CN201307072Y

CN201307072Y - Molten steel gas sampling gun

Info

Publication number: CN201307072Y
Application number: CNU2008201556908U
Authority: CN
Inventors: 顾学红; 董志平; 蒋兴元; 周武
Original assignee: Baoshan Iron and Steel Co Ltd
Current assignee: Baoshan Iron and Steel Co Ltd
Priority date: 2008-11-21
Filing date: 2008-11-21
Publication date: 2009-09-09
Anticipated expiration: 2018-11-21

Abstract

The utility model discloses a molten steel gas sampling gun which comprises a gun body, a grip and a paper sampler, wherein, a glass pipe is arranged at the front end of the paper sampler; the grip is arranged at the tail end of the gun body; and the sampler is sleeved at the front end of the gun body, and clamped and fixed with the gun body through a buckle. The sampling gun further comprises a decompressing part; one end of the decompressing part is connected to and arranged at the front end of the gun body, and the other end thereof is extended into the sampler. High temperature gas produced by the combustion of the sampler in the sampling process can be discharged through an exhaust pipe of the decompressing part to reduce the pressure in the gun body, thereby ensuring that the molten steel effectively enters the glass tube, avoiding the phenomena of short sample, gas hole or empty sample, greatly improving the success rate of sampling, ensuring production efficiency and saving use cost of the sampling gun.

Description

Molten steel gas sample rifle

Technical field

The utility model relates to the sampling technique of refined molten steel, in particular, relates to a kind of molten steel gas sample rifle, and this sampling gun can avoid occurring phenomenons such as short sample or empty sample when sampling.

Background technology

Molten steel gas content sample analysis in the steelmaking process link that is absolutely necessary has only by sample analysis, and the process for making technician could understand the smelting situation of molten steel, carries out the technology adjustment in good time.Because in the liquid steel refining process, gas content is extremely low, and analysis precision requires high especially, all require to be accurate to 1,000,000/.In order to reach the analysis reliability, each makes steel producer all has strict especially requirement to molten steel gas sample rifle, and promptly sample and pore phenomenon can not appear lacking in the molten steel that has gas of Cai Jiing (hereinafter to be referred as the gas sample).

See also shown in Figure 1, and common molten steel gas sample rifle 10 comprises rifle body 11, handle 12 and sampler 13 at present, handle 12 is located at rifle body 11 ends, sampler 13 is sheathed on the front end of rifle body 11, and the end of sampler 13 then connects and fixes with rifle body 11 by the buckle 14 of rifle body 11 front end outer wall settings; Sampler 13 is a paper material, is provided with a glass tube that is used to take a sample 131 in the front end.During use, in the sampler 13 front ends insertion molten steel with sampling gun 10, molten steel pours in the glass tube by the opening of sampler front end, molten steel is gathered to glass tube 131, thereby be can be used to the gas content in this molten steel is carried out assay.But, in the actual use, in the whole process of inserting molten steel, because at high temperature under the environment, the 13 moments burning of papery sampler produces a large amount of gases, and portion gas enters in the rifle body of sampling gun, be full of whole rifle body 11 inside, because of whole rifle body 11 is in sealing state, and the opening of glass tube 131 front ends is blocked by molten steel, and gas can't in time be discharged, therefore at the higher pressure of rifle body 11 inner generations, this pressure usually surpasses molten steel rises pressure, and molten steel can not be entered in the glass tube 131 smoothly, and is too short or pore arranged after causing the gas sample to take out, even the useless sample phenomenon of empty sample, thereby cause the sampling failure.Therefore, the sampling success ratio of present stage is lower, has only about 50%, has influenced rhythm of production greatly, but also has caused the waste of sampler 13.

The utility model content

At the above-mentioned shortcoming that exists in the prior art, the purpose of this utility model provides a kind of molten steel gas sample rifle, and this sampling gun can improve the sampling success ratio, avoids taking place short sample or empty sample phenomenon

For achieving the above object, the utility model adopts following technical scheme:

This molten steel gas sample rifle comprises the papery sampler that is provided with glass tube in rifle body, handle and the front end, handle is located at the end of rifle body, sampler is sheathed on the front end of rifle body, and connect and fix by buckle and rifle body, this sampling gun also comprises a decompression member, this decompression member one end is connected at rifle body front end, and the other end stretches in the sampler.

