Mounting structure and hydraulic turbine set rotating speed measuring device

Abstract

The utility model relates to the technical field of rotating speed measurement, in particular to a mounting structure and a water turbine set rotating speed measuring device, which comprise a connecting unit, the connecting unit comprises a module support, a clamping limit, a limit connecting plate and a limit component, the clamping limit is arranged in the module support, the limit connecting plate is arranged on the clamping limit, and the limit component is arranged on the limit connecting plate. A limiting assembly is arranged on the outer side of the limiting connecting plate, a guiding clamping groove is formed in the fixing support, a damping connector is arranged in the guiding clamping groove, a camera module is arranged in the fixing support, the camera module is installed and fixed in a sleeving connection mode, the camera module is convenient to install and connect, and the camera module is convenient to install and connect. According to the camera module, the positioning structures in mutual linkage are adopted in the camera module, the camera module can be stably connected with the mounting structure in a sleeving mode while the camera module can adapt to camera modules of different sizes, meanwhile, in cooperation with an internal damping buffer structure, the influence of vibration on the camera module during data recording is reduced, and the accuracy of data collection of the camera module is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rotation speed measurement, in particular to a mounting structure and a rotation speed measuring device for a water turbine unit. Background Art

[0002] Accurately measuring the speed signal of a hydro-turbine generator set plays a very important role in improving the stability of the unit control system and the power grid. Currently, there are two main methods for measuring the speed of a hydro-turbine generator set. One is the PT speed measurement method, which measures the speed by collecting the output voltage frequency through a voltage transformer. The other is to measure the speed by capturing pulses through a gear disk installed on the main shaft.

[0003] In practical applications, the PT speed measurement method is prone to speed measurement abnormalities and failures due to factors such as blown fuses, loose joints and poor contact, burned-out protection circuit breakers, secondary overloads, and insulation degradation. The speed measurement method that uses a toothed disc requires the installation of mechanical structures and signal sensors on the unit. Affected by the vibration of the main shaft, the mechanical failure rate is high, and the signal interface is prone to problems such as loose joints and poor circuit contact. At the same time, the speed measurement accuracy of the toothed disc is low at low speeds.

[0004] When collecting data, non-contact data collection devices are susceptible to vibration, which may cause the images collected by the data collection device to be blurred, affect the reading of the collected data, and reduce the accuracy of the data. Utility Model Content

[0005] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0006] In view of the problem that the images collected by the collection device are blurred due to vibrations in the above or prior art, thereby reducing the accuracy of data, the present utility model is proposed.

[0007] Therefore, the purpose of the utility model is to provide a mounting structure.

[0008] In order to solve the technical problem in the above-mentioned prior art that the image collected by the collection device is blurred due to vibration, thereby reducing the accuracy of the data, the utility model provides the following technical solution: a mounting structure, comprising:

[0009] The connecting unit includes a module bracket, a clamping limiter, a limit connecting plate and a limit assembly. The module bracket is provided with a clamping limiter, the clamping limiter is provided with a limit connecting plate, and the limit assembly is provided on the outer side of the limit connecting plate.

[0010] As a preferred solution of the installation structure of the utility model, the clamping limit includes a linkage guide rod and a mounting spring, the clamping limit is connected to the limit connecting plate through the linkage guide rod, and a mounting spring is provided at one end of the linkage guide rod away from the limit connecting plate.

[0011] As a preferred solution of the installation structure of the utility model, wherein: a guide through hole is reserved in the module bracket, and the position of the guide through hole corresponds to the position of the linkage guide rod.

[0012] As a preferred solution of the installation structure of the utility model, wherein: one end of the limit connecting plate is provided with an inclined surface structure, the limit inclined plate is provided on the limit assembly, and the size of the limit connecting plate and the size of the limit inclined plate are mutually adapted.

[0013] As a preferred solution of the installation structure of the utility model, the limiting assembly includes a linkage rod, a limiting arm and a locking groove, the limiting assembly is provided with a linkage rod, the linkage rod is provided with a limiting arm, and the locking groove is provided in the limiting arm.

[0014] Beneficial effects of the installation structure of the utility model:

[0015] The camera module is installed and fixed by a socket-type connection method, which facilitates the installation and connection of the camera module. The internal positioning structure is interconnected, which can adapt to camera modules of different sizes while being stably socket-connected to the installation structure. At the same time, the internal damping buffer structure reduces the impact of vibration on the camera module when recording data, thereby improving the accuracy of data collected by the camera module.

[0016] In actual use, the PT speed measurement method is prone to speed measurement anomalies and failures, and the toothed disc speed measurement method has low speed measurement accuracy at low speeds.

[0017] In order to solve the technical problems that the above-mentioned PT speed measurement method is prone to speed measurement abnormalities and failures, and the speed measurement method of the toothed disc has low speed measurement accuracy at low speeds, the utility model also provides the following technical solutions: a turbine unit speed measuring device, a fixed bracket, a connecting unit is arranged in the fixed bracket, the fixed bracket includes a guide slot, a camera module and a damping connecting plate, a guide slot is opened in the fixed bracket, a damping connecting plate is arranged in the guide slot, and a camera module is arranged in the fixed bracket.

[0018] As a preferred solution of the turbine unit speed measuring device of the utility model, two groups of mounting buckles are arranged on the outer side of the fixed bracket, the guide slots are arranged as inclined structures, and two groups of guide slots are symmetrically arranged in the fixed bracket.

[0019] As a preferred solution of the turbine unit speed measuring device of the utility model, wherein: the damping connecting plate is symmetrically arranged about the guide slot, the damping connecting plate includes a limiting protrusion and a damping connecting rod, one end of the damping connecting plate is provided with a limiting protrusion, and the end of the damping connecting plate close to the limiting protrusion is provided with a damping connecting rod.

[0020] As a preferred solution of the water turbine unit speed measuring device of the utility model, wherein: the damping connecting plate is arranged on the fixed bracket through the guide groove.

[0021] As a preferred solution of the turbine unit speed measuring device of the utility model, wherein: a connecting blind hole is reserved in the fixed bracket, a connecting spring is arranged in the connecting blind hole, and the position of the connecting blind hole corresponds to the position of the guide slot.

[0022] The beneficial effects of the water turbine unit speed measuring device of the utility model are as follows:

[0023] A non-contact speed measurement method is adopted, and a mark for speed measurement is added to the turbine shaft. Under the recording of the camera module, the speed is measured by comparing the mark position. A damping buffer structure is also added to reduce the shaking of the camera module, thereby reducing the impact of turbine shaking on camera module data acquisition and improving the accuracy of collected data. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following is a brief introduction to the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0026] Figure 2 is a schematic diagram of the cross-sectional structure of the fixed bracket;

[0027] Figure 3 This is a schematic diagram of the split structure of the camera module;

[0028] Figure 4 Schematic diagram of the internal structure of the camera module;

[0029] Figure 5 A schematic diagram of the internal structure of the guide slot;

[0030] Figure 6 It is a schematic diagram of the overall structure of the limit assembly;

[0031] Figure 7 Schematic diagram of the overall structure of the damping link plate. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned purposes, 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.

[0033] 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.

[0034] 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 is it an embodiment that is mutually exclusive with other embodiments, either individually or selectively.

[0035] Example 1

[0036] Reference Figure 1 , which is the first embodiment of the utility model, and provides a mounting structure, which is used to mount and fix the camera module through a sleeve-type connection method, so as to facilitate the installation and connection of the camera module. The internal positioning structure is mutually linked, and can be stably sleeve-connected with the mounting structure while adapting to camera modules of different sizes. At the same time, the internal damping buffer structure is used to reduce the impact of vibration on the camera module when recording data, thereby improving the accuracy of the camera module collecting data. It includes a connecting unit 100, a connecting unit 100 It includes a module bracket 101, a clamping limit 102, a limit connecting plate 103 and a limit assembly 105. The clamping limit 102 is arranged inside the module bracket 101, the limit connecting plate 103 is arranged on the clamping limit 102, and the limit assembly 105 is arranged outside the limit connecting plate 103. The internal module is installed and connected through a sleeve-type connection structure. When installing it, the clamping limit 102, the limit connecting plate 103 and the limit assembly 105 cooperate with each other to better fix and position the module, so that it can be installed and fixed more stably;

[0037] A fixed bracket 200 is provided with a connecting unit 100, and the fixed bracket 200 includes a guide slot 202, a camera module 203 and a damping connecting plate 204. The fixed bracket 200 is provided with a guide slot 202, and a damping connecting plate 204 is provided in the guide slot 202. The fixed bracket 200 is provided with a camera module 203, and the damping connecting plate 204 provided inside is used for buffering and shock absorption. After the camera module 203 is installed, the limit on the damping connecting plate 204 will be released, so that it can cooperate with the damping connecting rod 204b installed on the damping connecting plate 204 for buffering and shock absorption, so as to keep the camera module 203 to better perform image acquisition work and make the acquired data more accurate.

[0038] When in use, first install the fixed bracket 200 in a position where the turbine shaft mark can be observed through the installation buckle 201 on the outside of the fixed bracket 200. After the installation is completed, install the module bracket 101 into the fixed bracket 200 through the guide slot 202. When the module bracket 101 and the guide slot 202 are in contact with each other, with the cooperation of the clamping limit 102 and the limit connecting plate 103, the clamping limit 102 can be driven to move inward, and then the camera module 203 used for measurement and observation is placed in the module bracket 101. With the cooperation of the clamping limit 102, the installation and connection of the camera module 203 is completed.

[0039] Example 2

[0040] Reference Figure 3 to Figure 5 , which is the second embodiment of the utility model. Different from the previous embodiment, this embodiment provides an installation structure to solve the problem that the image collected by the acquisition device is blurred due to vibration, thereby reducing the accuracy of the data. The clamping limit 102 includes a linkage guide rod 102a and a mounting spring 102b. The clamping limit 102 is connected to the limit connecting plate 103 through the linkage guide rod 102a. The end of the linkage guide rod 102a away from the limit connecting plate 103 is provided with a mounting spring 102b. A guide through hole 104 is reserved in the module bracket 101. The position of the guide through hole 104 corresponds to the position of the linkage guide rod 102a. The clamping limit 102 with an inclined surface structure design is used to limit and fix the camera module 203. The inclined surface structure can adapt to more camera modules 203 of different sizes. At the same time, when installing, the limit connecting plate 103 will be pushed outward so that the limit connecting plate 103 can contact the structure inside the guide slot 202, thereby completing the installation limit.

[0041] Preferably, an inclined surface structure is arranged at one end of the limiting connecting plate 103, and a limiting inclined plate 105a is arranged on the limiting assembly 105. The size of the limiting connecting plate 103 and the size of the limiting inclined plate 105a are mutually adapted, and the installation connection is completed by the mutual contact between the limiting connecting plate 103 and the limiting inclined plate 105a under the action of the device's own gravity;

[0042] Furthermore, the limit assembly 105 includes a linkage rod 105b, a limit arm 105c and a locking groove 105d. The limit assembly 105 is provided with a linkage rod 105b, and the linkage rod 105b is provided with a limit arm 105c. The limit arm 105c is provided with a locking groove 105d. When the limit inclined plate 105a and the limit connecting plate 103 contact each other, they will move inward due to external force. At the same time as the limit assembly 105 moves inward, the connection between the locking groove 105d on the limit connecting arm 105c and the limit protrusion 204a will be released through the linkage rod 105b, so that the damping connecting plate 204 can perform shock absorption and buffering work.

[0043] During use, when installing the camera module 203, the camera module 203 is continuously pushed downward to make its outer wall contact with the clamping limit 102. Since the clamping limit 102 adopts an inclined structure, when the camera module 203 moves downward continuously, the distance between the clamping limit 102 becomes smaller as it moves downward, thereby limiting the installation of the camera module 203. After the installation of the camera module 203 is completed, the limit connecting plate 103 that is linked to the clamping limit 102 will also move outward. After the module bracket 101 and the guide slot 202 are connected to each other, the limit connecting plate 103 will contact the limit inclined plate 105a installed inside the guide slot 202. The limit inclined plate 105a and the limit connecting plate 103 are both arranged with an inclined surface structure. Under the continuous downward action of the limit connecting plate 103, the limit inclined plate 105a will drive the limit assembly 105 to move inward, thereby releasing the connection between the locking groove 105d and the limit protrusion 204a, allowing the damping link 204b to perform buffering.

[0044] Example 3

[0045] Reference Figure 2 and Figure 6-7, which is the third embodiment of the utility model. Different from the previous embodiment, this embodiment solves the problem that the PT speed measurement method is prone to abnormal speed measurement and failure, and the speed measurement method of the toothed disc has low speed measurement accuracy at low speed. It includes two groups of mounting buckles 201 arranged on the outer side of the fixed bracket 200, the guide slot 202 is arranged in an inclined structure, and the guide slot 202 is symmetrically arranged in two groups in the fixed bracket 200. The damping connecting plate 204 is symmetrically arranged about the guide slot 202, and the damping connecting plate 204 includes a limiting protrusion 204a and a damping connecting rod 204b. A limiting protrusion 204a is provided at one end of the damping connecting plate 204, and a damping connecting rod 204b is provided at one end of the damping connecting plate 204 close to the limiting protrusion 204a. The damping connecting plate 204 disposed inside the guide slot 202 can be connected to the module bracket 101. When working, the damping connecting rod 204b disposed on the back of the damping connecting plate 204 can be used for buffering and shock absorption, so that the module bracket 101 and the camera module 203 installed therein can be reset more quickly when affected by vibration, thereby better performing data measurement;

[0046] Preferably, the damping connecting plate 204 is arranged on the fixed bracket 200 through the guiding through groove 206, and a connecting blind hole 205 is reserved in the fixed bracket 200. A connecting spring 205a is arranged in the connecting blind hole 205, and the position of the connecting blind hole 205 corresponds to the position of the guiding slot 202. By connecting the connecting spring 205a inside the connecting blind hole 205 and the limiting assembly 105, after the internal camera module 203 is disassembled, the damping connecting plate 204 can be ejected and fixed by re-connecting the locking groove 105d with the limiting protrusion 204a, so that when the re-installation work is carried out, the damping connecting plate 204 can better contact with the module bracket 101 to better perform buffering and shock absorption.

