A boiler steam soot blowing regulating mechanism

Abstract

The utility model discloses a boiler steam soot blowing adjusting mechanism, including soot blowing mechanism and detection mechanism, soot blowing mechanism includes motor, and soot blowing pipe of solid connection with motor output shaft, and the plug of screwing with soot blowing pipe one end, two spray heads of respectively penetrating in soot blowing pipe top and bottom. Drive is motor output shaft with the rotation of soot blowing pipe and inserts high temperature pipe bundle, two spray heads cooperate, and the high temperature pipe bundle inner wall is preliminarily cleaned, and after completing, waits for high temperature pipe bundle internal steam to dissipate, then control soot blowing pipe and exit high temperature pipe bundle, at this moment, motor makes the lens on the cover move to the top of camera through the threaded rod, and camera shoots the inside situation of high temperature pipe bundle, then is given to the information processing of external PLC, and after external PLC locates residual coke block position, opens electromagnetic valve no.

Description

Technical Field

[0001] This utility model relates to the technical field of soot blowing adjustment mechanism, specifically a boiler steam soot blowing adjustment mechanism. Background Technology

[0002] Existing soot blowing devices typically operate as follows: steam generated by the boiler is delivered to a rotatable soot blowing pipe with several air outlets on its surface; during operation, the soot blowing pipe extends into the superheater tube bundle and, while rotating, sprays high-speed steam from the nozzles to remove ash and coke deposits from the inner wall of the tube bundle.

[0003] However, this method relies on widespread steam coverage for purging, which is easily affected by factors such as nozzle layout, steam pressure and coking morphology in actual operation, resulting in incomplete coking and affecting heat exchange efficiency. Utility Model Content

[0004] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0005] Therefore, the technical solution adopted by this utility model is as follows:

[0006] A boiler steam soot blowing regulating mechanism includes a soot blowing mechanism and a detection mechanism. The soot blowing mechanism includes a motor, a soot blowing pipe fixedly connected to the output shaft of the motor, a plug screwed to one end of the soot blowing pipe, two nozzles respectively penetrating the top and bottom of the soot blowing pipe, and two solenoid valves respectively installed on the two nozzles. The detection mechanism includes a camera embedded inside the plug, a cover attached to the top of the camera and inserted into the plug, a lens embedded in the cover, a threaded rod that rotates inside the plug, a motor fixed between the plug and the threaded rod, a nozzle penetrating the top of the soot blowing pipe, and a solenoid valve installed on the nozzle. The threaded rod transversely penetrates the cover.

[0007] By adopting the above technical solution, the soot blowing pipe driven by the output shaft of the motor is inserted into the high-temperature tube bundle. The two nozzles work together to perform preliminary cleaning of the inner wall of the high-temperature tube bundle. After completion, wait for the steam inside the high-temperature tube bundle to dissipate, and then control the soot blowing pipe to exit the high-temperature tube bundle. At this time, the motor moves the lens on the cover to the top of the camera through the threaded rod. The camera captures the situation inside the high-temperature tube bundle and then transmits the information to the external PLC for processing. After the external PLC locates the position of the residual coke, it opens the second solenoid valve, and then the nozzle sprays high-intensity steam to impact the residual coke. This secondary fixed-point supplementary blowing significantly improves the coke removal effect.

[0008] In a preferred embodiment, the present invention can be further configured such that: the soot blowing pipe is provided with an air supply mechanism, the air supply mechanism including a hollow plate movably sleeved on the other end of the soot blowing pipe, an air inlet pipe penetrating the top of the hollow plate, and three openings opened on the soot blowing pipe and communicating with the interior of the hollow plate.

[0009] In a preferred embodiment, the present invention can be further configured such that: the nozzle is located inside the nozzle head near the top of the soot blowing pipe, the two nozzle heads are vertically coaxial, and the interior of the nozzle head and the nozzle are both connected to the interior of the soot blowing pipe.

[0010] In a preferred embodiment, this utility model can be further configured as follows: two solenoid valves are connected in series, and both solenoid valves are electrically connected to an external PLC.

[0011] In a preferred embodiment, the present invention can be further configured such that: the plug has a cavity inside suitable for mounting a threaded rod and a motor, and the bottom of the cover slides into the cavity.

[0012] In a preferred embodiment, the present invention can be further configured such that a clamp is detachably connected between the air intake pipe and the motor body, and the clamp is made of metal material.

