High-power electric phase change heating furnace device

Abstract

The invention provides a high-power electric phase change heating furnace device. The high-power electric phase change heating furnace device comprises a steam generator, at least one electric heater, a heat exchanger, a heating coil, at least one remote temperature transmitter and a control system, the electric heater is arranged on the steam generator and can heat liquid in the containing cavity so that the steam generator can generate steam. The heat exchanger is provided with a heat exchange cavity, and the heat exchange cavity communicates with the containing cavity so that steam generated by the steam generator can enter the heat exchange cavity. The heating coil pipe is arranged in the heat exchange cavity, a medium to be heated flows through the interior of the heating coil pipe, and the medium to be heated exchanges heat with steam in the heat exchange cavity; the remote temperature transmitter is arranged at the outlet end of the heating coil; the control system is in signal connection with the electric heater and the remote transmission temperature transmitter, and the control system adjusts the heating power of the electric heater according to temperature signals sent by the remote transmission temperature transmitter. The problems that in the prior art, a device is large in carbon emission amount and low in automation degree are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of crude oil gathering and transportation, and in particular to a high-power electric phase change heating furnace device. Background Art

[0002] Most of the existing wellhead and station heating equipment uses natural gas or heavy oil as fuel, and a large amount of natural gas (heavy oil) is consumed every year. With the increasingly stringent environmental emission requirements, some equipment still has carbon emissions, excessive nitrogen oxides, and substandard thermal efficiency. In order to reduce the demand for fossil fuels, researching and implementing electric energy to replace oil (gas) in heating furnaces is a key technology to solve the above problems. However, there is currently no mature application experience in high-power (above 2000KW) electric heating furnaces in China, and the degree of automation is low. Therefore, the existing technology needs to solve the problems of reasonable layout of the device structure, and how to achieve step-by-step power regulation of the device to achieve stable operation of the device. Summary of the invention

[0003] The main purpose of the present invention is to provide a high-power electric phase change heating furnace device to solve the problems of large carbon emissions and low automation in the prior art.

[0004] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a high-power electric phase change heating furnace device is provided, comprising a steam generator, at least one electric heater, a heat exchanger, a heating coil, at least one remote temperature transmitter and a control system, wherein the steam generator has a containing cavity; the electric heater is arranged on the steam generator, the electric heater is composed of a plurality of electric heating tubes, and the electric heater can heat the liquid in the containing cavity so that the steam generator generates steam; the heat exchanger has a heat exchange cavity, the heat exchange cavity is connected with the containing cavity, so that the steam generated by the steam generator enters the heat exchange cavity; the heating coil is arranged in the heat exchange cavity, the inside of the heating coil flows through the medium to be heated, and the medium to be heated exchanges heat with the steam in the heat exchange cavity; the remote temperature transmitter is arranged at the outlet end of the heating coil; the control system comprises an electric control cabinet and a power cabinet, the electric control cabinet is respectively connected to the power cabinet and the remote temperature transmitter signal, the power cabinet is connected to the electric heating tube signal of the electric heater, and the electric control cabinet controls the power cabinet according to the temperature signal sent by the remote temperature transmitter to adjust the working number of the electric heating tube, thereby adjusting the heating power of the electric heater.

[0005] Furthermore, the power of each electric heating tube is P 0 The number of electric heating tubes currently in operation is N, and the actual power of the electric heater is P 1 =N*P 0 , within the preset time period, the electric control cabinet will 1 The difference between the preset power and 0.5P 0 The size relationship is used to adjust the working quantity of the electric heating tube.

[0006] Furthermore, when the actual power P 1 The difference from the preset power is greater than or equal to 0.5P 0 When the power cabinet is controlled by the electric control cabinet, the number of working electric heating tubes is reduced until the actual power P 1 The difference from the preset power is less than 0.5P 0 ; When the preset power and the actual power P 1 The difference is greater than or equal to 0.5P 0 When the power cabinet is controlled by the electric control cabinet, the number of working electric heating tubes is increased until the preset power is equal to the actual power P 1 The difference is less than 0.5P 0 .

[0007] Furthermore, some of the multiple heating tubes are in a working state, and other parts are in a stopped state, wherein when the power cabinet needs to increase the working number of an electric heating tube, the electric control cabinet controls the electric heating tube that has been in the stopped state for the longest time to switch to the working state; and / or when the power cabinet needs to reduce the working number of an electric heating tube, the electric control cabinet controls the electric heating tube that has been in the working state for the longest time to switch to the stopped state; and / or the electric control cabinet records the electric heating tubes that are in an abnormal state, and controls the electric heating tubes in the abnormal state to always be in a stopped state.

[0008] Furthermore, when the temperature value detected by the remote temperature transmitter is less than or equal to the preset temperature value, the electric control cabinet controls the number of working electric heating tubes to increase, and the heating power of the electric heater increases; and / or when the temperature value detected by the remote temperature transmitter is greater than the preset temperature value, the electric control cabinet controls the number of working electric heating tubes to decrease, and the heating power of the electric heater decreases.

[0009] Furthermore, the high-power electric phase change heating furnace device also includes at least two corrugated compensators, and the fluid inlet and the fluid outlet of the accommodating cavity are respectively connected to the heat exchange cavity through the corrugated compensators.

[0010] Furthermore, the high-power electric phase change heating furnace device also includes a remote liquid level gauge, which is connected to the containing chamber and connected to the signal of the electric control cabinet. When the remote liquid level gauge detects that the volume or liquid level of the liquid in the containing chamber is less than a preset value, the electric control cabinet controls the electric heater to stop heating.

[0011] Furthermore, the high-power electric phase change heating furnace device also includes a first remote pressure gauge, which is connected to the heat exchange chamber and is connected to the electric control cabinet signal. When the first remote pressure gauge detects that the pressure of the steam in the heat exchange chamber is greater than the first preset pressure value, the electric control cabinet controls the electric heating tube of the electric heater to stop heating.

[0012] Furthermore, the high-power electric phase change heating furnace device also includes a second remote pressure gauge, which is arranged at the inlet end of the heating coil; a third remote pressure gauge, which is arranged at the outlet end of the heating coil, and the second remote pressure gauge and the third remote pressure gauge are both connected to the signal of the electric control cabinet. When the difference between the pressure value detected by the second remote pressure gauge and the pressure value detected by the third remote pressure gauge is greater than the preset difference, the electric control cabinet controls the electric heating tube of the electric heater to stop heating.

[0013] Furthermore, the high-power electric phase change heating furnace device also includes a water supply pipeline and a sewage discharge pipeline, wherein the water supply pipeline is connected to the accommodating chamber, and at least one first valve and an internal buckle fire protection interface are provided on the water supply pipeline; the sewage discharge pipeline is connected to the accommodating chamber, and the water supply pipeline and the sewage discharge pipeline are on the same side of the length direction of the steam generator, and at least two second valves are provided on the sewage discharge pipeline.

[0014] Furthermore, the steam generator is provided with a manhole, and the high-power electric phase change heating furnace device also includes an on-site liquid level meter and an on-site thermometer, wherein the on-site liquid level meter is arranged on the steam generator, and the on-site liquid level meter is used to detect the liquid level in the accommodating cavity in real time; the on-site thermometer is arranged on the steam generator, and the on-site thermometer is used to detect the temperature in the accommodating cavity in real time; the manhole, the on-site liquid level meter and the on-site thermometer are all located on the same side of the length direction of the steam generator.

[0015] Furthermore, there are two electric heaters, which are symmetrically arranged at opposite ends of the steam generator in the length direction. The high-power electric phase change heating furnace device also includes two connecting flanges, which correspond one to one to the two electric heaters, and the electric heaters are connected to the steam generator through the connecting flanges.

[0016] Furthermore, the high-power electric phase change heating furnace device also includes a steel frame and a multi-function electric meter, wherein the steam generator and the heat exchanger are both arranged on the steel frame, and at least a portion of the heat exchanger is located above the steam generator; the power cabinet and the electric control cabinet are both arranged on the steel frame; the multi-function electric meter is arranged on the power cabinet, and the multi-function electric meter is respectively connected to the signals of multiple electric heating tubes and the electric control cabinet, and the multi-function electric meter is used to detect the heating power of the multiple electric heating tubes.

[0017] Furthermore, there are multiple power cabinets, and each power cabinet is connected to multiple electric heating tubes. At least some of the multiple power cabinets are provided with a manual start-stop device, which can control the operation and stop of the corresponding electric heating tube.

[0018] Furthermore, the high-power electric phase change heating furnace device also includes at least one vent pipeline, which is connected to the heat exchange chamber and is provided with at least two third valves; and / or at least two safety valve discharge pipelines, which are connected to the heat exchange chamber and are provided with at least two fourth valves. When the pressure in the heat exchange chamber is greater than the second preset pressure value, all the fourth valves on the safety valve discharge pipeline are opened; and / or a pressure vacuum gauge, which is provided on the heat exchanger and is used to detect the pressure in the heat exchange chamber in real time.

[0019] The technical solution of the present invention is applied. The high-power electric phase change heating furnace device in this solution includes a steam generator, at least one electric heater, a heat exchanger, a heating coil, at least one remote temperature transmitter and a control system, wherein the steam generator has a accommodating chamber; the electric heater is arranged on the steam generator, and the electric heater can heat the liquid in the accommodating chamber so that the steam generator generates steam; the heat exchanger has a heat exchange chamber, and the heat exchange chamber is connected with the accommodating chamber so that the steam generated by the steam generator enters the heat exchange chamber; the heating coil is arranged in the heat exchange chamber, and the inside of the heating coil flows through the medium to be heated, and the medium to be heated exchanges heat with the steam in the heat exchange chamber; the remote temperature transmitter is arranged at the outlet end of the heating coil; the control system includes an electric control cabinet and a power cabinet, the electric control cabinet is respectively connected to the power cabinet and the remote temperature transmitter signal, the power cabinet is connected to the electric heating tube signal of the electric heater, and the electric control cabinet controls the power cabinet according to the temperature signal sent by the remote temperature transmitter to adjust the working number of the electric heating tube, thereby adjusting the heating power of the electric heater.

[0020] The electric heater in this scheme heats the steam generator, so that the liquid in the accommodating chamber is heated to generate steam, and the steam enters the shell side of the heat exchanger from the accommodating chamber, and the medium to be heated, such as crude oil, is introduced into the tube side of the heat exchanger to achieve heat exchange between the medium to be heated and the steam. The crude oil is heated by electricity as energy, replacing the traditional way of burning natural gas (heavy oil) to heat the steam generator, reducing the consumption of fossil fuels, promoting the green and low-carbon transformation of oil and gas fields, and fundamentally solving the problems of carbon emissions, excessive nitrogen oxides, and substandard thermal efficiency faced by the current heating furnace; and the control system can control the working number of the electric heating tube according to the remote temperature transmitter set at the crude oil outlet end of the tube side, steadily adjust the heating power of the electric heater, ensure that the crude oil is heated to a specific temperature, and realize the automatic operation of the high-power electric phase change heating furnace device. At the same time, the operating state of the device is always maintained in the set state, which can truly realize unattended operation, and the operation and maintenance are more convenient than gas (oil) heating furnaces. The layout of the device is more reasonable, and multiple power cabinets provide power for the electric heater to ensure that the electric heater can reach a sufficiently large power. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0022] Figure 1 A schematic structural diagram of a high-power electric phase change heating furnace device according to an optional embodiment of the present invention is shown;

[0023] Figure 2 A side structural schematic diagram of a high-power electric phase change heating furnace device according to an embodiment of the present invention is shown.

[0024] The above drawings include the following reference numerals:

[0025] 10. Steam generator; 11. Fluid inlet; 12. Fluid inlet; 20. Electric heater; 30. Heat exchanger; 40. Remote temperature transmitter; 50. Electric control cabinet; 60. Bellows compensator; 70. Remote level gauge; 80. First remote pressure gauge; 90. Second remote pressure gauge; 100. Third remote pressure gauge; 110. Water supply pipeline; 1101. First valve; 1102. Internal fire protection interface; 120. Sewage pipeline; 1201. Second valve; 12011. Stop valve; 12012, ball valve; 130, manhole; 140, local liquid level gauge; 150, local thermometer; 160, connecting flange; 170, steel frame; 171, base; 172, platform; 173, frame; 174, inclined ladder; 180, power cabinet; 190, vent pipeline; 1901, third valve; 200, safety valve discharge pipeline; 2001, fourth valve; 210, pressure vacuum gauge; 220, crude oil inlet; 230, crude oil outlet; 240, inlet end remote temperature transmitter. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] In order to solve the problems of large carbon emissions and low automation in the prior art, the present invention provides a high-power electric phase change heating furnace device.

[0028] like Figure 1 and Figure 2As shown, the high-power electric phase change heating furnace device includes a steam generator 10, at least one electric heater 20, a heat exchanger 30, a heating coil, at least one remote temperature transmitter 40 and a control system, wherein the steam generator 10 has a receiving cavity; the electric heater 20 is arranged on the steam generator 10, and the electric heater 20 is composed of a plurality of electric heating tubes, and the electric heater 20 can heat the liquid in the receiving cavity so that the steam generator 10 generates steam; the heat exchanger 30 has a heat exchange cavity, and the heat exchange cavity is connected with the receiving cavity so that the steam generated by the steam generator 10 enters the heat exchange cavity; the heating coil It is arranged in the heat exchange cavity, and the medium to be heated flows through the inside of the heating coil, and the medium to be heated exchanges heat with the steam in the heat exchange cavity; the remote temperature transmitter 40 is arranged at the outlet end of the heating coil; the control system includes an electric control cabinet 50 and a power cabinet 180, the electric control cabinet 50 is respectively connected to the power cabinet 180 and the remote temperature transmitter 40 signal, the power cabinet 180 is connected to the electric heating tube signal of the electric heater 20, and the electric control cabinet 50 controls the power cabinet 180 according to the temperature signal sent by the remote temperature transmitter 40 to adjust the working number of the electric heating tube, thereby adjusting the heating power of the electric heater 20.

[0029] The electric heater 20 in this solution heats the steam generator 10, so that the liquid in the accommodating chamber is heated to generate steam, and the steam enters the shell side of the heat exchanger 30 from the accommodating chamber, and the medium to be heated, such as crude oil, is introduced into the tube side of the heat exchanger 30 to achieve heat exchange between the medium to be heated and the steam. The crude oil is heated by electricity as energy, which replaces the traditional way of burning natural gas (heavy oil) to heat the steam generator 10, reduces the consumption of fossil fuels, promotes the green and low-carbon transformation of oil and gas fields, and fundamentally solves the problems of carbon emissions, excessive nitrogen oxides, and substandard thermal efficiency faced by the current heating furnace; and the control system can adjust the heating power of the electric heater 20 according to the remote temperature transmitter 40 set at the crude oil outlet end of the tube side, ensure that the crude oil is heated to a specific temperature, and realize the automatic operation of the high-power electric phase change heating furnace device. At the same time, the operating state of the device is always maintained in the set state, which can truly realize unattended operation, and the operation and maintenance are more convenient than gas (oil) heating furnaces. The layout of the device is more reasonable, and multiple power cabinets 180 provide electric energy for the electric heater 20 to ensure that the electric heater 20 can reach a sufficiently large power.

[0030] like Figure 1 As shown, the power of each electric heating tube is P 0 The number of electric heating tubes currently in operation is N, and the actual power of the electric heater 20 is P 1 =N*P 0 , within the preset time period, the electric control cabinet 50 is based on the actual power P 1 The difference between the preset power and 0.5P 0Thus, when the device is started, stopped, or the power of the electric heater 20 changes, the electric control cabinet 50 adjusts the power by gradually increasing or decreasing the power to reduce the impact of sudden load changes on the power grid and ensure the safety of the device operation.

[0031] like Figure 1 As shown, when the actual power P 1 The difference from the preset power is greater than or equal to 0.5P 0 When the electric control cabinet 50 controls the power cabinet 180 to reduce the number of working electric heating tubes, the actual power P 1 The difference from the preset power is less than 0.5P 0 ; When the preset power and the actual power P 1 The difference is greater than or equal to 0.5P 0 When the power cabinet 180 increases the working quantity of the electric heating tube, the electric control cabinet 50 controls the power cabinet 180 to increase the working quantity of the electric heating tube until the preset power and the actual power P 1 The difference is less than 0.5P 0 Thus, when the actual power of the electric heater 20 is greater than the preset power value by more than 0.5P 0 When the preset power of the electric heater 20 is greater than the actual power by more than 0.5P 0 When the power is turned on, the number of working electric heating tubes increases by one to ensure that the actual power is close to the preset power value.

[0032] like Figure 1 As shown, part of the multiple electric heating tubes are in working state, and the other part of the electric heating tubes are in stopping state, wherein, when the power cabinet 180 needs to increase the number of working electric heating tubes, the electric control cabinet 50 controls the electric heating tube that has been in stopping state for the longest time to switch to working state; when the power cabinet 180 needs to reduce the number of working electric heating tubes, the electric control cabinet 50 controls the electric heating tube that has been in working state for the longest time to switch to stopping state; the electric control cabinet 50 records the electric heating tubes in abnormal state, and controls the electric heating tubes in abnormal state to always be in stopping state. In this way, the electric control cabinet 50 adopts an optimized scheduling strategy for the start and stop control of the electric heating tubes, and the heating or deactivation of the electric heating tubes is scheduled according to the length of working time. When deactivating, the electric heating tube with the longest heating time is searched, and when heating, the electric heating tube with the longest deactivation time is searched, so as to reduce the frequent start and stop of the electric heating tubes, reduce the impact current, and extend the life of the electrical components. When encountering an electric heating tube with abnormal function, the system automatically records and cuts off its power supply, and removes it from the scheduling queue.

[0033] like Figure 1As shown, when the temperature value detected by the remote temperature transmitter 40 is less than or equal to the preset temperature value, the electric control cabinet 50 controls the working number of the electric heating pipe to increase, and the heating power of the electric heater 20 increases; when the temperature value detected by the remote temperature transmitter 40 is greater than the preset temperature value, the electric control cabinet 50 controls the working number of the electric heating pipe to decrease, and the heating power of the electric heater 20 decreases. In this way, the temperature of the medium to be heated, such as crude oil, after being heated by the heat exchanger 30 is ensured to be controllable.

[0034] Preferably, the preset temperature value is 50° C.; or the preset temperature value is 45° C.; of course, the preset temperature value can also be set according to actual needs.

[0035] like Figure 1 and Figure 2 As shown, the high-power electric phase change heating furnace device also includes at least two corrugated compensators 60, and the fluid inlet 11 and the fluid outlet 12 of the accommodating chamber are respectively connected to the heat exchange chamber through the corrugated compensators 60. In this way, the steam generated in the accommodating chamber enters the heat exchange chamber through the fluid outlet 12, and the steam exchanges heat with the medium to be heated in the heating coil in the heat exchange chamber. The generated condensed water flows back to the accommodating chamber through the fluid inlet 11 to achieve circulation, and the corrugated compensator 60 can compensate for the relative deformation generated when the steam generator 10 and the heat exchanger 30 are heated.

[0036] Preferably, the fluid in the accommodating chamber is water, the steam generated when heated is water vapor, the fluid inlet 11 is connected to the water in the accommodating chamber, and the fluid outlet 12 is connected to the water vapor in the accommodating chamber, that is, the fluid inlet 11 is located below the fluid liquid surface, and the fluid outlet 12 is located above the fluid liquid surface.

[0037] like Figure 1 As shown, the high-power electric phase change heating furnace device also includes a remote level gauge 70, which is connected to the receiving chamber, and the remote level gauge 70 is connected to the electric control cabinet 50 by signal. When the remote level gauge 70 detects that the volume or liquid level of the liquid in the receiving chamber is less than a preset value, the electric control cabinet 50 controls the electric heater 20 to stop heating. In this way, when the volume of the fluid in the receiving chamber is too small or the liquid level is too low, the electric heater 20 continues to heat and causes the steam generator 10 to dry out, which is dangerous.

[0038] like Figure 1 As shown, the high-power electric phase-change heating furnace device also includes a first remote pressure gauge 80, which is connected to the heat exchange cavity and is connected to the electric control cabinet 50 by signal. When the first remote pressure gauge 80 detects that the pressure of the steam in the heat exchange cavity is greater than the first preset pressure value, the electric control cabinet 50 controls the electric heating tube of the electric heater 20 to stop heating. In this way, the pressure of the steam in the heat exchange cavity is ensured to be less than the first preset pressure value, preventing the device from exploding due to excessive pressure.

[0039] It should be noted that in this embodiment, when the pressure in the heat exchange chamber is too high and the electric heater 20 stops heating, the heated medium continuously flowing through the heating coil consumes the energy of the steam, causing the pressure of the steam in the heat exchange chamber to gradually decrease.

[0040] like Figure 1 As shown, the high-power electric phase change heating furnace device also includes a second remote pressure gauge 90 and a third remote pressure gauge 100, wherein the second remote pressure gauge 90 is arranged at the inlet end of the heating coil; the third remote pressure gauge 100 is arranged at the outlet end of the heating coil, and the second remote pressure gauge 90 and the third remote pressure gauge 100 are both connected to the electric control cabinet 50 by signal. When the difference between the pressure value detected by the second remote pressure gauge 90 and the pressure value detected by the third remote pressure gauge 100 is greater than the preset difference, the electric control cabinet 50 controls the electric heating tube of the electric heater 20 to stop heating. In this way, when the pressure drop of the crude oil after waiting for the heating medium to flow through the heating coil is too large, the heating coil may be blocked or other abnormalities. After the electric heater 20 stops heating, the device is checked to ensure the safe operation of the device.

[0041] like Figure 2 As shown, the high-power electric phase change heating furnace device also includes a water supply pipeline 110 and a sewage discharge pipeline 120, wherein the water supply pipeline 110 is connected to the accommodating chamber, and at least one first valve 1101 and an inner buckle fire protection interface 1102 are provided on the water supply pipeline 110; the sewage discharge pipeline 120 is connected to the accommodating chamber, and the water supply pipeline 110 and the sewage discharge pipeline 120 are on the same side of the length direction of the steam generator 10, and at least two second valves 1201 are provided on the sewage discharge pipeline 120. In this way, before the device is heated or when the water level in the accommodating chamber is too low, the water supply pipeline 110 adds water to the steam generator 10, and after the device is heated or when the device needs to be repaired, the sewage discharge pipeline 120 drains water from the steam generator 10.

[0042] Preferably, the water supply line 110 is located above the sewage discharge line 120. There is one first valve 1101 on the water supply line 110, which is a ball valve, and two second valves 1201 on the sewage discharge line 120, which include a stop valve 12011 and a ball valve 12012. Two different second valves 1201 are provided on the sewage discharge line 120 to prevent the liquid in the steam generator 10 from being lost and affecting the sealing of the device when one of the second valves 1201 is damaged.

[0043] like Figure 1As shown, the steam generator 10 has a manhole 130, and the high-power electric phase change heating furnace device also includes an on-site liquid level meter 140 and an on-site thermometer 150, wherein the on-site liquid level meter 140 is arranged on the steam generator 10, and the on-site liquid level meter 140 is used to detect the liquid level in the receiving chamber in real time; the on-site thermometer 150 is arranged on the steam generator 10, and the on-site thermometer 150 is used to detect the temperature in the receiving chamber in real time; the manhole 130, the on-site liquid level meter 140 and the on-site thermometer 150 are all located on the same side of the length direction of the steam generator 10. In this way, the staff can enter the steam generator 10 through the manhole 130, which is convenient for later maintenance, and the arrangement of the on-site liquid level meter 140 and the on-site thermometer 150 is convenient for the staff to check the liquid level and temperature in the steam generator 10 at any time.

[0044] Preferably, the water supply pipeline 110 and the sewage pipeline 120 are on the same side of the length direction of the steam generator 10, and the manhole 130, the local liquid level meter 140 and the local thermometer 150 are located on the other side of the length direction of the steam generator 10. The local thermometer 150 is located above the local liquid level meter 140, which is reasonably arranged and saves device space.

[0045] like Figure 1 As shown, there are two electric heaters 20, which are symmetrically arranged at opposite ends of the length direction of the steam generator 10. The high-power electric phase change heating furnace device also includes two connecting flanges 160, and the two connecting flanges 160 correspond to the two electric heaters 20 one by one. The electric heater 20 is connected to the steam generator 10 through the connecting flanges 160. In this way, the two connecting flanges 160 are used to connect the two electric heaters 20 and the steam generator 10, so as to ensure the reliability of the connection between the electric heaters 20 and the steam generator 10, and the two electric heaters 20 are heated at the same time to improve the heating efficiency.

[0046] It should be noted that, in this embodiment, the heating ends of the two electric heaters 20 extend into the accommodating cavity of the steam generator 10 to heat the fluid.

[0047] like Figure 1 As shown, the high-power electric phase change heating furnace device also includes a steel frame 170 and a multi-function electric meter, wherein the steam generator 10 and the heat exchanger 30 are both arranged on the steel frame 170, and at least a part of the heat exchanger 30 is located above the steam generator 10; the power cabinet 180 and the electric control cabinet 50 are both arranged on the steel frame 170; the multi-function electric meter is arranged on the power cabinet 180, and the multi-function electric meter is respectively connected to the signals of the multiple electric heating tubes and the electric control cabinet 50, and the multi-function electric meter is used to detect the heating power of the multiple electric heating tubes. In this way, the layout of the device is more reasonable, and the electric control cabinet 50 can display the heating power of the multiple electric heating tubes detected by the multi-function electric meter.

[0048] Preferably, the heat exchanger 30 is located directly above the steam generator 10. In this way, the steam generated in the steam generator 10 can directly flow upward into the heat exchanger 30.

[0049] like Figure 1 As shown, there are multiple power cabinets 180, and each power cabinet 180 is connected to multiple electric heating pipes. At least a part of the multiple power cabinets 180 is provided with a manual start-stop device, which can control the operation and stop of the corresponding electric heating pipe. In this way, considering the sudden loss of control of the electric control, the manual start-stop device can realize emergency heat preservation of the device.

[0050] In this embodiment, each power cabinet 180 is used to manage three electric heating tubes in the control system, and a total of eight power cabinets 180 are used to realize total power control. Each power cabinet 180 is equipped with a multi-function electric meter, and the multi-function electric meter communicates data with the electric control cabinet 50 to realize remote monitoring. Since the power control accuracy of the start and stop control of a single electric heating tube has met the accuracy requirements, the power regulator unit in the prior art is eliminated, reducing the heat dissipation or insulation requirements of the power cabinet 180. Each heating tube can be started and stopped by the electric control cabinet 50, and the power on and off status can be accurately sensed. Considering the sudden loss of control of the electric control, manual start and stop devices are installed on two of the power cabinets to realize emergency insulation of the device.

[0051] It should be noted that, in this embodiment, the steel frame 170 includes a base 171, a platform 172, a frame 173 and an inclined ladder 174. The frame 173 is arranged above the base 171 and is used to support the platform 172. The heat exchanger 30 is arranged above the platform 172. The steam generator 10 is arranged above the base 171 and below the platform 172. The inclined ladder 174 is connected between the base 171 and the platform 172, and the inclined ladder 174 is located on the side of the steam generator 10 away from the water supply pipeline 110 in the length direction. The inclined ladder 174 can be used for staff to climb to the platform 172 to inspect or repair the heat exchanger 30.

[0052] It should be noted that, in the present embodiment, the control system uses a PID algorithm to automatically and dynamically adjust the heating power of the electric heater 20, smoothly adjust the heating power, and maintain a constant temperature at the outlet end of the heating coil. When the temperature value T detected by the outlet remote temperature transmitter 40 differs greatly from the target temperature Ts, the system gradually increases the output power. When the temperature deviation decreases, the system reduces the amplitude of the power increase or decrease until the outlet temperature is close to the target temperature, and maintains the output power in a steady state. When the system starts, stops, or the output power changes, the electric control cabinet 50 uses a step-by-step increase or decrease method to adjust the power to reduce the impact of sudden load changes on the power grid. Specific adjustment strategy: Check the preset power and the actual power P every 3s (the time period is adjustable) 1 Deviation, if it exceeds half of the power of a single electric heating tube (0.5P 0), then start / stop one electric heating tube; after maintaining for 3s, start detection and adjustment again, and adjust until the preset power is consistent with the actual power P 1 The deviation value is less than 0.5P 0 The power cabinet 180 and the instrument control cabinet are both arranged on the base 171. The instrument control cabinet is located at one end of the power cabinet 180 away from the steam generator 10. The power cabinet 180 is arranged into 8 groups, arranged in four rows side by side or any other number of groups.

[0053] like Figure 1 As shown, the high-power electric phase change heating furnace device also includes at least one vent line 190, which is connected to the heat exchange chamber, and at least two third valves 1901 are provided on the vent line 190; in this way, when the device just starts to heat, the third valve 1901 on the vent line 190 is opened to exhaust the air in the device to ensure that the water vapor fills the containing chamber and the heat exchange chamber, and the third valve 1901 is closed after a certain period of time to ensure the sealing of the device. When the internal pressure of the device is too high and the vent line 190 needs to be opened, at least two third valves 1901 on the vent line 190 are opened in sequence from the valve close to the heat exchange chamber to prevent the pressure in the heat exchange chamber from being released instantly to cause danger.

[0054] Preferably, there are two third valves 1901, which include a stop valve and a ball valve in sequence.

[0055] like Figure 1 As shown, the high-power electric phase change heating furnace device also includes at least two safety valve discharge pipelines 200, the safety valve discharge pipeline 200 is connected to the heat exchange chamber, and at least two fourth valves 2001 are arranged on the safety valve discharge pipeline 200. When the pressure in the heat exchange chamber is greater than the second preset pressure value, all the fourth valves 2001 on the safety valve discharge pipeline 200 are opened; in this way, the setting of the safety valve discharge pipeline 200 prevents the risk of explosion caused by excessive pressure in the heat exchange chamber.

[0056] Preferably, the second preset pressure value is greater than the first preset pressure value.

[0057] Preferably, the vent line 190 and the safety valve discharge line 200 are both located above the heat exchanger 30 .

[0058] It should be noted that there are two safety valve discharge pipelines 200, and there are two fourth valves 2001, which include a wedge gate valve and a safety valve in sequence. When the pressure in the heat exchange chamber is greater than the second preset pressure value, the two fourth valves 2001 on the safety valve discharge pipeline 200 are opened in sequence from the fourth valve 2001 close to the heat exchange chamber.

[0059] like Figure 1As shown, the high-power electric phase change heating furnace device also includes a pressure vacuum gauge 210, which is arranged on the heat exchanger 30 and is used to detect the pressure in the heat exchange cavity in real time. In this way, it is convenient for the staff to check the pressure in the heat exchange cavity at any time.

[0060] It should be noted that, in the present embodiment, the high-power electric phase change heating furnace device further includes a crude oil inlet 220 and a crude oil outlet 230, the crude oil inlet 220 is the inlet end of the heating coil, and the crude oil outlet 230 is the outlet end of the heating coil. The high-power electric phase change heating furnace device further includes an inlet end remote temperature transmitter 240, which is arranged at the inlet end of the heating coil. The inlet end remote temperature transmitter 240 is connected to the electric control cabinet 50 by signal, so that the staff can check the temperature at the crude oil inlet 220 on the electric control cabinet 50.

[0061] The specific use process of the high-power electric phase change heating furnace device of this scheme is as follows: turn on the power switch on the power cabinet 180 in turn, the electric heater 20 starts to work, the liquid in the steam generator shell is heated to generate water vapor and enters the heat exchanger 30, the venting pipeline 190 is opened and closed after a certain period of time, the air in the accommodating cavity and the heat exchange cavity is discharged, the temperature parameters of the crude oil after heating are set on the instrument control cabinet, the crude oil inlet 220 and the crude oil outlet 230 are opened, the crude oil is connected from the wellhead oil tree or the crude oil transmission pipeline, the crude oil enters the heating coil in the heat exchanger 30 for heat exchange, the heated crude oil is output through the crude oil outlet 230, and the steam condenses into water after heat exchange and returns to the steam generator 10 for reuse.

[0062] When the first remote pressure gauge 80 detects that the pressure of the steam in the heat exchange chamber is greater than the first preset pressure value, the electrical control cabinet 50 controls the electric heater 20 to stop heating. Under normal circumstances, the steam pressure value decreases. If the steam pressure in the heat exchange chamber continues to increase to the second preset pressure value, the instrument control cabinet sends a signal and the safety valve discharge pipeline 200 automatically opens to release the pressure. The venting pipeline 190 can also be opened at the same time to release the pressure; when the remote liquid level gauge 70 detects that the volume or liquid level of the liquid in the accommodating chamber is less than the preset value, the liquid level alarm on the instrument control cabinet sends an alarm signal, and the electrical control cabinet 50 controls the electric heater 20 to stop heating to ensure the safety of the device.

[0063] From the above description, it can be seen that the above-mentioned embodiment of the present invention achieves the following technical effects: the high-power electric phase change heating furnace device adopts an integrated design, and the steam generator 10, the heat exchanger 30, the electric control cabinet 50, the venting pipeline 190, the safety valve discharge pipeline 200, and the power cabinet 180 are installed on a steel frame 170, with high integration, multiple functions, small footprint and small on-site construction. The heating method of the electric heater 20 replaces the original traditional heating method of consuming fossil fuels, which reduces carbon emissions during the operation of the device and increases the heat transfer efficiency of the system. At the same time, the instrument control cabinet monitors the operation data and analyzes and adjusts the data to realize the automatic operation and unattended operation of the device.

[0064] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0065] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0066] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0067] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0068] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0069] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high-power electric phase change heating furnace device, characterized in that: include: A steam generator (10), the steam generator (10) having a receiving chamber; at least one electric heater (20), the electric heater (20) being arranged on the steam generator (10), the electric heater (20) being composed of a plurality of electric heating tubes, and the electric heater (20) being capable of heating the liquid in the accommodating cavity so that the steam generator (10) generates steam; A heat exchanger (30), the heat exchanger (30) having a heat exchange cavity, the heat exchange cavity being in communication with the accommodating cavity so that the steam generated by the steam generator (10) enters the heat exchange cavity; A heating coil, wherein the heating coil is arranged in the heat exchange cavity, a medium to be heated flows through the interior of the heating coil, and the medium to be heated exchanges heat with the steam in the heat exchange cavity; at least one remote temperature transmitter (40), the remote temperature transmitter (40) being arranged at the outlet end of the heating coil; A control system, the control system comprising an electric control cabinet (50) and a power cabinet (180), the electric control cabinet (50) being respectively connected to the power cabinet (180) and the remote temperature transmitter (40) by signals, the power cabinet (180) being connected to the electric heating tube of the electric heater (20) by signals, the electric control cabinet (50) controlling the power cabinet (180) according to the temperature signal sent by the remote temperature transmitter (40) to adjust the working quantity of the electric heating tube, thereby adjusting the heating power of the electric heater (20).

2. The high-power electric phase change heating furnace device according to claim 1 is characterized in that: The power of each of the electric heating tubes is P0, the number of the electric heating tubes currently in actual operation is N, the actual power P1 of the electric heater (20) is equal to N*P0, and within a preset time period, the electric control cabinet (50) adjusts the number of the electric heating tubes in operation according to the difference between the actual power P1 and the preset power and the magnitude relationship of 0.5P0.

3. The high-power electric phase change heating furnace device according to claim 2 is characterized in that: When the difference between the actual power P1 and the preset power is greater than or equal to 0.5P0, the electric control cabinet (50) controls the power cabinet (180) to reduce the working quantity of one electric heating pipe until the difference between the actual power P1 and the preset power is less than 0.5P0; When the difference between the preset power and the actual power P1 is greater than or equal to 0.5P0, the electric control cabinet (50) controls the power cabinet (180) to increase the working quantity of the electric heating pipe by one until the difference between the preset power and the actual power P1 is less than 0.5P0.

4. The high-power electric phase change heating furnace device according to claim 1 is characterized in that: Some of the plurality of electric heating tubes are in working state, and another part of the electric heating tubes are in stopping state, wherein: When the power cabinet (180) needs to increase the working number of the electric heating pipe, the electric control cabinet (50) controls the electric heating pipe that has been in the stopped state for the longest time to switch to the working state; and / or When the power cabinet (180) needs to reduce the working number of one of the electric heating tubes, the electric control cabinet (50) controls the electric heating tube that has been in the working state for the longest time to switch to the stopped state; and / or The electric control cabinet (50) records the electric heating pipe in an abnormal state, and controls the electric heating pipe in an abnormal state to always be in the stopped state.

5. The high-power electric phase change heating furnace device according to claim 1 is characterized in that: When the temperature value detected by the remote temperature transmitter (40) is less than or equal to a preset temperature value, the electric control cabinet (50) controls the working quantity of the electric heating pipe to increase, and the heating power of the electric heater (20) to increase; and / or When the temperature value detected by the remote temperature transmitter (40) is greater than the preset temperature value, the electric control cabinet (50) controls the working quantity of the electric heating pipe to decrease, and the heating power of the electric heater (20) is reduced.

6. The high-power electric phase change heating furnace device according to claim 1 is characterized in that: The high-power electric phase-change heating furnace device also includes at least two corrugated compensators (60), and the fluid inlet (11) and the fluid outlet (12) of the accommodating cavity are respectively connected to the heat exchange cavity through the corrugated compensators (60).

7. The high-power electric phase change heating furnace device according to claim 1 is characterized in that: The high-power electric phase change heating furnace device also includes: A remote liquid level meter (70), the remote liquid level meter (70) being connected to the containing chamber, the remote liquid level meter (70) being connected to the electric control cabinet (50) by signal, and when the remote liquid level meter (70) detects that the volume or liquid level of the liquid in the containing chamber is less than a preset value, the electric control cabinet (50) controls the electric heater (20) to stop heating.

8. The high-power electric phase change heating furnace device according to claim 1 is characterized in that: The high-power electric phase change heating furnace device also includes: A first remote pressure gauge (80), the first remote pressure gauge (80) is connected to the heat exchange chamber, and the first remote pressure gauge (80) is signal-connected to the electric control cabinet (50). When the first remote pressure gauge (80) detects that the pressure of the steam in the heat exchange chamber is greater than a first preset pressure value, the electric control cabinet (50) controls the electric heating tube of the electric heater (20) to stop heating.

9. The high-power electric phase change heating furnace device according to claim 1, characterized in that: The high-power electric phase change heating furnace device also includes: A second remote pressure gauge (90), the second remote pressure gauge (90) being arranged at the inlet end of the heating coil; A third remote pressure gauge (100), the third remote pressure gauge (100) being arranged at the outlet end of the heating coil, the second remote pressure gauge (90) and the third remote pressure gauge (100) being both connected to the electric control cabinet (50) by signal, and when the difference between the pressure value detected by the second remote pressure gauge (90) and the pressure value detected by the third remote pressure gauge (100) is greater than a preset difference, the electric control cabinet (50) controls the electric heating tube of the electric heater (20) to stop heating.

10. The high-power electric phase change heating furnace device according to any one of claims 1 to 9, characterized in that: The high-power electric phase change heating furnace device also includes: A water supply pipeline (110), the water supply pipeline (110) being in communication with the accommodating chamber, and the water supply pipeline (110) being provided with at least one first valve (1101) and an inner buckle fire-fighting interface (1102); A sewage pipeline (120), the sewage pipeline (120) is connected to the accommodating chamber, the water supply pipeline (110) and the sewage pipeline (120) are on the same side of the length direction of the steam generator (10), and at least two second valves (1201) are provided on the sewage pipeline (120).

11. The high-power electric phase change heating furnace device according to any one of claims 1 to 9, characterized in that: The steam generator (10) is provided with a manhole (130), and the high-power electric phase change heating furnace device further comprises: An on-site liquid level meter (140), the on-site liquid level meter (140) being arranged on the steam generator (10), and the on-site liquid level meter (140) being used to detect the liquid level in the containing cavity in real time; an on-site thermometer (150), the on-site thermometer (150) being arranged on the steam generator (10), and the on-site thermometer (150) being used to detect the temperature in the containing chamber in real time; The manhole (130), the local liquid level meter (140) and the local temperature meter (150) are all located on the same side of the length direction of the steam generator (10).

12. The high-power electric phase change heating furnace device according to any one of claims 1 to 9, characterized in that: There are two electric heaters (20), and the two electric heaters (20) are symmetrically arranged at opposite ends of the length direction of the steam generator (10). The high-power electric phase change heating furnace device also includes: Two connecting flanges (160), the two connecting flanges (160) correspond one to one to the two electric heaters (20), and the electric heaters (20) are connected to the steam generator (10) via the connecting flanges (160).

13. The high-power electric phase change heating furnace device according to any one of claims 1 to 9, characterized in that: The high-power electric phase change heating furnace device also includes: a steel frame (170), the steam generator (10) and the heat exchanger (30) are both arranged on the steel frame (170), and at least a portion of the heat exchanger (30) is located above the steam generator (10), and the power cabinet (180) and the electric control cabinet (50) are both arranged on the steel frame (170); A multifunctional electric meter is arranged on the power cabinet (180), the multifunctional electric meter is respectively connected to the plurality of electric heating tubes and the electric control cabinet (50) by signals, and the multifunctional electric meter is used to detect the heating power of the plurality of electric heating tubes.

14. The high-power electric phase change heating furnace device according to any one of claims 1 to 9, characterized in that: There are a plurality of power cabinets (180), and each of the power cabinets (180) is connected to a plurality of the electric heating pipes. At least a portion of the power cabinets (180) among the plurality of the power cabinets (180) are provided with a manual start-stop device, and the manual start-stop device can control the operation and stop of the corresponding electric heating pipe.

15. The high-power electric phase change heating furnace device according to any one of claims 1 to 9, characterized in that: The high-power electric phase change heating furnace device also includes: at least one vent line (190), the vent line (190) being in communication with the heat exchange chamber, the vent line (190) being provided with at least two third valves (1901); and / or at least two safety valve discharge pipelines (200), the safety valve discharge pipelines (200) being in communication with the heat exchange chamber, the safety valve discharge pipelines (200) being provided with at least two fourth valves (2001), and when the pressure in the heat exchange chamber is greater than a second preset pressure value, all the fourth valves (2001) on the safety valve discharge pipelines (200) are opened; and / or A pressure vacuum gauge (210), wherein the pressure vacuum gauge (210) is arranged on the heat exchanger (30), and the pressure vacuum gauge (210) is used to detect the pressure in the heat exchange cavity in real time.

Images