Described decompression member comprises a relief pipe, has several vent ports on the outer wall of relief pipe, and sets gradually gasket seal and be used to reduce the high-temperature insulation resin that heat is transmitted in the relief pipe inside of vent port one side.

The quantity of described vent port is four, radially evenly offers along relief pipe is same.

One end of described relief pipe is provided with male connection, and it is fixing to be threaded mutually in the insertion rifle body.

In technique scheme, molten steel gas sample rifle of the present utility model comprises the papery sampler that is provided with glass tube in rifle body, handle and the front end, handle is located at the end of rifle body, sampler is sheathed on the front end of rifle body, and connect and fix by buckle and rifle body, this sampling gun also comprises a decompression member, and this decompression member one end is connected at rifle body front end, and the other end stretches in the sampler.The high-temperature gas that the sampler burning produced when the gas outlet by decompression member can be with sampling is discharged, reduce the pressure in the rifle body, thereby guarantee that molten steel effectively enters in the glass tube, avoid occurring phenomenons such as short sample, pore or empty sample, improved the success ratio of sampling greatly, not only guarantee production efficiency, but also saved the use cost of sampling gun.

Description of drawings

Fig. 1 is the structural representation of the molten steel gas sample rifle of prior art;

Fig. 2 is the structural representation of molten steel gas sample rifle of the present utility model;

Fig. 3 is the structure enlarged diagram of the decompression member of sampling gun of the present utility model.

Embodiment

Further specify the technical solution of the utility model below in conjunction with drawings and Examples.

See also shown in Figure 2, molten steel gas sample rifle 20 of the present utility model comprises the papery sampler 23 that is provided with glass tube 231 in rifle body 21, handle 22 and the front end of steel pipe material, handle 22 is located at the end of rifle body 21, sampler 23 is sheathed on the front end of rifle body 21, and connect and fix by buckle 24 and rifle body 21, this sampling gun 20 also comprises a decompression member 25, and these decompression member 25 1 ends are connected at rifle body 21 front ends, and the other end stretches in the sampler 23.Please in conjunction with shown in Figure 3, this decompression member 25 comprises a relief pipe 251, and relief pipe 251 adopts steel pipe manufacturing, has several vent ports 252 on its outer wall, and the quantity of the vent port 252 among Fig. 3 is four, and radially evenly offers along the same of relief pipe 251.Be disposed with a gasket seal 253 in relief pipe 251 inside of vent port 252 1 sides and be used to reduce the high-temperature insulation resin 254 that heat is transmitted.And be provided with male connection 255 in relief pipe 251 ends of a side of high-temperature insulation resin 254, and insert in rifle body 21 1 ends, fixing by being threaded.Need to prove at this, after high-temperature insulation resin 254 is poured in the relief pipe 251, relief pipe 251 is inverted baking makes its curing, and cooling at normal temperatures.

The use principle of this sampling gun 20 is, after the sampler 23 of sampling gun 20 is inserted molten steel, the high-temperature gas that the vent port 252 of relief pipe 251 can produce sampler 23 burnings of when sampling is discharged, reduced the pressure in the rifle body 21, thereby guarantee that molten steel effectively enters in the glass tube 231, avoid occurring phenomenons such as short sample, pore or empty sample, improved the success ratio of sampling greatly, success ratio can be up to 90%, thereby reduced the sampling number of times, guarantee production efficiency, also reduced the consumption of sampler 23, saved cost.

Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the utility model, and be not to be used as qualification of the present utility model, as long as in connotation scope of the present utility model, all will drop in claims scope of the present utility model variation, the modification of the above embodiment.

Claims

1. molten steel gas sample rifle, this sampling gun comprises the papery sampler that is provided with glass tube in rifle body, handle and the front end, and handle is located at the end of rifle body, and sampler is sheathed on the front end of rifle body, and connects and fixes by buckle and rifle body, it is characterized in that:

This sampling gun also comprises a decompression member, and this decompression member one end is connected at rifle body front end, and the other end stretches in the sampler.

2. molten steel gas sample rifle as claimed in claim 1 is characterized in that:

3. molten steel gas sample rifle as claimed in claim 2 is characterized in that:

4. as claim 2 or 3 described molten steel gas sample rifles, it is characterized in that: