Reusable shear pin annunciator of water-turbine generator set
By using photoelectric connection design between the upper and lower parts of the signal device, the shear pin signal device can be reused after being cut, which solves the problem of non-reusability in the existing technology, reduces material waste and operating costs, and improves equipment reliability.
Patent Information
- Application Number
- CN202520217519.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-12
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-02-12
AI Technical Summary
Existing shear pin signalers cannot be reused after each shearing, resulting in material waste, environmental pollution, and increased labor steps. They are also prone to false alarms and wear problems.
The upper and lower encapsulation materials of the signal device form an optoelectronic connection through the red light emitting end and the signal reflecting end. After the cutting pin is cut, the upper and lower parts of the signal device will be displaced without being damaged, thus enabling repeated use.
It enables the reuse of the cut-off pin signal device, reduces material waste and environmental pollution, lowers operating costs, avoids false alarms, and has a simple structure.
Smart Images
Figure CN223728324U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to water turbine generator shearing pin signal device technical field, concretely relates to a reusable water turbine generator unit shearing pin signal device. BACKGROUND
[0002] Shearing pin signal device is the important device of reaction water turbine generator guide vane whether there is foreign matter blockage, is the important basis of reaction water turbine generator unit guide vane normal operation. The market has two kinds of shearing pin signal device, one is integrally cast, the shell adopts PMMA, epoxy resin brittle material package, the signal device center position package has metal loop device, the upper portion has two wires connection as output, when the shearing pin is broken by guide vane crank, the broken pin signal device is also broken simultaneously, thereby making signal loop open, and the device connected in control loop starts responding to the set logic and sends out alarm signal, and the other is a certain reusable mechanical split bolt type structure, and the signal device principle of this mode is similar to the first kind, and the difference lies in that the integral package type is changed into split bolt type structure, the lower part upper end is tapered shape inclined plane, and the inside package U type metal loop plug, is connected through the bolt mode normally, when the shearing pin is cut, the cross section of the upper cut surface has a downward force to the tapered inclined plane, thereby making the lower part fall, and simultaneously making signal loop open.
[0003] The above two kinds of shearing pin signal device cannot be reused or the reuse rate is not high, and the signal device is cut along with the shearing pin each time, and then the signal device needs to be replaced and rewired, and a lot of work is generated. With time, the split bolt type structure signal device will appear rust, wear, oscillation drop, false alarm due to small shearing action amplitude, false alarm due to oil dirt, and the like, which increases the workload of the operation personnel due to misjudgment. The above two kinds of ways will produce material waste, environmental pollution and increase labor process. UTILITY MODEL CONTENTS
[0004] The utility model aims at providing a reusable water turbine generator unit shearing pin signal device to solve the problems in the above background technology.
[0005] In order to achieve the above object, the utility model provides the following technical scheme: a kind of reusable water-turbine generator unit shear pin signal indicator, including the signal indicator in the middle part of shear pin, the signal indicator includes signal indicator upper packaging material and signal indicator lower packaging material, the signal indicator upper packaging material is placed in the upper part of shear pin, the signal indicator lower packaging material is placed in the lower part of shear pin;The cavity between the signal indicator upper packaging material and signal indicator lower packaging material, red light emitting end is equipped in the signal indicator upper packaging material, red light focusing mirror is equipped in the lower end of red light emitting end along signal indicator upper packaging material inner wall, signal reflection end is equipped in the signal indicator lower packaging material, the upper end of signal indicator upper packaging material is connected with fiber optic lead-out wire, signal reflection end bottom is connected with magnetic base.
[0006] According to one embodiment of the utility model, the signal reflection end is a metal column with a diameter of 2mm, and the top of the signal reflection end is 5mm higher than the top of the signal indicator lower packaging material.
[0007] According to one embodiment of the utility model, the red light emitting end is coaxial with the signal reflection end.
[0008] According to one embodiment of the utility model, the signal indicator upper packaging material and the signal indicator lower packaging material are made of hot melt adhesive, PMMA or insulating plastic.
[0009] According to one embodiment of the utility model, the signal indicator upper packaging material has a T-shaped cross section.
[0010] In the above technical scheme, the utility model provides the technical effect and advantage:
[0011] 1、The utility model discloses a reusable water-turbine generator unit shear pin signal indicator, which connects the shear pin signal indicator through photoelectric effect, so that the signal indicator is not damaged directly after the shear pin is broken each time, achieves the effect of repeated use, reduces the use cost of the shear pin signal indicator in the operation process of the hydropower station, avoids a large amount of material waste, environmental pollution and increase of labor process, and has a simple structure.
[0012] 2、The utility model discloses a reusable water-turbine generator unit shear pin signal indicator, which generates a dislocation at a high point of the signal indicator lower packaging material after the shear pin is broken, so that the red light is deviated. BRIEF DESCRIPTION OF DRAWINGS
[0013] In order to make the technical scheme of the present application or the prior art clearer, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.
[0014] Fig. 1 It is a structural schematic diagram of the present application;
[0015] Fig. 2 It is a signal installation schematic diagram of the present application;
[0016] Fig. 3 It is a signal misplacement schematic diagram of the present application.
[0017] Mark explanation:
[0018] 1 - signal upper packaging material; 2 - signal lower packaging material; 3 - shear pin; 4 - red light emitting end; 5 - red light focusing mirror; 6 - optical fiber lead wire; 7 - signal reflection end; 8 - magnetic suction base. Specific implementation
[0019] In order to make the technical scheme of the present application or the prior art clearer, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.
[0020] As Figs. 1-3 shown in a kind of reusable hydroelectric generator shear pin signal, including signal in the middle part of shear pin 3, signal includes signal upper packaging material 1 and signal lower packaging material 2, signal upper packaging material 1 is placed in the upper part of shear pin 3, signal lower packaging material 2 is placed in the lower part of shear pin 3;Signal upper packaging material 1 and signal lower packaging material 2 between have cavity, red light emitting end 4 is equipped in signal upper packaging material 1, red light focusing mirror 5 is equipped in signal lower packaging material 2, signal reflection end 7 is equipped in signal upper packaging material 1 upper end is connected with optical fiber lead wire 6, signal reflection end 7 bottom is connected with magnetic suction base 8;
[0021] Red light emitting end 4 adopts split type photoelectric switch, and the red light emitted is hit on the signal reflection end 7 of signal lower packaging material 2 protrusion, the surface of signal reflection end 7 can diffuse the red light signal to external receiver and detection circuit, and the signal is worked in stable state by adjusting receiver and detection circuit, forms a loop that upper and lower parts are connected by red light beam, and the signal is connected with signal loop by optical fiber lead wire 6, once red light beam deviates from the surface of protruding signal reflection end 7, will make external preset parameter and reflection receiving loop compare, if inconsistent, make signal loop alarm output.
[0022] Preferably, the signal reflecting end 7 is a metal pillar with a diameter of 2mm, and the top height of the signal reflecting end 7 is 5mm higher than the top of the lower encapsulation material 2 of the signal device;
[0023] The height of the signal reflecting end 7 is lower than the weak point of the shear pin 3. After the shear pin 3 is cut, the weak point will not damage the lower end of the signal device; it can only cause displacement. The broken part of the shear pin 3 cannot come into contact with the signal device and damage the upper and lower encapsulation materials. Therefore, as long as the transmitting and reflecting points are at the center point, the upper and lower parts of the signal device can be displaced when the shear pin 3 is cut. Since the encapsulation materials of the upper and lower parts of the signal device are physically separated, the upper and lower parts of the signal device can only undergo positional displacement, thus emitting a signal. The breaking of the shear pin 3 will not damage the signal device, allowing it to be reused.
[0024] Preferably, the red light emitting end 4 and the signal reflecting end 7 are coaxial.
