CN2088247U - Magnetic sensitive remote transmitting pressure gauge - Google Patents
Magnetic sensitive remote transmitting pressure gauge Download PDFInfo
- Publication number
- CN2088247U CN2088247U CN 90213539 CN90213539U CN2088247U CN 2088247 U CN2088247 U CN 2088247U CN 90213539 CN90213539 CN 90213539 CN 90213539 U CN90213539 U CN 90213539U CN 2088247 U CN2088247 U CN 2088247U
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- CN
- China
- Prior art keywords
- pressure
- remote transmitting
- magnetic sensitive
- sensitive remote
- tensimeter
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Abstract
The utility model relates to a magnetic sensitive remote transmitting pressure gauge, belonging to the technical field of the design and manufacture of the primary meter for measuring pressure. A magnetic resistance device with strong magnetism and an N-S linear magnet are adopted by the utility model to form a magnetic-sensing angular displacement sensor and respectively arranged between the revolving shaft of the bevel gear in the bourdon tube type pressure meter and an axial press plate to form a magnetic sensitive remote transmitting pressure meter which has the indication of the pointer and can generate pressure analogue signals with no contact synchronously. The analogue signal output by the meter and the value of the tested pressure are in direct proportion to match the related amplifier or the A/D interface of the computer. The utility model can carry out the remote or on-line measurement for various pressure systems, being especially suitable for the explosion-proof environment, such as chemical industries, oil fields and mines.
Description
The utility model is design and the manufacturing technology field that belongs to one time one instrument of pressure measurement.
Existing pointer teletransmission tensimeter, used sensor has slide resistor formula, differential transformer type; The generation of signal is a contact, inapplicablely uses on large amplitude high-frequency vibratory equipment.
The utility model is in order to overcome above-mentioned the deficiencies in the prior art, manufactures and designs a kind of magneto-dependent sensor of contactless, vibration resistance, is installed between the mechanical drive turning axle and pressing plate in the tensimeter, constitutes a kind of contactless magnetic sensitive remote transmitting tensimeter.
The manometric structure of magnetic sensitive remote transmitting of the present invention is as shown in Figure 1: 1-magnet steel body 2-mechanical drive shaft 3-cable skewer seat 4-lead-in wire 5-three end ferromagnetism mistor 6-connecting rod 7-gib screw 8-fixation clip 9-bourdon tube 10-gauge hand 11-dial plate 12-pipe joint 20-tensimeter bodies
The tensimeter body that the utility model is used, but specialized designs manufacturing, also available existing tensimeter transformation just with tensimeter mechanical drive axostylus axostyle lengthening, is protruded outside the fixation clip axis hole, as shown in Figure 4.Sensor element is pressed Fig. 2, Fig. 3 manufacturing respectively, with seccotine three end ferromagnetism mistors (5) are put down earlier and be bonded on the aluminium brackets (5 '), exchange severing in the middle of the magnet steel disk (1) again, form N-S magnetic field, and flat being bonded on the pallet (1 ') that plastic cement makes, behind the cementation, press accompanying drawing (5), be installed in respectively between stem extension (2 ') and the pressing plate (8) sensor element.Both guarantee not contact mutually on same shaft core line, and are fixing with screw (7); The pin of mistor (5) is connected with cable pole socket (3) by lead-in wire (4), constitutes the magnetic sensitive remote transmitting tensimeter.
The sensor that the teletransmission tensimeter is used is made up of three end ferromagnetism mistors and two semicircle magnet steel, the geometric figure of magnetosensitive device as shown in Figure 6, magnetic resistance R=r wherein
1+ r
2± △ ρ; Make r during manufacturing
1≌ r
2, △ ρ=ρ ∥+ρ ⊥;
Wherein: the resistivity when ρ ∥ represents mistor angle is zero at externally-applied magnetic field and between by its electric current changes maximum; Change in resistance minimum when ρ ⊥ is expressed as angle and is 90 °.This shows that the resistivity of three end ferromagnetism mistors is relevant with the electric current angle theta that flows through it with magnetic field, both:
ρ（θ）＝ρ⊥sin
2θ＋ρ∥cos
2θ
According to this relation, design and manufacture magneto-dependent sensor, be installed between the mechanical drive axostylus axostyle and pressing plate in the tensimeter, constitute the contactless teletransmission tensimeter of magnetosensitive.
The magnetic sensitive remote transmitting tensimeter has the on-line measurement force value, and the analog electrical signal that contactless generation simultaneously is directly proportional with force value is by the relevant secondary instrument of cable teletransmission.When tensimeter was installed on the equipment, bourdon tube was stressed and uphold, and drove by connecting rod and revolved the mobile θ angle of axle, and simultaneously, the variation that mistor produces the θ angle is responded to, synchronously as sensor 1,3 pin making alive V in the magnetic field on the axostylus axostyle
DThe time, then: the electric signal that the output of 2 pin is directly proportional with force value, its amplitude is: V V θ=(△ ρ cos2 θ)/(2(ρ ∥+ρ ⊥))
DThis shows that manometric simulating signal is contactless generation; Only relevant with the axostylus axostyle move angle, the electric pressure signal that is produced is stable, linearity height, and sensitivity, temperature coefficient is little, and is reliability and durability, is applicable on the violent oscillatory motion equipment to use.
By above description of drawings, both can implement this technology.Embodiment: with the Tianjin DY-150 of pressure Watch Factory pointer pressure, implement by above-mentioned manufacture method, the tensimeter of making and accompanying drawing 7 designed circuit are connected, at the base measuring pressure rig-testing, its measurement data as shown in Table 1, output characteristic curve is seen shown in the accompanying drawing 8.So, have certain practicality.
Table one (MPa)
Claims (3)
1, a kind of magnetic sensitive remote transmitting tensimeter is made up of Bourdon tube pressure gauge body (20), bourdon tube (9), connecting rod (6), mechanical drive axis mechanism (2), fixation clip (8) and magneto-dependent sensor; It is characterized in that designed magneto-dependent sensor, form by three end ferromagnetism mistors and two semicircle magnetic links.
2, by the described magnetic sensitive remote transmitting tensimeter of claim 1, it is characterized in that magneto-dependent sensor, be installed in the pointer pressure, on mechanical transmission mechanism (2) stem extension (2 ') and between the fixation clip (8).
3, by the described magnetic sensitive remote transmitting tensimeter of claim 1, it is characterized in that two semicircle magnet steel are flat is bonded on the pallet (1 '), pallet and stem extension closely cooperate, must not become flexible, three end ferromagnetism mistors are installed in above the magnet steel, be fixed on the pressing plate (8), both center correspondences are installed on the same shaft core line, do not contact the generation magnetoresistance mutually:
ρ（θ）＝ρ∥sin
2θ＋ρ⊥cos
2θ
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90213539 CN2088247U (en) | 1990-07-05 | 1990-07-05 | Magnetic sensitive remote transmitting pressure gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90213539 CN2088247U (en) | 1990-07-05 | 1990-07-05 | Magnetic sensitive remote transmitting pressure gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2088247U true CN2088247U (en) | 1991-11-06 |
Family
ID=4893002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90213539 Withdrawn CN2088247U (en) | 1990-07-05 | 1990-07-05 | Magnetic sensitive remote transmitting pressure gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2088247U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104132769A (en) * | 2013-10-31 | 2014-11-05 | 瑞安市东南仪表元件厂 | Hall gas pressure gauge |
| CN107515068A (en) * | 2017-09-28 | 2017-12-26 | 无锡市凯丰压力表有限公司 | Resistance-type distance-transmission pressure gauge |
| WO2018170952A1 (en) * | 2017-03-20 | 2018-09-27 | 李金权 | Novel oil hydraulic control valve device |
| CN109655196A (en) * | 2019-01-15 | 2019-04-19 | 安徽天康(集团)股份有限公司 | A kind of distance-transmission pressure gauge equipped with magneto-dependent sensor |
-
1990
- 1990-07-05 CN CN 90213539 patent/CN2088247U/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104132769A (en) * | 2013-10-31 | 2014-11-05 | 瑞安市东南仪表元件厂 | Hall gas pressure gauge |
| WO2018170952A1 (en) * | 2017-03-20 | 2018-09-27 | 李金权 | Novel oil hydraulic control valve device |
| CN107515068A (en) * | 2017-09-28 | 2017-12-26 | 无锡市凯丰压力表有限公司 | Resistance-type distance-transmission pressure gauge |
| CN109655196A (en) * | 2019-01-15 | 2019-04-19 | 安徽天康(集团)股份有限公司 | A kind of distance-transmission pressure gauge equipped with magneto-dependent sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |