CN105973687B - Quadruple safety protection high-temperature high-pressure digestion system - Google Patents
Quadruple safety protection high-temperature high-pressure digestion system Download PDFInfo
- Publication number
- CN105973687B CN105973687B CN201610412775.9A CN201610412775A CN105973687B CN 105973687 B CN105973687 B CN 105973687B CN 201610412775 A CN201610412775 A CN 201610412775A CN 105973687 B CN105973687 B CN 105973687B
- Authority
- CN
- China
- Prior art keywords
- temperature
- colorimetric pool
- pressure
- cuvette
- pipeline
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000029087 digestion Effects 0.000 title claims abstract description 32
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 33
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 33
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 33
- 230000006835 compression Effects 0.000 claims abstract description 22
- 238000007906 compression Methods 0.000 claims abstract description 22
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 4
- 239000010935 stainless steel Substances 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims description 12
- 230000007797 corrosion Effects 0.000 claims description 9
- 238000005260 corrosion Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 229920001973 fluoroelastomer Polymers 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 6
- 238000009434 installation Methods 0.000 abstract description 3
- 230000008878 coupling Effects 0.000 description 8
- 238000010168 coupling process Methods 0.000 description 8
- 238000005859 coupling reaction Methods 0.000 description 8
- 239000002253 acid Substances 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 5
- 239000003513 alkali Substances 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000004737 colorimetric analysis Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000005483 Hooke's law Effects 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000001479 atomic absorption spectroscopy Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000002798 spectrophotometry method Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000002834 transmittance Methods 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
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a quadruple safety protection high-temperature high-pressure digestion system, and relates to the technical field of high-temperature high-pressure digestion. The lower electromagnetic valve and the upper electromagnetic valve are respectively connected with the colorimetric pool through a lower polytetrafluoroethylene pipeline and an upper polytetrafluoroethylene pipeline, two pipe ends of the lower polytetrafluoroethylene pipeline are respectively fixed at the lower ends of the lower electromagnetic valve and the colorimetric pool through pipe joints, the two pipe ends of the upper polytetrafluoroethylene pipeline are respectively fixed at the upper end of the colorimetric pool and the upper electromagnetic valve through pipe joints, the pipe joints are respectively connected with the lower polytetrafluoroethylene pipeline and the upper polytetrafluoroethylene pipeline, hoops are respectively installed on pipelines, the colorimetric pool is fixed on a colorimetric pool installation seat through a colorimetric pool lower installation block, the upper end of the colorimetric pool is provided with a colorimetric pool compression block, and the colorimetric pool compression block is matched with a stainless steel compression spring and a compression screw, and a temperature collector is installed on the colorimetric pool. The invention realizes high-temperature high-pressure digestion test, ensures that the cuvette cannot explode due to high temperature, and has high safety, stability and reliability.
Description
Technical Field
The invention relates to the technical field of high-temperature and high-pressure digestion, in particular to a quadruple safety protection high-temperature and high-pressure digestion system.
Background
The high-temperature high-pressure digestion is a means capable of decomposing insoluble substances, can be used for sample pretreatment in analysis such as atomic absorption spectroscopy, environmental detection plasma emission and the like, can also be used for small-dose synthesis reaction, and can also achieve the aim of rapidly digesting the insoluble substances by utilizing strong acid or strong alkali in a tank body and a high-temperature high-pressure closed environment; colorimetry is a method for testing the content of substances by adopting a spectrophotometry method and is commonly used in the detection of an instrument for on-line monitoring.
Because the reagent that digests in the test process often is concentrated acid or concentrated alkali, take COD as the example in the digestion process, then the mixed solution in the color comparison pond is 50% concentrated sulfuric acid's mixed solution, and the digestion temperature of COD is more than 165 ℃, and the pressure in the digestion pond can reach 4.3 atmospheres, if the safety protection does not put in place, then once temperature control inefficacy, can explode, and because the reagent in the digestion is high-temperature high-pressure concentrated sulfuric acid, can often cause the irrecoverable loss of instrument, if the safety facilities is not put in place, can cause personal safety threat to people.
