Water turbine set probe automatic distance adjusting device

Abstract

The utility model discloses a hydraulic turbine set probe automatic distance adjusting device, and relates to the technical field of hydropower station probe distance adjusting, which comprises a mounting component, a distance adjusting component and a distance adjusting system. The mounting assembly comprises a mounting bracket and a fixing piece; a measuring probe is arranged on the fixing piece; the distance adjusting assembly comprises a measuring piece and a pushing piece, and the measuring piece is connected with the measuring probe; the pushing piece drives the measuring probe and the measuring piece to move towards or away from the hydraulic turbine set under the action of an external instruction; the distance adjusting system comprises a control system which is electrically connected with the measuring probe, the measuring piece and the pushing piece; the distance between the measuring piece and the hydraulic turbine set is monitored in real time through the measuring piece, when the distance between the measuring piece and the measuring probe and the hydraulic turbine set changes, a signal is transmitted to the control system through the measuring piece, the control system transmits an instruction to the pushing piece, and the pushing piece drives the measuring probe to move towards or away from the hydraulic turbine set. Therefore, the distance between the measuring probe and the hydraulic turbine set meets the requirement, and normal starting of the hydraulic turbine set is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of probe distance adjustment technology in hydropower stations, specifically to an automatic probe distance adjustment device for a water turbine unit. Background Technology

[0002] In hydropower stations, numerous measuring probes are used. The probe's position is the most critical factor affecting the measurement results. During unit operation, its distance from the surface of the object being measured directly affects the efficiency and effectiveness of the measurement. However, currently, determining the probe's position mainly relies on measurements taken by power station staff, followed by manual adjustment of the distance between the two. Due to significant vibrations during unit operation and poor observation capabilities, coupled with the fact that manual distance adjustment can only be performed when the unit is shut down, and that during the flood season, the unit operates 24 hours a day with virtually no opportunity for shutdown, the work area for distance adjustment is generally confined and involves working at height, posing a high risk, with complex safety measures and tight deadlines. This method of distance adjustment is unreliable, not only affecting the measurement results but also potentially causing the probe position to shift upon startup, thus disrupting normal unit operation. Utility Model Content

[0003] The main purpose of this utility model is to provide an automatic distance adjustment device for turbine generator probes, which solves the problem that it is difficult to adjust the relative position between existing hydropower station measuring probes and the measured object.

[0004] To achieve the above objectives, this utility model provides an automatic distance adjustment device for a turbine generator probe, comprising:

[0005] The mounting components include mounting brackets mounted on the turbine unit and fixing components slidably mounted on the mounting brackets; multiple sets of mounting brackets are arranged at intervals along the circumference of the turbine unit; and measuring probes are provided on the fixing components.

[0006] The pitch adjustment assembly includes a measuring element mounted on a mounting bracket and a pushing element mounted on the mounting bracket and connected to a fixing element; the measuring element is connected to a measuring probe; the pushing element drives the measuring probe and the measuring element to move toward or away from the turbine unit under the action of an external command.

[0007] As a further improvement of this utility model, the mounting bracket includes a vertical support rod and a diagonal support rod connected to the vertical support rod; a supporting crossbar is provided on the vertical support rod.

[0008] As a further improvement of this utility model, the supporting crossbar is provided with a sliding groove; the fixing member includes a fixing sleeve; the fixing sleeve is slidably installed in the sliding groove.

[0009] As a further improvement of this utility model, the pushing component includes a hydraulic push rod disposed on the support crossbar and a hydraulic cylinder connected to the hydraulic push rod; the hydraulic push rod is connected to the fixed sleeve.

[0010] As a further improvement of this utility model, the measuring component includes a connecting rod connected to the fixed sleeve and an ultrasonic sensor mounted on the connecting rod; the signal end of the ultrasonic sensor faces the turbine unit.

[0011] The beneficial effects of this utility model are reflected in:

[0012] By setting a measuring device to monitor the distance between the measuring device and the turbine unit in real time, when the distance between the measuring device and the measuring probe and the turbine unit changes, the measuring device transmits a signal to the control system. The control system then controls the pusher to move the measuring probe toward or away from the turbine unit, thereby ensuring that the distance between the measuring probe and the turbine unit meets the requirements and ensuring the normal start-up of the turbine unit. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of an automatic distance adjustment device for a turbine generator probe according to the present invention;

[0014] Figure 2 This is a schematic diagram of the mounting bracket structure for an automatic distance adjustment device for a turbine generator probe according to the present invention;

[0015] Figure 3 This is a schematic diagram of the support crossbar structure of an automatic distance adjustment device for a turbine generator probe according to the present invention;

[0016] Explanation of reference numerals in the attached figures:

[0017] 1. Turbine unit; 2. Mounting bracket; 201. Vertical support rod; 202. Diagonal support rod; 203. Support crossbar; 3. Fixing component; 301. Fixing sleeve; 4. Measuring probe; 5. Measuring component; 501. Connecting rod; 502. Ultrasonic sensor; 6. Pushing component; 601. Hydraulic push rod; 602. Hydraulic cylinder; 7. Control system; 8. Slide groove; 9. First screw hole; 10. Locking stud; 11. Connecting sleeve; 12. Fixing stud; 13. Mounting sleeve; 14. Limiting stud. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the described embodiments are merely some, not all, of the embodiments of this utility model. Unless otherwise specified, the embodiments and features described in this application can be combined with each other. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0019] In one embodiment, see Figure 1The present invention relates to an automatic distance adjustment device for a turbine generator unit probe, comprising an installation component, a distance adjustment component, and a distance adjustment system.

[0020] The installation components include a mounting bracket 2 mounted on the turbine unit 1 and a fixing member 3 slidably mounted on the mounting bracket 2; multiple sets of mounting brackets 2 are arranged at intervals along the circumference of the turbine unit 1; a measuring probe 4 is provided on the fixing member 3; the pitch adjustment component includes a measuring member 5 mounted on the mounting bracket 2 and a pushing member 6 mounted on the mounting bracket 2 and connected to the fixing member 3, the measuring member 5 being connected to the measuring probe 4; the pushing member 6, under the action of an external command, drives the measuring probe 4 and the measuring member 5 to move toward or away from the turbine unit 1; the pitch adjustment system includes a control system 7 electrically connected to the measuring probe 4, the measuring member 5, and the pushing member 6.

[0021] Further, see Figure 2 The mounting bracket 2 includes a vertical support rod 201 and a diagonal support rod 202 connected to the vertical support rod 201. A support crossbar 203 is provided on the vertical support rod 201.

[0022] Preferably, the vertical support rod 201 and the diagonal support rod 202 are respectively connected to the turbine unit 1 by bolts, the diagonal support rod 202 and the vertical support rod 201 are connected by bolts, and the support crossbar 203 is welded to the vertical support rod 201.

[0023] Further, see Figure 3 The support crossbar 203 is provided with a sliding groove 8, and the fixing component 3 includes a fixing sleeve 301, which is slidably installed in the sliding groove 8.

[0024] Preferably, the fixing sleeve 301 is provided with a first screw hole 9, and a locking stud 10 is provided in the first screw hole 9, which abuts against the measuring probe 4.

[0025] Further, see Figure 2 The pusher 6 includes a hydraulic push rod 601 mounted on the support crossbar 203 and a hydraulic cylinder 602 connected to the hydraulic push rod 601. The hydraulic push rod 601 is connected to the fixed sleeve 301.

[0026] Preferably, the fixed sleeve 301 is provided with a connecting sleeve 11, the connecting sleeve 11 is provided with a fixing stud 12, the connecting sleeve 11 is sleeved with the end of the hydraulic push rod 601, and the fixing stud 12 abuts against the hydraulic push rod 601.

[0027] In the above setup, the vertical support rod 201 and the diagonal support rod 202 connect the entire device to the turbine unit 1 and provide support. The fixed sleeve 301 is pushed to move in the slide groove 8 by the hydraulic push rod 601, thereby pushing the measuring probe 4 to move toward or away from the turbine unit 1 and adjusting the distance between the measuring probe 4 and the turbine unit 1.

[0028] Further, see Figure 2 The measuring component 5 includes a connecting rod 501 connected to the fixed sleeve 301 and an ultrasonic sensor 502 mounted on the connecting rod 501. The signal end of the ultrasonic sensor 502 faces the turbine unit 1.

[0029] Preferably, the connecting rod 501 passes through the slide groove 8 and is connected to the fixing sleeve 301. The end of the connecting rod 501 is provided with a mounting sleeve 13, and the mounting sleeve 13 is provided with a limiting stud 14. The ultrasonic sensor 502 is installed in the mounting sleeve 13.

[0030] Preferably, the ultrasonic sensor 502 is positioned directly opposite the smooth outer wall of the turbine shaft, and the signal end of the ultrasonic sensor 502 and the measuring end of the measuring probe 4 are located on the same vertical plane.

[0031] Preferably, the control system 7 employs a microcontroller, specifically the SN8P2501D, an 8-bit microcontroller with a RISC-Like system, characterized by high performance and low power consumption. It features a 1T (one instruction cycle equals one clock cycle) architecture and 16 MIPS of computing power. Furthermore, its high EFT performance makes it suitable for high-interference industrial environments. The SN8P2501D boasts a superior IC architecture, including 1K-word program memory (OTP ROM), 48-byte data memory (RAM), two 8-bit timer / counters (T0, TC0), a watchdog timer, three interrupt sources (T0, TC0, INT0), a single PWM output (PWM0), a single buzzer output (BZ0), and a four-level stack buffer. The SN8P2501D also provides four different oscillator modes for the system clock: high / low-speed crystal oscillators / ceramic resonators and inexpensive RC oscillators. In addition, the SN8P2501D includes an internal 16MHz RC oscillator as the system clock and a programmable internal low-frequency RC oscillator as the system clock for low-speed mode.

[0032] In the above setup, the ultrasonic sensor 502 is a piezoelectric ultrasonic sensor 502, which works by utilizing the resonance of a piezoelectric crystal. Since the surface of the object may not be flat, for example, at the gear speed measuring probe of a hydroelectric turbine generator set, the turbine generator set should maintain its rated speed. The gear speed measuring probe is used to monitor the main shaft speed. The main shaft has a "gear" shape directly opposite the gear speed measuring probe, and the reference point for the gear speed measuring probe's position is at the "convex" tooth. Therefore, when the unit stops, if the measuring probe 4 is directly facing the "concave" tooth of the gear, the system will misjudge the distance between the probe and the "convex" tooth. If the position of the measuring probe 4 is adjusted at this time, it will seriously affect the normal startup process, and may even lead to startup failure. Therefore, the ultrasonic sensor 502 is fixed below the measuring probe 4 and should be directly facing the flat and smooth part below the large shaft gear plate without the "gear plate". When the ultrasonic sensor 502 detects the movement of the measuring probe 4, it sends a feedback signal to the microcontroller. The microcontroller controls the hydraulic system to push or pull out the measuring probe 4 to adjust it to the appropriate position. The ultrasonic sensor 502 can monitor the distance between the measuring probe 4 and the "convex" tooth in real time to prevent accidents caused by mismeasurement due to the position displacement of the gear plate speed measuring probe.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic distance adjustment device for a turbine generator probe, characterized in that, include: The mounting components include a mounting bracket (2) mounted on the turbine unit (1) and a fixing member (3) slidably mounted on the mounting bracket (2); multiple sets of mounting brackets (2) are arranged at intervals along the circumference of the turbine unit (1); a measuring probe (4) is provided on the fixing member (3); The pitch adjustment assembly includes a measuring element (5) mounted on a mounting bracket (2) and a pushing element (6) mounted on the mounting bracket (2) and connected to a fixing element (3); the measuring element (5) is connected to a measuring probe (4); the pushing element (6) drives the measuring probe (4) and the measuring element (5) to move toward or away from the turbine unit (1) under the action of an external command.

2. The automatic distance adjustment device for a turbine generator probe according to claim 1, characterized in that: The mounting bracket (2) includes a vertical support rod (201) and a diagonal support rod (202) connected to the vertical support rod (201); a supporting crossbar (203) is provided on the vertical support rod (201).

3. The automatic distance adjustment device for a turbine generator probe according to claim 2, characterized in that: The support crossbar (203) is provided with a sliding groove (8); the fixing member (3) includes a fixing sleeve (301); the fixing sleeve (301) is slidably installed in the sliding groove (8).

4. The automatic distance adjustment device for a turbine generator probe according to claim 3, characterized in that: The pusher (6) includes a hydraulic push rod (601) mounted on a support crossbar (203) and a hydraulic cylinder (602) connected to the hydraulic push rod (601); the hydraulic push rod (601) is connected to a fixed sleeve (301).

5. The automatic distance adjustment device for a turbine generator probe according to claim 4, characterized in that: The measuring component (5) includes a connecting rod (501) connected to a fixed sleeve (301) and an ultrasonic sensor (502) mounted on the connecting rod (501); the signal end of the ultrasonic sensor (502) faces the turbine unit (1).

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