Flexible anticorrosion coating device for welded joint of hydraulic pressure steel pipe

Abstract

The utility model provides a kind of flexible anticorrosion covering device of hydraulic pressure steel pipe welded joint, it is related to steel pipe anticorrosion structure technical field, to solve the part of welded joint due to having experienced high-temperature welding process, its organizational structure and performance have changed significantly compared with base material, leading to the corrosion resistance of this part is often lower than base material, simultaneously, there are some microscopic defects in welded joint place inevitably, these defects are easy to make corrosive medium invade pipe inner layer, greatly increase the corrosion risk of welded joint problem, including: cover shell;The cover shell is provided with two groups, and the wrapping layer is embedded into the cover shell, the cover shell can provide support protection to flexible wrapping layer, avoid that wrapping layer is damaged by external collision, friction, by the cooperation of dialing roller and ratchet, pawl, loose wrapping layer can be tightened anytime, in this way not only ensure the adhesion of wrapping layer in long-term use, improve the sealing wrapping effect of wrapping layer, also prolong the use cycle of entire anticorrosion device.

Description

Technical Field

[0001] This utility model belongs to the field of steel pipe anti-corrosion structure technology, and more specifically, it relates to a flexible anti-corrosion coating device for welded joints of hydraulic pressure steel pipes. Background Technology

[0002] In the field of water conservancy and hydropower engineering, hydraulic pressure steel pipes play an irreplaceable and crucial role, and are decisive for the stable operation of water conservancy and hydropower projects. Welding is an essential and critical step in the manufacturing and installation of pressure steel pipes. Many pipe sections need to be connected by welding to form a complete and continuous water conveyance channel. However, based on existing technology, it has been found that the microstructure and properties of the welded joint have changed significantly compared with the base material due to the high-temperature welding process. As a result, the corrosion resistance of this part is often lower than that of the base material. At the same time, some micro-defects, such as porosity, slag inclusions, and micro-cracks, are unavoidable at the welded joint. These defects can easily allow corrosive media to penetrate into the inner layer of the pipe, greatly increasing the risk of corrosion of the welded joint. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model relates to a flexible anti-corrosion coating device for welded joints of hydraulic pressure steel pipes. This device solves the problem that existing welded joints, due to the high-temperature welding process, exhibit significantly different microstructures and properties compared to the base material, resulting in lower corrosion resistance at this location compared to the base material. Furthermore, welded joints inevitably contain microscopic defects such as porosity, slag inclusions, and microcracks, which allow corrosive media to easily penetrate the inner layer of the pipe, greatly increasing the risk of corrosion to the welded joint.

[0004] The first aspect of this utility model provides a flexible anti-corrosion coating device for welded joints of hydraulic pressure steel pipes, achieved by the following specific technical means:

[0005] A flexible anti-corrosion coating device for welded joints of hydraulic pressure steel pipes includes:

[0006] The cover has two sets, which are joined together. Each cover has an inner groove. A flipping component is rotatably mounted on the upper end of the left cover, and this flipping component is fastened to the upper end of the right cover. A tightening bolt inside the flipping component can contact the right cover. Both sets of covers have a wrapping layer made of flexible material, which is embedded in the inner groove and extends from the upper end of the cover, penetrating the flipping component. A turning roller is rotatably mounted in the top groove on the inner side of the upper end of the cover, and the turning roller contacts the anti-slip layer on the wrapping layer. A ratchet at the outer end of the turning roller engages with a pawl on the outer side of the cover.

[0007] Furthermore, the top groove is connected to the inner groove, and the top groove is penetrated by the wrapping layer; a bottom block is fixedly installed at the bottom of the cover.

[0008] Furthermore, the lower ends of the two sets of covers are provided with connecting parts, which are rotatably engaged with the bottom blocks on the two sets of covers. The top of the covers is movably equipped with a pawl, which is located on the outside of the top groove.

[0009] Furthermore, a tightening bolt is threaded onto the middle position of the flip-over component.

[0010] Furthermore, the outer end of the actuating roller has an annular distribution of anti-slip protrusions, and a ratchet is fixedly installed at the front end of the actuating roller.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. In this device, by attaching a flexible material wrapping layer to the surface of the pressure steel pipe welded joint, the entire welded surface of the steel pipe welded joint can be wrapped, and the openings of micro-defects such as pores, slag inclusions, and micro-cracks can be sealed, blocking the intrusion channels of corrosive media such as moisture and reducing the risk of corrosion of the welded joint.

[0013] 2. In this device, by embedding the wrapping layer inside the housing, the housing can provide support and protection for the flexible wrapping layer, preventing it from being damaged by external collisions and friction. Through the cooperation of the actuating roller, ratchet, and pawl, the loose wrapping layer can be tightened at any time. This not only ensures the fit of the wrapping layer during long-term use and improves the sealing effect of the wrapping layer, but also extends the service life of the entire anti-corrosion device. Attached Figure Description

[0014] Those skilled in the art will gain a better understanding of the present invention through the accompanying drawings, and the advantages of the present invention will be more clearly demonstrated. The drawings described herein are for illustrative purposes only for the selected embodiments and not for all possible implementations, and are not intended to limit the scope of the present invention.

[0015] In the attached diagram:

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a disassembled structural diagram of the present invention.

[0018] Figure 3 This is a schematic diagram of the bottom side cross-section structure of the cover of this utility model.

[0019] Figure 4 This is a schematic diagram of the connection structure between the flip-up component and the cover of this utility model.

[0020] Figure 5 This is a schematic diagram of the cross-sectional structure of the upper end of the cover of this utility model.

[0021] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0022] 1. Cover; 101. Inner groove; 102. Top groove; 103. Bottom block; 104. Connector; 105. Claw; 2. Flipping component; 201. Tightening bolt; 3. Wrapping layer; 301. Anti-slip layer; 4. Actuating roller; 401. Ratchet. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Example 1: As shown in the attached document Figure 1 To be continued Figure 5 As shown:

[0025] This utility model provides a flexible anti-corrosion coating device for welded joints of hydraulic pressure steel pipes, comprising: a cover 1; two sets of cover 1 are provided, and the two sets of cover 1 are spliced ​​together, and an inner groove 101 is provided inside the cover 1; a flipping part 2 is rotatably installed on the upper end of the left cover 1, the flipping part 2 is fastened to the upper end of the right cover 1, and the tightening bolt 201 inside the flipping part 2 can contact the right cover 1; a wrapping layer 3 is provided inside the two sets of cover 1, the wrapping layer 3 is made of flexible material, and the wrapping layer 3 is embedded in the inner groove 101, and the wrapping layer 3 extends from the upper end of the cover 1, and the wrapping layer 3 penetrates the flipping part 2; a turning roller 4 is rotatably installed in the top groove 102 on the inner side of the upper end of the cover 1, and the turning roller 4 contacts the anti-slip layer 301 on the wrapping layer 3, and the ratchet 401 at the outer end of the turning roller 4 cooperates with the claw 105 on the outer side of the cover 1.

[0026] As a second embodiment of this application, based on embodiment one, such as Figures 3 to 5As shown, the top groove 102 is connected to the inner groove 101, and the top groove 102 is penetrated by the covering layer 3; a bottom block 103 is fixedly installed at the bottom of the cover 1; a connector 104 is provided at the lower end of the two sets of covers 1, and the connector 104 is rotatably engaged with the bottom block 103 on the two sets of covers 1; a claw 105 is movably installed on the top of the cover 1, and the claw 105 is located outside the top groove 102; the cover 1 is provided so that the covering layer 3 can be set inside the cover 1 and provide support and protection for the covering layer; the inner groove is provided. 101, the wrapping layer 3 can be fitted into the cover 1 through the inner groove 101; a top groove 102 is provided, through which the actuating roller 4 can be movably installed to the upper end of the cover 1; a bottom block 103 is provided, through which the cover 1 can be rotatably engaged with the connector 104; a connector 104 is provided, through which the two sets of cover 1 can be hinged; a pawl 105 is provided, through which the ratchet 401 and the actuating roller 4 can be fixed by engaging the pawl 105 with the ratchet 401.

[0027] This application involves wrapping a layer 3 around the welded joint of a pressure steel pipe and fastening a cover 1 to the outer end of the layer 3. The cover 1 supports and protects the layer 3, allowing the flexible layer 3 to fit tightly against the outer end of the pressure steel pipe, thus protecting the welded position of the pipe joint.

[0028] As a third embodiment of this application, based on embodiment one, as follows: Figure 4 and Figure 5 As shown, a tightening bolt 201 is threadedly installed in the middle position of the flipping component 2; the outer end of the actuating roller 4 has an annular distribution of anti-slip protrusions, and a ratchet 401 is fixedly installed at the front end of the actuating roller 4; the flipping component 2 is provided so that the two sets of covers 1 can be fastened together; the tightening bolt 201 is provided so that by tightening the tightening bolt 201, it can be pressed against the right cover 1, thereby fixing the two sets of covers 1; the actuating roller 4 is provided so that by rotating the actuating roller 4, the wrapping layer 3 can be tightened; the ratchet 401 is provided so that by using the ratchet 401 in conjunction with the pawl 105, it can be locked after the actuating roller 4 is rotated.

[0029] This application uses a rotating roller 4 installed in the top groove 102 of the cover 1. By rotating the roller 4, the wrapping layer 3 can be tightened outside the pressure steel pipe. After the roller 4 rotates, the pawl 105 engages with the ratchet 401 to prevent the wrapping layer 3 from loosening at the outer end of the pressure steel pipe. When the wrapping layer 3 becomes loose after long-term use, rotating the roller 4 can tighten the wrapping layer 3, thereby improving its wrapping effect.

[0030] The specific usage and function of this embodiment are as follows:

[0031] In this utility model, such as Figures 1 to 5As shown, unfold the two sets of covers 1, and attach the flexible wrapping layer 3, which is embedded in the inner groove 101 of the cover 1, to the surface of the welding joint, ensuring that the wrapping layer 3 completely covers the joint area and the surrounding easily corroded parts. Then, rotate the two sets of covers 1 to make them fit together. Then, flip the flipping part 2 at the upper end of the left cover 1 and fasten it to the upper end of the right cover 1. Tighten the top bolt 201 in the middle of the flipping part 2 to make it press against the right cover 1, and fix the two sets of covers 1. Move the actuating roller 4 in the top groove 102, and use the anti-slip protrusion structure at the outer end of the actuating roller 4 and the anti-slip layer 3 on the wrapping layer 3 to make it fit together. The friction generated by the contact of phases 01 pulls the two ends of the wrapping layer 3 upwards and tightens the wrapping layer 3 until it is tightly attached to the surface of the pressure steel pipe. At this time, the claw 105 on the outside of the cover 1 will engage with the ratchet 401 on the outside of the actuating roller 4 to fix the actuating roller 4. This can prevent the wrapping layer 3 from loosening. When maintaining the wrapping device later, the staff can rotate the actuating roller 4 again and tighten the wrapping layer 3. After maintenance, the claw 105 will be engaged with the ratchet 401 again to fix it, so that the wrapping layer 3 can maintain a long-term effective wrapping of the pressure steel pipe.

[0032] The foregoing disclosure provides illustrations and descriptions, but is not intended to be exhaustive or to limit the embodiments to the precise forms disclosed. Modifications and variations can be made based on the above disclosure, or modifications and variations can be derived from the practice of the embodiments.

[0033] Even though specific combinations of features are recited in the claims or disclosed in the specification, these combinations are not intended to limit the disclosure of various embodiments. In fact, many of these features can be combined in ways not specifically recited in the claims and / or not specifically disclosed in the specification. Although each dependent claim listed below may depend directly on only one claim, the disclosure of various embodiments includes each dependent claim in combination with every other claim in the claim set.

Claims

1. A flexible anti-corrosion coating device for welded joints of hydraulic pressure steel pipes, comprising: Cover (1); the cover (1) is provided in two sets, and the two sets of cover (1) are spliced ​​together, and the inside of the cover (1) is provided with an inner groove (101); the characteristic is that a flipping part (2) is rotatably installed on the upper end of the left cover (1), the flipping part (2) is fastened to the upper end of the right cover (1), and the tightening bolt (201) in the flipping part (2) can contact the right cover (1); the two sets of cover (1) are provided with a wrapping layer (3), the wrapping layer ( 3) It is made of flexible material, and the wrapping layer (3) is embedded in the inner groove (101), and the wrapping layer (3) extends from the upper end of the cover (1) and the wrapping layer (3) penetrates the flipping part (2); a push roller (4) is rotatably installed in the top groove (102) on the inner side of the upper end of the cover (1), and the push roller (4) is in contact with the anti-slip layer (301) on the wrapping layer (3), and the ratchet (401) at the outer end of the push roller (4) cooperates with the claw (105) on the outer side of the cover (1).

2. The flexible anti-corrosion coating device for welded joints of hydraulic pressure steel pipes according to claim 1, characterized in that, The top groove (102) is connected to the inner groove (101), and the top groove (102) is penetrated by the wrapping layer (3); a bottom block (103) is fixedly installed at the bottom of the cover (1).

3. The flexible anti-corrosion coating device for welded joints of hydraulic pressure steel pipes according to claim 2, characterized in that, The lower ends of the two sets of housings (1) are provided with connectors (104), which are rotatably engaged with the bottom blocks (103) on the two sets of housings (1). The top of the housing (1) is movably equipped with claws (105), which are located outside the top groove (102).

4. The flexible anti-corrosion coating device for welded joints of hydraulic pressure steel pipes according to claim 1, characterized in that, A tightening bolt (201) is threadedly installed at the middle position of the flipping part (2).

5. A flexible anti-corrosion coating device for welded joints of hydraulic pressure steel pipes according to claim 1, characterized in that, The outer end of the actuating roller (4) has an annular distribution of anti-slip protrusions, and a ratchet (401) is fixedly installed at the front end of the actuating roller (4).

Images