CN107807692A - Proton precessional magnetometer cooling water temperature control system and method - Google Patents
Proton precessional magnetometer cooling water temperature control system and method Download PDFInfo
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- CN107807692A CN107807692A CN201711166288.XA CN201711166288A CN107807692A CN 107807692 A CN107807692 A CN 107807692A CN 201711166288 A CN201711166288 A CN 201711166288A CN 107807692 A CN107807692 A CN 107807692A
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- 239000000498 cooling water Substances 0.000 title claims abstract description 185
- 238000000034 method Methods 0.000 title claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 311
- 238000001816 cooling Methods 0.000 claims abstract description 63
- 238000005342 ion exchange Methods 0.000 claims description 14
- 239000008213 purified water Substances 0.000 claims description 9
- 230000008859 change Effects 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 230000008569 process Effects 0.000 description 9
- 230000033228 biological regulation Effects 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 238000011217 control strategy Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 206010028980 Neoplasm Diseases 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
- F28C1/00—Direct-contact trickle coolers, e.g. cooling towers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
- F28F27/003—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus specially adapted for cooling towers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
- F28C1/00—Direct-contact trickle coolers, e.g. cooling towers
- F28C2001/006—Systems comprising cooling towers, e.g. for recooling a cooling medium
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
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- Automation & Control Theory (AREA)
Abstract
The invention provides a kind of proton precessional magnetometer cooling water temperature control system and method, the secondary cooling water circulation system of the present invention ensures that secondary cooling water output water temperature reaches technological requirement by two kinds of means of blower fan of cooling tower PID control and the second electromagnetic cross valve control of chilled water, while is cooled to the one cycle water after load cooling with secondary cooling water by a plate heat exchanger heat exchange；In addition, primary side cooling water control system is then cooling water is met that the cooling of Proton emission equipment requires after being adjusted jointly by the cas PID control and electric heater PID control of the first three-way solenoid valve of secondary cooling water.
Description
Technical field
The present invention relates to a kind of proton precessional magnetometer cooling water temperature control system and method
Background technology
Proton knife is the radiation treatment method of current cancer main flow, and proton precessional magnetometer main equipment is by enormous amount
Magnet form, it will produce huge heat energy in the process of running, and because its radiation protection requirement, equipment are arranged on one
Individual closed region, the running temperature of proton precessional magnetometer can directly affect the working condition of associated medical devices, and What is more, such as
Fruit proton precessional magnetometer temperature has huge unpredictable radiation hazradial bundle beyond critical value.How to solve to ensure proton precessional magnetometer
Normal operation is current urgent problem to be solved at the required temperature.
The content of the invention
It is an object of the invention to provide a kind of proton precessional magnetometer cooling water temperature control system and method, can solve the problem that really
Protect proton precessional magnetometer at the required temperature normal operation the problem of.
To solve the above problems, the present invention provides a kind of proton precessional magnetometer cooling water temperature control system, including：
Including a plate type heat exchanger, the primary cooling water circulatory system being connected with a plate type heat exchanger, connection
Temperature sensor, pressure transmitter and the electromagnetic flowmeter of each piping node in the primary cooling water circulatory system,
First PID control device, the central controller being connected with the first PID control device, wherein,
The primary cooling water circulatory system includes：
Multiple electric heaters in parallel, the public water inlet end of multiple electric heaters in parallel once board-like change with described
The water side connection of hot device；
Proton precessional magnetometer cooling load pipeline, the water inlet end of proton precessional magnetometer cooling load pipeline with it is described in parallel
The public water side connection of multiple electric heaters, the outer wall and the proton precessional magnetometer of the proton precessional magnetometer cooling load pipeline
Wall contacts, with by primary cooling water system pipeline to proton precessional magnetometer heat or cool；
First enclosed storage tank, the water inlet end of the first enclosed storage tank pass through electromagnetism two-way valve and the proton respectively
The water side of accelerator cooling load pipeline connects with the water side of the first enclosed storage tank；
From Purified Water Station, the water inlet end from Purified Water Station passes through the water inlet of electromagnetism two-way valve and the first enclosed storage tank
End connects with the common port of water side；
Ion exchange column, the water inlet end of the ion exchange column are connected by electromagnetism two-way valve and the water side from Purified Water Station
Connect, the water side of the ion exchange column is connected by electromagnetism two-way valve with a water inlet end of a plate type heat exchanger；
Multiple first water pumps in parallel, the water inlet end of each first water pump and water side are connected to electromagnetism two-way valve,
The common port of the electromagnetism two-way valve of the water inlet end of multiple first water pumps in parallel connects with the water inlet end of the ion exchange column
Connect, the common port of the electromagnetism two-way valve of the water side of multiple first water pumps in parallel and the water side of the ion exchange column
Connection；
The input of the first PID control device respectively with each pipeline section in the primary cooling water circulatory system
Temperature sensor, the pressure transmitter of point connect with electromagnetic flowmeter, the output end of the first PID control device respectively with institute
State each electric heater, electromagnetism two-way valve and the connection of the first water pump in the primary cooling water circulatory system.
Further, in said system, the first PID control device will for being obtained from the central controller
Water temperature in the primary cooling water circulatory system is controlled to the instruction of the first preset temperature, and from the primary cooling water circulatory system
In each piping node temperature sensor obtain current water temperature, current hydraulic pressure is obtained from each pressure transmitter and from
Each electromagnetic flowmeter obtains at least one in current water-carrying capacity, warm according to being preset in the primary cooling water circulatory system
At least one of in the difference of degree and current water temperature, current hydraulic pressure and current water-carrying capacity, by once being cooled down described in regulation
The operation number of units and heat time length of electric heater in water circulation system, the folding size of electromagnetism two-way valve and the first water pump
Operation number of units and rotating speed at least one of, until by each piping node in the primary cooling water circulatory system work as
Preceding lower water temperature is extremely identical or close with first preset temperature.
Further, in said system, in addition to the secondary cooling water circulation being connected with a plate type heat exchanger
System, temperature sensor, pressure transmitter and the electricity of each piping node being connected in the secondary cooling water circulation system
Magnetic flowmeter, the second PID control device being connected with the central controller, wherein,
The secondary cooling water circulation system includes：
Multiple cooling towers of parallel connection, the blower fan being arranged on each tower, the water inlet end of each cooling tower pass sequentially through electromagnetism
Two-way valve, the first three-way solenoid valve are connected with the secondary water side of a plate type heat exchanger, first three-way solenoid valve
It is connected by electromagnetism two-way valve with the secondary water inlet end of a plate type heat exchanger；
Second enclosed storage tank, the water inlet end of the second enclosed storage tank pass through electromagnetism two-way valve and each cooling tower
Water side connects；
Multiple second water pumps in parallel, the water inlet end of each second water pump and water side are connected to electromagnetism two-way valve,
The common port of the electromagnetism two-way valve of the water inlet end of multiple second water pumps in parallel and the water side of the second enclosed storage tank connect
Connect；
Secondary plate type heat exchanger, the common port of the electromagnetism two-way valve of the water side of multiple second water pumps in parallel and institute
State secondary plate type heat exchanger the first water inlet end connection, the first water side of the secondary plate type heat exchanger with it is described once board-like
The secondary water inlet end connection of heat exchanger, the second water inlet end of the secondary plate type heat exchanger pass through the second three-way solenoid valve and technique
The water inlet end connection of chilled water pipeline, the second water side of the secondary plate type heat exchanger and going out for the technique chilled water pipeline
Water end (W.E.) connects；
The input of the second PID control device respectively with each pipeline section in the secondary cooling water circulation system
Temperature sensor, the pressure transmitter of point connect with electromagnetic flowmeter, the output end of the second PID control device respectively with institute
State the first three-way solenoid valve in secondary cooling water circulation system, the second three-way solenoid valve, each electromagnetism two-way valve, each second
Water pump connection, each cooling tower connect with each blower fan.
Further, in said system, the second PID control device will for being obtained from the central controller
Water temperature in secondary cooling water circulation system is controlled to the instruction of the second preset temperature, and from the secondary cooling water circulation system
In each piping node temperature sensor obtain current water temperature, current hydraulic pressure is obtained from each pressure transmitter and from
Each electromagnetic flowmeter obtains at least one in current water-carrying capacity, warm according to being preset in the secondary cooling water circulation system
At least one of in the difference of degree and current water temperature, current hydraulic pressure and current water-carrying capacity, by adjusting the secondary cooling
The folding size of each electromagnetism two-way valve, the operation number of units of the second water pump and rotating speed, the operation of cooling tower in water circulation system
At least one of in number of units and the operation number of units and rotating speed of blower fan, until by each pipe in the secondary cooling water circulation system
The current lower water temperature of circuit node is extremely identical or close with first preset temperature.
Further, in said system, the second PID control device, for being circulated according to the primary cooling water
In system in the difference of preset temperature and current water temperature, current hydraulic pressure and current water-carrying capacity at least one of, pass through regulation
The folding size of the second three-way solenoid valve in the secondary cooling water circulation system, until by the secondary cooling water cyclic system
The current lower water temperature of each piping node in system is extremely identical or close with first preset temperature.
Further, in said system, a water side of a plate type heat exchanger is connected with the temperature and passed
Sensor；
The input of the second PID control device also passes with the temperature of a water side of a plate type heat exchanger
Sensor connects.
Further, in said system, the second PID control device, for according to a plate type heat exchanger
A water side the Current Temperatures of a water side that get of temperature sensor, adjust the folding of the first three-way solenoid valve
Size, until the Current Temperatures and first preset temperature of a water side are identical or close.
Further, in said system, in addition to：
The liquid level gauge being arranged at least one in the cooling tower, the first enclosed storage tank, the first enclosed storage tank；
It is arranged at the PH detectors of each piping node once and/or in secondary cooling water circulation system；
The electrical conductivity being arranged at least one in the cooling tower, the first enclosed storage tank, the first enclosed storage tank
Analyzer.
According to the another side of the present invention, there is provided a kind of proton precessional magnetometer cooling water temperature control method, methods described include：
First PID control device from the central controller obtain by the water temperature in the primary cooling water circulatory system control to
The instruction of first preset temperature；
The temperature sensor of first PID control device from each piping node in the primary cooling water circulatory system obtains
Current water temperature is taken, current hydraulic pressure is obtained from each pressure transmitter and current water-carrying capacity is obtained from each electromagnetic flowmeter
At least one of in；
First PID control device according to the difference of preset temperature and current water temperature in the primary cooling water circulatory system,
At least one of in current hydraulic pressure and current water-carrying capacity, by adjusting the electrical heating in the primary cooling water circulatory system
In the operation number of units and rotating speed of the operation number of units and heat time length of device, the folding size of electromagnetism two-way valve and the first water pump
At least one of, until by the current lower water temperature of each piping node in the primary cooling water circulatory system to it is described
First preset temperature is identical or close.
Further, in the above-mentioned methods, in addition to：
The second PID control device is obtained the water temperature control in secondary cooling water circulation system from the central controller
Make to the instruction of the second preset temperature；
TEMP of the second PID control device from each piping node in the secondary cooling water circulation system
Device obtains current water temperature, current hydraulic pressure is obtained from each pressure transmitter and current water is obtained from each electromagnetic flowmeter
At least one of in flow；
The second PID control device is according to the difference of preset temperature and current water temperature in the secondary cooling water circulation system
At least one of in value, current hydraulic pressure and current water-carrying capacity, it is each in the secondary cooling water circulation system by adjusting
The folding size of individual electromagnetism two-way valve, the operation number of units of the second water pump and rotating speed, the operation number of units of cooling tower and the operation of blower fan
At least one of in number of units and rotating speed, until by the current water of each piping node in the secondary cooling water circulation system
Temperature is adjusted to identical or close with first preset temperature.
Further, in the above-mentioned methods, in addition to：
The second PID control device is according to the difference of preset temperature and current water temperature in the primary cooling water circulatory system
At least one of in value, current hydraulic pressure and current water-carrying capacity, by adjusting the in the secondary cooling water circulation system
The folding size of two three-way solenoid valves, until by the current water of each piping node in the secondary cooling water circulation system
Temperature is adjusted to identical or close with first preset temperature.
Further, in the above-mentioned methods, in addition to：
The second PID control device obtains according to the temperature sensor of a water side of a plate type heat exchanger
The Current Temperatures for the water side arrived, the folding size of the first three-way solenoid valve is adjusted, until a water side is worked as
Preceding temperature and first preset temperature are identical or close.
Compared with prior art, secondary cooling water circulation system of the invention passes through blower fan of cooling tower PID control and freezing
Two kinds of means of the second electromagnetic cross valve control of water ensure that secondary cooling water output water temperature reaches technological requirement, while cold to loading
But the one cycle water after is cooled with secondary cooling water by a plate heat exchanger heat exchange；
In addition, primary side cooling water control system is then the cascade PID by the first three-way solenoid valve of secondary cooling water
Control and electric heater PID control make cooling water meet that the cooling of Proton emission equipment requires after adjusting jointly.
It is of the invention that rationally effectively solve medical oncology system proton knife nucleus equipment concentrates generation in the process of running
The accurate control problem of temperature after a large amount of heat energy.Cooling water temperature control system leaves enough surpluses to increase and decrease inspection in lectotype selection
The physical quantity of survey, change control strategy case.Meanwhile to prevent that coolant-temperature gage is too fast in instantaneous variation after cooling, from the first enclosed
Storage tank, the second enclosed storage tank buffering cooling water tip temperature, make temperature in effective controlled range, guarantee cooling water automatic control system
System can be adjusted precisely to required water temperature.By accurate temperature sensor, pressure transmitter and electromagnetic flowmeter, matter is followed the trail of
Sub- accelerator load change different time produces different heats, ensures temperature of the equipment in strict regulations with rational control method
Normal work in the range of degree.
Meanwhile robot control system(RCS) of the present invention can be real by man-machine interface to the rational coordinated signals of system equipment and monitoring
The automatic running of existing cooling water system, can facilitate operation personnel preferably to manage, and accomplish that scene is unattended, management and dispatching,
Data automatically storage and it is analysis automated, timely and effectively automatic control process cooling water take away proton precessional magnetometer heating heat,
Ensure process equipment normal operation at the required temperature.
Brief description of the drawings
Fig. 1 is the proton precessional magnetometer cooling water temperature control system figure of one embodiment of the invention；
Fig. 2 is the module map of the proton precessional magnetometer cooling water temperature control system of one embodiment of the invention；
Fig. 3 is the I/O module scene photos of the proton precessional magnetometer cooling water temperature control system of one embodiment of the invention；
Fig. 4 is the circulating cooling water tower control logic figure of one embodiment of the invention；
Fig. 5 is the PID control structure chart of one embodiment of the invention；
Fig. 6 invents the cas PID control structure chart of an embodiment.
Embodiment
In order to facilitate the understanding of the purposes, features and advantages of the present invention, it is below in conjunction with the accompanying drawings and specific real
Applying mode, the present invention is further detailed explanation.
As illustrated in fig. 1 and 2, the present invention provides a kind of proton precessional magnetometer cooling water temperature control system, including once board-like
Heat exchanger 1, the primary cooling water circulatory system 100 being connected with a plate type heat exchanger 1, is connected to the primary cooling water
Temperature sensor 2, pressure transmitter and the electromagnetic flowmeter of each piping node in the circulatory system, the first PID (ratio, product
Divide, differential) control device, the central controller being connected with the first PID control device, wherein,
The primary cooling water circulatory system 100 includes：
Multiple electric heaters 101 in parallel, the public water inlet end of multiple electric heaters 101 in parallel with it is described once
The water side connection of plate type heat exchanger；
Proton precessional magnetometer cooling load pipeline 102, the water inlet end of proton precessional magnetometer cooling load pipeline with it is described simultaneously
The public water side connection of multiple electric heaters 101 of connection, the outer wall of proton precessional magnetometer cooling load pipeline 102 with it is described
The wall contacts of proton precessional magnetometer, so that proton precessional magnetometer is heated or cooled by primary cooling water system pipeline；
First enclosed storage tank 103, the water inlet end of the first enclosed storage tank 103 pass through electromagnetism two-way valve 104 respectively
It is connected with the water side of proton precessional magnetometer cooling load 102 and the water side of the first enclosed storage tank；
From Purified Water Station 105, the water inlet end from Purified Water Station 105 passes through electromagnetism two-way valve and the first enclosed storage tank
103 water inlet end connects with the common port of water side；
Ion exchange column 106, the water inlet end of the ion exchange column 106 by electromagnetism two-way valve with from Purified Water Station 105
Water side connects, the water side of the ion exchange column 106 by electromagnetism two-way valve and a plate type heat exchanger 1 once
Water inlet end connects；
Multiple first water pumps 107 in parallel, the water inlet end of each first water pump 107 and water side are connected to electromagnetism two
Port valve, common port and the ion exchange column 106 of the electromagnetism two-way valve of the water inlet end of multiple first water pumps in parallel
Water inlet end is connected, and common port and the ion of the electromagnetism two-way valve of the water side of multiple first water pumps 107 in parallel are handed over
Change the water side connection of post 106；
The input of the first PID control device respectively with each pipeline section in the primary cooling water circulatory system
Temperature sensor 2, the pressure transmitter of point connect with electromagnetic flowmeter, the output end of the first PID control device respectively with
Each electric heater 101, the water pump 107 of electromagnetism two-way valve 104 and first in the primary cooling water circulatory system connect.
Here, the present embodiment is directly contacted using one cycle water as heat transfer medium with cooling object, take away and set with water
Standby heat power consumption.
In the embodiment of proton precessional magnetometer cooling water temperature control system one of the present invention, in addition to once board-like change with described
The secondary cooling water circulation system 200 that hot device 1 connects, each piping node being connected in the secondary cooling water circulation system
Temperature sensor 2, pressure transmitter and electromagnetic flowmeter, the second PID control device being connected with the central controller, its
In,
The secondary cooling water circulation system 200 includes：
Multiple cooling towers 201 of parallel connection, the blower fan 202 being arranged on each tower, the water inlet end of each cooling tower 201 is successively
It is connected by electromagnetism two-way valve 203, the first three-way solenoid valve 204 with the secondary water side of a plate type heat exchanger 1, it is described
First three-way solenoid valve 204 is connected by electromagnetism two-way valve with the secondary water inlet end of a plate type heat exchanger；
Second enclosed storage tank 205, the water inlet end of the second enclosed storage tank 205 by electromagnetism two-way valve with it is each cold
But the water side connection of tower 201；
Multiple second water pumps 206 in parallel, the water inlet end of each second water pump 206 and water side are connected to electromagnetism two
Port valve, the common port and the second enclosed storage tank 205 of the electromagnetism two-way valve of the water inlet end of multiple second water pumps 206 in parallel
Water side connection；
Secondary plate type heat exchanger 207, the electromagnetism two-way valve of the water side of multiple second water pumps 206 in parallel it is public
End be connected with the first water inlet end of the secondary plate type heat exchanger 207, the first water side of the secondary plate type heat exchanger 207 and
The secondary water inlet end connection of plate type heat exchanger 1, the second water inlet end of the secondary plate type heat exchanger 207 pass through second
Three-way solenoid valve 208 is connected with the water inlet end of technique chilled water pipeline 209, the second water outlet of the secondary plate type heat exchanger 207
End is connected with the water side of the technique chilled water pipeline 209；
The input of the second PID control device respectively with each pipeline section in the secondary cooling water circulation system
Temperature sensor 2, the pressure transmitter of point connect with electromagnetic flowmeter, the output end of the second PID control device respectively with
The first three-way solenoid valve 204, the second three-way solenoid valve 208, each electromagnetism two-way valve in the secondary cooling water circulation system
203rd, each second water pump 206 connects, each cooling tower 201 and each blower fan 202 connect.
Here, the present embodiment uses the Two-way Cycle type of cooling, i.e., using one cycle water as heat transfer medium and cooling pair
As directly contacting, the heat power consumption of water equipment is taken away, and secondary cycle water is transferred heat to by a plate type heat exchanger, then
Heat is distributed in ambient atmosphere through cooling tower or takes away heat with handpiece Water Chilling Units.
The cooling water temperature control system of the present embodiment includes primary side cooling water temperature control PID, secondary cooling water temperature control tandem
PID, the automatic running of the precision controlling of the cooling water temperature of proton precessional magnetometer can be realized.Meeting that proton precessional magnetometer is cooled to
While water temperature requirement, reach accuracy of temperature control regulation, rational equipment linkage control and monitoring can be preferably to Proton emissions
Device is safely and effectively managed, and accomplishes that scene is unattended, management and dispatching, data store and analysis automated automatically, have
A whole set of cooling water robot control system(RCS) carries out daily control.
In the embodiment of proton precessional magnetometer cooling water temperature control system one of the present invention, the first PID control device, use
The water temperature in the primary cooling water circulatory system is controlled to the instruction of the first preset temperature in being obtained from the central controller, and
Current water temperature is obtained from the temperature sensor 2 of each piping node in the primary cooling water circulatory system, from each pressure
Power transmitter obtains current hydraulic pressure and at least one in current water-carrying capacity is obtained from each electromagnetic flowmeter, according to described
In the primary cooling water circulatory system in the difference of preset temperature and current water temperature, current hydraulic pressure and current water-carrying capacity at least
One, by the operation number of units and heat time length, electricity that adjust the electric heater 101 in the primary cooling water circulatory system
At least one of in the folding size of magnetic two-way valve 104 and the operation number of units and rotating speed of the first water pump 107, until by described in once
The current lower water temperature of each piping node in cooling water recirculation system is extremely identical or close with first preset temperature.
Here, for example, the feedback signal of the leaving water temperature sensors of electric heater can be gathered, using pid control mode, tune
Electricity-saving heating device heating power, water outlet temperature is kept to meet technological requirement.Meanwhile electric heating system and a pump circulation system
It is chain, ensure security of system.
The present invention the embodiment of proton precessional magnetometer cooling water temperature control system one in, the second PID control device from
The central controller obtains and controls the water temperature in secondary cooling water circulation system to the instruction of the second preset temperature, and from institute
The temperature sensor 2 for stating each piping node in secondary cooling water circulation system obtains current water temperature, become from each pressure
Send device to obtain current hydraulic pressure and at least one in current water-carrying capacity is obtained from each electromagnetic flowmeter, according to described secondary
In cooling water recirculation system in the difference of preset temperature and current water temperature, current hydraulic pressure and current water-carrying capacity at least one
, by the folding size, the second water pump 206 that adjust each electromagnetism two-way valve 203 in the secondary cooling water circulation system
Operation number of units and rotating speed, the operation number of units of cooling tower 201 and blower fan 202 operation number of units and rotating speed at least one of, directly
To by the current lower water temperature of each piping node in the secondary cooling water circulation system temperature is preset to described first
Spend identical or close.
