CN204043966U - Original position gas washing sampler - Google Patents
Original position gas washing sampler Download PDFInfo
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- CN204043966U CN204043966U CN201420489152.8U CN201420489152U CN204043966U CN 204043966 U CN204043966 U CN 204043966U CN 201420489152 U CN201420489152 U CN 201420489152U CN 204043966 U CN204043966 U CN 204043966U
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Abstract
The utility model provides a kind of original position gas washing sampler, and it comprises shell, inner casing, gas line and liquid line; Described casing is stacked in inner casing outside, and the receiving space in shell is spaced apart mezzanine space and inner space by inner casing; The top of mezzanine space communicates with ambient atmosphere, and bottom is then communicated with inner space by the gas dispersion apparatus being arranged on inner shell bottom; Gas line is communicated with inner space respectively with liquid line, and described gas line and liquid line are pipeline independent of each other, and the outer end interface of the two is connected to different back-end device respectively.Compared with prior art, gas line and the liquid line of the utility model original position gas washing sampler are independent line, without the need to specialized designs gas phase flow rate restriction orifice and gas-liquid separation device, and then decrease the configuration requirement to back-end device, also reduce the complicacy of operation and control.
Description
Technical field
The utility model relates to gas analysis field, particularly relates to a kind of original position gas washing sampler.
Background technology
There is the major accident of reactor core damage in nuclear power plant after, discharge various gas fission product along with in containment in reactor core damage process, these fission products are finally present in containment air with forms such as gasoloids.In order to judge the damage degree of reactor core, thus formulating severe accident relieving strategy targetedly, just needing to carry out sample analysis to containment air, to be analyzed the damaged condition of reactor core by the component in air.But the containment environment after major accident is severe, does not possess accessibility, therefore, needs gas sampling device to carry out the gas sample in containment.
Refer to Fig. 1, after the first accident existing, in containment, the core component of sampler is venturi-type eductors 10, and the throat of thrower 10 is connected with a gas sample pipeline 14 stretched out from the gas space in containment 12.The main propulsive medium of thrower 10 is compressed nitrogen, to spray and swiftly flowing nitrogen produces " negative pressure " in the throat of thrower 10 from nitrogen gas supply device 16, under the differential pressure action of the gaseous sample in containment 12 pressure and this " negative pressure " in containment, enter the throat of thrower 10 by gas sample pipeline 14 and enter gas sample bottle 18 together with high speed nitrogen, thus completing gas sample.But, due to the radiomaterial in containment air after accident, as the gasoloid etc. of iodine and inert gas, very easily there is sedimentation when gas coming through sampling line 14, rate of descent reaches as high as 90%, and this can have a strong impact on representativeness and the authenticity of acquired sample undoubtedly.
Refer to Fig. 2, after existing the second accident, in containment, sampler is then installed in containment in advance, it is by washing gaseous sample, thus makes effective sample can be transported to outside containment with metastable liquid state, to solve the defect of the first sampler above-mentioned.But this sampler also has the following disadvantages: 1) need, by the Venturi tube 20 being located at bottom of device, gaseous sample is become bubble, make the gaseous sample of generation bubbling effect flow through liquid reagent 22, just can complete gas scrubbing; Therefore, need for the specialized designs of Venturi tube 20 is carried out in this workplace, cost is higher; 2) gas phase pipeline 24 and liquid pipe 26 accumulate one, not entrained gas during in order to realize liquid phase suction, specialized designs flow restriction orifice plate 27 on gas phase pipeline 24 is needed to limit gas phase flow rate, also to need the connecting portion specialized designs gas-liquid separation device 28 at gas phase pipeline 24 and liquid pipe 26; 3) use of custom-designed Venturi tube 20, gas flow restriction orifice 27, gas-liquid separation device 28 etc., and the technological process of device gas washing, all higher to the configuration requirement of back-end device, and cause the operation relative complex of whole device.Some all improves the production cost of sampler in containment after the second accident above, and makes its method of operation be tending towards complicated.
Utility model content
The purpose of this utility model is: the original position gas washing sampler providing a kind of structure simple, with low cost, the sample representation difference problem caused to avoid effective constituent sedimentation, reduce the configuration requirement to back-end device simultaneously, reduce the complexity of plant running and control.
To achieve these goals, the utility model provides a kind of original position gas washing sampler, and it comprises shell, inner casing, gas line and liquid line; Described casing is stacked in inner casing outside, and the receiving space in shell is spaced apart mezzanine space and inner space by inner casing; The top of mezzanine space communicates with ambient atmosphere, and bottom is then communicated with inner space by the gas dispersion apparatus being arranged on inner shell bottom; Gas line is communicated with inner space respectively with liquid line, and described gas line and liquid line are pipeline independent of each other, and the outer end interface of the two is connected to different back-end device respectively.
One as the utility model original position gas washing sampler is improved, and described gas dispersion apparatus is static mixer, and it is arranged on the minimum point of whole inner casing.
One as the utility model original position gas washing sampler is improved, and interior end interface is arranged on the top of inner casing and is communicated with the top of inner space by described gas line.
One as the utility model original position gas washing sampler is improved, and described liquid line stretches into the bottom of inner casing and is communicated with the bottom of inner space.
One as the utility model original position gas washing sampler is improved, and the volume of described inner space is greater than the volume of mezzanine space.
One as the utility model original position gas washing sampler is improved, and described inner casing and shell are concentric column structure, and the bottom of the two is pyramidal structure.
One as the utility model original position gas washing sampler is improved, and described gas dispersion apparatus is arranged on the tip of inner casing pyramidal structure.
One as the utility model original position gas washing sampler is improved, and described shell offers some through holes on the perisporium near its top, and these through holes are positioned at same level height; The top of mezzanine space is communicated by the through hole of shell and ambient atmosphere.
Compared with prior art, gas line and the liquid line of the utility model original position gas washing sampler are independent line, without the need to specialized designs gas phase flow rate restriction orifice and gas-liquid separation device, and then decrease the configuration requirement to back-end device, also reduce the complicacy of operation and control.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model original position gas washing sampler and beneficial effect thereof are described in detail.
Fig. 1 is the basic principle schematic of the first gas sampling device existing.
Fig. 2 is the basic principle schematic of existing the second gas sampling device.
Fig. 3 is the structural representation of the utility model original position gas washing sampler.
Fig. 4 to Fig. 9 is the process schematic using the utility model original position gas washing sampler to carry out gas washing sampling.
Embodiment
In order to make goal of the invention of the present utility model, technical scheme and Advantageous Effects thereof more clear, below in conjunction with the drawings and specific embodiments, the utility model is further elaborated.Should be understood that, the embodiment described in this instructions is only used to explain the utility model, is not intended to limit the utility model.
Refer to Fig. 3, the utility model original position gas washing sampler comprises shell 30, inner casing 40, gas line 50 and liquid line 60; Wherein, shell 30 is nested in the outside of inner casing 40, and the receiving space in shell 30 is spaced apart relatively independent mezzanine space 32 and inner space 42 by inner casing 40; Gas line 50 is communicated with inner space 42 respectively with liquid line 60.
The main body of shell 30 is cylindrical, and bottom is then punctured into taper shape.Shell 30 offers some through holes 34 on the perisporium near its top, and these through holes 34 are positioned at circumferentially same; The top of mezzanine space 32 is communicated by through hole 34 and ambient atmosphere.
The shape of inner casing 40 is similar to shell 30, be also the cylindrical structural that bottom is punctured into circular cone, but 40 each several part diameters of inner casing is all less than shell 30, therefore can be nested in the inside of shell 30 in concentric manner, and shares a roof with shell 30; The volume of mezzanine space 32 and inner space 42 can obtain by designing or measuring, but the size design of inner casing 40 need ensure that the volume of inner space 42 is greater than the volume of mezzanine space 32.Inner casing 40 is provided with at the epiconus place of bottommost the gas dispersion apparatus 44 that runs through shell wall, thus mezzanine space 32 and inner space 42 are communicated with each other by gas dispersion apparatus 44.In order to reduce configuration requirement and the complicated operation degree of back-end device, gas dispersion apparatus 44 is preferably static mixer.The roof of inner casing 40 offers two respectively with gas line 50 and the suitable perforate of liquid line 60.
Gas line 50 is communicated with inner space 42 respectively by the corresponding perforate be opened on the roof of inner casing 40 with liquid line 60.The end of gas line 50 not through or only have a bit of roof through inner casing 40, the top of what therefore gas line 50 was communicated with is inner space 42, so that blast the inert gases such as nitrogen and extracting gases sample in inner casing 40.The end of liquid line 60 is through roof and stretch near gas dispersion apparatus 44 place bottom inner casing 40, and the bottom of what therefore liquid line 60 was communicated with is inner space 42, so that inject gas washing reagent and extracting liquid sample in inner casing 40.Not entrained gas during in order to ensure that liquid phase is aspirated, gas line 50 and liquid line 60 are set to without being connected and the independent line do not collected, and the two is connected from different back-end device respectively by respective outer end interface.
During installation, by the utility model original position gas washing sampler in advance mounted perpendicular in containment, and gas line 50 and liquid line 60 is connected respectively with back-end device through containment; Now, namely the top of mezzanine space 32 communicate by the air in through hole 34 and containment.When needs carry out sample analysis to containment air, such as, after the major accident of reactor core damage occurs in nuclear power plant, the utility model original position gas washing sampler is used to carry out gas sample by following steps:
1) loaded with liquid reagent: refer to Fig. 4, is filled with liquid reagent 70 by liquid line 60 to inner casing 40, and partially liq reagent 70 enters mezzanine space 32 by gas dispersion apparatus 44 and makes the fluid level of mezzanine space 32 and inner space 42; The charge of liquid reagent 70 should be not less than the volume (this volume obtains by designing or measuring) of mezzanine space 32, can pass through volume pump (as gear-type pump) and quantitatively ensure charge during operation;
2) quantitative liquid reagent is obtained: refer to Fig. 5, closing liquid pipeline 50, in inner casing 40, inert gas such as nitrogen 72 grade is blasted by gas line 50, by to measure or through the sufficient air-blowing time, ensure that the liquid reagent 70 in inner casing 40 is squeezed out inner space 42 by nitrogen 72 and all enters mezzanine space 32, through hole 34 from shell 30 top overflows by excess liq reagent 70 automatically that exceed mezzanine space 32 volume, thus obtains quantitative liquid reagent 70;
3) gas washing and gas sample: refer to Fig. 6, aspirated by the external interface of gas line 50, primary sample environment in containment and set up pressure reduction between gas line 50 external interface, under pressure differential, primary sample 74 enters mezzanine space 32 through the through hole 34 of shell 30 and liquid reagent 70 extruding is wherein entered inner casing 40; After liquid reagent 70 fully enters inner space 42, original gas sample 74 begins through gas dispersion apparatus 44 and enters inner casing 40, in this process, gas dispersion apparatus 44 will make original gas sample 74 be dispersed into tiny bubble, these tiny bubbles gravity and with the density difference effect of liquid reagent 70 under disperse to rise, via the gas-phase space entering inner casing 40 top after liquid reagent 70, and the external interface being finally transported to gas line 50 samples; Disperse in the process risen at gas line 50, the gasoloid wherein carried, dust and other component needing to dissolve in liquid reagent 70 are by the quantitative liquid reagent 70 that fully dissolves in inner casing 40; In fact, by the measurement means in gas line 50 external interface downstream, the gaseous sample total amount of gas scrubbing can have been recorded, thus stopped gas scrubbing as required, and obtain the liquid reagent sample 76 that can represent original gas sample 74 component ratio;
4) wall attachment cleaning: refer to Fig. 7, due to step 3) gas scrubbing in, original gas sample 74 is entering in the process of gas dispersion apparatus 44 through mezzanine space 32, the component of its free settling carried may be attached on the wall (namely the inwall of shell 30 and the outer wall of inner casing 40) of mezzanine space 32, thus make step 3) the liquid reagent sample 76 that makes loses representativeness, therefore must clean these attachments and dissolve again, representational liquid reagent sample accurately could be obtained truly; The specific works process of this step is close with second step, namely in inner casing 40, gas is blasted by gas line 50, by step 3) obtained liquid reagent sample 76 squeezes into mezzanine space 32 again, and by continuing air-blowing a period of time, make wall attachment fully dissolve in feed liquor body reagent sample 76; In the process, the gas blasted can be step 3) gas washing sampling time in the excess exhaust gas of backend collection, thus waste gas is returned in original samples space, avoids its environment or increase harmless treatment burden to external world; Because the gas that blasts can be formed bubbling effect by dispersion when the gas dispersion apparatus 44, the solute effect of wall attachment can be promoted equally; It is to be noted, due to step 3) volume of the total amount of liquid reagent sample 76 prepared and mezzanine space 32 is suitable, therefore do not have liquid reagent sample 76 in attachment course of dissolution to flow out from the through hole 34 of shell 30, and the attachment on the wall contacted with shell 30 gas-phase space in this process can not be dissolved in liquid reagent sample 76, because the reason of air current composition, these attachments are not step 3) free settling component in gas scrubbing entrained by washing gas;
5) reagent sample liquid level build-up: refer to Fig. 8, stop blasting gas in inner casing 40, make partially liq reagent sample 76 in mezzanine space 32 under the effect of pressure and gravity, turn back in the inner space 42 of inner casing 40 by gas dispersion apparatus 44 liquid, until the liquid level in inner space 42 and outer space 32 maintains an equal level, thus extract ready for next step liquid reagent sample 76;
6) liquid reagent sample extraction: refer to Fig. 9, close gas line 60, aspirated by the external interface of liquid line 60, liquid reagent sample 76 is by under the differential pressure action between original gas sample environmental pressure and liquid line 60 external interface, flow out from liquid line 60, make tester can obtain required liquid reagent sample 76 from external interface; It is to be noted, this sampling process should stop in time (sampling amount is monitored by the flow measurement device in back-end device) after obtaining necessary liquid reagent sample 76, to avoid, the gas dispersion apparatus 44 bottom inner casing 40 is exposed or liquid line 60 lower end is exposed, thus causes liquid reagent sample 76 suction gas in gas washing or liquid line 60 again;
7) cleaning of original position gas washing sampler: at completing steps 6) liquid reagent sample 76 extract after, by with step 1) similar process, injected clear water in the utility model original position gas washing sampler, the relevant wall of inner casing 40 and shell 30 is cleaned, to be that next gas washing sampling process is ready.
Known by describing above, the utility model original position gas washing sampler is by loading special sampling reagent in device, and make gaseous sample through special construction flow through sampling reagent complete cleaning, thus make to need the gasoloid of monitoring or other component to be trapped in sampling reagent with stable form, and then the Direct Analysis that substitutes gaseous sample is analyzed to sampling reagent.Therefore, can by this original position gas washing sampler being installed in advance the place at primary sample place, and be connected with the external environment condition of personnel Ke Da by outer end interface, thus by the combination of back-end device and interface, complete the sampling to primary sample, the inaccessible problem of the personnel that efficiently solve.Visible, the utility model is not only applicable to the sampling of air in containment after above-mentioned nuclear power plant accident, and is equally applicable to the occasion that there are original position gas sample demand in field or the institutes etc. such as other power plant, chemical industry, mine.
It should be noted that, because back-end device mainly coordinates the functional requirement of the utility model original position gas washing sampler, the outer end interface arranged by the utility model provides necessary gas and Liquid transfer function, its concrete configuration can be different pattern, and can be realized by prior art, therefore the utility model is no longer described in detail.Moreover, although above-mentioned scrubbing procedure is described for liquid reagent, but the concrete sampling types of agents used can be different and different according to application scenario with composition, consider and the compatibility sampling reagent, the material of each ingredient of the utility model original position gas washing sampler is also different because application scenario is different, therefore about the selection of sampling reagent and device materials does not carry out specified otherwise in this patent requires.
In addition, although in the embodiment shown in fig. 3, inner casing 40 and the shell 30 of the utility model original position gas washing sampler have made concentric cylindrical structure, but in other embodiments, the shape of the two and assembling mode can change to some extent, as long as jointly can be formed with partition and two separate space be connected by gas dispersion apparatus 44.In addition, being made into conical structure bottom inner casing 40 and shell 30 is to be conducive to when purge of gas, the overwhelming majority of liquid reagent 70 quantitative in advance can enter inner casing 40 and participate in gas scrubbing, to ensure the accuracy that sample component calculates, ensure that inner casing 40 participates in the homogeneity of the liquid reagent of gas washing simultaneously, in fact, as long as the junction of the two is made into the less structure of cross-sectional area, this function can be realized.
Compared with prior art, the utility model original position gas washing sampler at least has following beneficial effect:
1) can install in advance, without original samples environment reachability requirements, solve primary sample place bad environments, personnel are difficult to the problem arrived;
2) original position gas washing is carried out by loading liquid reagent 70 pairs of original gas sample in device, the component easily depositing in original gas sample 74, adhere to is trapped in liquid reagent 70 and forms the stable reagent sample of physical property 76, and the liquid reagent sample 76 being detained representative component is delivered to personnel's range coverage carries out back-end analysis, thus avoid the problem that the effective constituent sedimentation of gaseous sample 74 in sampling line course of conveying cause sampling distortion;
3) can quantitatively be filled with liquid reagent 70, and reflux cleaning can be carried out to attachment, thus the reagent sample 76 representing original gas sample information is accurately provided;
4) gas line 50 and liquid line 60 are pipeline independent of one another, without the need to specialized designs gas phase flow rate restriction orifice and gas-liquid separation device, and then decrease the configuration requirement to back-end device, also reduce the complicacy of operation and control;
5) adopt static mixer as gas dispersion apparatus 44, have with low cost, without the need to custom-designed advantage, reduce Design and manufacture cost;
6) whole apparatus structure is simple, without active component, therefore works more reliable.
The announcement of book and instruction according to the above description, the utility model those skilled in the art can also carry out suitable change and amendment to above-mentioned embodiment.Therefore, the utility model is not limited to embodiment disclosed and described above, also should fall in the protection domain of claim of the present utility model modifications and changes more of the present utility model.In addition, although employ some specific terms in this instructions, these terms just for convenience of description, do not form any restriction to the utility model.
Claims (8)
1. an original position gas washing sampler, comprises shell, inner casing, gas line and liquid line; Described casing is stacked in inner casing outside, and the receiving space in shell is spaced apart mezzanine space and inner space by inner casing; The top of mezzanine space communicates with ambient atmosphere, and bottom is then communicated with inner space by the gas dispersion apparatus being arranged on inner shell bottom; Gas line is communicated with inner space respectively with liquid line, it is characterized in that: described gas line and liquid line are pipeline independent of each other, and the outer end interface of the two is connected to different back-end device respectively.
2. original position gas washing sampler according to claim 1, is characterized in that: described gas dispersion apparatus is static mixer, and it is arranged on the minimum point of whole inner casing.
3. original position gas washing sampler according to claim 1, is characterized in that: interior end interface is arranged on the top of inner casing and is communicated with the top of inner space by described gas line.
4. original position gas washing sampler according to claim 1, is characterized in that: described liquid line stretches into the bottom of inner casing and is communicated with the bottom of inner space.
5. original position gas washing sampler according to claim 1, is characterized in that: the volume of described inner space is greater than the volume of mezzanine space.
6. original position gas washing sampler according to claim 1, is characterized in that: described inner casing and shell are concentric column structure, and the bottom of the two is pyramidal structure.
7. original position gas washing sampler according to claim 6, is characterized in that: described gas dispersion apparatus is arranged on the tip of inner casing pyramidal structure.
8. original position gas washing sampler according to claim 1, is characterized in that: described shell offers some through holes on the perisporium near its top, and these through holes are positioned at same level height; The top of mezzanine space is communicated by the through hole of shell and ambient atmosphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420489152.8U CN204043966U (en) | 2014-08-27 | 2014-08-27 | Original position gas washing sampler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420489152.8U CN204043966U (en) | 2014-08-27 | 2014-08-27 | Original position gas washing sampler |
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| CN204043966U true CN204043966U (en) | 2014-12-24 |
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| CN201420489152.8U Active CN204043966U (en) | 2014-08-27 | 2014-08-27 | Original position gas washing sampler |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109520788A (en) * | 2018-11-14 | 2019-03-26 | 彭圆 | A kind of atmosphere quality detection method |
| CN109520787A (en) * | 2018-11-14 | 2019-03-26 | 彭圆 | A kind of atmospheric environment detection device |
-
2014
- 2014-08-27 CN CN201420489152.8U patent/CN204043966U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109520788A (en) * | 2018-11-14 | 2019-03-26 | 彭圆 | A kind of atmosphere quality detection method |
| CN109520787A (en) * | 2018-11-14 | 2019-03-26 | 彭圆 | A kind of atmospheric environment detection device |
| CN109520788B (en) * | 2018-11-14 | 2021-01-19 | 江西尖锋环境检测技术有限公司 | Atmospheric environment quality detection method |
| CN109520787B (en) * | 2018-11-14 | 2021-02-12 | 安徽万维环保科技咨询有限公司 | Atmospheric environment detection equipment |
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