CN204608092U - The nozzle arrangement of steel pipe tube chamber quenching - Google Patents

Abstract

The utility model relates to a nozzle device for quenching a steel pipe cavity, comprising a nozzle head, a steel pipe and a hosting device, the steel pipe is arranged on a plurality of parallel hosting devices, the nozzle head is provided with a nozzle, and the opening end of the nozzle is arranged There is a baffle, the opening of the nozzle points to the inner cavity of the steel pipe, the end of the steel pipe close to the opening of the nozzle is the water inlet end of the steel pipe, the size of the baffle is larger than the opening size of the water inlet end of the steel pipe, and the baffle is the closest to the The spacing between hosting devices is <60mm. The nozzle device for quenching the pipe cavity of the steel pipe is provided with a stopper at the end of the nozzle. When the rotating and quenched steel pipe moves toward the nozzle head, it can prevent the water inlet end of the steel pipe from approaching the nozzle, avoiding the sheathing of the steel pipe and the nozzle, and making the The quenched steel pipe ends cannot protrude too far beyond the first set of hosting devices without flapping problems.

Description

Nozzle device for quenching steel pipe cavity

technical field

The utility model relates to the production of steel pipes, in particular to a nozzle device for quenching steel pipe lumens.

Background technique

In the steel pipe manufacturing process, for high-quality steel pipe products, in order to obtain ideal mechanical properties, the steel pipe needs to be quenched.

At present, the commonly used steel pipe quenching method is to use internal jet swirl quenching. The basic principle is that the steel pipe is arranged on multiple hosting devices, and the hosting devices rotate at high speed, which in turn drives the steel pipe to rotate around its axis. The outer surface of the steel pipe is cooled by spraying, and at the same time, a nozzle sprays coolant toward the end of the steel pipe to the inner cavity of the steel pipe. Because the steel pipe is in a state of high-speed rotation, the cooling process of the entire steel pipe is very uniform, the quenching effect is good, and it is not easy to bend.

However, since the steel pipe is prone to axial movement during high-speed rotation, the steel pipe will gradually move toward the nozzle. For large-diameter steel pipes, when the axial movement is too large, the steel pipe will be sleeved on the nozzle, causing jamming problems in the subsequent steel pipe turning process.

For small-diameter steel pipes, due to the lack of rigidity of high-temperature steel pipes, when the distance between the end of the steel pipe and the nearest hosting device is too large, the end of the steel pipe in the cantilever state is prone to swinging, making the end opening out of the original axis, and the coolant sprayed by the nozzle cannot enter the inner cavity of the steel pipe, which affects the quenching effect.

Utility model content

The technical problem to be solved by the utility model is: to provide a nozzle device for quenching the steel pipe lumen, which can avoid the problem that the steel pipe is sleeved on the nozzle caused by the axial movement of the steel pipe when the steel pipe is subjected to internal spray swirl quenching.

The technical scheme that the utility model solves its technical problem adopts is:

The nozzle device for quenching the steel pipe cavity includes a nozzle head, a steel pipe and a hosting device, the steel pipe is arranged on a plurality of parallel hosting devices, the nozzle head is provided with a nozzle, and the opening end of the nozzle is provided with a baffle, The opening of the nozzle points to the inner cavity of the steel pipe, and the end of the steel pipe close to the opening of the nozzle is the water inlet end of the steel pipe. The size of the baffle is larger than the opening size of the water inlet of the steel pipe. Spacing <60mm.

Further, the shape of the baffle is circular pie, and the ejection direction of the nozzle is the same as the axial direction of the baffle.

Further, the thickness of the blocking sheet is 3mm.

The beneficial effects of the utility model are: the sprinkler device for quenching the steel tube lumen is provided with a baffle at the end of the nozzle. When the steel pipe moves, due to the blocking of the baffle, the steel pipe can be prevented from approaching the nozzle, and the steel pipe and the nozzle can be avoided. Sleeve; and the end of the steel pipe cannot be far away from the hosting device, and there will be no swinging problem.

Description of drawings

Fig. 1 is the schematic diagram of a kind of embodiment of the sprinkler device of steel tube lumen quenching of the present utility model;

The reference signs in the figure are: nozzle head 1, steel pipe 2, hosting device 3, nozzle pipe 11, baffle 12, steel pipe water inlet 21.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

The nozzle device for quenching the steel pipe cavity includes a nozzle head 1, a steel pipe 2 and a hosting device 3, the steel pipe 2 is arranged on a plurality of parallel hosting devices 3, the nozzle head 1 is provided with a nozzle 11, and the nozzle The opening end of 11 is provided with a baffle 12, the opening of the nozzle 11 points to the inner cavity of the steel pipe 2, the end of the steel pipe 2 close to the opening of the nozzle 11 is the water inlet 21 of the steel pipe, and the size of the baffle 12 is larger than the water inlet of the steel pipe 21 opening size, the distance between the blocking piece 12 and the closest hosting device 3 is <60mm.

As shown in Figure 1: the steel pipe 2 that needs to be quenched is arranged on a plurality of parallel hosting devices 3, the hosting device 3 can drive the steel pipe to rotate around its axial direction at high speed, the opening of the nozzle 11 points to the inner cavity of the steel pipe 2, and is used to spray the steel pipe Coolant, such as water, quenching agent, etc., is sprayed out from the inner cavity.

The end of the nozzle head 1 is provided with a stopper 12, and the size of the stopper 12 is larger than the opening size of the water inlet end 21 of the steel pipe. When the steel pipe moves axially towards the nozzle head 1, the water inlet end 21 of the steel pipe will be blocked by the block 12, so that the water inlet end 21 of the steel pipe and the nozzle pipe 11 will always keep a certain distance, so as to avoid the sheathing of the steel pipe and the nozzle head.

Since the distance between the baffle piece 12 and the closest hosting device 3 is less than 60mm, the length of the cantilevered part at the end of the steel pipe will not be greater than 60mm, so there will be no swinging of the end, and the coolant sprayed from the nozzle 11 will always be Can enter the tube lumen.

For steel pipes with large diameters, due to the blocking of the baffle 12, the situation that the steel pipes are sleeved on the nozzle head 1 will not occur.

The shape of the blocking piece 12 can be arbitrary, as long as it can block the water inlet end 21 of the steel pipe. A preferred shape of the baffle 12 may be a pie shape, and the ejection direction of the nozzle 11 is the same as the axial direction of the baffle 12 .

Further, in order to make the baffle 12 have sufficient strength, preferably, the thickness of the baffle 12 may be 3mm.

Claims (3)

1. The nozzle device for quenching the steel pipe cavity, comprising a nozzle head (1), a steel pipe (2) and a hosting device (3), and the steel pipe (2) is arranged on a plurality of parallel hosting devices (3), characterized in that , the nozzle head (1) is provided with a nozzle (11), and the opening end of the nozzle (11) is provided with a baffle (12), and the opening of the nozzle (11) points to the inner cavity of the steel pipe (2), so The end of the steel pipe (2) near the opening of the spray pipe (11) is the water inlet end (21) of the steel pipe, and the size of the baffle (12) is greater than the opening size of the water inlet end of the steel pipe (21), and the baffle (12) and The distance between the closest hosting devices (3) is <60mm. 2. The nozzle device for quenching steel pipe cavity as claimed in claim 1, characterized in that, the shape of the baffle (12) is a round pie shape, and the ejection direction of the nozzle (11) is in line with the baffle (12) same axis. 3. The nozzle device for quenching steel pipe lumen according to claim 2, characterized in that, the thickness of the blocking piece (12) is 3mm.