Boiler fire observation hole decoking head

Abstract

The utility model relates to a decoking head for a fire observation hole of a boiler, belongs to the technical field of cleaning equipment, and solves the problems that accumulated coke in the fire observation hole of the existing boiler is difficult to clean, time-consuming and labor-consuming. A decoking head for a boiler fire observation hole comprises a decoking cylinder mounting rod, a decoking cylinder, a camera mounting hole, a lead hole and a fire detection camera. The decoking cylinder mounting rod and the decoking cylinder are fixedly connected and are coaxially arranged; the decoking cylinder comprises a decoking cylinder main body, decoking ribs and a coke scraping rolling ring; the decoking ribs are strip-shaped ribs arranged on the surface of the decoking cylinder main body; the coke scraping rolling ring is rotationally mounted on the surface of the decoking cylinder main body, and a plurality of arc-shaped coke scraping blades are arranged on the surface of the coke scraping rolling ring; a flame detection camera is fixedly mounted in a camera mounting hole in the end part of the decoking cylinder; and the lead hole is used as a cable lead-out hole of the flame detection camera. According to the utility model, the rapid decoking of the fire observation hole is realized, and the real-time observation of the decoking process can be realized.

Description

Technical Field

[0001] This utility model relates to the field of coke removal technology for boiler observation holes in power plants, and in particular to a coke removal head for boiler observation holes. Background Technology

[0002] The observation window of a power plant boiler is a window installed on the boiler wall to observe the combustion of the flame inside the boiler and the operating status of related equipment.

[0003] Combustion inside the boiler easily produces sintering flue gas, which can easily accumulate on the inner wall of the observation hole, thus limiting or even blocking the observation hole's field of vision. Currently, most power plant boiler observation holes are cleaned manually, but this method is not only time-consuming and labor-intensive, but also cannot clearly show the internal cleaning situation, requiring fire detection equipment for observation. The cleaning of the coke layer is incomplete and inefficient.

[0004] Therefore, a coke removal device is needed for use in the observation holes of power plant boilers. Utility Model Content

[0005] Based on the above analysis, the present invention aims to provide a slag removal head for boiler observation holes to solve the problems of difficult, time-consuming and labor-intensive slag removal from existing boiler observation holes.

[0006] The objective of this utility model is mainly achieved through the following technical solutions:

[0007] A boiler fire observation hole descaling head includes: a descaling cylinder mounting rod, a descaling cylinder, a camera mounting hole disposed at the end of the descaling cylinder, a lead wire hole disposed inside the descaling cylinder mounting rod and the descaling cylinder, and a fire detection camera installed inside the camera mounting hole;

[0008] The decoking cylinder mounting rod is fixedly connected to the decoking cylinder and the two are coaxially arranged.

[0009] The decoking cylinder includes: a decoking cylinder body, a decoking ridge, and a decoking scraping roller ring; the decoking ridge is a strip-shaped ridge provided on the surface of the decoking cylinder body; the decoking scraping roller ring is rotatably mounted on the surface of the decoking cylinder body, and the surface of the decoking roller ring is provided with multiple arc-shaped decoking blades.

[0010] A fire detection camera is fixedly installed in the camera mounting hole at the end of the decoking cylinder;

[0011] The lead hole is used as the cable lead-out hole for the fire detection camera.

[0012] Furthermore, the decoking ridge is a strip-shaped ridge extending along the axial direction of the decoking cylinder body; multiple decoking ridges are evenly spaced on the circumferential surface of the decoking cylinder body.

[0013] Furthermore, the surface of the coke scraping roller ring is provided with multiple arc-shaped coke scraping blades at equal intervals along its circumference; the arc-shaped coke scraping blades are S-shaped blades.

[0014] Furthermore, multiple arc-shaped grooves are formed on the surface of the coke removal cylinder body, with one end of each arc-shaped groove extending to the end face of the coke removal cylinder body near the coke removal cylinder mounting rod; multiple rolling balls are embedded in the inner wall of the coke scraping roller ring, and the rolling balls roll in cooperation with the arc-shaped grooves; when the rolling balls roll along the arc-shaped grooves, the coke scraping roller ring can roll circumferentially relative to the coke removal cylinder body.

[0015] Furthermore, the multiple arc-shaped grooves are evenly distributed along the surface of the decoking cylinder body.

[0016] Furthermore, the arc-shaped groove is a spiral groove.

[0017] Furthermore, at least two of the coke scraping rollers are provided on the surface of the coke removal cylinder body.

[0018] Furthermore, a limiting ring is welded and fixed to the end of the decoking cylinder body; the limiting ring is used to prevent the coke scraping roller from detaching from the decoking cylinder body.

[0019] Furthermore, the main body of the decoking cylinder is provided with a guide hole extending along its axial direction; multiple radially extending guide channels are opened on the annular side of the main body of the decoking cylinder; the guide channels are connected to the guide hole, thereby enabling the coke scraped off by the arc-shaped scraping blade to be discharged.

[0020] Furthermore, the end of the decoking cylinder mounting rod is connected to a linear drive mechanism or a decoking handle; when the end of the decoking cylinder mounting rod is connected to the linear drive mechanism, electric decoking can be achieved; when the end of the decoking cylinder mounting rod is equipped with a decoking handle, decoking can be achieved by the operator manually moving the decoking cylinder back and forth in the observation hole.

[0021] The technical solution of this utility model can achieve at least one of the following effects:

[0022] 1. The boiler observation hole desiccant head of this utility model has multiple desiccant protrusions that can divide the coke layer on the inner wall of the boiler observation hole into multiple coke strips; by setting multiple equally spaced desiccant protrusions, the coke layer on the inner wall of the boiler observation hole can be divided into multiple discontinuous local coke bodies, which facilitates subsequent desiccant removal work and improves desiccant removal efficiency.

[0023] 2. In the boiler observation hole desiccant head of this utility model, when the desiccant cylinder moves, the arc-shaped desiccant scraping blade will be laterally offset when scraping the coke layer due to the resistance of the coke layer. The lateral offset force will push the desiccant scraping roller to rotate circumferentially to scrape the coke layer in a circumferential direction, thereby improving the cleanliness of the observation hole after desiccant removal.

[0024] 3. In order to avoid the coke debris from clogging between the various parts of the coke removal cylinder, the scraped coke debris can enter the material outlet through the material guide channel and then be discharged from the material outlet to avoid coke removal jamming.

[0025] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages will become apparent from the description or be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained from the description and accompanying drawings, which are particularly pointed out. Attached Figure Description

[0026] The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0027] Figure 1 This is a schematic diagram of the structure of the boiler observation hole coke removal head of this utility model;

[0028] Figure 2 This is a cross-sectional view of the slag removal head of the boiler observation hole of this utility model;

[0029] Figure 3 This is a side view of the boiler observation hole desiccant head of this utility model;

[0030] Figure 4 This is a schematic diagram of the coke scraping roller ring of the coke removal cylinder of the boiler observation hole coke removal head of this utility model.

[0031] Figure 5 This is a front view of the scraping roller ring of the coke removal cylinder of the boiler observation hole coke removal head of this utility model.

[0032] Figure label:

[0033] 1-Decoking cylinder mounting rod; 2-Decoking cylinder; 3-Camera mounting hole; 4-Lead wire hole; 5-Flame detector camera;

[0034] 21-Coke removal cylinder body; 22-Coke removal protrusion; 23-Coke scraping roller ring; 24-Limiting ring; 25-Rolling ball; 26-Arc-shaped roller groove; 27-Arc-shaped coke scraping blade; 28-Guide channel; 29-Guide outlet hole. Detailed Implementation

[0035] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0036] Example 1

[0037] A specific embodiment of this utility model discloses a coke removal head for a boiler observation hole, such as... Figure 1 , Figure 2 As shown, it includes: a decoking cylinder mounting rod 1, a decoking cylinder 2, a camera mounting hole 3 at the end of the decoking cylinder 2, a lead wire hole 4 inside the decoking cylinder mounting rod 1 and the decoking cylinder 2, and a flame detection camera 5 installed inside the camera mounting hole 3.

[0038] Specifically, such as Figure 1 As shown, the decoking cylinder mounting rod 1 is fixedly connected to the decoking cylinder 2 and the two are coaxially arranged.

