CN1081253A - Fluid chemical test sampling method without emptying and its installation - Google Patents
Fluid chemical test sampling method without emptying and its installation Download PDFInfo
- Publication number
- CN1081253A CN1081253A CN 92106999 CN92106999A CN1081253A CN 1081253 A CN1081253 A CN 1081253A CN 92106999 CN92106999 CN 92106999 CN 92106999 A CN92106999 A CN 92106999A CN 1081253 A CN1081253 A CN 1081253A
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- China
- Prior art keywords
- sampling
- valve
- emptying
- orifice plate
- endoporus
- Prior art date
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- 238000005070 sampling Methods 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000012530 fluid Substances 0.000 title claims abstract description 11
- 238000007705 chemical test Methods 0.000 title abstract 2
- 238000009434 installation Methods 0.000 title description 2
- 239000000126 substance Substances 0.000 claims abstract description 13
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 8
- 238000000227 grinding Methods 0.000 claims description 8
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 239000011148 porous material Substances 0.000 abstract 2
- 238000003556 assay Methods 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 6
- 230000000295 complement effect Effects 0.000 description 4
- 241000252983 Caecum Species 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 210000004534 cecum Anatomy 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The invention relates to a fluid chemical test sampling method without emptying and a facility thereof, which are suitable for occasions requiring test sampling in product quality of oil refineries and chemical plants. It features that a pore plate is installed in the main technological pipeline, a by-pass pipeline is installed between the upstream and downstream of two sides of pore plate, and a special sampling valve is installed on the by-pass pipeline. Therefore, when the sampling is carried out in the assay, the emptying is not needed on the sampling pipeline, thereby leading to safety, saving, no environmental pollution, being beneficial to the health of sampling personnel and simultaneously improving the economic benefit.
Description
The present invention system relates to a kind of the fluid chemical examination method of sampling and facility thereof that need not emptying.It is applicable to that refinery, chemical plant need to chemically examine the occasion of sampling on product quality.
At present, on the chemical examination method of sampling in refinery and chemical plant, generally draw on main process pipeline all that a sampling pipeline finishes.When needs when sampling chemical examination, some times of valve open of one or two serial connection on this sampling pipeline will be installed in, so that after making the residual liquid emptying that " caecum " on this pipeline locate, adopt its fresh sample again.As at the high pressure line up-sampling, also have with its sampling pipeline and on valve draw on the connecting pipeline that increases separately between the high and low pressure pipeline that connects, and on the sampling pipeline in the connecting pipeline of both sides, each dress is with valve.Therefore when the sample that need on the sampling pipeline, adopt in its high pressure line, need earlier with two valve opens on this connecting pipeline, so that in the pipeline of sampling.Can reduce from the pressure medium in the high pressure line.But this above-mentioned method of sampling and facility thereof exist deficiency, mainly be its residual liquid of emptying after, brought following problem: the one, serious is dangerous, when especially its residual liquid of emptying is liquid hydrocarbon or acid, alkali lye.The 2nd, the environment around having polluted.The 3rd, influence the healthy of sample collector.The 4th, because accumulating over a long period of sampling number causes the emptying loss bigger, thereby influences benefit.
The object of the present invention is to provide a kind of the fluid chemical examination method of sampling and facility thereof that need not emptying.
The present invention is done in such a way that it by two kinds of Method Of Accomplishments, and the first is by the by-pass line of drawing on the main process pipeline and be loaded on that a special sampling valve in this bypass finishes.It two is only special sampling valve directly to be contained on the main process pipeline to finish.Owing to need that the main process pipeline of sampling is overhead higher to cause sampling inconvenience, simultaneously for special sampling valve for ease of maintenaince or change, should adopt above-mentioned first kind to finish mode.This mode is in main process pipeline, install the restricting element of an orifice plate-orifice flowmeter additional, or increase adorn one the joint Venturi tube after, again between the upstream and downstream on the main process pipeline of orifice plate both sides, adorn a bypass pipeline and be communicated with, and on by-pass line, adorn a special sampling valve.For ease of the maintenance and the replacing of sampling valve, then on the by-pass line on the both sides of this valve, respectively install a stop valve of often opening additional.Like this, when the MEDIA FLOW in the main process pipeline is crossed orifice plate, because the throttling action of orifice plate, caused the pressure differential between the upstream and downstream of orifice plate, because the inlet of by-pass line is drawn from the orifice plate upstream, the vena contracta place by the MEDIA FLOW of this orifice plate is received in its outlet, so the MEDIA FLOW of orifice plate upstream will have sub-fraction to turn back to the downstream of orifice plate again through this by-pass line, and noresidue liquid exists thereby the medium on by-pass line is remaining fresh liquid.The structure of sampling valve is made up of valve body, spool, sampling mouth, unlatching key and connector.Valve body be hollow and the little right cylinder in big two, middle part, on the cylindrical outer circumferential surface in middle part screw thread is arranged.Endoporus is that the place of taking over, big middle part, two has one section little through hole, and on little aperture female screw is arranged, thereby makes the two ends of this screw form reciprocal two step surfaces.One section grinding conical surface is arranged on the endoporus left port, and the hole of endoporus right-hand member is in order to open the usefulness that key bit is filled in.The large diameter place at endoporus middle part has one to pass straight through on the outer circumference surface of valve body with the perpendicular awl screw of its endoporus.Spool is the column that three steps are arranged, but it is triangular in shape with the preceding paragraph to top bar, and this is to make the interior delthyrium of opening on the head be inserted in rotary spool usefulness in back on it.The above place of middle bench is a joint leading screw, and the screw at this leading screw and the place of taking over, valve body middle part is complementary.The spool bottom is the circle polished rod, but diameter is less than the internal diameter of valve body left part.Spool bottom is disk-shaped and for grinding the conical surface, this grindings conical surface is after spool insertion valve body inner bore, is complementary with the grinding conical surface of valve body inner bore left port.The sampling mouth is a pipe, on the outer circumference surface of one end taper thread is arranged, and the perpendicular awl screw of the endoporus on it and the valve body is complementary, and one section setting one's teeth on edge of being connected with sebific duct is arranged on the other end outer circumference surface.Connector is the flat right cylinder of a hollow, but there is a step at the place of taking back, endoporus middle part, there is the annular seal groove that can adorn pad at the above place of step surface, begin screw is arranged from the sealing groove up to endoporus right-hand member head, this screw then with the outer circumference surface at valve body middle part on screw thread be complementary, the outer peripheral face of connector externally is welded on the by-pass line after stretching into the tube wall of by-pass line again.Like this, structure according to above-mentioned sampling valve, as will sample the time, after interior delthyrium on the unlatching key bit of taking being inserted in the triangle polished rod and rotation of spool upper end, the dish type grinding conical surface of spool bottom is thrown off mutually with the grinding conical surface of valve body inner bore left port, thereby make the fresh sample on the by-pass line enter annulus between the polished rod of the endoporus of valve body left part and spool bottom, and then flow out and adopt by the sampling mouth.After sampling finishes, the interior delthyrium of opening key bit can be inserted in the triangle polished rod on spool top after, do opposite spin, just can close sampling valve.Here be noted that because fluid enters the grinding-in face of sampling valve, all stretch in the middle of the MEDIA FLOW of by-pass line, thereby do not had the residual dead angle of medium in the sampling valve, thereby when causing sampling, necessity that need not emptying.
Advantage of the present invention is when fluid when sampling chemical examination, need not emptying on the sampling pipeline, thus cause both safety, save again, and non-environmental-pollution and help the healthy of sample collector.
The invention will be further described below in conjunction with accompanying drawing.
Accompanying drawing 1 is a scheme of installation of the present invention
Accompanying drawing 2 is the longitudinal sectional view of sampling valve of the present invention
Wherein:
1-sampling valve 2-stop valve
3-by-pass line 4-orifice plate
5-master's process pipeline 6-mouth of sampling
7-sampling valve valve body 8-sampling valve spool
9-opens key 10-connector
The 11-pad
With reference to accompanying drawing 1, orifice plate (4) is housed in main process pipeline (5).By-pass line (3) is equipped with in the upstream and downstream both sides of orifice plate (4).Sampling valve (1) is housed on by-pass line (3).On the by-pass line (3) of the both sides of sampling valve (1), a stop valve (2) is housed respectively.
With reference to accompanying drawing 2, on the tube wall of by-pass line (3), the connector that has been welded (10).Screw thread on the outer circumference surface of sampling valve valve body (7) is twisted in the screw of connector (10).Pad (11) is housed in the annular seal groove of connector (10), and sampling valve spool (8) is twisted the leading screw on spool (8) top in the screw of valve body (7) right part after being loaded in the sampling valve valve body (7).Taper thread on the outer circumference surface of sampling mouth (6), twist in the perpendicular awl screw on the outer circumference surface of valve body (7), open key (9) when sampling,, get final product Open valve from being placed in the triangle polished rod of spool (8) upper end after the endoporus of valve body (7) right-hand member penetrates again.
Claims (4)
1, a kind of the fluid chemical examination method of sampling and facility thereof that need not emptying is characterized in that:
A, it is by the orifice plate that installs additional in the main process pipeline, between the upstream and downstream by-pass line is housed in the main process pipeline of orifice plate both sides, and sampling valve is housed on by-pass line forms,
B, sampling valve are made up of valve body, spool, sampling mouth, unlatching key and connector,
C, valve body be hollow and the little right cylinder in big two, middle part, on the cylindrical outer circumference surface in middle part screw thread is arranged, endoporus is that the place of taking over, big middle part, two has one section little through hole, and latent screw thread is arranged on little aperture, one section grinding conical surface is arranged on the endoporus left port, endoporus middle part has one to pass straight through on the periphery of valve body with the perpendicular awl screw of its internal diameter at the large diameter place
D, spool are the columns that three steps are arranged, but it is triangular in shape with the preceding paragraph to top bar, and above the locating of middle bench is a joint leading screw, and the bottom is the circle polished rod, and the bottom is disk-shaped, and dish face is the grinding conical surface,
E, sampling mouth are pipes, on the outer circumference surface of one end taper thread are arranged, have on the other end outer circumference surface and set one's teeth on edge,
F, connector are the flat right cylinders of hollow, but there is step at the place of taking back, endoporus middle part, and there is annular seal groove at the above place of step surface, and the above right-hand member head until its endoporus of this ring groove has screw thread.
2, the fluid chemical examination method of sampling and facility thereof that need not emptying according to claim 1 is characterized in that not adorning in the main process pipeline by-pass line between the upstream and downstream of orifice plate and orifice plate both sides, only sampling valve directly are welded on main process pipeline.
3, the fluid chemical examination method of sampling and facility thereof that need not emptying according to claim 1 is characterized in that not adorning orifice plate in main process pipeline, replace and establish a joint Venturi tube.
4, the fluid chemical examination method of sampling and facility thereof that need not emptying according to claim 1, a stop valve respectively be equipped with in the sampling valve both sides of its feature on this by-pass line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92106999 CN1081253A (en) | 1992-07-13 | 1992-07-13 | Fluid chemical test sampling method without emptying and its installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92106999 CN1081253A (en) | 1992-07-13 | 1992-07-13 | Fluid chemical test sampling method without emptying and its installation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1081253A true CN1081253A (en) | 1994-01-26 |
Family
ID=4942616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92106999 Pending CN1081253A (en) | 1992-07-13 | 1992-07-13 | Fluid chemical test sampling method without emptying and its installation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1081253A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721578A (en) * | 2012-06-14 | 2012-10-10 | 清华大学 | Online sampling device for electrolyte of flow batteries |
| CN104236959A (en) * | 2014-07-15 | 2014-12-24 | 大庆际镜轩科技开发有限公司 | Multielement sample body cutting-off device |
| CN113670675A (en) * | 2020-05-14 | 2021-11-19 | 中国石油化工股份有限公司 | Gas closed sampler |
| CN114088466A (en) * | 2020-08-24 | 2022-02-25 | 三菱动力株式会社 | Sampling device and sampling method |
-
1992
- 1992-07-13 CN CN 92106999 patent/CN1081253A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721578A (en) * | 2012-06-14 | 2012-10-10 | 清华大学 | Online sampling device for electrolyte of flow batteries |
| CN104236959A (en) * | 2014-07-15 | 2014-12-24 | 大庆际镜轩科技开发有限公司 | Multielement sample body cutting-off device |
| CN113670675A (en) * | 2020-05-14 | 2021-11-19 | 中国石油化工股份有限公司 | Gas closed sampler |
| CN113670675B (en) * | 2020-05-14 | 2024-04-09 | 中国石油化工股份有限公司 | Gas airtight sampler |
| CN114088466A (en) * | 2020-08-24 | 2022-02-25 | 三菱动力株式会社 | Sampling device and sampling method |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |