Pipe welding protective cover

Abstract

This utility model discloses a pipe welding protective cover, relating to the field of construction technology. The pipe welding protective cover includes a protective body and a locking structure. One end of the protective body in a first direction has a recessed receiving groove. The protective body includes multiple fixing parts and connecting parts, which are staggered in a second direction. Each connecting part is flexibly arranged. At least one fixing part has an air inlet, and at least one fixing part has an air outlet for inert gas to enter. The locking structure is connected to the two opposite ends of the protective body in the second direction, and is fitted onto the pipe together with the protective body. One end of the protective body in the first direction has a welding port communicating with the receiving groove. This design improves the applicability of the pipe welding protective cover and reduces tool costs, storage costs, and labor costs for welding pipes made of special materials.

Description

Technical Field

[0001] This utility model relates to the field of construction technology, and in particular to a protective cover for pipe welding. Background Technology

[0002] Zirconium is a Group IV-B element in the periodic table. Zirconium and its alloys are silvery rare metals with a high melting point (1850℃), moderate density (6.5 g / cm³), and good strength-to-ductility balance. Like titanium, zirconium exhibits excellent corrosion resistance in many acidic and alkaline media, making it an excellent chemical corrosion-resistant structural material. However, during the welding thermal cycle, when zirconium is heated to the welding temperature, its surface oxides easily dissolve, affecting weld quality. The presence of harmful elements and their compounds in the weld increases the brittle structure of the weld metal, drastically reducing its mechanical properties and corrosion resistance.

[0003] Therefore, during the welding process of the pickaxe, it is necessary to fill the welding area with inert gas and clean the surface of the pickaxe before welding to protect the welding area.

[0004] However, existing protective devices for welding areas of pickaxe materials can only protect one type of pickaxe material pipe. For multiple types of pickaxe material pipes, corresponding protective devices need to be prepared for each type, which has a narrow scope of application and requires a lot of tool and labor costs. Utility Model Content

[0005] The main purpose of this utility model is to propose a pipe welding protective cover, which aims to improve the existing protective devices that can only protect a single type of pick material pipe. For multiple types of pick material pipes, corresponding protective devices need to be prepared for each type, resulting in a narrow scope of application and high tool and labor costs.

[0006] To achieve the above objectives, the pipe welding protective cover proposed in this utility model includes:

[0007] The protective body has a recessed receiving groove at one end in a first direction. The protective body includes multiple fixing parts and connecting parts, which are staggered in a second direction. Each connecting part is flexibly configured. At least one fixing part has an air inlet, and at least one fixing part has an air outlet. The air inlet is used to allow inert gas to enter.

[0008] A locking structure, wherein the two opposite ends of the locking structure are respectively connected to the two ends of the protective body in the second direction, so as to be sleeved on the pipe together with the protective body;

[0009] The protective body has a welded joint at one end in the first direction that connects to the receiving groove.

[0010] In one embodiment, each of the connecting portions is provided with at least one skeleton strip, the skeleton strip is provided to extend along a second direction, and the skeleton is configured to deform under the action of external force.

[0011] In one embodiment, the protective body further includes an air inlet pipe, which extends along a first direction, with one end connected to the air inlet and the other end bent toward a second direction to connect to an inert gas supply source.

[0012] In one embodiment, the locking structure includes:

[0013] Two locking straps, one end of each locking strap being connected to both ends of the protective body in a second direction; and,

[0014] The adjusting part is fixedly connected to one end of one of the locking bands and slidably connected to the other locking band.

[0015] In one embodiment, the pipe welding protective cover further includes a gripping part, which is disposed on one of the fixing parts and is disposed away from the air outlet, and the gripping part is used for the operator to hold.

[0016] In one embodiment, the air inlets are provided in multiple ways, the grip portion is provided corresponding to one of the air inlets, and the grip portion is provided with a through hole that communicates with the air inlets.

[0017] In one embodiment, the pipe welding protective cover further includes a gas filter structure disposed within the receiving groove and covering the air inlet. The gas filter structure is used to filter the inert gas blown in from the air inlet.

[0018] In one embodiment, the air filtration structure includes a filter screen.

[0019] In one embodiment, the pipe welding protective cover further includes a sealing ring, which is disposed on one side of the protective body in a first direction and is elastically arranged to abut against the pipe.

[0020] In one embodiment, the pipe welding protective cover further includes an auxiliary bonding portion disposed in the peripheral area of ​​the protective body for bonding the protective body to the pipe.

[0021] In the technical solution of this utility model, when welding pipes made of special materials and requiring air isolation, the operator first places the protective body tightly against the area to be welded on the pipe. At this time, the multiple fixing parts provide a base for the pipe welding protective cover. Since the multiple connecting parts are flexibly designed, they can deform circumferentially to ensure the protective body is completely flush against the pipe, so that the shape of the multiple protective bodies conforms to the outer surface of the pipe, thereby completely covering the area to be welded. Then, the operator operates the locking structure. The locking structure and the protective body are fitted together onto the pipe, covering the area to be welded. The area to be welded aligns with the opening of the receiving groove. The operator continuously supplies inert gas into the receiving groove through the air inlet. Under pressure, the air in the receiving groove exits through the air outlet until it is filled with inert gas. The operator can then insert welding tools into the receiving groove through the welding port to weld the area on the pipe, ensuring weld quality. This design allows the pipe welding protective cover to be used for welding pipes of various diameters. Operators no longer need to select different models of protective covers based on pipe diameter, reducing tool and storage costs for welding pipes made of special materials, and also reducing the workload and labor costs for operators. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0023] Figure 1 A schematic diagram of a structure of an embodiment of the pipe welding protective cover provided by this utility model;

[0024] Figure 2 for Figure 1 A bottom view of the welding protective cover for the pipeline.

[0025] Explanation of icon numbers:

[0026] 100. Pipe welding protective cover; 1. Protective body; 11. Fixing part; 12. Connecting part; 13. Air inlet pipe; 2. Locking structure; 21. Locking band; 22. Adjusting part; 3. Holding part; 4. Air filtering structure; 5. Sealing ring.

[0027] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0030] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0031] This invention proposes a protective cover for pipe welding. It aims to improve upon existing protective devices that can only protect a single type of welded pipe. For multiple types of welded pipe, separate protective devices for each type are required, resulting in a narrow range of applications and significant tool and labor costs.

[0032] Please see Figure 1-2In one embodiment of this utility model, the pipe welding protective cover 100 includes a protective body 1 and a locking structure 2. The protective body 1 has a recessed receiving groove at one end in a first direction. The protective body 1 includes a plurality of fixing parts 11 and connecting parts 12. The plurality of fixing parts 11 and connecting parts 12 are staggered in a second direction. Each connecting part 12 is flexibly arranged. Among the plurality of fixing parts 11, at least one fixing part 11 has an air inlet and at least one fixing part 11 has an air outlet. The air inlet is used to allow inert gas to enter. The locking structure 2 is connected to the two ends of the protective body 1 in the second direction, respectively, and is used to be sleeved on the pipe together with the protective body 1. The protective body 1 has a welding port communicating with the receiving groove at one end in the first direction.

[0033] In the technical solution of this utility model, when welding pipes made of special materials and requiring air isolation, the operator first places the protective body 1 tightly against the area to be welded on the pipe. At this time, the multiple fixing parts 11 provide a base for the pipe welding protective cover 100. Since the multiple connecting parts 12 are flexibly arranged, in order to ensure the protective body 1 is completely flush with the pipe, the multiple connecting parts 12 can deform in the circumferential direction of the pipe, so that the shape of the multiple protective bodies 1 conforms to the outer surface of the pipe, thereby completely covering the area to be welded. Afterwards, the operator then operates the... The locking structure 2, together with the protective body 1, is fitted onto the pipe, thus covering the weldable portion of the pipe with the protective body 1. The weldable portion aligns with the opening of the receiving groove. Then, the operator continuously supplies inert gas into the receiving groove through the air inlet. Under pressure, the air in the receiving groove exits through the air outlet until it is filled with inert gas. At this point, the operator can insert welding tools into the receiving groove through the welding port to weld the weldable portion of the pipe, ensuring welding quality. This design allows the pipe welding protective cover 100 to be used for welding pipes of various diameters. Operators no longer need to select different models of protective covers based on pipe diameter, reducing tool and storage costs for welding pipes made of special materials, and also alleviating the workload and reducing labor costs.

[0034] It is understood that in this utility model, the arrangement of multiple fixing parts 11 can not only ensure the contact strength between the protective body 1 and the pipe, but also maintain the shape of the protective body 1 when it is sleeved on the pipe together with the locking structure 2, so as to prevent the protective body 1 from being flattened under the action of external force, causing the receiving groove to deform in the first direction and affecting the normal progress of welding work.

[0035] Similarly, when the operator supplies inert gas into the accommodating tank through the air inlet, to prevent the inert gas from drifting out of the accommodating tank from the welding port, thus preventing the air in the accommodating tank from being completely exhausted, in a further embodiment of this utility model, the protective body 1 also includes a cover plate. The cover plate is detachably placed over the welding port. With this arrangement, when the operator supplies inert gas into the accommodating tank through the air inlet, the cover plate is placed over the welding port to seal the welding port and prevent the inert gas from flowing out of the welding port. When the air in the accommodating tank is exhausted and welding work needs to begin, the operator first removes the cover plate from the welding port to expose the welding port, and then inserts the welding tool into the accommodating tank through the welding port to perform the welding work.

[0036] It is understandable that during the welding process, inert gas needs to be continuously supplied from the inlet to the cavity to maintain the inert gas concentration in the cavity.

[0037] It should be noted that this utility model does not limit the specific structural form of the connecting part 12. In one embodiment of this utility model, the connecting part 12 can be configured as a corrugated pipe, which extends along the second direction and is connected to two adjacent fixing parts 11 at its two ends in the second direction. With this configuration, when the protective body 1 needs to adapt to the shape of the pipe, the folds at one end of the corrugated pipe in the first direction are compressed, and the folds at the other end are stretched, so as to realize the bending of the corrugated pipe around the circumference of the pipe, thereby enabling the protective body 1 to fit tightly against the pipe and realize the covering of the pipe to be welded.

[0038] Meanwhile, by setting the connecting part 12 as the corrugated pipe, the length of the protective body 1 in the second direction can be further adjusted to adapt to welding requirements of different lengths. Thus, when the welding requirement is large, multiple corrugated pipes extend along the second direction, thereby increasing the length of the protective body 1 in the second direction to cover a larger area to be welded; when the welding requirement is small, multiple corrugated pipes shorten along the second direction to reduce the length of the protective body 1 in the second direction, thereby enabling the protective body 1 to accurately cover the area to be welded, reducing the consumption of inert gas, and further facilitating operation by the operator.

[0039] In another embodiment of this utility model, the connecting part 12 can also be configured as a rubber strip. With this configuration, when the protective body 1 needs to adapt to the shape of the pipe, the rubber strip can undergo elastic deformation, so that the shape of the protective body 1 can fit the shape of the pipe, thereby achieving a tight fit between the protective body 1 and the pipe and covering the part of the pipe to be welded.

[0040] In other embodiments of this utility model, the specific structure of the connecting part 12 can also be set as a sealing membrane or other structural forms, which can be selected according to the requirements in actual setting.

[0041] Furthermore, it should be noted that when the protective body 1 deforms to conform to the shape of the pipe, in order to suppress the tendency of the connecting part 12 to return to a straight extension state during use and to ensure the fitting performance between the protective body 1 and the pipe, in a further embodiment of this utility model, each connecting part 12 is provided with at least one skeleton strip. The skeleton strip extends along a second direction and is designed to deform under external force. With this configuration, when the connecting part 12 deforms, the skeleton strip provided on each connecting part 12 can deform together with the connecting part 12. After the external force is removed, the skeleton strip will maintain its deformed shape. At this time, the skeleton strip can suppress the connecting part 12 from returning to a straight extension state, so that the corresponding connecting part 12 is always in a deformed state, thereby ensuring the fitting performance between the protective body 1 and the pipe.

[0042] Of course, this utility model does not limit the specific material of the skeleton strip. In one embodiment of this utility model, the skeleton strip can be made of metal; in another embodiment of this utility model, the skeleton strip can also be made of plastic; in other embodiments of this utility model, the material of the skeleton strip can also be other materials with plastic deformation properties and certain ductility properties. In actual setting, it can be selected according to the requirements.

[0043] Furthermore, to ensure that the locking structure 2 can be fitted onto pipes of multiple diameters with the protective body 1, in one embodiment of the present invention, the locking structure 2 includes two locking bands 21 and an adjusting part 22. One end of each of the two locking bands 21 is connected to both ends of the protective body 1 in a second direction. The adjusting part 22 is fixedly connected to one end of one of the locking bands 21 and is slidably connected to the other locking band 21. With this configuration, when it is necessary to fix the protective body 1 to the pipe, the adjusting part 22 first slides relative to the other locking band 21 to get closer to the other end of the locking band 21, increasing the distance between the adjusting part 22 and the protective body 1. After the two locking bands 21 are fitted onto the pipe, the adjusting part 22 slides in the opposite direction to get closer to the protective body 1. At this time, the locking ring formed by the adjusting part 22, the protective body 1, and the two locking bands 21 shrinks until it is fitted onto the pipe, thus completing the fixation of the pipe protective body 1 and enabling it to be fitted onto pipes of multiple diameters.

[0044] When inert gas is blown from the inlet to the welding point of the pipe, the flow rate of the inert gas needs to be reduced to ensure the welding quality. Therefore, in one embodiment of this utility model, the protective body 1 further includes an inlet pipe 13. The inlet pipe 13 extends along a first direction, with one end connected to the inlet and the other end bent towards a second direction to connect to the inert gas supply source. With this configuration, since one end of the inlet pipe 13 is bent towards the second direction, when the inert gas passes through the inlet pipe 13, it will impact the bend and slow down before entering the accommodating cavity through the inlet. Therefore, the inlet pipe 13 reduces the flow rate of the inert gas when it reaches the welding point of the pipe, thereby further improving the welding quality of the pipe.

[0045] Similarly, in another embodiment of this utility model, multiple air inlets can be provided, each located on a fixed part 11. By increasing the number of air inlets, when the total flow rate of inert gas entering the accommodating cavity per unit time is constant, the flow rate of inert gas in each air inlet decreases, i.e., the flow velocity of inert gas at each air inlet decreases. This also reduces the flow velocity of inert gas when it reaches the welding point of the pipe, thereby further improving the welding quality of the pipe.

[0046] Furthermore, in this invention, to facilitate operation of the pipe welding protective cover 100, in one embodiment, the pipe welding protective cover 100 further includes a gripping part 3. The gripping part 3 is disposed on one of the fixing parts 11 and is positioned to avoid the air outlet. The gripping part 3 is used for the operator to hold. With this arrangement, when the operator needs to ensure the protective body 1 is tightly fitted to the pipe, the operator can grip the gripping part 3 to pre-fit the protective body 1 onto the pipe, and then adjust the shape of the protective body 1 to achieve a tight fit between the protective body 1 and the pipe.

[0047] In a further embodiment of this utility model, multiple air inlets are provided, and the gripping part 3 is provided corresponding to one of the air inlets. The gripping part 3 is provided with a through hole that connects to the air inlet. This arrangement allows the through hole of the gripping part 3 to replace the air inlet pipe 13, reducing the number of air inlet pipes 13 when multiple air inlets are provided, improving the simplicity of the pipe welding protective cover 100. Furthermore, by increasing the number of air inlets, the flow rate at each air inlet is reduced, further decreasing the flow velocity of the inert gas at the air inlet, thereby further improving the welding quality of the pipe.

[0048] It should also be noted that, to ensure the complete removal of air from the pipeline and further guarantee the welding quality, the gas flow pattern at the welding point can be further optimized. In one embodiment of this invention, the pipeline welding protective cover 100 further includes a gas filter structure 4, which is disposed within the receiving groove and covers the air inlet. The gas filter structure 4 is used to manage the inert gas blown in from the air inlet. With this configuration, when the inert gas enters the receiving cavity from the air inlet, it first blows onto the gas filter structure 4. At this time, the gas filter structure 4 can manage the flow of the inert gas into a laminar flow. Then, the laminar inert gas flows to the welding point of the pipeline. At this time, the inert gas can gradually vent the air in the receiving cavity to prevent the turbulent inert gas from entraining harmful gases or air, which would affect the welding quality.

[0049] It is understood that this utility model does not limit the specific structural form of the air filtration structure 4. In one embodiment of this utility model, the air filtration structure 4 is set as a filter screen; in another embodiment of this utility model, the air filtration structure 4 can also be set as an air sieve plate; in yet another embodiment of this utility model, the air filtration structure 4 can also be composed of multiple layers of filter screens and air sieve plates; and in other embodiments of this utility model, the air filtration structure 4 can also be set as other structural forms. In actual setting, it can be selected according to the requirements.

[0050] Specifically, in this embodiment, the air filtration structure 4 is configured as a filter screen.

[0051] In a further embodiment of this utility model, the filter screen is made of copper and is a copper wire filter screen, so that the copper wire filter screen can deform together with the protective body 1.

[0052] Furthermore, when the protective body 1 comes into contact with the pipe, since the fixing part 11 cannot deform, the contact area between the fixing part 11 and the pipe will change with the change of the pipe diameter. At this time, it is easy to cause poor sealing and affect the welding quality. Therefore, in one embodiment of the present invention, the pipe welding protective cover 100 further includes a sealing ring 5. The sealing ring 5 is disposed on one side of the protective body 1 in the first direction and is elastically set. The sealing ring 5 is used to press against the pipe. With this configuration, when the pipe welding protective cover 100 needs to fit tightly against the pipe, the end of the sealing ring 5 closest to the pipe undergoes elastic deformation under the pressure applied by the pipe, allowing one end of the sealing ring 5 to conform to the shape of the pipe. The end of the sealing ring 5 closest to the fixing part 11 and the connecting part 12 undergoes elastic deformation under the pressure applied by the fixing part 11 and the connecting part 12, allowing the other end of the sealing ring 5 to conform to the shape of the fixing part 11 and the connecting part 12. In this way, the tight fit between the pipe welding protective cover 100 and the pipe can always be guaranteed, improving the sealing performance between them and thus ensuring the quality of pipe welding.

[0053] Furthermore, the sealing performance between the pipe welding protective cover 100 and the pipe can be further improved. In a further embodiment of this utility model, the pipe welding protective cover 100 also includes an auxiliary adhesive part, which is disposed in the peripheral area of ​​the protective body 1 to adhere the protective body 1 to the pipe. With this configuration, the auxiliary adhesive part can adhere the protective body 1 to the pipe, thereby further ensuring a tighter fit between the pipe welding protective cover 100 and the peripheral area of ​​the pipe contact surface, and further improving the sealing performance of the pipe welding protective cover 100.

[0054] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A pipe welding shield characterized by, include: The protective body has a recessed receiving groove at one end in a first direction. The protective body includes multiple fixing parts and connecting parts, which are staggered in a second direction. Each connecting part is flexibly configured. At least one fixing part has an air inlet, and at least one fixing part has an air outlet. The air inlet is used to allow inert gas to enter. A locking structure, wherein the two opposite ends of the locking structure are respectively connected to the two ends of the protective body in the second direction, so as to be sleeved on the pipe together with the protective body; The protective body has a welded joint at one end in the first direction that connects to the receiving groove.

2. The pipe welding boot of claim 1, wherein, Each of the connecting parts is provided with at least one skeleton strip, which extends along a second direction and is configured to deform under external force.

3. The pipe welding boot of claim 1, wherein, The protective body also includes an air inlet pipe, which extends along a first direction, with one end connected to the air inlet and the other end bent toward a second direction to connect to an inert gas supply source.

4. The pipe welding boot of claim 1, wherein, The locking structure includes: Two locking straps, one end of each locking strap being connected to both ends of the protective body in a second direction; and, The adjusting part is fixedly connected to one end of one of the locking bands and slidably connected to the other locking band.

5. The pipe welding boot of claim 1, wherein, The pipe welding protective cover also includes a gripping part, which is disposed on one of the fixed parts and is arranged to avoid the air outlet. The gripping part is used for the operator to hold.

6. The pipe welding boot of claim 5, wherein, The air inlet is provided in multiple ways, and the grip is provided corresponding to one of the air inlets. The grip is provided with a through hole that is connected to the air inlet.

7. The pipe welding boot of claim 1, wherein, The pipeline welding protective cover also includes a gas filter structure, which is located in the receiving groove and covers the air inlet. The gas filter structure is used to filter the inert gas blown in from the air inlet.

8. The pipe welding boot of claim 1, wherein, The air filtration structure includes a filter screen.

9. The pipe welding boot of claim 7, wherein, The pipe welding protective cover also includes a sealing ring, which is located on one side of the protective body in the first direction and is elastically set. The sealing ring is used to press against the pipe.

10. The pipe welding boot of claim 1, wherein, The pipe welding protective cover also includes an auxiliary bonding part, which is located in the peripheral area of ​​the protective body to bond the protective body to the pipe.

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