CN109406205B - Constant-speed sampling device for boiler water working medium - Google Patents
Constant-speed sampling device for boiler water working medium Download PDFInfo
- Publication number
- CN109406205B CN109406205B CN201811213836.4A CN201811213836A CN109406205B CN 109406205 B CN109406205 B CN 109406205B CN 201811213836 A CN201811213836 A CN 201811213836A CN 109406205 B CN109406205 B CN 109406205B
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- sampling
- pipe
- tube
- working medium
- boiler
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- 238000005070 sampling Methods 0.000 title claims abstract description 159
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 230000007704 transition Effects 0.000 claims abstract description 48
- 238000003466 welding Methods 0.000 claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 11
- 239000010959 steel Substances 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims description 15
- 238000005242 forging Methods 0.000 claims description 7
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 6
- 239000010962 carbon steel Substances 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 101100080331 Serpula lacrymans var. lacrymans (strain S7.9) nps3 gene Proteins 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000011148 porous material Substances 0.000 abstract description 2
- 239000002609 medium Substances 0.000 description 28
- 238000013461 design Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000007792 addition Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000003189 isokinetic effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000012736 aqueous medium Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000002906 microbiologic effect Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000004326 stimulated echo acquisition mode for imaging Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- HVIBDEARFMWSND-WNKXUTMESA-N φ 27 Chemical compound C([C@@H](C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CO)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H]([C@@H](C)CC)C(N)=O)NC(=O)[C@H](CCCCN)NC(=O)[C@H](CCCCN)NC(=O)[C@H](C)NC(=O)[C@H](CO)NC(=O)[C@H](CC(C)C)NC(=O)[C@H](CCC(N)=O)NC(=O)CNC(=O)[C@H](CC(C)C)NC(=O)[C@H](CC(C)C)NC(=O)[C@H](CCCNC(N)=N)NC(=O)[C@H](CO)NC(=O)[C@H](CC=1C=CC=CC=1)NC(=O)[C@H](CC(O)=O)NC(=O)[C@H](CO)NC(=O)[C@@H](NC(=O)[C@H](CC=1C=CC=CC=1)NC(=O)[C@@H](NC(=O)CNC(=O)[C@H](CC(O)=O)NC(=O)[C@H](C)NC(=O)[C@@H](N)CC=1NC=NC=1)C(C)C)[C@@H](C)O)C1=CC=C(O)C=C1 HVIBDEARFMWSND-WNKXUTMESA-N 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 invention provides a constant-speed sampling device for water working media of a boiler, wherein the bottom end of a transition pipe is connected with the pipe wall of a main pipe, the top end of the transition pipe is in butt welding with the middle part of a sampling pipe, and the lower end of the sampling pipe passes through the transition pipe and is inserted into the main pipe; and calculating the inner diameter of the sampling tube according to the constant-speed sampling requirement. The bottom of the sampling tube is inclined to the working medium flowing direction in the main tube, and a slope surface for guiding the working medium to enter the sampling tube is arranged on the front surface. The upper end of the sampling tube is provided with an indication steel plate for checking the direction of the slope of the sampling tube during assembly so that the sampling tube rotates in place, and the slope at the bottom of the sampling tube and the open pore are opposite to the flow direction of the working medium. By arranging the slope, the cross-sectional area of the sampling device in contact with the working medium is reduced, the fracture phenomenon of the sampling device caused by vibration and the like is reduced, the rigidity of the sampling device is improved, the technical requirement of constant-speed sampling is met, and the safety and the accuracy of the sampling device in the running process are enhanced. The device has simple structure, convenient manufacture and assembly and is suitable for constant-speed sampling of water working medium of the boiler.
Description
Technical Field
The invention relates to a constant-speed sampling device for boiler water working media, which is used for constant-speed sampling of boiler drum sewage and boiler feed water, and belongs to the technical field of boiler pressure-receiving parts.
Background
In the running process of the boiler, besides the strict monitoring of the steam quality, the water quality of the boiler is also strictly required. This requires that the portion of the sample extracted from the subject aqueous medium be representative. After the real-time sampling analysis, the power plant timely adjusts the steam-water medium according to the sample quality, and ensures the normal operation of the boiler and the steam turbine. Key factors of the sampling system include: sampling points, material selection, system design, sampling time, sampling frequency, and also proper processes to maintain sample integrity prior to sample analysis. As industry evolves, industry standards become more stringent and owners will require isolation valve isovelocity sampling nozzles for all condensate, feedwater and steam samples that meet ASME specifications.
In the document of "how the Guangdong province electric power design institute sets up the sampling points of the furnace water", the electric power design institute requires the addition of the sampling heads of the furnace water. Regarding water working medium sampling, in the domestic boiler project, the electric power design institute cloud and float power plant project clearly provides sampling head requirements. The foreign project of Coos root and horsepower Wanshi clearly requires constant-speed sampling of all working substances. The samples of the coomassie, horsepower Wansh project saturated steam and superheated steam were all taken at constant speed according to ASTM D1066-11, and the coomassie Wansh project furnace water samples were taken at constant speed according to ASTM D3370-10.
Boiler isovelocity steam sampling is in accordance with ASTM D1066-11"STANDARD PRACTICE FOR SAMPLING STEAM 'GB/T14416-2010 method for boiler steam sampling'. The water sampling ASTM standard equivalent to ASTM D1066 steam sampling is ASTM D3370"STANDARD PRACTICE FOR SAMPLING WATER FROMCLOSED CONDUITS". ASTM D3370 standard is used for water sampling of closed water conduits in steam generating power plants for analysis of chemical, physical, microbiological, radiation performance.
The requirements of the GB1576-2008 industrial boiler water quality standard on the boiler water sampling device are as follows: and designing, manufacturing, installing and arranging according to the type, parameters and water quality supervision requirements of the boiler so as to ensure that the collected water sample is sufficiently representative. Lin Zonghu, xu Tongmo, the water supply sampling description of the handbook of utility boiler: and taking out the water supply pipe by using a small pipe. This does not show the structural form of the isokinetic water working substance sampling device for sampling representative samples.
Fig. 1 shows a conventional boiler feedwater sampling structure, in which boiler feedwater sampling is directly led out from a pipe joint (sampling pipe 1) on a main pipe 4, so that the led out hydraulic medium can include fluid boundary layer impurities, and is not constant-speed sampling, and sample components do not comprehensively represent the whole working medium.
Disclosure of Invention
The invention aims to solve the technical problem of providing the constant-speed sampling device for the water working medium of the boiler, which can meet the constant-speed sampling requirement of the water working medium of the boiler and is safe and reliable in working and running.
In order to solve the technical problems, the technical scheme of the invention is to provide a constant-speed sampling device for water working media of a boiler, which is characterized in that: the device comprises a transition pipe, wherein the bottom end of the transition pipe is connected with the pipe wall of a main pipe, the top end of the transition pipe is in butt welding with the middle part of a sampling pipe, and the lower end of the sampling pipe penetrates through the transition pipe and is inserted into the main pipe; the bottom of the sampling tube is inclined to the working medium flowing direction in the main tube, and a slope surface for guiding the working medium to enter the sampling tube is arranged on the front surface.
Preferably, the upper end of the sampling tube is provided with an indication steel plate for checking the direction of the slope of the sampling tube during assembly so that the sampling tube rotates in place, and the slope and the open hole at the bottom of the sampling tube are opposite to the flow direction of the working medium.
Preferably, the upper end of the transition tube is provided with a flare for providing a void for expansion of the material during welding.
Preferably, the inner diameter of the root of the transition pipe is 1-3 mm larger than the outer diameter of the sampling pipe.
Preferably, the transition pipe and the main pipe are connected in a welded form.
Preferably, the transition pipe and the main pipe adopt an integrated forging tee structure.
Preferably, the lower end of the sampling tube is a 3/4 "heavy duty tube, and the 3/4" heavy duty tube is sized according to ASME B36.10 diameter NPS3/4 ".
Preferably, the inner diameter of the sampling tube is calculated and determined according to the constant-speed sampling requirement.
Preferably, the diameter of the inner wall of the main pipe is set as ID, and the insertion depth of the sampling pipe into the main pipe is set as L, wherein L=1/3 ID or L is less than or equal to 2'; the depth of the sampling tube inserted into the main tube refers to the distance between the uppermost edge of the slope surface at the bottom of the sampling tube and the inner wall of the upper side of the main tube.
Preferably, the transition pipe and the main pipe are made of the same material.
Preferably, the sampling tube is made of stainless steel containing 18% of Cr and 8% of Ni in percentage by mass; or when the carbon steel pipe meets the requirement of sampling water quality, the sampling pipe (1) is made of carbon steel materials.
Compared with the prior art, the constant-speed sampling device for the boiler water working medium has the following beneficial effects:
1. the sampling tube, the transition tube and the main tube are combined into a constant-speed sampling device, and the requirements of opening holes under the condition of different flow rates are effectively met by processing the forging piece, so that the purpose of constant-speed sampling is achieved;
2. the slope surface is formed by inserting the sampling tube into the lower end of the main pipe part, so that the cross-sectional area of the sampling device in contact with the working medium is reduced, and the fracture phenomenon of the sampling device due to vibration and the like is reduced;
3. through the material transition of transition tube socket, reduce or avoid the heterogeneous steel welded influence, reduced the welding degree of difficulty, improved sampling device's welding quality. And the stainless steel material is adopted, so that the quality of a sample is guaranteed.
4. The device has simple structure, is suitable for constant-speed sampling of the boiler water working medium, and is convenient to manufacture and install, thereby effectively reducing the cost and meeting the requirements of related specifications;
5. in operation, the sampling result can feed back accurate hydraulic medium quality in real time, so that the debugging difficulty of the unit is reduced, and the safety and the economical efficiency of the operation of the boiler are ensured.
Drawings
FIG. 1 is a schematic diagram of a feed water sampling structure of a conventional boiler;
FIG. 2 is a schematic diagram of a constant-speed sampling device for water working medium of a boiler;
FIG. 3 is a schematic diagram of a constant speed sampling device for boiler water working medium applied to continuous sewage sampling of a Philippine Kauswagan 4X135MW unit engineering drum.
Detailed Description
The invention will be further illustrated with reference to specific examples.
Fig. 2 is a schematic diagram of a constant-speed sampling device for the water working medium of the boiler, which comprises a sampling tube 1, a sign board 2, a transition tube 3, a main tube 4 and the like, wherein the bottom end of the transition tube 3 is vertically connected with the wall of the main tube 4, and the top end of the transition tube 3 is butt-welded with the middle part of the sampling tube 1. The pipe wall of the main pipe 4 is provided with holes, and the lower end of the sampling pipe 1 passes through the transition pipe 3 and is inserted into the main pipe 4. The upper end of the sampling tube 1 is welded with an indication steel plate 2.
The upper end of the transition tube 3 is provided with a flare 7 to provide clearance for expansion of the material during welding. The inner diameter of the root of the transition tube 3 is e, e=1 to 3mm larger than the outer diameter D of the sampling tube 1 at that point.
The transition pipe 3 and the main pipe 4 are made of the same material. The transition pipe 3 and the main pipe 4 can be connected in a welding mode, and the transition pipe 3 and the main pipe 4 can also adopt an integrated forging three-way structure (suitable for sampling small-caliber pipelines).
The lower end of the sampling tube 1 is a 3/4 'XXHVY tube (heavy-duty tube) 5, and the specific specification is determined according to the actual working condition according to an ASME B36.10 diameter NPS 3/4' thick-wall tube. The inner diameter 8d of the sampling tube 1 is calculated according to the standard specification isokinetic sampling requirements.
The bottom of the sampling tube 1 faces the slope 6 with the radial included angle alpha between the main tube 4 and the working medium flowing direction A in the main tube 4 and is used for guiding the working medium to enter the sampling device.
