CN111335125A - Frying control system, pavement maintenance truck and anti-backfire control method of burner - Google Patents
Frying control system, pavement maintenance truck and anti-backfire control method of burner Download PDFInfo
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- CN111335125A CN111335125A CN202010207291.7A CN202010207291A CN111335125A CN 111335125 A CN111335125 A CN 111335125A CN 202010207291 A CN202010207291 A CN 202010207291A CN 111335125 A CN111335125 A CN 111335125A
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- control unit
- burner
- combustor
- upper control
- roller
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000012423 maintenance Methods 0.000 title claims abstract description 18
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 42
- 239000003546 flue gas Substances 0.000 claims abstract description 42
- 239000000463 material Substances 0.000 claims abstract description 42
- 238000007599 discharging Methods 0.000 claims abstract description 12
- 238000010276 construction Methods 0.000 claims description 16
- 238000010438 heat treatment Methods 0.000 claims description 16
- 230000008569 process Effects 0.000 claims description 16
- 238000007664 blowing Methods 0.000 claims description 9
- 238000010926 purge Methods 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 4
- 239000004035 construction material Substances 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 230000002265 prevention Effects 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 description 12
- 230000004048 modification Effects 0.000 description 8
- 238000012986 modification Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 239000010426 asphalt Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 238000005496 tempering Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/03—Arrangements for curing paving; Devices for applying curing means; Devices for laying prefabricated underlay, e.g. sheets, membranes; Protecting paving under construction or while curing, e.g. use of tents
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
- E01C23/065—Recycling in place or on the road, i.e. hot or cold reprocessing of paving in situ or on the traffic surface, with or without adding virgin material or lifting of salvaged material; Repairs or resurfacing involving at least partial reprocessing of the existing paving
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Control Of Combustion (AREA)
Abstract
The invention discloses a stir-frying control system, a pavement maintenance vehicle and a burner backfire prevention control method, which comprise an upper control unit, wherein the upper control unit is respectively connected with a roller rotating motor, a circulating fan and a burner; the upper control unit controls the forward rotation material frying and the reverse rotation material discharging of the rotary motor of the roller; the upper control unit measures the temperature of the flue gas at the rear end of the roller through a flue gas temperature sensor, controls the start and stop of the circulating fan according to the temperature of the flue gas at the rear end of the roller, and judges whether the circulating fan works or not through a wind pressure sensor; the upper control unit controls the combustor to be in the extending and retracting states through the extending electromagnetic valve and the retracting electromagnetic valve, and judges whether the combustor is in the retracting state through the limit switch; the upper control unit controls the starting and stopping of the combustor fan; the upper control unit measures the real-time material temperature through a material temperature sensor. The invention has strong practicability, high intelligent degree and outstanding use effect.
Description
Technical Field
The invention relates to a stir-frying control system, a pavement maintenance truck and a burner anti-backfire control method, and belongs to the field of pavement maintenance.
Background
The comprehensive maintenance vehicle for asphalt pavement is a maintenance machine for comprehensive maintenance of asphalt pavement, and can meet various construction technological requirements of quick heating of cold finished mixture, regeneration and heating of milled and milled old materials, on-site stir-frying of asphalt mixture, on-site regeneration of pavement and the like. Wherein, drum-type road surface maintenance car is a common bituminous paving combined maintenance car.
The operation panel of drum-type road surface maintenance car in the existing market is equipped with cylinder rotary switch, circulating fan switch, combustor switch usually, and the operation is comparatively complicated. When the materials are fried, an operator needs to turn on the rotary switch of the roller first and then turn on the switch of the circulating fan; in order to prevent the deformation of the internal structural part of the roller due to overhigh local temperature in the roller caused by the combustion of the combustor when the circulating fan does not work, an operator needs to confirm the normal work of the circulating fan firstly and then can turn on a combustor switch; however, the noise is high in the heating process, and the circulating fan is far away from the sight of an operator, so that the operator can hardly determine whether the circulating fan works normally. In addition, if the switch of the circulating fan is turned off when the temperature of the flue gas at the rear end of the roller is too high, the circulating fan stops working, and the internal structural part of the roller is deformed due to the fact that the local temperature in the roller is too high.
