CN203643074U - Radiation-resistant high temperature-resistant pressure sensor - Google Patents
Radiation-resistant high temperature-resistant pressure sensor Download PDFInfo
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- CN203643074U CN203643074U CN201320619835.6U CN201320619835U CN203643074U CN 203643074 U CN203643074 U CN 203643074U CN 201320619835 U CN201320619835 U CN 201320619835U CN 203643074 U CN203643074 U CN 203643074U
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- pressure sensor
- portable plate
- temperature
- high temperature
- radiation hardness
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Abstract
The utility model discloses a radiation-resistant high temperature-resistant pressure sensor, which is a key special device of a nuclear reactor power supply, and is used for measuring liquid metal and gas having a high temperature of 600DEG C in the nuclear reaction system. The pressure sensor is mainly constituted by a first stage pressure-displacement transduction mechanism and a second stage bridge-type differential inductance transducer. The pressure-displacement transduction mechanism can be used to convert the high temperature fluid pressure into a thrust force, which can be used to push the magnetic materials to generate the displacement capable of causing the change of the coil inductance value. The bridge-type differential inductance transducer can be used to detect the change of the inductance, and convert the inductance into the electric signals, which can be output. By adopting the precise mechanical structure, the reliable application in the high temperature and strong radiation environment, and other complicated environments can be realized, and the radiation-resistant high temperature-resistant pressure sensor has a great meaning for guaranteeing the future nuclear technology development of our country.
Description
Technical field
The utility model relates to nuclear reactor power-supply system pressure parameter fields of measurement, particularly a kind of radiation hardness high-temperature-resistance pressure sensor.
Background technology
Pressure survey in the environment such as high temperature intense radiation is one of emphasis, difficult point of observation and control technology.Pressure survey and control usually need to be carried out in the fields such as nuclear reaction in the environment such as high temperature intense radiation, and high performance radiation hardness is high temperature resistant, and miniature pressure cell is one of Primary Component in above-mentioned field.
At present, high-temp pressure sensor mainly contains alloy firm high-temp pressure sensor, diffuse si high-temp pressure sensor and SOI, SiC high-temp pressure sensor etc.Wherein, alloy firm high-temp pressure sensor output signal is less, simultaneously under hot environment, thereby produces the thermal stress of annex because flexible member exists thermal expansion, has affected the precision of alloy firm high-temp pressure sensor; Under diffuse si high-temp pressure sensor hot conditions, device property declines obviously, and while exceeding 125 ℃, the performance meeting severe exacerbation of sensor, so that lost efficacy, in the time of 600 ℃, larger current leakage can occur, and causes the extreme imbalance of signal processing system and circuit; The high-temp pressure sensor structure of preparing based on SOI, SiC material is small and exquisite, serviceability temperature can reach 300 ℃ or higher, with the obvious advantage in radiation, the environment such as corrosion-resistant, but the degenerate problem going between in SOI, SiC pressure transducer hot environment becomes the bottleneck of its hot environment application of restriction.Because power supply under hot environment is connected difficulty with wire, signal processing circuit is also difficult to normal work, and the use of conventional high-temp pressure sensor is extremely restricted.
Patent CN 1514219 provides a kind of Solid state pressure blocking type high tempperature resistance pressure sensor, has realized the more than 200 ℃ temperature survey of rugged surroundings, but is difficult to competent measuring media temperature up to 600 ℃ of requirements; Patent CN 102169036 provides a kind of high temperature (600 ℃) pressure survey Passive Wireless SAW Sensors, can work in 600 ℃ of high temperature, but LGS (LGS) is a kind of new material, the processing technology of surface acoustic wave (SAW) device based on this material and unlike conventional piezoelectric materials as maturations such as quartz, lithium niobates, therefore the making of device is difficult to reach completely designing requirement, cannot in the environment such as spacing high-temperature intense radiation, reliably use.Therefore the sensing technology that, research is applicable to reliability application in the environment such as high temperature intense radiation has important practical significance.
Summary of the invention
Technical problem to be solved in the utility model is, for prior art deficiency, a kind of radiation hardness high-temperature-resistance pressure sensor is provided, solve existing sensor and can not measure 600 ℃ of high temperature metal liquids in nuclear reaction system and the problem of gaseous tension, realize the reliability application of pressure transducer in the environment such as high temperature intense radiation.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of radiation hardness high-temperature-resistance pressure sensor, comprise shell, described shell one side is fixedly connected with screwed pipe joint, described shell opposite side is fixedly connected with pedestal, in described screwed pipe joint, be horizontally disposed with catheter pressure, described catheter pressure is connected with the portable plate that can move horizontally in described shell by piston; Described shell upper bottom surface inner side and bottom surface inner side respectively offer one for limiting the stopper slot of described portable plate shift length; In space between described portable plate and the close shell of described pedestal one side, be fixed with a horizontal corrugated tube, described corrugated tube overcoat has a bourdon tube, described bourdon tube one end is connected with described portable plate, and the described bourdon tube other end is connected with described shell madial wall; Described portable plate middle part is connected with a slide bar that is horizontally disposed with and extends in described pedestal inner chamber, and on described slide bar, cover has electromagnetic induction device.
As preferred version, described stopper slot width is 0～12mm, and stopper slot limits the shift length of portable plate, plays overvoltage protection effect.
As preferred version, described piston contacts with described portable plate top or bottom, prevents that portable plate from rotating (when piston contacts with portable plate middle part, because portable plate is circular, portable plate easily rotates).
As preferred version, described bourdon tube is connected with described portable plate by cushion block, and cushion block one side can be fixedly connected with portable plate, and bourdon tube one end can be fixedly connected with cushion block opposite side, make sealing better between portable plate and corrugated tube, shell, thereby promote better slide bar.
Described electromagnetic induction device comprises and is enclosed within on described slide bar and the magnetic conductor that can move horizontally, is enclosed within the coil magnetism-guiding hood on described non-magnet material pipe together with described slide bar, on described non-magnet material pipe, is wound with telefault.
Compared with prior art, the beneficial effect that the utility model has is: sensor bulk of the present utility model is little, precise structure, can be in the complex environments such as high temperature intense radiation reliable measurements pressure, not only there is very large application potential in high temperature pressure measurement field, and be specially adapted to the measurement of nuclear reactor power-supply system pressure parameter, significant for ensureing the development of Future in China nuclear technology.
Accompanying drawing explanation
Fig. 1 is the utility model one embodiment one-piece construction schematic diagram;
Fig. 2 is the utility model one embodiment pressure transducer pressure-displacement transformational structure schematic diagram;
Fig. 3 is the utility model one embodiment pressure transducer bridge-type difference induction converter structure schematic diagram.
Embodiment
As shown in Figure 1-Figure 3, the utility model one embodiment pressure transducer physical dimension is Φ 70mm × 160mm, is mainly made up of two parts: first order pressure-displacement converted mechanism and second level bridge-type difference induction converter.
First order pressure-displacement converted mechanism comprises shell 10, and shell 10 inside are vacuum, shell 10 1 sides are fixedly connected with pedestal 1, catheter pressure 3 in the screwed pipe joint 2 of shell 10 opposite sides is connected by piston 4 with portable plate 6, piston 4 is positioned at portable plate 6 eccentric positions (not on portable plate center), stopper slot 7 limits the shift length of portable plate 6, portable plate 6 is connected by cushion block 11 with bourdon tube 8, the other end of bourdon tube 8 is welded on shell madial wall, portable plate 6 is tightly connected with corrugated tube 9, bourdon tube 8 is enclosed within on corrugated tube 9, the other end of corrugated tube 9 is connected to shell madial wall, the middle part of portable plate 6 connects slide bar 5 and extends in pedestal 1 inner chamber of second level bridge-type difference induction converter.On slide bar 5, cover has magnetic conductor 12, magnetic conductor 12 is high permeability material or armature, the first non-magnet material pipe 13 with on the second non-magnet material pipe 19, be set with 2 solenoid type the first telefault 14 and the second telefaults 18 that parameter is identical, the first telefault 14 and the second telefault 18 skins are the first coil magnetism-guiding hood 20 and the second coil magnetism-guiding hood 15, and inductance converter outer cover 16 is encapsulated the first coil magnetism-guiding hood 20 and the second coil magnetism-guiding hood 15.
In the utility model, high temperature fluid amount of pressure is converted to thrust by pressure-displacement converted mechanism, and thrust promotes magnetic material generation displacement and causes that winding inductance quantity changes, then is detected the variation of inductance and be converted to electric signal output by bridge-type difference induction converter.Measuring media pressure is delivered to sensor internal by catheter pressure 3; portable plate 6 is formed to thrust; portable plate 6 is located by the piston 4 being attached thereto; piston 4 is positioned at portable plate 6 eccentric positions; prevent that portable plate 6 from rotating; stopper slot 7 limits the shift length of portable plate 6, plays overvoltage protection effect, groove width 12mm.Bourdon tube 8 materials are high temperature resistant stainless steel.The displacement linearity of portable plate 6 and displacement depend on the performance of bourdon tube 8.Portable plate 6 is tightly connected with corrugated tube 9, and the other end of corrugated tube 6 is connected to housing, and inside vacuumizes.6 pressure seal buffer actions of corrugated tube, the power that its identical decrement needs is much smaller than the required power of bourdon tube 8 (1/8～1/10), and therefore, pressure-displacement conversion performance of portable plate 6 depends primarily on the performance of bourdon tube 8.Slide bar 5 extends to the inside of rear class the first telefault 14 and the second telefault 18, portable plate 6 displacement band moving slide-bar 5 displacements.On slide bar 5, armature is housed, under pressure, slide bar 5 is with moving armature to move in aluminum pipe, aluminum pipe skin is set with 2 solenoid type the first telefault 14 and the second telefaults 18 that parameter is identical, the displacement of armature causes the variation of the first telefault 14 and the second telefault 18 inductance values, the variation of two telefault inductance values forms electric potential difference, and is converted into electric signal output.
Claims (9)
1. a radiation hardness high-temperature-resistance pressure sensor, comprise shell (10), described shell (10) one sides are fixedly connected with screwed pipe joint (2), described shell (10) opposite side is fixedly connected with pedestal (1), it is characterized in that, in described screwed pipe joint (2), be horizontally disposed with catheter pressure (3), described catheter pressure (3) is connected with the portable plate (6) that can move horizontally in described shell (10) by piston (4); Described shell (10) upper bottom surface inner side and bottom surface inner side respectively offer one for limiting the stopper slot (7) of described portable plate (6) shift length; In space between described portable plate (6) and the close shell (10) of described pedestal (1) one side, be fixed with a horizontal corrugated tube (9), described corrugated tube (9) overcoat has a bourdon tube (8), described bourdon tube (8) one end is connected with described portable plate (6), and described bourdon tube (8) other end is connected with described shell (10) madial wall; Described portable plate (6) middle part is connected with a slide bar (5) that is horizontally disposed with and extends in described pedestal (1) inner chamber, and the upper cover of described slide bar (5) has electromagnetic induction device.
2. radiation hardness high-temperature-resistance pressure sensor according to claim 1, is characterized in that, described stopper slot (7) width is 0～12mm.
3. radiation hardness high-temperature-resistance pressure sensor according to claim 2, is characterized in that, described stopper slot (7) width is 12mm.
4. radiation hardness high-temperature-resistance pressure sensor according to claim 1, is characterized in that, described piston (4) contacts with described portable plate (6) top or bottom.
5. radiation hardness high-temperature-resistance pressure sensor according to claim 1, is characterized in that, described bourdon tube (8) is connected with described portable plate (6) by cushion block (11).
6. radiation hardness high-temperature-resistance pressure sensor according to claim 1, it is characterized in that, described electromagnetic induction device comprises and is enclosed within the upper and magnetic conductor (12) that can move horizontally of described slide bar (5) together with described slide bar (5), is enclosed within the first coil magnetism-guiding hood (20) and the second coil magnetism-guiding hood (15) on the first non-magnet material pipe (13) and the second non-magnet material pipe (19), on described the first non-magnet material pipe (13) and the second non-magnet material pipe (19), is wound with respectively the first telefault (14) and the second telefault (18).
7. radiation hardness high-temperature-resistance pressure sensor according to claim 6, is characterized in that, described the first telefault (14) is identical with the second telefault (18) parameter, and described electromagnetic induction device overcoat has an inductance converter outer cover (16).
8. according to the radiation hardness high-temperature-resistance pressure sensor described in claim 6 or 7, it is characterized in that, described magnetic conductor (12) is armature.
9. according to the radiation hardness high-temperature-resistance pressure sensor described in claim 6 or 7, it is characterized in that, described the first non-magnet material pipe (13) and the second non-magnet material pipe (19) are aluminum pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320619835.6U CN203643074U (en) | 2013-10-09 | 2013-10-09 | Radiation-resistant high temperature-resistant pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320619835.6U CN203643074U (en) | 2013-10-09 | 2013-10-09 | Radiation-resistant high temperature-resistant pressure sensor |
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| Publication Number | Publication Date |
|---|---|
| CN203643074U true CN203643074U (en) | 2014-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320619835.6U Withdrawn - After Issue CN203643074U (en) | 2013-10-09 | 2013-10-09 | Radiation-resistant high temperature-resistant pressure sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103512697A (en) * | 2013-10-09 | 2014-01-15 | 中国电子科技集团公司第四十八研究所 | Radiation-resistant high-temperature-resistant pressure sensor |
-
2013
- 2013-10-09 CN CN201320619835.6U patent/CN203643074U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103512697A (en) * | 2013-10-09 | 2014-01-15 | 中国电子科技集团公司第四十八研究所 | Radiation-resistant high-temperature-resistant pressure sensor |
| CN103512697B (en) * | 2013-10-09 | 2016-03-09 | 中国电子科技集团公司第四十八研究所 | A kind of Radiation-resistant high-temperature-respressure pressure sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140611 Effective date of abandoning: 20160309 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |