Air pre-heater anti-blocking device for preventing ammonium bisulfate deposition

Abstract

The utility model discloses an air pre-heater anti-blocking device for preventing ammonium bisulfate deposition, which relates to the technical field of flue gas treatment, and comprises a rotating table, a sliding rail, a sliding table and an injection mechanism, a driving motor and an annular graduator are arranged in the rotating table, the annular graduator is in driving connection with the driving motor, and the sliding table is arranged on the sliding table. The sliding rail is arranged on the annular graduator, the sliding table is arranged in the sliding rail in a sliding mode, the spraying mechanism is installed on the sliding table and comprises a rotating frame, a rotating joint and a high-pressure spraying head, the rotating frame is rotationally connected with the sliding table, the rotating joint is arranged at the rotation center of the rotating frame, and the high-pressure spraying head is arranged on the rotating joint. And the high-pressure spray head is mounted on the surface of the rotating frame and is communicated with the rotating joint. According to the automatic flushing device, the flushing range of the air pre-heater can be covered, and automatic flushing of the air pre-heater is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to flue gas treatment technical field, concretely is a kind of air preheater anti-blocking device for preventing ammonium bisulfate deposition. BACKGROUND

[0002] Air preheater is the heat-absorbing surface that the air before entering boiler is preheated to certain temperature by internal fin, for improving the heat exchange performance of boiler, reduce energy consumption.Usually, the air preheater of boiler used in power generation is located at the tail of boiler (here, flue gas and metal temperature are lowest), and the heat transfer element of air preheater usually appears serious ash deposition condition.This can be due to acid produced scale, or air preheater cold end is too close to water dew point, and the condition caused by dew point condensation.The transformation of selective catalytic reduction conversion system, sulfur dioxide in flue gas is converted to sulfur trioxide, and due to ammonia escape of SCR device, ammonium bisulfate is generated, after the decrease of flue gas temperature, ammonium bisulfate below 147 DEG C is liquid, and adhesion is extremely strong, the lower region of air preheater is lower than 147 DEG C, and liquid ammonium bisulfate further aggravates the ash deposition of air preheater.In addition, after the occurrence of ash deposition, the pressure difference of air side and flue gas side of air preheater is too large, air can leak to flue gas side from sealing gap, affect heat exchange effect, and sulfur trioxide in flue gas can combine with water vapor to form acid, and acid dew is easily formed at the bottom end of flue gas side under the condition of low temperature, and corrosion is formed to heat storage element.

[0003] The mode for solving this problem is mostly shutdown, flushing, blowing ash, after the shutdown of air preheater, it is lowered to room temperature, and then high-pressure water pipe and spray gun are used to flush air preheater, but this flushing mode needs manual movement of spray gun, and the flushing process needs continuous movement of staff, not only consumes manpower, increases the working tediousness of staff, and the flushing efficiency is low, and the flushing of specified position of air preheater cannot be quickly completed.

[0004] Therefore, how to provide a kind of air preheater anti-blocking device with simple structure, can realize automatic flushing, prevent ammonium bisulfate deposition, is the technical problem that present technical personnel in the field urgently need to solve. Utility model content

[0005] The utility model aims at providing a kind of air preheater anti-blocking device for preventing ammonium bisulfate deposition, the utility model occupies small area, by setting rotatable slide rail, the flushing area of air preheater can be effectively covered, the automatic flushing of specified position of air preheater is realized, and the flushing efficiency is improved.

[0006] The utility model provides a kind of for preventing ammonium bisulfate deposition air preheater anti -blocking device, including rotary workbench, slide rail, sliding platform and injection mechanism, rotary workbench is provided with driving motor and ring protractor, the ring protractor is driven connection with driving motor, the slide rail is set on ring protractor, the sliding platform is slidably arranged in slide rail, the injection mechanism is installed on sliding platform, the injection mechanism includes rotating frame, swivel joint and high pressure nozzle, the swivel joint is arranged in the rotary center of rotating frame, the rotating frame is rotatably connected with sliding platform, the high pressure nozzle is installed on rotating frame surface, and the high pressure nozzle is connected with swivel joint.

[0007] Further, one side of the slide rail is provided with a rack, and the sliding platform is correspondingly provided with a waterproof motor.

[0008] Further, the bottom end of the slide rail is provided with a drain hole.

[0009] Further, it further includes a water tank, a high-pressure water pump and a high-pressure pipeline, the high-pressure pipeline is located inside the slide rail, and the water tank is connected with the high-pressure water pump and the swivel joint in sequence through the high-pressure pipeline.

[0010] Further, the high-pressure nozzle is provided with two, and the two high-pressure nozzles are inclinedly arranged on the rotating frame.

[0011] The utility model has the advantages of simple structure, small space occupation, rotatable slide rail and sliding platform, driving motor driving slide rail rotation, spraying mechanism on sliding platform, effectively covering the washing area of air preheater, realizing automatic washing of air preheater, realizing quick washing of specified position, preventing air preheater from being blocked, setting high-pressure nozzle, obtaining wider washing range through self-rotation, and improving washing efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the main body structure schematic diagram of the utility model;

[0013] Figure 2 It is Figure 1 It is the local enlarged view of A in the middle;

[0014] Figure 3 It is the cross section view of the rotary workbench of the utility model.

[0015] 1. Rotary workbench; 2. Slide rail; 3. Sliding platform; 4. Driving motor; 5. Ring protractor; 6. Drain hole; 7. Rack; 8. Waterproof motor; 9. Gear; 10. Rotating frame; 11. Swivel joint; 12. High pressure nozzle. DETAILED DESCRIPTION

[0016] In order to achieve the above purposes and effects, the utility model adopts technical means and structure, and the characteristics and functions of the preferred embodiments of the utility model are described in detail in combination with the drawings.

[0017] In the description of the utility model, it should be pointed out that the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model; the terms "mounting", "connection" and "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated connection; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0018] Example 1

[0019] As Figures 1-3 shown, the embodiment discloses an air preheater anti-blocking device for preventing ammonium bisulfate deposition, which comprises a rotary workbench 1, a slide rail 2, a slide table 3, a spraying mechanism and a control system, and the rotary workbench 1 and the slide table 3 are electrically connected with the control system.

[0020] Specifically, the rotary workbench 1 is provided with a driving motor 4 and an annular protractor 5, the annular protractor 5 is drivingly connected with the driving motor 4, and the slide rail 2 is installed on the surface of the annular protractor 5; the control system in the embodiment can drive the slide rail 2 to rotate around the rotary workbench 1 through the annular protractor 5, and can accurately control the rotation angle, so that the parts with more dust can be highlighted.

[0021] As a preferred embodiment of the utility model, the rotary workbench 1 is provided with an annular auxiliary support frame 13, the auxiliary support frame 13 is rotatably connected with the slide rail 2, and the setting of the auxiliary support frame 13 can play a good supporting role, offset the back pressure generated by the high-pressure spray head 12 on the slide rail 2, and avoid the uneven stress of the slide rail 2 from being skewed.

[0022] The sliding table 3 is slidably arranged in the slide rail 2, the slide rail 2 is internally provided with a concave groove for placing a high-pressure water pipe and a waterproof cable, the bottom end of the slide rail 2 is provided with a drain hole 6 to avoid water accumulation in the slide rail 2. One side of the slide rail 2 is provided with a rack 7, and the same side of the sliding table 3 is correspondingly provided with a waterproof motor 8; the waterproof motor 8 is provided with a gear 9 at the output end, the gear 9 is engaged with the rack 7, and the rotation of the gear 9 is driven by the waterproof motor 8, so that the sliding table 3 can be moved in the slide rail 2, and the rotary slide rail 2 is matched to realize all-around coverage of the cleaning position of the rotary air preheater.

[0023] The spraying mechanism in the embodiment is mounted on the sliding table 3, and the spraying mechanism comprises a rotating frame 10, a rotating joint 11 and a high-pressure spray head 12; the high-pressure spray head 12 is arranged at the rotary center of the rotating frame 10; the rotating frame 10 is rotationally connected with the sliding table 3; the high-pressure spray head 12 is mounted on the surface of the rotating frame 10; the high-pressure spray head 12 is communicated with the rotating joint 11; the rotating joint 11 is arranged to uniformly distribute water flow to the high-pressure spray head 12 and avoid pipeline winding.

[0024] As a preferred embodiment of the utility model, the utility model also includes a water tank, a high-pressure water pump and a high-pressure pipeline; the water tank is communicated with the high-pressure water pump and the rotating joint 11 in sequence through the high-pressure pipeline; the high-pressure spray head 12 in the embodiment is provided with two; the two high-pressure spray heads 12 are both arranged on the rotating frame 10 in an inclined manner and are rotationally symmetrical about the rotating joint 11; the inclined arrangement of the high-pressure spray head 12 can make the cleaning frame rotate under the action of high-pressure water flow, thereby further improving the flushing range and cleaning efficiency.

[0025] The above is only a preferred embodiment of the utility model, and does not limit the technical range of the utility model, so any slight modification, equivalent change and modification of the above embodiment according to the technical essence of the utility model still belongs to the range of the technical scheme of the utility model.

Claims

1. An air preheater anti-clogging device for preventing ammonium bisulfate deposition, characterized by, The utility model relates to a spraying device for the production of glass bottles, including rotary table, slide rail, slide table and spray mechanism, rotary table is provided with drive motor and ring index in, ring index is driven with drive motor, slide rail sets up on ring index, slide table is slidably arranged in slide rail, spray mechanism is installed on slide table, spray mechanism includes rotary frame, rotary joint and high pressure spray head, rotary frame is rotatably connected with slide table, rotary joint sets up in rotary center of rotary frame, high pressure spray head is installed on rotary frame surface, high pressure spray head is linked with rotary joint.

2. An air preheater anti-clogging device for preventing ammonium bisulfate deposition as claimed in claim 1, characterized in that, One side of the slide rail is provided with a rack, the slide table is correspondingly provided with a waterproof motor, the output end of the waterproof motor is provided with a gear, and the gear is engaged with the rack.

3. An air preheater plugging prevention device for preventing ammonium bisulfate deposition according to claim 1, wherein The bottom end of the slide rail is provided with a drain hole.

4. An air preheater plugging prevention device for preventing ammonium bisulfate deposition according to claim 1, wherein It also includes a water tank, a high-pressure water pump and a high-pressure pipeline, the high-pressure pipeline is located inside the slide rail, the water tank is connected with the high-pressure water pump and the rotary joint in sequence through the high-pressure pipeline.

5. An air preheater plugging prevention device for preventing the deposition of ammonium bisulfate according to claim 1, wherein The high-pressure spray head is provided with two, two high-pressure spray heads are inclined on the rotary frame, the high-pressure spray head is rotationally symmetric about the rotary joint.

Images