A wear resistance detection device for the sealing ring of the water turbine guide vane shaft head

Abstract

The present invention relates to a wear resistance detection device for the sealing ring of the water turbine guide vane shaft head, which relates to the field of detection of water turbine sealing rings and includes a detection table. A detection unit is arranged at the upper end of the detection table. By fixing multiple sealing rings separately in a detachable manner, not only can multiple sealing rings be subjected to wear resistance detection simultaneously in a stable state, reducing the detection time and improving the detection efficiency, but also since the wear conditions of each sealing ring may be different, separate fixing and simultaneous grinding can avoid the interference caused by the mutual stacking of multiple sealing rings during the detection process in the traditional method, ensuring that the detection environments of different sealing rings are the same, thereby improving the accuracy and reliability of the wear resistance detection results; the sealing rings are continuously ground circumferentially by arc-shaped grinding plates with different friction coefficients to simulate the frictional force and actual working friction conditions received by the sealing rings in different use environments, so as to be able to more comprehensively evaluate their wear resistance.

Description

Technical Field

[0001] The present invention relates to the field of detection of water turbine sealing rings, and specifically to a wear resistance detection device for the sealing ring of the guide vane shaft head of a water turbine. Background Art

[0002] A water turbine is a device that uses the energy of water flow to convert it into mechanical energy. It can convert the kinetic energy and potential energy of water flow into rotational mechanical energy, thereby driving a generator or other mechanical equipment to work. A water turbine mainly consists of a housing, a main shaft, guide vanes, a runner, and a sealing device, etc. Water flow can enter the runner through the water inlet of the water turbine. The water flow impacts the runner blades and causes them to start rotating. The runner can drive an engine or other mechanical equipment to work through the main shaft, thereby realizing the conversion of energy. The sealing device is usually installed at the sealing position between the housing and the rotating shaft. The rubber sealing ring used in the sealing device is mainly used to prevent water from leaking out of the runner chamber and also prevent external air from entering the runner chamber, so as to ensure the normal operation of the water turbine. The water turbine usually works in sediment environments of different thicknesses. In order to keep the water turbine in good sealing effect during operation, the rubber sealing ring in close contact with the housing must have a certain wear resistance.

[0003] However, the following problems exist in the current process of detecting the wear resistance of the sealing ring: 1. The number of sealing rings detected in the same batch is limited, and the detection efficiency is low. At the same time, the mutual acting force generated by the sealing rings stacked closely with each other is likely to interfere with their own detection, making it difficult to ensure the accuracy and reliability of the detection results of the wear resistance of the sealing ring.

[0004] 2. Generally, the wear resistance of the sealing ring is detected in a single environment. However, the usage environment of the water turbine is generally complex, and the friction force received by the sealing ring during actual work is also correspondingly different. Therefore, the detection results obtained in a single environment are difficult to more comprehensively evaluate the wear resistance of the sealing ring.

[0005] Therefore, in order to solve the problems existing in the process of detecting the wear resistance of the sealing ring, the present invention provides a wear resistance detection device for the sealing ring of the guide vane shaft head of a water turbine. Summary of the Invention

[0006] The present invention provides a wear resistance testing device for a guide vane shaft head sealing ring of a water turbine, comprising a testing platform, wherein a testing unit is arranged at the upper end of the testing platform; the testing unit comprises a shell body symmetrically arranged at the upper end of the testing platform and in a semi-cylindrical shape, wherein arc-shaped grinding plates with different friction coefficients are arranged evenly up and down on the inner wall of the shell body, and a driving component for driving the left and right shell bodies to move synchronously toward or in opposite directions is arranged at the lower end of the testing platform; the testing unit further comprises a fixing component arranged at the upper end of the testing platform and located between the left and right shell bodies, wherein the fixing component comprises a plurality of fixing components for fixing the sealing rings evenly arranged up and down. The fixing part comprises a fixing ring, the upper end of which is provided with arc blocks evenly arranged in the circumference, and the upper end of the arc blocks is provided with alignment holes. Except for the fixing ring of the lowest fixing component, the lower ends of the other fixing rings are provided with alignment cylinders which are plugged in one by one with the alignment holes. The outer parts of the arc blocks evenly arranged in the circumference are jointly provided with a pressure plate which is slidably connected to the arc blocks up and down. A connecting column is installed on the upper end of the pressure plate, and a cross groove is provided on the upper end of the connecting column. Except for the pressure plate of the lowest fixing component, the lower ends of the other pressure plates are provided with cross protrusions which penetrate the fixing ring and are plugged in with the cross groove.

[0007] In one of the embodiments, a pressure circular plate is provided at the upper end of the uppermost arc-shaped block, and a cross protrusion plugged into the cross groove is also installed at the lower end of the pressure circular plate, and a pressure column which is evenly arranged circumferentially and plugged into the corresponding positioning circular hole is installed at the lower end of the pressure circular plate, a resistance rod is installed at the upper end of the pressure circular plate, and a control circular plate is provided above the resistance rod, and a control rod which is symmetrical about the resistance rod and slides through the pressure circular plate is installed at the lower end of the control circular plate, and a connecting spring located between the control circular plate and the pressure circular plate is sleeved on the outside of the control rod, and a connecting rod is rotatably installed at the upper end of the control circular plate and the lower end of the fixed circular ring of the lowest fixing part, and a control component for controlling the up and down movement of the connecting rod is provided at the upper end of the detection platform.

[0008] In one embodiment, the driving assembly includes a rectangular groove opened at the upper end of the detection table, and a gear is rotatably installed on the upper end of the bottom wall of the rectangular groove. The front and rear sides of the gear are respectively meshed with rack plates fixedly connected to the corresponding shell and slidably connected to the rectangular groove.

[0009] In one of the embodiments, the connecting rod located at the bottom rotates and passes through the gear and the detection platform. The control component includes connecting plates installed at the ends of the upper and lower connecting rods that are away from each other. A cylinder that is symmetrical front and back about the rectangular groove is installed at the upper end of the detection platform. The cylinder pushing end located on the front side is fixedly connected to the upper connecting plate, and the cylinder pushing end located on the rear side slides through the detection platform and is fixedly connected to the lower connecting plate.

[0010] In one embodiment, a driving pulley that is sleeved outside the lower connecting rod and is in sliding fit with the connecting rod through splines is provided. A cylindrical sleeve that is rotatably connected to the lower end of the detection table is installed at the upper end of the driving pulley. A connecting pulley that is rotatably connected to the lower end of the detection table is arranged on the right side of the driving pulley. The driving pulley and the connecting pulley are connected by belt drive. The lower end of the connecting pulley is connected to the output shaft of the driving motor, and the driving motor is installed at the lower end of the detection table through a motor support.

[0011] In one embodiment, an adjusting ring that is also sleeved outside the lower connecting rod and is in sliding fit with the connecting rod through splines is provided. An arc-shaped convex block that is in sliding fit with the gear is installed at the upper end of the adjusting ring. An installation ring that is located below the driving pulley is sleeved outside the connecting rod. An adjusting rod that is symmetric about the connecting rod and slidably penetrates through the driving pulley is connected between the adjusting ring and the installation ring. The installation ring is rotatably sleeved on a rectangular plate. The lower end of the left side of the rectangular plate is connected to the pushing end of an electric push rod, and the electric push rod is installed at the lower end of the detection table through a push rod support.

[0012] In one embodiment, symmetrically arranged inverted L-shaped support rods are installed on the outside of the left and right casings. The vertical sections of the inverted L-shaped support rods are in sliding connection with the left and right sides of the detection table. The right end of the horizontal section of the left inverted L-shaped support rod is installed with an alignment rod that is in sliding fit with the corresponding right inverted L-shaped support rod.

[0013] In one embodiment, arc-shaped mounting plates are arranged inside the casings. Adjusting springs that are evenly arranged are connected between the outer ring surfaces of the arc-shaped mounting plates and the inner walls of the casings. The arc-shaped grinding plates are arranged on the inner walls of the corresponding arc-shaped mounting plates, and the arc-shaped grinding plates and the arc-shaped mounting plates are detachably connected.

[0014] In summary, the present invention includes at least one of the following beneficial effects:

[0015] 1. The present invention provides a wear resistance detection device for the sealing ring of the water turbine guide vane shaft head. By fixing multiple sealing rings separately in a detachable manner, not only can multiple sealing rings be simultaneously subjected to wear resistance detection in a stable state, reducing the detection time and improving the detection efficiency, but also the error caused by the individual differences of the sealing rings can be reduced. At the same time, the wear resistance of multiple sealing rings can be compared, and the performance differences of different sealing rings can be more intuitively understood.

[0016] 2. The present invention provides a wear resistance detection device for the sealing ring of the water turbine guide vane shaft head. Since the wear conditions of each sealing ring may be different, fixing separately and grinding simultaneously can avoid the interference caused by the mutual stacking of multiple sealing rings during the detection process in the traditional method, ensure that the detection environments of different sealing rings are the same, and thus improve the accuracy and reliability of the wear resistance detection results.

[0017] 3. The present invention provides a wear resistance detection device for the sealing ring of the water turbine guide vane shaft head. The sealing ring is continuously polished circumferentially by arc-shaped polishing plates with different friction coefficients, simulating the frictional force and actual working friction of the sealing ring in different usage environments, so as to more comprehensively evaluate its wear resistance.

[0018] In addition to the technical problems solved by the embodiments of the present invention described above, the technical features constituting the technical solutions, and the beneficial effects brought by these technical features of the technical solutions, the other technical problems that can be solved by a wear resistance detection device for the sealing ring of the water turbine guide vane shaft head provided by the embodiments of the present application, the other technical features included in the technical solutions, and the beneficial effects brought by these technical features will be further described in detail in the specific implementation manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings described below are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0020] Figure 1 It is a front view three-dimensional structural schematic diagram of the present invention.

[0021] Figure 2 It is a three-dimensional structural schematic diagram of the arc-shaped mounting plate, adjusting spring and arc-shaped polishing plate of the present invention.

[0022] Figure 3 It is a three-dimensional structural schematic diagram of the driving component and the fixing component of the present invention.

[0023] Figure 4 It is a three-dimensional structural schematic diagram of the driving motor, connecting belt pulley and transmission belt pulley of the present invention.

[0024] Figure 5 It is a three-dimensional structural schematic diagram of the electric push rod, adjusting ring and arc-shaped convex block of the present invention.

[0025] Figure 6 It is a three-dimensional structural schematic diagram of the control component of the present invention.

[0026] Figure 7 It is a three-dimensional structural schematic diagram of the fixing part of the present invention.

[0027] Figure 8 It is a three-dimensional structural schematic diagram of the cross groove and alignment round hole of the present invention.

[0028] Figure 9Schematic three-dimensional structure diagram of the arc-shaped block and the fixed circular ring of the present invention.

[0029] Reference numerals: 1, detection table; 11, detection unit; 111, housing; 112, arc-shaped grinding plate; 121, fixed circular ring; 122, arc-shaped block; 123, alignment round hole; 124, alignment cylinder; 125, pressing plate; 126, connecting column; 127, cross groove; 128, cross convex block; 131, pressing round plate; 132, pressing column; 133, resisting rod; 134, control round plate; 135, control rod; 136, connecting rod; 137, cylinder; 138, connecting plate; 141, rectangular groove; 142, gear; 143, rack plate; 144, driving belt pulley; 145, cylindrical sleeve; 146, connecting belt pulley; 147, belt; 148, driving motor; 151, adjusting circular ring; 152, arc-shaped convex block; 153, mounting ring; 154, adjusting rod; 155, rectangular plate; 156, electric push rod; 161, inverted L-shaped support rod; 162, alignment rod; 163, arc-shaped mounting plate; 164, adjusting spring; 2, sealing ring. Detailed implementation manners

[0030] In order to make the above objects, features, and advantages of the present invention more obvious and understandable, the following will describe the detailed implementation manners of the present invention with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0031] Please refer to Figure 1 , a wear resistance detection device for the sealing ring of the water turbine guide vane shaft head, including a detection table 1, and a detection unit 11 is arranged at the upper end of the detection table 1.

[0032] Please refer to Figure 1 and Figure 2 , the detection unit 11 includes a housing 111 which is symmetrically arranged on the upper end of the detection table 1 on the left and right and is in a semi-cylindrical shape. An arc-shaped mounting plate 163 is arranged inside the housing 111. A uniformly arranged adjusting spring 164 is connected between the outer ring surface of the arc-shaped mounting plate 163 and the inner wall of the housing 111. Arc-shaped grinding plates 112 are arranged on the inner wall of the arc-shaped mounting plate 163 in a uniformly arranged manner up and down. The arc-shaped grinding plates 112 and the arc-shaped mounting plate 163 are detachably connected. The friction coefficients of the arc-shaped grinding plates 112 from top to bottom correspond to those required by the sealing ring 2 in different thick and fine sediment environments. A driving assembly for driving the left and right housings 111 to move synchronously towards or away from each other is arranged at the lower end of the detection table 1.

[0033] Please refer to Figure 1 , Figure 3 ,Figure 7 , Figure 8 and Figure 9 , the detection unit 11 further includes a fixing component disposed at the upper end of the detection table 1 and located between the left and right housings 111. The fixing component is composed of multiple groups of fixing members arranged uniformly up and down for fixing the sealing ring 2. The fixing member includes a fixing ring 121. An arc-shaped block 122 is installed at the upper end of the fixing ring 121 and is arranged circumferentially and uniformly. A positioning round hole 123 is opened at the upper end of the arc-shaped block 122. Except for the fixing ring 121 of the lowermost fixing member, positioning cylinders 124 inserted into the positioning round holes 123 in one-to-one correspondence are installed at the lower ends of the remaining fixing rings 121. A pressing plate 125 that is slidably connected to the arc-shaped blocks 122 up and down is sleeved outside the circumferentially and uniformly arranged arc-shaped blocks 122. A connecting column 126 is installed at the upper end of the pressing plate 125. A cross-shaped groove 127 is opened at the upper end of the connecting column 126. Except for the pressing plate 125 of the lowermost fixing member, cross-shaped protrusions 128 that penetrate the fixing ring 121 and are inserted into the cross-shaped groove 127 are installed at the lower ends of the remaining pressing plates 125.

[0034] Please refer to Figure 1 , Figure 3 and Figure 6 , a pressing circular plate 131 is provided at the upper end of the uppermost arc-shaped block 122. A cross-shaped protrusion 128 inserted into the cross-shaped groove 127 is also installed at the lower end of the pressing circular plate 131. Pressure columns 132 that are arranged circumferentially and uniformly and are inserted into the corresponding positioning round holes 123 are installed at the lower end of the pressing circular plate 131. A pressing rod 133 is installed at the upper end of the pressing circular plate 131. A control circular plate 134 is provided above the pressing rod 133. Control rods 135 that are symmetric about the pressing rod 133 and slidably penetrate the pressing circular plate 131 are installed at the lower end of the control circular plate 134. A connecting spring is sleeved outside the control rods 135 and is located between the control circular plate 134 and the pressing circular plate 131. Connecting rods 136 are rotatably installed at the upper end of the control circular plate 134 and the lower end of the fixing ring 121 of the lowermost fixing member respectively. A control component for controlling the up and down movement of the connecting rod 136 is provided at the upper end of the detection table 1. The lower connecting rod 136 rotatably penetrates the detection table 1. The control component includes connecting plates 138 installed at the ends of the upper and lower connecting rods 136 away from each other respectively. Symmetric cylinders 137 are installed at the upper end of the detection table 1, one in the front and one in the back. The pushing end of the cylinder 137 on the front side is fixedly connected to the upper connecting plate 138. The pushing end of the cylinder 137 on the back side slidably penetrates the detection table 1 and is then fixedly connected to the lower connecting plate 138.

[0035] Specifically, when detecting the wear resistance of the sealing ring 2: First, it is necessary to fix each of the multiple sealing rings 2 to be detected one by one through the fixing component. During this process, the first sealing ring 2 can be manually sleeved outside the arc-shaped blocks 122 evenly arranged circumferentially on the lowermost fixing member, and the sealing ring 2 is placed on the upper end of the fixing ring 121 of the lowermost fixing member. Subsequently, the pressing plate 125 can be moved downward along the arc-shaped block 122 and pressed on the upper end of the sealing ring 2. The connecting column 126 moves downward synchronously with the pressing plate 125, and the limiting of one sealing ring 2 can be completed. Then, the fixing ring 121 of another fixing member can be placed on the upper end of the lowermost fixing member, and the alignment cylinder 124 at the lower end of the fixing ring 121 is inserted into the alignment round hole 123 opened at the upper end of the arc-shaped block 122 of the lowermost fixing member. Subsequently, the limiting of the second sealing ring 2 can be completed in the same manner as above. During the process of the pressing plate 125 pressing down the second sealing ring 2, the cross-shaped protrusion 128 installed at the lower end of the pressing plate 125 is inserted into the cross-shaped groove 127 opened on the connecting column 126 of the lowermost fixing member. With the cooperation of the alignment cylinder 124, the alignment round hole 123, the cross-shaped protrusion 128, and the cross-shaped groove 127, adjacent fixing members form a whole. By analogy, layer by layer stacking can complete the limiting of multiple sealing rings 2 to be detected from bottom to top. However, at this time, the sealing rings 2 are not completely fixed; fixing the multiple sealing rings 2 separately in a detachable manner not only enables multiple sealing rings 2 to be subjected to wear resistance detection simultaneously in a stable state, reduces the detection time, and improves the detection efficiency, but also can reduce the errors caused by the individual differences of the sealing rings 2, compare the wear resistance of multiple sealing rings 2 at the same time, and more intuitively understand the performance differences of different sealing rings 2. In addition, since the wear conditions of each sealing ring 2 may be different, separate fixing and simultaneous grinding can avoid the interference caused by the mutual stacking of multiple sealing rings 2 during the detection process in the traditional method, ensure that the detection environments of different sealing rings 2 are the same, and thus improve the accuracy and reliability of the wear resistance detection results. Additionally, the detection quantity and detection position of the sealing ring 2 can be freely selected according to requirements.

[0036] Since the sealing ring 2 is elastic, to ensure that the sealing ring 2 is completely fixed during the wear resistance test, the front cylinder 137 can drive the upper connecting rod 136 to move downward through the connecting plate 138. The upper connecting rod 136 drives the control circular plate 134 to move downward synchronously. The control circular plate 134 drives the pressing circular plate 131, the cross-shaped convex block 128 and the pressing column 132 to move towards the direction of the uppermost fixing member through the control rod 135 until the cross-shaped convex block 128 at the lower end of the pressing circular plate 131 is inserted and matched with the cross-shaped groove 127 opened on the connecting column 126 of the uppermost fixing member, and the pressing column 132 is inserted and matched with the alignment circular hole 123 opened on the arc-shaped block 122 of the uppermost fixing member. At this time, a whole fixing assembly is in a stable state under the action of the control assembly and the upper and lower connecting rods 136. Then, the cylinder 137 continues to push the upper connecting rod 136, the control circular plate 134 and the control rod 135 downward. At this time, the control circular plate 134 drives the control rod 135 to slide through the pressing circular plate 131 by compressing the connecting spring until the control circular plate 134 abuts against the abutting rod 133 at the upper end of the pressing circular plate 131. During this process, the abutting rod 133 drives the pressing circular plate 131 and the cross-shaped convex block 128 to press the connecting column 126 of the uppermost fixing member downward, and the pressing column 132 moves downward synchronously with the pressing circular plate 131 along the alignment circular hole 123. The uppermost connecting column 126 drives the pressing plate 125 to press the uppermost sealing ring 2 downward. With the cooperation of the connecting column 126, the cross-shaped groove 127 and the cross-shaped convex block 128, the connecting columns 126 of the other fixing members all drive the corresponding pressing plates 125 to press the corresponding sealing rings 2 synchronously, thereby completing the simultaneous fixing of multiple sealing rings 2. The sealing rings 2 are in a completely fixed state under the pressing of the pressing plates 125, effectively preventing the sealing rings 2 from displacing or deforming during the test, making the test process more stable and reliable, thus ensuring the accuracy of the test results and improving the test efficiency.

[0037] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5The driving assembly includes a rectangular groove 141 opened at the upper end of the detection platform 1, and a gear 142 rotatably connected to the connecting rod 136 is rotatably installed on the upper end of the bottom wall of the rectangular groove 141. The front and rear sides of the gear 142 are respectively meshed with a rack plate 143 fixedly connected to the corresponding shell 111 and slidably connected to the rectangular groove 141. The connecting rod 136 located at the bottom is externally sleeved with a transmission pulley 144 that slides with the connecting rod 136 through a spline. A cylindrical sleeve 145 rotatably connected to the lower end of the detection platform 1 is installed on the upper end of the transmission pulley 144. A connecting pulley 146 rotatably connected to the lower end of the detection platform 1 is arranged on the right side of the transmission pulley 144. The transmission pulley 144 and the connecting pulley 146 are connected by a belt 147. The lower end of the connecting pulley 146 is connected to the output shaft of a driving motor 148, and the driving motor 148 is installed at the lower end of the detection platform 1 through a motor support.

[0038] See also Figure 3 , Figure 4 and Figure 5 The connecting rod 136 located at the bottom is externally sleeved with an adjusting ring 151 which is also slidably matched with the connecting rod 136 through a spline. An arc-shaped protrusion 152 which is slidably matched with the gear 142 is installed on the upper end of the adjusting ring 151. The connecting rod 136 is externally sleeved with a mounting ring 153 located at the lower end of the transmission pulley 144. An adjusting rod 154 which is symmetrical about the connecting rod 136 and slides through the transmission pulley 144 is connected between the adjusting ring 151 and the mounting ring 153. The mounting ring 153 is rotatably sleeved on a rectangular plate 155. The lower left end of the rectangular plate 155 is connected to the pushing end of an electric push rod 156. The electric push rod 156 is installed at the lower end of the detection table 1 through a push rod support.

[0039] After the sealing ring 2 is fixed, the connecting pulley 146 can be driven counterclockwise by the driving motor 148. The connecting pulley 146 drives the transmission pulley 144 to rotate synchronously with the lower connecting rod 136 through the belt 147. The transmission pulley 144 drives the adjusting ring 151 and the arc-shaped protrusion 152 to rotate synchronously through the adjusting rod 154. The adjusting rod 154 drives the mounting ring 153 to rotate synchronously. At this time, the adjusting ring 151 not only slides with the connecting rod 136, but also slides with the gear 142 through the arc-shaped protrusion 152, so that the gear 142 can rotate counterclockwise synchronously with the adjusting ring 151. The gear 142 rotates while driving The rack plates 143 on the front and rear sides move toward each other synchronously along the rectangular groove 141, and the shells 111 on the left and right sides move toward each other synchronously with the corresponding rack plates 143 until the left and right shells 111 are pressed against each other and the drive motor 148 stops working. At this time, the left and right shells 111 can circumferentially limit the fixed sealing ring 2, and the arc-shaped grinding plates 112 on the left and right sides simultaneously conflict with the outer annular surface of the sealing ring 2. It should be noted that in the process of the left and right shells 111 moving toward each other, the fixed assembly and the sealing ring 2 rotate synchronously with the connecting rod 136 below, but the rotating sealing ring 2 at this time will not affect the movement of the left and right shells 111 and subsequent detection.

[0040] Subsequently, the rectangular plate 155 and the mounting ring 153 can be pushed downward along the connecting rod 136 by the electric push rod 156, and the mounting ring 153 drives the adjusting ring 151 and the arc-shaped protrusion 152 to move downward synchronously away from the gear 142 through the adjusting rod 154, so that the gear 142 can no longer rotate synchronously with the adjusting ring 151, and then the driving motor 148 works again, and the connecting pulley 146 and the transmission pulley 144 continue to rotate, and the lower connecting rod 136 drives the fixing assembly and the sealing ring 2 to rotate synchronously as a whole through the lowest fixing piece, and the control assembly and the upper connecting rod 136 rotate synchronously accordingly, and the sealing ring 2 in the fast rotating state frictionally contacts with the arc-shaped grinding plates 112 on the left and right sides, and the arc-shaped grinding plates 112 simulate the sealing. The friction force that the ring 2 is subjected to in the actual use environment is measured, and the outer ring surface of the sealing ring 2 is continuously polished. After the arc-shaped polishing plate 112 rotates and polishes the sealing ring 2 for a certain period of time, the driving motor 148 stops working, and then the arc-shaped protrusion 152 can be matched with the gear 142 again in the opposite way mentioned above, and the shells 111 on the left and right sides are synchronously moved in the opposite direction to move away from the sealing ring 2. Then, the surface of the sealing ring 2 after polishing inspection can be observed one by one to see whether there are signs of wear, scratches, cracks or other damage. At the same time, the degree of wear, such as the depth, width or area of ​​wear, can be measured, and these results and the corresponding polishing time are recorded, which can be compared later to evaluate the wear resistance of the sealing ring 2, so as to judge whether the wear resistance of the sealing ring 2 is good or bad.

[0041] During the rotational friction process between the sealing ring 2 and the arc-shaped grinding plate 112, the arc-shaped grinding plate 112 installed on the inner wall of the arc-shaped mounting plate 163 abuts against the outer ring surface of the sealing ring 2 under the action of the adjusting spring 164. Since the sealing ring 2 after being ground for a certain period of time may be worn, resulting in a change in the diameter of the sealing ring 2, the worn sealing ring 2 can no longer be in close contact with the arc-shaped grinding plate 112, and the grinding effect is also weakened, and the validity of the wear resistance detection result cannot be guaranteed. Therefore, the cooperation between the adjusting spring 164 and the arc-shaped mounting plate 163 is used to ensure that the sealing ring 2 in the grinding process is always in close contact with the arc-shaped grinding plate 112, thereby improving the authenticity of the wear resistance detection result.

[0042] Then, the control assembly can be moved upward away from the fixed assembly in the opposite manner described above, and the multiple sealing rings 2 fixed by the fixed assembly can be removed one by one from top to bottom. Subsequently, the wear resistance of the sealing rings 2 in different batches can be detected in the same manner described above.

[0043] In addition, since the friction coefficients of the arc-shaped grinding plates 112 at different positions are different, and the arc-shaped grinding plates 112 with different friction coefficients correspond to the different frictional forces received by the sealing ring 2 in the actual use environment, during the grinding process of the arc-shaped grinding plate 112 on the sealing ring 2, the friction situation of the sealing ring 2 in actual work can be simulated by simulating different use environments of the sealing ring 2, so as to be able to more comprehensively evaluate its wear resistance. Before detecting the wear resistance of the sealing ring 2, the corresponding connecting plates 138 on the front and rear sides can be simultaneously pushed up or down by the hydraulic cylinders on both sides, and the upper and lower connecting plates 138 simultaneously drive the corresponding connecting rods 136 to move in the same direction. With the cooperation of the upper and lower connecting rods 136, the fixed assembly and the sealing ring 2 fixed thereon move synchronously with the upper and lower connecting rods 136 until the sealing ring 2 moves to the positions corresponding to different arc-shaped grinding plates 112. During the wear resistance detection process, since the arc-shaped grinding plate 112 and the arc-shaped mounting plate 163 are detachably connected, different arc-shaped grinding plates 112 with different friction coefficients can be flexibly replaced. The sealing rings 2 in the same batch or different batches of detections can be ground by the arc-shaped grinding plates 112 with different friction coefficients, or the sealing rings 2 in the same batch or different batches can be ground by the arc-shaped grinding plates 112 with the same friction coefficient. It should be noted that before the detection, the friction coefficients of the arc-shaped grinding plates 112 corresponding to different sealing rings 2 need to be recorded, and the detection results detected under different friction coefficients can be compared and analyzed subsequently to obtain a true and reliable detection result.

[0044] During the process of the arc-shaped grinding plate 112 grinding the sealing ring 2, the air cylinders 137 on the front and rear sides can also reciprocate up and down simultaneously to push the corresponding connecting plates 138 and connecting rods 136, so that the fixing assembly and the sealing ring 2 can reciprocate up and down along the corresponding arc-shaped grinding plate 112. The sealing ring 2 moves up and down reciprocally while rotating and contacting the arc-shaped grinding plate 112. By reciprocating friction up and down while circumferentially friction with the arc-shaped grinding plate 112, not only can the water flow impact force received by the sealing ring 2 in the actual use environment be simulated, the wear resistance of the sealing ring 2 in actual use be more realistically reflected, but also the sealing ring 2 can be evenly worn circumferentially, the detection can be completed faster, and the detection efficiency can be further improved.

[0045] Please refer to Figure 1 and Figure 2 On the outer sides of the left and right casings 111, symmetrically arranged front and rear inverted L-shaped support rods 161 are installed. The vertical sections of the inverted L-shaped support rods 161 are slidably connected to the left and right of the detection table 1. At the right end of the horizontal section of the left inverted L-shaped support rod 161, a positioning rod 162 that is slidably engaged with the corresponding right inverted L-shaped support rod 161 is installed.

[0046] During the movement of the left and right casings 111, the front and rear opposite inverted L-shaped support rods 161 move synchronously along the detection table 1 with the corresponding casings 111. The inverted L-shaped support rods 161 can be used to support the moving casings 111, improving the stability of the casings 111 during the movement and wear resistance detection process. During the synchronous opposite movement of the left and right casings 111, the left positioning rod 162 gradually slidably engages with the right inverted L-shaped support rod 161, thereby ensuring that the left and right casings 111 can be accurately and smoothly docked.

[0047] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "middle", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0048] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "connected", "installed", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection, a sliding connection; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0049] The embodiments of this specific implementation manner are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A device for testing the wear resistance of a guide vane shaft seal ring of a turbine, comprising a testing platform (1), characterized in that: A detection unit (11) is provided at the upper end of the detection platform (1); The detection unit (11) comprises a semi-cylindrical shell (111) which is symmetrically arranged at the upper end of the detection platform (1), wherein arc-shaped grinding plates (112) which are evenly arranged up and down and have different friction coefficients are arranged inside the shell (111), and a driving component for driving the left and right shells (111) to move synchronously towards or in opposite directions is arranged at the lower end of the detection platform (1); The detection unit (11) further comprises a fixing assembly arranged at the upper end of the detection platform (1) and located between the left and right shells (111), the fixing assembly comprising a plurality of fixing members evenly arranged up and down for fixing the sealing ring (2), the fixing member comprising a fixing ring (121), the upper end of the fixing ring (121) being provided with arc blocks (122) evenly arranged in the circumferential direction, the upper end of the arc blocks (122) being provided with alignment circular holes (123), and except for the fixing ring (121) of the bottom fixing assembly, the lower ends of the remaining fixing rings (121) are all provided with alignment circular holes (123) The circular holes (123) are correspondingly connected to the corresponding positioning cylinders (124), and the arc blocks (122) are evenly arranged in the circumferential direction. A pressing plate (125) is sleeved on the outside and is connected to the arc blocks (122) for sliding up and down. A connecting column (126) is installed on the upper end of the pressing plate (125), and a cross groove (127) is opened on the upper end of the connecting column (126). Except for the pressing plate (125) of the bottom fixing part, the lower ends of the other pressing plates (125) are all installed with a cross protrusion (128) that penetrates the fixing ring (121) and is plugged into the cross groove (127); A plurality of sealing rings (2) to be tested are fixed one by one by a fixing component, and the fixing component and the sealing ring (2) rotate synchronously as a whole. The sealing ring (2) in a fast rotating state is in frictional contact with the arc-shaped grinding plates (112) on the left and right sides. The arc-shaped grinding plates (112) are used to simulate the friction force that the sealing ring (2) is subjected to in a real use environment, and the outer annular surface of the sealing ring (2) is continuously polished. During the process of the arc-shaped grinding plates (112) polishing the sealing ring (2), the fixing component and the sealing ring (2) move back and forth up and down along the corresponding arc-shaped grinding plates (112), so that the sealing ring (2) reciprocates up and down while in rotational contact with the arc-shaped grinding plates (112). The sealing ring (2) rubs against the arc-shaped grinding plates (112) while circumferentially rubbing against the arc-shaped grinding plates (112), so that the water flow impact force that the sealing ring (2) is subjected to in a real use environment is simulated.

2. The wear resistance testing equipment for guide vane shaft seal ring of a water turbine according to claim 1, characterized in that: The upper end of the arc block (122) at the top is provided with a pressing circular plate (131), and the lower end of the pressing circular plate (131) is also provided with a cross protrusion (128) plugged into the cross groove (127), and the lower end of the pressing circular plate (131) is provided with a pressure column (132) which is evenly arranged in the circumferential direction and plugged into the corresponding positioning circular hole (123), and the upper end of the pressing circular plate (131) is provided with a push rod (133), and a control circular plate (134) is provided above the push rod (133), and the control circular plate (134) is provided. A control rod (135) is installed at the lower end of the detection platform (1) and is symmetrical with the push rod (133) and slides through the push circular plate (131). A connecting spring is sleeved on the outside of the control rod (135) and is located between the control circular plate (134) and the push circular plate (131). A connecting rod (136) is rotatably installed on the upper end of the control circular plate (134) and the lower end of the fixed ring (121) of the lowest fixing member. A control component for controlling the upward and downward movement of the connecting rod (136) is arranged at the upper end of the detection platform (1).

3. The wear resistance testing equipment for guide vane shaft seal ring of a water turbine according to claim 1, characterized in that: The driving assembly comprises a rectangular groove (141) formed at the upper end of the detection platform (1); a gear (142) is rotatably mounted on the upper end of the bottom wall of the rectangular groove (141); and rack plates (143) are respectively meshed with the corresponding housing (111) and fixedly connected to the rectangular groove (141) at the front and rear sides of the gear (142). The rack plates (143) are slidably connected to the rectangular groove (141).

4. The wear resistance testing equipment for guide vane shaft seal ring of a water turbine according to claim 2, characterized in that: The connecting rod (136) located at the bottom rotates and penetrates the gear (142) and the detection platform (1). The control component includes connecting plates (138) respectively installed at the ends of the upper and lower connecting rods (136) that are away from each other. The upper end of the detection platform (1) is equipped with a cylinder (137) that is symmetrical front and back about the rectangular groove (141). The pushing end of the cylinder (137) located at the front side is fixedly connected to the upper connecting plate (138), and the pushing end of the cylinder (137) located at the rear side slides through the detection platform (1) and is fixedly connected to the lower connecting plate (138).

5. The wear resistance testing equipment for guide vane shaft seal ring of a water turbine according to claim 2, characterized in that: The connecting rod (136) located at the bottom is sleeved with a transmission pulley (144) which is slidably matched with the connecting rod (136) through a spline. The upper end of the transmission pulley (144) is provided with a cylindrical sleeve (145) which is rotatably connected to the lower end of the detection platform (1). The right side of the transmission pulley (144) is provided with a connecting pulley (146) which is rotatably connected to the lower end of the detection platform (1). The transmission pulley (144) and the connecting pulley (146) are connected by a belt (147). The lower end of the connecting pulley (146) is connected to the output shaft of a driving motor (148). The driving motor (148) is installed at the lower end of the detection platform (1) through a motor support.

6. The wear resistance testing equipment for guide vane shaft seal ring of a water turbine according to claim 2, characterized in that: The connecting rod (136) located at the bottom is sleeved with an adjusting ring (151) which is also slidably matched with the connecting rod (136) through a spline. The upper end of the adjusting ring (151) is mounted with an arc-shaped protrusion (152) which is slidably matched with the gear (142). The connecting rod (136) is sleeved with a mounting ring (153) located at the lower end of the transmission pulley (144). An adjusting rod (154) which is symmetrical with respect to the connecting rod (136) and slides through the transmission pulley (144) is connected between the adjusting ring (151) and the mounting ring (153). The mounting ring (153) is rotatably sleeved on a rectangular plate (155). The lower left end of the rectangular plate (155) is connected to the pushing end of an electric push rod (156). The electric push rod (156) is mounted on the lower end of the detection platform (1) through a push rod support.

7. The wear resistance testing equipment for guide vane shaft seal ring of a water turbine according to claim 1, characterized in that: The outer parts of the left and right shells (111) are both equipped with front-to-back symmetrical inverted L-shaped support rods (161), the vertical sections of the inverted L-shaped support rods (161) are slidably connected to the detection platform (1) left and right, and the right end of the horizontal section of the left inverted L-shaped support rod (161) is equipped with a positioning rod (162) that slidably cooperates with the corresponding right inverted L-shaped support rod (161).

8. The wear resistance testing equipment for guide vane shaft seal ring of a water turbine according to claim 1, characterized in that: The shell (111) is provided with an arc-shaped mounting plate (163) inside, and evenly arranged adjustment springs (164) are connected between the outer annular surface of the arc-shaped mounting plate (163) and the inner wall of the shell (111). The arc-shaped grinding plates (112) are arranged on the inner walls of the corresponding arc-shaped mounting plates (163), and the arc-shaped grinding plates (112) and the arc-shaped mounting plates (163) are detachably connected.

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