CN111038472B - Valve group system, brake system, vehicle and control method - Google Patents
Valve group system, brake system, vehicle and control method Download PDFInfo
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- CN111038472B CN111038472B CN201911311587.7A CN201911311587A CN111038472B CN 111038472 B CN111038472 B CN 111038472B CN 201911311587 A CN201911311587 A CN 201911311587A CN 111038472 B CN111038472 B CN 111038472B
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- 238000000034 method Methods 0.000 title claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 197
- 238000010438 heat treatment Methods 0.000 claims abstract description 110
- 238000009825 accumulation Methods 0.000 claims description 22
- 238000001514 detection method Methods 0.000 claims description 16
- 238000004321 preservation Methods 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000005265 energy consumption Methods 0.000 abstract 1
- 238000007789 sealing Methods 0.000 description 6
- 238000007710 freezing Methods 0.000 description 4
- 230000008014 freezing Effects 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000036413 temperature sense Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
- B60T15/02—Application and release valves
- B60T15/36—Other control devices or valves characterised by definite functions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/002—Air treatment devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/002—Air treatment devices
- B60T17/004—Draining and drying devices
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The invention provides a valve group system, a braking system, a vehicle and a control method, wherein the valve group system comprises four loop protection valves, a drain valve and a heater, a shell of each loop protection valve is provided with an air inlet and four air outlets, and a temperature sensor and a water level sensor are arranged in the air inlet; the drain valve is detachably arranged on the shell, is communicated with the air inlet, can be opened and closed and is used for draining accumulated water in the air inlet; the heater is arranged on the shell and is used for heating the air inlet of the shell. The temperature in the air inlet can be timely detected through the temperature sensor, so that the temperature is too low, the heater is used for heating, water in the air inlet can be prevented from being frozen, the water level in the air inlet can be detected through the water level sensor, accumulated water is discharged when the water in the air inlet is more, the problem of ice blockage is further avoided, the reliability and the service life of a valve group system are improved, and energy consumption can be reduced.
Description
Technical Field
The invention relates to the technical field of valve group systems, in particular to a valve group system, a braking system, a vehicle and a control method.
Background
The air source pipeline of the air inlet of the four-loop protection valve is too long, and the installation position of the air inlet of the four-loop protection valve is lower, so that the condensation of water vapor in the exposed air source pipeline is accelerated, the water vapor is gathered to the air inlet of the four-loop protection valve, and in the running process of a vehicle, the four-loop protection valve is blocked or damaged due to the fact that the air inlet of the four-loop protection valve is blocked for a long time, ice blocking (freezing) is easy to occur in cold seasons or areas, and moreover, the four-loop protection valve is blocked or damaged after the vehicle stops running and is flameout, so that the ice blocking is easy to occur.
Disclosure of Invention
The invention provides a valve group system, a braking system, a vehicle and a control method, which are used for avoiding ice blockage of a four-loop protection valve.
To achieve the above object, according to one aspect of the present invention, there is provided a valve group system comprising: the four-loop protection valve comprises a shell, a temperature sensor and a water level sensor, wherein the shell is provided with an air inlet and four air outlets, the temperature sensor and the water level sensor are both arranged in the air inlet, the temperature sensor is used for detecting the temperature in the air inlet, and the water level sensor is used for detecting the water level of accumulated water in the air inlet; the drainage valve is detachably arranged on the shell and communicated with the air inlet, can be opened and closed and is used for draining accumulated water in the air inlet; and the heater is arranged on the shell and is used for heating the air inlet of the shell.
Further, the valve block system further comprises: and the controller is used for controlling the operation of the heater according to the detection result of the temperature sensor and controlling the operation of the drain valve according to the detection result of the water level sensor.
Further, the heater comprises a resistance heating wire and a heat preservation material, wherein the resistance heating wire is arranged on the shell, and the heat preservation material is coated on the resistance heating wire.
