Water turbine seat ring guide vane positioning and assembling device

Abstract

The invention discloses a water turbine seat ring guide vane positioning and assembling device, and relates to the technical field of water turbine seat assembling, the water turbine seat ring guide vane positioning and assembling device comprises a water turbine seat, a guide vane and an assembling group, the assembling group comprises an assembling seat, the water turbine seat is arranged on the assembling seat, a cross plate is installed in the assembling seat, the end portion of the cross plate extends out of the assembling seat, a vertical rod is installed on the cross plate, and the end portion of the cross plate extends out of the assembling seat. An outer positioning block is installed on the vertical rod, the outer end of the guide vane makes contact with the outer positioning block, a plurality of limiting rods are further installed on the assembling base, two limiting rods are in one set and located on the inner ring and the outer ring of the limiting base respectively, the two limiting rods are attached to the inner ring and the outer ring of the water turbine base, and the upper positioning set comprises a positioning base which is arranged on a supporting column in a sleeving mode. Inner positioning blocks are distributed on the circumference of the upper positioning seat and installed on the upper positioning seat through bolts, inner positioning grooves are formed in the outer end faces of the inner positioning blocks, and the inner positioning grooves make contact with the guide vanes.

Description

Technical Field

[0001] The present invention belongs to the technical field of turbine stay ring assembly, and particularly relates to a positioning and assembly device for the stay ring guide vanes of a turbine. Background Art

[0002] The assembly of the stay ring guide vanes of a turbine refers to the process of installing and fixing the stay ring and guide vanes of the turbine. The stay ring and the spiral case are two major components of the embedded part of a Francis turbine. They are not only the basic components of the unit but also part of the flow components of the unit. They bear the water pressure distribution load that changes with the operating conditions of the unit and the force transmitted from the top cover. The overall structure of the stay ring is an integral whole of the upper ring, the lower ring, and the stay vanes; the stay ring must have sufficient strength and stiffness to ensure that it can withstand various loads. During the assembly process of the stay ring guide vanes of a turbine, the following problems may be encountered: inaccurate positioning, difficult installation, and noise.

[0003] For example, a production process of a turbine spiral case stay ring disclosed in a Chinese patent document with a publication number of CN114473302A includes the steps of positioning → installing and welding a support device → placing an upper ring plate → preheating → welding guide vanes → root cleaning and high-temperature PT inspection → high-temperature UT inspection → welding the R corner, without giving the opportunity for crack defects caused by thermal and cold shrinkage and without giving the opportunity for workpiece size deformation, ensuring the qualified rate of weld flaw detection. Therefore, root cleaning is carried out on the back of the weld, high-temperature PT inspection and high-temperature UT inspection are carried out. At the same time, in order to control the dimensions in place, the present invention adopts a "one guide vane, one support" structure, reasonably setting the shrinkage allowance during the welding of the ring plate and the stay vanes, and ensuring the opening dimension of each stay vane after forming.

[0004] Another example is a positioning device for the assembly of the stay ring guide vanes of a turbine disclosed in a Chinese patent document with a publication number of CN222307796U, which includes a water turbine main body and a shaft arranged therein. A plurality of blades are arranged on the circumferential side of the shaft. A plurality of positioning grooves are opened on the circumferential side of the shaft, and positioning mechanisms are arranged on both side walls of the plurality of positioning grooves. The plurality of blades are respectively located in the plurality of positioning grooves, and the plurality of positioning mechanisms are respectively connected to the plurality of blades. Each set of positioning mechanisms includes a mounting groove, a rotating block, a clamping block, a clamping groove, a spring groove, and three springs. The mounting groove is opened on one side of the positioning groove. The rotating block is rotatably connected between the inner bottom wall and the inner top wall of the mounting groove. The spring groove is opened on one side of the rotating block. The three springs are all fixedly connected to one side wall of the spring groove. The positioning mechanism, the blade, the shaft, and the water turbine main body cooperate, and the positioning mechanism can slightly fix and position the blade with the shaft for convenient subsequent welding.

[0005] In the prior art, when the assembly device is used, it needs to correspond to the model of the stay ring guide vanes of the turbine. By adding a welding support device beside each guide vane, the structure of the positioning and assembly device is complex, and it is impossible to ensure the same angle during the assembly of multiple guide vanes, which affects the assembly quality. Summary of the Invention

[0006] In view of the above problems in the prior art, the object of the present invention is to provide a positioning and assembling device for the stay ring guide vanes of a water turbine.

