CN220757846U - Tempering preventing device of artificial oxygen lance - Google Patents

Abstract

The utility model relates to an anti-backfire device of an artificial oxygen lance, which comprises a first connecting pipe, a second connecting pipe, a fixed pipe and a fixed piece, wherein one end of the first connecting pipe is provided with a connecting part for connecting with an oxygen source pipe, and one end of the first connecting pipe far away from the connecting part is arranged in the pipe of the second connecting pipe; the fixed pipe, its interconnect has the oxygen blowing pipe, and the fixed pipe cup joints the one end that first connecting pipe was kept away from at the second connecting pipe, has still seted up the round hole on the lateral wall of fixed pipe, is provided with the mounting on the round hole, mounting and oxygen blowing pipe butt for fixed oxygen blowing pipe. According to the utility model, one end of the first connecting pipe is arranged in the second connecting pipe, and one end of the second connecting pipe is arranged in the fixing piece, so that an oxygen flow channel is formed, the flow speed of an oxygen outlet is slowed down, tempering is effectively prevented, and the safety of manual oxygen blowing operation is greatly improved; the tempering preventing device has simple structure and low processing cost, and can be popularized and applied in metallurgical enterprises.

Description

Tempering preventing device of artificial oxygen lance

Technical Field

The utility model relates to the technical field of tempering prevention devices of artificial oxygen blowing pipes, in particular to a tempering prevention device of an artificial oxygen blowing pipe.

Background

Oxygen is widely applied in the metallurgical industry, and at present, the oxygen blowing mode in the steel industry mainly comprises two oxygen blowing modes of automatic oxygen blowing of a mechanical structure and auxiliary manual oxygen blowing of an oxygen blowing pipe. The oxygen lance is a common device used by metal smelting enterprises and is mainly used for related operations such as tapping hole oxygen burning, scrap steel cutting, ladle hole burning and the like.

When an oxygen blowing pipe is adopted to assist in manual oxygen blowing, after the oxygen blowing pipe is directly bound and connected with an oxygen source pipe by iron wires, the oxygen blowing pipe is used for oxygen blowing operation, and the oxygen blowing pipe is very easy to damage because the oxygen blowing pipe belongs to a consumable part, the oxygen blowing pipe needs to be replaced frequently, the replacement procedure is complicated, and oxygen leakage is easy to occur at the joint; once the oxygen leakage occurs, when the oxygen supply pressure of the oxygen blowing pipe is insufficient, the oxygen blowing pipe is easy to be under negative pressure, flame is tempered along with the backward flowing of air, and operators are scalded.

Disclosure of Invention

The utility model provides an anti-backfire device of an artificial oxygen lance, which aims to solve the problem of avoiding backfire and convenient replacement after damage of the oxygen lance.

The tempering preventing device for the artificial oxygen lance provided by the utility model comprises a first connecting pipe and a second connecting pipe;

one end of the first connecting pipe is provided with a connecting part and is used for being connected with an oxygen source pipe, and one end of the first connecting pipe, which is far away from the connecting part, is arranged in the pipe of the second connecting pipe;

the fixed pipe, its interconnect has the oxygen blowing pipe, and the fixed pipe cup joints the one end that first connecting pipe was kept away from at the second connecting pipe, has still seted up the round hole on the lateral wall of fixed pipe, is provided with the mounting on the round hole, mounting and oxygen blowing pipe looks butt for fixed oxygen blowing pipe.

In some embodiments, the connection is a "pagoda" shaped joint.

In some embodiments, the first connection tube has an outer diameter that is less than an inner diameter of the second connection tube.

In some embodiments, the second connecting tube has an outer diameter that is less than an inner diameter of the stationary tube.

In some embodiments, the end of the first connecting tube away from the connecting portion is connected to the second connecting tube by welding.

In some embodiments, the second connecting tube is welded within the fixed tube, and the second connecting tube is coaxial with the fixed tube.

In some embodiments, the fixing member comprises a nut, and the circumferential side wall of the nut is welded with the circumferential side wall of the round hole;

and one end of the bolt penetrates through the nut to be abutted against the outer wall of the oxygen lance and is used for fixing the oxygen lance.

The utility model has the beneficial effects that: the utility model relates to an anti-backfire device of an artificial oxygen lance, which comprises a first connecting pipe, a second connecting pipe, a fixing pipe and a fixing piece. One end of the first connecting pipe is arranged in the second connecting pipe, one end of the second connecting pipe is arranged in the fixing piece, an oxygen flow channel is formed, the flow rate of oxygen passing through the first connecting pipe is lower than that of oxygen passing through the second connecting pipe, the flow rate of oxygen of the second connecting pipe is lower than that of oxygen passing through the fixed pipe, so that the oxygen finishes two times of deceleration in the backfire preventing device and then enters the oxygen blowing pipe for use, backfire is effectively prevented by slowing down the flow rate of an oxygen outlet, and the safety of manual oxygen blowing operation is greatly improved; the tempering prevention device simplifies the replacement step of the oxygen blowing pipe and improves the convenience of manual oxygen blowing. And the structure is simple, the processing cost is low, and the device can be popularized and applied in wide metallurgical enterprises.

Drawings

FIG. 1 is a schematic view of some embodiments of an anti-backfire device for an artificial oxygen lance according to the present utility model;

FIG. 2 is a schematic view of the structure of the area A shown in FIG. 1;

fig. 3 is a schematic view of the structure of the region B shown in fig. 1.

In the drawing, 100, a first connecting pipe; 110. a first welded portion; 200. a second connection pipe; 300. a fixed tube; 310. a round hole; 320. a second welded portion; 330. an oxygen lance.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Examples of the embodiments are illustrated in the accompanying drawings, wherein like or similar symbols indicate like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "top," "bottom," "inner," "outer," "axis," "circumferential," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience in describing the present utility model or simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," "engaged," "hinged," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Referring to fig. 1, 2 and 3, there is shown an anti-flashback apparatus of an artificial oxygen lance, which includes a first connection pipe 100, a second connection pipe 200, a fixing pipe 300 and a fixing member. One end of the first connection pipe 100 is provided with a connection portion for being connected with an oxygen source pipe, and one end of the first connection pipe 100, which is far away from the connection portion, is disposed in the pipe of the second connection pipe 200. The fixed pipe 300, it is connected with the oxygen lance 330 in, and fixed pipe 300 cup joints the one end that is kept away from first connecting pipe 100 at second connecting pipe 200, has still seted up round hole 310 on the lateral wall of fixed pipe 300, is provided with the mounting on the round hole 310, and the mounting is in butt with oxygen lance 330 for fixed oxygen lance 330. One end through first connecting pipe 100 sets up in second connecting pipe 200, the one end setting of second connecting pipe 200 has formed an oxygen circulation passageway in the mounting, and the velocity of flow through first connection is lower than the velocity of flow through second connecting pipe 200, the velocity of flow of oxygen of second connecting pipe 200 is lower than the velocity of flow of oxygen at fixed pipe 300, make the oxygen accomplish twice deceleration reentry oxygen lance 330 use in preventing tempering device, through slowing down the effectual tempering that has prevented of oxygen outlet velocity of flow, very big improvement the security of artifical oxygen blowing operation. The tempering prevention device simplifies the replacement step of the oxygen lance 330 and improves the convenience of manual oxygen blowing. And the structure is simple, the processing cost is low, and the device can be popularized and applied in wide metallurgical enterprises.

In some embodiments, the connection is a "pagoda" shaped joint. The structure is convenient to connect, and the connection part in the form of a pagoda joint is connected with the oxygen source pipe and reinforced by an iron wire, and the other end is welded with the second connecting pipe 200.

In some embodiments, the outer diameter of the first connection tube 100 is smaller than the inner diameter of the second connection tube 200.

In some embodiments, the outer diameter of the second connection tube 200 is smaller than the inner diameter of the stationary tube 300. In the present embodiment, one end of the second connection tube 200 is sleeved on the first connection tube 100, and is firmly and tightly welded at the first welding portion 110 by means of welding, and prevents air leakage, and the other end is inserted into the fixing tube 300, the oxygen lance 330 is connected to the inside of the fixing tube 300, and the second connection tube 200 is connected to the oxygen lance 330 in the cavity of the fixing tube 300.

In some embodiments, the end of the first connection pipe 100 remote from the connection portion is connected to the second connection pipe 200 by welding.

In some embodiments, the second connection tube 200 is welded within the fixed tube 300, and the second connection tube 200 is the same axis as the fixed tube 300. It should be noted that the fixing tube 300 and the second connection tube 200 are also tightly welded together at the second connection portion.

In some embodiments, the fastener comprises a nut, the circumferential side wall of which is welded to the circumferential side wall of the circular aperture 310. And one end of the bolt penetrates through the nut and is abutted against the outer wall of the oxygen lance 330, so as to fix the oxygen lance 330.

In this embodiment, it should be noted that the inner diameter of the first connection pipe 100 is smaller than the inner diameter of the second connection pipe 200, the outer diameter of the pipe of the first connection pipe 100 is smaller than the inner diameter of the second connection pipe 200, the outer diameter of the second connection pipe 200 is smaller than the inner diameter of the fixed pipe 300, the flow rate of oxygen in the first connection pipe 100 is v1, the flow rate of oxygen in the second connection pipe 200 is v2, the flow rate of oxygen in the oxygen blowing pipe 330 is v3, v1 < v2 < v3, so that oxygen is decelerated twice in the tempering preventing device and then enters the oxygen blowing pipe 330, and tempering is prevented by slowing down the flow rate of oxygen outlet.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "examples," "particular examples," "one particular embodiment," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The present utility model is not limited to the above preferred embodiments, and any person skilled in the art, within the scope of the present utility model, may apply to the present utility model, and equivalents and modifications thereof are intended to be included in the scope of the present utility model.

Claims (7)

1. An anti-backfire device of an artificial oxygen lance, comprising:

a first connection pipe and a second connection pipe;

one end of the first connecting pipe is provided with a connecting part and is used for being connected with an oxygen source pipe, and one end of the first connecting pipe, which is far away from the connecting part, is arranged in the pipe of the second connecting pipe;

the fixed pipe, its interconnect has the oxygen blowing pipe, the fixed pipe cup joints the second connecting pipe is kept away from the one end of first connecting pipe, still seted up the round hole on the lateral wall of fixed pipe, be provided with the mounting on the round hole, mounting and oxygen blowing pipe looks butt for fixed oxygen blowing pipe.

2. The flashback prevention apparatus of an artificial oxygen lance of claim 1, wherein the connection is a "pagoda" shaped joint.

3. The flashback arrestor for an artificial oxygen lance of claim 1, wherein the first connecting tube has an outer diameter less than an inner diameter of the second connecting tube.

4. The flashback prevention apparatus of an artificial oxygen lance of claim 1, wherein an outer diameter of the second connecting tube is smaller than an inner diameter of the fixed tube.

5. The flashback preventing device of an artificial oxygen lance of claim 1, wherein an end of the first connecting tube remote from the connecting portion is connected to the second connecting tube by welding.

6. The backfire preventing device of an artificial oxygen lance of claim 1 wherein the second connecting tube is welded within the fixed tube and the second connecting tube is the same axis as the fixed tube.

7. The flashback prevention apparatus of an artificial oxygen lance of claim 1, wherein the fixing member includes:

the circumferential side wall of the nut is welded with the circumferential side wall of the round hole;

and one end of the bolt penetrates through the nut to be abutted against the outer wall of the oxygen lance, and is used for fixing the oxygen lance.