CN202453040U - Detachably installed split photoelectrical liquid level sensor - Google Patents
Detachably installed split photoelectrical liquid level sensor Download PDFInfo
- Publication number
- CN202453040U CN202453040U CN 201120573678 CN201120573678U CN202453040U CN 202453040 U CN202453040 U CN 202453040U CN 201120573678 CN201120573678 CN 201120573678 CN 201120573678 U CN201120573678 U CN 201120573678U CN 202453040 U CN202453040 U CN 202453040U
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- Prior art keywords
- ring flange
- ring
- sensor
- flange
- liquid level
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- Expired - Lifetime
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- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
A detachably installed split photoelectrical liquid level sensor comprises a photoelectrical sensing head, a pipe body, a flange, a seal ring baffle assembly and a fastening nut. The photoelectrical sensing head is welded to the pipe body, the pipe body penetrates through the flange, the flange and the pipe body are fixed together through the fastening nut, the seal ring baffle assembly is arranged between the fastening nut and the lower end face of the flange, and the flange is fixed with an external storage box through a screw. The split sensor is suitable for conditions that sensors are too long and an installing position of the bottom of a box body is limited, and can adapt to occasions where the requirements for sealing reliability are high.
Description
Technical field
The utility model relates to a kind of BL, is applicable to that the sensor installation site is limited, can't integral installation, also to guarantee the application scenario that seals.
Background technology
Liquid level sensor is used for measuring liquid level.Traditional sensor contour structures is referring to Fig. 1.Sensor is installed on bottom half through ring flange.The Electrophotosensitive head of sensor is connected through conduit with ring flange, is the protection inner structure, and sensor photoelectric sensing head and body, body and ring flange adopt welding manner to guarantee good sealing property and structural strength, and the internal circuit signal is drawn through plug.This structure makes used sensor length depend on the signal measurement position.
Method of attachment commonly used also has bonding way except welding.No. 200920258029 patents a kind of liquid level sensor of Shanghai Sitong Instrument and Meters Factory disclosed, its aluminium shell be connected support and use adhering with epoxy resin.
There are following problem in welding or bonding connected mode:
1) bonding way intensity is not high.
2) bonding agent also can't be used for the propellant that corrosivity is strong, perviousness is strong of dinitrogen tetroxide or uns-dimethylhydrazine and so on;
3) existing sensor mounting means can only push in the casing from the tank downside.Space outerpace is greater than sensor length at least at the bottom of the case, otherwise sensor can't be installed or change.
The utility model content
The technology of the utility model is dealt with problems and is: the deficiency that overcomes prior art; When sensor long; And the bottom half installation site has in limited time, and a kind of split type sensor that can decompose installation is provided, and sensor need guarantee the internal circuit sealing; Decompose the position sealing, can adapt to the demanding occasion of sealing reliability.
The technical solution of the utility model is: a kind of split type photoelectric liquid level sensor that decomposes installation; It is characterized in that: comprise Electrophotosensitive head, body, ring flange, O-ring seal baffle plate assembly, binding nut; Electrophotosensitive head and body weld together, and body passes ring flange, with binding nut ring flange and body are fixed together; Be provided with the O-ring seal baffle plate assembly between described binding nut and the ring flange lower surface, ring flange is fixed through screw and outside tank.
Take the sealing of two pass radial direction seal ring between described body and the ring flange, seal with axial sealing ring in ring flange lower surface and body junction.
Described body lower end is provided with when being used to tighten binding nut the fixedly square boss of body.
The utility model advantage compared with prior art is:
Product was installed space outerpace and was greater than whole sensor length from mounting hole air line distance in the past, and split type sensor can decompose installation, and sensor assembling total length is 120mm, and the action required space is little, was convenient to product and installed, changes.
Description of drawings
Fig. 1 is a liquid level sensor structural representation in the prior art;
Fig. 2 is the utility model liquid level sensor structural representation;
Fig. 3 is the utility model body modular construction synoptic diagram;
Fig. 4 a is the utility model flange plate structure synoptic diagram one;
Fig. 4 b is the utility model flange plate structure synoptic diagram two.
Embodiment
The utility model sensor axis is to being one-piece construction, and body and ring flange coupling part are split-type structural, can decompose installation.When installing space was not limited, sensor installation method was identical with the sensor of general flange plate structure.When sensor installing space during less than sensor length; It is (as shown in Figure 3 sensor to be resolved into sensor body assembly; The body assembly comprises body and Electrophotosensitive head) and ring flange (seeing Fig. 4 a and Fig. 4 b) two parts; Sensor body assembly passes in tank, outside tank, carries out assembly manipulation.Sensor body assembly and ring flange axle matching part are taked the two pass radial seal, and oral area adopts axial seal as being equipped with guarantor's measure.
As shown in Figure 2; The split type photoelectric liquid level sensor structure that can decompose installation mainly comprises Electrophotosensitive head 1, body 2, ring flange 3, O-ring seal baffle plate assembly 4, binding nut 5 and O-ring seal, and the body assembly is made up of Electrophotosensitive head 1 and body 2, is sensor main body; Welding manner is still adopted in both connections; The body assembly passes ring flange 3, and binding nut 5 is fixed together ring flange 3 and body 2, and ring flange 3 is fixed through screw and casing.
Sensor socket 6 is installed in body 2 bottoms, and photoelectric device and lead are sealed in the body assembly, and liquid mediums such as propellant can not infiltrate in tank the sensor, have solved the circuit sealing problem.Also adopt the O-ring seal sealing between ring flange and casing.
For guaranteeing the tank sealing; Take 7 sealings of two pass radial direction seal ring between sensor body and the ring flange; Carry out the secret fully envelope in the 3rd road in ring flange lower surface and sensor body junction with axial sealing ring 8, as preventing that propellant from spilling the ancillary method outside the case in tank.
Design O-ring seal baffle plate assembly 4 between sensor flange dish lower surface and binding nut adopts 2 dog screws, 9 location and anti-rotations, is used to protect axial sealing ring 8.
Body 2 is provided with round boss 10, both has been used for the ring flange location, fastening center of effort during again as the assembly flange dish.The body lower end is provided with 1 square boss 11, is used for connector mounting, fixation of sensor body 2 when being used to tighten binding nut 5 again.Except square boss 11, other part-structures of body 2 are circular configuration.
Electrophotosensitive head 1, body 2 and ring flange 3 all adopt rust-preventing aluminum alloy (5A06), and binding nut 5 adopts duralumin, hard alumin ium alloy (2A12), and O-ring seal baffle plate assembly 4 adopts stainless steel material (1Cr18Ni9Ti).
Sensor decomposes when installing, and sensor body assembly passes in tank earlier, outside tank, carries out assembly manipulation.The fitting operation step is following:
1) screws off sensor binding nut 5, removal O-ring seal baffle plate assembly 4.
2) ring flange 3 is deviate from from body 2.
3) two radial direction seal rings 7 are packed in the body seal groove.
4) evenly smear very thin one deck railway grease at radial direction seal ring 7, ring flange 3 inwalls, smooth and easy to guarantee the subsequent installation process.
5) the body assembly passes in tank.
6) ring flange 3 is packed into from body 2 lower ends, both hands fasten body boss 10 and ring flange 3 in the orientation of symmetry, push ring flange 3, fit basically until two interfaces.
7) bolt (band insurance hole) with 8 M8 is fixed on ring flange 3 on the casing.
8) by Fig. 2 axial sealing ring 8, O-ring seal baffle plate assembly 4, binding nut 5 are installed.
9) fasten the square platform 11 of sensor lower end, fix sensor body 2, binding nut 5 screws up with a wrench.
10) binding nut 5 and the set bolt on the ring flange 3 are stamped insurance with stainless steel wire.
The content of not doing to describe in detail in the utility model instructions belongs to those skilled in the art's known technology.
Claims (3)
1. split type photoelectric liquid level sensor that can decompose installation; It is characterized in that: comprise Electrophotosensitive head, body, ring flange, O-ring seal baffle plate assembly, binding nut; Electrophotosensitive head and body weld together, and body passes ring flange, with binding nut ring flange and body are fixed together; Be provided with the O-ring seal baffle plate assembly between described binding nut and the ring flange lower surface, ring flange is fixed through screw and outside tank.
2. a kind of split type photoelectric liquid level sensor that decomposes installation according to claim 1; It is characterized in that: take the sealing of two pass radial direction seal ring between described body and the ring flange, seal with axial sealing ring in ring flange lower surface and body junction.
3. a kind of split type photoelectric liquid level sensor that decomposes installation according to claim 1 is characterized in that: described body lower end is provided with when being used to tighten binding nut the fixedly square boss of body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120573678 CN202453040U (en) | 2011-12-29 | 2011-12-29 | Detachably installed split photoelectrical liquid level sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120573678 CN202453040U (en) | 2011-12-29 | 2011-12-29 | Detachably installed split photoelectrical liquid level sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202453040U true CN202453040U (en) | 2012-09-26 |
Family
ID=46868897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120573678 Expired - Lifetime CN202453040U (en) | 2011-12-29 | 2011-12-29 | Detachably installed split photoelectrical liquid level sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202453040U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105547415A (en) * | 2015-12-15 | 2016-05-04 | 北京理工大学 | LNG liquid level measurement device |
| CN110649429A (en) * | 2018-06-26 | 2020-01-03 | 北京自动化控制设备研究所 | Simple anti-loosening device for SMA connector |
-
2011
- 2011-12-29 CN CN 201120573678 patent/CN202453040U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105547415A (en) * | 2015-12-15 | 2016-05-04 | 北京理工大学 | LNG liquid level measurement device |
| CN110649429A (en) * | 2018-06-26 | 2020-01-03 | 北京自动化控制设备研究所 | Simple anti-loosening device for SMA connector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120926 |
|
| CX01 | Expiry of patent term |