CN209027627U - A kind of shell structure of LNG gas cylinder capacitance level transducer - Google Patents
A kind of shell structure of LNG gas cylinder capacitance level transducer Download PDFInfo
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- CN209027627U CN209027627U CN201822240019.XU CN201822240019U CN209027627U CN 209027627 U CN209027627 U CN 209027627U CN 201822240019 U CN201822240019 U CN 201822240019U CN 209027627 U CN209027627 U CN 209027627U
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- inner tube
- fixed ring
- tube
- end head
- insulating spacer
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- 125000006850 spacer group Chemical group 0.000 claims abstract description 42
- 238000003780 insertion Methods 0.000 claims abstract description 8
- 230000037431 insertion Effects 0.000 claims abstract description 8
- 238000004080 punching Methods 0.000 claims description 14
- 238000009413 insulation Methods 0.000 claims description 3
- 239000003949 liquefied natural gas Substances 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 239000007789 gas Substances 0.000 description 7
- 238000003466 welding Methods 0.000 description 7
- 230000008901 benefit Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
Abstract
The utility model discloses a kind of shell structures of LNG gas cylinder capacitance level transducer, including outer tube, inner tube, inner tube is coaxially disposed in outer tube, the upper and lower ends of inner tube are correspondingly provided with insulating spacer and lower insulating spacer, in one section of insertion inner tube of upper insulating spacer, one section is located at outside inner tube, and upper end head is correspondingly provided on the centre bore of upper insulating spacer, and upper end head and outer tube wall, which are formed, to be interference fitted；In one section of insertion inner tube of lower insulating spacer, one section is located at outside inner tube, and lower end head is correspondingly provided on the centre bore of lower insulating spacer, and lower end head and outer tube outer wall form interference fit.Interference fit is formed by upper end head and outer tube wall, lower end head and outer tube outer wall form interference fit, and the variation of inner and outer pipes gap is excessive under the action of alternating temperature-changing so as to avoid sensor, and then improves the stability of capacitance.
Description
Technical field
The utility model relates to capacitance level transducer fields, and in particular to a kind of LNG gas cylinder capacitance type liquid level sensing
The shell structure of device.
Background technique
LNG is liquefied natural gas, due to its with colourless, tasteless, nontoxic and non-corrosive, burning and exhausting to environment without
The characteristics such as pollution are the clean energy resourcies generally acknowledged in the world at present, and volume is about the 1/600, LNG of same amount gaseous natural gas volume
Weight be only 45% or so of androgynous ponding.Other than being used widely in industry, city dweller family, it is also used as vapour
The vehicle energy replaces gasoline and diesel oil.In order to measure the liquid level of LNG gas cylinder, it is necessary to install capacitance type liquid level on LNG gas cylinder and pass
Sensor.The end socket part of current capacitance level transducer shell is various, by being welded to connect between each part, due to weld seam
And welding stress is uneven, causes the difference between each capacitor larger, cannot guarantee that the requirement of assembly concentricity.It is existing simultaneously
With the presence of shell inner and outer pipes used by round tube manufacture on deviation from circular from and use environment alternating temperature-changing influence,
So that capacitance is unstable.
Utility model content
The utility model aim is that the end socket part for solving existing capacitance level transducer shell is various, part it
Between connect when weldering Stress non-homogeneity the problem of, provide a kind of shell structure of LNG gas cylinder capacitance level transducer, pass through by
Numerous part centralization form upper end head and lower end head, are formed respectively with outer tube using upper end head and lower end head
It is full of cooperation, the variation of inner and outer pipes gap is excessive under the action of alternating temperature-changing so as to avoid sensor, and then improves capacitance
Stability.
