CN220249278U - Positive pressure sealing connection structure of liquid level meter and anti-corrosion liquid level meter - Google Patents
Positive pressure sealing connection structure of liquid level meter and anti-corrosion liquid level meter Download PDFInfo
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- CN220249278U CN220249278U CN202321726852.XU CN202321726852U CN220249278U CN 220249278 U CN220249278 U CN 220249278U CN 202321726852 U CN202321726852 U CN 202321726852U CN 220249278 U CN220249278 U CN 220249278U
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- 239000007788 liquid Substances 0.000 title claims abstract description 105
- 238000007789 sealing Methods 0.000 title claims abstract description 73
- 238000005260 corrosion Methods 0.000 title claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 16
- 230000007797 corrosion Effects 0.000 claims description 4
- -1 polytetrafluoroethylene Polymers 0.000 claims description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 13
- 238000004891 communication Methods 0.000 abstract description 4
- 238000005507 spraying Methods 0.000 description 5
- 238000003825 pressing Methods 0.000 description 3
- 238000005536 corrosion prevention Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
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- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The utility model discloses a positive pressure sealing connection structure of a liquid level meter and an anti-corrosion liquid level meter, and belongs to the field of liquid level meters. The utility model relates to a positive pressure sealing connection structure of a liquid level meter, which comprises a connection seat, a communication pipe and a sealing gasket, wherein the connection seat is fixed on the outer pipe wall of a liquid level meter pipe body; a second outer flanging is formed at the end face of a second inner liner tube in the communicating pipe; the communicating pipe is in threaded connection with the connecting seat, and the sealing gasket is positioned between the first outward turned edge and the second outward turned edge. The sealing reliability of the utility model is ensured by the locking force of the screw threads of the communicating pipe and the connecting seat, the outward flange is easy to form, the sealing is reliable, the connecting operation is simple and convenient, the required connecting and sealing elements are few, the sealing structure and the manufacturing process are very simple, and the production efficiency of the liquid level meter is improved; in addition, each part does not need to be additionally sprayed with anti-corrosion treatment, and the lining material and the sealing gasket have better temperature resistance.
Description
Technical Field
The utility model relates to a liquid level meter, in particular to a positive pressure sealing connection structure of a liquid level meter and an anti-corrosion liquid level meter.
Background
The tetrafluoro lining liquid level meter is a corrosion-proof liquid level meter, which is widely used for medium liquid level detection of equipment such as towers, tanks, grooves, spherical containers, boilers and the like, can realize high sealing and leakage prevention, is suitable for liquid level measurement of high-pressure, high-temperature and corrosive mediums, and has reliable use and good safety. The lining material used in the interior is typically polytetrafluoroethylene and is therefore often referred to as a lined tetrafluoro gauge.
The upper end and the lower end of the tube body of the lining tetrafluoro liquid level meter are generally provided with an upper communicating tube and a lower communicating tube along the lateral direction so as to realize the connection of the liquid level meter and a container, the connection position of the tube body and the upper communicating tube and the lower communicating tube needs to be sealed, and the medium needs to be ensured not to be contacted with the metal tube body, so that the sealing of the connection part between the tube body of the liquid level meter and the communicating tube is a manufacturing difficulty of the lining tetrafluoro liquid level meter. Chinese patent number ZL201210066865.9 discloses a "reverse-pulling sealing device", and it is through the reverse tensioning of cone casting die from the inboard of lining tetrafluoro liquid level gauge and cone pressure-bearing cover, realizes the compaction seal of tetrafluoro pipe turn-ups, has solved the big problem of turn-ups operation degree of difficulty. However, the connecting structure is relatively complex, the required parts are more, and part of the parts are required to be sprayed, the spraying material can be preserved, but the spraying material and the lining material are different, the temperature resistance of the spraying material is poor, the spraying material can only bear the temperature within 130 ℃ generally, the manufacturing process is relatively complex, and the production efficiency is not improved.
At present, there is also a structure of connecting a communicating pipe by compressing the outer side of a pipe positively, which is characterized in that a lining flanging at one end of the communicating pipe is designed into a cone shape, the lining flanging at the position of a pipe body connecting port is designed into a horn shape of a matched type, and the communicating pipe is fixed with the pipe body by utilizing a flange pressing plate and a bolt during connection, so that the corresponding lining flanging is extruded and sealed, and the structure is simpler, but still has the following defects: 1) The horn-shaped flanging at the position of the pipe body connecting port is not easy to ensure, and the matching state of the lining flanging can not be ensured during connection; 2) The communicating pipe is connected with the pipe body by adopting the flange pressing plate, a plurality of bolts are required to be used for locking, the connection operation is complicated, the locking state of the flange pressing plate is required to be matched with the extrusion sealing state of the lining flanging, otherwise, the problems of overpressure or unstable connection of the lining flanging and the like are easy to occur, and therefore, the requirement on the processing precision is high.
Disclosure of Invention
1. Technical problem to be solved by the utility model
The utility model aims to overcome the defects that the sealing structure of the traditional lining tetrafluoro liquid level meter is complex in design, the sealing reliability is not easy to guarantee and the like, and provides a positive pressure sealing connection structure of the liquid level meter and an anti-corrosion liquid level meter, by adopting the technical scheme of the utility model, a communicating pipe is connected on the outer pipe wall of a liquid level meter pipe body through a connecting seat in a threaded manner, and meanwhile, the sealing reliability is guaranteed by the locking force of the communicating pipe and the connecting seat through the inner liner pipe flanging and a sealing gasket; in addition, each part does not need to be additionally sprayed with anti-corrosion treatment, and the lining material and the sealing gasket have better temperature resistance.
2. Technical proposal
In order to achieve the above purpose, the technical scheme provided by the utility model is as follows:
the utility model relates to a positive pressure sealing connection structure of a liquid level meter, which comprises a connection seat, a communication pipe and a sealing gasket, wherein the connection seat is fixed on the outer pipe wall of the liquid level meter pipe body and is communicated with a corresponding connection port of the liquid level meter pipe body; a second lining pipe is arranged in the communicating pipe, and the second lining pipe is turned over to the end face of one end of the communicating pipe to form a second turnup edge; the inner hole of the connecting seat is internally provided with an internal thread, one end of the communicating pipe is provided with an external thread matched with the internal thread, the communicating pipe is in threaded connection with the connecting seat, and the sealing gasket is positioned between the first flanging and the second flanging.
Furthermore, the connecting seat is welded and fixed on the outer pipe wall of the liquid level meter pipe body.
Furthermore, one end of the connecting seat, which is close to the liquid level meter pipe body, is provided with an inner ring table, and the first flanging is wrapped on the step surface of the inner ring table.
Further, the second lining pipe is turned over to the other end face of the communicating pipe to form a third turned-over edge.
Further, the first lining pipe, the second lining pipe and the sealing gasket are made of polytetrafluoroethylene materials.
The utility model relates to an anti-corrosion liquid level meter, which comprises a liquid level meter tube body, wherein a first lining tube is arranged in the liquid level meter tube body, and communicating tubes are respectively arranged at the upper part and the lower part of the liquid level meter tube body by adopting the liquid level meter positive pressure sealing connection structure.
Still further, still be equipped with the loose flange that is used for being connected with the container on the communicating pipe.
Furthermore, the openings at the upper end and the lower end of the liquid level meter tube body are respectively sealed by an upper flange and a lower flange, the first inner lining tube forms end face turnups at the openings at the upper end and the lower end of the liquid level meter tube body, and a tetrafluoro sealing gasket is respectively arranged between the upper flange and the upper end face turnups of the liquid level meter tube body and between the lower flange and the lower end face turnups of the liquid level meter tube body.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the utility model has the following beneficial effects:
(1) The positive pressure sealing connection structure of the liquid level meter comprises a connection seat, a communicating pipe and a sealing gasket, wherein the communicating pipe is connected to the outer pipe wall of a liquid level meter pipe body through threads of the connection seat, and meanwhile, the liquid level meter pipe body and an inner liner pipe in the communicating pipe are sealed through an outward flange and the sealing gasket; in addition, each part does not need to be additionally sprayed with anti-corrosion treatment, and the lining material and the sealing gasket have better temperature resistance;
(2) According to the positive pressure sealing connection structure of the liquid level meter, the connecting seat is welded and fixed on the outer pipe wall of the liquid level meter pipe body, the inner annular table is arranged at one end, close to the liquid level meter pipe body, of the connecting seat, the first outward flange is wrapped on the step surface of the inner annular table, so that a gap between the connecting seat and the liquid level meter pipe body can be sealed, and the inner annular table also increases structural strength, so that sealing connection is more reliable;
(3) According to the positive pressure sealing connection structure of the liquid level meter, the second lining pipe is turned to the end face of the other end of the communicating pipe to form the third turned-out edge, so that sealing connection with a container is facilitated, and the medium is prevented from contacting with the communicating pipe;
(4) According to the anti-corrosion liquid level meter, the upper end and the lower end of the liquid level meter tube body are opened and are respectively sealed through the upper flange and the lower flange, the upper flange and the lower flange are sealed with the liquid level meter tube body through the tetrafluoro sealing gasket, the processing and the manufacturing of the liquid level meter are facilitated, and the liquid level meter is good in sealing performance, and strong in anti-corrosion performance and temperature resistance.
Drawings
FIG. 1 is a schematic cross-sectional view of an anti-corrosive liquid level gauge of the present utility model;
fig. 2 is a schematic view of a partial enlarged structure at a in fig. 1.
Reference numerals in the schematic drawings illustrate:
1. a liquid level meter tube body; 2. a first liner tube; 2-1, a first flanging; 3. a connecting seat; 4. a communicating pipe; 5. a second liner tube; 5-1, a second flanging; 6. a sealing gasket; 7. a looper flange; 8. an upper flange; 9. and a lower flange.
Detailed Description
For a further understanding of the present utility model, the present utility model will be described in detail with reference to the drawings and examples.
Examples (example)
Referring to fig. 1 and 2, a positive pressure sealing connection structure of a liquid level meter according to this embodiment includes a connection seat 3, a communication pipe 4 and a sealing gasket 6, where the connection seat 3 is fixed on an outer pipe wall of a liquid level meter pipe body 1 and is communicated with a corresponding connection port of the liquid level meter pipe body 1, and a first inner liner pipe 2 in the liquid level meter pipe body 1 is turned over from the connection port of the liquid level meter pipe body 1 to an inner side of the connection seat 3 to form a first turned-over edge 2-1; a second lining pipe 5 is arranged in the communicating pipe 4, and the second lining pipe 5 is turned over to the end face of one end of the communicating pipe 4 to form a second turnup edge 5-1; an inner thread is arranged in an inner hole of the connecting seat 3, an outer thread matched with the inner thread is arranged at one end of the communicating pipe 4, the communicating pipe 4 is in threaded connection with the connecting seat 3, and the sealing gasket 6 is positioned between the first outward flange 2-1 and the second outward flange 5-1. Like this, communicating pipe 4 passes through connecting seat 3 to be fixed on the outer wall of liquid level gauge body 1, and threaded connection is simple and convenient to realize sealedly through turn-ups and sealing gasket 6 between first lining pipe 2 and the second lining pipe 5, seal reliability is guaranteed by the screw thread locking power of communicating pipe 4 and connecting seat 3, and the medium is contactless with the metal part, and corrosion resistance is good. Moreover, the flanging is easy to form, the sealing is reliable, the required connecting and sealing elements are few, the sealing structure and the manufacturing process are very simple, and the production efficiency of the liquid level meter is improved; in addition, each part does not need to be additionally sprayed with anti-corrosion treatment, the lining material and the sealing gasket have better temperature resistance, and the temperature resistance can reach 300 ℃.
Further, in the embodiment, the connecting seat 3 is welded and fixed on the outer pipe wall of the liquid level meter pipe body 1, and the fixation is firm and reliable. Referring to fig. 2, an inner ring table is arranged at one end of the connecting seat 3, which is close to the liquid level meter tube body 1, and the first flanging 2-1 is wrapped on the step surface of the inner ring table, so that a gap between the connecting seat 3 and the liquid level meter tube body 1 can be sealed, and the inner ring table also increases the structural strength, so that the sealing connection is more reliable. The second lining pipe 5 is turned over to the other end face of the communicating pipe 4 to form a third turned-over edge, and the third turned-over edge is convenient for sealing connection between the communicating pipe 4 and the container, so that the medium is ensured not to be contacted with the communicating pipe 4. The first liner tube 2, the second liner tube 5 and the sealing gasket 6 are all preferably made of polytetrafluoroethylene materials. The second lining tube 5 can be prefabricated with a tetrafluoro sleeve, is sleeved on the inner side of the connecting seat 3, and is turned over at two ends. Threads are machined on the connecting seat 3 and the communicating pipe 4 in advance, and the requirements on machining precision are not high.
The embodiment also discloses an anti-corrosion liquid level meter. Referring to fig. 1 and 2, the anti-corrosion liquid level meter comprises a liquid level meter pipe body 1, a first lining pipe 2 is arranged in the liquid level meter pipe body 1, and communicating pipes 4 are installed on the upper part and the lower part of the liquid level meter pipe body 1 respectively by adopting the liquid level meter positive pressure sealing connection structure. The communicating pipe 4 is used for being connected with the container to realize the communication between the liquid level meter pipe body 1 and the inner cavity of the container. The communicating pipe 4 is also provided with a looper flange 7 for connecting with the container, thereby facilitating the stable connection of the anti-corrosion liquid level meter and the container.
Further, the openings at the upper end and the lower end of the liquid level meter tube body 1 are respectively sealed by an upper flange 8 and a lower flange 9, the first inner liner tube 2 forms end face turnups at the openings at the upper end and the lower end of the liquid level meter tube body 1, and tetrafluoro sealing gaskets are respectively arranged between the upper flange 8 and the upper end face turnups of the liquid level meter tube body 1 and between the lower flange 9 and the lower end face turnups of the liquid level meter tube body 1. By adopting the structure, the liquid level meter is convenient to process and manufacture, and has good sealing performance, strong corrosion resistance and strong temperature resistance.
Compared with the reverse pulling sealing device disclosed in Chinese patent number ZL201210066865.9, the positive pressure sealing connection structure of the liquid level meter and the anti-corrosion liquid level meter have the following advantages:
1. the required connecting and sealing elements are few, so that the material is saved;
2. no additional spraying corrosion prevention treatment is needed, the internal corrosion prevention materials can be consistent, and the temperature resistance can reach 300 ℃;
3. simplifying the manufacturing process and improving the production efficiency of the liquid level meter.
In summary, according to the positive pressure sealing connection structure of the liquid level meter and the anti-corrosion liquid level meter, the communicating pipe is connected to the outer pipe wall of the liquid level meter pipe body through the connecting seat in a threaded manner, and meanwhile, the liquid level meter pipe body and the inner lining pipe in the communicating pipe are utilized for sealing, the sealing reliability is ensured by the locking force of the threads of the communicating pipe and the connecting seat, the outward flange is easy to form, the sealing is reliable, the connection operation is simple and convenient, the required connecting and sealing elements are few, the sealing structure and the manufacturing process are very simple, and the production efficiency of the liquid level meter is improved; in addition, each part does not need to be additionally sprayed with anti-corrosion treatment, and the lining material and the sealing gasket have better temperature resistance.
