Turbine boiler observation device

Abstract

The invention discloses a steam turbine boiler observation device, which relates to the technical field of steam turbine boilers and comprises an observation pipe, and a front pipe and a cleaning frame are respectively fixed at two ends of the observation pipe. Through cooperation of the cleaning structure, the round head plug pin, the first auxiliary block and the second auxiliary block, the driving structure drives the scraping plate to conduct tight cleaning in the cleaning frame along the surface of the observation mirror, after cleaning is completed, the scraping plate is guided by the second auxiliary block to be automatically separated from the observation mirror through switching of the round head plug pin between round head insertion grooves, excessive cleaning is prevented, and the service life of the observation mirror is prolonged. Afterwards, the scraping plate moves to the position of the first auxiliary block along with the movable rod and restores to the initial state for next cleaning, so that it is guaranteed that the scraping plate evenly pushes impurities on the surface of the observation mirror to one direction, diffusion of dirt on the surface is reduced, the cleaned surface is cleaner and tidier, and the service life of the observation mirror is prolonged. And the friction frequency between the scraping plate and the surface of the observation mirror is reduced, so that the risk of surface scratch and abrasion is reduced, and the service life of the observation mirror is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of steam turbine boilers, in particular to a steam turbine boiler observation device. Background Art

[0002] In the continuous operation of steam turbine boilers, real-time monitoring of the internal status of the boilers plays a pivotal role. Traditional steam turbine boiler observation devices mostly rely on fixed observation mirrors to observe the internal status of the boilers. However, after long-term use, the surfaces of these observation mirrors are prone to accumulation of dust, dirt and other impurities, which greatly reduces the clarity of observation. In serious cases, it may even cause misjudgment of observation, posing a hidden danger to the safe operation of the boiler.

[0003] In order to meet this challenge, observation devices equipped with cleaning structures have emerged in the prior art. These devices either use air blowing or mechanically drive scrapers to clean the surface of the observation mirror. However, the air blowing cleaning method is often inadequate and difficult to completely remove impurities; and although the mechanical scraper cleaning method can effectively remove impurities, the scraping of the scraper back and forth may cause scratches on the surface of the observation mirror, affecting its light transmittance and service life.

[0004] Based on this, a steam turbine boiler observation device is now provided, which can eliminate the disadvantages of the existing devices. Summary of the invention

[0005] The object of the present invention is to provide a steam turbine boiler observation device to solve the problems in the background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A steam turbine boiler observation device comprises an observation tube, wherein a front tube and a cleaning frame are respectively fixed at both ends of the observation tube, a rear tube is fixed at the other end of the cleaning frame, a camera is installed at the other end of the rear tube, an observation mirror is installed at the connection between the cleaning frame and the rear tube, and a cleaning structure for cleaning the surface of the observation mirror is installed inside the cleaning frame, a fixing plate is fixed to the outer wall of the cleaning frame, and a driving structure for driving the cleaning structure to operate is installed on the fixing plate.

[0008] Preferably, the driving structure includes a motor mounted on a fixed plate, the output end of the motor extends to the other side of the fixed plate and is fixedly connected to one end of a connecting plate, the other end of the connecting plate is rotatably connected to a movable rod, and the end of the movable rod away from the connecting plate extends to the interior of the cleaning frame and is connected to the cleaning structure.

[0009] Preferably, the cleaning structure includes a movable block arranged inside the cleaning frame, one end of the movable block is fixed to the movable rod, a movable groove and a spring groove are opened inside the movable block, a built-in block slides inside the movable groove, one end of the built-in block close to the observation mirror is fixed to the scraper through a plurality of fixed rods, and the plurality of fixed rods slide with the movable block.

[0010] Preferably, a movable opening is provided at the upper end of the movable block, the movable opening and the movable groove are communicated with each other, the inner wall of the movable opening is slidably connected to the outer wall of the auxiliary rod, the auxiliary rod is fixed to the upper end of the built-in block, a fixing groove is provided on the side of the built-in block close to the spring groove, the inner wall of the spring groove is fixedly connected to a round head latch through a reset spring, a round head slot one and a round head slot two are symmetrically provided in the fixing groove, the round head slot one and the round head slot two are adapted to the round head latch, an auxiliary block one and an auxiliary block two are fixed at the top of the cleaning frame, the auxiliary block one and the auxiliary block two are symmetrically provided with notches, the notches are in opposite directions, and an arc guide line is provided at the notch position, the auxiliary rod slides with the auxiliary block one and the auxiliary block two.

[0011] Preferably, a plurality of rollers are installed at the bottom of the movable block.

[0012] Preferably, a plate frame is fixed to the outer wall of the observation tube on one side close to the front tube, the observation tube and the plate frame are internally connected, a protective plate is slidably provided inside the observation tube and the plate frame, one end of the protective plate close to the plate frame is fixedly connected to a piston plate through a piston rod, the piston rod slides with the plate frame, the piston plate is slidably installed inside the air cylinder, the air cylinder is installed at the end of the plate frame away from the observation tube, and two one-way air inlet valves and two one-way air outlet valves are installed on the air cylinder.

[0013] Preferably, a one-way air outlet valve three is installed on the side wall of one end of the air cylinder close to the plate frame, the one-way air outlet valve three is connected to a one-way air inlet valve one through an air pipe, the one-way air inlet valve one is installed on an observation tube, and a one-way air outlet valve one is installed on the other side of the observation tube.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention cooperates with the cleaning structure and the round-headed pin as well as the auxiliary blocks 1 and 2, and the driving structure drives the scraper to clean closely along the surface of the observation mirror in the cleaning frame. After the cleaning is completed, the scraper is guided by the auxiliary block 2 and automatically detaches from the observation mirror through the switching of the round-headed pin between the round-headed slots, thereby preventing excessive cleaning and avoiding damage to the mirror surface. Subsequently, the scraper moves to the position of the auxiliary block 1 with the movable rod and restores the initial state to prepare for the next cleaning, thereby ensuring that the scraper pushes the impurities on the surface of the observation mirror evenly in one direction, reducing the diffusion of dirt on the surface, making the cleaned surface cleaner and tidier, and reducing the number of frictions between the scraper and the surface of the observation mirror, thereby reducing the risk of surface scratches and wear and extending the service life of the observation mirror.

[0016] 2. The present invention cooperates with a protective plate and a plurality of one-way valves. When the camera stops working, cold air is filled into the two-way air cylinder through the one-way air inlet valve to push the piston plate forward. The piston plate drives the protective plate to slide through the piston rod to completely close the opening of the observation tube. After closing, the one-way air outlet valve three is connected to the one-way air inlet valve one through the air pipe, so that cold air flows into the observation tube for cooling, while the hot air is discharged to the outside through the one-way air outlet valve one, thereby not only achieving the cooling of the observation tube, but also preventing the cold air from flowing into the steam turbine boiler through the observation tube, thereby causing adverse effects on the inside of the steam turbine boiler. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention.

[0018] Figure 2 It is a structural schematic diagram of the side position of the present invention.

[0019] Figure 3 It is a schematic diagram of the structure of the protective plate, piston plate and air pipe of the present invention.

[0020] Figure 4 For the present invention Figure 2 Structural cross-section diagram at position A-A in the figure.

[0021] Figure 5 It is a structural schematic diagram of the position of the observation mirror of the present invention.

[0022] Figure 6 It is a structural schematic diagram of the positions of auxiliary block one and auxiliary block two of the present invention.

[0023] Figure 7 It is a structural cross-sectional view of the movable block of the present invention.

[0024] Figure 8 It is a structural schematic diagram of the built-in block of the present invention.

[0025] Notes on the reference numerals: 1. observation tube; 11. plate frame; 12. front tube; 13. one-way air inlet valve 1; 14. one-way air outlet valve 1; 21. air cylinder; 22. one-way air inlet valve 2; 23. one-way air outlet valve 2; 24. one-way air outlet valve 3; 25. air pipe; 26. piston plate; 27. piston rod; 28. protective plate; 3. cleaning frame; 31. fixing plate; 4. camera; 41. rear tube; 42. observation mirror; 43. auxiliary block 1; 44. auxiliary block 2; 5 1. Driving structure; 511. Motor; 512. Connecting plate; 513. Movable rod; 52. Cleaning structure; 521. Movable block; 5211. Roller; 522. Movable slot; 523. Movable opening; 524. Spring slot; 525. Reset spring; 526. Round head latch; 527. Built-in block; 5271. Fixed slot; 5272. Round head slot one; 5273. Round head slot two; 5274. Auxiliary rod; 528. Fixed rod; 529. Scraper. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0027] In one embodiment, Figure 1-Figure 8 As shown, a steam turbine boiler observation device includes an observation tube 1, wherein a front tube 12 and a cleaning frame 3 are fixed at both ends of the observation tube 1, a rear tube 41 is fixed at the other end of the cleaning frame 3, a camera 4 is installed at the other end of the rear tube 41, an observation mirror 42 is installed at the connection between the cleaning frame 3 and the rear tube 41, and a cleaning structure 52 for cleaning the surface of the observation mirror 42 is installed inside the cleaning frame 3, a fixing plate 31 is fixed to the outer wall of the cleaning frame 3, and a driving structure 51 for driving the cleaning structure 52 to operate is installed on the fixing plate 31.

[0028] In this embodiment, when it is necessary to observe the internal situation of the steam turbine boiler, the camera 4 is first started. The camera 4 captures the real-time picture inside the steam turbine boiler through the rear tube 41 and the observation mirror 42, and the observed picture is transmitted to the monitoring center or the display screen through the transmission system of the camera 4 (such as a cable or a wireless signal) for viewing by the operation and maintenance personnel.

[0029] During long-term observation, dust, dirt or other impurities may accumulate on the surface of the observation mirror 42, affecting the clarity of observation. At this time, the operation and maintenance personnel can start the cleaning structure 52 by controlling the driving structure 51. The cleaning structure 52 cleans the surface of the observation mirror 42 under the drive of the driving structure 51 to remove the accumulated impurities. After the cleaning is completed, the driving structure 51 stops running, the cleaning structure 52 returns to the initial position, and the camera 4 continues to capture the real-time picture inside the steam turbine boiler.

[0030] In an optional embodiment, the driving structure 51 includes a motor 511 installed on the fixed plate 31, and the output end of the motor 511 extends to the other side of the fixed plate 31 and is fixedly connected to one end of the connecting plate 512. The other end of the connecting plate 512 is rotatably connected to a movable rod 513. The movable rod 513 extends from one end of the connecting plate 512 to the interior of the cleaning frame 3 and is connected to the cleaning structure 52. The movable rod 513 slides with the cleaning frame 3.

[0031] It should be noted that when the observation mirror 42 needs to be cleaned, the motor 511 is started and rotated. The motor 511 drives the connecting plate 512 to rotate, and since the connecting plate 512 is rotatably connected to the movable rod 513, and the movable rod 513 slides with the cleaning frame 3, the movable rod 513 is pulled to reciprocate, thereby realizing the cleaning structure 52 to clean the surface of the observation mirror 42.

[0032] In an optional embodiment, the cleaning structure 52 includes a movable block 521 arranged inside the cleaning frame 3, one end of the movable block 521 is fixed to the movable rod 513, a movable groove 522 and a spring groove 524 are opened inside the movable block 521, a built-in block 527 slides inside the movable groove 522, and one end of the built-in block 527 close to the observation mirror 42 is fixed to the scraper 529 through a plurality of fixed rods 528, and the plurality of fixed rods 528 slide with the movable block 521.

[0033] Furthermore, a movable opening 523 is provided at the upper end of the movable block 521, and the movable opening 523 and the movable groove 522 are connected. The inner wall of the movable opening 523 is slidably connected to the outer wall of the auxiliary rod 5274, and the auxiliary rod 5274 is fixed to the upper end of the built-in block 527. A fixed groove 5271 is provided on one side of the built-in block 527 close to the spring groove 524. The inner wall of the spring groove 524 is fixedly connected to the round head latch 526 through a return spring 525. A round head slot 1 5272 and a round head slot 2 5273 are symmetrically provided in 71, and the round head slot 1 5272 and the round head slot 2 5273 are adapted to the round head pin 526. An auxiliary block 1 43 and an auxiliary block 2 44 are fixed on the top of the cleaning frame 3, and the auxiliary block 1 43 and the auxiliary block 2 44 are symmetrically provided with notches, and the directions of the notches are opposite to each other, and arc guide lines are arranged at the notch positions, and the auxiliary rod 5274 slides with the auxiliary block 1 43 and the auxiliary block 2 44.

[0034] It should be noted that, in the initial state, the round head pin 526 is inserted into the round head slot 5272, and the built-in block 527 (and the scraper 529) are in the initial position of cleaning the observation mirror 42.

[0035] When the observation mirror 42 needs to be cleaned, the motor 511 starts and drives the movable rod 513 to reciprocate, thereby driving the movable block 521 and the built-in block 527 to move in the cleaning frame 3. The built-in block 527 drives the scraper 529 to closely fit the surface of the observation mirror 42 for cleaning through the fixed rod 528.

[0036] After cleaning the surface of the observation mirror 42 once, the movable block 521 continues to move to the position of the auxiliary block 2 44. At this time, under the action of the guide line of the slot of the auxiliary block 2 44, the auxiliary rod 5274 slides in the movable opening 523, driving the built-in block 527 to slide in the movable slot 522. In this process, the round head pin 526 is pulled out from the round head slot 1 5272 and then inserted into the round head slot 2 5273, realizing the switching of the position of the built-in block 527.

[0037] During the sliding process of the built-in block 527, the scraper 529 is also pulled by the fixed rod 528, so that the scraper 529 is separated from the surface of the observation mirror 42. In this way, in the subsequent cleaning process, the scraper 529 will not scrape the surface of the observation mirror 42 that has been cleaned again, thereby avoiding unnecessary wear and accumulation of impurities.

[0038] When the movable block 521 continues to move to the auxiliary block 1 43 position, the cleaning structure 52 returns to the initial state.

[0039] In an optional embodiment, a plurality of rollers 5211 are installed at the bottom of the movable block 521 .

[0040] It should be noted that, by installing a plurality of rollers 5211 at the bottom of the movable block 521 , the friction between the bottom of the movable block 521 and the bottom of the cleaning frame 3 is reduced.

[0041] In an optional embodiment, a plate frame 11 is fixed to the outer wall of the observation tube 1 on one side close to the front tube 12, and the observation tube 1 and the plate frame 11 are internally connected. A protective plate 28 is slidingly provided inside the observation tube 1 and the plate frame 11. The end of the protective plate 28 close to the plate frame 11 is fixedly connected to a piston plate 26 through a piston rod 27. The piston rod 27 slides with the plate frame 11, and the piston plate 26 is slidably installed inside the air cylinder 21. The air cylinder 21 is installed at the end of the plate frame 11 away from the observation tube 1, and a one-way air inlet valve 22 and a one-way air outlet valve 23 are installed on the air cylinder 21.

[0042] It should be noted that when the camera 4 stops observing or shooting, cold air enters the cylinder 21 through the one-way air inlet valve 22, pushing the piston plate 26 forward. The movement of the piston plate 26 drives the protective plate 28 to slide inside the observation tube 1 and the plate frame 11 through the piston rod 27 until the opening of the observation tube 1 is completely closed.

[0043] When the camera 4 needs to observe or take pictures, the one-way air outlet valve 23 releases the air pressure inside the air cylinder 21 to the external environment, and the movement of the piston plate 26 drives the protective plate 28 to slide back to its original position through the piston rod 27, opening the opening of the observation tube 1.

[0044] In an optional embodiment, a one-way air outlet valve 24 is installed on the side wall of one end of the air cylinder 21 close to the plate frame 11, and the one-way air outlet valve 24 is connected to the one-way air inlet valve 13 through the air pipe 25. The one-way air inlet valve 13 is installed on the observation tube 1, and a one-way air outlet valve 14 is installed on the other side of the observation tube 1.

[0045] It should be noted that the one-way air outlet valve three 24 is connected to the one-way air inlet valve one 13 through the air pipe 25. When the opening of the observation tube 1 is completely closed, cold air enters the observation tube 1 through the one-way air outlet valve three 24, the air pipe 25, and the one-way air inlet valve one 13 to cool the observation tube 1, and the one-way air outlet valve one 14 discharges the air inside the observation tube 1 to the external environment.

[0046] The above embodiment discloses a steam turbine boiler observation device, wherein the camera 4 is started to capture real-time images inside the steam turbine boiler through the rear tube 41 and the observation mirror 42, and transmits these images to the monitoring center or the display screen for operation and maintenance personnel to view.

[0047] After a long period of observation, if dust or dirt accumulates on the surface of the observation mirror 42, the operation and maintenance personnel start the cleaning structure 52 by controlling the driving structure 51 (such as the motor 511).

[0048] The motor 511 drives the movable rod 513 to reciprocate, driving the movable block 521 and the built-in block 527 (and the scraper 529) to move in the cleaning frame 3. The scraper 529 fits tightly against the surface of the observation mirror 42 for cleaning. After cleaning once, the movable block 521 continues to move to the position of the auxiliary block 44. Under the action of the notch guide line of the auxiliary block 44, the auxiliary rod 5274 drives the built-in block 527 to slide, and the round head pin 526 is pulled out from the round head slot 1 5272 and inserted into the round head slot 2 5273 to switch the position of the built-in block 527. At this time, the scraper 529 is disengaged from the surface of the observation mirror 42 to avoid excessive cleaning. When the movable block 521 continues to move to the position of the auxiliary block 43, the cleaning structure 52 returns to the initial state and prepares for the next cleaning.

[0049] When the camera 4 stops observing or shooting, cold air is charged into the air cylinder 21 through the one-way air inlet valve 22, pushing the piston plate 26 to move forward. The piston plate 26 drives the protective plate 28 to slide through the piston rod 27, completely closing the opening of the observation tube 1.

[0050] After the opening of the observation tube 1 is closed, the one-way air outlet valve 3 24 is connected to the one-way air inlet valve 1 13 through the air pipe 25, and cold air enters the inside of the observation tube 1 for cooling. The one-way air outlet valve 1 14 discharges the hot air inside the observation tube 1 to the external environment.

[0051] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A steam turbine boiler observation device, characterized in that: The invention comprises an observation tube (1), wherein a front tube (12) and a cleaning frame (3) are respectively fixed at both ends of the observation tube (1), a rear tube (41) is fixed at the other end of the cleaning frame (3), a camera (4) is installed at the other end of the rear tube (41), an observation mirror (42) is installed at the connection between the cleaning frame (3) and the rear tube (41), and a cleaning structure (52) for cleaning the surface of the observation mirror (42) is installed inside the cleaning frame (3), a fixing plate (31) is fixed on the outer wall of the cleaning frame (3), and a driving structure (51) for driving the cleaning structure (52) to operate is installed on the fixing plate (31).

2. A steam turbine boiler observation device according to claim 1, characterized in that: The driving structure (51) comprises a motor (511) mounted on a fixed plate (31); an output end of the motor (511) extends to the other side of the fixed plate (31) and is fixedly connected to one end of a connecting plate (512); the other end of the connecting plate (512) is rotatably connected to a movable rod (513); an end of the movable rod (513) away from the connecting plate (512) extends to the interior of the cleaning frame (3) and is connected to the cleaning structure (52).

3. A steam turbine boiler observation device according to claim 2, characterized in that: The cleaning structure (52) comprises a movable block (521) arranged inside the cleaning frame (3), one end of the movable block (521) being fixed to a movable rod (513), a movable groove (522) and a spring groove (524) being provided inside the movable block (521), a built-in block (527) sliding inside the movable groove (522), one end of the built-in block (527) close to the observation mirror (42) being fixed to a scraper (529) via a plurality of fixed rods (528), and the plurality of fixed rods (528) slidingly engage with the movable block (521).

4. The steam turbine boiler observation device according to claim 3, characterized in that: The movable block (521) has an upper end with an movable opening (523), the movable opening (523) and the movable groove (522) are in communication, the inner wall of the movable opening (523) is slidably connected to the outer wall of an auxiliary rod (5274), the auxiliary rod (5274) is fixed to the upper end of the built-in block (527), a fixed groove (5271) is formed on one side of the built-in block (527) close to the spring groove (524), the inner wall of the spring groove (524) is fixedly connected to a round head latch (526) via a return spring (525), and the fixed groove (5271) is fixed to the inner wall of the spring groove (524) via a return spring (525). 1) is symmetrically provided with a round head slot one (5272) and a round head slot two (5273), the round head slot one (5272) and the round head slot two (5273) are adapted to the round head latch (526), ​​an auxiliary block one (43) and an auxiliary block two (44) are fixed at the top of the cleaning frame (3), the auxiliary block one (43) and the auxiliary block two (44) are symmetrically provided with notches, the directions of the notches are opposite, and arc-shaped guide lines are arranged at the notch positions, and the auxiliary rod (5274) slides with the auxiliary block one (43) and the auxiliary block two (44).

5. The steam turbine boiler observation device according to claim 4, characterized in that: A plurality of rollers (5211) are installed at the bottom of the movable block (521).

6. The steam turbine boiler observation device according to claim 1, characterized in that: A plate frame (11) is fixed to the outer wall of one side of the observation tube (1) close to the front tube (12); the observation tube (1) and the plate frame (11) are internally connected; a protective plate (28) is slidably provided inside the observation tube (1) and the plate frame (11); the end of the protective plate (28) close to the plate frame (11) is fixedly connected to a piston plate (26) via a piston rod (27); the piston rod (27) slides with the plate frame (11); the piston plate (26) is slidably installed inside the air cylinder (21); the air cylinder (21) is installed at one end of the plate frame (11) away from the observation tube (1); and a one-way air inlet valve (22) and a one-way air outlet valve (23) are installed on the air cylinder (21).

7. The steam turbine boiler observation device according to claim 6, characterized in that: A one-way air outlet valve three (24) is installed on the side wall of one end of the air cylinder (21) close to the plate frame (11); the one-way air outlet valve three (24) is connected to a one-way air inlet valve one (13) through an air pipe (25); the one-way air inlet valve one (13) is installed on the observation tube (1); and a one-way air outlet valve one (14) is installed on the other side of the observation tube (1).

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