Steam-water separation device for gas-fired boiler

Abstract

The utility model discloses a steam-water separation device for a gas-fired boiler, which belongs to the field of gas-fired steam boilers and comprises a separator barrel, a primary steam-water separation device and a secondary steam-water separation device. The primary steam-water separation device and the secondary steam-water separation device are both arranged in the separator barrel, and when mixed steam with high water content enters the separator barrel, the mixed steam is treated by the primary steam-water separation device and the secondary steam-water separation device in sequence, so that steam-water separation in the mixed steam is realized. The secondary steam-water separation device is combined, saturated water in mixed steam is removed through the primary steam-water separation device, small particles in the steam are removed through the secondary steam-water separation device, the problem of incomplete steam-water separation of steam entering a superheater of a gas boiler can be solved, and the steam-water separation efficiency of the superheater is improved. The steam separation efficiency is effectively improved, so that the steam quality is improved.

Description

Technical Field

[0001] This utility model belongs to the field of gas-fired steam boilers, and specifically relates to a steam-water separation device for gas-fired boilers. Background Technology

[0002] For gas-fired boilers, steam quality is crucial for product production. Reducing water carryover in steam and improving steam quality can effectively increase efficiency.

[0003] In the existing technology, gas boilers consist of two main components: the main body and the superheater. The steam generated by the main body enters the superheater for heating. If the steam and water are not completely separated in the upper drum, or if the boiler operating pressure is low, resulting in an increase in the specific volume of steam or insufficient drum volume, the steam entering the superheater will carry water seriously, affecting the normal operation of the superheater and its thermal efficiency.

[0004] Therefore, designing a steam-water separation device between the main body components and the superheater components of a gas-fired boiler to effectively solve the problem of incomplete steam-water separation has become a problem that needs to be solved. Utility Model Content

[0005] In view of the above-mentioned problems in the existing technology, the technical problem to be solved by this utility model is to provide a steam-water separation device for gas boilers, which can effectively separate gas and water vapor by blocking and guiding steam with baffles and the electrostatic effect of steam in the wire mesh, thereby improving the steam-water separation efficiency.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A steam-water separation device for a gas-fired boiler includes a separator cylinder, a primary steam-water separation device, and a secondary steam-water separation device. Both the primary and secondary steam-water separation devices are located inside the separator cylinder. When mixed steam with a high water content enters the separator cylinder, it passes through the primary and secondary steam-water separation devices successively to achieve the separation of steam and water in the mixed steam.

[0008] Furthermore, the separator cylinder includes a steam outlet, a mixed gas inlet, a drain outlet, and a fixing device; the steam outlet is located at the top of the separator cylinder; the mixed gas inlet is located at the bottom of the separator cylinder; the drain outlet is located at the bottom end of the separator cylinder; and the fixing device is located on the outside of the separator cylinder, which can strengthen the fixation of the entire steam-water separation device.

[0009] Furthermore, the primary gas-water separation device includes a mixed gas baffle, a slit baffle, and an airflow buffer plate; the mixed gas baffle and the slit baffle are fixedly connected and are jointly disposed on the inner side of the bottom of the separator cylinder.

[0010] Furthermore, the airflow buffer plate is fixedly installed on the inner side of the bottom of the separator cylinder and is directly opposite the gap baffle.

[0011] Furthermore, the secondary steam-water separation device is fixedly installed on the inner side of the top of the separator cylinder.

[0012] Furthermore, the secondary steam-water separation device includes a steel wire separation layer and a heating layer; the steel wire separation layer is disposed below the heating layer.

[0013] Furthermore, the wire separation layer includes a wire mesh, a restraint device, an air vent plate, and an auxiliary restraint device; both ends of the wire mesh are fixedly mounted on the restraint device by positioning screws, and the wire mesh is provided with a plurality of auxiliary restraint devices, the lower end of which is fixedly connected to the air vent plate.

[0014] Furthermore, the heating layer includes a heating device and an arc-shaped heating rod; the heating device fixes the arc-shaped heating rod with positioning screws.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] (1) This utility model can effectively solve the problem of incomplete steam-water separation in the steam entering the superheater of the gas boiler. The final steam separation efficiency obtained by the wire mesh is as high as 85%, which effectively improves the steam separation efficiency. Smaller particles will be trapped on the surface of the wire due to electrostatic effect, thereby improving the steam quality.

[0017] (2) This utility model adopts a two-stage steam-water separation device in combination. First, the saturated water in the mixed steam is removed by the primary steam-water separation device, and then the smaller particles in the steam are removed by the secondary steam-water separation device, so as to finally obtain pure steam with better steam-water separation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the secondary steam-water separation device of this utility model;

[0020] Figure 3 This is a schematic diagram of the front structure of the gap baffle of this utility model.

[0021] The attached diagram is labeled as follows: 1. Steam outlet; 2. Separator cylinder; 3. Mixed gas baffle; 4. Mixed gas inlet; 5. Slit baffle; 6. Airflow buffer plate; 7. Drain outlet; 8. Fixing device; 9. Secondary steam-water separation device; 901. Wire mesh; 902. Constraint device; 903. Orifice plate; 904. Auxiliary constraint device; 905. Heating device; 906. Positioning screw; 907. Arc-shaped heating rod. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings.

[0023] Please see the appendix Figures 1-3 A steam-water separation device for a gas-fired boiler includes a separator cylinder 2, a primary steam-water separation device, and a secondary steam-water separation device 9. Both the primary and secondary steam-water separation devices 9 are located inside the separator cylinder 2. When mixed steam with a high water content enters the separator cylinder 2, it is processed by the primary and secondary steam-water separation devices 9 in succession, ultimately achieving the separation of steam and water in the mixed steam.

[0024] The separator cylinder 2 includes a steam outlet 1, a mixed gas inlet 4, a drain outlet 7, and a fixing device 8. The steam outlet 1 is located at the top of the separator cylinder 2 and is connected to a conduit leading to the superheater of the gas-fired boiler, which can discharge the steam after two steam-water separations in the separator cylinder 2. The mixed gas inlet 4 is located at the bottom of the separator cylinder 2 and is connected to a conduit leading to the main body of the gas-fired boiler, which can introduce the mixed steam obtained from the main body of the gas-fired boiler into the separator cylinder 2. The drain outlet 7 is located at the bottom of the separator cylinder 2 and is mainly used to discharge the liquid water obtained after steam-water separation in the separator cylinder 2. The fixing device 8 is located on one side of the separator cylinder 2 and is used to strengthen and fix the entire steam-water separation device.

[0025] The primary steam-water separator includes a mixed gas baffle 3, a slit baffle 5, and an airflow buffer plate 6. The mixed gas baffle 3 and the slit baffle 5 are fixedly connected and are jointly disposed on the inner side of the bottom of the separator cylinder 2. The internal cavity formed by the mixed gas baffle 3 and the slit baffle 5 can completely cover the mixed gas inlet 4. When the mixed steam enters the separator cylinder 2 from the mixed gas inlet 4, the mixed airflow changes direction due to the obstruction of the mixed gas baffle 3 and passes through the slit baffle 5 in sequence, thereby reducing the impact of the mixed steam and guiding the uniform diffusion of the mixed steam. The airflow buffer plate 6 is fixedly disposed on the inner side of the bottom of the separator cylinder 2 and is directly opposite the slit baffle 5. When the mixed airflow passes through the slit baffle 5, it will be blocked again by the airflow buffer plate 6, further reducing the impact of the mixed steam and making the mixed steam uniformly fill the separator cylinder 2. In this process, some saturated water can be removed, and the separated saturated water is discharged from the lower drain port 7.

[0026] The secondary steam-water separation device 9 is fixedly installed on the top inner side of the separator cylinder 2. The secondary steam-water separation device 9 includes a steel wire separation layer and a heating layer. The steel wire separation layer is located below the heating layer. After the first steam-water separation, the steam first passes through the steel wire separation layer for steam-water separation, and then rises to the heating layer. The heated steam is discharged from the steam outlet 1.

[0027] like Figure 2 As shown, the wire separation layer includes a wire mesh 901, a constraint device 902, an air vent plate 903, and an auxiliary constraint device 904. The two ends of the wire mesh 901 are fixedly mounted on the constraint device 902 by positioning screws 906. Several auxiliary constraint devices 904 are provided in the wire mesh 901. The lower end of the auxiliary constraint device 904 is fixedly connected to the air vent plate 903. Steam enters the wire mesh 901 through the air vent plate 903. The smaller particles remaining in the steam will adhere to the surface of the wire mesh 901 due to electrostatic effect and be trapped, while the gas will pass through the wire mesh 901 and enter the heating layer above, thereby achieving steam-water separation again and improving the quality of the steam.

[0028] The heating layer includes a heating device 905 and an arc-shaped heating rod 907. The heating device 905 fixes the arc-shaped heating rod 907 with a positioning screw 906. The arc-shaped heating rod 907 heats the rising airflow to prevent the rising airflow from cooling down and liquefying, thus avoiding the generation of moisture in the steam and ensuring that the gas discharged from the steam outlet 1 can achieve efficient steam-water separation.

[0029] The working principle of this invention is as follows: When the mixed steam enters the separator cylinder 2 from the mixed gas inlet 4, the mixed gas baffle 3 causes the mixed gas flow direction to change. The baffle 5 further reduces the impact of the mixed steam and guides its uniform diffusion. When the mixed gas flow continues to diffuse to the airflow buffer plate 6 after passing through the baffle 5, it is again blocked by the buffer plate 6, further reducing the impact of the mixed steam and ensuring that the mixed steam evenly fills the separator cylinder 2. During this process, some saturated water is removed, and the separated saturated water is discharged from the lower drain port 7, while the airflow continues to diffuse upwards. After the first steam-water separation, the steam diffuses to the wire mesh separation layer, entering the wire mesh 901 through the perforated plate 903. The remaining smaller particles in the steam are trapped on the surface of the wire mesh 901 due to electrostatic effects, while the gas passes through the wire mesh 901 and enters the upper heating layer, thus achieving steam-water separation again and improving the quality of the steam. As the rising steam passes through the arc-shaped heating rod 907, it will be heated, which greatly reduces the possibility of the gas flow liquefying due to the temperature drop and avoids the generation of moisture in the steam, thus obtaining pure steam with high separation efficiency.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A steam-water separator for a gas-fired boiler, characterized in that, The system includes a separator cylinder (2), a primary steam-water separation device, and a secondary steam-water separation device (9). Both the primary and secondary steam-water separation devices (9) are located inside the separator cylinder (2). When mixed steam with a high water content enters the separator cylinder (2), it passes through the primary and secondary steam-water separation devices (9) to separate the steam and water in the mixed steam. The primary steam-water separation device includes a mixed gas baffle (3), a slit baffle (5), and an airflow buffer plate (6). The mixed gas baffle (3) and the slit baffle (5) are fixedly connected and are located together on the inner side of the bottom of the separator cylinder (2). The airflow buffer plate (6) is fixedly located on the inner side of the bottom of the separator cylinder (2) and is directly opposite the slit baffle (5). The secondary steam-water separation device (9) is fixedly located on the inner side of the top of the separator cylinder (2). The secondary steam-water separation device (9) includes a wire separation layer and a heating layer. The wire separation layer is located below the heating layer.

2. The steam-water separator for a gas-fired boiler according to claim 1, characterized in that, The separator cylinder (2) includes a steam outlet (1), a mixed gas inlet (4), a drain outlet (7), and a fixing device (8); the steam outlet (1) is located at the top of the separator cylinder (2); the mixed gas inlet (4) is located at the bottom of the separator cylinder (2); the drain outlet (7) is located at the bottom of the separator cylinder (2); and the fixing device (8) is located on the outside of the separator cylinder (2) to strengthen the fixing of the entire steam-water separation device.

3. The steam-water separator for a gas-fired boiler according to claim 1, characterized in that, The wire separation layer includes a wire mesh (901), a restraint device (902), an air vent plate (903), and an auxiliary restraint device (904). The two ends of the wire mesh (901) are fixedly mounted on the restraint device (902) by positioning screws (906). The wire mesh (901) is provided with a plurality of auxiliary restraint devices (904), and the lower end of the auxiliary restraint device (904) is fixedly connected to the air vent plate (903).

4. The steam-water separator for a gas-fired boiler according to claim 1, characterized in that, The heating layer includes a heating device (905) and an arc-shaped heating rod (907); the heating device (905) fixes the arc-shaped heating rod (907) by a positioning screw (906).

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