Safety detection device for pressure-bearing component of boiler

Abstract

The utility model discloses a safety detection device for a pressure-bearing component of a boiler, and relates to the technical field of safety detection devices. The device comprises a device body, a fixing mechanism and a movable door, a spraying mechanism is arranged on the device body, the spraying mechanism comprises a penetrating fluid barrel and a developing fluid barrel, and an atomizing nozzle is arranged on the side, away from a hose, of a connecting guide pipe. The infusion pump and the atomizing nozzle are used for respectively extracting penetrating fluid or developing fluid from the penetrating fluid barrel or the developing fluid barrel at different detection moments, the penetrating fluid or the developing fluid is sprayed to the welding position of the pressure-bearing component, after the penetrating fluid seeps from the gap, the developing fluid enables the weld joint to present different colors, data such as the shape and the length of the weld joint can be visually observed, and the detection accuracy is improved. And more accurate data can be conveniently provided for the process of processing the welding seam by a worker, so that the worker can better complete the seam filling operation.

Description

Technical Field

[0001] The utility model relates to the technical field of safety detection devices, in particular to a safety detection device for a boiler pressure-bearing component. Background Art

[0002] A boiler is an energy conversion device. The energy input to the boiler includes chemical energy and electrical energy in the fuel. The boiler outputs steam, high-temperature water or organic heat carrier with a certain amount of thermal energy. The pressure-bearing components of the boiler include valves, flanges, furnace core, boiler shell, tube sheet, drum, header, steam collecting box, water-cooled wall tubes, convection tubes and downcomers, etc. Some boilers also have economizers, steam superheaters, etc. Before assembling the boiler, these pressure-bearing components must be tested for safety. At this time, a boiler pressure-bearing component safety testing device is required.

[0003] Existing safety detection devices for boiler pressure-bearing parts usually use gas pressure detection methods and water penetration detection methods when detecting the weld surface of boiler pressure-bearing parts. During gas pressure detection, it can be known whether there is a gap through the change in gas pressure, but it is not obvious enough. Water penetration uses the water seeping from the gap to lock the location of the gap. However, this method can only lock the location of the gap, and cannot visually observe and measure the size data of the weld. After the water dries, the trace no longer exists, and the weld cannot be marked for a long time as needed. Utility Model Content

[0004] Based on this, the purpose of the utility model is to provide a boiler pressure-bearing parts safety detection device to solve the technical problem that the existing boiler pressure-bearing parts safety detection device can only lock the position of the weld but cannot mark the weld well so as to observe and measure the size, shape and other data of the weld in a long-term and intuitive manner, and the reference significance for weld processing needs to be improved.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a boiler pressure-bearing component safety detection device, comprising a device body, a fixing mechanism and a movable door, the device body is provided with a spray mechanism, the spray mechanism comprises a permeate barrel and a developer barrel, the tops of the permeate barrel and the developer barrel are both provided with a liquid pump, one side of the liquid pump is provided with a hose, the output end of the hose is provided with a connecting conduit, the side of the connecting conduit away from the hose is provided with an atomizing nozzle, the connecting conduit is provided with a fixing clamp, and the top of the fixing clamp is provided with a second electric push rod.

[0006] By adopting the above technical scheme, the flanges, furnace core, boiler shell, boiler drum, water-cooled wall tubes, convection tubes and downcomers in the pressure-bearing parts are all circular structures on both sides. The setting of the fixing mechanism can be used to fix most of the pressure-bearing parts. The spraying mechanism can spray penetrant liquid or developer on the welding position as needed, so that when there is a weld, the penetrant liquid passing through the weld can intuitively display the weld under the action of the developer.

[0007] Furthermore, the fixing mechanism includes a first electric push rod, and an electric chuck is provided at the output end of the first electric push rod.

[0008] By adopting the above technical solution, the first electric push rod can be used to adjust the position of the electric chuck, thereby moving the welding part of the boiler pressure-bearing component fixed on the electric chuck to below the corresponding atomizing nozzle.

[0009] Furthermore, the fixing mechanisms are provided in two groups, and the two groups of fixing mechanisms are symmetrically arranged.

