CN109765078B - Sampling probe crossing tank body - Google Patents
Sampling probe crossing tank body Download PDFInfo
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- CN109765078B CN109765078B CN201910211455.0A CN201910211455A CN109765078B CN 109765078 B CN109765078 B CN 109765078B CN 201910211455 A CN201910211455 A CN 201910211455A CN 109765078 B CN109765078 B CN 109765078B
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- probe
- outer probe
- shaped hollow
- tube
- double
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- 239000000523 sample Substances 0.000 title claims abstract description 153
- 238000005070 sampling Methods 0.000 title claims abstract description 19
- 238000007789 sealing Methods 0.000 claims abstract description 6
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 238000002955 isolation Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 7
- 238000001914 filtration Methods 0.000 abstract description 6
- 238000005260 corrosion Methods 0.000 abstract description 2
- 230000007797 corrosion Effects 0.000 abstract description 2
- 239000011148 porous material Substances 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000002808 molecular sieve Substances 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a sampling probe crossing a tank body, which is characterized by comprising an outer probe and an inner probe, wherein the outer probe comprises an outer probe tube, an inner probe is arranged in the outer probe tube, an outer probe supporting ring is arranged at one end of the outer probe tube, and an outer probe sealing cap is arranged at the outer side of the outer probe supporting ring; the other end of the outer probe tube is connected with one end of an inner probe flange clamping plate through a connecting flange, and the other end of the inner probe flange clamping plate is sequentially connected with a double-shutoff discharge valve, a double-shutoff needle valve group and a pairing flange. The invention has the advantages of convenient installation, short sample lag, variable sample proportion, sample filtering function, suitability for corrosion working conditions, low absorptivity and strong working condition adaptability, and can be flexibly adjusted according to the requirements of process samples and the installation structure.
Description
Technical Field
The invention relates to a multi-sample sampling probe crossing a tank body or a tower body, belonging to the technical field of petrochemical online analyzers.
Background
The large amount of petrochemical engineering operation process is applied to tower body and tank body, and its cross-sectional area is generally relatively large, so that its flow rate is small, and the medium may be unevenly distributed due to gravity, flow rate, pressure, temperature, tank body structure, tank body filling material and other factors.
Because of the technical difficulty of multi-point sampling of crossing the tank body or the tower body, at present, the common sampling points are all arranged at the outlet of the tower body or the tank body, and due to the large lag time caused by the arrangement of the positions of the sampling points, the advanced control cannot be effectively applied, and the feasibility, the efficiency and the precision of the advanced control implementation are further affected.
Disclosure of Invention
The invention aims to solve the problems that: in the existing cross-tank or tower sampling, the position of an energized sampling point in the process flow is advanced to the tower and the tank, so that the possibility of advanced control is realized, the robustness of control is improved, and objective economic benefits are brought.
In order to solve the technical problems, the technical scheme of the invention is as follows: the utility model provides a cross tank sampling probe, which is characterized in that the probe comprises an outer probe and an inner probe, the outer probe comprises an outer probe tube, an inner probe is arranged in the outer probe tube, an outer probe supporting ring is arranged at the end part of one end of the outer probe tube, and an outer probe sealing cap is arranged at the outer side of the outer probe supporting ring; the other end of the outer probe tube is connected with one end of an inner probe flange clamping plate through a connecting flange, and the other end of the inner probe flange clamping plate is sequentially connected with a double-shutoff discharge valve, a double-shutoff needle valve group and a pairing flange.
Preferably, the inner probe is formed by connecting a plurality of inner probe units in series through a middle connecting piece, and two ends of the inner probe are respectively connected with a termination connecting piece; the middle connecting piece is internally provided with a T-shaped hollow, the left end and the right end of the T-shaped hollow are respectively provided with the end parts of two adjacent inner probe units in a penetrating way, the third end of the T-shaped hollow is communicated with the filter core, the outer side of the filter core is provided with a filter shell, and the filter shell is exposed out of the outer probe tube; an L-shaped hollow is arranged in the termination connecting piece, one end of the L-shaped hollow is provided with the end part of the inner probe unit in a penetrating way, the other end of the L-shaped hollow is communicated with the filter core, the outer side of the filter core is provided with a filter shell, and the filter shell is exposed out of the outer probe tube.
Preferably, a current limiting pore plate is arranged between the filter element and the T-shaped hollow of the middle connecting piece or the L-shaped hollow of the terminating connecting piece.
Preferably, the filter housing is interference fit over the intermediate or terminating connector with a gasket therebetween.
Preferably, the outer wall of the outer probe tube is provided with an outer probe stiffening ridge.
Preferably, the double-shut-off discharge valve is communicated with an air source, an isolation ball valve communicated with the probe of the inner probe is closed, and a needle valve of the double-shut-off needle valve group is opened, so that the air can sweep a sample through the double-shut-off needle valve group to pretreat the sample.
Compared with the prior art, the invention has the advantages of convenient installation, short sample lag, variable sample proportion, sample filtering function, applicable corrosion working condition, low absorptivity and strong working condition adaptability, and can be flexibly adjusted according to the requirements of process samples and the installation structure.
Drawings
FIG. 1 is an overall cross-sectional view of a canister-spanning sampling probe provided by the present invention;
FIG. 2 is a cross-sectional view of an outer probe tube;
FIG. 3 is a cross-sectional view of an inner probe tip;
FIG. 4 is a cross-sectional view of the intermediate connector;
FIG. 5 is a cross-sectional view of the terminating connector;
FIG. 6 is a schematic illustration of the installation of an intermediate connector with a filter;
FIG. 7 is a schematic illustration of the installation of the termination connector with the filter;
FIG. 8 is a schematic diagram of a connection of a double shut-off discharge valve to a double shut-off needle valve set.
Detailed Description
In order to make the invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Examples
1-7, the invention provides a sampling probe crossing a tank body, which comprises an outer probe and an inner probe, wherein the outer probe comprises an outer probe tube 3, an inner probe 8 is arranged in the outer probe tube 3, an outer probe supporting ring 2 is arranged at one end of the outer probe tube 3, and an outer probe sealing cap 1 is arranged outside the outer probe supporting ring 2; the other end of the outer probe tube 3 is connected with one end of an inner probe flange clamping plate 11 through a connecting flange 12, and the other end of the inner probe flange clamping plate 11 is sequentially connected with a double-shut-off discharge valve 13, a double-shut-off needle valve group 14 and a pairing flange 15.
The inner probe 8 is formed by connecting a plurality of inner probe units in series through a middle connecting piece 9, and two ends of the inner probe 8 are respectively connected with a termination connecting piece 10; the middle connecting piece 9 is internally provided with a T-shaped hollow, the left end and the right end of the T-shaped hollow are respectively provided with the end parts of two adjacent inner probe units in a penetrating way, the third end of the T-shaped hollow is communicated with the filter core 6, the outer side of the filter core 6 is provided with a filter shell 5, and the filter shell 5 is exposed out of the outer probe tube 3; an L-shaped hollow is arranged in the termination connecting piece 10, one end of the L-shaped hollow is provided with an end part of the inner probe unit in a penetrating way, the other end of the L-shaped hollow is communicated with the filter core 6, the outer side of the filter core 6 is provided with a filter shell 5, and the filter shell 5 is exposed out of the outer probe tube 3. A current limiting pore plate 7 is arranged between the filter element 6 and the T-shaped hollow of the middle connecting piece 9 or the L-shaped hollow of the end connecting piece 10. The filter housing 5 is interference fit with the intermediate connector 9 or the terminating connector 10 with a gasket therebetween.
The outer wall of the outer probe tube 3 is provided with an outer probe reinforcing ridge 4.
Design of the outer probe: the outer probe is used for ensuring that the mechanical performance of the probe is mainly borne by the dead weight, the wearing weight, the gravity of the molecular sieve filler and the fluid impact force of the probe, and can take the thermal expansion and the cold contraction caused by the temperature and the pressure change in the process operation process into consideration. Manufacturing an outer probe: the outer probe tube 3 is provided with a plurality of mounting holes for mounting the filter. The outer probe tube 3 is welded with the outer probe reinforcing ridge 4 by fillet welding, one end is welded with the connecting flange 12 by socket welding, and the other end is welded with the outer probe sealing cap 1 and is provided with the outer probe supporting ring 2. And (3) mounting an outer probe: the outer probe is erected on two prefabricated flanges of the molecular sieve drying tower, and the connecting flange 12 is connected with the prefabricated flanges of the tank body through bolts and sealed by gaskets; the other end is not fixed, but is only erected on the flange neck of the other prefabricated flange, the outer probe supporting ring 2 is installed by the flange blind plate of the prefabricated flange of the end in a broken mode, and limiting is achieved through the outer probe reinforcing ridge 4.
Design of an inner probe: the design of the inner probe needs to ensure the low dead volume of the probe, ensure the representativeness of the sample, and the pipe wall of the inner probe is chemically polished and coated with silicon, thereby further meeting the low hysteresis time requirement of the technological process. The lower volume of the inner probe allows the blowback of the probe to be free from a large amount of blowback gas, so that the blowback function of the probe is simpler. Manufacturing an inner probe: the end connection piece 10, the inner probe 8, the middle connection piece 9 and the inner probe flange clamping plate 11 are welded into a whole through socket welding. And (3) mounting an inner probe: the inner probe is inserted into the outer probe through the connecting flange 12 and corresponds to the prefabricated opening on the outer probe.
Design of filtration and flow restrictor: and filtering to remove tiny particles in the sampled sample, so as to avoid blocking the flow limiting pore plate and further blocking downstream components. Through the design and the selection of the pore plates of each sampling point on the sampling probe, the flow-limiting decompression can be realized at the probe, the sample volume of the inner probe is reduced, thereby reducing the probe lag time, and simultaneously, the sampling proportion can be realized through the selection of the pore sizes of the pore plates of each point. Filtration and restrictor fabrication: the intermediate connector 9 and the terminating connector 10 are both connectors of the inner probe and mount for the filter and restrictor. The filter element 6 and the restriction orifice 7 are welded together, and the filter housing 5 is screwed to the terminal connection 10 and then deformed by pressing the gasket to achieve sealing. Installation of filtration and flow restrictors: after the inner probe is inserted into the outer probe, each intermediate connector 9 and each terminating connector 10 are aligned with the opening of the outer probe. The filter element 6, the restrictor orifice 7, and the intermediate connector 9 and the terminating connector 10 are then inserted into the filter housing 5 and screwed into each other by means of a screw connection. So far, the inner probe and the outer probe are integrally formed.
Double shut-off bleed and purge valve block design: because the sample medium is toxic, nitrogen substitution of the component is required before maintenance of the downstream component, ensuring that the sample concentration is below a safe threshold and therefore requiring a purge function. The function implementation process is as follows: the isolation ball valve of the double shut-off drain valve 13 is closed, the needle valve of the double shut-off needle valve set 14 is opened, and nitrogen is purged downstream through the double shut-off needle valve set 14 for sample pretreatment (as shown in fig. 8, where a is the sample inlet, B is the bleed, C is the nitrogen inlet, D is the pretreated sample outlet).
Claims (4)
1. The transverse tank sampling probe is characterized by comprising an outer probe and an inner probe, wherein the outer probe comprises an outer probe tube (3), an inner probe (8) is arranged in the outer probe tube (3), an outer probe supporting ring (2) is arranged at one end of the outer probe tube (3), and an outer probe sealing cap (1) is arranged outside the outer probe supporting ring (2); the other end of the outer probe tube (3) is connected with one end of an inner probe flange clamping plate (11) through a connecting flange (12), and the other end of the inner probe flange clamping plate (11) is sequentially connected with a double-shutoff discharge valve (13), a double-shutoff needle valve group (14) and a pairing flange (15); the inner probe (8) is formed by connecting a plurality of inner probe units in series through a middle connecting piece (9), and two ends of the inner probe (8) are respectively connected with a termination connecting piece (10); a T-shaped hollow is arranged in the middle connecting piece (9), the left end and the right end of the T-shaped hollow are respectively provided with the end parts of two adjacent inner probe units in a penetrating way, the third end of the T-shaped hollow is communicated with the filter core (6), the outer side of the filter core (6) is provided with the filter shell (5), and the filter shell (5) is exposed out of the outer probe tube (3); an L-shaped hollow is arranged in the end connection connecting piece (10), one end of the L-shaped hollow is provided with an end part of the inner probe unit in a penetrating way, the other end of the L-shaped hollow is communicated with the filter core (6), a filter shell (5) is arranged outside the filter core (6), and the filter shell (5) is exposed out of the outer probe tube (3); the double-shutoff discharge valve (13) is communicated with an air source, an isolation ball valve communicated with the inner probe (8) is closed, and a needle valve of the double-shutoff needle valve group (14) is opened, so that the air can sweep a sample through the double-shutoff needle valve group (14) to pretreat the sample.
2. The cross tank sampling probe according to claim 1, characterized in that a flow limiting orifice plate (7) is arranged between the filter core (6) and the T-shaped hollow of the intermediate connector (9) or the L-shaped hollow of the terminating connector (10).
3. A cross-tank sampling probe according to claim 1, characterised in that the filter housing (5) is interference fit with either the intermediate connector (9) or the terminating connector (10) with a gasket therebetween.
4. A cross tank sampling probe according to claim 1, characterized in that the outer wall of the outer probe tube (3) is provided with an outer probe stiffening ridge (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910211455.0A CN109765078B (en) | 2019-03-20 | 2019-03-20 | Sampling probe crossing tank body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910211455.0A CN109765078B (en) | 2019-03-20 | 2019-03-20 | Sampling probe crossing tank body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109765078A CN109765078A (en) | 2019-05-17 |
| CN109765078B true CN109765078B (en) | 2024-03-22 |
Family
ID=66459245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910211455.0A Active CN109765078B (en) | 2019-03-20 | 2019-03-20 | Sampling probe crossing tank body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109765078B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5134879A (en) * | 1990-08-31 | 1992-08-04 | Union Oil Company Of California | Test method and apparatus |
| US5178022A (en) * | 1991-08-27 | 1993-01-12 | Tomlin Robert L | Inertial filtration external dilution probe |
| CN2739609Y (en) * | 2004-11-05 | 2005-11-09 | 白惠峰 | Sampling probe for heating smoke |
| CN103775068A (en) * | 2013-12-27 | 2014-05-07 | 中国船舶重工集团西安第七0五研究所海源测控技术有限公司 | Small probe system |
| CN103940641A (en) * | 2014-05-13 | 2014-07-23 | 北京国电龙源环保工程有限公司 | Matrix multipoint sampling system of denitration device |
| CN205941111U (en) * | 2016-08-30 | 2017-02-08 | 徐州东兴电力技术有限公司 | A multiple spot equidistance flue gas sample thief for vertical gas pass |
| CN107421790A (en) * | 2017-09-12 | 2017-12-01 | 南京友智科技有限公司 | A kind of more dot matrix mixing sampling apparatuses of gaseous contaminant and its method for sampling and blowback maintaining method |
| CN210090078U (en) * | 2019-03-20 | 2020-02-18 | 爱文思控制系统工程(上海)有限公司 | Cross tank sampling probe |
-
2019
- 2019-03-20 CN CN201910211455.0A patent/CN109765078B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5134879A (en) * | 1990-08-31 | 1992-08-04 | Union Oil Company Of California | Test method and apparatus |
| US5178022A (en) * | 1991-08-27 | 1993-01-12 | Tomlin Robert L | Inertial filtration external dilution probe |
| CN2739609Y (en) * | 2004-11-05 | 2005-11-09 | 白惠峰 | Sampling probe for heating smoke |
| CN103775068A (en) * | 2013-12-27 | 2014-05-07 | 中国船舶重工集团西安第七0五研究所海源测控技术有限公司 | Small probe system |
| CN103940641A (en) * | 2014-05-13 | 2014-07-23 | 北京国电龙源环保工程有限公司 | Matrix multipoint sampling system of denitration device |
| CN205941111U (en) * | 2016-08-30 | 2017-02-08 | 徐州东兴电力技术有限公司 | A multiple spot equidistance flue gas sample thief for vertical gas pass |
| CN107421790A (en) * | 2017-09-12 | 2017-12-01 | 南京友智科技有限公司 | A kind of more dot matrix mixing sampling apparatuses of gaseous contaminant and its method for sampling and blowback maintaining method |
| CN210090078U (en) * | 2019-03-20 | 2020-02-18 | 爱文思控制系统工程(上海)有限公司 | Cross tank sampling probe |
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| Publication number | Publication date |
|---|---|
| CN109765078A (en) | 2019-05-17 |
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