CN114001465B - Solar crude oil heating composite system and method for regulating soil temperature field balance - Google Patents

Solar crude oil heating composite system and method for regulating soil temperature field balance Download PDF

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Publication number
CN114001465B
CN114001465B CN202111294600.XA CN202111294600A CN114001465B CN 114001465 B CN114001465 B CN 114001465B CN 202111294600 A CN202111294600 A CN 202111294600A CN 114001465 B CN114001465 B CN 114001465B
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oil
temperature
pipe
crude oil
water
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CN114001465A (en
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陈海飞
李旭磊
顾宇波
王若彤
于海龙
孙运兰
刘恩海
朱宝忠
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Changzhou University
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Changzhou University
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S20/00Solar heat collectors specially adapted for particular uses or environments
    • F24S20/40Solar heat collectors combined with other heat sources, e.g. using electrical heating or heat from ambient air
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S60/00Arrangements for storing heat collected by solar heat collectors
    • F24S60/30Arrangements for storing heat collected by solar heat collectors storing heat in liquids
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S80/00Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
    • F24S80/30Arrangements for connecting the fluid circuits of solar collectors with each other or with other components, e.g. pipe connections; Fluid distributing means, e.g. headers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24TGEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
    • F24T10/00Geothermal collectors
    • F24T10/10Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground
    • F24T10/13Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground using tube assemblies suitable for insertion into boreholes in the ground, e.g. geothermal probes
    • F24T10/15Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground using tube assemblies suitable for insertion into boreholes in the ground, e.g. geothermal probes using bent tubes; using tubes assembled with connectors or with return headers
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/10Geothermal energy
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/40Solar thermal energy, e.g. solar towers

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Road Paving Structures (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Abstract

The invention discloses a solar crude oil heating composite system and a method for regulating the balance of a soil temperature field. The efficient layered oil tank is used, the interference and the mixing between different temperature layers can be reduced through the specially designed oil inlet pipe and the oil outlet pipe, the layering of oil is better realized, the effective heat storage capacity of the oil tank is increased, the water-oil composite buried pipe system is adopted, the contact area between the oil tank and the surrounding environment is increased through the spiral oil pipe, the heat exchange efficiency is improved, and the change of a soil temperature field is relieved while the heat supply is ensured. The invention fully utilizes the solar photo-thermal technology, and can heat crude oil to separate oil from gas; secondly, supplying heat to the building; and thirdly, the temperature attenuation of the soil caused by heating is repaired, so that the soil is coordinated with the ground source heat pump system to the high degree, and the ground source efficiency and functions are improved to the greatest extent.

Description

Solar crude oil heating composite system and method for regulating soil temperature field balance
Technical Field
The invention belongs to the field of solar energy, and particularly relates to a solar crude oil heating composite system and a method for regulating the balance of a soil temperature field.
Background
The ground source heat pump system has the advantages of high energy consumption in the operation process, slow recovery of soil temperature, low energy flow density, intermittence and unreliability of the solar heat collection system, technical limitation of the ground source heat pump system, and capability of improving the resource utilization rate by combining the two through coupling control.
The geothermal energy is used as a green low-carbon renewable energy source, and has the characteristics of large reserve, wide distribution, cleanness and stability. Aiming at the problem that the traditional energy source is used for heating to cause environmental pollution, the seasonal energy supply is realized by adopting the ground source heat pump technology. The ground source heat pump has wide application prospect as a novel sustainable technology. However, the long-time heat extraction causes that the soil temperature is not balanced, so that the heat unbalance of a soil temperature field can be caused, and the operation of a ground source heat pump system is not facilitated for a long time.
In order to realize the compensation balance of the soil temperature field, a solution idea of a solar energy coupling ground source heat pump system is provided. The ground source heat pump system has the advantages of high energy consumption in the operation process, slow recovery of soil temperature, low energy flow density, intermittence and unreliability of the solar heat collection system, technical limitation of the ground source heat pump system, and capability of improving the resource utilization rate by combining the two through coupling control.
Most of the prior art is that solar heating water is connected into a ground source heat pump to serve as heat supplement so as to solve the problem of unbalance of a soil temperature field, so that the temperature requirement on a solar heating system is higher, the gradient utilization of energy is not achieved, and part of heated water cannot reach the required temperature and is required to be repeatedly heated, so that part of solar radiation energy is wasted, and the efficiency of a solar heat collector is reduced.
Disclosure of Invention
The invention aims to solve the technical problem of providing a solar crude oil heating composite system and a soil temperature field balancing method, which fully utilize solar resources to repair a soil temperature field, supply heat for a building and heat crude oil to facilitate oil-gas separation.
The technical scheme adopted for solving the technical problems is as follows:
a solar crude oil heating composite system for regulating the balance of a soil temperature field comprises a sleeve type solar petroleum heater 1, a high-efficiency heat storage layered oil tank 3, a multi-stage two-phase separator 4, a gas collecting device 5, an oil collecting device 6, a heat exchanger 7, an end user 9, a ground source heat pump unit 10, a buried water pipe 11 and a buried oil pipe 12.
The hot oil outlet of the sleeve type solar petroleum heater 1 is connected with a first temperature control three-way valve 2 through a pipeline, the other two pipelines of the first temperature control three-way valve 2 are respectively connected with a hot oil inlet 3-1 of the high-efficiency heat storage layered oil tank 3 and an inlet of the buried oil pipe 12, and the outlet of the buried oil pipe 12 is connected with a cold oil inlet of the sleeve type solar petroleum heater 1; the first temperature control three-way valve 2 is used for judging the temperature of crude oil from the sleeve type solar energy petroleum heater 1, when the oil temperature reaches the lower temperature limit of the high-efficiency heat storage layered oil tank 3, the first temperature control three-way valve 2 controls the crude oil to enter the high-efficiency heat storage layered oil tank 3, and when the oil temperature does not reach the lower temperature limit of the high-efficiency heat storage layered oil tank 3, the first temperature control three-way valve 2 controls the crude oil to be conveyed to the buried oil pipe 12; the hot oil outlet 3-4 of the high-efficiency heat storage layered oil tank 3 is connected with the oil inlet 4-3 of the multi-stage two-phase separator 4, the top of the multi-stage two-phase separator 4 is provided with the gas collecting device 5, the oil outlet 4-9 of the multi-stage two-phase separator 4 is connected with the hot oil inlet of the heat exchanger 7, and the cold oil outlet of the heat exchanger 7 is connected with the oil collecting device 6; the cold water outlet of the end user 9 is respectively connected with the cold water inlet of the heat exchanger 7 and the cold water inlet of the ground source heat pump unit 10; on the one hand, cold water is converted into hot water with hot crude oil in the heat exchanger 7, a hot water outlet of the heat exchanger 7 is connected with the second temperature control three-way valve 13 through a pipeline, and the other two pipelines of the second temperature control three-way valve 13 are respectively connected with a hot water inlet of the end user 9 and an inlet of the buried water pipe 11; the second temperature control three-way valve 13 is used for judging the water temperature from the heat exchanger 7, and when the water temperature reaches the lower temperature limit of the end user 9, the second temperature control three-way valve 13 controls the hot water inlet of the hot water to the end user 9; when the water temperature does not reach the lower temperature limit of the end user 9, the second temperature control three-way valve 13 controls the hot water to be connected with the buried water pipe 11; on the other hand, the cold water outlet of the end user 9 is connected with the inlet of the buried water pipe 11 after passing through the ground source heat pump unit 10, and is circulated to the ground source heat pump unit 10 after heat exchange, and is led to the end user 9 when the water temperature of the user is required by heating through the ground source heat pump unit 10.
The efficient heat storage layered oil tank is characterized in that temperature partition plates 3-5 are horizontally arranged in the efficient heat storage layered oil tank 3 in parallel, partition plate openings 3-6 are formed in the temperature partition plates 3-5, an internal oil pipe connected with a hot oil inlet 3-1 of the efficient heat storage layered oil tank 3 passes through the temperature partition plates 3-5 from top to bottom, a layered inlet 3-8 is formed in each layer of the temperature partition plates 3-5, heated crude oil flows into the efficient heat storage layered oil tank 3 through the layered inlet 3-8, a temperature sensor and a temperature control switch are arranged at the hot oil inlet 3-1, so that crude oil at different temperatures flows into different layers, and the temperature of crude oil at the uppermost layer is highest. The bottom layer of the high-efficiency heat storage layered oil tank 3 is provided with a horizontal porous oil pipe 3-9 and a cold oil inlet 3-7 relatively, and the horizontal porous oil pipe 3-9 is connected with a heating loop oil return pipe 3-3, so that low-temperature oil in the high-efficiency heat storage layered oil tank 3 flows out and circulates back into the sleeve type solar petroleum heater 1; the hot oil outlet 3-4 of the multistage two-phase separator 4 is arranged above the uppermost temperature baffle 3-5.
An oil inlet 4-3 is arranged at the upper part of the multi-stage two-phase separator 4, a spiral guide vane 4-8 is arranged below a pipeline extending from the oil inlet 4-3, a primary filter element 4-2 and a secondary filter element 4-1 are sequentially arranged at the tail end of the spiral guide vane 4-8 from top to bottom, a cavity is arranged below the secondary filter element 4-1, the cavity is connected with the outside of the multi-stage two-phase separator 4 through an oil guide pipe 4-10 and an oil outlet 4-9, and a drain outlet 4-11 is arranged at the bottom of the cavity; the upper part of the oil inlet 4-3 is provided with a separator umbrella 4-7, and the top of the multi-stage two-phase separator 4 is provided with an air outlet pipe 4-5 and a safety valve 4-6;
the sleeve type solar petroleum heater 1 comprises an outer layer water pipe 1-1 and an inner layer oil pipe 1-2, wherein water in the outer layer water pipe 1-1 is heated by solar energy and then uniformly transfers heat to crude oil in the inner layer oil pipe 1-2.
The buried water pipe 11 is formed by connecting a plurality of U-shaped water pipes 11-1 in parallel, and the buried oil pipe 12 is formed by connecting a plurality of spiral oil pipes 11-2 in parallel.
Further, a circulating pump 16 is arranged on a pipeline between the outlet of the buried oil pipe 12 and the cold oil inlet of the sleeve type solar oil heater 1.
Further, a lifting pump 17 is arranged on a pipeline connecting the oil outlets 4-9 of the multistage two-phase separator 4 with the hot oil inlet of the heat exchanger 7.
Further, the separator umbrella 4-7 comprises an upper umbrella plate, a lower umbrella plate and a middle cylinder, wherein the bottom end of the lower umbrella plate is connected with the cylinder of the multi-stage two-phase separator 4, and any position in the circumferential direction is provided with a through hole; the top surface of the lower umbrella-shaped plate is closed, and the lower umbrella-shaped plate is communicated with the space of the upper umbrella-shaped plate through the cylinder.
The invention has the beneficial effects that: according to the invention, the solar photo-thermal technology is fully utilized, firstly crude oil can be heated to perform oil-gas separation, secondly heat is supplied to the building, thirdly the temperature attenuation of the soil caused by heating is repaired, and the temperature attenuation is highly coordinated with the ground source heat pump system, so that the ground source efficiency and functions are improved to the greatest extent, the solar energy utilization rate is improved, and the energy consumption is reduced. The temperature of the soil around the buried pipe is not too low, and the adverse effect of the ground source heat pump on the soil environment is relieved.
Drawings
FIG. 1 is a schematic diagram of a solar crude oil heating composite system and a soil temperature field balancing method according to an embodiment of the present invention.
Fig. 2 is a schematic structural view of the sleeve type solar oil heater (1) of the present invention.
Fig. 3 is a schematic structural view of the efficient heat storage layered oil tank (3) of the invention.
FIG. 4 is a schematic diagram of the structure of the multi-stage two-phase separator (4) of the present invention.
Fig. 5 is a schematic structural diagram of a water-oil composite pipe laying system.
Wherein, 1, a sleeve type solar petroleum heater, 2, a first temperature control three-way valve, 3, a high-efficiency heat storage layered oil tank, 4, a multi-stage two-phase separator, 5, a gas collecting device, 6, an oil collecting device, 7, a heat exchanger, 8, a first three-way valve, 9, a tail end device, 10, a ground source heat pump unit, 11, an underground water pipe, 12, an underground oil pipe, 13, a second temperature control three-way valve, 14, an oil supply pipe, 15, a second three-way valve, 16, a circulating pump, 1-1, an outer water pipe, 1-2, an inner oil pipe, 3-1 and a hot oil inlet, 3-3 parts of heating loop oil return pipes, 3-4 parts of hot oil outlets, 3-5 parts of temperature baffles, 3-6 parts of baffle holes, 3-7 parts of cold oil inlets, 3-8 parts of layered inlets, 3-9 parts of horizontal porous oil pipes, 4-1 parts of secondary filter cores, 4-2 parts of primary filter cores, 4-3 parts of oil inlets, 4-5 parts of air outlet pipes, 4-6 parts of safety valves, 4-7 parts of separator umbrellas, 4-8 parts of spiral guide vanes, 4-9 parts of oil outlets, 4-10 parts of oil pipes, 4-11 parts of sewage outlets, 4-12 parts of brackets, 11-1 parts of U-shaped water pipes, 11-2 parts of spiral oil pipes and 17 parts of lifting pumps.
Detailed Description
An embodiment of a solar crude oil heating composite system and a soil temperature field balancing method is further described with reference to FIG. 1.
A solar crude oil heating compounding method for regulating soil temperature field balance comprises the following specific steps:
the crude oil of the oil supply pipe 14 is pumped into the high-efficiency heat storage layered oil tank 3, is returned to the oil pipe 3-3 through a heating loop of the high-efficiency heat storage layered oil tank 3, is conveyed into the sleeve type solar energy petroleum heater 1 through the circulating pump 16, and is heated after the sleeve type solar energy petroleum heater 1 absorbs solar energy heat; the heated crude oil passes through a first temperature control three-way valve 2, when the oil temperature reaches the lower temperature limit of the high-efficiency heat storage layered oil tank 3, the first temperature control three-way valve 2 controls the crude oil to enter the high-efficiency heat storage layered oil tank 3, and when the oil temperature does not reach the lower temperature limit of the high-efficiency heat storage layered oil tank 3, the first temperature control three-way valve 2 controls the crude oil to be conveyed to the buried oil pipe 12;
the crude oil entering the high-efficiency heat storage layered oil tank 3 enters the multi-stage two-phase separator 4 through the hot oil outlet 3-4, the crude oil entering the multi-stage two-phase separator 4 flows to the lower part of the multi-stage two-phase separator 4 along the spiral guide vane 4-8, after being filtered by the primary filter element 4-2 and the secondary filter element 4-1, the crude oil flows into a cavity at the bottom of the multi-stage two-phase separator 4, water and sediments are discharged from the sewage outlet 4-11, the oil in the cavity passes through the oil outlet 4-9 and is conveyed to the heat exchanger 7 through the lifting pump, heat exchange is carried out on the oil and the backwater from the end user 9, and the oil after heat exchange enters the oil collecting device 6. Oil and gas are separated through the multi-stage two-phase separator 4, and the gas is collected in the gas collecting device 5 from the gas outlet pipe 4-5 at the top of the multi-stage two-phase separator 4; the hot water after heat exchange from the heat exchanger 7 passes through a second temperature control three-way valve 13, and when the water temperature reaches the lower temperature limit of the end user 9, the second temperature control three-way valve 13 controls the hot water to be led to the end user 9; when the water temperature does not reach the lower temperature limit of the end user 9, the second temperature control three-way valve 13 controls the hot water to the buried water pipe 11; after passing through the ground source heat pump unit 10 and the buried water pipe 11, the cold water from the end user 9 is heated to the heating temperature by the ground source heat pump unit 10 through the soil heat compensation, and finally is introduced into the end user.
The crude oil after heat exchange is conveyed to the sleeve type solar petroleum heater 1 for reheating through the circulating pump 16 together with cold oil from the heating loop oil return pipe 3-3 of the high-efficiency heat storage layered oil tank 3.
While the foregoing is directed to the preferred embodiment of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.

Claims (9)

1. The solar crude oil heating composite system for regulating the balance of a soil temperature field is characterized by comprising a sleeve type solar petroleum heater (1), a high-efficiency heat storage layered oil tank (3), a multi-stage two-phase separator (4), a gas collecting device (5), an oil collecting device (6), a heat exchanger (7), an end user (9), a ground source heat pump unit (10), a buried water pipe (11) and a buried oil pipe (12);
the hot oil outlet of the sleeve type solar petroleum heater (1) is connected with a first temperature control three-way valve (2) through a pipeline, the other two pipelines of the first temperature control three-way valve (2) are respectively connected with a hot oil inlet (3-1) of the efficient heat storage layered oil tank (3) and an inlet of the buried oil pipe (12), and the outlet of the buried oil pipe (12) is connected with a cold oil inlet of the sleeve type solar petroleum heater (1); the first temperature control three-way valve (2) is used for judging the temperature of crude oil from the sleeve type solar petroleum heater (1), when the oil temperature reaches the lower temperature limit of the high-efficiency heat storage layered oil tank (3), the first temperature control three-way valve (2) controls the crude oil to enter the high-efficiency heat storage layered oil tank (3), and when the oil temperature does not reach the lower temperature limit of the high-efficiency heat storage layered oil tank (3), the first temperature control three-way valve (2) controls the crude oil to be conveyed to the buried oil pipe (12); the hot oil outlet (3-4) of the high-efficiency heat storage layered oil tank (3) is connected with the oil inlet (4-3) of the multi-stage two-phase separator (4), the top of the multi-stage two-phase separator (4) is provided with the gas collecting device (5), the oil outlet (4-9) of the multi-stage two-phase separator (4) is connected with the hot oil inlet of the heat exchanger (7), and the cold oil outlet of the heat exchanger (7) is connected with the oil collecting device (6); the cold water outlet of the end user (9) is respectively connected with the cold water inlet of the heat exchanger (7) and the cold water inlet of the ground source heat pump unit (10); on the one hand, cold water is converted into hot water with hot crude oil in the heat exchanger (7), a hot water outlet of the heat exchanger (7) is connected with a second temperature control three-way valve (13) through a pipeline, and the other two pipelines of the second temperature control three-way valve (13) are respectively connected with a hot water inlet of an end user (9) and an inlet of a buried water pipe (11); the second temperature control three-way valve (13) is used for judging the water temperature from the heat exchanger (7), and when the water temperature reaches the lower temperature limit of the end user (9), the second temperature control three-way valve (13) controls the hot water inlet of the hot water to the end user (9); when the water temperature does not reach the lower temperature limit of the end user (9), the second temperature control three-way valve (13) controls the hot water to be connected with the buried water pipe (11); on the other hand, a cold water outlet of the end user (9) is connected with an inlet of the buried water pipe (11) after passing through the ground source heat pump unit (10), and after heat exchange, the cold water is circulated to the ground source heat pump unit (10) and is led to the end user (9) when the water temperature of the user is required by heating the ground source heat pump unit (10).
2. The solar crude oil heating composite system for regulating the balance of a soil temperature field according to claim 1 is characterized in that temperature separators (3-5) are horizontally arranged in the high-efficiency heat storage layered oil tank (3), separator openings (3-6) are formed in the temperature separators (3-5), an internal oil pipe connected with a hot oil inlet (3-1) of the high-efficiency heat storage layered oil tank (3) passes through the temperature separators (3-5) from top to bottom, a layered inlet (3-8) is formed in each layer of the temperature separators (3-5), heated crude oil flows into the high-efficiency heat storage layered oil tank (3) through the layered inlet (3-8), and a temperature sensor and a temperature control switch are arranged at the hot oil inlet (3-1) so that crude oil with different temperatures flows into different layers, and the temperature of the uppermost crude oil is the highest; the bottom layer of the high-efficiency heat storage layered oil tank (3) is provided with a horizontal porous oil pipe (3-9) and a cold oil inlet (3-7) relatively, and the horizontal porous oil pipe (3-9) is connected with a heating loop oil return pipe (3-3) so that low-temperature oil in the high-efficiency heat storage layered oil tank (3) flows out and circulates back into the sleeve type solar petroleum heater (1); the hot oil outlet (3-4) of the multi-stage two-phase separator (4) is arranged above the uppermost temperature baffle (3-5).
3. The solar crude oil heating composite system for regulating the balance of a soil temperature field according to claim 1, wherein an oil inlet (4-3) is arranged at the upper part of the multi-stage two-phase separator (4), a spiral guide vane (4-8) is arranged below a pipeline extending from the oil inlet (4-3), a primary filter element (4-2) and a secondary filter element (4-1) are sequentially arranged at the tail end of the spiral guide vane (4-8) from top to bottom, a cavity is arranged below the secondary filter element (4-1), the cavity is connected with an oil outlet (4-9) through an oil guide pipe (4-10) from the outside of the multi-stage two-phase separator (4), and a drain outlet (4-11) is arranged at the bottom of the cavity; the upper part of the oil inlet (4-3) is provided with a separator umbrella (4-7), and the top of the multi-stage two-phase separator (4) is provided with an air outlet pipe (4-5) and a safety valve (4-6).
4. The solar crude oil heating composite system for regulating the balance of a soil temperature field according to claim 1, wherein the sleeve type solar crude oil heater (1) comprises an outer water pipe (1-1) and an inner oil pipe (1-2), and water in the outer water pipe (1-1) is heated by solar energy and then uniformly transferred to crude oil in the inner oil pipe (1-2).
5. The solar crude oil heating composite system for regulating the balance of a soil temperature field according to claim 1, wherein the buried water pipe (11) is formed by connecting a plurality of U-shaped water pipes (11-1) in parallel, and the buried oil pipe (12) is formed by connecting a plurality of spiral oil pipes (11-2) in parallel.
6. The solar crude oil heating composite system for regulating the balance of a soil temperature field according to claim 1, wherein a circulating pump (16) is arranged on a pipeline between an outlet of the buried oil pipe (12) and a cold oil inlet of the sleeve type solar petroleum heater (1).
7. The solar crude oil heating composite system for regulating the balance of a soil temperature field according to claim 1, wherein a lifting pump (17) is arranged on a pipeline connected with the oil outlet (4-9) of the multi-stage two-phase separator (4) and the hot oil inlet of the heat exchanger (7).
8. The solar crude oil heating composite system for regulating the balance of a soil temperature field according to claim 3, wherein the separator umbrella (4-7) comprises an upper umbrella plate, a lower umbrella plate and a middle cylinder, the bottom end of the lower umbrella plate is connected with the cylinder of the multistage two-phase separator (4), and a through hole is formed at any position in the circumferential direction; the top surface of the lower umbrella-shaped plate is closed, and the lower umbrella-shaped plate is communicated with the space of the upper umbrella-shaped plate through the cylinder.
9. The solar crude oil heating composite method for regulating the balance of the soil temperature field is characterized by comprising the following specific steps of:
crude oil of the oil supply pipe (14) is pumped into the high-efficiency heat storage layered oil tank (3) by a pump, is returned to the oil pipe (3-3) by a heating loop of the high-efficiency heat storage layered oil tank (3), and is conveyed into the sleeve type solar energy petroleum heater (1) by the circulating pump (16), and after the sleeve type solar energy petroleum heater (1) absorbs solar energy heat, the crude oil is heated; the heated crude oil passes through a first temperature control three-way valve (2), when the oil temperature reaches the lower temperature limit of the high-efficiency heat storage layered oil tank (3), the first temperature control three-way valve (2) controls the crude oil to enter the high-efficiency heat storage layered oil tank (3), and when the oil temperature does not reach the lower temperature limit of the high-efficiency heat storage layered oil tank (3), the first temperature control three-way valve (2) controls the crude oil to be conveyed to an underground oil pipe (12);
the crude oil entering the high-efficiency heat storage layered oil tank (3) enters the multi-stage two-phase separator (4) through a hot oil outlet (3-4), the crude oil entering the multi-stage two-phase separator (4) flows into the lower part of the multi-stage two-phase separator (4) along a spiral guide vane (4-8), after being filtered by a primary filter element (4-2) and a secondary filter element (4-1), the crude oil flows into a cavity at the bottom of the multi-stage two-phase separator (4), water and sediment are discharged from a sewage outlet (4-11), the oil in the cavity passes through an oil outlet (4-9) and is conveyed into a heat exchanger (7) through a lifting pump, heat exchange is carried out between the crude oil and backwater from an end user (9), and the oil after heat exchange enters an oil collecting device (6); oil and gas are separated through a multi-stage two-phase separator (4), and the gas is collected in a gas collecting device (5) from a gas outlet pipe (4-5) at the top of the multi-stage two-phase separator (4); the hot water subjected to heat exchange from the heat exchanger (7) passes through a second temperature control three-way valve (13), and when the water temperature reaches the lower temperature limit of the end user (9), the second temperature control three-way valve (13) controls the hot water to be led to the end user (9); when the water temperature does not reach the lower temperature limit of the end user (9), the second temperature control three-way valve (13) controls the hot water to the buried water pipe (11); after cold water from the end user (9) passes through the ground source heat pump unit (10) and the buried water pipe (11), the cold water is heated to a heat supply temperature by the ground source heat pump unit (10) through soil heat compensation, and finally the cold water is introduced into the end user;
the crude oil after heat exchange and cold oil from a heating loop oil return pipe (3-3) of the high-efficiency heat storage layered oil tank (3) are conveyed to the sleeve type solar oil heater (1) through the circulating pump (16) for reheating.
CN202111294600.XA 2021-11-03 2021-11-03 Solar crude oil heating composite system and method for regulating soil temperature field balance Active CN114001465B (en)

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Application Number Priority Date Filing Date Title
CN202111294600.XA CN114001465B (en) 2021-11-03 2021-11-03 Solar crude oil heating composite system and method for regulating soil temperature field balance

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Application Number Priority Date Filing Date Title
CN202111294600.XA CN114001465B (en) 2021-11-03 2021-11-03 Solar crude oil heating composite system and method for regulating soil temperature field balance

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Publication Number Publication Date
CN114001465A CN114001465A (en) 2022-02-01
CN114001465B true CN114001465B (en) 2024-03-08

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