CN111289296A - Liquid sampler - Google Patents
Liquid sampler Download PDFInfo
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- CN111289296A CN111289296A CN202010136780.8A CN202010136780A CN111289296A CN 111289296 A CN111289296 A CN 111289296A CN 202010136780 A CN202010136780 A CN 202010136780A CN 111289296 A CN111289296 A CN 111289296A
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- Prior art keywords
- liquid
- pipeline
- sampling
- closed box
- collecting bottle
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/0008—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one medium being in heat conductive contact with the conduits for the other medium
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/34—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending obliquely
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
- G01N2001/1418—Depression, aspiration
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- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Pathology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Health & Medical Sciences (AREA)
- Thermal Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a liquid sampler, which comprises a sampling pipeline, a cooling system and a liquid collecting system, wherein the sampling pipeline is connected with the cooling system; the cooling system comprises a first liquid pipeline and an air pipe sleeved outside the first liquid pipeline; one end of the first liquid pipeline is connected with the sampling pipeline, the other end of the first liquid pipeline is connected with the second liquid pipeline, one end of the air pipe is connected with the negative pressure device, and the other end of the air pipe is provided with a first connecting port; the liquid collecting system comprises a closed box body and a liquid collecting bottle, and a second connecting port hermetically connected with the first connecting port is arranged at the upper end of the closed box body; the opening of the liquid collecting bottle is provided with a sealing plug, the other end of the second liquid pipeline penetrates through one side wall of the closed box body and the sealing plug to extend into the liquid collecting bottle, and the sealing plug is further provided with a vent. The invention can greatly reduce the volatilization of the liquid sample and the diffusion of volatilized gas and peculiar smell in the sampling process, and has the advantages of simple structure, less leakage point, small volume and convenient use and carrying.
Description
Technical Field
The invention belongs to the technical field of chemical production, and particularly relates to a liquid sampler.
Background
In the chemical production and detection processes, a process of extracting a liquid sample is ubiquitous. The liquid samples related to chemical production are high-temperature liquids which are volatile, strong in corrosivity and large in pungent smell, and the sampling device used in the petroleum industry, the chemical industry and the natural gas industry at present is a box-type sampling device which is composed of a cooling system, a pressure reduction system, a gas-liquid separation system and the like and is used for installing all the systems in a box body.
Disclosure of Invention
The present invention is directed to a liquid sampler for solving the problems of the prior art.
The purpose of the invention is realized by the following technical scheme:
a liquid sampler comprises a sampling pipeline, a cooling system and a liquid collecting system;
the cooling system comprises a first liquid pipeline and a closed air pipe sleeved outside the first liquid pipeline, and a channel for air circulation is formed between the outer wall of the first liquid pipeline and the inner wall of the air pipe; one end of the first liquid pipeline is connected with the sampling pipeline, the other end of the first liquid pipeline is connected with a second liquid pipeline, one end of the air pipe is connected with a negative pressure device, and the other end of the air pipe is provided with a first connecting port;
the liquid collecting system comprises a closed box body and a liquid collecting bottle with an opening, wherein the liquid collecting bottle is positioned in the closed box body; the opening of the liquid collecting bottle is provided with a sealing plug, the other end of the second liquid pipeline penetrates through one side wall of the closed box body, the sealing plug extends into the liquid collecting bottle, and the sealing plug is further provided with a vent.
Preferably, the negative pressure device is a venturi air amplifier.
Preferably, a sampling needle and a hard liner tube with a diameter larger than that of the sampling needle are further arranged in the closed box body, the hard liner tube penetrates through the upper end face and the lower end face of the sealing plug, the sampling needle is located in the hard liner tube, one end of the sampling needle extends into the liquid collecting bottle, the other end of the sampling needle is connected with the second liquid pipeline, and a gap is formed between the sampling needle and the hard liner tube to form the vent.
Preferably, a corrosion-resistant hose is arranged between the sampling needle and the second liquid pipeline.
Preferably, the sampling needle is a syringe needle or other hard material hollow thin tube.
Preferably, the system also comprises a self-priming pump and a lofting pipeline;
still be equipped with in the closed box and insert the end pump inlet pipe, the one end of inserting the end pump inlet pipe stretches into the inboard bottom of liquid receiving flask, the other end is followed the sealing plug stretches out, is connected with the third liquid pipeline, the other end of third liquid pipeline passes a lateral wall of closed box, with the one end of self priming pump is connected, the other end of self priming pump with lofting tube coupling.
Preferably, a closed connecting pipe is arranged between the first connecting port and the second connecting port, the opening size of the first connecting port is smaller than that of the second connecting port, and the closed connecting pipe is in a horn shape with the diameter gradually increased from the first connecting port to the second connecting port.
Preferably, the sampling pipeline and the second liquid pipeline are both provided with control valves.
Preferably, the closed box body is a visible box body, and the liquid collecting bottle is a visible collecting bottle.
The liquid sampler provided by the invention can extract peculiar smell and volatile gas generated in the sampling process by arranging the air pipe and the negative pressure device outside the first liquid pipeline, and is matched with the closed box body for use, so that the diffusion of the volatile gas and the peculiar smell is reduced.
Drawings
FIG. 1 is a schematic structural diagram of a liquid sampler provided by the present invention;
fig. 2 is an enlarged schematic view of a portion a of fig. 1.
Detailed description of the preferred embodiments
The liquid sampler provided by the invention, as shown in fig. 1, comprises a sampling pipeline 1, a cooling system and a liquid collecting system;
the cooling system comprises a first liquid pipeline 21 and a closed air pipe 22 sleeved outside the first liquid pipeline 21, and a channel for air flow circulation is formed between the outer wall of the first liquid pipeline 21 and the inner wall of the air pipe 22; one end of the first liquid pipeline 21 is connected with the sampling pipeline 1, and the other end is connected with the second liquid pipeline 23; one end of the air pipe 22 is connected with a negative pressure device 24, and the other end is provided with a first connecting port 27;
the liquid collecting system comprises a closed box body 31 and a liquid collecting bottle 32 which is positioned in the closed box body 31 and is provided with an opening, and the upper end of the closed box body 31 is provided with a second connecting port 37 which is hermetically connected with the first connecting port; a sealing plug 33 is arranged on the opening of the liquid collecting bottle 32, the other end of the second liquid pipeline 23 penetrates through one side wall of the closed box body 31 and the sealing plug 33 to extend into the liquid collecting bottle 32, and a vent is further arranged on the sealing plug 33.
When in use, the sampling pipeline 1 is connected with equipment such as a high-temperature pipeline where a liquid sample to be sampled is located, so that the liquid sample flows into the sampling pipeline 1, then flows into the liquid collecting bottle 32 through the first liquid pipeline 21 and the second liquid pipeline 23 until the sampling is finished; in the liquid sample flowing process, the temperature is gradually reduced, the volatilization of the sample can be reduced, in the process of flowing into the liquid collecting bottle 32, the volatilized gas is discharged from the vent and gathered in the closed box body 31, then flows into the air pipe 22 from the second connecting port 37 and the first connecting port 27, and is finally absorbed by the negative pressure device 24 connected on the air pipe 22, so that the volatilized gas is prevented from leaking into the environment, the generated peculiar smell is also absorbed, and the diffusion of the peculiar smell is prevented. Moreover, the countercurrent air draft effect generated by the negative pressure device 24 enables the air pipe 22 and the first liquid pipeline 21 to form a group of heat exchangers, and in the flowing process of the liquid sample in the first liquid pipeline 21, the countercurrent air draft process generated by the negative pressure device 24 accelerates the heat exchange cooling effect, so that the volatilization of the sampling material can be greatly reduced. When the sample needs to be detected, the sealing plug 33 is taken down from the liquid collecting bottle, and then the sample can be taken out from the liquid collecting bottle for detection, and when the sample needs to be stored, the liquid collecting bottle 32 is sealed by adopting a conventional means, such as another rubber plug or a glass plug.
The liquid sampler provided by the invention can connect the sampling pipeline 1 with the existing sampling pipeline 6 by means of the existing peripheral sampling pipeline 6 and the existing instrument air pipeline 7, and connect the aerodynamic force required by the negative pressure device 24 with the existing instrument air pipeline 7, so that a special electric circuit is not required to be laid, and the explosion-proof risk is reduced.
