An oil leakage prevention device for a water turbine governor and its usage method

Abstract

A turbine governor anti-oil leakage device and its usage method, including an oil tank, a closed cover is arranged at the top of the oil tank, an oil discharge mechanism is arranged on one side of the bottom of the oil tank, an air inflation guide rod is vertically inserted and connected through the middle of the closed cover and inside the oil tank, an airbag is arranged at the bottom of the air inflation guide rod and inside the oil tank, a sealing member for closing the oil discharge mechanism is arranged between the bottom of the air inflation guide rod and the inner wall of the oil tank, and a self-powered positioning alarm mechanism for cooperating with the air inflation guide rod for leakage alarm is arranged on the outer wall of the oil tank. First, in the present invention, a sealing member for closing the oil discharge mechanism is arranged between the bottom of the air inflation guide rod and the inner wall of the oil tank. In this way, after oil leakage occurs, the liquid level of the oil in the oil tank drops. At this time, the sealing member moves down together with the airbag and the air inflation guide rod to block the oil discharge mechanism, thus avoiding a large amount of oil leakage. Through such timely blocking, waste is also reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of hydroturbine governors, and particularly to an anti-oil-leakage device for a hydroturbine governor and a method for using the same. Background Art

[0002] A hydroturbine governor is a key component for managing the speed of a hydroturbine, and is usually used in hydropower stations and some industrial applications. Its main function is to ensure that the hydroturbine maintains a stable speed under changing water flow conditions to generate a stable power output.

[0003] Most of the existing anti-oil-leakage devices for hydroturbine governors use an early warning system for anti-leakage, that is, a pressure sensor is set at the oil tank, and the change of the oil pipe pressure transmitted to the system through the pressure sensor is used to judge and give an early warning of anti-oil-leakage. Since the oil leakage of the hydroturbine governor mostly occurs at the oil discharge pipeline during actual use, and since the oil pressure in the oil pipe is constantly changing, the signals received by the pressure sensor are continuously changing, which will cause misjudgment of the oil leakage change. At the same time, the existing method can only give an early warning and cannot block the oil leakage. Once an oil leakage occurs, a large amount of oil will still leak from the oil tank. Summary of the Invention

[0004] The technical problem to be solved by the present invention is: to provide an anti-oil-leakage device for a hydroturbine governor and a method for using the same. A self-powered positioning alarm mechanism for cooperating with an inflatable guide rod for leakage alarm is arranged on the outer wall of the oil tank. The mechanical energy generated by the floating of the airbag and the inflatable guide rod following the oil liquid is converted into electric energy, so as to realize continuous positioning and sending. After the oil leakage occurs, self-power generation stops, the self-powered positioning alarm mechanism is powered off and no longer sends positioning, and the maintenance personnel judge the oil leakage signal, and give an alarm prompt by this method. At the same time, after the oil leakage occurs, the oil liquid level in the oil tank drops. At this time, the sealing member follows the airbag and the inflatable guide rod to move downwards to block the oil discharge mechanism, thus avoiding a large amount of oil leakage.

[0005] The technical solution adopted by the present invention is: an anti-oil-leakage device for a hydroturbine governor, including an oil tank, a closing cover is arranged at the top of the oil tank, an oil discharge mechanism is arranged on one side of the bottom of the oil tank, an inflatable guide rod is vertically inserted through the middle of the closing cover and into the oil tank, an airbag is arranged at the bottom of the inflatable guide rod and inside the oil tank, a sealing member for closing the oil discharge mechanism is arranged between the bottom of the inflatable guide rod and the inner wall of the oil tank, and a self-powered positioning alarm mechanism for cooperating with the inflatable guide rod for leakage alarm is arranged on the outer wall of the oil tank.

[0006] A fuel filling pipe is arranged on the side of the closing cover, and a sealing plug for maintaining the seal of the oil tank is arranged at the top of the closing cover at the insertion position of the inflatable guide rod.

[0007] The oil discharge mechanism comprises an oil discharge pipe connected to the bottom of the oil tank, an electronic flow valve is arranged at one end of the oil discharge pipe away from the oil tank, and an oil drain pipe is arranged at one end of the electronic flow valve away from the oil tank.

[0008] The inner walls on both sides of the bottom of the oil tank are provided with guide grooves, and the bottom of one of the guide grooves is interconnected with the connection of the oil drain pipe in the oil tank. The closing part includes a linkage rod symmetrically arranged on the lower side of the inflation guide rod along the horizontal transverse midline, and the bottom ends of the two linkage rods are fixedly connected with closing strips, and the two closing strips are respectively slidably inserted and connected in the two guide grooves.

[0009] An air guide channel for airbag inflation is vertically opened in the middle of the inflation guide rod, and an inflation mechanism for airbag inflation control is arranged on the top of the air guide channel.

[0010] The inflation mechanism includes an inflation head, which is vertically inserted and connected to the top of the air guide channel. An inflation channel is opened in the middle of the inflation head. A plurality of air leakage holes are opened on the bottom inclined surface of the inflation head, passing through the inflation channel and surrounding it. An air blocking ring for closing the air leakage holes is installed in the air guide channel and at the bottom of the inflation head.

[0011] The air guide channel is provided with limiting slide grooves on both sides of the inflation head, and limiting sliders are fixedly connected to both sides of the bottom of the inflation head. The limiting sliders are slidably inserted in the limiting slide grooves, and a downward pressure spring is provided in the limiting slide groove and at the top of the limiting slider.

[0012] The self-generating positioning alarm mechanism includes a placement box fixedly connected to the outer wall of the oil tank, a generator motor is arranged in the middle of the placement box, a small transformer and a GPS locator are arranged on the top of the placement box, the transmission end of the generator motor is electrically connected to the power input end of the small transformer, the transmission end of the small transformer is electrically connected to the power supply end of the GPS locator, and the inflation guide rod is transmission-connected to the generator motor.

[0013] A through slot is vertically opened at one end of the placement box close to the oil tank, the output end of the generator motor is horizontally inserted and connected in the through slot, a toggle gear is sleeved on the output end of the generator motor and located in the through slot, a connecting plate is horizontally installed on the upper end of the inflation guide rod, a toggle rack is fixedly connected to the bottom end of the connecting plate away from the oil tank, and the bottom of the toggle rack is vertically inserted in the through slot and meshes with the outer wall of the toggle gear.

[0014] A method for using a turbine speed governor oil leakage prevention device comprises the following steps:

[0015] The first step is to check the connection between the devices, including the electrical connection between the generator motor, the small transformer and the GPS locator, and the meshing between the shift rack and the shift gear;

[0016] The second step is to inflate the airbag through the inflation guide rod, and when the airbag is in a fully inflated state, the inflation is stopped and the inflation guide rod is closed;

[0017] The third step is to control the oil in the oil tank to collect or discharge through the electronic flow valve. At this time, the pressure inside the oil tank will change, and the oil volume will fluctuate continuously. At this time, the airbag will float up and down with the liquid level of the oil, and the airbag will drive the inflation guide rod to float vertically. The inflation guide rod drives the connecting plate to move vertically, and the connecting plate drives the shifting rack to move vertically. At this time, the gear is rotated under the meshing transmission, and the generator motor starts to generate electricity and transmits it to the small transformer and GPS locator. The GPS locator sends the positioning signal in real time when it is powered on;

[0018] The fourth step, if an oil leak occurs, the oil level in the oil tank will drop, the airbag will drive the inflation guide rod to move downward, and the closure will follow the inflation guide rod to move downward. In this way, during the continuous downward movement, the closure will eventually block the pipe mouth of the oil discharge mechanism in the oil tank to prevent leakage from the pipe mouth. At the same time, the rack will stop moving, the generator motor will stop generating electricity, the GPS locator will stop sending positioning signals, and the maintenance personnel will receive an alarm based on the disappearance of the positioning.

[0019] The present invention has the following beneficial effects:

[0020] 1. The present invention firstly provides a sealing member for sealing the oil discharge mechanism between the bottom of the inflation guide rod and the inner wall of the oil tank. Thus, after the oil leakage occurs, the oil level in the oil tank drops. At this time, the sealing member moves down with the airbag and the inflation guide rod to seal the oil discharge mechanism, thus avoiding a large amount of oil leakage. Such timely sealing also reduces waste.

[0021] 2. The present invention provides a self-generating positioning alarm mechanism on the outer wall of the oil tank for cooperating with the inflatable guide rod for leakage alarm. The self-generating positioning alarm mechanism converts the mechanical energy generated by the change in the oil tank and the floating of the airbag and the inflatable guide rod with the oil into electrical energy, thus realizing continuous positioning and sending. In this way, after the oil leaks, it will no longer generate electricity by itself, and the self-generating positioning alarm mechanism will be powered off and will no longer send positioning signals. The maintenance personnel will judge the oil leak signal and use this method to issue an alarm prompt. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0023] Figure 1 It is a schematic diagram of the overall structure of the device of the present invention.

[0024] Figure 2 It is a structural side view of the overall device of the present invention.

[0025] Figure 3 It is a front view of the structure of the whole device of the present invention.

[0026] Figure 4 It is a front cross-sectional view of the overall structure of the device of the present invention.

[0027] Figure 5 For the present invention Figure 4 A schematic diagram of the enlarged structure at point A in the middle.

[0028] Figure 6 For the present invention Figure 4 A magnified schematic diagram of the structure at point B in the middle.

[0029] Figure 7 For the present invention Figure 4 Enlarged schematic diagram of the structure at C in the middle.

[0030] In the figure: 1. oil tank; 101. closing cover; 102. filling pipe; 103. sealing plug; 104. guide slide; 2. electronic flow valve; 201. oil drain pipe; 202. oil drain pipe; 3. inflation guide rod; 301. air guide channel; 302. linkage rod; 303. closing strip; 4. air bag; 5. connecting plate; 501. toggle rack; 502. air blocking ring; 6. inflation head; 601. inflation channel; 602. air leakage hole; 603. limiting slider; 604. downward pressure spring; 7. placement box; 701. generator motor; 702. toggle gear; 8. small transformer; 9. GPS locator. DETAILED DESCRIPTION

[0031] Embodiment 1

[0032] The present invention provides Figures 1-7 An anti-leakage device for a turbine speed governor is shown, comprising an oil tank 1, a closing cover 101 is provided at the top of the oil tank 1, an oil discharge mechanism is provided on one side of the bottom of the oil tank 1, an inflation guide rod 3 is vertically inserted and connected in the middle of the closing cover 101 and passes through the oil tank 1, an air bag 4 is provided at the bottom of the inflation guide rod 3 and located in the oil tank 1, a closing piece for closing the oil discharge mechanism is provided between the bottom of the inflation guide rod 3 and the inner wall of the oil tank 1, and a self-generating positioning alarm mechanism for cooperating with the inflation guide rod 3 for leakage alarm is provided on the outer wall of the oil tank 1.

[0033] Specifically, a refueling pipe 102 is provided on the side of the closing cover 101 , and a sealing plug 103 for maintaining the sealing of the oil tank 1 is provided on the top of the closing cover 101 and at the intersection with the inflation guide rod 3 .

[0034] The sealing plug 103 used in this solution is a rubber plug, so that while ensuring that the structure has a certain solid strength, the plug body of the sealing plug 103 can be deformed, thereby ensuring that the internal sealing of the oil tank 1 while ensuring that the inflation guide rod 3 can slide up and down.

[0035] Specifically, the oil drainage mechanism includes an oil drain pipe 202 inserted and connected to the bottom of the oil tank 1. One end of the oil drain pipe 202 away from the oil tank 1 is provided with an electronic flow valve 2. One end of the electronic flow valve 2 away from the oil tank 1 and horizontally and symmetrically arranged with the oil drain pipe 202 is provided with an oil discharge pipe 201.

[0036] Further, referring to Figure 4 、 7 , guiding chutes 104 are opened on the inner walls on both sides of the bottom of the oil tank 1, and the bottom of one of the guiding chutes 104 communicates with the connection part of the oil drain pipe 202 inside the oil tank 1. The sealing member includes a linkage rod 302 symmetrically arranged at the bottom of the inflatable guide rod 3 along the horizontal transverse center line. The bottom ends of the two linkage rods 302 are fixedly connected with sealing strips 303 respectively. The two sealing strips 303 are respectively slidably inserted and connected in the two guiding chutes 104.

[0037] The material used for the linkage rod 302 is the same as that of the inflatable guide rod 3. Through the cooperative design among the linkage rod 302, the sealing strip 303 and the guiding chute 104, the sliding of the inflatable guide rod 3 can be guided and restricted. Under such restriction, the inflatable guide rod 3 can slide in a vertical state.

[0038] Specifically, a gas guiding channel 301 for inflating the airbag 4 is vertically opened in the middle of the inflatable guide rod 3. The top of the gas guiding channel 301 is provided with an inflation mechanism for controlling the inflation of the airbag 4, and the airbag 4 is inflated or the air in the airbag is sealed through the inflation mechanism.

[0039] Referring to Figure 5 , the inflation mechanism includes an inflation head 6. The inflation head 6 is vertically inserted and connected to the top of the gas guiding channel 301. An inflation channel 601 is opened in the middle of the inflation head 6. A plurality of air leakage holes 602 are circumferentially opened through the inflation channel 601 on the bottom inclined surface of the inflation head 6. A gas blocking ring 502 for closing the air leakage holes 602 is installed in the gas guiding channel 301 at the bottom of the inflation head 6.

[0040] Furthermore, limiting chutes are opened on both sides of the gas guiding channel 301 located at the two sides of the inflation head 6. Limiting sliders 603 are fixedly connected to both sides of the bottom of the inflation head 6. The limiting sliders 603 are slidably inserted and connected in the limiting chutes. A downward pressure spring 604 is arranged at the top of the limiting sliders 603 in the limiting chutes. The downward pressure spring 604 always presses the limiting sliders 603 downward, so that the bottom of the inflation head 6 closely adheres to the gas blocking ring 502 to maintain sealing.

[0041] Further, the self - generating positioning and alarming mechanism includes a placement box 7 fixedly connected to the outer wall of the oil tank 1. A generating motor 701 is arranged in the middle of the placement box 7. A small transformer 8 and a GPS locator 9 are respectively arranged at the top of the placement box 7. The power transmission end of the generating motor 701 is electrically connected to the power input end of the small transformer 8, and the power transmission end of the small transformer 8 is electrically connected to the power supply end of the GPS locator 9. The inflatable guide rod 3 is drivingly connected to the generating motor 701.

[0042] It should be noted that the generating motor 701 is a device that converts mechanical energy into electrical energy. Generally, this term refers to a generator.

[0043] Furthermore, referring to Figure 6 , a through - slot is vertically opened at one end of the placement box 7 close to the oil tank 1. The output end of the generating motor 701 is horizontally inserted into the through - slot. A shifting gear 702 is sleeved on the output end of the generating motor 701 and located in the through - slot. A connecting plate 5 is horizontally installed at the upper end of the inflatable guide rod 3. A shifting rack 501 is fixedly connected to the bottom end on the side of the connecting plate 5 away from the oil tank 1. The bottom of the shifting rack 501 is vertically inserted into the through - slot and meshes with the outer wall of the shifting gear 702.

[0044] In addition to driving the generating motor 701 to rotate in the above - mentioned manner, a longitudinal rack structure can also be provided on the outer wall of the inflatable guide rod 3. The generating motor 701 is installed on the top of the tank body, and the shifting gear 702 meshes with the rack structure on the outer wall of the inflatable guide rod 3 for driving.

[0045] Embodiment 2

[0046] A usage method of an oil - leakage prevention device for a water turbine governor, using the oil - leakage prevention device of Embodiment 1, the usage method includes the following steps:

[0047] First step, first check the connections between the devices, including the electrical connection between the generating motor 701, the small transformer 8 and the GPS locator 9, and the meshing between the shifting rack 501 and the shifting gear 702.

[0048] Second step, pull up the inflation head 6 upwards so that the bottom of the inflation head 6 is separated from the air - blocking ring 502, and then align the air pump with the top of the inflation head 6 for inflation. At this time, the gas sequentially passes through the inflation channel 601, the air leakage hole 602 and the air guide channel 301 and is filled into the airbag 4. After the airbag 4 is in a fully inflated state, stop inflation and seal the air leakage hole 602 of the inflation head 6.

[0049] It should be noted that, when the inflation head 6 is pulled up, the connected limiting slider 603 will be driven to move up synchronously, and when the limiting slider 603 moves up in the limiting slide groove, it will squeeze the downward pressure spring 604 at the top, causing the downward pressure spring 604 to contract under the force. After the inflation head 6 is pulled up, under the action of gravity and the squeezing of the downward pressure spring 604, the bottom of the inflation head 6 will be squeezed to the air blocking ring 502, thereby keeping the leakage hole 602 blocked.

[0050] The third step is to control the collection or discharge of the oil in the oil tank 1 through the electronic flow valve 2. At this time, the pressure inside the oil tank 1 will change, and the oil volume will change continuously. At this time, the airbag 4 will float up and down with the liquid level of the oil, so that the airbag 4 drives the inflation guide rod 3 to float in the vertical direction, and the inflation guide rod 3 drives the connecting plate 5 to move vertically, and the connecting plate 5 drives the toggle rack 501 to move in the vertical direction. At this time, the toggle gear 702 rotates under the meshing transmission, and the generator motor 701 starts to generate electricity and transmits it to the small transformer 8 and the GPS locator 9. The GPS locator 9 is powered on to send a positioning signal in real time.

[0051] The fourth step, if oil leakage occurs, the oil level in the oil tank 1 drops, and the airbag 4 drives the inflation guide rod 3 to move downward. At this time, the linkage rod 302 and the closing strip 303 move downward with the inflation guide rod 3. In this way, during the continuous downward movement, the closing strip 303 will block the oil drain pipe 202 to prevent leakage from the pipe mouth. At the same time, the rack 501 is moved no longer, the generator motor 701 stops generating electricity, and the GPS locator 9 stops sending positioning signals. The maintenance personnel are alarmed based on the disappearance of positioning.

Claims

1. A device for preventing oil leakage of a turbine speed governor, comprising an oil tank (1), wherein a sealing cover (101) is provided at the top of the oil tank (1), and characterized in that: An oil discharge mechanism is provided on one side of the bottom of the oil tank (1); an air charging guide rod (3) is vertically inserted and connected to the middle of the closing cover (101) and penetrates the oil tank (1); an air bag (4) is provided at the bottom of the air charging guide rod (3) and located inside the oil tank (1); a sealing member for sealing the oil discharge mechanism is provided between the bottom of the air charging guide rod (3) and the inner wall of the oil tank (1); and a self-generating positioning alarm mechanism for cooperating with the air charging guide rod (3) to provide a leakage alarm is provided on the outer wall of the oil tank (1); The self-generating positioning alarm mechanism comprises a placement box (7) fixedly connected to the outer wall of the oil tank (1); a generator motor (701) is arranged in the middle of the placement box (7); a small transformer (8) and a GPS locator (9) are arranged at the top of the placement box (7); a power transmission end of the generator motor (701) is electrically connected to a power input end of the small transformer (8); a power transmission end of the small transformer (8) is electrically connected to a power supply end of the GPS locator (9); and the inflation guide rod (3) is drivingly connected to the generator motor (701); A through slot is vertically opened at one end of the placement box (7) close to the oil tank (1); the output end of the generator motor (701) is horizontally inserted and connected in the through slot; a shifting gear (702) is sleeved on the output end of the generator motor (701) and located in the through slot; a connecting plate (5) is horizontally installed on the upper end of the inflation guide rod (3); a shifting rack (501) is fixedly connected to the bottom end of the connecting plate (5) away from the oil tank (1); the bottom of the shifting rack (501) is vertically inserted in the through slot and meshes with the outer wall of the shifting gear (702).

2. The device for preventing oil leakage of a turbine speed governor according to claim 1, characterized in that: A refueling pipe (102) is arranged on the side of the closing cover (101), and a sealing plug (103) for maintaining the sealing of the oil tank (1) is arranged on the top of the closing cover (101) and at the intersection with the inflation guide rod (3).

