CN110248426B - Variable-frequency heating system for coupler buffer system and heating device thereof - Google Patents
Variable-frequency heating system for coupler buffer system and heating device thereof Download PDFInfo
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- CN110248426B CN110248426B CN201910594187.5A CN201910594187A CN110248426B CN 110248426 B CN110248426 B CN 110248426B CN 201910594187 A CN201910594187 A CN 201910594187A CN 110248426 B CN110248426 B CN 110248426B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
- B61G7/00—Details or accessories
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B1/00—Details of electric heating devices
- H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
- H05B1/0227—Applications
- H05B1/023—Industrial applications
- H05B1/0236—Industrial applications for vehicles
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Abstract
The invention provides a variable-frequency heating system for a coupler buffer system, which mainly comprises a controller, a memory, a working circuit, a feedback circuit, a debugging computer and a heating device. The original heating of the coupling end surface of the coupler buffering device is changed into full-range staged heating of key parts of the coupler buffering device, so that the coupling end surface of the coupler buffering device cannot be coupled and marshalled due to freezing, clamping stagnation and the like, the loss or reduction of the performance of the buffer in a low-temperature environment and the loss or reduction of the function of the coupler buffering device due to insufficient thrust of a pneumatic assembly are avoided, and the function realization and the driving safety of the coupler buffering device in a high-cold environment are guaranteed.
Description
Technical Field
The invention relates to a heating device of a coupler device, in particular to a variable-frequency heating system for a coupler buffering system and a heating device thereof, belonging to the technical field of coupler buffering.
Background
The coupler buffer device is one of key parts of a rail transit vehicle, and in order to ensure normal use of the coupler buffer device in a low-temperature environment, an electric heating device is usually adopted to heat a coupler coupling end face.
At present, a heating system for a conventional coupler buffer device generally adopts a constant-voltage constant-power heating mode, as shown in the attached drawings 6 and 7, a knife switch 1 and a circuit breaker 2 are adopted to carry out total on-off control on the heating system, the heating system is controlled and installed in an electric heating belt 5 state of a coupler body 6 through a normally open contactor 3, a contact pin 4 is used for realizing the block assembly and connection of the heating system, the electric heating belt 5 is symmetrically fixed on the coupler body 6 close to a coupling end face position through a screw 7, the contactor 3 is in a disconnection state under a normal working condition, the electric heating belt 5 does not work, the contactor 3 is pressed down under a heating working condition, a circuit is closed-loop, current passes through a heating coil in the electric heating belt 5 to generate joule heat and is conducted to the coupler body 6, the coupler is heated, and the purpose that the coupling device is prevented from being frozen to influence on vehicle marshalling is achieved.
But current heating system for coupling buffer heats coupler body even end face department, can't ensure the realization of other key spare parts normal function of coupling buffer under low temperature environment, and the heating range is less, and current heating system energy dissipation is high, and the heating pattern is single, and no control feedback, low temperature adaptability is relatively poor, can't ensure coupling buffer function realization and driving safety under the severe cold environment.
Disclosure of Invention
The invention provides a heating device for a coupler buffer system and a variable frequency heating system thereof, aiming at the technical problems, the embedded variable frequency heating system for the coupler buffer device based on iterative correction control is provided, so that the problems of single heating mode, small range, high heat dissipation and poor low-temperature adaptability of the existing heating system for the coupler buffer device are effectively solved.
The technical scheme for solving the technical problems is as follows: provides a variable-frequency heating system for a coupler buffer system, which mainly comprises a controller, a memory, a working circuit, a feedback circuit, a debugging computer and a heating device,
the controller is an ARM processor or other microprocessors and is used for controlling the execution of functions of the temperature control modules at all positions of the system, receiving characteristic parameters of the preprocessing circuit and feedback parameters of the temperature control modules, and outputting and controlling the working circuit based on an iterative correction control program;
the memory is EEPROM, FLASH or other memory with read-write function, and is used for storing control program, original parameters and operation result;
the working circuit consists of a power supply module, a circuit breaker, a rectifying module, a voltage stabilizing module and an inverting module, is used for receiving the output of the controller, interpreting the output into an execution command and finally acting on the electric heating equipment in each temperature control module;
the feedback circuit feeds back the working condition or output of each temperature control module through indicating equipment or feedback signals and feedback parameters;
the debugging computer is used for inputting, modifying and debugging system programs and system parameters, and accesses the system through a reserved serial port in the early debugging stage;
the heating device consists of a temperature control module and a junction box and is used for heating key parts of the coupler buffer system, collecting temperature parameters of the key parts of the system and transmitting the temperature parameters to the controller, wherein the temperature control module comprises a coupling end surface temperature control module, a pneumatic device temperature control module and a buffer temperature control module; the indicating device in the feedback circuit is an indicator light.
In the variable-frequency heating system for the coupler buffer system, the controller, the memory, the working circuit and the feedback circuit adopt the embedded module and are integrated into the circuit board, and the integrated circuit board is arranged in the junction box of the coupler buffer device.
In a further limited technical scheme of the invention, the heating device for the coupler buffer system comprises a junction box and a temperature control module which are arranged on a coupler body of the coupler; the junction box is connected with the coupling end surface temperature control module, the pneumatic device temperature control module and the buffer temperature control module through leads respectively to supply power to and control the corresponding temperature control modules; the coupling end surface temperature control module is fixedly arranged on the end surface of the coupler body of the coupler and is subjected to insulation treatment; the pneumatic device temperature control module is fixedly arranged on the outer sides of the unhooking cylinder and the pushing cylinder, and a heat insulation layer is arranged on the outer side of the pneumatic device temperature control module; and the buffer temperature control module is fixedly arranged at the end part of the coupler body buffer.
In the heating device for the coupler buffering system, the coupling end surface temperature control module comprises a first electric heating pipe and a first temperature sensor which are symmetrically inserted into the coupling end surface installation cavity of the coupler body; and then the first electric heating pipe is packaged and fixed in the mounting cavity through a screw and a first protection plate.
In the heating device for the coupler buffering system, the gap between the electric heating pipe and the coupler body installation cavity is filled with the insulating heat conduction material.
According to the heating device for the coupler buffer system, the pneumatic device temperature control module comprises the electric heating ring and the heat preservation layer which are wrapped on the outer sides of the unhooking cylinder and the pushing cylinder, the outer side of the heat preservation layer is wrapped by the fixing plate, and the fixing plate is fixedly installed through the fastening assembly.
In the heating device for the coupler buffer system, the buffer temperature control module comprises a second electric heating pipe and a second protection plate, the second electric heating pipe is inserted into a heating pipe installation cavity at the end part of the buffer, the second electric heating pipe is limited and fixed at the opening of the buffer heating pipe installation cavity through the second protection plate, and a second temperature sensor is fixedly installed on the end surface of the buffer; and a gap between the second electric heating pipe and the heating pipe installation cavity of the buffer is filled with an insulating heat conduction material, and the opening of the heating pipe installation cavity is sealed by silica gel.
A control method for a variable frequency heating system of a coupler buffer system comprises the following steps: under the normal working condition of the coupler buffer device, the power supply module supplies power to the whole embedded variable-frequency heating device, when the circuit breaker is switched on, the power supply supplies power to a working circuit, and the temperature control module supplies the output temperature y of each key part of the coupler buffer devicek(t) feeding back to the controller if the output temperature yk(t) is greater than the set temperature y in the memoryd(t), the controller disconnects the digital switch, and the variable frequency heating circuit does not work;
when the output temperature yk(t) is less than the set temperature y in the memoryd(t) when the working circuit is connected with the digital switch, the variable frequency heating circuit is automatically started; the input alternating current is converted into the alternating current through the rectifying module and the voltage stabilizing moduleRectifying and filtering into direct current, transmitting circuit parameters to a controller, and reading initial input u by the controller0(t) and transmitting the current to an inversion module, executing a program by the inversion module, converting direct current into alternating current with corresponding frequency, heating corresponding key parts of the coupler buffer device by the temperature control module under the action of the current, and measuring response output temperature y by the temperature sensork(t) feeding back to the controller;
controller compares response output temperature yk(t) and the set temperature yd(t) obtaining a response error ek(t) and obtaining the next input u by open-loop PID type learning law correctionk+1(t), writing dynamic storage, transmitting to the controller, and outputting response and feedback again by the controller;
by continuously carrying out iterative cycle and parameter correction, the convergence response error is close to the set temperature ydAnd (t) achieving the purpose of system control.
A coupler buffering system comprises a coupler buffering device and the heating device.
The invention has the beneficial effects that: compared with the prior art, the invention changes the original heating of the coupling end surface of the coupler buffer device into the full-range graded heating of key parts of the coupler buffer device, thereby not only preventing the coupling end surface of the coupler buffer device from being incapable of coupling and marshalling due to icing, clamping stagnation and the like, but also avoiding the loss or reduction of the performance of the buffer in a low-temperature environment and the loss or reduction of the function of the coupler buffer device caused by insufficient thrust of a pneumatic assembly. The heating mode is from original constant voltage constant power heating to the variable frequency heating based on iteration correction control, has realized coupling buffer heating system's self-adaptation adjustment and hierarchical heating, has solved coupling buffer heating system energy dissipation height, and the heating pattern is single, heats the not good problem of effect under the high and cold environment, has improved coupling buffer's adaptability to the low temperature environment greatly, and the security of vehicle operation.
Drawings
Fig. 1 is a schematic structural diagram of a coupler draft gear according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a temperature control module on a coupling end face according to an embodiment of the present invention.
FIG. 3 is a cross-sectional view of a temperature control module of a pneumatic device in accordance with an embodiment of the present invention.
Fig. 4 is a bottom view of a temperature control module of a pneumatic device in accordance with an embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a buffer temperature control module according to an embodiment of the invention.
Fig. 6 is a circuit diagram of a prior art solution.
Fig. 7 is a schematic diagram of a prior art solution.
Fig. 8 is a schematic diagram of the operation of the system of an embodiment of the present invention.
Detailed Description
Example 1
The variable-frequency heating system for the coupler buffer system mainly comprises a controller, a memory, a working circuit, a feedback circuit, a debugging computer and a temperature control module; the controller is an ARM processor or other microprocessors and is used for controlling the execution of functions of the temperature control modules at all positions of the system, receiving characteristic parameters of the preprocessing circuit and feedback parameters of the temperature control modules, and outputting and controlling the working circuit based on an iterative correction control program; the memory is EEPROM, FLASH or other memory with read-write function, and is used for storing control program, original parameters and operation result; the working circuit consists of a power supply module, a circuit breaker, a rectifying module, a voltage stabilizing module and an inverting module, is used for receiving the output of the controller, interpreting the output into an execution command and finally acting on the electric heating equipment in each temperature control module; the feedback circuit feeds back the working condition or output of each temperature control module through the indicator lamp; the debugging computer is used for inputting, modifying and debugging system programs and system parameters, and accesses the system through a reserved serial port in the early debugging stage; the temperature control module is used for heating key parts of the coupler buffer system, collecting temperature parameters of the key parts of the system and transmitting the temperature parameters to the controller, and the temperature control module mainly comprises a coupling end face temperature control module 8, a pneumatic device temperature control module 9, a buffer temperature control module 10 and a junction box 7.
The embedded modules of the controller, the memory, the working circuit, the feedback circuit and the like are integrated into a circuit board, are installed in the junction box 7 of the coupler buffer device, and reserve a working serial port of a debugging computer. The junction box 7 is connected with the coupling end surface temperature control module 8, the pneumatic device temperature control module 9 and the buffer temperature control module 10 through leads respectively, and supplies power to and controls the corresponding temperature control modules; the coupling end surface temperature control module 8 is fixedly arranged on the end surface of the coupler body of the coupler and is used for insulating the coupling end surface temperature control module 8; the pneumatic device temperature control module 9 is fixedly arranged on the outer side of the unhooking cylinder and the pushing cylinder 15, and a heat insulation layer is arranged on the outer side of the pneumatic device temperature control module 9; the draft gear temperature control module 10 is fixedly mounted to the end of a coupler body draft gear 20.
The coupling end surface temperature control module 8 of the embodiment comprises a first electric heating pipe 11 and a first temperature sensor 12 which are symmetrically inserted into a coupling end surface mounting cavity of a coupler body of the coupler; then the first electric heating tube 11 is packaged and fixed in the mounting cavity through a screw 13 and a first protection plate 14; and insulating heat conduction materials are filled in the gap between the first electric heating pipe 11 and the coupler body installation cavity. Pneumatic means temperature control module 9 is including the parcel at the electrical heating circle 16 and the heat preservation 17 in unhook cylinder and propelling movement cylinder 15 outside, passes through fixed plate 18 parcel in the heat preservation 17 outside, and fixed plate 18 is installed fixedly through fastening component 19. The buffer temperature control module 10 comprises a second electric heating pipe 11 'and a second protection plate 14', the second electric heating pipe 11 'is inserted into a heating pipe installation cavity at the end part of the buffer 20, the second electric heating pipe 11' is limited and fixed at the opening of the heating pipe installation cavity of the buffer 20 through the second protection plate 14', and a second temperature sensor 12' is fixedly installed on the end surface of the buffer 20; and a gap between the second electric heating pipe 11' and the heating pipe installation cavity of the buffer 20 is filled with an insulating heat conduction material, and the opening of the heating pipe installation cavity is sealed by silica gel.
And writing the control program and the system parameters into the memory by using a debugging computer through a reserved serial port, and calling and executing the program in the memory by using the controller. Under the normal working condition of the coupler buffer device, the power supply module supplies power to the whole embedded variable-frequency heating system, when the circuit breaker is switched on, the power supply supplies power to a working circuit, and the temperature control module supplies the output temperature y of each key part of the coupler buffer devicek(t) feedback to controlIf the temperature y is outputk(t) is greater than the set temperature y in the memorydAnd (t), the controller turns off the digital switch, and the variable frequency heating circuit does not work. When the output temperature yk(t) is less than the set temperature y in the memorydAnd (t), the working circuit is connected with the digital switch, and the variable-frequency heating circuit is automatically started. The input alternating current is rectified and filtered into direct current through the rectifying module and the voltage stabilizing module, circuit parameters are transmitted to the controller, and the controller reads initial input u0(t) and transmitting the current to an inversion module, executing a program by the inversion module, converting direct current into alternating current with corresponding frequency, heating corresponding key parts of the coupler buffer device by the temperature control module under the action of the current, and measuring response output temperature y by the temperature sensorkAnd (t) feeding back to the controller. Controller compares response output temperature yk(t) and the set temperature yd(t) obtaining a response error ek(t) and obtaining the next input u by open-loop PID type learning law correctionk+1And (t) writing the dynamic storage, transmitting the dynamic storage to the controller, and outputting response and feedback again by the controller. The system continuously performs iterative cycle and parameter correction, converges response error, and approaches to set temperature ydAnd (t) achieving the purpose of system control.
In the embodiment of the invention, the temperature setting of the temperature control module 8 of the coupling end face is T1, the temperature setting of the temperature control module 9 of the pneumatic device is T2, and the temperature setting of the temperature control module 10 of the buffer is T3, the invention includes but is not limited to the temperature control modules, a user can access a debugging computer to a system through a reserved serial port to set the temperature setting of each temperature control module, only the temperature control module 8 of the coupling end face works under the low temperature condition of T1-T2 (T2< T1<0 ℃), and under the severe cold condition of T2-T3 (T3< T2), the temperature control module 9 of the pneumatic device works except the temperature control module 8 of the coupling end face, and all the temperature control modules are started under the extremely cold condition below T3, so that the key parts of the buffer device of the coupler are heated in a grading manner. The feedback circuit acquires the working condition of each temperature control module and indicates the working condition or the measured temperature of the temperature control module.
The embodiment of the invention realizes the self-starting of the embedded variable frequency heating system of the coupler buffer device and the self-adaptive adjustment based on the iterative correction control, can automatically switch on and off the heating circuit according to the feedback temperature of each temperature control module, selects the heating range, has the advantages of high efficiency, small energy dissipation, high low-temperature adaptability and the like, and solves the problem that the coupler buffer device has reduced functions in a high-cold environment and influences the normal use.
In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.
Claims (10)
1. The utility model provides a frequency conversion heating system for coupling buffer system, mainly by controller, memory, working circuit, feedback circuit, debugging computer and heating device constitute which characterized in that:
the controller is an ARM processor or other microprocessors and is used for controlling the execution of functions of the temperature control modules at all positions of the system, receiving characteristic parameters of the preprocessing circuit and feedback parameters of the temperature control modules, and outputting and controlling the working circuit based on an iterative correction control program;
the memory is EEPROM, FLASH or other memory with read-write function, and is used for storing control program, original parameters and operation result;
the working circuit consists of a power supply module, a circuit breaker, a rectifying module, a voltage stabilizing module and an inverting module, is used for receiving the output of the controller, interpreting the output into an execution command and finally acting on the electric heating equipment in each temperature control module;
the feedback circuit feeds back the working condition or output of each temperature control module through indicating equipment or feedback signals and feedback parameters;
the debugging computer is used for inputting, modifying and debugging system programs and system parameters, and accesses the system through a reserved serial port in the early debugging stage;
the heating device comprises a junction box (7) and a temperature control module which are arranged on a coupler body of the coupler and are used for heating key parts of a buffer system of the coupler, collecting temperature parameters of the key parts of the system and transmitting the temperature parameters to the controller; the temperature control module comprises a coupling end face temperature control module (8), a pneumatic device temperature control module (9) and a buffer temperature control module (10); the junction box (7) is connected with the coupling end face temperature control module (8), the pneumatic device temperature control module (9) and the buffer temperature control module (10) through leads respectively, and supplies power to and controls the corresponding temperature control modules; the coupling end surface temperature control module (8) is fixedly arranged on the coupling end surface of the coupler body and is used for insulating the coupling end surface temperature control module (8); the pneumatic device temperature control module (9) is fixedly arranged on the outer sides of the unhooking cylinder and the pushing cylinder (15), and a heat insulation layer is arranged on the outer side of the pneumatic device temperature control module (9); the buffer temperature control module (10) is fixedly arranged at the end part of the coupler body buffer (20).
2. The variable frequency heating system for the coupler draft gear system according to claim 1, wherein: the indicating equipment in the feedback circuit is an indicating lamp.
3. The variable frequency heating system for the coupler draft gear system according to claim 1, wherein: the temperature control module comprises a coupling end face temperature control module (8), a pneumatic device temperature control module (9) and a buffer temperature control module (10).
4. The variable frequency heating system for the coupler draft gear system according to claim 1, wherein: the controller, the memory, the working circuit and the feedback circuit adopt embedded modules and are integrated into a circuit board, and the integrated circuit board is arranged in a junction box (7) of the coupler buffer device.
5. The variable frequency heating system for the coupler draft gear system according to claim 1, wherein: the coupling end face temperature control module (8) comprises a first electric heating pipe (11) and a first temperature sensor (12) which are symmetrically inserted into a coupling end face mounting cavity of the coupler body; and then the first electric heating pipe (11) is packaged and fixed in the mounting cavity through a screw (13) and a first protection plate (14).
6. The variable frequency heating system for the coupler draft gear system of claim 5, wherein: and insulating heat conduction materials are filled in the gap between the electric heating pipe (11) and the coupler body installation cavity.
7. The variable frequency heating system for the coupler draft gear system according to claim 1, wherein: pneumatic means temperature control module (9) are including parcel at the electrical heating circle (16) and heat preservation (17) in unhook cylinder and propelling movement cylinder (15) outside heat preservation (17) outside is through fixed plate (18) parcel, fixed plate (18) are installed fixedly through fastening components (19).
8. The variable frequency heating system for the coupler draft gear system according to claim 1, wherein: the buffer temperature control module (10) comprises a second electric heating pipe (11 ') and a second protection plate (14'), the second electric heating pipe (11 ') is inserted into a heating pipe installation cavity at the end part of the buffer (20), the second electric heating pipe (11') is limited and fixed at the opening of the heating pipe installation cavity of the buffer (20) through the second protection plate (14 '), and a second temperature sensor (12') is fixedly installed on the end surface of the buffer (20); and a gap between the second electric heating pipe (11') and the heating pipe installation cavity of the buffer (20) is filled with an insulating heat conduction material, and a cavity opening is sealed by silica gel at the opening of the heating pipe installation cavity.
9. A control method for a variable frequency heating system of a coupler buffer system is characterized by comprising the following steps:
under the normal working condition of the coupler buffer device, when a breaker in a working circuit is switched on, a power supply module supplies power to the whole variable-frequency heating system, a temperature control module feeds the output temperature of each key part position of the coupler buffer device back to a controller, and if the output temperature is higher than the set temperature in a memory, the controller switches off a digital switch, and the variable-frequency heating circuit does not work;
when the output temperature is
Less than the set temperature in the memory
When the frequency conversion heating circuit is started, the working circuit is connected with the digital switch, and the frequency conversion heating circuit is automatically started; the input alternating current is rectified and filtered into direct current through the rectifying module and the voltage stabilizing module, circuit parameters are transmitted to the controller, and the controller reads initial input
And the current is transmitted to an inversion module, the inversion module executes a program to convert direct current into alternating current with corresponding frequency, the temperature control module heats corresponding key parts of the coupler buffer device under the action of the current, and a temperature sensor measures response output temperature
Feeding back to the controller;
comparing responsive output temperatures by the controller
And set temperature
To find the response error
And obtaining the next step input through open-loop PID type learning law correction
Writing dynamic storage, transmitting the dynamic storage to the controller, and outputting response and feedback again by the controller;
by continuously carrying out iterative cycle and parameter correction, the convergence response error is close to the set temperature
And the purpose of system control is achieved.
10. A coupler draft gear system including a coupler draft gear and a variable frequency heating system as claimed in any one of claims 1 to 8.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2018109642558 | 2018-08-22 | ||
| CN201810964255 | 2018-08-22 |
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| Publication Number | Publication Date |
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| CN110248426A CN110248426A (en) | 2019-09-17 |
| CN110248426B true CN110248426B (en) | 2021-11-09 |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10144838A1 (en) * | 2001-09-12 | 2003-03-27 | Scharfenbergkupplung Gmbh & Co | Electrical heating for the coupling head of a middle buffer coupling |
| CH703319B1 (en) * | 2006-08-29 | 2011-12-30 | Schwab Verkehrstechnik Ag | Coupling head for rail vehicles. |
| CN105857620A (en) * | 2016-05-06 | 2016-08-17 | 武汉航空仪表有限责任公司 | Main paddle distributor for rotor wing anti-icing/deicing system |
| CN206532169U (en) * | 2017-02-20 | 2017-09-29 | 锐电科技有限公司 | The assisted heating device that a kind of anti-anemobiagraph freezes |
| CN109137639A (en) * | 2017-06-15 | 2019-01-04 | 比亚迪股份有限公司 | Deicing device for track girder and the track beam assembly with it |
| CN108316146A (en) * | 2018-03-06 | 2018-07-24 | 无锡法尔胜悦能动力有限公司 | A kind of bridge road cable and its heating control apparatus |
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Effective date of registration: 20220518 Address after: 266111 South Side of Xinye Road and West Side of Herong Road, Qingdao Hi-tech Industrial Development Zone, Shandong Province Patentee after: CRRC Brake System Co.,Ltd. Address before: 213000 No.19 Shunyuan Road, Xuejia Town, Xinbei District, Changzhou City, Jiangsu Province Patentee before: CRRC CHANGZHOU TECH-MARK INDUSTRIAL Co.,Ltd. Patentee before: CRRC Qishuyan Locomotive and rolling stock Technology Research Institute Co., Ltd |