From the analysis, the liquid sampler provided by the invention can greatly reduce the volatilization of the liquid sample and the diffusion of volatilized gas and peculiar smell in the sampling process, and has the advantages of simple structure, less leakage point, small volume and convenience in use and carrying.
In order to improve the heat dissipation effect, the first liquid pipeline 21 may be provided with heat dissipation fins to increase the heat exchange area. Further, the first liquid line 21 may be a corrosion-resistant metal pipe.
Preferably, the negative pressure device 24 may adopt a venturi air amplifier, and extract the volatilized gas and peculiar smell by using the principle that the venturi and the high-pressure air are amplified to generate negative pressure, so as to prevent the volatilized gas and the peculiar smell from diffusing. The other end of the negative pressure device 24 can be connected with the peripheral existing air duct system or tail gas treatment system for treating the extracted gas and peculiar smell.
Preferably, as shown in fig. 1-2, a sampling needle 34 and a hard liner tube 36 having a diameter larger than that of the sampling needle 34 are further disposed in the closed box 31, the hard liner tube 36 penetrates through the upper and lower end surfaces of the sealing plug 33, the sampling needle 34 is located in the hard liner tube 36, one end of the hard liner tube extends into the liquid collection bottle 32, and the other end of the hard liner tube is connected with the second liquid pipeline 23, and since the diameter of the hard liner tube 36 is larger than that of the sampling needle 34, a gap is formed between the sampling needle 34 and the hard liner tube 36, so as to form. By providing the sampling needle 34 and the rigid liner 36, the connection of the second fluid line 23 to the fluid collection bottle 32 is facilitated without the need for a separate vent opening. And the needle design of the sampling needle 34, the diameter of the liquid outlet of the needle head is reduced, the flow is reduced, the liquid sampling is convenient, and the odor loss is reduced. The length of the sampling needle 34 extending into the liquid collecting bottle 32 is not too long, and the sampling needle just exposes the sealing plug 33, so that the sample can be prevented from being polluted, and the volatile gas can be conveniently discharged.
Preferably, a corrosion resistant hose 35 is provided between the sampling needle 34 and the second liquid line 23. By providing a corrosion resistant hose 35, it is convenient to bend or fold during sampling to prevent the flow and leakage of the liquid material. The corrosion-resistant hose 35 can be made of flexible materials with an inner diameter of about 0.5-3mm, which can resist corrosion and swelling of organic solvents, such as perfluoroether and polyphenylene sulfide.
Preferably, the sampling needle 34 may be a syringe needle or other hard hollow tube.
Preferably, the liquid sampler provided by the invention further comprises a self-priming pump 43 and a lofting pipeline 5;
still be equipped with in the closed box 31 and insert bottom pump inlet pipe 41, the inboard bottom that liquid receiving flask 32 was stretched into to the one end of inserting bottom pump inlet pipe 41, and the other end stretches out from sealing plug 33, is connected with third liquid pipeline 42, and a lateral wall that closed box 31 was passed to the other end of third liquid pipeline 42 is connected with the one end of self priming pump 43, and the other end and the lofting pipeline 5 of self priming pump 43 are connected. Through setting up bottom-inserting pump inlet pipe 41, self priming pump 43 and lofting pipeline 5, can be with the automatic suction of the liquid sample in the liquid receiving flask 32, then detect from the terminal liquid sample that collects of lofting pipeline 5, need not open and seal box 31 and remove liquid receiving flask 32, more facilitate the use. Self-priming pump 43 is preferably a pneumatic self-priming pump, the source of aerodynamic force of which may also be taken from the peripheral instrument air line 7.
Preferably, a sealing connection pipe 25 is arranged between the second connection port 37 and the first connection port 27, the opening size of the first connection port 27 is smaller than that of the second connection port 37, the sealing connection pipe 25 is in a horn shape with the diameter gradually increasing from the first connection port 27 to the second connection port 37, and the flow of the volatile gas and the odor from the closed box 31 to the air duct 22 is facilitated.
Preferably, the sampling pipeline 1, the second liquid pipeline 23 and the third liquid pipeline 42 are all provided with control valves, so that the sampling process is convenient to control.
Preferably, the closed box 31 is a visible box, and the liquid collecting bottle 32 is a visible collecting bottle, so that the sampling process can be observed at any time.
As shown in fig. 1, the sampling pipeline 1 and the lofting pipeline 5 can be installed on the sampling pipeline 6 of the existing chemical production, and the control valves are arranged on the sampling pipeline 6 between the sampling pipeline 1 and the lofting pipeline 5, so that the switching of sampling by the original sampling pipeline 6 and sampling by the sampling pipeline 6-the liquid sampler-sampling pipeline 6 provided by the invention without the liquid sampler provided by the invention can be realized by opening and closing each control valve, and the use is more convenient.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention. It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (9)
1. A liquid sampler is characterized by comprising a sampling pipeline, a cooling system and a liquid collecting system;
the cooling system comprises a first liquid pipeline and a closed air pipe sleeved outside the first liquid pipeline, and a channel for air circulation is formed between the outer wall of the first liquid pipeline and the inner wall of the air pipe; one end of the first liquid pipeline is connected with the sampling pipeline, the other end of the first liquid pipeline is connected with a second liquid pipeline, one end of the air pipe is connected with a negative pressure device, and the other end of the air pipe is provided with a first connecting port;
the liquid collecting system comprises a closed box body and a liquid collecting bottle with an opening, wherein the liquid collecting bottle is positioned in the closed box body; the opening of the liquid collecting bottle is provided with a sealing plug, the other end of the second liquid pipeline penetrates through one side wall of the closed box body, the sealing plug extends into the liquid collecting bottle, and the sealing plug is further provided with a vent.
2. Liquid sampler according to claim 1,
the negative pressure device is a Venturi air amplifier.
3. Liquid sampler according to claim 1,
still be equipped with in the closed box sample needle and diameter are greater than the stereoplasm bushing pipe of sample needle, the stereoplasm bushing pipe runs through the upper and lower terminal surface of sealing plug, the sample needle is located in the stereoplasm bushing pipe, one end stretches into in the liquid collecting bottle, the other end with second liquid pipeline is connected, the sample needle with have the space between the stereoplasm bushing pipe, form drain.
4. Liquid sampler according to claim 3,
and a corrosion-resistant hose is arranged between the sampling needle and the second liquid pipeline.
5. Liquid sampler according to claim 3,
the sampling needle is a syringe needle or other hollow thin tubes made of hard materials.
6. Liquid sampler according to claim 1,
the automatic lofting device also comprises a self-priming pump and a lofting pipeline;
still be equipped with in the closed box and insert the end pump inlet pipe, the one end of inserting the end pump inlet pipe stretches into the inboard bottom of liquid receiving flask, the other end is followed the sealing plug stretches out, is connected with the third liquid pipeline, the other end of third liquid pipeline passes a lateral wall of closed box, with the one end of self priming pump is connected, the other end of self priming pump with lofting tube coupling.
7. Liquid sampler according to claim 1,
the first connector with be equipped with airtight connecting pipe between the second connector, the opening size of first connector is less than the second connector, airtight connecting pipe be by first connector extremely the loudspeaker form that the second connector diameter is gradually big.
8. Liquid sampler according to claim 1,
and the sampling pipeline and the second liquid pipeline are both provided with control valves.
9. Liquid sampler according to claim 1,
the closed box body is a visible box body, and the liquid collecting bottle is a visible collecting bottle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010136780.8A CN111289296B (en) | 2020-03-02 | 2020-03-02 | Liquid sampler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010136780.8A CN111289296B (en) | 2020-03-02 | 2020-03-02 | Liquid sampler |
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| Publication Number | Publication Date |
|---|---|
| CN111289296A true CN111289296A (en) | 2020-06-16 |
| CN111289296B CN111289296B (en) | 2023-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010136780.8A Active CN111289296B (en) | 2020-03-02 | 2020-03-02 | Liquid sampler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114414301A (en) * | 2021-11-26 | 2022-04-29 | 国家能源集团新能源技术研究院有限公司 | Tower liquid sampling device and packed tower |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114414301A (en) * | 2021-11-26 | 2022-04-29 | 国家能源集团新能源技术研究院有限公司 | Tower liquid sampling device and packed tower |
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| Publication number | Publication date |
|---|---|
| CN111289296B (en) | 2023-08-25 |
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