CN112411484A - Dam emergency door rapid braking method - Google Patents
Dam emergency door rapid braking method Download PDFInfo
- Publication number
- CN112411484A CN112411484A CN202011252256.3A CN202011252256A CN112411484A CN 112411484 A CN112411484 A CN 112411484A CN 202011252256 A CN202011252256 A CN 202011252256A CN 112411484 A CN112411484 A CN 112411484A
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- Prior art keywords
- generator
- door
- braking
- dam
- accident
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/20—Movable barrages; Lock or dry-dock gates
- E02B7/26—Vertical-lift gates
- E02B7/36—Elevating mechanisms for vertical-lift gates
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/20—Movable barrages; Lock or dry-dock gates
- E02B7/26—Vertical-lift gates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
- F03G7/08—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for recovering energy derived from swinging, rolling, pitching or like movements, e.g. from the vibrations of a machine
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Civil Engineering (AREA)
- Stopping Of Electric Motors (AREA)
Abstract
The invention discloses a rapid braking method for an emergency door of a dam. The braking of the accident door is realized by mainly adopting reverse torque generated by a generator, and meanwhile, the current in an excitation loop is adjusted by adjusting the resistance value of an adjustable resistor in the excitation loop of the generator, so that the size adjustment of the braking torque is realized. According to the invention, when the accident door is lowered, the rotating shaft is driven to rotate so as to enable the generator to generate electricity, and meanwhile, the reverse torque generated by the generator is utilized to realize the rapid braking of the accident door, so that the braking abrasion caused by the traditional friction type braking device is avoided, and the convenience of the rapid braking of the accident door is improved.
Description
Technical Field
The invention relates to the technical field of emergency of dam accidents, in particular to a method for quickly braking a dam accident door.
Background
Dam accident door is the emergent treatment equipment who is used for the emergent dam flood discharge mouth that cuts off of installing on the dam, when carrying out accident door closing throttle, move down through self gravity, realize the interception to dam rivers, the accident door is generally heavier, the in-process that puts down needs great brake force just can carry out the brake braking of accident door, what current brake braking mode adopted is the mode of friction braking, change kinetic energy into heat energy through the mode of friction, give off to the air and realize the purpose of braking, and in this braking mode, can cause the brake equipment wearing and tearing comparatively seriously, need change often, cause the maintenance cost too high, and simultaneously, when needing to improve the brake force, need increase more brake torque, cause the consumption of brake power energy consumption great, be unfavorable for energy-concerving and environment-protective requirement. Therefore, there is a need for those skilled in the art to design a method for braking an emergency door that can rapidly perform emergency door braking while reducing wear of the braking device.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the method for quickly braking the dam emergency door is provided, the existing emergency door braking mode is changed, the abrasion of a braking device is reduced, the convenience of braking force adjustment is improved, and the maintenance frequency and the cost of the braking device are reduced.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a rapid braking method for a dam accident door comprises the following steps:
s1: one end of a winch reel shaft of the dam accident door is connected with a generator, a rotor rotating shaft of the generator is connected with the winch reel shaft, an adjustable resistor and an alternating current-direct current converter are arranged on an excitation loop of the generator and communicated with an external power supply, and a heat dissipation resistor for consuming electric energy is arranged in a power generation loop of the generator;
s2: when the dam emergency door needs to be lowered, an excitation switch of the generator is turned on, when the emergency door begins to be lowered and moves, the winch shaft is driven to rotate, the winch shaft drives the rotating shaft of the rotor of the generator to rotate to generate power current, the rotating shaft of the rotor of the generator generates a reverse torque to limit the rotation of the winch shaft, and therefore rapid braking of the emergency door is achieved; meanwhile, the current generated by the generator is dissipated through the heat dissipation resistor;
s3: when the reverse torque generated by the generator needs to be increased so as to increase the braking torque of the accident door, the braking torque is increased by reducing the resistance value of the adjustable resistor on the excitation loop of the generator; on the contrary, the reverse torque generated by the generator needs to be reduced, so that the brake torque of the accident door is reduced, and the lowering speed of the accident door is increased by increasing the resistance value of the adjustable resistor on the excitation loop of the generator.
Further, in step S2, the operation of turning on the field switch of the generator may be implemented by providing a trigger device, which is matched with the lowering movement and the downward speed of the accident door.
Further, the triggering device is a mechanical triggering device or an electronic triggering device.
Further, the electronic trigger device is one of a displacement sensor and a speed sensor, or a combination of the displacement sensor and the speed sensor.
Furthermore, the winch shaft is also provided with a friction auxiliary brake device.
Compared with the prior art, the invention has the following beneficial effects:
(1) according to the invention, when the accident door is lowered, the rotating shaft is driven to rotate so as to enable the generator to generate electricity, and meanwhile, the reverse torque generated by the generator is utilized to realize the rapid braking of the accident door, so that the braking abrasion caused by the traditional friction type braking device is avoided, and the convenience of the rapid braking of the accident door is improved.
(2) The braking torque provided by the braking device can be conveniently realized through the resistance value of the adjustable resistor, and the convenience of controlling the braking torque of the accident door is improved.
(3) The generating current generated by the generator is dissipated to the air in the form of heat energy through the heat dissipation resistor, so that the environmental pollution is avoided, a clean equipment use environment is provided, and the ecological environment is effectively protected.
Drawings
Fig. 1 is a schematic structural view of the brake apparatus of the present invention.
Wherein, the names corresponding to the reference numbers are:
1-accident door, 2-winch, 3-winch shaft, 4-generator, 5-adjustable resistor, 6-heat dissipation resistor, 7-excitation switch, 8-trigger device and 9-friction auxiliary brake device.
Detailed Description
The present invention will be further described with reference to the following description and examples, which include but are not limited to the following examples.
As shown in fig. 1:
the utility model provides a dam accident door quick brake method, realizes the quick brake of accident door through the produced direction moment of torsion of generator, has avoided the brake wear that traditional friction formula brake equipment brought, promotes the convenience of accident door brake, and the method of its realization is as follows:
firstly, a generator 4 is connected and arranged at one end of a winch shaft 3 of a windlass 2 of a dam accident door 1, and when the generator 4 is connected, a rotor rotating shaft of the generator 4 is connected with the winch shaft 3. An adjustable resistor 5 and an alternating current-direct current converter 10 are arranged on an excitation loop of the generator 4 and are communicated with an external power supply, the alternating current-direct current converter 10 converts input alternating current into direct current to realize excitation of the generator, and the current in the excitation loop is realized through different resistance values of the adjustable resistor 5, so that the adjustment of the reverse torque of the generator is realized, wherein the adjustable resistor 5 can be realized by respectively connecting resistors with different resistance values in the adjustable resistor 5 through a contact set, and the adjustment of the resistance value of the resistor in the excitation loop is realized by changing different contacts on the contact set. Meanwhile, a heat dissipation resistor 6 is arranged in a power generation loop of the generator 4, and the heat dissipation resistor 6 of the generator dissipates the electricity generated by the generator in the atmosphere in a heat energy loss mode.
When the emergency door needs to be lowered for intercepting in dam treatment for emergency accidents, the excitation switch 7 of the generator 4 is opened to enable the excitation loop of the generator to generate current, so that the generator generates a magnetic field and realizes the power generation function of the generator, the winch shaft 3 is driven to rotate in the lowering process of the emergency door, the winch shaft 3 drives the rotor rotating shaft of the generator 4 to rotate to generate power and generate power generation current, meanwhile, a reverse torque is generated on the rotor rotating shaft of the generator 4 to limit the rotation of the winch shaft 3, and therefore the emergency door 1 is quickly braked; the current generated by the generator 4 is dissipated through the heat dissipation resistor 6;
according to the principle of the generator, when the current in the exciting circuit is increased, the magnetic field of the generator is correspondingly increased, so that the reverse torque generated by the generator is increased, and vice versa. When the reverse torque generated by the generator 4 needs to be increased so as to increase the braking torque of the accident door 1, the braking torque is increased by reducing the resistance value of the adjustable resistor 5 on the excitation loop of the generator 4; on the contrary, the reverse torque generated by the generator 4 needs to be reduced, so that the braking torque of the accident door 1 is reduced, and when the lowering speed of the accident door 1 is increased, the braking torque is realized by increasing the resistance value of the adjustable resistor 5 on the excitation loop of the generator 4.
