Annealing device for seamless tube
By designing a small high-temperature resistant conduit and spiral heater, combined with a ventilator and feeding mechanism, the problems of high equipment costs and uneven heat source distribution in the prior art are solved, and uniform heating and efficient annealing of seamless pipes are achieved. It reduces the amount of rare gas and is suitable for small and medium-sized workshops.
Patent Information
- Application Number
- CN202420924456.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-29
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-04-29
AI Technical Summary
The existing seamless pipe annealing device has high cost and large floor area, which leads to uneven distribution of heat sources, affects production quality, and the use of rare gases is large, external air is easy to enter, causing oxidation, and affects the annealing effect.
An annealing device including a box, a conduit, a heater and a feeding mechanism is designed. The conduit is a high-temperature resistant material. The spiral heater is placed outside the conduit. The ventilation pipe is used for the inlet of rare gas and the discharge of oxygen. The feeding mechanism ensures that there is no The seam pipe enters the conduit evenly, and the box acts as heat preservation and positioning to reduce the entry of external air.
It realizes uniform heating of seamless pipes, reduces the amount of rare gas, improves energy utilization efficiency and annealing effect, and is suitable for small and medium-sized workshops, and reduces production costs.
Smart Images
Figure CN222205348U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of machinery and relates to an annealing device for seamless pipes. Background Art
[0002] With the development of the mechanical age, people have diversified their requirements for the seamless pipes they use. Annealing is one of the steps that seamless pipes go through to meet people's needs. The annealing device refers to raising the temperature to the required temperature in a relatively closed space and protective atmosphere, heating and annealing the seamless pipe to soften the hardness of the seamless pipe, increase the stress on the surface of the seamless pipe, and then slowly cool the seamless pipe to prevent decarburization on the surface of the seamless pipe and avoid oxidation on the surface of the seamless pipe, thereby obtaining seamless pipes with stable properties, high precision and bright surface to meet people's needs.
[0003] Most of the existing annealing devices use trolley-type annealing furnaces or box-type annealing furnaces. These furnaces have large furnace bodies, large floor space, and high equipment costs, so they have high requirements for production workshops. The heat source is usually located at the top or side of the furnace body. The bottom of the seamless pipe in the furnace body is difficult to heat, resulting in uneven heating of the seamless pipe and uneven hardness of the seamless pipe after annealing, which affects the production quality. Rare gas needs to be continuously input into the furnace body to discharge the oxygen in the furnace body to form a protective atmosphere. The furnace body is large, which makes the amount of rare gas used high, increasing the production cost. The inlet and outlet of the furnace body are also large, and external air is easy to enter the furnace body from the inlet and outlet. The surface of the seamless pipe is easy to oxidize, affecting the annealing effect and production quality. Summary of the invention
[0004] The utility model aims to provide an annealing device for seamless pipes with good annealing effect and high economic benefit in view of the above problems existing in the prior art.
[0005] The purpose of the utility model can be achieved through the following technical solutions:
[0006] A seamless pipe annealing device comprises a box body, the interior of which is a cavity, and is characterized in that it also comprises a conduit, a heater and a feeding mechanism, wherein the conduit is arranged in the box body, the conduit is fixedly connected to the box body and the two ends of the conduit pass through the two sides of the box body, the heater is spirally shaped, the heater is sleeved on the outside of the conduit and the two ends of the heater extend out of the box body, the feeding mechanism is arranged on both sides of the box body and the middle part of the feeding mechanism passes through the conduit, the feeding mechanism can feed the seamless pipe into one end of the conduit and out from the other end of the conduit, and the conduit is also provided with a vent pipe, the inner end of the vent pipe is connected with the inner cavity of the conduit and the outer end of the vent pipe extends out of the box body.
[0007] The annealing device of the seamless pipe is used for heating and annealing the seamless pipe. The box, the conduit and the vent pipe are all made of high temperature resistant materials. The conduit serves as a reaction chamber for heating and annealing the seamless pipe. The heater is spirally sleeved on the outside of the conduit. Both ends of the heater extend out of the box for connection with an external controller. The heat source generated by the operation of the heater can act evenly on the conduit, so that all surfaces of the seamless pipe entering the conduit can be heated evenly, and the annealing effect is better. The conduit is penetrated in the box, and the box plays a role of heat preservation, so that the heat source generated by the heater is not easy to dissipate, thereby improving the energy utilization efficiency. A vent pipe is arranged on the conduit for passing rare gas into the conduit from the outside. The continuously introduced rare gas squeezes out the oxygen in the conduit, so that the seamless pipe is annealed under a protective atmosphere. The volume in the conduit is small, and the amount of rare gas used is small, which reduces the production cost and thus has economic benefits.
[0008] The feeding mechanism is used to transport seamless pipes. The staff installs the seamless pipes to be annealed on the feeding mechanism. The feeding mechanism can feed the seamless pipes from one end of the conduit into the conduit for annealing and heating, and feed them out from the other end of the conduit after annealing. In the process of feeding, the seamless pipes can be kept coaxial with the conduit, so that the seamless pipes can enter the conduit accurately.
[0009] In the above-mentioned annealing device for seamless pipes, both ends of the box body have through holes matching the conduit, and both ends of the conduit are penetrated through the through holes and are fixedly connected.
[0010] The through hole is used to connect the conduit, and both ends of the conduit are fixedly connected at the through hole, so that the conduit is stably positioned in the box, and a closed space is formed between the inside of the box and the outside of the conduit to play a role in heat preservation, so that the heat source generated by the heater is not easy to dissipate, thereby improving the heating efficiency and achieving better annealing effect.
[0011] In the above-mentioned annealing device for seamless pipes, the diameters of the two ends of the pipe are smaller than the diameter of the middle part of the pipe, and there is a smoothly transitioning portion between the two ends of the pipe and the middle part of the pipe.
[0012] The diameters at both ends of the conduit are smaller than the diameter in the middle of the conduit. The two ends of the conduit are just large enough for the seamless pipe to pass through, while the middle of the conduit provides space for both the seamless pipe and the rare gas. After the rare gas continues to flow into the conduit, the oxygen in the conduit is squeezed out from both ends of the conduit by the rare gas. In addition, since the diameters at both ends of the conduit are small, it is not easy for external air to enter from both ends of the conduit, which enables the seamless pipe to be annealed under the protective atmosphere in the conduit. The annealing effect is better and the surface of the seamless pipe is not easy to oxidize.
[0013] In the above-mentioned annealing device for seamless pipes, the heater matches the middle part of the conduit, the middle part of the conduit is penetrated in the heater, and both ends of the heater extend out of the box body from the upper part of the box body.
[0014] The heater matches the middle part of the conduit. After the seamless pipe is fed into the conduit, the annealing and heating process is mainly carried out in the middle part of the conduit. The middle part of the conduit is penetrated by the spiral heater, so that the seamless pipe in the conduit can be heated evenly in the circumference. According to actual conditions, the heater is an electric heater or an electromagnetic heater. Both ends of the heater extend from the upper part of the box body to be connected with an external controller. The external controller can also be fixedly connected to the upper part of the box body to make the overall structure more compact.
[0015] In the above-mentioned seamless pipe annealing device, the feeding mechanism includes capstan one, capstan two and a plug. Capstan one and capstan two are respectively arranged on both sides of the box where the two ends of the conduit are located. A rope is wound on capstan one and capstan two. The plug is arranged coaxially with the conduit and the plug can pass through the conduit. The outer end of the plug is detachably connected to the rope on capstan one, and the inner end of the plug is detachably connected to the rope on capstan two.
[0016] Capstan 1 and capstan 2 play a traction role, and the plug plays a role in positioning the seamless pipe. The noose on capstan 1 and capstan 2 are detachably connected to the plug to facilitate the loading and unloading of the seamless pipe. The seamless pipe is sleeved on the noose of capstan 2 and interlocked with the plug, and then the seamless pipe is driven to move toward the conduit under the traction of capstan 2. During the transportation process, the noose on capstan 1 and capstan 2 is always kept taut to ensure that the seamless pipe can accurately enter the conduit for annealing. After the annealed seamless pipe is sent out of the conduit and cooled, the seamless pipe can also be unloaded by removing the plug.
[0017] In the above-mentioned annealing device for seamless pipes, the outer end diameter of the plug matches the inner end diameter of the pipe end, and the inner end diameter of the plug is smaller than the outer end diameter of the plug.
[0018] The inner end of the plug matches the inner diameter of the seamless pipe. The inner end of the plug can be embedded from one end of the seamless pipe until the outer end of the plug and the seamless pipe are against each other. The inner end of the plug is relatively long, and the seamless pipe sleeve can be stably positioned on it and is not easy to shift. Under the action of the two capstans, it always keeps moving in the same axial centerline direction as the conduit, thereby ensuring the accuracy of feeding.
[0019] In the above-mentioned annealing device for seamless pipes, both the capstan 1 and the capstan 2 are electric capstans, and motors are respectively connected to the capstan 1 and the capstan 2, and the ropes on the capstan 1 and the capstan 2 are both steel ropes.
[0020] Capstan 1 and capstan 2 are both driven by motors. In the initial state, the plug is located between capstan 1 and the box body. When the seamless pipe is installed on the plug and sent into the conduit for annealing, capstan 2 runs to pull the plug to drive the seamless pipe to move. When the seamless pipe is annealed, sent out of the conduit and unloaded, capstan 1 runs to pull the plug from the side close to capstan 2 back to the initial position for annealing of the next seamless pipe, which is easy to control and use.
[0021] The noose is a steel cable with high strength and high temperature resistance to meet the needs of high temperature operations and traction.
[0022] In the above-mentioned annealing device for seamless pipes, the ends of both ends of the plug are fixedly connected with connecting rings, and the ends of the ropes of the above-mentioned capstan 1 and capstan 2 are both hook structures, and the hooks are connected to the corresponding connecting rings.
[0023] The connection ring and the hook are used for connecting the noose and the plug, which is convenient for installation and disassembly.
[0024] In the above-mentioned annealing device for seamless pipes, the ventilation pipe is arranged at the transition part of one end of the conduit and is connected with the inner cavity in the middle of the conduit, and the outer end of the ventilation pipe extends out of the box body from the lower part of the box body.
[0025] The ventilation pipe and the duct are an integrated structure. The position of the ventilation pipe allows the rare gas to flow into the duct better and squeeze out the original oxygen in the duct to the greatest extent. The outer end of the duct extends out of the box from the bottom of the box to facilitate connection with an external gas source.
[0026] In the above-mentioned annealing device for seamless pipes, the conduit is made of transparent glass material, and the side of the box body is also provided with a transparent observation window, which is arranged opposite to the middle of the conduit.
[0027] The transparent glass conduit and the transparent observation window are convenient for the staff to observe the conditions inside the box and the conduit. Both the observation window and the conduit are resistant to high temperatures to meet the high temperature operation of annealing processing.
[0028] Compared with the prior art, the annealing device of the seamless pipe has a smaller overall volume, reduces equipment cost, and can be suitable for production and processing in small and medium-sized workshops. The annealing heating of the seamless pipe is carried out in the conduit, and the heater is spirally arranged outside the conduit, so that the seamless pipe is heated evenly, and the box outside the conduit also plays a role of heat preservation, thereby improving the utilization rate of thermal energy and having higher heating efficiency. The structure of the conduit and the vent pipe facilitates the introduction of rare gas into the conduit to form a protective atmosphere, thereby avoiding oxidation on the surface of the seamless pipe. The annealing effect is good and has economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] Figure 1 It is a structural schematic diagram of the annealing device of the seamless pipe;
[0030] Figure 2 It is a schematic diagram of the structure inside the box in the annealing device of the seamless pipe;
[0031] Figure 3 It is a structural schematic diagram of a plug in the annealing device of the seamless pipe.
[0032] In the figure, 1. box body; 2. conduit; 3. heater; 4. ventilation pipe; 5. through hole; 6. transition part; 7. capstan 1; 8. capstan 2; 9. plug; 10. noose; 11. connecting ring; 12. hook; 13. observation window; 14. motor. DETAILED DESCRIPTION
[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0034] It should be noted that when a component is referred to as being "mounted on" another component, it may be directly mounted on the other component or there may be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time. When a component is considered to be "fixed to" another component, it may be directly fixed on the other component or there may be a central component at the same time.
[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more related listed items.
[0036] like Figure 1 As shown in FIG. 3 , the annealing device of the seamless pipe comprises a box body 1, the interior of the box body 1 is a cavity, and also comprises a conduit 2, a heater 3 and a feeding mechanism. The conduit 2 is penetrated in the box body 1, the conduit 2 is fixedly connected to the box body 1 and the two ends of the conduit 2 pass through the two sides of the box body 1, the heater 3 is spiral, the heater 3 is sleeved on the outside of the conduit 2 and the two ends of the heater 3 extend out of the box body 1, the feeding mechanism is arranged on both sides of the box body 1 and the middle part of the feeding mechanism passes through the conduit 2, the feeding mechanism can feed the seamless pipe from one end of the conduit 2 and out from the other end of the conduit 2, the conduit 2 is also provided with a vent pipe 4, the inner end of the vent pipe 4 is connected with the inner cavity of the conduit 2 and the outer end of the vent pipe 4 extends out of the box body 1.
[0037] The box body 1 has through holes 5 at both ends that match the conduit 2 , and the two ends of the conduit 2 are passed through the through holes 5 and are fixedly connected.
[0038] The diameters of the two ends of the conduit 2 are smaller than the diameter of the middle portion of the conduit 2 , and a smooth transition portion 6 is provided between the two ends of the conduit 2 and the middle portion of the conduit 2 .
[0039] The heater 3 matches the middle part of the conduit 2 , the middle part of the conduit 2 is passed through the heater 3 , and both ends of the heater 3 extend out of the box body 1 from the upper part of the box body 1 .
[0040] The feeding mechanism includes a capstan 1 7, a capstan 2 8 and a plug 9, the capstan 1 7 and the capstan 2 8 are respectively arranged on both sides of the box 1 where the two ends of the conduit 2 are located, a noose 10 is wound on the capstan 1 7 and the capstan 2 8, the plug 9 is arranged coaxially with the conduit 2 and the plug 9 can pass through the conduit 2, the outer end of the plug 9 is detachably connected to the noose 10 on the capstan 1 7, and the inner end of the plug 9 is detachably connected to the noose 10 on the capstan 2 8.
[0041] The outer end diameter of the plug 9 matches the inner diameter of the end of the conduit 2 , and the inner end diameter of the plug 9 is smaller than the outer end diameter of the plug 9 .
[0042] The winch 1 7 and the winch 2 8 are both electric winches, and the winch 1 7 and the winch 2 8 are respectively connected to motors 14, and the ropes 10 on the winch 1 7 and the winch 2 8 are both steel ropes.
[0043] The ends of both ends of the plug 9 are fixedly connected with connecting rings 11, and the ends of the ropes 10 of the above-mentioned capstan 1 7 and capstan 2 8 are both hook 12 structures, and the hook 12 is connected to the corresponding connecting ring 11.
[0044] The ventilation pipe 4 is arranged at the transition part 6 at one end of the conduit 2 and is communicated with the inner cavity in the middle of the conduit 2 . The outer end of the ventilation pipe 4 extends out of the box body 1 from the lower part of the box body 1 .
[0045] The conduit 2 is made of transparent glass material. The side of the box body 1 is also provided with a transparent observation window 13 , and the observation window 13 is arranged opposite to the middle of the conduit 2 .
[0046] The annealing device of the seamless pipe is used for heating and annealing the seamless pipe. The box body 1, the conduit 2 and the vent pipe 4 are all made of high temperature resistant materials. The conduit 2 serves as a reaction chamber for heating and annealing the seamless pipe. The heater 3 is spirally sleeved on the outside of the conduit 2. Both ends of the heater 3 extend out of the box body 1 for connection with an external controller. The heat source generated by the operation of the heater 3 can act evenly on the conduit 2, so that all surfaces of the seamless pipe entering the conduit 2 can be heated evenly, and the annealing effect is better. The conduit 2 is penetrated in the box body 1, and the box body 1 plays a role of heat preservation, so that the heat source generated by the heater 3 is not easy to dissipate, thereby improving the energy utilization efficiency. The vent pipe 4 is arranged on the conduit 2 for passing a rare gas from the outside into the conduit 2. The continuously introduced rare gas squeezes out the oxygen in the conduit 2, so that the seamless pipe is annealed under a protective atmosphere. The volume in the conduit 2 is small, and the amount of rare gas used is small, which reduces the production cost, thereby having economic benefits.
[0047] The feeding mechanism is used to transport seamless pipes. When the annealing device is in use, the staff installs the seamless pipe to be annealed on the feeding mechanism, and the feeding mechanism feeds the seamless pipe from one end of the pipe 2 into the pipe 2. During this process, the rare gas continues to flow into the pipe 2 from the ventilation pipe 4, and the heater 3 continues to generate a heat source, so that the seamless pipe is annealed and heated under the protective atmosphere in the pipe 2. After the annealing is completed, the feeding mechanism continues to feed the seamless pipe from the other end of the pipe 2. After the seamless pipe is slowly cooled, the staff removes the seamless pipe from the feeding mechanism and then restores the feeding mechanism to its initial state in order to repeat the above operation for continuous operation.
[0048] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0049] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention and are not intended to limit the present invention. As long as they are within the spirit of the present invention, appropriate changes and modifications to the above embodiments are within the scope of protection required by the present invention.
Claims
1. An annealing device for seamless pipes, comprising a box, the interior of which is a cavity, characterized in that: It also includes a conduit, a heater and a feeding mechanism, wherein the conduit is inserted into the box, the conduit is fixedly connected to the box and both ends of the conduit pass through both sides of the box, the heater is spiral, the heater is sleeved on the outside of the conduit and both ends of the heater extend out of the box, the feeding mechanism is arranged on both sides of the box and the middle part of the feeding mechanism passes through the conduit, the feeding mechanism can feed the seamless pipe into one end of the conduit and out from the other end of the conduit, and the conduit is also provided with a ventilation pipe, the inner end of the ventilation pipe is connected with the inner cavity of the conduit and the outer end of the ventilation pipe extends out of the box.
2. The annealing device for seamless pipe according to claim 1, characterized in that: The two ends of the box body are provided with through holes matching with the conduit, and the two ends of the conduit are passed through the through holes and are fixedly connected.
3. The annealing device for seamless pipe according to claim 2, characterized in that: The diameters of the two ends of the conduit are smaller than the diameter of the middle part of the conduit, and a smoothly transitioning portion is provided between the two ends of the conduit and the middle part of the conduit.
4. The annealing device for seamless pipe according to claim 3, characterized in that: The heater matches the middle part of the conduit, the middle part of the conduit is passed through the heater, and two ends of the heater extend out of the box body from the upper part of the box body.
5. The annealing device for seamless pipe according to claim 4, characterized in that: The feeding mechanism includes capstan one, capstan two and a plug, the capstan one and the capstan two are respectively arranged on both sides of the box where the two ends of the conduit are located, a noose is wound on the capstan one and the capstan two, the plug is arranged coaxially with the conduit and the plug can pass through the conduit, the outer end of the plug is detachably connected to the noose on the capstan one, and the inner end of the plug is detachably connected to the noose on the capstan two.
6. The annealing device for seamless pipe according to claim 5, characterized in that: The outer end diameter of the plug matches the inner end diameter of the catheter end, and the inner end diameter of the plug is smaller than the outer end diameter of the plug.
7. The annealing device for seamless pipe according to claim 6, characterized in that: The winch 1 and the winch 2 are both electric winches, and the winch 1 and the winch 2 are respectively connected with motors, and the ropes on the winch 1 and the winch 2 are both steel ropes.
8. The annealing device for seamless pipe according to claim 7, characterized in that: The ends of both ends of the plug are fixedly connected with connecting rings, and the ends of the ropes of the above-mentioned capstan 1 and capstan 2 are both hook structures, and the hooks are connected to the corresponding connecting rings.
9. The annealing device for seamless pipe according to claim 8, characterized in that: The ventilation pipe is arranged at the transition part of one end of the conduit and is communicated with the inner cavity in the middle of the conduit. The outer end of the ventilation pipe protrudes out of the box body from the lower part of the box body.
10. The annealing device for seamless pipe according to claim 9, characterized in that: The conduit is made of transparent glass material, and the side of the box body is also provided with a transparent observation window, which is arranged opposite to the middle of the conduit.