CN111707499A - Sampling device of high accuracy dangerous chemicals - Google Patents
Sampling device of high accuracy dangerous chemicals Download PDFInfo
- Publication number
- CN111707499A CN111707499A CN202010566890.8A CN202010566890A CN111707499A CN 111707499 A CN111707499 A CN 111707499A CN 202010566890 A CN202010566890 A CN 202010566890A CN 111707499 A CN111707499 A CN 111707499A
- Authority
- CN
- China
- Prior art keywords
- sampling
- valve
- bottle
- pipeline
- nitrogen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
-
- 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
- G01N1/22—Devices for withdrawing samples in the gaseous state
-
- 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
- G01N2001/1031—Sampling from special places
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
A sampling device for high-precision dangerous chemicals belongs to the technical field of chemical equipment. The device comprises a pressure-regulating nitrogen-charging purging valve group, a nitrogen vacuumizing valve group, a fluid feeding valve group, a sampling valve group, an exhaust assembly and an expansion bottle, wherein the assemblies are communicated through a pipeline to form a closed pipeline system, and the assemblies are skid-mounted into a square box body; the sampling device is connected with a movable sampling bottle through a quick-assembling interface. According to the invention, the nitrogen purging loop after sampling is arranged and the upper and lower quick-mounting ports of the sampling bottle are butted, so that the cleanness of the system after sampling is ensured; through the sampling bottle nitrogen filling and vacuumizing measures before sampling and the set sampling fluid loop, the sampling bottle can ensure that the sampled product is not polluted by the original air in the sampling bottle, accurately reflects the authenticity of the sampled product, reduces the risks of leakage, burn, corrosion, poisoning and explosion in the sampling process, and achieves intrinsic safety.
Description
Technical Field
The invention belongs to the technical field of chemical equipment, and particularly relates to a high-precision sampling device for dangerous chemicals.
Background
Sampling is generally required for the production of hazardous chemicals, and in some non-process processes, fluid is sampled only intermittently in batches, and automatic sampling analysis is not suitable and very expensive, and in many cases, manual sampling is also required.
Because dangerous chemicals have dangerous characteristics such as inflammable and explosive, toxicity, corrosivity, etc., sampling thereof has been a dangerous operation historically, and moreover, the general manual sampling also faces the problems of inaccurate sampling and easy air pollution of the sample in the sampling bottle.
Generally, the conventional method of manual sampling in hazardous chemical production is: the operator holds the sampling bottle and directly opens the valve to discharge from the equipment or the pipeline, and the sampling method has two defects that can not be solved: one is that the operator is burnt by the chemical very easily and is seriously poisoned even, still can produce explosion danger to inflammable and explosive fluid sample misoperation, and its is second the sampling bottle needs to be opened, and outside air must get into, and this has changed the constitution of sampling medium, causes final sample to detect and appears the error, brings the influence to production.
Therefore, in some cases, the problem of accuracy and safety of manual sampling of hazardous chemicals becomes an urgent problem in the safe production of hazardous chemicals.
Disclosure of Invention
In view of the above problems in the prior art, the present invention provides an intrinsically safe hazardous chemical sampler with high safety, reliability, low cost and high sampling precision.
The invention provides the following technical scheme: a high-precision sampling device for dangerous chemicals is characterized by comprising a pressure-regulating nitrogen-charging purging valve group, a nitrogen vacuum-pumping valve group, a fluid feeding valve group, a sampling valve group, an exhaust assembly and an expansion bottle, wherein the assemblies are communicated through a pipeline to form a closed pipeline system, and are skid-mounted into a square box body;
the sampling device is connected with a movable sampling bottle through a quick-assembling interface.
The sampling device for the high-precision dangerous chemicals is characterized in that a first sampling needle valve and a second sampling needle valve are respectively arranged at the inlet end and the outlet end of a sampling bottle, and the needle valves are connected with quick-assembling interfaces.
The utility model provides a sampling device of high accuracy hazardous chemicals, its characterized in that the pressure regulating fills nitrogen and sweeps the valves including sweeping needle valve, self-operated air-vent valve, sweeping check valve and manometer, the valves subassembly passes through pipeline series connection, and the one end of valves is passed through the pipeline and is linked together with outside nitrogen gas pipeline, and the other end passes through hose and sampling bottle export fast-assembling interface connection.
A high accuracy dangerous chemical's sampling device, its characterized in that exhaust subassembly includes venturi, evacuation pipeline and sweeps the exhaust pipe, sweep the exhaust pipe and link to each other with sampling bottle import fast-assembling mouth through sweeping discharge valve, evacuation pipeline one end is passed through sampling bottle evacuation needle type valve and is swept the exhaust pipe and link to each other, the other end links to each other with the venturi extraction opening, the venturi gas vent with sweep the exhaust pipe export and link to each other.
A sampling device of high accuracy dangerous chemical, its characterized in that the nitrogen gas evacuation valve unit includes that the one end of nitrogen gas evacuation needle valve and evacuation check valve, valves passes through the pipeline and links to each other with outside nitrogen gas pipeline, the other end is sprayed the inlet through pipeline and venturi and is connected.
A sampling device of high accuracy hazardous chemicals, its characterized in that fluid feeding valves includes sample medium feed valve and feed line filter, and the one end and the sample line entry of valves link to each other, and the other end links to each other with the sample valves.
A sampling device of high accuracy hazardous chemicals, its characterized in that the sample valves includes first sample three-way valves and second sample three-way valves, the one end of first sample three-way valves passes through the pipeline and links to each other with the charge-in pipeline filter, and both ends link to each other with the entrance point of sampling bottle and inflation bottle respectively through the pipeline in addition, the one end of second sample three-way valves is passed through the pipeline and is linked to each other with the sample pipeline export, and both ends link to each other with sampling bottle export and inflation bottle exhaust end respectively in addition, and the pipe of being connected with the sampling bottle exit end passes through the hose and links to each other with sampling bottle exit end fast-assembling interface, be equipped with the manometer on second sample three-way valves and the sampling bottle exit linkage.
By adopting the technology, compared with the prior art, the invention has the following beneficial effects:
1) according to the invention, the nitrogen purging loop after sampling is arranged and the upper and lower quick-mounting ports of the sampling bottle are butted, so that the cleanness of the system after sampling is ensured;
2) the sampling bottle nitrogen filling and vacuum pumping measures before sampling and the arranged sampling fluid loop can ensure that the sampled product is not polluted by the original air in the sampling bottle, accurately reflect the authenticity of the sampled product, reduce the risks of leakage, burning, corrosion, poisoning and explosion in the sampling process and realize intrinsic safety.
Drawings
Fig. 1 is a schematic structural diagram of a high-precision dangerous chemical sampling device according to the present invention.
In the figure: v1, purge needle valve; v2, a self-operated pressure regulating valve; v3, sample media feed valve; v4, a first sampling three-way valve set; v5, a second sampling three-way valve set; v6, first sampling needle valve; v7, second sampling needle valve; v8, a nitrogen vacuum needle valve; v9, a vacuum needle valve of the sampling bottle; v10, purge vent valve; v11, purge check valve; v12, vacuum check valve; VN, Venturi; H. a hose; SR, a feed line filter; PG, pressure gauge; QD, fast-assembling interface; EC. An expansion bottle; SC, sampling bottle.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
On the contrary, the invention is intended to cover alternatives, modifications, equivalents and alternatives which may be included within the spirit and scope of the invention as defined by the appended claims. Furthermore, in the following detailed description of the present invention, certain specific details are set forth in order to provide a better understanding of the present invention. It will be apparent to one skilled in the art that the present invention may be practiced without these specific details.
