CN200989859Y

CN200989859Y - Sampling gun with closing device

Info

Publication number: CN200989859Y
Application number: CN 200620049468
Authority: CN
Inventors: 丁停根; 董威; 陈溶
Original assignee: Shanghai Baosteel Industry Inspection Corp
Current assignee: Shanghai Baosteel Industry Inspection Corp
Priority date: 2006-12-25
Filing date: 2006-12-25
Publication date: 2007-12-12
Anticipated expiration: 2016-12-25

Abstract

The utility model discloses a sampling gun with a sealing device; the sampling gun includes a filter sleeve pipe and a sampling pipe; the sealing device includes a sealing part and a flange sleeve pipe; the sealing part and the flange sleeve pipe are arranged on the sampling pipe of the sampling gun and at the rear of the filter sleeve pipe of the sampling gun; the sealing part is a short pipe, of which one end is provided with a flange disc; the flange sleeve pipe is also a short pipe, of which two ends are respectively provided with flange discs: one is large flange disc and the other one is small flange disc; the end with the large flange disc faces to the filter sleeve pipe and the end with the small flange disc is matched and connected with one end of the sealing part with the flange disc. The utility model can insure the enclosing sampling in process of the pipeline sampling, in particular to the pipeline sampling with harmful gas, prevents the gas leakage of the harmful gas in the pipeline sampling process, and insures the safety of the operators.

Description

The sampling rifle of band obturator

Technical field

The utility model relates to the environmental monitoring technology field, specifically, relates to a kind of sampling rifle that is used for the band obturator in environmental monitoring technology field.

Background technology

Requirement according to the national standard of smoke dust sampling (but present is measured and the gaseous contaminant method of sampling in the GB/T 16157-1996 Concentration in Fixed Pollutants Source), in order from pipeline, to obtain representational smoke sample, will be to different-diameter pipeline measuring point by the pointwise isokinetic sampling of homalographic circle ring center's point, the isokinetic sampling is divided into predicted velocity method, pitot tube parallel method, kinetic pressure balancing method, four kinds of method of samplings of static balance method.At present domesticly measure institute at pipeline pollution source particle and use equipment to be the parallel smoke dust sampling instrument of pitot tube, by to dust-laden amount of collected and sampling volume in the pipeline and each parametric measurement, draw the particle concentration in the pipeline gas, the technological deficiency of this equipment is the difficult sealing in sampling pipe and tested pipeline gaging hole place.

Carry the pipeline particle of toxic gas to detect for positive-pressure type, must prevent that harmful gas from overflowing carrying out sample collecting under the sealing state fully, the personnel that cause injure.In pipeline particle mensuration process, sampling pipe and valve pipe carry out the capture and the pipeline gas parameter testing of particle in the pipeline after carrying out close blocking up with materials such as hard waste, rubbers at present.Because condition restriction such as sampling pipe and valve pipe sealing are bad, can only carry out the capture of particle and the detection of each parameter to point in the gas piping, both can't carry out the pointwise isokinetic sampling, cause sample collecting not possess representativeness, when carrying out the particle sampling, cause poisonous gas leakage again, threaten personal safety.

Summary of the invention

Technical problem to be solved in the utility model is for sum of errors harmful gas that prevent to sample rifle and tested pipeline gaging hole place's poisonous gas leakage and harmful gas pipeline move the sampled result that sampling causes life to be injured, the utility model provides a kind of sampling rifle that has seal, flange sleeve connection dress, sampling rifle and tested pipeline gaging hole is under the sealing condition samples.

For solving the problems of the technologies described above, the utility model provides a kind of sampling rifle with packoff, and the sampling rifle comprises filter cylinder sleeve pipe and sampling pipe, and an end of sampling pipe racks elbow is the sampling mouth of pipe, is the front end of sampling rifle.Packoff comprises seal and flange sleeve, seal and flange sleeve be installed in the sampling rifle sampling pipe on, be positioned at the sampling rifle the filter cylinder sleeve pipe after, wherein: seal, for holding the short tube of tool ring flange one by one; Flange sleeve also is a short tube, and respectively there is ring flange at these pipe two ends, and this two ring flange is small one and large one, and an end of the big ring flange of tool is towards the filter cylinder sleeve pipe, and an end of tool small flange plate then is connected with the flanged dish one end coupling of seal in addition.

Between above-mentioned seal and the flange sleeve flange connecting dish rubber washer is arranged, seal short tube inwall is provided with rubber band, and seal and sampling pipe are nested hermetically.

Because the utility model has been taked technique scheme, this the utility model can guarantee airtight sampling in gas pipeline is sampled especially harmful gas pipeline sampling process, prevent that harmful gas pipeline sampling process gas from leaking, guarantee operating personnel's safety, and can satisfy the requirement sampling of national standard (visual thing is measured and the gaseous contaminant method of sampling in the GB/T 16157-1996 Concentration in Fixed Pollutants Source), thereby avoid the accuracy and the life injury of poisonous gas leakage influence sampling.

Description of drawings

Fig. 1 is the sampling rifle sectional view of band obturator;

Fig. 2 is the seal side cutaway view;

Fig. 3 is the seal front view;

Fig. 4 is the flange sleeve side cutaway view;

Fig. 5 is the flange sleeve front view.

Embodiment

The utility model is described in further detail below in conjunction with drawings and embodiments:

Referring to figs. 1 to 5, be a kind of sampling rifle with packoff, the sampling rifle comprises filter cylinder sleeve pipe 2 and sampling pipe 1, an end of sampling pipe 1 band elbow is the sampling mouth of pipe, is the front end of sampling rifle.Packoff comprises seal 4 and flange sleeve 3 three parts, and seal 4 and flange sleeve 3 are installed on the sampling pipe 1 of sampling rifle, be positioned at the filter cylinder sleeve pipe 2 of sampling rifle after, wherein seal 4 is for holding the short tube 6 of tool ring flange 11 one by one; Flange sleeve 3 wherein, also be a short tube 8, respectively there is ring flange at these pipe two ends, and this two ring flange is small one and large one, one end of the big ring flange 9 of tool will join with the flue gaging hole towards filter cylinder sleeve pipe 2, and an end of tool small flange plate 12 then is connected with the flanged dish 11 1 ends coupling of seal in addition.There is rubber washer in ring flange 11 outsides of seal 4, thus this rubber washer between ring flange 11 and small flange plate 12, seal 4 short tube inwalls have rubber band, seal 4 and sampling pipe 1 are nested hermetically.

Baosteel iron-smelter TRT blast furnace gas, Ministry of Energy's coal gas of converter are the positive-pressure type gas pipeline, and piped gas content is respectively more than 40% and 70%.Environmental monitoring station of diagnosis portion gas dirt operation area is when the dustiness of carrying out above-mentioned pipeline, water cut testing process, because there is the technological deficiency of the difficult sealing in sampling pipe and tested pipeline gaging hole place in sample devices at present, when sampling pipe and valve pipe sealing, can only carry out shutoff with materials such as hard wastes, cause a large amount of leakages of piped gas, seriously threaten sample man author's job safety, there is job safety hidden danger, also do not satisfy national standard (GB/T 16157-1996) is implemented the transfer point sampling to the inspection of pipeline dustiness requirement simultaneously.When this utility model was used for this gas pipeline, seal 4 adopted the aluminium alloy seal, and flange sleeve 3 adopts the steel flange sleeve pipe.The sampling rifle of this band obturator has been guaranteed the gas pipeline airtight sampling in the harmful gas pipeline sampling process of sampling especially, satisfied national standard (GB/T 16157-1996) requirement that transfer point is sampled has been implemented in the inspection of pipeline dustiness, prevent effectively simultaneously that harmful gas pipeline sampling process gas from leaking, cancel job hidden danger is guaranteed operating personnel's safety.Thereby avoid the accuracy and the life injury of poisonous gas leakage influence sampling.

The utility model can be used for the smoke dust sampling of all kinds of flues (especially harmful gas), and fabulous using value is arranged.

Claims

1, a kind of sampling rifle with packoff is characterized in that, the sampling rifle comprises filter cylinder sleeve pipe and sampling pipe, packoff comprises seal and flange sleeve, seal and flange sleeve be installed in the sampling rifle sampling pipe on, be positioned at the sampling rifle the filter cylinder sleeve pipe after, wherein:

Seal is for holding the short tube of tool ring flange one by one;

Flange sleeve also is a short tube, and respectively there is ring flange at these pipe two ends, and this two ring flange is small one and large one, and an end of the big ring flange of tool is towards the filter cylinder sleeve pipe, and an end of tool small flange plate then is connected with the flanged dish one end coupling of seal in addition.

2, the sampling rifle of band packoff according to claim 1 is characterized in that, between described seal and the flange sleeve flange connecting dish rubber washer is arranged, and seal short tube inwall is provided with rubber band.

3, the sampling rifle of band packoff according to claim 1 is characterized in that, described seal and sampling pipe are nested hermetically.