Further, the shell is provided with a threaded hole communicated with the air inlet, and the drain valve is detachably connected with the shell through the threaded hole.
According to another aspect of the present invention there is provided a brake system, which is a pneumatic brake system, comprising a valve group system, which is the valve group system described above.
According to another aspect of the present invention there is provided a vehicle comprising a brake system as described above.
According to another aspect of the present invention, there is provided a control method for controlling a valve group system including a four-circuit protection valve and a drain valve connected to an intake port of the four-circuit protection valve for draining accumulated water in the intake port, the control method comprising: detecting a temperature within the air inlet; detecting a water level in the air inlet; under the condition that the water accumulation in the air inlet is detected, and the temperature in the air inlet is lower than 0 ℃, the water accumulation in the air inlet is heated, and after the water accumulation is heated to a preset temperature range, the water accumulation is discharged through the drain valve.
Further, heating the accumulated water in the air inlet comprises a manual heating mode and an automatic heating mode, wherein the manual heating mode is to heat the accumulated water after manually setting heating parameters, the automatic heating mode is to heat the accumulated water according to preset heating parameters, and the control method further comprises: starting timing after detecting that water is accumulated in the air inlet and the temperature in the air inlet is lower than 0 ℃, selecting a manual heating mode to heat the water in a preset heating mode selection time, and automatically entering an automatic heating mode to heat the water if the manual heating mode is not selected in the heating mode selection time.
Further, heating the accumulated water to a preset temperature range includes: detecting the temperature of the accumulated water at each preset temperature detection time; if the detected temperature of the accumulated water is smaller than the preset temperature range, heating the accumulated water until the temperature of the accumulated water reaches the preset temperature range, and stopping heating; and if the detected temperature of the accumulated water is in the preset temperature range, not heating the accumulated water.
Further, draining the accumulated water through the drain valve includes an automatic drainage mode and a manual drainage mode, wherein the manual drainage mode is to drain the accumulated water in the air inlet after manually setting drainage parameters, the automatic drainage mode is to drain water in the air inlet according to preset drainage parameters, and the control method further includes: starting timing after water accumulation in the air inlet is detected, selecting a manual drainage mode in a preset drainage mode selection time, and automatically entering an automatic drainage mode if the manual drainage mode is not selected in the drainage mode selection time; after the drainage mode is selected, if the heating operation of the accumulated water is not finished, waiting for the accumulated water to be heated to the preset temperature range, and then draining according to the selected drainage mode; after the drainage mode is selected, if the heating operation of the accumulated water is completed, the water is directly drained according to the selected drainage mode.
Further, draining the accumulated water includes: detecting whether water is accumulated in the air inlet or not at each preset accumulated water detection time interval, and if the water is accumulated in the air inlet, opening the drain valve for preset time to drain water; or, the drain valve is opened once every preset drain time to drain water.
Further, the control method further includes: and under the condition that the water accumulation in the air inlet is detected and the temperature in the air inlet is higher than 0 ℃, discharging the water accumulation through the drain valve.
Further, the control method further includes: after the valve group system is started, functional self-detection is firstly carried out on each component in the valve group system, alarm feedback is carried out if the valve group system fails, and the temperature and the water level in the air inlet are detected if the valve group system does not fail.
Further, the control method further includes: before the valve block system is shut down, a detailed record of the last heating or draining operation is recorded.
By applying the technical scheme of the invention, the valve group system comprises a four-loop protection valve, a drain valve and a heater, wherein the four-loop protection valve comprises a shell, a temperature sensor and a water level sensor, the shell is provided with an air inlet and four air outlets, the temperature sensor and the water level sensor are both arranged in the air inlet, the temperature sensor is used for detecting the temperature in the air inlet, and the water level sensor is used for detecting the water level of accumulated water in the air inlet; the drain valve is detachably arranged on the shell, is communicated with the air inlet, can be opened and closed and is used for draining accumulated water in the air inlet; the heater is arranged on the shell and is used for heating the air inlet of the shell. The temperature in the air inlet can be timely detected through the temperature sensor, so that the temperature is too low, the heater is used for heating, water in the air inlet can be prevented from being frozen, the water level in the air inlet can be detected through the water level sensor, accumulated water is discharged when the water in the air inlet is more, the problem of ice blockage is further avoided, and the reliability and the service life of the valve group system are improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
FIG. 1 shows a schematic diagram of a valve block system provided by an embodiment of the present invention;
FIG. 2 shows an exploded view of the four-circuit protection valve of FIG. 1;
fig. 3 shows an exploded view of the drain valve of fig. 1;
fig. 4 is a schematic operation flow diagram of a control method according to an embodiment of the present invention.
Wherein the above figures include the following reference numerals:
10. a four-circuit protection valve; 11. a housing; 12. a temperature sensor; 13. a threaded hole; 20. a drain valve; 30. a heater.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in the drawings, an embodiment of the present invention provides a valve group system including: the four-circuit protection valve 10, the four-circuit protection valve 10 comprises a shell 11, a temperature sensor 12 and a water level sensor, wherein the shell 11 is provided with an air inlet and four air outlets, the temperature sensor 12 and the water level sensor are arranged in the air inlet, the temperature sensor 12 is used for detecting the temperature in the air inlet, and the water level sensor is used for detecting the water level of accumulated water in the air inlet; a drain valve 20 detachably provided on the housing 11, the drain valve 20 being communicated with the air inlet, the drain valve 20 being openably provided, the drain valve 20 being for draining accumulated water in the air inlet; a heater 30 is provided on the housing 11, and the heater 30 is used for heating the air inlet of the housing 11.
By applying the technical scheme of the invention, a valve group system is provided, the valve group system comprises a four-loop protection valve 10, a drain valve 20 and a heater 30, wherein the four-loop protection valve 10 comprises a shell 11, a temperature sensor 12 and a water level sensor, the shell 11 is provided with an air inlet and four air outlets, the temperature sensor 12 and the water level sensor are both arranged in the air inlet, the temperature sensor 12 is used for detecting the temperature in the air inlet, and the water level sensor is used for detecting the water level of accumulated water in the air inlet; the drain valve 20 is detachably arranged on the shell 11, the drain valve 20 is communicated with the air inlet, the drain valve 20 is arranged in an openable and closable manner, and the drain valve 20 is used for draining accumulated water in the air inlet; a heater 30 is provided on the housing 11, the heater 30 being for heating the air inlet of the housing 11. The temperature in the air inlet can be timely detected through the temperature sensor 12, so that the heater 30 is used for heating when the temperature is too low, water in the air inlet can be prevented from being frozen, the water level in the air inlet can be detected through the water level sensor, accumulated water is discharged when the water in the air inlet is relatively more, the problem of ice blockage is further avoided, and the reliability and the service life of the valve group system are improved.
In this embodiment, the valve group system further includes: the controller is electrically connected to the temperature sensor 12, the water level sensor, the drain valve 20 and the heater 30, and is used for controlling the operation of the heater 30 according to the detection result of the temperature sensor 12 and controlling the operation of the drain valve 20 according to the detection result of the water level sensor. Through the arrangement, the association and control between the components can be facilitated. In addition, the heating can be realized when heating is needed, and the water is discharged when water is needed, so that the problem of ice blockage is avoided, and the energy can be saved.
Specifically, the heater 30 includes a resistance heating wire provided on the housing 11, and a heat insulating material coated on the resistance heating wire. By adopting the arrangement, the manufacturing cost is low, and the heating and heat preservation effects are good.
In the present embodiment, the housing 11 has a screw hole 13 communicating with the air inlet, and the drain valve 20 is detachably connected to the housing 11 through the screw hole 13. The above arrangement can facilitate the assembly and disassembly of the drain valve 20 and the housing 11, and the connection is reliable and the operation is convenient.
Another embodiment of the present invention provides a brake system, which is a pneumatic brake system, and the brake system includes a valve group system, and the valve group system is the valve group system described above. By adopting the scheme, the temperature in the air inlet can be timely detected by the temperature sensor 12, so that the heater 30 is used for heating when the temperature is too low, thereby avoiding freezing of water in the air inlet, and the water level in the air inlet can be detected by the water level sensor, so that accumulated water is discharged when the water in the air inlet is more, the problem of ice blockage is further avoided, the reliability and the service life of the braking system are improved, and the safety is improved.
Another embodiment of the invention provides a vehicle comprising a brake system as described above. By adopting the scheme, the problem of high power consumption of the intelligent drain valve for constant-temperature heating is solved; the ice blocking phenomenon of the four-loop protection valve in the alpine region is effectively avoided; the intelligent heating device can intelligently remind a driver of the environmental temperature of the valve body, and whether heating is needed or not and prompt a heating strategy, and does not need to rely on a person temperature sense or an external thermometer to infer whether heating is needed or not.
Another embodiment of the present invention provides a control method for controlling a valve group system, such as the valve group system provided in the above embodiment. The valve group system comprises a four-circuit protection valve 10 and a drain valve 20, the drain valve 20 is connected with an air inlet of the four-circuit protection valve 10 for draining accumulated water in the air inlet, and the control method comprises the following steps: detecting a temperature within the air inlet; detecting the water level in the air inlet; under the condition that the accumulated water in the air inlet is detected and the temperature in the air inlet is lower than 0 ℃, the accumulated water in the air inlet is heated, and after the accumulated water is heated to a preset temperature range, the accumulated water is discharged through the drain valve 20. The temperature and the water level in the air inlet can be timely detected, when freezing occurs in the air inlet, ice can be melted in a heating mode, accumulated water is discharged through the drain valve 20, and therefore the problem of ice blockage is eliminated and avoided, and reliability is provided.
In this embodiment, the heating of the water accumulation in the air inlet includes a manual heating mode and an automatic heating mode, wherein the manual heating mode is to heat the water accumulation after manually setting heating parameters, and the automatic heating mode is to heat the water accumulation according to preset heating parameters, and the control method further includes: starting timing after detecting that water is accumulated in the air inlet and the temperature in the air inlet is lower than 0 ℃, selecting a manual heating mode to heat the water in a preset heating mode selection time, and automatically entering an automatic heating mode to heat the water if the manual heating mode is not selected in the heating mode selection time. Therefore, a manual heating mode or an automatic heating mode can be selected according to the needs, parameters such as heating temperature, heating time and the like can be set, and the operation is flexible.
Further, heating the accumulated water to a preset temperature range includes: detecting the temperature of accumulated water at each preset temperature detection time; if the detected temperature of the accumulated water is smaller than the preset temperature range, heating the accumulated water until the temperature of the accumulated water reaches the preset temperature range, and stopping heating; if the detected temperature of the accumulated water is in the preset temperature range, the accumulated water is not heated. By the arrangement, heating can be realized when heating is needed, and heating is not needed when heating is not needed, so that energy sources can be saved.
In this embodiment, draining the accumulated water through the drain valve 20 includes an automatic drain mode and a manual drain mode, wherein the manual drain mode is to drain the accumulated water in the air inlet after manually setting the drain parameter, and the automatic drain mode is to drain the water in the air inlet according to the preset drain parameter, and the control method further includes: starting timing after water accumulation in the air inlet is detected, selecting a manual drainage mode in preset drainage mode selection time, and automatically entering an automatic drainage mode if the manual drainage mode is not selected beyond the drainage mode selection time; after the drainage mode is selected, if the heating operation of the accumulated water is not finished, waiting for the accumulated water to be heated to a preset temperature range, and then draining according to the selected drainage mode; after the drainage mode is selected, if the drainage operation of the accumulated water is completed, drainage is directly carried out according to the selected drainage mode. Therefore, the manual drainage mode or the automatic drainage mode can be selected according to the requirements, parameters such as drainage time and the like can be set, and the operation is flexible. Moreover, by the arrangement, the water can be discharged when the water temperature is above the zero point, and the situation that the water cannot be discharged due to freezing is avoided.