Here, for example, when the secondary cycle backwater of secondary cooling water circulation system passes through cooling tower, ensureing leaving water temperature
In the case of control cooling tower number of units, the operation number of units of blower fan and the running frequency of blower fan, guarantee leaving water temperature.
Specifically, as shown in figure 4, can be using technological requirement temperature as control targe, when cooling tower leaving water temperature feeds back height
In the temperature, then blower fan frequency is heightened, increase by a Fans if temperature still can not drop to the temperature；Otherwise work as cooling tower
Leaving water temperature feedback is less than the temperature, then turns down blower fan frequency, if temperature still can not rise to the temperature, reduce by a typhoon
Machine.
In the embodiment of proton precessional magnetometer cooling water temperature control system one of the present invention, the second PID control device, use
According to the difference of preset temperature and current water temperature, current hydraulic pressure and current current in the primary cooling water circulatory system
At least one of in amount, by adjusting the folding size of the second three-way solenoid valve 208 in the secondary cooling water circulation system,
Until the current lower water temperature of each piping node in the secondary cooling water circulation system is extremely preset with described first
Temperature is identical or close.
Here, when secondary side coolant water temperature system is unfavorable to temperature accuracy control in outdoor climate conditions, can be whole
Secondary cycle coolant-temperature gage is reduced using chilled water and secondary plate type heat exchanger.Now, the second PID control device is according to secondary board-like
The leaving water temperature feedback of the protractor of the water side of heat exchanger, by adjusting the aperture of the second three-way solenoid valve, to adjust freezing
The circulation water of water, so as to control leaving water temperature.
Specifically, when outdoor climate is not suitable for, water temperature is still higher than technological requirement temperature after cooling tower reaches at full capacity,
Chilled water will participate in secondary cooling water regulation and control.In this case, secondary cycle water is entering secondary plate after cooling down tower cooler
Formula exchanger, the aperture control that the second three-way solenoid valve is adjusted according to secondary plate heat exchanger leaving water temperature feedback PID control are cold
Freeze water-carrying capacity, so as to stablize water temperature.
In the embodiment of proton precessional magnetometer cooling water temperature control system one of the present invention, a plate type heat exchanger 1
Water side is connected with the temperature sensor 2；
Temperature of the input of the second PID control device also with a water side of a plate type heat exchanger 1
Sensor 2 connects.
In the embodiment of proton precessional magnetometer cooling water temperature control system one of the present invention, the second PID control device root
The Current Temperatures of the water side got according to the temperature sensor 2 of a water side of a plate type heat exchanger 1, adjust
The folding size of the first three-way solenoid valve 204 is saved, until the Current Temperatures of a water side and first preset temperature
It is identical or close.
Here, when the one cycle backwater of the primary cooling water circulatory system passes through a heat-exchangers of the plate type, using tandem
Pid control mode, by the feedback of a leaving water temperature sensors of a plate type heat exchanger, control a water plate type heat exchanger
Preceding first electromagnetic three-way valve opening, to adjust the secondary water-carrying capacity for entering a plate type heat exchanger, to control plate type heat exchanger one
The temperature of secondary water side meets first preset temperature.
As shown in figure 3, in the embodiment of proton precessional magnetometer cooling water temperature control system one of the present invention, in addition to：
It is arranged at least one in the cooling tower 201, the first enclosed storage tank 103, the first enclosed storage tank 205
Liquid level gauge；
It is arranged at the PH detections of each piping node once and/or in secondary cooling water circulation system 100,200
Instrument；
It is arranged at least one in the cooling tower 201, the first enclosed storage tank 103, the first enclosed storage tank 205
Conductivity analyzer etc., so as to provide support to gather and analyzing full water sample notebook data.
In addition, the central controller can use advanced system software platform, major function include data acquisition function,
Trend is shown, alarm indication etc., reaches full figure control interface management, realizes that scene is unattended.
In a specific embodiment of the invention, operating mode control station is hard using Honeywell HC900 controllers and I/O
Part, host computer use Honeywell EBI system software platforms, and controller, server and industrial computer are through core switch
RJ45 and opto-electronic conversion hardware interface are communicated by ICP/IP protocol.DCS switch boards are positioned over scene, and industrial computer is positioned over control
In computer room processed.DCS controllers gather each sensor information and the running status of electromechanical equipment, are uploaded to central host computer Tu Kong circle
Face, while controller controls related electromechanical equipment to run according to the programming automatic linkage of technological requirement, realizes that scene is unattended,
Management and dispatching, data store and analyzed automatically alarm and are automatically performed by central control room.
Conventional pid control function module has been integrated with from DCS programming software HC900 Designer.When in use
The module can be directly invoked, sets input and output and pid parameter, it is whole then to carry out parameter according to live practical operation situation
It is fixed.Such as secondary cycle water system control system for cooling tower.With 26 DEG C for control targe, when cooling tower leaving water temperature feedback is higher than
26 DEG C, then blower fan frequency is heightened, increase by a Fans if temperature still can not drop to 26 DEG C；Otherwise when cooling tower goes out water temperature
Degree feedback is less than 26 DEG C, then turns down blower fan frequency, if temperature still can not rise to 26 DEG C, reduce by a Fans, see Fig. 4,
Separate unit cooling tower control logic.Meanwhile the switching signal of pid control module and water pump is chain, when water pump is in running status
When, pid control module could normal operation.
Under normal circumstances, as shown in figure 5, cooling tower control logic disturbs lower output and error signal under unit feedback
Wherein, G1 (s), G2 (s) are transmission function, and T (s) is input signal, and T1 (s) is disturbance input.When | G1 (s) G2
(s) | ＞ ＞ 1 and | G1 (s) | during ＞ ＞ 1, T2 (s) ≈ T (s), E (s) → 0, be achieved in that output valve approximately be equal to require
Input value is set, meets that control requires and has stronger rejection ability to disturbance.
When outdoor climate is not suitable for, water temperature is still higher than technological requirement temperature after cooling tower reaches at full capacity, and chilled water will
Participate in secondary cooling water regulation and control.In this case, secondary cycle water is entering plate heat exchanger, foundation after cooling down tower cooler
The aperture control chilled-water flow of plate heat exchanger leaving water temperature feedback PID control regulation by-passing valve, so as to stablize water temperature.
As shown in fig. 6, one cycle water introduces cas PID control with the heat exchange of secondary cycle water：
Wherein, G3 (s), G4 (s) are secondary PID transmission function, and T (s) is input signal, and T3 (s) is that subloop disturbance is defeated
Enter, T*2 (s) is the output of process.
The cascade control system has major and minor PID control device, and its adjustment effect emphasizes particularly on different fields.The setting of pair control is with outer
(transmission function is shown in formula 3) that portion changes and changed, the detection and control variable that pair control is carried out are to stablize the auxiliary of master variable introducing
Variable is helped, main target is servo antrol effect.
By the auxiliary " coarse adjustment " of secondary PID control device, master controller exports the input as submaster controller, the mesh of master control
Mark is permissible accuracy given temperature (transmission function is identical with above-mentioned formula 1), and master controller gives system " fine tuning ", reaches technique
It is required that water temperature control accuracy.
Present invention additionally comprises the HMI man-machine interfaces after corresponding progress double optimization, by supporting the use realization with host computer
Following functions：
(1) data acquisition function, automatic display, continuously detect and system is shown in the form of process chart
The data such as equipment running status, temperature, pressure, flow, water quality parameter.
(2) alarm indication, automatic alarm and actively take accident pretreatment measure, prevent the generation and expansion of accident, reach
To the protection person and the safety of equipment.
(3) trend shows (in real time, history), the data message uploaded according to DCS, draws trend curve figure, report and report
Table, system diagnostics report.
According to the another side of the present invention, a kind of proton precessional magnetometer cooling water temperature control method, its feature are also provided
It is, using the proton precessional magnetometer cooling water temperature control system as described in any one of claim 1 to 8, methods described includes：
First PID control device from the central controller obtain by the water temperature in the primary cooling water circulatory system control to
The instruction of first preset temperature；
The temperature sensor of first PID control device from each piping node in the primary cooling water circulatory system obtains
Current water temperature is taken, current hydraulic pressure is obtained from each pressure transmitter and current water-carrying capacity is obtained from each electromagnetic flowmeter
At least one of in；
First PID control device according to the difference of preset temperature and current water temperature in the primary cooling water circulatory system,
At least one of in current hydraulic pressure and current water-carrying capacity, by adjusting the electrical heating in the primary cooling water circulatory system
In the operation number of units and rotating speed of the operation number of units and heat time length of device, the folding size of electromagnetism two-way valve and the first water pump
At least one of, until by the current lower water temperature of each piping node in the primary cooling water circulatory system to it is described
First preset temperature is identical or close.
In the embodiment of proton precessional magnetometer cooling water temperature control method one of the present invention, in addition to：
The second PID control device is obtained the water temperature control in secondary cooling water circulation system from the central controller
Make to the instruction of the second preset temperature；
TEMP of the second PID control device from each piping node in the secondary cooling water circulation system
Device obtains current water temperature, current hydraulic pressure is obtained from each pressure transmitter and current water is obtained from each electromagnetic flowmeter
At least one of in flow；
The second PID control device is according to the difference of preset temperature and current water temperature in the secondary cooling water circulation system
At least one of in value, current hydraulic pressure and current water-carrying capacity, it is each in the secondary cooling water circulation system by adjusting
The folding size of individual electromagnetism two-way valve, the operation number of units of the second water pump and rotating speed, the operation number of units of cooling tower and the operation of blower fan
At least one of in number of units and rotating speed, until by the current water of each piping node in the secondary cooling water circulation system
Temperature is adjusted to identical or close with first preset temperature.
In the embodiment of proton precessional magnetometer cooling water temperature control method one of the present invention, in addition to：
The second PID control device is according to the difference of preset temperature and current water temperature in the primary cooling water circulatory system
At least one of in value, current hydraulic pressure and current water-carrying capacity, by adjusting the in the secondary cooling water circulation system
The folding size of two three-way solenoid valves, until by the current water of each piping node in the secondary cooling water circulation system
Temperature is adjusted to identical or close with first preset temperature.
In the embodiment of proton precessional magnetometer cooling water temperature control method one of the present invention, in addition to：
The second PID control device obtains according to the temperature sensor of a water side of a plate type heat exchanger
The Current Temperatures for the water side arrived, the folding size of the first three-way solenoid valve is adjusted, until a water side is worked as
Preceding temperature and first preset temperature are identical or close.
The detailed content of each embodiment of the above method, for details, reference can be made to the corresponding part of each system embodiment, here, no longer
Repeat.
In summary, secondary cooling water circulation system of the invention pass through blower fan of cooling tower PID control and chilled water
Two two kinds of electromagnetic cross valve control means ensure that secondary cooling water output water temperature reaches technological requirement, at the same to load cooling after
One cycle water is cooled with secondary cooling water by a plate heat exchanger heat exchange；
In addition, primary side cooling water control system is then the cascade PID by the first three-way solenoid valve of secondary cooling water
Control and electric heater PID control make cooling water meet that the cooling of Proton emission equipment requires after adjusting jointly.
