Through immersion type steel pipe continuous quenching device
By designing a through-immersion quenching process system in the steel pipe quenching device, using the feed and discharge transition pipes and valves to control the water level, the problems of immersion quenching of traditional quenching devices are solved, and efficient continuous quenching and Energy saving improves production efficiency.
Patent Information
- Application Number
- CN202323637422.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-29
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2033-12-29
AI Technical Summary
During the immersion quenching process of traditional steel pipe quenching devices, it takes a long time to be immersed in the quenching pool from the discharge to the lower side, resulting in a decrease in temperature and affecting the quenching quality. In winter, the temperature drops even greater, and the discharge temperature needs to be increased to increase fuel consumption.
A continuous quenching process system for penetrating immersion steel pipes is designed, including kiln wall, kiln top, kiln bottom, furnace transmission roller rod and quenching device. The quenching pool is fixed to the discharge end of the steel pipe heating furnace and is transferred through feed and discharge transition. The pipes and valves control the water level, realize immersion quenching, reducing water waste and temperature drop.
It has achieved efficient continuous quenching, reduced energy consumption, improved production efficiency, and has good social and economic benefits.
Smart Images
Figure CN222250876U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of heat treatment of steel pipes, in particular to an immersion type continuous quenching process system for steel pipes. Background Art
[0002] To achieve immersion quenching in traditional steel pipe quenching equipment, it is necessary to wait until the entire steel pipe is completely out of the furnace, and then the steel pipe and the roller outside the furnace are immersed in the quenching pool for quenching under the action of the elevator. From the time the steel pipe is taken out of the furnace to the time it is immersed in water, it needs to go through the process of taking out of the furnace and sinking, which takes a long time, resulting in a large drop in the temperature of the steel pipe during quenching, affecting the quenching quality; the method of increasing the furnace temperature can be used to compensate for the above-mentioned temperature drop, resulting in greater fuel consumption; especially in winter, compared with summer, the temperature drop is greater, the required furnace temperature is higher, and the fuel consumption is greater. Summary of the invention
[0003] The utility model aims to provide a through-immersion steel pipe continuous quenching process system which has a simple and reasonable structure, continuous production and improved production efficiency.
[0004] The technical scheme of the utility model is as follows: it comprises a steel pipe heating furnace and a quenching device which are composed of a kiln wall, a kiln roof, a kiln bottom, a furnace transmission roller and a furnace roller transmission motor, etc., the quenching device is composed of a quenching pool, a quenching transmission roller, a quenching pool support frame and a quenching transmission motor, etc., the quenching pool is fixedly mounted on a quenching pool support frame arranged at the discharge end of the steel pipe heating furnace, a feed inlet water sealing device and a discharge outlet water sealing device are respectively arranged at the front and rear ends of the quenching pool, and a pool transmission roller which is flush with the height of the steel pipe heating furnace's furnace transmission roller is arranged in the middle of the quenching pool and is driven by a quenching transmission motor arranged at one side of the quenching pool.
[0005] Furthermore, the feed port water sealing device is composed of a feed transition pipe and a valve I, the feed transition pipe is arranged on the quenching pool wall near the discharge end of the furnace body, and valve I is arranged between the feed transition pipe and the quenching pool wall; the discharge port water sealing device is composed of a discharge transition pipe and a valve II, that is, a discharge transition pipe is arranged on the corresponding wall on the other side of the quenching pool, and valve II is arranged between the discharge transition pipe and the quenching pool wall.
[0006] Furthermore, the quenching pool feed transition pipe and the discharge transition pipe are both shrinking devices, and the pipe diameter is 15~20mm larger than the pipe diameter of the steel pipe. The purpose is to prevent a large amount of water from flowing out when the steel pipe enters the quenching pool, avoiding unnecessary waste of water, and at the same time controlling a higher water level to achieve immersion quenching.
[0007] Furthermore, the valve is a gate device of a steel plate driven by a cylinder, and its function is to prevent a large amount of water from overflowing from the quenching pool feed transition pipe and the discharge transition pipe before the steel pipe enters the quenching pool or leaves the quenching pool, thereby reducing the water replenishment amount of the quenching pool.
[0008] The process of the utility model is:
[0009] First, the steel pipe is heated to the temperature required by the process through the steel pipe heating furnace, and the roller motor in the steel pipe heating furnace drives the transmission roller in the furnace to push the steel pipe toward the quenching pool. At the same time, the transition pipe in and out of the quenching pool can reduce the gap between the steel pipe and the water outlet, so that the water level in the quenching pool is kept at a higher water level line, and the immersion quenching heat treatment is realized. The steel pipe entering the quenching pool is driven by the quenching transmission motor to drive the quenching transmission roller to rotate, and the steel pipe is sent into the quenching pool for immersion quenching heat treatment. Finally, the steel pipe passes through the quenching pool and the transition pipe out of the quenching pool to complete the entire immersion quenching heat treatment. It reciprocates here to realize the continuous immersion steel pipe continuous quenching process. When there is no steel pipe passing through the front and rear feed transition pipes and the discharge transition pipe for quenching heat treatment, the electrical automatic device will drive the valve to close automatically to avoid the waste of water in the quenching pool.
[0010] The beneficial effects of the utility model are: not only is the structure reasonable and the operation simple, but also the continuous quenching of the through-immersion steel pipe is realized. Compared with the traditional process and equipment, it not only realizes the continuous quenching method of seamless connection between the high-temperature furnace and the quenching device, but also improves the production efficiency and reduces the energy consumption of the product. It has good social and economic benefits and can be widely used in the production of products that require high-temperature quenching.
[0011] The utility model will be further described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 This is a schematic diagram of the main structure of the utility model;
[0013] Figure 2 It is a schematic diagram of the transmission structure of the utility model.
[0014] In the figure: 1 is the kiln wall, 2 is the kiln roof, 3 is the kiln bottom, 4 is the driving roller in the furnace, 5 is the driving motor for the roller in the furnace, 6 is the quenching pool, 7 is the feed transition pipe, 8 is the discharge transition pipe, 9 is the quenching driving roller, 10 is the quenching pool support frame, 11 is valve I, 12 is valve II, 13 is the quenching pool water level line, 14 is the quenching driving motor, and 15 is the steel pipe. Implementation
[0015] like Figure 1 , Figure 2As shown, a through-immersion steel pipe continuous quenching device includes two major parts, namely, a steel pipe heating furnace and a quenching device, which are composed of a kiln wall 1, a kiln top 2, a kiln bottom 3, a furnace drive roller 4 and a furnace roller drive motor 5. The quenching device is composed of a quenching pool 6, a quenching drive roller 9, a quenching pool support frame 10 and a quenching drive motor 14. The quenching pool 6 is fixedly mounted on the quenching pool support frame 10 arranged at the discharge end of the steel pipe heating furnace. The quenching pool drive roller 9 is arranged in the middle of the quenching pool 6 and is flush with the steel pipe heating furnace furnace drive roller 4. The quenching pool drive roller 9 is driven by a quenching drive motor 14 arranged on one side of the quenching pool 6. A feed transition pipe 7 is arranged on the quenching pool wall near the furnace discharge end, and a valve I 11 is arranged between the feed transition pipe 7 and the quenching pool wall. A discharge transition pipe 8 is arranged on the corresponding wall on the other side of the quenching pool 6, and a valve II 12 is arranged between the discharge transition pipe 8 and the quenching pool wall. The quenching pool feed transition pipe 7 and the discharge transition pipe 8 are both shrinking devices, and the pipe diameter is 15-20mm larger than the pipe diameter of the steel pipe 15, which can effectively prevent a large amount of water from flowing out when the steel pipe 15 enters the quenching pool 6, avoiding unnecessary waste of water, and at the same time controlling the higher quenching pool water level line 13 to achieve immersion quenching. The valve I11 and the valve II12 are both gate devices driven by cylinders. Their function is to prevent a large amount of water from overflowing from the quenching pool feed transition pipe 7 and the discharge transition pipe 8 before the steel pipe 15 enters the quenching pool or leaves the quenching pool, thereby reducing the amount of water replenished in the quenching pool. When implementing the utility model, since it is a steel pipe quenching heat treatment, it is necessary to first heat the steel pipe 15 to the temperature required by the process through a tube heating furnace, and then drive the transmission roller in the furnace through the roller transmission motor 5 in the heating furnace to push the steel pipe 15 into the quenching pool 6. At the same time, the feed transition pipe 7 and the valve Ⅰ11 arranged at the feed port of the quenching pool 6 constitute the feed port water sealing device and the discharge transition pipe 8 and the valve Ⅱ12 arranged at the discharge port constitute the discharge port water sealing device can reduce the gap between the steel pipe and the water outlet, so that the water level in the quenching pool 6 is maintained at a higher quenching pool water level line 13, thereby realizing immersion quenching heat treatment. When the steel pipe 15 heated by the steel pipe heating furnace enters the feed transition pipe 7 of the quenching pool 6, the automatic control device will open the valve Ⅰ11 to allow the steel pipe 15 to enter the quenching pool, and then drive the quenching drive roller 9 to rotate through the quenching drive motor 14 to send the steel pipe 15 into the quenching pool 6 for immersion quenching heat treatment. Finally, the steel pipe 15 passes through the quenching pool outlet water sealing device to exit the quenching pool 6, completing the entire immersion quenching heat treatment. When the automatic control device detects that there is no steel pipe passing through the inlet and outlet transition pipe, the valve will automatically fall to close the inlet and outlet to prevent the water in the quenching pool 6 from being lost. The utility model has the advantages of simple and reasonable structure, high-temperature continuous production, improved production efficiency, and reduced product energy consumption. Its promotion and application will bring good economic and social benefits to enterprises.
Claims
1. A through-immersion steel pipe continuous quenching device, comprising a steel pipe heating furnace and a quenching device consisting of a kiln wall (1), a kiln top (2), a kiln bottom (3), a furnace drive roller (4) and a furnace roller drive motor (5), characterized in that: The quenching device is composed of a quenching pool (6), a quenching drive roller (9), a quenching pool support frame (10) and a quenching drive motor (14). The quenching pool (6) is fixedly mounted on the quenching pool support frame (10) arranged at the discharge end of the steel pipe heating furnace. A feed inlet water sealing device and a discharge outlet water sealing device are respectively arranged at the front and rear ends of the quenching pool (6). An in-pool drive roller (9) is arranged in the middle of the quenching pool (6) and is flush with the in-furnace drive roller (4) of the steel pipe heating furnace. The roller is driven by a quenching drive motor (14) arranged on one side of the quenching pool (6).
2. A through-type immersion steel pipe continuous quenching device according to claim 1, characterized in that: The feed inlet water sealing device is composed of a feed transition pipe (7) and a valve I (11), wherein the feed transition pipe (7) is arranged on the wall of the quenching pool near the discharge end of the furnace body, and a valve I (11) is arranged between the feed transition pipe (7) and the quenching pool wall; the discharge outlet water sealing device is composed of a discharge transition pipe (8) and a valve II (12), that is, a discharge transition pipe (8) is arranged on the corresponding wall on the other side of the quenching pool (6), and a valve II (12) is arranged between the discharge transition pipe (8) and the quenching pool wall.
3. A through-immersion steel pipe continuous quenching device according to claim 1 or 2, characterized in that: The feed transition pipe (7) and the discharge transition pipe (8) of the quenching pool (6) are both necking devices, and the diameter of the pipes is 15 to 20 mm larger than the diameter of the steel pipe (15).
4. A through-immersion steel pipe continuous quenching device according to claim 2, characterized in that: The valve is a gate device in which a steel plate is driven by a cylinder.