CN114151842B - Automatic control system of water heat source central heating heat exchange station - Google Patents
Automatic control system of water heat source central heating heat exchange station Download PDFInfo
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- CN114151842B CN114151842B CN202111413351.1A CN202111413351A CN114151842B CN 114151842 B CN114151842 B CN 114151842B CN 202111413351 A CN202111413351 A CN 202111413351A CN 114151842 B CN114151842 B CN 114151842B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 186
- 238000010438 heat treatment Methods 0.000 title claims abstract description 20
- 238000009826 distribution Methods 0.000 claims description 7
- 230000001502 supplementing effect Effects 0.000 claims description 6
- 239000008399 tap water Substances 0.000 claims description 3
- 235000020679 tap water Nutrition 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 abstract description 8
- 238000007726 management method Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000004458 analytical method Methods 0.000 abstract description 2
- 238000005457 optimization Methods 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 abstract description 2
- 230000008439 repair process Effects 0.000 abstract description 2
- 238000003860 storage Methods 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 description 12
- 230000000694 effects Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000005259 measurement Methods 0.000 description 5
- 230000002411 adverse Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
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- 230000006872 improvement Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000005202 decontamination Methods 0.000 description 1
- 230000003588 decontaminative effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007363 regulatory process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/02—Hot-water central heating systems with forced circulation, e.g. by pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
- F24D19/1015—Arrangement or mounting of control or safety devices for water heating systems for central heating using a valve or valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
- F24D3/1058—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system disposition of pipes and pipe connections
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Abstract
The invention belongs to the technical field of clean energy utilization, and discloses an automatic control system of a water heat source central heating heat exchange station, which comprises a first heat exchange station system and a second heat exchange station system, wherein the first heat exchange station system and the second heat exchange station system comprise a pressure gauge, a thermometer, a meter, a first heat exchange water pump, a heat exchanger, a second heat exchange water pump, a pipeline control device and a first pipeline. According to the invention, the first heat exchange station system and the second heat exchange station system are arranged, and the accurate control and effective recovery of the heat of the whole water supply are realized through the pressure gauge, the thermometer and the heat exchanger, so that unified production command and scheduling of the managed regional heat exchange stations are realized; carrying out real-time monitoring and emergency repair scheduling on heat supply faults and accidents in a centralized way; the unified storage, management, analysis and maintenance of the operation data are carried out in a centralized way; the energy optimization and utilization of the heat exchange station are realized, the operation cost is greatly reduced, the system stability is enhanced, and the heat exchange performance is improved by 10%.
Description
Technical Field
The invention belongs to the technical field of clean energy utilization, and particularly relates to an automatic control system of a water heat source central heating heat exchange station.
Background
At present, the central heating system sends steam or hot water generated by a central heat source into a primary pipe network, then the heat of the steam or the hot water of the primary pipe network is transferred to a secondary pipe network through a heat exchanger of a heat exchange station, finally the heat is sent to a heat user through the secondary pipe network, and the heat user dissipates the heat into a room through an indoor heating facility, so that the indoor maintenance of a certain temperature in winter is ensured, and the living and production demands of people are met.
At present, the existing central heating system can only manually adjust the system output according to the feedback heat supply information of a user or manually adjust the energy output of the heat exchange station after the temperature of the user side is collected under the general condition, the feedback time is long, the heat exchange station output can not be monitored in real time and automatically adjusted, and therefore, the central heating heat exchange station has no effective automatic control system to meet the requirements of heat users.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides an automatic control system of a water heat source central heating heat exchange station.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a water heat source central heating heat exchange station automatic control system, includes first kind heat exchange station system and second kind heat exchange station system, first kind heat exchange station system and second kind heat exchange station system all include manometer, thermometer, strapping table, first heat transfer water pump, heat exchanger, second heat transfer water pump, pipeline controlling means, first pipeline, first kind heat exchange station system still includes control valve, manometer, thermometer and strapping table have been set gradually from left to right in the left end of first pipeline in the first kind heat exchange station system, the pipeline longitudinal distribution on strapping table right side and the upper and lower end on this longitudinal pipeline right side respectively fixed intercommunication control valve, two the right-hand member pipeline of control valve divide into two and all dock the upper end on the heat exchanger left side, the pipelines at the upper ends of the right sides of the four heat exchangers are longitudinally combined, the upper and lower parts of the pipelines are respectively provided with four groups of second heat exchange water pumps and three groups of second heat exchange water pumps, the right sides of the four groups of second heat exchange water pumps and the right sides of the three groups of second heat exchange water pumps are combined into longitudinal pipelines, the right sides of the upper and lower two longitudinal pipelines are respectively provided with two first pipelines, the left ends of the upper and lower ends of the first pipelines are fixedly communicated with a pipeline control device, the left ends of the second pipelines are sequentially provided with a pressure gauge and a thermometer from left to right, the pipelines at the right ends of the thermometer are longitudinally distributed and are divided into four groups of pipelines connected with the first heat exchange water pumps, the right sides of the four first heat exchange water pumps are combined into a single longitudinal pipeline, the upper and lower ends of the single longitudinal pipeline are fixedly connected with the lower ends of the left sides of the four heat exchangers, and the lower ends of the right sides of the four heat exchangers are connected with the second pipeline at the right ends;
The left end of a first pipeline in the second heat exchange station system is sequentially provided with a pressure gauge, a thermometer and a measuring meter from left to right, pipelines on the right side of the measuring meter are longitudinally distributed, the right end of the pipeline is divided into six parts and are all connected with a first heat exchange water pump, the right ends of the six first heat exchange water pumps are respectively communicated with the upper ends of the left sides of the heat exchangers, the upper ends of the six right sides of the heat exchangers are respectively fixedly connected with six second heat exchange water pumps, the right ends of the three second heat exchange water pumps are respectively communicated with a group of pipelines, the left ends of the second pipelines are sequentially provided with the pressure gauge and the thermometer from left to right, the second pipelines on the right ends of the thermometer are respectively communicated with the lower ends of the left sides of the heat exchangers, the lower ends of the right sides of the six heat exchangers are respectively combined into longitudinal single pipes, the right sides of the six heat exchangers are respectively communicated with the second pipelines, and the pipeline control device is communicated with the second pipelines on the two right ends;
According to the application, by arranging the automatic control system of the water heat source central heat supply heat exchange station, the automatic distribution and automatic adjustment of the heat exchange station to a plurality of user sides with different requirements are realized, 24-hour online monitoring of system operators in the past is replaced, manual regulation and control are realized, the automatic, standardized and lean management of the whole production operation process is realized, the working efficiency is improved, the manpower is saved, and the risks caused by personnel flowing and operation errors are reduced;
Real-time operation data and information monitoring from the heat exchange station to a plurality of user sides is realized through an automatic water heat source central heat supply heat exchange station adjusting system, so that safety accidents are accurately treated;
and the remote energy consumption monitoring is used for automatically adjusting the energy output of each heat exchange station according to actual conditions, so that the scientific management of the energy output of the heat exchange stations is realized, and the energy conservation and the efficiency improvement are realized.
As a preferable technical scheme of the invention, the first pipeline and the second pipeline at the left side in the first heat exchange station system are respectively connected with an energy resource station water return pipe and an energy resource station water supply pipe, the port of the first pipeline at the right end is sequentially connected with a business area water return pipe, a high area water return pipe and a low area water return pipe from top to bottom, and the second pipeline at the right end is sequentially connected with a business area water supply pipe, a high area water supply pipe and a low area water supply pipe from top to bottom.
As a preferable technical scheme of the invention, the first pipeline and the second pipeline at the left side in the second heat exchange station system are respectively connected with an energy station water supply pipe and an energy station water return pipe, the port of the first pipeline at the right end is sequentially connected with a low-area water supply pipe and a high-area water supply pipe from top to bottom, and the port of the second pipeline at the right end is sequentially connected with a low-area water return pipe and a high-area water return pipe from top to bottom.
As a preferable technical scheme of the invention, the pipeline control device consists of a decontamination device, a set of constant-pressure water supplementing device and a power distribution control cabinet, wherein the set of constant-pressure water supplementing device is externally connected with a tap water pipe.
As a preferable technical scheme of the invention, the pressure gauge and the thermometer are arranged in the right-end first pipeline and the second pipeline area in the first heat exchange station system and the second heat exchange station system.
As a preferable technical scheme of the invention, the upper and lower groups of heat exchangers and pipelines thereof in the first heat exchange station system form a high-area water pump running device and a low-area water pump running device; the upper end and the lower end of the second heat exchange station system form three groups of heat exchangers and pipelines thereof to form a low-area water pump running device and a high-area water pump running device.
Compared with the prior art, the invention has the following beneficial effects:
1. According to the invention, the first heat exchange station system and the second heat exchange station system are arranged, and the accurate control and effective recovery of the heat of the whole water supply are realized through the pressure gauge, the thermometer and the heat exchanger, so that unified production command and scheduling of the managed regional heat exchange stations are realized; carrying out real-time monitoring and emergency repair scheduling on heat supply faults and accidents in a centralized way; the unified storage, management, analysis and maintenance of the operation data are carried out in a centralized way; the energy optimization and utilization of the heat exchange station are realized, the operation cost is greatly reduced, the system stability is enhanced, and the heat exchange performance is improved by 10%.
Drawings
FIG. 1 is a schematic diagram of a first heat exchange station system according to the present invention;
Fig. 2 is a schematic diagram of a second heat exchange station system according to the present invention.
In the figure: 1. a pressure gauge; 2. a thermometer; 3. a meter; 4. a first heat exchange water pump; 5. a control valve; 6. a heat exchanger; 7. a second heat exchange water pump; 8. a pipeline control device; 9. a first pipe; 10. and a second pipe.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 2, the invention provides an automatic control system of a water heat source central heating heat exchange station, which comprises a first heat exchange station system and a second heat exchange station system, wherein the first heat exchange station system and the second heat exchange station system comprise a pressure gauge 1, a thermometer 2, a meter 3, a first heat exchange water pump 4, a heat exchanger 6, a second heat exchange water pump 7, a pipeline control device 8 and a first pipeline 9, the first heat exchange station system also comprises a control valve 5, the left end of the first pipeline 9 in the first heat exchange station system is sequentially provided with the pressure gauge 1, the thermometer 2 and the meter 3 from left to right, the pipeline on the right side of the meter 3 is longitudinally distributed, the upper end and the lower end on the right side of the longitudinal pipeline are respectively fixedly communicated with the control valve 5, the right end pipelines of the two control valves 5 are respectively and symmetrically butted at the upper end on the left side of the heat exchanger 6, the pipelines at the upper ends of the right sides of the four heat exchangers 6 are longitudinally combined, the upper and lower parts of the pipeline are respectively provided with four groups of second heat exchange water pumps 7 and three groups of second heat exchange water pumps 7, the right sides of the four groups of second heat exchange water pumps 7 and the right sides of the three groups of second heat exchange water pumps 7 are combined into longitudinal pipelines, the right sides of the upper and lower two longitudinal pipelines are respectively provided with two first pipelines 9, the left ends of the upper and lower first pipelines 9 are fixedly communicated with a pipeline control device 8, the left ends of the second pipelines 10 are sequentially provided with a pressure gauge 1 and a thermometer 2 from left to right, the pipelines at the right ends of the thermometer 2 are longitudinally distributed and are divided into four groups of pipelines connected with first heat exchange water pumps 4, the right side pipelines of the four first heat exchange water pumps 4 are combined into a single longitudinal pipeline, the upper and lower ends of the single longitudinal pipeline are fixedly connected to the lower ends of the left sides of the four heat exchangers 6, and the lower ends of the right sides of the four heat exchangers 6 are connected with the second pipelines 10 at the right ends;
In the second heat exchange station system, the left end of a first pipeline 9 is sequentially provided with a pressure gauge 1, a thermometer 2 and a measuring meter 3 from left to right, pipelines on the right side of the measuring meter 3 are longitudinally distributed, the right end of each pipeline is divided into six parts and are respectively connected with a first heat exchange water pump 4, the right ends of the six first heat exchange water pumps 4 are respectively communicated with the upper ends of the left sides of the heat exchangers 6, the upper ends of the right sides of the six heat exchangers 6 are respectively fixedly connected with six second heat exchange water pumps 7, the right side pipelines of the three second heat exchange water pumps 7 are combined into a group and are communicated with the first pipeline 9 on the right end, the left end of the second pipeline 10 is sequentially provided with the pressure gauge 1 and the thermometer 2 from left to right, the second pipeline 10 on the right end of the thermometer 2 is divided into six parts and is respectively communicated with the lower ends on the left sides of the heat exchangers 6, the lower ends on the right sides of the six heat exchangers 6 are respectively combined into a group, the right sides of each single pipe, each longitudinal right side of the six heat exchangers 6 is respectively communicated with a second pipeline 10, and a pipeline control device 8 is communicated with the two right side second pipelines 10;
According to the application, by arranging the automatic control system of the water heat source central heat supply heat exchange station, the automatic distribution and automatic adjustment of the heat exchange station to a plurality of user sides with different requirements are realized, 24-hour online monitoring of system operators in the past is replaced, manual regulation and control are realized, the automatic, standardized and lean management of the whole production operation process is realized, the working efficiency is improved, the manpower is saved, and the risks caused by personnel flowing and operation errors are reduced;
Real-time operation data and information monitoring from the heat exchange station to a plurality of user sides is realized through an automatic water heat source central heat supply heat exchange station adjusting system, so that safety accidents are accurately treated;
and the remote energy consumption monitoring is used for automatically adjusting the energy output of each heat exchange station according to actual conditions, so that the scientific management of the energy output of the heat exchange stations is realized, and the energy conservation and the efficiency improvement are realized.
The first pipeline 9 and the second pipeline 10 on the left side in the first heat exchange station system are respectively connected with an energy station water return pipe and an energy station water supply pipe, the ports of the first pipeline 9 on the right end are sequentially connected with a business area water return pipe, a high area water return pipe and a low area water return pipe from top to bottom, and the second pipeline 10 on the right end is sequentially connected with a business area water supply pipe, a high area water supply pipe and a low area water supply pipe from top to bottom.
The first pipeline 9 and the second pipeline 10 on the left side in the second heat exchange station system are respectively connected with an energy station water supply pipe and an energy station water return pipe, the port of the first pipeline 9 on the right end is sequentially connected with a low-area water supply pipe and a high-area water supply pipe from top to bottom, and the port of the second pipeline 10 on the right end is sequentially connected with the low-area water return pipe and the high-area water return pipe from top to bottom.
The pipeline control device 8 consists of a dirt removing device, a complete set of constant-pressure water supplementing device and a power distribution control cabinet, wherein the complete set of constant-pressure water supplementing device is externally connected with a tap water pipe.
Wherein, the areas of the right first pipeline 9 and the second pipeline 10 in the first heat exchange station system and the second heat exchange station system are respectively provided with a pressure gauge 1 and a thermometer 2.
Wherein, the upper and lower two groups of heat exchangers 6 and the pipeline thereof form a high-area water pump running device and a low-area water pump running device in the first heat exchange station system; three groups of heat exchangers 6 at the upper end and the lower end in the second heat exchange station system and pipelines thereof form a low-area water pump running device and a high-area water pump running device;
The main functions of the heat exchange station are as follows: the primary pipe network has higher temperature, and waste is caused by directly reaching a heat utilization unit; the cold water is changed into hot water suitable for heating temperature by using water with higher temperature through equipment of a heat exchange station and is conveyed to a heat utilization unit, so that energy sources can be saved, consumption is reduced, and electricity is saved; the air is pressurized and sent to the tail end of a user through a heat exchange side circulating pump, so that a better heating effect is realized; the overall safety of the system is ensured, the systems are independent, and the maintenance and the overhaul are convenient.
The following three aspects of the general principle, the control logic and the analog quantity adjustment of the automatic control system of the water heat source central heating heat exchange station are described:
general principles for control and regulation of first and second heat exchange station systems:
A. a plurality of water pumps which are operated in parallel synchronously regulate the frequency, so that the frequency is stable at the same value;
B. The frequency converter should set the lowest operating frequency, the upper software interface of the automatic control system should also have the lowest frequency limit;
C. The water pump has two operation modes of 'automatic' and 'manual', and when the upper computer of the automatic control system switches the operation modes, the operation frequency of the water pump cannot be suddenly changed;
D. the on-site control cabinet of the important equipment is provided with a remote/on-site knob, and when the position of the knob is displayed by the upper computer of the automatic control system and the upper computer of the automatic control system is in the on-site position, the upper computer of the automatic control system can not issue a control instruction;
E. the heat exchange station with the standby pump can be automatically started after the pump is operated to skip the pump, and human intervention is not needed;
F. The secondary circulating pump in the heat exchange station is regulated according to the pressure difference set value of the secondary network, the primary circulating pump in the heat exchange station is regulated according to the temperature set value of the secondary side, and the frequency of the water pump is preferentially regulated, so that the frequency is changed between 30 and 50 Hz; when the frequency does not meet the requirement, the water pump is switched on and off again, the starting frequency of the water pump is consistent with the frequency of the water pump which should be operated, the two-network differential pressure set value has a one-to-one correspondence with the pipe network flow, and is not suitable for frequent change.
2. Heat exchange station equipment control logic
According to the difference of heat supply condition, the heat exchange station has different arrangement modes, and control system also has different control logics, and this patent enumerates two kinds of different heat exchange station systems, namely first heat exchange station system and second heat exchange station system, according to whether there is corresponding relation between primary side circulating pump and secondary side circulating pump, describes control system control logic:
first type heat exchange station system equipment control logic
The outlet of the circulating pump of the first heat exchange station system is provided with a main pipe, the primary side circulating pump regulates the temperature of secondary side water supply, the secondary side circulating pump regulates the secondary side water supply through the pressure difference of water supply and return, and the pressure difference set value is not easy to change frequently; for the heat exchange station in the high-low area, an electric regulating valve is arranged before plate exchange in each area, one electric regulating valve is kept in a full-open state all the time in the regulating process, the primary side circulating pump regulates the secondary side water supply temperature, and the other non-full-open electric regulating valve regulates the secondary side water supply temperature corresponding to the plate exchange.
1. Two-net circulating pump
Start and allow:
A. the water pump is in a 'far' state;
B. The water pump has no fault;
the logic expression: a & B
Stop allowing:
Unconditional
Automatic start:
C. The running two-net circulating pump reaches 50Hz, the actual pressure difference value is lower than the set value, the duration is 1 minute, and the accumulated running time is the shortest in the non-running water pump;
The logic expression: a & B & C
Automatic stopping:
D. The running two-net circulating pump reaches 30Hz, the actual pressure difference value is higher than the set value, the running time lasts for 10 minutes, and the accumulated running time is longest in the running water pump;
2. primary side circulating pump
Start and allow:
A. the water pump is in a 'far' state;
B. The water pump has no fault;
the logic expression: a & B
Stop allowing:
Unconditional
Automatic start:
C. the running primary side circulating pump reaches 50Hz, the actual two-network temperature value is lower than the set value, and the accumulated running time of the equipment is the least;
The logic expression: a & B & C
Automatic stopping:
D. The once-running circulating pump reaches 30Hz, the actual two-network temperature value is higher than the set value, and the running time of the equipment is longest.
Second type heat exchange station system equipment start-stop logic
The primary side circulating pump and the secondary side circulating pump of the second heat exchange station system are in corresponding relation, and the primary side circulating pump is input and regulated according to the input condition and the load demand condition of the secondary side circulating pump; the secondary side circulating pump regulates the end flow through the pressure difference of the water supply and return, and the pressure difference set value is not easy to change frequently;
1. two-net circulating pump
Start and allow:
A. the water pump is in a 'far' state;
B. The water pump has no fault;
the logic expression: a & B
Stop allowing:
Unconditional
Automatic start:
C. The running two-net circulating pump reaches 50Hz, the actual pressure difference value is lower than a set value, and the accumulated running time is shortest in the non-running water pump;
D. The frequency of the running one-net circulating pump reaches 50Hz, the temperature of the secondary side water supply is lower than a set value, and the accumulated running time is shortest in the non-running water pump; (equivalent to adding plate changes)
The logic expression: a & B & (C|D)
Automatic stopping:
E. the running one-net circulating pump reaches 30Hz, the running two-net circulating pump reaches 30Hz, the temperature of the secondary side is higher than a set value, and the accumulated running time is longest in the running water pump;
F. The corresponding primary pump has stopped;
the logic expression: e|F
2. Primary side circulating pump
Start and allow:
A. the water pump is in a 'far' state;
B. The water pump has no fault;
the logic expression: a & B
Stop allowing:
Unconditional
Automatic start:
C. the corresponding secondary pump is started;
The logic expression: a & B & C
Automatic stopping:
D. the corresponding secondary pump has stopped;
The logic expression: D.
3. Analog quantity adjustment
1. Secondary side water pump of first heat exchange station system
The pressure difference set value of the secondary side water supply and return of the heat exchange station is P1, and the frequency of the water pump is changed to enable the pressure difference of the secondary side to reach P1.
2. Primary side water pump of first heat exchange station system
For the heat exchange station divided into high and low areas, firstly judging the unit with the least adverse heat exchange effect, wherein the corresponding regulating valve of the unit is always in a full-open state, and the primary side water pump takes the secondary side water supply temperature of the unit with the least adverse heat exchange effect as a regulating target;
The method for judging the unit with the least adverse heat exchange effect comprises the following steps: setting a target value of the secondary side water supply temperature of the high-area unit as T1, setting an actual measurement value as T2, and setting deviation T3=T2-T1 of the actual measurement value and the set value; setting a target value of the secondary side water supply temperature of the low-area unit as T4, setting an actual measurement value as T5, and setting deviation T6=T5-T4 of the actual measurement value and the set value; starting secondary side circulating pumps of the high-area unit and the low-area unit to enable the actual measurement value of the secondary side differential pressure to reach a set value; and opening primary side regulating valves of the high-area unit and the low-area unit to 100%, starting the primary side circulating pump to maintain the frequency at 30Hz for 10 minutes, wherein if T3 is more than T6, the low-area unit is the unit with the least favorable heat exchange effect, and if T6 is more than T3, the high-area unit is the unit with the least favorable heat exchange effect.
3. First kind heat exchange station system regulating valve
For the heat exchange stations in the high-low areas, the secondary side water supply temperature of the unit with the least adverse heat exchange effect is adjusted by the primary pump in a variable frequency mode, and the secondary side water supply temperature of the other units is adjusted by the opening of the regulating valve.
4. Secondary side water pump of second type heat exchange station system
The pressure difference set value of the secondary side water supply and return of the heat exchange station is P1, and the frequency of the water pump is changed to enable the pressure difference of the secondary side to reach P1.
5. Primary side water pump of second type heat exchange station system
The target value of the secondary side water supply temperature is set as T1, and the frequency of the primary side water pump is changed to enable the secondary side water supply temperature to reach T1.
Description of first heat exchange station system operation: the left end second pipeline 10 is internally filled with high-grade heat energy water body of an energy station, is guided and conveyed by four first heat exchange water pumps 4, enters the interior of the heat exchanger 6, and is discharged from the right end of the second pipeline 10 after heat exchange treatment; meanwhile, the low-grade heat energy water body is injected into the second pipeline 10 at the right end, and can be quantitatively supplemented by the pipeline control device 8 according to the situation, then the water body enters the heat exchanger 6 for heat exchange treatment with the help of the second heat exchange water pump 7, at the moment, the high-grade water body in the second pipeline 10 and the low-grade water body in the first pipeline 9 are combined for heat exchange in the heat exchanger 6, and then the low-grade water body is discharged from the left end of the first pipeline 9;
Description of the second heat exchange station system operation: the high-grade heat energy water body of the energy station is injected into the first pipeline 9 at the left end, is guided by the first heat exchange water pump 4 to be discharged into the heat exchanger 6 for heat exchange, and is guided by the second heat exchange water pump 7 to be discharged from the right end of the first pipeline 9; meanwhile, the low-grade heat energy water body is injected into the second pipeline 10 at the right end, and can be quantitatively supplemented by the pipeline control device 8 according to the situation, then the water body enters the heat exchanger 6 for heat exchange, at the moment, the high-grade water body in the first pipeline 9 and the low-grade water body in the second pipeline 10 exchange heat in the heat exchanger 6 in a combined way, and then the low-grade water body is discharged from the left end of the second pipeline 10.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a water heat source central heating heat exchange station automatic control system, includes first kind heat exchange station system and second kind heat exchange station system, first kind heat exchange station system and second kind heat exchange station system are all including manometer (1), thermometer (2), strapping table (3), first heat exchange water pump (4), heat exchanger (6), second heat exchange water pump (7), pipeline controlling means (8), first pipeline (9), first kind heat exchange station system is still including control valve (5), its characterized in that: the left end of a first pipeline (9) in the first heat exchange station system is sequentially provided with a pressure gauge (1), a thermometer (2) and a meter (3) from left to right, pipelines on the right side of the meter (3) are longitudinally distributed, the upper end and the lower end of the right side of the longitudinal pipeline are respectively fixedly communicated with a control valve (5), the right end pipelines of two control valves (5) are divided into two which are respectively butted with the upper end on the left side of a heat exchanger (6), the pipelines on the upper right end of four heat exchangers (6) are longitudinally combined, the upper and the lower parts of the pipelines on the right side are respectively provided with four groups of second heat exchange water pumps (7) and three groups of second heat exchange water pumps (7), the right sides of the four groups of second heat exchange water pumps (7) and the three groups of second heat exchange water pumps (7) are combined into longitudinal pipelines, two pipelines (9) are respectively arranged on the right sides of the upper and lower longitudinal pipelines, the left ends of the upper and lower ends of the first pipelines (9) are fixedly communicated with a pipeline control device (8), the left ends of the second pipelines (10) are sequentially provided with a pressure gauge (1) and a thermometer (2) from left to right, the pipelines on the right ends of the thermometers (2) are longitudinally distributed and are divided into four pipelines which are connected with first heat exchange water pumps (4), the right pipelines of the four first heat exchange water pumps (4) are combined into a single longitudinal pipeline, the upper and lower ends of the single longitudinal pipeline are fixedly connected with the lower ends of the left sides of the four heat exchangers (6), the lower ends of the right sides of the four heat exchangers (6) are connected with a second pipeline (10) at the right end in a pipeline manner;
The left end of first pipeline (9) has set gradually manometer (1), thermometer (2) and strapping table (3) from a left side to the right side in the second kind heat exchange station system, the pipeline longitudinal distribution on strapping table (3) right side and its right-hand member divide into six all to be connected with first heat exchange water pump (4), six first heat exchange water pump (4) right-hand member respectively with heat exchanger (6) left upper end intercommunication, six heat exchanger (6) right side upper end respectively with six second heat exchange water pump (7) fixed connection, three second heat exchange water pump (7) right side pipeline just is a set of and its first pipeline (9) with the right-hand member communicate, the left end of second pipeline (10) from a left side to the right side has set gradually manometer (1), thermometer (2), the second pipeline (10) of thermometer (2) right-hand member divide into six and leave the lower extreme in single tube heat exchanger (6) left side respectively, six heat exchanger (6) right side upper end respectively with six second heat exchange water pump (7) right side pipeline just is a set of two longitudinal direction pipeline (10) and each, two longitudinal pipeline (10) are linked together.
2. An automatic control system for a water heat source central heating heat exchange station according to claim 1, wherein: the left side in the first heat exchange station system is respectively connected with an energy station water return pipe and an energy station water supply pipe through a first pipeline (9) and a second pipeline (10), the right end of the first pipeline (9) is sequentially connected with a commercial area water return pipe, a high area water return pipe and a low area water return pipe from top to bottom, and the right end of the second pipeline (10) is sequentially connected with a commercial area water supply pipe, a high area water supply pipe and a low area water supply pipe from top to bottom.
3. An automatic control system for a water heat source central heating heat exchange station according to claim 1, wherein: the left side in the second heat exchange station system is respectively connected with an energy station water supply pipe and an energy station water return pipe through a first pipeline (9) and a second pipeline (10), the right end is sequentially connected with a low-area water supply pipe and a high-area water supply pipe from top to bottom through a first pipeline (9) port, and the right end is sequentially connected with a low-area water return pipe and a high-area water return pipe from top to bottom through a second pipeline (10) port.
4. An automatic control system for a water heat source central heating heat exchange station according to claim 1, wherein: the pipeline control device (8) consists of a dirt removing device, a set of constant-pressure water supplementing device and a power distribution control cabinet, wherein the set of constant-pressure water supplementing device is externally connected with a tap water pipe.
5. An automatic control system for a water heat source central heating heat exchange station according to claim 1, wherein: the areas of the right-end first pipeline (9) and the right-end second pipeline (10) in the first heat exchange station system and the second heat exchange station system are respectively provided with a pressure gauge (1) and a thermometer (2).
6. An automatic control system for a water heat source central heating heat exchange station according to claim 1, wherein: the upper end and the lower end of the first heat exchange station system are provided with two groups of heat exchangers (6) and pipelines thereof to form a high-area water pump running device and a low-area water pump running device; the upper end and the lower end of the heat exchanger (6) and the pipeline thereof form a low-area water pump running device and a high-area water pump running device in the second heat exchange station system.
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| CN206846900U (en) * | 2017-06-23 | 2018-01-05 | 中节能城市节能研究院有限公司 | A kind of heat exchange station subregion energy supplying system of energy-saving self-controlling |
| CN213577745U (en) * | 2020-10-26 | 2021-06-29 | 华北电力大学（保定） | Automatic control system of central heating heat exchange station |
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| CN206846900U (en) * | 2017-06-23 | 2018-01-05 | 中节能城市节能研究院有限公司 | A kind of heat exchange station subregion energy supplying system of energy-saving self-controlling |
| CN213577745U (en) * | 2020-10-26 | 2021-06-29 | 华北电力大学（保定） | Automatic control system of central heating heat exchange station |
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Inventor after: Shu Yangkui Inventor after: Li Qiang Inventor after: Liu Hui Inventor after: Xiao Ya Inventor after: Wang Fazhong Inventor after: Zhang Xiaolin Inventor before: Shu Yangkui Inventor before: Li Qiang Inventor before: Liu Hui Inventor before: Xiao Ya Inventor before: Wang Fazhong Inventor before: Zhang Xiaolin |