It is of the invention that rationally effectively solve medical oncology system proton knife nucleus equipment concentrates generation in the process of running
The accurate control problem of temperature after a large amount of heat energy.Cooling water temperature control system leaves enough surpluses to increase and decrease inspection in lectotype selection
The physical quantity of survey, change control strategy case.Meanwhile to prevent that coolant-temperature gage is too fast in instantaneous variation after cooling, from the first enclosed
Storage tank, the second enclosed storage tank buffering cooling water tip temperature, make temperature in effective controlled range, guarantee cooling water automatic control system
System can be adjusted precisely to required water temperature.By accurate temperature sensor, pressure transmitter and electromagnetic flowmeter, matter is followed the trail of
Sub- accelerator load change different time produces different heats, ensures temperature of the equipment in strict regulations with rational control method
Normal work in the range of degree.
Meanwhile robot control system(RCS) of the present invention can be real by man-machine interface to the rational coordinated signals of system equipment and monitoring
The automatic running of existing cooling water system, can facilitate operation personnel preferably to manage, and accomplish that scene is unattended, management and dispatching,
Data automatically storage and it is analysis automated, timely and effectively automatic control process cooling water take away proton precessional magnetometer heating heat,
Ensure process equipment normal operation at the required temperature.
Each embodiment is described by the way of progressive in this specification, what each embodiment stressed be and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.
Obviously, those skilled in the art can carry out the spirit of various changes and modification without departing from the present invention to invention
And scope.So, if these modifications and variations of the present invention belong to the claims in the present invention and its equivalent technologies scope it
Interior, then the present invention is also intended to including these changes and modification.
Claims (12)
- A kind of 1. proton precessional magnetometer cooling water temperature control system, it is characterised in that including：Including a plate type heat exchanger, the primary cooling water circulatory system being connected with a plate type heat exchanger, institute is connected to State temperature sensor, pressure transmitter and the electromagnetic flowmeter of each piping node in the primary cooling water circulatory system, first PID control device, the central controller being connected with the first PID control device, wherein,The primary cooling water circulatory system includes：Multiple electric heaters in parallel, the public water inlet end of multiple electric heaters in parallel and a plate type heat exchanger A water side connection；Proton precessional magnetometer cooling load pipeline, the water inlet end of proton precessional magnetometer cooling load pipeline with it is described in parallel multiple The public water side connection of electric heater, the outer wall of proton precessional magnetometer cooling load pipeline are outer with the proton precessional magnetometer Wall contacts；First enclosed storage tank, the water inlet end of the first enclosed storage tank pass through electromagnetism two-way valve and the Proton emission respectively The water side of device cooling load pipeline connects with the water side of the first enclosed storage tank；From Purified Water Station, the water inlet end from Purified Water Station by the water inlet end of electromagnetism two-way valve and the first enclosed storage tank and The common port connection of water side；Ion exchange column, the water inlet end of the ion exchange column are connected by electromagnetism two-way valve with the water side from Purified Water Station, institute The water side for stating ion exchange column is connected by electromagnetism two-way valve with a water inlet end of a plate type heat exchanger；Multiple first water pumps in parallel, the water inlet end of each first water pump and water side are connected to electromagnetism two-way valve, described The common port of the electromagnetism two-way valve of the water inlet end of multiple first water pumps in parallel is connected with the water inlet end of the ion exchange column, institute The common port for stating the electromagnetism two-way valve of the water side of multiple first water pumps of parallel connection is connected with the water side of the ion exchange column；The input of the first PID control device respectively with each piping node in the primary cooling water circulatory system Temperature sensor, pressure transmitter connect with electromagnetic flowmeter, and the output end of the first PID control device is respectively with described one Each electric heater, electromagnetism two-way valve and the connection of the first water pump in secondary cooling water recirculation system.
- 2. proton precessional magnetometer cooling water temperature control system as claimed in claim 1, it is characterised in that the first PID controls Device processed, the water temperature in the primary cooling water circulatory system is controlled to the first preset temperature for being obtained from the central controller Instruction, and from the temperature sensor of each piping node in the primary cooling water circulatory system obtain current water temperature, Current hydraulic pressure is obtained from each pressure transmitter and at least one in current water-carrying capacity is obtained from each electromagnetic flowmeter, According to the difference of preset temperature and current water temperature, current hydraulic pressure and current water-carrying capacity in the primary cooling water circulatory system At least one of in, grown by the operation number of units and heat time that adjust the electric heater in the primary cooling water circulatory system At least one of in short, electromagnetism two-way valve folding size and the operation number of units and rotating speed of the first water pump, until by described in once The current lower water temperature of each piping node in cooling water recirculation system is extremely identical or close with first preset temperature.
- 3. proton precessional magnetometer cooling water temperature control system as claimed in claim 2, it is characterised in that also include and described one The secondary cooling water circulation system of secondary plate type heat exchanger connection, each pipeline being connected in the secondary cooling water circulation system Temperature sensor, pressure transmitter and the electromagnetic flowmeter of node, the second PID control dress being connected with the central controller Put, wherein,The secondary cooling water circulation system includes：Multiple cooling towers of parallel connection, the blower fan being arranged on each tower, the water inlet end of each cooling tower pass sequentially through electromagnetism two and led to Valve, the first three-way solenoid valve are connected with the secondary water side of a plate type heat exchanger, and first three-way solenoid valve passes through Electromagnetism two-way valve is connected with the secondary water inlet end of a plate type heat exchanger；Second enclosed storage tank, the water inlet end of the second enclosed storage tank pass through the water outlet of electromagnetism two-way valve and each cooling tower End connection；Multiple second water pumps in parallel, the water inlet end of each second water pump and water side are connected to electromagnetism two-way valve, described The common port of the electromagnetism two-way valve of the water inlet end of multiple second water pumps in parallel is connected with the water side of the second enclosed storage tank；Secondary plate type heat exchanger, the common port and described two of the electromagnetism two-way valve of the water side of multiple second water pumps in parallel The first water inlet end connection of secondary plate type heat exchanger, the first water side of the secondary plate type heat exchanger and a plate-type heat-exchange The secondary water inlet end connection of device, the second water inlet end of the secondary plate type heat exchanger are freezed by the second three-way solenoid valve and technique The water inlet end connection of water lines, the second water side of the secondary plate type heat exchanger and the water side of the technique chilled water pipeline Connection；The input of the second PID control device respectively with each piping node in the secondary cooling water circulation system Temperature sensor, pressure transmitter connect with electromagnetic flowmeter, and the output end of the second PID control device is respectively with described two The first three-way solenoid valve, the second three-way solenoid valve, each electromagnetism two-way valve, each second water pump in secondary cooling water recirculation system Connection, each cooling tower connect with each blower fan.
- 4. proton precessional magnetometer cooling water temperature control system as claimed in claim 3, it is characterised in that the 2nd PID controls Device processed, the water temperature in secondary cooling water circulation system is controlled to the second preset temperature for being obtained from the central controller Instruction, and from the temperature sensor of each piping node in the secondary cooling water circulation system obtain current water temperature, Current hydraulic pressure is obtained from each pressure transmitter and at least one in current water-carrying capacity is obtained from each electromagnetic flowmeter, According to the difference of preset temperature and current water temperature, current hydraulic pressure and current water-carrying capacity in the secondary cooling water circulation system In at least one of, by adjust each electromagnetism two-way valve in the secondary cooling water circulation system folding size, second At least one of in the operation number of units and rotating speed of the operation number of units and rotating speed of water pump, the operation number of units of cooling tower and blower fan, until By the current lower water temperature of each piping node in the secondary cooling water circulation system to first preset temperature It is identical or close.
- 5. proton precessional magnetometer cooling water temperature control system as claimed in claim 4, it is characterised in that the 2nd PID controls Device processed, for according to the difference of preset temperature and current water temperature in the primary cooling water circulatory system, current hydraulic pressure and At least one of in current water-carrying capacity, by adjusting opening for the second three-way solenoid valve in the secondary cooling water circulation system Size is closed, until by the current lower water temperature of each piping node in the secondary cooling water circulation system to described the One preset temperature is identical or close.
- 6. proton precessional magnetometer cooling water temperature control system as claimed in claim 5, it is characterised in that described once board-like to change Water side of hot device is connected with the temperature sensor；Temperature sensor of the input of the second PID control device also with a water side of a plate type heat exchanger Connection.
- 7. proton precessional magnetometer cooling water temperature control system as claimed in claim 6, it is characterised in that the 2nd PID controls Device processed, the water side that the temperature sensor for a water side according to a plate type heat exchanger is got Current Temperatures, the folding size of the first three-way solenoid valve is adjusted, until the Current Temperatures and described first of a water side Preset temperature is identical or close.
- 8. the proton precessional magnetometer cooling water temperature control system as described in any one of claim 1 to 7, it is characterised in that also wrap Include：The liquid level gauge being arranged at least one in the cooling tower, the first enclosed storage tank, the first enclosed storage tank；It is arranged at the PH detectors of each piping node once and/or in secondary cooling water circulation system；The electrical conductivity analysis being arranged at least one in the cooling tower, the first enclosed storage tank, the first enclosed storage tank Instrument.
- 9. a kind of proton precessional magnetometer cooling water temperature control method, it is characterised in that using such as any one of claim 1 to 8 institute The proton precessional magnetometer cooling water temperature control system stated, methods described include：First PID control device obtains from the central controller and controls the water temperature in the primary cooling water circulatory system to first The instruction of preset temperature；First PID control device obtains from the temperature sensor of each piping node in the primary cooling water circulatory system works as Preceding water temperature, obtain current hydraulic pressure from each pressure transmitter and obtained from each electromagnetic flowmeter in current water-carrying capacity At least one of；First PID control device is according to the difference of preset temperature and current water temperature in the primary cooling water circulatory system, current Hydraulic pressure and current water-carrying capacity at least one of, by adjusting the electric heater in the primary cooling water circulatory system Run in the operation number of units and rotating speed of number of units and heat time length, the folding size of electromagnetism two-way valve and the first water pump at least One, until by the current lower water temperature of each piping node in the primary cooling water circulatory system to described first Preset temperature is identical or close.
- 10. proton precessional magnetometer cooling water temperature control method as claimed in claim 9, it is characterised in that also include：The second PID control device from the central controller obtain by the water temperature in secondary cooling water circulation system control to The instruction of second preset temperature；The temperature sensor of the second PID control device from each piping node in the secondary cooling water circulation system obtains Current water temperature is taken, current hydraulic pressure is obtained from each pressure transmitter and current water-carrying capacity is obtained from each electromagnetic flowmeter At least one of in；The second PID control device according to the difference of preset temperature and current water temperature in the secondary cooling water circulation system, At least one of in current hydraulic pressure and current water-carrying capacity, by adjusting each electricity in the secondary cooling water circulation system The operation number of units of the folding size of magnetic two-way valve, the operation number of units of the second water pump and rotating speed, the operation number of units of cooling tower and blower fan With at least one in rotating speed, adjusted up to by the current water temperature of each piping node in the secondary cooling water circulation system Section is extremely identical or close with first preset temperature.
- 11. proton precessional magnetometer cooling water temperature control method as claimed in claim 10, it is characterised in that also include：The second PID control device according to the difference of preset temperature and current water temperature in the primary cooling water circulatory system, At least one of in current hydraulic pressure and current water-carrying capacity, by adjusting the second electricity in the secondary cooling water circulation system The folding size of magnetic triple valve, until the current water temperature of each piping node in the secondary cooling water circulation system is adjusted Section is extremely identical or close with first preset temperature.
- 12. proton precessional magnetometer cooling water temperature control method as claimed in claim 11, it is characterised in that also include：The second PID control device is got according to the temperature sensor of a water side of a plate type heat exchanger The Current Temperatures of water side, the folding size of the first three-way solenoid valve is adjusted, until the current temperature of a water side Degree is identical or close with first preset temperature.
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