CN113833853B - Seal assembly - Google Patents
Seal assembly Download PDFInfo
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- CN113833853B CN113833853B CN202110984249.0A CN202110984249A CN113833853B CN 113833853 B CN113833853 B CN 113833853B CN 202110984249 A CN202110984249 A CN 202110984249A CN 113833853 B CN113833853 B CN 113833853B
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- Prior art keywords
- flange
- solid
- ceramic plate
- sealing
- annular groove
- Prior art date
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- 238000007789 sealing Methods 0.000 claims abstract description 123
- 239000000919 ceramic Substances 0.000 claims abstract description 98
- 239000007788 liquid Substances 0.000 claims abstract description 74
- 239000011148 porous material Substances 0.000 claims abstract description 33
- 239000007787 solid Substances 0.000 claims abstract description 11
- 230000008859 change Effects 0.000 claims abstract description 9
- 238000006243 chemical reaction Methods 0.000 claims abstract description 7
- 239000011833 salt mixture Substances 0.000 claims description 8
- 150000003839 salts Chemical class 0.000 claims description 7
- 230000007704 transition Effects 0.000 claims description 7
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 6
- 239000000155 melt Substances 0.000 claims description 4
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 claims description 3
- 229910052808 lithium carbonate Inorganic materials 0.000 claims description 3
- 239000012782 phase change material Substances 0.000 claims description 3
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000005868 electrolysis reaction Methods 0.000 description 8
- 238000004891 communication Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011295 pitch Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
- F16J15/102—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/14—Sealings between relatively-stationary surfaces by means of granular or plastic material, or fluid
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The application discloses a sealing assembly, which comprises a ceramic plate, a first flange, a second flange and a solid-liquid sealing medium, wherein the ceramic plate is arranged between the first flange and the second flange; the ceramic wafer is equipped with gas through-hole, and first flange and second flange are equipped with first trompil and second trompil, and gas through-hole forms the passageway of intercommunication with first trompil and second trompil in first direction. The solid-liquid sealing medium is filled at least in the pores and is capable of undergoing a phase change reaction in the pores. When the sealing assembly is used at high temperature, the solid-liquid sealing medium in the pores of the ceramic plate changes phase to be converted from solid state to liquid state, so that wet sealing is formed, the medium in the channel is prevented from leaking from the pores, and the sealing effect is achieved.
Description
Technical Field
The application relates to the field of sealing technology, in particular to a sealing assembly.
Background
The polymer sealing gasket commonly adopted in the water electrolysis equipment in the related art is used as a sealing component, but the polymer sealing gasket has certain requirements on the temperature of the water to be electrolyzed, can only be applied to the water electrolysis equipment at normal temperature, and has certain limitation in application to the water electrolysis equipment at high temperature.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the related art to some extent.
Therefore, the embodiment of the invention provides a sealing assembly which can be applied to high-temperature water electrolysis equipment to achieve the sealing effect.
The sealing component comprises a ceramic plate, wherein the ceramic plate is provided with a gas through hole, the inside of the ceramic plate is provided with a pore, and the pore diameter of the pore is 0.1-1 micron; the ceramic plate is clamped between the first flange and the second flange, and the gas through hole, the first opening and the second opening form a communicated channel relatively in a first direction; the solid-liquid sealing medium is a phase change material, is at least filled in the pores and can undergo a phase change reaction in the pores.
The ceramic plate can be used as a sealing gasket in water electrolysis equipment, and solid-liquid sealing medium capable of undergoing phase change reaction is filled in the pores of the ceramic plate. When the sealing assembly is used at high temperature, the solid-liquid sealing medium in the pores of the ceramic plate changes phase to be converted from solid state to liquid state, so that wet sealing is formed, the medium in the channel is prevented from leaking from the pores, and the sealing effect is achieved.
In some embodiments, an annular first sealed chamber is defined between the ceramic wafer and the first flange, an annular second sealed chamber is defined between the ceramic wafer and the second flange, the first sealed chamber and the second sealed chamber both surround the channel, and the solid-liquid sealing medium is also filled in the first sealed chamber and the second sealed chamber.
