CN109444517B - Alarming method of electromagnetic brake fault alarming system for well drilling - Google Patents
Alarming method of electromagnetic brake fault alarming system for well drilling Download PDFInfo
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- CN109444517B CN109444517B CN201811232579.9A CN201811232579A CN109444517B CN 109444517 B CN109444517 B CN 109444517B CN 201811232579 A CN201811232579 A CN 201811232579A CN 109444517 B CN109444517 B CN 109444517B
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- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
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Abstract
The invention discloses an alarming method of an electromagnetic brake fault alarming system for well drilling, wherein the electromagnetic brake fault alarming system for well drilling comprises a main control board, an emergency stop button, an alarming horn and an alarming indicator lamp; when the brake failure is found, the main control board can forcibly drive the electromagnetic brake to perform brake operation and perform sound-light alarm by pressing the emergency stop button; the alarm method comprises the following steps: in the state of using the electromagnetic brake, indirectly judging whether the electromagnetic brake is normal or not by comparing the acquired corresponding relation between the given voltage and the output current; when the electromagnetic brake is not used, a trigger signal is sent to a given terminal of the electromagnetic brake control trigger plate at regular time and the working current of a stator coil of the electromagnetic brake is detected, so that whether the electromagnetic brake control trigger plate, the silicon controlled rectifier, the output protective tube and the electromagnetic brake stator coil are normal or not is indirectly judged.
Description
Technical Field
The invention relates to the field of petroleum drilling, in particular to an alarm method of an electromagnetic brake fault alarm system for drilling.
Background
Electromagnetic brake for well drilling (hereinafter referred to as "electromagnetic brake"): the brake is also called as a vortex magnetic brake, and an auxiliary brake form for controlling the drilling speed is achieved by utilizing the rotation of a rotor in a controllable magnetic field in a stator to cut magnetic lines of force, generating electric eddy current and forming reaction torque so as to consume the drilling potential energy. The characteristic is that the faster the speed of drilling down, the larger the reaction torque produced, can the effective control speed of drilling down.
The electromagnetic brake is particularly important in the actual tripping operation, and once the electromagnetic brake fails, serious crashing accidents of a traveling block can be caused, so that equipment and personnel are seriously injured.
The use of the electromagnetic brake: when an operator (driller) needs to control the electromagnetic brake to perform brake operation, an operating handle of the driller platform is operated, a given signal of the operating handle is sent to a control trigger plate in an electric control room, the control trigger plate controls the conduction angle of a silicon controlled rectifier so as to output adjustable direct current voltage of 0-300V, the voltage is sent to a stator coil of the electromagnetic brake after passing through an output protective tube, and therefore a rotor shaft of the electromagnetic brake generates brake torque (the rotor shaft and a winch roller shaft are mechanically connected), as shown in fig. 1.
Through the analysis of the electromagnetic brake control flow, the factors causing the electromagnetic brake failure mainly comprise the following points: (1) the power supply is disconnected; (2) burning out a stator coil of the electromagnetic brake; (3) the output protective tube is blown; (4) breakdown of the controlled silicon; (5) controlling the trigger board to fail; (6) the operating handle is faulty.
If the electromagnetic brake can prompt an operator immediately after the fault occurs, the operator can take measures in time (because a set of main brake can be used on site, the main brake can be used in advance to perform brake deceleration operation). Therefore, there is a need for a technology that can notify an operator in an audible and visual manner at the first time after the electromagnetic brake fails due to the above failure factors.
Disclosure of Invention
The invention aims to solve the technical problems and provides a high-safety alarming method of an electromagnetic brake fault alarming system for well drilling.
In order to solve the technical problems, the invention adopts the following technical scheme:
an alarming method of an electromagnetic brake fault alarming system for well drilling is disclosed, wherein the electromagnetic brake fault alarming system for well drilling comprises a main control panel and an emergency operation and sound-light alarming device, and the emergency operation and sound-light alarming device comprises an emergency stop button, an alarming horn and an alarming indicator light; when the driller prepares to brake and finds that the brake is out of order, the master control board can forcibly drive the electromagnetic brake to perform brake operation after receiving an emergency stop signal by pressing the emergency stop button, and simultaneously the master control board controls the alarm horn and the alarm indicator lamp to perform sound-light alarm so as to remind an operator;
the alarm method comprises the following steps:
(1) the main control board collects the power supply of the electromagnetic brake, when the power supply is cut off, an operator is informed within 1 second, and meanwhile, the main control board controls the alarm horn and the alarm indicator lamp to carry out sound-light alarm;
(2) the voltage of a given terminal of an electromagnetic brake control trigger plate is called given voltage for short, the working current of a stator coil of the electromagnetic brake is called output current for short, the given voltage is collected by a main control plate in real time, and the relation between the given voltage and the output current is measured actually as follows:
firstly, when the output current is 0-3A: the output current collection value is a given voltage collection value of 8.71;
and when the output current is 3-9A: the collection value of the output current is 8.69 of the collection value of the given voltage;
and when the output current is 9-17A: the collection value of the output current is 8.67 of the collection value of the given voltage;
when the output current is more than 17A: the collection value of the output current is a given voltage collection value of 8.63;
according to the actual measurement formula, when the main control board detects that the difference between the actual difference value between the given voltage and the output current and the theoretical difference value between the given voltage and the output current is too large, the electromagnetic brake is abnormal, the main control board controls an alarm loudspeaker and an alarm indicator lamp to give an audible and visual alarm to an operator, and meanwhile, a related alarm code is displayed on an LED nixie tube on the main control board;
(3) when the electromagnetic brake is not used, the main control board sends out 0.1V voltage to a given terminal of the electromagnetic brake control trigger board at intervals of a certain time, and if the electromagnetic brake control trigger board, the controlled silicon, the output protective tube and the electromagnetic brake stator coil are all normal, 0.9A current can be detected within 5 milliseconds according to field tests; if the current is not detected within the specified time, the electromagnetic brake control trigger plate, the controllable silicon, the output protective tube and the electromagnetic brake stator coil have the fault places, the main control board controls the alarm horn and the alarm indicator lamp to give out sound-light alarm to the operator, and meanwhile, the LED nixie tube on the main control board displays the related alarm codes.
The invention has the beneficial effects that: after the electromagnetic brake fails, the electromagnetic brake can inform an operator in an acousto-optic mode at the first time, so that the safety of operation is greatly improved.
Drawings
FIG. 1 is a flow chart of electromagnetic brake control;
fig. 2 is a functional block diagram of the main control board in the present invention.
Detailed Description
The invention is described in further detail below with reference to the following figures and detailed description:
referring to fig. 2, the electromagnetic brake fault alarm system for drilling in the invention is composed of a main control board arranged beside an electromagnetic brake control box of an electric control room and an emergency operation and sound-light alarm device arranged on a driller operation table.
1. The core of the main control board adopts a C8051F310 single chip microcomputer produced by Silicon Laboratories, and a 10-bit AD converter is arranged in the single chip microcomputer and is used for acquiring the working current of the electromagnetic brake stator coil (directly connected in parallel on an original ammeter for acquisition) and a given signal from an operating handle of a driller operating console (directly connected in parallel on a given terminal of an electromagnetic brake control trigger board for acquisition) in real time in the system.
The main control board functions are detailed as follows:
(1) the main control board collects the power supply of the electromagnetic brake, and when the power supply is disconnected, an operator can be informed within 1 second.
(2) The device collects the voltage (given voltage for short) of a given terminal of the electromagnetic brake control trigger plate in real time, and the relation between the given voltage and the working current (output current for short) of the electromagnetic brake stator coil is measured by the device as follows:
firstly, when the output current is 0-3A: the output current collection value is a given voltage collection value of 8.71;
and when the output current is 3-9A: the collection value of the output current is 8.69 of the collection value of the given voltage;
and when the output current is 9-17A: the collection value of the output current is 8.67 of the collection value of the given voltage;
when the output current is greater than 17A: the collection value of the output current is a given voltage collection value of 8.63;
according to the actual measurement formula, when the main control board detects that the difference between the actual difference value between the given voltage and the output current and the theoretical difference value between the given voltage and the output current is too large, the electromagnetic brake is abnormal, an audible and visual alarm can be given to an operator, and meanwhile, a related alarm code is displayed on an LED nixie tube on the main control board.
(3) Under the state that electromagnetic brake is not used (can judge through the voltage that detects electromagnetism brake control trigger plate given terminal), the main control board interval is set for 2 seconds here and sends 0.1V voltage (the singlechip IO mouth output 3.3V high level can, then can be very light through resistance partial pressure obtain 0.1V output voltage) to "electromagnetism brake control trigger plate given terminal", if electromagnetism brake control trigger plate, the silicon controlled rectifier, output protective tube, under the electromagnetism brake stator coil all normal condition, obtain according to field test, can detect 0.9A electric current (the operating current of electromagnetism brake stator coil) in 5 milliseconds. If the current is not detected within the specified time, the fault places in the electromagnetic brake control trigger plate, the controllable silicon, the output protective tube and the electromagnetic brake stator coil are indicated, so that an audible and visual alarm can be given to an operator, and meanwhile, a related alarm code is displayed on an LED nixie tube on the main control panel (the normal work of the drilling operation cannot be influenced if the operation is carried out at the actual measurement interval of 2 seconds).
The technical points of the invention are as follows:
in the state of using the electromagnetic brake, the correspondence between the acquired voltage of the given terminal of the trigger plate and the acquired working current of the stator coil of the electromagnetic brake is compared to indirectly judge whether the electromagnetic brake is normal.
And secondly, under the condition that the electromagnetic brake is not used, sending a trigger signal to a given terminal of the electromagnetic brake control trigger plate at regular time and detecting the working current of the stator coil of the electromagnetic brake to indirectly judge whether the electromagnetic brake control trigger plate, the silicon controlled rectifier, the output protective tube and the electromagnetic brake stator coil are normal.
2. The emergency operation and sound-light alarm device consists of an emergency stop button, an alarm horn and an alarm indicator lamp. When the driller prepares for braking and finds that the brake is out of order (the operating handle is in fault), the main control board can forcibly drive the electromagnetic brake to perform braking operation (the electromagnetic brake control trigger board is provided with 5V direct-current voltage for a given terminal) after receiving an emergency stop signal by pressing the emergency stop button. When the main control board detects the fault of the electromagnetic brake, the signals of the alarm horn and the alarm indicator lamp are transmitted to the emergency operation and sound-light alarm device for reminding operators.
In summary, the present invention is not limited to the above-mentioned embodiments, and those skilled in the art can propose other embodiments within the technical teaching of the present invention, but these embodiments are included in the scope of the present invention.
Claims (1)
1. The alarming method of the electromagnetic brake fault alarming system for well drilling is characterized in that the electromagnetic brake fault alarming system for well drilling comprises a main control panel and an emergency operation and sound-light alarming device, wherein the emergency operation and sound-light alarming device comprises an emergency stop button, an alarming horn and an alarming indicator light; when the driller prepares to brake and finds that the brake is out of order, the master control board can forcibly drive the electromagnetic brake to perform brake operation after receiving an emergency stop signal by pressing the emergency stop button, and simultaneously the master control board controls the alarm horn and the alarm indicator lamp to perform sound-light alarm so as to remind an operator;
the alarm method comprises the following steps:
(1) the main control board collects the power supply of the electromagnetic brake, when the power supply is cut off, an operator is informed within 1 second, and meanwhile, the main control board controls the alarm horn and the alarm indicator lamp to carry out sound-light alarm;
(2) the voltage of a given terminal of an electromagnetic brake control trigger plate is called given voltage for short, the working current of a stator coil of the electromagnetic brake is called output current for short, the given voltage is collected by a main control plate in real time, and the relation between the given voltage and the output current is measured actually as follows:
firstly, when the output current is 0-3A: the output current collection value is a given voltage collection value of 8.71;
and when the output current is 3-9A: the collection value of the output current is 8.69 of the collection value of the given voltage;
and when the output current is 9-17A: the collection value of the output current is 8.67 of the collection value of the given voltage;
when the output current is more than 17A: the collection value of the output current is a given voltage collection value of 8.63;
according to the actual measurement formula, when the main control board detects that the difference between the actual difference value between the given voltage and the output current and the theoretical difference value between the given voltage and the output current is too large, the electromagnetic brake is abnormal, the main control board controls an alarm loudspeaker and an alarm indicator lamp to give an audible and visual alarm to an operator, and meanwhile, a related alarm code is displayed on an LED nixie tube on the main control board;
(3) when the electromagnetic brake is not used, the main control board sends out 0.1V voltage to a given terminal of the electromagnetic brake control trigger board at intervals of a certain time, and if the electromagnetic brake control trigger board, the controlled silicon, the output protective tube and the electromagnetic brake stator coil are all normal, 0.9A current can be detected within 5 milliseconds according to field tests; if the current is not detected within the specified time, the electromagnetic brake control trigger plate, the controllable silicon, the output protective tube and the electromagnetic brake stator coil have the fault places, the main control board controls the alarm horn and the alarm indicator lamp to give out sound-light alarm to the operator, and meanwhile, the LED nixie tube on the main control board displays the related alarm codes.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811232579.9A CN109444517B (en) | 2018-10-22 | 2018-10-22 | Alarming method of electromagnetic brake fault alarming system for well drilling |
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| CN201811232579.9A CN109444517B (en) | 2018-10-22 | 2018-10-22 | Alarming method of electromagnetic brake fault alarming system for well drilling |
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| CN109444517A CN109444517A (en) | 2019-03-08 |
| CN109444517B true CN109444517B (en) | 2020-09-29 |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2111363U (en) * | 1991-05-08 | 1992-07-29 | 四川石油管理局川西北矿区 | Electromagnetic brake anti-churn drill device |
| JP5653537B2 (en) * | 2011-12-12 | 2015-01-14 | 三菱電機株式会社 | Electromagnetic brake condition diagnosis apparatus and method |
| CN204750149U (en) * | 2015-06-12 | 2015-11-11 | 吴浩楠 | Direct type brake fault pretest alarm system |
| CN204737680U (en) * | 2015-06-19 | 2015-11-04 | 中国石油集团西部钻探工程有限公司 | Well drilling electromagnetism brake failure hydraulic pressure dish emergency brake arrangement that stops |
| CN206235913U (en) * | 2016-11-01 | 2017-06-09 | 清能德创电气技术（北京）有限公司 | A kind of electromagnetic brake control device |
| CN108167356B (en) * | 2017-12-26 | 2021-03-05 | 北京金风科创风电设备有限公司 | State detection circuit and state detection method for electromagnetic brake |
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Effective date of registration: 20210720 Address after: 300457 Tianjin Binhai New Area Development Zone Second Avenue 83, China Petroleum Tianjin building Bohai Drilling Engineering Co., Ltd. Patentee after: CNPC Bohai Drilling Engineering Co.,Ltd. Patentee after: CHINA NATIONAL PETROLEUM Corp. Address before: 300457 Tianjin Binhai New Area Development Zone Second Avenue 83, China Petroleum Tianjin building Bohai Drilling Engineering Co., Ltd. Patentee before: CNPC Bohai Drilling Engineering Co.,Ltd. |