The utility model is achieved through the following technical solutions:
A kind of shell structure of LNG gas cylinder capacitance level transducer, including outer tube and inner tube, inner tube are set in outer tube
And be arranged with outer coaxial tube, the upper and lower ends of inner tube are correspondingly provided with insulating spacer and lower insulating spacer, one section of upper insulating spacer
It is embedded in inner tube, one section is located at outside inner tube, and upper end head, upper end head and outer tube are correspondingly provided on the centre bore of upper insulating spacer
Inner wall forms interference fit；In one section of insertion inner tube of lower insulating spacer, one section is located at outside inner tube, on the centre bore of lower insulating spacer
It is correspondingly provided with lower end head, lower end head and outer tube outer wall form interference fit.Outer tube and inner tube coaxial arrangement, and inner tube and outer
There are certain spacing between pipe, to be contrasted two capacitor plates of capacitor, upper and lower insulating spacer cooperates end seal up and down
Head, by between inner and outer tubes interlayer close, thus prevent impurity by the upper end or lower end of this shell enter outer tube and
Between inner tube, the using effect of sensor is influenced.Interference fit, lower end head are formed additionally by upper end head and outer tube wall
It is formed and is interference fitted with outer tube outer wall, so as to avoid sensor, the variation of inner and outer pipes gap is excessive under the action of alternating temperature-changing,
And then improve the stability of capacitance.
Further, upper end head include upper inner tube fixed ring, upper exterior tube fixed ring and connect upper inner tube fixed ring and on
The upper annular thin wall of outer tube fixed ring, upper inner tube fixed ring are fixed in insulating spacer, and upper exterior tube fixed ring is embedded in outer tube
Upper end forms interference fit between upper exterior tube fixed ring and outer tube.Upper inner tube fixed ring is fixed in upper insulating spacer, upper ring
Shape thin-walled is embedded in upper insulating spacer, is connected on the outside of upper annular thin wall with upper exterior tube fixed ring, and the support to outer tube is formed.In addition
Upper inner tube fixed ring, upper exterior tube fixed ring are connected to form a whole part-upper end head by upper annular thin wall, thus
Installation steps are simplified, the globality of shell is improved, has saved the set-up time, improve work efficiency.
Further, lower end head include lower inner tube fixed ring, lower outer pipe fixed ring and connect lower inner tube fixed ring and under
The lower annular thin wall of outer tube fixed ring, lower inner tube fixed ring are fixed in lower insulating spacer, and lower outer pipe Fixing shrink ring is set to outer tube
Lower end, lower annular thin wall is embedded in lower insulating spacer.Lower inner tube fixed ring is fixed in lower insulating spacer, lower annular thin wall
It is embedded in lower insulating spacer, is connected on the outside of lower annular thin wall with lower outer pipe fixed ring, form the support to outer tube.In addition in will be lower
Pipe fixed ring, lower outer pipe fixed ring are connected to form a whole part-lower end head by lower annular thin wall, and then simplify
Installation steps improve the globality of structure.
Further, multiple annular grooves are equipped in outer tube and inner tube, the coaxial spaced set of annular groove is in outer tube and interior
Guan Shang.Annular groove is recessed by tube wall, and annular groove is added on outer tube and inner tube, and annular groove can increase bending resistant section system
Number enhances the ability of pipeline resistance to deformation, on the one hand improves the rigidity of outer tube and inner tube；On the other hand, tube wall indent can make
Controllable deforming occurs for steel pipe, adjusts pipe circularity, guarantees that inner and outer pipes gap is uniform；Groove internal stress can also stop warm varying load
Deformation.
Further, upper end head and lower end head are by punching stretch forming.Punching press is efficient production method, is used
Compound die, especially multi-station progressive die can complete multi-step forming processes on a press machine, realize by strip uncoiling, rectify
Fully-automatic production of the flat, punching to forming, finishing.High production efficiency, working condition is good, and production cost is low, generally per minute may be used
Produce hundreds of.Compared with other methods of machining and plastic processing, no matter punch process is in technical aspect or economy
It is many unique that aspect all has the advantages that, the upper end head and lower end head size and shape precision formed by punching stretch,
It is compared compared to traditional welding, in raising while lower head each part concentricity, can further correct the circle of inner and outer pipe
Degree.And the manufacturing cycle is shortened, production cost is reduced.
Further, interior channel closure is equipped in inner tube, interior channel closure is set to the top of inner tube against upper insulating spacer, interior
Channel closure is equipped with multiple through-holes.Through-hole is stomata, is mainly used for the pressure difference of balance shell inside and outside, and through-hole cooperates lower end head
On inlet opening, facilitate the flowing of the liquid between inner and outer pipe.
Further, for interior channel closure by punching stretch forming, interior channel closure includes interior channel closure plectane and positioning ring, through-hole
It is set on interior channel closure plectane, forms interference fit between positioning ring and inner tube.Interior channel closure plectane and positioning ring are by metal plate
Technique punching stretch forms an one-piece parts, and the through-hole on interior channel closure plectane includes being set to interior channel closure plectane center
Aperture, and equally distributed four macropores around aperture surrounding.In addition positioning ring has certain resilience, passes through positioning ring
Screen resilience connect to form interference fit with inner tube wall swelling, and the welding stress for avoiding traditional welding generates shadow to inner tube circularity
It rings；Punching stretch sheet metal process is used additionally, due to interior channel closure, its own circularity is higher, and the screen resilience of positioning ring can also be right
Inner tube plays a part of to correct circularity.
The utility model compared with prior art, has the following advantages and benefits:
1, by the way that numerous part centralization are formed upper end head and lower end head, upper end head and lower end head are utilized
It is formed and is interference fitted with outer tube respectively, so as to avoid sensor, the variation of inner and outer pipes gap is excessive under the action of alternating temperature-changing,
And then improve the stability of capacitance；
2, the upper end head and lower end head size and shape precision formed by punching stretch, compared to traditional welding
It compares, in raising while lower head each part concentricity, can further correct the circularity of inner and outer pipe.And shorten system
The period is made, production cost is reduced；
3, lower inner tube fixed ring, lower outer pipe fixed ring are connected to form a whole part-lower end by lower annular thin wall
End socket, and then installation steps are simplified, improve the globality of structure.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the utility model embodiment, constitutes the one of the application
Part does not constitute the restriction to the utility model embodiment.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the partial sectional view of upper end head in the utility model；
Fig. 3 is the partial sectional view of lower end head in the utility model；
Fig. 4 is the structural schematic diagram of upper end head in the utility model；
Fig. 5 is the structural schematic diagram of lower end head in the utility model；
Fig. 6 is the structural schematic diagram of interior channel closure in the utility model；
Fig. 7 is the partial sectional view of the utility model middle external tube.
Label and corresponding parts title in attached drawing:
Insulating spacer, 5- upper end head, 6- lower end head, 7- annular under 1- outer tube, 2- inner tube, the upper insulating spacer of 3-, 4-
Inner tube fixed ring under the upper inner tube fixed ring of channel closure, 51-, 52- upper exterior tube fixed ring, the upper annular thin wall of 53-, 61- in slot, 8-,
Annular thin wall under 62- lower outer pipe fixed ring, 63-, 81- through-hole, 83- positioning ring, cover on 9- channel closure plectane in 82-.
Specific embodiment
For the purpose of this utility model, technical solution and advantage is more clearly understood, below with reference to embodiment and attached drawing,
The utility model is described in further detail, and the exemplary embodiment and its explanation of the utility model are only used for explaining this
Utility model is not intended to limit the scope of the present invention.
Embodiment
As shown in Figures 1 to 7, a kind of shell structure of LNG gas cylinder capacitance level transducer, including outer tube 1, inner tube 2,
Inner tube 2 is coaxially disposed in outer tube 1, and the upper and lower ends of inner tube 2 are correspondingly provided with insulating spacer 3 and lower insulating spacer 4, upper insulation
In 3 one sections of insertion inner tubes 2 of spacer, one section is located at outside inner tube 2, is correspondingly provided with upper end head 5 on the centre bore of upper insulating spacer 3,
In the present embodiment, upper end head 5 and by punching stretch forming.
