An inner container of an electrically heated steam generator

Abstract

The utility model discloses an inner bag of electric heating steam generator, including the body of gall -bladder, be equipped with heating assembly in the body of gall -bladder, be equipped with water inlet pipe and steam outlet pipe on the body of gall -bladder for adding water and steam, be equipped with the communicating pipe on the body of gall -bladder, the lower part of the body of gall -bladder is extended to one end of communicating pipe, and the upper of the body of gall -bladder is extended to the other end, be equipped with the communicating hole on communicating pipe, the communicating hole is located in the body of gall -bladder, be provided with liquid level sensor in communicating pipe. In the utility model, the communicating pipe is arranged on the body of gall -bladder, and the communicating pipe is fixedly connected with the body of gall -bladder through welding, the steam generator inner bag is simple and convenient to make, can save manual work, and can reduce the risk of leakage simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of steam generator technology, and in particular to the inner liner of an electrically heated steam generator. Background Technology

[0002] A steam generator is a mechanical device that uses the thermal energy of fuel or other energy sources to heat water into hot water or steam. An electric steam generator, on the other hand, uses electric heating elements to heat water and turn it into steam. Electric steam generators typically have an inner tank. Water is added to the inner tank, and the electric heating elements heat the water, turning it into steam, which is then discharged from the inner tank. To ensure safety, a liquid level sensor is usually installed on the inner tank to monitor the liquid level in real time. Currently, most inner tanks... Figure 1 As shown, a connecting pipe is usually installed on the outside of the inner liner. The connecting pipe and the inner liner are connected by a connecting pipe. A liquid level sensor is installed inside the connecting pipe to monitor the water level. However, the connecting pipe, the connecting pipe and the inner liner are usually fixed by welding, which makes the manufacturing process more complicated. At the same time, due to the effect of thermal expansion and contraction during the welding process, it is difficult to keep the connecting pipe in a vertical state, which makes installation and assembly difficult. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of the prior art by providing an inner liner for an electric heating steam generator.

[0004] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0005] An inner tank of an electric heating steam generator includes a tank body, a heating component inside the tank body, a water inlet pipe and a steam outlet pipe on the tank body for adding water and releasing steam; a connecting pipe is provided on the tank body, one end of the connecting pipe extends to the lower part of the tank body and the other end extends to the upper part of the tank body, a connecting hole is opened on the connecting pipe and the connecting hole is located inside the tank body, and a liquid level sensor is provided inside the connecting pipe.

[0006] Preferably, the inner tank includes a heating cylinder, a bottom plate is provided at the lower end of the heating cylinder, a top plate is provided at the upper end of the heating cylinder, and the water inlet pipe, steam outlet pipe and connecting pipe are all provided on the top plate.

[0007] Preferably, the top plate is further provided with a pressure relief valve connecting pipe, which is connected to the interior of the heating cylinder, and a pressure relief valve is provided on the pressure relief valve connecting pipe.

[0008] Preferably, a pressure gauge connecting pipe is provided on the top plate, the pressure gauge connecting pipe is connected to the interior of the heating cylinder, and a pressure gauge is provided on the pressure gauge connecting pipe.

[0009] Preferably, a heat-conducting pipe is provided on the side wall of the heating cylinder, the heat-conducting pipe is located at the lower part of the heating cylinder, a flange is provided at the end of the heat-conducting pipe away from the heating cylinder, the heating assembly includes a sealing plate, the sealing plate is connected to the flange, a heating pipe is provided on the sealing plate, and the heating pipe extends through the heat-conducting pipe into the heating cylinder.

[0010] Preferably, the connecting pipe is located on one side of the heating pipe, and the lower end of the connecting pipe is located below the heating pipe.

[0011] Preferably, the upper end of the connecting pipe is threaded with a reducing nut, the reducing nut comprising a first connecting pipe, a screwing block, and a second connecting pipe, the screwing block being located between the first connecting pipe and the second connecting pipe, the inner diameter of the first connecting pipe being smaller than the inner diameter of the second connecting pipe, the first connecting pipe being threadedly connected to the connecting pipe, and the second connecting pipe being threadedly connected to the liquid level sensor.

[0012] Preferably, a drain pipe is provided at the bottom of the gallbladder.

[0013] The beneficial effects of adopting the above technical solution are as follows:

[0014] In this invention, a connecting pipe is connected to the inner tank. The connecting pipe is located inside the inner tank and a liquid level sensor is installed on the connecting pipe. Since the connecting pipe is located inside the inner tank, water from the inner tank will also enter the connecting pipe, making the water level in the connecting pipe the same as the water level in the inner tank. The liquid level sensor can monitor the water level. Furthermore, since the connecting pipe is located inside the inner tank, the installation process is simple, and the evaporator inner tank is easy and quick to manufacture, greatly saving labor. At the same time, there are fewer welds between the connecting pipe and the inner tank, which can reduce the risk of air leakage. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the prior art of this utility model;

[0016] Figure 2 This is a three-dimensional schematic diagram of the present invention;

[0017] Figure 3 This is an exploded view of this utility model;

[0018] Figure 4 This is a three-dimensional schematic diagram of the variable diameter connecting nut of this utility model.

[0019] In the diagram: 1 is the tank body, 2 is the water inlet pipe, 3 is the steam outlet pipe, 4 is the connecting pipe, 5 is the connecting hole, 6 is the liquid level sensor, 7 is the heating cylinder, 8 is the bottom plate, 9 is the top plate, 10 is the pressure relief valve connecting pipe, 11 is the pressure relief valve, 12 is the pressure gauge connecting pipe, 13 is the pressure gauge, 14 is the heat conduction pipe, 15 is the flange, 16 is the sealing plate, 17 is the heating pipe, 18 is the reducing connecting nut, 19 is the first connecting pipe, 20 is the screwing block, 21 is the second connecting pipe, and 22 is the drain pipe. Detailed Implementation

[0020] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Currently, the inner tanks of most electric heating steam generators on the market are like... Figure 1 As shown, a connecting pipe for housing a hydraulic sensor is provided on the outer side of the inner liner. The connecting pipe and the inner liner are connected by a connecting pipe. Therefore, the inner liner and the connecting pipe need to be welded together, and the connecting pipe and the connecting pipe also need to be welded together. However, there are two connecting pipes, located at the upper and lower parts of the connecting pipe respectively. This makes it difficult to keep the connecting pipe vertical during welding, leading to gaps in the weld and causing leakage. Based on the above technical problems, this application proposes an inner liner for an electric heating steam generator, such as... Figure 2As shown, the system includes a tank 1, which is a closed cylindrical structure. A heating element is installed inside the tank 1 to heat the water inside the tank 1 into steam. The tank 1 is equipped with a water inlet pipe 2 and a steam outlet pipe 3 for adding water into the tank 1 and venting steam from the tank 1. A connecting pipe 4 is installed on the tank 1. The connecting pipe 4 is located at the top of the tank 1, with its lower end inside the tank 1 and extending to the lower part of the tank 1. The lower end of the connecting pipe 4 is below the heating element, and its upper end extends above the tank 1. A connecting hole 5 is opened on the connecting pipe 4, which is located inside the tank 1 and above the liquid level inside the tank 1. A liquid level sensor 6 is installed inside the connecting pipe 4. The liquid level sensor 6 is a water level probe type sensor used in boilers.

[0024] In this invention, boiler water enters the tank 1 through the inlet pipe 2. The heating element heats the water in the tank 1, turning it into steam, which is then discharged through the steam outlet pipe 3. During this process, the connecting pipe 4 is located inside the tank 1, with its lower end below the liquid surface and below the heating element. Therefore, water can enter the connecting pipe 4 from its lower end. The connecting hole 5 on the connecting pipe 4 is located above the liquid surface, thus maintaining the same pressure between the connecting pipe 4 and the tank 1, and keeping the liquid surface of the connecting pipe 4 and the tank 1 at the same plane. A liquid level sensor 6 is installed inside the connecting pipe 4 to monitor the liquid level height, thereby monitoring the liquid level height inside the tank 1. The connecting pipe 4 is directly welded and fixed to the tank 1, making the installation process simple. There is only one weld between the connecting pipe 4 and the tank 1, resulting in fewer welds and reducing the chance of air leakage in the inner tank, thus making the tank 1 more tightly sealed.

[0025] On the market, such as Figure 1 In the steam generator inner tank shown, the water inlet pipe is generally located at the bottom of the inner tank. The water inlet pipe is connected to the water pump via a pipe, and the water pump is installed on the pipe to pump water from the water tank into the inner tank. However, the water tank is generally located on one side of the inner tank. When the water level in the tank is higher than the inner tank, when the steam generator is stopped, water from the tank will slowly seep into the inner tank through the pipe, filling the inner tank. If there is too much water in the inner tank, water can easily spray out during heating. Therefore, in this embodiment, as... Figure 2 and Figure 3As shown, the tank 1 includes a heating cylinder 7, which is a cylindrical structure with both ends open. A base plate 8 is provided at the lower end of the heating cylinder 7, and the base plate 8 is welded to the heating cylinder 7 to seal the lower end of the heating cylinder 7. A top plate 9 is provided at the upper end of the heating cylinder 7, and the top plate 9 is also welded to the heating cylinder 7 to seal the upper end of the heating cylinder 7, thus forming a closed structure for the tank 1. The water inlet pipe 2, steam outlet pipe 3, and connecting pipe 4 are all located on the top plate 9. The water inlet pipe 2 is located at the top of the tank 1 and can be connected to the water tank via a bend. Therefore, water in the water tank can only be drawn into the tank 1 by a water pump and will not seep into the tank 1 through the pipes, making the water volume in the tank 1 easier to control.

[0026] Furthermore, a pressure relief valve connecting pipe 10 is also provided on the top plate 9. The pressure relief valve connecting pipe 10 is connected to the interior of the heating cylinder 7, and a pressure relief valve 11 is provided on the pressure relief valve connecting pipe 10. In this embodiment, when the pressure inside the heating cylinder 7 is too high and exceeds the pressure set by the pressure relief valve 11, steam can be discharged from the pressure relief valve 11 to prevent the tank 1 from bursting due to excessive pressure, thus protecting the equipment and personnel safety.

[0027] Furthermore, a pressure gauge connecting pipe 12 is provided on the top plate 9. The pressure gauge connecting pipe 12 is connected to the interior of the heating cylinder 7. A pressure gauge 13 is provided on the pressure gauge connecting pipe 12. The pressure gauge 13 can quickly observe the pressure inside the chamber 1, and the pressure value can be obtained in real time.

[0028] Furthermore, a heat-conducting pipe 14 is provided on the side wall of the heating cylinder 7. The heat-conducting pipe 14 is located at the lower part of the heating cylinder 7, and a flange 15 is provided at the end of the heat-conducting pipe 14 away from the heating cylinder 7. The heating assembly includes a sealing plate 16, which is connected to the flange 15. A heating pipe 17 is provided on the sealing plate 16. The heating pipe 17 extends through the heat-conducting pipe 14 into the heating cylinder 7. The heating pipe 17 is an electric heating pipe, which heats the water in the heating cylinder 7 by electric heating. A connecting pipe 4 is located on one side of the heating pipe 17, and the lower end of the connecting pipe 4 is located below the heating pipe 17. In this embodiment, the heated water becomes steam and is discharged from above the liquid surface, while the water below the heating pipe 17 is in a non-boiling state. Therefore, the water below the heating pipe 17 is relatively stable. The water below the heating pipe 17 can enter the connecting pipe 4 for water level monitoring, thus maintaining the water in the connecting pipe 4 in a stable state and enabling more accurate real-time monitoring of the liquid level, making the water level monitoring results more accurate.

[0029] Furthermore, such as Figure 4As shown, the upper end of the connecting pipe 4 is threaded with a reducing nut 18. The reducing nut 18 includes a first connecting pipe 19, a screwing block 20, and a second connecting pipe 21. The screwing block 20 is located between the first connecting pipe 19 and the second connecting pipe 21. The screwing block 20 has a hexagonal structure, which facilitates the insertion and screwing of a wrench. The screwing block 20 has a through hole in the middle for communication with the first connecting pipe 19 and the second connecting pipe 21, so that the liquid level sensor 6 can be smoothly inserted into the tank 1. Since the diameter of the threaded connection between the liquid level sensor 6 and the reducing nut 18 is relatively large, the inner diameter of the first connecting pipe 19 is smaller than the inner diameter of the second connecting pipe 21. The first connecting pipe 21 is threadedly connected to the connecting pipe 4, and the second connecting pipe 21 can be threadedly connected to the liquid level sensor 6.

[0030] Furthermore, the bottom of the inner tank 1 is provided with a drain pipe 22, and a valve is provided on the drain pipe 22 to control the opening and closing of the drain pipe 22. The drain pipe 22 is used to drain the water in the inner tank 1.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An inner liner of an electrically heated steam generator, characterized in that, The device includes a tank (1), which is equipped with a heating component. The tank (1) is equipped with a water inlet pipe (2) and a steam outlet pipe (3) for adding water and releasing steam. The tank (1) is equipped with a connecting pipe (4), one end of which extends to the lower part of the tank (1) and the other end extends to the upper part of the tank (1). The connecting pipe (4) is provided with a connecting hole (5), which is located inside the tank (1). A liquid level sensor (6) is provided inside the connecting pipe (4).

2. An inner liner for an electrically heated steam generator according to claim 1, characterized in that The inner tank (1) includes a heating cylinder (7), a bottom plate (8) is provided at the lower end of the heating cylinder (7), and a top plate (9) is provided at the upper end of the heating cylinder (7). The water inlet pipe (2), the steam outlet pipe (3) and the connecting pipe (4) are all provided on the top plate (9).

3. An inner liner for an electrically heated steam generator according to claim 2, wherein The top plate (9) is also provided with a pressure relief valve connecting pipe (10), which is connected to the interior of the heating cylinder (7), and a pressure relief valve (11) is provided on the pressure relief valve connecting pipe (10).

4. The inner liner of an electrically heated steam generator according to claim 2, characterized in that A pressure gauge connecting pipe (12) is provided on the top plate (9), and the pressure gauge connecting pipe (12) is connected to the interior of the heating cylinder (7). A pressure gauge (13) is provided on the pressure gauge connecting pipe (12).

5. An inner liner for an electrically heated steam generator according to claim 2, wherein The heating cylinder (7) has a heat-conducting pipe (14) on its side wall. The heat-conducting pipe (14) is located at the lower part of the heating cylinder (7). The end of the heat-conducting pipe (14) away from the heating cylinder (7) has a flange (15). The heating assembly includes a sealing plate (16). The sealing plate (16) is connected to the flange (15). The sealing plate (16) has a heating pipe (17). The heating pipe (17) extends through the heat-conducting pipe (14) into the heating cylinder (7).

6. The inner liner of an electrically heated steam generator according to claim 5, characterized in that, The connecting pipe (4) is located on one side of the heating pipe (17), and the lower end of the connecting pipe (4) is located below the heating pipe (17).

7. The inner liner of an electrically heated steam generator according to claim 1, characterized in that, The upper end of the connecting pipe (4) is threaded with a reducing nut (18). The reducing nut (18) includes a first connecting pipe (19), a screwing block (20), and a second connecting pipe (21). The screwing block (20) is located between the first connecting pipe (19) and the second connecting pipe (21). The inner diameter of the first connecting pipe (19) is smaller than the inner diameter of the second connecting pipe (21). The first connecting pipe (19) is threaded to the connecting pipe (4), and the second connecting pipe (21) is threaded to the liquid level sensor (6).

8. The inner liner of an electrically heated steam generator according to claim 1, characterized in that, The bottom of the bladder (1) is provided with a drain pipe (22).

Images