In some embodiments, a portion of the solid-liquid sealing medium in a liquid state is capable of entering and filling in the gap between the first flange and the ceramic wafer and the gap between the second flange and the ceramic wafer.
In some embodiments, a side of the first flange adjacent the ceramic plate is provided with an annular groove surrounding the channel, the annular groove and the side of the ceramic plate adjacent the first flange defining the first sealed chamber therebetween.
In some embodiments, a side of the ceramic plate adjacent the first flange is provided with an annular groove surrounding the channel, the annular groove and the side of the first flange adjacent the ceramic plate defining the first sealed chamber therebetween.
In some embodiments, a side of the first flange adjacent to the ceramic plate is provided with a first annular groove surrounding the channel, a side of the ceramic plate adjacent to the first flange is provided with a second annular groove surrounding the channel, and the first annular groove is opposite to the second annular groove and defines the first sealed chamber.
In some embodiments, the solid-liquid sealing medium is a salt mixture that melts to form a molten salt.
In some embodiments, the salt mixture includes 60% -70% molar content of lithium carbonate and 30% -40% molar content of potassium carbonate.
In some embodiments, the solid-liquid sealing medium is solid at ambient temperature.
In some embodiments, the solid-liquid sealing medium has a phase transition temperature of 180 ℃ to 920 ℃.
Drawings
Fig. 1 is a cross-sectional view of an overall structure according to an embodiment of the present application.
Fig. 2 is a schematic structural view of a ceramic wafer according to an embodiment of the present application.
Fig. 3 is a schematic structural view of a first flange according to an embodiment of the present application.
Reference numerals:
the mounting screw 1, the screw cap 2, the first flange 3, the ceramic plate 4, the first sealing chamber 5, the second mounting hole 6, the gas through hole 7, the first opening 8, the second opening 9, the second flange 10, the second sealing chamber 11, the first connecting pipe 12, the second connecting pipe 13, the annular groove 14 and the first mounting hole 15.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
The application discloses seal assembly, including potsherd 4, first flange 3, second flange 10 and solid-liquid sealing medium, be provided with potsherd 4 between first flange 3 and the second flange 10, potsherd 4 presss from both sides and establishes between first flange 3 and second flange 10 promptly.
The ceramic wafer 4 is provided with a gas through hole 7, the first flange 3 and the second flange 10 are provided with a first opening 8 and a second opening 9, and the gas through hole 7 and the first opening 8 and the second opening 9 form a communicating channel in the first direction. The channel is used for the circulation of a sealing medium (gas).
Those skilled in the art will appreciate that ceramic components typically have internal voids that are also interconnected, and that such internal voids can easily lead to leakage of gas within the channel. Thus, in this embodiment, the ceramic sheet 4 has pores inside, and the pore diameter of the pores is 0.1 micrometers to 1 micrometer.
The solid-liquid sealing medium is a phase change material. The solid-liquid sealing medium has a phase transition temperature below which the solid-liquid sealing medium is in a solid state and above which the solid-liquid sealing medium is in a liquid state. The solid-liquid sealing medium is filled at least in the pores of the ceramic sheet 4 and is capable of undergoing a phase change reaction in the pores. Wherein the solid-liquid sealing medium undergoes a phase change reaction in the pores, which means that the solid-liquid sealing medium can be changed from solid state to liquid state or from liquid state to solid state in the pores.
When the sealing component provided by the embodiment of the invention is applied to a high-temperature working condition, the solid-liquid sealing medium phase change in the pores is converted from solid to liquid, and the liquid solid-liquid sealing medium is filled in the pores of the ceramic sheet 4 to form wet sealing, so that the effect of preventing gas in the channel from leaking through the pores is achieved. Therefore, the sealing component provided by the embodiment of the invention has excellent sealing performance under high-temperature working conditions (such as the field of high-temperature water electrolysis equipment).
The solid-liquid sealing medium can be used as a filler to be filled in the pores of the ceramic sheet 4 in the preparation process of the ceramic sheet 4, or the ceramic sheet 4 can be immersed in the liquid solid-liquid sealing medium after the preparation of the ceramic sheet 4 is completed, so that the liquid solid-liquid sealing medium enters and is filled in the pores of the ceramic sheet 4 under the action of capillary effect, if the temperature is reduced below the phase transition temperature, the liquid solid-liquid sealing medium filled in the pores of the ceramic sheet 4 is phase-changed into a solid state, and is used as a filler to be filled in the pores of the ceramic sheet 4, and is phase-changed into a liquid state again in the next high-temperature application, so that wet sealing is realized.
Embodiments of the present application are described in detail below with respect to fig. 1-3.
As shown in fig. 1, the first flange 3 and the ceramic plate 4 define an annular first sealing chamber 5 therebetween, and the second flange 10 and the ceramic plate 4 define an annular second sealing chamber 11 therebetween. The first sealed chamber 5 and the second sealed chamber 11 are each disposed around the channel.
In some embodiments, the solid-liquid sealing medium is also filled in the first sealed chamber 5 and the second sealed chamber 11 and can undergo a phase change reaction in the first sealed chamber 5 and the second sealed chamber 11, and the solid-liquid state is converted. As an example, below the phase transition temperature, a solid-liquid sealing medium in solid form is accommodated in the first sealing chamber 5 and the second sealing chamber 11 when the sealing assembly is assembled. The assembled sealing assembly is applied to a high-temperature working condition, and as the working condition temperature of the sealing assembly gradually rises, solid-liquid sealing mediums in the first sealing chamber 5 and the second sealing chamber 11 are subjected to phase change, and the solid-liquid sealing mediums are converted from solid state to liquid state.
The liquid solid-liquid sealing medium in the first and second sealing chambers 5, 11 forms a wet seal in the sealing chambers, preventing gas in the channels from leaking through the assembly gap. In this way, the liquid solid-liquid sealing medium in the pores of the ceramic sheet 4 and the liquid solid-liquid sealing medium in the first sealing chamber 5 and the second sealing chamber 11 form a "double sealing protection", so that the sealing assembly provided by the embodiment of the invention has excellent sealing performance and is especially suitable for the field of high-temperature working conditions such as high-temperature water electrolysis equipment.
Further, a part of the liquid solid-liquid sealing medium in the first sealing chamber 5 and the second sealing chamber 11 may enter and fill in the gap between the first flange 3 and the ceramic sheet 4 and the gap between the second flange 10 and the ceramic sheet 4 by capillary effect.
The gap between the first flange 3 and the ceramic plate 4 and the gap between the second flange 10 and the ceramic plate 4 are gaps generated during the assembly process. Alternatively, the gap size is 0.1 microns to 1 micron. The liquid solid-liquid sealing medium filled in the gap between the first flange 3 and the ceramic wafer 4 and the gap between the second flange 10 and the ceramic wafer 4 can further avoid leakage of gas through the assembly gap.
As the working time increases, the first and second sealing chambers 5 and 11 still retain part of the liquid solid-liquid sealing medium, so that a wet seal line in the first and second sealing chambers 5 and 11 can be ensured. Thus, when the seal assembly is assembled, sufficient solid-liquid sealing medium should be contained in the first seal chamber 5 and the second seal chamber 11.
Therefore, the liquid solid-liquid sealing medium remaining in the first sealing chamber 5 and the second sealing chamber 11, the liquid solid-liquid sealing medium in the gap between the first flange 3 and the ceramic wafer 4 and the gap between the second flange 10 and the ceramic wafer 4, and the liquid solid-liquid sealing medium in the pores of the ceramic wafer 4 form a multiple seal line, further improving the sealing performance of the sealing assembly.
Fig. 1 is a cross-sectional view of an overall structure according to an embodiment of the present application, and as shown in fig. 1, an embodiment of the present application discloses a sealing assembly, including a ceramic sheet 4, a first flange 3, a second flange 10, and a solid-liquid sealing medium, wherein the ceramic sheet 4 is disposed between the first flange 3 and the second flange 10. That is, the first flange 3 and the second flange 10 are provided on both sides of the ceramic sheet 4, respectively.
Fig. 2 is a schematic structural view of a ceramic wafer according to an embodiment of the present application, and fig. 3 is a schematic structural view of a first flange according to an embodiment of the present application. As shown in fig. 1 and 2, the ceramic wafer 4 is provided with a gas through hole 7, the first flange is provided with a first opening 8, the second flange 10 is provided with a second opening 9, the axes of the gas through hole 7, the first opening 8 and the second opening 9 coincide, and the gas through hole 7, the first opening 8 and the second opening 9 form a communicating channel in the first direction. The channel is used for the circulation of a sealing medium (gas).
Alternatively, the ceramic sheet 4 in this embodiment is an insulating ceramic sheet, and the insulating ceramic sheet is used to perform an insulating sealing function when the water electrolysis apparatus is applied.
Alternatively, the ceramic sheet 4 has sufficient strength and flexibility, so that the ceramic sheet 4 is better matched with the first flange 3 and the second flange while ensuring the operation strength, so that the sealing performance of the sealing cavity is better.
In this embodiment, an annular first sealing chamber 5 is formed between the ceramic plate 4 and the first flange 3, and an annular second sealing chamber 11 is formed between the ceramic plate 4 and the second flange 10, and the first sealing chamber 5 and the second sealing chamber 11 are respectively disposed around the channels. That is, a first sealing chamber 5 and a second sealing chamber 11 are formed between both sides of the ceramic sheet 4 and the first flange 3 and the second flange 10, respectively.
In this embodiment, as shown in fig. 1, the side of the first flange 3 adjacent to the ceramic plate 4 is provided with an annular groove 14 surrounding the channel, and a first sealing chamber 5 is defined between the annular groove 14 and the side of the ceramic plate 4 adjacent to the first flange 3. That is, an annular groove 14 centered on the channel is formed on the first flange 3 and on the side close to the ceramic plate 4, and an annular first sealing chamber 5 is formed between the annular groove 14 and the ceramic plate 4.
Similar to the first flange 3, the side of the second flange 10 adjacent to the ceramic plate 4 is provided with an annular groove surrounding the channel, the annular groove and the side of the ceramic plate 4 adjacent to the second flange 10 defining the second sealing chamber 11 therebetween. That is, an annular groove centered on the channel is formed on the second flange 10 and near the other side of the ceramic plate 4, and an annular second sealing chamber 11 is formed between the annular groove and the ceramic plate 4.
In other embodiments, the side of the ceramic plate 4 adjacent to the first flange 3 may be provided with an annular groove surrounding the channel and defining a first sealed chamber 5 with the side of the first flange 3 adjacent to the ceramic plate 4. The side of the ceramic plate 4 adjacent to the second flange 10 may be provided with an annular groove surrounding the channel, the annular groove and the side of the second flange adjacent to the ceramic plate 4 defining a second sealed chamber 11 therebetween.
Alternatively, in other embodiments, the side of the first flange 3 adjacent to the ceramic plate 4 is provided with a first annular groove surrounding the channel, and the side of the ceramic plate 4 adjacent to the first flange 3 is provided with a second annular groove surrounding the channel, the first annular groove being opposite to the second annular groove and defining the first sealed chamber 5. That is, a first annular groove is provided on one side of the first flange 3, a second annular groove is provided on the side of the ceramic sheet 4 corresponding to the first flange 3, the first annular groove and the second annular groove are both arranged centering on the channel, and an annular first seal chamber 5 is formed between the first annular groove and the second annular groove.
Similarly to the first flange 3, the side of the second flange 10 adjacent to the ceramic plate 4 is provided with a third annular groove surrounding the channel, and the side of the ceramic plate 4 adjacent to the second flange 10 is provided with a fourth annular groove surrounding the channel, opposite to the fourth annular groove and defining a second sealed chamber 11. That is, a third annular groove is formed on one side of the second flange 10, a fourth annular groove is formed on the side of the ceramic plate 4 corresponding to the second flange 10, the third annular groove and the fourth annular groove are both arranged centering on the channel, and an annular second sealing chamber 11 is formed between the third annular groove and the fourth annular groove.
In some embodiments, the first sealing chamber 5 may include a plurality of first sealing chambers 5, and a plurality of first sealing chambers 5 are sleeved in sequence. That is, a plurality of concentric annular first sealing chambers 5, i.e., a plurality of first sealing chambers 5 may be provided between the first flange 3 and the ceramic plate 4 centering on the passage, and radially disposed along the ceramic plate 4 with different radii. It should be noted that a plurality of second seal chambers 11 may be disposed as well, and a plurality of second seal chambers 11 may be disposed radially of the ceramic sheet according to different radii, and a plurality of second seal chambers 11 may be disposed sequentially at a certain pitch or may be disposed at different pitches.
The arrangement of the plurality of first sealing chambers 5 and the plurality of second sealing chambers 11 can increase the accommodating space of the solid-liquid sealing medium, and can further increase the sealing line, so that the sealing assembly forms stronger wet sealing at high temperature and has more excellent sealing effect.
In some embodiments, the solid-liquid sealing medium is a salt mixture, the salt mixture melts to form molten salt, the molten salt is a molten mass formed after the salt melts, and the molten salt is in a liquid mode.
Optionally, the salt mixture includes at least two salt species, each having a common melting point, i.e., having the same (or a relatively similar) phase transition temperature.
Alternatively, the salt mixture in this example is 60% -70% molar lithium carbonate and 30% -40% molar potassium carbonate.
Optionally, the solid-liquid sealing medium has a phase transition temperature of 180 ℃ to 920 ℃.
As shown in fig. 1, the first flange 3 is connected to the first connection pipe 12, and the first connection pipe 12 communicates with the first opening 8, the second flange 10 is connected to the second connection pipe 13, and the second connection pipe 13 communicates with the second opening 9. The first connecting pipe 12 communicates with the second connecting pipe 13 through the first opening 8, the gas through hole 7 and the second opening 9, and integrally constitutes a passage extending in the first direction. It should be noted that the first connecting tube 12 and the second connecting tube 13 may be respectively inserted into the first opening 8 and the second opening 9. Of course, the first connecting pipe 12 and the second connecting pipe 13 may be fixed to the first flange 3 and the second flange 10, respectively, the end of the first connecting pipe 12 communicates with the end of the first opening 8, and the end of the second connecting pipe 13 communicates with the end of the second opening 9.
As shown in fig. 1-3, the ceramic plate 4 is provided with a first mounting hole 15, the first flange 3 is provided with a second mounting hole 6, and the second flange 10 is provided with a third mounting hole. The mounting screw 1 passes through the first, second and third mounting holes 15, 6 and 10 to connect the ceramic plate 4, the first and second flanges 3 and 10. That is, the second mounting hole 6, the third mounting hole and the first mounting hole 15 are formed in the first flange 3, the second flange 10 and the ceramic plate 4, respectively, the centers of the first mounting hole 15, the second mounting hole 6 and the third mounting hole are on the same straight line, the second mounting hole 6, the first mounting hole 15 and the third mounting hole are penetrated by the mounting screw 1, and the screw cap 2 is used for screwing, so that the first flange 3, the second flange and the ceramic plate 4 are relatively fixed.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (10)
1. A seal assembly, comprising: the ceramic plate is provided with a gas through hole, the inside of the ceramic plate is provided with a pore, and the pore diameter of the pore is 0.1-1 micron; and
the ceramic plate is clamped between the first flange and the second flange, and the gas through hole, the first opening and the second opening form a communicated channel relatively in a first direction;
the solid-liquid sealing medium is a phase change material, is at least filled in the pores and can undergo a phase change reaction in the pores.
2. The seal assembly of claim 1, wherein the ceramic wafer and the first flange define an annular first seal chamber therebetween, the ceramic wafer and the second flange define an annular second seal chamber therebetween, the first seal chamber and the second seal chamber both surround the channel, and the solid-liquid seal medium is further filled within the first seal chamber and the second seal chamber.
3. The seal assembly of claim 2, wherein a portion of the solid-liquid sealing medium in a liquid state is capable of entering and filling in a gap between the first flange and the ceramic wafer and a gap between the second flange and the ceramic wafer.
4. A seal assembly according to claim 2 or claim 3, wherein the side of the first flange adjacent the ceramic plate is provided with an annular groove surrounding the channel, the annular groove and the side of the ceramic plate adjacent the first flange defining the first seal chamber therebetween.
5. A seal assembly according to claim 2 or claim 3, wherein the side of the ceramic plate adjacent the first flange is provided with an annular groove surrounding the channel, the annular groove and the side of the first flange adjacent the ceramic plate defining the first seal chamber therebetween.
6. A seal assembly according to claim 2 or claim 3, wherein the side of the first flange adjacent the ceramic plate is provided with a first annular groove surrounding the passageway, and the side of the ceramic plate adjacent the first flange is provided with a second annular groove surrounding the passageway, the first annular groove being opposite the second annular groove and defining the first seal chamber.
7. The seal assembly of claim 1 wherein the solid-liquid sealing medium is a salt mixture that melts to form a molten salt.
8. The seal assembly of claim 7, wherein the salt mixture comprises 60% -70% molar content of lithium carbonate and 30% -40% molar content of potassium carbonate.
9. The seal assembly of claim 1, wherein the solid-liquid sealing medium is solid at room temperature.
10. The seal assembly of claim 1 or 9, wherein the solid-liquid sealing medium has a phase transition temperature of 180 ℃ -920 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110984249.0A CN113833853B (en) | 2021-08-25 | 2021-08-25 | Seal assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110984249.0A CN113833853B (en) | 2021-08-25 | 2021-08-25 | Seal assembly |
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| CN113833853A CN113833853A (en) | 2021-12-24 |
| CN113833853B true CN113833853B (en) | 2024-02-06 |
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| US4156530A (en) * | 1976-03-02 | 1979-05-29 | Vsesojuzny Teplotekhnichesky Nauchnoissledovatelsky Institut Imeni F. E. Dzerzhinskogo | Sealed assembly |
| EP1574774A1 (en) * | 2004-02-25 | 2005-09-14 | Atec Pharmatechnik Gmbh | Sealing arrangement |
| DE102011055032A1 (en) * | 2011-11-04 | 2013-05-08 | Ingo Bruchhold | Dynamic sealing system for e.g. ball valve used in thermal power plant, has heating element located in or adjacent to sealing element, such that temperature of sealing element can be maintained independent of temperature of medium |
| CN103075587A (en) * | 2013-01-17 | 2013-05-01 | 中国科学院上海应用物理研究所 | Dual-sealing flange |
| CN208237290U (en) * | 2018-04-23 | 2018-12-14 | 上海冀晟能源科技有限公司 | The sealing element of high temperature resistant molten salt corrosion |
| CN109899680A (en) * | 2019-02-22 | 2019-06-18 | 太平洋海洋工程（舟山）有限公司 | A kind of cable penetrating sealing device for FSRU |
| CN111677897A (en) * | 2020-07-21 | 2020-09-18 | 洛阳涧光特种装备股份有限公司 | Double-medium auxiliary sealing technology for flat gate valve |
| CN112145716A (en) * | 2020-09-04 | 2020-12-29 | 黄爱义 | Valve sealing structure |
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|---|---|
| CN113833853A (en) | 2021-12-24 |
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