[0010] By adopting the above technical solution, two sets of symmetrically arranged fixing mechanisms can better fix the two ends of the pressure-bearing component of the boiler.

[0011] Furthermore, a liquid inlet pipe is arranged on the top of the permeate liquid barrel and the developer liquid barrel, and a solenoid valve is arranged on the liquid inlet pipe.

[0012] By adopting the above technical solution, the liquid inlet pipes on the top of the permeate liquid barrel and the developer liquid barrel are used to replenish the corresponding permeate liquid and developer liquid into the permeate liquid barrel and the developer liquid barrel.

[0013] Furthermore, the inner layer of the hose is made of Teflon material, and the outer layer of the hose is made of PU material.

[0014] By adopting the above technical solution and selecting a special material for the hose, the entire hose has better flexibility and can adapt to the process of adjusting the position of the atomizing nozzle by the second electric push rod.

[0015] Furthermore, a first visual window is provided on the movable door, a second visual window is provided on the permeate barrel and the developer barrel, running wheels are provided at the bottom of the device body, and a movable plate is provided at the lower part of the interior of the device body.

[0016] By adopting the above technical solution, the setting of the first visual window can be used to observe the operation process of the fixing mechanism and the spraying mechanism, as well as the development process after the penetrant liquid and the developer liquid come into contact due to the existence of the weld, and the second visual window can be used to observe the capacity of the liquid inside the penetrant liquid barrel and the developer liquid barrel in real time.

[0017] Furthermore, the first visual window and the second visual window are both made of tempered glass, and a scale is provided on the second visual window.

[0018] By adopting the above technical solution, the tempered glass material of the first visual window and the second visual window has good impact resistance, which improves the strength of the glass itself and makes it safer to use.

[0019] Furthermore, the travel wheel is a universal wheel, and a wheel brake is provided on the travel wheel.

[0020] By adopting the above technical solution, the traveling wheel adopts a universal wheel, so that the movement process of the traveling wheel driving the device body is more flexible.

[0021] Furthermore, the movable plate is filled with activated carbon filler, and a pull ring is provided on the front side of the movable plate.

[0022] By adopting the above technical solution, the activated carbon filled on the movable plate is used to absorb the droplets that are harmful to human health and the environment that are diffused inside the main body of the device during the process of the spray mechanism spraying the penetrant or developer at the welding site, thereby preventing the staff from inhaling the droplets when opening the movable door.

[0023] Furthermore, the movable plate is slidably connected to the device body, and the movable plate is fixedly connected to the pull ring.

[0024] By adopting the above technical solution, when the activated carbon filler on the movable plate needs to be replaced, the pull ring is pulled to cause the movable plate fixedly connected to the pull ring to be stressed, and the stressed movable plate slides out from the device body.

[0025] In summary, the utility model mainly has the following beneficial effects:

[0026] 1. The utility model is provided with a penetrant liquid barrel, a developer liquid barrel, a liquid extraction pump and an atomizing nozzle. The penetrant liquid or the developer liquid is extracted from the penetrant liquid barrel or the developer liquid barrel by the liquid extraction pump and the atomizing nozzle at different times of detection, and sprayed on the welding position of the pressure-bearing component. When the penetrant liquid seeps out from the gap, the developer makes the weld present different colors, and the shape, length and other data of the weld can be observed intuitively, so as to provide more accurate data to the workers in the process of handling the weld, so as to better enable them to complete the seam repairing operation.

[0027] 2. The utility model provides a first visual window, a second visual window and a movable plate. The first visual window can be used to observe the safety detection process of the pressure-bearing parts. The second visual window and the scale thereon can be used to understand the amount of liquid in the permeate barrel and the developer barrel to ensure that both remain available. The activated carbon filled in the movable plate can adsorb the polluted gas when the permeate and developer are sprayed, and the movable plate can be replaced after the activated carbon therein is saturated. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0029] Figure 2 It is a top view of the three-dimensional structure of the utility model;

[0030] Figure 3 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0031] Figure 4 For this utility model Figure 3 Schematic diagram of the structure enlarged at point A in the middle.

