CN104404872A - Device and method for controlling anti-icing system of heat distribution pipeline of highway bridge - Google Patents
Device and method for controlling anti-icing system of heat distribution pipeline of highway bridge Download PDFInfo
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- CN104404872A CN104404872A CN201410764308.3A CN201410764308A CN104404872A CN 104404872 A CN104404872 A CN 104404872A CN 201410764308 A CN201410764308 A CN 201410764308A CN 104404872 A CN104404872 A CN 104404872A
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- 238000000034 method Methods 0.000 title claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 84
- 238000010438 heat treatment Methods 0.000 claims abstract description 56
- 230000005855 radiation Effects 0.000 claims abstract description 35
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 238000009790 rate-determining step (RDS) Methods 0.000 claims description 23
- 230000000630 rising effect Effects 0.000 claims description 19
- 230000007423 decrease Effects 0.000 claims description 7
- 230000001174 ascending effect Effects 0.000 claims description 6
- 230000008676 import Effects 0.000 claims description 4
- 230000033228 biological regulation Effects 0.000 claims description 2
- 238000013480 data collection Methods 0.000 claims description 2
- 238000012545 processing Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 3
- 239000002344 surface layer Substances 0.000 abstract description 2
- 230000036760 body temperature Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 206010039203 Road traffic accident Diseases 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
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
- E01C11/00—Details of pavings
- E01C11/24—Methods or arrangements for preventing slipperiness or protecting against influences of the weather
- E01C11/26—Permanently installed heating or blowing devices ; Mounting thereof
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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
- E01C11/00—Details of pavings
- E01C11/24—Methods or arrangements for preventing slipperiness or protecting against influences of the weather
- E01C11/26—Permanently installed heating or blowing devices ; Mounting thereof
- E01C11/265—Embedded electrical heating elements ; Mounting thereof
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Abstract
The invention discloses a device and a method for controlling an anti-icing system of a heat distribution pipeline of a highway bridge. The control device disclosed by the invention comprises variable-frequency water pumps mounted on water heating boilers and master connecting pipelines laid among heat distribution pipelines below a bridge surface layer, and also comprises a bridge surface temperature sensor, a bridge body temperature sensor, a sky radiation temperature sensor, an atmosphere temperature and humidity sensor, an air speed sensor, a heat distribution pipeline master pipe flow meter, a supplied liquid temperature sensor and a returned liquid temperature sensor, wherein all the sensors are connected with a controller; the controller is connected with all water heating boilers and water pump frequency converters. The control method disclosed by the invention mainly comprises a start stage control step, an ant-icing operation stage control step and a system stop control step. The method and the device disclosed by the invention saves energy, reduces consumption, has a good anti-icing effect, can operate automatically, can be used for increasing or reducing the frequency of water pumps and can control shutdown of the water heating boilers and the system.
Description
Technical field
The invention belongs to traffic safety and emergency guarantee technical field, be specifically related to a kind of highway bridge heat distribution pipeline anti-icing system control device and control method.
Background technology
Every winter, China's most area there will be freezing, sleety weather, the regional areas such as the bridge on speedway, tunnel face due to its environment special, icing phenomenon can be more serious, and the automobile now travelled on this kind of road surface easily causes serious traffic accidents because of wheel-slip.Traditional deicing method mainly comprises mechanical deicing's method, traditional Snow Agent deicing method and electric cable heating deicing method and the anti-icing method of heat distribution pipeline.
Although mechanical deicing's method has, effect is high, the advantage of mobility strong, but machine cost is high, because needs manual operation is under bad weather condition, there is larger potential safety hazard, need closed highway to affect traffic during work, road pavement have huge damage and deicing not in time.The deicing of tradition Snow Agent can accelerate road surface breakage, reduces the application life on road surface.
Electric cable heating deicing method is that the one in recent years occurred overlays electric heater unit between surface course and basic unit, reaches the object of electric heater unit heating and realize deicing by adjustment operating voltage or electric current.This kind of method existence installation and later maintenance inconvenience, operating power consumption cross the shortcomings such as high.
The anti-icing method of heat distribution pipeline is by arranging heat distribution pipeline in bridge floor lower floor, by heat source solution such as boilers, circulates under the paving layer of pontic, and bridge floor is heated up thus a kind of technology of making ice.But it is very large that bridge floor melts anti-icing system overall load, there is heating not in time or the reason such as dwell time is incorrect in prior art, causes energy consumption excessive, and bridge floor is overheated and sometimes react and cause icy on road not in time or do not have the shortcomings such as anti-icing effect.
Therefore, be necessary to design a kind of novel for highway bridge anti-icing and de-icing device and method.
Summary of the invention
An object of the present invention is the above-mentioned defect for existing in the anti-icing technology of existing heat distribution pipeline, provides a kind of energy-saving and cost-reducing, anti-icing effective, highway bridge heat distribution pipeline anti-icing system control device that can automatically run.
Above-mentioned purpose of the present invention realizes by the following technical solutions; This highway bridge heat distribution pipeline anti-icing system control device, comprises the variable frequency pump on the connection total pipeline under being installed on each water heater and being laid on bridge floor layer between heat distribution pipeline; It also comprises the bridge deck temperature sensor be installed on bridge floor, be installed on the pontic temperature pick up of pontic inside, be installed on the sky radiation temperature pick up on bridge, Atmosphere temp.and RH sensor and air velocity transducer, be installed on flow meter, feed flow temperature pick up, time liquid temp sensor that heat distribution pipeline house steward imports and exports position; The output of described bridge deck temperature sensor, pontic temperature pick up, sky radiation temperature pick up, Atmosphere temp.and RH sensor, air velocity transducer, feed flow temperature pick up, time liquid temp sensor is connected with the input of controller respectively, and the output of controller is connected with each water heater, pump variable frequency device.
Two of object of the present invention is to provide the control method based on above-mentioned highway bridge heat distribution pipeline anti-icing system control device, and the startup stage that the method comprising, rate-determining steps, anti-icing operation phase rate-determining steps and system stop rate-determining steps; Wherein:
The startup stage of described, rate-determining steps is, the data Collection & Processing System be made up of sky radiation temperature pick up, Atmosphere temp.and RH sensor, air velocity transducer, bridge deck temperature sensor, pontic temperature pick up, the total flowmeter for pipe of heat distribution pipeline, feed flow temperature pick up, time liquid temp sensor, controller calculates bridge deck overlays net heating quantity Q
3;
As bridge deck overlays net heating quantity Q
3>=0, then judge that whether bridge deck temperature is higher than 1.0 DEG C, as do not needed to put into operation higher than then heating system; As lower than 1.0 DEG C, then start a boiler operatiopn, water pump enters anti-icing running status after then running 30 minutes by rated frequency;
As bridge deck overlays net heating quantity Q
3<0, then judge that whether bridge deck temperature is higher than 2.5 DEG C, if higher than 2.5 DEG C, do not need to start thermal source and run; If bridge deck temperature is lower than 2.5 DEG C, calculate the number of units of required starting trouble, start thermal source and water pump operation according to required boiler number of units, water pump enters anti-icing running status after running 30 minutes by rated frequency;
Described anti-icing operation phase rate-determining steps first calculates bridge deck overlays net heating quantity Q according to the signal data of each sensor
3heating load Q actual in heat distribution pipeline
4, then by bridge deck overlays net heating quantity Q
3heating load Q actual in heat distribution pipeline
4contrast, with bridge deck overlays net heating quantity Q
3heating load Q actual in heat distribution pipeline
4difference based on regulate the frequency ascending, descending of water pump, and adopt different frequency ascending, descending schemes to regulate according to the difference of sky radiation temperature and atmospheric temperature change direction and size degree varies sample;
After water pump operation frequency is determined, judging that whether return water temperature is higher than setting value, as higher than then reducing by a boiler operatiopn, judging whether that meeting system stops rate-determining steps, satisfied then enter halted state; Judge that whether return water temperature is lower than setting value, as lower than then newly dropping into a boiler operatiopn, until all boilers all put into operation;
Described system stops rate-determining steps to be, if bridge deck temperature higher than 3.0 DEG C and continue to remain on more than 30 minutes and operating load lower than 30% of boiler output, then whole system is out of service.
Concrete, the startup stage of described in rate-determining steps, bridge deck overlays net heating quantity Q
3computational process be:
(1) the skyward radiation heat loss Q of bridge floor is calculated according to sky radiation temperature and bridge deck temperature
0, bridge deck temperature is lower than sky radiation temperature then Q
0for just, otherwise be negative;
(2) the convection current Radiant exothermicity Q on bridge surface is calculated according to the temperature of bridge floor wind speed and air and humidity and bridge deck temperature
1, bridge surface temperature is lower than atmospheric temperature then Q
1for just, otherwise be negative;
(3) the instantaneous gain and loss heat Q of bridge body is calculated according to pontic temperature and bridge deck temperature
2, pontic temperature is higher than bridge surface temperature then Q
2for just, otherwise be negative;
(4) bridge deck overlays net heating quantity Q is calculated
3=Q
2-Q
0-Q
1.
Concrete, in described anti-icing operation phase rate-determining steps, the regulation scheme of water pump frequency ascending, descending is:
(1) heating load Q as actual in heat distribution pipeline
4be more than or equal to bridge deck overlays net heating quantity Q
3, then run by following scheme:
In (1) 30 minute, sky radiation temperature often rises 1 DEG C, water pump operation frequency decrease 10Hz, judges whether lower than minimum running frequency, runs as then pressed minimum operation frequency lower than water pump minimum operation frequency;
In (2) 30 minutes, sky radiation temperature often declines 1 DEG C, and water pump operation frequency rising 5Hz, judges whether higher than maximum frequency of operation, runs as then pressed maximum running frequency higher than water pump maximum running frequency;
In (3) 30 minutes, bridge deck temperature often rises 1 DEG C, water pump operation frequency decrease 5Hz, judges whether lower than minimum running frequency, runs as then pressed minimum operation frequency lower than water pump minimum operation frequency;
In (4) 30 minutes, bridge deck temperature often declines 1 DEG C, and water pump operation frequency rising 5Hz, judges whether higher than maximum frequency of operation, runs as then pressed maximum running frequency higher than water pump maximum frequency of operation;
(2) heating load Q as actual in heat distribution pipeline
4be less than bridge deck overlays net heating quantity Q
3, then run by following scheme:
In (1) 30 minute, sky radiation temperature often rises 1 DEG C, and water pump operation frequency rising 5Hz, judges whether higher than maximum frequency of operation, as then run by maximum frequency of operation higher than water pump maximum frequency of operation;
In (2) 30 minutes, sky radiation temperature often declines 1 DEG C, and water pump operation frequency rising 15Hz, judges whether higher than maximum frequency of operation, runs as then pressed maximum running frequency higher than water pump maximum running frequency;
In (3) 30 minutes, bridge deck temperature often rises 1 DEG C, and water pump operation frequency rising 2Hz, judges whether higher than maximum frequency of operation, as then run by maximum frequency of operation higher than water pump maximum frequency of operation;
In (4) 30 minutes, bridge deck temperature often declines 1 DEG C, and water pump operation frequency rising 10Hz, judges whether higher than maximum frequency of operation, runs as then pressed maximum running frequency higher than water pump maximum frequency of operation.