In this embodiment, draining the accumulated water includes: detecting whether water is accumulated in the air inlet or not at each preset accumulated water detection time interval, and if the water is accumulated in the air inlet, opening the drain valve 20 for preset time to drain water; or, the drain valve 20 is opened once every preset drain time to drain. Through the arrangement, the accumulated water can be completely discharged, and the water discharging operation can be avoided under the condition of no accumulated water.
In this embodiment, the control method further includes: when it is detected that there is water in the air inlet and the temperature in the air inlet is higher than 0 ℃, the water is discharged through the drain valve 20. Thus, when water is accumulated in the air inlet and the temperature in the air inlet is higher than 0 ℃, the water can be directly discharged without heating.
In this embodiment, the control method further includes: after the valve group system is started, functional self-inspection is performed on all components in the valve group system, alarm feedback is performed if the valve group system fails, and the temperature and the water level in the air inlet are detected if the valve group system does not fail. Thus, the reliability of the valve group system is ensured, and users can find and process the valve group system in time when the valve group system fails.
In this embodiment, the control method further includes: before the valve block system is shut down, a detailed record of the last heating or draining operation is recorded. This facilitates statistics or processing and subsequent maintenance and optimization.
In order to facilitate understanding of the present solution, further description will be made below.
The four-loop protection valve consists of multiple parts, wherein a cross pan head screw member penetrates through the whole valve body and is screwed with the shell plate; the other cross pan head screw is used for fixedly mounting the four-loop upper shell and the four-loop lower shell together; the nonstandard screws are combined with the nonstandard positioning pads to isolate four upper spring cavities and lower spring cavities of the four-circuit protection valve; the four-loop upper shell is an outer structure shell of the upper half part of the four-loop protection valve; the adjusting screw is used for adjusting the air flow passing pressure of the four upper cavities of the four-loop protection valve; the spring upper seat, the spring and the spring lower seat form four overflow cavity control units of the four-loop protection valve; the diaphragm, the spring seat, the positioning seat and the spring form four-loop lower spring cavities; the shell plate, the valve seat and the sealing ring form overflow cavities of two air outlets of the four-loop protection valve; the double-wire female plug-in is used for connecting a control wiring harness of the intelligent drainage valve; the sealing bolt, the connecting wire and the plug body are the whole valve body electric control connecting wire harness and are directly integrated into a vehicle main CAN wire; the outside of the flexible temperature control heater is coated with a heat insulation material and is formed by using a resistance heating wire; the temperature sensor and the water level sensor are used for feeding back temperature and water level signals.
The drain valve consists of a plurality of parts, and the retainer ring is used for fixing the filter screen on the air inlet of the drain valve; the deformation spring is used for pre-sealing the valve and the valve seat; the valve seat is a valve seat with positioning and guiding functions; the valve is a rubber valve with a sealing function; the ejector rod is connected with the valve seat and the valve core and is used for transmitting reset force of the valve core and transmitting opening force of the valve seat; the deformation shell is an outer structure shell of the intelligent drain valve; the insulating paper is used for isolating internal current to prevent leakage accidents; the combined cushion framework and the rubber ring are used for sealing gaps among the deformation shell, the insulating paper and the coil; the O-shaped ring is used for sealing a gap between the bottom plate and the cover plate; the permanent magnet gives thrust for opening the valve; the electromagnet is used for pushing the magnetic field of the valve core; an intelligent drain valve bottom plate for fixing the components in the shell; the PA cover plate can play a role in protection.
The control method comprises two parts: the intelligent drainage system control logic needs to receive a heating stopping signal sent by the temperature feedback heating system control logic and mainly comprises the following contents:
1 System self-test
After the vehicle is started, the main power supply is turned on, the control logic is turned on, the functional self-checking is carried out on all parts of the system, the last operation record before shutdown is detected, if abnormal operation records or abnormal data appear before shutdown, the self-checking is carried out on all parts of the system, if the self-checking of the parts of the system is passed, the historical fault record is saved, the fault signal is not fed back to the instrument, and if the self-checking of the parts of the system is not passed, the current fault signal and the historical fault signal are fed back to the instrument;
if no fault code exists, the sensor information is continuously collected, the water level of the accumulated water in the valve body and the internal temperature of the air inlet are detected, and if the water level of the accumulated water is found to be too high or the temperature is lower than 0 ℃, signals of too high or too low temperature of the accumulated water of the instrument are fed back.
2 temperature feedback heating system control logic
After receiving a signal with the temperature lower than 0 ℃ by an instrument, the system enters a mode selection waiting state, if a heating mode is manually selected, a heating target value and a temperature detection interval are given according to the manually selected heating mode, if the temperature exceeds 60 seconds and no human intervention still occurs, the system automatically enters an energy-saving mode, and gives an operation signal with the target value of 10 ℃ and the temperature detection interval of 15S, the system defaults to 10 ℃ to stop heating in the mode, and then if the temperature is lower than 5 ℃, heating is started to 15 ℃ and then heating is stopped (cyclic heating between 5 ℃ and 15 ℃); the interval 15S performs a temperature self-test and the feedback meter displays the real-time temperature.
3 Intelligent drainage system control logic
After the accumulated water level is fed back by the instrument and is overhigh, the system enters a mode selection waiting state, the driver does not select manually more than 60S, namely, a drainage mode (normal mode) is automatically given, drainage is stopped after 1000ms after 500ms begins to drain after a brake pedal is pressed by default in the mode, and drainage is carried out once at intervals of 60 minutes.
On the one hand, the water accumulation and water level overhigh signal fed back by the instrument is directly fed back to the control logic, and if the control logic receives the heating stopping signal output by the temperature feedback heating system control logic, the valve body is opened for drainage action in 500ms, and the valve body is closed for stopping drainage in 1000 ms.
All the water draining operations need to be started after the heating stopping signal is received, and if the heating stopping signal is not received, the water draining operation needs to be continued until the signal is received.
4 shutdown of the system
The detailed record of the last heating or draining operation is recorded before the system is shut down each time.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (12)
1. A valve manifold system, comprising:
a four-circuit protection valve (10), wherein the four-circuit protection valve (10) comprises a shell (11), a temperature sensor (12) and a water level sensor, the shell (11) is provided with an air inlet and four air outlets, the temperature sensor (12) and the water level sensor are both arranged in the air inlet, the temperature sensor (12) is used for detecting the temperature in the air inlet, and the water level sensor is used for detecting the water level of accumulated water in the air inlet;
the drain valve (20) is detachably arranged on the shell (11), the drain valve (20) is communicated with the air inlet, the drain valve (20) can be arranged in an opening and closing mode, and the drain valve (20) is used for draining accumulated water in the air inlet;
a heater (30) provided on the housing (11), the heater (30) being configured to heat an air inlet of the housing (11);
the heater (30) comprises a resistance heating wire and a heat preservation material, wherein the resistance heating wire is arranged on the shell (11), and the heat preservation material is coated on the resistance heating wire;
the shell (11) is provided with a threaded hole (13) communicated with the air inlet, and the drain valve (20) is detachably connected with the shell (11) through the threaded hole (13).
2. The valve manifold system of claim 1, further comprising:
the temperature sensor (12), the water level sensor, the drain valve (20) and the heater (30) are all electrically connected with the controller, and the controller is used for controlling the operation of the heater (30) according to the detection result of the temperature sensor (12) and controlling the operation of the drain valve (20) according to the detection result of the water level sensor.
3. A brake system, characterized in that the brake system is a pneumatic brake system, the brake system comprising a valve group system, the valve group system being as claimed in any one of claims 1 to 2.
4. A vehicle comprising a brake system, the brake system being the brake system of claim 3.
5. A control method for controlling the valve group system according to any one of claims 1 to 2, characterized in that the control method comprises:
detecting a temperature within the air inlet;
detecting a water level in the air inlet;
and under the condition that the water accumulation in the air inlet is detected and the temperature in the air inlet is lower than 0 ℃, heating the water accumulation in the air inlet, and after heating the water accumulation to a preset temperature range, discharging the water accumulation through the drain valve (20).
6. The control method according to claim 5, wherein heating the water accumulation in the air inlet includes a manual heating mode and an automatic heating mode, wherein the manual heating mode is heating the water accumulation after manually setting heating parameters, and the automatic heating mode is heating the water accumulation according to preset heating parameters, and the control method further includes:
starting timing after detecting that water is accumulated in the air inlet and the temperature in the air inlet is lower than 0 ℃, selecting a manual heating mode in a preset heating mode selection time to heat the water, and automatically entering an automatic heating mode to heat the water if the manual heating mode is not selected in the heating mode selection time.
7. The control method of claim 5, wherein heating the accumulated water to a predetermined temperature range comprises:
detecting the temperature of the accumulated water at each preset temperature detection time;
if the detected temperature of the accumulated water is smaller than the preset temperature range, heating the accumulated water until the temperature of the accumulated water reaches the preset temperature range, and stopping heating;
and if the detected temperature of the accumulated water is in the preset temperature range, not heating the accumulated water.
8. The control method according to claim 5, wherein draining the accumulated water through the drain valve (20) includes an automatic drain mode and a manual drain mode, wherein the manual drain mode is draining the accumulated water in the air inlet after manually setting a drain parameter, and the automatic drain mode is draining the water in the air inlet according to a preset drain parameter, the control method further comprising:
starting timing after water accumulation in the air inlet is detected, selecting a manual drainage mode in preset drainage mode selection time, and automatically entering an automatic drainage mode if the manual drainage mode is not selected beyond the drainage mode selection time;
after the drainage mode is selected, if the heating operation of the accumulated water is not finished, waiting for the accumulated water to be heated to the preset temperature range, and then draining according to the selected drainage mode;
after the drainage mode is selected, if the heating operation of the accumulated water is completed, the water is directly drained according to the selected drainage mode.
9. The control method according to claim 5, characterized in that draining the accumulated water includes:
detecting whether water is accumulated in the air inlet or not at each preset accumulated water detection time interval, and if the water is accumulated in the air inlet, opening the drain valve (20) for preset time to drain water; or alternatively, the first and second heat exchangers may be,
the drain valve (20) is opened once every preset drain time to drain.
10. The control method according to claim 5, characterized in that the control method further comprises:
and when the water accumulation in the air inlet is detected and the temperature in the air inlet is higher than 0 ℃, discharging the water accumulation through the drain valve (20).
11. The control method according to claim 5, characterized in that the control method further comprises:
after the valve group system is started, functional self-detection is firstly carried out on each component in the valve group system, alarm feedback is carried out if the valve group system fails, and the temperature and the water level in the air inlet are detected if the valve group system does not fail.
12. The control method according to claim 5, characterized in that the control method further comprises:
before the valve block system is shut down, a detailed record of the last heating or draining operation is recorded.
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| CN112066069B (en) * | 2020-08-24 | 2022-04-19 | 安徽安凯汽车股份有限公司 | Intelligent blowdown system of air cylinder and control method thereof |
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