Steam jacketed kettle apparatus

Abstract

The utility model relates to oil and gas field exploitation and oil and gas gathering and delivering heating equipment technical field especially is concerned to a kind of steam water jacket furnace device, including furnace body and the heat exchange coil in furnace body constitute furnace shell pass and tube pass, electromagnetic valve and located density sensor and flow sensor upstream of electromagnetic valve are provided on steam input pipeline;Temperature detection device is provided on the oil and gas outlet pipeline outside furnace body;The steam water jacket furnace device further includes PLC control system, and PLC control system is respectively with temperature detection device, density sensor, flow sensor and electromagnetic valve electrically controlled connection.By PLC control system, the data information detected by temperature detection device, density sensor and flow sensor are monitored in real time, and the opening of electromagnetic valve is accurately controlled by comprehensively all information, both meet oil and gas heating demand, also take into account high heat exchange efficiency, low energy consumption and high heating stability, realize the intelligent dynamic monitoring, accurate control and energy efficiency optimization of steam water jacket furnace.

Description

Technical Field

[0001] This utility model relates to the technical field of oil and gas field development and oil and gas gathering and transportation heating equipment, and in particular to a steam water jacket furnace device. Background Technology

[0002] A water jacket furnace is an indirect heating device used in oil and gas field gathering and transportation systems. Traditional water jacket furnaces typically use natural gas or light oil as fuel. The high temperature generated by combustion heats the water inside the furnace. The heated water then heats the crude oil and natural gas in the coils through heat conduction, improving crude oil flowability, reducing single-well back pressure, and addressing winter production issues. Due to its long service life and ease of maintenance, the water jacket furnace has become the preferred heating equipment in oil and gas extraction and gathering processes, and is widely used in oil and gas field development and gathering and transportation heating. Traditional water jacket furnaces utilize associated natural gas produced from metering station wells as fuel. The combustion of the associated natural gas heats the water jacket furnace, and the heat conduction of the water heats the crude oil in the furnace coils, reducing flow resistance and lowering back pressure. However, using associated natural gas for heating has the following disadvantages: (1) When the oil well is not producing normally, the amount of associated natural gas also decreases, making it difficult for the water jacket furnace to heat and making it impossible to guarantee the stability of the temperature of the fluid to be heated. (2) The size of the fire in the water jacket furnace is controlled by the on-site personnel by manually opening and closing the valves. However, due to the constant changes in pressure, associated natural gas and ambient temperature during oil well production, the fire combustion is unpredictable, causing the water jacket furnace temperature to fluctuate and making it difficult to ensure a stable heating effect. (3) During the heating process of the water jacket furnace, the furnace water evaporates due to high temperature and needs to be added frequently and irregularly. Otherwise, the furnace water level will be too low, causing the water jacket furnace to dry burn and causing an accident, which will reduce the heating efficiency of the water jacket furnace and increase the labor intensity of the operators.

[0003] (4) Associated natural gas contains moisture. In low-temperature environments, the moisture in natural gas can easily freeze and block fuel pipelines, causing the water jacket furnace to go out. Moreover, low-temperature freezing and blockage often occur at night and are not easy to detect. (5) Associated natural gas contains a lot of impurities. The presence of impurities causes the combustion of associated natural gas to produce a lot of black smoke, which pollutes the atmospheric environment.

[0004] Chinese invention patent application CN116147201A discloses an intelligent monitoring and control device, system, and method for a water-jacketed heating furnace. The device includes a water-jacketed furnace body, a water tank located on top of the furnace body, a water supply pipe, a controller, a normally closed valve, and a water level control valve located within the water tank. The water level control valve includes a valve body, a connecting rod, and a float. The float is connected to the valve body via the connecting rod. Water inlets are located on the side wall and top of the water tank. The water supply pipe passes through the inlets on the side wall and connects to the inlet of the valve body. The normally closed valve is installed on the inlet at the top of the water tank, and the water supply pipe is also connected to the normally closed valve. The normally closed valve is electrically connected to the controller. This invention enables automatic and precise water replenishment to the water-jacketed furnace, improving production efficiency and reducing labor costs. However, the water jacket furnace disclosed in this invention patent still uses natural gas or light oil as fuel to heat the water inside the furnace through combustion. The water jacket furnace device still retains burners, flue pipes, and chimneys, which still pose a safety hazard of furnace explosion during ignition and combustion, and also cause air pollution. More importantly, its intelligent control only determines whether to add water to the water jacket furnace based on temperature and level data monitored by temperature and level sensors. The monitoring data lacks correlation and guidance, and cannot achieve real-time high-precision dynamic monitoring and accurate replenishment of the heating medium, thus failing to optimize the energy efficiency of the water jacket furnace. Utility Model Content

[0005] The purpose of this utility model is to provide a steam-water jacket furnace device to solve the technical problem that existing water jacket furnace devices have poor heating stability and cannot achieve real-time high-precision dynamic monitoring and accurate replenishment of the heating medium, thus making it impossible to optimize the energy efficiency of the water jacket furnace.

[0006] To achieve the above objectives, this utility model provides a steam-water jacketed furnace device, comprising a furnace body and a shell side and a tube side of the furnace body composed of heat exchange coils within the furnace body. The inlet and outlet of the tube side are used to connect to oil and gas transmission pipelines, and the shell side is used to connect to an external steam input pipeline. A solenoid valve and a density sensor and a flow sensor located upstream of the solenoid valve are installed on the steam input pipeline. A condensate drain pipeline is connected to the bottom of the furnace body, and a condensate drain valve is installed on the condensate drain pipeline. The inlet and outlet pipelines of the heat exchange coils both extend to the outside of the furnace body, and a temperature detection device is installed on the outlet pipeline outside the furnace body. The steam-water jacketed furnace device also includes a PLC control system, which is electrically connected to the temperature detection device, density sensor, flow sensor, and solenoid valve respectively.

[0007] Furthermore, a pressure detection branch is also provided on the steam input pipeline, and a pressure detection device is provided at the end of the pressure detection branch. The pressure detection device is electrically connected to the PLC control system. The pressure detection device is a pressure gauge, pressure sensor or pressure transmitter, and a pressure detection device control valve is provided on the pressure detection branch.

[0008] Furthermore, a condensate temperature detection device is provided upstream of the condensate discharge valve on the condensate discharge pipeline; the condensate temperature detection device is a condensate electrical contact thermometer, a condensate temperature sensor, or a condensate temperature transmitter.

[0009] Furthermore, the condensate temperature detection device is a condensate electrical contact thermometer, which is directly electrically connected to the condensate drain valve to automatically control the opening and closing of the condensate drain valve based on the temperature value detected by the condensate electrical contact thermometer.

[0010] Furthermore, the condensate temperature detection device is a condensate temperature sensor or a condensate temperature transmitter. The condensate temperature sensor or the condensate temperature transmitter is electrically connected to the PLC control system. The PLC control system monitors the temperature information detected by the condensate temperature sensor or the condensate temperature transmitter in real time. When the condensate temperature exceeds the set upper temperature limit, the PLC control system controls the condensate drain valve to close. When the condensate temperature is lower than the set lower temperature limit, the PLC control system controls the condensate drain valve to open.

[0011] Furthermore, the outlet of the condensate discharge pipeline is connected to the water collection tank; the temperature detection device is an electrical contact thermometer, a temperature sensor, or a temperature transmitter.

[0012] Furthermore, the steam input pipeline is connected to the top of the furnace body, and a safety valve is provided at the top of the furnace body.

[0013] Furthermore, the safety valve includes a bend and staggered arc-shaped baffles arranged on the inner wall of the bend, the bend including a U-shaped pipe section.

[0014] Furthermore, an oil and gas temperature detection device is installed on the inlet pipeline outside the furnace body. The oil and gas temperature detection device is an oil and gas electrical contact temperature gauge, an oil and gas temperature sensor, or an oil and gas temperature transmitter.

[0015] Furthermore, the heat exchange coil is an S-shaped coil; the inlet pipeline is located above the outlet pipeline to form an upper inlet and lower outlet structure, and the S-shaped coil spirals downwards; or, the inlet pipeline is located below the outlet pipeline to form a lower inlet and upper outlet structure, and the S-shaped coil spirals upwards.

[0016] Beneficial effects: This utility model is an improved invention. It incorporates a temperature detection device on the crude oil or natural gas outlet pipeline and a density sensor, flow sensor, and solenoid valve on the high-temperature steam input pipeline, enabling dynamic monitoring, precise control, and energy efficiency optimization of the steam-water jacket boiler. Specific analysis follows: (1) This utility model realizes real-time monitoring of the density of input steam by setting up a density sensor. The change of steam density can determine whether the steam is saturated steam or superheated steam (the density of superheated steam is lower than that of saturated steam). Once the PLC control system detects that the steam in the input pipeline is in the state of superheated steam through the density sensor, it can transmit the signal remotely to the upstream steam generator in a timely manner to perform de-temperature and de-pressure treatment on the upstream steam to ensure that the steam input into the furnace is saturated steam and to ensure the heat exchange efficiency and heating stability of the steam water jacket furnace.

[0017] (2) This utility model monitors the steam flow rate in the input pipeline in real time through the setting of a flow sensor. The flow data is fed back to the PLC control system in real time. The PLC control system can dynamically adjust the opening of the solenoid valve on the steam input pipeline to ensure the stability of the inlet flow of the furnace shell and prevent uneven heating of the liquid in the tube due to fluctuations in steam flow. In addition, abnormal flow (such as a sudden drop) may indicate pipeline blockage or leakage. After the flow sensor feeds back the abnormal flow information to the PLC control system, it can trigger an alarm and link the protection device to avoid the occurrence of safety accidents.

[0018] (3) The combination of density sensor and flow sensor can feed back the density data and volumetric flow rate data of steam to the PLC control system in real time. The PLC control system can accurately calculate the steam mass flow rate, and combine the tube size, the oil and gas conveying velocity in the tube and the temperature difference between the oil and gas entering and leaving the furnace body, and adjust the opening of the solenoid valve in a timely and accurate manner according to the heat exchange load to control the steam mass flow rate, so that the input steam quantity can meet the requirement of heating the oil and gas at a specific flow rate to the required temperature during the entire tube, realizing the precise adjustment of the heat exchange load, avoiding steam energy waste and overheating of oil and gas after heating; the formula for calculating the steam mass flow rate is as follows:

[0019] in Steam mass flow rate, t / h; The volumetric flow rate of steam is m. 3 / h; The density of steam under the current operating conditions (pressure, temperature), in kg / m³. 3 .

[0020] (4) The PLC control system can realize long-term monitoring and recording of density and flow data. The long-term density-flow data can be used to analyze the scaling or corrosion trend of heat exchangers. For example, if the density is consistently high, it may indicate the accumulation of impurities in the steam input pipeline. If the sensor data is abnormal, it may indicate sensor failure or sensor contamination by the medium. The collaborative data information monitored by the density sensor and flow sensor can be used to guide the pre-maintenance of related equipment or pipelines (for example, if there is an expectation before the steam input pipeline is blocked, maintenance can be carried out in advance to avoid the risk of blockage). This avoids the occurrence of low-temperature freezing blockage of oil and gas transmission pipelines due to blockage of the steam input pipeline, thereby avoiding the occurrence of production accidents and ensuring the long-term stable operation of the steam water jacket boiler unit.

[0021] (5) When the fluid temperature in the outlet pipeline is lower than the set lower limit temperature, the PLC control system adjusts the opening of the solenoid valve to increase the amount of high-temperature steam entering the furnace. When the fluid temperature in the outlet pipeline is higher than the set upper limit temperature, the PLC control system adjusts the opening of the solenoid valve to reduce the amount of high-temperature steam entering the furnace. It should be noted that the control of this opening adjustment is not isolated from the temperature information. In fact, the PLC control system monitors the various data information detected by the temperature detection device, density sensor and flow sensor in real time, and integrates all the information to accurately control the opening of the solenoid valve, so as to meet the oil and gas heating requirements and take into account high heat exchange efficiency, low energy consumption and high heating stability.

[0022] (6) Steam is used instead of water as the heating medium, which avoids the need for burners, fire tubes and chimneys, thus avoiding the safety hazards of explosion during ignition and combustion and the pollution to the atmospheric environment.

[0023] In summary, this utility model achieves intelligent dynamic monitoring, precise control, and energy efficiency optimization of steam water jacket boilers through the coordinated application of density sensors, flow sensors, and temperature detection devices with a PLC control system. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the steam water jacket furnace device of this utility model; Figure 2 This is a schematic diagram of the safety valve of the steam water jacket boiler device of this utility model.

[0025] The components include: 1. Intelligent control remote transmission cabinet; 2. Density sensor; 3. Flow sensor; 4. Pressure detection device control valve; 5. Pressure gauge; 6. Solenoid valve; 7. Steam condenser pipe; 8. Furnace body; 9. Inlet valve; 10. Outlet valve; 11. Electrical contact thermometer; 12. Condensate electrical contact thermometer; 13. Condensate drain valve; 14. Water collection tank; 15. Heat exchange coil; 16. Connecting cable; 17. Steam input pipeline; 71. Positive U-shaped pipe section; 72. Arc-shaped baffle. Detailed Implementation

[0026] To address the problems in the background technology, the core inventive concept of this utility model is as follows: by using a PLC control system to monitor in real time the various data information detected by the temperature detection device, density sensor and flow sensor, and by comprehensively controlling all the information to precisely control the opening of the solenoid valve, the system can meet the heating requirements of oil and gas while also ensuring high heat exchange efficiency, low energy consumption and high heating stability, thereby realizing intelligent dynamic monitoring, precise control and energy efficiency optimization of the steam water jacket boiler.

[0027] The present invention will be further described in detail below with reference to an embodiment of a steam water jacket furnace device.

[0028] like Figure 1 As shown, the steam-water jacket boiler device of this utility model includes a boiler body 8 and an intelligent control remote transmission cabinet 1. The intelligent control remote transmission cabinet 1 constitutes a PLC control system. The boiler body 8 is equipped with heat exchange coils 15, thus dividing the boiler body 8 into a tube side and a shell side. The inlet and outlet of the tube side are used to connect to the oil and gas transmission pipeline, and the shell side is used to connect to the steam input pipeline 17. Specifically, a high-temperature steam inlet is provided at the top of the boiler body 8, and the high-temperature steam inlet is connected to the steam input pipeline 17. From upstream to downstream, the steam input pipeline 17 is sequentially equipped with a density sensor 2, a flow sensor 3, a pressure detection branch, and a solenoid valve 6. A pressure detection device is provided at the end of the pressure detection branch; in this embodiment, the pressure detection device is a pressure gauge 5. A pressure detection device control valve 4 is also provided on the pressure detection branch. The pressure detection device allows for real-time monitoring of the pressure of the high-temperature steam in the steam input pipeline 17, preventing excessively high steam pressure in the boiler body 8 from affecting the stable operation of the steam-water jacket boiler. The pressure detection device control valve 4 facilitates the disassembly and maintenance of the pressure gauge 5.

[0029] The furnace body 8 is equipped with an S-shaped heat exchange coil 15. Both the inlet and outlet pipes of the heat exchange coil 15 extend to the outside of the furnace body 8. The inlet pipe is positioned above the outlet pipe to form a top-in, bottom-out structure. An inlet valve 9 is installed on the inlet pipe, and an outlet valve 10 is installed on the outlet pipe. The S-shaped heat exchange coil ensures a long heat exchange tube length between the fluid and the heating medium, thereby ensuring the fluid can be heated to the required temperature. The top-in, bottom-out structure ensures that the lower-temperature fluid entering the furnace body 8 from the outside can immediately contact the high-temperature steam input from the top of the furnace body 8, thus rapidly increasing the fluid temperature and ensuring efficient fluid heating.

[0030] A temperature detection device, namely an electric contact thermometer 11, is installed on the outlet pipeline outside the furnace body 8. The PLC control system is electrically connected to the solenoid valve 6 and the electric contact thermometer 11 respectively. The PLC control system monitors the temperature information detected by the electric contact thermometer 11 in real time. When the fluid temperature in the outlet pipeline is lower than the set lower limit temperature, the PLC control system adjusts the opening of the solenoid valve 6 to increase the amount of high-temperature steam entering the furnace. When the fluid temperature in the outlet pipeline is higher than the set upper limit temperature, the PLC control system adjusts the opening of the solenoid valve 6 to reduce the amount of high-temperature steam entering the furnace. The upper and lower temperature limits are obtained by adding or subtracting a certain value from the temperature value to which the fluid needs to be heated.

[0031] The furnace body 8 has a condensate drain outlet at its bottom, connected to a condensate discharge pipeline. From upstream to downstream, the condensate discharge pipeline is equipped with a condensate electrical contact thermometer 12 and a condensate discharge valve 13. The outlet of the condensate discharge pipeline connects to a collection tank 14. Controlling the condensate discharge rate via the condensate discharge valve 9 reduces the internal space occupied by condensate in the furnace body 8, ensures sufficient steam intake, and allows for full utilization of the waste heat from the condensate to continue heating the heat exchange coil 15. This ensures the normal production and operation of the steam-water jacketed boiler, achieving safe, long-term, and stable operation. The condensate temperature is monitored by the condensate electrical contact thermometer 12. When the condensate temperature is low (lower than or equal to the temperature monitored by the electrical contact thermometer 11), the condensate is discharged promptly. When the condensate temperature is high (higher than the temperature monitored by the electrical contact thermometer 11), the condensate discharge valve 9 is closed, utilizing the waste heat of the condensate to heat the oil and gas.

[0032] like Figure 2 As shown, a steam condenser pipe 7 is installed at the top of the furnace body 8. The steam condenser pipe 7 constitutes a safety valve. The safety valve includes a bend and staggered arc-shaped baffles 72 arranged on the inner wall of the bend. The bend includes a U-shaped pipe section 71. The safety valve is designed to promptly discharge excess steam entering the furnace body 8, preventing the steam-water jacket boiler from operating under overpressure. A certain height of condensate is stored at the lowest point of the U-shaped pipe section 71 of the safety valve, which reduces steam heat loss and improves steam heat utilization while discharging excess steam.

[0033] The steam used in this steam-water jacket boiler is obtained by heating and vaporizing soft water. Because soft water contains little or no soluble calcium and magnesium compounds, it avoids excessive scaling and blockage in the boiler body 8 and heat exchange coils 15, thus extending the boiler's service life and significantly reducing the frequency of maintenance and cleaning, achieving convenient maintenance and reduced labor intensity. The electrical contact thermometer 11 and solenoid valve 6 of this steam-water jacket boiler are powered by low-voltage electricity. Since low-voltage electricity is within a safe voltage range, it prevents electric shock accidents during daily use, improving operational safety.

[0034] The working principle of this steam-water jacketed furnace device is as follows: High-temperature steam enters the furnace body 8 through the steam input pipeline 17 and the solenoid valve 6. The high-temperature steam inside the furnace body 8 directly exchanges heat with the heat exchange coil 15. After heat exchange, the steam condenses into water. The condensate flows to the bottom of the furnace body 8 under gravity and then flows through the condensate drain valve 9 into the water collection tank 14. By controlling the amount of condensate flowing out through the condensate drain valve 9, the internal space occupied by the condensate in the furnace body 8 can be reduced, and the waste heat from the condensate can be fully utilized to continue heating the heat exchange coil 15. The fluid in the heat exchange coil 15 is heated and then flows out of the furnace body 8 through the outlet valve 10. An electric contact thermometer 11 is installed at the outlet valve 10. A density sensor 2, a flow sensor 3, and a solenoid valve 6 are installed on the steam input pipeline 17. The PLC control system monitors the data detected by the density sensor 2, flow sensor 3, and electric contact thermometer 11 in real time, and accurately controls the opening of the solenoid valve 6 by integrating all the information, realizing intelligent dynamic monitoring, precise control, and energy efficiency optimization of the steam-water jacket boiler. A steam condenser pipe 7 is installed above the furnace body 8. The steam condenser pipe 7 constitutes a safety valve. When steam enters the furnace body 8, if the amount of steam entering exceeds the internal volume of the furnace body 8, the steam will be discharged in time through the steam condenser pipe 77 to prevent the furnace body 8 from operating under overpressure and to ensure the production operation of the furnace body 8. A certain height of condensate water is stored at the lower part of the "U"-shaped pipeline of the steam condenser pipe 77, which can reduce steam heat loss and improve steam heat utilization.

[0035] In the above embodiment, the pressure detection device is a pressure gauge 5, while in other embodiments, the pressure detection device in this embodiment is a pressure sensor or a pressure transmitter.

[0036] In the above embodiments, the temperature detection device is an electrical contact thermometer 11, while in other embodiments, the temperature detection device is a temperature sensor or a temperature transmitter.

[0037] In the above embodiments, the safety valve is a steam condenser pipe 7 composed of a bend and a baffle. In other embodiments, the safety valve may also be a lever-type pressure relief valve, a spring-type pressure relief valve, or a pilot-operated pressure relief valve.

[0038] In the above embodiments, the temperature detection device is automatically monitored by the PLC control system, and then the opening and closing of the condensate drain valve 13 is controlled. In other embodiments, the condensate electrical contact thermometer 12 is directly connected to the control circuit of the condensate drain valve 13 to achieve linkage between the two.

[0039] In the above embodiments, an electric contact thermometer 11 is installed on the outlet pipeline of the heat exchange coil 15. In other embodiments, an electric contact thermometer is also installed on the inlet pipeline of the heat exchange coil 15. The temperature rise of the oil and gas in the oil and gas pipeline after being heated by the steam water jacket furnace can be calculated from the difference between the two electric contact thermometers. This makes it easy to calculate the heat absorbed by the oil and gas per unit time, thereby calculating the heat load of the steam water jacket furnace and providing guidance for the efficient use of the steam water jacket furnace.

[0040] In the above embodiments, the heat exchange coil 15 is an S-shaped coil; the inlet pipeline is located above the outlet pipeline to form an upper-in, lower-out structure, and the S-shaped coil spirals downwards. In other embodiments, the inlet pipeline is located below the outlet pipeline to form a lower-in, upper-out structure, and the S-shaped coil spirals upwards. In this case, the residual heat in the condensate can be used to preheat the oil and gas in the heat exchange coil 15 that has just entered the furnace body. As the oil and gas flow from bottom to top in the heat exchange coil 15, the preheated oil and gas gradually come into contact with the high-temperature steam in the upper layer of the furnace body, thereby fully heating the oil and gas in the heat exchange coil 15.

[0041] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some technical features, or organically combine different types of specific implementation methods to create the specific implementation methods shown in the accompanying drawings. Of course, those skilled in the art can also create other specific implementation methods not shown in the accompanying drawings. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A steam water jacket boiler apparatus, comprising a boiler body and a shell side and a tube side of the boiler body composed of heat exchange coils within the boiler body, characterized in that: The inlet and outlet of the tube side are used to connect to oil and gas transmission pipelines, and the shell side is used to connect to an external steam input pipeline. A solenoid valve and a density sensor and a flow sensor located upstream of the solenoid valve are installed on the steam input pipeline. A condensate drain pipeline is connected to the bottom of the furnace body, and a condensate drain valve is installed on the condensate drain pipeline. The inlet and outlet pipelines of the heat exchange coil both extend to the outside of the furnace body, and a temperature detection device is installed on the outlet pipeline outside the furnace body. The steam-water jacket furnace also includes a PLC control system, which is electrically connected to the temperature detection device, density sensor, flow sensor, and solenoid valve.

2. The steam water jacket boiler apparatus according to claim 1, characterized in that: The steam input pipeline is also equipped with a pressure detection branch, and a pressure detection device is installed at the end of the pressure detection branch. The pressure detection device is electrically connected to the PLC control system. The pressure detection device is a pressure gauge, pressure sensor or pressure transmitter. A pressure detection device control valve is installed on the pressure detection branch.

3. The steam water jacket boiler apparatus according to claim 1, characterized in that: A condensate temperature detection device is installed upstream of the condensate discharge valve on the condensate discharge pipeline; the condensate temperature detection device is a condensate electrical contact thermometer, a condensate temperature sensor, or a condensate temperature transmitter.

4. The steam water jacket boiler apparatus according to claim 3, characterized in that: The condensate temperature detection device is a condensate electrical contact thermometer, which is directly connected to the condensate drain valve to automatically control the opening and closing of the condensate drain valve based on the temperature value detected by the condensate electrical contact thermometer.

5. The steam water jacket boiler apparatus according to claim 3, characterized in that: The condensate temperature detection device is a condensate temperature sensor or a condensate temperature transmitter. The condensate temperature sensor or condensate temperature transmitter is electrically connected to the PLC control system. The PLC control system monitors the temperature information detected by the condensate temperature sensor or condensate temperature transmitter in real time. When the condensate temperature exceeds the set upper temperature limit, the PLC control system controls the condensate drain valve to close. When the condensate temperature is lower than the set lower temperature limit, the PLC control system controls the condensate drain valve to open.

6. The steam water jacket boiler apparatus according to claim 1, characterized in that: The outlet of the condensate discharge pipeline is connected to the water collection tank; the temperature detection device is an electrical contact thermometer, a temperature sensor, or a temperature transmitter.

7. The steam water jacket boiler apparatus according to any one of claims 1 to 6, characterized in that: The steam input pipeline is connected to the top of the furnace body, and a safety valve is installed at the top of the furnace body.

8. The steam water jacket boiler apparatus according to claim 7, characterized in that: The safety valve includes a bend and staggered arc-shaped baffles arranged on the inner wall of the bend. The bend includes a U-shaped pipe section.

9. The steam water jacket boiler apparatus according to any one of claims 1 to 6, characterized in that: An oil and gas temperature detection device is installed on the inlet pipeline outside the furnace body. The oil and gas temperature detection device is an oil and gas electrical contact temperature gauge, an oil and gas temperature sensor, or an oil and gas temperature transmitter.

10. The steam water jacket boiler apparatus according to any one of claims 1 to 6, characterized in that: The heat exchange coil is an S-shaped coil; the inlet pipeline is located above the outlet pipeline to form an upper inlet and lower outlet structure, and the S-shaped coil spirals downwards; or, the inlet pipeline is located below the outlet pipeline to form a lower inlet and upper outlet structure, and the S-shaped coil spirals upwards.

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