The combustor of heating bituminous mixture can embed the fan, combustor fan promptly for when preventing the combustor burning, the inside tempering phenomenon that appears of hot flue gas return combustor. Generally, the fan is controlled by a burner, the fan works when the burner burns, and the fan does not work when the burner stops burning. However, if the switch of the burner is turned off when the temperature of the flue gas at the rear end of the roller is too high, the fan does not work because the burner stops burning, and the possibility that hot flue gas returns to the inside of the burner can also occur, so that the photoresistor, the high-voltage ignition wire and the program controller in the burner are burnt out, the reliability of the product is reduced, and the brand image is influenced.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a stir-frying control system, a pavement maintenance truck and a burner backfire prevention control method, which have the advantages of strong practicability, high intelligent degree and outstanding use effect.
In order to achieve the purpose, the frying control system comprises an upper control unit, wherein the upper control unit is respectively connected with a roller rotating motor, a circulating fan and a combustor;
the upper loading control unit controls the forward rotation material frying and the reverse rotation material discharging of the rotary motor of the roller;
the upper control unit measures the temperature of the flue gas at the rear end of the roller through a flue gas temperature sensor, controls the start and stop of the circulating fan according to the temperature of the flue gas at the rear end of the roller, and judges whether the circulating fan works or not through a wind pressure sensor;
the upper control unit controls the combustor to be in an extending state and a retracting state through an extending electromagnetic valve and a retracting electromagnetic valve, and judges whether the combustor is in the retracting state through a limit switch;
the upper control unit controls the starting and stopping of the combustor fan;
and the upper control unit measures the real-time material temperature through the material temperature sensor.
As an improvement, the flue gas temperature sensor adopts a thermal resistor or a thermocouple; the material temperature sensor adopts a wireless temperature sensor or an infrared temperature sensor.
As an improvement, the upper-mounted control unit controls the burner to be in a retraction state during heating and chassis running through a retraction solenoid valve.
As an improvement, the upper-mounted control unit controls the combustor to be in an extended state during post-purging through an extended solenoid valve.
As an improvement, when the back blowing is carried out, if the temperature of the flue gas at the rear end of the roller is measured by the flue gas temperature sensor to be overhigh, the upper control unit controls the circulating fan and the combustor fan to be started.
As an improvement, the device also comprises a chassis control unit connected with the upper control unit;
the upper control unit reads a chassis speed signal and identifies that the chassis is in a running state or a parking state.
As an improvement, the upper control unit is a control cabinet assembly and comprises an installation switch, a display, a controller, a relay and a contactor.
In addition, the invention also provides a road maintenance vehicle, which is a drum-type road maintenance vehicle and is provided with the stir-frying control system.
Finally, the invention also provides a burner anti-backfire control method based on the stir-frying control system, which specifically comprises the following steps:
step S1, adding materials into the roller;
step S2, sending a material frying command to the upper loading control unit;
step S3, the circulating fan works, and the rotary motor of the roller rotates forwards;
step S4, if the upper control unit collects the wind pressure signal, the step S5 is entered, if the upper control unit can not collect the wind pressure signal, the step S3 is returned;
step S5, if the upper control unit collects the combustor retraction signal, the step S7 is executed, and if the upper control unit does not collect the combustor retraction signal, the step S6 is executed;
s6, controlling the burner to be in a retraction state by the upper control unit, and entering S7 when the upper control unit acquires a burner retraction signal;
step S7, the loading control unit judges whether the burner meets the heating condition, if yes, the process goes to step S8; if not, the burner stops burning, and the process goes to step S15;
step S8, heating the construction material;
s9, judging whether the material temperature reaches the construction required temperature through the upper control unit, if so, entering S10; if not, returning to the step S8;
step S10, sending a discharging command to the upper loading control unit;
step S11, discharging materials by the reverse rotation of the roller rotating motor;
step S12, if the construction is not finished, returning to step S1; if the construction is finished, the process goes to step S13;
step S13, sending a stop command to the upper installation control unit;
step S14, the loading control unit judges whether the temperature of the flue gas at the rear end of the roller is larger than or equal to the required temperature, if so, the burner stops burning, and the process goes to step S15 and step S17; if not, the combustor stops combusting, the circulating fan and the combustor fan stop working, and the construction is finished;
s15, entering a post-blowing link, enabling a circulating fan and a burner fan to work, enabling the temperature of the flue gas at the rear end of the roller collected by the upper control unit to be lower than the required temperature, and entering S16; if not, continuing the post-blowing link;
step S16, the upper control unit sends a combustor retraction command, the upper control unit receives a combustor retraction signal, the circulating fan and the combustor fan stop working, and construction is finished;
step S17, if the upper control unit receives the chassis speed signal, the operator is prompted to stop; if the upper-mounted control unit does not receive the chassis speed signal, the step S18 is carried out;
step S18, the upper control unit sends a burner extending command, and the burner executes extending action; after 5 seconds, the upper control unit stops sending the burner extending command, and the burner stops operating.
Compared with the prior art, the invention has the beneficial effects that:
1) the invention has simple operation, and the operator can realize the functions of one-key material frying and one-key material discharging only by sending material frying signals or material discharging signals to the upper control unit.
2) The invention judges whether the circulating fan works or not through the wind pressure sensor, if the circulating fan does not work, the burner does not allow combustion, and solves the problem that the internal structural part of the roller is deformed due to overhigh local temperature in the roller because the burner burns when the circulating fan does not work.
3) The limit switch is used for judging whether the burner is in the retraction state, if the burner is not in the retraction state, the burner is not allowed to burn, and safety accidents caused by the burning of the burner when the burner is in the extension state are avoided.
4) The anti-backfire control method is mainly characterized in that a rear blowing function is added, the deformation of internal structural members of the roller caused by overhigh local temperature in the roller is prevented, and the burnout of a photoresistor, a high-voltage ignition wire and a program controller in the burner caused by the backfire phenomenon when hot smoke returns to the inside of the burner is prevented.
5) The automatic retraction function of the combustor in the chassis running process solves the problem that the combustor fixing mechanism is broken due to bumping of the vehicle.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of a combustor fan control circuit prior to modification;
FIG. 3 is a first diagram of a modified combustor fan control circuit;
FIG. 4 is a second diagram of a modified combustor fan control circuit;
FIG. 5 is a flow chart of a method for controlling flashback in a combustor according to the present invention;
in the figure: 1. flue gas temperature sensor, 2, material temperature sensor, 3, wind pressure sensor, 4, limit switch, 5, upper control unit, 6, chassis control unit, 7, cylinder rotating electrical machines, 8, circulating fan, 9, stretch out solenoid valve, 10, retract solenoid valve, 11, combustor, 12, combustor fan.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the invention and not to limit the scope of the invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the terms used herein in the specification of the present invention are for the purpose of describing particular embodiments only and are not intended to limit the present invention.
As shown in fig. 1, a stir-frying control system for a drum-type pavement maintenance vehicle comprises a flue gas temperature sensor 1, a drum rotating motor 7, a material temperature sensor 2, a circulating fan 8, a wind pressure sensor 3, an extension electromagnetic valve 9, a retraction electromagnetic valve 10, a limit switch 4, a burner 11, a burner fan 12, an upper loading control unit 5 and a chassis control unit 6;
the flue gas temperature sensor 1 is electrically connected with the upper control unit 5 and is used for measuring the temperature of the flue gas at the rear end of the roller, and the flue gas temperature sensor 1 can be a thermal resistor or a thermocouple capable of measuring the temperature above 600 ℃;
the material temperature sensor 2 is electrically connected with the upper control unit 5 and used for measuring the real-time material temperature, and the material temperature sensor 2 can be a wireless temperature sensor or an infrared temperature sensor.
The wind pressure sensor 3 is electrically connected with the upper control unit 5, if the upper control unit 5 collects a wind pressure sensor signal, the circulating fan 8 works, and the combustor 11 can work; otherwise, the burner 11 may not be operated;
the limit switch 4 is electrically connected with the upper control unit 5 and is used for judging whether the combustor 11 is in a retraction state or not, and if the upper control unit 5 acquires a limit switch signal, the combustor 11 is in the retraction state, and the combustor 11 can work; otherwise, the burner 11 may not be operated.
The upper control unit 11 is a control cabinet assembly for installing electrical components such as a switch, a display, a controller, a relay, a contactor and the like, and the present invention is not described in detail.
The upper loading control unit 5 is electrically connected with the roller rotating motor 7 and can control the forward rotation and the reverse rotation of the roller rotating motor 7, the forward rotation of the roller rotating motor 7 is used for frying materials, and the reverse rotation of the roller rotating motor 7 is used for discharging materials.
In order to prevent the deformation of the internal structural part of the roller caused by overhigh local temperature in the roller, the upper control unit 5 collects the temperature of the flue gas at the rear end of the roller in real time, and if the actual temperature of the flue gas at the rear end of the roller is more than or equal to a set temperature value a, the circulating fan 8 can be automatically started during heating and after blowing. The set temperature value a is stored in the controller, and is generally default to 60 ℃, and can be modified through the display.
The post-purge refers to: when the temperature of the flue gas at the rear end of the roller is too high, the circulating fan and the combustor fan can be forcibly started.
To prevent the flame from being directly exposed to the air during heating to cause a safety accident, the burner 11 must be in a retracted state. As a modification of the embodiment, the upper control unit 5 is electrically connected with a retraction solenoid valve 10 of the burner, and ensures that the burner 11 is in a retraction state during the heating process.
In order to prevent the burner fixing mechanism from being broken due to the bumping of the vehicle during the running of the vehicle, the heat burner 11 must be in a retracted state. As a modification of the embodiment, the upper-mounted control unit 5 is electrically connected with a retraction electromagnetic valve 10 of the burner, so as to ensure that the burner is in a retraction state during chassis running.
As a modification of the embodiment, the upper control unit 5 is electrically connected with the extension solenoid valve 9, so that the burner 11 is in an extension state during the post-purging, and the fire tube of the burner 11 is directly exposed to the air for forced cooling.
As an improvement of the embodiment, the upper control unit 5 is electrically connected with the combustor 11, the upper control unit 5 collects the temperature of the flue gas at the rear end of the roller and the temperature of the material in real time, and if the actual temperature of the flue gas at the rear end of the roller is larger than or equal to a set temperature value b or the temperature of the material is larger than or equal to a set temperature value c, the combustor 11 stops burning. If the actual temperature of the flue gas at the rear end of the roller is less than the set temperature value b-the dead zone temperature value, and the material temperature is less than the set temperature value c; or the material temperature is less than the set temperature value c-the dead zone temperature value, and the actual temperature of the flue gas at the rear end of the roller is less than the set temperature value b, and the combustor 11 restarts to combust. The set temperature value b, the set temperature value c, and the dead zone temperature value are stored in the controller, and may be modified by the display, wherein the default set temperature value b is 300 ℃, the set temperature value c is 170 ℃, and the dead zone temperature value is 50 ℃.
As a modification of the embodiment, the upper control unit 5 may communicate with the chassis control unit 6, read a chassis speed signal, and identify whether the chassis is in a driving state or a parking state.
As an improvement of the embodiment, the burner fan 12 in the invention is not controlled by the burner 11, but the on-off control unit 5 directly controls the start and stop of the burner fan 12, so as to ensure that the burner fan 12 is automatically started during the post-purging. The modification of the present embodiment will be further described with reference to fig. 2 to 4.
