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CN-121976021-A - Steel pipe quenching cooling device and use method thereof

CN121976021ACN 121976021 ACN121976021 ACN 121976021ACN-121976021-A

Abstract

A steel pipe quenching cooling device and a using method thereof relate to the technical field of metal material heat treatment and comprise a box body with an inner space, wherein a plurality of detection openings communicated with the outside are formed in the box body, a data acquisition module is arranged in the inner space and is provided with a plurality of interfaces for plugging and installing and electrically connecting sensor modules, the sensor modules are respectively plugged in the corresponding interfaces and are electrically connected with the data acquisition module, and the sensor modules are provided with sensing ends facing the corresponding detection openings. The data acquisition module is positioned and installed relative to the box body, the interfaces are in one-to-one correspondence with the detection openings, so that when the sensor module is inserted in place, the sensing end is aligned with the detection openings and is communicated with the outside through the detection openings, a communication channel is arranged between each detection opening and the corresponding interface, the communication channel is positioned between the box body and the data acquisition module, the channel walls are enclosed to form a channel inner cavity, and two ends of the channel wall are sleeved with the detection openings and the interfaces respectively.

Inventors

  • LIN BAOYAN

Assignees

  • 福建鑫冠和智能科技有限公司

Dates

Publication Date
20260505
Application Date
20260407

Claims (10)

  1. 1. A steel pipe quenching cooling device, characterized by comprising: the fixed inner core is arranged in the inner cavity of the steel pipe; The annular metering cavity is arranged in the fixed inner core and is used for accommodating a preset amount of cooling liquid required by single quenching cooling; The annular liquid film transfer unit is arranged on the periphery of the fixed inner core and is communicated with the annular metering cavity, the annular liquid film transfer unit comprises an annular main body, a transfer surface arranged on the periphery of the annular main body and an annular liquid outlet structure communicated with the annular metering cavity, wherein the annular liquid outlet structure is used for guiding the preset amount of cooling liquid to the transfer surface, the transfer surface is used for bearing the cooling liquid and transferring the cooling liquid to the inner wall of the steel pipe in a contact transfer mode when contacting the inner wall of the steel pipe to form a quenching liquid film, and the transfer surface and the inner wall of the steel pipe form surface contact, and the cooling liquid does not act on the inner wall of the steel pipe in a free injection mode before reaching the inner wall of the steel pipe; A short-time contact control mechanism for driving the annular liquid film transfer unit to switch between a non-contact position spaced from the inner wall of the steel pipe and a transfer position in contact with the inner wall of the steel pipe, so that the predetermined amount of cooling liquid in the annular metering cavity is guided out through the annular liquid outlet structure during the transfer position and transferred to the inner wall of the steel pipe through the transfer surface, thereby forming quenching liquid film sections which are distributed at intervals along the axial direction of the steel pipe and are separated from each other; The downstream pumping and exhausting isolation unit is arranged on the downstream side of the annular liquid film transfer unit along the relative movement direction of the steel pipe and is used for pumping and exhausting the residual cooling liquid of the quenching liquid film section on the downstream side so as to limit the cooling liquid from diffusing along the axial direction of the steel pipe; And the relative movement assembly is used for driving the steel pipe and the fixed inner core to generate axial relative movement so as to enable a plurality of quenching liquid film segments to be formed along the axial direction of the steel pipe in sequence.
  2. 2. A steel pipe quench cooler as set forth in claim 1 further comprising a metering fluid replacement assembly in communication with said annular metering chamber for supplementing said annular metering chamber with said predetermined amount of coolant.
  3. 3. A steel pipe quench cooling apparatus as set forth in claim 2 further comprising a control unit for controlling said metering and fluid replenishment assembly to replenish said annular metering chamber with cooling fluid during said non-contact position of said annular liquid film transfer unit.
  4. 4. A steel pipe quench cooler as claimed in any one of claims 1 to 3 wherein the volume of said annular metering chamber corresponds to the amount of cooling liquid required to form said quench liquid film segment in a single pass.
  5. 5. The quenching cooling device of steel pipes as set forth in claim 1, wherein the annular liquid outlet structure is an annular liquid outlet gap continuously arranged along the circumferential direction of the steel pipes.
  6. 6. A steel pipe quenching cooling apparatus as claimed in claim 1 wherein said transfer surface is an annular surface continuously disposed in the circumferential direction of the steel pipe.
  7. 7. A steel pipe quench cooler as set forth in claim 1 wherein said transfer surface is adapted to maintain a continuous distribution of coolant over the surface during contact.
  8. 8. The quenching cooling device of steel pipes as set forth in claim 1, wherein the downstream pump-out isolation unit is disposed at an axially downstream adjacent position of the transfer position and comprises an annular pump-out structure disposed continuously along the circumferential direction of the steel pipes.
  9. 9. A steel pipe quenching cooling device as set forth in claim 1 wherein the annular liquid film transfer unit is in said transfer position for a duration less than the time required for the cooling liquid to flow continuously in the axial direction on the inner wall of the steel pipe to form a continuous liquid film.
  10. 10. A method of using the steel pipe quenching apparatus as claimed in any one of claims 1 to 9, comprising the steps of: Replenishing the annular metering cavity with a predetermined amount of cooling liquid required for a single quench cooling during a non-contact position of the annular liquid film transfer unit; driving the annular liquid film transfer unit to switch to a transfer position, so that the predetermined amount of cooling liquid is transferred to the inner wall of the steel pipe through the transfer surface during the transfer position to form quenching liquid film sections separated from each other; after the quenching liquid film section is formed, residual cooling liquid of the quenching liquid film section at the downstream side of the steel pipe relative movement direction is pumped and discharged through the downstream pumping and discharging isolation unit; and driving the steel pipe and the fixed inner core to continuously generate axial relative motion, and repeating the steps to form a plurality of quenching liquid film segments distributed along the axial direction at intervals.

Description

Steel pipe quenching cooling device and use method thereof Technical Field The invention belongs to the technical field of metal material heat treatment, and particularly relates to a steel pipe quenching cooling device and a steel pipe quenching cooling method. Background In the heat treatment process of hollow metal components such as steel pipes, quenching and cooling of the inner wall are important links affecting the structural performance and the service life of the hollow metal components. In the prior art, the quenching of the inner wall of the steel pipe usually adopts a spray nozzle spray or annular liquid curtain mode, and the cooling liquid is introduced into the inner cavity of the steel pipe and acts on the surface of the inner wall so as to realize rapid cooling. However, the above-mentioned methods still have a certain limitation in practical application. Since the cooling liquid acts on the inner wall of the steel pipe in a free jet or continuous flow mode, the cooling liquid is easy to diffuse along the axial direction on the surface of the inner wall and forms a continuous liquid film, and the cooling area is difficult to control accurately. This not only results in cooling interactions between the different axial locations, reducing quench uniformity, but may also cause localized overcooling or undercooling, thereby affecting the mechanical properties and dimensional stability of the steel pipe. In addition, under the condition of continuous liquid supply, a liquid film formed by the cooling liquid on the inner wall of the steel pipe is difficult to interrupt in time, and axial communication is easy to occur between the liquid, so that sectional cooling control cannot be realized. In the prior art, although the spraying flow rate can be regulated or a plurality of nozzles are arranged to control to a certain extent, the problems of the diffusion of the cooling liquid along the inner wall and the mutual interference between areas are difficult to fundamentally solve. Therefore, how to realize the controllable distribution of the cooling liquid on the inner wall surface during the quenching process of the inner wall of the steel pipe, especially realize the sectional cooling which is separated from each other along the axial direction, thereby improving the quenching uniformity and avoiding the axial communication diffusion of the cooling liquid becomes a technical problem to be solved in the field. Disclosure of Invention The invention aims to solve the problems that cooling liquid is easy to diffuse along the axial direction, a continuous liquid film is easy to form, sectional quenching control is difficult to realize and mutual interference among different cooling areas in the existing quenching process of the inner wall of a steel pipe, and provides a steel pipe quenching cooling device and a use method thereof, so that the sectional liquid film control of the cooling liquid which is separated from each other along the axial direction of the inner wall of the steel pipe is realized, thereby improving the quenching uniformity and reducing the adverse effect brought by the axial communication diffusion of the cooling liquid. The invention provides a steel pipe inner wall segmented liquid film quenching device which comprises a fixed inner core, an annular metering cavity, an annular liquid film transfer unit, a short-time contact control mechanism, a downstream pumping and exhausting isolation unit and a relative motion assembly. The fixed inner core is arranged in the inner cavity of the steel pipe, and the annular metering cavity is arranged in the fixed inner core and is used for containing a preset amount of cooling liquid required by single quenching. The annular liquid film transfer unit is arranged on the periphery of the fixed inner core and communicated with the annular metering cavity, and comprises an annular main body, a transfer surface arranged on the periphery of the annular main body and an annular liquid outlet structure communicated with the annular metering cavity. The annular liquid outlet structure is used for guiding the preset amount of cooling liquid to the transfer surface, the transfer surface is used for bearing the cooling liquid, and the cooling liquid is transferred to the inner wall of the steel pipe in a contact transfer mode when contacting with the inner wall of the steel pipe to form a quenching liquid film, in some embodiments, the transfer surface and the inner wall of the steel pipe form surface contact, and the cooling liquid does not act on the inner wall of the steel pipe in a free jet mode before reaching the inner wall of the steel pipe. The short-time contact control mechanism is used for driving the annular liquid film transfer unit to switch between a non-contact position spaced from the inner wall of the steel pipe and a transfer position in contact with the inner wall of the steel pipe, so that a preset amount of cooling liquid in the annul