CN112461608A

CN112461608A - Double-rod piston type adjustable gas quantitative sampler

Info

Publication number: CN112461608A
Application number: CN202011298479.3A
Authority: CN
Inventors: 方火荣
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-18
Filing date: 2020-11-18
Publication date: 2021-03-09

Abstract

The invention discloses a double-rod piston type adjustable gas quantitative sampler which comprises a sampling cylinder, wherein a sampling groove is arranged in the sampling cylinder, an air inlet groove is formed in the bottom of the sampling groove, a connecting pipe is hermetically and rotatably sleeved at one end, located in the air inlet groove, of the sampling cylinder, a sampling piston is hermetically and slidably mounted in the sampling groove, an air inlet piston is hermetically and slidably mounted in the air inlet groove, a hollow rod is mounted on one side, away from the connecting pipe, of the sampling piston, and a solid rod is mounted on one side, away from the connecting pipe, of the air inlet piston. According to the invention, the sampling piston and the air inlet piston are operated to sample and send samples through the hollow rod and the solid rod, so that impurity gas is prevented from being mixed during sampling and sending samples, the condition of a large amount of gas residue can be avoided, the detection accuracy is improved, the purity of the sampled gas is further improved through the connecting pipe, and the impurity gas is prevented from being mixed.

Description

Double-rod piston type adjustable gas quantitative sampler

Technical Field

The invention relates to the field of gas sampling tubes, in particular to a double-rod piston type adjustable gas quantitative sampler.

Background

The gas conveying is a fluid conveying method, gas in a pipeline needs to be sampled and checked in the conveying process, whether the conveyed gas meets the standard or not is analyzed, and parameters such as impurity and component content in the gas are recorded, so that the gas conveying state is convenient to adjust in time.

The existing gas pipeline sampler is usually a bag sampler or a can sampler, and bag and can easily cause external miscellaneous gas to be mixed when sampling, and the passive form after sampling is sent into the detector comparatively inconveniently, and the gas pipeline sampler can not be discharged after the pressure of the sampled gas is reduced, generates more gas residue, and the reduction of the detected sample causes poor precision.

Disclosure of Invention

The invention aims to solve the defects that external miscellaneous gas is easy to mix in, the inspection is inconvenient, more residues are easy to occur, and the inspection precision is reduced in the prior art, and provides a double-rod piston type adjustable gas quantitative sampler.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides an adjustable gaseous ration sampler of double-rod piston, includes the sampler barrel, be equipped with the sample cell in the sampler barrel, the air inlet duct has been seted up to the bottom in sample cell, the sealed rotation cover in one end that the sampler barrel is located the air inlet duct is equipped with the connecting pipe, the sealed slidable mounting in sample cell has the sample piston, the sealed slidable mounting in air inlet duct has the air inlet piston, the one side that the connecting pipe was kept away from to the sample piston is installed hollow rod, the one side that the connecting pipe was kept away from to the air inlet piston is installed solid pole, the sealed slip of one end that solid pole is close to the sample piston is inserted and is established in hollow rod and extend to the outside in sample cell, the thread bush is installed to the slotted.

Preferably, the length of the hollow rod is greater than the depth of the sampling groove, and the length of the solid rod is greater than the sum of the depths of the sampling groove and the air inlet groove.

Preferably, the sampling piston has a diameter greater than a diameter of the intake piston.

Preferably, the connecting pipe includes that sealed rotation cover establishes the sampling pipe on the sampling tube, the ripple blast pipe is installed to the one end that the sampling tube was kept away from to the sampling pipe, the sampling tube is installed to the one end that the sampling tube was kept away from to the ripple blast pipe.

Preferably, a plurality of one-way pressure holes are formed in the bottom of the air inlet groove, and one-way sampling needle tubes are mounted at one ends, located at the plurality of one-way pressure holes, of the sampling cylinder.

Preferably, the threaded adjusting pipe is not in contact with the inner wall of the sampling groove.

The invention has the following beneficial effects:

1. through hollow rod and solid pole promote respectively before the sampling to take a sample the piston and the air discharge of air in with sample groove and air inlet tank with the piston that admits air, reduce the possibility that miscellaneous gas gets into air inlet tank and sample groove, increase the gaseous purity of sample for the testing result is more accurate.

2. Connect the sample end of conveyer pipe through the connector, compress the ripple blast pipe and make the connector shrink after putting the sample end on with the sampling tube, then load onto the sample with the sampling tube again, compress the ripple blast pipe and can discharge a large amount of miscellaneous gas of inside, further increase the gaseous purity of sample, increase the accuracy that detects promptly.

3. The sliding distance of the sampling piston can be controlled by rotating the thread adjusting pipe, the sampling amount can be adjusted through the thread adjusting pipe, adjustable quantitative sampling is achieved, the thread adjusting pipe is installed through the thread sleeve, the thread adjusting pipe is not in contact with the inner wall of the sampling groove, the sampling groove can be protected from being abraded, air tightness protectiveness is improved, and impurities are prevented from entering the sampling groove.

4. Through solid pole and hollow rod control sample piston and air inlet piston exhaust, then can receive high-pressure gas when the sample and promote air inlet piston and sample piston until being blocked by the screw thread control tube, need not manual bleeding, it is more simple and convenient swift, and when the censorship, promote hollow pole and solid pole and will take a sample gas and discharge completely, avoid appearing a large amount of gas and remain and influence the testing result, increase the accuracy that detects.

In conclusion, the sampling piston and the gas inlet piston are operated to sample and send samples through the hollow rod and the solid rod, so that impurity gas is prevented from being mixed in the sampling and sending samples, the condition of large amount of gas residue can be avoided, the detection accuracy is improved, the purity of the sampled gas is further improved through the connecting pipe, and the impurity gas is prevented from being mixed in.

Drawings

FIG. 1 is a schematic structural diagram of a double-rod piston type adjustable quantitative gas sampler according to the present invention;

fig. 2 is an enlarged view of a connecting pipe part of the double-rod piston type adjustable gas quantitative sampler provided by the invention.

In the figure: 1 sampling cylinder, 11 sampling grooves, 12 air inlet grooves, 13 one-way pressure holes, 14 one-way sampling needle tubes, 2 sampling pistons, 21 hollow rods, 3 air inlet pistons, 31 solid rods, 4 threaded sleeves, 41 threaded adjusting pipes, 5 connecting pipes, 51 sampling pipes, 52 sampling pipes and 53 corrugated exhaust pipes.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-2, an adjustable gaseous ration sampler of double-rod piston, including sampler barrel 1, be equipped with sample groove 11 in the sampler barrel 1, air inlet duct 12 has been seted up to sample groove 11's bottom, the sealed rotation cover of one end that sampler barrel 1 is located air inlet duct 12 is equipped with connecting pipe 5, sealed slidable mounting has sample piston 2 in the sample groove 11, sealed slidable mounting has air inlet piston 3 in air inlet duct 12, one side that connecting pipe 5 was kept away from to sample piston 2 installs hollow rod 21, one side that connecting pipe 5 was kept away from to air inlet piston 3 installs solid bar 31, the one end that solid bar 31 is close to sample piston 2 is sealed to slide and is inserted and establish in hollow rod 21 and extend to the outside of sample groove 11, thread bush 4 is installed to the slotted hole of sample groove 11, thread adjusting pipe 41 is installed.

The length of hollow rod 21 is greater than the depth of sampling groove 11, and the length of solid rod 31 is greater than the sum of the depths of sampling groove 11 and air inlet groove 12, so that hollow rod 21 and solid rod 31 can both operate outside sampling barrel 1, and the flexibility of operation is increased.

The diameter of sample piston 2 is greater than the diameter of air inlet piston 3, and the capacity of sample can be increased to the sample groove 11 at great sample piston 2 place, and the air inlet groove 12 at less air inlet piston 3 place can match with the sample end, conveniently takes a sample, and conveniently carries under the condition that guarantees can a large amount of samples.

Connecting pipe 5 includes that sealed rotation cover establishes the sample inlet pipe 52 on sampler barrel 1, and the one end that sample inlet pipe 52 kept away from sampler barrel 1 is installed ripple blast pipe 53, and sampling pipe 51 is installed to the one end that sample inlet pipe 52 was kept away from to ripple blast pipe 53, can discharge the gas in connecting pipe 5 in a large number through extrusion ripple blast pipe 53, reduces miscellaneous gas and sneaks into, increases the accuracy that detects.

A plurality of one-way pressure holes 13 have been seted up to the tank bottom of air inlet tank 12, one-way sample needle tubing 14 is installed to the one end that sampling barrel 1 is located a plurality of one-way pressure holes 13, one-way sample needle tubing 14 is opposite with one-way circulation direction of one-way pressure hole 13, one-way sample needle tubing 14 can make the gas in the gas transmission pipeline get into air inlet tank 12 and sample groove 11 in, one-way pressure hole 13 can be with the gas escape in air inlet tank 12 and the sample groove 11, and the pressure restriction of one-way pressure hole 13 is greater than one-way sample needle tubing 14, avoid appearing the condition of gas leakage after the sample.

The threaded adjusting pipe 41 is not in contact with the inner wall of the sampling groove 11, so that air leakage caused by mechanical scratch on the inner wall of the sampling groove 11 is avoided.

When the sampling device is used, the hollow rod 21 and the solid rod 31 are pushed, so that the sampling piston 2 and the air inlet piston 3 move to the bottoms of the sampling groove 11 and the air inlet groove 12, the sampling tube 51 is arranged at the sampling end of the gas conveying pipe, then the corrugated exhaust pipe 53 is extruded to exhaust air in the connecting pipe 5, the sampling tube 51 is locked, then the unidirectional sampling needle tube 14 is inserted into the sampling end, so that gas enters the air inlet groove 12 from the unidirectional sampling needle tube 14 to push the air inlet piston 3 to move, so that the solid rod 31 slides in the hollow rod 21, after the air inlet piston 3 contacts the sampling piston 2, the air inlet piston 3 and the sampling piston 2 are pressed to move together, the hollow rod 21 and the solid rod 31 both move outwards until the sampling is blocked by the thread adjusting tube 41 to finish sampling, and the position of the thread adjusting tube 41 in the sampling groove 11 can be changed by rotating the thread adjusting tube 41;

during sample feeding, the hollow rod 21 and the solid rod 31 are pushed in turn, so that the sampling piston 2 and the intake piston 3 completely discharge the sampling gas through the one-way pressure hole 13.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The utility model provides an adjustable gas quantitative sampler of double-rod piston, includes sampler barrel (1), its characterized in that, be equipped with sample groove (11) in sampler barrel (1), inlet channel (12) have been seted up to the bottom of sample groove (11), the sealed rotation cover that is located one end of inlet channel (12) of sampler barrel (1) is equipped with connecting pipe (5), sample groove (11) internal seal slidable mounting has sample piston (2), inlet channel (12) internal seal slidable mounting has inlet piston (3), one side that sample piston (2) kept away from connecting pipe (5) is installed hollow rod (21), one side that inlet piston (3) kept away from connecting pipe (5) is installed solid pole (31), the one end seal that solid pole (31) is close to sample piston (2) is inserted and is established in hollow rod (21) and is extended to the outside of sample groove (11), the slotted hole of sample groove (11) is installed thread bush (4), screw thread adjusting tube (41) is installed to thread bush (4) internal rotation.

2. A double rod piston type adjustable gas quantitative sampler according to claim 1, characterized in that the length of the hollow rod (21) is greater than the depth of the sampling groove (11), and the length of the solid rod (31) is greater than the sum of the depths of the sampling groove (11) and the gas inlet groove (12).

3. A double-rod piston type adjustable gas quantitative sampler according to claim 1, characterized in that the sampling piston (2) has a larger diameter than the intake piston (3).

4. The adjustable gas quantitative sampler of claim 1, wherein the connecting pipe (5) comprises a sample inlet pipe (52) which is hermetically and rotatably sleeved on the sampling cylinder (1), a corrugated exhaust pipe (53) is installed at one end of the sample inlet pipe (52) far away from the sampling cylinder (1), and a sampling pipe (51) is installed at one end of the corrugated exhaust pipe (53) far away from the sample inlet pipe (52).

5. The adjustable gas quantitative sampler of claim 1, wherein the bottom of the gas inlet groove (12) is provided with a plurality of one-way pressure holes (13), and one end of the sampling cylinder (1) at the plurality of one-way pressure holes (13) is provided with a one-way sampling needle (14).

6. A double-rod piston type adjustable quantitative gas sampler as claimed in claim 1, wherein the threaded adjusting tube (41) is not in contact with the inner wall of the sampling groove (11).