CN214173891U

CN214173891U - Gas sampling device

Info

Publication number: CN214173891U
Application number: CN202022613004.0U
Authority: CN
Inventors: 杨婷; 侯迎利; 罗莲英; 鲁学正; 朱文庆; 肖文; 张扬; 李红玲; 陈雪芝
Original assignee: Xinjiang Huatai Heavy Chemical Co ltd; Xinjiang Zhongtai Chemical Co Ltd
Current assignee: Xinjiang Huatai Heavy Chemical Co ltd; Xinjiang Zhongtai Chemical Co Ltd
Priority date: 2020-11-12
Filing date: 2020-11-12
Publication date: 2021-09-10
Anticipated expiration: 2030-11-12

Abstract

The utility model relates to a gaseous sampling technical field specifically discloses a gaseous sampling device, include: the gas extractor, the unidirectional straight-through plug component used for unidirectional flow of gas and the gas pipe; the air extractor is of an injector structure and comprises a nipple, a cylinder, a piston and a piston shaft, wherein the nipple is arranged at the bottom of the cylinder, and the piston is arranged in the cylinder and connected with the piston shaft; the air extractor is communicated with the air outlet end of the one-way through connection component through the nipple, and the air inlet end of the one-way through connection component is communicated with the air delivery pipe. The embodiment of the utility model provides a sampling gas spills over or the gas that the condition such as outside air entering leads to is impure when having prevented gas sampling, has guaranteed the accuracy of gas analysis result, has both prevented that the air admission gas-supply pipe from influencing the analysis result, also need not hold between the fingers the gas-supply pipe mouth of pipe with a single hand alone, can carry out bimanualness, has ensured the safety of device, and the device also facilitates the use very much and carries moreover.

Description

Gas sampling device

Technical Field

The utility model relates to a gaseous sampling technical field especially relates to a gaseous sampling device.

Background

Among the prior art, chemical plant or chemical industry laboratory etc. are carrying out the chemical gas project analysis, carry out the sample of gas sample with the syringe usually, when the sample, still need prepare red rubber cap, instrument such as gas-supply pipe cooperate syringe sampling operation, when using, cut one end of red rubber cap and be used for connecting gas-supply pipe and syringe, personnel are when using the gas-supply pipe to carry out gas replacement, with the syringe from the back of taking off on the gas-supply pipe, personnel hold between the fingers the gas-supply pipe mouth to prevent the air admission gas-supply pipe, the operation has following drawback like this: 1. if the mouth of the air delivery pipe is not tightly pinched by a person, air enters the air delivery pipe, so that the result of analyzing the impurity of the gas is inaccurate; 2. the replacement operation of the gas by one hand is inconvenient, and the risk of damaging the injector and the like exists; 3. the red rubber cap slides into the gas pipe easily to block the gas pipe, which brings inconvenience to sampling, therefore, the prior art can not prevent gas loss when gas sampling is carried out, resulting in that the analysis gas is not representative.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides a gas sampling device for can not prevent the problem of gaseous loss when solving among the prior art gas sampling.

According to an aspect of the embodiments of the present invention, there is provided a gas sampling device, including:

the gas extractor, the unidirectional straight-through plug component used for unidirectional flow of gas and the gas pipe;

the gas extractor is of an injector structure and comprises a nipple, a cylinder, a piston and a piston shaft, wherein the nipple is arranged at the bottom of the cylinder, and the piston is arranged in the cylinder and connected with the piston shaft; the air extractor is communicated with the air outlet end of the one-way through connection component through the nipple, and the air inlet end of the one-way through connection component is communicated with the air delivery pipe.

The utility model discloses beneficial effect does: the gas extractor and the gas pipe of the injector structure are communicated into a whole through the one-way through connection component, the one-way through connection component only supports the one-way flow of gas to avoid impure gas to be analyzed, therefore, when the device performs gas sampling, the gas pipe only needs to be connected into a sampling pipe orifice or a sampling space, gas can enter a cylinder of the gas extractor from the gas pipe and the one-way through connection component in sequence by pulling a piston shaft of the gas extractor, thereby preventing impure gas caused by the conditions of gas sampling overflow or external air entering and the like, namely preventing the problem that the gas is easy to escape during gas sampling, ensuring the accuracy of gas analysis results by only using the gas extractor to extract gas but not entering the gas pipe when personnel replaces gas, simultaneously preventing the air from entering the gas pipe to influence the analysis results, the pipe orifice of the gas pipe does not need to be pinched by one hand independently, so that the operation of two hands can be carried out, the safety of the device is ensured, and the device is very convenient to use and carry.

On the basis of the technical scheme, the utility model discloses can also do as follows the improvement:

optionally, the one-way through connector component includes a one-way valve and a pumping airtight sealing cannula, the outer diameter of the pumping airtight sealing cannula matches with the inner diameter of the air outlet port of the one-way valve, and the pumping airtight sealing cannula is inserted into the air outlet port, and the inner diameter of the pumping airtight sealing cannula matches with the outer diameter of the nipple and is sleeved into the nipple.

The embodiment of the utility model discloses the beneficial effect who adopts above-mentioned alternative does: adopt take out airtight sealing-in intubate and seal up the intercommunication with the nipple and the check valve on the gas extractor through the gas extractor, because the check valve only supports gaseous one-way flow in order to prevent the gas loss for gaseous sample all can not lead to the sample gas to spill over or the outside air gets into during with the replacement, convenient operation, during the gas replacement, only need with the nipple follow take out airtight sealing-in intubate extract can, guaranteed that processes such as gas sampling and replacement do not have the interference or the influence of other gases.

Optionally, the one-way straight-through connector component further comprises an air-tight sealing insertion tube, wherein the outer diameter of the air-tight sealing insertion tube is matched with the inner diameter of the air inlet of the one-way valve and is inserted into the air inlet, and the outer diameter of the air-tight sealing insertion tube is matched with the inner diameter of the air pipe and is inserted into one end of the air pipe.

The embodiment of the utility model discloses the beneficial effect who adopts above-mentioned alternative does: adopt defeated airtight sealing-in intubate with the sealed switch-on of soft gas-supply pipe of material and check valve, when carrying out gas sampling, only need with the gas-supply pipe other end insert sample mouth of pipe or sample space can, need not to increase extra instrument or operation, also need not to hold between the fingers the gas-supply pipe mouth of pipe by a hand alone after the gas sampling is accomplished, can carry out the bimanualness, ensured the safety of device, can not cause the jam scheduling problem to the gas-supply pipe.

Optionally, the air-extracting sealing patch tube comprises a polytetrafluoroethylene tube, and the air-conveying sealing patch tube comprises a stainless steel tube.

The embodiment of the utility model discloses the beneficial effect who adopts above-mentioned alternative does: the polytetrafluoroethylene tube and the stainless steel tube have strong corrosion resistance, are not easy to be corroded and damaged by chemical gas to be sampled, and further ensure the purity of the sampled gas.

Optionally, the gas extractor further comprises a piston handle disposed at an end of the piston shaft remote from the piston.

The embodiment of the utility model discloses the beneficial effect who adopts above-mentioned alternative does: the piston handle is used for facilitating the people to pull the piston of the gas extractor to extract gas when the gas sampling device performs gas sampling.

Optionally, the cylinder has a capacity of 20ml, 50ml and 100 ml.

The embodiment of the utility model discloses the beneficial effect who adopts above-mentioned alternative does: the sampling personnel can select cylinders with different specifications and capacities scales to contain gas according to the amount of the gas to be sampled.

The above description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the present invention is given.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

fig. 1 is a schematic structural diagram of a gas sampling device according to an embodiment of the present invention;

FIG. 2 is a schematic view of the one-way straight-through connector assembly communicating with the gas pipe and the gas extractor.

In the figure: 1-gas extractor, 11-piston handle, 12-piston shaft, 13-piston, 14-cylinder, 15-nipple, 2-one-way straight-through connecting and inserting component, 20-one-way valve, 201-gas inlet port, 202-gas outlet port, 21-gas-extracting airtight sealing and inserting pipe, 22-gas-conveying airtight sealing and inserting pipe and 3-gas conveying pipe.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

An embodiment of the present invention provides a gas sampling device, please refer to fig. 1-2, including:

the gas extractor 1, a one-way straight-through plug component 2 for one-way flow of gas and a gas pipe 3. The gas extractor 1 is of an injector structure, a sampling person can select the gas extractor 1 made of glass or plastic materials and comprises a nipple 15, a cylinder 14, a piston 13 and a piston shaft 12, the nipple 15 is arranged at the bottom of the cylinder 14, the piston 13 is arranged in the cylinder 14 and is connected with the piston shaft 12, the gas extractor 1 is communicated with the gas outlet end of the one-way through connection component 2 through the nipple 15, and the gas inlet end of the one-way through connection component 2 is communicated with the gas conveying pipe 3. Specifically, the gas extractor 1 in this embodiment further includes a piston handle 11 disposed at an end of the piston shaft 12 far from the piston 13, where the piston handle 11 is used to facilitate a person pulling the piston 13 of the gas extractor 1 by hand to extract gas when the gas sampling device performs gas sampling. The capacity of the cylinder comprises the models of 20ml, 50ml, 100ml and the like, so that a sampler can conveniently select cylinders with different specifications and capacity scales to contain gas according to the quantity of the gas to be sampled.

The embodiment of the utility model connects the gas extractor 1 of the injector structure and the gas pipe 3 into a whole through the one-way through connection component 2, the one-way through connection component 2 only supports the one-way flow of the gas to avoid the impure gas to be analyzed, therefore, when the device carries out gas sampling, only the gas pipe 3 needs to be connected into a sampling pipe orifice or a sampling space, the gas can sequentially enter the cylinder 14 of the gas extractor 1 from the gas pipe 3 and the one-way through connection component 2 by pulling the piston shaft 12 of the gas extractor 1, thereby preventing the impure gas caused by the situations of gas sampling overflow or external air entering, and the like, namely preventing the easy escape of the gas during gas sampling, ensuring the accuracy of the gas analysis result by only extracting the gas with the gas extractor 1 but not entering the gas during gas sampling, simultaneously preventing the air from entering the gas pipe 3 to influence the analysis result during gas replacement, the pipe orifice of the gas pipe 3 does not need to be pinched by one hand independently, so that the operation of two hands can be carried out, the safety of the device is ensured, and the device is very convenient to use and carry.

Referring to fig. 1-2, specifically, the one-way through plug component 2 of the embodiment of the present invention includes a one-way valve 20 and a pumping airtight sealing insertion tube 21, an outer diameter of the pumping airtight sealing insertion tube 21 matches an inner diameter of an air outlet port 202 of the one-way valve 20, the pumping airtight sealing insertion tube 21 is inserted into the air outlet port 202, and the inner diameter of the pumping airtight sealing insertion tube 21 matches an outer diameter of the nipple 15 and is sleeved into the nipple 15. The one-way straight-through plug component 2 further comprises an air-input sealing insertion tube 22, the outer diameter of the air-input sealing insertion tube 22 is matched with the inner diameter of the air inlet port 201 of the one-way valve 20 and is inserted into the air inlet port 201, and the outer diameter of the air-input sealing insertion tube 22 is matched with the inner diameter of the air pipe 3 and is inserted into one end of the air pipe 3. Referring to fig. 2, in order to ensure the sealing performance of the entire one-way through connector 2 and further prevent the gas from escaping, the air-tight sealing cannula 21 is inserted into the air outlet port 202 of the one-way valve 20 by about one centimeter, and the air-tight sealing cannula 22 is inserted into the air inlet port 201 of the one-way valve 20 by about one centimeter. Preferably, the utility model discloses take out airtight sealing-in intubate 21 is the polytetrafluoroethylene pipe, and gas transmission sealing-in intubate 22 is the stainless steel pipe, because polytetrafluoroethylene pipe and stainless steel pipe corrosion resistance are strong, and difficult chemical gas that is treated the sample corrodes and destroys to the gaseous purity of sample has further been ensured. The embodiment of the utility model adopts the airtight sealing intubation tube 21 to seal and communicate the gas extractor 1 with the one-way valve 20 through the nipple 15 on the gas extractor 1, because the one-way valve 20 only supports the one-way flow of gas to prevent the gas loss, the gas sampling and replacement can not cause the overflow of the sampling gas or the entrance of the external air, the operation is convenient, when the gas is replaced, only the nipple 15 needs to be pulled out from the airtight sealing intubation tube 21, the gas sampling and replacement process is ensured to have no interference or influence of other gases, simultaneously, the airtight sealing intubation tube 22 is adopted to seal and communicate the gas pipe 3 with the one-way valve 20, when the gas sampling is carried out, only the other end of the gas pipe 3 needs to be connected into the sampling pipe orifice or the sampling space, no extra tool or operation is needed, after the gas sampling is finished, one hand is not needed to hold the pipe orifice of the gas pipe 3 alone, can carry out the bimanualness, ensured the safety of device, can not cause the jam scheduling problem to gas-supply pipe 3.

Use the embodiment of the utility model provides a when gas sampling device carries out gas sampling, piston 13 in the gas extractor 1 of syringe structure is in 0 position of scale mark, insert sample mouth of pipe or sample space with gas-supply pipe 3, hold piston 13 of the gaseous extractor 1 of 11 pulling of piston handle, extract nipple 15 from the airtight sealed intubate 21 of taking out of one-way through plug-in components 2 after the gaseous of entering 2/3 in drum 14, promote the piston 13 of gas extractor 1, carry out gaseous replacement with the gas outgoing in the gas extractor 1, guarantee not have the interference or the influence of other gases, after handling the cubic repeatedly like this, the gaseous extractor 1 of the gas sampling device takes sample gas and carries out the analysis and detection, sample gas can not have phenomenons such as suck-back or gas leakage.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The above embodiment numbers of the present invention are only for description, and do not represent the advantages and disadvantages of the embodiments.

While the embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many modifications may be made by one skilled in the art without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. A gas sampling device, comprising:

2. The gas sampling device of claim 1, wherein the one-way pass-through connector component comprises a one-way valve and a pump-in hermetic sealing cannula, wherein the pump-in hermetic sealing cannula has an outer diameter matching an inner diameter of the outlet port of the one-way valve and is inserted into the outlet port, and the pump-in hermetic sealing cannula has an inner diameter matching an outer diameter of the nipple and is sleeved into the nipple.

3. The gas sampling device of claim 2, wherein the one-way pass-through connector component further comprises an input airtight sealing insertion tube, wherein the outer diameter of the input airtight sealing insertion tube is matched with the inner diameter of the gas inlet port of the one-way valve and is inserted into the gas inlet port, and the outer diameter of the input airtight sealing insertion tube is matched with the inner diameter of the gas delivery pipe and is inserted into one end of the gas delivery pipe.

4. The gas sampling device of claim 3, wherein the suction seal patch tube comprises a polytetrafluoroethylene tube and the gas delivery seal patch tube comprises a stainless steel tube.

5. The gas sampling device of claim 1, wherein the gas extractor further comprises a piston shank disposed at an end of the piston shaft distal from the piston.

6. The gas sampling device of claim 1, wherein the cylinder comprises a capacity of 20ml, 50ml, and 100 ml.