CN203674656U - Low-temperature sealing pipeline - Google Patents
Low-temperature sealing pipeline Download PDFInfo
- Publication number
- CN203674656U CN203674656U CN201420064704.0U CN201420064704U CN203674656U CN 203674656 U CN203674656 U CN 203674656U CN 201420064704 U CN201420064704 U CN 201420064704U CN 203674656 U CN203674656 U CN 203674656U
- Authority
- CN
- China
- Prior art keywords
- seal
- pipeline
- arm
- sealing
- ferrule fitting
- 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
- 238000007789 sealing Methods 0.000 title claims abstract description 46
- 238000010276 construction Methods 0.000 claims description 33
- 238000005452 bending Methods 0.000 claims description 5
- 230000003467 diminishing effect Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 11
- 239000007789 gas Substances 0.000 abstract description 6
- 239000007792 gaseous phase Substances 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- -1 polytetrafluoroethylene Polymers 0.000 description 3
- 230000008016 vaporization Effects 0.000 description 3
- 238000009834 vaporization Methods 0.000 description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 241000743339 Agrostis Species 0.000 description 1
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
Abstract
The utility model discloses a low-temperature sealing pipe, which comprises a branch pipe, a first sealing structure, a second sealing structure and a pipe, wherein the first sealing structure and the second sealing structure are respectively arranged on the upper end and lower end of the branch pipe for a cable to pass through and press the external circular surface of the cable; and the lower end of the pipe is connected with the second sealing structure, and the upper end is connected with a wiring base. The low-temperature sealing pipeline has the advantages that: two stages of sealing structures are provided, a small amount of LNG overflows at the first sealing structure, and the second sealing structure is used for sealing the small amount of overflowed LNG in the branch pipe, so as to avoid the LNG gas leakage when low-temperature LNG liquid enters a gaseous phase tube; and the sealing structures seal the integral cable, can prevent the normal operation of a liquid level transmitter from being affected since connecting parts are poor in contact or in short circuit in low temperature environment when the cable is subjected to segmented sealing.
Description
Technical field
The utility model relates to a kind of sealing device, relates in particular to a kind of sealing pipeline.
Background technology
Along with the development of emerging energy, the use of LNG becomes the problem of people's growing interest.Automobile-used LNG in use, need to monitor the liquid level of LNG, and this need arrange liquid level sensor in LNG vehicle-mounted bottle, and the signal that liquid level sensor monitors is passed to fluid level transmitter by data transmission link.Fluid level transmitter is positioned at the outside of LNG vehicle-mounted bottle, and this requires sealing between data transmission link and LNG vehicle-mounted bottle bottle wall.
Current, adopt sealing pipeline to sealing between data transmission link and LNG vehicle-mounted bottle bottle wall.
But conventional seals pipeline adopts single sealing means, only there is a hermetically-sealed construction, in the time of low temperature, there will be leakage, gas leak phenomenon, cause pipeline frosting, freeze, cause existing in running car potential safety hazard.Meanwhile, LNG leaks, and affects the working life of transmitter, causes the measurement of liquid level gauge inaccurate.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of sealing effectiveness better low temperature seal pipeline.
The purpose of this utility model is achieved through the following technical solutions:
A kind of low temperature seal pipeline, comprise arm, be respectively arranged at arm lower end and upper end pass and compress the first hermetically-sealed construction and second hermetically-sealed construction of cable periphery for cable; Also comprise lower end and the pipeline that the second hermetically-sealed construction is connected and upper end is connected with junction block.
The utility model is, two-stage hermetically-sealed construction is set, having a small amount of LNG at the first hermetically-sealed construction place overflows, the second hermetically-sealed construction is for being sealed in arm by a small amount of LNG overflowing, pipeline frosting while avoiding low temperature, icing situation occur, can avoid a small amount of LNG overflowing to affect the normal work of fluid level transmitter, make liquid level accuracy of detection higher simultaneously.
Further, described the first hermetically-sealed construction comprises bottom sealing socket, lower ferrule fitting and O RunddichtringO; Bottom sealing socket is placed on arm, and bottom sealing socket comprises the connecting cylinder being connected with arm and the stationary magazine creel being connected with connecting cylinder, between stationary magazine creel and the outer surface of arm, has gap, and the inner surface of stationary magazine creel is provided with internal thread; The outer surface of lower ferrule fitting is provided with external screw thread, and lower ferrule fitting inserts in described gap and with stationary magazine creel and is threaded; The inner surface of lower ferrule fitting is provided with spacing preiection, and O RunddichtringO is arranged between spacing preiection and the lower end of described arm.
Further, described the second hermetically-sealed construction comprises upper seal support, seal, upper ferrule fitting and compressing member; Upper seal support is placed on pipeline, and upper seal support comprises the connecting cylinder being connected with pipeline and the stationary magazine creel being connected with connecting cylinder, and the inner surface of stationary magazine creel is provided with internal thread; The lower end of upper ferrule fitting is connected with arm, and the upper end outer surface of upper ferrule fitting is provided with external screw thread, and the upper end of upper ferrule fitting is threaded with stationary magazine creel; The inside of upper ferrule fitting offers annular seal space, the lower end of annular seal space is the diminishing tilting section of diameter from top to bottom, seal is arranged in annular seal space, the lower end shape of seal is corresponding with tilting section, the upper end of seal is the rake that diameter reduces gradually from bottom to up, offers sealing through hole in seal; Compressing member is tubulose and is connected with the bottom of described pipeline, and the bottom of compressing member offers the cavity corresponding with rake shape, and rake is arranged in cavity.
Further, described arm is bending tube.
LNG vehicle-mounted bottle installation site is very limited, and arm is set to bending tube can be convenient to installation of the present utility model.
Further, the dogleg section of described arm is fillet.
The dogleg section of arm is fillet, can increase the inner space of arm, makes a small amount of LNG vaporization of overflowing from the first hermetically-sealed construction.LNG fluid temperature is-162 degree, and sensor wire is polytetrafluoroethylmaterial material, and polytetrafluoroethylene amount of contraction in the time that-162 spend is larger, cannot seal, so LNG vaporization need to be made its intensification be greater than-80 degree, could realize effective sealing.
Further, described arm 90-degree bent.
Further, described pipeline is bellows.
In sum, advantage of the present utility model and beneficial effect are:
1. two-stage hermetically-sealed construction is set, having a small amount of LNG at the first hermetically-sealed construction place overflows, the second hermetically-sealed construction is for being sealed in arm by a small amount of LNG overflowing, pipeline frosting while avoiding low temperature, icing situation occur, can avoid a small amount of LNG overflowing to affect the normal work of fluid level transmitter, make liquid level accuracy of detection higher simultaneously;
Sealing structure is by whole cable sealing, can avoid cable segmented seal, and link member loose contact or short circuit under low temperature environment, affect the normal work of fluid level transmitter;
2. arm is bending tube, can make the utility model can be mounted in the LNG vehicle-mounted bottle installation site of narrow space;
3. the dogleg section of arm is fillet, can increase the inner space of arm, makes a small amount of LNG vaporization of overflowing from the first hermetically-sealed construction.
Accompanying drawing explanation
In order to be illustrated more clearly in embodiment of the present utility model, will be briefly described describing the required accompanying drawing of using in the utility model embodiment below.Apparent, the accompanying drawing in the following describes is only some embodiment that record in the utility model, for a person skilled in the art, in the situation that not paying creative work, can also, according to accompanying drawing below, obtain other accompanying drawing.
Fig. 1 is structural representation of the present utility model;
Wherein, the parts title that Reference numeral is corresponding is as follows:
1-upper seal support, 2-seal, the upper ferrule fitting of 3-, 4-pipeline, 5-junction block, 6-bottom sealing socket, ferrule fitting under 7-, 8-O RunddichtringO, 9-arm, 10-compressing member, 21-seals through hole, 61-connecting cylinder, 62-stationary magazine creel, 71-spacing preiection, 101-connecting cylinder, 102-stationary magazine creel.
Embodiment
In order to make those skilled in the art understand better the utility model, below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out to clear, complete description.Apparent, embodiment described below is only the part in the utility model embodiment, rather than all.The embodiment recording based on the utility model, other all embodiment that those skilled in the art obtain in the situation that not paying creative work, all in the scope of the utility model protection.
Embodiment 1:
As described in Figure 1, a kind of low temperature seal pipeline, comprise arm 9, be respectively arranged at arm 9 lower ends and upper end pass and compress the first hermetically-sealed construction and second hermetically-sealed construction of cable periphery for cable; Also comprise the pipeline 4 that lower end is connected with the second hermetically-sealed construction and upper end is connected with junction block 5.
The present embodiment in use its lower end is connected with LNG vehicle-mounted bottle, the cable of the liquid level sensor in LNG vehicle-mounted bottle runs through LNG vehicle-mounted bottle and enters the present embodiment, then through the first hermetically-sealed construction, arm 9, the second hermetically-sealed construction and pipeline 4, connect in fluid level transmitter at junction block 5.
The present embodiment is, two-stage hermetically-sealed construction is set, having a small amount of LNG at the first hermetically-sealed construction place overflows, the second hermetically-sealed construction is for being sealed in arm 9 by a small amount of LNG overflowing, pipeline frosting while avoiding low temperature, icing situation occur, can avoid a small amount of LNG overflowing to affect the normal work of fluid level transmitter, make liquid level accuracy of detection higher simultaneously.
Embodiment 2:
The present embodiment, on the basis of embodiment 1, is further described the first hermetically-sealed construction.
As shown in Figure 1, described the first hermetically-sealed construction comprises bottom sealing socket 6, lower ferrule fitting 7 and O RunddichtringO 8; Bottom sealing socket 6 is placed on arm 9, and bottom sealing socket 6 comprises the connecting cylinder 61 being connected with arm 9 and the stationary magazine creel 62 being connected with connecting cylinder 61, between stationary magazine creel 62 and the outer surface of arm 9, has gap, and the inner surface of stationary magazine creel 62 is provided with internal thread; The outer surface of lower ferrule fitting 7 is provided with external screw thread, and lower ferrule fitting 7 inserts in described gap and with stationary magazine creel 62 and is threaded; The inner surface of lower ferrule fitting 7 is provided with spacing preiection 71, and O RunddichtringO 8 is arranged between spacing preiection 71 and the lower end of described arm 9.
Bottom sealing socket 6 is threaded with lower ferrule fitting 7, by spacing preiection 71 and the bottom of arm 9, O RunddichtringO 8 is compressed and makes O RunddichtringO 8 that radial expansion occur, thereby O RunddichtringO 8 is pressed on the cable of transducer, realizes the object of sealing.
The first hermetically-sealed construction is mainly to stop cryogenic liquid to introduce sealing pipeline, allows a small amount of gas to enter sealing pipeline, so the first hermetically-sealed construction can adopt relatively simple structure to realize.
Embodiment 3:
The present embodiment, on the basis of embodiment 1 or 2, is further described the second hermetically-sealed construction.
Described the second hermetically-sealed construction comprises upper seal support 1, seal 2, upper ferrule fitting 3 and compressing member 10; Upper seal support 1 is placed on pipeline 4, and upper seal support 1 comprises the connecting cylinder 101 being connected with pipeline 4 and the stationary magazine creel 102 being connected with connecting cylinder 101, and the inner surface of stationary magazine creel 102 is provided with internal thread; The lower end of upper ferrule fitting 3 is connected with arm 9, and the upper end outer surface of upper ferrule fitting 3 is provided with external screw thread, and the upper end of upper ferrule fitting 3 is threaded with stationary magazine creel 102; The inside of upper ferrule fitting 3 offers annular seal space, the lower end of annular seal space is the diminishing tilting section of diameter from top to bottom, seal 2 is arranged in annular seal space, the lower end shape of seal 2 is corresponding with tilting section, the upper end of seal 2 is the rake that diameter reduces gradually from bottom to up, offers sealing through hole 21 in seal 2; Compressing member 10 is tubulose and is connected with the bottom of described pipeline 4, and the bottom of compressing member 10 offers the cavity corresponding with rake shape, and rake is arranged in cavity.
The cable of transducer passes from sealing through hole 21, and upper ferrule fitting 3 is threaded with upper seal 1, and compressing member 10 is compressed seal 2, thereby makes seal 2 compressed and the cable of transducer is compressed, and realizes the object sealing.
Seal 2 is made up of acrylonitrile-butadiene rubber, carboxylic acid nitriles or polytetrafluoroethylene elastomeric material.
Secondary seal is mainly sealing cryogenic gas, but because LNG gas enters after sealing pipeline, the minimum temperature of arm 9 interior gases is-80 degree left and right, so need to adopt the mode of the cable of seal 2 jam sensors could realize sealing.
Embodiment 4:
As shown in Figure 1, the present embodiment is on the basis of above-mentioned any one embodiment, and described arm 9 is bending tube.
Embodiment 5:
As shown in Figure 1, the present embodiment is on the basis of embodiment 4, and the dogleg section of described arm 9 is fillet.
Embodiment 6:
As shown in Figure 1, the present embodiment on the basis of embodiment 4 or 5, described arm 9 90-degree bents.
Embodiment 7:
As shown in Figure 1, the present embodiment is on the basis of above-mentioned any one embodiment, and described pipeline 4 is bellows.
As mentioned above, just can realize preferably the utility model.
Claims (7)
1. a low temperature seal pipeline, is characterized in that:
Comprise arm (9), be respectively arranged at arm (9) lower end and upper end pass and compress the first hermetically-sealed construction and second hermetically-sealed construction of cable periphery for cable;
Also comprise the pipeline (4) that lower end is connected with the second hermetically-sealed construction and upper end is connected with junction block (5).
2. a kind of low temperature seal pipeline according to claim 1, is characterized in that:
Described the first hermetically-sealed construction comprises bottom sealing socket (6), lower ferrule fitting (7) and O RunddichtringO (8);
Bottom sealing socket (6) is placed on arm (9), bottom sealing socket (6) comprises the connecting cylinder (61) being connected with arm (9) and the stationary magazine creel (62) being connected with connecting cylinder (61), between the outer surface of stationary magazine creel (62) and arm (9), have gap, the inner surface of stationary magazine creel (62) is provided with internal thread;
The outer surface of lower ferrule fitting (7) is provided with external screw thread, and lower ferrule fitting (7) inserts in described gap and with stationary magazine creel (62) and is threaded;
The inner surface of lower ferrule fitting (7) is provided with spacing preiection (71), and O RunddichtringO (8) is arranged between spacing preiection (71) and the lower end of described arm (9).
3. a kind of low temperature seal pipeline according to claim 1, is characterized in that:
Described the second hermetically-sealed construction comprises upper seal support (1), seal (2), upper ferrule fitting (3) and compressing member (10);
It is upper that upper seal support (1) is placed on pipeline (4), and upper seal support (1) comprises the connecting cylinder (101) being connected with pipeline (4) and the stationary magazine creel (102) being connected with connecting cylinder (101), and the inner surface of stationary magazine creel (102) is provided with internal thread;
The lower end of upper ferrule fitting (3) is connected with arm (9), and the upper end outer surface of upper ferrule fitting (3) is provided with external screw thread, and the upper end of upper ferrule fitting (3) is threaded with stationary magazine creel (102);
The inside of upper ferrule fitting (3) offers annular seal space, the lower end of annular seal space is the diminishing tilting section of diameter from top to bottom, seal (2) is arranged in annular seal space, the lower end shape of seal (2) is corresponding with tilting section, the upper end of seal (2) is the rake that diameter reduces gradually from bottom to up, offers sealing through hole (21) in seal (2);
Compressing member (10) is tubulose and is connected with the bottom of described pipeline (4), and the bottom of compressing member (10) offers the cavity corresponding with rake shape, and rake is arranged in cavity.
4. according to a kind of low temperature seal pipeline described in any one in claim 1 ~ 3, it is characterized in that:
Described arm (9) is bending tube.
5. a kind of low temperature seal pipeline according to claim 4, is characterized in that:
The dogleg section of described arm (9) is fillet.
6. a kind of low temperature seal pipeline according to claim 5, is characterized in that:
Described arm (9) 90-degree bent.
7. according to a kind of low temperature seal pipeline described in any one in claim 1 ~ 3, it is characterized in that:
Described pipeline (4) is bellows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420064704.0U CN203674656U (en) | 2014-02-14 | 2014-02-14 | Low-temperature sealing pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420064704.0U CN203674656U (en) | 2014-02-14 | 2014-02-14 | Low-temperature sealing pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203674656U true CN203674656U (en) | 2014-06-25 |
Family
ID=50970911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420064704.0U Expired - Fee Related CN203674656U (en) | 2014-02-14 | 2014-02-14 | Low-temperature sealing pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203674656U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105020395A (en) * | 2015-06-26 | 2015-11-04 | 宁波南车时代传感技术有限公司 | Novel sealing wiring protective sleeve |
-
2014
- 2014-02-14 CN CN201420064704.0U patent/CN203674656U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105020395A (en) * | 2015-06-26 | 2015-11-04 | 宁波南车时代传感技术有限公司 | Novel sealing wiring protective sleeve |
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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: 20140625 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |