CN203758580U - Liquid level instrument probing bar with pressure-keeping mechanism - Google Patents
Liquid level instrument probing bar with pressure-keeping mechanism Download PDFInfo
- Publication number
- CN203758580U CN203758580U CN201420231082.6U CN201420231082U CN203758580U CN 203758580 U CN203758580 U CN 203758580U CN 201420231082 U CN201420231082 U CN 201420231082U CN 203758580 U CN203758580 U CN 203758580U
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- China
- Prior art keywords
- pressure
- probing bar
- probe
- head
- keeping mechanism
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- 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.)
- Expired - Lifetime
Links
- 239000007788 liquid Substances 0.000 title abstract 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 239000000523 sample Substances 0.000 claims description 55
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 238000005259 measurement Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
Landscapes
- Measuring Fluid Pressure (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
The utility model provides a liquid level instrument probing bar with a pressure-keeping mechanism. The liquid level instrument probing bar comprises a probing bar main body, a probing bar head, an oil floater and a water floater, wherein the probing bar, the oil floater and the water floater are sequentially connected to the probing bar main body; a waveguide wire is arranged in the probing bar main body; an end cover and a bottom cover are respectively connected to two ends of the probing bar head; the outer wall of the probing bar head is a movable outer cover which can move as the pressure changes; a fixing plate for fixing a circuit board is arranged in the probing bar head; both ends of the probing bar head are respectively connected with the end cover and the bottom cover by virtue of thread structures; O-shaped rings for sealing are arranged in parts, which are respectively contacted with the end cover and the bottom cover, of the probing bar head; two ends of the movable outer cover are respectively movably connected to the outer sidewalls of the end cover and the bottom cover. By virtue of adopting the liquid level instrument probing bar with the pressure-keeping mechanism, the influence of the change in temperature on the stability of pressure in the probing bar can be removed, thus the influence of pressure to the internal waveguide wire is removed, and the accurate measurement of the probing bar in use can be realized; by virtue of adopting the simple pressure-keeping mechanism, the internal pressure of the probing bar is stable, the structure is compact and practical, and the measurement operation is reliable and stable.
Description
Technical field
The utility model relates to tank gage probe, relates in particular to a kind of tank gage probe with pressure-keeping mechanism.
Background technology
At present, the automobile pollution of China is increasing, and along with getting more and more of automobile, the quantity of refuelling station is also participated in thereupon; Petrol station automated management system is because of its high efficiency, accuracy and being used in a large number.Tank gage is that modernization refuelling station is prerequisite as the most basic measuring system of petrol station automated management system, and probe is as the direct measurement mechanism of this measuring system, has played especially vital effect.But current probe, in the time of design, is not all considered the impact of underground petrol tank temperature variation on probe measurement accuracy.Traditional probe adopts hermetically-sealed construction, according to the Clapyron Equation in physics, PV=(m/M) RT learns, in the time of temperature variation, the in the situation that of constancy of volume, pressure and temperature relation in direct ratio, be that temperature is higher, pressure in probe is larger, will directly affect the measuring accuracy of probe, brings the systematic error of measurement.
Utility model content
The purpose of this utility model is to provide a kind of tank gage probe with pressure-keeping mechanism, and it can keep the stable of probe internal pressure, probe is measured more accurate.
The utility model is achieved like this, it comprises probe main body and is connected to probe head, oil float and the water float in probe main body in turn, in probe main body, be also provided with waveguide filament, it is characterized in that, described probe head two ends are link lid and bottom lid respectively, the outer wall of probe head is the mobile outer cover that can be subjected to displacement with pressure change, is provided with the fixed head for fixing circuit board in probe head.
Preferred structure is: the two ends of described probe head are connected with bottom with end cap by helicitic texture respectively, and described probe head and end cap and bottom contact position are equipped with the O type circle for sealing.
The two ends of described mobile outer cover are movably connected in respectively on end cap and bottom lateral wall; Described end cap and bottom all have the three-jaw handle for rotation is installed.
The beneficial effects of the utility model are: the utility model can be eliminated the impact of temperature variation on probe internal pressure stabilises, then eliminate the impact of pressure on inner waveguide filament.Probe is in use measured more accurate; The utility model adopts simple pressure-keeping mechanism can allow probe internal pressure stabilises, and compact conformation practicality is measured operation reliable and stable.
Brief description of the drawings
The contour structures schematic diagram that Fig. 1 is.
Fig. 2 is the section of structure of A-A in Fig. 1.
Fig. 3 is the section of structure of B-B in Fig. 2.
Probe head 2, probe main body 3, oil float 4, water float 5, O type circle 6, end cap 7, fixed head 8, mobile outer cover 9, bottom 10, waveguide filament 11, three-jaw handle in the drawings, 1.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further,
As everyone knows, the underground petrol tank of petrol station and oil depot is the variation that has certain environment temperature, the variation of this temperature can make the pressure of probe inside also constantly change thereupon, and the utility model is a kind of probe with pressure-keeping mechanism, it can well avoid pressure to change the impact on measuring accuracy.
As 1 and Fig. 2 shown in, the utility model is achieved like this, it comprises probe main body 2 and is connected to probe head 1, oil float 3 and the water float 4 in probe main body 2 in turn, in probe main body 2, be also provided with waveguide filament 10, described probe head 1 two ends connect respectively end cap 6 and bottom 9, the outer wall of probe head 1 is the mobile outer cover 8 that can be subjected to displacement with pressure change, is provided with the fixed head 7 for fixing circuit board in probe head 1.
The two ends of described probe head 1 are connected with bottom 9 with end cap 6 by helicitic texture respectively, and described probe head 1 is equipped with the O type circle 5 for sealing with end cap 6 and bottom 9 contact positions.
As shown in Figure 3, the two ends of described mobile outer cover 8 are movably connected in respectively on the lateral wall of end cap 6 and bottom 9; Described end cap 6 and bottom 9 all have the three-jaw handle 11 for rotation is installed.
Principle of work of the present utility model is such, the mobile outer cover 8 that the utility model adopts, and its two ends are not the traditional pattern being fixed completely with the annexation of end cap and bottom respectively, but can displacement.According to the Clapyron Equation in physics, PV=(m/M) RT learns, in the time of temperature variation, only has that to realize pressure constant by changing volume.And the application of this physical principle just of this pressure-keeping mechanism.Raise as example taking oil tank internal temperature, when oil tank internal temperature raises, first can make the pressure of probe inner space increase, after pressure increases to certain numerical value, the mobile outer cover 8 of probe head 1 will be pushed, probe inner space will be increased, and along with the volume of probe inner space increases, thereby original internal pressure increasing will be released and is reduced to original stress level.Thereby realize, the pressure stability of probe inside, eliminates the impact of pressure on inner waveguide filament then.In the time that oil tank temperature reduces, its principle is the same, and now mobile outer cover 8 inwardly shrinks mobile.
Claims (4)
1. the tank gage probe with pressure-keeping mechanism, it comprises probe main body and is connected to probe head, oil float and the water float in probe main body in turn, in probe main body, be also provided with waveguide filament, it is characterized in that, described probe head two ends are link lid and bottom lid respectively, the outer wall of probe head is the mobile outer cover that can be subjected to displacement with pressure change, is provided with the fixed head for fixing circuit board in probe head.
2. the tank gage probe with pressure-keeping mechanism as claimed in claim 1, is characterized in that, the two ends of described probe head are connected with bottom with end cap by helicitic texture respectively, and described probe head and end cap and bottom contact position are equipped with the O type circle for sealing.
3. the tank gage probe with pressure-keeping mechanism as claimed in claim 1, is characterized in that, the two ends of described mobile outer cover are movably connected in respectively on end cap and bottom lateral wall.
4. the tank gage probe with pressure-keeping mechanism as claimed in claim 1, is characterized in that, described end cap and bottom all have the three-jaw handle for rotation is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420231082.6U CN203758580U (en) | 2014-05-07 | 2014-05-07 | Liquid level instrument probing bar with pressure-keeping mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420231082.6U CN203758580U (en) | 2014-05-07 | 2014-05-07 | Liquid level instrument probing bar with pressure-keeping mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203758580U true CN203758580U (en) | 2014-08-06 |
Family
ID=51253836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420231082.6U Expired - Lifetime CN203758580U (en) | 2014-05-07 | 2014-05-07 | Liquid level instrument probing bar with pressure-keeping mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203758580U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108955816A (en) * | 2018-09-28 | 2018-12-07 | 优必得石油设备(苏州)有限公司 | A kind of pulling force stabilising arrangement on probe waveguide filament |
-
2014
- 2014-05-07 CN CN201420231082.6U patent/CN203758580U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108955816A (en) * | 2018-09-28 | 2018-12-07 | 优必得石油设备(苏州)有限公司 | A kind of pulling force stabilising arrangement on probe waveguide filament |
| CN108955816B (en) * | 2018-09-28 | 2024-05-14 | 优必得石油设备(苏州)有限公司 | Tension stabilizing device for probe waveguide wire |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140806 |