CN103808456A - Decomposing device for calibrated suite of underwater pressure sensor - Google Patents
Decomposing device for calibrated suite of underwater pressure sensor Download PDFInfo
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- CN103808456A CN103808456A CN201310602953.0A CN201310602953A CN103808456A CN 103808456 A CN103808456 A CN 103808456A CN 201310602953 A CN201310602953 A CN 201310602953A CN 103808456 A CN103808456 A CN 103808456A
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Abstract
The invention relates to a device capable of decomposing the calibrated suite of a W138A type underwater pressure sensor produced by the PCB company; the device is composed of an outer hexagon extrusion nut, a double semi-ring extrusion support pad, an internal round liner and an outer hexagon barrel, and all components are made of brass. The device is characterized in that the measuring cable end of the underwater pressure sensor with an undecomposed seal ring penetrates through a measuring cable channel hole of the outer barrel along the threaded end of the outer hexagon barrel. The groove part of the double semi-ring extrusion support pad is matched with the end face of the seal head of the sensor at the tourmaline sensitive element end of the sensor. The double semi-ring internal round liner wraps the seal ring and the double semi-ring extrusion support pad, and is placed into the hollow interior of the outer hexagon barrel. The outer hexagon extrusion nut passes through the tourmaline sensitive element end of the sensor, and is screwed into the outer hexagon barrel. Through the axial movement of the hexagon nut, the double semi-ring extrusion support pad is forced to extrude the end face of the seal head of the sensor, the sensor moves axially under stress, and then the sensor and the seal ring move relatively along the axial direction, and thus the decomposition of the sensor is achieved. The device has the advantage that the calibrated W138A type underwater pressure sensor can be smoothly decomposed from the seal ring without damaging the sensor.
Description
Technical field
The present invention relates to a kind of pressure sensor calibrating external member decomposer, especially can complete the decomposer after shock wave free field pressure transducer quasistatic calibration under the W138 Series of Water that PCB company of the U.S. produces.
Background technology
The accurate test of underwater blast wave transformation period course produces crucial impact to the assessment of blast impulse wave energy and bubble energy.The pressure sensitivity of explosion pressure sensor is its main technical indicator.Therefore, the calibration of pressure sensitivity is had to important practical significance.
The sensitivity calibration of pressure transducer divides static calibration method and dynamic calibration method [new technology new instrument, 2009,29 (4): 24-26].Static calibration method can not produce sinusoidal pressure pulsating wave.Dynamic calibration method has sinusoidal pressure signal input method and transient pressure signal input method.But sinusoidal pressure signal input method can only produce pressure signal less and low frequency, reach far away the pressure amplitude of the required hundreds of MPas of underwater blast pressure transducer.The conventional shock tube method Main Basis of transient pressure input method be high-speed aerodynamics.Therefore, these two kinds of dynamic calibration methods are not all suitable for the calibration [pressure measurement technology and instrument, China Machine Press, 2005. aerospace instrumentation technology, 2011,31 (6): 15-20] of underwater blast measurement sensor.
Adopt quasi-static method can realize underwater blast and measure the measurement range with pressure transducer, producible transient pressure near sinusoidal ripple.Its principle is to impact the liquid being equipped with in chamber by dropping hammer, the liquid that is hit produces the sinusoidal pressure pulse of Millisecond, in liquid same plane, put into standard transducer and by school sensor, because pressure in same level equates, adopt relative method can obtain by the pressure sensitivity of school sensor.
The tourmaline that under the W138 Series of Water that PCB company of the U.S. produces, Shock Wave Sensors can produce piezoelectric effect is placed in the plastic pipe that fills with silicone oil, and moisture resistance is good, there is no directivity, harsh conditions to the quick-fried heart just while having avoided other sensor test.Meanwhile, the sensitive element of this sensor can be transformed into high resistant signal low-resistance signal.Low-resistance signal can, through cable transmission compared with producing at a distance and not signal attenuation, can be eliminated the interference that cable effect causes, because of but the pressure test sensor of underwater blast widespread use.The 1 year left and right time of the every mistake of this series sensor all needs sensitivity to calibrate, to guarantee the accuracy of measurement result.Because shock wave free field pressure range under W138 Series of Water is larger, reach hundreds of MPas, this just requires metering outfit can produce the dynamic pressure of hundreds of MPas.
