CN104568055A - Installing structure of electric capacity type liquidometer - Google Patents
Installing structure of electric capacity type liquidometer Download PDFInfo
- Publication number
- CN104568055A CN104568055A CN201510055718.5A CN201510055718A CN104568055A CN 104568055 A CN104568055 A CN 104568055A CN 201510055718 A CN201510055718 A CN 201510055718A CN 104568055 A CN104568055 A CN 104568055A
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- inner ring
- insulation
- level gauge
- mounting structure
- outer tube
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Abstract
The invention discloses an installing structure of an electric capacity type liquidometer. The installing structure comprises an inner pipe, an outer pipe coaxially sleeving the inner pipe, a connecting bottom and a connecting head part which are used for fixing the inner pipe and the outer pipe, wherein the connecting head part comprises an insulating sleeve, a positioning base, a conducting sheet used for conducting a signal on the inner pipe, and a cable wire connecting the conducting sheet, wherein the insulating sleeve is provided with a thin part and a thick part, the thin part of the insulating sleeve is inserted into the inner wall of the inner pipe and is connected with the inner wall of the inner pipe, a circulating gap is formed between the thick part of the insulating part and the inner wall of the outer pipe; the positioning base is used for clamping and fixing the insulating sleeve and the outer pipe and comprises an inner ring and an outer ring which are integrally formed, and a first communicating connecting part for connecting the inner ring and the outer ring, the inner ring is inserted into the inner wall of the insulating sleeve and is connected with the inner wall of the insulating sleeve, the outer ring tightly sleeves the outer wall of the outer pipe and is fixedly connected with the outer wall of the outer pipe, and the cable wire extends out from the positioning base through a threading part of the inner ring. The inner pipe is stably connected with the outer pipe, so that a connecting structure is small in interference to the liquidometer, and is convenient to install.
Description
Technical field
The present invention relates to a kind of liquid level gauge by capacitance variations determination liquid level between inner and outer tubes, more particularly its mounting structure.
Background technology
Insulate between the metal inner pipe of capacitance level gauge and outer tube, form an electric capacity, when liquid level rises between inner and outer tubes, between two pipes, media variations is to make the electric capacity respective change of generation, and transmitter determines corresponding liquid level according to gained electric capacity.In common capacitance level gauge, the syndeton connecting inner and outer tubes is formed in the following manner, weld conductive sheet on inner pipe, conductive sheet is connected to cable, then insulation sleeve is connected with interior pipe, then uses internal locking ring fixed insulation cover, internal locking ring is fixedly connected with sheet, outer tube overlaps upper bed-plate ring, by the mode of welding, the place that internal locking ring, brace are connected with base ring is fixed.Installation steps are loaded down with trivial details; probably cause connection not in place; cause the exception of Signal transmissions or disturbed, and this mounting structure is firm not, easily loosens; because brace needs to pass through liquid; thus need spot welding for the connection between brace and base ring, syndeton is easily fallen and is come off, for the large-scale gas tank gas cylinder using liquid level gauge to measure liquid level; scrapping of liquid level gauge just equals scrapping of gas tank gas cylinder itself, causes heavy losses.
Summary of the invention
The object of this invention is to provide a kind of mounting structure of capacitance level gauge, the stable connection between inner and outer tubes, self interference that syndeton is brought to liquid level gauge is little, and install convenient.
In order to solve the problems of the technologies described above, the present invention adopts following technical scheme: a kind of mounting structure of mounting structure of capacitance level gauge, comprises interior pipe, is coaxially coated at the outer tube of interior pipe, bottom the connection of fixing described inner and outer tubes and connection header; Described connection header comprises insulation sleeve, positioning seat, the conductive sheet of signal on conducting internal tube, and connects the cable of conductive sheet; Wherein, described insulation sleeve has thin portion and thick portion, and its thin portion inserts inner tube wall and is connected with it, has passage gaps between its thick portion and outer tube wall; Described positioning seat is fixedly clamped described insulation sleeve and outer tube, it comprises integrated inner ring, outer shroud and connects the first-class communication connection of its inner ring and outer shroud, inner ring is inserted insulation sleeve inwall and is connected with it, outer shroud tightly overlaps outer tube outer wall and is fixedly connected with it, and described cable stretches out in positioning seat by the threading portion of inner ring.
According to one embodiment of present invention, described conductive sheet is provided with at least two perforates, and heart yearn one end of described cable is successively passed perforate and is weldingly fixed in described conductive sheet by sheet metal.
According to one embodiment of present invention, described conductive sheet is cruciformity, and is fixedly welded on interior pipe top ends.
According to one embodiment of present invention, the threading portion of described positioning seat inner ring establishes insulation wire bushing, the internal diameter of described insulation wire bushing is greater than the external diameter of cable.
According to one embodiment of present invention, the threading portion of described inner ring is positioned at the axial direction of inner ring, and described insulation wire bushing comprises body portion and blocking part, and its body portion inserts the threading portion of inner ring, its blocking part props up the lower surface of inner ring, and described lower surface is the plane of inner ring near described conductive sheet.
According to one embodiment of present invention, described connection bottom comprises bottom insulation cover, bottom positioning seat; Described bottom insulation cover comprises thin portion and thick portion, and its thin portion inserts inner tube wall and is connected with it, has passage gaps between its thick portion and outer tube wall; Described bottom positioning seat be fixedly clamped described bottom insulation cover and outer tube, it second communication connection comprising integrated inner ring, outer shroud and connect its inner ring and outer shroud, inner ring is inserted bottom insulation cover inwall and is connected with it, and outer shroud is tightly placed in outer tube outer wall and is fixedly connected with it.
According to one embodiment of present invention, described insulation sleeve and bottom insulation cover are insulation swivel nut, the thin portion of insulation sleeve and bottom insulation cover is threaded portion, be spirally connected with the inwall of interior pipe top and bottom respectively, the thick portion external diameter of insulation sleeve and bottom insulation cover is all greater than interior pipe external diameter and is less than outer tube diameter.
According to one embodiment of present invention, the material of described insulation sleeve and bottom insulation cover is teflon.
According to one embodiment of present invention, the Cu Bu outer face edge of described bottom insulation cover is provided with chamfering.
According to one embodiment of present invention, described outer shroud side is provided with through wires hole, described through wires hole is established insulation protective ring, and described cable is by passing outer shroud through wires hole behind the inner ring threading portion of positioning seat.
After adopting technique scheme, the present invention compared with prior art has following outstanding advantages: be connected and fixed by connection header between outer tube and interior pipe, be connected and fixed by tight inserting mode between insulation sleeve and interior pipe, insulation between outer tube and insulation sleeve negotiable liquid in other words conj.or perhaps keeps gas connectivity, by integrated positioning seat by insulation sleeve and outer tube clamping, positioning seat is fixedly connected with outer tube, such as be welded to connect in the outer tube outer annular edge edge connected, when mounting structure decreases installation, parts connect self undesired signal caused not in place, capacitance measurement has more accuracy, and the spot welding avoided between component connects, firmly not easily broke, extend the serviceable life of liquid level gauge.
Further, between conducting internal tube and outer tube electric capacity conductive sheet on establish at least two perforates, to be welded on sheet metal after the heart yearn of cable is wound around through perforate successively (such as aluminium flake etc. can conduct electricity hard metal sheet), this cable connected mode makes cable not easily pull apart, and liquid level gauge is more firm.
Accompanying drawing explanation
Fig. 1 is the cross-sectional view of the mounting structure of a kind of capacitance level gauge of the embodiment of the present invention;
Fig. 2 is the exploded perspective view of the capacitance level gauge of Fig. 1;
Fig. 3 is the enlarged diagram of the local X in Fig. 1;
Fig. 4 is the enlarged diagram of the local Y in Fig. 1;
Fig. 5 is a kind of positioning seat schematic diagram of the embodiment of the present invention.
Embodiment
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, are described in detail the specific embodiment of the present invention below in conjunction with accompanying drawing.
Set forth a lot of detail in the following description so that fully understand the present invention.But the present invention can be much different from alternate manner described here to implement, those skilled in the art can when without prejudice to doing similar popularization when intension of the present invention, and therefore the present invention is by the restriction of following public concrete enforcement and concrete accompanying drawing.
Fig. 1 shows a kind of installation cross-section structure of capacitance level gauge, comprises interior pipe 1, is coaxially coated at the outer tube 2 of interior pipe 1, bottom the connection of fixing described interior pipe 1 and outer tube 2 and connection header.Inner and outer tubes are independently parts before the mounting, common, the length of outer tube is longer than the length of interior pipe, for concise and to the point description, in the connection of connection header with each component and interior pipe outer tube that are connected bottom, do not specifically note the bottom of inner and outer tubes or top, but be appreciated that, described connection bottom is the syndeton for connecting bottom inner and outer tubes, and described connection header is the syndeton for connecting inner and outer tubes top.
Concrete, liquid level gauge is carried out blast signal by Fig. 2, and connection header comprises insulation sleeve 31, positioning seat 32, for the conductive sheet 33 of signal on conducting internal tube 1, and connects the cable 34 of conductive sheet 33.Positioning seat 32 is one-body molded, liquid level gauge is installed convenient, and avoids the disturbing factor introduced when installing numerous and diverse component, and the measurement of liquid level gauge to electric capacity is more accurate.Mounting means comprises: first cable 34 and conductive sheet 33 are connected and fixed, conductive sheet 33 is welded on interior pipe 1, certain space is reserved then to connect insulation sleeve 31 in interior pipe 1 top after welding conductive sheet, insulation sleeve 31 is connected with interior pipe 1, and part is stayed outside interior pipe 1, stay part outside interior pipe 1 and outer tube 2 with positioning seat 32 insulation sleeve 31 that is fixedly clamped again, the edge welding of outer tube 2 can be connected further at positioning seat 32.The mounting structure formed thus, firmly resistance toly falls, long service life.
Referring to Fig. 3, Local map X amplifies connection header, described insulation sleeve 31 has the thin portion of same inner diameter and thick portion, in its thin portion inserts, pipe 1 inwall is connected with interior pipe 1, the external diameter in thin portion cooperatively interacts with interior pipe 1 internal diameter thus makes to be connected closely between the two, remain with passage gaps between its thick portion and outer tube 2 inwall, this passage gaps is used for by liquid, and also namely the external diameter in thick portion is less than the internal diameter of outer tube 2, positioning seat 32 is fixedly clamped described insulation sleeve 31 and outer tube 2, positioning seat 32 such as shown in Fig. 5, it comprises integrated inner ring 321, outer shroud 322 and connect described inner ring 321 and outer shroud 322 and the first-class communication connection 323 of negotiable liquid, composition graphs 2 and Fig. 5, inner ring 321 embeds insulation sleeve 31 inwall and is connected with it, outer shroud 322 tightly cover outer tube 2 outer wall is connected with it, first-class communication connection 323 is provided with opening, the discrepancy that this opening is used for liquid in other words conj.or perhaps in order to ensure the connection header gas flow general character so that liquid is come in and gone out between inner and outer pipes, cause the change of electric capacity, gained electric capacity is transferred in outer transmitter by cable 34 and processes, described cable 34 stretches out positioning seat 32 by the threading portion of inner ring 321.
In the embodiment that a cable 34 and conductive sheet 33 are connected and fixed, described conductive sheet 33 is provided with at least two perforates, the conductive sheet 33 of Fig. 2 is provided with two perforates, the heart yearn of described cable 34 is successively through after perforate, by sheet metal, heart yearn is welded and fixed, described metal sheets is as being aluminium flake, because heart yearn is likely pullled, the cable of prior art is by being welded in conductive sheet after lock sleeve, easily make heart yearn sealing-off, signal is caused to transmit or to transmit generation error, snarled by heart yearn around hole and the mode be welded and fixed with sheet metal, the strength of joint of heart yearn can be ensured.