[0047] When in use, when the limit assembly 105 moves inward to squeeze the connecting spring 205a under the action of the limit connecting plate 103, the connection between the locking groove 105d connected to the limit connecting arm 105c and the limit protrusion 204a on the damping connecting plate 204 is released, so that the damping connecting plate 204 has a larger movement stroke and better buffering work, and then the rotation speed of the turbine shaft is measured through the camera module 203 connected to the inside of the module bracket 101.

[0048] Importantly, it should be noted that the construction and arrangement of the present application shown in a number 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, for example, the size, scale, structure, shape and proportion of various elements, and parameter values ​​such as temperature, pressure, etc., mounting arrangements, 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 utility model. 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 the execution function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present utility model, 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 several modifications still falling within the scope of the appended claims.

[0049] Furthermore, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment may not be described, i.e., those features that are not relevant to the best mode presently contemplated for carrying out the invention or those features that are not relevant to implementing the invention.

[0050] It should be understood 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 for those of ordinary skill having the benefit of this disclosure, the development effort will be a routine task of design, fabrication, and production without undue experimentation.

[0051] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A mounting structure, characterized in that: include, A connection unit (100), the connection unit (100) comprising a module support (101), a clamping limiter (102), a limit connecting plate (103) and a limit assembly (105), the module support (101) being provided with a clamping limiter (102), the clamping limiter (102) being provided with a limit connecting plate (103), and the limit assembly (105) being provided outside the limit connecting plate (103).

2. The mounting structure according to claim 1, characterized in that: The clamping limiter (102) comprises a linkage guide rod (102a) and a mounting spring (102b); the clamping limiter (102) is connected to a limit connecting plate (103) via the linkage guide rod (102a); and a mounting spring (102b) is provided at one end of the linkage guide rod (102a) away from the limit connecting plate (103).

3. The mounting structure according to claim 2, characterized in that: A guide through hole (104) is reserved in the module bracket (101), and the position of the guide through hole (104) corresponds to the position of the linkage guide rod (102a).

4. The mounting structure according to claim 3, characterized in that: One end of the limit connecting plate (103) is provided with an inclined surface structure, and the limit component (105) is provided with a limit inclined plate (105a), and the size of the limit connecting plate (103) and the size of the limit inclined plate (105a) are mutually adapted.

5. The mounting structure according to any one of claims 1 to 4, characterized in that: The position limiting component (105) comprises a linkage connecting rod (105b), a position limiting connecting arm (105c) and a locking groove (105d); the linkage connecting rod (105b) is arranged on the position limiting component (105); the position limiting connecting arm (105c) is arranged on the linkage connecting rod (105b); and the locking groove (105d) is arranged in the position limiting connecting arm (105c).

6. A water turbine unit speed measuring device, characterized in that: The invention comprises the installation structure according to any one of claims 1 to 5, and a fixed bracket (200), wherein a connecting unit (100) is arranged inside the fixed bracket (200), the fixed bracket (200) comprises a guide slot (202), a camera module (203) and a damping connecting plate (204), a guide slot (202) is opened inside the fixed bracket (200), a damping connecting plate (204) is arranged inside the guide slot (202), and a camera module (203) is arranged inside the fixed bracket (200).

7. The water turbine unit speed measuring device according to claim 6, characterized in that: Two groups of mounting buckles (201) are arranged on the outside of the fixing bracket (200), the guide slots (202) are arranged in an inclined structure, and two groups of guide slots (202) are symmetrically arranged in the fixing bracket (200).

8. The water turbine unit speed measuring device according to claim 7, characterized in that: The damping connecting plate (204) is symmetrically arranged with respect to the guide slot (202), and comprises a limiting protrusion (204a) and a damping connecting rod (204b); one end of the damping connecting plate (204) is provided with the limiting protrusion (204a), and one end of the damping connecting plate (204) close to the limiting protrusion (204a) is provided with the damping connecting rod (204b).

9. The water turbine unit speed measuring device according to claim 8, characterized in that: The damping connecting plate (204) is arranged on the fixing bracket (200) via a guide through slot (206).

10. The water turbine unit speed measuring device according to any one of claims 6 to 9, characterized in that: A connecting blind hole (205) is reserved in the fixing bracket (200), a connecting spring (205a) is arranged in the connecting blind hole (205), and the position of the connecting blind hole (205) corresponds to the position of the guide slot (202).

Images