Single-beam oscillating sootblower

Abstract

A single-beam oscillation type soot blower comprises a soot blower beam body (1), a running car (2) and a gun barrel (3), the running car (2) is installed on the soot blower beam body (1), the gun barrel (3) is installed in a filling chamber of the running car (2), the gun barrel (3) is swung by an oscillation swing box body on one side of the running car (2), a threading rod (4) is arranged at the bottom of a top plate of the soot blower beam body (1), and a spiral cable (5) is hung on the threading rod (4); the soot blower has the advantages that the spiral cable structure is used to replace a drag chain, the structure is simple, the total weight of the soot blower is reduced, the spray head is designed to be non-directly symmetrical arrangement, and the spray head is designed to be streamline type inside, so that the friction loss and pressure loss of steam flow to the inner wall of the spray head are reduced.

Description

Technical Field

[0001] This utility model relates to the field of soot blowers, specifically to a single-beam oscillating soot blower. Background Technology

[0002] Currently, in single-beam sootblowers, the oscillating box on the trolley converts the rotational motion transmitted from the motor into the oscillation of the gun barrel around its axis. During oscillation, the gun barrel simultaneously moves forward or backward to achieve soot blowing on a specific heating surface of the power plant boiler. Existing single-beam sootblower trolleys often use cable carriers for their power supply cables when moving forward or backward, which occupies a large space and requires additional cable carrier tracks. Conventional sootblower gun nozzles typically have two nozzles symmetrically arranged, usually perpendicular to the gun barrel at a 90° angle. This results in high resistance, pressure loss, and significant calorific value loss when steam exits from the nozzles. There is a lack of new nozzles that can effectively reduce soot blowing steam consumption while maintaining soot blowing effectiveness, thereby saving energy and improving boiler economic efficiency. Utility Model Content

[0003] The purpose of this invention is to address the above-mentioned shortcomings by providing a single-beam vibrating soot blower.

[0004] This utility model includes a sootblower beam, a trolley, and a gun barrel. The trolley is installed on the sootblower beam, and the gun barrel is installed in the filling chamber of the trolley. The gun barrel is driven to swing by the oscillating box on one side of the trolley. A wire rod is provided at the bottom of the top plate of the sootblower beam, and a spiral cable is suspended on the wire rod. The input end of the spiral cable is connected to an external power source, and the output end of the spiral cable is electrically connected to the motor of the trolley. A front end plate is provided at the head of the sootblower beam, and a pair of gun barrel support rollers are provided at the bottom of the front end plate. The gun barrel is located on the pair of gun barrel support rollers, and a sootblowing nozzle is provided at the head of the gun barrel.

[0005] The two ends of the wire guide rod are threaded. One end of the wire guide rod is fixed to the front end plate with a nut, and the other end of the wire guide rod is fixed to the rear end plate of the soot blower beam with a nut.

[0006] The sports car is equipped with a cable tray. One end of the cable tray has a cable fixing plate facing upwards, and the other end of the cable tray has a sports car fixing plate facing downwards. The output end of the spiral cable is installed on the cable fixing plate, and the output end of the spiral cable extends downwards to connect with the motor of the sports car. The sports car fixing plate is fixed to the sports car with bolts.

[0007] The soot blowing nozzle has a lower nozzle at the bottom of the head and an upper nozzle at the top of the middle. The head of the soot blowing nozzle has sloping sides, and the internal space of the soot blowing nozzle gradually decreases from the middle to the head.

[0008] The inner wall of the soot blowing nozzle located at the lower nozzle is provided with a flow guide step with a triangular cross section.

[0009] The inner wall of the blowing nozzle located at the upper nozzle is provided with a guide protrusion with an inverted trapezoidal cross section.

[0010] The top of the blowing nozzle is curved.

[0011] Both the lower and upper nozzles are frustum-shaped holes, with the outlet diameter being larger than the inlet diameter.

[0012] A first arc-shaped guide surface is provided on the top inlet end wall of the lower nozzle, and a second arc-shaped guide surface is provided on the bottom inlet end wall of the upper nozzle.

[0013] The advantages of this utility model are: it adopts a spiral cable structure instead of a drag chain, which is simple in structure and reduces the total weight of the soot blower. The nozzle is designed with a non-direct symmetrical arrangement and a streamlined design inside the nozzle, which reduces the friction loss and pressure loss of the steam flow on the inner wall of the nozzle, reduces the wear of the inner wall of the nozzle and improves the service life of the nozzle, and can also reduce the steam flow loss while ensuring the soot blowing pressure of the nozzle. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the soot blower of this utility model.

[0015] Figure 2 This is a structural schematic diagram of the soot blowing nozzle of this utility model. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0017] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0018] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0019] In the description of the embodiments of this invention, it should be noted that if terms such as "upper," "lower," "inner," or "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, they are only for the convenience of describing the invention 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 the invention. Furthermore, if terms such as "first" or "second" appear in the description of this invention, they are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0020] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" 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 the present invention based on the specific circumstances.

[0021] As shown in the attached drawings, this utility model includes a sootblower beam 1, a trolley 2, and a gun barrel 3. The trolley 2 is installed on the sootblower beam 1, and the gun barrel 3 is installed in the filling chamber of the trolley 2. The gun barrel 3 is driven to swing by the oscillating box on one side of the trolley 2. A wire rod 4 is provided at the bottom of the top plate of the sootblower beam 1. A spiral cable 5 is suspended on the wire rod 4. The input end of the spiral cable 5 is connected to an external power source, and the output end of the spiral cable 5 is electrically connected to the motor of the trolley 2. A front end plate 6 is provided at the head of the sootblower beam 1. A pair of gun barrel support rollers 7 are provided at the bottom of the front end plate 6. The gun barrel 3 is located on the pair of gun barrel support rollers 7. A sootblowing nozzle 8 is provided at the head of the gun barrel 3.

[0022] The two ends of the wire rod 4 are respectively provided with threads. One end of the wire rod 4 is fixed to the front end plate 6 by a nut, and the other end of the wire rod 4 is fixed to the rear end plate of the soot blower beam 1 by a nut.

[0023] The sports car 2 is equipped with a cable tray 9. One end of the cable tray 9 is provided with a cable fixing plate 10 facing upwards, and the other end of the cable tray 9 is provided with a sports car fixing plate 11 facing downwards. The output end of the spiral cable 5 is installed on the cable fixing plate 10. The output end of the spiral cable 5 extends downwards and is electrically connected to the motor of the sports car 2. The sports car fixing plate 11 is fixed to the sports car 2 by bolts.

[0024] The soot blowing nozzle 8 has a lower nozzle 12 below the head and an upper nozzle 13 above the middle part of the soot blowing nozzle 8. The two sides of the head of the soot blowing nozzle 8 are sloping, and the internal cavity space of the soot blowing nozzle 8 gradually decreases from the middle part to the head.

[0025] A triangular-section guide step 14 is provided on the inner wall of the soot blowing nozzle 8 located at the lower nozzle 12.

[0026] The inner wall of the soot blowing nozzle 8 located at the upper nozzle 13 is provided with a guide protrusion 15 with an inverted trapezoidal cross section.

[0027] The top of the blowing nozzle 8 is curved.

[0028] Both the lower nozzle 12 and the upper nozzle 13 are frustum-shaped holes, with the outlet diameter being larger than the inlet diameter.

[0029] The lower nozzle 12 has a first arc-shaped guide surface 16 on the top inlet end hole wall, and the upper nozzle 13 has a second arc-shaped guide surface 17 on the bottom inlet end hole wall.

[0030] Example 1: As shown in the attached document Figure 1 As shown, the gear on the trolley 2 meshes with the rack at the bottom of the sootblower beam 1. The motor drives the gear to rotate, and the trolley 2 moves back and forth along the rack. The gun barrel 3 is installed in the packing chamber of the trolley 2. Opening the valve at the tail of the sootblower beam 1 allows the sootblowing medium to be transported through the inner tube into the gun barrel 3, and then ejected by the sootblowing nozzle 8. During operation, the oscillating box drives the sootblowing nozzle 8 to oscillate around its axis via a bevel gear transmission mechanism, increasing the sootblowing area. When the trolley 2 moves forward, the spiral cable 5 is stretched by the cable support plate 9; when the trolley 2 moves backward, the spiral cable 5 retracts and returns to its original position. The cable support plate 9, while stretching the spiral cable 5, also supports it from below.

[0031] As attached Figure 2 As shown, the right side is the air inlet of the sootblowing nozzle 8. Gas enters in the direction of the arrow. The guide protrusion 15 protrudes downwards. After the airflow contacts the guide protrusion 15, it flows downwards. Part of the gas is ejected through the upper nozzle 13, and the remaining gas flows through the gap between the guide protrusion 15 and the guide step 14 to the lower nozzle 12 and is ejected. Because some gas is ejected through the upper nozzle 13, the gas pressure decreases. The head of the sootblowing nozzle 8 has inclined surfaces on both sides, which reduces the gas delivery space and increases the gas pressure, making the gas flow rates ejected from the lower nozzle 12 and the upper nozzle 13 the same. The cooperation between the guide protrusion 15 and the guide step 14 makes the inner wall of the sootblowing nozzle 8 have a streamlined design.

Claims

1. A single-beam oscillating sootblower, comprising a sootblower beam (1), a trolley (2), and a gun barrel (3), wherein the trolley (2) is mounted on the sootblower beam (1), and the gun barrel (3) is mounted in the packing chamber of the trolley (2), and the gun barrel (3) is oscillating via an oscillating box on one side of the trolley (2), characterized in that, A wire rod (4) is provided at the bottom of the top plate of the soot blower beam (1). A spiral cable (5) is suspended on the wire rod (4). The input end of the spiral cable (5) is connected to an external power source, and the output end of the spiral cable (5) is connected to the motor of the trolley (2). A front end plate (6) is provided at the head of the soot blower beam (1). A pair of barrel rollers (7) are provided at the bottom of the front end plate (6). The barrel (3) is located on the pair of barrel rollers (7). A soot blowing nozzle (8) is provided at the head of the barrel (3).

2. The single-beam vibrating soot blower according to claim 1, characterized in that, The two ends of the wire rod (4) are respectively provided with threads. One end of the wire rod (4) is fixed to the front end plate (6) by a nut, and the other end of the wire rod (4) is fixed to the rear end plate of the soot blower beam (1) by a nut.

3. A single-beam vibrating soot blower according to claim 2, characterized in that, The sports car (2) is provided with a cable tray (9). One end of the cable tray (9) is provided with a cable fixing plate (10) facing upwards, and the other end of the cable tray (9) is provided with a sports car fixing plate (11) facing downwards. The output end of the spiral cable (5) is installed on the cable fixing plate (10). The output end of the spiral cable (5) extends downwards and is electrically connected to the motor of the sports car (2). The sports car fixing plate (11) is fixed to the sports car (2) by bolts.

4. A single-beam vibrating soot blower according to claim 1, characterized in that, The soot blowing nozzle (8) has a lower nozzle (12) below the head and an upper nozzle (13) above the middle part of the soot blowing nozzle (8). The two sides of the head of the soot blowing nozzle (8) are inclined, and the internal cavity space from the middle part to the head of the soot blowing nozzle (8) gradually shrinks.

5. A single-beam vibrating soot blower according to claim 4, characterized in that, A triangular-section guide step (14) is provided on the inner wall of the soot blowing nozzle (8) located at the lower nozzle (12).

6. A single-beam vibrating soot blower according to claim 5, characterized in that, The inner wall of the blowing nozzle (8) located at the upper nozzle (13) is provided with a guide protrusion (15) with an inverted trapezoidal cross section.

7. A single-beam vibrating soot blower according to claim 6, characterized in that, The head of the blowing nozzle (8) is arc-shaped.

8. A single-beam vibrating soot blower according to claim 7, characterized in that, Both the lower nozzle (12) and the upper nozzle (13) are frustum-shaped holes, with the outlet diameter being larger than the inlet diameter.

9. A single-beam vibrating soot blower according to claim 8, characterized in that, The top inlet end wall of the lower nozzle (12) is provided with a first arc-shaped guide surface (16), and the bottom inlet end wall of the upper nozzle (13) is provided with a second arc-shaped guide surface (17).

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