[0007] The present invention provides the following technical solutions: A positioning and assembling device for the stay ring guide vanes of a water turbine, comprising a water turbine stay, guide vanes and an assembling group. The assembling group includes an assembling seat. The water turbine stay is placed on the assembling seat. A cross plate is installed inside the assembling seat. The end of the cross plate extends outside the assembling seat. A vertical rod is installed on the cross plate. An outer positioning block is installed on the vertical rod. The outer end of the guide vane contacts the outer positioning block. A plurality of limiting rods are also installed on the assembling seat. Two of the limiting rods are in a group and are respectively located inside and outside the inner circle of the limiting seat. The two limiting rods are in contact with the inner and outer circles of the water turbine stay.

[0008] As a further technical solution, a circular hole is provided on the assembling seat. The circular hole is located in the upper middle part of the assembling seat and is between two adjacent vertical rods. Convex platforms are symmetrically provided inside the circular hole. A double-shaft motor is installed between the convex platforms. Threads are provided on the motor rods of the double-shaft motor, and a threaded sleeve is sleeved on the motor rods. A rotating sleeve is fixedly sleeved on the outer circle of the threaded sleeve. Connecting blocks are installed at both ends of the rotating sleeve. A shaft rod is installed between the two connecting blocks. The shaft rod is located on one side of the threaded sleeve. The shaft rod is rotatably connected to the limiting rod. A soft spring is installed between one side of the threaded sleeve and the end face of the limiting rod.

[0009] As a further technical solution, a vibrator is also installed inside the assembling seat. The vibrator is located above the double-shaft motor. Thimble needles are evenly distributed on the vibrator. The top of the thimble needles passes through the assembling seat and extends above the assembling seat. The top end of the thimble needle contacts the bottom end face of the water turbine stay.

[0010] As a further technical solution, a groove is provided on the cross plate. The bottom of the vertical rod is slidably connected to the groove. A driving group is installed on the cross plate and is connected to the vertical rod. As a further technical solution, the driving group includes a threaded sliding table. The bottom of the vertical rod extends below the groove and is connected to the threaded sliding table. A driving motor is installed at the bottom end of the cross plate. A screw rod is connected to the driving motor. An end fixing frame is sleeved at the end of the screw rod. The end fixing frame is connected to the cross plate. The threaded sliding table is sleeved on the screw rod. A stepped collar is also sleeved on the screw rod. The threaded sliding table is located between the stepped collar and the end fixing frame.

[0011] As a further technical solution, a concave cavity is provided inside the assembling seat. The central intersection of the cross plate is located inside the concave cavity. A support column is threadedly installed on the cross plate. An upper positioning group is installed on the support column.

[0012] As a further technical solution, the upper positioning group includes a positioning seat sleeved on the support column. Inner positioning blocks are circumferentially arranged on the upper positioning seat and are installed on the upper positioning seat through bolts. Inner positioning grooves are formed on the outer end faces of the inner positioning blocks, and the inner positioning grooves are in contact with the guide vanes.

[0013] As a further technical solution, a plurality of spheres are movably installed on the groove walls of the inner positioning grooves, and the spheres form point contacts with the guide vanes.

[0014] As a further technical solution, outer positioning grooves are formed in the outer positioning blocks, and the outer ends of the guide vanes are located in the outer positioning grooves.

[0015] As a further technical solution, a rotating motor is installed inside the vertical rod. The rotating motor is connected to the outer positioning block. A plurality of springs are embedded in the outer positioning grooves, and rubber pads are installed at the outer ends of the springs and are in contact with the guide vanes.

[0016] The beneficial effects of the present invention are as follows: Firstly, the top end face of the assembly seat is the bearing plane of the turbine seat, ensuring the stability of bearing. Secondly, a plurality of limiting rods are arranged on the assembly seat, and the limiting rods are respectively closely attached to the inner ring and the outer ring of the turbine seat to complete the positioning and fixing of the turbine seat. The position of the turbine seat is also adjusted by vibration through the vibrator and the ejector pin, so that the turbine seat and the assembly seat are centered. The movement of the outer positioning block is realized through two groups of screws and threaded sliders, and the outer positioning block positions the outer end face of the guide vane. For the assembly of guide vanes of turbine seat rings of different models, detachable support columns and upper positioning groups are selected. After installing the support columns and the upper positioning groups, the inner positioning blocks in the upper positioning groups fix the inner end faces of the guide vanes. After removing the support columns and the upper positioning groups, the turbine seat ring guide vanes are positioned through the limiting rods and the outer positioning blocks. A structure for rotating the guide vanes by an angle is also arranged inside the outer positioning block, which can accurately adjust the angles of each guide vane on the turbine seat and improve the assembly quality. Description of the Drawings

[0017] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. In the drawings: Figure 1 is a schematic structural diagram of the first turbine seat and guide vane installation structure of the present invention; Figure 2 is a schematic structural diagram of the second turbine seat and guide vane installation structure of the present invention; Figure 3 is a schematic structural diagram of the assembly group of the present invention; Figure 4 is a schematic structural diagram of the upper positioning group of the present invention; Figure 5Schematic diagram of the internal structure of the round hole of the present invention; Figure 6 Schematic diagram of the working state structure of the limiting rod of the present invention; Figure 7 Schematic diagram of the connection structure between the threaded sleeve and the limiting rod of the present invention; Figure 8 Schematic diagram of the sectional structure of the inner positioning block of the present invention; Figure 9 Schematic diagram of the installation structure of the outer positioning block and the vertical rod of the present invention; Figure 10 Schematic diagram of the bottom view structure of the cross plate of the present invention.

[0018] The labels in the figure are: 1, turbine seat; 2, guide vane; 3, upper positioning group; 301, upper positioning seat; 302, inner positioning block; 303, inner positioning groove; 304, outer positioning groove; 305, sphere; 306, bolt; 4, assembly group; 401, outer positioning block; 402, cross plate; 403, assembly seat; 404, groove; 405, vertical rod; 406, lower concave cavity; 407, vibrator; 408, ejector pin; 409, limiting rod; 410, connecting block; 411, round hole; 412, boss; 413, double-shaft motor; 414, threaded sleeve; 415, rotating sleeve; 416, soft spring; 417, rubber pad; 418, spring; 419, rotating motor; 5, support column; 6, driving group; 601, driving motor; 602, screw rod; 603, stepped collar; 604, threaded slide; 605, end fixing frame. Detailed implementation manners

[0019] As Figures 1-3 shown, the present invention provides a turbine stay ring guide vane positioning and assembling device, including a turbine seat 1, a guide vane 2 and an assembly group 4. The assembly group 4 includes an assembly seat 403. The turbine seat 1 is placed on the assembly seat 403, that is, the top end surface of the assembly seat 403 is the bearing plane of the turbine seat 1.

[0020] Embodiment 1 As Figure 3 and Figure 4 shown, a cross plate 402 is installed in the assembly seat 403. The cross plate 402 is composed of two mutually perpendicular and integrally formed plate members. The end of the cross plate 402 extends outside the assembly seat 403. A vertical rod 405 is installed on the cross plate 402, and an outer positioning block 401 is installed on the vertical rod 405. The outer end of the guide vane 2 contacts the outer positioning block 401, and the outer positioning block 401 limits the position of the outer end face of the guide vane 2. In order to realize the positioning of multiple guide vanes 2 on the turbine seat 1 at the same time, the cross plate 402 can be composed of multiple plate members. One ends of the multiple plate members converge together, and the other ends form a circle, and the angles between adjacent plate members are the same.

[0021] A groove 404 is formed in the cross vane 402, the bottom of the vertical rod 405 is slidably connected to the groove 404, the outer positioning block 401 is connected to the vertical rod 405, and when the vertical rod 405 moves along the groove 404, the outer positioning block 401 is driven to move. The outer end face of the guide vane 2 is limited by the outer positioning block 401, and the movement of multiple outer positioning blocks 401 causes the circular area enclosed by the multiple circumferentially arranged outer positioning blocks 401 to change, that is, the positioning of the guide vanes on the turbine seats with multiple different diameters is realized.

[0022] Further, as Figure 4 shown, an outer positioning groove 304 is formed in the outer positioning block 401, and the outer end of the guide vane 2 is located in the outer positioning groove 304. By clamping the outer end of the guide vane 2 into the outer positioning groove 304, three-sided limitation of the guide vane 2 is realized, effectively restricting the position of the guide vane 2 and avoiding the position deviation of the guide vane 2 during assembly. In order to strengthen the stability of the contact surface between the guide vane 2 and the outer positioning groove 304, as Figure 9 shown, a plurality of springs 418 are embedded in the outer positioning groove 304. The position of the guide vane 2 is fixed, the outer positioning block 401 moves towards the guide vane 2, the outer end of the guide vane 2 is clamped into the outer positioning groove 304, a rubber pad 417 is installed at the outer end of the spring 418, when the guide vane 2 contacts the rubber pad 417, the spring 418 is compressed by force, and at the same time due to the elastic force of the spring 418, the rubber pads 417 on the three sides of the outer positioning groove 304 squeeze the guide vane 2, stably fixing the guide vane 2. The rubber pad 417 is in direct contact with the guide vane 2, serving the purpose of anti-slip and protecting the surface of the guide vane.

[0023] Furthermore, a rotating motor 419 is installed in the vertical rod 405, and the rotating motor 419 is connected to the outer positioning block 401. Since the guide vane 2 needs to be installed at a certain angle during assembly, and when multiple guide vanes are assembled separately, the installation angles of the guide vanes 2 need to be the same. When the rotating motor 419 works, the outer positioning block 401 rotates relative to the vertical rod 405, and the outer end of the guide vane 2 is driven to rotate by the outer positioning block 401, improving the consistency of the installation angles of the guide vanes during assembly.

[0024] As Figure 3 and Figure 4 shown, in addition to positioning the outer end face of the guide vane 2 by the outer positioning block 401, a support column 5 is installed on the assembly seat 403, and an upper positioning group 3 is installed on the support column 5. The upper positioning group 3 is slidably connected to the support column 5, and the inner end face of the guide vane 2 is positioned by the upper positioning group 3, achieving the purpose of inner and outer circle limiting and positioning.

[0025] Specifically, the upper positioning group 3 includes a positioning seat 301, the positioning seat 301 is sleeved on the support column 5, and inner positioning blocks 302 are circumferentially arranged on the upper positioning seat 301. The positions of the inner positioning blocks 302 correspond to the positions of the outer positioning blocks 401 one by one, completing the positioning of the inner and outer circles of the guide vane. The inner positioning block 302 is installed on the upper positioning seat 301 through bolts 306, and the inner positioning block 302 can be disassembled separately. An inner positioning groove 303 is formed on the outer end face of the inner positioning block 302. The inner positioning groove 303 contacts the guide vane 2. Further, a plurality of spheres 305 are movably installed on the groove wall of the inner positioning groove 303. The spheres 305 are in point contact with the guide vane 2. When the outer positioning block 401 drives the outer end of the guide vane 2 to rotate, the inner end of the guide vane 2 applies a force to the inner positioning block 302, causing the upper positioning seat 301 to rotate by a corresponding angle. The inner positioning groove 303 and the guide vane 2 are in clearance fit, and the inner positioning groove 303 only serves as a limiting function.

[0026] As Figure 1 shown, it is composed of two upper and lower turbine seats 1 and guide vanes evenly arranged between the turbine seats 1. During assembly, first place one of the turbine seats on the assembly seat 403. The manipulator grabs the guide vanes 2 respectively and places them on the turbine seat. When placing, press the inner end face of the guide vane 2 against the inner positioning groove 303 to initially position the inner end face of the guide vane 2. Then, the vertical rod 405 moves in the groove 404, causing the outer positioning block 401 to move towards the outer end face of the guide vane 2. The height of the guide vane 2 is greater than the height of the outer positioning block 401, which is convenient for the manipulator to grab. Until the outer end face of the guide vane 2 is stuck into the outer positioning groove 304, the rubber pad 417 is in close contact with the outer end face of the guide vane 2 to fix the outer end face of the guide vane 2. The rotating motor 419 drives the outer positioning block 401 to rotate by a certain angle. After driving the guide vane 2 to rotate by a certain angle through the outer positioning block 401, subsequent operations are performed on the contact surface between the guide vane 2 and the water-cooled machine seat 1, and then it is taken out. Then, place the other water-cooled machine seat 1 on the assembly seat 403, reverse the taken-out guide vane and the water-cooled machine seat, so that the other end of the guide vane contacts the other water-cooled machine seat, and repeat the above operations to complete the assembly of the water-cooled machine seat ring guide vanes.

[0027] Embodiment 2 On the basis of the above Embodiment 1, in the assembly process, in addition to positioning the guide vane 2, it is also necessary to position the turbine seat 1 to further improve the assembly quality of the turbine seat ring guide vanes. A plurality of limiting rods 409 are also installed on the assembly seat 403. Two of the limiting rods 409 are in a group and are respectively located in the inner circle and the outer circle of the limiting seat 403. The two limiting rods 409 are in contact with the inner circle and the outer circle of the turbine seat 1. The position of the turbine seat is restricted by the limiting rods 409 to prevent the turbine seat from moving during assembly.

[0028] Specifically, as Figures 5-7As shown in the figure, a round hole 411 is provided in the assembly seat 403. The round hole 411 is located in the upper middle part of the assembly seat 403 so that when the limit rod 409 works, the position of the water turbine seat can be restricted. The round hole 411 is located between two adjacent vertical rods 405. Convex platforms 412 are symmetrically arranged in the round hole 411. A double-shaft motor 413 is installed between the convex platforms 412. Threads are provided on the motor rods of the double-shaft motor 413, and a threaded sleeve 414 is sleeved on the motor rods. A lead screw-nut transmission mechanism is formed by the motor rods and the threaded sleeve 414. The double-shaft motor 413 drives the motor rods to rotate. Therefore, the threaded sleeve 414 can move linearly along the motor rods. A rotating sleeve 415 is fixedly sleeved on the outer circle of the threaded sleeve 414. Connecting blocks 410 are installed at both ends of the rotating sleeve 415. A shaft rod is installed between the two connecting blocks 410. The shaft rod is located on one side of the threaded sleeve 414. A limit rod 409 is rotatably connected to the shaft rod. As the threaded sleeve 414 moves linearly, therefore, the limit rod 409 connected to the threaded sleeve 414 moves linearly along the round hole 411. A soft spring 416 is installed between one side of the threaded sleeve 414 and the end face of the limit rod 409. When the threaded sleeve 414 moves towards the inside of the round hole 411, the limit rod 409 is restricted by the round hole 411, so that the limit rod 409 is horizontally located in the round hole 411. When the threaded sleeve 414 moves towards the outer end of the round hole 411, when the threaded sleeve 414 moves to a certain position, the limit rod 409 is completely located outside the round hole 414. At this time, relying on the action of the soft spring 416, the limit rod 409 is in the vertical direction. Therefore, the two limit rods 409 swing relatively, thereby fixing the inner ring and the outer ring of the water turbine seat.

[0029] Furthermore, when the water turbine seat is fixed, in order to improve the centering of the water turbine seat and the assembly seat 403, a vibrator 407 is also installed in the assembly seat 403. The vibrator 407 is located above the double-shaft motor 413. Thumb tacks 408 are evenly distributed on the vibrator 413. The top of the thumb tacks 408 passes through the assembly seat 403 and extends above the assembly seat 403. The top end of the thumb tacks 408 contacts the bottom end face of the water turbine seat 1. The vibrator 407 transmits the vibration force to the thumb tacks 408, and the water turbine seat is further fine-tuned through the thumb tacks 408, so that the axes of the limit rods 409 and the threaded sleeve 404 located in the inner ring and the outer ring of the water turbine seat are perpendicular to each other.

[0030] Embodiment III On the basis of the above Embodiment II, in addition to the assembly positioning of the water turbine seat ring guide vane as shown in Figure 1 the figure, as shown in Figure 4 the figure, a concave cavity 406 is provided in the assembly seat 403. The center intersection of the cross plate 402 is located in the concave cavity 406. A support column 5 is threadedly installed on the cross plate 402 for the detachable installation of the support column 5 and the assembly seat 403. The purpose of installing the support column 5 in a detachable manner is that when performing the operation as shown in Figure 2When assembling the guide vanes of the turbine seat ring shown, the supporting column 5 can be disassembled. Specifically, after the supporting column 5 and the upper positioning group 3 are disassembled, the turbine seat is placed on the assembly seat 403, and the threaded sleeve 414 is moved toward the outer end of the circular hole 411, so that the limiting rod 409 is completely moved out of the circular hole 414, and the limiting rod 409 is fixed to the inner ring and the outer ring of the turbine seat in a vertical direction by the soft spring 416. At the same time, the vertical rod 405 moves in the groove 404, so that the outer positioning block 401 moves toward the outer end surface of the turbine seat 1, and the outer positioning block 401 is close to the outer end surface of the turbine seat 1, so that the turbine seat 1 is fixed. A plurality of guide vanes are sequentially plugged into the turbine seat 1 by a manipulator, and then other processes are performed.

[0031] Furthermore, in order to facilitate the movement of the pole 405, Figure 10 As shown, a driving group 6 is installed on the cross plate 402, and the driving group 6 is connected to the vertical rod 405. A through hole (not shown in the figure) that cooperates with the driving group 6 is provided in the cross plate 402 and the assembly seat 403. The driving group 6 includes a threaded slide 604. The bottom of the vertical rod 405 extends to the bottom of the groove 404 and is connected to the threaded slide 604. A driving motor 601 is installed at the bottom end of the cross plate 402. The driving motor 601 is preferably a dual-spindle motor. A screw 602 is connected to the driving motor 601, and an end of the screw 602 is sleeved with an end fixing bracket 605 The end fixing frame 605 is connected to the cross plate 402, the threaded slide 604 is sleeved on the screw rod 602, and the screw rod 602 is also sleeved with a step collar 603. The threaded slide 604 is located between the step collar 603 and the end fixing frame 605. The purpose of setting the step collar 603 and the end fixing frame 605 is to prevent the threaded slide 604 from escaping from the threaded area of the screw rod 602. The screw rod 602 is rotated by driving the motor 601, and the threaded slide 604 moves along the screw rod 602, driving the vertical rod 405 to move in the groove 404.

[0032] The working principle of the present invention in use is as follows: Place the bottom water turbine seat on the assembly seat 403. The double-shaft motor 413 drives the motor rod to rotate, and the threaded sleeve 414 moves outward from the circular hole 411, so that the limit rod 409 is completely outside the circular hole 414. The limit rod 409 vertically fixes the inner and outer rings of the bottom water turbine seat through the soft spring 416. The vibrator 407 works and transmits the vibration force to the thimble 408, and further fine-tunes the bottom water turbine seat through the thimble 408, so that the axes of the limit rod 409 and the threaded sleeve 404 located in the inner and outer rings of the bottom water turbine seat are perpendicular to each other. The manipulator grabs the guide vane 2, makes the inner end face of the guide vane 2 close to the inner positioning groove 303 and places it on the bottom water turbine seat, initially positions the inner end face of the guide vane 2. The driving motor 601 rotates the screw rod 602, and the threaded slide 604 moves along the screw rod 602, driving the vertical rod 405 to move in the groove 404, so that the outer positioning block 401 moves towards the outer end face of the guide vane 2 until the outer end face of the guide vane 2 is stuck in the outer positioning groove 304, and the rubber pad 417 is in close contact with the outer end face of the guide vane 2 to fix the outer end face of the guide vane 2. The rotating motor 419 drives the outer positioning block 401 to rotate a certain angle. After driving the guide vane 2 to rotate a certain angle through the outer positioning block 401, subsequent operations are performed on the contact surface between the guide vane 2 and the bottom water-cooled machine seat, and then taken out. Then place the top water-cooled machine seat on the assembly seat 403, reversely assemble the taken-out guide vane and the bottom water-cooled machine seat, so that the other end of the guide vane contacts the top water-cooled machine seat, and repeat the subsequent operations on the contact surface between the guide vane 2 and the bottom water-cooled machine seat to complete the assembly of the water-cooled machine seat ring guide vane.

[0033] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A positioning and assembly device for guide vanes of a turbine stay ring, comprising a turbine stay (1), guide vanes (2) and an assembly group (4), characterized in that, The assembly group (4) includes an assembly seat (403), the water turbine seat (1) is placed on the assembly seat (403), a cross plate (402) is installed inside the assembly seat (403), the end of the cross plate (402) extends outside the assembly seat (403), a vertical rod (405) is installed on the cross plate (402), an outer positioning block (401) is installed on the vertical rod (405), the outer end of the guide vane (2) contacts the outer positioning block (401), and a plurality of limiting rods (409) are also installed on the assembly seat (403). Two of the limiting rods (409) are in a group and are respectively located in the inner circle and the outer circle of the limiting seat (403), and the two limiting rods (409) are in contact with the inner circle and the outer circle of the water turbine seat (1).

2. The positioning and assembling device for the stay ring guide vanes of a hydraulic turbine according to claim 1, characterized in that, A round hole (411) is formed in the assembly seat (403). The round hole (411) is located in the upper middle part of the assembly seat (403) and is between two adjacent vertical rods (405). Convex platforms (412) are symmetrically arranged inside the round hole (411). A double-shaft motor (413) is installed between the convex platforms (412). Threads are provided on the motor rods of the double-shaft motor (413), and a thread sleeve (414) is sleeved on the motor rods. A rotating sleeve (415) is fixedly sleeved on the outer circle of the thread sleeve (414). Connecting blocks (410) are installed at both ends of the rotating sleeve (415). A shaft rod is installed between the two connecting blocks (410). The shaft rod is located on one side of the thread sleeve (414). A limiting rod (409) is rotatably connected to the shaft rod. A soft spring (416) is installed between one side of the thread sleeve (414) and the end face of the limiting rod (409).

3. The positioning and assembly device for the stay ring guide vanes of a hydraulic turbine according to claim 2, wherein, A vibrator (407) is also installed inside the assembly seat (403). The vibrator (407) is located above the double-shaft motor (413). Thimble (408) are evenly arranged on the vibrator (413). The top of the thimble (408) passes through the assembly seat (403) and extends above the assembly seat (403). The top end of the thimble (408) contacts the bottom end face of the water turbine seat (1).

4. The positioning and assembling device for the stay ring guide vane of a water turbine according to claim 3, wherein A groove (404) is formed in the cross plate (402). The bottom of the vertical rod (405) is slidably connected to the groove (404), and a driving group (6) is installed on the cross plate (402). The driving group (6) is connected to the vertical rod (405).

5. The positioning and assembling device for the stay ring guide vane of a water turbine according to claim 4, wherein The driving group (6) includes a threaded slide (604). The bottom of the vertical rod (405) extends below the groove (404) and is connected to the threaded slide (604). A driving motor (601) is installed at the bottom end of the cross plate (402). A screw rod (602) is connected to the driving motor (601). An end fixing frame (605) is sleeved at the end of the screw rod (602). The end fixing frame (605) is connected to the cross plate (402). The threaded slide (604) is sleeved on the screw rod (602). A stepped collar (603) is also sleeved on the screw rod (602). The threaded slide (604) is located between the stepped collar (603) and the end fixing frame (605).

6. The positioning and assembling device for the stay ring guide vanes of a water turbine according to claim 5, characterized in that, A concave cavity (406) is formed in the assembly seat (403). The central intersection of the cross-shaped plate (402) is located in the concave cavity (406). A support column (5) is threadedly installed on the cross-shaped plate (402), and an upper positioning group (3) is installed on the support column (5).

7. The positioning and assembling device for the stay ring guide vanes of a water turbine according to claim 6, characterized in that, The upper positioning group (3) includes a positioning seat (301). The positioning seat (301) is sleeved on the support column (5). Inner positioning blocks (302) are circumferentially arranged on the upper positioning seat (301). The inner positioning blocks (302) are installed on the upper positioning seat (301) through bolts (306). Inner positioning grooves (303) are formed on the outer end faces of the inner positioning blocks (302), and the inner positioning grooves (303) are in contact with the guide vanes (2).

8. The positioning and assembling device for the stay ring guide vanes of a water turbine according to claim 7, characterized in that, A plurality of spheres (305) are movably installed on the groove walls of the inner positioning grooves (303), and the spheres (305) are in point contact with the guide vanes (2).

9. The positioning and assembling device for the stay ring guide vanes of a water turbine according to claim 1, wherein An outer positioning groove (304) is formed in the outer positioning block (401), and the outer end of the guide vane (2) is located in the outer positioning groove (304).

10. The positioning and assembling device for the stay ring guide vanes of a hydraulic turbine according to claim 9, characterized in that, A rotary motor (419) is installed in the vertical rod (405). The rotary motor (419) is connected to the outer positioning block (401). A plurality of springs (418) are embedded in the outer positioning groove (304). Rubber pads (417) are installed at the outer ends of the springs (418), and the rubber pads (417) are in contact with the guide vanes (2).

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