The utility model and its embodiments have been described above schematically, without limitation, and the actual construction is not limited to this, as it is shown in the drawings, which are only one of the embodiments of the utility model. Therefore, if one of ordinary skill in the art is informed by this disclosure, a structural manner and an embodiment similar to the technical scheme are not creatively devised without departing from the spirit of the present utility model, and all the structural manners and the embodiment are considered to be within the protection scope of the present utility model.
Claims (8)
1. A positive pressure sealing connection structure of a liquid level meter is characterized in that: the liquid level meter comprises a connecting seat (3), a communicating pipe (4) and a sealing gasket (6), wherein the connecting seat (3) is fixed on the outer pipe wall of a liquid level meter pipe body (1) and is communicated with a corresponding connecting port of the liquid level meter pipe body (1), and a first inner liner pipe (2) in the liquid level meter pipe body (1) is turned from the connecting port of the liquid level meter pipe body (1) to the inner side of the connecting seat (3) to form a first turned-out edge (2-1); a second lining pipe (5) is arranged in the communicating pipe (4), and the second lining pipe (5) is turned to the end face of one end of the communicating pipe (4) to form a second turnup edge (5-1); the inner hole of the connecting seat (3) is internally provided with an internal thread, one end of the communicating pipe (4) is provided with an external thread matched with the internal thread, the communicating pipe (4) is in threaded connection with the connecting seat (3), and the sealing gasket (6) is positioned between the first flanging (2-1) and the second flanging (5-1).
2. The positive pressure sealing connection structure of a liquid level meter according to claim 1, wherein: the connecting seat (3) is welded and fixed on the outer pipe wall of the liquid level meter pipe body (1).
3. The positive pressure sealing connection structure of a liquid level meter according to claim 1, wherein: one end of the connecting seat (3) close to the liquid level meter pipe body (1) is provided with an inner ring table, and the first flanging (2-1) is wrapped on the step surface of the inner ring table.
4. The positive pressure sealing connection structure of a liquid level meter according to claim 1, wherein: the second inner lining pipe (5) is turned to the end face of the other end of the communicating pipe (4) to form a third turned-out edge.
5. The positive pressure sealing connection structure of a liquid level meter according to any one of claims 1 to 4, wherein: the first lining tube (2), the second lining tube (5) and the sealing gasket (6) are made of polytetrafluoroethylene materials.
6. The utility model provides an anticorrosive level gauge, includes level gauge body (1), be equipped with in the level gauge body (1) bushing pipe (2), its characterized in that: the upper part and the lower part of the liquid level meter tube body (1) are respectively provided with a communicating tube (4) by adopting the liquid level meter positive pressure sealing connection structure according to any one of claims 1 to 5.
7. The corrosion resistant level gauge of claim 6, wherein: the communicating pipe (4) is also provided with a looper flange (7) for connecting with the container.
8. The corrosion resistant level gauge of claim 6 or 7, wherein: the liquid level meter is characterized in that the upper end and the lower end of the liquid level meter tube body (1) are opened and are respectively sealed through an upper flange (8) and a lower flange (9), an end face flanging is formed at the upper end and the lower end of the liquid level meter tube body (1) by the first inner liner tube (2), and a tetrafluoro sealing gasket is respectively arranged between the upper flange (8) and the upper end face flanging of the liquid level meter tube body (1) and between the lower flange (9) and the lower end face flanging of the liquid level meter tube body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321726852.XU CN220249278U (en) | 2023-07-04 | 2023-07-04 | Positive pressure sealing connection structure of liquid level meter and anti-corrosion liquid level meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321726852.XU CN220249278U (en) | 2023-07-04 | 2023-07-04 | Positive pressure sealing connection structure of liquid level meter and anti-corrosion liquid level meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220249278U true CN220249278U (en) | 2023-12-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321726852.XU Active CN220249278U (en) | 2023-07-04 | 2023-07-04 | Positive pressure sealing connection structure of liquid level meter and anti-corrosion liquid level meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220249278U (en) |
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2023
- 2023-07-04 CN CN202321726852.XU patent/CN220249278U/en active Active
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