CN114151850A - Heating medium system capable of being debugged in a split-ranging manner and debugging method - Google Patents
Heating medium system capable of being debugged in a split-ranging manner and debugging method Download PDFInfo
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- CN114151850A CN114151850A CN202111401969.6A CN202111401969A CN114151850A CN 114151850 A CN114151850 A CN 114151850A CN 202111401969 A CN202111401969 A CN 202111401969A CN 114151850 A CN114151850 A CN 114151850A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 110
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000009434 installation Methods 0.000 claims description 4
- 230000020335 dealkylation Effects 0.000 claims description 2
- 238000006900 dealkylation reaction Methods 0.000 claims description 2
- 230000018044 dehydration Effects 0.000 claims description 2
- 238000006297 dehydration reaction Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 23
- 239000007788 liquid Substances 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000004215 Carbon black (E152) Substances 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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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
- F24D19/0002—Means for connecting central heating radiators to circulation pipes
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/40—Fluid line arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B45/00—Arrangements for charging or discharging refrigerant
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- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
A heating medium system capable of being debugged in a distributed mode and a debugging method comprise the following steps: the device comprises a filling pump (B), an expansion tank (A), a filling pipeline, an expansion pipeline, a first heat medium furnace (C), a second heat medium furnace (E), a first circulating pump (D), a second circulating pump (F), a first oil-gas separator (G) and a second oil-gas separator (H). The invention does not need to provide an independent expansion tank for the newly added heat unit under the condition of not influencing the normal operation of the heat medium system of the existing heat unit, and completes the heat medium filling and the heat medium system debugging of the newly added heat medium system by utilizing the expansion tank of the original heat medium system.
Description
Technical Field
The invention belongs to the technical field of a heat medium furnace and a heat medium heating system, and particularly relates to a heat medium system capable of being debugged in a split-pass mode and a debugging method.
Background
The heat medium system is a heating system for providing stable heat for the heat using unit. For a heating medium system of a newly added user unit, two existing debugging systems and methods are available:
1. the existing heat medium system needs to be stopped, the existing heat medium system and the new heat medium adding system are combined into a whole, and heat medium adding and system debugging are carried out again as a whole;
2. and adding an independent expansion tank in the newly added heat medium system to finish the heat medium filling and system debugging of the newly added heat medium system.
Disclosure of Invention
The technical problem solved by the invention is as follows: the defects of the prior art are overcome, the heating medium system capable of being debugged in a split-pass mode and the debugging method are provided, under the condition that the normal operation of the existing heating unit heating medium system is not influenced, an independent expansion tank does not need to be provided for a newly-added heating unit, and heating medium filling and heating medium system debugging of the newly-added heating medium system are completed by using the expansion tank of the original heating medium system.
The technical solution of the invention is as follows:
a heating medium system capable of being adjusted in a programmed manner, comprising: the system comprises a filling pump, an expansion tank, a filling pipeline, an expansion pipeline, a first heat medium furnace, a second heat medium furnace, a first circulating pump, a second circulating pump, a first oil-gas separator and a second oil-gas separator;
the outlet of the filling pump is connected with a filling pipeline, and the filling pipeline is connected with an expansion pipeline;
the oil-gas separator is arranged at a first heat unit heat medium outlet, the first circulating pump is arranged at the first oil-gas separator outlet, the first heat medium furnace is arranged at the first circulating pump outlet, and the first heat unit is connected with the first heat medium furnace heat medium outlet;
the second oil-gas separator is connected with a second heat unit heat medium outlet, the second circulating pump is connected with the second oil-gas separator outlet, the second heat medium furnace heat medium inlet is connected with the second circulating pump outlet, and the second heat medium furnace heat medium outlet is connected with the first heat unit and the second heat unit heat medium inlet;
the expansion tank is connected with gas phase outlets of the first oil-gas separator and the second oil-gas separator through expansion pipelines.
Optionally, the connection position of the filling pipeline and the expansion pipeline is more than 1.5 meters higher than the highest point of each thermal unit heating medium system pipeline.
Optionally, the installation height of the expansion tank is more than 1.5 meters higher than the highest point of all heat unit heat medium systems in the plant area.
Alternatively, when only the first heat unit is operated, the first heat medium furnace and the second heat medium furnace are used in parallel, both of which are capable of supplying heat to the first heat unit.
Optionally, when the second thermal unit is put into service, the first thermal medium furnace is used for the first thermal unit and the second thermal medium furnace is used for the second thermal unit in the previous heating medium filling and heating medium commissioning phase.
Optionally, when the second heat unit is debugged and in the normal operation stage, the first heat medium furnace and the second heat medium furnace are used in parallel, and can provide heat supply for the first heat unit or the second heat unit.
Optionally, the regulated volume of the expansion tank is not less than 1.3 times of the volume increased by the heating expansion when the heating medium in the system is heated from the ambient temperature to the maximum working temperature; the heat medium in the system refers to the total heat medium amount of all heat unit heat medium systems in a plant area.
Optionally, the expansion line for the first thermal unit is connected to the bottom of the expansion tank; and an expansion pipeline used by the second heat unit is communicated to the inside of the expansion tank, and the height of the expansion pipeline exceeds 100mm of an overflow pipeline of the expansion tank, so that the expansion pipeline is positioned in a gas phase space of the expansion tank in the second heat unit heating medium debugging stage.
Optionally, the caliber of the expansion pipe corresponding to the first heat unit is determined according to the total heat load.
Optionally, the caliber of the expansion pipe corresponding to the second heat unit is determined according to the heat load of the second heat unit.
A heating medium system debugging method capable of being debugged in a split-ranging mode comprises the following steps:
1) closing the second heat medium furnace, closing the second circulating pump, closing a seventh valve of a heat medium outlet of the second heat medium furnace, closing a fourth valve of an oil return header pipe, and opening a sixth valve to enable the first heat medium furnace to independently provide heat for the first heat unit;
2) opening an eighth valve of a heat medium outlet of the second heat medium furnace, opening a fifth valve of the oil return header pipe, and closing a ninth valve and a tenth valve between the first heat unit and the second heat unit to enable the second heat medium furnace to independently provide heat for the second heat unit;
3) closing the second valve of the heating medium filling pipeline, opening the first valve of the filling pipeline, closing the third valve of the expansion pipeline, starting the filling pump, and filling the heating medium for the newly-added second heat unit;
4) after the second heat unit heat medium system is filled, the filling pump is closed;
5) starting a second circulating pump to circulate the heating medium in the pipeline of the heating medium system of the second heat unit;
6) starting the second heat medium furnace, opening the third valve of the expansion pipeline, closing the first valve of the filling pipeline, heating the heat medium in the heat medium system of the second heat unit, and completing dehydration and hydrocarbon removal of the heat medium in the heat medium system of the second heat unit through the expansion pipe and the expansion tank;
7) and (3) heating the second heat unit heating medium to the temperature required by the user device, closing an eighth valve of a second heating medium furnace heating medium outlet, closing a fifth valve of an oil return header pipe, closing a third valve of an expansion pipeline, opening a seventh valve of a second heating medium furnace heating medium outlet, opening a fourth valve of the oil return header pipe, opening a ninth valve and a tenth valve between the first heat unit and the second heat unit, and opening a sixth valve, so that the first heating medium furnace and the second heating medium furnace are used in parallel, heat is provided for the first heat unit and the second heat unit, and the split-pass debugging of the heating medium system is completed.
Compared with the prior art, the invention has the advantages that:
the invention utilizes the expansion tank of the existing heat medium system, can complete the heating medium filling and system debugging of the newly added heat medium system without influencing the normal operation of the existing heat medium system and adding an expansion tank, and finally completes the heat medium system synchronization of different heat using units. The invention does not need the existing heat unit to stop production, ensures the productivity of users, does not need to newly add an expansion tank and a corresponding pipeline, reduces the early investment cost and also saves the space cost.
Drawings
Fig. 1 is a schematic process flow diagram of a heating medium system capable of being debugged in a split manner, which shows the process flow of the system comprising main equipment and the installation position relationship among the main equipment.
The components shown in the above figures are: A. the system comprises a heat medium system expansion tank, a filling pump B, a first heat medium furnace C, a first circulating pump D, a second heat medium furnace E, a second circulating pump F and heat medium system valves 1-10.
Detailed Description
The invention relates to a heating medium system capable of being debugged in a split-range manner, which adopts a common expansion tank, an independent filling pipeline and an expansion pipeline to realize the split-range debugging of the heating medium system; the system comprises at least one heat medium filling pump, a heat medium expansion tank and corresponding filling pipelines and expansion pipelines.
In the process of building or expanding a heat unit project for a factory, the shared expansion tank and an independent expansion pipe of a heat medium system are used for realizing the split-range debugging of the heat unit heat medium system.
In the process of building or expanding the thermal unit engineering for the plant area newly, the operated thermal unit does not need to be shut down, the newly increased thermal unit does not need to be additionally provided with an expansion pipe, and the original thermal medium system expansion tank is utilized to realize the split debugging of the thermal unit thermal medium system.
After the heating medium system is debugged in different ranges, the heat medium systems of the heat using units can be connected in parallel through the valves among the heat using units.
The regulated volume of the expansion tank is not less than 1.3 times of the volume increased by the heating expansion when the heating medium in the system is heated from the ambient temperature to the maximum working temperature. The term "system heating medium" refers to the total amount of heating medium in all thermal unit heating medium systems in a plant.
The expansion pipe of the expansion tank is provided with a plurality of expansion pipelines according to different production time of the heat unit. The expansion pipe is connected with the gas-liquid separator gas-phase outlet of each heat using unit.
The expansion pipeline used by the second heat unit 2 is communicated to the inside of the expansion tank, and the height of the expansion pipeline exceeds 100mm of the overflow pipeline of the expansion tank, so that the heating medium debugging stage of the second heat unit 2 is ensured, and the expansion pipeline is positioned in the gas phase space of the expansion tank.
The intersection of the filling pipeline and the expansion pipe is positioned above 1.5 meters of the highest point of the heat unit heat medium system.
The system is implemented in conjunction with a hot media furnace system that provides and distributes heat to the system.
The main technical scheme is that all heat unit heat medium systems in a plant area share one heat medium expansion tank, the plant area heat medium systems can be debugged in a split-range mode according to different production time of heat units, and corresponding expansion pipelines and heat medium filling systems are reserved on the expansion tanks. When a certain heat unit needs to be put into production, independent heating medium filling and system debugging can be carried out on the heating medium system of the heat unit without influencing the operation of other heat unit heating medium systems, and after the debugging of the heat unit heating medium system is completed, the grid-connected operation of the heat unit and other heat units in use can be realized.
The technical scheme of the invention is realized by linkage operation of a heat medium system which can be debugged in a split-range mode and a heat medium furnace system which supplies heat for the heat medium system.
The invention relates to a heating medium system capable of being debugged in a split-range mode, which can perform split-range heating medium filling on heating medium systems of different heat using units and perform split-range debugging on heating medium heating by using a heating medium furnace. The system utilizes the filling pump and the switches of different valves on the filling pipeline to fill the heating medium pipelines of different heat using units with heating media, and utilizes the expansion pipeline corresponding to the heating medium system of the heat using unit on the public expansion tank to debug the heating medium systems of the different heat using units. This heat medium system includes: a heat medium filling pump B, a heat medium expansion tank a and corresponding filling lines and expansion lines, see fig. 1. The heat medium furnace system matched with the system comprises: at least two heat medium furnaces C/E, two sets of circulating pumps D/F, two sets of oil-gas separators G/H and corresponding heat medium pipelines, and a first heat unit 1 and a second heat unit 2 are shown in figure 1.
The connection relation of the devices in the heat medium system is as follows: the outlet of the filling pump B is connected with a filling pipeline, the filling pipeline is connected with an expansion pipeline, and the joint of the filling pipeline and the expansion pipeline is more than 1.5 meters higher than the highest point of each heat unit heat medium system pipeline; the installation height of the expansion tank A is more than 1.5 meters higher than the highest point of all heat unit heat medium systems in the plant;
the oil-gas separator G is arranged at a heat medium outlet of the first heat unit 1, the first circulating pump D is arranged at an outlet of the first oil-gas separator G, the first heat medium furnace C is arranged at an outlet of the first circulating pump D, and the first heat unit 1 is connected with the heat medium outlet of the first heat medium furnace C;
the second oil-gas separator H is connected with a second heat unit 2 heat medium outlet, the second oil-gas separator H of the second circulating pump F is connected with an outlet, a second heat medium furnace E heat medium inlet is connected with a second circulating pump F outlet, and a second heat medium furnace E heat medium outlet is connected with the first heat unit 1 and the second heat unit 2 heat medium inlet. The expansion tank A is connected with a gas phase outlet of the oil-gas separator G/H through an expansion pipeline.
When only the first heat unit 1 operates in a plant area, the first heat medium furnace C and the second heat medium furnace E are used in parallel, and both can provide heat for the first heat unit 1; when the second heat unit 2 is put into use, in the previous stage of heat medium filling and heat medium debugging, the first heat medium furnace C is used for the first heat unit 1, and the second heat medium furnace E is used for debugging the second heat unit 2; when the second heat unit 2 is debugged and is in a normal operation stage, the first heat medium furnace C and the second heat medium furnace E are used in parallel and can provide heat supply for the first heat unit 1 or the second heat unit 2.
The heat medium adopted by the heat medium system is heat conduction oil, and the heat medium used by the heat unit heat medium system for running at present is consistent with the heat medium used by the newly-added heat unit heat medium system.
Selecting the volume of the expansion tank: the heating medium pipeline of the system shares an expansion tank, and the regulated volume of the expansion tank is not less than 1.3 times of the volume increased by two times of heating expansion when the heating medium in the system is heated from the ambient temperature to the highest working temperature. The term "system heating medium" refers to the total amount of heating medium in all thermal unit heating medium systems in a plant.
Setting of an expansion pipeline: the first heat unit 1 and the second heat unit 2 are put into operation at different time, and two expansion pipelines are arranged. The expansion line for the first thermal unit 1 is connected to the bottom of the expansion tank; the expansion pipeline used by the second heat unit 2 is communicated to the inside of the expansion tank, and the height of the expansion pipeline exceeds 100mm of the overflow pipeline of the expansion tank, so that the heating medium debugging stage of the second heat unit 2 is ensured, and the expansion pipeline is positioned in the gas phase space of the expansion tank.
Selecting the caliber of the expansion pipeline: the expansion pipeline caliber is determined according to the heat load of the heat using unit. The caliber of the expansion pipe of the first heat unit 1 is determined according to the total heat load; the caliber of the expansion pipe of the second thermal unit 2 is determined according to the thermal load of the second thermal unit 2.
Selecting the lift of a filling pump: the filling pump head of the system is determined according to the height of the expansion pipe and the pressure before the circulating pump.
The invention relates to a process flow and a specific implementation method of a heating medium system capable of being debugged in a split-ranging way, which comprises the following steps:
preparation work:
first heat unit 1 has completed commissioning of the heat medium system and is operating normally. The oil supply manifold valve 9 and the oil return manifold valve 10 between the first thermal unit 1 and the second thermal unit 2 are in a closed state.
And (4) stopping the nitrogen sealing system of the expansion tank, and opening a valve of an emptying pipeline of the expansion tank to communicate the gas phase space of the expansion tank with the atmosphere.
The expansion tank liquid level device shows normal. The liquid level of the expansion tank is in a normal range and is higher than the low alarm value of the expansion tank, and the liquid level is maintained to be the best between 30 and 50 percent.
The first heat medium furnace C and the second heat medium furnace E are both normally used, and the first heat medium furnace C can satisfy the heat demand of the first heat unit 1.
It is determined that the second heat unit 2 heat medium system is operational.
An oil return main pipe valve 4 between the second circulating pump F and the first circulating pump D is closed, a heat medium outlet valve 7 of the second heat medium furnace E is closed, and a valve 8 is opened.
At the moment, the first circulating pump D, the first heat medium furnace C and the first heat unit 1 form a heat medium system; the second circulating pump F, the second heat medium furnace E, the gas-liquid separator H and the second heat unit 2 form an independent heat medium system loop.
The second thermal unit 2 expansion tube valve 3 is open, the fill line valve 1 is open and the fill line valve 2 is closed.
Heating medium filling:
and starting the filling pump B, and injecting new heat conducting oil into the heat medium system pipeline of the second heat unit 2. The approximate filling time can be calculated from the heat medium system pipe arrangement of the second heat unit 2 and the flow rate of the filling pump B. During the filling process, the expansion tank level is observed, and when the expansion tank level rises, it indicates that the first filling of the heating medium system of the second heat unit 2 is completed.
Starting a second circulating pump F, and performing cold circulation on a heat medium system; in the cold circulation process, the filling pump protects the filling state until the liquid level of the expansion tank rises again, which indicates that the pipeline filling of the heating medium system of the second heat unit 2 is finished, the filling pump B stops, and the filling pipeline valve 1 is closed.
Debugging a heating medium:
and debugging the heating medium system of the second heat unit 2 after the second circulating pump F continuously operates for 24 hours.
And igniting the second heat medium furnace E, controlling the heat load of the second heat medium furnace E according to the temperature rise curve of the heat conduction oil, and stabilizing the temperature rise rate. The temperature of the heating medium rises to about 110 ℃, the heating medium starts to dehydrate, the moisture in the heating medium of the second heat unit 2 is gasified, and the heating medium is discharged to the gas phase space of the expansion tank through the expansion pipe when passing through the gas-liquid separator H, and then discharged into the atmosphere through the expansion pipe emptying pipe. The temperature of the heating medium rises to about 220 ℃, the heating medium begins to remove hydrocarbon, hydrocarbon components in the heating medium are gasified, and when the heating medium passes through the gas-liquid separator H, the heating medium is discharged to the gas phase space of the expansion tank through the expansion pipe, and then is discharged to the atmosphere through the expansion pipe vent pipe.
In the process of dehydrating and dealkylating the heating medium, when the pressure at the inlet of the second circulating pump F is reduced or fluctuates, the filling pipeline valve 1 is opened, the filling pump B is started, and oil is supplemented to the heating medium system of the second heat unit 2. When the liquid level of the expansion tank rises, the oil supply is stopped, the filling pipeline valve 1 is closed, and the filling pump B is closed.
And no gas is discharged from an exhaust pipeline of the expansion tank, the heat medium system of the second heat unit 2 runs stably, the pressure of the inlet of the second circulating pump F is stable and does not fluctuate, and the dealkylation of the second heat unit 2 is finished.
And (4) according to the heating medium temperature rise curve, heating the heating medium to the temperature required by the second heat unit 2, and debugging the heating medium system.
And (3) heat medium user grid connection:
the temperatures of the heating media needed by the first heat unit 1 and the second heat unit 2 are the same, and after the debugging of the heating media system of the second heat unit 2 is completed, the heating media system interconnection of the first heat unit 1 and the second heat unit 2 can be carried out.
A heat medium outlet valve 8 of the second heat medium furnace E is closed, and a valve 7 is opened; an oil return main pipe valve 5 of the second heat unit 2 is closed, and an oil return main pipe valve 4 is opened; the oil supply manifold valve 9 and the oil return manifold valve 10 between the first thermal unit 1 and the second thermal unit 2 are opened.
And (3) closing an expansion pipe valve 3 of the second thermal unit 2, and using the nitrogen sealing system of the expansion tank.
The first thermal unit 1 and the second thermal unit 2 are used in parallel, sharing the expansion pipe 1 and the expansion tank.
The above embodiments are given for the purpose of illustrating the invention and its practical application and are not intended to limit the invention in any way, and one skilled in the art may make modifications and variations, such as modifying the number of heat units used, modifying the number of heat medium furnaces, modifying the number of heat medium furnace circulation pumps, modifying the type of valves, adding valve bypasses, etc., according to the above techniques and methods, which are considered equivalent embodiments without departing from the scope of the present invention.
Those skilled in the art will appreciate that those matters not described in detail in the present specification are well known in the art.
Claims (11)
1. A heating medium system capable of being debugged in a graduate way is characterized in that: the method comprises the following steps: the system comprises a filling pump (B), an expansion tank (A), a filling pipeline, an expansion pipeline, a first heat medium furnace (C), a second heat medium furnace (E), a first circulating pump (D), a second circulating pump (F), a first oil-gas separator (G) and a second oil-gas separator (H);
the outlet of the filling pump (B) is connected with a filling pipeline which is connected with an expansion pipeline;
the oil-gas separator (G) is arranged at a heat medium outlet of the first heat unit (1), the first circulating pump (D) is arranged at an outlet of the first oil-gas separator (G), the first heat medium furnace (C) is arranged at an outlet of the first circulating pump (D), and the first heat unit (1) is connected with the heat medium outlet of the first heat medium furnace (C);
the second oil-gas separator (H) is connected with a heat medium outlet of the second heat unit (2), the second circulating pump (F) is connected with an outlet of the second oil-gas separator (H), a heat medium inlet of the second heat medium furnace (E) is connected with an outlet of the second circulating pump (F), and a heat medium outlet of the second heat medium furnace (E) is connected with the first heat unit (1) and the heat medium inlet of the second heat unit (2);
the expansion tank (A) is connected with gas phase outlets of the first oil-gas separator (G) and the second oil-gas separator (H) through expansion pipelines.
2. A heating medium system capable of being adjusted in a split manner according to claim 1, wherein: the joint of the filling pipeline and the expansion pipeline is more than 1.5 meters higher than the highest point of each heat unit heat medium system pipeline.
3. A heating medium system capable of being adjusted in a split manner according to claim 2, wherein: the installation height of the expansion tank (A) is more than 1.5 meters higher than the highest point of all heat unit heat medium systems in the plant.
4. A heating medium system capable of being adjusted in a split manner according to claim 3, wherein: when only the first heat unit (1) is operated, the first heat medium furnace (C) and the second heat medium furnace (E) are used in parallel, and both of them can supply heat to the first heat unit (1).
5. A heating medium system capable of being adjusted in a split manner according to claim 3, wherein: when the second heat unit (2) is put into operation, in the previous stage of heat medium filling and heat medium debugging, the first heat medium furnace (C) is used for the first heat unit (1), and the second heat medium furnace (E) is used for debugging the second heat unit (2).
6. A heating medium system capable of being adjusted in a split manner according to claim 3, wherein: when the second heat unit (2) is debugged and used in a normal operation stage, the first heat medium furnace (C) and the second heat medium furnace (E) are used in parallel, and both can provide heat supply for the first heat unit (1) or the second heat unit (2).
7. A heating medium system capable of being adjusted in a split manner according to any one of claims 4-6, characterized in that: the adjusting volume of the expansion tank (A) is not less than 1.3 times of the volume increased by the heating expansion when the heating medium in the system is heated from the ambient temperature to the maximum working temperature; the heat medium in the system refers to the total heat medium amount of all heat unit heat medium systems in a plant area.
8. A heating medium system capable of being adjusted in a split manner according to claim 7, wherein: the expansion line for the first thermal unit (1) is connected to the bottom of the expansion tank; an expansion pipeline used by the second heat unit (2) is communicated to the inside of the expansion tank (A) and is 100mm higher than an overflow pipeline of the expansion tank (A), so that the expansion pipeline is positioned in a gas phase space of the expansion tank (A) in the heat medium debugging stage of the second heat unit (2).
9. A heating medium system capable of being adjusted in a split manner according to claim 8, wherein: the caliber of the expansion pipe corresponding to the first heat unit (1) is determined according to the total heat load.
10. A heating medium system capable of being adjusted in a split manner according to claim 9, wherein: the caliber of the expansion pipe corresponding to the second heat unit (2) is determined according to the heat load of the second heat unit (2).
11. A heating medium system debugging method capable of being debugged in a split-ranging mode is characterized by comprising the following steps:
1) closing the second heat medium furnace (E), closing the second circulating pump (F), closing a seventh valve (7) of a heat medium outlet of the second heat medium furnace (E), closing a fourth valve (4) of an oil return header pipe, and opening a sixth valve (6) to enable the first heat medium furnace (C) to independently provide heat for the first heat using unit (1);
2) opening an eighth valve (8) of a heat medium outlet of a second heat medium furnace (E), opening a fifth valve (5) of an oil return header pipe, and closing a ninth valve (9) and a tenth valve (10) between the first heat unit (1) and the second heat unit (2) to enable the second heat medium furnace (E) to independently provide heat for the second heat unit (2);
3) closing the second valve (2) of the heating medium filling pipeline, opening the first valve (1) of the filling pipeline, closing the third valve (3) of the expansion pipeline, starting the filling pump (B) and filling the heating medium for the newly added second heat unit (2);
4) the second heat unit (2) completes the filling of the heat medium system, and the filling pump (B) is closed;
5) starting a second circulating pump (F) to circulate the heating medium in a heating medium system pipeline of the second heat unit (2);
6) starting the second heat medium furnace (E), opening the third valve (3) of the expansion pipeline, closing the first valve (1) of the filling pipeline, heating the heat medium in the heat medium system of the second heat unit (2), and completing the dehydration and the dealkylation of the heat medium in the heat medium system of the second heat unit (2) through the expansion pipeline and the expansion tank (A);
7) the temperature of the heat medium of the second heat unit (2) rises to the temperature required by a user device, an eighth valve (8) of a heat medium outlet of the second heat medium furnace (E) is closed, a fifth valve (5) of an oil return header is closed, a third valve (3) of an expansion pipeline is closed, a seventh valve (7) of the heat medium outlet of the second heat medium furnace (E) is opened, a fourth valve (4) of the oil return header is opened, a ninth valve (9) and a tenth valve (10) between the first heat unit (1) and the second heat unit (2) are opened, a sixth valve (6) is opened, the first heat medium furnace (C) and the second heat medium furnace (E) are used in parallel, heat is provided for the first heat unit (1) and the second heat unit (2), and the heat medium system is debugged in a split pass manner.
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Application publication date: 20220308 |