The depth of the sampling tube 1 inserted into the main tube 4, namely the distance L from the uppermost edge of the slope surface 6 of the sampling tube 1 to the inner wall of the upper side of the main tube 4 is 1/3 of the inner diameter ID of the main tube or less than or equal to 2', and the distance is calculated and selected by a designer.
The sampling tube 1 is generally made of stainless steel (corrosion resistance Cr 18% and Ni 8%). When the carbon steel pipe can meet the requirement of sampling water quality, the sampling pipe 1 can be made of carbon steel.
The function of the indication steel plate 2 is to check the direction of the slope of the sampling tube 1 during assembly so that the sampling tube 1 rotates in place, and the slope and the open pore at the lower end of the sampling tube 1 are opposite to the flow direction of working medium. The material of the indicator steel plate 2 may be the same as the welded body. After the sampling tube 1 is inserted into the transition tube 3 and the main tube 4, the indication steel plate 2 is opposite to the working medium flow direction, and then the steel plate 2 is welded on the sampling tube 1.
The furnace water constant-speed sampling device is used for sampling sewage continuously discharged from a Philippine Kauswagan 4X135MW unit engineering boiler barrel, and specific description is given below.
In this process, referring to fig. 3, the main pipe 4 is small in diameter, and the main pipe 4 is intentionally enlarged in diameter at the sampling site, thereby forming a reducing connecting pipe 12. The main pipe 4 and the transition pipe 3 are designed into an integrated forging three-way structure, namely an integrated transition pipe seat 11 is adopted. When the device is used for sampling boiler feed water, the feed water pipe diameter is large enough, and all the feed water pipe diameters can be directly in a form of a transition pipe welding main pipe.
The upper end of the sampling tube 1 is welded with an indication steel plate 2.
The lower end of the sampling tube 1 is inclined to the working medium flowing direction so as to guide the working medium to enter the sampling device. The radial included angle alpha between the slope surface and the main pipe is 45 degrees.
The lower end of the sampling tube was a 3/4' XXHVY tube (heavy pipe), and a thick-wall tube with a diameter of phi 27 was selected according to ASME B36.10. And selecting the position of the constant-speed sampling point, and calculating the opening of the inner diameter 8 of the sampling tube to see relevant standards and specifications. The insertion depth of the sampling tube 1 is the distance L=1/3 ID or less than or equal to 2' from the outer diameter of the working medium facing surface to the inner diameter ID of the tube, and the designer calculates and selects. The middle part of the sampling tube 1 is butt welded with the top end of the integrated transition tube seat 11, and the lower part of the sampling tube 1 is inserted into the integrated transition tube seat 11. The upper end of the integrated transition tube seat 11 is provided with a flaring to provide a gap required by material expansion during welding, and the strength requirement of the pressure receiving piece is required to be met. The inner diameter of the root of the integrated transition tube seat 11 is 2mm larger than the outer diameter of the sampling tube 1.
The integrated forging form material of the transition pipe 3 and the main pipe 4 meets the transition requirement. SA182-F316 is selected as the sampling tube 1; the sampling tube 1 and the transition tube 3 are made of forging materials, so that the strength requirement of parameters is met.
During assembly, the integrated transition tube seat 11 (or after the transition tube 3 and the main pipeline 4 are welded and fixed), the sampling tube 1 is inserted into the transition tube 3, the sampling tube 1 is rotated in place by referring to the indication steel plate 2, and then the sampling tube 1 and the top end of the transition tube 3 are butt welded.
When in use, the sampling tube 1 is used for sampling the hydraulic medium in the main tube 4, and the hydraulic medium enters a sampling system connected with the upper end of the sampling tube 1.
In operation, the sampling result of the sampling device can feed back accurate hydraulic quality in real time, the unit debugging difficulty is reduced, and the safety and the economical efficiency of boiler operation are ensured.
According to the invention, the structure of the boiler water working medium sampling device is designed according to ASTM D3370-10, so that the rigidity of the sampling device is improved, the technical requirement of constant-speed sampling is met, the safety and accuracy of the sampling device in the running process are enhanced, the structure is simple, the manufacturing and the assembly are convenient, and the device is suitable for the boiler water working medium.
While the invention has been described with respect to preferred embodiments thereof, it will be understood by those skilled in the art that various modifications and additions may be made without departing from the scope of the invention. Equivalent embodiments of the present invention will be apparent to those skilled in the art having the benefit of the teachings disclosed herein, when considered in the light of the foregoing disclosure, and without departing from the spirit and scope of the invention; meanwhile, any equivalent changes, modifications and evolution of the above embodiments according to the essential technology of the present invention still fall within the scope of the technical solution of the present invention.
Claims (8)
1. The utility model provides a boiler water working medium constant speed sampling device which characterized in that: the device comprises a transition pipe (3), wherein the bottom end of the transition pipe (3) is connected with the pipe wall of a main pipe (4), the top end of the transition pipe (3) is in butt welding with the middle part of a sampling pipe (1), and the lower end of the sampling pipe (1) passes through the transition pipe (3) and is inserted into the main pipe (4); a slope surface for guiding the working medium to enter the sampling tube (1) from the front is obliquely arranged in the working medium flowing direction in the bottom main facing tube (4) of the sampling tube (1); the lower end of the sampling tube (1) is a 3/4 ' heavy tube, and the size specification of the 3/4 ' heavy tube is selected according to ASME B36.10 with the diameter of NPS3/4 '; the inner diameter of the sampling tube (1) is calculated and determined according to the constant-speed sampling requirement; if the diameter of the inner wall of the main pipe (4) is ID and the depth of the sampling pipe (1) inserted into the main pipe (4) is L, L=1/3 ID or L is less than or equal to 2'; the depth of the sampling tube (1) inserted into the main tube (4) is the distance between the uppermost edge of the slope (6) at the bottom of the sampling tube (1) and the inner wall of the upper side of the main tube (4).
2. The constant velocity sampling device for water working medium of boiler as set forth in claim 1, wherein: the upper end of the sampling tube (1) is provided with an indication steel plate (2) for checking the direction of the slope of the sampling tube (1) during assembly so that the sampling tube (1) rotates in place, and the slope and the open hole at the bottom of the sampling tube (1) are opposite to the working medium flow direction.
3. The constant velocity sampling device for water working medium of boiler as set forth in claim 1, wherein: the upper end of the transition pipe (3) is provided with a flaring (7) for providing a gap required by material expansion during welding.
4. The constant velocity sampling device for water working medium of boiler as set forth in claim 1, wherein: the inner diameter of the root of the transition pipe (3) is 1-3 mm larger than the outer diameter of the sampling pipe (1) at the root.
5. The constant velocity sampling device for water working medium of boiler as set forth in claim 1, wherein: the transition pipe (3) and the main pipe (4) are connected in a welding mode.
6. The constant velocity sampling device for water working medium of boiler as set forth in claim 1, wherein: the transition pipe (3) and the main pipe (4) adopt an integrated forging three-way structure.
7. The constant velocity sampling device for water working medium of boiler as set forth in claim 1, wherein: the transition pipe (3) and the main pipe (4) are made of the same material.
8. The constant velocity sampling device for water working medium of boiler as set forth in claim 1, wherein: the sampling tube is made of stainless steel containing 18% of Cr and 8% of Ni in percentage by mass; or when the carbon steel pipe meets the requirement of sampling water quality, the sampling pipe (1) is made of carbon steel materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811213836.4A CN109406205B (en) | 2018-10-18 | 2018-10-18 | Constant-speed sampling device for boiler water working medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811213836.4A CN109406205B (en) | 2018-10-18 | 2018-10-18 | Constant-speed sampling device for boiler water working medium |
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| Publication Number | Publication Date |
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| CN109406205A CN109406205A (en) | 2019-03-01 |
| CN109406205B true CN109406205B (en) | 2024-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811213836.4A Active CN109406205B (en) | 2018-10-18 | 2018-10-18 | Constant-speed sampling device for boiler water working medium |
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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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| Publication number | Publication date |
|---|---|
| CN109406205A (en) | 2019-03-01 |
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