CN212610798U - Nozzle device for steel rail heat treatment process - Google Patents
Nozzle device for steel rail heat treatment process Download PDFInfo
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- CN212610798U CN212610798U CN202020827599.7U CN202020827599U CN212610798U CN 212610798 U CN212610798 U CN 212610798U CN 202020827599 U CN202020827599 U CN 202020827599U CN 212610798 U CN212610798 U CN 212610798U
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- air outlet
- rail
- nozzle
- heat treatment
- steel rail
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Abstract
The utility model discloses a nozzle device for rail thermal treatment process, including the nozzle body, the one end of nozzle body is the air intake and the other end is the air outlet, the air outlet includes main air outlet and vice air outlet, main air outlet with vice air outlet is in the inside of nozzle body is cut apart, and wherein every air outlet of cutting apart and forming makes main, vice air outlet and inside income wind gap certain tapering for the taper shape with the branch tip department. The utility model aims at providing a nozzle device for rail heat treatment process guarantees the cooling strength of triangle rail on the rail.
Description
Technical Field
The utility model relates to a nozzle device used in the heat treatment process of steel rails.
Background
Along with the continuous increase of the strength of the steel rail, the unit weight per meter of the steel rail is continuously increased from 60Kg/m to 75Kg/m, and after the unit weight of the steel rail is increased, the depth of a through hardening layer of the steel rail is continuously reduced in the heat treatment process. No matter the steel rail is 60Kg/m or 75Kg/m, in the heat treatment process, the arrangement of the steel rail nozzles or the cooled surface of the steel rail are both the rail head and the rail bottom of the steel rail, and the rail web of the steel rail is not provided with a cooling spray head or is not directly cooled by blowing air. The rail web part of the steel rail is used as a connecting part for connecting the rail head and the rail bottom of the steel rail, particularly the strength of the upper triangular area of the steel rail and the two sides of the steel rail is influenced by cooling capacity, the difference of tensile strength values is large, and the risk that the steel rail head is lifted in service is directly increased, so that the cooling mode of the rail head of the steel rail is improved, the strength of the upper triangular area of the steel rail is improved, the tensile strength of the rail head of the steel rail and the tensile strength of the upper triangular area of the steel rail are controlled within a certain range as far as possible, and the strength and the hardness of the rail head of the steel rail and the.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a nozzle device for rail heat treatment process guarantees the cooling strength of triangle rail on the rail.
In order to solve the technical problem, the utility model adopts the following technical scheme:
the utility model provides a nozzle device for rail heat treatment process, includes the nozzle body, the one end of nozzle body is the air intake and the other end is the air outlet, the air outlet includes main air outlet and vice air outlet, main air outlet with vice air outlet is in the inside of nozzle body is cut apart, and wherein every air outlet of cutting apart and division endpoint department for conical shape make main, vice air outlet and inside income wind gap form certain tapering, simultaneously the inside whole certain tapering that also has of nozzle body.
Furthermore, the outer periphery of one end of the nozzle body, which is close to the air inlet, is provided with threads.
Furthermore, the end surfaces of the main air outlet and the auxiliary air outlet are both oblong.
Further, the distance between the mouths of the main air outlet and the auxiliary air outlet is the diameter of the mouth of the auxiliary air outlet, and preferably the diameter of the oblong mouth in the length direction.
Compared with the prior art, the utility model discloses a beneficial technological effect:
the utility model discloses be the two mouthfuls of designs of export of nozzle, air intake of nozzle promptly, two air outlets optimize the nozzle and suitably reduce the nozzle sectional area of nozzle before optimizing, increase tuyere air outlet quantity, guarantee under the condition that rail railhead side cooling capacity does not reduce, improve the cooling capacity of triangle region on the rail, this tuyere coverage area is big, can guarantee triangle rail cooling strength on the rail.
Drawings
The present invention will be further explained with reference to the following description of the drawings.
FIG. 1 is a schematic front view of a nozzle device for a heat treatment process of a steel rail according to the present invention;
FIG. 2 is a left side view of the nozzle device for the heat treatment process of the steel rail of the present invention
FIG. 3 is a schematic side view of a rail head cooling;
description of reference numerals: 1. an air inlet; 2. a main air outlet; 3. an auxiliary air outlet; 4. conical shape; 5. a thread; 6-rail head.
Detailed Description
As shown in fig. 1 to 3, a nozzle device for a steel rail heat treatment process includes a nozzle body, one end of the nozzle body is an air inlet 1, the other end of the nozzle body is an air outlet, the air outlet includes a main air outlet 2 and an auxiliary air outlet 3, the main air outlet 2 and the auxiliary air outlet 3 are divided inside the nozzle body, the divided portion is conical 4, and the purpose is to enable the main air outlet and the auxiliary air outlet and an internal air inlet to form a certain taper. Meanwhile, the whole inner part of the nozzle body also has a certain taper according to the requirement.
And the periphery of one end of the nozzle body, which is close to the air inlet, is provided with threads 5. The end surfaces of the main air outlet 2 and the auxiliary air outlet 3 are both oblong. The distance between the mouths of the main air outlet 2 and the auxiliary air outlet 3 is the diameter of the mouth of the auxiliary air outlet 3, preferably the diameter of the oblong mouth in the length direction.
The utility model discloses divide into two exports with the air outlet, be main air outlet and vice air outlet respectively, main and vice air outlet is cut apart inside the nozzle, as shown in figure 1. The air outlet and the dividing end of each divided nozzle are ensured to be conical and have a certain taper, and the whole inside of the nozzle is ensured to have a certain taper, as shown in fig. 1. The diameter of the air outlet 1 determines the distance between the adjusting nozzle and the side surface of the rail head 6 of the steel rail, the general adjusting distance is 15-30mm, the side surface of the rail head 6 of the steel rail corresponds to the main air outlet 2, the coverage area and the spraying strength of the air nozzle are ensured, the adjusting auxiliary air outlet 3 corresponds to the triangular area on the steel rail, because the surface distance between the side surface of the rail head 6 and the surface of the triangular area on the rail head 6 is different, when the distance between the main air outlet 2 and the side surface of the rail head of the steel rail is fixed, the larger the diameter of the nozzle opening is, the smaller the spraying strength is, the auxiliary air outlet 3, namely the small-caliber nozzle type nozzle, cools the triangular area on the steel rail is adopted, the main air outlet, namely the large-caliber nozzle type nozzle, can completely cover the side surface of the steel rail, wherein the spraying surface of the small-caliber nozzle completely covers the triangular area on the, the problem of insufficient cooling capacity of the triangle on the steel rail is solved by the small caliber of the nozzle, and the schematic diagram of the side surface cooling of the rail head of the steel rail is shown in figure 3.
Through implementing the utility model discloses a nozzle can reduce the rail heat treatment in-process and go up triangular tonifying wind cooling tuyere to the rail specially, reduces equipment and drops into, increases the inside operating space of thermal treatment line.
The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and those skilled in the art should also be able to make various modifications and improvements to the technical solution of the present invention without departing from the spirit of the present invention, and all such modifications and improvements are intended to fall within the scope of the present invention as defined in the appended claims.
Claims (4)
1. A nozzle device for a steel rail heat treatment process is characterized in that: the nozzle comprises a nozzle body, one end of the nozzle body is an air inlet, the other end of the nozzle body is an air outlet, the air outlet comprises a main air outlet and an auxiliary air outlet, the main air outlet and the auxiliary air outlet are arranged in the nozzle body, and each air outlet formed by cutting is conical with a cutting end, so that the main air outlet, the auxiliary air outlet and an internal air inlet form a certain taper.
2. Nozzle device for use in a process for the heat treatment of steel rails according to claim 1, characterized in that: and the periphery of one end of the nozzle body, which is close to the air inlet, is provided with threads.
3. Nozzle device for use in a process for the heat treatment of steel rails according to claim 1, characterized in that: the end faces of the main air outlet and the auxiliary air outlet are both oblong.
4. A nozzle arrangement for use in a rail heat treatment process according to claim 3, wherein: the distance between the mouths of the main air outlet and the auxiliary air outlet is the diameter of the mouth of the auxiliary air outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020827599.7U CN212610798U (en) | 2020-05-18 | 2020-05-18 | Nozzle device for steel rail heat treatment process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020827599.7U CN212610798U (en) | 2020-05-18 | 2020-05-18 | Nozzle device for steel rail heat treatment process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212610798U true CN212610798U (en) | 2021-02-26 |
Family
ID=74724074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020827599.7U Active CN212610798U (en) | 2020-05-18 | 2020-05-18 | Nozzle device for steel rail heat treatment process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212610798U (en) |
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2020
- 2020-05-18 CN CN202020827599.7U patent/CN212610798U/en active Active
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