Multifunctional electric heating vacuum boiler

Abstract

The utility model relates to the technical field of boilers, in particular to a multifunctional electric heating vacuum boiler which comprises a boiler body, a heat exchange tube is installed on the upper portion inside the boiler body, an electric heating tube is installed inside the boiler body, headers are installed at the two ends of the electric heating tube, an exhaust valve is arranged at the top of the header at one end of the heat exchange tube, and a blow-down valve is arranged at the bottom of the header at one end of the heat exchange tube. A water inlet and outlet pipe is arranged at the top of the other end of the heat exchange pipe. According to the multifunctional electric heating vacuum boiler, the U-shaped tubular electric heating element is adopted as a heating source, and the multifunctional electric heating vacuum boiler has the advantages of being high in heating efficiency, even in heating, not prone to local overheating and the like. The heat exchange tube can effectively transfer heat generated by the electric heating element to water or other media. The electric heating tube can further improve the heating efficiency. Headers are mounted at two ends of the electric heating tube, and can be conveniently connected with a power supply and a control system. The exhaust valve and the blow-down valve are arranged at the top of the header at one end of the heat exchange pipe, and gas and impurities can be exhausted in time.

Description

Technical Field

[0001] The utility model relates to the technical field of boilers, in particular to a multifunctional electric heating vacuum boiler. Background Art

[0002] With the increasing global attention to environmental issues, the demand for energy conservation and emission reduction is increasing, and reducing carbon emissions has become one of the top priorities. Developing clean energy such as nuclear power and wind power with low or zero carbon emissions is a major trend in my country's power construction. Electric vacuum boilers are devices that convert electrical energy into thermal energy by using the low boiling point of water under negative pressure.

[0003] Traditional electric vacuum boilers usually use a single electric heating element as a heating source, which has relatively low heating efficiency and is prone to problems such as local overheating. In addition, traditional electric vacuum boilers also have certain difficulties in maintenance and cleaning. Utility Model Content

[0004] The purpose of the utility model is to provide a multifunctional electric vacuum boiler to solve the problems mentioned in the above background technology that the traditional electric vacuum boiler usually uses a single electric heating element as a heating source, the heating efficiency is relatively low, and it is easy to cause local overheating. In addition, the traditional electric vacuum boiler also has certain difficulties in maintenance and cleaning.

[0005] To achieve the above-mentioned purpose, the utility model provides a multifunctional electric vacuum boiler, including a furnace body, a heat exchange tube is installed on the upper part of the furnace body, an electric heating tube is installed inside the furnace body, headers are installed at both ends of the electric heating tube, an exhaust valve is provided at the top of the header at one end of the heat exchange tube, a drain valve is provided at the bottom of the header at one end of the heat exchange tube, an inlet and outlet water pipe is provided at the top of the other end of the heat exchange tube, an electric heating tube box cabinet is provided at one end of the electric heating tube, and the tube seat of the electric heating tube is installed in the electric heating tube box cabinet.

[0006] Preferably, a return valve and an outlet valve are installed on the inlet and outlet water pipes, the return end of the electric heating pipe is connected to the return valve, and the outlet end of the electric heating pipe is connected to the outlet valve.

[0007] Preferably, a sewage pipe is provided at the bottom of one end of the furnace body.

[0008] Preferably, a condensate discharge port is provided in the middle of one side of the furnace body.

[0009] Preferably, a vacuum gauge, a temperature sensor and an over-temperature exhaust valve are installed on the top of the furnace body.

[0010] Preferably, a water level electrode is installed on one side wall of the furnace body, and a water level sight glass is installed on the other side wall of the furnace body.

[0011] Preferably, a condensate discharge pipe is installed at the bottom of the furnace body.

[0012] Preferably, the electric heating tube is a U-shaped tubular electric heating element.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] In this multifunctional electric vacuum boiler, a U-shaped tubular electric heating element is used as the heating source, which has the advantages of high heating efficiency, uniform heating, and not easy to produce local overheating. The heat exchange tube can effectively transfer the heat generated by the electric heating element to water or other media. Electric heating tubes are also installed inside the furnace body to further improve the heating efficiency. Headers are installed at both ends of the electric heating tube, which can be easily connected to the power supply and control system. An exhaust valve and a drain valve are set on the top of the header at one end of the heat exchange tube, which can discharge gas and impurities in time. An inlet and outlet water pipe is set on the top of the other end of the heat exchange tube, which can easily control the water flow and temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front view structural schematic diagram of the utility model;

[0016] Figure 2 It is a side view structural schematic diagram of the utility model;

[0017] Figure 3 It is a schematic diagram of the top structure of the utility model.

[0018] The meaning of each number in the figure is:

[0019] 1. Furnace body; 11. Drain pipe; 12. Condensate discharge port; 13. Vacuum gauge; 14. Temperature sensor; 15. Over-temperature exhaust valve; 16. Water level electrode; 17. Condensate discharge pipe; 18. Water level sight glass; 2. Heat exchange tube; 3. Electric heating tube; 31. Electric heating tube cabinet; 4. Collecting box; 41. Exhaust valve; 42. Drain valve; 5. Inlet and outlet water pipes; 51. Return valve; 52. Outlet valve. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] The utility model provides a multifunctional electric vacuum boiler. Figure 1-Figure 3As shown, it includes a furnace body 1, a heat exchange tube 2 is installed on the upper part of the furnace body 1, an electric heating tube 3 is installed inside the furnace body 1, headers 4 are installed at both ends of the electric heating tube 3, an exhaust valve 41 is arranged on the top of the header 4 at one end of the heat exchange tube 2, a sewage valve 42 is arranged on the bottom of the header 4 at one end of the heat exchange tube 2, an inlet and outlet water pipe 5 is arranged on the top of the other end of the heat exchange tube 2, an electric heating tube box cabinet 31 is arranged at one end of the electric heating tube 3, and the tube seat of the electric heating tube 3 is installed in the electric heating tube box cabinet 31.

[0022] In this embodiment, a return valve 51 and an outlet valve 52 are installed on the inlet and outlet water pipes 5, the return end of the electric heating tube 3 is connected to the return valve 51, and the outlet end of the electric heating tube 3 is connected to the outlet valve 52 for water inlet and outlet operations.

[0023] Specifically, a sewage pipe 11 is provided at the bottom of one end of the furnace body 1 for sewage discharge.

[0024] Furthermore, a condensate discharge port 12 is provided in the middle of one side of the furnace body 1 for discharging condensate in the middle.

[0025] Furthermore, a vacuum gauge 13, a temperature sensor 14 and an over-temperature exhaust valve 15 are installed on the top of the furnace body 1 for performing functions such as temperature detection and over-temperature exhaust.

[0026] Furthermore, a water level electrode 16 is installed on one side wall of the furnace body 1 for automatically monitoring the water level, and a water level sight glass 18 is installed on the other side wall of the furnace body 1 for manually checking the water level.

[0027] Furthermore, a condensed water discharge pipe 17 is installed at the bottom of the furnace body 1 for discharging condensed water.

[0028] Furthermore, the electric heating tube 3 is a U-shaped tubular electric heating element.

[0029] When the multifunctional electric vacuum boiler of the utility model is used, the electric heating tube 3 generates heat after being energized, and then the heat is transferred to water or other media through the heat exchange tube 2 to achieve the purpose of heating. First, turn on the power to energize the electric heating tube 3. The electric heating tube 3 starts to generate heat, and the heat is transferred to water or other media through the heat exchange tube 2. Due to the design of the heat exchange tube 2, the heat can be evenly transferred to water or other media, avoiding the problem of local overheating. The temperature of water or other media is monitored in real time by the temperature sensor 14. When the temperature reaches the set value, the control system controls the power of the electric heating tube 3 to keep the temperature stable. The water level is automatically monitored by the water level electrode 16. When the water level is lower than the set value, the control system controls the return valve 51 to open and replenish water. When the water level reaches the set value, the control system controls the return valve 51 to close. When the temperature is too high or too low, the over-temperature exhaust valve 15 will automatically open to discharge excess heat or replenish heat to keep the temperature stable. At the same time, when the pressure is too high or too low, the vacuum gauge 13 will automatically display the pressure value to remind the operator to pay attention to safety. Impurities and scale in the furnace body are regularly discharged through the drain valve 42 and the drain pipe 11. At the same time, the condensed water discharge port 12 and the condensed water discharge pipe 17 can discharge condensed water in time to keep the boiler dry and clean.

[0030] The device also provides heating water, domestic hot water, swimming pool heating and other multi-functional uses, and the water temperature can be adjusted as required. The boiler always maintains a negative pressure state during operation. It is not a pressure vessel, there is no danger of bursting and explosion, and there is no accident caused by lack of water in the main body. Safety protection interlocking devices such as vacuum pressure control switch, main body overheating protection device, thermal medium resistor, soluble safety valve, etc. are set to fundamentally ensure the safe operation of the unit. No water treatment equipment is required to achieve long-term operation of the boiler heating surface without scaling, which fundamentally solves the accidents caused by scaling, such as boiler bursting, drum bulging, and overheating of steel on the heating surface. Since the boiler water is in a saturated state during operation and the oxygen content in the boiler water is extremely low, oxygen corrosion of the boiler no longer exists, greatly extending the service life of the boiler.

[0031] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A multifunctional electric vacuum boiler, comprising a furnace body (1), characterized in that: A heat exchange tube (2) is installed above the interior of the furnace body (1), an electric heating tube (3) is installed inside the furnace body (1), headers (4) are installed at both ends of the electric heating tube (3), an exhaust valve (41) is provided at the top of the header (4) at one end of the heat exchange tube (2), a sewage valve (42) is provided at the bottom of the header (4) at one end of the heat exchange tube (2), an inlet and outlet water pipe (5) is provided at the top of the other end of the heat exchange tube (2), an electric heating tube box cabinet (31) is provided at one end of the electric heating tube (3), and a tube seat of the electric heating tube (3) is installed in the electric heating tube box cabinet (31).

2. The multifunctional electric vacuum boiler according to claim 1, characterized in that: A return valve (51) and a water outlet valve (52) are installed on the water inlet and outlet pipes (5); the return end of the electric heating pipe (3) is connected to the return valve (51), and the outlet end of the electric heating pipe (3) is connected to the water outlet valve (52).

3. The multifunctional electric vacuum boiler according to claim 1 is characterized in that: A sewage discharge pipe (11) is provided at the bottom of one end of the furnace body (1).

4. The multifunctional electric vacuum boiler according to claim 1, characterized in that: A condensed water discharge port (12) is provided in the middle of one side of the furnace body (1).

5. The multifunctional electric vacuum boiler according to claim 1, characterized in that: A vacuum gauge (13), a temperature sensor (14) and an over-temperature exhaust valve (15) are installed on the top of the furnace body (1).

6. The multifunctional electric vacuum boiler according to claim 1, characterized in that: A water level electrode (16) is installed on one side wall of the furnace body (1), and a water level sight glass (18) is installed on the other side wall of the furnace body (1).

7. The multifunctional electric vacuum boiler according to claim 1, characterized in that: A condensate discharge pipe (17) is installed at the bottom of the furnace body (1).

8. The multifunctional electric vacuum boiler according to claim 1, characterized in that: The electric heating tube (3) is a U-shaped tubular electric heating element.

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