CN201096693Y - Quick testing instrument for water content - Google Patents
Quick testing instrument for water content Download PDFInfo
- Publication number
- CN201096693Y CN201096693Y CNU200720175299XU CN200720175299U CN201096693Y CN 201096693 Y CN201096693 Y CN 201096693Y CN U200720175299X U CNU200720175299X U CN U200720175299XU CN 200720175299 U CN200720175299 U CN 200720175299U CN 201096693 Y CN201096693 Y CN 201096693Y
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- pressure
- pressure sample
- bowl cover
- sensor signal
- electrically connected
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Abstract
The utility model discloses a rapid moisture-content measuring instrument, which comprises a pressure tank, the pressure tank comprises a pressure sample cup and a pressure sample cup cover that are matched tightly, the pressure sample cup cover is provided with a hollow cavity, the hollow cavity is provided with an opening part; a pressure sensor that is connected fixedly at the opening part and closes the hollow cavity of the pressure sample cup cover; a temperature sensor connected fixedly in the pressure tank; a pressure sensor signal processing circuit that is arranged in the hollow cavity of the pressure sample cup cover and connected electrically with the pressure sensor; a temperature sensor signal processing circuit that is arranged in the hollow cavity of the pressure sample cup cover and connected electrically with the temperature sensor; a power supply electrically connected in the pressure sensor signal processing circuit and the temperature sensor signal processing circuit. The utility model has the advantages of light mass, small volume, convenient carrying, small error, and real-time measurement.
Description
Technical field
The utility model relates to a kind of surveying instrument, concretely, relates to a kind of testing tool of measuring liquid water content in the sample.
Background technology
Liquid water content in the sample, particularly petroleum products usually adopts a certain amount of sample to mix with anhydrous solvent, carries out its moisture of determination of distillation and represents with percentage.This method test program is complicated and time-consuming, is not suitable for fast and on-the-spot the detection.In addition, (50～1000ppm) adopt the karl Fischer sample to carry out the solvent titration usually measures minor amount of water, and this method measurement range is narrow, is not suitable for using under with lubricated profit pollution condition.
The utility model content
The purpose of this utility model is at above-mentioned deficiency, and a kind of moisture teller is provided, but the moisture in fast measuring petroleum products and other material sample.
The technical solution of the utility model is: a kind of moisture fast measuring instrument comprises
Head tank comprises close-fitting pressure sample cup and pressure sample bowl cover, and described pressure sample bowl cover has cavity, and cavity has peristome;
Pressure transducer, fixing and be tightly connected in described peristome, with the cavity sealing of pressure sample bowl cover; Temperature sensor is fixed in the head tank;
The pressure sensor signal treatment circuit is positioned at the cavity of pressure sample bowl cover, is electrically connected with described pressure transducer;
The temperature sensor signal treatment circuit is positioned at the cavity of pressure sample bowl cover, is electrically connected with described temperature sensor; And
Power supply is electrically connected on pressure sensor signal treatment circuit and temperature sensor signal treatment circuit.
Preferably, also comprise computing circuit in the cavity of pressure sample bowl cover, be electrically connected on pressure sensor signal treatment circuit and temperature sensor signal treatment circuit, also be electrically connected on power supply.
Preferably, also comprise display circuit in the cavity of pressure sample bowl cover, be electrically connected on computing circuit, and display device, be fixed on pressure sample bowl cover top, be electrically connected on display circuit.
Preferably, also comprise input/output control circuit in the cavity of pressure sample bowl cover, be electrically connected on computing circuit, and IO interface, be fixed on pressure sample bowl cover, be electrically connected on input/output control circuit.
Preferably, described pressure sample cup and pressure sample bowl cover are by being threaded.
Preferably, described pressure sample rim of a cup is provided with O-ring seal.
Preferably, be provided with scale mark in the described pressure sample cup.
Principle of work of the present utility model is as follows, with test oil product moisture is example, at first getting the serial oil sample of different in moisture content accurately measures as standard oil, adopt pressure application to be determined at the pressure that produces gas under the specified temp then, be made in the moisture-pressure criteria curve under this temperature; After this, in pressure sample cup, add an amount of sample, solvent, and calcium hydride, cover pressure sample bowl cover, form airtight head tank, the vibration tank body makes sample, solvent, reaches calcium hydride and fully mixes, and the water reaction in calcium hydride and the oil produces hydrogen at this moment.Because the generation of hydrogen, the jar internal pressure changes, pressure transducer is converted into electric signal with this pressure, this electric signal is sent to the pressure sensor signal treatment circuit then, simultaneously, temperature sensor detects the temperature of reaction in this moment jar, and is translated into electric signal and delivers to the temperature sensor signal treatment circuit; If moisture fast measuring instrument of the present utility model also comprises computing circuit, then the result of pressure sensor signal treatment circuit and temperature sensor signal treatment circuit are all delivered to this computing circuit, according to the moisture under certain temperature that obtains in advance-pressure criteria curve, calculate the water content of oil product.Computing circuit can also be carried out correction program, can revise operation result by correction program.
The beneficial effects of the utility model are: the utility model adopts pressure application to be determined at the pressure that produces gas under the specified temp, be made in the moisture-pressure curve under this temperature, can measure the moisture in the sample indirectly according to the pressure that produces gas then.The whole instrument light weight, volume is little, is convenient for carrying; Program is simple, and is highly sensitive, and error is little, is fit to measure in real time; Select suitable pressure transducer and temperature sensor for use, can guarantee the measurement range of broad.
Description of drawings
Fig. 1 is the moisture fast measuring instrument structural perspective of the utility model embodiment;
Fig. 2 is the structure cut-open view of Fig. 1;
Fig. 3 is the circuit theory diagrams of the moisture fast measuring instrument of the utility model embodiment.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
With reference to Fig. 1,2, according to the moisture fast measuring instrument of first kind of embodiment of the utility model, comprise head tank 1, head tank 1 comprises close-fitting pressure sample cup 11 and pressure sample bowl cover 12, and described pressure sample bowl cover 12 has cavity 13, and cavity 13 has peristome 14; Pressure sample cup 11 and pressure sample bowl cover 12 can pass through thread seal, and pressure sample cup 11 mainly holds sample, solvent and sample, on pressure sample cup inwall scale 15 can be set, and think the placement amount of sample, solvent and sample.Head tank should bear the pressure of 5kg/m2 at least when carrying out the chemical reaction test, the size of pressure sample cup inside dimension is decided according to the test specification size, and pressure sample cup 11 and pressure sample bowl cover 12 materials can be selected the aluminium base through Nickel Plating Treatment for use.
With reference to Fig. 2,3, pressure transducer 2 is fixed and is tightly connected in described peristome 14, and after pressure transducer 2 and peristome 14 are connected, the cavity 13 of pressure sample bowl cover will be closed; Pressure transducer 2 can be any form of the prior art, and as the NTI-19A micro pressure sensor, its maximum range is 0.2MPa, and measuring error is 1%.In the cavity 13 of pressure sample bowl cover, be provided with pressure sensor signal treatment circuit 3, it is electrically connected with described pressure transducer; In order to the electric signal to pressure transducer 2 amplify, operation such as analog to digital conversion, obtain pressure value, in order to follow-up use.
With reference to Fig. 2,3, temperature sensor 4 is fixed in the head tank equally, has jar ability of interior temperature of surveying; Can adopt Pt100 type temperature sensor, its temperature measurement range is 0～100 ℃.The cavity 13 that is positioned at pressure sample bowl cover also is provided with temperature sensor signal treatment circuit 5, it is electrically connected with described temperature sensor, in order to the electric signal to temperature sensor 4 amplify, operation such as analog to digital conversion, obtain Temperature numerical, in order to follow-up use.
In the cavity 13 of pressure sample bowl cover, also be provided with power supply, be electrically connected on pressure sensor signal treatment circuit 3 and temperature sensor signal treatment circuit 5.
Preferably, can also comprise computing circuit 7 in the cavity of pressure sample bowl cover, it is electrically connected on pressure sensor signal treatment circuit 3 and temperature sensor signal treatment circuit 5, and it provides electric energy by power supply.Computing circuit 7 is compared in order to the moisture-pressure criteria curve under pressure value that the processing of pressure sensor signal treatment circuit 3 and temperature sensor signal treatment circuit 5 is attained the Way and Temperature numerical and certain temperature of preserving in advance, draws the moisture under this temperature.
Preferably, also comprise the display circuit 8 that is electrically connected on computing circuit 7 in the cavity of pressure sample bowl cover and be fixed on pressure sample bowl cover top, and be electrically connected on the display device 9 of display circuit 8.Wherein, computing circuit is delivered to display circuit 8 with moisture information and/or information such as temperature, pressure that processing obtains, and display circuit 8 drives display device 9 and displays it.
Preferably, also comprise the input/output control circuit 10 that is electrically connected on computing circuit and be fixed on pressure sample bowl cover and be electrically connected on the road IO interface 20 of input and output control electricity 10 in the cavity of pressure sample bowl cover.Wherein IO interface can be interfaces such as USB, RS232, RS485, and input/output control circuit 10 can be with the corresponding control circuit of above-mentioned interface.
In the present embodiment, pressure sensor signal treatment circuit 3, temperature sensor signal treatment circuit 5, computing circuit 7, display circuit 8 and input/output control circuit 10 can be installed on one or two pcb board 30.
Can also button 40 be set at end face, described button is connected with described display circuit, with control display device content displayed, as, displays temperature, pressure and/or moisture.
For the sealing of pressure boost sample cup 11 and pressure sample bowl cover 12, preferably, be provided with O-ring seal 16 at pressure sample rim of a cup.
Principle of work of the present utility model is as follows, with test oil product moisture is example, at first getting the serial oil sample of different in moisture content accurately measures as standard oil, adopt pressure application to be determined at the pressure that produces gas under the specified temp then, be made in the moisture-pressure criteria curve under this temperature; After this, in pressure sample cup, add an amount of sample, solvent, and calcium hydride, cover pressure sample bowl cover, form airtight head tank, the vibration tank body makes sample, solvent, reaches calcium hydride and fully mixes, and the water reaction in calcium hydride and the oil produces hydrogen at this moment.Because the generation of hydrogen, the jar internal pressure changes, pressure transducer is converted into electric signal with this pressure, this electric signal is sent to the pressure sensor signal treatment circuit then, simultaneously, temperature sensor detects the temperature of reaction in this moment jar, and is translated into electric signal and delivers to the temperature sensor signal treatment circuit; If moisture fast measuring instrument of the present utility model also comprises computing circuit, then the result of pressure sensor signal treatment circuit and temperature sensor signal treatment circuit are all delivered to this computing circuit, according to the moisture under certain temperature that obtains in advance-pressure criteria curve, calculate the water temperature content of oil product.Computing circuit can also be carried out correction program, can be to operation result is revised by correction program.
Claims (7)
1. a moisture fast measuring instrument is characterized in that: comprise
Head tank comprises close-fitting pressure sample cup and pressure sample bowl cover, and described pressure sample bowl cover has cavity, and cavity has peristome;
Pressure transducer, fixing and be tightly connected in described peristome, with the cavity sealing of pressure sample bowl cover; Temperature sensor is fixed in the head tank;
The pressure sensor signal treatment circuit is positioned at the cavity of pressure sample bowl cover, is electrically connected with described pressure transducer; The temperature sensor signal treatment circuit is positioned at the cavity of pressure sample bowl cover, is electrically connected with described temperature sensor; And
Power supply is electrically connected on pressure sensor signal treatment circuit and temperature sensor signal treatment circuit.
2. moisture fast measuring instrument according to claim 1 is characterized in that: also comprise computing circuit in the cavity of pressure sample bowl cover, be electrically connected on pressure sensor signal treatment circuit and temperature sensor signal treatment circuit, also be electrically connected on power supply.
3. moisture fast measuring instrument according to claim 1 and 2 is characterized in that: also comprises display circuit in the cavity of pressure sample bowl cover, is electrically connected on computing circuit, and display device, be fixed on pressure sample bowl cover top, be electrically connected on display circuit.
4. moisture fast measuring instrument according to claim 4, it is characterized in that: also comprise input/output control circuit in the cavity of pressure sample bowl cover, be electrically connected on computing circuit, and IO interface, be fixed on pressure sample bowl cover, be electrically connected on input/output control circuit.
5. moisture fast measuring instrument according to claim 1 is characterized in that: described pressure sample cup and pressure sample bowl cover are by being threaded.
6. moisture fast measuring instrument according to claim 1 is characterized in that: described pressure sample rim of a cup is provided with O-ring seal.
7. moisture fast measuring instrument according to claim 1 is characterized in that: be provided with scale mark in the described pressure sample cup.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720175299XU CN201096693Y (en) | 2007-08-30 | 2007-08-30 | Quick testing instrument for water content |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720175299XU CN201096693Y (en) | 2007-08-30 | 2007-08-30 | Quick testing instrument for water content |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201096693Y true CN201096693Y (en) | 2008-08-06 |
Family
ID=39923746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720175299XU Expired - Fee Related CN201096693Y (en) | 2007-08-30 | 2007-08-30 | Quick testing instrument for water content |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201096693Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104076130A (en) * | 2014-07-11 | 2014-10-01 | 中国人民解放军空军勤务学院 | Method for quickly detecting content of insoluble water in jet fuel |
| CN105241785A (en) * | 2015-11-03 | 2016-01-13 | 中煤科工集团重庆研究院有限公司 | Measurement device of drilling cuttings methane desorption index K1 value |
| CN111175179A (en) * | 2020-03-12 | 2020-05-19 | 山东省产品质量检验研究院 | Detection method for detecting water in lubricating oil |
-
2007
- 2007-08-30 CN CNU200720175299XU patent/CN201096693Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104076130A (en) * | 2014-07-11 | 2014-10-01 | 中国人民解放军空军勤务学院 | Method for quickly detecting content of insoluble water in jet fuel |
| CN105241785A (en) * | 2015-11-03 | 2016-01-13 | 中煤科工集团重庆研究院有限公司 | Measurement device of drilling cuttings methane desorption index K1 value |
| CN111175179A (en) * | 2020-03-12 | 2020-05-19 | 山东省产品质量检验研究院 | Detection method for detecting water in lubricating oil |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |