High-pressure water flushing device for air pre-heater of power plant boiler

Abstract

The utility model discloses a power plant boiler air pre-heater high-pressure water flushing device which comprises a base, moving wheels are arranged at the bottom of the base, and an electric cabinet, a high-pressure pump set and a water tank are arranged at the top of the base. A supporting frame is arranged at the top of the base, a gear motor is fixedly arranged at the top of the supporting frame, a fixing frame is arranged at the top of the supporting frame, and a hollow connector is rotationally erected on the upper portion of the fixing frame; a gear ring is arranged on the outer side of the connector, a nozzle is fixedly arranged on one side of the connector, and the other side of the connector is communicated with a connecting pipe through a rotating connector. A gear disc is coaxially and fixedly arranged at the power output end of the gear motor. The problem that time and labor are wasted due to the fact that the air pre-heater is manually cleaned regularly in an existing power plant is solved, and the air pre-heater cleaning device is simple in structure and easy to implement.

Description

Technical Field

[0001] The utility model belongs to the technical field of thermal power generation, and in particular relates to a high-pressure water flushing device for an air preheater of a boiler in a power plant. Background Art

[0002] An air preheater is a heating surface that preheats the flue gas in the flue at the rear of the boiler to a certain temperature through the internal heat sink. It is a device used to improve the heat exchange performance of the boiler and reduce energy consumption. Air preheaters are generally divided into three types: plate, rotary and tube. Ash is easily accumulated in the flue of the air preheater. When there is too much ash, the thermal conductivity and equipment performance will decrease. Power plants will clean the air preheaters regularly.

[0003] Existing power plants will regularly perform manual cleaning of air preheaters, but the workload of manual cleaning is large, and the cleaning efficiency is low and the cleaning effect is not good. For this reason, we propose a high-pressure water flushing equipment for power plant boiler air preheaters. Utility Model Content

[0004] The purpose of the utility model is to solve the deficiencies of the prior art and to propose a high-pressure water flushing device for a power plant boiler air preheater to solve the problem mentioned in the above background technology that the existing power plants will manually clean the air preheaters regularly, which is time-consuming and labor-intensive, and the device has a simple structure and is easy to implement.

[0005] A high-pressure water flushing device for an air preheater of a power plant boiler comprises a base, a bottom of the base is provided with moving wheels, and a top of the base is provided with an electric control box, a high-pressure pump group and a water tank;

[0006] A support frame is provided on the top of the base, a reduction motor is fixedly provided on the top of the support frame, and a fixed frame is provided on the top of the support frame, and an internal hollow connector is provided on the upper rotating frame of the fixed frame; a gear ring is provided on the outer side of the connector, a nozzle is fixedly provided on one side of the connector, and the other side of the connector is connected to a connecting pipe through a rotating joint; a gear plate is coaxially fixedly provided on the power output end of the reduction motor.

[0007] Preferably, the water tank and the high-pressure pump group are connected through a main water pipe, a water distribution box is fixedly installed at one end of the high-pressure pump group, a connecting pipe is fixedly connected to one end of the water distribution box, and a valve is installed on the connecting pipe.

[0008] Preferably, the rotating liquid outlet end of the rotary joint is coaxially fixedly inserted into the interior of the connector, and the fixed liquid inlet end of the rotary joint is fixedly connected to the connecting pipe, and the rotary joint enables the rotary joint and the nozzle to be connected in rotation.

[0009] Preferably, the liquid outlet end of the connector is coaxially buckled and fixed with an arc-shaped end cap having an arc-shaped inner cavity, a plurality of nozzles are evenly distributed and fixed on the arc-shaped end cap, and the inner cavity of the arc-shaped end cap is connected to the liquid discharge end of the rotary joint.

[0010] The advantages and technical effects of the utility model are:

[0011] The utility model discloses a high-pressure water flushing device for an air preheater of a power plant boiler. The device can be moved according to the needs of use through a base and moving wheels, thereby improving the flexibility of the device. The water in the water tank can be transported to the inside of the nozzle through a high-pressure pump group, and then the air preheater is sprayed for cleaning. The operation of the reduction motor can drive the connecting head and the nozzle to rotate. The rotating nozzle not only increases the density of the sprayed water volume, but also increases the range of the spray cleaning, thereby improving the working efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is the front view of the utility model;

[0013] Figure 2 It is a rear view of the utility model;

[0014] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0015] Figure 4 This is the internal structure diagram of the connector in the utility model;

[0016] In the figure: 1, base; 2, moving wheel; 3, electric control box; 4, high-pressure pump group; 5, water tank; 6, main water pipe; 7, water distribution box; 8, connecting pipe; 9, valve; 10, support frame; 11, reduction motor; 12, arc head; 13, connecting head; 14, gear ring; 15, nozzle; 16, rotating joint; 17, gear plate. 18, fixed frame. DETAILED DESCRIPTION

[0017] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0018] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0019] A high-pressure water flushing device for an air preheater of a power plant boiler comprises a base 1, a moving wheel 2 is arranged at the bottom of the base, and an electric control box 3, a high-pressure pump group 4 and a water tank 5 are arranged at the top of the base;

[0020] A support frame 10 is provided on the top of the base, a reduction motor 11 is fixedly provided on the top of the support frame, and a fixed frame 18 is provided on the top of the support frame, and an internal hollow connector 13 is provided on the upper rotating frame of the fixed frame; a gear ring 14 is provided on the outer side of the connector, a nozzle 15 is fixedly provided on one side of the connector, and the other side of the connector is connected to the connecting pipe 8 through a rotating joint 16; a gear plate 17 is coaxially fixedly provided at the power output end of the reduction motor.

