A small-diameter tube welding and slow cooling cover

Abstract

This utility model discloses a slow-cooling cover for welding small-diameter pipes, relating to the field of welding technology. It includes a base, with a fixing mechanism and a heat-insulating mechanism on the top surface of the base. The heat-insulating mechanism includes a heat-insulating shell, which is rotatably connected to the base via a hinge. A heating chamber is fixedly connected to the inner surface of the heat-insulating shell, and heat-insulating plates are fixedly connected to both ends of the heat-insulating shell. A heating pipe is fixedly connected inside the heating chamber, and a filling pipe is fixedly connected to the inner surface of the outer surface of the heating chamber. This utility model seals the welded small-diameter pipe using the heat-insulating shell and heat-insulating plates. The heating pipe heats the water inside the heating chamber. A water pump draws water out of the heating chamber and re-introduces it into the heating chamber through a pipe, facilitating uniform heating of the water in the heating chamber. Heating the water in the heating chamber increases the temperature inside the heat-insulating shell, which then slowly decreases, improving the welding quality of the small-diameter pipe.

Description

Technical Field

[0001] This utility model relates to the field of welding technology, specifically to a slow-cooling cover for welding small-diameter pipes. Background Technology

[0002] During the welding process, residual stress will inevitably be generated in the workpiece, causing deformation and affecting normal use. Preheating before welding and slow cooling after welding can reduce the temperature difference between the welding area and the workpiece being welded. This can reduce welding stress and welding strain rate, and ultimately avoid workpiece deformation and welding cracks.

[0003] Most existing slow-cooling equipment for small-diameter pipe welding uses a nozzle connected to natural gas inside the slow-cooling hood. The nozzle emits a flame to heat and slow-cool the welded small-diameter pipe. However, when the existing slow-cooling equipment for small-diameter pipe slow-cools the welded small-diameter pipe, the flame temperature emitted by the nozzle is relatively high, and the temperature value inside the slow-cooling hood varies greatly, which affects the welding quality of the small-diameter pipe. Utility Model Content

[0004] The purpose of this invention is to provide a slow-cooling cover for welding small-diameter pipes, so as to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A slow-cooling cover for welding small-diameter pipes includes a base, and the top surface of the base is provided with a fixing mechanism and a heat preservation mechanism.

[0007] The heat preservation mechanism includes a heat preservation shell, which is rotatably connected to the base via a hinge. A heating box is fixedly connected to the inner surface of the heat preservation shell, and heat preservation plates are fixedly connected to both ends of the heat preservation shell.

[0008] A heating tube is fixedly connected inside the heating box, a filling tube is fixedly connected inside the outer surface of the heating box, and a safety valve is threadedly connected inside the outer surface of the heating box.

[0009] A water pump is fixedly connected to the side of one of the insulation boards. Both the input and output ends of the water pump are fixedly connected to pipes, and one end of the pipes is fixedly connected to the heating box.

[0010] A further improvement of this utility model is that: the outer surface of the heat insulation shell is provided with two through holes, which are respectively connected to the filling pipe and the safety valve.

[0011] A further improvement of this utility model is that: an arc-shaped groove is provided on the side of the insulation board, a slide rail is fixedly connected to the side of the insulation board, and a sealing plate is slidably connected to the outer surface of the slide rail.

[0012] A further improvement of the present invention is that the fixing mechanism includes a support plate, the support plate is fixedly connected to the top surface of the base, a sliding rod is fixedly connected to the side of the support plate, and a slider is slidably connected to the outer surface of the sliding rod. The number of the support plate, the sliding rod, and the slider are all two.

[0013] The top surface of the slider is fixedly connected to a platform, and a groove is formed on the top surface of the slider. A double-ended screw is rotatably connected inside the groove, and two clamping blocks are slidably connected inside the groove. The double-ended screw is threadedly connected to the clamping blocks.