[0039] Specifically, a flame detection camera 5 is fixedly installed in the camera mounting hole 3 at the end of the decoking cylinder 2; when the decoking cylinder 2 extends into the boiler observation hole, it can perform decoking operation on the boiler observation hole; during decoking, the flame detection camera 5 can observe the decoking status of the boiler observation hole and determine whether decoking is completed.

[0040] Furthermore, the lead hole 4 is used as a cable lead-out hole for the fire detection camera 5.

[0041] The desiccant mounting rod 1 of the boiler observation hole desiccant head of this utility model can be connected to a linear drive mechanism or have a desiccant handle installed at its end. When the end of the desiccant mounting rod 1 is connected to the linear drive mechanism, it can be installed on the linear drive mechanism to realize electric automated desiccant removal. When the end of the desiccant mounting rod 1 is installed with a desiccant handle, the desiccant removal operation of the boiler observation hole can be realized by the operator manually operating the desiccant 2 to move back and forth in the observation hole.

[0042] In a preferred embodiment of this utility model, the linear drive mechanism includes a linear sliding mechanism composed of a linear slider and a sliding groove, and a drive device composed of a motor or an electric push rod; the decoking cylinder mounting rod 1 is fixedly connected to the linear slider, and the slider is driven to linear displacement by the motor or electric push rod; when the drive device is a motor, it can be used in conjunction with a gear and rack mechanism to realize the linear drive of the linear slider and the decoking cylinder mounting rod 1.

[0043] like Figure 1 , Figure 2As shown, the decoking cylinder 2 includes: a decoking cylinder body 21, a decoking ridge 22, and a decoking scraping roller ring 23; specifically, the decoking ridge 22 is a strip-shaped ridge provided on the surface of the decoking cylinder body 21; the decoking scraping roller ring 23 is rotatably mounted on the surface of the decoking cylinder body 21, and the surface of the decoking roller ring 23 is provided with multiple arc-shaped decoking blades 27.

[0044] Specifically, such as Figure 1 , Figure 2 As shown, the decoking ridge 22 is a strip-shaped ridge extending along the axial direction of the decoking cylinder body 21, and the decoking ridge 22 extends to one end of the decoking cylinder body 21.

[0045] Specifically, such as Figure 1 As shown, multiple slag-removing ridges 22 are evenly spaced on the circumferential surface of the slag-removing cylinder body 21. When the slag-removing cylinder 2 moves linearly, that is, when the slag-removing cylinder 2 enters the boiler observation hole for slag removal, the multiple slag-removing ridges 22 can divide the coke layer on the inner wall of the boiler observation hole into multiple coke strips. In this embodiment, by setting multiple evenly spaced slag-removing ridges 22, the coke layer on the inner wall of the boiler observation hole can be divided, causing it to be divided from a whole into multiple discontinuous local coke bodies, which facilitates subsequent slag removal work and improves slag removal efficiency.

[0046] Furthermore, such as Figure 4 , Figure 5 As shown, the surface of the coke scraping roller ring 23 is provided with multiple arc-shaped coke scraping blades 27 at equal intervals in the circumferential direction; preferably, the arc-shaped coke scraping blades 27 are S-shaped blades.

[0047] Furthermore, such as Figure 1 , Figure 2 As shown, at least two coke scraping rings 23 are provided on the surface of the coke removal cylinder body 21. Preferably, three coke scraping rings 23 are provided.

[0048] In one specific embodiment of this utility model, the spacing between the arc-shaped coke scraping blades 27 on the multiple coke scraping rollers 23 is unequal (not shown in the figure). Preferably, the arrangement density of the arc-shaped coke scraping blades 27 on the coke scraping rollers 23 that are closer to the decoking ridge 22 is smaller.

[0049] In one specific embodiment of this utility model, such as Figure 1 As shown, multiple arc-shaped grooves 26 are formed on the surface of the decoking cylinder body 21, and the arc-shaped grooves 26 are spiral grooves.

[0050] Preferably, the multiple arc-shaped grooves 26 are distributed at equal intervals along the surface of the decoking cylinder body 21.

[0051] Furthermore, one end of the arc-shaped groove 26 extends to the end face of the desiccant body 21 near the desiccant mounting rod 1. In this embodiment, the port of the arc-shaped groove 26 is set on the end face of the desiccant body 21, which facilitates the installation of the coke scraping ring 23 and allows the debris generated by coke scraping to be discharged from the port of the arc-shaped groove 26.

[0052] Furthermore, such as Figure 3 As shown, a plurality of rolling balls 25 are embedded in the inner wall surface of the coke scraping roller ring 23, and the rolling balls 25 roll in cooperation with the arc-shaped roller groove 26; when the rolling balls 25 roll along the arc-shaped roller groove 26, the coke scraping roller ring 23 can roll circumferentially relative to the coke removal cylinder body 21.

[0053] Furthermore, the number of rolling balls 25 on the coke scraper ring 23 is equal to the number of arc-shaped grooves 26.

[0054] Furthermore, a limiting ring 24 is welded and fixed to the end of the coke removal cylinder body 21; the limiting ring 24 is used to prevent the coke scraping roller ring 23 from detaching from the coke removal cylinder body 21.

[0055] During installation, the rolling ball 25 on the coke scraping roller ring 23 is aligned with the arc-shaped groove 26. The coke scraping roller ring 23 is pushed so that the rolling ball 25 rolls / slides along the arc-shaped groove 26, thereby fitting the coke scraping roller ring 23 onto the coke removal cylinder body 21. Multiple coke scraping roller rings 23 are installed in the same manner. After the multiple coke scraping roller rings 23 are installed, a fixed limiting ring 24 is welded to the end of the coke removal cylinder body 21 so that the coke scraping roller ring 23 can roll and move along the coke removal cylinder body 21 without detaching from the coke removal cylinder body 21.

[0056] In one specific embodiment of this utility model, such as Figure 2 , Figure 3 As shown, the main body 21 of the decoking cylinder is provided with a guide hole 29 extending along its axial direction; correspondingly, a plurality of radially extending guide channels 28 are opened on the annular side of the main body 21 of the decoking cylinder; the guide channels 28 are connected to the guide hole 29, thereby enabling the coke scraped off by the arc-shaped scraper blade 27 to be discharged.

[0057] In use, by pushing the coke removal cylinder 2 to move back and forth, the main body 21 of the coke removal cylinder can be moved back and forth in the boiler observation hole. When the main body 21 of the coke removal cylinder moves in the boiler observation hole, the coke layer can be scraped off by the coke removal protrusion 22 and the arc-shaped coke scraping blade 27. During the scraping, the coke removal protrusion 22 can divide the coke layer into multiple coke layers, and then the coke removal cylinder 2 continues to move. When the arc-shaped coke scraping blade 27 scrapes the coke layer, it will be laterally deflected by the resistance of the coke layer. The lateral deflection force will push the coke scraping roller ring 23 to rotate circumferentially to scrape off the coke layer in a circumferential direction. Finally, in order to avoid the coke debris from clogging between the various parts of the coke removal cylinder 2, the scraped coke debris can enter the guide outlet hole 29 through the guide channel 28 and then be discharged from the guide outlet hole 29 to avoid coke removal jamming.

[0058] Preferably, such as Figure 2 As shown, the connection between the material guiding channel 28 and the material guiding outlet 29 adopts an arc-shaped transition.

[0059] Furthermore, in another specific embodiment of this utility model, the material guide outlet 29 can also serve as an air inlet. Specifically, the end of the material guide outlet 29 is provided with an internal thread; the internal thread can be connected to a cold air blowing pipe; thereby, cold air can be blown into the gap between the material guide outlet 29, the material guide channel 28, and the coke removal cylinder 2 and the boiler observation hole, thereby cooling the boiler observation hole area and blowing the coke debris generated during coke removal into the boiler furnace cavity.

[0060] Preferably, the diameter of the limiting ring 24 is matched with the inner diameter of the boiler observation hole to prevent coke dust from being blown out in the opposite direction.

[0061] During implementation, when the push rod blows cold air into the material outlet hole 29 through the cold air blowing pipe, the cold air can be blown into the material channel 28 through the material outlet hole 29 and then blown out through the material channel 28. Since there are gaps between the decoking protrusions 22 and between the arc-shaped scraping blades 27, the coke dust accumulated between the decoking cylinder 2 and the boiler observation hole can be blown into the boiler furnace cavity through the gaps between the adjacent decoking protrusions 22 and the adjacent arc-shaped scraping blades 27.

[0062] In this embodiment, the fire detection camera 5 can be installed using existing products and configured with a display screen to show the internal status of the boiler; the use and connection of the camera and display screen, as well as the supply of cold air, are all things that can be realized by those skilled in the art, and will not be described in detail in this utility model.

[0063] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A slag removal head for a boiler observation port, characterized in that, include: The coking cylinder mounting rod (1), the coking cylinder (2), the camera mounting hole (3) provided at the end of the coking cylinder (2), the lead wire hole (4) provided inside the coking cylinder mounting rod (1) and the coking cylinder (2), and the fire detection camera (5) installed inside the camera mounting hole (3); The decoking cylinder mounting rod (1) is fixedly connected to the decoking cylinder (2) and the two are coaxially arranged; The decoking cylinder (2) includes: a decoking cylinder body (21), a decoking ridge (22), and a decoking scraping ring (23); the decoking ridge (22) is a strip-shaped ridge provided on the surface of the decoking cylinder body (21); the decoking scraping ring (23) is rotatably mounted on the surface of the decoking cylinder body (21), and the surface of the decoking scraping ring (23) is provided with multiple arc-shaped decoking blades (27); A fire detection camera (5) is fixedly installed in the camera mounting hole (3) at the end of the decoking cylinder (2); The lead hole (4) is used as the cable lead hole of the fire detector camera (5).

2. The boiler observation hole desiccant head according to claim 1, characterized in that, The decoking ridge (22) is a strip-shaped ridge extending along the axial direction of the decoking cylinder body (21); multiple decoking ridges (22) are evenly spaced on the circumferential surface of the decoking cylinder body (21).

3. The boiler observation hole desiccant head according to claim 1 or 2, characterized in that, The surface of the coke scraping roller ring (23) is provided with multiple arc-shaped coke scraping blades (27) at equal intervals in the circumferential direction; the arc-shaped coke scraping blades (27) are S-shaped blades.

4. The boiler observation hole desiccant head according to claim 3, characterized in that, Multiple arc-shaped grooves (26) are formed on the surface of the decoking cylinder body (21). One end of the arc-shaped groove (26) extends to the end face of the decoking cylinder body (21) near the decoking cylinder mounting rod (1). Multiple rolling balls (25) are embedded in the inner wall of the coking scraping ring (23). The rolling balls (25) roll in cooperation with the arc-shaped grooves (26). When the rolling balls (25) roll along the arc-shaped grooves (26), the coking scraping ring (23) can roll circumferentially relative to the decoking cylinder body (21).

5. The boiler observation hole desiccant head according to claim 4, characterized in that, The multiple arc-shaped grooves (26) are evenly distributed along the surface of the decoking cylinder body (21).

6. The boiler observation hole desiccant head according to claim 4 or 5, characterized in that, The arc-shaped groove (26) is a spiral groove.

7. The boiler observation hole desiccant head according to claim 1, characterized in that, At least two of the coke scraping rollers (23) are provided on the surface of the coke removal cylinder body (21).

8. The boiler observation hole desiccant head according to claim 1, characterized in that, A limiting ring (24) is welded to the end of the decoking cylinder body (21); the limiting ring (24) is used to prevent the coke scraping roller (23) from detaching from the decoking cylinder body (21).

9. The boiler observation hole desiccant head according to claim 1, characterized in that, The main body (21) of the decoking cylinder is provided with a guide hole (29) extending along its axial direction; multiple radially extending guide channels (28) are opened on the annular side of the main body (21); the guide channels (28) are connected to the guide hole (29), so as to guide the coke scraped off by the arc-shaped scraper blade (27).

10. The boiler observation hole desiccant head according to claim 1, characterized in that, The end of the decoking cylinder mounting rod (1) is connected to a linear drive mechanism or a decoking handle; when the end of the decoking cylinder mounting rod (1) is connected to the linear drive mechanism, electric decoking can be achieved; when the end of the decoking cylinder mounting rod (1) is equipped with a decoking handle, decoking can be achieved by the operator manually operating the decoking cylinder (2) to move back and forth in the observation hole.

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