the O-shaped groove one.

[0008] Preferably, the linkage module 1 includes an O-shaped groove 2, a vertical groove 1, an outer vertical frame and an inner vertical frame. The O-shaped groove 2 is reserved at the inner edge of the positioning platform, and the vertical groove 1 is reserved in the middle of the positioning platform. The vertical groove 1 is connected to the O-shaped groove 2, and the vertical groove 1 is milled at equal angles.

[0009] Preferably, the linkage module 2 includes an O-shaped groove 3, a vertical groove 2 and an L-rod. The O-shaped groove 3 is milled on the circumferential surface of the baffle, the O-shaped pad 3 is installed in the O-shaped groove 3, and the vertical groove 2 is milled on the inner edge of the O-shaped groove 3. There are several vertical grooves 2. The L-rod is movably installed in the vertical groove 2. A connecting frame is movably installed on the part of the L-rod outside the baffle, and the other part of the connecting frame is movably docked with the circumferential surface of the inner cylinder.

[0010] Preferably, the upper part of the baffle is an extension part, the size of the extension part of the baffle matches the outer size of the outer tube, and the size of the lower part of the baffle matches the inner edge size of the outer tube; the peripheral contour of the hollow tube is flush with the peripheral contour of the inner tube, and there is an elastic part four at the upper part of the hollow tube.

[0011] Preferably, a receiving channel is milled on one side of the O-shaped groove 1 close to the limiting groove, and a trapezoidal platform 1 is installed on the inner edge of the O-shaped cylinder 1, and the trapezoidal platform 1 is movably located in the receiving channel.

[0012] Preferably, the outer vertical frame is telescopically installed in the vertical groove 1, the inner vertical frame is movably installed at the end of the outer vertical frame facing the inner tube, and the inner vertical frame is provided with an elastic member 2 at one end of the outer vertical frame, and the inner vertical frame is docked with the O-shaped pad 2.

[0013] Preferably, a trapezoidal platform 2 is installed at the portion of the outer vertical frame facing the outer cylinder, a linkage channel is milled on the back of the positioning platform, a trapezoidal platform 3 is telescopically installed in the linkage channel, the back of the trapezoidal platform 3 is docked to the linkage platform through a bracket, and the trapezoidal platform 3 touches the slope of the trapezoidal platform 2.

[0014] Preferably, a third elastic member is installed on the back of the positioning platform, the third elastic member is connected to the linkage platform, and a communication channel is reserved on the linkage platform.

[0015] Preferably, in another aspect, a method for using a Wiegand speed sensor of a hydroelectric generator set is provided, comprising the following steps: After the inner cylinder is assembled to the outer cylinder, the shape feature of the trapezoidal platform 4 can prevent the baffle from separating from the outer cylinder. When the retaining platform is embedded in the outer cylinder, the lower part of the inner cylinder touches the linkage platform, and the linkage platform is operated in a linkage manner. Under the action of the bracket, the linkage platform links the trapezoidal platform three to change its position in the linkage channel. Under the characteristics of the slope, the trapezoidal platform three links the trapezoidal platform two and the outer vertical frame to change its position along the vertical groove one. At this time, the gaseous medium in the vertical groove one is applied to the position of the O-shaped groove two. Under the dual action of the inner vertical frame and the gaseous medium, the O-shaped pad two is pushed toward the position of the hollow cylinder. At the same time, in cooperation with the elastic member two, the hollow cylinder can not change its position. After the position of the hollow cylinder does not change, as the inner cylinder is continuously inserted, the L-rod will move toward the position of the O-shaped gasket three under the action of the connecting frame. During this process, the L-rod will transport the gaseous medium in the vertical groove two to the O-shaped groove three. At this time, the O-shaped gasket three moves toward the inner edge of the outer cylinder, thereby blocking the space between the outer cylinder and the baffle.

[0016] The present invention has the following beneficial effects: 1. The Wiegand speed sensor of the present invention is configured such that when the stopper is embedded in the outer cylinder, the lower portion of the inner cylinder contacts the linkage platform. Under the action of the bracket, the linkage platform links the trapezoidal platform 3 to change its position in the linkage channel. The trapezoidal platform 3 links the trapezoidal platform 2 and the outer vertical frame. The gaseous medium in the vertical channel 1 and the inner vertical frame itself act on the O-type pad 2, so that the space between the positioning platform and the hollow cylinder can be blocked, thereby preventing the moisture in the application environment from affecting the stable performance of the electrical connection.

[0017] 2. The Wiegand speed sensor of the present invention utilizes the inner vertical frame and elastic member 2 to prevent the hollow cylinder from changing position. The inner cylinder remains embedded. Under the action of the connecting frame, the L-rod moves toward the position of the O-shaped gasket 3. During this process, the L-rod transfers the gaseous medium in the second vertical channel into the third O-shaped channel. At this time, the third O-shaped gasket moves toward the inner edge of the outer cylinder, thereby blocking the space between the outer cylinder and the baffle. This strengthens the blocking effect at the electrical connection and improves the stability of the electrical connection.

[0018] 3. The Wiegand speed sensor of the present invention has a guide groove, a limiting groove and a trapezoidal platform, so that the stop platform is not easily deviated during assembly, thereby improving the overall assembly efficiency.

[0019] 4. The Wiegand speed sensor of the present invention rotates the O-type cylinder 1, and the trapezoidal platform 1 will act on the trapezoidal platform 4 in the limited groove. At this time, the acting parts between the baffle and the outer cylinder cannot function. At this time, the baffle can be pulled out, thereby improving the overall maintenance and disassembly efficiency.

[0020] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present invention. The purposes and other advantages of the present invention can be realized and obtained through the structures particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be derived from these drawings without inventive work. Among them: Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 It is a half-cut schematic diagram of the present invention.

[0023] Figure 3 The present invention is based on Figure 2 Schematic diagram of the unassembled platform.

[0024] Figure 4 Schematic diagram of the baffle of the present invention.

[0025] Figure 5 The present invention is based on Figure 4 Cutaway diagram.

[0026] Figure 6 It is a schematic cross-sectional view of an O-type cylinder of the present invention.

[0027] Figure 7 The present invention is based on Figure 3 Partial schematic diagram.

[0028] In the figure: 100, outer cylinder; 101, guide groove; 102, limiting groove; 103, O-shaped pad 1; 104, O-shaped groove 1; 105, O-shaped cylinder 1; 106, storage channel; 107, trapezoidal platform 1; 108, positioning platform; 109, O-shaped groove 2; 110, vertical groove 1; 111, O-shaped pad 2; 112, outer vertical frame; 113, inner vertical frame; 114, trapezoidal platform 2; 1 15. Trapezoidal platform three; 116. Linkage platform; 117. Elastic part three; 118. Transmission port; 119. Inner cylinder; 120. Baffle; 121. Trapezoidal platform four; 122. Hollow cylinder; 123. Baffle; 124. O-type groove three; 125. Vertical groove two; 126. O-type pad three; 127. L-rod; 128. Connecting frame; 129. O-type flexible pad; 130. Transmission line; 131. Receiving port. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0031] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it constitute a separate or selective embodiment that is mutually exclusive with other embodiments.

[0032] Furthermore, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, when describing the embodiments of the present invention, cross-sectional views illustrating device structures may be partially enlarged and not to scale. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, the three-dimensional dimensions of length, width, and depth should be included.

[0033] Example 1: See also Figure 1 , a hydroelectric generator set Wiegand speed sensor, comprising the following steps: referring to Figures 1 to 3, includes an outer cylinder 100 and an inner cylinder 119. A guide groove 101 and a limiting groove 102 are reserved on the inner edge of the opening of the outer cylinder 100 facing the inner cylinder 119. The guide groove 101 is connected to the limiting groove 102. The limiting groove 102 is located close to the opening of the outer cylinder 100. An O-shaped gasket 103 is installed on the outer surface of the outer cylinder 100 facing the opening of the inner cylinder 119.

