Tool for installing and adjusting fluted disc probe of hydropower station

Abstract

The utility model relates to a tool for installing and adjusting a fluted disc probe of a hydropower station. The tool can quickly complete the installation of the fluted disc probe and the adjustment of the distance between the fluted disc probe and the concave surface and the convex surface of a fluted disc under the condition that a water turbine unit is not started. The integrated fluted disc speed measuring device is ingenious in design, reasonable in layout and easy to mount and dismount, the measuring precision of the fluted disc speed measuring device can be effectively improved, and interference is reduced.

Description

Technical Field

[0001] The utility model relates to the field of installation and adjustment of speed measurement devices in hydropower stations, and particularly relates to a tool for installing and adjusting a toothed disk probe in a hydropower station. Background Art

[0002] For the speed governor system and monitoring system of the Kaplan turbine unit in a hydropower station, the unit speed signal needs to be collected through a toothed disk speed measurement device. However, in the hydropower station powerhouse, the installation and adjustment of the toothed disk probe of the toothed disk speed measurement device are difficult points. The probe cannot verify the speed in the shutdown state. If the installation distance between the toothed disk probe and the toothed disk is too small or too large, or the vertical position between the toothed disk probe and the toothed disk is improper, it will affect the accuracy of the toothed disk speed measurement in the startup state.

[0003] The traditional installation and adjustment of the toothed disk probe is to determine the installation position through a spirit level, a feeler gauge, and a tape measure, and the effect of precise positioning cannot be achieved. There is no special tool for determining the installation position of the toothed disk probe and adjusting the distance between the toothed disk probe and the toothed disk. It mainly depends on the personal experience and skills of the person in charge of the work, and the random error is relatively large. It is difficult to ensure the stability of the work quality, and the requirements for work acceptance and inspection are relatively high.

[0004] Especially, the ranging probe cannot accurately maintain a precise distance of up to 0.1 mm level from the concave surface of the integrated toothed disk. Each probe takes the detection signals reflected by the concave surface C and the convex surface B as a cycle, so as to measure the speed of the toothed disk according to the induction signal. When installed too close, the integrated toothed disk will hit and damage the probe. At the same time, when installed too close, the toothed disk probe will combine two or more signals into one signal, resulting in a deviation in speed measurement. When the probe is too far away, the probe cannot effectively sense the detection signal. Therefore, the probe needs to be installed at an accurate distance to accurately measure the speed of the toothed disk. Summary of the Utility Model

[0005] The utility model aims to solve the problem of quickly installing the toothed disk probe of the toothed disk speed measurement device in the shutdown state of the Kaplan turbine unit in a hydropower station, and solve the problem of accurately adjusting the distance between the toothed disk probe and the integrated toothed disk.

[0006] To solve the above problems, the present application is realized through the following technical solutions:

[0007] A tool for installing and adjusting a toothed disk probe in a hydropower station, including an integrated toothed disk, on which a plurality of first structural members, a plurality of second structural members, and a plurality of third structural members are installed. Each first structural member and each second structural member are respectively in close contact with the inner walls of two toothed disk grooves of the integrated toothed disk, and each third structural member is in close contact with the convex side wall of the integrated toothed disk. One side wall of the second structural member is in close contact with the side wall of the first toothed disk probe. The first toothed disk probe is fixedly connected to the probe bracket through a fastening nut, and the probe bracket is also equipped with a second toothed disk probe and a third toothed disk probe.

[0008] One end of the probe bracket is fixedly connected to a fixed block.

[0009] The thickness of each of the first structural members is equal to the groove tooth thickness of the integrated gear disk, the bending radian of the first structural member is equal to the bending radian of the groove of the integrated gear disk, and the height of the first structural member is equal to the groove tooth depth of the integrated gear disk.

[0010] The thickness of each of the second structural members is greater than the groove tooth thickness of the integrated gear disk, the bending radian of the second structural member is equal to the bending radian of the groove of the integrated gear disk, and the height of the second structural member is equal to the groove tooth depth of the integrated gear disk.

[0011] The thickness of each of the third structural members is equal to the difference between the thicknesses of the second structural member and the first structural member; the bending radian of the third structural member is equal to the bending radian of the convex side wall of the integrated gear disk, and the height of the third structural member is equal to the groove tooth depth of the integrated gear disk.

[0012] Each of the first gear disk probes, the second gear disk probes, and the third gear disk probes is equipped with a fastening nut, and the first gear disk probes, the second gear disk probes, and the third gear disk probes are all fixedly connected to the probe bracket through the fastening nuts.

[0013] The outer walls of each of the first structural members, the second structural members, and the third structural members are all made of stainless steel, and magnets are embedded inside each of the first structural members, the second structural members, and the third structural members.

[0014] Each of the first structural members and the second structural members is adsorbed on the inner wall of the groove of the integrated gear disk by a magnet.

[0015] Each of the third structural members is adsorbed on the convex side wall of the integrated gear disk by a magnet.

[0016] Each of the first gear disk probes, the second gear disk probes, and the third gear disk probes is installed in the upper middle part of the integrated gear disk.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] 1. The three structural members designed in the present utility model: the first structural member is a structural member with the same size as the groove concave surface tooth depth, tooth thickness, and radian of the integrated gear disk. The thickness of the second structural member is greater than the groove concave surface tooth thickness of the integrated gear disk, and the height and radian of the second structural member are equal to the groove tooth height and radian of the integrated gear disk. The thickness of the third structural member is the difference between the thicknesses of the second structural member and the first structural member. The thickness of the third structural member is the distance between the gear disk probe and the convex integrated gear disk, which is the distance that actually needs to be adjusted. The first structural member, the second structural member, and the third structural member are all made of stainless steel, which can meet the harsh on-site environment; the third structural member is used to check the distance later, and the first structural member is used for testing the probe.

[0019] 2. The second and third components can simultaneously meet the installation and inspection requirements of the gear disc probe for the concave and convex surfaces of the gear disc, achieving the purpose of rapid installation and inspection, and effectively improving the safety and stability of the gear disc speed measurement signal.

[0020] 3. The second and third components are reasonably designed, eliminating the need for repeated maintenance and debugging processes of starting - stopping - starting.

[0021] 4. The second and third components improve the installation efficiency and measurement accuracy.

[0022] 5. Using this device as an auxiliary tool, through the combination of the second and third components with the first, second, and third gear disc probes, the distance between the gear disc probe and the integrated gear disc can be quickly and accurately positioned and adjusted. Most preferably, the positioning distance is 2.5 mm, which is the thickness of the third component, accurate to the 0.1 mm level, and there is no need to use a caliper and feeler gauge for auxiliary measurement.

[0023] 6. When installing the first component on all the grooves of the integrated gear disc, the integrated gear disc and the first component form a cylinder. Using the third component to check the installation positions of all the probes can replace the conventional caliper and feeler gauge verification and inspection, saving the verification and inspection time of the probe positions.

[0024] 7. The outer walls of each first, second, and third component are made of stainless steel, and magnets are inlaid inside the components. When taking, the components are adsorbed on the integrated gear disc, which is very convenient to use. The installation and verification steps are very simple, saving the working time of installing and verifying the gear probe and improving the installation efficiency. Moreover, the distance accuracy between the probe and the integrated gear disc during installation is high, avoiding the distance error during manual installation of the probe. Brief Description of the Drawings

[0025] Figure 1 It is a schematic diagram of the overall structure of the installation and adjustment tool for the gear disc probe in a hydropower station.

[0026] Figure 2 It is a schematic top - view structure diagram of the connection between the gear disc and the probe in a hydropower station.

[0027] Figure 3 It is a schematic top - view structure diagram of the connection part A between the gear disc and the probe in a hydropower station.

[0028] Reference Numerals: Integrated gear disc 1, First component 2, Second component 3, First gear disc probe 4, Second gear disc probe 5, Probe support 6; Third gear disc probe 7, Third component 8; Fixed block 9;

[0029] B represents the convex side wall of the integrated gear disk 1, and C represents the concave side wall of the integrated gear disk 1; the thickness of the first structural member 2 is D1, the thickness of the second structural member 3 is D2, and the thickness of the third structural member 8 is D3. Detailed implementation mode

[0030] It should be understood that the orientation or positional relationship indicated by terms such as "upper, inner wall, one side, side wall, one end" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. The gear disk speed measuring device is connected to the sensors of the first gear disk probe 4, the second gear disk probe 5 and the third gear disk probe 7 through a data line; the gear disk speed measuring device, the first gear disk probe 4, the second gear disk probe 5 and the third gear disk probe 7 are all provided with power lines to be externally powered. The present invention specifically elaborates on the installation method of the first gear disk probe 4, the second gear disk probe 5 and the third gear disk probe 7 on the integrated gear disk 1 and the improvements of the device. Unless otherwise specified, in this application, B represents the convex side wall of the integrated gear disk 1, and C represents the concave side wall of the integrated gear disk 1.

[0031] For the convenience of explaining the technical solution of this application, the probes and structural members shown in the attached drawings of this application are structural schematic diagrams, rather than limiting that the present invention must have the corresponding number of devices shown in the drawings.

[0032] The integrated gear disk 1 is purchased from the pure mechanical overspeed protector parts of Turab in Sweden; the gear disk speed measuring device is powered by an external power supply. The gear disk speed measuring device is purchased from Nanjing Keming Automation Equipment Co., Ltd.; the CM-200 microcomputer speed measuring device. The present invention only uses these two instruments in combination for the convenience of explanation, rather than limiting that the technical solution of the present invention must use these two instruments to achieve the precise installation of the probe. The water turbine integrated gear disk 1 and the gear disk speed measuring device can be directly purchased from the market, and the specific structure and speed measuring principle of the gear disk speed measuring device will not be elaborated.

[0033] Embodiment 1

[0034] Please refer to Figures 1 to 3 , before installation, it is necessary to ensure that the integrated gear disk installed on the main shaft is perpendicular to the water turbine main shaft.

[0035] At this time, first fix the probe support 6 that can be adjusted up, down, left and right. Multiple probes can be installed on the probe support 6. First, horizontally fix the installed first gear disc probe 4, second gear disc probe 5, and third gear disc probe 7; then stick the probe front ends of the first gear disc probe 4 and the second gear disc probe 5 to the second structural member 3, and tighten the fastening nuts on the front and rear sides of the first gear disc probe 4 and the second gear disc probe 5; then stick the probe front end of the third gear disc probe 7 to the third structural member 8, and tighten the fastening nuts on the front and rear sides of the third gear disc probe 7; finally, remove the second structural member 3 and replace it with the first structural member 2, and then use the third structural member 8 to check the gear disc spacing between the first gear disc probe 4, the second gear disc probe 5, the third gear disc probe 7 and the integrated gear disc 1 installed on the water turbine main shaft.

[0036] The specific connection relationship is as follows:

[0037] A tool for installing and adjusting a gear disc probe in a hydropower station, including an integrated gear disc 1. A plurality of first structural members 2, a plurality of second structural members 3, and a plurality of third structural members 8 are installed on the integrated gear disc 1. Each first structural member 2 and each second structural member 3 are respectively in contact with the inner walls C of the two gear disc grooves of the integrated gear disc 1. Each third structural member 8 is in contact with the convex side wall B of the integrated gear disc 1. The side wall on one side of the second structural member 3 is in contact with the probe side wall of the first gear disc probe 4. The first gear disc probe 4 is fixedly connected to the probe support 6 through a fastening nut. The probe support 6 is also equipped with a second gear disc probe 5 and a third gear disc probe 7.

[0038] One end of the probe support 6 is fixedly connected to a fixed block 9.

[0039] The thickness of each first structural member 2 is equal to the groove tooth thickness of the integrated gear disc 1. The bending radian of the first structural member 2 is equal to the bending radian of the groove of the integrated gear disc 1. The height of the first structural member 2 is equal to the groove tooth depth of the integrated gear disc 1.

[0040] The thickness of each second structural member 3 is greater than the groove tooth thickness of the integrated gear disc 1. The bending radian of the second structural member 3 is equal to the bending radian of the groove of the integrated gear disc 1. The height of the second structural member 3 is equal to the groove tooth depth of the integrated gear disc 1.

[0041] The thickness of each third structural member 8 is equal to the difference between the thickness of the second structural member 3 and the first structural member 2; the bending radian of the third structural member 8 is equal to the bending radian of the convex side wall of the integrated gear disc 1. The height of the third structural member 8 is equal to the groove tooth depth of the integrated gear disc 1.

[0042] Each of the first gear disc probe 4, the second gear disc probe 5, and the third gear disc probe 7 is equipped with a fastening nut. The first gear disc probe 4, the second gear disc probe 5, and the third gear disc probe 7 are all fixedly connected to the probe support 6 through the fastening nut.

[0043] The outer walls of each of the first structural members 2, the second structural members 3, and the third structural members 8 are made of stainless steel, and magnets are embedded inside each of the first structural members 2, the second structural members 3, and the third structural members 8.

[0044] Each of the first structural members 2 and the second structural members 3 is adsorbed on the inner wall C of the groove of the integrated gear disk 1 by a magnet.

[0045] Each of the third structural members 8 is adsorbed on the convex side wall B of the integrated gear disk 1 by a magnet.

[0046] Preferably, each of the first gear disk probes 4, the second gear disk probes 5, and the third gear disk probes 7 is installed in the upper middle part of the integrated gear disk 1.

[0047] When the machine stops, the probes of the first gear disk probe 4 and the second gear disk probe 5 are vertically and directly opposite to the upper middle part of the convex side wall of the groove of the integrated gear disk 1; the probe of the third gear disk probe 7 is vertically and directly opposite to the upper middle part of the convex side wall of the integrated gear disk 1; after starting the machine, when the large shaft rotates at high speed during the operation of the water turbine unit and the integrated gear disk 1 rotates at high speed with the large shaft, at this time, the height of the integrated gear disk 1 rises, and at this time, the first gear disk probe 4, the second gear disk probe 5, and the third gear disk probe 7 change from corresponding to the upper middle part of the convex side wall of the integrated gear disk 1 to corresponding to the middle part of the convex side wall of the integrated gear disk 1.

[0048] An installation method of a gear disk probe installation and adjustment tool for a hydropower station includes the following steps:

[0049] S1. Adjust the gear disk plane of the integrated gear disk 1 on the main shaft to be perpendicular to the water turbine main shaft; then vertically install the gear disk bracket 6 on the outside of the gear disk horizontal plane of the integrated gear disk 1.

[0050] S2. Adsorb the second structural members 3 on the inner wall of the integrated gear disk groove on the side of the integrated gear disk 1 where the gear disk bracket 6 is correspondingly installed in sequence.

[0051] Preferably, the second structural members 3 can be installed in the concave grooves C at the concave surfaces of the first gear disk probe 4 and the second gear disk probe 5 corresponding to the gear disk bracket 6 at the groove of the integrated gear disk 1, and it is not necessary to fit the second structural members 3 to all the grooves of the integrated gear disk 1. The number of the structural members of the second structural members 3 can be adjusted according to the number of the probes installed on the probe bracket 6.

[0052] S3. Move the first gear disk probe 4 to be in tangential contact with the second structural member 3, and then fix the first gear disk probe 4 on the probe bracket 6 by tightening with a fastening nut.

[0053] S4. Remove the second structural members 3, and sequentially place each of the first structural members 2 into the grooves where the second structural members 3 are located. A fan-shaped cylinder is formed at the connection between each of the first structural members 2 and each groove of the integrated gear disk 1; the installation of the first structural members 2 and the first gear disk probe 4 is completed.

[0054] S5. Refer to the installation steps S2 to S4 of the first disk probe 4 and install the second disk probe 5.

[0055] S6. After the first disk probe 4 and the second disk probe 5 are installed, attach and connect the third structural member 8 to the convex side wall B of the integrated disk on the side of the disk plane 1 where the disk bracket 6 is correspondingly installed.

[0056] Preferably, it is only necessary to attach the convex side wall B of the third disk probe 7 on the disk bracket 6 corresponding to the groove of the integrated disk 1 to the third structural member 8, and it is not necessary to attach the third structural member 8 to all the convex side walls B of the integrated disk 1. The number of structural members of the third structural member 8 can be adjusted according to the number of third disk probes 7 installed on the probe bracket 6.

[0057] S7. Then, make the third disk probe 7 respectively fit and contact and be tangent to the outer side wall of the third structural member 8, and then fix the third disk probe 7 on the probe bracket 6 by tightening with a fastening nut; remove the third structural member 8, and the installation of the third disk probe 7 is completed.

[0058] S8. Probe calibration: Attach and connect the third structural member 8 to the outer side wall of each first structural member 2 corresponding to the groove of the integrated disk 1 on the side where the disk bracket 6 is installed and the convex side wall B corresponding to the third disk probe 7.

[0059] Preferably, it is only necessary to calibrate by attaching the third structural member 8 to the first structural member 2 corresponding to the grooves of the integrated disk 1 where the first disk probe 4 and the second disk probe 5 are installed and the convex side wall B corresponding to the position where the third disk probe 7 is installed in sequence. The number of structural members of the third structural member 8 can be adjusted according to the number of probes installed on the probe bracket 6.

[0060] When the third structural member 8 is in close contact with each first disk probe 4, each second disk probe 5 and each third disk probe 7, the distance between each disk probe on the probe bracket 6 and the integrated disk 1 is in an accurately installed state; if they cannot be in fitting contact, reinstall and calibrate until the positions of each disk probe are accurately installed.

[0061] S9. After calibrating the installation of each disk probe, remove all the first structural members 2 and the third structural members 8.

[0062] After completing steps S1 to S9, the disk speed measuring device can be used to accurately measure the gear speed. Preferably, the total number of disk probes on the probe bracket 6 is set to 6 to 8 probes.

[0063] Refer to Appendix Figure 3 , the thickness of the first structural member 2 is D1, the thickness of the second structural member 3 is D2, and the thickness of the third structural member 8 is D3, where D2 = D1 + D3.

[0064] In this embodiment, it is preferable that the thickness of the third structural member 8 is 2.5 mm. After installation, the probe of the third gear disk probe 7 is 2.5 mm away from the B convex side wall of the integrated gear disk 1, and the probes of the first gear disk probe 4 and the second gear disk probe 5 are 2.5 mm away from each first structural member 2. When checking the spacing, the first gear disk probe 4, the second gear disk probe 5 and the third gear disk probe 7 are in contact with the outer wall of the third structural member 8 and tangent to it. At this time, the speed measurement accuracy of the probe of the gear disk speed measurement device for the integrated gear disk 1 is the highest.

[0065] In addition, the description in this new type only represents the preferred embodiments of this new type and is not used to limit this new type. Although this new type has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements on some of the technical features. For example, according to the size of the integrated gear disk 1 and the required ranging distance, change the tooth thickness of the third structural member 8 and correspondingly change the tooth thicknesses of the first structural member 2 and the second structural member 3. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of this new type shall be included within the protection scope of this new type.

Claims

1. A hydropower station gear disc probe installation and adjustment tool, characterized in that: The invention comprises an integrated toothed disc (1), wherein the integrated toothed disc (1) is provided with a plurality of first structural members (2), a plurality of second structural members (3) and a plurality of third structural members (8), each of the first structural members (2) and each of the second structural members (3) respectively fits in contact with the inner walls of two toothed disc grooves of the integrated toothed disc (1), each of the third structural members (8) fits in contact with the convex side wall of the integrated toothed disc (1), a side wall of one side of the second structural member (3) fits in contact with the probe side wall of the first toothed disc probe (4), the first toothed disc probe (4) is fixedly connected to a probe bracket (6) by means of a fastening nut, and the probe bracket (6) is further provided with a second toothed disc probe (5) and a third toothed disc probe (7).

2. A hydropower station gear disc probe installation and adjustment tool according to claim 1, characterized in that: One end of the probe bracket (6) is fixedly connected to a fixing block (9).

3. A hydropower station gear disc probe installation and adjustment tool according to claim 1, characterized in that: The thickness of each of the first structural members (2) is equal to the groove tooth thickness of the integrated toothed disc (1), the curvature of the first structural member (2) is equal to the curvature of the groove of the integrated toothed disc (1), and the height of the first structural member (2) is equal to the groove tooth depth of the integrated toothed disc (1).

4. A hydropower station gear disc probe installation and adjustment tool according to claim 1, characterized in that: The thickness of each of the second structural members (3) is greater than the groove tooth thickness of the integrated toothed disc (1), the curvature of the second structural member (3) is equal to the curvature of the groove of the integrated toothed disc (1), and the height of the second structural member (3) is equal to the groove tooth depth of the integrated toothed disc (1).

5. A hydropower station gear disc probe installation and adjustment tool according to claim 1, characterized in that: The thickness of each of the third structural members (8) is equal to the difference between the thickness of the second structural member (3) and the thickness of the first structural member (2); the curvature of the third structural member (8) is equal to the curvature of the convex side wall of the integrated toothed disc (1); and the height of the third structural member (8) is equal to the groove tooth depth of the integrated toothed disc (1).

6. A hydropower station gear disc probe installation and adjustment tool according to claim 1, characterized in that: Each of the first toothed disc probe (4), the second toothed disc probe (5) and the third toothed disc probe (7) is provided with a fastening nut, and the first toothed disc probe (4), the second toothed disc probe (5) and the third toothed disc probe (7) are fixedly connected to the probe bracket (6) via the fastening nut.

7. A hydropower station gear disc probe installation and adjustment tool according to claim 1, characterized in that: The outer wall of each of the first structural member (2), the second structural member (3) and the third structural member (8) is made of stainless steel, and each of the first structural member (2), the second structural member (3) and the third structural member (8) is embedded with a magnet.

8. A hydropower station gear disc probe installation and adjustment tool according to claim 1, characterized in that: Each of the first structural member (2) and the second structural member (3) is adsorbed on the inner wall of the groove of the integrated toothed disc (1) by means of a magnet.

9. A hydropower station gear disc probe installation and adjustment tool according to claim 1, characterized in that: Each of the third structural members (8) is adsorbed on the convex side wall of the integrated toothed disc (1) by means of a magnet.

10. A hydropower station gear disc probe installation and adjustment tool according to claim 1, characterized in that: Each of the first toothed disc probe (4), the second toothed disc probe (5) and the third toothed disc probe (7) is installed at the middle and upper part of the integrated toothed disc (1).

Images