The BLG09 pressure sensor calibrating apparatus of Beijing Institute of Technology's development can be realized the pressure calibration of 800 MPas, is domestic state-of-the-art underwater blast pressure transducer quasistatic calibrating installation.When being calibrated, pressure transducer needs first sensor installation: first locating sleeve is screwed in the installation of sensors hole of high voltage pulse chamber, to together be inserted in locating sleeve by the two semi-ring supporting pads of school Underwater Pressure sensor overcoat and sealing ring again, then screw in holding nut, the two semi-ring supporting pads of the extruding of being combined with the screw thread of locating sleeve by holding nut and sealing ring are realized the fixing seal of pressure transducer, and the sensitive element of sensor gos deep in silicone oil.Reference sensor inserts in high-voltage pulse chamber at the conplane other end.Reference sensor is cylindrical, installs to decompose to be all easier to realize.But after repeatedly shock calibration is tested, be repeatedly subject to impacting with high pressure can produce slight plastic yield by the sealing ring of school sensor overcoat, the interference fit state of formation and Underwater Pressure sensor, causes cannot normally decompose by school sensor.
Summary of the invention
In order to decompose smoothly interference fit state Underwater Pressure sensor and sealing ring, the object of the invention is to provide a kind of PCB W138A of company Series of Water lower pressure sensor to demarcate external member decomposer.
The technical solution adopted in the present invention, is characterized in that: this device is made up of four parts.Respectively outer six side's extruding nuts, two semi-ring extruding supporting pad, inner circle lining, six side's urceolus.Wherein, two semi-ring extruding supporting pads are installed in inner circle lining, and its groove part coordinates with sensor seal head end face, and two semi-ring inner circle linings are put into six side's urceolus, the screw-internal thread fit of outer six side's extruding nuts and six side's urceolus, does axially-movable by screw thread rotation.
Six side's urceolus of the present invention, is characterized in that: its outside surface is hexagonal prism shape, are convenient on jig fixing.Inside, upper end is a closely-pitched internal thread, for coordinating with outer six side's extruding nuts, makes outer six side's extruding nuts push the axially-movable of two semi-ring extruding supporting pad by screw thread rotation.Urceolus boring cylinder is used for laying two semi-ring inner circle linings.The measurement cable passage hole that urceolus lower end cylindrical hole is connecting sensor.
Of the present invention pair of semi-ring inner circle lining, is characterized in that: it is outside for cylindrical, for coordinating with six side's urceolus are inner.Interior cylindrical is hollow for laying sealing ring and two semi-ring extruding supporting pad.Lower cylindrical hole is sensor passage hole.
Of the present invention pair of semi-ring extruding supporting pad, is characterized in that: its outside surface is cylindrical, for coordinating with two semi-ring inner circle linings.Circular groove coordinates with sensor seal head end face.Boring cylindrical hole is the electric stone sensitive element of sensor access opening.
Outer six side's extruding nuts of the present invention, is characterized in that: its outside lower end is hexagon, for fixing with jig.The closely-pitched external thread of nut is used for the screw-internal thread fit with six side's urceolus, does axially-movable by screw thread rotation.The circular cylindrical projection of upper end is used from two semi-ring extruding supporting pads and coordinates, the two semi-ring extruding of extruding supporting pad.The hollow cylinder hole of running through nut inside is the electric stone sensitive element of sensor access opening.
Decomposer of the present invention, is characterized in that: each part all adopts brass material, to avoid decomposable process to cause sensor impaired.
The invention has the beneficial effects as follows, can make the W138A type Underwater Pressure sensor after calibration decompose smoothly from sealing ring, and avoid sensor to cause damage.
Accompanying drawing explanation
Fig. 1 is the schematic diagram in calibrating installation by school installation of sensors;
Fig. 2 was schemed by school sensor and coordinating of sealing ring;
Fig. 3 is assembling schematic diagram of the present invention;
Fig. 4 is six side's urceolus part drawings;
Fig. 5 is two semi-ring inner circle lining part drawings;
Fig. 6 is two semi-ring extruding supporting pads;
Fig. 7 is outer six side's extruding nuts;
Fig. 8 is Underwater Pressure transducer calibration suite of devices decomposer fundamental diagram.
In figure: 1. outer six side's extruding nuts, 2. pair semi-ring extruding supporting pad, 3. pair semi-ring inner circle lining, 4. six side's urceolus, 5. pressure transducer, 6. holding nut, 7. pair semi-ring supporting pad, 8. sealing ring, 9. locating sleeve, 10. high voltage pulse chamber, 11. tourmaline elements, 12. O-ring seals, 13. O-ring seals, 14. O-ring seals.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
Embodiment 1
Composition and the annexation of Underwater Pressure transducer calibration external member decomposer.In Fig. 3, Underwater Pressure transducer calibration external member decomposer of the present invention, comprises outer six side's extruding nuts (1), two semi-ring extruding supporting pad (2), two semi-ring inner circle linings (3), six side's urceolus (4).Its annexation is: two semi-ring extruding supporting pads (2) are installed in inner circle lining (3), its groove part coordinates with sensor seal head end face, two semi-ring inner circle linings (3) are put into six side's urceolus (4), the screw-internal thread fit of outer six side's extruding nuts (1) and six side's urceolus (4), does axially-movable by screw thread rotation.
Architectural feature and the annexation of six side's urceolus (4) in Underwater Pressure transducer calibration external member decomposer.The outside surface of six side's urceolus (4) is hexagonal prism shape, is convenient on jig fixing.Inside, upper end is a closely-pitched internal thread, for coordinating (1) with outer six side's extruding nuts, makes outer six side's extruding nuts (1) push the axially-movable of two semi-ring extruding supporting pad (2) by screw thread rotation.Six side's urceolus (4) boring cylinders are used for laying two semi-ring inner circle linings (3).The measurement cable passage hole that six side's urceolus (4) lower end cylindrical holes are connecting sensor.
Embodiment 3
Architectural feature and the annexation of two semi-ring inner circle linings (3) in Underwater Pressure transducer calibration external member decomposer.Two semi-ring inner circle linings (3) outside is cylindrical, for coordinating with six side's urceolus (4) are inner.Interior cylindrical is hollow for laying sealing ring (8) and two semi-ring extruding supporting pad (2).Lower cylindrical hole is sensor (5) access opening.
Embodiment 4
Architectural feature and the annexation of two semi-ring extruding supporting pads (2) in Underwater Pressure transducer calibration external member decomposer.Two semi-ring extruding supporting pad (2) outside surfaces are cylindrical, for coordinating with two semi-ring inner circle linings (3).Circular groove coordinates with sensor seal head end face.Boring cylindrical hole is the electric stone sensitive element of sensor (11) access opening.
Embodiment 5
Architectural feature and the annexation of Underwater Pressure transducer calibration external member decomposer China and foreign countries six side's extruding nuts (1).The outer six outside lower ends of side's extruding nut are hexagon, for fixing with jig.The closely-pitched external thread of nut is used for the screw-internal thread fit with six side's urceolus (4), does axially-movable by screw thread rotation.The circular cylindrical projection of upper end is used from two semi-ring extruding supporting pads (2) and coordinates, the two semi-ring extruding supporting pads of extruding (2).The hollow cylinder hole of running through nut inside is the electric stone sensitive element of sensor (11) access opening.
Embodiment 6
Underwater Pressure transducer calibration external member decomposer material.The each part of decomposer all adopts brass material, to avoid decomposable process to cause sensor impaired.
