Energy-saving and heat-insulating device for heat treatment of steel pipe

Abstract

The utility model discloses an energy-saving and heat-insulating device for heat treatment of a steel pipe, which relates to the technical field of auxiliary equipment for quenching and tempering of a welding seam and comprises a box body and a quenching and tempering device, the box body comprises a first box body and a second box body, clamping grooves matched with the outer diameter of a pipeline are formed in the middle of the first box body and the middle of the second box body, the hardening and tempering device comprises a clamping block, an air cooling device and a water cooling device, and the air cooling device and the water cooling device are both used for cooling the clamping block; the clamping blocks comprise the first clamping block and the second clamping block, the lower end of the first clamping block is hinged to the bottom of the first box body, the lower end of the second clamping block is hinged to the bottom of the second box body, and a pipeline clamping part is defined by the middles of the first clamping block and the second clamping block and located on the same straight line as the circle center of the clamping groove. A pressing and fixing clamp is further arranged between the first clamping block and the second clamping block. Therefore, through the arrangement of the first clamping block and the second clamping block, heat preservation of a welding seam is achieved, meanwhile, rapid cooling can be achieved, and the welding quality of the welding seam is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of weld quenching and tempering treatment auxiliary equipment, in particular to a steel pipe heat treatment energy-saving and heat-insulating device. Background Art

[0002] The most secure way to fix pipes is still welding. Welding is a process that uses high temperature to melt materials and make them bonded. Due to the extremely high temperature during welding, the welds are prone to defects due to the influence of heat and stress. In addition to weld cracking, there are also deformations. In order to ensure the quality of the weld, a heat treatment process can be used after welding. The heat treatment process generally includes quenching, tempering, and quenching and tempering to improve or eliminate metal stress.

[0003] There are many ways to perform quenching and tempering. The most common method is to maintain the temperature of the weld for a certain period of time, slowly cool it down to room temperature, and then cool it quickly. Since the cooling temperature and cooling time are difficult to control, in actual operation, there will always be a situation where the welding quality is fine, but cracks appear after cooling. For example, for aluminum alloy pipes, there are strict requirements for the quenching and tempering of aluminum alloys. If the temperature drops too quickly during cooling, thermal cracks will appear, affecting the quality of the workpiece.

[0004] In the prior art, there is a patent document with publication number 208575415U, entitled a rapid cooling device for pipe welding seams. In the document, a fan and other equipment are added to the protective housing to improve the air circulation efficiency, so as to achieve the purpose of rapid cooling. The device is generally suitable for materials (such as cast iron, etc.) that are naturally cooled by flowing air. It is impossible to achieve rapid cooling after heat preservation, and it is also impossible to recycle air. The cooling effect is greatly affected by the external temperature. If the material is aluminum alloy, the weld crack defect is prone to occur. Utility Model Content

[0005] In order to overcome the above-mentioned defects, the purpose of the utility model is to provide an energy-saving and heat-insulating device for heat treatment of steel pipes, which can achieve heat insulation of the weld while achieving rapid cooling to ensure the welding quality of the weld by setting a first clamping block and a second clamping block.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a steel pipe heat treatment energy-saving and heat-preserving device, including a box body and a tempering device; the box body includes a first box body and a second box body, the middle parts of the first box body and the second box body are provided with a card slot adapted to the outer diameter of the pipeline, the first box body and the second box body are clamped together by a fixed bolt lock, after the fixed bolt lock is fastened, the inner walls of the two card slots respectively located in the first box body and the second box body are both in contact with the outer wall of the pipeline; the tempering device includes a clamping block, an air-cooling cooling device and a water-cooling cooling device, the air-cooling device and the water-cooling cooling device are both used to cool the clamping block; the clamping block includes a first clamping block and a second clamping block, the lower end of the first clamping block is hinged to the bottom of the first box body, the lower end of the second clamping block is hinged to the bottom of the second box body, the middle parts of the first clamping block and the second clamping block are surrounded to form a pipeline clamping part, the pipeline clamping part and the center of the card slot are located on the same straight line, and a clamping and fixing clamp is also provided between the first clamping block and the second clamping block.

[0007] Preferably, the air-cooling device comprises a blower, and the blower comprises fan blades and a motor. There are two blowers, which are respectively embedded in the first housing and the second housing, and the two blowers rotate in opposite directions.

[0008] Preferably, the water cooling device comprises a water tank, a water pump and a shower pipe connected to the water pump, and the water outlet direction of the nozzle of the shower pipe is toward the clamping block.

[0009] Preferably, the first clamping block and the second clamping block are both made of copper, and copper sheets extending to the water tank are provided on both sides of the first clamping block and the second clamping block.

[0010] Preferably, the fixed bolt lock comprises a position-adapted groove portion and a push rod connecting portion, the groove portion is fixedly connected to the inner wall of the first box body, and the push rod connecting portion is fixedly connected to the inner wall of the second box body.

[0011] Preferably, the side walls of the first box body and the second box body are provided with limiting grooves, and a sealing cover plate slides in the limiting grooves.

[0012] After adopting the above technical solution, the beneficial technical effects achieved by the utility model are:

[0013] 1. The heat treatment process after the steel pipe is welded can adopt the utility model, the first box body and the second box body are connected together, the weld is surrounded by the first clamp block and the second clamp block to achieve heat preservation treatment, after a period of heat preservation, the weld is quickly cooled by an air cooling device or a water cooling device, so that the temperature of the weld of the steel pipe can be sharply reduced, thereby ensuring the quality of the weld, especially in areas with great temperature differences, it is easier to eliminate the stress in the pipeline during welding.

[0014] 2. Since metallic copper is used as the heat transfer medium, and a blower and a shower pipe are set up to cool the copper sheet, the heat is almost entirely transferred by the copper sheet during cooling, the cooling time will be appropriately extended, and the cooling process will be gentler, which can avoid cracking caused by direct contact between cold air or cold water and the weld, and is especially suitable for aluminum alloy pipe fittings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of an embodiment of the utility model steel pipe heat treatment energy-saving and heat preservation device;

[0016] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0017] In the figure, 1, box body; 11, first box body; 12, second box body; 13, slot; 14, fixed latch; 141, groove portion; 142, top rod connecting portion; 15, limit groove; 16, sealing cover plate;

[0018] 2. Tempering device; 21. First clamping block; 22. Second clamping block; 23. Blower; 24. Copper sheet; 25. Water tank; 26. Sprinkler pipe; 27. Water pump. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0020] See also Figure 1-Figure 2The utility model provides a steel pipe heat treatment energy-saving and heat-insulating device, comprising a box 1 and a quenching and tempering device 2; the box 1 comprises a first box 11 and a second box 12, the middle of the first box 11 and the second box 12 is provided with a slot 13 adapted to the outer diameter of the pipe, the first box 11 and the second box 12 are connected by a fixed bolt 14, after the fixed bolt 14 is fastened, the inner walls of the two slots 13 respectively located in the first box 11 and the second box 12 are both in contact with the outer wall of the pipe; the workpiece of the pipe is generally relatively large, and the first box 11 and the second box 12 can be disassembled and directly connected to the weld after welding. The fixed bolt 14 is a prior art, which is used to align and connect the first box 11 and the second box 12. After the first box 11 and the second box 12 are connected, the middle space can be used to insulate the weld. In order to ensure direct contact with the weld during the rapid cooling process, a clamping block is also provided in the middle cavity of the first box 11 and the second box 12. The clamp block is composed of a first clamp block 21 and a second clamp block 22. After the first box body 11 and the second box body 12 are abutted, the first clamp block 21 and the second clamp block 22 are respectively brought together, so that the first clamp block 21 and the second clamp block 22 can achieve heat insulation of the weld. In actual use, there is also a clamp between the first clamp block 21 and the second clamp block 22.

[0021] The air-cooling device and the water-cooling device are both used to cool the clamping block; after keeping it warm for a period of time, the temperature is lowered. Depending on the material, the cooling method can be air-cooling or water-cooling. The air-cooling time is relatively long. Turn on the blower 23. The two blowers 23 rotate in opposite directions, one for air intake and the other for air discharge. During the air circulation process, the temperature of the first clamping block 21 and the second clamping block 22 will drop rapidly. The water-cooling device has a faster cooling speed. Due to the rapid cooling, the hardness of the material will be higher, which is suitable for welds that almost no longer require reprocessing in the later stage.

[0022] The water cooling device of the utility model comprises a water tank 25, a water pump 27 and a shower pipe 26 connected to the water pump 27, and the water outlet direction of the water nozzle of the shower pipe 26 is toward the clamping block. The water tank 25 is used to place the water source, and the water pump 27 provides power to spray water from the shower pipe 26 to the surface of the clamping block and the copper sheet 24 to achieve continuous cooling. A connector can be added between the pipes in the first box body 11 and the second box body 12, so that after docking, the two shower pipes 26 are connected in series and driven by one water pump 27.

[0023] The first clamp block 21 and the second clamp block 22 of the utility model are both made of copper, and copper sheets 24 extending to the water tank 25 are also provided on both sides of the first clamp block 21 and the second clamp block 22. Metallic copper is a thermally conductive material with extremely low cost at present, and is widely used in the field of radiators. Air cooling and water cooling are both to dissipate heat to the copper sheet 24 and the clamp blocks connecting the copper sheet 24. Since water has a strong heat absorption capacity, the overall temperature of the water tank 25 will be relatively low. After the copper sheet 24 is attached to the water tank 25, the blower 23 can be used to quickly discharge the heat from the copper sheet 24. This working principle is widely used in the CPU heat dissipation of computers. In addition to water, the medium sprayed out of the shower pipe 26 can also be oil, and the principle is basically the same as that of water.

[0024] The fixed bolt lock 14 of the utility model includes a groove portion 141 and a top rod connecting portion 142 with matching positions. The groove portion 141 is fixedly connected to the inner wall of the first box body 11, and the top rod connecting portion 142 is fixedly connected to the inner wall of the second box body 12. A groove is provided in the middle of the groove portion 141. After the top rod connecting portion 142 is placed in the groove, it can be snapped in. In practice, in addition to using the fixed bolt lock 14, fastening can also be achieved by directly using a connector such as a buckle.

[0025] The side walls of the first box body 11 and the second box body 12 of the utility model are provided with a limiting groove 15, and a sealing cover plate 16 is slidably arranged in the limiting groove 15. The sealing cover plate 16 has two functions, one is to seal, reduce air circulation, and enhance heat preservation, and the other function is to clamp and fix the first box body 11 and the second box body 12, increase stability and rigidity of the equipment, and prevent movement.

[0026] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field can make various corresponding changes and deformations based on the present invention, but these corresponding changes and deformations should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A steel pipe heat treatment energy-saving and heat preservation device, characterized in that: It includes a box body and a quenching and tempering device; The box body comprises a first box body and a second box body, wherein a card slot adapted to the outer diameter of the pipeline is provided in the middle of the first box body and the second box body, and the first box body and the second box body are connected by a fixed bolt lock, and after the fixed bolt lock is fastened, the inner walls of the two card slots respectively located in the first box body and the second box body are both in contact with the outer wall of the pipeline; The quenching and tempering device comprises a clamping block, an air cooling device and a water cooling device, and the air cooling device and the water cooling device are both used to cool the clamping block; The clamp block includes a first clamp block and a second clamp block, the lower end of the first clamp block is hinged to the bottom of the first box body, the lower end of the second clamp block is hinged to the bottom of the second box body, the middle parts of the first clamp block and the second clamp block are connected to form a pipeline clamping part, the pipeline clamping part and the center of the groove are located on the same straight line, and a clamping and fixing clamp is also provided between the first clamp block and the second clamp block.

2. The steel pipe heat treatment energy-saving and heat-insulating device according to claim 1 is characterized in that: The air-cooling device comprises a blower, and the blower comprises a fan blade and a motor. There are two blowers, which are respectively embedded in the first housing and the second housing, and the two blowers rotate in opposite directions.

3. The steel pipe heat treatment energy-saving and heat-insulating device according to claim 2 is characterized in that: The water cooling device comprises a water tank, a water pump and a shower pipe connected to the water pump, and the water outlet direction of the water nozzle of the shower pipe is toward the clamping block.

4. The steel pipe heat treatment energy-saving and heat-insulating device according to claim 3 is characterized in that: The first clamping block and the second clamping block are both made of copper, and copper sheets extending to the water tank are provided on both sides of the first clamping block and the second clamping block.

5. The steel pipe heat treatment energy-saving and heat-insulating device according to claim 4 is characterized in that: The fixed bolt lock comprises a groove portion and a push rod connecting portion which are adapted in position, wherein the groove portion is fixedly connected to the inner wall of the first box body, and the push rod connecting portion is fixedly connected to the inner wall of the second box body.

6. The steel pipe heat treatment energy-saving and heat-insulating device according to claim 5, characterized in that: The side walls of the first box body and the second box body are provided with limiting grooves, and a sealing cover plate is slidably disposed in the limiting grooves.

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