CN201662445U - Mercurial thermometer fluid adding device - Google Patents
Mercurial thermometer fluid adding device Download PDFInfo
- Publication number
- CN201662445U CN201662445U CN2010201735623U CN201020173562U CN201662445U CN 201662445 U CN201662445 U CN 201662445U CN 2010201735623 U CN2010201735623 U CN 2010201735623U CN 201020173562 U CN201020173562 U CN 201020173562U CN 201662445 U CN201662445 U CN 201662445U
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- China
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- filtrator
- valve
- mercury
- diffusion pump
- divider
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Abstract
A mercurial thermometer fluid adding device comprises a distributor connected with a mercurial thermometer needing fluid adding. A first joint of the distributor is communicated with a diffusion pump via a vacuum valve, the diffusion pump is connected with the vacuum valve, a second joint of the distributor is connected with a nitrogen gas source via a cleaning valve, a third joint of the distributor is connected with a mercury container via a fluid adding valve, the mercury container is connected with a relief valve, the vacuum valve is connected with a low-temperature condensation tank with condensation temperature of -50 DEG C, the low-temperature condensation tank is connected with an air inlet pipe of a filter, and an air outlet pipe of the filter is connected with the diffusion pump. The mercurial thermometer fluid adding device has the advantages of effective elimination of environmental pollution and fine environmental protection.
Description
Technical field
The utility model belongs to mercury thermometer process equipment field, especially a kind of device of using for the pressure-type mercury-filled thermometer liquid feeding.
Background technology
It is several that pressure-type thermometer can be divided into gaseous tension formula thermometer, vapor pressure formula thermometer and fluid pressure formula thermometer, is made up of temperature sensing part, kapillary, protection tube, flexible member, gear train, dial plate etc. usually.Wherein temperature sensing part, kapillary, flexible member are formed airtight work system, and airtight work system inside is full of actuating medium.The principle of work of pressure-type thermometer is for inserting in the measured medium when temperature sensing part, influenced by medium temperature, the volume or the pressure of thermometer bulb internal work medium change, through kapillary this variation is passed to flexible member (as Bourdon tube), the flexible member distortion, free end produces displacement, drives pointer by gear train and indicate Temperature numerical on the scale dish.
The actuating medium of pressure-type thermometer is commonly used gas, dimethylbenzene, alcohol, a mercury etc., all needs to use liquid-adding device when jar advancing in the airtight work system in that actuating medium is filled.When being used for being actuating medium with mercury, used device when filling jar actuating medium mercury.Mercury is because its unique advantage is a pressure-type thermometer actuating medium commonly used.But often cause environmental pollution in process of production easily, mainly be reflected in following three aspects:
1, during vacuum drawn, the air of extracting out is not done any filtration promptly directly enter air, and often exist the particulate of many mercury in the air of extracting out, this will pollute air.
2, after a collection of thermometer is finished liquid feeding work and is pulled down in production run in the past, before second batch of thermometer loaded onto, pipeline is cleared up in advance, get rid of the remaining mercury in the pipeline, in scale removal process, because pressure reduction, a large amount of mercury is having under the effect of pressing nitrogen, from the ejection of thermometer access port, cause severe contamination with vaporific to environment.
Pollute when 3, the liquid feeding kapillary seals.
Summary of the invention
In order to overcome the deficiency that causes environmental pollution, feature of environmental protection difference easily of existing mercury thermometer liquid-adding device, the mercury thermometer liquid-adding device that the utility model provides a kind of effective elimination environmental pollution, has favorable environment protection.
The technical scheme that its technical matters that solves the utility model adopts is:
A kind of mercury thermometer liquid-adding device, comprise the divider that is connected with the mercury thermometer for the treatment of liquid feeding, first interface of described divider is communicated with diffusion pump by vacuum valve, described diffusion pump is connected with vacuum pump, second interface of described divider is connected with the nitrogen source of the gas by clearing valve, the 3rd interface of described divider is connected with mercury container by charging valve, described mercury container is connected with blowdown valve, described vacuum valve connection condensing temperature is-50 ℃ a cryogenic condensation groove, described cryogenic condensation groove connects the draft tube of filtrator, and the escape pipe of described filtrator is connected with described diffusion pump.
Further, described filtrator is the tandem type filtrator, described tandem type filtrator comprises glycerine filtrator and water filter, described cryogenic condensation groove is connected with the draft tube of glycerine filtrator, the escape pipe of described glycerine filtrator is connected with the draft tube of water filter, and the escape pipe of described water filter is connected with described diffusion pump.
Technical conceive of the present utility model is: increased filtration unit, this is that the liquid feeding equipment of prior art is unexistent, and with reference to air water filtration, purification principle commonly used in the pharmaceutical industry, characteristics according to mercury pressure formula thermometer production run, taked the method for cryogenic condensation, water filtration and glycerine filtering technique to guarantee that in the vacuum drawn process, environment is not contaminated;
Having adopted the cryogenic condensation technology, because mercury can distil at normal temperatures, is under certain vacuum still more, therefore exists a large amount of mercury vapour and particulate thereof in the air that extracts.The condensing temperature of considering mercury is 39.5 ℃, and the present invention adopts vacuum line through in-50 ℃ of low temperature alcohol, makes its condensation, thereby can reduce, eliminate airborne mercury vapour and particulate thereof, and it is right to reach the order that reduces or eliminates the mercury environmental pollution.
Increased air filter, filtered then and the air that extracts can be purified, reached pollution-freeization environment by water filtration and glycerine.
Improved liquid feeding technology,, improved production technology, determined after preceding a collection of thermometer liquid feeding is finished, a collection of thermometer in back has been inserted liquid-adding device, carried out the pipeline cleaning again, just can occur avoiding this pollution fully through after a large amount of tests.
The beneficial effects of the utility model mainly show: effectively eliminate environmental pollution, have favorable environment protection.
Description of drawings
Fig. 1 is a bowden tubular type mercury thermometer liquid feeding system works flow process structural drawing.
Fig. 2 is the workflow diagram of the state of vacuumizing.
Fig. 3 is the workflow diagram that adds liquid status.
Fig. 4 is the workflow diagram of pipeline cleaning state.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
With reference to Fig. 1～Fig. 4, a kind of mercury thermometer liquid-adding device, comprise the divider 1 that is connected with the mercury thermometer for the treatment of liquid feeding, first interface of described divider 1 is communicated with diffusion pump 14 by vacuum valve 3, described diffusion pump 14 is connected with vacuum pump 15, second interface of described divider 1 is connected with nitrogen source of the gas 17 by clearing valve 4, the 3rd interface of described divider 1 is connected with mercury container 11 by charging valve 5, described mercury container 11 is connected with blowdown valve 10, described vacuum valve 3 connection condensing temperatures are-50 ℃ cryogenic condensation groove 18, described cryogenic condensation groove 18 connects the draft tube of filtrator, and the escape pipe of described filtrator is connected with described diffusion pump 14.
Described filtrator is the tandem type filtrator, described tandem type filtrator comprises glycerine filtrator 12 and water filter 13, described cryogenic condensation groove 18 is connected with the draft tube of glycerine filtrator 12, the escape pipe of described glycerine filtrator 12 is connected with 13 draft tube of water filter, and the escape pipe of described water filter 13 is connected with described diffusion pump 14.
The 4th interface of divider 1 is connected with vacuum meter 2, and described mercury container 11 is connected with tensimeter 8, and the exit of described nitrogen source of the gas 17 is provided with nitrogen valve 16.Described clearing valve 4 is connected with first interface of threeway divider 6, and second interface of described threeway divider connects with nitrogen valve 16, and the 3rd interface of described threeway divider is connected with pressurizing valve 9; Described pressurizing valve 9 is connected with first interface of four-way divider 7, and second interface of described four-way divider is connected with mercury container 11, and the 3rd interface of described four-way divider is connected with tensimeter 8, and the 4th interface of described four-way divider is connected with blowdown valve 10.
The liquid feeding object of present embodiment is a bowden tubular type mercury thermometer, its course of work is: at first carry out vacuum drawn to adding liquid systems, with reference to Fig. 2, behind pressure-type thermometer 19 access liquid feeding equipment, opening vacuum pump 152 and diffusion pump 14 and vacuum valve 3 extracts the air in the system out, by the air in the extraction system, make system keep higher vacuum, the vacuum tightness of system is reached-0.95Mpa, to the air process cryogenic condensation groove of extracting out 18, thereby can reduce, eliminate airborne mercury vapour and particulate thereof, passing through glycerine filtrator 12 and water filter 13, the air that extracts is further purified, do not contain the steady medium of volatile survey, avoid pollution air with the air of guaranteeing to extract out.
After the extracting vacuum, pressure thermometer is carried out liquid feeding,, close vacuum valve 3, make the vacuum tightness of the maintenance-0.95Mpa of system with reference to Fig. 3.Open charging valve 5, the mercury in the mercury container 11 with in certain pressure injected system, after perfusion is finished, is sealed liquid feeding kapillary 20 under the prerequisite of maintenance system pressure., make temp measuring system form a closed system, open blowdown valve 10 simultaneously, make the pressure that adds liquid systems be reduced to the normal temperature state, pressure-type thermometer 19 is pulled down, finish a liquid feeding job.
After liquid feeding is finished, carry out the pipeline cleaning work, with reference to Fig. 4, behind new pressure-type thermometer 19 access liquid feeding equipment, open pipeline clearing valve 4 and nitrogen valve 16, insert nitrogen source of the gas 17, remaining actuating medium in the pipeline is cleared up, avoid remaining actuating medium blocking pipeline, influence the work of vacuum drawn system, finally guarantee to add liquid systems can reach regulation when vacuumizing requirement.
Claims (2)
1. mercury thermometer liquid-adding device, comprise the divider that is connected with the mercury thermometer for the treatment of liquid feeding, first interface of described divider is communicated with diffusion pump by vacuum valve, described diffusion pump is connected with vacuum pump, second interface of described divider is connected with the nitrogen source of the gas by clearing valve, the 3rd interface of described divider is connected with mercury container by charging valve, described mercury container is connected with blowdown valve, it is characterized in that: described vacuum valve connection condensing temperature is-50 ℃ a cryogenic condensation groove, described cryogenic condensation groove connects the draft tube of filtrator, and the escape pipe of described filtrator is connected with described diffusion pump.
2. mercury thermometer liquid-adding device as claimed in claim 1, it is characterized in that: described filtrator is the tandem type filtrator, described tandem type filtrator comprises glycerine filtrator and water filter, described subcooling condenser is connected with the draft tube of glycerine filtrator, the escape pipe of described glycerine filtrator is connected with the draft tube of water filter, and the escape pipe of described water filter is connected with described diffusion pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201735623U CN201662445U (en) | 2010-04-29 | 2010-04-29 | Mercurial thermometer fluid adding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201735623U CN201662445U (en) | 2010-04-29 | 2010-04-29 | Mercurial thermometer fluid adding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201662445U true CN201662445U (en) | 2010-12-01 |
Family
ID=43232864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201735623U Expired - Fee Related CN201662445U (en) | 2010-04-29 | 2010-04-29 | Mercurial thermometer fluid adding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201662445U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102951590A (en) * | 2011-08-22 | 2013-03-06 | 江苏远望仪器有限公司 | Technology for filling conducting medium into single-hole closed small container |
-
2010
- 2010-04-29 CN CN2010201735623U patent/CN201662445U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102951590A (en) * | 2011-08-22 | 2013-03-06 | 江苏远望仪器有限公司 | Technology for filling conducting medium into single-hole closed small container |
| CN102951590B (en) * | 2011-08-22 | 2014-06-25 | 江苏远望仪器有限公司 | Technology for filling conducting medium into single-hole closed small container |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101201 Termination date: 20150429 |
|
| EXPY | Termination of patent right or utility model |