Conductive sheet 33 1 aspect is for transmitting the signal (capacitance signal) of interior pipe 1 to heart yearn, ensure gas or the flow path of connection header on the other hand, in one embodiment, referring to Fig. 2, for ease of welding, described conductive sheet 33 is in cruciformity, and when installing liquid level gauge, four ends of cross are weldingly fixed on interior pipe 1.
Continue referring to Fig. 3, the threading portion of described inner ring 321 is positioned at the axial direction of inner ring 321, for alleviating the wearing and tearing of cable 34, the threading portion of described inner ring 321 establishes insulation wire bushing 35, the internal diameter of described insulation wire bushing 35 is greater than the external diameter of cable 34, cable 34 stretches out in positioning seat 32 through insulation wire bushing 35, cable 34 has movable space in insulation wire bushing 35, this space ensures the circulation of gas, connection header and the circulation being connected bottom gas, ensure that liquid freely can be elevated in interior pipe 1, and reduce the resistance of liquid level gauge.
Further, as Fig. 3, described insulation wire bushing 35 comprises body portion and blocking part, the body portion of described insulation wire bushing 35 inserts the threading portion of inner ring 321 until inner ring 321 exit of extraction cable 34, the blocking part of insulation wire bushing 35 props up the lower surface of inner ring 321, and described lower surface is the plane of inner ring 321 near described conductive sheet 33, and in interior pipe 1, liquid rising can cause air pressure to impact, insulation wire bushing 35 is not welded in inner ring 321, is easy to be rushed to open.
Referring to Fig. 4, Local map Y amplifies connection bottom, and described connection bottom comprises bottom insulation cover 41, bottom positioning seat 42, described bottom insulation cover 41 comprises thin portion and thick portion, and pipe 1 inwall in its thin portion connects, leaves the passage gaps by liquid between its thick portion and outer tube 2 inwall, described bottom positioning seat 42 is fixedly clamped described bottom insulation cover 41 and outer tube 2, it comprises integrated inner ring 421, outer shroud 422 and connect described inner ring 421 and outer shroud 422 and the second communication connection 423 of liquid can be passed in and out, the effect of second communication connection 423 is identical with the effect of first-class communication connection, the inner ring 421 of bottom positioning seat 42 is inserted bottom insulation and is overlapped 41 inwalls and be connected with it, outer shroud 422 tightly cover outer tube 2 outer wall is connected with outer tube, bottom insulation cover 41, bottom positioning seat 42 can with the insulation sleeve 31 of connection header, positioning seat 32 is identical, do not repeat them here.
Preferably, described insulation sleeve 31 and bottom insulation cover 41 are insulation swivel nut, the thin portion of insulation sleeve 31 and bottom insulation cover 41 is threaded portion, is spirally connected respectively with interior pipe 1 inwall, and the thick portion external diameter of insulation sleeve 31 and bottom insulation cover 41 is all greater than interior pipe 1 external diameter and is less than outer tube 2 internal diameter.The material of insulation sleeve 31 and bottom insulation cover 41 can be such as teflon.
Interior between pipe 1 and outer tube 2 with liquid level change turnover for being more conducive to liquid, the Cu Bu outer face edge of bottom insulation cover 41 is provided with chamfering, increases liquid entrance, can alleviate buoyancy resistance when liquid level gauge is inserted in liquid.
In an embodiment, referring to Fig. 2 and Fig. 3, described outer shroud 322 side is provided with through wires hole, described through wires hole is established insulation protective ring 36, and described cable 34 is by passing outer shroud 322 through wires hole behind the inner ring 321 threading portion of positioning seat 32.
Be connected and fixed by connection header between outer tube of the present invention and interior pipe, be connected and fixed by tight inserting mode between insulation sleeve and interior pipe, insulation between outer tube and insulation sleeve negotiable liquid in other words conj.or perhaps keeps gas connectivity, by integrated positioning seat by insulation sleeve and outer tube clamping, positioning seat is fixedly connected with outer tube, such as be welded to connect in the outer tube outer annular edge edge connected, when mounting structure decreases installation, parts connect self undesired signal caused not in place, capacitance measurement has more accuracy, and the spot welding avoided between component connects, firmly not easily broke, extend the serviceable life of liquid level gauge.
Further, between conducting internal tube and outer tube electric capacity conductive sheet on establish at least two perforates, to be welded on sheet metal after the heart yearn of cable is wound around through perforate successively (such as aluminium flake etc. can conduct electricity hard metal sheet), this cable connected mode makes cable not easily pull apart, and liquid level gauge is more firm.
Although the present invention with preferred embodiment openly as above; but it is not for limiting claim; any those skilled in the art without departing from the spirit and scope of the present invention; can make possible variation and amendment, the scope that therefore protection scope of the present invention should define with the claims in the present invention is as the criterion.
Claims (10)
1. the mounting structure of the mounting structure of a capacitance level gauge, comprise interior pipe (1), coaxially be coated at the outer tube (2) of interior pipe (1), bottom the connection of fixing described interior pipe (1) and outer tube (2) and connection header; It is characterized in that, described connection header comprises insulation sleeve (31), positioning seat (32), for the conductive sheet (33) of the upper signal of conducting internal tube (1), and connects the cable (34) of conductive sheet (33); Wherein, described insulation sleeve (31) has thin portion and thick portion, and in its thin portion inserts, pipe (1) inwall is connected with it, has passage gaps between its thick portion and outer tube (2) inwall; Described positioning seat (32) is fixedly clamped described insulation sleeve (31) and outer tube (2), it first-class communication connection (323) comprising integrated inner ring (321), outer shroud (322) and connect its inner ring (321) and outer shroud (322), inner ring (321) is inserted insulation sleeve (31) inwall and is connected with it, outer shroud (322) tightly overlaps outer tube (2) outer wall and is fixedly connected with it, and described cable (34) stretches out in positioning seat (32) by the threading portion of inner ring (321).
2. the mounting structure of capacitance level gauge as claimed in claim 1, it is characterized in that, described conductive sheet (33) is provided with at least two perforates, and heart yearn one end of described cable (34) is successively passed perforate and is weldingly fixed in described conductive sheet (33) by sheet metal.
3. the mounting structure of capacitance level gauge as claimed in claim 1, it is characterized in that, described conductive sheet (33) in cruciformity, and is fixedly welded on interior pipe (1) top ends.
4. the mounting structure of capacitance level gauge as claimed in claim 1, it is characterized in that, the threading portion of described positioning seat (32) inner ring (321) establishes insulation wire bushing (35), the internal diameter of described insulation wire bushing (35) is greater than the external diameter of cable (34).
5. the mounting structure of capacitance level gauge as claimed in claim 4, it is characterized in that, the threading portion of described inner ring (321) is positioned at the axial direction of inner ring (321), described insulation wire bushing (35) comprises body portion and blocking part, its body portion inserts the threading portion of inner ring (321), its blocking part props up the lower surface of inner ring (321), and described lower surface is the plane of inner ring (321) near described conductive sheet (33).
6. the mounting structure of capacitance level gauge as claimed in claim 1, is characterized in that, described connection bottom comprises bottom insulation cover (41), bottom positioning seat (42); Described bottom insulation cover (41) comprises thin portion and thick portion, and in its thin portion inserts, pipe (1) inwall is connected with it, has passage gaps between its thick portion and outer tube (1) inwall; Described bottom positioning seat (42) is fixedly clamped described bottom insulation cover (41) and outer tube (2), it second communication connection (423) comprising integrated inner ring (421), outer shroud (422) and connect its inner ring (421) and outer shroud (422), inner ring (421) is inserted bottom insulation cover (41) inwall and is connected with it, and outer shroud (422) is tightly placed in outer tube (2) outer wall and is fixedly connected with it.
7. the mounting structure of capacitance level gauge as claimed in claim 6, it is characterized in that, described insulation sleeve (31) and bottom insulation cover (41) are insulation swivel nut, the thin portion of insulation sleeve (31) and bottom insulation cover (41) is threaded portion, be spirally connected with the inwall of interior pipe (1) top and bottom respectively, the thick portion external diameter of insulation sleeve (31) and bottom insulation cover (41) is all greater than interior pipe (1) external diameter and is less than outer tube (2) internal diameter.
8. the mounting structure of capacitance level gauge as claimed in claim 6, it is characterized in that, the material of described insulation sleeve (31) and bottom insulation cover (41) is teflon.
9. the mounting structure of capacitance level gauge as claimed in claim 6, it is characterized in that, the Cu Bu outer face edge of described bottom insulation cover (41) is provided with chamfering.
10. the mounting structure of capacitance level gauge as claimed in claim 1, it is characterized in that, described outer shroud (322) side is provided with through wires hole, described through wires hole is established insulation protective ring (36), described cable (34) is by passing outer shroud (322) through wires hole behind inner ring (321) the threading portion of positioning seat (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510055718.5A CN104568055A (en) | 2015-02-03 | 2015-02-03 | Installing structure of electric capacity type liquidometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510055718.5A CN104568055A (en) | 2015-02-03 | 2015-02-03 | Installing structure of electric capacity type liquidometer |
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| CN104568055A true CN104568055A (en) | 2015-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510055718.5A Pending CN104568055A (en) | 2015-02-03 | 2015-02-03 | Installing structure of electric capacity type liquidometer |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106289452A (en) * | 2016-07-29 | 2017-01-04 | 上海航天设备制造总厂 | Point type capacitance liquid level measurement apparatus for rocket fuel depleted shutdown |
| CN106768171A (en) * | 2015-11-20 | 2017-05-31 | 北京航天试验技术研究所 | Deep cooling medium liquid level determining approach in space propultion |
| CN109341813A (en) * | 2018-11-19 | 2019-02-15 | 苏州赛智达智能科技有限公司 | The signal output apparatus and LNG gas cylinder of capacitance level gauge |
| CN109459113A (en) * | 2018-12-28 | 2019-03-12 | 成都市美金迪不锈钢制品有限公司 | A kind of shell structure of LNG gas cylinder capacitance level transducer |
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| JPH09273957A (en) * | 1996-04-08 | 1997-10-21 | Mitsubishi Heavy Ind Ltd | Level measuring apparatus |
| JP2005274481A (en) * | 2004-03-26 | 2005-10-06 | Yazaki Corp | Fluid level detecting device |
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| CN101968372A (en) * | 2009-07-27 | 2011-02-09 | 中国科学院合肥物质科学研究院 | Oil tank level transmitting device |
| CN102680052A (en) * | 2012-05-10 | 2012-09-19 | 张家港市赛达机械有限公司 | Connecting structure of leading-out lead of capacitive low-temperature liquid level meter |
| CN203259220U (en) * | 2013-04-18 | 2013-10-30 | 苏州赛智达智能科技有限公司 | Child-mother capacitive sensor of outer ring structure |
| CN204535815U (en) * | 2015-02-03 | 2015-08-05 | 上海雷尼威尔技术有限公司 | A kind of mounting structure of capacitance level gauge |
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2015
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH09273957A (en) * | 1996-04-08 | 1997-10-21 | Mitsubishi Heavy Ind Ltd | Level measuring apparatus |
| JP2005274481A (en) * | 2004-03-26 | 2005-10-06 | Yazaki Corp | Fluid level detecting device |
| CN201293671Y (en) * | 2008-11-12 | 2009-08-19 | 张家港富瑞特种装备股份有限公司 | Level meter |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768171A (en) * | 2015-11-20 | 2017-05-31 | 北京航天试验技术研究所 | Deep cooling medium liquid level determining approach in space propultion |
| CN106289452A (en) * | 2016-07-29 | 2017-01-04 | 上海航天设备制造总厂 | Point type capacitance liquid level measurement apparatus for rocket fuel depleted shutdown |
| CN109341813A (en) * | 2018-11-19 | 2019-02-15 | 苏州赛智达智能科技有限公司 | The signal output apparatus and LNG gas cylinder of capacitance level gauge |
| CN109459113A (en) * | 2018-12-28 | 2019-03-12 | 成都市美金迪不锈钢制品有限公司 | A kind of shell structure of LNG gas cylinder capacitance level transducer |
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Application publication date: 20150429 |