CN206387536U - A kind of pen type free filed pressure sensor calibrating apparatus - Google Patents
A kind of pen type free filed pressure sensor calibrating apparatus Download PDFInfo
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- CN206387536U CN206387536U CN201621269970.2U CN201621269970U CN206387536U CN 206387536 U CN206387536 U CN 206387536U CN 201621269970 U CN201621269970 U CN 201621269970U CN 206387536 U CN206387536 U CN 206387536U
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Abstract
A kind of pen type free filed pressure sensor calibrating apparatus disclosed in the utility model, described pen type free filed pressure sensor calibrating apparatus, including piston type pulse generator, standard pressure transducer, pick up calibration installation and sealing device, oil circuit connecting tube, power hammer；Described standard pressure transducer is installed on piston type pulse generator, with the oil pocket UNICOM of piston type pulse generator and perceiving oily cavity pressure；Described is fixed in pick up calibration installation and sealing device by school pen type free filed pressure sensor, annular seal space is formed on by the sensitive core body of school pen type free filed pressure sensor, and is connected by oil circuit connecting tube with the oil pocket of piston type pulse generator and is full of hydraulic oil；The calibrating installation that the utility model is announced is simple in construction, and compact is easy to operate, it is possible to resolve pen type free filed pressure sensor is difficult the problem of calibration in.
Description
Technical field
The utility model belongs to metrological testing technology field, more particularly to a kind of pen type free filed pressure sensor calibration
Device.
Background technology
The pressure size and sphere of action of explosion wave are to weigh the leading indicator of ammunition power, are that quantitative assessment is all kinds of
The important parameter that the brisance and calculating blast of weapon or the equipment that explodes release energy with combustion rate, shock wave pressure is weapon
The important content of test is needed in warhead development, blast damage effect research.In explosion wave effect test, shock wave
Test is generally divided into ground superpressure and the test of free field superpressure, and ground superpressure is tested by ground flat degree, soft durometer of earth's surface etc.
Factor influence is excessive, therefore is tested in experiment frequently with free field superpressure.When free field superpressure is tested, to reduce sensor to quilt
The influence of shock wave free field is surveyed, generally there is the pressure sensor of the bar type structure of streamline shape using head, because of sensing
Device profile is similar to the pencil after fining away, and is pen type free filed pressure sensor generally by the scales（Pencil free-
field transducer）.Such sensor is generally piezoelectric type principle, and the piezo-electric crystal sensitive core body of use is located at sensor
The middle front part of bar, because the pressure-sensitive face of piezo-electric crystal sensitive core body is a plane, the cylindrical rod of sensor also correspondingly edge
A plane is scabbled out on the length direction of bar, and the pressure-sensitive face of sensitive core body is flushed with the Plane Installation on the body of rod.
The special construction of pen type free filed pressure sensor brings difficulty to its calibration, therefore such sensor is typically
Reassembled after first sensitive core body is calibrated, but the characteristic such as sensitivity of sensor easily changes after assembling, and sensor is passed through
Cross that rear characteristic is used for multiple times whether to change is also user's concern.Another calibration side of pen type free filed pressure sensor
Method is calibrated using shock tube, but shock tube belongs to Large-scale professional equipment, and general unit is not equipped with the equipment, and this sets
Standby also to need supporting high pressure aerating and exhaust device, complex operation when using, sensor calibration processes are complicated.Therefore how quickly and easily
Pen type free filed pressure sensor is assembled and the characteristic such as sensitivity after to carry out calibration needed in free field pressure test
The problem of solving.
Utility model content
The purpose of this utility model is to provide a kind of pen type free filed pressure sensor calibrating apparatus, is pen type free filed pressure
Force snesor provides a kind of conveniently laboratory investment device.
The purpose of this utility model can adopt the following technical scheme that to realize：Described pen type free filed pressure sensor school
Standard apparatus, including piston type pulse generator, standard pressure transducer, pick up calibration installation and sealing device, oil circuit
Connecting tube, power hammer；Described standard pressure transducer is installed on piston type pulse generator, with piston type pulse
The oil pocket UNICOM of generator simultaneously perceives oily cavity pressure；Described is fixed on sensor school by school pen type free filed pressure sensor
In quasi- installation and sealing device, annular seal space is formed on by the sensitive core body of school pen type free filed pressure sensor, and pass through oil
Connecting pipe is connected with the oil pocket of piston type pulse generator and is full of hydraulic oil；Beaten by power and hit piston type pulse pressure
Piston rod on forcer produces pulse in its oil pocket, and pulse is through the hydraulic oil in oil pocket and oil circuit connecting tube
Act on standard pressure transducer simultaneously and by the pen type free filed pressure sensor of school, by standard of comparison pressure sensor and
The output responded by school pen type free filed pressure sensor to same pulse, is realized to the spirit of pen type free filed pressure sensor
The calibration of the technical indicators such as sensitivity.
Described piston type pulse generator includes being provided with cavity, piston on body, piston rod and termination, body
Bar is located in cavity, forms oil pocket after filling hydraulic oil in cavity, power hammering blow is acted on after piston rod upper end in oil pocket
Form pulse.
Described standard pressure transducer is installed on piston type pulse generator, standard pressure transducer sensitive area
With the oil pocket UNICOM of piston type pulse generator, for perceiving the pulse in oil pocket.
Described pick up calibration installation and sealing device include sensor firm banking, sealing ring, oil pressure sealing plate and
One circular hole, shape and size and the pen type free filed pressure in circular hole section are set in fixing screws, the sensor firm banking
Section at sensor sensing core body is consistent；One through hole is set in the middle part of the oil pressure sealing plate, and sets in upper end a nipple,
Lower end sets one for placing the groove with fixed seal ring, is passed through by school pen type free filed pressure sensor in firm banking
Circular hole so that the sensitive core body of corrected sensor is located at immediately below oil pressure sealing plate, and sealing ring is set between the two, by solid
Determining screw will be pressed abd fixed between sensor firm banking and oil pressure sealing plate by school pen type free filed pressure sensor, and then
Seal cavity is formed in the sensitive core body of corrected sensor.
Described oil circuit connecting tube two ends are threaded joint, and one end and the body of piston type pulse generator connect
Connect, communicated with the oil pocket in piston type pulse generator, the other end and pick up calibration installation and the oil pressure of sealing device
Sealing plate connect so that the oil pocket of piston type pulse generator with by the pen type free filed pressure sensor sensitive core body of school
Seal cavity UNICOM and full of hydraulic oil, make same by school pen type free filed pressure sensor and standard pressure transducer impression
Pulse.
Pen type free filed pressure sensor calibrating apparatus disclosed in the utility model, simple in construction, compact, operation letter
Just, easily realized in laboratory, a kind of simply and easily method provided for the calibration of pen type free filed pressure sensor,
The problem that pen type free filed pressure sensor is difficult calibration in can be solved.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is pen type free filed pressure sensor structure schematic diagram.
Fig. 3 is the A-A views in Fig. 2.
Fig. 4 is piston type pulse generator architecture schematic diagram.
Fig. 5 is pick up calibration installation and schematic diagram of sealing device.
In figure：1st, piston type pulse generator, 2, standard pressure transducer, 3, pick up calibration installs and sealing dress
Put, 4, pen type free filed pressure sensor, 5, oil circuit connecting tube, 6, power hammer, 7, hydraulic oil, 11, body, 12, piston rod, 13,
Termination, 31, sensor firm banking, 32, sealing ring, 33, oil pressure sealing plate, 34, fixing screws, 41, pen type free filed pressure
Sensor housing, 42, pen type free filed pressure sensor sensitive core body, 51, threaded connector.
Embodiment
Describe specific embodiment of the utility model in detail below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of pen type free filed pressure sensor calibrating apparatus disclosed in the utility model, including piston type
Pulse generator 1, standard pressure transducer 2, pick up calibration installation and sealing device 3, oil circuit connecting tube 5, power hammer 6.
As shown in Figure 2,3, pen type free filed pressure sensor 4 includes housing 41 and the two parts of sensitive core body 42.During calibration,
Pen type free filed pressure sensor 4 is fixed in pick up calibration installation and sealing device 3, pick up calibration is installed and sealed
Device 3 is connected by oil circuit connecting tube 5 with pulse generator 1.
As shown in figure 4, piston type pulse generator 1 includes body 11, piston rod 12 and termination 13, body 11 is with living
Set between stopper rod 12 and form oil pocket in cavity, cavity after filling hydraulic oil 7, the impact of power hammer 6 is acted on behind the top of piston rod 12
Pulse is formed in oil pocket.Standard pressure transducer 2 is installed on pulse generator 1, sensor sensing face and arteries and veins
The oil pocket connection of punching press forcer 1, for perceiving the pulse in oil pocket.
As shown in figure 5, pick up calibration installation and sealing device 3 include sensor firm banking 31, sealing ring 32, oil pressure
Sealing plate 33 and fixing screws 34.One circular hole, the shape and size and pen type in circular hole section are set in sensor firm banking 31
Section of the free-field blast pressure "pencil" sensor 4 at sensitive core body 42 is consistent.The middle part of oil pressure sealing plate 33 sets a through hole, and in upper end
If a nipple, lower end sets a groove, for placing and fixed seal ring 32.Worn by school pen type free filed pressure sensor 4
The circular hole crossed in sensor firm banking 31 so that the sensitive core body 42 of corrected sensor is located at immediately below oil pressure sealing plate 33,
And sealing ring 32 is set between the two, corrected sensor 4 is passed through into sensor firm banking 31 and oil pressure using fixing screws 34
Sealing plate 33 and sealing ring 32 are fixed, and then form seal cavity in the sensitive core body 42 of corrected sensor.
The described two ends of oil circuit connecting tube 5 are threaded joint, and one end is threaded connector 51 and piston type pulse
Generator 1 is connected, and the other end is connected with the oil pressure sealing plate 33 of pick up calibration installation and sealing device 3 so that piston type arteries and veins
The oil pocket of punching press forcer 1 connects with the seal cavity in corrected sensor sensitive core body 42 and is full of hydraulic oil, it is ensured that quilt
School pen type free filed pressure sensor 4 experiences same pulse with standard pressure transducer 2.
During calibration, the pulse that power hammer 6 hits the generation of piston rod upper end 13 acts on standard simultaneously by hydraulic oil 7
The sensitive area of sensor 2 and by the sensitive core body 42 of school pen type free filed pressure sensor 4, passes through standard of comparison pressure sensing
The output that device 2 and corrected sensor 4 are responded to same pulse, you can realize the spirit to pen type free filed pressure sensor 4
The calibration of the technical indicators such as sensitivity.
The non-detailed portion of the utility model is prior art.
Claims (5)
1. a kind of pen type free filed pressure sensor calibrating apparatus, it is characterized in that：Described pen type free filed pressure sensor school
Standard apparatus, including piston type pulse generator, standard pressure transducer, pick up calibration installation and sealing device, oil circuit
Connecting tube, power hammer；Described standard pressure transducer is installed on piston type pulse generator, with piston type pulse
The oil pocket UNICOM of generator simultaneously perceives oily cavity pressure；Pick up calibration is fixed on by school pen type free filed pressure sensor to install
And in sealing device, annular seal space is formed on by the sensitive core body of school pen type free filed pressure sensor, and connect by oil circuit
Pipe is connected with the oil pocket of piston type pulse generator and is full of hydraulic oil；Beaten by power and hit the generation of piston type pulse
Piston rod on device produces pulse in its oil pocket, and pulse is made simultaneously through the hydraulic oil in oil pocket and oil circuit connecting tube
With in standard pressure transducer and by the pen type free filed pressure sensor of school, by standard of comparison pressure sensor and by school pen
The output that formula free-field blast pressure "pencil" sensor is responded to same pulse, is realized to pen type free filed Sensitivity in Pressure Sensors etc.