[0025] Preferably, the upper encapsulation material 1 and the lower encapsulation material 2 of the signal device are made of hot melt adhesive, PMMA or insulating plastic;
[0026] Made of brittle materials, this design ensures the insulation and waterproofing of the components within the signal device. It also reduces the weight of the signal device and prevents easy deformation of the encapsulation material. Because the upper and lower encapsulation materials are separate structures, there is no wear. The lower half uses a magnetic attraction method to prevent it from falling off naturally, giving the signal device a certain degree of adhesion. When the shear pin 3 cuts, the force only cuts itself and does not exert any force on the signal device; only a positional shift occurs. Therefore, it can effectively displace the signal device while protecting it from any damage.
[0027] Preferably, the cross-section of the upper encapsulation material 1 of the signal device is T-shaped.
[0028] Working principle of this utility model:
[0029] like Fig. 2 As shown, in the working state, the shear pin 3 is a whole under normal conditions. The upper encapsulation material 1 of the signal device is installed in the middle position of the upper part of the metal shear pin 3. The disk at the upper end of the upper encapsulation material 1 of the signal device is larger than the circular hole in the middle of the upper part of the shear pin 3. The cross-section of the upper encapsulation material 1 of the signal device is T-shaped and it is suspended above the shear pin 3. There is a certain distance (2cm) between the bottom of the upper encapsulation material 1 of the signal device and the bottom of the upper part of the shear pin 3. At this time, the upper and lower parts are connected by red light. The red light is transmitted to the fiber optic amplifier through the optical fiber. The fiber optic amplifier is set with sensitivity, so that the upper and lower parts form a photoelectric path.
[0030] like Fig. 3As shown, the upper end face of the lower packaging material 2 of the signal indicator is flat in the shearing state, and only the center point is a raised metal column with a diameter of 2 mm higher than the upper end face of the lower packaging material 2 of the signal indicator by 5 mm, and the highest point of the metal column and the lower packaging material 2 of the signal indicator is lower than the weak point of the shearing pin 3, so that the weak point of the shearing pin 3 cannot hurt the lower end of the signal indicator after shearing, but only can produce a moving action, and cannot make the broken shearing pin 3 contact the lower part of the signal indicator to damage the lower end packaging material.
[0031] The above only describes some exemplary embodiments of the present application by way of illustration, and it is needless to say that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present application. Therefore, the above drawings and descriptions are illustrative in nature and should not be understood as limiting the scope of protection of the present application.
Claims
1. A reusable water turbine generator unit shear pin signal indicator, comprising a signal indicator placed in the middle of a shear pin (3), characterized in that: the signal indicator comprises an upper signal indicator encapsulating material (1) and a lower signal indicator encapsulating material (2), the upper signal indicator encapsulating material (1) is placed in the upper part of the shear pin (3), and the lower signal indicator encapsulating material (2) is placed in the lower part of the shear pin (3); there is a cavity between the upper signal indicator encapsulating material (1) and the lower signal indicator encapsulating material (2), a red light emitting end (4) is arranged in the upper signal indicator encapsulating material (1), a red light focusing mirror (5) is arranged at the lower end of the red light emitting end (4) along the inner wall of the upper signal indicator encapsulating material (1), a signal reflecting end (7) is arranged in the lower signal indicator encapsulating material (2), and a fiber optic lead-out wire (6) is connected to the upper end of the upper signal indicator encapsulating material (1), and a magnetic base (8) is connected to the bottom of the signal reflecting end (7).
2. A reusable hydroelectric generator shear pin annunciator according to claim 1, wherein: The signal reflecting end (7) is a metal column with a diameter of 2 mm, and the top of the signal reflecting end (7) is 5 mm higher than the top of the lower signal indicator encapsulating material (2).
3. A reusable hydroelectric generator shear pin annunciator according to claim 1, wherein: The red light emitting end (4) and the signal reflecting end (7) are coaxial.
4. A reusable hydroelectric generator shear pin annunciator according to claim 1, wherein: The upper signal indicator encapsulating material (1) and the lower signal indicator encapsulating material (2) are made of hot melt adhesive, PMMA or insulating plastic.
5. A reusable hydroelectric generator shear pin annunciator according to claim 1, wherein: The cross section of the upper signal indicator encapsulating material (1) is T-shaped.