CN116447347A - Mechanical sampling metering valve - Google Patents
Mechanical sampling metering valve Download PDFInfo
- Publication number
- CN116447347A CN116447347A CN202310268655.6A CN202310268655A CN116447347A CN 116447347 A CN116447347 A CN 116447347A CN 202310268655 A CN202310268655 A CN 202310268655A CN 116447347 A CN116447347 A CN 116447347A
- Authority
- CN
- China
- Prior art keywords
- sampling
- cavity
- reagent
- metering valve
- handle
- 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.)
- Pending
Links
- 238000005070 sampling Methods 0.000 title claims abstract description 114
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 36
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 238000005192 partition Methods 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims description 6
- -1 polytetrafluoroethylene Polymers 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 claims description 3
- 230000014759 maintenance of location Effects 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 230000005611 electricity Effects 0.000 abstract description 5
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 8
- 229910052740 iodine Inorganic materials 0.000 description 8
- 239000011630 iodine Substances 0.000 description 8
- 238000000926 separation method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 229910052736 halogen Inorganic materials 0.000 description 5
- 150000002367 halogens Chemical class 0.000 description 5
- 239000006096 absorbing agent Substances 0.000 description 3
- 239000000700 radioactive tracer Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 239000000941 radioactive substance Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0605—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor with particular plug arrangements, e.g. particular shape or built-in means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
- F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0647—Spindles or actuating means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
-
- 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
Abstract
The invention relates to a mechanical sampling metering valve, which belongs to the technical field of metering sampling, and comprises a straight-through ball valve body, a handle, a ball body and a valve rod, wherein the handle is connected with the ball body through the valve rod; the metering valve further comprises a partition block, wherein the partition block is filled into the central position of the inner sphere channel through certain pressure, and the inner sphere channel is divided into a first sampling cavity and a second sampling cavity which are completely isolated and have the same volume; the first sampling cavity end and the second sampling cavity end are respectively used for connecting a liquid storage tank filled with a reagent to be taken or a retaining cavity for taking out the reagent; and the handle is rotated to control the sphere to rotate, and quantitative reagent is introduced into the retaining cavity from the liquid storage tank, so that quantitative sampling of the reagent is realized. The metering valve provided by the invention can realize quantitative sampling of any multiple of volume by rotating the handle for corresponding turns, has exquisite structural conception, can adjust the sampling quantity in a larger range, does not need electricity, and has simple and convenient operation and higher precision.
Description
Technical Field
The invention belongs to the technical field of metering sampling, and particularly relates to a mechanical sampling metering valve.
Background
The iodine absorber is key equipment of ventilation systems of nuclear facilities such as a nuclear power station and the like, and is used for absorbing gaseous radioactive iodine to realize gas purification after normal operation, especially after accidents. According to the periodic test supervision outline of the nuclear safety related system and equipment of the nuclear power station, the performance test of the iodine adsorber is carried out for each refueling cycle to detect the adsorption performance of the iodine adsorber. The ASME AG-1, N510 and ET791 standards specify that halogen gas can be used as a tracer to check the mechanical leak rate of an iodine adsorber (bank). The halogen gas used in general is a non-radioactive substance, and is easily adsorbed and desorbed by activated carbon, and for an iodine adsorber, the halogen gas leak test is a nondestructive test, which requires a halogen gas generator to generate the halogen gas required for the test.
In order to perform the leak detection test of the iodine absorber, a certain tracer is injected into the upstream of the iodine absorber, the system is suitable for a larger metering system in a sampling mode by a metering instrument, and the system with smaller air quantity has the defects of narrow metering range, low control precision and the like due to the small dosage of the tracer.
Disclosure of Invention
In order to solve the defects in the prior art, the invention aims to provide the mechanical sampling metering valve, the sampling amount of which can be adjusted in a larger range by using the sampling metering valve, electricity is not needed, and the mechanical sampling metering valve is simple and convenient to operate and has higher precision.
In order to achieve the above purpose, the invention adopts a technical scheme that:
a mechanical sampling metering valve, the metering valve comprises a straight-through ball valve body, a handle, a ball body and a valve rod, wherein the handle is connected with the ball body through the valve rod; the metering valve further comprises a partition block, wherein the partition block is filled into the central position of the inner sphere channel through certain pressure, and the inner sphere channel is divided into a first sampling cavity and a second sampling cavity which are completely isolated and have the same volume;
the first sampling cavity end and the second sampling cavity end are respectively used for connecting a liquid storage tank filled with a reagent to be taken or a retaining cavity for taking out the reagent; and the handle is rotated to control the sphere to rotate, and quantitative reagent is introduced into the retaining cavity from the liquid storage tank, so that quantitative sampling of the reagent is realized.
Further, the mechanical sampling metering valve as described above, the volume of the first sampling chamber and the second sampling chamber ranges from 0.1ml to 1ml.
Further, the mechanical sampling metering valve described above determines the number of turns of the rotatable handle required based on the volumes of the first sampling chamber, the second sampling chamber and the amount of reagent required.
Further, in the mechanical sampling metering valve, the blocking block is in interference fit with the inner wall of the sphere channel.
Further, the material of the partition block of the mechanical sampling metering valve has proper elastoplasticity and corrosion resistance.
Further, in the mechanical sampling metering valve, the material of the separation block is polytetrafluoroethylene or polypropylene.
The sampling metering method of the mechanical sampling metering valve comprises the following steps:
s1, connecting the end of the first sampling cavity with a liquid storage tank filled with a reagent to be taken out, and connecting the end of the second sampling cavity with a retaining cavity for taking out the reagent;
s2, calculating the number of turns of a handle to be rotated according to the volumes of the first sampling cavity and the second sampling cavity and the required dosage of the reagent;
s3, introducing the reagent with the required volume into the retention cavity from the liquid storage tank by rotating the handle for the number of turns, and then releasing the reagent from the retention cavity.
The mechanical sampling metering valve has the following remarkable technical effects:
according to the invention, through modifying the two-way ball valve, the partition block is filled in the center position in the ball body, the ball body channel is divided into the first sampling cavity and the second sampling cavity which are completely isolated and have the same volume, quantitative sampling of any multiple volume can be realized by rotating the handle to correspond to the number of turns, the structural conception is exquisite, the sampling quantity can be adjusted in a larger range, electricity is not required, and the operation is simple and convenient and the precision is higher.
Drawings
FIG. 1 is a schematic diagram of a prior art two-way ball valve;
FIG. 2 is a schematic diagram of a mechanical sampling metering valve according to an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating operation of the sample metering valve of FIG. 2;
FIG. 4 is a flow chart of a sample metering method of the sample metering valve of FIG. 2;
in fig. 2 and 3: 1-first sampling cavity, 2-second sampling cavity, 3-separation block, 4-through ball valve body, 5-handle, 6-spheroid.
Detailed Description
The invention will be further described with reference to specific examples and figures of the specification.
Aiming at the problems of limited measuring range, low electromagnetic or manual control precision and the like of the metering instrument in the background technology, the invention provides the mechanical sampling metering valve which is skillfully improved by the two-way ball valve, can regulate the sampling amount in a larger range, does not need electricity, and has simple and convenient operation and higher precision.
Fig. 1 is a schematic structural diagram of a two-way ball valve in the prior art, fig. 2 is a schematic structural diagram of a mechanical sampling metering valve provided in an embodiment of the present invention, and the sampling metering valve is a modification of the two-way ball valve, and includes a through ball valve body 4, a handle 5, a ball 6, a valve rod, and a partition block 3 filled in a central position of a ball channel, where the partition block 3 is filled in the central position of the ball channel by a certain pressure, and divides the ball channel into a first sampling cavity 1 and a second sampling cavity 2 which are completely isolated and have the same volume.
The volume of the first sampling chamber 1 and the second sampling chamber 2 depends on the size of the ball valve matrix used, and the volume of the first sampling chamber 1 and the second sampling chamber 2 is generally in the range of 0.1-1ml.
The separation block 3 is in interference fit with the inner wall of the sphere channel, so that zero leakage between the first sampling cavity 1 and the second sampling cavity 2 is realized.
The material of the separation block 3 has proper elastoplasticity and excellent corrosion resistance so as to ensure the tightness of the separation block 3 and the inner wall of the sphere channel and is not corroded by the reagent. In one embodiment, the material of the separation block 3 is polytetrafluoroethylene or polypropylene.
The working process of the sampling metering valve is as follows:
when the sampling metering valve is used, the end 1 of the first sampling cavity of the sampling metering valve is connected with a liquid storage tank filled with a reagent to be taken, and the end 2 of the second sampling cavity is connected with a retaining cavity for taking out the reagent. Fig. 3 shows the working principle of the sampling metering valve, specifically:
FIG. 3a shows the initial state of the sampling metering valve, where the first sampling chamber 1 is full of reagent and the second sampling chamber 2 is empty;
fig. 3b and 3c are a second state and a third state of the sampling metering valve, respectively, in which the first sampling chamber 1 is rotated to the initial position of the second sampling chamber 2 by rotating the handle 5 by 180 ° (fig. 3 b), the second sampling chamber 2 is rotated to the initial position of the first sampling chamber 1, and at this time, the first sampling chamber 1 is communicated with the holding chamber, and the second sampling chamber 2 is communicated with the liquid storage tank, so that a fixed amount of the reagent in the first sampling chamber 1 is introduced into the holding chamber from the liquid storage tank, and the second sampling chamber 2 is filled with the reagent (fig. 3 c);
fig. 3d shows a fourth state of the sampling metering valve, when the handle is rotated for 180 ° continuously, the first sampling cavity 1 is rotated back to the initial position, the second sampling cavity 2 is rotated back to the initial position, at this time, the first sampling cavity 1 is communicated with the liquid storage tank, and the second sampling cavity 2 is communicated with the retaining cavity, so that the reagent in the second sampling cavity 2 is introduced into the retaining cavity from the liquid storage tank, and meanwhile, the first sampling cavity 1 is refilled with the reagent.
Calculating the number of turns of the rotary handle according to the required dosage of the reagent, repeating the steps until the required dosage is reached, and releasing the liquid in the retaining cavity together. For example, when the volumes of the first sampling cavity 1 and the second sampling cavity 2 are 0.1ml and the required dosage of the reagent is 1ml, the requirement of rotating the handle for 5 circles is calculated, the volume of the reagent in the retaining cavity is 1ml after the handle is rotated for 5 circles, and the reagent in the retaining cavity is released together.
According to the mechanical sampling metering valve provided by the invention, the two-way ball valve is modified, the partition block is filled in the center position in the ball body, the ball body channel is divided into the first sampling cavity and the second sampling cavity which are completely isolated and have the same volume, quantitative sampling of any volume can be realized by rotating the handle to correspond to the number of turns, the structural conception is exquisite, the sampling quantity can be adjusted in a larger range, electricity is not required, and the mechanical sampling metering valve is simple and convenient to operate and has higher precision.
The above-described embodiments are merely illustrative of the present invention, which may be embodied in other specific forms or with other specific forms without departing from the spirit or essential characteristics thereof. The described embodiments are, therefore, to be considered in all respects as illustrative and not restrictive. The scope of the invention should be indicated by the appended claims, and any changes that are equivalent to the intent and scope of the claims are intended to be encompassed within the scope of the invention.
Claims (7)
1. The mechanical sampling metering valve comprises a straight-through ball valve body (4), a handle (5), a ball body (6) and a valve rod, wherein the handle (5) is connected with the ball body (6) through the valve rod, and the mechanical sampling metering valve is characterized by further comprising a partition block (3), wherein the partition block (3) is filled into the central position of an inner channel of the ball body (6) through certain pressure, and the inner channel of the ball body is divided into a first sampling cavity (1) and a second sampling cavity (2) which are completely isolated and have the same volume;
the end of the first sampling cavity (1) and the end of the second sampling cavity (2) are respectively used for connecting a liquid storage tank filled with a reagent to be taken or a retention cavity for taking out the reagent; the handle (5) is rotated to control the rotation of the sphere (6), and a quantitative reagent is introduced into the retaining cavity from the liquid storage tank, so that quantitative sampling of the reagent is realized.
2. The mechanical sampling metering valve according to claim 1, characterized in that the volume of the first sampling chamber (1) and the second sampling chamber (2) ranges from 0.1 to 1.0ml.
3. Mechanical sampling metering valve according to claim 1 or 2, characterized in that the number of turns of the rotary handle required is determined according to the volumes of the first sampling chamber (1), the second sampling chamber (2) and the amount of reagent required.
4. A mechanical sampling metering valve according to claim 1, characterized in that the block (3) is an interference fit with the inner wall of the sphere channel.
5. Mechanical sampling metering valve according to claim 4, characterized in that the material of the block (3) has suitable elastoplasticity and corrosion resistance.
6. The mechanical sampling metering valve according to claim 5, characterized in that the material of the partition block (3) is polytetrafluoroethylene or polypropylene.
7. A sampling metering method of a mechanical sampling metering valve according to any of claims 1 to 5, comprising the steps of:
s1, connecting the end of the first sampling cavity (1) with a liquid storage tank filled with a reagent to be taken out, and connecting the end of the second sampling cavity (2) with a retaining cavity for taking out the reagent;
s2, calculating the number of turns of a rotary handle according to the volumes of the first sampling cavity (1) and the second sampling cavity (2) and the required dosage of the reagent;
s3, introducing a required volume of reagent from the liquid storage tank into the retaining cavity by rotating the handle (5) for the number of turns, and then releasing the reagent from the retaining cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310268655.6A CN116447347A (en) | 2023-03-16 | 2023-03-16 | Mechanical sampling metering valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310268655.6A CN116447347A (en) | 2023-03-16 | 2023-03-16 | Mechanical sampling metering valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116447347A true CN116447347A (en) | 2023-07-18 |
Family
ID=87134725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310268655.6A Pending CN116447347A (en) | 2023-03-16 | 2023-03-16 | Mechanical sampling metering valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116447347A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117049623A (en) * | 2023-10-11 | 2023-11-14 | 江苏欧跃环保科技有限公司 | Sampling detection device, sewage conveying system using same and conveying method |
-
2023
- 2023-03-16 CN CN202310268655.6A patent/CN116447347A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117049623A (en) * | 2023-10-11 | 2023-11-14 | 江苏欧跃环保科技有限公司 | Sampling detection device, sewage conveying system using same and conveying method |
| CN117049623B (en) * | 2023-10-11 | 2024-01-02 | 江苏欧跃环保科技有限公司 | Sampling detection device, sewage conveying system using same and conveying method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108279182B (en) | Gas adsorbent evaluation device | |
| CN116447347A (en) | Mechanical sampling metering valve | |
| CN108020612B (en) | Device and method for analyzing content of trace impurities in hydrogen isotope gas and/or helium gas | |
| CN207148052U (en) | A kind of experimental provision of dynamic and static two methods detection adsorbent absorption property | |
| CN102128708A (en) | Helium airtightness testing tool for weld joints of ultra-high vacuum pressure-bearing pipes | |
| CN105427906B (en) | PHWR fuel element fission gas discharges and measuring system and technique | |
| CN112326500A (en) | Measuring method for adsorption and analysis of extremely low-amount hydrogen | |
| CN110954437B (en) | Carbonate content testing system and method | |
| CN111396629A (en) | Nuclear-grade instrument corrugated pipe stop valve | |
| CN104181075A (en) | Comprehensive hydrogen storage bed performance testing device and determination method using same | |
| CN107202743A (en) | A kind of Multi-example Static Adsorption test device and its method of testing | |
| CN202649071U (en) | Measuring apparatus for gas adsorption performance of solid powder | |
| CN114034604B (en) | Hydrogen related material comprehensive reaction system and test method thereof | |
| CN115792107A (en) | Mu Bq/m 3 Magnitude gas radon concentration measuring device | |
| CN107677582A (en) | A kind of method of testing and its device of lithium ion battery separator transparent liquid rate | |
| CN211824920U (en) | Vehicle-mounted liquid hydrogen valve inner leakage detection device | |
| CN107829905B (en) | High-pressure inflation valve body and high-pressure inflation system | |
| CN211235845U (en) | System for testing carbonate content in rock soil | |
| CN209814828U (en) | Device suitable for long-term storage original state groundwater | |
| US3393552A (en) | Method for leak testing a seal | |
| CN208568707U (en) | A kind of device based on air-flow method test foam static properties | |
| CN113654850A (en) | Sampling system and method for detecting leakage rate of seal box based on tracer method | |
| CN110095377A (en) | A kind of Spent Radioactive gas processing system active carbon delay unit performance test method | |
| CN112781860A (en) | Gas-liquid two-phase simulation test device and method for valve internal leakage | |
| CN206362614U (en) | Filler rod with filtering function and high temperature and high pressure gas adsorption instrument |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |