Boiler soot blower with connecting and sealing assembly

Abstract

The utility model relates to a boiler soot blower with a connecting and sealing assembly, which belongs to the technical field of boiler soot blowers and comprises a machine body, a lifting valve, a soot blowing pipe and a butt joint pipe. A lifting valve is assembled on the machine body, and a soot blowing pipe connected with the machine body is mounted on the lifting valve; the butt joint pipe is provided with a butt joint sealing assembly for connecting and sealing a butt joint pipeline; the butt joint pipe is further provided with a pressurization sealing assembly which is connected with the connecting flange of the lift valve and achieves sealing. The butt joint sealing assembly comprises an outer threaded pipe communicated with the butt joint pipe and a pipeline inserting groove formed in the end of the butt joint pipe and located on the outer side of the outer threaded pipe. According to the boiler soot blower with the connection sealing assembly, the butt-joint sealing assembly guarantees the butt-joint sealing performance of the butt-joint pipe and the connection pipeline, meanwhile, the connection sealing performance of the butt-joint pipe and the lifting valve is improved through the arranged pressurization sealing assembly under the condition of high air flow pressure, and connection air leakage is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler soot blowers, and particularly relates to a boiler soot blower with a connection sealing component. Background Technique

[0002] A boiler soot blower is a device used to remove the ash deposited on the heating surface of a boiler. It is usually composed of components such as a soot blowing pipe and an operation valve. Generally, they are respectively arranged on the furnace walls of the boiler furnace, horizontal flue, and tail flue, etc. According to the structural type, there are several types such as gun type, rotary type, telescopic type, etc. According to the different media used, there are three types: air soot blower, steam soot blower, and hydraulic soot blower. The air soot blower uses the high-pressure air flow impact of compressed air to blow away the ash on the heating surface; it is commonly used in industrial boilers. The steam soot blower uses the high-speed jet impact of superheated steam to remove the ash on the heating surface and is mostly applied to various power plant boilers.

[0003] Among them, in the prior art, the soot blower is connected to a lift valve, and the lift valve is butted through a flange and locked to a fixed butted pipe with bolts. At the same time, a sealing gasket is arranged between the flanges to ensure the sealing performance of the connection between the lift valve flange and the pipe flange. However, with such a sealing method, the change of the gasket gap is likely to be caused by the change of air pressure and the influence of the external environment, affecting the connection sealing performance. Therefore, this application designs a boiler soot blower that improves the connection sealing performance to solve this defect of the prior art. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a boiler soot blower with a connection sealing component, which has the advantages of improving the connection sealing effect, etc.

[0005] To achieve the above object, the utility model provides the following technical solution: A boiler soot blower with a connection sealing component, comprising a machine body, a lift valve, a soot blowing pipe, and a butted pipe;

[0006] The lift valve is assembled on the machine body, and a soot blowing pipe connected to the machine body is installed on the lift valve;

[0007] A butting sealing component for connecting and sealing the butted pipe is arranged on the butted pipe;

[0008] A pressurizing sealing component for connecting and sealing with the connection flange of the lift valve is also arranged on the butted pipe.

[0009] As a preferred technical solution of the utility model, the butting sealing component includes an external thread pipe communicated with the butted pipe and a pipe insertion groove arranged at the end of the butted pipe outside the external thread pipe;

[0010] Among them, an elastic sealing rubber ring is installed in the pipe insertion groove, and a sealing ring that fits the inner wall of the butt joint pipe is installed in the pipe insertion groove.

[0011] By adopting the above technical solution, the sealing effect of butt-joint connection with the connecting pipe is effectively achieved.

[0012] As a preferred technical solution of the present utility model, the pressurizing and sealing assembly includes a pressurizing and sealing member and an elastic support member;

[0013] Pressurizing and sealing member,

[0014] It includes an annular groove opened at the connection flange of the lifting valve, a flange plate connected to the other end of the butt joint pipe and butt-joint installed at the connection flange of the lifting valve, and a partition ring communicated with the inside of the butt joint pipe. A corrugated expansion pipe is communicated with the partition ring, the other end of the corrugated expansion pipe is communicated with an annular seat installed on the inner wall of the butt joint pipe, a boss cylinder is communicated at the center of the annular seat, and a rubber ring corresponding to the plug-in seal of the annular groove is installed on the side of the boss cylinder facing the lifting valve.

[0015] By adopting the above technical solution, while the air pressure in the pipeline increases, the sealing performance of the fit is improved.

[0016] As a preferred technical solution of the present utility model, the boss cylinder is a hollow frustum, the largest diameter surface of the boss cylinder faces the lifting valve, the outside of the boss cylinder is inclined at an angle of 30 degrees towards the center of the butt joint pipe and there is a gap between it and the inner wall of the corrugated expansion pipe.

[0017] As a preferred technical solution of the present utility model, the elastic support member includes a connection carrier plate installed in the butt joint pipe and above the boss cylinder, and an elastic telescopic rod is installed between the connection carrier plate and the butt joint pipe.

[0018] By adopting the above technical solution, under the action of air pressure, the pressurizing and sealing member is pushed to closely fit the connection part to improve the sealing effect.

[0019] As a preferred technical solution of the present utility model, the elastic telescopic rod is composed of a spring and two ends of the telescopic rod sleeved with each other. The telescopic rod is composed of two sleeves slidingly connected with each other, and the two ends of the two sleeves away from each other are respectively connected to the inner sides of both ends of the spring.

[0020] By adopting the above technical solution, the linear elastic extension and contraction of the elastic telescopic rod are realized.

[0021] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0022] The soot blower of the boiler with a connection sealing assembly, through the provided docking sealing assembly, while ensuring the sealing performance of the docking between the docking pipe and the connecting pipe, realizes the improvement of the sealing performance of the connection between the docking pipe and the lifting valve under the condition of high air flow pressure through the provided pressurization sealing assembly, avoiding connection air leakage. Brief Description of the Drawings

[0023] Figure 1 It is a view of the present utility model;

[0024] Figure 2 It is a sectional view of the external threaded pipe of the present utility model;

[0025] Figure 3 It is a partial sectional view of the present utility model;

[0026] Figure 4 It is the present utility model Figure 3 The sectional view of the partial structure in the present utility model.

[0027] In the figure: 1, body; 2, lifting valve; 3, soot blowing pipe; 4, docking pipe; 5, external threaded pipe; 6, pipe insertion groove; 7, elastic sealing rubber ring; 8, sealing ring; 9, annular groove; 10, flange; 11, partition ring; 12, corrugated expansion pipe; 13, annular ring seat; 14, boss cylinder; 15, rubber ring; 16, elastic telescopic rod; 17, connecting carrier plate. Detailed Description of the Preferred Embodiment

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0029] Please refer to Figure 1 , a soot blower of the boiler with a connection sealing assembly in this embodiment includes a body 1, a lifting valve 2, a soot blowing pipe 3 and a docking pipe 4.

[0030] The body 1 is the driving body structure of the soot blower in the prior art.

[0031] The lifting valve 2 is assembled on the body 1, and a soot blowing pipe 3 connected to the body 1 is communicated with the lifting valve 2, and a nozzle is communicated with the end of the soot blowing pipe 3.

[0032] Please refer to Figure 2 , in this embodiment, the docking pipe 4 is provided with a docking sealing assembly for connecting and sealing the docking pipe.

[0033] It should be noted that the docking and sealing assembly includes an external threaded pipe 5 connected to the docking pipe 4 and a pipe insertion groove 6 opened at the end of the docking pipe 4 outside the external threaded pipe 5.

[0034] The external threaded pipe 5 is provided with a threaded groove for threaded docking with the connected pipe.

[0035] Wherein, an elastic sealing rubber ring 7 is fitted and installed in the pipe insertion groove 6, and a sealing ring 8 that fits the inner wall of the docking pipe 4 is fitted and installed in the pipe insertion groove 6.

[0036] Please refer to Figures 3 to 4 , in this embodiment, the docking pipe 4 is further provided with a pressurization sealing assembly that is connected to the connection flange of the lifting valve 2 and realizes sealing.

[0037] It should be noted that the pressurization sealing assembly includes a pressurization seal and an elastic support;

[0038] Pressurization seal,

[0039] including an annular groove 9 opened at the connection flange of the lifting valve 2, a flange plate 10 connected to the other end of the docking pipe 4 and docked and installed with the connection flange of the lifting valve 2, and a partition ring 11 connected to the inside of the docking pipe 4. A corrugated telescopic pipe 12 is connected to the partition ring 11. The other end of the corrugated telescopic pipe 12 is connected to an annular seat 13 that is fixedly fitted to the inner wall of the docking pipe 4. A convex platform cylinder 14 is connected to the center of the annular seat 13. A rubber ring 15 that is inserted and sealed corresponding to the annular groove 9 is fitted and installed on the side of the convex platform cylinder 14 facing the lifting valve 2.

[0040] Both the partition ring 11 and the annular seat 13 are in the shape of a circular ring body.

[0041] The convex platform cylinder 14 is in the shape of a hollow frustum. The largest diameter surface of the convex platform cylinder 14 faces the lifting valve 2. The outside of the convex platform cylinder 14 is inclined at an angle of thirty degrees towards the center of the docking pipe 4 and there is a gap between it and the inner wall of the corrugated telescopic pipe 12, ensuring that there is a large space and contact area between the convex platform cylinder 14, the annular seat 13 and the corrugated telescopic pipe 12, and increasing the blocking area for the incoming air flow.

[0042] Elastic support,

[0043] including a connection carrier plate 17 installed and fixed inside the docking pipe 4 and above the convex platform cylinder 14, and an elastic telescopic rod 16 installed and fixed between the connection carrier plate 17 and the docking pipe 4.

[0044] The elastic telescopic rod 16 is composed of a spring and two telescopic rods sleeved with each other at both ends. The telescopic rod is composed of two sleeves slidably connected to each other. The two ends of the two sleeves away from each other are respectively connected to the inner sides of both ends of the spring.

[0045] When the flange 10 is in the connected and locked state with the connecting flange on the lifting valve 2, the rubber ring 15 is located in the annular groove 9, and the elastic telescopic rod 16 is in a compressed state but not in the maximum compressed state.

[0046] The working principle of the above embodiment is as follows:

[0047] During use, while the external threaded pipe 5 on the docking pipe 4 is threadedly connected to the butt-jointed pipe, as the connecting thread of the butt-jointed pipe is screwed into the pipe insertion groove 6, the elastic sealing rubber ring 7 in the pipe insertion groove 6 is closely attached and sealed to the end face of the butt-jointed pipe. At the same time, the provided sealing ring 8 is closely attached and sealed to the outside of the butt-jointed pipe, so that the elastic sealing rubber ring 7 and the sealing ring 8 are combined to seal the gap between the docking pipe 4 and the butt-jointed pipe, improving the connection sealing effect.

[0048] In addition, after the flange 10 and the connecting flange of the lifting valve 2 are connected and combined and fixed by fastening screws, at this time, the rubber ring 15 is located in the annular groove 9, and with the elastic telescopic action of the elastic telescopic rod 16, the rubber ring 15 on the boss cylinder 14 is pushed to be closely attached and sealed in the annular groove 9. While ensuring the docking sealing performance, when high-pressure air flows into the docking pipe 4 from the external threaded pipe 5, through the combined sealing form between the partition ring 11, the corrugated telescopic pipe 12, the annular ring seat 13 and the boss cylinder 14, and the boss body design of the boss cylinder 14, when the high-pressure air passes through the above combined structure, a part of the air directly discharges into the lifting valve 2 from the opening of the boss cylinder 14, and a part of the air is blocked by the above combined structure. At the same time, when the corrugated telescopic pipe 12, the annular ring seat 13 and the boss cylinder 14 are combined and affected by air pressure, the corrugated telescopic pipe 12 extends, and the elastic telescopic rod 16 extends synchronously, and at the same time, it pushes the boss cylinder 14 to move towards the side of the lifting valve 2 to apply pressure to the rubber ring 15. Thus, as the pressure increases, the sealing performance of the rubber ring 15 in the annular groove 9 and the lifting valve 2 is better, avoiding the reduction of the connection sealing effect affected by the pressure.

[0049] All the electrical components mentioned in the text are electrically connected to the main controller and the power supply. The main controller can be a conventional known device such as a computer for control, and the existing publicly disclosed power connection technology will not be elaborated in the text.

Claims

1. A boiler sootblower with a connection sealing assembly, comprising a body (1), a lifting valve (2), a sootblowing pipe (3) and a butt pipe (4); The machine body (1) is equipped with a lifting valve (2), and the lifting valve (2) is equipped with a sootblowing pipe (3) connected to the machine body (1); Features: The butt joint pipe (4) is provided with a butt joint sealing assembly for connecting and sealing the butt joint pipes; The butt joint pipe (4) is also provided with a pressurizing seal assembly for connecting with the connecting flange of the lift valve (2) and achieving sealing.

2. A boiler sootblower with a connection sealing assembly according to claim 1, characterized in that: The butt seal assembly comprises an externally threaded pipe (5) connected to the butt pipe (4) and a pipe insertion groove (6) provided at the end of the butt pipe (4) and located outside the externally threaded pipe (5); Wherein, an elastic sealing rubber ring (7) is installed in the pipe insertion groove (6), and a sealing ring (8) that fits the inner wall of the butt pipe (4) is installed in the pipe insertion groove (6).

3. A boiler sootblower with a connection sealing assembly according to claim 1, characterized in that: The pressurized seal assembly comprises a pressurized seal member and an elastic support member; Pressurized seals, It comprises an annular groove (9) provided at the connecting flange of the lifting valve (2), a flange plate (10) connected to the other end of the butt-jointed pipe (4) and connected to the connecting flange of the lifting valve (2), and a partition ring (11) connected to the inside of the butt-jointed pipe (4), the partition ring (11) being connected to a bellows expansion pipe (12), the other end of the bellows expansion pipe (12) being connected to an annular ring seat (13) installed on the inner wall of the butt-jointed pipe (4), the center of the annular ring seat (13) being connected to a boss tube (14), and a rubber ring (15) corresponding to the plug-in seal of the annular groove (9) being installed on the side of the boss tube (14) facing the lifting valve (2).

4. A boiler sootblower with a connection sealing assembly according to claim 3, characterized in that: The boss tube (14) is in the form of a hollow truncated cone, the maximum diameter surface of the boss tube (14) faces the lift valve (2), the outside of the boss tube (14) is inclined at an angle of thirty degrees toward the center of the butt joint tube (4), and there is a gap between the boss tube (14) and the inner wall of the bellows expansion tube (12).

5. A boiler sootblower with a connection sealing assembly according to claim 4, characterized in that: The elastic support member It comprises a connecting carrier plate (17) installed in the butt-jointing tube (4) and located above the boss tube (14), and an elastic telescopic rod (16) is installed between the connecting carrier plate (17) and the butt-jointing tube (4).

6. A boiler sootblower with a connection sealing assembly according to claim 5, characterized in that: The elastic telescopic rod (16) is composed of a spring and two ends of the telescopic rod sleeved together, and the telescopic rod is composed of two sleeves slidably connected to each other, and the ends of the two sleeves that are away from each other are respectively connected to the inner ends of the spring.

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