[0034] Reference Figure 2 、 3 As shown in FIG7 , a positioning platform 108 is installed in the outer cylinder 100 , an O-shaped pad 111 is installed on the inner edge of the positioning platform 108 , a linkage platform 116 is installed parallel to the back of the positioning platform 108 , and the linkage platform 116 can reciprocate and retract to change its position, and a transmission port 118 is installed on the inner edge of the lower part of the outer cylinder 100 .

[0035] Reference Figure 2 、 4 and 5. A transmission line 130 is docked in the inner cylinder 119, and a receiving port 131 is installed at a position where the transmission line 130 extends out of the lower part of the inner cylinder 119; a baffle 120 is installed on the circumference of the inner cylinder 119, and a trapezoidal platform 121 is embedded in the circumference of the lower part of the baffle 120. An elastic member 1 is installed at one end of the trapezoidal platform 121 embedded in the baffle 120, and the elastic member 1 is used to restore the trapezoidal platform 121 to its initial state after being free from force. A hollow cylinder 122 is connected to the circumference of the lower part of the inner cylinder 119, and a baffle is installed on the outer hoop of the hollow cylinder 122 123, an O-shaped pad 3 126 is installed on the circumference of the baffle plate 123, and an O-shaped flexible pad 129 is installed on the upper surface of the baffle plate 123, and the upper part of the O-shaped flexible pad 129 is connected to the back of the baffle 120; the upper part of the baffle 120 is an extension part, and the size of the extension part of the baffle 120 matches the outer size of the outer cylinder 100, and the size of the lower part of the baffle 120 matches the inner edge size of the outer cylinder 100; the peripheral contour of the hollow cylinder 122 is flush with the peripheral contour of the inner cylinder 119, and the upper part of the hollow cylinder 122 has an elastic member 4.

[0036] The above specific scheme can achieve the following: when the inner cylinder 119 is assembled, under the action of the limiting groove 102, the trapezoidal platform 4 121 has a pulling effect, so that the inner cylinder 119 is not easily offset during assembly, which saves assembly time. When the trapezoidal platform 4 121 corresponds to the position of the guide groove 101, the inner cylinder 119 is embedded in the outer cylinder 100 to the optimal position. During the embedding process of the inner cylinder 119, when the inner cylinder 119 moves downwardly toward the outer cylinder 100, the O-type pad 2 111 will be linked to the surface of the hollow cylinder 122, thereby blocking the space between the positioning platform 108 and the hollow cylinder 122, and after the inner edge of the O-type pad 2 111 is tightly attached to the surface of the hollow cylinder 122, the position of the hollow cylinder 122 does not change due to the resistance and push characteristics. As the inner cylinder 119 continues to move, the hollow cylinder 122 is linked to control the baffle 123 After the position is limited, the O-shaped gasket 3 126 will be linked to the inner edge of the outer cylinder 100 and pressed tightly, thereby blocking the space between the outer cylinder 100 and the baffle 123. Under the characteristics of the O-shaped soft gasket 129, the space between the inner cylinder 119 and the hollow cylinder 122 can be blocked. In this process, the linkage part of the O-shaped gasket 3 126 is also blocked by the O-shaped soft gasket 129. At the same time, after the inner cylinder 119 is assembled into the outer cylinder 100, the opening position of the O-shaped gasket 103 is blocked, so that when the Wiegand speed sensor is used, it can prevent water vapor from reaching the inside of the outer cylinder 100 and causing damage to the electrical connection. After the inner cylinder 119 is assembled onto the outer cylinder 100, the shape characteristics of the trapezoidal platform 4 121 can prevent the baffle 120 from separating from the outer cylinder 100, so that the baffle 120 can be further limited according to the actual needs of the application. Reference Figure 6 An O-shaped groove 104 is milled on the upper circumferential surface of the outer cylinder 100, and the O-shaped groove 104 is connected to the limiting groove 102. An O-shaped cylinder 105 is movably connected to the O-shaped groove 104. A receiving channel 106 is milled on one side of the O-shaped groove 104 close to the limiting groove 102. A trapezoidal platform 107 is installed on the inner edge of the O-shaped cylinder 105, and the trapezoidal platform 107 is movably located in the receiving channel 106.

[0037] The above contents can be used to achieve the following: when the baffle 120 needs to be maintained, the additional components on the baffle 120 are removed first, and the O-type cylinder 105 is rotated. At this time, the trapezoidal platform 107 will act on the trapezoidal platform 4 121 in the defined groove 102. At this time, the acting parts between the baffle 120 and the outer cylinder 100 cannot function. At this time, the baffle 120 can be pulled out and can be assisted in removal under the action of various elastic parts.

[0038] Reference Figure 3 and 7, a linkage module 1 is installed in the positioning platform 108, and the linkage module 1 includes an O-shaped groove 2 109, a vertical groove 110, an outer vertical frame 112 and an inner vertical frame 113. The O-shaped groove 2 109 is reserved at the inner edge of the positioning platform 108, and the vertical groove 110 is reserved in the middle of the positioning platform 108. The vertical groove 110 is connected to the O-shaped groove 2 109. The vertical groove 110 is milled at equal angles. The outer vertical frame 112 is telescopically installed in the vertical groove 110, and the inner vertical frame 113 is movably installed at one end of the outer vertical frame 112 facing the inner cylinder 119, and the inner vertical frame 113 is at One end of the outer vertical frame 112 is equipped with an elastic member 2, the inner vertical frame 113 is connected to the O-type pad 2 111, and the part of the outer vertical frame 112 facing the outer cylinder 100 is equipped with a trapezoidal platform 2 114. The back of the positioning platform 108 is milled with a linkage channel, and a trapezoidal platform 3 115 is telescopically installed in the linkage channel. The back of the trapezoidal platform 3 115 is connected to the linkage platform 116 through a bracket, and the trapezoidal platform 3 115 touches the slope of the trapezoidal platform 2 114; the back of the positioning platform 108 is equipped with an elastic member 3 117, which is connected to the linkage platform 116, and a connecting channel is reserved on the linkage platform 116.

[0039] Through the above content, it can be achieved that: when the retaining platform 120 is embedded in the outer cylinder 100, the lower position of the inner cylinder 119 touches the linkage platform 116, and the linkage operation of the linkage platform 116 is performed. Under the action of the bracket, the linkage platform 116 links the trapezoidal platform three 115 to change its position in the linkage channel. Under the characteristics of the slope, the trapezoidal platform three 115 links the trapezoidal platform two 114 and the outer vertical frame 112 to change its position along the vertical groove one 110. At this time, the gaseous medium in the vertical groove one 110 is applied to the position of the O-type groove two 109. Under the dual action of the inner vertical frame 113 and the gaseous medium, the O-type pad two 111 is pushed toward the position of the hollow cylinder 122. At the same time, in conjunction with the elastic member two, the hollow cylinder 122 can not change its position.

[0040] Reference Figure 4 and 5 A linkage module 2 is installed on the baffle 123; the linkage module 2 includes an O-shaped groove 3 124, a vertical groove 2 125 and an L rod 127. The O-shaped groove 3 124 is milled on the circumference of the baffle 123, the O-shaped pad 3 126 is installed in the O-shaped groove 3 124, the vertical groove 2 125 is milled on the inner edge of the O-shaped groove 3 124, and the number of vertical groove 2 125 is milled is several. The L rod 127 is movably installed in the vertical groove 2 125, and a connecting frame 128 is movably installed on the part of the L rod 127 outside the baffle 123, and the other part of the connecting frame 128 is movably docked with the circumference of the inner cylinder 119.

[0041] The above contents can achieve the following: after the position of the hollow cylinder 122 does not change, when the inner cylinder 119 is continuously embedded, under the action of the connecting frame 128, the L-rod 127 will move toward the position of the O-shaped gasket 126. During this process, the L-rod 127 transports the gaseous medium in the second vertical channel 125 to the third O-shaped channel 124. At this time, the O-shaped gasket 126 moves toward the inner edge of the outer cylinder 100, thereby blocking the space between the outer cylinder 100 and the baffle 123.

