CN112178920A - Water circulation heating system for full-automatic steam paraffin removal vehicle - Google Patents
Water circulation heating system for full-automatic steam paraffin removal vehicle Download PDFInfo
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- CN112178920A CN112178920A CN202010958476.1A CN202010958476A CN112178920A CN 112178920 A CN112178920 A CN 112178920A CN 202010958476 A CN202010958476 A CN 202010958476A CN 112178920 A CN112178920 A CN 112178920A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 236
- 238000010438 heat treatment Methods 0.000 title claims abstract description 78
- 239000012188 paraffin wax Substances 0.000 title claims abstract description 42
- 239000002283 diesel fuel Substances 0.000 claims abstract description 123
- 239000008236 heating water Substances 0.000 claims abstract description 40
- 239000000446 fuel Substances 0.000 claims abstract description 13
- 230000002528 anti-freeze Effects 0.000 claims description 23
- 238000007710 freezing Methods 0.000 claims description 16
- 239000007788 liquid Substances 0.000 claims description 15
- 238000003466 welding Methods 0.000 claims description 12
- 239000010865 sewage Substances 0.000 claims description 8
- 230000008014 freezing Effects 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 4
- 238000011161 development Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 66
- 239000000295 fuel oil Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000000945 filler Substances 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H7/00—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release
- F24H7/02—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid
- F24H7/0208—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid using electrical energy supply
- F24H7/0233—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid using electrical energy supply the transfer fluid being water
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B36/00—Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/0005—Details for water heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
- F24H9/1818—Arrangement or mounting of electric heating means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
- F24H9/2021—Storage heaters
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Feeding And Controlling Fuel (AREA)
Abstract
The invention relates to the technical field of oil and gas field development, in particular to a water circulation heating system for a full-automatic steam paraffin removal vehicle. This full-automatic steam paraffin removal vehicle water circulation heating system includes: the device comprises a diesel tank, a heating water tank, a hot water pipeline assembly and a control system; the hot water pipeline assembly and the boiler system share one water pump motor assembly. The water circulation heating system for the full-automatic steam paraffin removal vehicle provided by the invention can solve the problem that No. 0 diesel oil can be used in cold regions in winter, and the purpose of saving fuel cost is achieved.
Description
Technical Field
The invention relates to the technical field of oil and gas field development, in particular to a water circulation heating system for a full-automatic steam paraffin removal vehicle.
Background
As shown in fig. 1, it is a schematic structural view of a fully automatic steam paraffin removal truck in the prior art. The full-automatic steam paraffin removal vehicle is a special petroleum vehicle used for removing paraffin in an oil pipe and unfreezing a ground pipeline. The method specifically comprises the following steps: the device comprises a second-class chassis vehicle 1, a vehicle shed 6, a boiler 5, a combustor 3, a water pump motor assembly 4, a control system 2, a diesel tank 7 and a water tank 8.
Wherein the shed 6 is arranged on the auxiliary frame of the second type chassis vehicle 1, and the boiler 5, the control system 2, the water pump motor assembly 4, the burner 3 and the diesel tank 7 are arranged in the shed 6. The control system 2, the water pump motor assembly 4, the boiler 5, the combustor 3 and other components need well site power sources when running. And when the vehicle works on site, the engine of the second type chassis vehicle 1 is closed. The well site power supply is connected into a boiler control system, and a diesel generator set carried by the vehicle is only used as a standby power supply. Then the water pump is started to convey the water in the water tank 8 to the boiler coil, when the boiler coil is filled with the water, the burner 3 is started, and the diesel oil in the diesel oil tank is used as the fuel of the burner to provide energy for the steam generated by the boiler. Because the well site operation time is long, and boiler power is big, the diesel oil that class II chassis car 1 self carried can not satisfy the operation demand of steam paraffin removal car far away. Therefore, a special diesel tank must be arranged on the vehicle to provide fuel for a burner on the boiler so as to meet the requirements of well site operation. The volume of a diesel oil tank arranged on a general full-automatic steam paraffin removal vehicle is 1 cubic meter. In cold winter areas, the combustor must use high grade-35 diesel to meet operating requirements. No. 35 diesel oil is not durable and has high price, and the full-automatic steam paraffin removal vehicles used in well sites are very many, thereby causing huge waste of funds.
In order to solve the above problems, another prior art also provides a solution for heating the diesel fuel No. 0, but most of the prior art is directed to the problem of using the diesel fuel No. 0 for the diesel engine. The method is to heat No. 0 diesel oil by using antifreeze of a diesel engine. After the diesel engine is started, a large amount of No. 35 diesel oil is consumed, and all No. zero diesel oil can reach the temperature required by use after the diesel engine runs for a long time. As the chassis engine needs to be turned off when the steam paraffin removal vehicle works, the well site working time is short, and the situation that the vehicle can not wait too long to heat the No. 0 diesel oil is avoided. This results in even greater economic losses than direct use of-35 diesel. .
Disclosure of Invention
Technical problem to be solved
The invention provides a water circulation heating system for a full-automatic steam paraffin removal vehicle, which aims to overcome the defect that in the prior art, a large amount of No. 35 diesel oil needs to be consumed first to heat No. 0 diesel oil, and further, the consumed energy is large, so that the energy is wasted.
(II) technical scheme
In order to solve the above problems, the invention provides a water circulation heating system for a full-automatic steam paraffin removal vehicle, comprising: the device comprises a diesel tank, a heating water tank, a hot water pipeline assembly and a control system; the hot water pipeline assembly and the boiler system share one water pump motor assembly;
the diesel tank comprises a diesel tank body, an oil return port, an oil temperature sensor, a C-shaped air filter and a heating coil;
the diesel tank body comprises a first diesel oil storage bin and a second diesel oil storage bin; the freezing point of the first diesel oil is higher than that of the second diesel oil; the volume of the first diesel oil storage bin is larger than that of the second diesel oil storage bin;
a first oil discharge electromagnetic valve and a first oil filling port are arranged on the first diesel oil storage bin;
a second oil discharge electromagnetic valve and a second oil filling port are arranged on the second diesel oil storage bin;
the output ends of the first oil drain electromagnetic valve and the second oil drain electromagnetic valve are converged to one path through a tee joint and then connected to a fuel pipeline of the combustor;
an oil temperature sensor is arranged in the first diesel oil storage bin, collects the oil temperature of the first diesel oil in real time and transmits an oil temperature signal to a control system;
the heating coil is arranged inside the first diesel oil storage bin;
the heating water tank comprises a water tank body, a heater, a water temperature sensor and a breather valve; the anti-freezing liquid or water is stored in the water tank body, the anti-freezing liquid or water is heated by the heater, the water tank body is connected with the electromagnetic valve in the hot water pipeline, the bottom of the water tank body is provided with a water outlet, the top of the water tank body is provided with a water return port, the water outlet is connected with the first electromagnetic valve in the hot water pipeline assembly, and the water return port is connected with the water outlet of the heating coil; hot water or hot antifreeze is conveyed into a water inlet of the heating coil from a water outlet through a water pump, and then flows back to a water return port of the water tank body through the water outlet of the heating coil to finish primary thermal cycle;
the water temperature sensor collects the temperature of water or antifreeze in the water tank body and sends the temperature to the control system;
the hot water pipeline assembly comprises a water pump, a first electromagnetic valve, a second electromagnetic valve, a one-way valve, a fifth electromagnetic valve, a welding four-way valve, a third electromagnetic valve, a fourth electromagnetic valve and a welding three-way valve, wherein the first electromagnetic valve, the second electromagnetic valve and the one-way valve are connected together through the welding four-way valve and are connected to a water inlet of the water pump; the third electromagnetic valve and the fourth electromagnetic valve are connected together through a welded tee joint and are connected to a water outlet of the water pump;
the first electromagnetic valve is connected with a water outlet of the heating water tank and used for controlling the circulation of hot water or hot antifreeze in the heating water tank; the second electromagnetic valve is connected with a water outlet of a water tank of the boiler system;
the fourth electromagnetic valve is connected with a water inlet of the heating coil in the diesel tank body and used for conveying hot water or hot antifreeze into the heating coil; the third electromagnetic valve is connected with a water inlet of the boiler;
one end of the fifth electromagnetic valve is connected with the one-way valve, and the other end of the fifth electromagnetic valve is communicated with the chassis vehicle air cylinder pipeline.
The control system controls the output power of the heater according to the water temperature or the anti-freezing liquid temperature sent by the water temperature sensor and the oil temperature sent by the oil temperature sensor.
Preferably, the second diesel oil is-35 diesel oil; the first diesel oil is No. 0 diesel oil.
Preferably, the heating water tank further comprises a sewage draining outlet assembly;
the sewage draining outlet assembly is arranged at the lower part of the water tank body and comprises a ball valve and an elbow.
Preferably, the heating coil comprises a communication bend and a plurality of seamless tubes, adjacent seamless tubes being welded by the communication bend.
(III) advantageous effects
The water circulation heating system for the full-automatic steam paraffin removal vehicle provided by the invention can solve the problem that No. 0 diesel oil can be used in cold regions in winter, and the purpose of saving fuel cost is achieved.
Drawings
FIG. 1 is a schematic view of a prior art automatic vapor paraffin removal truck;
FIG. 2 is a schematic structural diagram of a water circulation heating system for a full-automatic steam paraffin removal vehicle according to an embodiment of the present invention;
FIG. 3 is a front view of a diesel tank in a water circulation heating system for a full-automatic steam paraffin removal vehicle according to an embodiment of the present invention;
FIG. 4 is a top view of a diesel tank in a water circulation heating system for a full-automatic steam paraffin removal vehicle according to an embodiment of the present invention;
FIG. 5 is a schematic view of a heating coil of a diesel tank in a water circulation heating system for a full-automatic steam paraffin removal vehicle according to an embodiment of the present invention;
FIG. 6 is a structural diagram of a heating water tank of a water circulation heating system for a full-automatic steam paraffin removal vehicle according to an embodiment of the present invention;
FIG. 7 is a structural diagram of a hot water pipeline assembly of a water circulation heating system for a full-automatic steam paraffin removal vehicle according to an embodiment of the present invention;
FIG. 8 is a structural diagram of a control system in the water circulation heating system of the full-automatic steam paraffin removal vehicle according to the embodiment of the invention.
Wherein: 1: a second type chassis; 2: a control system; 3: a burner; 4: a water pump motor assembly; 5: a boiler; 6: a carport; 7: a diesel tank; 8: a water tank; 9: heating the water tank; 10: a hot water pipeline assembly; 11: a diesel tank; 12: a burner; 13: a second oil filler port; 14: an oil temperature sensor; 15: an oil return port; 16: a type C air cleaner; 17: a first oil filler port; 18: a diesel tank body; 19: a second oil drain solenoid valve; 20: a first oil drain solenoid valve; 21: a heating coil; 22: a seamless pipe; 23: the elbow is communicated; 24: a sewage draining outlet assembly; 25: a heater; 26: a water temperature sensor; 27: a breather valve; 28: a water tank body; 29: a first solenoid valve; 30: welding a four-way joint; 31: a second solenoid valve; 32: a third electromagnetic valve; 33: a fourth solenoid valve; 34: welding a tee joint; 35: a water pump; 36: a fifth solenoid valve; 37: a one-way valve.
Detailed Description
The present invention will be described in detail below with reference to the drawings and examples.
As shown in fig. 1 to 8, the present invention provides a water circulation heating system for a fully automatic steam paraffin removal vehicle, comprising: the system comprises a heating water tank 9, a hot water pipeline assembly 10, a diesel tank 11 and a control system; the hot water pipeline assembly 10 and the boiler system share one water pump motor assembly 4;
the diesel tank 11 includes a second filler opening 13, an oil temperature sensor 14, an oil return opening 15, a C-type air cleaner 16, a first filler opening 17, a diesel tank case 18, a second oil drain solenoid valve 19, a first oil drain solenoid valve 20, and a heating coil 21.
The diesel tank body 18 comprises a first diesel oil storage bin and a second diesel oil storage bin; the freezing point of the first diesel oil is higher than that of the second diesel oil; the volume of the first diesel oil storage bin is larger than that of the second diesel oil storage bin; wherein, the first diesel oil is No. 0 diesel oil, and the second diesel oil is No. 35 diesel oil.
Wherein, the effective volume of the No. 0 diesel oil bin is 1 cubic meter, and the No. 0 diesel oil is stored in the No. 0 diesel oil bin; the effective volume of No. 35 diesel oil cabin is 0.01 cubic meter, and the No. 35 diesel oil is stored in the No. 35 diesel oil cabin, and the No. 35 diesel oil has the function of filling the fuel oil pipeline with No. 35 diesel oil after the operation is finished, so that the No. 0 diesel oil is prevented from being frozen in the fuel oil pipeline and blocking the fuel oil pipeline. As the drift diameter of the fuel pipeline is small and the fuel path is short, the-35 diesel oil filled in the fuel pipeline is very little, and the-35 diesel oil stored in the pipeline is about 1 liter after calculation. The diesel tank body 18 is also composed of parts for strengthening the support and leakage prevention function, a liquid level meter and the like.
A first oil discharge electromagnetic valve 20 and a first oil filling port 17 are arranged on the first diesel oil storage bin;
a second oil discharge electromagnetic valve 19 and a second oil filling port 13 are arranged on the second diesel oil storage bin;
the output ends of the first oil discharge electromagnetic valve 20 and the second oil discharge electromagnetic valve 19 are converged into one path through a tee joint and then are connected to a fuel pipeline of the combustor 12;
they control the output of-35 diesel and 0 diesel, respectively. The output ends of the two electromagnetic valves are converged into one path through a tee joint and then connected into a fuel pipeline. The diesel oil which does not participate in combustion is conveyed to the oil return opening 15 by the oil suction pump of the burner and enters the diesel oil tank 9 again through the oil return opening 15.
An oil temperature sensor 14 is arranged in the first diesel oil storage bin, collects the temperature of the first diesel oil in real time and transmits an oil temperature signal to a control system; in the process of heating the No. 0 diesel oil, the oil temperature sensor 14 measures the temperature of the No. 0 diesel oil in real time and transmits an oil temperature signal to the control system so as to control the water temperature of the heating water tank 9 and the operation of the water pump 35.
The heating coil 21 is arranged inside the first diesel oil storage bin;
the C-shaped air filter 16 is used for balancing the atmospheric pressure inside and outside the oil tank body, and the diesel oil filled in the diesel oil tank is too much in the moving and transporting process of the steam paraffin removal truck. Diesel oil is usually easy to splash from the exhaust port to the outside of the tank, and due to the special structure of the C air filter 16, the C air filter can not only replace the exhaust port, but also prevent the diesel oil in the tank from splashing out of the tank during transportation. The heating coil 21 is used for heating No. 0 diesel oil by circulating hot water in the system in a heat exchange mode and consists of 20 1-inch seamless pipes 22 and communicated elbows 23. The seamless pipe directly passes through the diesel tank body 18, the seamless pipe 22 does not allow any welding spot and splicing in the diesel tank body 18, the whole pipe must pass through the diesel tank body 18 to prevent hot water in the coil pipe from leaking into the diesel tank body 18, the wall and the seamless pipe 22 must be fully welded at the passing position, and then a hydraulic test is carried out to ensure that no dew point exists at the passing position. Outside the box, seamless pipe 22 passes through UNICOM's elbow 23 welding together, makes 20 seamless pipes form the route, and the water inlet of heating coil 21 directly is connected with fourth solenoid valve 33 in the hot water pipeline, and the delivery port of heating coil 21 directly is connected with the water tank 28 return water mouth of heating tank through 1 cun seamless pipe to hot water can circulate in heating coil 21, gives 0 # diesel oil heat transfer.
The heating water tank 9 is used for storing the antifreeze, heating the antifreeze in the heating water tank and conveying the antifreeze to the heating coil 21 of the diesel oil tank, and the antifreeze has the advantage of not freezing in winter and can be stored for a long time. If the field operation lacks the anti-freezing liquid, the anti-freezing liquid can be replaced by water, but after the operation is finished, the water in the water tank body 28 needs to be drained through the sewage discharge outlet assembly 24 so as to prevent the water from freezing and freezing other elements when the field operation is not carried out.
External dimensions of the heating water tank 9: length, width, height =300mm, 350mm, and comprises a sewage discharge outlet assembly 24, a heater 25, a water temperature sensor 26, a breather valve 27, a water tank 28, and the like. The water outlet is arranged at the lower part of the water tank body 28, and the water outlet of the water tank body 28 is directly connected with a first electromagnetic valve 29 in a hot water pipeline; the water return port is arranged at the upper part of the water tank body and is directly connected with the water outlet of the heating coil 21 through a seamless pipe, hot water is conveyed from the water outlet of the water tank body 28 to the water inlet of the heating coil 21 through the water pump 35, the hot water enters the coil to release heat and then flows back to the water return port of the water tank body 28 through the water outlet of the heating coil 21 to realize primary heat circulation, and the water tank body 28 also comprises other components, such as a tank cover, a tank body support, a liquid level meter and the like. The drain outlet assembly 24 is arranged at the lower part of the water tank body and is used for discharging the deteriorated antifreeze in the tank body out of the tank body, if water is added into the water tank body, the water is required to be discharged out of the tank body after the operation is finished every time, and the drain outlet assembly consists of a ball valve and an elbow. The heater 25 is used for heating the antifreeze in the box body to ensure that the antifreeze has certain heat energy to heat the No. 0 diesel oil, and the control system controls the heating time and the heating power of the diesel oil. The water temperature sensor 26 communicates the temperature of the water within the tank to the control system. The control system controls the output of the heater 25 according to the water temperature. The breather valve 27 is used for balancing the atmospheric pressure inside and outside the water tank body.
The first electromagnetic valve 29, the second electromagnetic valve 31 and the one-way valve 37 in the hot water pipeline assembly 10 are connected together through a welding four-way valve 30 and are connected to the water inlet of the water pump 35; the third electromagnetic valve 32 and the fourth electromagnetic valve 33 are connected together through a welded tee 34 and are connected to a water outlet of a water pump 35;
the first electromagnetic valve 29 is connected with a water outlet of the heating water tank 9 and controls the circulation of hot water or hot antifreeze in the heating water tank 9; the second electromagnetic valve 31 is connected with the water outlet of the boiler system water tank 8;
the fourth electromagnetic valve 33 is connected with a water inlet of the heating coil 21 in the diesel tank body 18 and conveys hot water or hot antifreeze to the heating coil 21;
when in operation, the second electromagnetic valve 31 needs to be opened; when heating the diesel oil 0, the second electromagnetic valve 31 needs to be closed. The third electromagnetic valve 32 is connected with the water inlet of the boiler, and when in operation, the third electromagnetic valve 32 needs to be opened; when the No. 0 diesel oil is heated, the third electromagnetic valve 32 needs to be closed, and hot water in the heating water tank is prevented from being mixed into a water inlet of the boiler. The fourth solenoid valve 33 is connected to the inlet of the heating coil 21 in the diesel tank to deliver hot water to the coil.
The fifth electromagnetic valve 36 is connected with the chassis air cylinder pipeline, the fifth electromagnetic valve 36 is connected with one end of the one-way valve 37, the other end of the one-way valve 37 is connected with the welding four-way valve 30, when the No. 0 diesel oil reaches the heating temperature, the heating program is closed, the fifth electromagnetic valve 36 is opened, high-pressure air in the air cylinder enters the hot water pipeline, hot water in the hot water pipeline is blown back to the heating water tank, water is prevented from remaining in the hot water pipeline, the function of the one-way valve 37 is that the high-pressure air only can enter the hot water pipeline assembly 10, and water in the hot water pipeline assembly 10 cannot flow into one side of the fifth electromagnetic valve 36.
The control system controls the output of the heater 25 based on the water temperature or the antifreeze temperature sent from the water temperature sensor 26 and the oil temperature sent from the oil temperature sensor 14.
The power supply used in the operation of the full-automatic steam paraffin removal vehicle is a 380V power supply of a well site, the 380V power supply of the well site is directly connected into a control system, and 380V power electricity is distributed to each electric device for use. The control system may be integrated into, become part of, a boiler control system. The control system mainly comprises a PLC (including a digital quantity module, an analog quantity input module and an analog quantity output module system) and an upper computer touch screen HMI. The control system controls the temperature of the heating water tank 9 and the oil temperature of the diesel tank 11 according to the water temperature sensor 26 and the oil temperature sensor 14. When the oil temperature rises to 8 ℃, the heating of the heating water tank 9 is stopped. The first solenoid valve 29 is closed and the fifth solenoid valve 36 is opened to blow hot water in the hot water line and the heating coil 21 into the heating water tank 9, preventing residual water in the line. After the operation is finished, the second oil discharge electromagnetic valve 19 is opened, the first oil discharge electromagnetic valve 20 is closed, and the oil suction pump motor of the burner 12 is started, so that the diesel oil pipeline is filled with No. 35 diesel oil. The fuel pipeline is prevented from being blocked by freezing of residual No. 0 diesel oil under the condition of low temperature.
The water circulation heating system for the full-automatic steam paraffin removal vehicle, provided by the invention, heats the antifreeze or water in the heating water tank 9 to 85 ℃ by using the electric heater 25, conveys the antifreeze into the heating coil 21 in the diesel oil tank body 18 through the water pump 35, returns to the heating water tank 9, heats the No. 0 diesel oil in a circulation heat exchange mode, and after the oil temperature is raised to 8 ℃. And (3) closing the heating device of the diesel tank, opening the fifth electromagnetic valve 36 of the chassis air storage cylinder, and blowing all water in the coil pipe of the diesel tank 11 into the heating water tank 9. And starting the boiler system to perform well site operation. After the operation is finished, the burner 12 oil suction pump is started, and a small amount of No. 35 diesel oil in the diesel oil tank 11 is sucked into the oil supply and return pipeline. The-35 diesel will discharge all the 0 diesel remaining in the pipeline back to the diesel tank 11. So as to prevent No. 0 diesel oil from being frozen in the pipeline when the diesel engine is not operated in winter. Blocking the fuel line. After the full-automatic steam paraffin removal vehicle enters a well site, the chassis vehicle engine is turned off, and 380V power electricity of the well site is connected into a control system. The heating water tank is required to be filled with 20L of antifreeze liquid for the first use, if the antifreeze liquid does not exist under the condition limitation, 20L of clean water can be added, but after the operation is finished each time, the clean water in the heating water tank needs to be drained through the drain outlet assembly 24.
The working principle of the water circulation heating system for the full-automatic steam paraffin removal vehicle is described in detail as follows:
starting a heating program: the control system starts the heater 25 to detect the water temperature in the heating water tank 9, so that the control system, the heater and the water temperature sensor form closed-loop PID control, and the water temperature is stabilized at 85 ℃. When the water temperature of the heating water tank 9 reaches 85 ℃, the first electromagnetic valve 29 and the fourth electromagnetic valve 33 are opened, other electromagnetic valves are closed, then the water pump 35 is started, the water pump 35 conveys hot water from the heating water tank 9 to the heating coil 21, the hot water in the heating coil 21 heats No. 0 diesel oil through heat exchange, and then the hot water returns to the inside of the heating water tank 9 through the water return port of the heating coil 21. The water pump 35 delivers circulating hot water in the coil to heat the No. 0 diesel.
And (3) closing the heating program: when the oil temperature measured by the oil temperature sensor reaches 8 ℃, the control system turns off the power supply of the heater 25, turns off the water pump 35, turns off the first electromagnetic valve 29, turns on the fourth electromagnetic valve 33, turns on the fifth electromagnetic valve 36, and makes the high-pressure gas in the air storage cylinder blow into the hot water pipeline assembly 10 and the heating coil 21, and after blowing for 3 minutes, the hot water in the pipeline completely flows back to the heating water tank 9, then turns off the fourth electromagnetic valve 33, and turns off the fifth electromagnetic valve 36, so on. Heating the No. 0 diesel oil. And opening the second electromagnetic valve 31, opening the third electromagnetic valve 32, opening the No. 0 diesel oil drain electromagnetic valve 20, and then entering a paraffin removal operation program.
An operation end program: after the paraffin removal operation is finished, the control system opens the No. 35 diesel oil discharge electromagnetic valve 19, closes all other electromagnetic valves, closes the water pump 35, closes the combustor 12, starts the oil suction pump motor of the combustor 12 (because only the oil suction pump motor is started, an ignition program of the combustor is not started, the oil suction pump can only suck diesel oil into an oil return pipeline from an oil inlet pipeline and then discharge the diesel oil into the diesel oil tank from the oil return pipeline), the oil suction pump sucks the No. 35 diesel oil into the oil inlet pipeline and the oil return pipeline, and discharges the No. 0 diesel oil remained in the pipelines back into the diesel oil tank 11, so that the No. 0 diesel oil is prevented from being frozen and blocking the pipelines when the steam paraffin removal vehicle is stored. After the oil suction pump works for 5s, the No. 35 diesel oil is filled in the whole fuel oil pipeline, the oil suction pump motor of the combustor 12 is closed, the No. 35 diesel oil drain valve 19 is closed, if the liquid in the heating water tank 9 is clean water, a valve on the sewage discharge outlet assembly 24 needs to be opened, the clean water is completely drained, and the water in the hot water tank 9 is prevented from being frozen. Finally, the control system is closed, and the 380V power supply of the well site is disconnected. And finishing all working processes.
The invention solves the problem that the burner on the full-automatic steam paraffin removal vehicle can use No. 0 diesel oil in cold areas in winter, and has the following advantages:
(1) compared with No. 35 diesel oil, the No. 0 diesel oil has great advantages in price and combustion heat efficiency value, and the cost of using the No. 0 diesel oil in each full-automatic steam paraffin removal vehicle operation is reduced by about 1100 yuan compared with using the No. 35 diesel oil in cold seasons through field operation measurement.
(2) When the steam paraffin removal vehicle works, the power supply adopts 380V power electricity of a well site, so that the oil temperature of No. 0 diesel oil can be quickly increased to 8 ℃, the use requirement of a combustor can be met, and the working time requirement of the well site can be met.
(3) This system has increased a heating water tank, and its heating water tank occupation space is little, and a water pump is shared with boiler system to this system simultaneously, and this system occupies little influence to the on-vehicle space on the whole, therefore this set of heating system not only is suitable for the steam paraffin removal car of newly dispatching from the factory to use, also is applicable to the transformation of old full-automatic steam paraffin removal car.
(4) The liquid medium in the heating water tank is generally put into anti-freezing liquid which is not unfrozen in winter and can be used for a long time, but if the well site conditions are not allowed, clear water can also be used as the heating medium, but when the clear water is used as the heating medium, the clear water must be discharged from the heating water tank after each operation is finished, so that the applicability of the system in the well site is high.
(5) When the oil temperature meets the use requirement, the high-pressure gas in the gas storage cylinder is utilized to discharge the residual water in the hot water pipeline and the heating coil back to the heating water tank so as to ensure that the hot water pipeline is unblocked in the next operation.
(6) The diesel oil tank is provided with a No. 35 diesel oil bin with the volume of 0.01 cubic meter, the No. 35 diesel oil is stored in the diesel oil bin, after the operation is finished, the No. 35 diesel oil is flushed into the whole fuel oil pipeline, the No. 0 diesel oil reserved in the fuel oil pipeline is discharged into the No. 0 diesel oil bin, and about 1L of the No. 35 diesel oil flushed into the fuel oil pipeline every time is avoided, so that the No. 0 diesel oil is frozen in the fuel oil pipeline to block an oil way when the operation is not performed.
The above embodiments are only for illustrating the invention and are not to be construed as limiting the invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention, therefore, all equivalent technical solutions also belong to the scope of the invention, and the scope of the invention is defined by the claims.
Claims (4)
1. The utility model provides a full-automatic steam paraffin removal vehicle water circulation heating system which characterized in that includes: the device comprises a diesel tank, a heating water tank, a hot water pipeline assembly and a control system; the hot water pipeline assembly and the boiler system share one water pump motor assembly;
the diesel tank comprises a diesel tank body, an oil return port, an oil temperature sensor, a C-shaped air filter and a heating coil;
the diesel tank body comprises a first diesel oil storage bin and a second diesel oil storage bin; the freezing point of the first diesel oil is higher than that of the second diesel oil; the volume of the first diesel oil storage bin is larger than that of the second diesel oil storage bin;
a first oil discharge electromagnetic valve and a first oil filling port are arranged on the first diesel oil storage bin;
a second oil discharge electromagnetic valve and a second oil filling port are arranged on the second diesel oil storage bin;
the output ends of the first oil drain electromagnetic valve and the second oil drain electromagnetic valve are converged to one path through a tee joint and then connected to a fuel pipeline of the combustor;
an oil temperature sensor is arranged in the first diesel oil storage bin, collects the oil temperature of the first diesel oil in real time and transmits an oil temperature signal to a control system;
the heating coil is arranged inside the first diesel oil storage bin;
the heating water tank comprises a water tank body, a heater, a water temperature sensor and a breather valve; the anti-freezing liquid or water is stored in the water tank body, the anti-freezing liquid or water is heated by the heater, the water tank body is connected with the electromagnetic valve in the hot water pipeline, the bottom of the water tank body is provided with a water outlet, the top of the water tank body is provided with a water return port, the water outlet is connected with the first electromagnetic valve in the hot water pipeline assembly, and the water return port is connected with the water outlet of the heating coil; hot water or hot antifreeze is conveyed from a water outlet of the water tank body to a water inlet of the heating coil pipe through the water pump, and then flows back to a water return port of the water tank body through a water outlet of the heating coil pipe to finish primary thermal cycle;
the water temperature sensor collects the temperature of water or antifreeze in the water tank body and sends the temperature to the control system;
the hot water pipeline assembly comprises a water pump, a first electromagnetic valve, a second electromagnetic valve, a one-way valve, a fifth electromagnetic valve, a welding four-way valve, a third electromagnetic valve, a fourth electromagnetic valve and a welding three-way valve, wherein the first electromagnetic valve, the second electromagnetic valve and the one-way valve are connected together through the welding four-way valve and are connected to a water inlet of the water pump; the third electromagnetic valve and the fourth electromagnetic valve are connected together through a welded tee joint and are connected to a water outlet of the water pump;
the first electromagnetic valve is connected with a water outlet of the heating water tank and used for controlling the circulation of hot water or hot antifreeze in the heating water tank; the second electromagnetic valve is connected with a water outlet of a water tank of the boiler system;
the fourth electromagnetic valve is connected with a water inlet of the heating coil in the diesel tank body and used for conveying hot water or hot antifreeze to the heating coil; the third electromagnetic valve is connected with a water inlet of the boiler;
one end of the fifth electromagnetic valve is connected with the one-way valve, and the other end of the fifth electromagnetic valve is communicated with the chassis vehicle air cylinder pipeline;
the control system controls the output power of the heater according to the water temperature or the anti-freezing liquid temperature sent by the water temperature sensor and the oil temperature sent by the oil temperature sensor.
2. The water circulation heating system for the full-automatic steam paraffin removal vehicle as claimed in claim 1, wherein the second diesel oil is-35 diesel oil; the first diesel oil is No. 0 diesel oil.
3. The water circulation heating system for the full-automatic steam paraffin removal vehicle as claimed in claim 1, wherein the heating water tank further comprises a sewage discharge outlet assembly;
the sewage draining outlet assembly is arranged at the lower part of the water tank body and comprises a ball valve and an elbow.
4. The water circulation heating system for the full-automatic steam paraffin removal vehicle of claim 1, wherein the heating coil comprises a communication elbow and a plurality of seamless pipes, adjacent seamless pipes are welded by the communication elbow.
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| CN112178920B (en) | 2021-09-10 |
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