CN109406205A - A kind of boiler device of working medium constant-speed sampling device - Google Patents
A kind of boiler device of working medium constant-speed sampling device Download PDFInfo
- Publication number
- CN109406205A CN109406205A CN201811213836.4A CN201811213836A CN109406205A CN 109406205 A CN109406205 A CN 109406205A CN 201811213836 A CN201811213836 A CN 201811213836A CN 109406205 A CN109406205 A CN 109406205A
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- Prior art keywords
- tube
- working medium
- probe tube
- supervisor
- sampling
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- 238000005070 sampling Methods 0.000 title claims abstract description 74
- 239000000523 sample Substances 0.000 claims abstract description 84
- 230000008878 coupling Effects 0.000 claims abstract description 38
- 238000010168 coupling process Methods 0.000 claims abstract description 38
- 238000005859 coupling reaction Methods 0.000 claims abstract description 38
- 238000003466 welding Methods 0.000 claims abstract description 18
- 230000003189 isokinetic effect Effects 0.000 claims abstract description 16
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 11
- 239000010959 steel Substances 0.000 claims abstract description 11
- 239000012530 fluid Substances 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 16
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 6
- 239000010962 carbon steel Substances 0.000 claims description 6
- 238000005242 forging Methods 0.000 claims description 6
- 238000003780 insertion Methods 0.000 claims description 6
- 230000037431 insertion Effects 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 3
- 230000007704 transition Effects 0.000 description 9
- 238000013461 design Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 241000283690 Bos taurus Species 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 101100080331 Serpula lacrymans var. lacrymans (strain S7.9) nps3 gene Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000014171 carbonated beverage Nutrition 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000004326 stimulated echo acquisition mode for imaging Methods 0.000 description 1
- 210000005239 tubule Anatomy 0.000 description 1
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
- G01N2001/1031—Sampling from special places
Abstract
The present invention provides a kind of boiler device of working medium constant-speed sampling device, coupling tube bottom end is connect with supervisor's tube wall, butt welding in the middle part of coupling tube top and probe tube, and probe tube lower end passes through coupling tube and is inserted into supervisor;It requires to calculate sampling bore according to isokinetic sampling.The Working fluid flow direction that the bottom of probe tube meets in supervisor is tiltedly provided with the slope surface for entering probe tube for front guidance working medium.The direction of probe tube slope surface is checked in the upper end of probe tube when being equipped with for assembling, so that probe tube is rotated in place, make the instruction steel plate of the slope surface for sampling bottom of the tube and aperture face working medium flow direction.The present invention passes through setting slope surface, the cross-sectional area that sampler is contacted with working medium is reduced, the phenomenon of rupture occurred due to vibration etc. at this is reduced, improves the rigidity of sampler, the technical requirements for meeting isokinetic sampling enhance safety and accuracy in sampler operational process.Apparatus structure is simple, manufactures easy to assembly, applicable boiler device of working medium isokinetic sampling.
Description
Technical field
The present invention relates to a kind of boiler device of working medium constant-speed sampling device, the constant speed for drum sewerage, boiler feedwater is taken
Sample belongs to boiler pressure part technical field.
Background technique
In boiler running process, in addition to carrying out stringent monitoring to steam quality, also there is stringent want to boiler water quality
It asks.This requires from the sample segment that main body device of working medium extracts to be representative.After real-time sampling analysis, power plant is according to sample
Quality adjusts carbonated drink medium in time, guarantees the normal operation of boiler and steam turbine.The factor of sampling system key includes: sampling
Point, material selection, system design, sample time, sampling frequency, there are also sample integrity is correctly maintained before sample analysis
Technique.With industrial development, Enterprise Product Standards are increasingly stringenter, owner may require that meet ASME specification with isolating valve etc.
Fast sample nozzle is used for all condensates, water supply and steam sample.
In the file of " setting matters of the Guangdong Electric Power Design Institute about furnace water sampling point ", Electric Power Design Institute is wanted
It asks and increases furnace water sampling head.It is sampled about device of working medium, at home in boiler project, Electric Power Design Institute Yunfu Power Plant project is clearly mentioned
Sampling head requirement is gone out.International pro-ject Cowes watt root, horsepower ten thousand this be distinctly claimed all working medium isokinetic samplings.Cowes watt root, horse
The sampling of Li Wansi project saturated vapor and superheated steam is all in accordance with ASTMD1066-11 isokinetic sampling, Cowes watt root Element furnace water
Sampling is according to ASTMD3370-10 isokinetic sampling.
Boiler constant speed steam sampling is according to ASTM D1066-11 " STANDARD PRACTICE FOR SAMPLING
STEAM " and GB/T 14416-2010 " method of sampling of Boiler Steam ".The equivalent water sampling with ASTM D1066 steam sampling
ASTM standard is ASTM D3370 " STANDARD PRACTICE FOR SAMPLING WATER FROMCLOSED
CONDUITS".ASTM D3370 standard is used to generate the water sampling of closed water guide pipeline in the power plant of steam, to chemistry, object
Reason, microorganism, radiance are analyzed.
GB1576-2008 Industrial Boiler water standard to boiler water-sampling device require be: according to boiler type, parameter,
Water quality surveillance requires to be designed, manufacture, install and arrange, to guarantee that the water sample of acquisition has adequate representation.Lin Zonghu, Xu Tong
" the practical boiler boiler handbook " of mould chief editor is described as to water sampling: being taken out on feed pipe with tubule.This does not embody extraction
The structure type of the constant speed device of working medium sampler of representative sample.
Fig. 1 show existing boiler feedwater sampling structure, and boiler feedwater sampling directly (takes from the pipe fitting on supervisor 4
Sample pipe 1) it draws, the device of working medium drawn in this way will include fluid boundary layer impurity, nor isokinetic sampling, sample composition is not
Comprehensively represent whole working medium.
Summary of the invention
It can satisfy boiler device of working medium isokinetic sampling the technical problem to be solved in the present invention is to provide one kind to require, and work
Boiler device of working medium constant-speed sampling device safe and reliable to operation.
In order to solve the above-mentioned technical problem, the technical solution of the present invention is to provide a kind of boiler device of working medium isokinetic sampling dresses
It sets, it is characterised in that: including coupling tube, coupling tube bottom end is connect with supervisor's tube wall, is docked in the middle part of coupling tube top and probe tube
Weldering, probe tube lower end pass through coupling tube and are inserted into supervisor;The Working fluid flow direction that the bottom of probe tube is met in supervisor is tiltedly provided with
Enter the slope surface of probe tube for front guidance working medium.
Preferably, the direction of probe tube slope surface is checked when the upper end of the probe tube is equipped with for assembling, so as to probe tube
It is rotated in place, makes the instruction steel plate of the slope surface for sampling bottom of the tube and aperture face working medium flow direction.
Preferably, the upper end of the coupling tube is equipped with the flaring that material when for providing welding expands required gap.
Preferably, the internal diameter of the coupling tube root is 1~3mm bigger than the outer diameter of probe tube at this.
Preferably, the coupling tube is connected with supervisor using welding form.
Preferably, the coupling tube and supervisor use integral type forging three-port structure.
Preferably, the lower end of the probe tube is 3/4, and " heavy-weight pipe is NPS3/4 " selection according to ASME B36.10 diameter
Described 3/4 " dimensions of heavy-weight pipe.
Preferably, the sampling bore is required to calculate and be determined according to isokinetic sampling.
Preferably, if supervisor's inner diameter is ID, the depth of probe tube insertion supervisor is L, then L=1/3ID or L≤2 ";
The depth of the probe tube insertion supervisor refers to distance of the most upper edge of slope surface away from supervisor's upper inside walls of sampling bottom of the tube.
Preferably, the coupling tube and supervisor are manufactured using identical material.
Preferably, the probe tube is made of the stainless steel of 18%Cr containing mass percent, 8%Ni;Or work as carbon steel pipe
When meeting sampling water quality requirement, the probe tube (1) is made of carbon steel material.
Compared with prior art, boiler device of working medium constant-speed sampling device provided by the invention has the following beneficial effects:
1, probe tube, coupling tube and supervisor are combined into constant-speed sampling device, by processing forging, effectively meet not cocurrent flow
Aperture in fast situation needs, and achievees the purpose that isokinetic sampling;
2, slope surface is tiltedly opened by the lower end that probe tube is inserted into main tube part, reduces the cross that sampler is contacted with working medium
Sectional area reduces the phenomenon of rupture occurred due to vibration etc. at this;
3, by the material transition of transition tube socket, the influence of different steel weld is reduced or is avoided, welding difficulty is reduced, is mentioned
The high welding quality of sampler.Using stainless steel material, it is conducive to guarantee sample quality.
4, apparatus structure is simple, is applicable in the isokinetic sampling of boiler device of working medium, convenient for manufacture installation, to be effectively reduced into
This, and meet related specification requirement;
5, in operation, sampling result can the accurate device of working medium quality of Real-time Feedback, reduce unit regulation difficulty, be
The safety of boiler operatiopn and economy provide safeguard.
Detailed description of the invention
Fig. 1 is existing boiler feedwater sampling structure schematic diagram;
Fig. 2 is boiler device of working medium constant-speed sampling device schematic diagram;
Fig. 3 is that boiler device of working medium constant-speed sampling device is continuous in Philippine's Kauswagan 4X135MW unit engineering drum
Application schematic diagram in blowdown water sampling.
Specific embodiment
Present invention will be further explained below with reference to specific examples.
Fig. 2 is boiler device of working medium constant-speed sampling device schematic diagram, and the boiler device of working medium constant-speed sampling device includes taking
Sample pipe 1, direction board 2, coupling tube 3, supervisor 4 etc., wherein 3 bottom end of coupling tube be responsible for that 4 tube walls are vertical to be connect, 3 top of coupling tube
With 1 middle part butt welding of probe tube.4 tube wall apertures are responsible for, 1 lower end of probe tube passes through coupling tube 3 and is inserted into supervisor 4.Probe tube 1
Upper end welding instruction steel plate 2.
The upper end of coupling tube 3 is equipped with flaring 7, to provide gap needed for material when welding expands.3 root of coupling tube it is interior
Diameter is e bigger than the outer diameter D of probe tube 1 at this, e=1~3mm.
Coupling tube 3 and supervisor 4 are manufactured using identical material.Coupling tube 3 can be connected with supervisor 4 using welding form,
Coupling tube 3 and supervisor 4 can also be using integral type forging three-port structure (being suitable for small-bore pipeline to sample).
" XXHVY pipe (heavy-weight pipe) 5, according to 3/4 " heavy wall of ASME B36.10 diameter NPS that the lower end of probe tube 1 is 3/4
Pipe, concrete specification are determined according to actual condition.The internal diameter 8d of calculating probe tube 1 is required according to standard criterion isokinetic sampling.
The slope surface 6 that it is α with the radial angle of supervisor 4 that the Working fluid flow direction A that the bottom of probe tube 1 meets in supervisor 4, which is tiltedly opened, is used
Carry out positive guidance working medium and enters sampler.
The depth of the insertion of probe tube 1 supervisor 4, the i.e. most upper edge in the top of slope surface 6 of probe tube 1 away from 4 upper inside walls of supervisor away from
It is calculated and is chosen by designer for 1/3 supervisor internal diameter ID or≤2 " from L.
Probe tube 1 generally selects stainless steel (corrosion resistance Cr 18%, Ni 8%) manufacture.It is taken when carbon steel pipe can satisfy
When sample water quality requirement, probe tube 1 can use carbon steel material.
The effect for indicating steel plate 2 is to check that the direction of 1 slope surface of probe tube makes so that probe tube 1 is rotated in place in assembly
The slope surface and aperture face working medium of 1 lower end of probe tube flow to.Indicate that the material of steel plate 2 can be identical as welding body.Probe tube 1 is inserted into
Coupling tube 3 flows to instruction 2 face working medium of steel plate, then steel plate 2 is welded on probe tube 1 with after supervisor 4.
Furnace water constant-speed sampling device is used for Philippine's Kauswagan 4X135MW unit engineering drum continuous blowdown below
Water sampling is specifically described.
In conjunction with Fig. 3, in this engineering, since 4 calibers of supervisor are small, it is responsible for 4 diameters at sampling and specially increases, forms reducing and connects
Adapter tube 12.Supervisor 4 designs integrated forging three-port structure with coupling tube 3, that is, uses integral type transition tube socket 11.When for pot
Furnace is to water sampling, all that coupling tube welding supervisor's form can be directly used because water supply caliber is sufficiently large.
The upper end welding instruction steel plate 2 of probe tube 1.
The lower end of probe tube 1 meets Working fluid flow direction and tiltedly opens slope surface, enters sampler for front guidance working medium.Slope surface
It is 45 ° with radial angle α is responsible for.
The lower end of probe tube is 3/4, and " XXHVY manages (heavy-weight pipe), and selecting diameter according to ASME B36.10 is 27 heavy wall of φ
Pipe.The position of isokinetic sampling's point is chosen and relevant criterion and specification are shown in sampling 8 aperture of bore calculating.1 insertion depth of probe tube
To meet span bore ID distance L=1/3ID or≤2 " outside working medium face, designer, which calculates, to be chosen.The middle part of probe tube 1 and one
The lower part of the 11 top butt welding of body formula transition tube socket, probe tube 1 is inserted into integral type transition tube socket 11.Integral type transition tube socket 11
Upper end is flaring, to provide gap needed for material when welding expands, must meet pressure containing part intensity requirement.Integral type transition tube socket
The inner diameter size of 11 roots is 2mm bigger than the outer diameter of probe tube 1 at this.
Coupling tube 3 and 4 integral type wrought form materials of supervisor meet transition request.Probe tube 1 selects SA182-F316;It takes
Sample pipe 1, coupling tube 3 use forging material, meet the intensity requirement of parameter.
When assembly, probe tube 1 was inserted by integral type transition tube socket 11 (or after coupling tube 3 and main pipeline 4 are welded and fixed)
Pipe 3 is crossed, and is rotated in place referring to instruction steel plate 2, then by probe tube 1 and 3 top butt welding of coupling tube.
In use, by the device of working medium sampling in 1 couple of probe tube supervisor 4, into the sample train being connect with 1 upper end of probe tube
System.
In operation, the sampling result of this sampler can the accurate device of working medium quality of Real-time Feedback, reduce unit
Debugging difficulty provides safeguard for the safety and economy of boiler operatiopn.
The present invention designs boiler device of working medium sampler structure according to ASTM D3370-10, improves the rigid of sampler
Degree, meets the technical requirements of isokinetic sampling, enhances safety and accuracy in sampler operational process, structure letter
It is single, manufacture easy to assembly, applicable boiler device of working medium.
The above, only presently preferred embodiments of the present invention, not to the present invention in any form with substantial limitation,
It should be pointed out that under the premise of not departing from the method for the present invention, can also be made for those skilled in the art
Several improvement and supplement, these are improved and supplement also should be regarded as protection scope of the present invention.All those skilled in the art,
Without departing from the spirit and scope of the present invention, when made using disclosed above technology contents it is a little more
Dynamic, modification and the equivalent variations developed, are equivalent embodiment of the invention;Meanwhile all substantial technologicals pair according to the present invention
The variation, modification and evolution of any equivalent variations made by above-described embodiment, still fall within the range of technical solution of the present invention
It is interior.
Claims (10)
1. a kind of boiler device of working medium constant-speed sampling device, it is characterised in that: including coupling tube (3), coupling tube (3) bottom end and supervisor
(4) tube wall connects, butt welding in the middle part of coupling tube (3) top and probe tube (1), and probe tube (1) lower end passes through coupling tube (3) and inserts
Enter in supervisor (4);The Working fluid flow direction that the bottom of probe tube (1) meets in supervisor (4) be tiltedly provided with for front guidance working medium into
Enter the slope surface of probe tube (1).
2. a kind of boiler device of working medium constant-speed sampling device as described in claim 1, it is characterised in that: the probe tube (1)
Upper end checks that the direction of probe tube (1) slope surface makes probe tube (1) bottom so that probe tube (1) is rotated in place when being equipped with for assembling
The instruction steel plate (2) of slope surface and aperture face the working medium flow direction in portion.
3. a kind of boiler device of working medium constant-speed sampling device as described in claim 1, it is characterised in that: the coupling tube (3)
Upper end is equipped with the flaring (7) that material when for providing welding expands required gap.
4. a kind of boiler device of working medium constant-speed sampling device as described in claim 1, it is characterised in that: coupling tube (3) root
The internal diameter in portion is 1~3mm bigger than the outer diameter of probe tube at this (1).
5. a kind of boiler device of working medium constant-speed sampling device as described in claim 1, it is characterised in that: the coupling tube (3) and
(4) are responsible for connect using welding form.
6. a kind of boiler device of working medium constant-speed sampling device as described in claim 1, it is characterised in that: the coupling tube (3) and
It is responsible for (4) and uses integral type forging three-port structure.
7. a kind of boiler device of working medium constant-speed sampling device as described in claim 1, it is characterised in that: the probe tube (1)
Lower end is 3/4, and " heavy-weight pipe is the " dimensions of the selection 3/4 " heavy-weight pipe of NPS 3/4 according to ASME B36.10 diameter;Institute
The internal diameter for stating probe tube (1) requires to calculate according to isokinetic sampling to be determined.
8. a kind of boiler device of working medium constant-speed sampling device as described in claim 1, it is characterised in that: it is straight to set supervisor (4) inner wall
Diameter is ID, and the depth of probe tube (1) insertion supervisor (4) is L, then L=1/3ID or L≤2 ";Probe tube (1) the insertion supervisor
(4) depth refers to the distance of the most upper edge of slope surface (6) away from supervisor (4) upper inside walls of probe tube (1) bottom.
9. a kind of boiler device of working medium constant-speed sampling device as described in claim 1, it is characterised in that: the coupling tube (3) with
(4) are responsible for manufacture using identical material.
10. a kind of boiler device of working medium constant-speed sampling device as described in claim 1, it is characterised in that: the probe tube is by containing
The stainless steel of mass percent 18%Cr, 8%Ni is made;Or when carbon steel pipe meets sampling water quality requirement, the probe tube
(1) it is made of carbon steel material.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201811213836.4A CN109406205B (en) | 2018-10-18 | 2018-10-18 | Constant-speed sampling device for boiler water working medium |
Applications Claiming Priority (1)
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CN201811213836.4A CN109406205B (en) | 2018-10-18 | 2018-10-18 | Constant-speed sampling device for boiler water working medium |
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CN109406205A true CN109406205A (en) | 2019-03-01 |
CN109406205B CN109406205B (en) | 2024-01-30 |
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Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU815570A1 (en) * | 1978-12-04 | 1981-03-23 | Грозненское Научно-Производственноеобъединение "Промавтоматика" | Device for liquid sampling |
US4391152A (en) * | 1980-12-16 | 1983-07-05 | Bralorne Resources Limited | Sampler |
SU1543286A1 (en) * | 1987-12-17 | 1990-02-15 | Научно-Производственное Объединение По Исследованию И Проектированию Энергетического Оборудования Им.И.И.Ползунова | Sampler for taking samples of liquid from pipe-line |
US5693894A (en) * | 1995-12-13 | 1997-12-02 | The United States Of America As Represented By The Secretary Of The Interior | Fluid controlled isokinetic fluid sampler |
CA2468652A1 (en) * | 2004-05-28 | 2005-11-28 | Devin Sekulich | Fluid sampling device |
RU2272268C2 (en) * | 2004-04-09 | 2006-03-20 | Общество с ограниченной ответственностью "Корпорация ИМС" | Device for holding sample-taking slit-type pipe on pipelines for liquid |
CN200943491Y (en) * | 2006-08-03 | 2007-09-05 | 吴全文 | Intelligent locking type oil well pressure-testing sampler |
RU2352915C1 (en) * | 2007-11-07 | 2009-04-20 | Государственное образовательное учреждение высшего профессионального образования "Санкт-Петербургский государственный горный институт имени Г.В. Плеханова (технический университет)" | Installation for mixture sampling from pipeline |
CN107831048A (en) * | 2017-11-08 | 2018-03-23 | 上海锅炉厂有限公司 | A kind of steam constant-speed sampling device |
CN209432503U (en) * | 2018-10-18 | 2019-09-24 | 上海锅炉厂有限公司 | Boiler device of working medium constant-speed sampling device |
-
2018
- 2018-10-18 CN CN201811213836.4A patent/CN109406205B/en active Active
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU815570A1 (en) * | 1978-12-04 | 1981-03-23 | Грозненское Научно-Производственноеобъединение "Промавтоматика" | Device for liquid sampling |
US4391152A (en) * | 1980-12-16 | 1983-07-05 | Bralorne Resources Limited | Sampler |
SU1543286A1 (en) * | 1987-12-17 | 1990-02-15 | Научно-Производственное Объединение По Исследованию И Проектированию Энергетического Оборудования Им.И.И.Ползунова | Sampler for taking samples of liquid from pipe-line |
US5693894A (en) * | 1995-12-13 | 1997-12-02 | The United States Of America As Represented By The Secretary Of The Interior | Fluid controlled isokinetic fluid sampler |
RU2272268C2 (en) * | 2004-04-09 | 2006-03-20 | Общество с ограниченной ответственностью "Корпорация ИМС" | Device for holding sample-taking slit-type pipe on pipelines for liquid |
CA2468652A1 (en) * | 2004-05-28 | 2005-11-28 | Devin Sekulich | Fluid sampling device |
CN200943491Y (en) * | 2006-08-03 | 2007-09-05 | 吴全文 | Intelligent locking type oil well pressure-testing sampler |
RU2352915C1 (en) * | 2007-11-07 | 2009-04-20 | Государственное образовательное учреждение высшего профессионального образования "Санкт-Петербургский государственный горный институт имени Г.В. Плеханова (технический университет)" | Installation for mixture sampling from pipeline |
CN107831048A (en) * | 2017-11-08 | 2018-03-23 | 上海锅炉厂有限公司 | A kind of steam constant-speed sampling device |
CN209432503U (en) * | 2018-10-18 | 2019-09-24 | 上海锅炉厂有限公司 | Boiler device of working medium constant-speed sampling device |
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