[0021] Preferably, the water tank and the high-pressure pump group are connected via a main water pipe 6, a water separation box 7 is fixedly installed at one end of the high-pressure pump group, a connecting pipe is fixedly connected to one end of the water separation box, and a valve 9 is installed on the connecting pipe.

[0022] Preferably, the rotating liquid outlet end of the rotary joint is coaxially fixedly inserted into the interior of the connector, and the fixed liquid inlet end of the rotary joint is fixedly connected to the connecting pipe, and the rotary joint enables the rotary joint and the nozzle to be connected in rotation.

[0023] Preferably, the liquid outlet end of the connector is coaxially buckled with an arc-shaped end cap 12 having an arc-shaped inner cavity, a plurality of nozzles are evenly distributed circumferentially on the arc-shaped end cap, and the inner cavity of the arc-shaped end cap is connected to the liquid discharge end of the rotary joint.

[0024] In order to more clearly describe the specific implementation of the utility model, an embodiment is provided below:

[0025] The utility model discloses a high-pressure water flushing device for air preheater of a power plant boiler. During the flushing construction, the base carrying the flushing device is first pushed to the predetermined position, and then the high-pressure pump group in the water supply system is turned on, and the reduction motor is turned on. The pressurized water is passed into the rotary joint through the connecting pipe, and the rotary joint sequentially passes the pressurized water into the inner cavity of the connector and the inner cavity of the arc-shaped head, and finally sprays out through the nozzle. In this process, the fixed frame at the top of the support frame provides rotation support for the connector, and the gear plate coaxially fixed to the power output end of the reduction motor meshes with the gear ring fixed circumferentially on the outside of the connector, so as to realize that the reduction motor provides rotation power for the connector, and the arc-shaped head fixed with the nozzle will be driven to rotate synchronously during the rotation of the rotary joint, so as to realize the movable spray flushing of the nozzle; finally, the rotary joint adopts mature products in the existing technology, including but not limited to: Honey brand slip ring 360 high-speed rotary joint.

[0026] Finally, all the parts not fully described in the present invention adopt mature products and mature technical means in the prior art.

[0027] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in the embodiments or examples of the utility model.

[0028] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A high-pressure water flushing device for an air preheater of a power plant boiler, comprising a base (1), a movable wheel (2) being provided at the bottom of the base (1), and an electric control box (3), a high-pressure pump group (4) and a water tank (5) being provided at the top of the base (1); Features: A support frame (10) is provided on the top of the base (1), a reduction motor (11) is fixedly provided on the top of the support frame (10), and a fixing frame (18) is provided on the top of the support frame (10), and an internally hollow connector (13) is provided on the upper rotating frame of the fixing frame (18); a gear ring (14) is provided on the outer side of the connector (13), a nozzle (15) is fixedly provided on one side of the connector (13), and the other side of the connector (13) is connected to a connecting pipe (8) via a rotating joint (16); a gear plate (17) is coaxially fixedly provided at the power output end of the reduction motor (11).

2. A high-pressure water flushing device for air preheater of a power plant boiler according to claim 1, characterized in that: The water tank (5) and the high-pressure pump group (4) are connected via a main water pipe (6); a water separation box (7) is fixedly mounted on one end of the high-pressure pump group (4); a connecting pipe (8) is fixedly connected to one end of the water separation box (7); and a valve (9) is mounted on the connecting pipe (8).

3. The high-pressure water flushing device for air preheater of a power plant boiler according to claim 1, characterized in that: The rotating liquid outlet end of the rotating joint (16) is coaxially fixedly inserted into the interior of the connector (13), and the fixed liquid inlet end of the rotating joint (16) is fixedly connected to the connecting pipe (8), and the rotating joint (16) enables the rotating joint (16) and the nozzle (15) to be connected in rotation.

4. A high-pressure water flushing device for air preheater of a power plant boiler according to claim 3, characterized in that: The liquid outlet end of the connector (13) is coaxially buckled with an arc-shaped sealing head (12) having an arc-shaped inner cavity, a plurality of nozzles (15) are evenly distributed and fixed on the arc-shaped sealing head in the circumferential direction, and the inner cavity of the arc-shaped sealing head (12) is connected to the liquid discharge end of the rotary joint (16).

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