Outside upper end head 5 includes upper inner tube fixed ring 51, upper exterior tube fixed ring 52 and the upper inner tube fixed ring 51 of connection and is upper
The upper annular thin wall 53 of pipe fixed ring 52, upper inner tube fixed ring 51 are fixed in insulating spacer 3, and upper exterior tube fixed ring 52 is embedded in
The upper end of outer tube 1, forms interference fit between upper exterior tube fixed ring 52 and outer tube 1, the most of insertion of upper annular thin wall 53 is upper exhausted
In edge spacer 3.
In 4 one sections of insertion inner tubes 2 of lower insulating spacer, one section is located at outside inner tube 2, corresponding on the centre bore of lower insulating spacer 4
Equipped with lower end head 6, lower end head 6 is also by punching stretch forming.In the present embodiment, lower end head 6 includes lower inner tube fixed ring
61, the lower annular thin wall 63 of lower outer pipe fixed ring 62 and connection lower inner tube fixed ring 61 and lower outer pipe fixed ring 62, lower inner tube are solid
Determine ring 61 to be fixed in lower insulating spacer 4, lower outer pipe fixed ring 62 is sheathed on the lower end of outer tube 1, under lower annular thin wall 63 is embedded in
In insulating spacer 4.
In the present embodiment, for the rigidity and ability of anti-deformation for improving outer tube 1 and inner tube 2, it is equipped in outer tube 1 and inner tube 2
Annular groove 7, annular groove 7 are uniformly distributed on outer tube 1 and inner tube 2, and annular groove 7 is reinforcing rib.In addition, being equipped with inner tube in inner tube 2
End socket 8, interior channel closure 8 are set to the top of inner tube 2 against upper insulating spacer 3, and interior channel closure 8 is equipped with multiple through-holes 81.This
In embodiment, for interior channel closure 8 by drawing and forming, interior channel closure 8 includes interior channel closure plectane 82 and positioning ring 83, and through-hole 81 is arranged
In on interior channel closure plectane 82, interference fit is formed between positioning ring 83 and inner tube.Pass through the screen resilience and inner tube 2 of positioning ring 83
Inner wall swelling connects to form interference fit, and the welding stress for avoiding traditional welding has an impact 2 circularity of inner tube；Additionally, due to
Interior channel closure 8 uses punching stretch sheet metal process, its own circularity is higher, and the screen resilience of positioning ring 83 can also play inner tube 2
Correct the effect of circularity.
In addition in the present embodiment, upper end head 5 is externally provided with upper end capping 9, shape between upper end capping 9 and the outer wall of outer tube 1
At interference fit excessively, and upper end capping 9 also uses punching stretch sheet metal process, its own circularity is higher, plays correction to outer tube 1
The effect of circularity.
Above-described specific embodiment, to the purpose of this utility model, technical scheme and beneficial effects carried out into
One step is described in detail, it should be understood that being not used to limit the foregoing is merely specific embodiment of the present utility model
Determine the protection scope of the utility model, within the spirit and principle of the utility model, any modification for being made equally is replaced
It changes, improve, should be included within the scope of protection of this utility model.
Claims (7)
1. a kind of shell structure of LNG gas cylinder capacitance level transducer, which is characterized in that including outer tube (1) and inner tube (2),
Said inner tube (2) is set in outer tube (1) and is coaxially disposed with outer tube (1), and the upper and lower ends of inner tube (2) are correspondingly provided with insulation
Spacer (3) and lower insulating spacer (4), (3) one sections of insertion inner tubes (2) of the upper insulating spacer are interior, and one section is located at inner tube (2) outside,
It is correspondingly provided with upper end head (5) on the centre bore of the upper insulating spacer (3), the upper end head (5) and outer tube (1) inner wall shape
At interference fit；In (4) one sections of insertion inner tubes (2) of the lower insulating spacer, one section is located at inner tube (2) outside, the lower insulation every
It covers and is correspondingly provided with lower end head (6) on the centre bore of (4), the lower end head (6) and outer tube (1) outer wall form interference fit.
2. a kind of shell structure of LNG gas cylinder capacitance level transducer according to claim 1, which is characterized in that institute
Stating upper end head (5) includes that upper inner tube fixed ring (51), upper exterior tube fixed ring (52) and connection are upper inner tube fixed ring (51) and upper
The upper annular thin wall (53) of outer tube fixed ring (52), the upper inner tube fixed ring (51) is fixed in insulating spacer (3), described
Upper exterior tube fixed ring (52) is embedded in the upper end of outer tube (1), forms interference between the upper exterior tube fixed ring (52) and outer tube (1) and matches
It closes.
3. a kind of shell structure of LNG gas cylinder capacitance level transducer according to claim 1, which is characterized in that institute
State lower end head (6) include lower inner tube fixed ring (61), lower outer pipe fixed ring (62) and connect lower inner tube fixed ring (61) and under
The lower annular thin wall (63) of outer tube fixed ring (62), the lower inner tube fixed ring (61) is fixed in lower insulating spacer (4), described
Lower outer pipe fixed ring (62) is sheathed on the lower end of outer tube (1).
4. a kind of shell structure of LNG gas cylinder capacitance level transducer according to claim 1, which is characterized in that institute
It states and is equipped with multiple annular grooves (7) in outer tube (1) and inner tube (2), the coaxial spaced set of the annular groove (7) is in outer tube (1)
On inner tube (2).
5. a kind of shell structure of LNG gas cylinder capacitance level transducer according to claim 1, which is characterized in that institute
Upper end head (5) and lower end head (6) are stated by punching stretch forming.
6. a kind of shell structure of LNG gas cylinder capacitance level transducer according to claim 1, which is characterized in that institute
It states in inner tube (2) and is equipped with interior channel closure (8), said inner tube end socket (8) is set to the upper of inner tube (2) against upper insulating spacer (3)
Portion, said inner tube end socket (8) are equipped with multiple through-holes (81).
7. a kind of shell structure of LNG gas cylinder capacitance level transducer according to claim 6, which is characterized in that institute
Interior channel closure (8) is stated by punching stretch forming, said inner tube end socket (8) includes interior channel closure plectane (82) and positioning ring (83),
The through-hole (81) is set on interior channel closure plectane (82), and interference fit is formed between the positioning ring (83) and inner tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822240019.XU CN209027627U (en) | 2018-12-28 | 2018-12-28 | A kind of shell structure of LNG gas cylinder capacitance level transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822240019.XU CN209027627U (en) | 2018-12-28 | 2018-12-28 | A kind of shell structure of LNG gas cylinder capacitance level transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209027627U true CN209027627U (en) | 2019-06-25 |
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ID=66911212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822240019.XU Active CN209027627U (en) | 2018-12-28 | 2018-12-28 | A kind of shell structure of LNG gas cylinder capacitance level transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209027627U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110440874A (en) * | 2019-08-09 | 2019-11-12 | 苏州赛智达智能科技有限公司 | Sliceable shell for capacitance level transducer |
-
2018
- 2018-12-28 CN CN201822240019.XU patent/CN209027627U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110440874A (en) * | 2019-08-09 | 2019-11-12 | 苏州赛智达智能科技有限公司 | Sliceable shell for capacitance level transducer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 78 Ronggang Road, South Area of Chengdu Modern Industrial Port, Pixian County, Chengdu City, Sichuan Province, 610000 Patentee after: Chengdu meijindi Technology Co.,Ltd. Country or region after: China Address before: No. 78 Ronggang Road, South Area of Chengdu Modern Industrial Port, Pixian County, Chengdu City, Sichuan Province, 610000 Patentee before: CHENGDU MEIJINDI STAINLESS STEEL PRODUCTS Co.,Ltd. Country or region before: China |
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| CP03 | Change of name, title or address |