3. The device for preventing oil leakage of a turbine speed governor according to claim 1, characterized in that: The oil discharge mechanism comprises an oil discharge pipe (202) connected to the bottom of the oil tank (1); an electronic flow valve (2) is provided at one end of the oil discharge pipe (202) away from the oil tank (1); and an oil discharge pipe (201) is provided at one end of the electronic flow valve (2) away from the oil tank (1).

4. The device for preventing oil leakage of a turbine speed governor according to claim 3, characterized in that: The inner walls of both sides of the bottom of the oil tank (1) are provided with guide grooves (104), and the bottom of one of the guide grooves (104) is interconnected with the connection of the oil discharge pipe (202) in the oil tank (1), and the closing member comprises a linkage rod (302) symmetrically arranged on the lower side of the inflation guide rod (3) along a horizontal transverse midline, and the bottom ends of the two linkage rods (302) are fixedly connected with a closing strip (303), and the two closing strips (303) are respectively slidably inserted and connected in the two guide grooves (104).

5. The device for preventing oil leakage of a turbine speed governor according to claim 1, characterized in that: An air guide channel (301) for inflating the air bag (4) is vertically opened in the middle of the inflation guide rod (3), and an inflation mechanism for controlling the inflation of the air bag (4) is arranged at the top of the air guide channel (301).

6. The device for preventing oil leakage of a turbine speed governor according to claim 5, characterized in that: The inflation mechanism comprises an inflation head (6), the inflation head (6) being vertically inserted and connected to the top of the air guide channel (301), an inflation channel (601) being provided in the middle of the inflation head (6), a plurality of air leakage holes (602) being provided on the bottom inclined surface of the inflation head (6) passing through the inflation channel (601) and surrounding the inflation channel, and an air blocking ring (502) for sealing the air leakage holes (602) being installed in the air guide channel (301) and at the bottom of the inflation head (6).

7. The device for preventing oil leakage of a turbine speed governor according to claim 6, characterized in that: The air guide channel (301) is provided with limiting slide grooves on both sides of the inflation head (6), and limiting sliders (603) are fixedly connected to both sides of the bottom of the inflation head (6), and the limiting sliders (603) are slidably connected in the limiting slide grooves. A downward pressure spring (604) is provided in the limiting slide groove and at the top of the limiting slider (603).

8. A method for using the device for preventing oil leakage of a turbine speed governor according to claim 1, characterized in that: The following steps are involved: The first step is to first check the connection between the various devices, including the electrical connection between the generator motor (701), the small transformer (8) and the GPS locator (9) and the meshing between the shifting rack (501) and the shifting gear (702); The second step is to inflate the airbag (4) through the inflation guide rod (3), and when the airbag (4) is in a fully inflated state, the inflation is stopped and the inflation guide rod (3) is closed; The third step is to control the oil in the oil tank (1) to be collected or discharged through the electronic flow valve (2). At this time, the pressure inside the oil tank (1) will change, and the amount of oil will fluctuate continuously. At this time, the airbag (4) will float up and down with the liquid level of the oil. The airbag (4) drives the inflation guide rod (3) to float vertically. The inflation guide rod (3) drives the connecting plate (5) to move vertically. The connecting plate (5) drives the shifting rack (501) to move vertically. At this time, the shifting gear (702) rotates under the meshing transmission. The generator motor (701) starts to generate electricity and transmits it to the small transformer (8) and the GPS locator (9). The GPS locator (9) is powered on to send a positioning signal in real time. In the fourth step, if oil leakage occurs, the oil level in the oil tank (1) drops, the air bag (4) drives the inflation guide rod (3) to move downward, and the sealing member moves downward along with the inflation guide rod (3). In this way, during the continuous downward movement, the sealing member eventually blocks the pipe opening of the oil discharge mechanism in the oil tank (1) to prevent leakage from the pipe opening. At the same time, the rack (501) stops moving, the generator motor (701) stops generating electricity, the GPS locator (9) stops sending positioning signals, and the maintenance personnel receive an alarm based on the disappearance of positioning.

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