CN214398163U - Improved large-compensation elastic piece type primary sealing structure - Google Patents
Improved large-compensation elastic piece type primary sealing structure Download PDFInfo
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- CN214398163U CN214398163U CN202120330946.XU CN202120330946U CN214398163U CN 214398163 U CN214398163 U CN 214398163U CN 202120330946 U CN202120330946 U CN 202120330946U CN 214398163 U CN214398163 U CN 214398163U
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Abstract
The utility model discloses an improved large compensation spring plate type primary sealing structure, which comprises a film pressing steel plate, a sealing film, a sliding steel plate, an upper adapter and a lower adapter; the upper adapter and the lower adapter are respectively fixed bosses surrounding the peripheral sides of the floating disc, the film pressing steel plate, the sealing film and the sliding steel plate are sequentially overlapped from inside to outside, one end of the film pressing steel plate is fixed at the end of the upper adapter and is in arc-shaped bending to be in contact with the annular inner wall of the storage tank wall to form a sealing structure, and the other end of the film pressing steel plate is fixed at the end of the lower adapter; the bottom end of the sliding steel plate is stopped below the contact surface of the sliding steel plate and the storage tank wall, and only the film pressing steel plate and the sealing film extend and are fixed at the end of the lower adapter; the lower adapter and the side wall of the floating disc need to be in full-welding airtight connection, and the welding position is above the liquid level. The utility model discloses can solve big compensation shell fragment formula and seal because it is not sealed that the immersion fluid is complete, and then when beginning to put into use, have certain potential safety hazard, need carry out the nitrogen gas replacement in initial stage, bring inconvenient class of technical problem for the operation.
Description
Technical Field
The utility model relates to an improved technology of a floating plate sealing structure of a floating roof oil storage tank.
Background
With the upsizing of oil storage tanks and oil depots, the requirement on the floating disc sealing of the floating-roof oil storage tank is higher and higher. According to the regulation of the national standard GB50341, the error of +/-100 mm of a floating disc gap can be compensated by one-time sealing, and the existing one-time sealing is largely used by a rubber bag type sealing. Along with the popularization of large-scale storage tanks, the proportion of the large-scale storage tanks of newly-built storage tanks is more and more, the large-scale storage tanks have the characteristics of occupying a small area, operating stably and occupying a small number of people, but the edge sealing error of the large-scale storage tanks is often larger and is often larger than +/-100 mm, the original rubber bag type sealing can not meet the requirements, so in recent years, the large compensation elastic sheet type sealing is greatly applied, the large compensation elastic sheet type sealing has the characteristics of large compensation amount, long service life and the like, and good effects are generated in the use of the years.
However, according to the use experience of the years, the large compensation spring sheet type seal has the self defect that the spring sheet type seal is not a full immersion liquid seal, has certain potential safety hazard when being put into use, needs to be replaced by nitrogen in the initial stage, and brings inconvenience to the operation.
Therefore, a seal which not only retains the characteristics of large compensation amount and long service life of the elastic sheet type seal, but also belongs to a full immersion liquid design is needed at present.
Now, the large compensation spring sheet type sealing structure is shown in fig. 1 and 2 and is composed of the following parts: a sliding steel plate, a sealing film and a film pressing steel plate.
1. Pressed film steel plate
The laminated steel plate is composed of processed elastic steel plates, and in order to ensure the sealing reliability, a whole sealing gasket is respectively arranged on the upper surface and the lower surface of the laminated steel plate.
2. Sealing film
The sealing film is made of a whole oil-resistant rubber, and the seam of the sealing film is treated by a hot welding process.
3. Sliding steel plate
The sliding steel plate is composed of wear-resistant steel plates, and a sealing gasket is arranged above the sliding steel plate.
Its advantage is:
1. designing under liquid: the large compensation spring plate type sealing is adopted, the primary sealing film is designed to be more than 100mm below the liquid level, and the sealing effect is good;
2. the compensation range is large: the compensation range can be between-100 and +300mm or even larger, and the close fit between the compensation range and the tank wall can be ensured at any time.
3. The service life is long: the large compensation spring piece type sealing seal is mainly made of stainless steel spring pieces and PTFE films, has the characteristics of corrosion resistance and long service life, and has the service life of more than 20 years which is far superior to that of the conventional rubber capsule type seal (5-8 years).
The disadvantages are as follows:
1. non-immersion liquid design: the large compensation spring plate type sealing is designed to be non-immersion liquid, and a large amount of gas phase space is arranged under the sealing;
2. the initial oil inlet safety is poor: due to the existence of the gas phase space, when oil is fed initially, oil gas in the gas phase space is within the explosion limit for a period of time, and at the moment, a great safety accident can be caused as long as sparks are generated due to static electricity or friction;
3. the initial application is complicated: in order to reduce safety accidents, when the large-compensation spring piece type seal is put into use at the initial stage, nitrogen gas replacement needs to be carried out on gas above an oil surface so as to ensure the safety, so that the production operation procedure is complicated, and the use cost is increased.
Disclosure of Invention
The utility model aims at providing a seal structure is once carried out to big compensation shell fragment formula of improved generation to solve big compensation shell fragment formula and seal because not the complete immersion fluid is sealed, and then when beginning to put into use, have certain potential safety hazard, need carry out the nitrogen gas replacement in initial stage, bring inconvenient class of technical problem for the operation.
In order to achieve the above purpose, the technical solution adopted by the present invention is as follows:
an improved large compensation spring piece type primary sealing structure comprises a film pressing steel plate, a sealing film, a sliding steel plate, an upper adapter and a lower adapter; the upper adapter and the lower adapter are respectively fixed bosses surrounding the peripheral sides of the floating disc, the film pressing steel plate, the sealing film and the sliding steel plate are sequentially overlapped from inside to outside, one end of the film pressing steel plate is fixed at the end of the upper adapter and is in arc-shaped bending to be in contact with the annular inner wall of the storage tank wall to form a sealing structure, and the other end of the film pressing steel plate is fixed at the end of the lower adapter; the outer sliding steel plate is of a structure with a plurality of vertical edges overlapped, the bottom end of the sliding steel plate is stopped below the contact surface of the sliding steel plate and the storage tank wall, and only the film pressing steel plate and the sealing film extend and are fixed at the end of the lower adapter; the film pressing steel plate is formed by arranging a plurality of vertical sheets at intervals; the lower adapter and the side wall of the floating disc need to be in full-welding airtight connection, and the welding position is above the liquid level.
The film pressing steel plate consists of two parts, wherein one part is from an upper adapter to the lower part of a contact section of the side wall of the storage tank and is called an outer elastic sheet; the other part is from the lower adapter to the lower part of the contact section of the side wall of the storage tank and is called an inner elastic sheet.
Sealing strips are arranged at the mounting ends of the sealing membrane and the lower adapter, namely the upper surface and the lower surface of the bent horizontal section of the sealing membrane, a flat pad is arranged on the side of the nut, and the end parts of the sealing membrane and the outer elastic sheet of the film pressing plate are tightly pressed with the lower adapter through bolts to form an airtight connecting structure.
The utility model discloses an advantage and positive effect:
1. design of full immersion liquid
The utility model discloses original big compensation shell fragment formula is sealed to have changed structure for new shell fragment formula is sealed to be the design of soaking liquid entirely, has eliminated the gas phase space.
2. Has high safety
The design of the depth of the immersion liquid is different from the original gas phase space, so that the safety is greatly improved during initial application.
3. Shallow infusion design
The utility model discloses in, the inferior sealing membrane receives ascending buoyancy of liquid after the feed liquor, can make the seal membrane upwards float partly, but because the combined action of inside and outside shell fragment, still keeps the immersion fluid characteristic, the immersion fluid degree of depth can be more shallow, and the buoyancy of production is smaller, and is less to the whole buoyancy influence of floating plate, is favorable to the stability of floating plate.
4. Increase the wall-sticking performance of the original one-time sealing
The utility model discloses a seal membrane receives the compression after can the feed liquor, can cause the inner space to reduce like this, and pressure increase makes the membrane receive a pressure on the lateral wall for the adherence performance of membrane becomes good, and sealed effect is better, reveals more lowly.
Drawings
Fig. 1 is a schematic view of a conventional large compensation leaf spring type sealing structure.
Fig. 2 is a partially enlarged view a of fig. 1.
Fig. 3 is a schematic structural diagram of the present invention.
Fig. 4 is a partial structural view at the extended seal structure of fig. 3.
Fig. 5 is a partial structural schematic view at the lower adapter of fig. 3.
Fig. 6 is a schematic view of the lower adapter installation position.
Fig. 7 is a schematic view of the reinforcing stress of the outer supporting elastic sheet on the inner wall of the storage tank.
Numbering in the figures: 1. the sealing device comprises a sealing film, 1-1 parts of an extended sealing film, 2 parts of a sliding steel plate, 3 parts of a film pressing steel plate, 3-1 parts of a supporting outer elastic sheet, 3-2 parts of a supporting inner elastic sheet, 4 parts of a gas phase space, 5 parts of a liquid level position, 6 parts of an upper mounting adapter, 7 parts of a closed space, 8 parts of a two-layer sealing gasket, 9 parts of a flat gasket, 10 parts of a lower mounting adapter.
Detailed Description
The structure of the utility model is shown in fig. 3, 4 and 5, and the improved large compensation spring piece type primary sealing structure comprises a film pressing steel plate, a sealing film, a sliding steel plate, an upper adapter and a lower adapter; the upper adapter and the lower adapter are respectively fixed bosses surrounding the peripheral sides of the floating disc, the film pressing steel plate, the sealing film and the sliding steel plate are sequentially overlapped from inside to outside, one end of the film pressing steel plate is fixed at the end of the upper adapter and is in arc-shaped bending to be in contact with the annular inner wall of the storage tank wall to form a sealing structure, and the other end of the film pressing steel plate is fixed at the end of the lower adapter; the outer sliding steel plate is of a structure with a plurality of vertical edges overlapped, the bottom end of the sliding steel plate is stopped below the contact surface of the sliding steel plate and the storage tank wall, and only the film pressing steel plate and the sealing film extend and are fixed at the end of the lower adapter; the film pressing steel plate is formed by arranging a plurality of vertical sheets at intervals; the lower adapter and the side wall of the floating disc need to be in full-welding airtight connection, and the welding position is above the liquid level. The sliding steel plates are a plurality of steel plates, the edges of the steel plates are pressed one by one, and the width of each steel plate is about 300MM generally. The lamination plates are also one-by-one, generally 300MM wide and are mounted at 200MM intervals.
The film pressing steel plate consists of two parts, wherein one part is from an upper adapter to the lower part of a contact section of the side wall of the storage tank and is called an outer elastic sheet; the other part is from the lower adapter to the lower part of the contact section of the side wall of the storage tank and is called an inner elastic sheet.
Sealing strips are arranged at the mounting ends of the sealing membrane and the lower adapter, namely the upper surface and the lower surface of the bent horizontal section of the sealing membrane, a flat pad is arranged on the side of the nut, and the end parts of the sealing membrane and the outer elastic sheet of the film pressing plate are tightly pressed with the lower adapter through bolts to form an airtight connecting structure.
The film pressing steel plate is composed of an elastic steel plate after treatment. The sealing membrane is composed of a whole piece of oil-resistant rubber, and the seam of the sealing membrane is treated by a hot welding process. The sliding steel plate is composed of wear-resistant steel plates.
The utility model discloses sealed improvement of having carried out to current big compensation shell fragment formula, kept the sealed advantage of original compensation shell fragment formula, changed its original non-immersion fluid design, gained better effect. The utility model discloses in, the sealed seal membrane that will have big compensation shell fragment formula now has carried out the extension, then has increased a lower part in the below of original adapter and has been the adapter, fixes the lower extreme of seal membrane on the lower part adapter. Like this, rely on the effect of seal membrane, wrap up original gas phase space, seal meteorological space, then solved original gas phase space problem, in order to guarantee leveling of membrane and can not break away from the liquid level behind the feed liquor, increased the membrane and supported interior shell fragment and pushed down the membrane, improved original membrane preforming simultaneously.
In order to ensure the air tightness of the sealing film and the lower part of the mounting adapter, sealing strips are mounted on the upper surface and the lower surface of the sealing film and are compressed by bolts, so that the air tightness of the lower part is ensured.
Simultaneously, in order to ensure that the rear end of the sealing film cannot cause oil to enter the sealing film due to long-term immersion leakage of the sealing strip, the welding position of the lower adapter is above the liquid level, and the adapter and the side wall of the floating disc need to be fully welded to be airtight during welding. In the design, the design of more than 100mm above the liquid level is adopted, and the specific position is shown in figure 6.
As shown in fig. 7. When the immersion fluid, the seal membrane receives ascending pressure, for the immersion fluid degree of depth of assurance membrane, needs the seal membrane to support the shell fragment and pushes down the membrane, just so needs the membrane backing sheet by certain intensity, and the seal membrane supports except that the lower part atress of outer shell fragment, also has the side of guarantee membrane to press close to the jar wall.
The utility model discloses an installation method as follows:
A. installing the lower end of the sealing film and the sealing film support inner elastic sheet, installing the sealing film on the lower adapter, arranging a layer of sealing gasket on each sealing film, and then pressing the sealing films tightly by using bolts.
B. The sealing film is arranged to support the outer elastic sheet, and the upper part and the lower part of the outer elastic sheet are respectively provided with a layer of sealing gasket.
C. The sealing film supporting outer elastic sheet and the sealing film supporting inner elastic sheet are connected through bolts.
D. And (3) mounting the upper end of the sealing membrane to an upper adapter, and adding a sealing gasket on the upper part of the sealing membrane.
E. And installing an outermost sliding plate, installing an anti-collision baffle and fastening an installation bolt, and thus finishing the improved elastic sheet type sealing installation.
Claims (3)
1. An improved large-compensation elastic piece type primary sealing structure is characterized by comprising a film pressing steel plate, a sealing film, a sliding steel plate, an upper adapter and a lower adapter; the upper adapter and the lower adapter are respectively fixed bosses surrounding the peripheral sides of the floating disc, the film pressing steel plate, the sealing film and the sliding steel plate are sequentially overlapped from inside to outside, one end of the film pressing steel plate is fixed at the end of the upper adapter and is in arc-shaped bending to be in contact with the annular inner wall of the storage tank wall to form a sealing structure, and the other end of the film pressing steel plate is fixed at the end of the lower adapter; the outer sliding steel plate is of a structure with a plurality of vertical edges overlapped, the bottom end of the sliding steel plate is stopped below the contact surface of the sliding steel plate and the storage tank wall, and only the film pressing steel plate and the sealing film extend and are fixed at the end of the lower adapter; the film pressing steel plate is formed by arranging a plurality of vertical sheets at intervals; the lower adapter and the side wall of the floating disc need to be in full-welding airtight connection, and the welding position is above the liquid level.
2. The improved large compensation elastic piece type primary sealing structure as claimed in claim 1, wherein the laminated steel plate is composed of two parts, one part is from the upper adapter to the lower part of the contact section of the side wall of the storage tank, and is called an outer elastic piece; the other part is from the lower adapter to the lower part of the contact section of the side wall of the storage tank and is called an inner elastic sheet.
3. An improved large compensation elastic piece type primary sealing structure as claimed in claim 1, wherein sealing strips are installed on the upper and lower surfaces of the mounting end of the sealing membrane and the lower adapter, i.e. the bending horizontal section of the sealing membrane, and flat pads are installed on the nut side, and the end of the sealing membrane and the end of the outer elastic piece of the pressure membrane plate are pressed tightly with the lower adapter through bolts to form an airtight connection structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120330946.XU CN214398163U (en) | 2021-02-05 | 2021-02-05 | Improved large-compensation elastic piece type primary sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120330946.XU CN214398163U (en) | 2021-02-05 | 2021-02-05 | Improved large-compensation elastic piece type primary sealing structure |
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| Publication Number | Publication Date |
|---|---|
| CN214398163U true CN214398163U (en) | 2021-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120330946.XU Active CN214398163U (en) | 2021-02-05 | 2021-02-05 | Improved large-compensation elastic piece type primary sealing structure |
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| Country | Link |
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| CN (1) | CN214398163U (en) |
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2021
- 2021-02-05 CN CN202120330946.XU patent/CN214398163U/en active Active
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