The calibration of technical indicator.
2. pen type free filed pressure sensor calibrating apparatus according to claim 1, it is characterized in that：Described piston type arteries and veins
Punching press forcer includes being provided with cavity on body, piston rod and termination, body, and piston rod is located in cavity, filled in cavity
Fill out and oil pocket is formed after hydraulic oil, power hammering blow forms pulse after acting on piston rod upper end in oil pocket.
3. pen type free filed pressure sensor calibrating apparatus according to claim 1, it is characterized in that：Described normal pressure
It is used for oil pocket UNICOM of the sensitive area with piston type pulse generator for perceiving the pulse in oil pocket on sensor.
4. pen type free filed pressure sensor calibrating apparatus according to claim 1, it is characterized in that：Described sensor school
Standard is installed and sealing device includes sensor firm banking, sealing ring, oil pressure sealing plate and fixing screws, and the sensor is fixed
One circular hole, shape and size and the section one at pen type free filed pressure sensor sensitive core body in circular hole section are set in base
Cause；One through hole is set in the middle part of the oil pressure sealing plate, and a nipple is set in upper end, lower end sets one for placing and fixing
The groove of sealing ring, by school pen type free filed pressure sensor pass through firm banking in circular hole so that corrected sensor it is quick
Feel core body to be located at immediately below oil pressure sealing plate, and sealing ring is set between the two, will be by school pen type free filed by fixing screws
Pressure sensor is pressed abd fixed between sensor firm banking and oil pressure sealing plate, and then in the sensitive core body of corrected sensor
Upper formation seal cavity.
5. pen type free filed pressure sensor calibrating apparatus according to claim 1, it is characterized in that：Described oil circuit connection
Pipe two ends are threaded joint, and one end is connected with the body of piston type pulse generator, occur with piston type pulse
Oil pocket in device is communicated, and the other end is connected with the oil pressure sealing plate of pick up calibration installation and sealing device so that piston type arteries and veins
The oil pocket of punching press forcer with by the seal cavity UNICOM in the pen type free filed pressure sensor sensitive core body of school and full of liquid
Force feed, makes to experience same pulse by school pen type free filed pressure sensor and standard pressure transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621269970.2U CN206387536U (en) | 2016-11-25 | 2016-11-25 | A kind of pen type free filed pressure sensor calibrating apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621269970.2U CN206387536U (en) | 2016-11-25 | 2016-11-25 | A kind of pen type free filed pressure sensor calibrating apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206387536U true CN206387536U (en) | 2017-08-08 |
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ID=59486182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621269970.2U Active CN206387536U (en) | 2016-11-25 | 2016-11-25 | A kind of pen type free filed pressure sensor calibrating apparatus |
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| CN (1) | CN206387536U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106525331A (en) * | 2016-11-25 | 2017-03-22 | 中国人民解放军61489部队 | Pen type free field pressure sensor calibration device |
| WO2023111733A1 (en) * | 2021-12-16 | 2023-06-22 | The Secretary Of State For Defence | Blast pressure impulse gauge |
-
2016
- 2016-11-25 CN CN201621269970.2U patent/CN206387536U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106525331A (en) * | 2016-11-25 | 2017-03-22 | 中国人民解放军61489部队 | Pen type free field pressure sensor calibration device |
| CN106525331B (en) * | 2016-11-25 | 2022-09-30 | 中国人民解放军61489部队 | Pen type free field pressure sensor calibration device |
| WO2023111733A1 (en) * | 2021-12-16 | 2023-06-22 | The Secretary Of State For Defence | Blast pressure impulse gauge |
| GB2614961A (en) * | 2021-12-16 | 2023-07-26 | Secr Defence | Blast pressure impulse gauge |
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