Compression stroke adjusting device for hydroelectric generating set servomotor

Abstract

The invention relates to the technical field of hydroelectric generation, in particular to a hydroelectric generating set servomotor pressing stroke adjusting device which comprises a clamping mechanism, the clamping mechanism comprises a clamping component, and a connecting component is arranged on the clamping component; the transmission mechanism is arranged on the clamping mechanism; the power mechanism is arranged at one end of the transmission mechanism, and the power mechanism can lift the transmission mechanism; through the arrangement of the clamping component and the transmission mechanism, the pressing stroke of the servomotor can be continuously carried out; through the arrangement of the clamping part and the connecting part, the device is convenient to disassemble; particularly, the convex arc face is matched with the concave arc face, so that the first clamping piece and the second clamping piece do not need to be completely separated, installation is facilitated, and storage of the clamping parts is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of hydroelectric power generation, in particular to a device for adjusting the pressing stroke of a servomotor of a hydroelectric generator set. Background Art

[0002] The servomotor is mainly used to control the opening and closing of the turbine guide vanes, thereby regulating the water flow entering the turbine, and then controlling the turbine speed and output power. It is an important device for realizing speed regulation and load regulation in the hydropower generation system. The clamping stroke refers to the situation in which, after the servomotor guide vanes are closed, the servomotor continues to close for an additional stroke in the hydropower generator set to ensure that the guide vanes are completely closed and to prevent the guide vanes from being slightly opened or leaking due to various factors (such as the effect of pressurized water in the volute, deformation of components, gaps at the joints, etc.), so that the guide vanes remain overtightened to a certain extent after closing. This additional stroke is the clamping stroke.

[0003] At present, the method for adjusting the pressing stroke of unqualified servomotors during maintenance of hydro-turbine generators is to manually hit the push-pull rods of the servomotors with a hammer to further tighten the push-pull rods. Due to environmental space and other issues, this adjustment method requires the cooperation of at least three people. There are great safety hazards when hitting with a hammer, and the work efficiency is low. Summary of the invention

[0004] In view of the problem that it is inconvenient to adjust the pressing stroke of the servomotor of a hydroelectric generator set mentioned above or in the prior art, the present invention is proposed.

[0005] Therefore, the object of the present invention is to provide a device for adjusting the pressing stroke of a servomotor of a hydroelectric generator set.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: comprising:

[0007] The clamping mechanism comprises a clamping component, on which a connecting component is provided;

[0008] A transmission mechanism is arranged on the clamping mechanism;

[0009] The power mechanism is arranged at one end of the transmission mechanism, and the power mechanism can lift the transmission mechanism.

[0010] As a preferred solution of the hydraulic generator set relay clamping stroke adjustment device of the present invention, the clamping component includes a first clamping member and a second clamping member, and the first clamping member and the second clamping member are respectively configured as semi-annular shapes and can be enclosed to form a circular ring.

[0011] As a preferred solution of the hydraulic generator set servomotor pressing stroke adjustment device of the present invention, wherein: clamping surfaces are arranged opposite to each other on the inner arc surface of the first clamping member, and the clamping surfaces are parallel to each other;

[0012] A first groove is arranged in the circumferential direction on the outer arc surface of the first clamping member, and one end surface of the first clamping member is arranged as a convex arc surface.

[0013] As a preferred solution of the hydraulic generator set servomotor pressing stroke adjustment device of the present invention, the side surface of the first clamping member is provided with a plurality of first locking holes at intervals and first connecting holes provided at both ends of the side surface.

[0014] As a preferred solution of the hydraulic generator set servomotor pressing stroke adjustment device of the present invention, wherein: a second groove is provided on the outer arc surface of the second clamping member along the annular direction, and the second groove can be connected with the first groove to form an annular groove;

[0015] One end surface of the second clamping member is configured as a concave arc surface, and the convex arc surface is adapted to the concave arc surface.

[0016] As a preferred solution of the hydraulic generator set servomotor pressing stroke adjustment device of the present invention, the side surface of the second clamping member is provided with a plurality of second locking holes at intervals and second connecting holes provided at both ends of the side surface.

[0017] As a preferred solution of the hydraulic generator set servomotor pressing stroke adjustment device of the present invention, the connecting component includes a connecting rib and a pin, and the pin is respectively arranged at both ends of the connecting rib.

[0018] As a preferred solution of the hydraulic generator set relay clamping stroke adjustment device of the present invention, the transmission mechanism includes a transmission rod and a connecting head, the connecting head is C-shaped, and the transmission rod is fixedly connected to the distal end of the C-shaped opening of the connecting head.

[0019] As a preferred solution of the hydraulic generator set servomotor pressing stroke adjustment device of the present invention, the connector is matched with the first groove and the second groove and rotates along the first groove and the second groove.

[0020] As a preferred solution of the hydraulic generator set servomotor pressing stroke adjustment device of the present invention, the power mechanism comprises a support seat, and a plug-in slot is arranged on the top of the support seat.

[0021] The beneficial effects of the hydraulic generator set relay clamping stroke adjustment device of the present invention are as follows: the present invention realizes the continuous operation of the clamping stroke of the relay through the arrangement of the clamping component and the transmission mechanism; the arrangement of the clamping component and the connecting component makes the device easy to disassemble; in particular, the convex arc surface and the concave arc surface are adapted to each other, so that the first clamping member and the second clamping member do not need to be completely separated, which is convenient for installation and storage of the clamping component. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] 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 work.

[0023] Figure 1 It is an overall schematic diagram of the clamping stroke adjustment device of the hydraulic generator set relay.

[0024] Figure 2 It is a schematic diagram of the structure of the clamping component.

[0025] Figure 3 It is a schematic structural diagram of the first clamping member.

[0026] Figure 4 It is a side view of the first clamping member.

[0027] Figure 5 It is a schematic structural diagram of the second clamping member.

[0028] Figure 6 It is a side view of the second clamping member.

[0029] Figure 7 A schematic diagram of the structure of the connecting parts.

[0030] Figure 8 It is a structural diagram of the transmission mechanism.

[0031] Fig. 9 It is a structural diagram of the power mechanism.

[0032] Fig.10 It is a schematic diagram of the hydraulic generator set relay clamping stroke adjustment device clamped on the push-pull rod. DETAILED DESCRIPTION

[0033] 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.

[0034] 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.

[0035] 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.

[0036] Example 1, reference Figures 1 to 7 , which is the first embodiment of the present invention, and which provides a device for adjusting the clamping stroke of a servomotor of a hydroelectric generator set.

[0037] It specifically includes a clamping mechanism 100, which is used to clamp the push-pull rod M and drive the push-pull rod M to rotate.

[0038] It also includes a transmission mechanism 200 which is detachably connected to the clamping mechanism 100 and allows the power output by the power mechanism 300 to act on the clamping mechanism 100.

[0039] And the power mechanism 300 is arranged at one end of the transmission mechanism 200. The power mechanism 300 includes a jack, which can lift the transmission mechanism 200.

[0040] Furthermore, the clamping mechanism 100 includes a clamping component 101 , and a connecting component 102 is bolted to the clamping component 101 , and the connecting component 102 fixes the clamping component 101 as a whole.

[0041] Specifically, the clamping component 101 includes a first clamping member 101a and a second clamping member 101b. The first clamping member 101a and the second clamping member 101b are respectively configured to be semi-annular and can be enclosed to form a circular ring.

[0042] Clamping surfaces 101a-1 are relatively arranged on the inner arc surface of the first clamping member 101a, and the relatively arranged clamping surfaces 101a-1 are parallel to each other; the clamping surfaces 101a-1 correspond to the anti-rotation surfaces Ma arranged on the push-pull rod M. When the clamping component 101 is clamped on the push-pull rod M, the clamping surfaces 101a-1 on both sides respectively abut against the anti-rotation surfaces Ma; when the clamping component 101 rotates around the push-pull rod M, due to the interaction between the clamping surfaces 101a-1 and the anti-rotation surfaces Ma, the push-pull rod M can rotate synchronously with the clamping component 101.

[0043] Furthermore, a first groove 101a-5 is annularly arranged on the outer arc surface of the first clamping member 101a, and a second groove 101b-3 is annularly arranged on the outer arc surface of the second clamping member 101b. When the first clamping member 101a and the second clamping member 101b are docked and enclosed to form a complete ring, the first groove 101a-5 and the second groove 101b-3 are closed to form a complete annular groove, so that the connecting head 202 can rotate around the clamping member 101 in the complete annular groove formed by the closure of the first groove 101a-5 and the second groove 101b-3.

[0044] It should be noted that, in order to facilitate the docking of the first clamping member 101a and the second clamping member 101b, the two end surfaces of the first clamping member 101a and the second clamping member 101b are respectively processed into straight surfaces.

[0045] In order to facilitate the fixed connection and disassembly of the first clamping member 101a and the second clamping member 101b, the present invention further provides a connecting component 102, which includes a connecting rib 102a and a pin 102b. The pin 102b is respectively provided at both ends of the connecting rib 102a.

[0046] Specifically, the connecting ribs 102a are provided in two pieces, which are respectively located on both sides of the first clamping member 101a and the second clamping member 101b. The pin shaft 102b at one end passes through the first connecting hole 101a-4 between the connecting rib 102a and the first clamping member 101a, and the pin shaft 102b at the other end passes through the second connecting hole 101b-2 between the connecting rib 102a and the second clamping member 101b, so that the first clamping member 101a and the second clamping member 101b are fixedly connected by the connecting component 102.

[0047] It is conceivable that the connecting member 102 needs to be provided in two groups in order to achieve the purpose of fixing the first clamping member 101a and the second clamping member 101b.

[0048] Example 2, reference Figure 2 , 3 5 is the second embodiment of the present invention. Different from the previous embodiment, this embodiment provides another docking method for the clamping parts of the hydraulic generator set relay clamping stroke adjustment device, which further improves the convenience of operation of the device.

[0049] Specifically, one end face of the first clamping member 101a is processed into a convex arc surface 101a-3, and the other end face is processed into a plane; the end face of the second clamping member 101b corresponding to the convex arc surface 101a-3 is set as a concave arc surface 101b-1, and the other end face is also processed into a plane; the convex arc surface 101a-3 is connected to the concave arc surface 101b-1.

[0050] When the clamping mechanism 100 needs to be clamped on the push-pull rod M, the connecting component 102 at the straight end of the first clamping member 101a and the second clamping member 101b is removed, and the other end is connected by the connecting component 102, so that the concave arc surface 101b-1 and the convex arc surface 101a-3 form a hinged connection, so that the second clamping member 101b is rotated relative to the convex arc surface 101a-3, so that the opening of the first clamping member 101a is completely exposed, thereby achieving incomplete separation of the first clamping member 101a and the second clamping member 101b, and the first clamping member 101a can be sleeved on the push-pull rod M.

[0051] Then, the second clamping member 101b is rotated back along the convex arc surface 101a-3 so that the straight surfaces at the other ends of the two are butted against each other, and the connecting member 102 is locked again, thereby completing the clamping and locking of the clamping mechanism 100 and the push-pull rod M.

[0052] Example 3, reference Figures 8 to 10 , which is the third embodiment of the present invention. Different from the previous embodiment, this embodiment provides a transmission method and a power mechanism, which solves the problem of the power for providing the push-pull rod pre-tightening force of the device, including the clamping mechanism in the above embodiment.

[0053] Specifically, the device further includes a transmission mechanism 200 , which includes a transmission rod 201 and a connector 202 . The connector 202 is C-shaped, and the transmission rod 201 is fixedly connected to the connector 202 in the opposite direction of the C-shaped opening.

[0054] Furthermore, the first clamping member 101a is provided with first locking holes 101a-2 at equal intervals, and the first locking holes 101a-2 pass through the side walls on both sides of the first groove 101a-5. The second clamping member 101b is provided with second locking holes 101b-4 at equal intervals, and the second locking holes 101b-4 pass through the side walls on both sides of the second groove 101b-3. At the same time, the first locking holes 101a-2 and the second locking holes 101b-4 are also provided at equal intervals. For the sake of convenience of description, the first locking holes 101a-2 and the second locking holes 101b-4 are collectively referred to as locking holes below.

[0055] It should be noted that the spacing between the locking holes is equal to the chord length of the connector 202 .

[0056] Taking into account the actual situation of adjusting the angle of the transmission mechanism 200 , the span of the plurality of locking holes may also be set to be equal to the chord length of the connector 202 .

[0057] The C-shaped opening of the connecting head 202 is compatible with the first groove 101a-5 and the second groove 101b-3. When the first clamping member 101a is fixedly connected to the second clamping member 101b, the connecting head 202 is embedded in the circular ring groove formed by the first groove 101a-5 and the second groove 101b-3. When the transmission mechanism 200 needs to be fixed to the clamping component 101, bolts are passed through the corresponding first locking holes 101a-2 or the second locking holes 101b-4 and the through holes at both ends of the connecting head 202 and locked to complete the fixed connection between the transmission mechanism 200 and the clamping component 101. When the relative angle between the transmission mechanism 200 and the clamping component 101 needs to be changed, the bolts are unscrewed, and the connecting head 202 can be rotated circumferentially along the circular ring groove formed by the first groove 101a-5 and the second groove 101b-3, and then locked with bolts.

[0058] The device further includes a power mechanism 300 , which includes a jack. A support seat 301 is installed on the top of the jack. A plug-in slot 302 is opened on the top of the support seat 301 . The power mechanism 300 can provide power for the rotation of the clamping mechanism 100 .

[0059] Specifically, after the clamping mechanism 100 is fixedly connected to the transmission mechanism 200, the other end of the transmission rod 201 is inserted into the insertion groove 302, and forms a rotational connection with the support seat 301 through the pin shaft; after the jack is raised, the hinged end of the transmission rod 201 and the support seat 301 is raised, the transmission rod 201 drives the connecting head 202 to change the current angle, and the connecting head 202 drives the clamping mechanism 100 to rotate synchronously.

[0060] When in use, first assemble the device; clamp the clamping mechanism 100 on the push-pull rod M, and make the clamping surface 101a-1 abut against the anti-rotation surface Ma;

[0061] Second, operate the jack, which lifts up the transmission rod 201. Since the other end of the transmission rod 201 is fixedly connected to the clamping component 101 through the connector 202, and the clamping mechanism 100 is fixedly connected to the push-pull rod M, the transmission mechanism 200 forms a rotation connection with the center of the push-pull rod M. As the jack pushes the transmission rod 201 upward, the other end of the transmission rod 201 drives the push-pull rod M to rotate through the clamping component 101 to meet the servomotor compression stroke requirement;

[0062] Third, affected by the assembly relationship, the transmission rod 201 can only rotate to a certain angle; therefore, when the transmission rod 201 rotates to the limit, the bolts between the connector 202 and the first clamping member 101a and / or the second clamping member 101b are unscrewed, so that the connector 202 rotates along the first groove 101a-5 and / or the second groove 101b-3 to meet the requirement that the jack drives the transmission rod 201 to reset, and then the connector 202 is locked with the first clamping member 101a and / or the second clamping member 101b with bolts;

[0063] Repeat the second and third steps until the servomotor pressing stroke is satisfied; finally, remove the connecting component 102 and remove the clamping component 101 for reuse.

[0064] In summary, the device enables the operation of the servomotor's pressing stroke to be carried out continuously through the arrangement of the clamping component 101 and the transmission mechanism 200; the arrangement of the clamping component 101 and the connecting component 102 makes the device easy to disassemble; in particular, the convex arc surface 101a-3 and the concave arc surface 101b-1 are adapted to each other, so that the first clamping member 101a and the second clamping member 101b do not have to be completely separated to be clamped and installed, which is convenient for installation and storage of the clamping component 101.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] 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 device for adjusting the pressing stroke of a servomotor of a hydroelectric generator set, characterized in that: include, A clamping mechanism (100) comprises a clamping component (101), wherein a connecting component (102) is provided on the clamping component (101); A transmission mechanism (200) is arranged on the clamping component (101); The power mechanism (300) is arranged at one end of the transmission mechanism (200), and the power mechanism (300) can lift the transmission mechanism (200).

2. The device for adjusting the pressing stroke of the servomotor of a hydroelectric generator set according to claim 1, characterized in that: The clamping component (101) comprises a first clamping piece (101a) and a second clamping piece (101b); the first clamping piece (101a) and the second clamping piece (101b) are respectively arranged in a semi-ring shape and can be enclosed to form a circular ring.

3. The device for adjusting the pressing stroke of the servomotor of a hydroelectric generator set according to claim 2, characterized in that: Clamping surfaces (101a-1) are arranged opposite to each other on the inner arc surface of the first clamping member (101a), and the clamping surfaces (101a-1) are parallel to each other; A first groove (101a-5) is provided on the outer arc surface of the first clamping member (101a) in an annular direction, and one end surface of the first clamping member (101a) is provided as a convex arc surface (101a-3).

4. The device for adjusting the pressing stroke of the servomotor of a hydroelectric generator set according to claim 3, characterized in that: The side surface of the first clamping member (101a) is provided with a plurality of first locking holes (101a-2) at intervals and first connecting holes (101a-4) are provided at both ends of the side surface.

5. The device for adjusting the pressing stroke of the servomotor of a hydroelectric generator set according to claim 4, characterized in that: A second groove (101b-3) is provided on the outer arc surface of the second clamping member (101b) in an annular direction, and the second groove (101b-3) can be butted and closed with the first groove (101a-5) to form an annular groove; One end surface of the second clamping member (101b) is configured as a concave arc surface (101b-1), and the convex arc surface (101a-3) is adapted to the concave arc surface (101b-1).

6. The device for adjusting the pressing stroke of the servomotor of a hydroelectric generator set according to claim 5, characterized in that: The side surface of the second clamping member (101b) is provided with a plurality of second locking holes (101b-4) at intervals and second connecting holes (101b-2) provided at both ends of the side surface.

7. The device for adjusting the pressing stroke of the servomotor of a hydroelectric generator set according to claim 1, characterized in that: The connecting component (102) comprises a connecting rib (102a) and a pin (102b), wherein the pin (102b) is respectively arranged at two ends of the connecting rib (102a).

8. The device for adjusting the pressing stroke of the servomotor of a hydroelectric generator set according to claim 1, characterized in that: The transmission mechanism (200) comprises a transmission rod (201) and a connecting head (202); the connecting head (202) is C-shaped, and the transmission rod (201) is fixedly connected to the distal end of the C-shaped opening of the connecting head (202).

9. The device for adjusting the pressing stroke of the servomotor of a hydroelectric generator set according to claim 8, characterized in that: The connecting head (202) is adapted to the first groove (101a-5) and the second groove (101b-3), and rotates along the first groove (101a-5) and the second groove (101b-3).

10. The device for adjusting the pressing stroke of the servomotor of a hydroelectric generator set according to any one of claims 1 to 9, characterized in that: The power mechanism (300) comprises a support seat (301), and a plug-in slot (302) is provided on the top of the support seat (301).

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