[0014] A further improvement of this utility model is that one end of the double-ended screw rotates through the side of the slider and extends outward, and a screw cap is fixedly connected to the extended end of the double-ended screw.

[0015] A further improvement of this utility model is that: an ear plate is fixedly connected to the side of the slider, a bolt is threaded inside the ear plate, and a rubber sheet is rotatably connected to the bottom end of the bolt.

[0016] A further improvement of the present invention is that: a welding slag groove is provided on the top surface of the base, and a pull groove is provided on the side of the base. The pull groove and the welding slag groove are interconnected, and a collection box is slidably connected inside the pull groove and the welding slag groove.

[0017] Rollers are fixedly connected to both sides of the bottom surface of the base.

[0018] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0019] 1. This utility model provides a slow-cooling cover for welding small-diameter pipes. The welded small-diameter pipes are sealed by an insulation shell and an insulation plate. A heating pipe heats the water inside the heating chamber. A water pump draws water out of the heating chamber through a pipeline and re-introduces it into the heating chamber, which facilitates uniform heating of the water in the heating chamber by the heating pipe. After the water in the heating chamber is heated, the temperature inside the insulation shell can be increased. The temperature inside the insulation shell decreases slowly, which helps to improve the welding quality of the small-diameter pipes.

[0020] 2. This utility model provides a slow cooling cover for welding small-diameter pipes. The small-diameter pipe is supported by a platform. Rotating the screw cap drives the double-headed screw to rotate. The double-headed screw drives two clamping blocks to move synchronously to clamp and fix the small-diameter pipe. The sliding rod and the slider are connected to facilitate the adjustment of the position of the small-diameter pipe, making it convenient for operators to weld the small-diameter pipe. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of the base structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the fixing mechanism structure of this utility model;

[0024] Figure 4 This is a partial structural diagram of the fixing mechanism of this utility model;

[0025] Figure 5 This is a cross-sectional view of the thermal insulation shell of this utility model.

[0026] Figure 6 This is a schematic diagram of the insulation board structure of this utility model.

[0027] In the picture:

[0028] 1. Base; 101. Welding slag tank; 102. Collection box; 103. Rollers;

[0029] 2. Fixing mechanism; 201. Support plate; 202. Slide rod; 203. Slider; 204. Display platform; 205. Double-ended screw; 206. Clamping block; 207. Screw cap; 208. Bolt;

[0030] 3. Insulation mechanism; 301. Insulation shell; 302. Heating box; 303. Insulation board; 304. Heating tube; 305. Filling pipe; 306. Safety valve; 307. Water pump; 308. Sealing plate. Detailed Implementation

[0031] The present invention will be further described in detail below with reference to embodiments:

[0032] Example 1

[0033] like Figure 1-6As shown, this utility model provides a slow cooling cover for welding small-diameter pipes, including a base 1. A fixing mechanism 2 and a heat insulation mechanism 3 are provided on the top surface of the base 1. The heat insulation mechanism 3 includes a heat insulation shell 301, which is rotatably connected to the base 1 via a hinge. A heating box 302 is fixedly connected to the inner surface of the heat insulation shell 301. Heat insulation plates 303 are fixedly connected to both ends of the heat insulation shell 301. A heating pipe 304 is fixedly connected inside the heating box 302, and a filling pipe 305 is fixedly connected to the inner surface of the outer surface of the heating box 302. The outer surface of the insulation shell 301 is internally threaded with a safety valve 306. A water pump 307 is fixedly connected to the side of an insulation plate 303. The input and output ends of the water pump 307 are both fixedly connected with pipes. One end of the pipe is fixedly connected to the heating box 302. The outer surface of the insulation shell 301 has two through holes, which are respectively matched with the filling pipe 305 and the safety valve 306. The side of the insulation plate 303 has an arc-shaped groove. A slide rail is fixedly connected to the side of the insulation plate 303. A sealing plate 308 is slidably connected to the outer surface of the slide rail.

[0034] In this embodiment, after the small-diameter pipe is welded, the insulation shell 301 is pulled to rotate and fit against the base 1. The insulation shell 301 and the insulation plate 303 seal the welded small-diameter pipe. A control panel is fixedly connected to the outer surface of the insulation shell 301. The control panel is electrically connected to an external power supply, a heating tube 304, and a water pump 307. The heating tube 304 and the water pump 307 are started through the control panel. The heating tube 304 heats the water inside the heating chamber 302. The water pump 307 draws water out of the heating chamber 302 through a pipe and re-introduces it into the heating chamber 302, so that the heating tube 304 can heat the water in the heating chamber 302 evenly. The filling pipe 305 is connected to the heating chamber 302, which is convenient for the operator to operate the heating chamber 302. The internal water level can be increased or decreased. One end of the filling pipe 305 is threaded with a sealing cap to prevent water from overflowing from the heating box 302. When the heating pipe 304 heats the water in the heating box 302, the heating temperature can be controlled through the control panel. The safety valve 306 is connected to the heating box 302 to prevent the pressure in the heating box 302 from exceeding the safety threshold, thus improving the safety of the insulation device. After the water in the heating box 302 is heated, it can increase the internal temperature of the insulation shell 301. The internal temperature of the insulation shell 301 decreases slowly, which facilitates the improvement of the welding quality of small-diameter pipes. The water in the heating box 302 can be replaced with heat transfer oil or other heat transfer media. At the same time, the water pump 307 can be replaced with a heat transfer oil pump, thereby improving the adaptability of the insulation device.

[0035] If the length of the small-diameter pipe is relatively long, after the small-diameter pipe is welded, the sealing plate 308 is pulled to slide along the slide rail. The sealing plate 308 cancels the sealing of the arc groove. When the heat insulation shell 301 is attached to the base 1, the small-diameter pipe is located inside the arc groove. The sealing plate 308 is pulled to slide along the slide rail, and the sealing plate 308 partially seals the arc groove, reducing the heat overflow rate in the heat insulation shell 301 and improving the welding quality of the small-diameter pipe.

[0036] Example 2

[0037] like Figure 1-6 As shown, based on Embodiment 1, this utility model provides a technical solution: Preferably, the fixing mechanism 2 includes a support plate 201, which is fixedly connected to the top surface of the base 1. A sliding rod 202 is fixedly connected to the side of the support plate 201, and a slider 203 is slidably connected to the outer surface of the sliding rod 202. There are two support plates 201, two sliding rods 202, and two sliders 203. A platform 204 is fixedly connected to the top surface of the slider 203, and a groove is formed on the top surface of the slider 203. The internal rotating connection is a double-ended screw 205, and the internal sliding connection is a clamping block 206. There are two clamping blocks 206. The double-ended screw 205 is threadedly connected to the clamping block 206. One end of the double-ended screw 205 rotates through the side of the slider 203 and extends outward. The extended end of the double-ended screw 205 is fixedly connected to a screw cap 207. The side of the slider 203 is fixedly connected to an ear plate. The internal thread of the ear plate is connected to a bolt 208. The bottom end of the bolt 208 is rotatably connected to a rubber sheet.

[0038] In this embodiment, when welding the small-diameter pipe, the small-diameter pipe is placed on the platform 204. The rotating cap 207 drives the double-ended screw 205 to rotate. The double-ended screw 205 drives the two clamping blocks 206 to move synchronously to clamp and fix the small-diameter pipe. After the small-diameter pipe is clamped and fixed, the slider 203 is pulled to move the two small-diameter pipes closer to each other. The two sliding rods 202 are connected to the slider 203 to improve the movement stability of the slider 203. When the welding ends of the two small-diameter pipes reach the appropriate position, the bolt 208 is rotated. The bottom end of the bolt 208 is connected to a rubber sheet. When the bolt 208 rotates, it drives the rubber sheet to fit against the sliding rod 202, thereby fixing the position of the slider 203, which makes it easier for the operator to weld the small-diameter pipe.

[0039] Example 3

[0040] like Figure 1-6 As shown, based on Embodiment 1, this utility model provides a technical solution: preferably, a welding slag groove 101 is provided on the top surface of the base 1, a pull groove is provided on the side of the base 1, the pull groove and the welding slag groove 101 are interconnected, a collection box 102 is slidably connected to the pull groove and the welding slag groove 101, and rollers 103 are fixedly connected to both sides of the bottom surface of the base 1.

[0041] In this embodiment, four rollers 103 are connected to the base 1 to facilitate the movement and transportation of the base 1 by the operator. The base 1 is connected to the collection box 102 through the slag groove 101 and the pull groove. The collection box 102 can collect the slag generated during the welding of small diameter pipes. After the welding work is completed, the collection box 102 is pulled out from the slag groove 101 and the pull groove, so that the operator can centrally process the slag in the collection box 102.

[0042] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A slow-cooling cover for welding small-diameter pipes, comprising a base (1), characterized in that: The top surface of the base (1) is provided with a fixing mechanism (2) and a heat preservation mechanism (3); The heat preservation mechanism (3) includes a heat preservation shell (301), which is rotatably connected to the base (1) via a hinge. A heating box (302) is fixedly connected to the inner surface of the heat preservation shell (301), and heat preservation plates (303) are fixedly connected to both ends of the heat preservation shell (301). A heating tube (304) is fixedly connected inside the heating box (302), a filling tube (305) is fixedly connected inside the outer surface of the heating box (302), and a safety valve (306) is threadedly connected inside the outer surface of the heating box (302). A water pump (307) is fixedly connected to the side of one of the insulation boards (303). The input and output ends of the water pump (307) are both fixedly connected to pipes, and one end of the pipes is fixedly connected to the heating box (302).

2. The slow-cooling cover for welding small-diameter pipes according to claim 1, characterized in that: The outer surface of the insulation shell (301) is provided with two through holes, which are respectively connected to the filling pipe (305) and the safety valve (306).

3. The slow-cooling cover for welding small-diameter pipes according to claim 1, characterized in that: The insulation board (303) has an arc-shaped groove on its side, and a slide rail is fixedly connected to the side of the insulation board (303). A sealing plate (308) is slidably connected to the outer surface of the slide rail.

4. The slow-cooling cover for welding small-diameter pipes according to claim 1, characterized in that: The fixing mechanism (2) includes a support plate (201), which is fixedly connected to the top surface of the base (1). A slide rod (202) is fixedly connected to the side of the support plate (201), and a slider (203) is slidably connected to the outer surface of the slide rod (202). There are two of each of the support plate (201), slide rod (202), and slider (203). The top surface of the slider (203) is fixedly connected to a platform (204). The top surface of the slider (203) is provided with a groove. A double-ended screw (205) is rotatably connected inside the groove. A clamping block (206) is slidably connected inside the groove. There are two clamping blocks (206). The double-ended screw (205) is threadedly connected to the clamping block (206).

5. A slow-cooling cover for welding small-diameter pipes according to claim 4, characterized in that: One end of the double-ended screw (205) rotates through the side of the slider (203) and extends outward, and a screw cap (207) is fixedly connected to the extended end of the double-ended screw (205).

6. A slow-cooling cover for welding small-diameter pipes according to claim 4, characterized in that: The slider (203) is fixedly connected to the side of the ear plate, and the ear plate is internally threaded with a bolt (208). The bottom end of the bolt (208) is rotatably connected with a rubber sheet.

7. A slow-cooling cover for welding small-diameter pipes according to claim 1, characterized in that: The top surface of the base (1) is provided with a slag groove (101), and the side surface of the base (1) is provided with a pull groove. The pull groove is interconnected with the inside of the slag groove (101), and a collection box (102) is slidably connected to the inside of the pull groove and the inside of the slag groove (101). Rollers (103) are fixedly connected to both sides of the bottom surface of the base (1).

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