The present invention adopts the sky radiation temperature pick up near layout bridge floor, Atmosphere temp.and RH sensor, air velocity transducer, bridge deck temperature sensor, pontic temperature pick up, heat distribution pipeline house steward is upper arranges that flow is taken into account import and export solution temperature sensor and known systematic parameter, calculate the actual heating load of heat distribution pipeline, the instantaneous net heating quantity of bridge deck overlays.Calculate according to actual heating load and net heating quantity and control the heating power of boiler startup and input, the control startup stage of completion system.Start heating system and after 30 minutes, proceed to the system anti-icing operation phase.In the anti-icing operation phase again according to the rule of the balance of heat supply and demand and sky radiation temperature and atmospheric temperature change, the running frequency of adjustment water pump and increase in real time or stop the number of units of boiler.Whether real-time judge meets the condition that system stops, as met system condition out of service, then and the operation of halt system.
The present invention is that heat distribution pipeline anti-icing system provides a kind of new control device and control method, can realize the object of energy-saving and cost-reducing, anti-icing effective, auto-controll operation.
Accompanying drawing explanation
Fig. 1 is the theory structure schematic diagram of anti-icing system control device of the present invention.
The control flow chart startup stage that Fig. 2 being anti-icing system of the present invention.
Fig. 3 is the anti-icing operation control flow chart of anti-icing system of the present invention.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further detail.
See Fig. 1, the highway bridge heat distribution pipeline anti-icing system control device of the embodiment of the present invention, comprises the variable frequency pump 3 be installed on each water heater 1 and the connection total pipeline under being laid on bridge floor layer between heat distribution pipeline 2; It also comprises the bridge deck temperature sensor 6 be installed on bridge floor, be installed on the pontic temperature pick up 10 of pontic inside, be installed on the sky radiation temperature pick up 11 on bridge, Atmosphere temp.and RH sensor 12 and air velocity transducer 13, be installed on flow meter 4, feed flow temperature pick up 5, time liquid temp sensor 7 that heat distribution pipeline 2 house steward imports and exports position; The output of bridge deck temperature sensor 6, pontic temperature pick up 10, sky radiation temperature pick up 11, Atmosphere temp.and RH sensor 12, air velocity transducer 13, feed flow temperature pick up 5, time liquid temp sensor 7 is connected with the input of controller 8 respectively, and the output of controller 8 is connected with the frequency converter 9 of each water heater 1, water pump 3.
Composition graphs 2, Fig. 3, whole control is divided into two stages by the highway bridge heat distribution pipeline anti-icing system control method of the embodiment of the present invention, is respectively and starts control stage and anti-icing operation control stage.Different phase takes different rate-determining steps.The control flow chart startup stage that Fig. 2 being, Fig. 3 is the control flow chart of anti-icing operation phase.
(1) rate-determining steps startup stage:
1) the skyward radiation heat loss Q of bridge floor is calculated according to sky radiation temperature and bridge deck temperature
0(bridge surface temperature is lower than sky radiation temperature then Q
0for just, otherwise be negative);
2) the convection current Radiant exothermicity Q on bridge surface is calculated according to the temperature of bridge floor wind speed and air and humidity and bridge deck temperature
1(bridge surface temperature is lower than atmospheric temperature then Q
1for just, otherwise be negative);
3) calculate the instantaneous of bridge body according to pontic temperature and bridge deck temperature and obtain (mistake) heat Q
2(pontic temperature is higher than bridge surface temperature then Q
2for just, otherwise be negative);
4) bridge deck overlays net heating quantity Q is calculated
3=Q
2-Q
0-Q
1, as net heating quantity Q
3>=0 illustrates that bridge deck overlays obtains hot, and bridge surface layer temperatures will rise; Judge that whether bridge deck temperature is higher than 1.0 DEG C, as do not needed to put into operation higher than then heating system; As lower than 1.0 DEG C, then start a boiler operatiopn, water pump enters anti-icing running status after then running 30 minutes by rated frequency (being generally 50Hz);
If bridge deck overlays net heating quantity Q
3<0, illustrate that bridge deck overlays is in heat radiation, bridge deck temperature will decline, and now judges that whether bridge deck temperature is higher than 2.5 DEG C, if higher than 2.5 DEG C, does not need to start thermal source and runs; If bridge deck temperature is lower than 2.5 DEG C, calculate the number of units of required starting trouble, start thermal source and water pump operation according to required boiler number of units, water pump enters anti-icing running status after running 30 minutes by rated frequency (being generally 50Hz).
(2) anti-icing operation rate-determining steps:
First the instantaneous required heating load of bridge floor layer and bridge deck overlays net heating quantity Q is calculated according to the signal data of sensor
3heating load Q actual in heat distribution pipeline
4.
As instantaneous actual heating load is more than or equal to required heating load, then run by following scheme:
1) in 30 minutes, sky radiation temperature often rises 1 DEG C, water pump operation frequency decrease 10Hz, judges whether lower than minimum running frequency, runs as then pressed minimum operation frequency lower than water pump minimum operation frequency;
2) in 30 minutes, sky radiation temperature often declines 1 DEG C, and water pump operation frequency rising 5Hz, judges whether higher than maximum frequency of operation, runs as then pressed maximum running frequency higher than water pump maximum running frequency;
3) in 30 minutes, bridge deck temperature often rises 1 DEG C, water pump operation frequency decrease 5Hz, judges whether lower than minimum running frequency, runs as then pressed minimum operation frequency lower than water pump minimum operation frequency;
4) in 30 minutes, bridge deck temperature often declines 1 DEG C, and water pump operation frequency rising 5Hz, judges whether higher than maximum frequency of operation, runs as then pressed maximum running frequency higher than water pump maximum frequency of operation;
As instantaneous actual heating load is less than required heating load (frequency rising), then run by following scheme:
1) in 30 minutes, sky radiation temperature often rises 1 DEG C, and water pump operation frequency rising 5Hz, judges whether higher than maximum frequency of operation, as then run by maximum frequency of operation higher than water pump maximum frequency of operation;
2) in 30 minutes, sky radiation temperature often declines 1 DEG C, and water pump operation frequency rising 15Hz, judges whether higher than maximum frequency of operation, runs as then pressed maximum running frequency higher than water pump maximum running frequency;
3) in 30 minutes, bridge deck temperature often rises 1 DEG C, and water pump operation frequency rising 2Hz, judges whether higher than maximum frequency of operation, as then run by maximum frequency of operation higher than water pump maximum frequency of operation;
4) in 30 minutes, bridge deck temperature often declines 1 DEG C, and water pump operation frequency rising 10Hz, judges whether higher than maximum frequency of operation, runs as then pressed maximum running frequency higher than water pump maximum frequency of operation;
After water pump operation frequency is determined, judge that whether return water temperature is higher than setting value, as higher than then reducing by a boiler operatiopn, judging whether to meet and stop rate-determining steps, satisfied then enter halted state; Judge that whether return water temperature is lower than setting value, as lower than then newly dropping into a boiler operatiopn, until all boilers all put into operation.
(3) system stops rate-determining steps:
Criterion: bridge floor sustaining temperature reaches 30 minutes higher than 3.0 DEG C, once stops a boiler, and as only having a boiler operatiopn at present, and operating load is lower than 30% of boiler output, then whole system is out of service.
Claims (4)
1. a highway bridge heat distribution pipeline anti-icing system control device, comprises the variable frequency pump on the connection total pipeline under being installed on each water heater and being laid on bridge floor layer between heat distribution pipeline; It is characterized in that: it also comprises the bridge deck temperature sensor be installed on bridge floor, be installed on the pontic temperature pick up of pontic inside, be installed on the sky radiation temperature pick up on bridge, Atmosphere temp.and RH sensor and air velocity transducer, be installed on flow meter, feed flow temperature pick up, time liquid temp sensor that heat distribution pipeline house steward imports and exports position; The output of described bridge deck temperature sensor, pontic temperature pick up, sky radiation temperature pick up, Atmosphere temp.and RH sensor, air velocity transducer, feed flow temperature pick up, time liquid temp sensor is connected with the input of controller respectively, and the output of controller is connected with each water heater, pump variable frequency device.
2. based on a control method for highway bridge heat distribution pipeline anti-icing system control device described in claim 1, it is characterized in that: the startup stage that it comprising, rate-determining steps, anti-icing operation phase rate-determining steps and system stop rate-determining steps; Wherein:
The startup stage of described, rate-determining steps is, the data Collection & Processing System be made up of sky radiation temperature pick up, Atmosphere temp.and RH sensor, air velocity transducer, bridge deck temperature sensor, pontic temperature pick up, the total flowmeter for pipe of heat distribution pipeline, feed flow temperature pick up, time liquid temp sensor, controller calculates bridge deck overlays net heating quantity Q
3;
As bridge deck overlays net heating quantity Q
3>=0, then judge that whether bridge deck temperature is higher than 1.0 DEG C, as do not needed to put into operation higher than then heating system; As lower than 1.0 DEG C, then start a boiler operatiopn, water pump enters anti-icing running status after then running 30 minutes by rated frequency;
As bridge deck overlays net heating quantity Q
3<0, then judge that whether bridge deck temperature is higher than 2.5 DEG C, if higher than 2.5 DEG C, do not need to start thermal source and run; If bridge deck temperature is lower than 2.5 DEG C, calculate the number of units of required starting trouble, start thermal source and water pump operation according to required boiler number of units, water pump enters anti-icing running status after running 30 minutes by rated frequency;
Described anti-icing operation phase rate-determining steps first calculates bridge deck overlays net heating quantity Q according to the signal data of each sensor
3heating load Q actual in heat distribution pipeline
4, then by bridge deck overlays net heating quantity Q
3heating load Q actual in heat distribution pipeline
4contrast, with bridge deck overlays net heating quantity Q
3heating load Q actual in heat distribution pipeline
4difference based on regulate the frequency ascending, descending of water pump, and adopt different frequency ascending, descending schemes to regulate according to the difference of sky radiation temperature and atmospheric temperature change direction and size degree varies sample;
After water pump operation frequency is determined, judging that whether return water temperature is higher than setting value, as higher than then reducing by a boiler operatiopn, judging whether that meeting system stops rate-determining steps, satisfied then enter halted state; Judge that whether return water temperature is lower than setting value, as lower than then newly dropping into a boiler operatiopn, until all boilers all put into operation;
Described system stops rate-determining steps to be, if bridge deck temperature higher than 3.0 DEG C and continue to remain on more than 30 minutes and operating load lower than 30% of boiler output, then whole system is out of service.
3. highway bridge heat distribution pipeline anti-icing system control method according to claim 2, is characterized in that: the startup stage of described in rate-determining steps, bridge deck overlays net heating quantity Q
3concrete computational process be:
(1) the skyward radiation heat loss Q of bridge floor is calculated according to sky radiation temperature and bridge deck temperature
0, bridge deck temperature is lower than sky radiation temperature then Q
0for just, otherwise be negative;
(2) the convection current Radiant exothermicity Q on bridge surface is calculated according to the temperature of bridge floor wind speed and air and humidity and bridge deck temperature
1, bridge surface temperature is lower than atmospheric temperature then Q
1for just, otherwise be negative;
(3) the instantaneous gain and loss heat Q of bridge body is calculated according to pontic temperature and bridge deck temperature
2, pontic temperature is higher than bridge surface temperature then Q
2for just, otherwise be negative;
(4) bridge deck overlays net heating quantity Q is calculated
3=Q
2-Q
0-Q
1.
4. highway bridge heat distribution pipeline anti-icing system control method according to claim 2, is characterized in that: in described anti-icing operation phase rate-determining steps, the regulation scheme of water pump frequency ascending, descending specifically:
(1) heating load Q as actual in heat distribution pipeline
4be more than or equal to bridge deck overlays net heating quantity Q
3, then run by following scheme:
In (1) 30 minute, sky radiation temperature often rises 1 DEG C, water pump operation frequency decrease 10Hz, judges whether lower than minimum running frequency, runs as then pressed minimum operation frequency lower than water pump minimum operation frequency;
In (2) 30 minutes, sky radiation temperature often declines 1 DEG C, and water pump operation frequency rising 5Hz, judges whether higher than maximum frequency of operation, runs as then pressed maximum running frequency higher than water pump maximum running frequency;
In (3) 30 minutes, bridge deck temperature often rises 1 DEG C, water pump operation frequency decrease 5Hz, judges whether lower than minimum running frequency, runs as then pressed minimum operation frequency lower than water pump minimum operation frequency;
In (4) 30 minutes, bridge deck temperature often declines 1 DEG C, and water pump operation frequency rising 5Hz, judges whether higher than maximum frequency of operation, runs as then pressed maximum running frequency higher than water pump maximum frequency of operation;
(2) heating load Q as actual in heat distribution pipeline
4be less than bridge deck overlays net heating quantity Q
3, then run by following scheme:
In (1) 30 minute, sky radiation temperature often rises 1 DEG C, and water pump operation frequency rising 5Hz, judges whether higher than maximum frequency of operation, as then run by maximum frequency of operation higher than water pump maximum frequency of operation;
In (2) 30 minutes, sky radiation temperature often declines 1 DEG C, and water pump operation frequency rising 15Hz, judges whether higher than maximum frequency of operation, runs as then pressed maximum running frequency higher than water pump maximum running frequency;
In (3) 30 minutes, bridge deck temperature often rises 1 DEG C, and water pump operation frequency rising 2Hz, judges whether higher than maximum frequency of operation, as then run by maximum frequency of operation higher than water pump maximum frequency of operation;
In (4) 30 minutes, bridge deck temperature often declines 1 DEG C, and water pump operation frequency rising 10Hz, judges whether higher than maximum frequency of operation, runs as then pressed maximum running frequency higher than water pump maximum frequency of operation.
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|---|---|---|---|
| CN201410764308.3A CN104404872B (en) | 2014-12-11 | 2014-12-11 | A kind of highway bridge heat distribution pipeline anti-icing system control device and control method |
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|---|---|---|---|
| CN201410764308.3A CN104404872B (en) | 2014-12-11 | 2014-12-11 | A kind of highway bridge heat distribution pipeline anti-icing system control device and control method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104863036A (en) * | 2015-05-30 | 2015-08-26 | 北京中企卓创科技发展有限公司 | Intelligent monitoring heating system for snow melting and deicing of airport pavement |
| CN104988830A (en) * | 2015-07-20 | 2015-10-21 | 大连理工大学 | Pavement deicing system for bridges with box-type cross section |
| CN105425854A (en) * | 2015-12-20 | 2016-03-23 | 湖南科技大学 | Anti-ice heating control method of bridge cable |
| CN105568814A (en) * | 2015-12-21 | 2016-05-11 | 无锡信大气象传感网科技有限公司 | Anti-freezing system for highway bridges |
| CN106522088A (en) * | 2016-11-14 | 2017-03-22 | 墨宝股份有限公司 | Highway bridge anti-freezing system |
| CN113846529A (en) * | 2021-10-21 | 2021-12-28 | 中建七局第四建筑有限公司 | Bridge deck deicing temperature control system and method |
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| JP2003328321A (en) * | 2002-05-16 | 2003-11-19 | Sumikei-Nikkei Engineering Co Ltd | Floor slab made of aluminum alloy with snow-melting antifreezing apparatus |
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| CN105568814A (en) * | 2015-12-21 | 2016-05-11 | 无锡信大气象传感网科技有限公司 | Anti-freezing system for highway bridges |
| CN106522088A (en) * | 2016-11-14 | 2017-03-22 | 墨宝股份有限公司 | Highway bridge anti-freezing system |
| CN113846529A (en) * | 2021-10-21 | 2021-12-28 | 中建七局第四建筑有限公司 | Bridge deck deicing temperature control system and method |
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