CN207145375U - A kind of device for being used to measure Underwater Pressure compensator piston stroke - Google Patents
A kind of device for being used to measure Underwater Pressure compensator piston stroke Download PDFInfo
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- CN207145375U CN207145375U CN201720921867.XU CN201720921867U CN207145375U CN 207145375 U CN207145375 U CN 207145375U CN 201720921867 U CN201720921867 U CN 201720921867U CN 207145375 U CN207145375 U CN 207145375U
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Abstract
A kind of device for being used to measure Underwater Pressure compensator piston stroke, belongs to Underwater Pressure compensator technical field.Shell one end is blind end, the other end is opening end, piston ring set is mounted in enclosure interior, one end of piston is opening end, the other end is blind end, the blind end of the opening end corresponding housing of piston, the blind end of housing is provided with seawater access apertures, in housing piston gland is provided with the outside of the blind end of piston, diaphragm is provided between piston gland and piston, diaphragm extends always along housing inner circumferential side wall to be fixed in the annular groove that housing opening end face is provided with, threaded rod one end of guide rod sequentially passes through housing, piston, the centre bore of diaphragm and piston gland, nut has been screwed on the threaded rod of guide rod, a side end face upper groove of the piston gland towards the hydraulic pressure cargo tank, magnet steel is fixed in the groove of piston gland, magnet steel is made of permanent-magnet material, Hall element is set with magnet steel face.The utility model is used to measure Underwater Pressure compensator piston stroke.
Description
Technical field
A kind of device of piston stroke measurement is the utility model is related to, be particularly suitable for use in Underwater Pressure compensator piston stroke
Measurement, belong to Underwater Pressure compensator technical field.
Background technology
As Underwater Pressure changes, adverse effect is brought to the hydraulic system of underwater operation, therefore pressure need to be used to mend
Repay device balance system external and internal pressure.It can be not only used for compensation system work when flow needed for actuator and fluid because itself
Changes in flow rate caused by elastic deformation, temperature etc., automatic environmental pressure compensation can also be carried out to system, avoid hyperbaric environment pair
System has adverse effect on, and ensures reliable, the trouble free service of actuator.Currently used compensator has bladder, metal foil
The type such as membrane type and bellows-type.When wherein measuring piston stroke, frequently with stay-supported type displacement sensor, but occupancy volume is needed
The external space, make that there is certain limitation during its use.
The content of the invention
The purpose of this utility model is to solve currently used in measurement Underwater Pressure compensator piston stroke measurement process
The defects of existing and deficiency, there is provided a kind of device for being used to measure Underwater Pressure compensator piston stroke.
To achieve the above object, the utility model adopts the technical scheme that：
A kind of device for being used to measure Underwater Pressure compensator piston stroke of the present utility model, including housing and piston,
The described device for being used to measuring Underwater Pressure compensator piston stroke also include Hall element, diaphragm, magnet steel, spring, guide rod,
Piston gland and nut, described shell one end are blind end, and the other end is opening end, and described piston ring set is in housing
Portion, piston are provided with center cavity, and one end of piston is opening end, and the other end is blind end, the envelope of the opening end corresponding housing of piston
Closed end, the blind end of housing is provided with seawater access apertures, piston gland is provided with the outside of the blind end of piston in housing, described
Piston gland and piston between be provided with diaphragm, described diaphragm extends always along housing inner circumferential side wall is fixed on housing opening
In the annular groove that end face is provided with, form hydraulic pressure cargo tank on the inside of diaphragm, described guide rod by one end to the other end by be made as one and
Threaded rod, cylindrical bar and the annular outer that diameter increases successively are formed, housings close end middle part, piston blind end middle part, diaphragm
Middle part and piston gland in the middle part of be respectively equipped with centre bore, threaded rod one end of guide rod sequentially passes through the centre bore of housing, piston
Centre bore, the centre bore of diaphragm and the centre bore of piston gland, screwed nut, piston gland court on the threaded rod of guide rod
To a side end face upper groove of the hydraulic pressure cargo tank, described magnet steel is fixed in the groove of piston gland, and magnet steel uses permanent magnetism
Material is made, and described Hall element is arranged on hull outside, and the Hall installation that Hall element is fixed on submersible machine covers, suddenly
You are set element with magnet steel face.
The utility model is relative to the beneficial effect of prior art：Due to magnet steel（Permanent-magnet material）Center leakage field magnetic it is close with
Hall element axial distance has the relation of determination, and piston stroke can relatively accurately be measured by detecting leakage field according to Hall element,
And it is simple in construction, occupy little space, precision is high, high pressure resistant, applied widely, is easy to implement pressure compensation.
Brief description of the drawings
Fig. 1 is the main sectional view of the present utility model for being used to measure the device of Underwater Pressure compensator piston stroke；
Fig. 2 is partial enlarged drawing at Fig. 1 A；
Fig. 3 is partial enlarged drawing at Fig. 1 B；
Fig. 4 is a height of 3mm of cylinder magnet steel, the variation relation of leakage field size and the central axial distance of magnet steel during a diameter of 14mm
Figure.
Component names and label in figure are as follows：
Hall element 1, diaphragm 2, magnet steel 3, piston 4, spring 5, guide rod 6, seawater access apertures 7, piston gland 8, housing 9,
Hydraulic pressure cargo tank 10, threaded rod 11, cylindrical bar 12, annular outer 13, nut 14, submersible machine 15, annular boss 1, convex annular
Platform 2 17, Hall installation lid 18.
Embodiment
In order to be better understood from the scheme of the utility model patent, the technical solution of the utility model is made with reference to accompanying drawing into
The explanation of one step, but be not limited thereto, it is every technical solutions of the utility model to be modified or equivalent substitution, without de-
From the spirit and scope of technical solutions of the utility model, all should cover in the scope of protection of the utility model.
Embodiment one：As shown in Figure 1-Figure 3, present embodiment discloses a kind of for measuring Underwater Pressure compensation
The device of device piston stroke, including housing 9 and piston 4, the described device for being used to measure Underwater Pressure compensator piston stroke
Also include Hall element 1, diaphragm 2, magnet steel 3, spring 5, guide rod 6, piston gland 8 and nut 14, described one end of housing 9 is envelope
Closed end, the other end are opening end, and for the described ring set of piston 4 inside housing 9, piston 4 is provided with center cavity, one end of piston 4
For opening end, the other end is blind end, and the blind end of the opening end corresponding housing 9 of piston 4, the blind end of housing 9 is provided with sea
Water access apertures 7, is provided with piston gland 8 in housing 9 on the outside of the blind end of piston 4, described piston gland 8 and piston 4 it
Between be provided with diaphragm 2, described diaphragm 2 extends the ring for being fixed on 9 open end face of housing and being provided with along the inner circumferential side wall of housing 9 always
In groove, the inner side of diaphragm 2 forms hydraulic pressure cargo tank 10, and described guide rod 6 is by one end to the other end by being made as one and diameter increases successively
Big threaded rod 11, cylindrical bar 12 and annular outer 13（When guide rod 6 is moved to the left, axial limiting work is played in annular outer 13
With）Form, during the blind end of housing 9 middle part, the blind end of piston 4 middle part, the middle part of diaphragm 2 and the middle part of piston gland 8 are respectively equipped with
Heart hole, threaded rod one end of guide rod 6 sequentially pass through the centre bore of housing 9, the centre bore of piston 4, the centre bore of diaphragm 2 and work
The centre bore of gland 8 is filled in, nut 14 has been screwed on the threaded rod 11 of guide rod 6（Pass through screwing piston gland 8, film for nut 14
Piece 2 and piston 4 are fixed on guide rod 6）, piston gland 8 is towards a side end face upper groove of the hydraulic pressure cargo tank 10, described magnetic
Steel 3 is fixed in the groove of piston gland 8, and magnet steel 3 is made of permanent-magnet material, and described Hall element 1 is arranged on outside housing 9
Portion, Hall element 1 are fixed on the Hall installation lid 18 of submersible machine 15, and Hall element 1 is set with the face of magnet steel 3.
Embodiment two：Present embodiment is the further explanation made to embodiment one, it is described forever
Magnetic material is neodymium iron boron or SmCo.
Embodiment three：As shown in figure 1, present embodiment is that embodiment one is made furtherly
Bright, the neighboring in the middle part of the described blind end inner surface of housing 9 positioned at centre bore is provided with annular boss 1, described piston 4
In the middle part of blind end inner surface annular boss 2 17,5 liang of described spring are provided with the described opposite position of annular boss 1
End is set in outside the annular boss 1 of housing 9 and the annular boss 2 17 of piston 4.
Embodiment four：As shown in Figure 1 and Figure 2, present embodiment be embodiment two is made it is further
Illustrate, the described profile of magnet steel 3 is cylinder or polygonal prism body.
Embodiment five：As shown in Figure 1 and Figure 2, present embodiment be embodiment one is made it is further
Illustrate, described magnet steel 3 is fixed on by gluing, rivet or pin or mosaic mode in the groove of piston gland 8.For
Local environment temperature is not high（Usually below 200 DEG C）Occasion, magnet steel 3 can use gluing fixed form, and for ring
Border temperature has higher（Usually more than 200 DEG C）Requirement when, then should be by the way of rivet, pin be fixed or inlayed.
Embodiment six：As shown in Figure 1 and Figure 2, present embodiment be embodiment one is made it is further
Illustrate, described magnet steel 3 is in towards a side end face of hydraulic pressure cargo tank 10 with piston gland 8 towards the side end face of hydraulic pressure cargo tank 10
Same plane.
Operation principle：The hydraulic pressure cargo tank of diaphragm 2 enters to piston 4 built with hydraulic oil, seawater by seawater access apertures 7
In inner chamber（I.e. left side is hydraulic oil, and right side is seawater）, with the continuous enhancing of seawater pressure, piston 4 is moved to the left, spring 5
It is stretched, the magnet steel 3 being fixed in the groove of piston gland 8 is made of permanent-magnet material, can be neodymium iron boron and SmCo.Face
Magnet steel 3 is Hall element 1, for detecting the magnetic field size of magnet steel 3.
Using finite element software to the technical solution of the utility model carry out simulation analysis, simulation model be actual device just
The half of view.Magnet steel 3 uses cylinder, as a height of 3mm of cylinder, a diameter of 14mm, the distribution of the center leakage field magnetic line of force
To increase with axial distance, the close amplitude of magnetic is less and less.
As shown in figure 4, can more directly it find out：Magnet steel 3 uses cylinder, a diameter of as a height of 3mm of cylinder
During 14mm, with the increase of Hall element 1 and the distance of magnet steel 3, the close rapid decrease of leakage field magnetic.According to this curve and Hall element
The 1 close size of the magnetic detected, it can be deduced that compensator stroke（I.e. magnet steel 3 is apart from the distance between Hall element 1 H, such as Fig. 1 institutes
Show）.
Claims (6)
1. a kind of device for being used to measure Underwater Pressure compensator piston stroke, including housing（9）And piston（4）, its feature exists
In：The described device for being used to measure Underwater Pressure compensator piston stroke also includes Hall element（1）, diaphragm（2）, magnet steel
（3）, spring（5）, guide rod（6）, piston gland（8）And nut（14）, described housing（9）One end is blind end, and the other end is
Opening end, described piston（4）Ring set is mounted in housing（9）Inside, piston（4）Provided with center cavity, piston（4）One end for opening
End, the other end are blind end, piston（4）Opening end corresponding housing（9）Blind end, housing（9）Blind end be provided with sea
Water access apertures（7）, housing（9）It is interior to be located at piston（4）Blind end on the outside of be provided with piston gland（8）, described piston gland（8）
With piston（4）Between be provided with diaphragm（2）, described diaphragm（2）Along housing（9）Inner circumferential side wall extends always is fixed on housing
（9）In the annular groove that open end face is provided with, diaphragm（2）Inner side forms hydraulic pressure cargo tank（10）, described guide rod（6）By one end to another
One end is by the threaded rod that is made as one and diameter increases successively（11）, cylindrical bar（12）With annular outer（13）Form, housing（9）
Blind end middle part, piston（4）Blind end middle part, diaphragm（2）Middle part and piston gland（8）Middle part is respectively equipped with centre bore, leads
Bar（6）Threaded rod one end sequentially pass through housing（9）Centre bore, piston（4）Centre bore, diaphragm（2）Centre bore and
Piston gland（8）Centre bore, guide rod（6）Threaded rod（11）On screwed nut（14）, piston gland（8）Towards the liquid
Press oil cabin（10）A side end face upper groove, described magnet steel（3）It is fixed on piston gland（8）Groove in, magnet steel（3）Using
Permanent-magnet material is made, described Hall element（1）It is arranged on housing（9）Outside, Hall element（1）It is fixed on submersible machine（15）
Hall installation lid（18）On, Hall element（1）With magnet steel（3）Face is set.
A kind of 2. device for being used to measure Underwater Pressure compensator piston stroke according to claim 1, it is characterised in that：
Described permanent-magnet material is neodymium iron boron or SmCo.
A kind of 3. device for being used to measure Underwater Pressure compensator piston stroke according to claim 1, it is characterised in that：
Described housing（9）Neighboring in the middle part of blind end inner surface positioned at centre bore is provided with annular boss one（16）, described piston
（4）Blind end inner surface middle part and described annular boss one（16）Opposite position is provided with annular boss two（17）, it is described
Spring（5）Both ends are set in housing（9）Annular boss one（16）And piston（4）Annular boss two（17）It is outside.
A kind of 4. device for being used to measure Underwater Pressure compensator piston stroke according to claim 2, it is characterised in that：
Described magnet steel（3）Profile is cylinder or polygonal prism body.
A kind of 5. device for being used to measure Underwater Pressure compensator piston stroke according to claim 1, it is characterised in that：
Described magnet steel（3）Piston gland is fixed on by gluing, rivet or pin or mosaic mode（8）Groove in.
A kind of 6. device for being used to measure Underwater Pressure compensator piston stroke according to claim 1, it is characterised in that：
Described magnet steel（3）Towards hydraulic pressure cargo tank（10）A side end face and piston gland（8）Towards hydraulic pressure cargo tank（10）One side end face
In same plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720921867.XU CN207145375U (en) | 2017-07-27 | 2017-07-27 | A kind of device for being used to measure Underwater Pressure compensator piston stroke |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720921867.XU CN207145375U (en) | 2017-07-27 | 2017-07-27 | A kind of device for being used to measure Underwater Pressure compensator piston stroke |
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| CN207145375U true CN207145375U (en) | 2018-03-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107339287A (en) * | 2017-07-27 | 2017-11-10 | 哈尔滨工业大学 | A kind of device and method for being used to measure Underwater Pressure compensator piston stroke |
-
2017
- 2017-07-27 CN CN201720921867.XU patent/CN207145375U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107339287A (en) * | 2017-07-27 | 2017-11-10 | 哈尔滨工业大学 | A kind of device and method for being used to measure Underwater Pressure compensator piston stroke |
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