CN106323421A - Magnetostrictive liquidometer and explosive-proof electronic storehouse - Google Patents
Magnetostrictive liquidometer and explosive-proof electronic storehouse Download PDFInfo
- Publication number
- CN106323421A CN106323421A CN201610938522.5A CN201610938522A CN106323421A CN 106323421 A CN106323421 A CN 106323421A CN 201610938522 A CN201610938522 A CN 201610938522A CN 106323421 A CN106323421 A CN 106323421A
- Authority
- CN
- China
- Prior art keywords
- cylinder barrel
- gland
- warehouse frame
- flame proof
- electronics storehouse
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 210000004907 gland Anatomy 0.000 claims abstract description 64
- 238000007789 sealing Methods 0.000 claims abstract description 33
- 239000000565 sealant Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 18
- 239000007788 liquid Substances 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 238000002955 isolation Methods 0.000 description 4
- 229920000459 Nitrile rubber Polymers 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000644 propagated effect Effects 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/30—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Pressure Vessels And Lids Thereof (AREA)
Abstract
The invention discloses an explosive-proof electronic storehouse. The explosive-proof electronic storehouse comprises a storehouse frame, a cylinder barrel, a top gland, a bottom gland and the like, wherein one end of the storehouse frame allows inserting and fixing of a wiring aviation plug, and the other end allows inserting and fixing of a probing rod; the outer wall of the storehouse frame is sleeved with the cylinder barrel, the top gland and the bottom gland are mounted at two ends of the cylinder barrel in a sleeving manner respectively, and a joint between the cylinder barrel and the storehouse frame can be wrapped and covered with the top gland and the bottom gland. According to the explosive-proof electronic storehouse, a sealed cavity is formed by structures such as the cylinder barrel, the top gland, the bottom gland and the like, primary sealing is formed through inserting connection between the cylinder barrel and the storehouse frame, secondary sealing is formed by the cylinder barrel and the top gland as well as the cylinder barrel and the bottom gland, sealing dimensions formed by side walls of the cylinder barrel, the top gland, the storehouse frame and the bottom gland are larger, a spark even occurring on a line in the electronic storehouse cannot be transmitted to outside, and a good explosive-proof effect is realized. A magnetostrictive liquidometer can realize the same technical effect.
Description
Technical field
The present invention relates to technical field of liquid level measurement, further relate to a kind of magnetostriction liquidometer and flame proof electronics
Storehouse.
Background technology
Magnetostriction liquidometer is widely used in the height of liquid level in oil depot oil storage tank, gas station's oil storage tank and surveys
Amount, magnetostriction liquidometer has a detection bar, arranges a waveguide filament with magnetostriction effect, visit inside detection bar
The top of measuring staff arranges electronics storehouse, is provided with current pulser and strain-pulse testing circuit inside electronics storehouse；On detection bar
Slide suit float, has magnet ring inside float；Detection bar stretches in liquid to be measured, and buoys float is on the surface of liquid.
When measuring, current pulser applies a current impulse on waveguide filament, and current impulse is along waveguide
Silk be axially formed an annular magnetic field, toroidal magnetic field is along waveguide filament travel downward, when the magnetic field propagated runs in float
During the magnetic field that magnet ring is formed, two magnetic fields are overlapped mutually, and waveguide filament can occur immediate set, thus produces a strain arteries and veins
Punching, strain-pulse is propagated to the two ends of waveguide filament, when traveling to the electronics storehouse detecting bar upper end, by strain-pulse testing circuit
Receiving, current impulse time of origin and strain-pulse reception time are multiplied by the spread speed of strain-pulse and are electronics storehouse and float
Between distance.Liquid level just can be obtained according to this magnetostriction principle.
Due to electronics storehouse installation and operation in oil tank, working environment very severe, and internal cable road, electronics storehouse plate etc. are surveyed
Amount circuit, can cause when sparking occurs in circuit and catch fire or the major accident such as blast.The sealing structure in electronics storehouse is generally adopted at present
Realizing sealing with sealing ring, the material of sealing ring is nitrile rubber, and nitrile rubber is the most aging under exposed environments, causes sealing
Lost efficacy, brought hidden danger to the safe operation of magnetostriction liquidometer.
Therefore, for a person skilled in the art, the electronics chamber structure of a kind of magnetostriction liquidometer how is designed,
Having good sealing structure, inside occurs playing good isolation effect during spark phenomenon, is the technology that solution is presently required
Problem.
Summary of the invention
The present invention provides a kind of flame proof electronics storehouse, has good sealing structure, and inside occurs playing during spark phenomenon good
Good isolation effect.Concrete scheme is as follows:
A kind of flame proof electronics storehouse, including:
The warehouse frame of feeler lever is fixed in one end for grafting link air plug, the other end for grafting；
It is set in the cylinder barrel on described warehouse frame outer wall；
It is set with the top gland in the two ends of described cylinder barrel and bottom gland, described top gland and described bottom pressure
The seam parcel of described cylinder barrel with described warehouse frame can be covered by lid.
Alternatively, described top gland and/or described bottom gland are connected fixing with described warehouse frame by trip bolt.
Alternatively, between described warehouse frame and described cylinder barrel, cylinder barrel sealing ring is set；Between described feeler lever and described cylinder barrel
Feeler lever sealing ring is set.
Alternatively, described warehouse frame is offered the tightening hole for plug-in mounting screw, the sidewall of described feeler lever is arranged and institute
State the through hole that tightening hole site is corresponding, described warehouse frame and described feeler lever to connect by screw is fixing.
Alternatively, the distance between described tightening hole and described wiring air plug is between 1/3rd of described warehouse frame length
With 2/3rds.
Alternatively, the quantity in described tightening hole is more than or equal to two, and described tightening hole is distributed evenly in described warehouse frame
Circumference.
Alternatively, on described warehouse frame in the cavity of described wiring air plug is installed filling with sealant.
Alternatively, described bottom gland being offered ring-type inserting groove, described cylinder barrel can be plugged in described inserting groove.
Alternatively, described warehouse frame arranging circular step, the end of described cylinder barrel is plugged on described circular step, makes
Described cylinder barrel flushes with the appearance of described warehouse frame.
Additionally, the present invention also provides for a kind of magnetostriction liquidometer, including the flame proof electronics storehouse described in any of the above-described item.
The present invention provides a kind of flame proof electronics storehouse, the structure such as including warehouse frame, cylinder barrel, top gland and bottom gland.Storehouse
Groove is offered at the two ends of body frame respectively, and one end fixes feeler lever for grafting link air plug, the other end for grafting.At warehouse
Being set with cylinder barrel on the outer wall of frame, cylinder barrel is the housing portion of whole device, acts the effect sealing protection.At the two ends of cylinder barrel respectively
Seam between cylinder barrel and warehouse frame can be wrapped up and being covered by suit top gland and bottom gland, top gland and bottom gland
Lid.The flame proof electronics storehouse of the present invention forms airtight cavity by structures such as cylinder barrel, top gland and bottom glands, by cylinder barrel and
Grafting between warehouse frame forms primary seal, then is formed secondary seal, cylinder by cylinder barrel and top gland, cylinder barrel and bottom gland
The closure size that cylinder, top gland, warehouse frame, the sidewall of bottom gland are formed is bigger, has better seal effect；Even if
Occur on circuit in electronics storehouse that spark phenomenon is also not transferred to outside, serve good flame proof effect.
Additionally, the present invention also provides for a kind of magnetostriction liquidometer, identical technique effect can be realized.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to
Other accompanying drawing is obtained according to these accompanying drawings.
Fig. 1 is the front view in a kind of flame proof electronics storehouse set by the present invention；
Fig. 2 is the top view in a kind of flame proof electronics storehouse set by the present invention；
Fig. 3 is the side view in flame proof electronics storehouse；
Fig. 4 A is the integrally-built axonometric drawing in flame proof electronics storehouse；
Fig. 4 B is the axonometric drawing of flame proof electronics storehouse another angle of overall structure；
Fig. 5 A is the axonometric drawing of warehouse frame；
Fig. 5 B is the top view of warehouse frame；
Fig. 5 C is the front view of warehouse frame；
Fig. 6 is the partial enlarged drawing of part A in Fig. 1.
Including:
Wiring air plug 1, top gland 2, trip bolt 21, cylinder barrel sealing ring 3, cylinder barrel 4, warehouse frame 5, feeler lever sealing ring 6,
Bottom gland 7, feeler lever 8, fluid sealant 9, tightening hole 10.
Detailed description of the invention
The core of the present invention is to provide a kind of flame proof electronics storehouse, has good sealing structure, and internal occur that sparking is existing
As time play good isolation effect.
In order to make those skilled in the art be more fully understood that the present invention, below in conjunction with accompanying drawing and concrete embodiment party
Formula, magnetostriction liquidometer and flame proof electronics storehouse to the application are described in detail explanation.
As depicted in figs. 1 and 2, front view and the top view in a kind of flame proof electronics storehouse set by the present invention are represented respectively.
Flame proof electronics storehouse in the present invention includes the structures such as warehouse frame 5, cylinder barrel 4, top gland 2, bottom gland 7.Wherein 5, warehouse frame
Fixation, one end fixes feeler lever 8 for grafting link air plug 1, the other end for grafting.Wiring air plug 1 passes through plug
Docking with corresponding instrument, the connection of wiring air plug 1 stretches into the space of warehouse frame 5 central authorities, with the wiring board on warehouse frame 5 even
Connecing, it is internal that the waveguide wire drawn from wiring board stretches into feeler lever 8, extends along feeler lever 8.
Cylinder barrel 4 is set in the outer wall of warehouse frame 5, plays the effect of airtight protection, as the housing portion of device.Cylinder barrel 4
Two ends the most through, warehouse frame 5 is set with top gland 2 and bottom gland 7 at the two ends of cylinder barrel 4 after installing, warehouse frame 5 with
Cylinder barrel 4, warehouse frame 5 contact with cylinder barrel 4 cooperation can form seam, top gland 2 and bottom gland 7 can connecing two ends respectively
Seam parcel covers.
The flame proof electronics storehouse of the present invention is by structures such as cylinder barrel 4, top gland 2, bottom gland 7, wiring air plug 1, feeler levers 8
Form airtight cavity, the grafting of cylinder barrel 4 and warehouse frame 5 two ends form primary seal, then by cylinder barrel 4 and top gland 2, cylinder
Cylinder 4 and bottom gland 7 form secondary seal, and it is close that cylinder barrel 4, top gland 2, warehouse frame 5, the sidewall of bottom gland 7 are formed
Envelope size is bigger, has better seal effect；Even if occurring that spark phenomenon is also not transferred on the circuit in electronics storehouse
Outside, serves good flame proof effect.
On the basis of the above, top gland 2 and/or bottom gland 7 are connected fixing with warehouse frame 5 by trip bolt 21,
Namely one or two in top gland 2, both bottom glands 7 is fixed by screws on warehouse frame 5.At top gland 2
And/or the through hole that can pass screw is set on bottom gland 7, as it is shown on figure 3, be the side view in flame proof electronics storehouse, it is illustrated that in
Two screws are used to be fixed.May be used without other fixed form, such as, be adhesively fixed.Overall structure after Gu Ding is such as
Shown in Fig. 4 A and Fig. 4 B, represent the axonometric drawing of flame proof electronics storehouse two different angles of overall structure respectively.
Specifically, cylinder barrel sealing ring 3 is set between warehouse frame 5 and cylinder barrel 4, feeler lever is set between feeler lever 8 and cylinder barrel 4
Sealing ring 6, cylinder barrel sealing ring 3 and feeler lever sealing ring 6 are located close to the marginal position of seam, make inside be hedged off from the outer world, to increase
Strong isolation capacity.Cylinder barrel sealing ring 3 and feeler lever sealing ring 6 can use nitrile rubber etc..
In any of the above-described technical scheme and on the basis of being mutually combined, in order to make the fixing more stable, in storehouse of feeler lever 8
Offering the tightening hole 10 for plug-in mounting screw on body frame 5, tightening hole 10 is perpendicular to the axis direction of feeler lever 8, similarly, at feeler lever
Arrange the through hole corresponding with position, tightening hole 10, warehouse frame 5 and feeler lever 8 on the sidewall of 8 to connect by screw is fixing.Screw is not
It is only capable of limiting the axial displacement of feeler lever 8, moreover it is possible to restriction feeler lever 8 relatively rotates with warehouse frame 5.The top in tightening hole 10 is set to
Conical socket, adapts to the form fit of head of screw, makes the surface of warehouse frame 5 flush after screw-driving.
In traditional electronics chamber structure, can be formed after installing between feeler lever and warehouse and rotate against, be easily caused feeler lever
Interior waveguide filament or connecting line are intertwined, and damage feeler lever structure.And the present invention limits feeler lever 8 and warehouse by screw is fixing
Frame 5, prevents and circumferentially rotates, and fixed effect is stable.Further, the quantity in tightening hole 10 is more than or equal to two, tightening hole
10 circumferences being distributed evenly in warehouse frame 5, make the uniform force of each screw.