Referring to fig. 1, a sampling device for high-precision dangerous chemicals comprises a pressure-regulating nitrogen-charging purging valve set, a nitrogen vacuum-pumping valve set, a fluid feeding valve set, a sampling valve set, an exhaust assembly and an expansion bottle EC, wherein the components are communicated through a pipeline to form a closed pipeline system, and the components are skid-mounted into a square box body;
the device completes sampling operation of dangerous chemicals by connecting a movable sampling bottle SC with a certain volume into a quick-mounting interface QD of the sampler in a quick-mounting mode, and performing the steps of nitrogen over-filling and purging, vacuumizing, sampling, expanding, pipeline purging, bottle dismounting and the like;
the inlet end and the outlet end of the sampling bottle SC are respectively provided with a first sampling needle valve V6 and a second sampling needle valve V7, and the needle valve ends are connected with a quick-assembling interface.
The pressure-regulating nitrogen-charging purging valve group comprises a purging needle valve V1, a self-operated pressure-regulating valve V2, a purging check valve V11 and a pressure gauge PG, wherein valve group components are connected in series through a pipeline, one end of the valve group is communicated with an external nitrogen pipeline through a pipeline, and the other end of the valve group is connected with a sampling bottle outlet quick-installation interface QD through a hose H; the valve block regulates the pressure entering the purge system and ensures that the medium does not flow back to the nitrogen line.
Exhaust subassembly includes venturi VN, evacuation pipeline and sweeps the exhaust pipe, sweep the exhaust pipe and link to each other with sampling bottle import fast-assembling mouth QD through sweeping exhaust valve V10, evacuation pipeline one end is passed through sampling bottle evacuation needle valve V9 and is swept the exhaust pipe and link to each other, and the other end links to each other with venturi VN extraction opening, and venturi VN gas vent links to each other with the exhaust pipe export that sweeps.
The nitrogen vacuumizing valve group comprises a nitrogen vacuumizing needle valve V8 and a vacuumizing check valve V12, one end of the valve group is connected with an external nitrogen pipeline through a pipeline, and the other end of the valve group is connected with a Venturi VN injection inlet through a pipeline; the nitrogen is communicated with the vacuumizing pipeline of the quick-assembly inlet of the sampling bottle through the venturi tube, so that the purpose of vacuumizing the sampling bottle is achieved.
The fluid feeding valve group comprises a sample medium feeding valve V3 and a feeding pipeline filter SR, one end of the valve group is connected with the inlet of a sampling pipeline, and the other end of the valve group is connected with the sampling valve group;
the sampling valve group comprises a first sampling three-way valve group V4 and a second sampling three-way valve group V5, one end of a first sampling three-way valve group V4 is connected with a feeding pipeline filter SR through a pipeline, the other two ends of the first sampling three-way valve group are respectively connected with inlet ends of a sampling bottle SC and an expansion bottle EC through pipelines, one end of a second sampling three-way valve group V5 is connected with an outlet of the sampling pipeline through a pipeline, the other two ends of the second sampling three-way valve group are respectively connected with an outlet of the sampling bottle SC and an exhaust end of the expansion bottle EC, a pipe connected with the outlet end of the sampling bottle SC is connected with a quick-assembling interface QD of the outlet end of the sampling bottle SC through a hose H, and a;
by changing the channel flow direction of the three-way valve group, the sample can be conveyed to the sampling bottle SC and flows back to the process pipeline, so that the sampling accuracy is ensured; the communication between the sampling bottle and the expansion bottle EC can be realized, so that the sampling bottle is not full to cause too large pressure, and redundant samples can enter the expansion bottle; during sampling, a first sampling needle valve V6 and a second sampling needle valve V7 are opened, a first sampling three-way valve group V4 is connected to a feeding pipe and is communicated with the side of an SC (sample bottle), a second sampling three-way valve group V5 is connected to a SC discharging pipe of the sample bottle and is communicated with the outlet side of a process pipeline, after the SC is full of the sample bottle, a first sampling three-way valve group V4 is connected with the side of an EC (expandable flask), a second sampling three-way valve group V5 is connected to the SC discharging pipe of the sample bottle and is communicated with the side of the EC of the expandable flask, after expansion is finished, the first sampling needle valve V6 and the second sampling needle valve V7 of the sample bottle SC are closed, a purging needle valve V1 and a purging exhaust valve V10 are opened, and residual media in the pipeline are.
The internal technical principle and the operation process of the sampling device are as follows: the sealed sampling bottle SC is connected with a quick-assembling port of a sampling device, a first sampling needle valve V6 and a second sampling needle valve V7 of upper and lower valves of the sampling bottle SC are opened, and a nitrogen-filled purging valve group is opened: purging a needle valve V1 and a self-operated pressure regulating valve V2, and filling nitrogen into the needle valve and the self-operated pressure regulating valve; then closing the nitrogen charging valve, and opening the nitrogen vacuum pumping valve group: a nitrogen vacuumizing needle valve V8 is used for vacuumizing a sampling bottle SC and an expansion pipeline, then a nitrogen filling purging valve group and a nitrogen vacuumizing valve group are closed, a first sampling three-way valve group V4, a second sampling three-way valve group V5 and a sample medium feeding valve V3 in a feeding valve group in the sampling valve group are opened, a first sampling three-way valve V4 is punched to be communicated with the sampling bottle SC, a second sampling three-way valve V5 is punched to be communicated with an outlet of a sampling process pipe, a sample is filled into the sampling bottle SC by using positive fluid pressure or negative fluid pressure, and then the sampling bottle SC is communicated with the expansion bottle EC through the three-way valve group until the pressure balance is realized, and the sampling bottle inlet and outlet valves, namely the first sampling needle valve V6 and the second sampling needle valve V7, are closed; opening a purge exhaust valve V10 to purge the material between the expansion bottle EC and the communication pipe to an emptying pipe; and finally, disassembling the sampling bottle SC, and communicating the upper and lower quick-assembling ports QD by using the flexibility of the hose H.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. A sampling device for high-precision dangerous chemicals is characterized by comprising a pressure-regulating nitrogen-charging purging valve group, a nitrogen vacuum-pumping valve group, a fluid feeding valve group, a sampling valve group, an exhaust assembly and an expansion bottle (EC), wherein the assemblies are communicated through a pipeline to form a closed pipeline system, and the assemblies are skid-mounted into a square box body;
the sampling device is connected with a movable sampling bottle (SC) through a quick-assembly interface (QD).
2. A high precision sampling device for dangerous chemicals according to claim 1, characterized in that the inlet and outlet ends of the sampling bottle (SC) are respectively provided with a first sampling needle valve (V6) and a second sampling needle valve (V7), and the needle valves are terminated with quick-mounting interfaces.
3. The sampling device of a high precision dangerous chemical according to claim 1, characterized in that the pressure-regulating nitrogen-filling purging valve set comprises a purging needle valve (V1), a self-operated pressure-regulating valve (V2), a purging check valve (V11) and a Pressure Gauge (PG), the valve set components are connected in series through a pipeline, one end of the valve set is communicated with an external nitrogen pipeline through a pipeline, and the other end is connected with a sampling bottle outlet quick-mounting interface (QD) through a hose (H).
4. A high accuracy sampling device of dangerous chemicals according to claim 1, characterized in that the exhaust subassembly includes Venturi (VN), evacuation line and sweeps the exhaust pipe, sweep the exhaust pipe and link to each other with sampling bottle import fast-assembling mouth (QD) through sweeping exhaust valve (V10), evacuation line one end links to each other with sweeping the exhaust pipe through sampling bottle evacuation needle type valve (V9), the other end links to each other with Venturi (VN) extraction opening, Venturi (VN) gas vent links to each other with sweeping the exhaust pipe export.
5. A high precision sampling device for dangerous chemicals according to claim 1 or 4, characterized in that said nitrogen vacuum-pumping valve set comprises nitrogen vacuum-pumping needle valve (V8) and vacuum-pumping check valve (V12), one end of valve set is connected with external nitrogen pipeline through pipe, the other end is connected with Venturi (VN) injection inlet through pipe.
6. A high precision sampling device for dangerous chemicals according to claim 1, characterized in that said fluid feeding valve set comprises a sample medium feeding valve (V3) and a feeding pipe filter (SR), one end of the valve set is connected to the inlet of the sampling pipe, and the other end is connected to the sampling valve set.
7. A high precision sampling device for dangerous chemicals according to claim 1 or 6, characterized in that said sampling valve set comprises a first sampling three-way valve set (V4) and a second sampling three-way valve set (V5), one end of the first sampling three-way valve group (V4) is connected with the feed pipeline filter (SR) through a pipeline, the other two ends are respectively connected with the inlet ends of the sampling bottle (SC) and the expansion bottle (EC) through pipelines, one end of the second sampling three-way valve group (V5) is connected with the outlet of the sampling pipeline through a pipeline, the other two ends are respectively connected with the outlet of the sampling bottle (SC) and the exhaust end of the expansion bottle (EC), the pipe connected with the outlet end of the sampling bottle (SC) is connected with the quick-mounting interface (QD) at the outlet end of the sampling bottle (SC) through a hose (H), and a Pressure Gauge (PG) is arranged on the connecting section of the second sampling three-way valve group (V5) and the outlet of the sampling bottle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010566890.8A CN111707499A (en) | 2020-06-19 | 2020-06-19 | Sampling device of high accuracy dangerous chemicals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010566890.8A CN111707499A (en) | 2020-06-19 | 2020-06-19 | Sampling device of high accuracy dangerous chemicals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111707499A true CN111707499A (en) | 2020-09-25 |
Family
ID=72541579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010566890.8A Pending CN111707499A (en) | 2020-06-19 | 2020-06-19 | Sampling device of high accuracy dangerous chemicals |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111707499A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113484096A (en) * | 2021-08-10 | 2021-10-08 | 苏州特瑞勃自动化科技有限公司 | Full-automatic closed sampling system of reation kettle |
-
2020
- 2020-06-19 CN CN202010566890.8A patent/CN111707499A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113484096A (en) * | 2021-08-10 | 2021-10-08 | 苏州特瑞勃自动化科技有限公司 | Full-automatic closed sampling system of reation kettle |
| CN113484096B (en) * | 2021-08-10 | 2024-03-29 | 斯图瑞科技(苏州)有限公司 | Full-automatic closed sampling system for reaction kettle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110068429B (en) | Method for testing leakage performance of aerospace composite material component in low-temperature environment | |
| CN210893823U (en) | Gas closed sampler | |
| CN111707499A (en) | Sampling device of high accuracy dangerous chemicals | |
| CN110849552A (en) | Membrane electrode assembly air tightness detection method and air tightness detection device | |
| CN114486543B (en) | System and method for testing influence of trace gas impurities on high-pressure hydrogen embrittlement of material | |
| CN213580221U (en) | High-precision dangerous chemical sampler | |
| CN210319411U (en) | Fuel cell hydrogen supply system test platform | |
| CN109163859B (en) | Automatic device and method for rapidly detecting product tightness | |
| CN213180925U (en) | Airtight analysis sampling safety guarantee system | |
| CN209841472U (en) | Vacuum equipment gassing sampling device | |
| CN112229687A (en) | Zero-leakage automatic gas sampling device and sampling method | |
| CN211232413U (en) | Be used for large-traffic gaseous supply equipment | |
| CN112461616A (en) | Nuclear power plant containment atmospheric radioactive gas pressurizing and sampling device and method | |
| CN209495803U (en) | A kind of high vacuum system pressure control point calibrating installation | |
| CN111855324A (en) | Natural gas sample collection method for detecting mercury content of natural gas | |
| CN208921510U (en) | Gas sampling analysis system | |
| CN219640041U (en) | Special gas supply high-pressure leak detection compensation equipment | |
| CN111929116A (en) | Sampling method for detecting gas content of insulating oil | |
| CN213456300U (en) | Zero-leakage automatic gas sampling device | |
| CN219723541U (en) | Corrosion inhibitor film coating pipeline system | |
| CN216012647U (en) | Leakage detection system for heat pump condenser | |
| CN215587377U (en) | Device for recovering materials in steel cylinder | |
| CN216925970U (en) | Product sealing performance detection system | |
| CN215876913U (en) | Nitrogen dilution experimental device | |
| CN221198847U (en) | Detection device for internal and external leakage of gas cylinder valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |