CN105319003B - Measure the device and method of high pressure injector pressure - Google Patents
Measure the device and method of high pressure injector pressure Download PDFInfo
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- CN105319003B CN105319003B CN201510781186.3A CN201510781186A CN105319003B CN 105319003 B CN105319003 B CN 105319003B CN 201510781186 A CN201510781186 A CN 201510781186A CN 105319003 B CN105319003 B CN 105319003B
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Abstract
The invention discloses a kind of device and methods for measuring high pressure injector pressure comprising: bearing, the elastomer for accommodating bearing, fixed elastomer sensor accommodating portion, be fitted on the outside of elastomer foil gauge, be placed in the first circlip in elastomer and for blocking bearing, be placed in sensor accommodating portion and the second circlip for blocking elastomer to prevent it to be displaced outwardly and one end and bearing-transmission fit through the ball-screw module at elastomer center.Structure of the invention is compact, and using the direct method of measurement, precision is high, high reliablity.
Description
Technical field
The present invention relates to a kind of device and methods for measuring high pressure injector pressure.
Background technique
Existing high pressure injector pressure measurement method, mainly by installing pressure sensing on injection putter front end or wall
Device measures, but pressure sensor signal and electric power connection line can be moved as injection putter moves, since connecting line is past
Multiple movement, easily causes route to damage, reduces the safety of high pressure injector.It is by syringe body there are also certain methods
Fixation pressure sensor measures between syringe deck, and such method increases the overall dimensions of syringe, and be to pass through needle
Pulling force between cylinder deck and syringe body is converted to the thrust of push rod, decreases in precision, similar structures are detailed in China
Utility Model Publication No. is CN2717454Y patent.
Summary of the invention
In view of the foregoing, the invention aims to provide a kind of device and method for measuring high pressure injector pressure.
In order to achieve the above objectives, the first technical solution that the present invention uses is: a kind of dress measuring high pressure injector pressure
It sets comprising: bearing, the sensor accommodating portion for fixing elastomer, is fitted in answering on the outside of elastomer at the elastomer for accommodating bearing
Become piece, be placed in elastomer and the first circlip for blocking bearing, be placed in sensor accommodating portion and block elastomer to prevent
Only its second circlip being displaced outwardly and one end and bearing-transmission fit through the ball-screw module at elastomer center.
Further comprise following technical solution on the basis of the first technical solution:
The second jump-ring slot for accommodating the second circlip, protruding ring are provided in the sensor accommodating portion, for drawing foil gauge
First wire casing of wiring and with elastomer with merging the trimming limited block for preventing from circumferentially rotating.
The bearing is double-row angular contact bal bearing comprising inner ring and outer rings, wherein the height of inner ring is greater than outer ring
Height, the upper surface of inner ring is contacted with the E type circlip in ball screw module and inner ring rotates, outer ring with the rotation of screw rod
Upper surface and the first circlip cooperate and the lower end surface of outer ring and the bottom end of elastomer cooperate.
The abutting end upper surface of the elastomer and the second circlip cooperate, and lower end surface then cooperates with protruding ring, and abutting end
Side is equipped with the trimming limited block cooperation in trimming, with sensor accommodating portion, can fix elastomer, prevent it from circumferentially rotating,
The other side of abutting end is provided with the second wire casing；The first jump-ring slot, the upper surface of bottom end and the lower end of outer ring are provided with inside elastomer
Face cooperation, while elastomer bottom end is provided with through-hole, passes through inner ring and the end of ball screw module.
Ball screw module front end is push rod, and middle-end is feed screw nut, and rear end is screw end, wherein feed screw nut
The E type circlip moved backward for stop nut is equipped between screw end, E type circlip is resisted against the upper end of the inner ring of bearing
Face and the reaction force for applying push rod to bearing.
The second technical solution that the present invention uses is: a method of measurement high pressure injector pressure comprising following step
It is rapid:
Bearing: being first fitted into elastomer by S1, and the first circlip is placed in the first jump-ring slot in elastomer；
S2: then on the outside of the elastomer on stick multiple foil gauges, form an electric bridge, and thus measure the shape of elastomer
The thrust of change and screw rod；
S3: and then the assembled elastomer shell containing bearing is placed in sensor accommodating portion, in placement process,
By the trimming limited block cooperation in the trimming and sensor accommodating portion of the abutting end of elastomer, and the second circlip is placed in sensor
In second jump-ring slot of receiving portion；
S4: again by the E type circlip in the inner ring of the end insertion bearing of ball screw module, in ball screw mould group
Withstand the upper surface of the inner ring of bearing；
S5: in high pressure injector work, ball screw mould group will be rotated, and the inner ring of bearing can rotate together therewith；If
Ball screw travels forward, i.e., push rod pushes forward plunger, a pressure can be generated in syringe, while ball screw will receive one
A reaction force withstands the inner ring protrusion of bearing by the E type circlip in screw end, in axial direction, squeezes elastomer, makes
Generation deformation, i.e., by generate distortion measurement push rod thrust, so as to find out the pressure in high pressure injector syringe.
Due to the application of the above technical scheme, the present invention has the advantage that
Compact-sized, using the direct method of measurement, precision is high, high reliablity.
Detailed description of the invention
The invention will be further described with reference to the accompanying drawings and embodiments:
Fig. 1 is whole exploded view of the invention.
Fig. 2 is the cross-sectional view of sensor accommodating portion in the present invention.
Fig. 3 is the main view of middle (center) bearing of the present invention.
Fig. 4 is the cross-sectional view of elastomer of the present invention.
Fig. 5 is the overall diagram of elastomer of the present invention.
Fig. 6 is the structure chart of ball-screw module in the present invention.
Specific embodiment
Embodiment: as shown in figures 1 to 6, the present invention provides a kind of specific implementation of device for measuring high pressure injector pressure
Example comprising bearing 1, the sensor accommodating portion 3 for fixing elastomer 2, is fitted in outside elastomer 2 elastomer 2 for accommodating bearing 1
The foil gauge 4 of side is placed in the first circlip 5 in elastomer 2 and for blocking bearing 1, is placed in sensor accommodating portion 3 and blocks
Elastomer 2 fits through 2 center of elastomer with the second circlip 6 for preventing it to be displaced outwardly and one end and the transmission of bearing 1
Ball-screw module 7.
As shown in Fig. 2, sensor accommodating portion 3 is located on the rear end panel 31 of high pressure injector.Sensor accommodating portion 3 it is upper
End face 32 is higher than rear end panel 31.The second jump-ring slot 33 for accommodating the second circlip 6 is provided in sensor accommodating portion 3, for card
Firmly elastomer 2 prevents it to be displaced outwardly.Protruding ring, the upper surface 34 of protruding ring and elastomer 2 are equipped on the inside of sensor accommodating portion 3
Abutting end 21 lower end face contact, the limit for elastomer 2.Sensor accommodating portion 3 is equipped with the first wire casing 35, for drawing
The signal wire and power supply line of foil gauge 4 out.It is equipped with trimming limited block 36 in the middle part of sensor accommodating portion 3 simultaneously, is cooperated on elastomer 2
Trimming on abutting end can prevent elastomer 2 from circumferentially rotating.
As shown in figure 3, bearing 1 is preferably double-row angular contact bal bearing, biggish radial load can be born.Bearing 1
The height of inner ring 11 is greater than the height of outer ring 12, and the upper surface of bearing inner ring 11 connects with the E type circlip in ball screw module 7
Touching, inner ring 11 can be rotated with the rotation of screw rod.The upper surface 121 of outer ring 12 and the first circlip 5 cooperate, for limiting bearing 1
Axial movement.The lower end surface 122 of outer ring 12 and the bottom end 24 of elastomer 2 cooperate, and for holding bearing 1, prevent it from axially transporting
It is dynamic.
As illustrated in figures 4-5,2 external form of elastomer is in flowerpot shape.The upper surface of its abutting end 21 will cooperate with the second circlip 6,
Lower end surface will cooperate with the upper surface 34 of protruding ring.21 side of abutting end is equipped with trimming 26, for cooperating sensor accommodating portion 3
There are trimming limited block 36, can be fixed by elastomer 2, prevent it from circumferentially rotating.The other side of abutting end 21 is provided with the second line
Slot 27, for drawing the signal wire and power supply line of foil gauge 4.It is provided with the first jump-ring slot 22 inside elastomer 2, accommodates the first circlip
5, for limiting bearing 1 in 2 inner cavity 23 of elastomer.Match with the lower end surface 122 of outer ring 12 upper surface 24 of 2 bottom end of elastomer
It closes, while 2 bottom end of elastomer is provided with through-hole 25, and inner ring 11 and the end 74 of ball screw module 7 can be made to pass through.First jump-ring slot
22, through-hole 25 is connected with inner cavity 23.
As shown in fig. 6,7 front end of ball screw module is push rod 71, it is used to push and pull the plunger in syringe, middle-end is screw rod
Nut 72 is connect by screw thread with push rod 71.Nut bottom end is that E type circlip 73 moves backward for stop nut, is withstood simultaneously
The upper surface 111 of the inner ring 11 of bearing 1 applies the reaction force of push rod to bearing 1.Screw end 74 is rear end and passes through entire
Device.
When installation, first bearing 1 is fitted into elastomer 2, and the first circlip 5 is placed in the first jump-ring slot in elastomer 2
In 22, for blocking bearing 1, its axial movement is prevented.4 foil gauges 4 are sticked on the outside of the lower end of elastomer 2, are formed
One electric bridge, for measuring the deformation of elastomer 2 and the thrust of screw rod.The signal wire and power supply line edge elasticity of four foil gauges 4
The wire casing 27 of body 2 is placed.Then the elastomer shell 2 by assembled containing bearing 1 is placed in sensor accommodating portion 3, is put
During setting, by the trimming 26 of the abutting end of elastomer 2 in sensor accommodating portion 3 there are trimming limited block 36 cooperate, and
Second circlip 6 is placed in the second jump-ring slot 33 of sensor accommodating portion 3, for blocking elastomer 2, prevents its axial movement.
Finally by the inner ring 11 of the end insertion bearing 1 of ball screw module 7, the E type circlip in ball screw mould group 7 is withstood
The upper surface 111 of 1 inner ring 11 of bearing, so far whole device is installed.
In high pressure injector work, ball screw mould group 7 will be rotated, and the inner ring 11 of bearing 1 can rotate together therewith.If
Ball screw travels forward, i.e., push rod 71 pushes forward plunger, a pressure can be generated in syringe, while ball screw will receive
One reaction force withstands 11 protrusion of inner ring of bearing 1 by the E type circlip in screw end, in axial direction, squeezes elasticity
Body 2 is allowed to generate deformation, can be by the thrust of the distortion measurement push rod of generation, so as to find out in high pressure injector syringe
Pressure.
Thus on the basis of above-mentioned apparatus, the present invention further provides it is a kind of measure high pressure injector pressure method,
It includes following assembling steps early period:
Bearing 1: being first fitted into elastomer 2 by S1, and the first circlip 5 is placed in the first jump-ring slot 22 in elastomer 2,
For blocking bearing 1, its axial movement is prevented；
S2: 4 foil gauges 4 then are sticked on 2 outside of elastomer, an electric bridge are formed, for measuring the shape of elastomer 2
Become and the thrust of screw rod, the signal wire and power supply line of four foil gauges 4 are placed along the wire casing 27 of elastomer 2；
S3: and then the assembled elastomer shell 2 containing bearing 1 is placed in sensor accommodating portion 3, placement process
In, by the trimming 26 of the abutting end of elastomer 2 in sensor accommodating portion 3 there are trimming limited block 36 cooperate, and by second
Circlip 6 is placed in the second jump-ring slot 33 of sensor accommodating portion 3, for blocking elastomer 2, prevents its axial movement；
S4: again by the E in the inner ring 11 of the end insertion bearing 1 of ball screw module 7, in ball screw mould group 7
Type circlip withstands the upper surface 111 of 1 inner ring 11 of bearing；
S5: in high pressure injector work, ball screw mould group 7 will be rotated, and the inner ring 11 of bearing 1 can turn together therewith
It is dynamic；If ball screw travels forward, i.e., push rod 71 pushes forward plunger, and a pressure, while ball screw can be generated in syringe
It will receive a reaction force, 11 protrusion of inner ring of bearing 1 withstood by the E type circlip in screw end, in axial direction, squeeze
Compression elasticity body 2 is allowed to generate deformation, can be by the thrust of the distortion measurement push rod of generation, so as to find out high pressure injector needle
Pressure in cylinder.
Certainly the above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow be familiar with technique
People can understand the content of the present invention and implement it accordingly, it is not intended to limit the scope of the present invention.It is all according to this hair
The equivalent transformation or modification that the Spirit Essence of bright main technical schemes is done, should be covered by the protection scope of the present invention.
Claims (3)
1. a kind of device for measuring high pressure injector pressure, it is characterised in that comprising: bearing, the elastomer for accommodating bearing, solid
In determining the sensor accommodating portion of elastomer, the foil gauge being fitted on the outside of elastomer, being placed in elastomer and for blocking bearing
First circlip, be placed in sensor accommodating portion and the second circlip for blocking elastomer to prevent it to be displaced outwardly and one end with
Bearing-transmission fits through the ball-screw module at elastomer center, wherein being provided with receiving second in the sensor accommodating portion
Second jump-ring slot of circlip, protruding ring, the first wire casing for drawing foil gauge wiring and week is prevented with merging with elastomer
To the trimming limited block of rotation, the bearing is double-row angular contact bal bearing comprising inner ring and outer rings, the wherein height of inner ring
Be greater than the height of outer ring, the upper surface of inner ring contacted with the E type circlip in ball screw module and inner ring with screw rod rotation
And rotate, the upper surface of outer ring and the first circlip cooperate and the lower end surface of outer ring and the cooperation of the bottom end of elastomer, the elastomer
Abutting end upper surface and the second circlip cooperate, lower end surface then with protruding ring cooperate, and abutting end side be equipped with trimming, with sensing
Trimming limited block cooperation in device receiving portion, elastomer can be fixed, prevent it from circumferentially rotating, the other side of abutting end is provided with the
Two wire casings；The first jump-ring slot is provided with inside elastomer, the upper surface of bottom end and the lower end surface of outer ring cooperate, while elastomer bottom end
It is provided with through-hole, passes through inner ring and the end of ball screw module.
2. a kind of device for measuring high pressure injector pressure according to claim 1, it is characterised in that: the ball screw
Module front end is push rod, and middle-end is feed screw nut, and rear end is screw end, is wherein equipped with and uses between feed screw nut and screw end
In the E type circlip that stop nut moves backward, E type circlip is resisted against the upper surface of the inner ring of bearing and applies push rod to bearing
Reaction force.
3. a kind of method with device in claim 1, it is characterised in that it includes the following steps:
Bearing: being first fitted into elastomer by S1, and the first circlip is placed in the first jump-ring slot in elastomer；
S2: then on the outside of the elastomer on stick multiple foil gauges, form an electric bridge, and thus measure elastomer deformation and
The thrust of screw rod；
S3: and then the assembled elastomer shell containing bearing is placed in sensor accommodating portion, in placement process, by bullet
Property body abutting end trimming and sensor accommodating portion on the cooperation of trimming limited block, and the second circlip is placed in sensor pocket
In second jump-ring slot in portion；
S4: again by the inner ring of the end insertion bearing of ball screw module, the E type circlip in ball screw mould group is withstood
The upper surface of the inner ring of bearing；
S5: in high pressure injector work, ball screw mould group will be rotated, and the inner ring of bearing can rotate together therewith；If ball
Screw rod travels forward, i.e., push rod pushes forward plunger, a pressure can be generated in syringe, while ball screw will receive one instead
Active force withstands the inner ring protrusion of bearing by the E type circlip in screw end, in axial direction, squeezes elastomer, is allowed to produce
Raw deformation, i.e., by the thrust of the distortion measurement push rod generated, so as to find out the pressure in high pressure injector syringe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510781186.3A CN105319003B (en) | 2015-11-13 | 2015-11-13 | Measure the device and method of high pressure injector pressure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510781186.3A CN105319003B (en) | 2015-11-13 | 2015-11-13 | Measure the device and method of high pressure injector pressure |
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| CN105319003A CN105319003A (en) | 2016-02-10 |
| CN105319003B true CN105319003B (en) | 2019-06-28 |
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| CN201510781186.3A Active CN105319003B (en) | 2015-11-13 | 2015-11-13 | Measure the device and method of high pressure injector pressure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105928642B (en) * | 2016-04-23 | 2018-10-12 | 北京工业大学 | A kind of removable sleeve formula force snesor for supporting structure |
| US11648345B2 (en) * | 2017-02-08 | 2023-05-16 | Nemoto Kyorindo Co., Ltd. | Injection apparatus, actuator, and a manufacturing method of injection apparatus |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205192678U (en) * | 2015-11-13 | 2016-04-27 | 南京感控通化工产品经营部 | Measure device of high -pressure syringe pressure |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2717454Y (en) * | 2004-07-19 | 2005-08-17 | 深圳市东大精密仪器技术开发有限公司 | Medical high-pressure syringe |
| CN101470036B (en) * | 2007-12-28 | 2012-02-01 | 北京谊安医疗系统股份有限公司 | Block pressure detection and processing equipment and method for injection pump |
| CN201181249Y (en) * | 2008-02-25 | 2009-01-14 | 北京东方诚益通科技开发中心 | Pressure detection mechanism of injector pump |
| CN102008310B (en) * | 2009-09-08 | 2013-10-23 | 北京谊安医疗系统股份有限公司 | Pressure detector for injection pump |
| CN102114282A (en) * | 2009-12-31 | 2011-07-06 | 北京谊安医疗系统股份有限公司 | Mechanism for detecting blockage of syringe |
| JP5652865B2 (en) * | 2010-09-30 | 2015-01-14 | 学校法人神奈川大学 | High pressure generator and pressure measuring method thereof |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205192678U (en) * | 2015-11-13 | 2016-04-27 | 南京感控通化工产品经营部 | Measure device of high -pressure syringe pressure |
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Effective date of registration: 20210409 Address after: 210029 Block A, 8th Floor, 301 Hanzhongmen Street, Gulou District, Nanjing City, Jiangsu Province Patentee after: Nanjing Jusha Display Technology Co.,Ltd. Patentee after: NANJING JUSHA MEDICAL TECHNOLOGY Co.,Ltd. Address before: 210003 No.5, Hongmiao Lane 1, Fujian Road, Nanjing City, Jiangsu Province Patentee before: NANJING GANKONGTONG CHEMICAL PRODUCT OPERATION PORTION |