CN203178116U

CN203178116U - Needle cylinder sampler

Info

Publication number: CN203178116U
Application number: CN 201320155457
Authority: CN
Inventors: 陆远
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-04-01
Filing date: 2013-04-01
Publication date: 2013-09-04
Anticipated expiration: 2023-04-01

Abstract

The utility model provides a needle cylinder sampler. At present, a needle cylinder sampling method is commonly used for measuring indexes such as non-methane hydrocarbon, and a sample taken by the method needs to be rapidly measured; otherwise, the measuring result error is likely to go large slightly if the sample is placed for a period of time. The needle cylinder sampler provided by the utility model comprises a sampling cylinder (1), wherein one end of the sampling cylinder is connected with a tee joint (2), the tee joint is respectively connected with an air inlet pipe (3) and an air outlet pipe (4), a one-way air inlet valve (11) is arranged at a pipe opening of the air inlet pipe, a one-way air outlet valve (5) is arranged at the pipe opening of the air outlet pipe, a piston (6) is arranged in the sampling cylinder and is connected with a piston rod (7), the piston rod is connected with a sleeve (8) sleeved outside the sampling cylinder, and the sleeve is connected with the sampling cylinder through a thread. The needle cylinder sampler is used in sampling operation for measuring the indexes such as the non-methane hydrocarbon.

Description

The syringe sampler

Technical field

The utility model relates to a kind of gas and detects employed sampler, is specifically related to a kind of syringe sampler.

Background technology

Generally adopt the syringe sampling method for indexs such as measuring NMHC at present, that is: behind the suction gas, cap on the pin muzzle, afterbody are fixed with rubber band, directly inject the chromatography of gases analysis during detection.

Because the cap sealed of overlapping on the pin mouth is poor, the fixing factor such as insecure of afterbody bungee, entrained air very easily in the sample of sampling back is so the sample of taking with this method needs mensuration as early as possible.Easily cause measuring result error bigger than normal after placing a period of time.

Summary of the invention

The purpose of this utility model is that the problem at above-mentioned existence provides a kind of syringe sampler, and good airproof performance is difficult for sneaking into other gas, and measurement result accurately and reliably.

Above-mentioned purpose is achieved through the following technical solutions:

The syringe sampler, comprise sampler barrel, one end of described sampler barrel connects threeway, described threeway connects draft tube and escape pipe respectively, and the mouth of pipe of described draft tube is installed breather cheek valve, and the mouth of pipe of described gas outlet is installed unidirectional air outlet valve, piston is installed in described sampler barrel the inside, described piston connects piston rod, and described piston rod adapter sleeve is contained in the outer sleeve of described sampler barrel, between described sleeve and the described sampler barrel by being threaded.

Described syringe sampler, the mouth of pipe of described draft tube and the mouth of pipe of described escape pipe are respectively arranged with block.

Described syringe sampler has elastic seal ring between described threeway and the described sampler barrel.

Beneficial effect:

1. the utility model is provided with draft tube and escape pipe separately, and the mouth of pipe in draft tube is installed breather cheek valve, at the mouth of pipe of gas outlet unidirectional air outlet valve is installed, sampler barrel inner space and outside contacting have effectively been completely cut off, avoid air to enter sampler barrel internal contamination gas sampled, guarantee the accuracy of testing result.

2. the utility model is contained in the outer sleeve of sampler barrel by the piston rod adapter sleeve, between sleeve and the sampler barrel by being threaded, turnbarrel just can be twitched piston like this, piston rod slides and causes the gas sample to pollute when avoiding maloperation compression piston or sampler barrel internal pressure to increase, simpler than the operation of existing cover bungee, and can guarantee that sample do not receive pollution.

3. the utility model is respectively arranged with block at the mouth of pipe of draft tube and the mouth of pipe of escape pipe, and further the sample that guarantees is not received pollution.

Description of drawings:

Fig. 1, structural representation of the present utility model.

Embodiment

Below in conjunction with the drawings and specific embodiments, further illustrate the utility model.

Embodiment 1:

As shown in Figure 1: syringe sampler of the present utility model, comprise sampler barrel 1, one end of described sampler barrel connects threeway 2, described threeway connects draft tube 3 and escape pipe 4 respectively, the mouth of pipe of described draft tube is installed breather cheek valve 11, the mouth of pipe of described gas outlet is installed unidirectional air outlet valve 5, piston 6 is installed in described sampler barrel the inside, described piston connects piston rod 7, described piston rod adapter sleeve is contained in the outer sleeve 8 of described sampler barrel, between described sleeve and the described sampler barrel by being threaded.

Embodiment 2:

Described syringe sampler, the mouth of pipe of described draft tube and the mouth of pipe of described escape pipe are respectively arranged with block 9.

Embodiment 3:

Described syringe sampler has elastic seal ring 10 between described threeway and the described sampler barrel.

Using method:

During sampling, open the block at draft tube place, turnbarrel drives the piston motion thereby sleeve drives piston rod, and the block on the draft tube on the bonnet is finished in sampling, because the double action of breather check valve and block is arranged, avoids the gas in the sampler barrel contaminated.

By above-mentioned description, the related work personnel can carry out various change and modification fully in the scope that does not depart from this utility model technological thought.Unaccomplished matter of the present utility model belongs to those skilled in the art's common practise.

Claims

1. syringe sampler, comprise sampler barrel, it is characterized in that: an end of described sampler barrel connects threeway, described threeway connects draft tube and escape pipe respectively, and the mouth of pipe of described draft tube is installed breather cheek valve, and the mouth of pipe of described gas outlet is installed unidirectional air outlet valve, piston is installed in described sampler barrel the inside, described piston connects piston rod, and described piston rod adapter sleeve is contained in the outer sleeve of described sampler barrel, between described sleeve and the described sampler barrel by being threaded.

2. syringe sampler according to claim 1, it is characterized in that: the mouth of pipe of described draft tube and the mouth of pipe of described escape pipe are respectively arranged with block.

3. syringe sampler according to claim 1 and 2 is characterized in that: have elastic seal ring between described threeway and the described sampler barrel.