Distance between tightening hole 10 and wiring air plug 1 is between 1/3rd and 2/3rds of warehouse frame 5 length.Typically
In the case of the through hole of feeler lever 8 be arranged on the feeler lever 8 position near end, namely feeler lever 8 can extend into warehouse frame 5 and reaches three
The degree of depth of/bis-, preferably makes feeler lever 8 stretch into the half of warehouse frame 5.The built-in length of feeler lever 8 is the longest, with consolidating of warehouse frame 5
Determining effect the most stable, be more difficult to occur relatively rocking, the sealed bottom of warehouse frame 5 also can be thicker simultaneously, also can improve flame proof effect
Really.As shown in Figure 5 A to FIG. 5 C, the respectively axonometric drawing of warehouse frame 5, top view and front view, position middle in warehouse frame 5
Install against end face, carry out for feeler lever 8 end against, limit feeler lever 8 built-in length.On warehouse frame 5, circuit board is set
Installation position, circuit board is arranged on the both sides of warehouse frame 5.
On warehouse frame 5 in the cavity of wiring air plug 1 is installed filling with sealant 9, improve warehouse frame 5 and wiring air plug 1
Between sealing effectiveness.
When mounted, 1, first wiring air plug 1 is installed to the end of warehouse frame 5, and fill upper epoxy sealing glue 9 and complete close
Envelope；2, feeler lever 8 is pierced into the other end of warehouse frame 5 again, and with screw through tightening hole 10, feeler lever 8 and warehouse frame 5 is fastened,
Limit the rotation of movement；3, on warehouse frame 5, cylinder barrel sealing ring 3 is then installed；Cylinder barrel 4 is installed after 4, completing；5, top is installed
Portion's gland 2；6, feeler lever sealing ring 6 is installed；7, gland 7 bottom finally installation.The peace of whole device can be completed by above step
Dress.
Specifically, bottom gland 7 being offered ring-type inserting groove, geomery is identical with cylinder barrel 4 end edge, cylinder barrel 4
Can be plugged in described inserting groove, it is achieved better seal effect.
Meanwhile, warehouse frame 5 arranging circular step, the end of cylinder barrel 4 is plugged on circular step, makes cylinder barrel 4 and warehouse
The appearance of frame 5 flushes.As shown in Figure 6, using this structure, the gap between inside and the outside in electronics storehouse is S-type, relative to biography
The sealing structure of system has bigger closing area.
Part material therefor all non-magnetic materials in electronics storehouse in the present invention, it is to avoid interference acquisition signal；Electronics storehouse is to have
Wiring air plug 1, top gland 2, cylinder barrel sealing ring 3, cylinder barrel 4, warehouse frame 5, feeler lever sealing ring 6, bottom gland 7, feeler lever 8 etc. are several
Major part composition, all can carry out independently installed；The fitted seal of cylinder barrel 4 and warehouse frame 5 uses the sealing ring of flame-resistant high-temperature-resistant, cylinder
Cylinder 4 is coated with by top gland 2；With screw, bottom gland 7 is fixed on warehouse frame 5, and is coated with cylinder barrel 4, bottom gland 7 He
Feeler lever sealing ring 6 is installed between warehouse frame 5, forms annular seal space with feeler lever 8；Wiring board is arranged on warehouse frame 5, by cylinder barrel 4
Cladding；The fixing employing screw of feeler lever 8 and warehouse frame 5, screw through the hole of warehouse frame 5 in the hole, location piercing into feeler lever 8, this
Sample feeler lever 8 is just integrally forming with warehouse frame 5, and feeler lever 8 will not form relative rotary motion with warehouse frame 5.
Additionally, present invention also offers a kind of magnetostriction liquidometer, including above-mentioned flame proof electronics storehouse, can realize identical
Technique effect, other structures of magnetostriction liquidometer refer to prior art, repeat no more herein.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention.
Multiple amendment to these embodiments will be apparent from for those skilled in the art, as defined herein
General Principle, can realize without departing from the spirit or scope of the present invention in other embodiments.Therefore, this
The bright the embodiments shown herein that is not intended to be limited to, and be to fit to and principles disclosed herein and features of novelty phase
The widest consistent scope.
Claims (10)
1. a flame proof electronics storehouse, it is characterised in that including:
The warehouse frame (5) of feeler lever (8) is fixed in one end for grafting link air plug (1), the other end for grafting；
It is set in the cylinder barrel (4) on described warehouse frame (5) outer wall；
It is set with the top gland (2) in the two ends of described cylinder barrel (4) and bottom gland (7), described top gland (2) and institute
State bottom gland (7) can be covered by the seam parcel of described cylinder barrel (4) with described warehouse frame (5).
Flame proof electronics storehouse the most according to claim 1, it is characterised in that described top gland (2) and/or described bottom pressure
Lid (7) is connected fixing with described warehouse frame (5) by trip bolt (21).
Flame proof electronics storehouse the most according to claim 1, it is characterised in that between described warehouse frame (5) and described cylinder barrel (4)
Cylinder barrel sealing ring (3) is set；Feeler lever sealing ring (6) is set between described feeler lever (8) and described cylinder barrel (4).
4. according to the flame proof electronics storehouse described in any one of claims 1 to 3, it is characterised in that offer use on described warehouse frame (5)
In the tightening hole (10) of plug-in mounting screw, the sidewall of described feeler lever (8) is arranged corresponding with described tightening hole (10) position through
Hole, described warehouse frame (5) and described feeler lever (8) connect by screw is fixing.
Flame proof electronics storehouse the most according to claim 4, it is characterised in that described tightening hole (10) and described wiring air plug
(1) distance between is between 1/3rd and 2/3rds of described warehouse frame (5) length.
Flame proof electronics storehouse the most according to claim 5, it is characterised in that the quantity of described tightening hole (10) is more than or equal to two
Individual, described tightening hole (10) is distributed evenly in the circumference of described warehouse frame (5).
Flame proof electronics storehouse the most according to claim 4, it is characterised in that connect described in being used on described warehouse frame (5) installing
Filling with sealant (9) in the cavity of line air plug (1).
Flame proof electronics storehouse the most according to claim 4, it is characterised in that offer ring-type inserting on described bottom gland (7)
Access slot, described cylinder barrel (4) can be plugged in described inserting groove.
Flame proof electronics storehouse the most according to claim 4, it is characterised in that on described warehouse frame (5), circular step is set, institute
The end stating cylinder barrel (4) is plugged on described circular step, makes described cylinder barrel (4) flush with the appearance of described warehouse frame (5).
10. a magnetostriction liquidometer, it is characterised in that include the flame proof electronics storehouse described in any one of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610938522.5A CN106323421A (en) | 2016-10-25 | 2016-10-25 | Magnetostrictive liquidometer and explosive-proof electronic storehouse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610938522.5A CN106323421A (en) | 2016-10-25 | 2016-10-25 | Magnetostrictive liquidometer and explosive-proof electronic storehouse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106323421A true CN106323421A (en) | 2017-01-11 |
Family
ID=57818516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610938522.5A Pending CN106323421A (en) | 2016-10-25 | 2016-10-25 | Magnetostrictive liquidometer and explosive-proof electronic storehouse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106323421A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2405186Y (en) * | 1999-09-14 | 2000-11-08 | 新会市康宇测控仪器仪表工程公司 | Explosion-proof type device for sensing linear displacement caused by magnetostriction |
| CN202547735U (en) * | 2012-03-09 | 2012-11-21 | 石家庄德润环保科技有限公司 | Water level measuring device of open channel dam trough |
| CN203146812U (en) * | 2013-02-26 | 2013-08-21 | 郑州永邦电气有限公司 | Electronic storehouse sealing structure for magnetostriction liquid indicator |
| CN204681710U (en) * | 2015-03-11 | 2015-09-30 | 郑州开物通电子科技有限公司 | A kind of magnetostriction liquidometer high sealing electronics bin device |
| CN205113029U (en) * | 2015-11-27 | 2016-03-30 | 浙江佳力科技股份有限公司 | Explosion -proof type meter box |
| CN206161109U (en) * | 2016-10-25 | 2017-05-10 | 郑州开物通电子科技有限公司 | Flame proof electron chamber is taken into account to magnetic induced shrinkage or elongation liquid level |
-
2016
- 2016-10-25 CN CN201610938522.5A patent/CN106323421A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2405186Y (en) * | 1999-09-14 | 2000-11-08 | 新会市康宇测控仪器仪表工程公司 | Explosion-proof type device for sensing linear displacement caused by magnetostriction |
| CN202547735U (en) * | 2012-03-09 | 2012-11-21 | 石家庄德润环保科技有限公司 | Water level measuring device of open channel dam trough |
| CN203146812U (en) * | 2013-02-26 | 2013-08-21 | 郑州永邦电气有限公司 | Electronic storehouse sealing structure for magnetostriction liquid indicator |
| CN204681710U (en) * | 2015-03-11 | 2015-09-30 | 郑州开物通电子科技有限公司 | A kind of magnetostriction liquidometer high sealing electronics bin device |
| CN205113029U (en) * | 2015-11-27 | 2016-03-30 | 浙江佳力科技股份有限公司 | Explosion -proof type meter box |
| CN206161109U (en) * | 2016-10-25 | 2017-05-10 | 郑州开物通电子科技有限公司 | Flame proof electron chamber is taken into account to magnetic induced shrinkage or elongation liquid level |
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Application publication date: 20170111 |