CN208588318U - Axial position measuring instrument - Google Patents
Axial position measuring instrument Download PDFInfo
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- CN208588318U CN208588318U CN201821463079.1U CN201821463079U CN208588318U CN 208588318 U CN208588318 U CN 208588318U CN 201821463079 U CN201821463079 U CN 201821463079U CN 208588318 U CN208588318 U CN 208588318U
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- linear displacement
- displacement transducer
- hall
- stainless steel
- hall linear
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Abstract
The utility model provides a kind of axial position measuring instrument, and the present apparatus includes Hall Linear displacement transducer, permanent magnet, guidance pure iron, stainless steel isolation flange and transmitter；The permanent magnet for being fixed on pump drive shaft bottom end passes through stainless steel isolation flange and guidance pure iron and Hall Linear displacement transducer forms magnetic circuit；Hall Linear displacement transducer is electrically connected with transmitter by electric wire realization, Hall Linear displacement transducer shell one end and transmitter enclosure are realized by location nut to be bolted, the Hall Linear displacement transducer shell other end and stainless steel isolation flange are realized by fastening nut to be bolted, and stainless steel isolation flange both ends and the pump housing are realized by hex(agonal)screw and bolted.The technical solution of the utility model solves the problem of seal transmission shaft can not determine position, can not confirm sliding bearing abrasion amount in the prior art.
Description
Technical field
The measuring device being characterized the utility model relates to adopt by electric or magnetic means, specifically, more particularly to axial
Position measurement instrument.
Background technique
They determine at the condition of itself for petroleum, chemical field, and the raw material used is all high corrosion, toxic, inflammable, explosive
Liquid, the transmission of liquid charging stock must use the canned motor pump of transmission shaft hermetic type, the bearing of transmission shaft must using graphite or
Abrasion-resistant slide bearing made of silicon carbide；In the process of running, transmission shaft has free-running operation area to equipment, and along axial float；
Pump is in long-term operation, and due to the variation of flow, pump shaft follows flow to carry out axial float, and axle bumper ring causes the axial direction of bearing
End face edge abrasion, people can not know its abrasion loss in the case where no detecting instrument；It can wave using the method for periodic inspection
Take a large amount of human and material resources, if accident easily occurs not in time for maintenance.In view of this, design it is a kind of can be under high-risk operating condition
The abrasion condition of bearing is acquired and is handled in real time by work, the measuring device characterized by the method for electric or magnetic, and according to people
Preset sending alarm and shut down processing signal, the safe operation to process units, it appears increasingly important.
Summary of the invention
Position can not be determined according to airtightness transmission shaft set forth above, can not confirm that the technology of sliding bearing abrasion amount is asked
Topic, and a kind of axial position measuring instrument is provided.The method that the utility model mainly utilizes electromagnetic induction measures leakproofness transmission shaft
Axial displacement.
The technological means that the utility model uses is as follows:
A kind of axial position measuring instrument, comprising: Hall Linear displacement transducer, permanent magnet, guidance pure iron, stainless steel isolation
Flange and transmitter；The permanent magnet for being fixed on pump drive shaft bottom end passes through stainless steel isolation flange and the guidance pure iron
Magnetic circuit is formed with Hall Linear displacement transducer；The Hall Linear displacement transducer is electrically connected with transmitter；The linear position of Hall
Displacement sensor shell one end and transmitter enclosure are realized by location nut to be bolted, and the Hall Linear displacement transducer shell is another
One end and stainless steel isolation flange are realized by fastening nut to be bolted.Stainless steel isolation flange both ends and the pump housing pass through hexagonal
Screw realizes bolt.
Further, the transmitter includes capacitance-resistance filter, difference amplifier, magnetic induction key switch, DC/DC power supply
Converter, SOC single-chip microcontroller, LED display, V/I converter and I/V converter, wherein the Hall Linear displacement transducer is defeated
Voltage signal out successively passes through capacitance-resistance filter and difference amplifier；The switching signal of magnetic induction key switch setting with
Above-mentioned voltage signal is sent together to the SOC single-chip microcontroller, and SOC single-chip microcontroller carries out A/D conversion to the voltage signal, then passes through meter
Calculation machine is calculated and is linearized to the signal after conversion, and the first circuit-switched data of calculated result, which is sent to the LED display, to be shown, the
Two circuit-switched datas are sent to the V/I converter, are converted into 4~20mA current signal and are used for long-range monitoring.
Further, be provided on the LED display charactron, light beam and be mounted on display liner plate on 3 suddenly
You switch, and realize the operation to 3 Hall switch, input setting data by magnetic pen.
Further, the light beam is divided into amber light, red light and green light, the bright expression pump upper and lower limit alarm of amber light, the bright table of red light
Show to pump and shut down, green light indicates that pump operates normally, and pumps green light when operating normally and is lighted according to distance of reaction stepping.
Further, the guidance pure iron and Hall Linear displacement transducer are fixed on Hall by epoxy resin embedding adhesive
In Linear displacement transducer shell.
Compared with the prior art, the utility model has the advantage that
1, axial position measuring instrument provided by the utility model measures leakproofness transmission shaft using the method for electromagnetic induction
Axial displacement.
2, the present apparatus is low in cost, installation, easy maintenance, saves a large amount of operation cost for enterprise.
To sum up, the technical solution of the utility model solves in the prior art that seal transmission shaft can not determine position, can not
The problem of confirming sliding bearing abrasion amount.
The utility model can be to adopt the fields such as measuring device that by electric or magnetic means is characterized extensive based on the above reasons
It promotes.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is done simply to introduce, it should be apparent that, the accompanying drawings in the following description is
Some embodiments of the utility model, for those of ordinary skill in the art, in the premise of not making the creative labor property
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is utility model device structure chart.
Fig. 2 is utility model device workflow block diagram.
In figure: 1, the pump housing；2, pump drive shaft；3, sliding bearing；4, permanent magnet；5, stainless steel isolation flange；6, spiral shell is fastened
It is female；7, sensor outer housing；8, location nut；9, pure iron is guided；10, Hall Linear displacement transducer；11, epoxy resin encapsulated
Glue；12, transmitter；13, hex(agonal)screw.
Specific embodiment
It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can
To be combined with each other.The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is only the utility model a part of the embodiment, instead of all the embodiments.Below at least one example
The description only actually of property embodiment be it is illustrative, never as to the utility model and its application or any limit used
System.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without making creative work
The every other embodiment obtained, fall within the protection scope of the utility model.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the utility model.As used herein, unless the context clearly indicates otherwise, otherwise singular
Form be also intended to include plural form, additionally, it should be understood that, when in the present specification use term "comprising" and/or
When " comprising ", existing characteristics, step, operation, device, component and/or their combination are indicated.
Unless specifically stated otherwise, positioned opposite, the digital table of the component and step that otherwise illustrate in these embodiments
Up to the unlimited the scope of the utility model processed of formula and numerical value.Simultaneously, it should be clear that for ease of description, each shown in attached drawing
The size of a part is not to draw according to actual proportionate relationship.Skill known for person of ordinary skill in the relevant
Art, method and apparatus may be not discussed in detail, but in the appropriate case, and the technology, method and apparatus should be considered as awarding
Weigh part of specification.In shown here and discussion all examples, example should be construed as merely by appointing to occurrence
Property, not as limitation.Therefore, the other examples of exemplary embodiment can have different values.It should also be noted that similar
Label and letter similar terms are indicated in following attached drawing, therefore, once be defined in a certain Xiang Yi attached drawing, then with
In attached drawing afterwards do not need that it is further discussed.
In the description of the present invention, it should be understood that the noun of locality such as " front, rear, top, and bottom, left and right ", " laterally,
Vertically, vertically, it is horizontal " and " pushing up, bottom " etc. indicated by orientation or positional relationship be normally based on orientation or position shown in the drawings
Relationship is set, is merely for convenience of describing the present invention and simplifying the description, in the absence of explanation to the contrary, these nouns of locality
Do not indicate that and imply that signified device or element must have a particular orientation or be constructed and operated in a specific orientation, because
This should not be understood as the limitation to scope of protection of the utility model: the noun of locality " inside and outside " refers to the wheel relative to each component itself
Wide is inside and outside.
For ease of description, spatially relative term can be used herein, as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure
Except different direction in use or operation.For example, being described as if the device in attached drawing is squeezed " in other devices
It will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction "
Side " or " under its device or construction ".Thus, exemplary term " ... top " may include " ... top " and
" in ... lower section " two kinds of orientation.The device can also be positioned with other different modes and (is rotated by 90 ° or in other orientation), and
And respective explanations are made to the opposite description in space used herein above.
In addition, it should be noted that, limiting components using the words such as " first ", " second ", it is only for be convenient for
Corresponding components are distinguished, do not have Stated otherwise such as, there is no particular meanings for above-mentioned word, therefore should not be understood as to this
The limitation of utility model protection range.
Embodiment
As shown in Figure 1, the utility model provides a kind of axial position measuring instrument, including Hall Linear displacement transducer
10, permanent magnet 4, guidance pure iron 9, stainless steel isolation flange 5 and transmitter 12；It is fixed on the permanent magnet 4 of 2 bottom end of pump drive shaft
Magnetic circuit is formed across stainless steel isolation flange 5 and guidance pure iron 9 and Hall Linear displacement transducer 10；Hall linear displacement sensing
Device 10 is electrically connected with transmitter 12 by electric wire realization, and 7 one end of Hall Linear displacement transducer shell and 12 shell of transmitter are logical
It crosses location nut 8 and realizes that bolt, 7 other end of Hall Linear displacement transducer shell and stainless steel isolation flange 5 pass through fastening spiral shell
Mother 6 realizes that bolt, 5 both ends of stainless steel isolation flange and the pump housing 1 are realized by hex(agonal)screw 13 and bolts.Guide pure iron 9 and Hall
Linear displacement transducer 10 is fixed in Hall Linear displacement transducer shell 7 by epoxy resin embedding adhesive 11.Hall is linear
Displacement sensor 10 is the sensitive semiconductor devices of a kind of pair of magnetic field strength, using hall effect sensor part as axis made of core
It to position instrument, can be installed on the rear end cap of pump, the axial distance voltage signal of pump shaft is obtained according to magnetic induction principle to survey
Measure distance change.The voltage signal that Hall Linear displacement transducer 10 exports is proportional to measurement distance, due to Hall linear displacement
The output voltage signal of sensor only it is in a linear relationship with magnetic field strength, so using when must carry out linearization process first.
The present apparatus has two kinds of room temperature -40~100 DEG C, high temperature -40~150 DEG C, and mounting means is identical.The present apparatus is used primarily in canned motor pump
On, magnetic field strength is detected using linear hall element, the position of (not contact liq) measurement transmission shaft is isolated in a non-contact manner
It sets.
As shown in Fig. 2, transmitter 12 is turned by capacitance-resistance filter, difference amplifier, magnetic induction key switch, DC/DC power supply
Parallel operation, SOC single-chip microcontroller, LED display, V/I converter and I/V converter composition, are fixed on the permanent magnet of 2 bottom end of pump drive shaft
4 pass through stainless steel isolation flange 5 and guidance pure iron 9 and the formation magnetic circuit of Hall Linear displacement transducer 10；Pump is in the process of running
10 pump drive shaft 2 of Hall Linear displacement transducer carries out way moving along axial, and the magnetic field strength in pure iron 9 is guided to become therewith
Change, therefore, the induced voltage that Hall Linear displacement transducer 10 exports is also proportional to changes of magnetic field, Hall Linear displacement transducer
The voltage signal of 10 outputs successively passes through capacitance-resistance filter and difference amplifier；Magnetic induction key switch setting switching signal with
Above-mentioned voltage signal is sent together to the SOC single-chip microcontroller, and SOC single-chip microcontroller carries out A/D conversion to voltage signal, then passes through computer
Signal after conversion is calculated and linearized, the first circuit-switched data of calculated result, which is sent to LED display, to be shown, the second circuit-switched data
It send to V/I converter, is converted into 4~20mA current signal and is used for long-range monitoring.Charactron, light are provided on LED display
Column and 3 Hall switch being mounted on display liner plate realize that the operation to 3 Hall switch, input are set by magnetic pen
Fixed number is according to realization human-computer dialogue in turn.Light beam is divided into amber light, red light and green light, and the bright expression pump upper and lower limit of amber light is alarmed, and red light is bright
It indicates to pump and shut down, green light indicates that pump operates normally, and pumps green light when operating normally and is lighted according to distance of reaction stepping.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should
Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of
Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new
The range of each embodiment technical solution of type.
Claims (5)
1. a kind of axial position measuring instrument characterized by comprising Hall Linear displacement transducer, permanent magnet, guidance pure iron,
Stainless steel isolation flange and transmitter；The permanent magnet for being fixed on pump drive shaft bottom end passes through stainless steel isolation flange and institute
It states guidance pure iron and Hall Linear displacement transducer forms magnetic circuit；The Hall Linear displacement transducer is electrically connected with transmitter；
Hall Linear displacement transducer shell one end and transmitter enclosure are realized by location nut to be bolted, and the Hall linear displacement passes
The sensor shell other end and stainless steel isolation flange are realized by fastening nut to be bolted；Stainless steel isolation flange both ends and pump
Body is realized by hex(agonal)screw and is bolted.
2. axial position measuring instrument according to claim 1, which is characterized in that the transmitter include capacitance-resistance filter,
Difference amplifier, magnetic induction key switch, DC/DC power adapter, SOC single-chip microcontroller, LED display, V/I converter and I/V
Converter, wherein the voltage signal of Hall Linear displacement transducer output successively passes through capacitance-resistance filter and differential amplification
Device；The switching signal of the magnetic induction key switch setting is sent together with the voltage signal to the SOC single-chip microcontroller, and SOC is mono-
Piece machine carries out A/D conversion to the voltage signal, then the signal after conversion is calculated and linearized by computer, calculates
As a result the first circuit-switched data is sent to the LED display and is shown, the second circuit-switched data is sent to the V/I converter, is converted into 4~20mA
Current signal is used for long-range monitoring.
3. axial position measuring instrument according to claim 2, which is characterized in that be provided with number on the LED display
Pipe, light beam and 3 Hall switch being mounted on display liner plate realize the operation to 3 Hall switch by magnetic pen, defeated
Enter to set data.
4. axial position measuring instrument according to claim 3, which is characterized in that the light beam is divided into amber light, red light and green
Lamp, the bright expression pump upper and lower limit alarm of amber light, the bright expression pump of red light are shut down, and green light indicates that pump operates normally, and pumps normal fortune
The green light is lighted according to distance of reaction stepping when row.
5. axial position measuring instrument according to claim 1, which is characterized in that the guidance pure iron and Hall linear displacement
Sensor is fixed in Hall Linear displacement transducer shell by epoxy resin embedding adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821463079.1U CN208588318U (en) | 2018-09-05 | 2018-09-05 | Axial position measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821463079.1U CN208588318U (en) | 2018-09-05 | 2018-09-05 | Axial position measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208588318U true CN208588318U (en) | 2019-03-08 |
Family
ID=65545621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821463079.1U Active CN208588318U (en) | 2018-09-05 | 2018-09-05 | Axial position measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208588318U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110441059A (en) * | 2019-08-07 | 2019-11-12 | 东北大学秦皇岛分校 | A kind of bush(ing) bearing abrasion loss on-line measuring device |
| CN112461544A (en) * | 2020-11-17 | 2021-03-09 | 王允学 | Axial position detector |
-
2018
- 2018-09-05 CN CN201821463079.1U patent/CN208588318U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110441059A (en) * | 2019-08-07 | 2019-11-12 | 东北大学秦皇岛分校 | A kind of bush(ing) bearing abrasion loss on-line measuring device |
| CN112461544A (en) * | 2020-11-17 | 2021-03-09 | 王允学 | Axial position detector |
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