Fig. 2 is a circuit diagram of a control circuit of the burner fan 12 before the improvement of the embodiment of the present invention. When the burner 11 burns, the burner 11 controls the thermal relay RT to be closed, so that the burner fan 12 obtains the voltage of 380V of alternating current, and the burner fan 12 starts to work. When the combustor 11 stops burning, the combustor 11 controls the thermal relay RT to be switched off, the combustor fan 12 loses the voltage of 380V of alternating current, and the combustor fan 12 stops working. According to the above, if the actual temperature of the flue gas at the rear end of the drum is greater than or equal to the set temperature value b, or the material temperature is greater than or equal to the set temperature value c, the burner 11 will stop burning. According to the control circuit diagram of the burner fan 12 before the modification of the embodiment of the present invention, the burner fan 12 is also stopped. However, at this time, the hot air pressure inside the roller is too high, and hot flue gas can return to the inside of the burner due to the non-operation of the burner fan 12, so that a backfire phenomenon occurs, and the photoresistor, the high-voltage ignition wire and the program controller inside the burner are burnt out.
Fig. 3 and 4 show a control circuit diagram of the burner fan 12 after the improvement of the embodiment of the present invention. When the burner 11 burns, the upper control unit 5 controls the relay K1 to be attracted, and after the relay K1 is attracted, the thermal relay RT is attracted, so that the burner fan 12 obtains the voltage of 380V alternating current, and the burner fan 12 starts to work. When the combustor 11 stops burning, if the upper control unit 5 collects that the actual temperature of the flue gas at the rear end of the roller is larger than or equal to the set temperature value a, the K1 relay keeps the attraction state, and the combustor fan 12 continues working. Until the upper control unit 5 collects that the actual temperature of the flue gas at the rear end of the roller is less than the set temperature value a, the K1 relay is disconnected, the thermal relay RT is disconnected, the combustor fan 12 loses the voltage of 380V of alternating current, and the combustor fan 12 stops working. According to the improvement of the embodiment of the invention, even if the pressure of the hot air in the roller is overhigh, the fan 12 of the combustor works all the time, so that the problem that the hot flue gas returns to the interior of the combustor and the tempering phenomenon occurs is solved.
As shown in fig. 5, a method for controlling the anti-backfire of a burner based on the stir-frying control system specifically comprises the following steps:
step S1, adding construction materials to be heated into the roller by an operator;
step S2, the operator sends a material frying command to the loading control unit 5;
step S3, the circulating fan 8 works, and the roller rotating motor 7 rotates forwards;
step S4, the upper control unit 5 collects a wind pressure signal and enters step S5; if the wind pressure signal cannot be acquired by the upper control unit 5, the step returns to step S3;
step S5, the upper control unit 5 collects a combustor retraction signal and enters step S7; the upper control unit 5 does not acquire the burner retraction signal and proceeds to step S6;
step S6, the upper control unit 5 sends a combustor retraction command, the retraction solenoid valve 10 of the combustor is powered on, the combustor executes retraction action until the upper control unit 5 collects a combustor retraction signal, the upper control unit 5 stops sending the combustor retraction command, the retraction solenoid valve 10 is not powered on, the combustor 11 stops acting, and the process goes to step S7;
step S7, the loading control unit 5 determines whether the burner 11 satisfies the heating condition, if so, the process goes to step S8; otherwise, the burner 11 stops burning, and the process proceeds to step S15; the heating condition of the combustor is a temperature hysteresis control method;
step S8, heating the construction material;
s9, the loading control unit 5 judges whether the material temperature reaches the temperature required by construction, if so, the process goes to S10; if not, returning to step S8;
step S10, the operator stops sending the discharging command to the upper control unit 5;
step S11, rotating the drum rotating motor 7 reversely to start discharging;
step S12, if the construction is not finished, returning to step S1; if the construction is finished, the process goes to step S13;
step S13, the operator sends a stop command to the upper mount control unit 5;
step S14, the loading control unit 5 judges whether the temperature of the flue gas at the rear end of the roller is larger than or equal to the required temperature, if so, the burner 11 stops burning, and the process goes to step S15 and step S17; if not, the combustor 11 stops combusting, the circulating fan 8 and the combustor fan 12 stop working, and the construction is finished;
step S15, entering a post-blowing link, working the circulating fan 8 and the burner fan 12 until the temperature of the flue gas at the rear end of the roller collected by the upper control unit 5 is less than the required temperature, and entering step S16; otherwise, continuing the post-blowing link.
Step S16, the upper control unit 5 sends a combustor retraction command, the retraction electromagnetic valve 10 of the combustor is powered on, the combustor starts a retraction process until the upper control unit 5 receives a combustor retraction signal, the circulating fan 8 and the combustor fan 12 stop working, and construction is finished;
step S17, if the upper control unit 5 receives the chassis speed signal, the operator is prompted to stop; if the upper control unit 5 does not receive the chassis speed signal, the process goes to step S18;
step S18, the upper control unit 5 sends a burner extending command, an extending electromagnetic valve 9 of the burner is electrified, and the burner executes extending action; after 5 seconds, the upper control unit 5 stops sending the burner extension command, the extension solenoid valve 9 of the burner is not electrified, and the burner stops operating.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents or improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. A material frying control system is characterized by comprising an upper loading control unit (5), wherein the upper loading control unit (5) is respectively connected with a roller rotating motor (7), a circulating fan (8) and a combustor (11);
the upper loading control unit (5) controls the forward rotation material frying and the reverse rotation material discharging of the rotary drum motor (7);
the upper control unit (5) measures the temperature of the flue gas at the rear end of the roller through the flue gas temperature sensor (1), controls the start and stop of the circulating fan (8) according to the temperature of the flue gas at the rear end of the roller, and judges whether the circulating fan (8) works or not through the wind pressure sensor (3);
the upper control unit (5) controls the burner to be in an extending state and a retracting state through an extending electromagnetic valve (9) and a retracting electromagnetic valve (10), and the upper control unit (5) judges whether the burner (11) is in the retracting state through a limit switch (4);
the upper control unit (5) controls the starting and stopping of the combustor fan (12);
the upper loading control unit (5) measures the real-time material temperature through the material temperature sensor (2).
2. The stir-fry control system according to claim 1 characterized in that the flue gas temperature sensor (1) is a thermal resistor or a thermocouple; the material temperature sensor (2) adopts a wireless temperature sensor or an infrared temperature sensor.
3. The stir-fry control system according to claim 1 characterized in that the upper control unit (5) controls the burners (11) to be in a retracted state during heating and during chassis travel by means of a retraction solenoid valve (10).
4. The stir-fry control system according to claim 1 characterized in that the upper control unit (5) controls the burner (11) to be in an extended state at the time of back purge by means of an extension solenoid valve (9).
5. The stir-frying control system according to claim 4, characterized in that when in the back purging, if the flue gas temperature sensor (1) measures that the temperature of the flue gas at the rear end of the roller is too high, the upper control unit (5) controls the circulating fan (8) and the burner fan (12) to be opened.
6. The frying control system as claimed in claim 1, further comprising a chassis control unit (6) connected to the upper loading control unit (5);
the upper-mounted control unit (5) reads a chassis speed signal and identifies that the chassis is in a running state or a parking state.
7. The frying control system as claimed in claim 1, wherein the upper control unit (5) is a control cabinet assembly including a mounting switch, a display, a controller, a relay, and a contactor.
8. A road maintenance vehicle, characterized in that the road maintenance vehicle is a drum-type road maintenance vehicle, on which the stir-fry control system of any one of claims 1-7 is mounted.
9. A method for controlling the anti-backfire of a burner, which is based on the frying control system of any one of claims 1 to 7, and comprises the following steps:
step S1, adding materials into the roller;
step S2, sending a material frying command to the upper loading control unit (5);
step S3, the circulating fan (8) works, and the roller rotating motor (7) rotates forwards;
step S4, if the upper control unit (5) collects a wind pressure signal, the step S5 is entered, and if the upper control unit (5) can not collect the wind pressure signal, the step S3 is returned;
step S5, if the upper control unit (5) collects the combustor retraction signal, the step S7 is executed, and if the upper control unit (5) cannot collect the combustor retraction signal, the step S6 is executed;
s6, the upper control unit (5) controls the burner (11) to be in a retraction state, and when the upper control unit acquires a burner retraction signal, the step S7 is carried out;
step S7, the loading control unit (5) judges whether the burner (11) meets the heating condition, if yes, the process goes to step S8; if not, the burner (11) stops burning, and the process goes to step S15;
step S8, heating the construction material;
s9, judging whether the material temperature reaches the construction required temperature through the upper control unit (5), if so, entering S10; if not, returning to the step S8;
step S10, sending a discharging command to the upper loading control unit (5);
step S11, reversely rotating the roller rotating motor (7) for discharging;
step S12, if the construction is not finished, returning to step S1; if the construction is finished, the process goes to step S13;
step S13, sending a stop command to the upper installation control unit (5);
step S14, the loading control unit (5) judges whether the temperature of the flue gas at the rear end of the roller is larger than or equal to the required temperature, if so, the burner (11) stops burning, and the step S15 and the step S17 are carried out; if not, the combustor (11) stops combusting, the circulating fan (8) and the combustor fan (12) stop working, and the construction is finished;
s15, entering a post-blowing link, working the circulating fan (8) and the burner fan (12), and entering a step S16 when the temperature of the flue gas at the rear end of the roller collected by the upper control unit (5) is less than the required temperature; if not, continuing the post-blowing link;
s16, the upper control unit (5) sends a combustor (11) retraction command, the upper control unit (5) receives a combustor retraction signal, the circulating fan (8) and the combustor fan (12) stop working, and construction is finished;
step S17, if the upper control unit (5) receives a chassis speed signal, prompting an operator to stop; if the upper-mounted control unit does not receive the chassis speed signal, the step S18 is carried out;
step S18, the upper-mounted control unit (5) sends a burner extending command, and the burner executes extending action; after 5 seconds, the upper control unit (5) stops sending the burner extension command, and the burner (11) stops operating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010207291.7A CN111335125A (en) | 2020-03-23 | 2020-03-23 | Frying control system, pavement maintenance truck and anti-backfire control method of burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010207291.7A CN111335125A (en) | 2020-03-23 | 2020-03-23 | Frying control system, pavement maintenance truck and anti-backfire control method of burner |
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| CN111335125A true CN111335125A (en) | 2020-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010207291.7A Pending CN111335125A (en) | 2020-03-23 | 2020-03-23 | Frying control system, pavement maintenance truck and anti-backfire control method of burner |
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| CN (1) | CN111335125A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2349808A1 (en) * | 1976-04-28 | 1977-11-25 | Miller Russell | Road surface heater mounted ahead of vehicle - has air inlet, fan and burner mounted on height adjustable frame |
| CN202324637U (en) * | 2011-11-18 | 2012-07-11 | 中集车辆（集团）有限公司 | Concrete pump truck as well as gear detection and control device thereof |
| CN105951570A (en) * | 2016-06-20 | 2016-09-21 | 徐州徐工筑路机械有限公司 | Automatic wireless-temperature-measuring control device and method for rotary-drum pavement maintenance vehicle |
| CN109539554A (en) * | 2018-11-26 | 2019-03-29 | 徐州徐工养护机械有限公司 | A kind of burner fireproof tempering device and its direct combustion hotblast stove |
| CN211848806U (en) * | 2020-03-23 | 2020-11-03 | 徐州徐工养护机械有限公司 | Fry material control system and road surface maintenance car thereof |
-
2020
- 2020-03-23 CN CN202010207291.7A patent/CN111335125A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2349808A1 (en) * | 1976-04-28 | 1977-11-25 | Miller Russell | Road surface heater mounted ahead of vehicle - has air inlet, fan and burner mounted on height adjustable frame |
| CN202324637U (en) * | 2011-11-18 | 2012-07-11 | 中集车辆（集团）有限公司 | Concrete pump truck as well as gear detection and control device thereof |
| CN105951570A (en) * | 2016-06-20 | 2016-09-21 | 徐州徐工筑路机械有限公司 | Automatic wireless-temperature-measuring control device and method for rotary-drum pavement maintenance vehicle |
| CN109539554A (en) * | 2018-11-26 | 2019-03-29 | 徐州徐工养护机械有限公司 | A kind of burner fireproof tempering device and its direct combustion hotblast stove |
| CN211848806U (en) * | 2020-03-23 | 2020-11-03 | 徐州徐工养护机械有限公司 | Fry material control system and road surface maintenance car thereof |
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