[0032] In the figure: 1. device body; 2. fixing mechanism; 21. first electric push rod; 22. electric chuck; 3. spray mechanism; 31. permeate liquid barrel; 32. developer liquid barrel; 33. liquid pump; 34. hose; 35. connecting conduit; 36. atomizing nozzle; 37. second electric push rod; 38. fixing clamp; 4. movable door; 5. first visual window; 6. second visual window; 7. walking wheel; 8. movable plate; 9. pull ring. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0034] The following describes an embodiment of the utility model based on its overall structure.

[0035] Embodiment 1:

[0036] A boiler pressure component safety detection device, such as Figure 1-Figure 4As shown, the device comprises a main body 1, a fixing mechanism 2 and a movable door 4. The main body 1 is provided with a spray mechanism 3, which comprises a permeate barrel 31 and a developer barrel 32. The tops of the permeate barrel 31 and the developer barrel 32 are both provided with a liquid pump 33. A hose 34 is provided on one side of the liquid pump 33. A connecting conduit 35 is provided on the output end of the hose 34. A misting nozzle 36 is provided on the side of the connecting conduit 35 away from the hose 34. A fixing clamp 38 is provided on the connecting conduit 35. A second electric push rod 37 is provided on the top of the fixing clamp 38. The flange, furnace, shell, drum, water-cooled wall tube, convection tube and downcomer are all circular structures on both sides. The setting of the fixing mechanism 2 can be used to fix most of the pressure-bearing parts. The spraying mechanism 3 can spray the penetrant or developer on the welding part as needed, so that when there is a weld, the penetrant through the weld can be used to display the weld intuitively under the action of the developer, so that the shape, length and other data of the weld can be observed and measured more intuitively, which is convenient for providing more accurate data to the workers in the process of handling the weld, so as to better enable them to complete the seam repairing operation.

[0037] See also Figure 1 , Figure 2 , Figure 3 The fixing mechanism 2 includes a first electric push rod 21, and an electric chuck 22 is provided at the output end of the first electric push rod 21. The first electric push rod 21 can be used to adjust the position of the electric chuck 22, thereby moving the welding part of the boiler pressure-bearing component fixed on the electric chuck 22 to below the corresponding atomizing nozzle 36 to assist the spraying process of the penetrant and the developer, and help the weld to achieve the imaging effect smoothly.

[0038] See also Figure 1 , Figure 2 , Figure 3 There are two groups of fixing mechanisms 2, and the two groups of fixing mechanisms 2 are symmetrically arranged. The two groups of symmetrically arranged fixing mechanisms 2 can better fix the two ends of the pressure-bearing parts of the boiler. Through the first electric push rods 21 of the fixing mechanisms 2 arranged on both sides, the welding positions on the pressure-bearing parts of the boiler are adjusted accordingly to adapt to different times of the detection process.

[0039] See also Figure 1 , Figure 2 , Figure 3 A liquid inlet pipe is provided at the top of the permeate liquid barrel 31 and the developer liquid barrel 32, and an electromagnetic valve is provided on the liquid inlet pipe. The liquid inlet pipe at the top of the permeate liquid barrel 31 and the developer liquid barrel 32 is used to replenish the corresponding permeate liquid and developer liquid into the permeate liquid barrel 31 and the developer liquid barrel 32. The setting of the electromagnetic valve makes the control of the liquid replenishment process more precise.

[0040] See also Figure 3 , Figure 4The inner layer of the hose 34 is made of Teflon material, and the outer layer of the hose 34 is made of PU material. The selection of special materials for the hose 34 makes the entire hose 34 have better flexibility and can adapt to the adjustment process of the second electric push rod 37 on the position of the atomizing nozzle 36. At the same time, the inside of the hose 34 is smooth, easy to clean, not easy to adhere to the corresponding liquid, and has better safety in use.

[0041] Embodiment 2:

[0042] See also Figure 1 , Figure 2 , Figure 3 A first visual window 5 is provided on the movable door 4, a second visual window 6 is provided on the permeate barrel 31 and the developer barrel 32, a running wheel 7 is provided at the bottom of the device body 1, and a movable plate 8 is provided at the lower part of the device body 1. The first visual window 5 can be used to observe the operation process of the fixing mechanism 2 and the spraying mechanism 3, as well as the development process after the permeate and the developer are in contact due to the existence of the weld. The second visual window 6 can observe the capacity of the liquid inside the permeate barrel 31 and the developer barrel 32 in real time. The running wheel 7 can assist the device body 1 to move to the desired position. The movable plate 8 can be flexibly moved in and out according to actual use needs.

[0043] See also Figure 1 , Figure 2 , Figure 3 The first visual window 5 and the second visual window 6 are both made of tempered glass, and a scale is provided on the second visual window 6. The tempered glass material of the first visual window 5 and the second visual window 6 has good impact resistance, improves the strength of the glass itself, and makes it safer to use. The scale on the second visual window 6 is used to refer to the liquid levels of the permeate barrel 31 and the developer barrel 32, especially when the liquid is obviously insufficient or when the liquid is replenished.

[0044] See also Figure 1 , Figure 2 , Figure 3 The walking wheel 7 is a universal wheel, and a wheel brake is arranged on the walking wheel 7. The walking wheel 7 is a universal wheel, so that the moving process of the walking wheel 7 driving the device body 1 is more flexible. The wheel brake of the walking wheel 7 can keep the device body 1 stable during use after it moves to the specified position.

[0045] See also Figure 1 , Figure 2 , Figure 3The movable plate 8 is filled with activated carbon filler, and a pull ring 9 is arranged on the front side of the movable plate 8. The activated carbon filled on the movable plate 8 is used to absorb the droplets that are harmful to human health and the environment that are diffused inside the device body 1 during the process of the spray mechanism 3 spraying the penetrant or the developer at the welding part, so as to prevent the staff from inhaling the droplets when opening the movable door 4. The setting of the pull ring 9 makes it convenient for the hand to apply force after the activated carbon filler on the movable plate 8 is saturated, so as to move the movable plate 8 out and replace the activated carbon filler.

[0046] See also Figure 1 , Figure 2 , Figure 3 The movable plate 8 is slidably connected to the device body 1, and the movable plate 8 is fixedly connected to the pull ring 9. When the activated carbon filler on the movable plate 8 needs to be replaced, the pull ring 9 is pulled to make the movable plate 8 fixedly connected to the pull ring 9 be subjected to force. After the force is applied, the movable plate 8 slides out of the device body 1. When the replacement of the activated carbon filler is completed, the movable plate 8 is slid back to the inside of the device body 1 to be reset.

[0047] The implementation principle of the utility model is as follows: first, the welding position of the pressure-bearing component of the boiler to be inspected is cleaned, and the movable door 4 is opened, and the position of the electric chuck 22 is adjusted by the first electric push rod 21, so that the electric chuck 22 can well fix the pressure-bearing component of the boiler to be inspected, and the weld of the pressure-bearing component is located just below the spray range of the atomizing nozzle 36; secondly, the movable door 4 is closed, and the second electric push rod 37 at the bottom of the permeate barrel 31 is started to finely adjust the height of the corresponding atomizing nozzle 36 according to the thickness of the pressure-bearing component, and the liquid pump 33 at the top of the permeate barrel 31 is started, and the permeate passes through the soft The pipe 34 and the connecting conduit 35 are sprayed out from the corresponding atomizing nozzle 36, and the electric chuck 22 is started at the same time. The electric chuck 22 drives the pressure-bearing components fixed thereon to rotate slowly and uniformly, so that all the welding parts are sprayed with a proper amount of penetrant liquid. Then, the operating liquid pump 33 is turned off. During the spraying process, the toxic droplets diffused in the interior of the device body 1 are successfully adsorbed by the activated carbon filled on the movable plate 8 to prevent them from continuing to remain in the interior of the device body 1; then, the penetration process is observed through the first visual window 5. When the penetrant liquid is well penetrated after a certain period of time, the movable door 4 is opened to keep the electric chuck 22 driving the pressure-bearing components to rotate slowly and uniformly, so that all the welding parts are sprayed with a proper amount of penetrant liquid. During the rotation process of the pressure-bearing component, the worker stays close to the door side, wipes off the penetrant liquid at the welding position, keeps the welding position clean and dry, and then closes the movable door 4 again; finally, the second electric push rod 37 at the bottom of the developer barrel 32 is started to finely adjust the height of the corresponding atomizing nozzle 36 according to the thickness of the pressure-bearing component, and the liquid pump 33 at the top of the developer barrel 32 is started to spray the developer from the corresponding atomizing nozzle 36 through the hose 34 and the connecting conduit 35. In the process of the electric chuck 22 driving the pressure-bearing component fixed thereon to rotate slowly and uniformly, the spraying process of the developer at the welding position is completed, and the generated during the spraying process The toxic droplets are still adsorbed by the activated carbon filled on the movable plate 8, and the weld imaging continues to be observed through the first visual window 5. When the imaging is completed at an appropriate interval, the movable door 4 is opened, and the electric chuck 22 is controlled to rotate the pressure-bearing component to the position where the weld exists, and the data of the weld is recorded and processed accordingly until all the processing is completed; when it is observed through the second visual window 6 that the permeate barrel 31 and the developer barrel 32 are insufficient, the solenoid valve on the liquid inlet pipe is opened in time to replenish the two, and after the activated carbon on the movable plate 8 is saturated, the pull ring 9 is pulled to pull out the movable plate 8 and replace it.

[0048] Parts not involved in the present invention are the same as the prior art or can be implemented by using the prior art, and will not be described in detail here.

[0049] Although an embodiment of the utility model has been shown and described, this specific embodiment is only an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contribution as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A safety detection device for boiler pressure-bearing parts, Features: The invention comprises a device body (1), a fixing mechanism (2) and a movable door (4); the device body (1) is provided with a spray mechanism (3); the spray mechanism (3) comprises a permeate barrel (31) and a developer barrel (32); a liquid pump (33) is provided on the top of each of the permeate barrel (31) and the developer barrel (32); a hose (34) is provided on one side of the liquid pump (33); a connecting conduit (35) is provided on the output end of the hose (34); an atomizing nozzle (36) is provided on the side of the connecting conduit (35) away from the hose (34); a fixing clamp (38) is provided on the connecting conduit (35); and a second electric push rod (37) is provided on the top of the fixing clamp (38).

2. The boiler pressure-bearing component safety detection device according to claim 1, Features: The fixing mechanism (2) comprises a first electric push rod (21), and an electric chuck (22) is provided at the output end of the first electric push rod (21).

3. The boiler pressure-bearing component safety detection device according to claim 1, Features: The fixing mechanisms (2) are provided in two groups, and the two groups of fixing mechanisms (2) are symmetrically arranged.

4. The boiler pressure-bearing component safety detection device according to claim 1, Features: The tops of the permeate liquid barrel (31) and the developer liquid barrel (32) are provided with liquid inlet pipes, and the liquid inlet pipes are provided with electromagnetic valves.

5. The boiler pressure-bearing component safety detection device according to claim 1, Features: The inner layer of the hose (34) is made of Teflon material, and the outer layer of the hose (34) is made of PU material.

6. The boiler pressure-bearing component safety detection device according to claim 1, Features: The movable door (4) is provided with a first visual window (5), the permeate barrel (31) and the developer barrel (32) are provided with second visual windows (6), the bottom of the device body (1) is provided with running wheels (7), and a movable plate (8) is provided at the lower part of the device body (1).

7. The boiler pressure-bearing component safety detection device according to claim 6, Features: The first visual window (5) and the second visual window (6) are both made of tempered glass, and the second visual window (6) is provided with a scale.

8. The boiler pressure-bearing component safety detection device according to claim 6, Features: The running wheel (7) is a universal wheel, and a wheel brake is arranged on the running wheel (7).

9. The boiler pressure-bearing component safety detection device according to claim 6, Features: The movable plate (8) is filled with activated carbon filler, and a pull ring (9) is provided on the front side of the movable plate (8).

10. The boiler pressure-bearing component safety detection device according to claim 6, Features: The movable plate (8) is slidably connected to the device body (1), and the movable plate (8) is fixedly connected to the pull ring (9).

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