In order to solve the problems, a novel quadruple safety protection high-temperature high-pressure digestion system is also necessary.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide a quadruple safety protection high-temperature high-pressure digestion system which is simple in structure, reasonable in design, capable of realizing high-temperature high-pressure digestion test, high in safety, stable and reliable, and easy to popularize and use, and the colorimetric pool is ensured not to explode due to high temperature.
In order to achieve the above object, the present invention is realized by the following technical scheme: the utility model provides a quadruple safety protection high temperature high pressure digestion system, including the clamp, the coupling, high temperature high pressure corrosion-resistant lower solenoid valve, down gather the tetrafluoro pipeline, the lower installation piece of cuvette, cuvette mount pad, the cuvette, the temperature collector, cuvette compact heap, hold-down spring, hold-down screw, go up the last solenoid valve of polytetrafluoroethylene pipeline and corrosion-resistant ordinary pressure, down solenoid valve, go up the solenoid valve and be connected with the cuvette through down the polytetrafluoroethylene pipeline respectively, go up the polytetrafluoroethylene pipeline, two pipe ends of polytetrafluoroethylene pipeline down are fixed down on solenoid valve respectively through the coupling on the lower extreme of cuvette, go up the pipe ends of polytetrafluoroethylene pipeline and are fixed on the upper end of cuvette, go up the solenoid valve respectively through the coupling, all install the clamp on coupling and the pipeline that is connected with polytetrafluoroethylene pipeline down, the cuvette is fixed on cuvette mount pad under the cuvette, the upper end of cuvette is provided with cuvette compact heap, cuvette compact heap and stainless steel spring and hold-down screw cooperate, install the temperature collector on the cuvette.
Preferably, the upper port and the lower port of the colorimetric pool are of flat sealing port structures so as to avoid air leakage, water leakage and acid leakage, and an upper O-shaped ring and a lower O-shaped ring are respectively arranged on the upper port and the lower port, and both the upper O-shaped ring and the lower O-shaped ring adopt fluororubber rings, so that long-term effective operation under high-temperature and high-pressure environments is ensured.
Preferably, the temperature collector is a Pt100 temperature collector, the temperature collector is connected with a PLC collecting module, the PLC is heated through PID temperature control, and once abnormality occurs, the system automatically alarms.
Preferably, the colorimetric pool is a quartz glass colorimetric pool, a plurality of spherical protruding semicircular rings are welded on the colorimetric pool, the semicircular rings are also made of quartz glass, and heating wires are wound on the semicircular rings, so that the heating wires can be better attached to the high-temperature high-pressure digestion colorimetric device.
Preferably, the lower mounting block of the cuvette and the compacting block of the cuvette are made of polytetrafluoroethylene so as to ensure the safety and applicability of the system.
The invention has the beneficial effects that: the design structure of the quadruple safety protection ensures that the cuvette cannot explode due to high temperature, and has the advantages of high safety, good stability, reliability, practicability and longer service life.
Drawings
The invention is described in detail below with reference to the drawings and the detailed description;
fig. 1 is a schematic structural view of the present invention.
Detailed Description
The invention is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
Referring to fig. 1, the present embodiment adopts the following technical scheme: the utility model provides a quadruple safety protection high temperature high pressure digestion system, including clamp 1, coupling 2, high temperature high pressure corrosion-resistant lower solenoid valve 3, lower polytetrafluoroethylene pipeline 4, install piece 5 under the cuvette, cuvette mount pad 6, cuvette 7, temperature collector 8, cuvette compact heap 9, hold-down spring 10, hold-down screw 11, go up polytetrafluoroethylene pipeline 12 and corrosion-resistant ordinary pressure's last solenoid valve 13, lower solenoid valve 3, go up solenoid valve 13 respectively through lower polytetrafluoroethylene pipeline 4, go up polytetrafluoroethylene pipeline 12 and cuvette 7 are connected, two pipe ends of lower polytetrafluoroethylene pipeline 4 are fixed respectively on the lower solenoid valve 3 through coupling 2, the lower extreme of cuvette 7, go up polytetrafluoroethylene pipeline 12 two pipe ends are fixed respectively on cuvette 7's upper end through coupling 2, go up solenoid valve 13, all install clamp 1 on the pipeline that coupling 2 and lower polytetrafluoroethylene pipeline 4, it is last to go up polytetrafluoroethylene pipeline 12 are connected, cuvette 7 passes through cuvette lower mount pad 5 to be fixed on cuvette mount pad 6, the upper end of cuvette 7 is provided with cuvette compact heap 9, cuvette compact heap 9 and temperature collector 7 are gone up to the cuvette 10 and be matched with to install to the temperature collector 7.
It is worth noting that the upper port and the lower port of the cuvette 7 are of flat sealing port structures so as to avoid air leakage, water leakage and acid leakage, the upper port and the lower port are respectively provided with an upper O-shaped ring 15 and a lower O-shaped ring 14, and the upper O-shaped ring 15 and the lower O-shaped ring 14 are fluororubber rings, so that long-term effective operation under high-temperature and high-pressure environments is ensured.
Notably, the cuvette 7 adopts quartz glass, has strong light transmittance, can realize light passing of 190nm-1000nm, has the characteristics of repeated heating, high temperature and high pressure corrosion resistance and the like, is acid and alkali resistant, can resist concentrated sulfuric acid with the temperature of 200 ℃ of 98%, and ensures that the mixture of sulfuric acid and a reagent is heated to 200 ℃ without bursting; the colorimetric pool 7 is welded with a plurality of spherical protruding semicircular rings which are also made of quartz glass, and heating wires are wound on the semicircular rings, so that the heating wires can be better attached to the high-temperature high-pressure digestion colorimetric device.
Notably, the lower cuvette mounting block 5 and the cuvette compacting block 9 are made of polytetrafluoroethylene so as to ensure the safety and applicability of the system.
In addition, the cuvette mounting seat 6 adopts an integrated structure, so that the mounting time is greatly saved, the mounting steps are simplified, and the deviation caused by the assembly of different modules is reduced.
The specific implementation mode has the four-fold safety protection function: wherein, the first layer protection is temperature collector 8, and temperature collector 8 adopts Pt100 temperature collector, and temperature collector 8 and PLC collection module hookup, and PLC passes through PID temperature control and realizes heating, in heating and digestion process, in case the system heats more than certain time, the system can automatic alarm.
The second layer of protection is a compression spring 10, the compression spring 10 is a high-strength stainless steel spring, the spring is matched with a compression screw 11, so that the pressure and the pressure of the cuvette are well matched, the purpose of safety protection is achieved, when the compression screw 11 is screwed to the lowest end, the pressure of the compression spring 10 calculated according to Hooke's law is smaller than the pressure of the cuvette with the temperature higher than 180 ℃, namely, if the heating temperature in the cuvette 7 exceeds 180 ℃, the compression spring 10 can automatically open the pressure relief.
The third layer is protected to be an upper electromagnetic valve 13 with corrosion resistance and common pressure, the electromagnetic valve is customized according to the requirement, namely, when the temperature of the colorimetric pool 7 exceeds 178 ℃, the upper electromagnetic valve 13 is automatically jacked up by air pressure, so that the aim of automatic pressure relief is fulfilled.
The fourth layer of protection is clamp 1, and when the temperature of cuvette 7 exceeds 200 ℃, the pressure of entire system is conducted to the pipeline, and then thrust is higher than the biggest clamping force of clamp 1 design, and the pipeline drops automatically and releases pressure to guarantee that the system can not appear exploding.
The specific embodiment is used for high-temperature high-pressure digestion test in the test process of the online monitor, can be used for digestion and colorimetry, has a unique quadruple protection structure, ensures that once temperature control is out of control in the digestion process, three safety pressure release channels exist, so that explosion of a colorimetric pool caused by high temperature is avoided, instrument and equipment are protected, personal safety is guaranteed, and the online monitor has a wide market application prospect.
The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. The quadruple safety protection high-temperature high-pressure digestion system is characterized by comprising a clamp (1), a pipe joint (2), a high-temperature high-pressure corrosion-resistant lower electromagnetic valve (3), a lower polytetrafluoroethylene pipeline (4), a lower colorimetric pool mounting block (5), a colorimetric pool mounting seat (6), a colorimetric pool (7), a temperature collector (8), a colorimetric pool compression block (9), a compression spring (10), a compression screw (11), an upper polytetrafluoroethylene pipeline (12) and an upper electromagnetic valve (13) with corrosion-resistant common pressure, wherein the lower electromagnetic valve (3) and the upper electromagnetic valve (13) are respectively connected with the colorimetric pool (7) through the lower polytetrafluoroethylene pipeline (4), the upper polytetrafluoroethylene pipeline (12) and the colorimetric pool (7), two pipe ends of the lower polytetrafluoroethylene pipeline (4) are respectively fixed on the lower electromagnetic valve (3) and the lower end of the colorimetric pool (7) through the pipe joint (2), the two pipe ends of the upper polytetrafluoroethylene pipeline (12) are respectively fixed on the upper end of the colorimetric pool (7) through the pipe joint (2), the upper electromagnetic valve (13) is connected with the lower polytetrafluoroethylene pipeline (4) through the upper polytetrafluoroethylene pipeline (12), the upper polytetrafluoroethylene pipeline (7) is connected with the upper polytetrafluoroethylene pipeline (7) through the pipe joint (1), the colorimetric pool (6) is mounted on the colorimetric pool (5) through the pipe joint (5), the upper end of the colorimetric pool (7) is provided with a colorimetric pool compression block (9), the colorimetric Chi Yajin block (9) is matched with a compression spring (10) and a compression screw (11), and a temperature collector (8) is arranged on the colorimetric pool (7);
The quadruple safety protection high-temperature high-pressure digestion system has a quadruple safety protection function: the first layer of protection is a temperature collector (8), the temperature collector (8) is connected with a PLC acquisition module, the PLC realizes heating through PID temperature control, and in the heating and digestion process, once the system is heated for more than a certain time, the system can automatically alarm;
the second layer of protection is a compression spring (10), the spring is matched with the compression screw (11) to realize good matching of pressure and the pressure of the cuvette (7), when the compression screw (11) is screwed to the lowest end, the pressure of the compression spring (10) is smaller than the pressure of the cuvette with the temperature higher than 180 ℃, namely if the heating temperature in the cuvette (7) exceeds 180 ℃, the compression spring (10) can automatically open for pressure relief;
The third layer is protected to be an upper electromagnetic valve (13) with corrosion resistance and common pressure, namely when the temperature of the colorimetric pool (7) exceeds 178 ℃, the upper electromagnetic valve (13) is automatically jacked up by air pressure;
And the fourth layer of protection is a clamp (1), when the temperature of the colorimetric pool (7) exceeds 200 ℃, the pressure of the whole system is conducted to the pipeline, the thrust is higher than the maximum clamping force designed by the clamp (1), and the pipeline automatically drops to release the pressure.
2. The quadruple safety protection high-temperature high-pressure digestion system according to claim 1, wherein the upper port and the lower port of the colorimetric pool (7) are of flat sealing port structures, an upper O-shaped ring (15) and a lower O-shaped ring (14) are respectively arranged on the upper port and the lower port, and the upper O-shaped ring (15) and the lower O-shaped ring (14) are fluororubber rings.
3. The quadruple safety protection high temperature and high pressure digestion system according to claim 1, wherein the temperature collector (8) is a Pt100 temperature collector.
4. The quadruple safety protection high-temperature high-pressure digestion system according to claim 1, wherein the cuvette (7) is a quartz glass cuvette; a plurality of spherical protruding semicircular rings are welded on the colorimetric pool (7), the semicircular rings are also made of quartz glass, and heating wires are wound on the semicircular rings.
5. The quadruple safety protection high-temperature high-pressure digestion system according to claim 1, wherein the lower colorimetric pool mounting block (5) and the colorimetric pool compacting block (9) are made of polytetrafluoroethylene.
6. The quadruple safety protection high-temperature and high-pressure digestion system according to claim 1, wherein the cuvette mounting base (6) adopts an integrated structure.
7. The quadruple safety protection high temperature and high pressure digestion system according to claim 1, wherein the compression spring (10) is a high strength stainless steel spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610412775.9A CN105973687B (en) | 2016-06-13 | 2016-06-13 | Quadruple safety protection high-temperature high-pressure digestion system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610412775.9A CN105973687B (en) | 2016-06-13 | 2016-06-13 | Quadruple safety protection high-temperature high-pressure digestion system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105973687A CN105973687A (en) | 2016-09-28 |
| CN105973687B true CN105973687B (en) | 2024-09-20 |
Family
ID=57010409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610412775.9A Active CN105973687B (en) | 2016-06-13 | 2016-06-13 | Quadruple safety protection high-temperature high-pressure digestion system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105973687B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108072559A (en) * | 2016-11-18 | 2018-05-25 | 上海安杰环保科技股份有限公司 | A kind of dual chamber digestion pool |
| CN109100208A (en) * | 2017-06-20 | 2018-12-28 | 中国石油化工股份有限公司 | High-pressure digestion tank |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101587044A (en) * | 2009-04-15 | 2009-11-25 | 广州市怡文科技有限公司 | High temperature high pressure enclosed counteraction apparatus and counteraction method thereof |
| CN102854054A (en) * | 2012-09-19 | 2013-01-02 | 江苏大学 | Quick sample injection and metering digestion reaction device for detecting COD (chemical oxygen demand) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1337342C (en) * | 1989-09-08 | 1995-10-17 | Wyatt P. Hargett | Ventable rupture diaphragm-protected container for heating contained materials by microwave radiation |
| CN204556366U (en) * | 2015-03-20 | 2015-08-12 | 胡自胜 | Intelligent environmental protection type electric heating counteract appearance |
-
2016
- 2016-06-13 CN CN201610412775.9A patent/CN105973687B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101587044A (en) * | 2009-04-15 | 2009-11-25 | 广州市怡文科技有限公司 | High temperature high pressure enclosed counteraction apparatus and counteraction method thereof |
| CN102854054A (en) * | 2012-09-19 | 2013-01-02 | 江苏大学 | Quick sample injection and metering digestion reaction device for detecting COD (chemical oxygen demand) |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105973687A (en) | 2016-09-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201540218U (en) | Nuclear power station secondary loop water vapor sampling and monitoring device | |
| US8441361B2 (en) | Methods and apparatuses for detection of properties of fluid conveyance systems | |
| CN104595726B (en) | natural gas pipeline system with leakage warning function | |
| CN105973687B (en) | Quadruple safety protection high-temperature high-pressure digestion system | |
| CN110697063A (en) | A closed-loop aircraft fuel tank onboard inerting system | |
| CN206038669U (en) | COD water quality automatic monitoring equipment | |
| CN107621340B (en) | A kind of metal hose Multifunction pressure tester | |
| CN101576552A (en) | Device and method for online monitoring of gas in oil immersed electric apparatus oil | |
| CN106289668B (en) | A method for detecting microcracks in high-temperature and high-pressure water pipelines using boron leakage | |
| CN208654145U (en) | A kind of water flow indicator having warning function | |
| KR20110127179A (en) | Degassing Valve and Check Valve Combination | |
| CN201188052Y (en) | Device for testing transformer wholly | |
| CN210953808U (en) | Tail gas detection device and unit applied to oil gas recovery processing system | |
| CN200986102Y (en) | Hydrogen safety control alarming device | |
| CN221612712U (en) | Combustible gas monitoring equipment arranged in dangerous environment | |
| CN205786054U (en) | Quadruple safeguard protection High Temperature High Pressure digestion system | |
| CN204613014U (en) | A kind of online auto injection microwave digestion device | |
| CN206990284U (en) | A kind of sampling sampling and testing device for shale gas exploitation | |
| CN106124287B (en) | High-temperature high-pressure digestion optical fiber colorimetric system | |
| CN116008310A (en) | Quick-installation online crude oil water content detection device and installation method thereof | |
| CN213364356U (en) | Portable hydrogen concentration sampling system | |
| CN103743602A (en) | Gas circulating apparatus applied to SF6 decomposer on-line monitoring equipment | |
| CN204574843U (en) | A kind of Industrial Stoves safety detection device | |
| CN210875371U (en) | Ion exchange column capable of being installed quickly | |
| CN203811371U (en) | Natural gas line bleeding valve on-line testing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: Block A5, Chuangzhi Valley, Huantai County, Zibo City, Shandong Province Applicant after: SHANDONG SIRUI ENVIRONMENTAL EQUIPMENT TECHNOLOGY Co.,Ltd. Address before: Huantai Dongtai County in Shandong province 255000 Zibo Road No. 38 Applicant before: SHANDONG SIRUI ENVIRONMENTAL EQUIPMENT TECHNOLOGY Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |