CN217209894U - Novel heat tracing device for oil field station - Google Patents

Abstract

The utility model relates to a novel heat tracing device for an oil field station, which belongs to the technical field of oil field infusion equipment and comprises a sewage heat exchange unit, a control valve group, a solar heating unit, a heat pump unit and a water using system; a clear water inlet pipeline is connected between the clear water outlet end of the sewage heat exchange unit and the water inlet end of the control valve group; a water outlet end of the control valve group is provided with a first control water pipe and a second control water pipe, the first control water pipe is connected with a water inlet end of the solar heating unit, and the second control water pipe is connected with a water supply and water inlet end of the heat pump unit; the control valve group controls the first control water pipe or the second control water pipe to supply water; the water inlet end of the water system is connected with a water supply main pipeline, the water outlet end of the solar heating unit and the water supply and water outlet end of the heat pump unit are respectively communicated with the water supply main pipeline, and the water return end of the water system and the clear water return end of the sewage heat exchange unit are connected with a water return pipeline. The device can collect the waste heat of the oil field sewage for a long time and provide heat tracing for the transportation of the crude oil pipeline in the station.

Description

Novel heat tracing device for oil field station

Technical Field

The utility model belongs to the technical field of the oil field infusion equipment, concretely relates to novel heat tracing device of oil field station.

Background

Oil products with high condensation point and high viscosity are generally heated and conveyed, and pipelines need to be heated and insulated to prevent the conveyed oil products from being difficult to transport due to temperature reduction, so that a three-pipe hot water heat tracing flow or an electric heating heat tracing flow is generally adopted in the station yard and from the station yard to a wellhead to ensure the conveying temperature. The electric energy adopting the electric tracing technology mainly comes from a national power grid, so that the power consumption cost of the oil field is increased; the traditional three-pipe hot water heat tracing hot water source mainly comes from various fuel boilers, causes excessive carbon dioxide emission, seriously pollutes the environment and is difficult to meet the current carbon emission requirement.

In the production process of an oil field, a large amount of oily sewage with the temperature of 35-50 ℃ is generated along with oil extraction operation, and the waste water carries a large amount of heat energy, so that the waste water is discharged without utilization to cause the waste of the heat energy. The solar energy in the nature is rich, the application is convenient, the solar energy can be utilized in various forms, and the solar energy collection system heating and the photovoltaic power station application are effective means for applying the solar energy technology with high industrial power. With the development of energy storage technology, the heat energy is effectively utilized to provide a heat source for crude oil transportation, and the method has important significance in the aspects of energy conservation, environmental protection and carbon emission reduction.

An existing patent of photovoltaic power generation induction heating system for an oil field well station (patent number: CN201720150626. X). The system mainly comprises a photovoltaic power generation power supply branch, a public power grid power supply branch and an electric induction heat tracing system. The working principle is that the electric induction heater supplies power by using the photovoltaic power generation branch in the daytime and supplies power by using the public power grid branch at night and when the photovoltaic power is small. The problems exist: 1) the photovoltaic power supply system is single and can only be applied when sunlight is good in the daytime; 2) the influence of weather environment is large; 3) the public power supply network has long service time and still has high electricity utilization cost.

The prior solar crude oil heating device (patent number: CN 201220244008.9). The solar energy heat collecting device is mainly composed of a skid-mounted heating device, a solar heat collector array and an overhead oil storage tank. There are problems: 1) the device is small, has single function and can only be suitable for oil pumping and heat preservation of remote well stations; 2) the weather-proof and weather-proof type solar water heater is influenced by the environment and only suitable for the daytime and the weather are better; 3) when the device is insufficient in energy, only network electricity can be used, and electricity utilization cost is influenced.

The prior patent of a comprehensive utilization system for recovering waste heat of oil field sewage (patent number: CN 201721120590.7). The device comprises a sewage heat extraction system, a heat pump unit circulating system, a clear water heat exchange system and a waste heat extraction and utilization system, the working process is that the sewage heat extracts crude oil sewage waste heat, high-temperature hot water is generated by the heat pump unit circulating system and is provided for the clear water heat exchange system, and a hot water application point obtains needed heat energy through the waste heat extraction and utilization system. The problems exist: 1) the temperature of the heat energy extracted from the sewage is limited; 2) the heat pump unit still needs certain electric energy supplement for heat exchange treatment, the electricity is not used for 24 hours, and the electricity consumption cost is still higher; 3) the power supply system does not use new energy technology.

In conclusion, various technologies are single, are influenced by natural conditions, and have short effective utilization time of solar energy; the temperature provided by the waste heat energy of the sewage is limited, and more public electric energy is needed for supplement, so that a new device is researched to solve the problems, and the comprehensive utilization of the energy is inevitable.

SUMMERY OF THE UTILITY MODEL

To the problem that exists among the above-mentioned prior art, the utility model aims to provide a novel heat tracing device of oil field station can collect oil field sewage waste heat for a long time, utilizes heat pump heating technology to and utilize solar energy collection system as the hot water resource, provide the heat tracing for station crude oil pipe-line transportation.

In order to realize the purpose of the utility model, the utility model provides a technical scheme as follows:

a novel heat tracing device for an oil field station comprises a sewage heat exchange unit, a control valve group, a solar heating unit, a heat pump unit and a water using system; the sewage heat exchange unit is used for carrying out heat exchange on the oily sewage; a clear water inlet pipeline is connected between the clear water outlet end of the sewage heat exchange unit and the water inlet end of the control valve group; a first control water pipe and a second control water pipe are arranged at the water outlet end of the control valve group, the first control water pipe is connected with the water inlet end of the solar heating unit, and the second control water pipe is connected with the water supply and water inlet end of the heat pump unit; the control valve group controls the first control water pipe or the second control water pipe to supply water; the water supply system is characterized in that a water inlet end of the water utilization system is connected with a water supply main pipeline, a water outlet end of the solar heating unit and a water supply water outlet end of the heat pump unit are respectively communicated with the water supply main pipeline, and a water return end of the water utilization system and a clear water return end of the sewage heat exchange unit are connected with a water return pipeline.

Preferably, the sewage heat exchange unit comprises a sewage water supply pipe and a sewage heat exchanger, wherein the sewage water supply pipe is connected with a sewage water inlet end of the sewage heat exchanger; a first stop valve, a filter and a first booster pump are sequentially arranged on the sewage water supply pipe; the first booster pump is positioned at one end close to the sewage heat exchanger; the sewage heat exchanger's sewage return water end is connected with the sewage wet return, be provided with the second stop valve on the sewage wet return.

Preferably, the solar heat pump system further comprises a control module, and the control module controls the working states of the control valve group, the solar heating unit and the heat pump unit.

Preferably, the control valve group comprises a two-position three-way electromagnetic valve a, a first branch pipe is connected between the clean water inlet pipeline and the first control water pipe, and a third stop valve is arranged on the first branch pipe; a second branch pipe is connected between the clean water inlet pipeline and the second control water pipe, and a fourth stop valve is arranged on the second branch pipe; a third branch pipe is connected between the clean water inlet pipeline and the water inlet end of the two-position three-way electromagnetic valve a, and a fifth stop valve is arranged on the third branch pipe; one water outlet end of the two-position three-way electromagnetic valve a is connected with the first control water pipe, and the other water outlet end of the two-position three-way electromagnetic valve a is connected with the second control water pipe; the solar heating unit is provided with a first temperature sensor for detecting the temperature of water stored in the solar heating unit; the control module obtains the temperature value of the first temperature sensor and controls the two-position three-way electromagnetic valve a to be powered on or powered off, and the two-position three-way electromagnetic valve a is communicated with the first control water pipe or the second control water pipe based on power on or power off.

Preferably, the solar heating unit comprises a plurality of first heat collector groups and at least one second heat collector group; the first temperature sensor is arranged on the first heat collector group; a sixth stop valve is connected between the first heat collector group and the first control water pipe; an electromagnetic valve a is arranged between the second heat collector group and the first control water pipe; a second temperature sensor is arranged on the water supply main pipeline; the control module controls the electromagnetic valve a to be opened or closed based on the temperature value of the second temperature sensor; the water outlet end of the solar heating unit is provided with a first water supply branch pipe, the first water supply branch pipe is connected with the water supply main pipeline, and a seventh stop valve is arranged on the first water supply branch pipe.

Preferably, a water supply and outlet end of the heat pump unit is connected with a second water supply branch pipe, and an eighth stop valve is arranged on the second water supply branch pipe; the water return pipeline comprises a first water return pipeline section and a second water return pipeline section, the first water return pipeline section is positioned at one end of the water using system, the second water return pipeline section is connected with the sewage heat exchange unit, the tail end of the first water return pipeline section is connected with a two-position three-way electromagnetic valve b and is communicated with a water inlet of the first water return pipeline section, a water outlet of the two-position three-way electromagnetic valve b is connected with a water return inlet end of the heat pump unit, and a water return outlet end of the heat pump unit is connected with the second water return pipeline section; the other water outlet of the two-position three-way electromagnetic valve b is connected with a water return branch pipe, and the other end of the water return branch pipe is connected with the second water return pipe section; when the two-position three-way electromagnetic valve a is communicated with the first control water pipe, the control module controls the two-position three-way electromagnetic valve b to be communicated with the water return branch pipe; when the two-position three-way electromagnetic valve a is communicated with the second control water pipe, the control module controls the two-position three-way electromagnetic valve b to be communicated with a water return and inlet end of the heat pump unit.

Preferably, the fresh water supply system further comprises a fresh water supply assembly, the fresh water supply assembly comprises a water tank, a fresh water supply pipe is connected between the water tank and the second water return pipe section, a second booster pump is arranged on the fresh water supply pipe, and a pressure sensor is arranged on the water supply main pipeline; the control module controls the second booster pump to be turned on or off based on a pressure value detected by the pressure sensor.

Preferably, the water tank is connected with a water replenishing pipeline, the other end of the water replenishing pipeline is provided with a water source well, the water replenishing pipeline is provided with a water pump and an electromagnetic valve c, a floating ball is arranged in the water tank, and the floating ball controls the electromagnetic valve c to be opened or closed.

Preferably, the control module comprises a photovoltaic power station, a voltage converter and a grid-connected inverter, wherein the voltage converter and the grid-connected inverter are connected with the photovoltaic power station; the voltage converter is connected with the grid-connected inverter in parallel; the voltage converter is connected with an energy storage unit and a control cabinet, the control cabinet receives electric signals of the first temperature sensor, the second temperature sensor and the pressure sensor and controls the electromagnetic valve a, the electromagnetic valve c, the two-position three-way electromagnetic valve a, the two-position three-way electromagnetic valve b and the heat pump unit to work or stand by.

The utility model provides a pair of novel heat tracing device of oil field station possesses following beneficial effect:

1. the sewage heat exchange unit, the solar heating unit, the heat pump unit, the water using system and the control module acquire primary heat energy through the sewage heat exchange unit, and the solar heat collection heating or the heat pump unit of the solar heating unit heats the water using system to a required temperature. The control module mainly provides necessary electric energy for the heat pump unit and the control system, and redundant electric energy can also be used for other electric appliances in the station yard.

2. The utility model discloses a sewage heat exchange unit passes through the booster pump with the sewage after filtering and inputs sewage heat exchanger, sewage heat exchanger adopts general plate heat exchanger to draw the heat source, mainly be with the oily sewage about 45 ℃ in oil field as the heat supply source, carry out the heat exchange through plate heat exchanger and circulation clear water, because clear water circulation system's water inlet temperature is lower, consequently can draw sewage heat through sewage heat exchanger, improve the circulation clear water temperature of sewage heat exchanger export to 40 ℃, the work of not shutting down usually for a long time of this system.

3. The utility model discloses heating system mainly includes heat pump set, solar heating unit. The control valve set determines that the heat pump set and the solar heating system work alternately, and the heating system supplies heat without stopping all the day.

4. The utility model discloses heat pump unit system is main heating device, and the liquid refrigerant of the low temperature low pressure of unit absorbs the heat at water source in the evaporimeter, becomes the gaseous state by liquid, becomes high temperature high pressure gaseous state through the compressor compression, and the highly compressed gaseous refrigerant of high temperature is by condenser and hot water heat exchanger heat transfer, so circulation, produces high temperature hot water. In order to improve the efficiency, a heat pump unit system adopts a multi-stage unit, the temperature can be adjusted step by step, and the temperature of output water is controlled to be between 55 ℃ and 70 ℃. Whether the heat pump unit works is determined by the control of the device electric control cabinet.

5. The utility model discloses solar heating system falls into the multiunit heating, can this first thermal-arrest group of manual control get into or withdraw from heating system. The second heat collector group is provided with an electromagnetic valve a, the on-off state of the electromagnetic valve a is determined by the temperature detected by a second temperature sensor at the main outlet of the heating system, the control process is completed by a control module, and the temperature range of the circulating outlet water is automatically controlled to be 55-70 ℃. Because the solar heating unit is an auxiliary heating system and can only work when the ambient temperature is higher in the daytime, a first temperature sensor is arranged in the solar heating system and detects the temperature of the circulating water in a first heat collector group, when the temperature of the circulating water is higher than a set value, a temperature signal is sent to a control module to control a two-position three-way electromagnetic valve a to guide to the solar heating system, and circulating clear water is selected to enter the solar heating device. When the temperature of the circulating water is lower than a set value, the system electric control cabinet controls the two-position three-way electromagnetic valve a to selectively guide to the heat pump heating system, circulating clear water enters the heat pump heating device, and meanwhile, the electric control cabinet controls the heat pump unit switch to be switched on, so that the heat pump heating system starts to work.

6. The control valve group of the utility model can automatically or manually select to circulate the clear water to the set of heating device.

7. The utility model provides a set of brand new heat supply system through the sewage heat exchange unit, the solar heating unit, the heat pump unit, the water system and the control module, the system can collect the waste heat of the oil field sewage for a long time, utilize the heat pump heating technology and utilize the solar heat collection system as the hot water resource, and provide the heat tracing for the crude oil pipeline transportation of the station; the solar photovoltaic power station and the energy storage battery are used for providing a main power supply for station related equipment, so that the all-weather work of a heating system is ensured; renewable energy in the nature is fully applied, carbon emission is reduced, electric energy of a public power grid in a well site is saved, the environment is protected, and the method has important significance for energy conservation and consumption reduction of an oil field and social environmental protection effects.

Drawings

FIG. 1 is a schematic structural view of a novel heat tracing device of an oil field station of the present invention;

FIG. 2 is a structural diagram of a sewage heat exchange unit in the novel heat tracing device of the oil field station;

FIG. 3 is a schematic view showing the connection between the salient control valve set and the solar heating unit and the heat pump unit in the novel heat tracing device of the oil field station of the present invention;

fig. 4 is an electrical control schematic diagram of the salient control module in the novel heat tracing device of the oil field station.

Reference numbers in the figures:

100. a sewage heat exchange unit; 110. a sewage supply pipe; 120. a sewage heat exchanger; 130. a first shut-off valve; 140. a filter; 150. a first booster pump; 160. a sewage return pipe; 170. a second stop valve;

200. a control valve group; 210. a first control water pipe; 220. a second control water pipe; 230. a two-position three-way electromagnetic valve a; 240. a first branch pipe; 241. a third stop valve; 250. a second branch pipe; 251. a fourth stop valve; 260. thirdly, pipe distribution; 261. a fifth stop valve;

300. a solar heating unit; 310. a first collector group; 311. a sixth stop valve; 320. a second heat collector group; 321. an electromagnetic valve a; 330. a first water supply branch pipe; 331. a seventh stop valve;

400. a heat pump unit; 410. a second water supply branch pipe; 411. an eighth stop valve; 420. a two-position three-way electromagnetic valve b;

500. a control module; 510. a first temperature sensor; 520. a second temperature sensor; 530. a photovoltaic power station; 540. a voltage converter; 550. a grid-connected inverter; 560. an energy storage unit; 570. a control cabinet;

600. a clear water inlet pipe;

700. a clear water supply assembly; 710. a water tank; 720. a clean water supply pipe; 730. a second booster pump; 740. a pressure sensor; 750. a water replenishing pipeline; 760. a source well; 770. a water pump; 780. a solenoid valve c; 790. a floating ball;

800. a water use system; 810. a water supply main pipe; 820. a water return pipe; 821. a first water return pipe section; 822. a second return water pipe section; 823. a return branch pipe.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

The utility model provides a novel heat tracing device of oil field station, refer to fig. 1-4, including sewage heat exchange unit 100, valves 200, solar heating unit 300, heat pump unit 400, water system 800. Wherein, the sewage heat exchange unit 100 performs heat exchange on the oily sewage; a clear water inlet pipeline 600 is connected between the clear water outlet end of the sewage heat exchange unit 100 and the water inlet end of the control valve bank 200; a first control water pipe 210 and a second control water pipe 220 are arranged at the water outlet end of the control valve group 200, the first control water pipe 210 is connected with the water inlet end of the solar heating unit 300, and the second control water pipe 220 is connected with the water supply and water inlet end of the heat pump unit 400; the control valve group 200 controls the first control water pipe 210 or the second control water pipe 220 to supply water; the water inlet end of the water system 800 is connected with a water supply main pipe 810, the water outlet end of the solar heating unit 300 and the water supply water outlet end of the heat pump unit 400 are respectively communicated with the water supply main pipe 810, and the water return end of the water system 800 and the clear water return end of the sewage heat exchange unit 100 are connected with a water return pipe 820. When the system works, oily sewage is subjected to heat exchange with clean water through the sewage heat exchange unit 100, the temperature of the clean water after heat exchange is about 40 ℃, the clean water after heat exchange is subjected to temperature increase further through the control valve group 200 by the solar heating unit 300 or the heat pump unit 400, and then the clean water is conveyed to the water utilization system 800 to be distributed and used by a well station as required.

The sewage heat exchange unit 100 includes a sewage water supply pipe 110 and a sewage heat exchanger 120, the sewage water supply pipe 110 is connected to a sewage water inlet end of the sewage heat exchanger 120; a first stop valve 130, a filter 140 and a first booster pump 150 are sequentially provided on the sewage supply pipe 110; the first booster pump 150 is located near one end of the sewage heat exchanger 120; a sewage return pipe 160 is connected to a sewage return end of the sewage heat exchanger 120, and a second stop valve 170 is disposed on the sewage return pipe 160. In operation, the oily sewage passes through the filter 140 and then continuously enters the sewage heat exchanger 120 to exchange heat with clean water by the first booster pump 150. The heat-exchanged sewage is re-injected through the sewage return pipe 160. Specifically, the sewage heat exchanger 120 is a plate-type sewage heat exchanger.

The solar heating system further comprises a control module 500, wherein the control module 500 controls the working states of the control valve group 200, the solar heating unit 300 and the heat pump unit 400.

The control valve group 200 comprises a two-position three-way electromagnetic valve a230, a first branch pipe 240 is connected between the clear water inlet pipeline 600 and the first control water pipe 210, and a third stop valve 241 is arranged on the first branch pipe 240; a second branch pipe 250 is connected between the clean water inlet pipe 600 and the second control water pipe 220, and a fourth stop valve 251 is arranged on the second branch pipe 250; a third branch pipe 260 is connected between the clear water inlet pipeline 600 and the water inlet end of the two-position three-way electromagnetic valve a230, and a fifth stop valve 261 is arranged on the third branch pipe 260; one water outlet end of the two-position three-way electromagnetic valve a230 is connected with the first control water pipe 210, and the other water outlet end is connected with the second control water pipe 220; through the above arrangement, in the working process, the fifth stop valve 261 can be selectively closed, the third stop valve 241 or the fourth stop valve 251 can be manually opened, and the clean water can be manually switched to be circulated to the solar heating unit 300 or the heat pump unit 400 for heating. Or the third and fourth stop valves 241 and 251 are closed, the fifth stop valve 261 is opened, and the clean water is controlled to enter the first control water pipe 210 or the second control water pipe 220 by the two-position three-way electromagnetic valve a 230.

Specifically, the solar heating unit 300 is provided with a first temperature sensor 510 for detecting the temperature of the water stored therein; the control module 500 obtains a temperature value of the first temperature sensor 510 and controls the two-position three-way solenoid valve a230 to be powered on or off, and the two-position three-way solenoid valve a230 is connected to the first control water pipe 210 or the second control water pipe 220 based on the power on or off. When the temperature value of the first temperature sensor 510 acquired by the control module 500 is greater than fifty degrees celsius, the two-position three-way solenoid valve a230 is controlled to be communicated with the first control water pipe 210. And when the temperature value is less than fifty ℃, controlling the two-position three-way electromagnetic valve a230 to be communicated with the second control water pipe 220. Specifically, the two-position three-way solenoid valve a230 may be controlled to be powered on or off, for example, the first control water pipe 210 is connected when the two-position three-way solenoid valve is powered on, and the second control water pipe 220 is connected when the two-position three-way solenoid valve is powered off. The fifty degrees celsius is a set value, and may be other values, which is not limited herein.

The solar heating unit 300 includes a plurality of first heat collector groups 310 and at least one second heat collector group 320; the first heat collector group 310 is provided with a first temperature sensor 510; the first temperature sensor 510 is used for detecting the temperature value of the clean water in the first heat collector group 310. During use or when not in use, fresh water remains inside the first temperature sensor 510.

A sixth stop valve 311 is connected between the first heat collector group 310 and the first control water pipe 210; an electromagnetic valve a321 is arranged between the second heat collector group 320 and the first control water pipe 210; the water supply main pipe 810 is provided with a second temperature sensor 520; the control module 500 controls the solenoid valve a321 to be opened or closed based on the temperature value of the second temperature sensor 520. In operation, the heat output from the first heat collector group 310 can be controlled by manually controlling the different sixth stop valves 311. Secondly, the temperature value of the inlet water in the water supply main pipe 810 can be detected in real time through the second temperature sensor 520, and whether the second heat collector group 320 participates in the heating work is controlled by controlling the opening and closing of the electromagnetic valve a 321.

Preferably, when the heat pump unit 400 is used to supply heat, the control module 500 obtains the temperature value of the second temperature sensor 520, and controls the heat pump unit 400 to participate in heating based on the temperature value.

The water outlet end of the solar heating unit 300 is provided with a first water supply branch pipe 330, the first water supply branch pipe 330 is connected with a water supply main pipeline 810, and the first water supply branch pipe 330 is provided with a seventh stop valve 331.

The water return pipe 820 includes a first water return pipe segment 821 at one end of the water using system 800 and a second water return pipe segment 822 connected to the sewage heat exchange unit 100.

The water supply and outlet end of the heat pump unit 400 is connected with a second water supply branch pipe 410, and an eighth stop valve 411 is arranged on the second water supply branch pipe 410; the tail end of the first water return pipe segment 821 is connected with a two-position three-way electromagnetic valve b420 and is communicated with a water inlet of the two-position three-way electromagnetic valve b420, one water outlet of the two-position three-way electromagnetic valve b420 is connected with a water return inlet end of the heat pump unit 400, and a water return outlet end of the heat pump unit 400 is connected with a second water return pipe segment 822; the other water outlet of the two-position three-way electromagnetic valve b420 is connected with a water return branch pipe 823, and the other end of the water return branch pipe 823 is connected with the second water return pipe section 822; when the two-position three-way electromagnetic valve a230 is communicated with the first control water pipe 210, the control module 500 controls the two-position three-way electromagnetic valve b420 to be communicated with the water return branch pipe 823; when the two-position three-way solenoid valve a230 is communicated with the second control water pipe 220, the control module 500 controls the two-position three-way solenoid valve b420 to be communicated with the water return and inlet end of the heat pump unit 400. In general, when the heat pump unit 400 is used for heating, the two-position three-way solenoid valve b420 is communicated with the heat pump unit 400, and when the solar heating unit 300 is used for heating, the two-position three-way solenoid valve b420 is controlled to be communicated with the water return branch pipe 823.

The heat tracing device further comprises a clean water supply assembly 700, wherein the clean water supply assembly 700 is communicated with the second water return pipe section 822 and automatically supplies clean water to the clean water supply assembly when the water pressure is low.

The clean water supply assembly 700 comprises a water tank 710, a clean water supply pipe 720 is connected between the water tank 710 and a second water return pipe section 822, a second booster pump 730 is arranged on the clean water supply pipe 720, and a pressure sensor 740 is arranged on a water supply main pipe 810; the control module 500 controls the second booster pump 730 to be turned on or off based on the pressure value detected by the pressure sensor 740.

The water tank 710 is connected with a water supplementing pipeline 750, the other end of the water supplementing pipeline 750 is provided with a water source well 760, the water supplementing pipeline 750 is provided with a water pump 770 and an electromagnetic valve c780, a floating ball 790 is arranged in the water tank 710, and the floating ball 790 controls the electromagnetic valve c780 to be opened or closed. The float 790 is a float level switch, and controls the electromagnetic valve to open or close, so that the water is replenished into the water tank 710 through the water pump 770 when the water in the water tank 710 is lower than a set position, and the water is stopped when the water level is higher than the set position.

The control module 500 includes a photovoltaic power plant 530, a voltage converter 540 connected to the photovoltaic power plant 530, and a grid-connected inverter 550; the voltage converter 540 is connected in parallel with the grid-connected inverter 550; the photovoltaic power station 530 includes multiple groups of photovoltaic cells, and the grid-connected inverter 550 is configured to convert direct current into alternating current to provide a power source for the power system. The voltage converter 540 is connected with an energy storage unit 560 and a control cabinet 570, and the control cabinet 570 receives electrical signals of the first temperature sensor 510, the second temperature sensor 520 and the pressure sensor 740, and controls the electromagnetic valve a321, the electromagnetic valve c780, the two-position three-way electromagnetic valve a230, the two-position three-way electromagnetic valve b420 and the heat pump unit 400 to work or stand by. The energy storage unit is used for storing electric energy.

Specifically, the water system 800 includes an oil well heat tracing, an in-field heat tracing domestic water heat exchanger, etc., which are not described herein again.

The utility model provides a novel heat tracing device of oil field station, its working process specifically as follows:

the first booster pump 150 controls the oil-containing sewage to enter the sewage heat exchanger 120 for heat exchange after being pressurized by the first stop valve 130, the filter 140 and the first booster pump 150, and the sewage after heat exchange is reinjected by the sewage water return pipe 160. Wherein the temperature of the sewage is about 45 ℃, and the temperature of the clean water after heat exchange is kept at 40 ℃. The clean water enters the control valve group 200 through the clean water inlet pipe 600.

In the control valve set 200, the third stop valve 241, the fourth stop valve 251 and the fifth stop valve 261 can be selectively and manually controlled, and the solar heating unit 300 or the heat pump unit 400 can be selectively and automatically controlled by selecting manual selection or the two-position three-way electromagnetic valve a230 to perform heating operation.

When the two-position three-way electromagnetic valve a230 is selected to automatically control the solar heating unit 300 or the heat pump unit 400 to perform heating operation. The control module 500 obtains the temperature value detected by the first temperature sensor 510 in real time, when the detected temperature value does not reach the set temperature value, for example, 50 ℃. The control module 500 controls the two-position three-way solenoid valve a230 to communicate with the heat pump unit 400, and at the moment, the heat pump unit 400 works. The circulating clear water enters the heat pump unit 400 to be heated, meanwhile, the second temperature sensor 520 detects the temperature value of the clear water in the water supply main pipeline 810 in real time, then the heat pump unit 400 is controlled to heat the circulating clear water in real time, and further the water outlet temperature is controlled to be 55-70 ℃. Is transported to a water using system 800 through a heat preservation pipeline and then is distributed for use by a well station according to the requirement. The heat traced clean water passes through the first water return pipe 821 and then enters the two-position three-way solenoid valve b420, enters the heat pump unit 400 through the water return inlet end, passes through the water return outlet end of the heat pump unit 400 and enters the second water return pipe 822, and finally returns to the sewage heat exchanger 120 again for heat exchange.

When sunlight is strong in the daytime, the temperature value detected by the first temperature sensor 510 reaches a set temperature value, for example, 50 ℃. At this time, the two-position three-way solenoid valve a230 controls and communicates the solar heating unit to perform heating operation. In the process, the sixth stop valve 311 can be manually operated to control the plurality of first heat collector groups 310, so as to manually adjust the water temperature. Meanwhile, the second temperature sensor 520 detects the temperature value of the fresh water in the water supply main pipe 810, and when the water temperature is lower than a first set value, for example, 55 ℃, the control solenoid valve a321 is communicated with the second heat collector group 320 to provide the heating efficiency of the solar heating unit 300, and further provide the temperature value of the fresh water in the water supply main pipe 810. When it is detected that the temperature value is greater than a second set value, for example 70 deg.c. At this time, the control solenoid valve a321 turns off the second heat collector group 320, reducing the heating efficiency. Thereby keeping the temperature of the fresh water in the water mains 810 within a certain range.

In the process of using the clean water for the circulation heat tracing, the pressure sensor 740 detects the pressure value of the clean water in the water supply main pipe 810 in real time, and when the pressure value is detected to be reduced to a set value, the control module 500 obtains the electric signal and controls the clean water supply assembly 700 to supply water, thereby ensuring that the heat tracing clean water in the pipe is kept within a proper pressure range value, for example, 0.7-1.1 MPa.

In the whole process, the photovoltaic power station 530 is mainly used for supplying power, and the photovoltaic power station 530 stores electricity by using solar energy resources in the daytime. Meanwhile, the electric energy is stored in the energy storage unit 560 through the voltage converter 540, and the electric energy stored in the energy storage unit 560 enters the grid-connected converter at night to invert the direct current into the alternating current to enter a public power grid, so that the alternating current is used by equipment such as the heat pump unit 400 and a station load.

The utility model discloses an above-mentioned technical scheme possesses following technological effect:

1. the sewage heat exchange unit 100, the solar heating unit 300, the heat pump unit 400, the water consumption system 800 and the control module 500 obtain preliminary heat energy through the sewage-containing heat exchange unit 100, and the preliminary heat energy is heated to a required temperature through solar heat collection of the solar heating unit 300 or the heat pump unit 400, so that the water consumption system 800 can be used. The control module 500 mainly provides necessary electric energy for the heat pump unit 400 and the control system, and the redundant electric energy can also be used for other electric appliances in the station yard.

2. The utility model discloses a sewage heat exchange unit 100 passes through the booster pump with the sewage after filtering and inputs sewage heat exchanger 120, sewage heat exchanger 120 adopts general plate heat exchanger to draw the heat source, mainly be with the oily sewage about 45 ℃ in oil field as the heat supply source, carry out the heat exchange through plate heat exchanger and circulation clear water, because clear water circulation system's water inlet temperature is lower, consequently can draw the sewage heat through sewage heat exchanger 120, the circulation clear water temperature with the export of sewage heat exchanger 120 improves to 40 ℃, this system does not shut down the work for a long time usually.

3. The utility model discloses heating system mainly includes heat pump set 400, solar heating unit 300. The control valve set 200 determines that the heat pump unit 400 and the solar heating system work alternately, and the heating system does not stop to supply heat all day long.

4. The utility model discloses heat pump set 400 system is main heating device, and the liquid refrigerant of the low temperature low pressure of unit absorbs the heat at water source in the evaporimeter, becomes gaseous state by liquid, becomes high temperature high pressure gaseous state through the compressor compression, and the highly compressed gaseous refrigerant of high temperature is by condenser and hot water heat exchanger heat transfer, so circulation, produces high temperature hot water. In order to improve the efficiency, the heat pump unit 400 system adopts a multi-stage unit, the temperature can be adjusted step by step, and the temperature of the output water is controlled to be between 55 ℃ and 70 ℃. Whether the heat pump unit 400 works or not is determined by the control of the device electric control cabinet.

5. The solar heating system of the present invention is divided into multiple heating groups, and the first heat collector group 310 of the group can be manually controlled to enter or exit the heating system. The second heat collector group 320 is provided with an electromagnetic valve a321, the on-off state of the electromagnetic valve a321 is determined by the temperature detected by the second temperature sensor 520 at the main outlet of the heating system, the control process is completed by the control module 500, and the temperature range of the circulating outlet water is automatically controlled to be 55-70 ℃. Since the solar heating unit 300 is an auxiliary heating system and can only work when the ambient temperature is high in the daytime, the first temperature sensor 510 is installed in the solar heating system, the first temperature sensor 510 detects the temperature of the circulating water in the first heat collector group 310, and when the temperature of the circulating water is higher than a set value, the temperature signal is sent to the control module 500 to control the two-position three-way electromagnetic valve a230 to guide the circulating water to the solar heating system, and the circulating clear water is selected to enter the solar heating device. When the temperature of the circulating water is lower than a set value, the system electric control cabinet 570 controls the two-position three-way electromagnetic valve a230 to selectively guide the circulating clear water to the heat pump heating system, the circulating clear water enters the heat pump heating device, and meanwhile, the electric control cabinet controls the switch of the heat pump unit 400 to be powered on, and the heat pump heating system starts to work.

6. The control valve set 200 of the present invention can automatically or manually select to circulate the clean water to the set of heating devices.

7. The utility model provides a set of brand new heat supply system through the sewage heat exchange unit 100, the solar heating unit 300, the heat pump unit 400, the water system 800 and the control module 500, the system can collect the waste heat of the oil field sewage for a long time, utilize the heat pump heating technology, and utilize the solar heat collection system as the hot water resource, provide the heat tracing for the crude oil pipeline transportation of the station; the solar photovoltaic power station 530 and the energy storage battery are used for providing a main power supply for relevant equipment of a station yard, so that the all-weather work of a heating system is ensured; renewable energy in the nature is fully applied, carbon emission is reduced, electric energy of a public power grid in a well site is saved, the environment is protected, and the method has important significance for energy conservation and consumption reduction of an oil field and social environmental protection effects.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected" and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediate medium, and connected to each other inside two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In the case of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other.

The above-mentioned embodiments only express the embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (9)

1. A novel heat tracing device for an oil field station is characterized by comprising a sewage heat exchange unit (100), a control valve group (200), a solar heating unit (300), a heat pump unit (400) and a water using system (800);

the sewage heat exchange unit (100) exchanges heat with the oily sewage;

a clear water inlet pipeline (600) is connected between the clear water outlet end of the sewage heat exchange unit (100) and the water inlet end of the control valve group (200);

a first control water pipe (210) and a second control water pipe (220) are arranged at the water outlet end of the control valve group (200), the first control water pipe (210) is connected with the water inlet end of the solar heating unit (300), and the second control water pipe (220) is connected with the water supply and water inlet end of the heat pump unit (400); the control valve group (200) controls the first control water pipe (210) or the second control water pipe (220) to supply water;

the water supply system is characterized in that a water inlet end of the water utilization system (800) is connected with a water supply main pipeline (810), a water outlet end of the solar heating unit (300) and a water supply water outlet end of the heat pump unit (400) are respectively communicated with the water supply main pipeline (810), and a water return end of the water utilization system (800) and a clear water return end of the sewage heat exchange unit (100) are connected with a water return pipeline (820).

2. The novel heat tracing device of the oilfield station according to claim 1, wherein the sewage heat exchange unit (100) comprises a sewage water supply pipe (110) and a sewage heat exchanger (120), the sewage water supply pipe (110) is connected with a sewage water inlet end of the sewage heat exchanger (120);

a first stop valve (130), a filter (140) and a first booster pump (150) are sequentially arranged on the sewage water supply pipe (110); the first booster pump (150) is positioned at one end close to the sewage heat exchanger (120);

the sewage return end of the sewage heat exchanger (120) is connected with a sewage return pipe (160), and a second stop valve (170) is arranged on the sewage return pipe (160).

3. The novel heat tracing device for the oilfield sites according to claim 1, further comprising a control module (500), wherein the control module (500) controls the operating states of the control valve set (200), the solar heating unit (300) and the heat pump unit (400).

4. The novel heat tracing device of oilfield stations according to claim 3, characterized in that the control valve group (200) comprises a two-position three-way solenoid valve a (230),

a first branch pipe (240) is connected between the clean water inlet pipeline (600) and the first control water pipe (210), and a third stop valve (241) is arranged on the first branch pipe (240);

a second branch pipe (250) is connected between the clean water inlet pipeline (600) and the second control water pipe (220), and a fourth stop valve (251) is arranged on the second branch pipe (250);

a third branch pipe (260) is connected between the clear water inlet pipeline (600) and the water inlet end of the two-position three-way electromagnetic valve a (230), and a fifth stop valve (261) is arranged on the third branch pipe (260); one water outlet end of the two-position three-way electromagnetic valve a (230) is connected with the first control water pipe (210), and the other water outlet end of the two-position three-way electromagnetic valve a is connected with the second control water pipe (220);

the solar heating unit (300) is provided with a first temperature sensor (510) for detecting the temperature of water stored in the solar heating unit;

the control module (500) acquires a temperature value of the first temperature sensor (510) and controls the two-position three-way solenoid valve a (230) to be powered on or off, and the two-position three-way solenoid valve a (230) is communicated with the first control water pipe (210) or the second control water pipe (220) based on the power-on or power-off.

5. The novel heat tracing device of the oilfield site as defined by claim 4, wherein:

the solar heating unit (300) comprises a plurality of first heat collector groups (310) and at least one second heat collector group (320); the first temperature sensor (510) is arranged on the first heat collector group (310);

a sixth stop valve (311) is connected between the first heat collector group (310) and the first control water pipe (210); an electromagnetic valve a (321) is arranged between the second heat collector group (320) and the first control water pipe (210);

a second temperature sensor (520) is arranged on the water supply main pipeline (810); the control module (500) controls the electromagnetic valve a (321) to be opened or closed based on the temperature value of the second temperature sensor (520);

the water outlet end of the solar heating unit (300) is provided with a first water supply branch pipe (330), the first water supply branch pipe (330) is connected with the water supply main pipeline (810), and a seventh stop valve (331) is arranged on the first water supply branch pipe (330).

6. The novel heat tracing device of the oilfield station according to claim 4, wherein a water supply outlet end of the heat pump unit (400) is connected with a second water supply branch pipe (410), and an eighth stop valve (411) is arranged on the second water supply branch pipe (410);

the water return pipeline (820) comprises a first water return pipe section (821) positioned at one end of the water using system (800) and a second water return pipe section (822) connected with the sewage heat exchange unit (100),

the tail end of the first water return pipe section (821) is connected with a two-position three-way electromagnetic valve b (420) and is communicated with a water inlet of the first water return pipe section, one water outlet of the two-position three-way electromagnetic valve b (420) is connected with a water return inlet end of the heat pump unit (400), and a water return outlet end of the heat pump unit (400) is connected with the second water return pipe section (822);

the other water outlet of the two-position three-way electromagnetic valve b (420) is connected with a water return branch pipe (823), and the other end of the water return branch pipe (823) is connected with the second water return pipe section (822);

when the two-position three-way electromagnetic valve a (230) is communicated with the first control water pipe (210), the control module (500) controls the two-position three-way electromagnetic valve b (420) to be communicated with the water return branch pipe (823); when the two-position three-way electromagnetic valve a (230) is communicated with the second control water pipe (220), the control module (500) controls the two-position three-way electromagnetic valve b (420) to be communicated with a water return and inlet end of the heat pump unit (400).

7. The novel heat tracing device of the oil field station according to claim 6, characterized in that it further comprises a clean water supply assembly (700), the clean water supply assembly (700) comprises a water tank (710), a clean water supply pipe (720) is connected between the water tank (710) and the second return pipe section (822), a second booster pump (730) is arranged on the clean water supply pipe (720), and a pressure sensor (740) is arranged on the water supply main pipe (810); the control module (500) controls the second booster pump (730) to be turned on or off based on a pressure value detected by the pressure sensor (740).

8. The novel heat tracing device of the oil field station according to claim 7, characterized in that the water tank (710) is connected with a water supply pipeline (750), the other end of the water supply pipeline (750) is provided with a water source well (760), the water supply pipeline (750) is provided with a water pump (770) and an electromagnetic valve c (780), the water tank (710) is provided with a floating ball (790), and the floating ball (790) controls the electromagnetic valve c (780) to be opened or closed.

9. The oilfield site novel heat tracing apparatus according to claim 5, wherein the control module (500) comprises a photovoltaic power station (530), a voltage converter (540) connected to the photovoltaic power station (530), and a grid-connected inverter (550); the voltage converter (540) and the grid-connected inverter (550) are connected in parallel;

the voltage converter (540) is connected with an energy storage unit (560) and a control cabinet (570), and the control cabinet (570) receives electric signals of the first temperature sensor (510), the second temperature sensor (520) and the pressure sensor (740) and controls the electromagnetic valve a (321), the electromagnetic valve c (780), the two-position three-way electromagnetic valve a (230), the two-position three-way electromagnetic valve b (420) and the heat pump unit (400) to work or stand by.

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