[0013] By adopting the above technical solution, the beneficial effects achieved by this utility model are as follows:

[0014] 1. In this utility model, the soot blowing pipe driven by the output shaft of the motor extends into the high-temperature tube bundle. Two nozzles cooperate to perform preliminary cleaning of the inner wall of the high-temperature tube bundle. After completion, wait for the steam inside the high-temperature tube bundle to dissipate, and then control the soot blowing pipe to exit the high-temperature tube bundle. At this time, the motor moves the lens on the cover to the top of the camera through the threaded rod. The camera captures the situation inside the high-temperature tube bundle and then transmits the information to the external PLC for processing. After the external PLC locates the position of the residual coke, it opens the second solenoid valve, and then the nozzle sprays high-intensity steam to impact the residual coke. This secondary fixed-point supplementary blowing significantly improves the coke removal effect.

[0015] 2. In this utility model, after the soot blowing pipe completes the initial removal of coke blocks, the first solenoid valve is closed, and then the external PLC opens the second solenoid valve, so that high-temperature steam can be blown out at a high intensity, ensuring the success rate of secondary removal of coke blocks, and also preventing the waste of high-temperature steam. Attached Figure Description

[0016] Figure 1 This is a front view of the overall structure of this utility model;

[0017] Figure 2 This is a perspective view of the overall structure of this utility model;

[0018] Figure 3This is a schematic diagram showing the cooperation relationship between the soot blowing mechanism and the air supply mechanism of this utility model;

[0019] Figure 4 This is a schematic diagram of the detection mechanism of this utility model;

[0020] Figure 5 This is a schematic diagram showing the installation positions of the nozzle and solenoid valve of this utility model.

[0021] Figure label:

[0022] 100. Soot blowing mechanism; 110. Motor; 120. Soot blowing pipe; 130. Plug; 140. Nozzle; 150. Solenoid valve 1;

[0023] 200. Gas supply mechanism; 210. Hollow plate; 220. Air inlet pipe; 230. Opening;

[0024] 300. Detection mechanism; 310. Camera; 320. Cover; 330. Lens; 340. Threaded rod; 350. Motor; 360. Nozzle; 370. Solenoid valve II;

[0025] 400. Compression clamp. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0027] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.

[0028] The following describes, with reference to the accompanying drawings, some embodiments of a boiler steam soot blowing regulating mechanism provided by this utility model.

[0029] Example 1:

[0030] Combination Figures 1-5 As shown, the present invention provides a boiler steam soot blowing regulating mechanism, including a soot blowing mechanism 100 and a detection mechanism 300. The soot blowing mechanism 100 includes a motor 110, a soot blowing pipe 120 fixedly connected to the output shaft of the motor 110, a plug 130 screwed to one end of the soot blowing pipe 120, two nozzles 140 respectively penetrating the top and bottom of the soot blowing pipe 120, and two solenoid valves 150 respectively installed on the two nozzles 140.

[0031] The detection mechanism 300 includes a camera 310 embedded inside the plug 130, a cover 320 attached to the top of the camera 310 and inserted into the plug 130, a lens 330 embedded in the cover 320, a threaded rod 340 rotatably embedded inside the plug 130, a motor 350 fixed between the plug 130 and the threaded rod 340, a nozzle 360 ​​penetrating the top of the soot blowing pipe 120, and a solenoid valve 370 installed on the nozzle 360. The threaded rod 340 laterally penetrates the cover 320.

[0032] Furthermore, the nozzle 360 ​​is located inside the nozzle 140 near the top of the soot blowing tube 120. The two nozzles 140 are vertically coaxial, and the interiors of both the nozzles 140 and the nozzle 360 ​​are connected to the interior of the soot blowing tube 120. The layout design of the two nozzles 140 can completely remove the coke from the inner wall of the high-temperature tube bundle when the soot blowing tube 120 rotates.

[0033] Furthermore, the plug 130 has a cavity inside suitable for mounting the threaded rod 340 and the motor 350, and the bottom of the cover 320 slides into the cavity. This structural design ensures that the cover 320 has the ability to slide left and right.

[0034] Furthermore, a clamp 400 is detachably connected between the air intake pipe 220 and the motor 110 body. The clamp 400 is made of metal material, and the clamp 400 can improve the installation firmness of the air intake pipe 220.

[0035] Example 2:

[0036] Combination Figures 1-3 As shown, based on Embodiment 1, the sootblowing pipe 120 is provided with an air supply mechanism 200. The air supply mechanism 200 includes a hollow plate 210 movably sleeved on the other end of the sootblowing pipe 120, an air inlet pipe 220 penetrating the top of the hollow plate 210, and three openings 230 opened on the sootblowing pipe 120 and communicating with the interior of the hollow plate 210. High-temperature steam from the boiler is injected into the hollow plate 210 through the air inlet pipe 220, and then enters the sootblowing pipe 120 through the three openings 230. This ensures that the sootblowing pipe 120 has a sufficient air supply and that it can rotate independently.

[0037] Example 3:

[0038] Combination Figures 1-5 As shown, in the above embodiment, two solenoid valves 150 are connected in series. Both solenoid valve 150 and solenoid valve 370 are electrically connected to an external PLC. This structural design improves the user experience of the device.

[0039] Working principle and usage process of this utility model:

[0040] When this device is put into actual use, the soot blowing pipe 120 first slowly extends into the high-temperature tube bundle. Then, the motor 110 drives the soot blowing pipe 120 to rotate at a constant speed, so that the high-temperature steam inside it is evenly impacted by the two nozzles 140 to complete the initial removal of coke blocks.

[0041] After the initial purging is completed, once the steam inside the high-temperature tube bundle dissipates and the field of vision becomes clear, the soot blowing tube 120 is slowly withdrawn. During the withdrawal process, the motor 350 drives the threaded rod 340 to rotate, causing the cover 320 to slide, so that the lens 330 moves directly above the camera 310. The camera 310 then acquires images of the inner wall of the high-temperature tube bundle and transmits the captured information to the external PLC (with built-in image processor). After analyzing the images, the external PLC accurately locates the position of the residual coke that needs to be cleaned a second time.

[0042] Next, the external PLC closes two solenoid valves 150 to stop the main steam injection, and at the same time opens solenoid valve 370. When the nozzle 360 ​​moves with the soot blowing pipe 120 to the target position, the system controls it to spray out a high-intensity impact airflow to specifically clean the residual coke. Through this detection and fixed-point supplementary blowing linkage mechanism, the coke removal effect is significantly improved.

[0043] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A boiler steam soot blowing regulating mechanism, characterized in that, include: The soot blowing mechanism (100) includes a motor (110), a soot blowing pipe (120) fixedly connected to the output shaft of the motor (110), a plug (130) screwed to one end of the soot blowing pipe (120), two nozzles (140) passing through the top and bottom of the soot blowing pipe (120) respectively, and two solenoid valves (150) respectively installed on the two nozzles (140); The detection mechanism (300) includes a camera (310) embedded inside the plug (130), a cover (320) attached to the top of the camera (310) and inserted into the plug (130), a lens (330) embedded in the cover (320), a threaded rod (340) embedded inside the plug (130), a motor (350) fixed between the plug (130) and the threaded rod (340), a nozzle (360) penetrating the top of the soot blowing pipe (120), and a second solenoid valve (370) installed on the nozzle (360). The threaded rod (340) penetrates laterally through the cover (320).

2. The boiler steam soot blowing regulating mechanism according to claim 1, characterized in that, The soot blowing pipe (120) is provided with an air supply mechanism (200), which includes a hollow plate (210) movably sleeved on the other end of the soot blowing pipe (120), an air inlet pipe (220) penetrating the top of the hollow plate (210), and three openings (230) opened on the soot blowing pipe (120) and communicating with the interior of the hollow plate (210).

3. The boiler steam soot blowing regulating mechanism according to claim 1, characterized in that, The nozzle (360) is located inside the nozzle (140) near the top of the soot blowing pipe (120). The two nozzles (140) are vertically coaxial, and the interiors of the nozzle (140) and the nozzle (360) are connected to the interior of the soot blowing pipe (120).

4. The boiler steam soot blowing regulating mechanism according to claim 1, characterized in that, Two solenoid valves (150) are connected in series, and both solenoid valves (150) and solenoid valve (370) are electrically connected to an external PLC.

5. A boiler steam soot blowing regulating mechanism according to claim 1, characterized in that, The plug (130) has a cavity inside suitable for mounting the threaded rod (340) and the motor (350), and the bottom of the cover (320) slides into the cavity.

6. A boiler steam soot blowing regulating mechanism according to claim 2, characterized in that, A clamp (400) is detachably connected between the air intake pipe (220) and the motor (110) body, and the clamp (400) is made of metal.

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