In order to realize the linkage of the accident door and the excitation return switch of the generator and facilitate the automatic control of the accident door and the generator, the linkage action of the excitation switch 7 can be realized by arranging a trigger device 8, and the trigger device 8 can be a mechanical trigger device or an electronic trigger device or the combination of the mechanical trigger device and the electronic trigger device; the mechanical trigger device can be arranged in a spring plate mode, and when the accident door is put down and moves, the trigger spring plate is pressed down to trigger the excitation switch to be turned on; the electronic trigger device can be realized by a displacement sensor or a speed sensor or a mode of combining the displacement sensor and the speed sensor, the displacement sensor or the speed sensor is arranged at the position corresponding to the accident door, the lowering speed is generated when the accident door is lowered and displaced, the displacement sensor receives displacement movement or the speed sensor receives the speed change of the accident door to transmit a trigger signal, and the trigger signal is fed back to the excitation switch to realize the opening of the excitation switch.
Meanwhile, in order to further ensure the safety of the emergency door brake device, a set of friction auxiliary brake device is arranged on the other side of the winch shaft 3, and when the electric brake device is in an accident and cannot be effectively started, the friction auxiliary brake device can also be used as a standby brake device, so that the safety of the emergency door brake is ensured.
The above-mentioned embodiment is only one of the preferred embodiments of the present invention, and should not be used to limit the scope of the present invention, but all the insubstantial modifications or changes made within the spirit and scope of the main design of the present invention, which still solve the technical problems consistent with the present invention, should be included in the scope of the present invention.
Claims (5)
1. A rapid braking method for a dam accident door is characterized by comprising the following steps: the method comprises the following steps:
s1: one end of a winch shaft (3) of a winch (2) of the dam accident door (1) is connected with a generator (4), a rotor rotating shaft of the generator (4) is connected with the winch shaft (3), an adjustable resistor (5) and an alternating current-direct current converter (10) are arranged on an excitation loop of the generator (4) and are communicated with an external power supply, and a heat dissipation resistor (6) for consuming electric energy is arranged in a power generation loop of the generator (4);
s2: when the dam emergency door (1) needs to be lowered, an excitation switch (7) of a generator (4) is turned on, when the emergency door (1) begins to be lowered and moves, a winch shaft (3) is driven to rotate, the winch shaft (3) drives a rotor rotating shaft of the generator (4) to rotate to generate power current, the rotor rotating shaft of the generator (4) generates reverse torque to limit the rotation of the winch shaft (3), and therefore the emergency door (1) is quickly braked; meanwhile, the current generated by the generator (4) is dissipated through the heat dissipation resistor (6);
s3: when the reverse torque generated by the generator (4) needs to be increased so as to increase the braking torque of the accident door (1), the braking torque is realized by reducing the resistance value of the adjustable resistor (5) on the excitation loop of the generator (4); on the contrary, the reverse torque generated by the generator (4) needs to be reduced, so that the braking torque of the accident door (1) is reduced, and when the lowering speed of the accident door (1) is increased, the effect is achieved by increasing the resistance value of the adjustable resistor (5) on the excitation loop of the generator (4).
2. The method for rapidly braking an emergency door of a dam according to claim 1, wherein: in the step S2, the excitation switch (7) of the generator (4) is turned on, and the operation can be realized by arranging a trigger device (8) which is matched with the lowering movement and the lowering speed of the accident door (1).
3. The method for rapidly braking an emergency door of a dam according to claim 2, wherein: the trigger device (8) is a mechanical trigger device or an electronic trigger device.
4. A dam emergency door quick brake apparatus according to claim 3, wherein: the electronic trigger device is one of a displacement sensor and a speed sensor, or a combination of the displacement sensor and the speed sensor.
5. The method for rapidly braking an emergency door of a dam according to claim 4, wherein: the winch shaft (3) is also provided with a friction auxiliary brake device (9).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011252256.3A CN112411484A (en) | 2020-11-11 | 2020-11-11 | Dam emergency door rapid braking method |
| PCT/CN2021/109083 WO2022100152A1 (en) | 2020-11-11 | 2021-07-28 | Quick braking method for dam accident door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011252256.3A CN112411484A (en) | 2020-11-11 | 2020-11-11 | Dam emergency door rapid braking method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112411484A true CN112411484A (en) | 2021-02-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011252256.3A Pending CN112411484A (en) | 2020-11-11 | 2020-11-11 | Dam emergency door rapid braking method |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN112411484A (en) |
| WO (1) | WO2022100152A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022100152A1 (en) * | 2020-11-11 | 2022-05-19 | 四川华能宝兴河水电有限责任公司 | Quick braking method for dam accident door |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2543937Y (en) * | 2002-05-14 | 2003-04-09 | 川油广汉宏华有限公司 | Energy consumption braking winch for drill machine |
| CN200964062Y (en) * | 2006-11-09 | 2007-10-24 | 李金龙 | Auxiliary braking device for vehicle |
| CN102139838A (en) * | 2010-01-06 | 2011-08-03 | 株式会社日立产机系统 | Drive control device of hoist |
| CN102583184A (en) * | 2012-02-06 | 2012-07-18 | 青岛海西重机有限责任公司 | Electric energy consumption type backup emergency load release device for crane in power failure |
| KR101586997B1 (en) * | 2015-09-01 | 2016-01-20 | 금전기업 주식회사 | Emergency drive unit for opening and closing floodgates |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017201944A1 (en) * | 2017-02-08 | 2018-08-09 | Geze Gmbh | braking device |
| DE102017209526A1 (en) * | 2017-06-07 | 2018-12-13 | Zf Friedrichshafen Ag | A door moving device for a door, a door system having a door and a door moving device, and a method for moving a door |
| CN108442334B (en) * | 2018-03-22 | 2020-09-01 | 长沙三占惯性制动有限公司 | Power-off door-falling braking system for emergency quick gate of winch hoist |
| CN210655347U (en) * | 2019-09-25 | 2020-06-02 | 内蒙古海明矿业有限责任公司 | Inertia slippage preventing device of cloth trolley |
| CN213927965U (en) * | 2020-11-11 | 2021-08-10 | 四川华能宝兴河水电有限责任公司 | Dam emergency door quick brake device |
| CN112411484A (en) * | 2020-11-11 | 2021-02-26 | 四川华能宝兴河水电有限责任公司 | Dam emergency door rapid braking method |
-
2020
- 2020-11-11 CN CN202011252256.3A patent/CN112411484A/en active Pending
-
2021
- 2021-07-28 WO PCT/CN2021/109083 patent/WO2022100152A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2543937Y (en) * | 2002-05-14 | 2003-04-09 | 川油广汉宏华有限公司 | Energy consumption braking winch for drill machine |
| CN200964062Y (en) * | 2006-11-09 | 2007-10-24 | 李金龙 | Auxiliary braking device for vehicle |
| CN102139838A (en) * | 2010-01-06 | 2011-08-03 | 株式会社日立产机系统 | Drive control device of hoist |
| CN102583184A (en) * | 2012-02-06 | 2012-07-18 | 青岛海西重机有限责任公司 | Electric energy consumption type backup emergency load release device for crane in power failure |
| KR101586997B1 (en) * | 2015-09-01 | 2016-01-20 | 금전기업 주식회사 | Emergency drive unit for opening and closing floodgates |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022100152A1 (en) * | 2020-11-11 | 2022-05-19 | 四川华能宝兴河水电有限责任公司 | Quick braking method for dam accident door |
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| Publication number | Publication date |
|---|---|
| WO2022100152A1 (en) | 2022-05-19 |
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Application publication date: 20210226 |
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| RJ01 | Rejection of invention patent application after publication |