Embodiment 7
The application process of Underwater Pressure transducer calibration external member decomposer.In Fig. 8, in the time using Underwater Pressure transducer calibration external member decomposer of the present invention to decompose the sealing ring (8) on sensor, first that six side's urceolus (4) are fixing on jig, then will pass with the measurement cut cable of the Underwater Pressure sensor (5) of undecomposed sealing ring (8) the measurement cable passage hole of six side's urceolus along the thread end of six side's urceolus (4).At the electric stone sensitive element of sensor end (11), the groove part of two semi-ring extruding supporting pads (2) is coordinated with sensor seal head end face.By two semi-ring inner circle linings (3) environmental sealing rings (8) and two semi-ring extruding supporting pad (2) and axially put into the boring of six side's urceolus (4).Outer six side's extruding nuts (1), through the electric stone sensitive element of sensor end (11), are screwed in to six side's urceolus (4).By the axially-movable of outer six side's extruding nuts (1), two semi-ring extruding supporting pad (2) stressed pressing sensing device seal head end faces (11), the stressed generation axially-movable of sensor (5) trend, owing to being moved by two semi-ring inner circle lining (3) restrictive axial with the sealing ring (8) of sensor (5) interference fit, cause sensor (5) and sealing ring (8) to produce vertically relative motion.Because sensor (5) part coordinating with sealing ring (8) has the less conical surface, the sensor (5) of generation relative motion is freed the interference fit with sealing ring (8), realizes the decomposition of sensor (5).Because two semi-ring extruding supporting pads (2) are brass material, density is softer, can not cause the plastic yield of sensor (5) seal head end face.
Claims (8)
1. a Underwater Pressure transducer calibration external member decomposer, is made up of outer six side's extruding nuts (1), two semi-ring extruding supporting pad (2), two semi-ring inner circle linings (3), six side's urceolus (4); In the W138A type water that PCB company calibration is rear and sealing ring interference fit produces, pressure transducer moves sealing ring and sensor by decomposer to axial, realizes and decomposing.
2. Underwater Pressure transducer calibration external member decomposer according to claim 1, it is characterized in that: adopt two semi-ring inner circle linings (3) to wrap up the sealing ring of pressure transducer in the W138A type water that is combined with the production of PCB company, and limit its relative motion; Two semi-ring inner circle linings (3) are put into and are with female six side's urceolus (4), produce relative motion by outer six side's extruding nut (1) axially-movable pressing sensing devices and sealing ring, realize the decomposition of sensor.
3. Underwater Pressure transducer calibration external member decomposer according to claim 1, its annexation is: two semi-ring extruding supporting pads are installed (2) in two semi-ring inner circle linings (3), its groove part coordinates with sensor seal head end face, two semi-ring inner circle linings (3) are put into six side's urceolus (4), the screw-internal thread fit of outer six side's extruding nuts (1) and six side's urceolus (4), does axially-movable by screw thread rotation.
4. six side's urceolus (4) of Underwater Pressure transducer calibration external member decomposer according to claim 1, is characterized in that: its outside surface is hexagonal prism shape, are convenient on jig fixing; Inside, upper end is a closely-pitched internal thread, for coordinating with outer six side's extruding nuts (1), makes outer six side's extruding nuts (1) push the axially-movable of two semi-ring extruding supporting pad (2) by screw thread rotation; Urceolus boring cylinder is used for laying two semi-ring inner circle linings (3); Six side's urceolus (4) lower end cylindrical holes are the measurement cable passage hole of connecting sensor (5).
5. two semi-ring inner circle linings (3) of Underwater Pressure transducer calibration external member decomposer according to claim 1, is characterized in that: it is outside for cylindrical, for coordinating with six side's urceolus (4) are inner; Interior cylindrical is hollow for laying sealing ring (8) and two semi-ring extruding supporting pad (2); Lower cylindrical hole is sensor (5) access opening.
6. two semi-rings of Underwater Pressure transducer calibration external member decomposer push supporting pads (2) according to claim 1, it is characterized in that: its outside surface is cylindrical, for coordinating with two semi-ring inner circle linings (3); Circular groove coordinates with sensor seal head end face; Boring cylindrical hole is the electric stone sensitive element of sensor (11) access opening.
7. outer six sides of Underwater Pressure transducer calibration external member decomposer push nuts (1) according to claim 1, it is characterized in that: its outside lower end is hexagon, for fixing with jig; The closely-pitched external thread of nut is used for the screw-internal thread fit with six side's urceolus (4), does axially-movable by screw thread rotation; The circular cylindrical projection of upper end is used from two semi-ring extruding supporting pads (2) and coordinates, the two semi-ring extruding supporting pads of extruding (2); The hollow cylinder hole of running through nut inside is the electric stone sensitive element of sensor (11) access opening.
8. Underwater Pressure transducer calibration external member decomposer according to claim 1, this installs each part and all adopts brass material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310602953.0A CN103808456A (en) | 2013-11-25 | 2013-11-25 | Decomposing device for calibrated suite of underwater pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310602953.0A CN103808456A (en) | 2013-11-25 | 2013-11-25 | Decomposing device for calibrated suite of underwater pressure sensor |
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| CN103808456A true CN103808456A (en) | 2014-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310602953.0A Pending CN103808456A (en) | 2013-11-25 | 2013-11-25 | Decomposing device for calibrated suite of underwater pressure sensor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105319008A (en) * | 2014-06-06 | 2016-02-10 | 邵建军 | Push type apparatus for disengaging locating sleeve during calibration of sensor |
| CN105319007A (en) * | 2014-06-05 | 2016-02-10 | 邵建军 | Device for dissembling calibrated suite of spinning sensor |
| CN108663146A (en) * | 2018-08-07 | 2018-10-16 | 合肥云联电子科技有限公司 | A kind of protective device of the fiber bragg grating pressure sensor with temperature-compensating |
| CN111664969A (en) * | 2019-03-09 | 2020-09-15 | 扬州科动电子有限责任公司 | Underwater free field pressure sensor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2006103651A2 (en) * | 2005-03-29 | 2006-10-05 | Hanita Metal Works Ltd. | Shrink fit tool holder |
| CN201082532Y (en) * | 2007-07-20 | 2008-07-09 | 宝山钢铁股份有限公司 | Shaft sleeve detaching device |
| CN201856073U (en) * | 2010-08-31 | 2011-06-08 | 中国北车集团大连机车研究所有限公司 | Detaching device of interference-fit combined piston of locomotive diesel engine |
| CN202846482U (en) * | 2012-11-13 | 2013-04-03 | 湘潭电机股份有限公司 | Dismounting device for interference sleeve |
-
2013
- 2013-11-25 CN CN201310602953.0A patent/CN103808456A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006103651A2 (en) * | 2005-03-29 | 2006-10-05 | Hanita Metal Works Ltd. | Shrink fit tool holder |
| CN201082532Y (en) * | 2007-07-20 | 2008-07-09 | 宝山钢铁股份有限公司 | Shaft sleeve detaching device |
| CN201856073U (en) * | 2010-08-31 | 2011-06-08 | 中国北车集团大连机车研究所有限公司 | Detaching device of interference-fit combined piston of locomotive diesel engine |
| CN202846482U (en) * | 2012-11-13 | 2013-04-03 | 湘潭电机股份有限公司 | Dismounting device for interference sleeve |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105319007A (en) * | 2014-06-05 | 2016-02-10 | 邵建军 | Device for dissembling calibrated suite of spinning sensor |
| CN105319008A (en) * | 2014-06-06 | 2016-02-10 | 邵建军 | Push type apparatus for disengaging locating sleeve during calibration of sensor |
| CN108663146A (en) * | 2018-08-07 | 2018-10-16 | 合肥云联电子科技有限公司 | A kind of protective device of the fiber bragg grating pressure sensor with temperature-compensating |
| CN108663146B (en) * | 2018-08-07 | 2023-11-21 | 合肥森岑汽车用品有限公司 | Protection device with temperature compensation for fiber grating pressure sensor |
| CN111664969A (en) * | 2019-03-09 | 2020-09-15 | 扬州科动电子有限责任公司 | Underwater free field pressure sensor |
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Application publication date: 20140521 |