Movable guide vane lock ingot servomotor of water turbine

Abstract

The invention discloses a water turbine movable guide vane locking servomotor, and relates to the technical field of water turbine equipment, the water turbine movable guide vane locking servomotor comprises a limiting assembly, an adjusting assembly and a locking assembly, the limiting assembly comprises a cylinder body and a piston rod arranged in the cylinder body, and the two ends of the piston rod are both provided with a push-pull rod and a spring guide rod which penetrate through the cylinder body; one end of the spring guide rod slidably penetrates through the adjusting plate, and the two ends of the telescopic spring abut against the adjusting plate and the piston rod correspondingly. The guide vane locking device has the beneficial effects that the purpose of controlling the locking state of the movable guide vane is achieved through operation of the limiting assembly, the effect of controlling the compression amount of the telescopic spring is achieved through movement of the adjusting plate, the situation that the telescopic spring is excessively compressed and damaged when the guide vane locking ingot exits is prevented by adjusting the resilience force of the telescopic spring, and the service life of the guide vane locking ingot is prolonged. And the design of the detachable closed top cover is utilized, so that the convenience of assembling and disassembling the telescopic spring in the cylinder body is improved.

Description

Technical Field

[0001] The invention relates to the technical field of water turbine equipment, in particular to a water turbine movable guide vane lock spindle servo. Background Art

[0002] A water turbine is a power machine that converts the energy of water flow into rotational mechanical energy. In a hydropower station, water from an upstream reservoir is led to the water turbine through a water diversion pipe, driving the turbine runner to rotate, and then driving the generator to generate electricity. Among them, the guide vane lock spindle relay is a key device in the turbine speed control system. The guide vane lock spindle device is to limit the rotation of the control ring by putting in the guide vane lock spindle after the unit is shut down, ensuring that the guide vane will not be suddenly lost The situation of being washed away by the water flow and the guide vane being opened by mistake will not occur, ensuring the safety and reliability of the unit. The existing guide vane lock spindle relay is put in by a spring installed in the relay, and the withdrawal is achieved by the oil source of the oil chamber pressure of the relay. However, the spring is located inside the cylinder body, which is not only inconvenient to observe the bending and deformation state of the spring, but also difficult to adjust the spring compression amount according to the needs of use, and finally the spring is over-compressed, plastically deformed and squeezed, and damaged, losing the normal elastic effect, resulting in the lock spindle not being put in place. In view of this, we propose a water turbine movable guide vane lock spindle relay. Summary of the invention

[0003] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0004] In view of the above-mentioned problems that the servo spring of the existing turbine movable guide vane lock servo is inconvenient to replace and difficult to adjust the compression amount, the present invention is proposed.

[0005] To solve the above technical problems, the present invention provides the following technical solutions: a turbine movable guide vane lock relay, comprising a limit assembly, a cylinder body, and a piston rod arranged inside the cylinder body, and both ends of the piston rod are provided with a push-pull rod and a spring guide rod penetrating the cylinder body, the spring guide rod is sleeved with a telescopic spring on the outside, one end of the push-pull rod is provided with a connecting ring connected to the relay, the cylinder body is provided with oil inlet and outlet holes for the lock relay to move, the end of the cylinder body away from the push-pull rod is fixedly installed with a mounting plate, an adjustment assembly, including an adjustment plate arranged on the mounting plate, and one end of the spring guide rod slides through the adjustment plate, and the two ends of the telescopic spring respectively contact the adjustment plate and the piston rod.

[0006] As a preferred solution of the turbine movable guide vane lock relay described in the present invention, the adjustment component also includes an adjustment threaded hole opened on the adjustment plate, and an adjustment screw with one end threadedly connected to the cylinder body is provided in the adjustment threaded hole, and an adjustment nut threadedly connected to the adjustment screw is provided on the side of the adjustment plate away from the cylinder body.

[0007] As a preferred solution of the turbine movable guide vane lock servomotor of the present invention, one end of the spring guide rod passing through the adjustment plate is flattened.

[0008] As a preferred solution of the turbine movable guide vane lock relay described in the present invention, the limiting assembly also includes a connecting screw fixedly mounted on a connecting ring, a threaded hole threadedly connected to the connecting screw is provided at one end of the push-pull rod close to the connecting ring, and a limiting nut is threadedly sleeved on the connecting screw.

[0009] As a preferred solution of the turbine movable guide vane lock servomotor described in the present invention, a gasket is provided on the inner side of the connecting ring, and the gasket is made of brass.

[0010] As a preferred solution of the turbine movable guide vane lock servomotor of the present invention, a closed top cover is detachably mounted on one end of the cylinder body close to the connecting ring.

[0011] As a preferred solution of the turbine movable guide vane lock servomotor of the present invention, a sealing groove is provided on the piston rod, and a sealing ring is provided in the sealing groove and is in contact with the inner wall of the cylinder body.

[0012] As a preferred solution of the turbine movable guide vane lock relay described in the present invention, wherein: an end of the cylinder body away from the connecting ring is provided with a mounting assembly for fixing the cylinder body, the mounting assembly includes a mounting bracket arranged on the mounting plate, and the mounting bracket is provided with a mounting groove for the mounting plate to slide, the mounting plate is provided with a mounting socket in the area of ​​the mounting plate located in the mounting groove, a mounting rod is inserted in the mounting socket, and one end of the mounting rod slides through the mounting bracket, a mounting block is provided at the lower part of the mounting bracket, and the mounting block and the mounting bracket are detachably connected by bolts.

[0013] The beneficial effects of the present invention are as follows: the purpose of controlling the locking state of the movable guide vane is achieved through the operation of the limit assembly, and the effect of controlling the compression amount of the telescopic spring is achieved by utilizing the movement of the adjusting plate; by adjusting the resilience of the telescopic spring, the telescopic spring is prevented from being over-compressed and damaged when the guide vane lock spindle is withdrawn, and there is a risk of the lock spindle not being put into place and the guide vane being opened by mistake; and the design of a detachable closed top cover is utilized to improve the convenience of loading and unloading the telescopic spring inside the cylinder body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0016] Figure 2 It is a schematic diagram of the split structure of the present invention.

[0017] Figure 3 It is a schematic diagram of the structure of the spring telescopic rod of the present invention.

[0018] Figure 4 This is a schematic diagram of the installation assembly structure of the present invention. DETAILED DESCRIPTION

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0020] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and 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.

[0021] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0022] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0023] Example 1

[0024] Reference Figure 1 to Figure 4, which is the first embodiment of the present invention, provides a limit assembly 100, including a cylinder 101, and a piston rod 109 arranged inside the cylinder 101, and both ends of the piston rod 109 are provided with a push-pull rod 104 and a spring guide rod 110 that penetrate the cylinder 101, and the spring guide rod 110 is sleeved with a telescopic spring 112 on the outside, and one end of the push-pull rod 104 is provided with a connecting ring 105 connected to the relay, and the cylinder 101 is provided with an oil inlet and outlet hole for the movement of the lock spindle relay, and the cylinder 101 is away from the push-pull rod 1 04 is fixedly mounted with a mounting plate 102 at one end; when the device is used, hydraulic oil is first injected into the cylinder body 101 through the oil inlet and outlet holes, and the piston rod 109 is controlled to slide in the cylinder body 101 by controlling the flow of hydraulic oil and the rebound performance of the telescopic spring 112. Since the push-pull rod 104 and the piston rod 109 are coaxially fixed, the piston rod 109 will synchronously drive the push-pull rod 104 to move when it moves, and then drive the connecting ring 105 set on the push-pull rod 104 to move, so as to achieve the purpose of controlling the movable guide vane. The adjustment component 200 includes an adjustment plate 201 set on the mounting plate 102, and one end of the spring guide rod 110 slides through the adjustment plate 201, and the two ends of the telescopic spring 112 are respectively in conflict with the adjustment plate 201 and the piston rod 109. In this embodiment, the adjustment plate 201 is set so that the telescopic spring 112 can be compressed when needed. Since the spring has a strong rebound performance, the telescopic spring 112 will enhance its own rebound force after being compressed, limit the movement stroke of the piston rod 109, and prevent the telescopic spring 112 from being over-compressed and damaged when the guide vane lock spindle is withdrawn, resulting in the risk of the lock spindle not being put into place and the guide vane being opened by mistake.

[0025] Preferably, the adjustment assembly 200 further includes an adjustment threaded hole 202 provided on the adjustment plate 201, and an adjustment screw 204 having one end threadedly connected to the cylinder body 101 is provided in the adjustment threaded hole 202, and an adjustment nut 203 threadedly connected to the adjustment screw 204 is provided on the side of the adjustment plate 201 away from the cylinder body 101. Because the two ends of the telescopic spring 112 are in conflict with the adjustment plate 201 and the piston rod 109 respectively, controlling the adjustment plate 201 to move toward one side of the cylinder body 101 will play a role in compressing the telescopic spring 112, and at this time, the adjustment nut 203 threadedly sleeved on the adjustment screw 204 can be tightened synchronously, which can prevent the telescopic spring 112 from rebounding and increase the stability of the movement of the adjustment plate 201.

[0026] When in use, the purpose of controlling the locking state of the movable guide vane is achieved through the operation of the limit assembly 100, and the effect of controlling the compression amount of the telescopic spring 112 is achieved by utilizing the movement of the adjustment plate 201. By adjusting the rebound force of the telescopic spring 112, the telescopic spring 112 is prevented from being over-compressed and damaged when the guide vane lock spindle is withdrawn.

[0027] Example 2

[0028] Reference Figure 1 to Figure 4 , which is the second embodiment of the present invention, and this embodiment is different from the first embodiment in that one end of the spring guide rod 110 that passes through the adjustment plate 201 is flattened. Because the spring guide rod 110 is a cylindrical structure, it is easy to shake during loading and unloading, which affects the loading and unloading progress. In this embodiment, by flattening one end of the spring guide rod 110, it is convenient to fix the tool during loading and unloading, and reduce the shaking of the spring guide rod 110.

[0029] Preferably, the limiting assembly 100 further includes a connecting screw 106 fixedly mounted on the connecting ring 105, a threaded hole threadedly connected to the connecting screw 106 is provided at one end of the push-pull rod 104 close to the connecting ring 105, and a limiting nut 107 is threadedly sleeved on the connecting screw 106. Through the provision of the connecting screw 106, the distance between the connecting ring 105 and the push-pull rod 104 can be adjusted as needed, thereby expanding the applicable scope of the device, and at the same time, through the provision of the limiting nut 107, the stability of the distance adjustment between the connecting ring 105 and the push-pull rod 104 is enhanced.

[0030] Preferably, a gasket 108 is provided inside the connecting ring 105, and the gasket 108 is made of brass. The provision of the gasket 108 can prevent the connecting ring 105 from being greatly worn during long-term use, thereby increasing the service life of the connecting ring 105. In addition, brass has good wear resistance, and the gasket 108 made of this material has a long service life, which reduces the use cost of the equipment to a certain extent.

[0031] Preferably, a closed top cover 103 is detachably mounted on one end of the cylinder body 101 near the connecting ring 105. The design of the detachable closed top cover 103 facilitates the replacement of the telescopic spring 112 inside the cylinder body 101, thereby ensuring the resilience of the servomotor spring.

[0032] Preferably, a sealing groove 111 is provided on the piston rod 109, and a sealing ring is provided in the sealing groove 111 to fit the inner wall of the cylinder body 101. The arrangement of the sealing groove 111 and the sealing ring can reduce the assembly gap between the piston rod 109 and the inner cavity of the cylinder body 101, reduce the leakage of the hydraulic oil, and improve the movement sensitivity of the push-pull rod 104.

[0033] When in use, the design of the detachable closed top cover 103 improves the convenience of loading and unloading the telescopic spring 112 inside the cylinder 101, and the setting of the connecting screw 106 allows the staff to adjust the distance between the connecting ring 105 and the push-pull rod 104 as needed, thereby expanding the application range of the equipment. At the same time, the setting of the sealing groove 111 and the sealing ring can reduce the assembly gap between the piston rod 109 and the inner cavity of the cylinder 101, thereby improving the sensitivity of the movement of the push-pull rod 104.

[0034] The remaining structures are the same as those of Example 1.

[0035] Example 3

[0036] Reference Figure 4 , which is the third embodiment of the present invention, and this embodiment is different from the second embodiment in that: the end of the cylinder body 101 away from the connecting ring 105 is provided with a mounting assembly 300 for fixing the cylinder body 101, and the mounting assembly 300 includes a mounting bracket 301 arranged on the mounting plate 102, and the mounting bracket 301 is provided with a mounting groove 302 for the mounting plate 102 to slide, and the mounting plate 102 is provided with a mounting socket 303 in the area located in the mounting groove 302, and a mounting rod 304 is inserted in the mounting socket 303, and one end of the mounting rod 304 slides through the mounting bracket 301, and a mounting block 305 is provided at the lower part of the mounting bracket 301, and the mounting block 305 and the mounting bracket 301 are detachably connected by bolts. In this embodiment, the mounting block 305 is connected to the turbine equipment by welding, and is detachably connected to the mounting bracket 301 by bolts, and at the same time, the detachable connection between the device and the turbine body is realized by plugging the mounting rod 304 and the mounting socket 303, which is convenient for the subsequent maintenance and replacement of parts of the equipment.

[0037] When in use, by plugging the mounting rod 304 into the mounting socket 303, a detachable connection between the device and the turbine body is achieved. When a part of the device fails, the detachable design allows the failed part to be quickly replaced without replacing the entire device, which reduces downtime and maintenance costs.

[0038] The remaining structure is the same as that of Example 2.

[0039] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0040] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0041] It will be appreciated that in the development of any actual implementation, 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 will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0042] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. 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 turbine guide vane lock servo, characterized in that: include, The limit assembly (100) comprises a cylinder body (101) and a piston rod (109) arranged inside the cylinder body (101), and both ends of the piston rod (109) are provided with a push-pull rod (104) and a spring guide rod (110) penetrating the cylinder body (101), the spring guide rod (110) is sleeved with a telescopic spring (112) on the outside, one end of the push-pull rod (104) is provided with a connecting ring (105) connected to a servomotor, the cylinder body (101) is provided with oil inlet and outlet holes for the movement of the locking spindle servomotor, and one end of the cylinder body (101) away from the push-pull rod (104) is fixedly mounted with a mounting plate (102); The adjustment assembly (200) comprises an adjustment plate (201) arranged on a mounting plate (102), and one end of a spring guide rod (110) slides through the adjustment plate (201), and two ends of the telescopic spring (112) respectively contact the adjustment plate (201) and the piston rod (109).

2. The turbine guide vane lock servo according to claim 1, characterized in that: The adjustment assembly (200) further comprises an adjustment threaded hole (202) formed on the adjustment plate (201), and an adjustment screw (204) having one end threadedly connected to the cylinder body (101) is arranged in the adjustment threaded hole (202).

3. The turbine guide vane lock servo according to claim 2, characterized in that: An adjusting nut (203) threadedly connected to the adjusting screw rod (204) is provided on one side of the adjusting plate (201) away from the cylinder body (101).

4. The turbine movable guide vane lock servo according to claim 3, characterized in that: One end of the spring guide rod (110) that passes through the adjustment plate (201) is flattened.

5. The turbine guide vane lock servo according to claim 4, characterized in that: The limiting assembly (100) further comprises a connecting screw (106) fixedly mounted on the connecting ring (105); a threaded hole threadedly connected to the connecting screw (106) is formed at one end of the push-pull rod (104) close to the connecting ring (105); and a limiting nut (107) is threadedly sleeved on the connecting screw (106).

6. The turbine guide vane lock servo according to claim 5, characterized in that: A gasket (108) is provided on the inner side of the connecting ring (105), and the gasket (108) is made of brass.

7. The turbine guide vane lock servo according to claim 6, characterized in that: A closed top cover (103) is detachably mounted on one end of the cylinder body (101) close to the connecting ring (105).

8. The turbine guide vane lock servo according to claim 1, characterized in that: The piston rod (109) is provided with a sealing groove (111), and a sealing ring is provided in the sealing groove (111) and is in contact with the inner wall of the cylinder body (101).

9. The turbine guide vane lock servo according to claim 8, characterized in that: An end of the cylinder body (101) away from the connecting ring (105) is provided with a mounting assembly (300) for fixing the cylinder body (101), and the mounting assembly (300) comprises a mounting bracket (301) arranged on the mounting plate (102), and a mounting groove (302) for the mounting plate (102) to slide is provided on the mounting bracket (301), and a mounting socket (303) is provided in an area of ​​the mounting plate (102) located in the mounting groove (302), and a mounting rod (304) is inserted into the mounting socket (303), and one end of the mounting rod (304) slides through the mounting bracket (301).

10. The turbine guide vane lock servo according to claim 9, characterized in that: A mounting block (305) is provided at the lower part of the mounting bracket (301), and the mounting block (305) and the mounting bracket (301) are detachably connected via bolts.

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