Water tank descaling device

Abstract

The invention discloses a water tank descaling device which comprises a walking mechanism, the walking mechanism comprises a driven walking part and a driving walking part capable of moving close to and away from one side of the driven walking part, and the driven walking part and the driving walking part can be alternately adsorbed on the inner top wall of a water tank to walk in a peristaltic mode. According to the water tank descaling device, the driven walking part and the driving walking part are alternately adsorbed to the inner top wall of the water tank, the distance between the driving walking part and the driven walking part is changed, and the rotating assembly is matched, so that the walking mechanism can drive the descaling mechanism to move everywhere in the water tank, and high-pressure water columns are sprayed to areas needing to be descaled for descaling; and the height of the descaling mechanism is changed through the lifting mechanism, so that the descaling area of the descaling mechanism is wider, meanwhile, the descaling mechanism can avoid the supporting frame in the water tank when moving through contraction, and compared with manual descaling in the water tank, the descaling efficiency is higher.

Description

Technical Field

[0001] The present invention relates to the technical field of power plants, and in particular, to a water tank descaling device. Background Art

[0002] The statements herein only provide background art related to the present invention and do not necessarily constitute prior art.

[0003] The power plant boiler is the core equipment of a thermal power plant, mainly responsible for generating steam to drive the generator set to generate electricity. The make-up water tank, as an important part of the power plant boiler, can provide start-up water filling and operation water replenishment for the power plant boiler system.

[0004] Due to the influence of impurities in the water during the long-term use of the make-up water tank, scale will gradually accumulate on its inner wall, causing corrosion inside the make-up water tank. Therefore, in order to improve its service life, the inside of the make-up water tank is generally descaled regularly. However, due to the criss-crossed support frames distributed inside the existing make-up water tank, when the descaling personnel enter the inside of the make-up water tank for cleaning and descaling work, they are extremely easily blocked by the support frames, resulting in poor current descaling efficiency. Summary of the Invention

[0005] The purpose of the present invention is to address the above deficiencies and provide a water tank descaling device to achieve the purpose of improving the descaling efficiency of the water tank.

[0006] To solve the above technical problems, the present invention adopts the following technical solutions: A water tank descaling device, comprising:

[0007] A traveling mechanism, the traveling mechanism includes a driven traveling part and a driving traveling part that can move toward and away from one side of the driven traveling part. The driven traveling part and the driving traveling part can alternately adsorb on the inner top wall of the water tank and move in a peristaltic manner. A rotating assembly for adjusting the traveling direction is provided between the driven traveling part and the driving traveling part;

[0008] A descaling mechanism, arranged below the traveling mechanism, for spraying high-pressure water flow to the area to be descaled in the water tank;

[0009] A lifting mechanism, arranged between the traveling mechanism and the descaling mechanism, for lifting and adjusting the descaling mechanism.

[0010] Further, the driven traveling part includes a driven chassis, and at least one first adsorption component capable of adsorbing on the inner top wall of the water tank is arranged on the top of the driven chassis;

[0011] The active walking part includes an active chassis arranged at the bottom of the driven chassis. An expansion and contraction component is arranged inside the active chassis, which penetrates the active chassis and can expand and contract and move to one side. At the outer end of the active chassis where the expansion and contraction component is located, there is a second adsorption component that can adsorb on the inner top wall of the water tank. The adsorption surfaces of the first adsorption component and the second adsorption component are in the same plane.

[0012] Furthermore, the driven chassis is rotatably connected to the active chassis. The rotation component includes a rotation motor fixedly arranged on the active chassis. A gear is arranged at the output end of the rotation motor. A plurality of tooth grooves that are meshed with the gear and distributed in a ring shape are formed on the driven chassis.

[0013] Furthermore, the descaling mechanism includes a swing arm arranged at the bottom of the lifting mechanism and capable of swinging left and right. One end of the swing arm is rotatably connected to the lifting mechanism. A nozzle capable of swinging up and down is arranged at the other end of the swing arm. A swing motor for driving the nozzle to rotate up and down is arranged on the swing arm. The descaling mechanism further includes a reciprocating swing component for driving the swing arm to swing left and right.

[0014] Furthermore, the reciprocating swing component includes an electric reciprocating lead screw arranged at the bottom of the lifting mechanism. A convex block capable of reciprocating left and right following the slider is arranged on the slider of the electric reciprocating lead screw. One end of the convex block is inserted into the swing arm, and a sliding groove for the convex block to slide is formed on the swing arm.

[0015] Furthermore, the top end of the lifting mechanism is connected to the active chassis. The lifting mechanism can rotate synchronously with the active chassis. A camera component for observing the descaling condition of the water tank is arranged on the lifting mechanism.

[0016] Furthermore, a rotary joint penetrating the driven chassis is arranged on the active chassis. A water inlet pipe is detachably arranged at the water inlet end of the rotary joint. A water delivery pipe capable of folding and unfolding is arranged between the water outlet end of the rotary joint and the water inlet end of the nozzle;

[0017] The water delivery pipe is composed of a plurality of rigid pipe segments and a plurality of corrugated pipe segments. Each adjacent two rigid pipe segments are connected by a corrugated pipe segment.

[0018] Furthermore, at least one lifting ring for the hook to hang on is arranged at the top of the driven chassis. The top height of the lifting ring is not higher than the top height of the first adsorption component.

[0019] The beneficial effects of the present invention are embodied in:

[0020] In the present invention, by alternately adsorbing the driven walking part and the driving walking part on the inner top wall of the water tank and changing the distance between the driving walking part and the driven walking part, the walking mechanism can adhere to the inner top wall of the water tank and perform peristaltic walking. By setting the rotating assembly, the traveling directions of the driven walking part and the driving walking part can also be changed, so that the walking mechanism can drive the descaling mechanism to move everywhere inside the water tank and spray high-pressure water jets to the area where descaling is required for descaling. By changing the height of the descaling mechanism through the lifting mechanism, the descaling area of the descaling mechanism is wider, and at the same time, the descaling mechanism can avoid the internal support frame of the water tank when moving by shrinking. Compared with manually entering the water tank for descaling, the descaling efficiency is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a perspective view of the present invention;

[0022] Figure 2 is a structural view of the walking mechanism of the present invention;

[0023] Figure 3 is a structural view of the descaling mechanism of the present invention;

[0024] Figure 4 is a schematic connection diagram of the electric reciprocating lead screw and the convex block of the present invention;

[0025] Figure 5 is a schematic working diagram of the present invention.

[0026] In the figure:

[0027] 1. Walking mechanism; 11. Driven chassis; 12. First adsorption assembly; 13. Driving chassis; 14. Telescopic assembly; 15. Second adsorption assembly; 16. Rotating motor; 17. Gear; 2. Descaling mechanism; 21. Swing arm; 22. Nozzle; 23. Swing motor; 24. Electric reciprocating lead screw; 25. Convex block; 3. Lifting mechanism; 4. Water delivery pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] Please refer to Figures 1-5 , the present invention discloses a water tank descaling device, including:

[0030] A walking mechanism 1, the walking mechanism 1 comprises a driven walking part and an active walking part that can move toward and away from the driven walking part, the driven walking part and the active walking part can be alternately adsorbed on the top wall of the water tank to move in a creeping manner, and a rotating component for adjusting the travel direction is provided between the driven walking part and the active walking part;

[0031] The descaling mechanism 2 is arranged below the walking mechanism 1 and is used to spray high-pressure water flow to the area to be descaled in the water tank;

[0032] The lifting mechanism 3 is arranged between the traveling mechanism 1 and the descaling mechanism 2 and is used for lifting and lowering the descaling mechanism 2 .

[0033] The present invention, by alternately adsorbing the driven walking part and the active walking part on the top wall inside the water tank and changing the distance between the active walking part and the driven walking part, enables the walking mechanism 1 to be attached to the top wall inside the water tank for peristaltic walking. By setting a rotating component, the moving directions of the driven walking part and the active walking part can also be changed, so that the walking mechanism 1 can drive the descaling mechanism 2 to move throughout the inside of the water tank, and spray high-pressure water columns to the areas requiring descaling for descaling. The height of the descaling mechanism 2 is changed by the lifting mechanism 3, so that the descaling area of ​​the descaling mechanism 2 is wider. At the same time, the descaling mechanism 2 can be shrunk to avoid the internal support frame of the water tank when moving. Compared with manual entry into the water tank for descaling, the descaling efficiency is higher.

[0034] Preferably, the lifting mechanism 3 can adopt a scissor-type lifting assembly. The scissor-type lifting assembly is common knowledge in the art, so its specific structural composition and working principle will not be described in detail in this article.

[0035] It should be noted that when the water tank descaling device is retracted to its smallest state, it can be inserted through the water tank inspection port without the need for additional modification of the water tank. In addition, in order to improve the descaling efficiency of the descaling mechanism 2, before the descaling operation, the scale can be softened by adding a descaling agent into the inside of the water tank, so that the scale can be more easily peeled off from the water tank under the flushing of the descaling mechanism 2.

[0036] In one embodiment, the driven walking part includes a driven chassis 11, and at least one first adsorption component 12 capable of being adsorbed on the top wall of the water tank is arranged on the top of the driven chassis 11;

[0037] The active walking part includes an active chassis 13 arranged at the bottom of the driven chassis 11, and a telescopic component 14 is arranged in the active chassis 13, which runs through the active chassis 13 and can be telescopically moved to one side. The telescopic component 14 is located at one end outside the active chassis 13 and is provided with a second adsorption component 15 that can be adsorbed on the top wall of the water tank. The adsorption surface of the first adsorption component 12 and the adsorption surface of the second adsorption component 15 are in the same plane.

[0038] With such a design, when the first adsorption component 12 adsorbs to the inner top wall of the water tank, the second adsorption component 15 can first release its adsorption to the inner top wall of the water tank. Then, by the elongation movement of the telescopic component 14, the distance between the first adsorption component 12 and the second adsorption component 15 can be changed. After the distance adjustment is completed, the second adsorption component 15 adsorbs to the inner top wall of the water tank. After that, the first adsorption component 12 releases its adsorption and the telescopic component 14 contracts, so that the first adsorption component 12 can approach the second adsorption component 15. By repeating the above operations, the traveling mechanism 1 can creep and travel in the water tank.

[0039] It should be noted that the first adsorption component 12 and the second adsorption component 15 can select an electromagnet adsorption component or a vacuum adsorption component according to the material of the water tank. The electromagnet adsorption component, the vacuum adsorption component and the telescopic component 14 are common knowledge in the art, so the specific structural composition and working principle thereof will not be elaborated too much in this text.

[0040] In an embodiment, the driven chassis 11 is rotatably connected to the driving chassis 13. The rotating component includes a rotating motor 16 fixedly arranged on the driving chassis 13. A gear 17 is arranged on the output end of the rotating motor 16. A plurality of tooth grooves which are meshed with the gear 17 and distributed in a ring shape are formed on the driven chassis 11.

[0041] With such a design, by starting the rotating motor 16 to drive the gear 17 to rotate, the driven chassis 11 provided with tooth grooves is driven by the gear 17 to rotate. When the first adsorption component 12 adsorbs to the inner top wall of the water tank, since the driven chassis 11 cannot rotate, at this time, the driving chassis 13 will rotate around its axis under the cooperation of the gear 17 and the tooth grooves. Thus, by controlling the enabling duration of the rotating motor 16, the traveling directions of the driven traveling part and the driving traveling part can be changed.