[0042] Example 2: The present invention provides a method for using a Wiegand speed sensor of a hydroelectric generator set, comprising the following steps: When the inner cylinder 119 is assembled, when the position of the trapezoidal platform 4 121 corresponds to the position of the guide groove 101, the inner cylinder 119 is embedded in the outer cylinder 100 to the optimal position. During the embedding process of the inner cylinder 119, when the inner cylinder 119 moves downward toward the outer cylinder 100, the O-type pad 2 111 will be linked to the surface of the hollow cylinder 122, thereby blocking the space between the positioning platform 108 and the hollow cylinder 122. After the inner edge of the O-type pad 2 111 is tightly attached to the surface of the hollow cylinder 122, the position of the hollow cylinder 122 does not change due to the push-resistance characteristic. As the inner cylinder 119 continues to move, the hollow cylinder 122 is linked to control the baffle 1 23 position, then the O-shaped gasket 3 126 will be linked to press against the inner edge of the outer cylinder 100, thereby blocking the space between the outer cylinder 100 and the baffle 123. Due to the characteristics of the O-shaped flexible gasket 129, the space between the inner cylinder 119 and the hollow cylinder 122 can be blocked. In this process, the linkage part of the O-shaped gasket 3 126 is also blocked by the O-shaped flexible gasket 129. At the same time, after the inner cylinder 119 is assembled into the outer cylinder 100, the opening of the O-shaped gasket 103 is blocked. After the inner cylinder 119 is assembled onto the outer cylinder 100, the shape characteristics of the trapezoidal platform 4 121 can prevent the baffle 120 from separating from the outer cylinder 100. When the stopper 120 is embedded in the outer cylinder 100, the lower part of the inner cylinder 119 contacts the linkage platform 116, and the linkage platform 116 is operated in a linkage manner. Under the action of the bracket, the linkage platform 116 links the trapezoidal platform 3 115 to change its position in the linkage channel. Under the characteristics of the slope, the trapezoidal platform 3 115 links the trapezoidal platform 2 114 and the outer vertical frame 112 to change its position along the vertical groove 110. At this time, the gaseous medium in the vertical groove 110 is applied to the position of the O-shaped groove 2 109. Under the dual action of the inner vertical frame 113 and the gaseous medium, the O-shaped pad 2 111 is pushed toward the position of the hollow cylinder 122. At the same time, in conjunction with the elastic member 2, the hollow cylinder 122 is prevented from changing its position. After the position of the hollow cylinder 122 does not change, as the inner cylinder 119 continues to be inserted, the L-rod 127 moves toward the position of the third O-shaped gasket 126 under the action of the connecting frame 128. During this process, the L-rod 127 transports the gaseous medium in the second vertical channel 125 into the third O-shaped channel 124. At this time, the third O-shaped gasket 126 moves toward the inner edge of the outer cylinder 100, thereby blocking the space between the outer cylinder 100 and the baffle 123.

[0043] It should be understood that in the development of any actual embodiment, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but for those of ordinary skill having the benefit of this disclosure, the development effort will be a routine task of design, fabrication, and production without undue experimentation.

[0044] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A Wiegand speed sensor for a hydroelectric generator set, characterized in that: It comprises an outer cylinder (100) and an inner cylinder (119), wherein an inner edge of the opening of the outer cylinder (100) facing the inner cylinder (119) is reserved with an axially arranged guide groove (101) and a limiting groove (102); A positioning platform (108) is installed in the outer cylinder (100), and a linkage platform (116) is installed in parallel on the back of the positioning platform (108). The linkage platform (116) can reciprocate and telescope to change its position. A transmission port (118) is installed on the inner edge of the lower part of the outer cylinder (100); A transmission line (130) is docked in the inner cylinder (119), and a receiving port (131) is installed at a position where the transmission line (130) extends out of the lower portion of the inner cylinder (119); A stopper (120) is installed on the circumference of the inner cylinder (119), a trapezoidal platform (121) is embedded in the circumference of the lower portion of the stopper (120), an elastic member (1) is installed at one end of the trapezoidal platform (121) embedded in the stopper (120), a hollow cylinder (122) is connected to the circumference of the lower portion of the inner cylinder (119), and a stopper (123) is installed on the outer hoop of the hollow cylinder (122); An O-shaped pad 2 (111) is installed on the inner edge of the positioning platform (108), and a linkage module 1 for cooperating with the linkage platform (116) is installed at the position where the O-shaped pad 2 (111) is located; An O-shaped soft pad (129) is installed on the upper surface of the baffle (123), and the upper portion of the O-shaped soft pad (129) is connected to the back of the baffle (120). An O-shaped pad three (126) is installed on the circumference of the baffle (123). A linkage module two for cooperating with the inner cylinder (119) is installed on the baffle (123) and inside the O-shaped soft pad (129).

2. A Wiegand speed sensor for a hydroelectric generator set according to claim 1, characterized in that: The guide groove (101) is arranged along the axial direction of the inner wall of the outer cylinder (100), and a radially arranged limiting groove (102) is provided at the end of the guide groove (101). The guide groove (101) and the limiting groove (102) are connected, and the limiting groove (102) is located close to the opening of the outer cylinder (100). An O-type gasket (103) is installed on the outer surface of the outer cylinder (100) facing the opening of the inner cylinder (119).

3. A Wiegand speed sensor for a hydroelectric generator set according to claim 2, characterized in that: The elastic member 1 is arranged in a mounting hole on the outer circumference of the retaining platform (120), and the elastic member 1 is used to restore the trapezoidal platform 4 (121) to its initial state after being free from force; The trapezoidal platform 4 (121) cooperates with the guide groove (101) and the limiting groove (102); An O-shaped groove (104) is milled on the upper peripheral surface of the outer cylinder (100), the O-shaped groove (104) is connected to the limiting groove (102), and an O-shaped cylinder (105) is movably connected to the O-shaped groove (104).

4. A Wiegand speed sensor for a hydroelectric generator set according to claim 3, characterized in that: The linkage module 1 includes an O-shaped groove 2 (109), a vertical groove 1 (110), an outer vertical frame (112) and an inner vertical frame (113). The O-shaped groove 2 (109) is reserved at the inner edge of the positioning platform (108), and the vertical groove 1 (110) is reserved in the middle of the positioning platform (108). The vertical groove 1 (110) is connected to the O-shaped groove 2 (109), and the vertical groove 1 (110) is milled at equal angles.

5. A Wiegand speed sensor for a hydroelectric generator set according to claim 4, characterized in that: The linkage module 2 includes an O-shaped groove 3 (124), a vertical groove 2 (125) and an L-rod (127). The O-shaped groove 3 (124) is milled on the circumference of the baffle (123). The O-shaped pad 3 (126) is installed in the O-shaped groove 3 (124). The vertical groove 2 (125) is milled on the inner edge of the O-shaped groove 3 (124). The number of vertical grooves 2 (125) is milled is several. The L-rod (127) is movably installed in the vertical groove 2 (125). A connecting frame (128) is movably installed at the portion of the L-rod (127) outside the baffle (123). The other portion of the connecting frame (128) is movably connected to the circumference of the inner cylinder (119).

6. A Wiegand speed sensor for a hydroelectric generator set according to claim 5, characterized in that: The upper portion of the stopper (120) is an extension portion, the size of the extension portion of the stopper (120) matches the outer size of the outer cylinder (100), and the size of the lower portion of the stopper (120) matches the inner edge size of the outer cylinder (100); the peripheral contour of the hollow cylinder (122) is flush with the peripheral contour of the inner cylinder (119), and the upper portion of the hollow cylinder (122) has an elastic member four.

7. The Wiegand speed sensor for a hydroelectric generator set according to claim 5, characterized in that: The O-shaped groove (104) is milled with a receiving channel (106) on one side close to the limiting groove (102), and the inner edge of the O-shaped cylinder (105) is provided with a trapezoidal platform (107), which is movably located in the receiving channel (106).

8. The Wiegand speed sensor for a hydroelectric generator set according to claim 5, characterized in that: The outer vertical frame (112) is telescopically installed in the vertical ditch (110), and the inner vertical frame (113) is movably installed at one end of the outer vertical frame (112) facing the inner cylinder (119), and the inner vertical frame (113) is provided with an elastic member 2 at one end in the outer vertical frame (112), and the inner vertical frame (113) is docked with the O-type pad 2 (111).

9. The Wiegand speed sensor for a hydroelectric generator set according to claim 5, characterized in that: The outer vertical frame (112) is provided with a trapezoidal platform 2 (114) at a position facing the outer cylinder (100), and a linkage channel is milled on the back of the positioning platform (108), in which a trapezoidal platform 3 (115) is telescopically installed. The back of the trapezoidal platform 3 (115) is connected to the linkage platform (116) through a bracket, and the trapezoidal platform 3 (115) touches the slope of the trapezoidal platform 2 (114).

10. The Wiegand speed sensor for a hydroelectric generator set according to claim 5, characterized in that: The back of the positioning platform (108) is provided with an elastic member three (117), and the elastic member three (117) is connected to the linkage platform (116), and a communication channel is reserved on the linkage platform (116).

11. The method for using the Wiegand speed sensor of a hydroelectric generator set according to any one of claims 6 to 10, characterized in that: The following steps are involved: When the inner cylinder (119) is assembled, when the position of the trapezoidal platform (121) corresponds to the position of the guide groove (101), the inner cylinder (119) is embedded in the outer cylinder (100) to the optimal position. During the embedding process of the inner cylinder (119), when the inner cylinder (119) moves downward toward the outer cylinder (100), the O-type pad (111) will be linked to the surface of the hollow cylinder (122), thereby blocking the space between the positioning platform (108) and the hollow cylinder (122). After the inner edge of the O-type pad (111) is closely attached to the surface of the hollow cylinder (122), the position of the hollow cylinder (122) does not change under the characteristics of the push-resistance. As the inner cylinder (119) continues to move, the hollow cylinder (122) is linked to control the baffle (1 23) position limitation, then the O-type pad three (126) will be linked to the inner edge of the outer cylinder (100) and pressed against it, thereby blocking the space between the outer cylinder (100) and the baffle (123). Under the characteristics of the O-type soft pad (129), the space between the inner cylinder (119) and the hollow cylinder (122) can be blocked. In this process, the linkage part of the O-type pad three (126) is also blocked by the O-type soft pad (129). At the same time, after the inner cylinder (119) is assembled into the outer cylinder (100), the opening position of the O-type pad one (103) is blocked. After the inner cylinder (119) is assembled into the outer cylinder (100), under the shape characteristics of the trapezoidal platform four (121), the baffle (120) can be prevented from separating from the outer cylinder (100). When the retaining platform (120) is embedded in the outer cylinder (100), the lower part of the inner cylinder (119) touches the linkage platform (116), and the linkage platform (116) is linked. Under the action of the bracket, the linkage platform (116) links the trapezoidal platform three (115) to change its position in the linkage channel. Under the characteristics of the slope, the trapezoidal platform three (115) links the trapezoidal platform two (114) and the outer vertical frame (112) to change its position along the vertical groove one (110). At this time, the gaseous medium in the vertical groove one (110) is acted on the position of the O-type groove two (109). Under the dual action of the inner vertical frame (113) and the gaseous medium, the O-type pad two (111) is pushed toward the position of the hollow cylinder (122). At the same time, in conjunction with the elastic member two, the hollow cylinder (122) can not change its position. After the position of the hollow cylinder (122) does not change, when the inner cylinder (119) is continuously embedded, the L-rod (127) moves toward the position of the O-type gasket (126) under the action of the connecting frame (128). During this process, the L-rod (127) transports the gaseous medium in the vertical groove (125) to the O-type groove (124). At this time, the O-type gasket (126) moves toward the inner edge of the outer cylinder (100), thereby blocking the space between the outer cylinder (100) and the baffle (123).

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