CN109808739B - Track circuit and method for detecting turnout steel rail breakage and sealing connection - Google Patents
Track circuit and method for detecting turnout steel rail breakage and sealing connection Download PDFInfo
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- CN109808739B CN109808739B CN201910099673.XA CN201910099673A CN109808739B CN 109808739 B CN109808739 B CN 109808739B CN 201910099673 A CN201910099673 A CN 201910099673A CN 109808739 B CN109808739 B CN 109808739B
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Abstract
The invention discloses a circuit and a method for detecting the break of turnout steel rails and sealing a connection track, wherein break sensors are respectively arranged on the upper planes of the bottoms of a left steel rail and a right steel rail close to one side of a track center, the break sensors are connected to monitoring equipment through a switching box and a connecting cable, the monitoring equipment is connected with a track circuit sealing circuit consisting of two groups of relays, each group of relays comprises a sealing execution relay and an intermediate relay, and each sealing execution relay is correspondingly connected with a sealing line; and after the CPU confirms that the switch rail is broken, outputting a sealing connection instruction to drive the intermediate relay to act, and switching on the sealing connection execution relay to complete the sealing connection of the track circuit. The on-line real-time protection monitoring can be carried out on the state of the turnout steel rail, the steel rail is effectively found to be broken in time, and the driving accident is effectively prevented by early warning.
Description
Technical Field
The invention relates to a turnout steel rail detection technical method, in particular to a turnout steel rail breaking and sealing connection track circuit and a turnout steel rail breaking and sealing connection track method.
Background
The driving accident caused by the broken rail of the turnout is a malignant derailment accident mostly, the driving is interrupted if the accident is light, and the train is overturned if the accident is heavy, so that a great amount of economic loss and serious adverse social influence are caused.
Although measures such as increasing the manual inspection frequency, improving the inspection method and establishing the inspection key point are adopted, the steel rail breakage monitoring device occupies more labor force, cannot inspect hidden parts, is difficult to timely and effectively find the hidden danger of the steel rail breakage, at present, the damage of the steel rail breakage seriously threatening the train operation safety has no perfect protection measure, and turnout steel rail breakage monitoring amorphous products and related similar products.
At present, the common means for daily inspection of the cracks or the breaks of the turnout steel rails is to regularly detect by adopting a manual inspection method, leakage inspection is easy to leak by adopting a manual inspection mode, and the breakage of the turnout steel rails is mostly generated when a locomotive passes through the turnout or changes a running line to move the turnout, so that the difficulty of finding the breakage of the steel rails is increased. The manual inspection needs a large amount of manpower and material resources, the working efficiency is low, the discovery difficulty is high, and the real-time monitoring can not be realized.
In the prior art, the real-time broken rail monitoring technology mainly comprises the technology of coating conductive rubber on a steel rail and the optical fiber real-time broken rail monitoring technology. However, the current real-time rail breakage detection technology directly sends alarm information to maintenance personnel after detecting rail breakage, the maintenance personnel cannot prevent a second vehicle after rail breakage from passing through the first time, and derailment accidents easily occur when the second vehicle passes through a rail breakage position.
The first prior art is as follows:
the technology of coating conductive rubber on the steel rail is that a layer of insulating paint is coated between the steel rail and the conductive rubber, after the insulating paint is completely dried, the proportioned conductive rubber is coated to be completely cured, and the conductive silica gel serves as a signal transmission conductor. And when the steel rail is broken, the conductive rubber is broken, and the monitoring device cannot receive a signal, so that whether the steel rail is broken or not is judged.
The first prior art has the following defects:
the conductive rubber material has the requirements of stable work under the conditions of ductility, hardness, strength, ageing resistance, interference resistance and field complex working conditions, and the conductive rubber on the market at present cannot meet the requirements, so that the construction period is long, and the field construction is complex.
The second prior art is:
the optical fiber real-time broken rail detection technology is a technical method for detecting by using standard single-mode optical fibers attached to a rail. The technology is characterized in that a light source is connected to one end of an optical fiber, and the other end of the optical fiber is connected with a receiver. When the rail is broken, the optical fiber is broken, and the light beam cannot reach the receiver, so that the rail is judged to be broken.
The second prior art has the following defects:
the optical fiber is extremely sensitive to HO-generated by water and moisture, the water and the moisture can expand cracks on the surface of the optical fiber, so that the strength of the optical fiber is remarkably reduced, and hydrogen generated by chemical reaction between the moisture and a metal material can cause the optical fiber to become brittle and break; the ductility of the optical fiber is only 1 percent, which is 20 percent lower than that of metal, the mechanical property is poor, and the optical fiber is easy to break under the interference of vibration; when cracks, impurities and bubbles exist in the optical fiber, the optical fiber is easy to break under certain tension; therefore, the optical fiber is used as a sensor to monitor the breakage of the steel rail, and the problems of high construction difficulty, high cost, difficult maintenance, abnormal alarm caused by easy breakage due to excessive external force vibration or bending and the like exist.
Disclosure of Invention
The invention aims to provide a circuit and a method for detecting the break of a turnout steel rail and sealing a connected rail.
The purpose of the invention is realized by the following technical scheme:
the invention relates to a track circuit for detecting the break and the seal of turnout steel rails, wherein break sensors are respectively arranged on the upper planes of the bottoms of a left steel rail and a right steel rail close to the track center, the break sensors are connected to monitoring equipment through a switching box and a connecting cable, the detecting equipment is connected with a track circuit seal circuit consisting of two groups of relays, each group of relays comprises a seal execution relay and an intermediate relay, and each seal execution relay is correspondingly connected with a seal line;
the monitoring equipment is arranged in an equipment box arranged between the two steel rails and is connected with the main control equipment, and the main control equipment comprises a CPU.
The invention discloses a method for detecting the break of a turnout steel rail and sealing the turnout steel rail by using a track circuit, which comprises the following steps:
when the CPU confirms that the switch rail is broken, the CPU outputs a first group of sealing connection instructions to drive the intermediate relay to act, the normally open contact of the intermediate relay is closed to conduct the power supply loop of the first sealing connection execution relay to the sealing connection execution relay, and the CPU locks the channel after receiving the current channel ready signal;
when the first group of seal-coupled execution relays are normally sealed, the CPU outputs a second group of seal-coupled instructions to drive the intermediate relay to act, the normally open contact of the intermediate relay is closed to conduct the power supply loop of the second seal-coupled execution relay to the seal-coupled execution relay, and the CPU locks the channel after receiving the current channel ready signal;
only when the two seal connectors execute the normal work of the relay, the seal connector loop of the track circuit can be opened.
According to the technical scheme provided by the invention, the circuit and the method for detecting the break of the turnout steel rail and the seal connection track can carry out online real-time protection monitoring on the state of the turnout steel rail, effectively find the break of the steel rail in time and early warn to effectively prevent the occurrence of driving accidents. The traffic signal device has the advantages of long service life, simplicity in operation, short construction period, low cost and easiness in maintenance, and can directly seal a track circuit to enable a corresponding signal machine to turn to a red light, and a turnout area corresponding to a driving control room operating console displays a red light band to prevent the next vehicle from entering a broken track area.
Drawings
Fig. 1 is a schematic diagram of a circuit installation for detecting the break of the turnout steel rail and sealing the turnout steel rail provided by the embodiment of the invention.
Fig. 2 is a schematic view of the mounting of the break sensor in the embodiment of the present invention.
Fig. 3 is a schematic flow chart of a method for detecting break of a turnout rail and sealing connection provided by an embodiment of the present invention.
Fig. 4 is a schematic diagram of a circuit principle for detecting the break of the turnout steel rail and sealing the turnout steel rail according to the embodiment of the invention.
Detailed Description
The embodiments of the present invention will be described in further detail below. Details which are not described in detail in the embodiments of the invention belong to the prior art which is known to the person skilled in the art.
The invention relates to a circuit and a method for detecting turnout steel rail break and sealing connection track, wherein the preferred specific implementation mode is as follows:
detect switch rail rupture and seal and connect track circuit and include: the upper planes of the bottoms of the left and right steel rails, which are close to the center of the track, are respectively provided with a break sensor, the break sensors are connected to monitoring equipment through a switching box and a connecting cable, the monitoring equipment is connected with two groups of relays, each group of relays comprises a sealing execution relay and an intermediate relay, the two groups of relays form a complete track sealing circuit, and each sealing execution relay is correspondingly connected with a sealing line;
the monitoring equipment is arranged in an equipment box arranged between the two steel rails and is connected with the main control equipment, and the main control equipment comprises a CPU.
The break sensor is manufactured and installed by the following method:
the method comprises the following steps of processing, molding and packaging a metal aluminum foil conductor in a sealed insulator to obtain a packaged break sensor, wherein the bottom surface of the break sensor is pasted on the upper plane of one side, close to a road center, of the bottom of a steel rail through double-sided adhesive tape, and a layer of high and low temperature resistant rubber strip is pasted on the top surface of the break sensor.
The method for detecting the turnout steel rail fracture and sealing the turnout steel rail fracture detection and sealing connection by the turnout steel rail fracture and sealing connection track circuit comprises the following steps:
when the CPU confirms that the switch rail is broken, the CPU outputs a first group of sealing connection instructions to drive the intermediate relay to act, the normally open contact of the intermediate relay is closed to conduct the power supply loop of the first sealing connection execution relay to the sealing connection execution relay, and the CPU locks the channel after receiving the current channel ready signal;
when the first group of sealing execution relays normally seal, the CPU outputs a second group of sealing instructions to drive the intermediate relay to act, the normally open contact of the intermediate relay is closed to conduct the power supply loop of the second sealing execution relay to the sealing execution relay, and the CPU locks the channel after receiving the current channel ready signal.
Only when the two seal connectors execute the normal work of the relay, the seal connector loop of the track circuit can be opened.
A sealing channel consisting of two sealing execution relays is opened to complete the sealing of the track circuit, and a GPRS module sends a sealing success short message;
when the CPU can not receive any one path of ready signal, the CPU releases the command and resends the path sealing command, the CPU still can not receive the path ready signal and abandons the sealing, and the system commands the GPRS module to send warning information of the track circuit which is not successfully sealed and connected to the mobile phone of the appointed personnel.
The real-time rail breakage detection technology can monitor the steel rail in real time, and can find the existence of the breakage of the steel rail in the first time, so that the warning can be sent to the train by changing the display state of the signal machine in time, and the disaster can be avoided.
The method for detecting the break of the turnout steel rail and sealing the track circuit can carry out online real-time protection monitoring on the state of the turnout steel rail, effectively find the break of the steel rail in time, early warn and effectively prevent the occurrence of driving accidents. The red light display device has the advantages of long service life, simplicity in operation, short construction period, low cost and easiness in maintenance, and can directly seal a track circuit to enable a corresponding signal machine to turn into a red light, and a turnout area corresponding to a driving room operating console displays a red light band to prevent a next train from entering a broken track area.
The specific embodiment, as shown in fig. 1 to 4:
in the examples the sensors are defined: the invention researches how to utilize metal conductor materials to monitor the physical change result of a steel rail from normal to 'broken', does not have accurate definition in the common classification of sensors, has the same points and different points, and can not be classified into any one of the categories, therefore, the 'broken' result is taken as the key word of the sensor, namely: and (4) breaking the sensor. In an embodiment, the sensor is a break sensor.
The embodiment of the method for detecting the break of the turnout steel rail (switch rail) comprises the following steps:
the metal aluminum foil conductor is processed and molded specially and packaged in a closed insulator, so that the metal aluminum foil conductor has good insulating property and strong anti-interference capability, does not threaten driving and can stably work for a long time under natural conditions. The packaged break sensor has good insulation property, can keep an isolated state with the steel rail for a long time, effectively avoids direct contact with the steel rail, and avoids direct crosstalk. According to the scheme, holes do not need to be drilled in the steel rail, the steel rail structure cannot be damaged, and the steel rail can be mounted under the condition that the steel rail structure is not damaged.
The real-time monitoring technology of the break sensor is to seal a material which takes a metal aluminum foil as a conductor in an insulator through surface treatment to prepare the sensor, and a layer of double-sided adhesive tape is adhered to the bottom layer of the sensor. During construction, the protective layer on the double-sided adhesive tape pasting layer is torn off and pasted to the upper plane of one side, close to the road center, of the bottom of the steel rail, and the high and low temperature resistant rubber strip is pasted to the sensor after pasting, so that the sensor is prevented from being damaged due to hitting of foreign objects. Then one end of two conducting wires is driven into the web of the left and right rails, and the other end is connected into the equipment. The break sensor is connected to the monitoring device through the adapter box and the connecting cable, the main control device sends a level value to the sensor, the level value is transmitted to the monitoring device through the sensor conductor loop, and the monitoring device judges whether the steel rail is broken or not through comparing the level difference at the two ends of the sensor. When the steel rail is broken, the sensor is broken, and the monitoring equipment monitors that one end of the sensor is at zero level, so that the conductor aluminum foil in the sensor is broken, and the steel rail is proved to be broken. Meanwhile, the equipment drives two sealing execution relays, the first sealing execution relay is switched on after the interval of 5 seconds, the second relay is switched on, when the two relays are switched on, the two steel rails are in short circuit through a sealing line, the corresponding switch signal machine is changed into a red light, the corresponding interval represents a red light band, and a vehicle is prevented from entering the interval.
The method for sealing and connecting the track circuit comprises the following steps:
the design of relay interlocking is adopted: the relay interlocking design is used for guaranteeing abnormal sealing connection of the track circuit caused by misoperation.
The relay interlocking scheme is composed of two intermediate relays and two seal connection execution relays. When the CPU confirms that the switch rail is broken, the CPU outputs a first group of sealing connection instructions to drive the intermediate relay to act, the normally open contact of the intermediate relay is closed to conduct the power supply loop of the first sealing connection execution relay to the sealing connection execution relay, and when the CPU receives a current channel ready signal, the channel is locked. When the first group of sealing execution relays normally seal, the CPU outputs a second group of sealing instructions to drive the intermediate relay to act, the normally open contact of the intermediate relay is closed to conduct the power supply loop of the second sealing execution relay to the sealing execution relay, and the CPU locks the channel after receiving the current channel ready signal.
And a sealing channel consisting of two sealing execution relays is opened to complete the sealing of the track circuit, and a GPRS module sends a sealing success short message.
When the CPU can not receive any ready signal, the CPU releases the command and resends the slave path sealing and connecting command, and the CPU still can not receive the ready signal of the path and abandons the sealing and connecting. And the system instructs the GPRS module to send the warning information of the track circuit which is not successfully connected to the mobile phone of the appointed person.
The technical scheme of the invention has the following beneficial effects:
the invention has simple operation, short construction period, low cost, easy maintenance and long-term and stable outdoor work, can seal the track circuit to change the annunciator in the corresponding section into the red light at the first time after the rail break is found, prevents the vehicle from entering the fault turnout area and effectively avoids the occurrence of train accidents. The device can be applied to railways in large batch, and can realize real-time on-line monitoring of the breakage of the steel rail.
In specific implementation, the break sensor conductor can be replaced by a conductor strip made of other metals with good conductivity, and the same effect is achieved through the packaging form of the invention.
The technical key points of the invention are as follows:
manufacturing a sensor as a conductor for signal transmission by utilizing the characteristics of metal;
the sensor manufactured by the packaging process has the advantages of long service life, simple operation, strong environmental adaptability, low cost and high efficiency;
and a relay interlocking technology is adopted to seal and connect the track circuit.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (1)
1. A method for detecting the break of a turnout steel rail and sealing and connecting a track circuit to detect the break of the turnout steel rail and sealing and connecting the turnout steel rail is characterized in that:
detect switch rail rupture and seal and connect track circuit includes:
the upper planes of the bottoms of the left and right steel rails, which are close to the center of the track, are respectively provided with a break sensor, the break sensors are connected to monitoring equipment through a switching box and a connecting cable, the monitoring equipment is connected with a track circuit sealing circuit consisting of two groups of relays, each group of relays comprises a sealing execution relay and an intermediate relay, and each sealing execution relay is correspondingly connected with a sealing line;
the monitoring equipment is arranged in an equipment box arranged between the two steel rails and is connected with main control equipment, and the main control equipment comprises a CPU;
processing, molding and packaging the metal aluminum foil conductor in a sealed insulator to prepare a packaged break sensor, wherein the bottom surface of the break sensor is pasted on the upper plane of one side of the bottom of the steel rail close to the road center through double-sided adhesive, and the top surface of the break sensor is pasted with a layer of high and low temperature resistant rubber strip;
the turnout steel rail breaking detection and sealing connection method comprises the following steps:
when the CPU confirms that the switch rail is broken, the CPU outputs a first group of sealing connection instructions to drive the group of intermediate relays to act, normally open contacts of the intermediate relays are closed to conduct a power supply loop of a first group of sealing connection execution relays, the sealing connection execution relays are closed, and the CPU locks the channel after receiving a current channel ready signal;
when the first group of seal-coupled execution relays are normally sealed, the CPU outputs a second group of seal-coupled instructions to drive the group of intermediate relays to act, the normally open contacts of the intermediate relays are closed to conduct the power supply circuit of the second group of seal-coupled execution relays, the seal-coupled execution relays are closed, and the CPU locks the channel after receiving the current channel ready signal;
only when the two seal-connection execution relays work normally, the seal-connection loop of the track circuit can be opened;
a sealing channel consisting of two sealing execution relays is opened to complete the sealing of the track circuit, and a GPRS module sends a sealing success short message;
when the CPU can not receive any one group of ready signals, the CPU releases the command and resends the group of sealing command, the CPU still can not receive the group of ready signals and abandons the sealing, and the system commands the GPRS module to send warning information of the track circuit which is not successfully sealed to the mobile phone of the designated personnel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910099673.XA CN109808739B (en) | 2019-01-31 | 2019-01-31 | Track circuit and method for detecting turnout steel rail breakage and sealing connection |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910099673.XA CN109808739B (en) | 2019-01-31 | 2019-01-31 | Track circuit and method for detecting turnout steel rail breakage and sealing connection |
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| CN109808739A CN109808739A (en) | 2019-05-28 |
| CN109808739B true CN109808739B (en) | 2021-06-08 |
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| CN201910099673.XA Active CN109808739B (en) | 2019-01-31 | 2019-01-31 | Track circuit and method for detecting turnout steel rail breakage and sealing connection |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3696243A (en) * | 1970-08-26 | 1972-10-03 | Marquardt Ind Products Co | Broken rail detector |
| CN100590014C (en) * | 2008-04-30 | 2010-02-17 | 同济大学 | Monitoring device for rail breakage of frog rail of center moveable rail |
| CN201917618U (en) * | 2010-11-25 | 2011-08-03 | 中铁六局集团有限公司 | Portable special device for railway signaling interlocking simulation test |
| CN105392260B (en) * | 2015-12-11 | 2017-12-05 | 北京城建智控科技有限公司 | Signalized control device |
| CN107600112B (en) * | 2017-09-26 | 2023-10-13 | 中国铁路通信信号上海工程局集团有限公司 | Semi-automatic blocking railway rail broken rail monitoring system and method |
| CN207683542U (en) * | 2017-12-17 | 2018-08-03 | 兴化市铁信电子工程有限公司 | A kind of warning device that monitoring railroad rails fracture |
| CN109263685A (en) * | 2018-10-29 | 2019-01-25 | 赵贺峰 | A kind of rail fracture warning device |
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