CN204981110U - Prevent filling up box level sensor - Google Patents
Prevent filling up box level sensor Download PDFInfo
- Publication number
- CN204981110U CN204981110U CN201520347761.4U CN201520347761U CN204981110U CN 204981110 U CN204981110 U CN 204981110U CN 201520347761 U CN201520347761 U CN 201520347761U CN 204981110 U CN204981110 U CN 204981110U
- Authority
- CN
- China
- Prior art keywords
- breather
- level sensor
- box
- casing
- urea
- 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.)
- Expired - Fee Related
Links
- 239000007788 liquid Substances 0.000 claims abstract description 27
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 96
- 239000004202 carbamide Substances 0.000 claims description 96
- 238000010438 heat treatment Methods 0.000 claims description 10
- 230000000694 effects Effects 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000005429 filling process Methods 0.000 abstract description 2
- 238000005188 flotation Methods 0.000 abstract description 2
- 238000002425 crystallisation Methods 0.000 description 5
- 230000008025 crystallization Effects 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 239000002828 fuel tank Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The utility model discloses a prevent filling up box level sensor, including the sensor fixing base, install in sensor fixing base lower part the upper end of an electron tube, and this electron tube overcoat is equipped with the flotation pontoon that can follow the upper and lower activity of electron tube, its characterized in that run through on the sensor fixing base and set up an air -breather, the air -breather is at the vertical extension that is equipped with in the below of fixing base, when when prevent filling up box level sensor uses with the box cooperation, the air -breather is used for the internal outer atmospheric pressure of balance box to liquid filling maximum in the control box. The liquid condition of spilling over appears in can preventing filling process, need not set up the air -breather on the box that the cooperation was used simultaneously, subtract production technology and the step of having changed the box, saved the cost, do benefit to the transportation of box.
Description
Technical field
The utility model relates to a kind of level sensor, particularly relates to one and prevents filling it up with casing level sensor.
Background technology
Urea box is parts conventional on automobile, and its effect is process vehicle exhaust, makes the national standard that the discharge of vehicle exhaust reaches relevant.In order to balance inside and outside gaseous tension, urea box is all equipped with breather, and this breather generally all adopts sintering to manufacture spiral corrosion-resistant steel connection for bbreather pipe, thus is transporting and easy phenomenon connection for bbreather pipe occurring and fractures in sensor assembling, not only can affect use, use cost also can be caused to increase.
When to urea box filling urea solution, because urea solution density after freezing diminishes, volume increases, therefore do not allow to fill it up with in the process of filling urea solution, once when filling it up with, then the urea cubic expansion that freezes can cause urea box swollen bad, and this situation is in as easy as rolling off a log generation in winter.
The existing processing mode preventing urea solution from filling it up with is provided with perspective window mouth on urea casing, in filling process, operator is had to carry out range estimation to judge whether urea solution is filled it up with, but this range estimation mode not only can be made troubles to operator, and just there will be the situation of filling spilling once operator's carelessness.Certainly also have by controlling the adding amount of urea solution in prior art by the mode increasing the valve that floats at filler opening, but structure is comparatively complicated, control effects is undesirable.
Equally, fuel tank and other casing also can run into identical problem in use.
Utility model content
The purpose of this utility model is to provide one and prevents filling it up with casing level sensor, while balance box external and internal pressure, prevents liquid filling excessive.
In order to solve the problems of the technologies described above, the utility model adopts following technical scheme:
One is anti-fills it up with casing level sensor, with casing with the use of, described sensor comprises permanent seat, the upper end of one electron tube is installed on permanent seat bottom, and be set with outside this electron tube can along the up and down floating drum of electron tube, it is characterized in that described permanent seat runs through and arrange one for balance box inner and outer air pressure, and control the breather of solution filling maximum in casing; Described breather is provided with in the below of permanent seat the extension probeed in casing.
Preferred as one, the extension length of described breather is not less than 10mm.
Preferred as one, described breather is breather pipe.
Further preferred as one, described breather pipe can be that the resistant to corrosion materials such as PP plastic cement, polyethylene, compound resin, silica gel, alloy, corrosion-resistant steel are made.
Preferred as one, described breather is also provided with airfilter on permanent seat top.
Preferred as one, described breather extension is provided with cavity, and it is spherical cursory to establish in cavity; Described cavity upper end is air extractor vent, and described spherical cursory diameter is greater than air extractor vent diameter; Described cavity lower end arranges filter screen.
Further preferred as one, described spherical cursory bottom connects fly rod, and described fly rod is arranged through filter screen.
As a kind of preferred version, the below of described permanent seat is also provided with the pipette, liquid back pipe and the heating pipe that stretch into box house; Described heating pipe is primary Ioops pipe, is arranged on permanent seat, has at least the wall of a part of wall and pipette or liquid back pipe to fit.
As one more preferably scheme, together with described i.e. heat pipe is bundled fitted by spring or heat shrinkage film and pipette or liquid back pipe.
Described in the utility modelly anti-fill it up with casing level sensor, the casings such as urea box, fuel tank, water tank can be coordinated to use.
Now should prevent that filling it up with casing level sensor coordinates urea box to make to be used as specific descriptions:
Under normal condition, the gas inside and outside urea box can keep equilibrium of pressure by breather; When annotating urea solution, filler opening Bonding pressure sensing filling gun, during filling urea solution liquid level contact breather lower end, due to the effect of buoyancy, the flotation gear closed vent device in the breather of promotion, air pressure in urea box increases, sensing is to filling gun, and when continuing filling urea solution, the air pressure in urea box will continue to increase, when pressure reaches the atmospheric pressure value of setting, filling gun jumps rifle to stop filling urea solution automatically.
15% of urea casing internal depth is not less than by the length of setting breather in urea box, just can remain in urea box and have to be greater than expanding space of urea liquid expanding volume, prevent urea box at low ambient temperatures, casing is burst because cold expansion met by urea.
After adopting technique scheme, the utility model has following outstanding advantages:
1. prevent urea box from filling it up with; During filling urea solution, during filling urea solution liquid level contact breather extension lower end, breather is closed, air pressure in urea box increases, pressure sensing is to filling gun, and when continuing filling urea solution, the air pressure in urea box will continue to increase, when pressure reaches the atmospheric pressure value of setting, filling gun jumps rifle to stop filling urea solution automatically.
2. the breather of urea box is integrated on urea sensor, does not need to arrange breather on urea box, simplified production technology and the step of urea box, provided cost savings; Avoid the damage that be arranged on breather urea box on of urea box in transportation simultaneously, be beneficial to transport.
3. be formed with expanding space for urea liquid crystallographic expansion between the lowermost end of breather and the top of urea box, can prevent from bursting urea box because of urea liquid crystallographic expansion by actv..Balance the air pressure inside and outside urea box simultaneously, ensure the sucking-off of urea solution and the smooth and easy of backflow.
4. the extension lower end of breather is provided with cavity, it is spherical cursory to be provided with in cavity, during filling urea solution, cursory under the left and right of buoyancy, the air extractor vent on rising enclosed cavity top, the air pressure in urea box increases, and pressure sensing is to filling gun, when continuing filling urea solution, air pressure in urea box will continue to increase, and when pressure reaches the atmospheric pressure value of setting, filling gun jumps rifle to stop filling urea solution automatically.
5. the spherical cursory fly rod being provided with vertically extension, when urea solution liquid level touches fly rod, cursory rising closed vent hole, can realize the object controlling adding amount, and urea solution can be prevented because of Crystallization Plugging filter screen and cavity.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that the utility model coordinates urea box use;
Fig. 2 is the utility model structural representation;
Fig. 3 is breather section-drawing.
Wherein: 1 be permanent seat, 2 be electron tube, 3 be floating drum, 4 be breather pipe, 5 be cavity, 6 for spherical floating, 7 be air extractor vent, 8 be filter screen, 9 for fly rod, 10 for expanding space, 11 be outer extensions, 12 be pipette, 13 be liquid back pipe, 14 be heating pipe, 15 for airfilter.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated:
See figures.1.and.2, one is anti-fills it up with casing level sensor, comprise permanent seat 1, the upper end of one electron tube 2 is installed on sensor permanent seat 1 bottom, and be set with outside this electron tube 2 can along the up and down floating drum 3 of electron tube, the below of permanent seat 1 is also provided with the pipette 12, liquid back pipe 13 and the heating pipe 14 that stretch into urea box inside; Described heating pipe 14 is primary Ioops pipe, is arranged on permanent seat 1, has at least the wall of a part of wall and pipette 12 or liquid back pipe 13 to fit; Heating pipe 14 is heated by heating pipe, prevents urea solution low temperature crystallization, block each pipe fitting together with being bundled fitted by spring or heat shrinkage film and pipette 12 or liquid back pipe 13; Permanent seat runs through and arranges breather pipe 4, breather pipe 4 is provided with outer extensions 11 on the top of permanent seat 1, and outer extensions 11 is connected with airfilter 15, filters input and output gas, ensures the cleaning entering urea box gas; Breather pipe 4 is provided with extension in the below of permanent seat 1, this liquid level sensor of urea box and urea box with the use of, under normal operating condition, urea solution liquid level is below extension, inside and outside urea box, gas can freely pass through breather pipe 4, balance urea box inner and outer air pressure, makes urea solution smooth and easy when sucking-off and backflow; During filling urea solution, when filling urea solution liquid level reaches the lower end of breather pipe 4 extension, breather pipe 4 is closed, and the air pressure in urea box increases, and pressure sensing is to filling gun, when continuing filling urea solution, air pressure in urea box will continue to increase, and when pressure reaches the atmospheric pressure value of setting, filling gun jumps rifle to stop filling urea solution automatically, urea solution filling maximum in urea box can be controlled, reach the anti-object filled it up with.
Breather pipe 4 is not less than 1/30 of urea casing internal depth at permanent seat 1 with the length of lower part, be generally not less than 10mm, can ensure it is that urea solution is received completely at the cold cubic expansion volume of chance, can not burst urea box.
Breather pipe 4 can be made for resistant to corrosion materials such as PP plastic cement, polyethylene, compound resin, silica gel, alloy, corrosion-resistant steels, the length of breather pipe 4 can carry out cutting according to the concrete degree of depth of urea casing, thus adjustment urea box in expand space 10 size; Expand space 10 with breather pipe length increase and increase.
When using breather pipe as ventilation and prevent the device filled it up with, the accuracy controlling adding amount is not high, when urea solution liquid level of annotating exceedes the bottom of breather pipe, continue filling, urea solution can rise a segment distance in breather pipe, air pressure in urea box just can reach the pressure making filling gun jump rifle, therefore following improvement is done: substitute breather pipe 4 with a breather, breather extension is provided with cavity 5, spherical cursory 6 are established in cavity 5, cavity 5 upper end is air extractor vent 7, spherical cursory 6 diameters are greater than air extractor vent 7 diameter, cavity lower end arranges filter screen 8, filter screen 8 can keep gas inside and outside urea box can free flow, also make spherical cursory 6 when not by departing from cavity 5 when buoyancy simultaneously, the spherical diameter of cursory 6 is greater than the diameter of air extractor vent 7, when filling urea solution, when urea solution liquid level reaches cursory bottom, cursoryly to rise under the effect of buoyancy, continue filling urea solution, spherical cursory 6 can continue to rise until complete closed vent hole 7, thus reach the effect controlling maximum adding amount, the accuracy controlling adding amount is high, sensitive.
Under the environment of low temperature, urea solution crystallization can occur, easily block filter screen, breather is ventilated not smooth, can improve spherical cursory 6, with reference to Fig. 3, spherical cursory 6 are also connected with fly rod 9, and fly rod 9 is arranged through filter screen 8.When annotate urea solution time, when urea solution liquid level reaches fly rod bottom, namely cursory 6 rise, and when urea solution liquid level out of reach is to filter screen 8, cursory 6 can rise closed vent hole 7, thus stop filling, when preventing urea solution contact filter screen, urea solution Crystallization Plugging filter screen; Can also by adjustment fly rod 9 length, adjust in urea box expand space 10 size; Expand space 10 with fly rod 9 length increase and increase.
Implement for urea box in the present embodiment, because urea solution has the characteristic of special corrosive property and easy crystallization, so the anti-of urea box can be suitable for fill it up with casing level sensor, also go for the casing taking up other liquid, such as fuel tank, water tank etc.
Except above preferred embodiment, the utility model also has other embodiment, those skilled in the art can make various change according to the utility model, only otherwise depart from spirit of the present utility model, all should belong to the scope that the utility model claims define.
Claims (8)
1. prevent filling it up with casing level sensor for one kind, with casing with the use of, described sensor comprises permanent seat, the upper end of one electron tube is installed on permanent seat bottom, and be set with outside this electron tube can along the up and down floating drum of electron tube, it is characterized in that described permanent seat runs through and arrange one for balancing urea box inner and outer air pressure, and control the breather of urea filling maximum in urea box;
Described breather is provided with in the below of permanent seat the extension probeed in casing.
2. according to claim 1ly anti-fill it up with casing level sensor, it is characterized in that the length of described extension is not less than 10mm.
3. anti-described in claim 1 or 2 fills it up with casing level sensor, it is characterized in that described breather is breather pipe.
4. according to claim 1ly anti-fill it up with casing level sensor, it is characterized in that described breather is also provided with airfilter on permanent seat top.
5. anti-described in claim 1 or 2 fills it up with casing level sensor, and it is characterized in that described breather extension is provided with cavity, it is spherical cursory to establish in cavity; Described cavity upper end is air extractor vent, and described spherical cursory diameter is greater than air extractor vent diameter; Described cavity lower end arranges filter screen.
6. according to claim 5ly anti-fill it up with casing level sensor, it is characterized in that described spherical cursory bottom connects fly rod, described fly rod is arranged through filter screen.
7. according to claim 1ly anti-fill it up with casing level sensor, it is characterized in that the below of described level sensor permanent seat is also provided with pipette, liquid back pipe and the heating pipe stretching into box house; Described heating pipe is primary Ioops pipe, is arranged on permanent seat, has at least the wall of a part of wall and pipette or liquid back pipe to fit.
8. according to claim 7ly anti-fill it up with casing level sensor, together with it is characterized in that described heating pipe bundlees fitted by spring or heat shrinkage film and feed tube or liquid back pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520347761.4U CN204981110U (en) | 2015-05-26 | 2015-05-26 | Prevent filling up box level sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520347761.4U CN204981110U (en) | 2015-05-26 | 2015-05-26 | Prevent filling up box level sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204981110U true CN204981110U (en) | 2016-01-20 |
Family
ID=55115498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520347761.4U Expired - Fee Related CN204981110U (en) | 2015-05-26 | 2015-05-26 | Prevent filling up box level sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204981110U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108060954A (en) * | 2017-12-06 | 2018-05-22 | 潍柴动力股份有限公司 | A kind of urea liquid level sensor |
| CN109139230A (en) * | 2018-11-01 | 2019-01-04 | 宁波春华汽配有限公司 | A kind of plastic expansion tank expires liquid level and jumps gun apparatus automatically |
-
2015
- 2015-05-26 CN CN201520347761.4U patent/CN204981110U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108060954A (en) * | 2017-12-06 | 2018-05-22 | 潍柴动力股份有限公司 | A kind of urea liquid level sensor |
| CN109139230A (en) * | 2018-11-01 | 2019-01-04 | 宁波春华汽配有限公司 | A kind of plastic expansion tank expires liquid level and jumps gun apparatus automatically |
| CN109139230B (en) * | 2018-11-01 | 2024-01-16 | 宁波春华汽配有限公司 | Automatic full-liquid-level gun-jumping device for plastic expansion water tank |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160120 |