[0042] In an embodiment, the descaling mechanism 2 includes a swing arm 21 which is arranged at the bottom of the lifting mechanism 3 and can swing left and right. One end of the swing arm 21 is rotatably connected to the lifting mechanism 3. A nozzle 22 which can swing up and down is arranged at the other end of the swing arm 21. A swing motor 23 for driving the nozzle 22 to rotate up and down is arranged on the swing arm 21. The descaling mechanism 2 further includes a reciprocating swing component for driving the swing arm 21 to swing left and right.

[0043] With such a design, the nozzle 22 can not only adjust the up and down flushing angles under the drive of the swing motor 23, but also swing left and right under the drive of the reciprocating swing component, so that after each movement of the traveling mechanism 1, the descaling mechanism 2 can descale as large an area as possible.

[0044] In one embodiment, the reciprocating swing assembly includes an electric reciprocating lead screw 24 disposed at the bottom of the lifting mechanism 3. A convex block 25 capable of reciprocating left and right following the slider is provided on the slider of the electric reciprocating lead screw 24. One end of the convex block 25 is inserted into the swing arm 21, and a sliding groove for the convex block 25 to slide is formed on the swing arm 21.

[0045] With such a design, when the electric reciprocating lead screw 24 is started, the reciprocating movement of the slider will drive the convex block 25 to continuously reciprocate. And because the convex block 25 is inserted into the swing arm 21, the swing arm 21 is pushed to continuously swing left and right around the rotating shaft, achieving the purpose of increasing the horizontal descaling area of the descaling mechanism 2.

[0046] In one embodiment, the top end of the lifting mechanism 3 is connected to the active chassis 13. The lifting mechanism 3 can rotate synchronously with the active chassis 13, and a camera assembly for observing the descaling condition of the water tank is provided on the lifting mechanism 3.

[0047] With such a design, the external maintenance personnel can observe the internal situation by using the camera assembly, which is convenient for the maintenance personnel to operate externally. And because the top end of the lifting mechanism 3 is connected to the active chassis 13, when the second adsorption assembly 15 is in a non-adsorbed state, the rotation of the active chassis 13 will drive the descaling mechanism 2 below to rotate together, so that the descaling mechanism 2 can descale the surrounding area after rotation, further increasing the descaling range of the descaling mechanism 2.

[0048] It should be noted that the camera assembly belongs to the common knowledge in the art, so the specific structural composition and working principle thereof will not be described in detail herein.

[0049] In one embodiment, a rotary joint penetrating the driven chassis 11 is provided on the active chassis 13. A water inlet pipe is detachably provided at the water inlet end of the rotary joint, and a water delivery pipe 4 capable of being folded and unfolded is provided between the water outlet end of the rotary joint and the water inlet end of the nozzle 22;

[0050] The water delivery pipe 4 is composed of a plurality of rigid pipe segments and a plurality of corrugated pipe segments, and adjacent two rigid pipe segments are connected by a corrugated pipe segment.

[0051] With such a design, the rotation of the active chassis 13 does not affect the water supply of the external water inlet pipe to the nozzle 22. At the same time, because the water delivery pipe 4 can be folded and unfolded, it can automatically change following the telescopic adjustment of the lifting mechanism 3 to meet the water supply requirements at different telescopic heights.

[0052] In one embodiment, at least one hanging ring for hooking by a lifting hook is provided on the top of the driven chassis 11, and the top height of the hanging ring is not higher than the top height of the first adsorption assembly 12.

[0053] With such a design, the water tank descaling device can be placed into the water tank by connecting it to the lifting ring through the lifting device. At the same time, when descaling the area below the maintenance opening, since there is no adsorption area above the maintenance opening, it is necessary to cooperate with the lifting device to keep the water tank descaling device suspended in the maintenance opening area for descaling treatment.

[0054] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0055] In addition, if there are descriptions such as "first", "second", etc. involved in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0056] In addition, "a plurality of" means two or more.

[0057] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A water tank descaling device, characterized in that: include: A walking mechanism (1), the walking mechanism (1) comprising a driven walking part and an active walking part capable of moving toward and away from the driven walking part, the driven walking part and the active walking part being capable of alternately adsorbing on the top wall of the water tank to move in a peristaltic manner, and a rotating component for adjusting the travel direction is provided between the driven walking part and the active walking part; A descaling mechanism (2) is arranged below the walking mechanism (1) and is used to spray a high-pressure water flow toward the area to be descaled in the water tank; The lifting mechanism (3) is arranged between the walking mechanism (1) and the descaling mechanism (2) and is used to lift and lower the descaling mechanism (2).

2. A water tank descaling device according to claim 1, characterized in that: The driven walking part comprises a driven chassis (11), and the top of the driven chassis (11) is provided with at least one first adsorption component (12) capable of being adsorbed on the top wall of the water tank; The active walking part comprises an active chassis (13) arranged at the bottom of the driven chassis (11), a telescopic component (14) penetrating the active chassis (13) and capable of telescopic movement to one side is arranged in the active chassis (13), a second adsorption component (15) capable of adsorbing on the top wall of the water tank is arranged at one end of the telescopic component (14) located outside the active chassis (13), and the adsorption surface of the first adsorption component (12) and the adsorption surface of the second adsorption component (15) are in the same plane.

3. A water tank descaling device according to claim 2, characterized in that: The driven chassis (11) is rotationally connected to the driving chassis (13), the rotating assembly comprises a rotating motor (16) fixedly arranged on the driving chassis (13), a gear (17) is arranged on the output end of the rotating motor (16), and the driven chassis (11) is provided with a plurality of tooth grooves meshing with the gear (17) and distributed in an annular shape.

4. A water tank descaling device according to claim 2, characterized in that: The descaling mechanism (2) comprises a swing arm (21) which is arranged at the bottom of the lifting mechanism (3) and can swing left and right, one end of the swing arm (21) is rotatably connected to the lifting mechanism (3), the other end of the swing arm (21) is provided with a nozzle (22) which can swing up and down, the swing arm (21) is provided with a swing motor (23) for driving the nozzle (22) to rotate up and down, and the descaling mechanism (2) also comprises a reciprocating swing component for driving the swing arm (21) to swing left and right.

5. A water tank descaling device according to claim 4, characterized in that: The reciprocating swing assembly comprises an electric reciprocating screw (24) arranged at the bottom of the lifting mechanism (3); a slider of the electric reciprocating screw (24) is provided with a protrusion (25) capable of moving back and forth left and right following the slider; one end of the protrusion (25) is inserted into a swing arm (21); and a slide groove for the protrusion (25) to slide is provided on the swing arm (21).

6. A water tank descaling device according to claim 2, characterized in that: The top end of the lifting mechanism (3) is connected to the active chassis (13), and the lifting mechanism (3) can rotate synchronously with the active chassis (13). The lifting mechanism (3) is provided with a camera assembly for observing the descaling condition of the water tank.

7. A water tank descaling device according to claim 4, characterized in that: The active chassis (13) is provided with a rotary joint penetrating the driven chassis (11); a water inlet end of the rotary joint is detachably provided with a water inlet pipe; and a foldable and unfoldable water delivery pipe (4) is provided between the water outlet end of the rotary joint and the water inlet end of the nozzle (22); The water delivery pipe (4) is composed of a plurality of hard pipe sections and a plurality of corrugated pipe sections, and each two adjacent hard pipe sections are connected via a corrugated pipe section.

8. A water tank descaling device according to claim 2, characterized in that: At least one lifting ring for hanging a lifting hook is arranged on the top of the driven chassis (11), and the top height of the lifting ring is not higher than the top height of the first adsorption component (12).

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