CN113441084A - Mechanical seal of ultrahigh pressure reaction kettle, reaction kettle with seal and method - Google Patents
Mechanical seal of ultrahigh pressure reaction kettle, reaction kettle with seal and method Download PDFInfo
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- CN113441084A CN113441084A CN202110731317.2A CN202110731317A CN113441084A CN 113441084 A CN113441084 A CN 113441084A CN 202110731317 A CN202110731317 A CN 202110731317A CN 113441084 A CN113441084 A CN 113441084A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
- B01J3/03—Pressure vessels, or vacuum vessels, having closure members or seals specially adapted therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
- B01J3/002—Component parts of these vessels not mentioned in B01J3/004, B01J3/006, B01J3/02 - B01J3/08; Measures taken in conjunction with the process to be carried out, e.g. safety measures
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
- B01J3/06—Processes using ultra-high pressure, e.g. for the formation of diamonds; Apparatus therefor, e.g. moulds or dies
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Abstract
The invention discloses a mechanical seal of an ultrahigh pressure reaction kettle, which relates to the technical field of mechanical seal and comprises the following components: the bearing comprises a shaft sleeve, a connecting seat, a movable ring assembly and a static ring assembly. According to the invention, the metal part is embedded or attached to the outer side of the static ring, and the support ring is connected to the inner side of the graphite brake ring, so that on the one hand, the static ring is embedded or attached to the metal part, and the strength of the ring surface is ensured; in the second aspect, the movable ring is made of graphite, the graphite has high strength, and the metal piece can mainly bear pressure through embedding, so that the pressure bearing of the graphite movable ring is relatively smaller; in the third aspect, a support ring is arranged in the graphite moving ring, the support ring is a key point that the mechanical seal can not bear high pressure, the graphite moving ring has a force in the axial direction after the seal cavity is pressurized, the force is larger than the compressive strength of the graphite moving ring, the graphite moving ring is enabled to deform, and the support ring plays a role in supporting when the compressive strength of the graphite moving ring is insufficient.
Description
Technical Field
The invention relates to the technical field of mechanical seal, in particular to a mechanical seal of an ultrahigh pressure reaction kettle.
Background
With the continuous development of science and technology, the chemical industry also makes continuous progress; on the premise of realizing sustainable development, the chemical industry must ensure no environmental pollution and save energy to develop enterprises as a basis. In particular to a hydrogenation reaction kettle which is mainly applied to various catalytic reactions, high-temperature and high-pressure synthesis, hydrogenation reactions, gas-liquid two-phase, liquid-liquid two-phase, exothermic reactions, composition tests, stability, corrosivity tests, fine processing, supercritical reflection, catalyst evaluation and development and the like, and is mainly distributed in the fields of petrochemical industry, chemistry, pharmacy, polymer synthesis, metallurgy and the like; therefore, the requirement of a mechanical sealing device of the hydrogenation reaction kettle is also very high.
The medium in the reaction is inflammable and explosive, and the inside of a common reaction kettle is toxic substances, so that the medium cannot be leaked into the air, the requirement on mechanical sealing is very high, and the sealing device for the high-pressure reaction kettle is a sealing cavity, so that when the reaction kettle works, high pressure is generated in the sealing cavity, high-strength pressure difference is formed on the connecting end surface of the sealing cavity, the sealing cavity has potential risks of leakage and even bursting, once the sealing cavity leaks, the environment is seriously polluted, and the personnel of the outside environment and workers are seriously endangered.
Disclosure of Invention
One of the purposes of the invention is to solve the problems that the sealing cavity of the reaction kettle in the prior art has potential danger of leakage and even bursting, and the sealing performance and the safety of the sealing cavity are difficult to guarantee.
The invention also aims to provide a reaction kettle with the mechanical seal of the ultrahigh pressure reaction kettle.
The invention also aims to provide a sealing method.
In order to achieve one of the purposes, the invention adopts the following technical scheme: an ultrahigh pressure reactor mechanical seal, comprising: the bearing comprises a shaft sleeve, a connecting seat, a movable ring assembly and a static ring assembly.
The shaft sleeve is of a hollow structure and is used for connecting a stirring shaft; the connecting seat is sleeved on the shaft sleeve, a first inserting piece and a second inserting piece are connected to two sides of the connecting seat, the first inserting piece and the second inserting piece are sleeved on the shaft sleeve in the same mode, a sealing cavity is formed between the connecting seat and the shaft sleeve, and the shaft sleeve has a function of rotating along the connecting seat.
The movable ring assembly is installed in the sealing cavity and connected with the shaft sleeve, the movable ring assembly rotates along with the rotation of the shaft sleeve, the movable ring assembly is provided with a movable ring and a supporting ring, and the supporting ring is attached to and abutted against the inner side and/or the outer side of the movable ring.
The static ring assembly is installed in the sealed cavity, the static ring assembly is connected with the first insertion piece and/or the second insertion piece, the static ring assembly is provided with a static ring and a metal piece, the static ring is attached to the side end face of the movable ring, and the metal piece is installed on the side end face of the static ring.
Further, in the embodiment of the invention, the movable ring is mounted in the movable ring assembly or on the support ring in a mounting mode.
Further, in the embodiment of the present invention, the stationary ring is connected to the metal member by means of fitting or attaching.
Further, in the embodiment of the present invention, a gap is formed between the support ring and the shaft sleeve, and the outer diameter of the rotating ring is pressed by the support ring to reduce the inner hole of the rotating ring.
Further, in the embodiment of the present invention, the moving ring is made of a graphite material.
Further, in the embodiment of the present invention, the shaft sleeves have at least two, and are connected to each other in a stacked manner.
Further, in the embodiment of the invention, a framework oil seal is installed between the first insert and the shaft sleeve.
Further, in the embodiment of the present invention, a pressing cover is installed at the left side end of the first insert.
Still further, in the embodiment of the present invention, a connecting body is connected to a right end of the second insert, and a throttle ring is connected to a right end of the connecting body.
Further, in the embodiment of the present invention, a baffle ring is disposed between the movable ring assembly and the shaft sleeve.
Further, in the embodiment of the invention, the movable ring assembly is fixedly connected with the shaft sleeve through a screw.
Further, in an embodiment of the present invention, an O-ring is disposed between the stationary ring and the first insert.
Further, in the embodiment of the present invention, an explosion-proof ring is disposed between the moving ring assembly and the shaft sleeve, and the explosion-proof ring is made of fluororubber. The sealing ring is pressed under the high-pressure condition, once the machine seal leaks and is suddenly decompressed, the interior of the common sealing ring can be directly burst, the machine seal is seriously damaged, the performances such as hardness and the like can be improved through the explosion-proof ring, and the sealing ring can not be burst even if the machine seal leaks suddenly, so that the integrity of the machine seal part is kept.
The invention has the beneficial effects that:
according to the invention, the metal part is embedded or attached to the outer side of the static ring, and the support ring is connected to the inner side of the graphite brake ring, so that on the one hand, the static ring is embedded or attached to the metal part, and the strength of the ring surface is ensured; in the second aspect, the movable ring is made of graphite, the graphite has high strength, and the metal piece can mainly bear pressure through embedding, so that the pressure bearing of the graphite movable ring is relatively smaller; in the third aspect, a support ring is arranged in the graphite rotating ring, the support ring is a key point that the mechanical seal can not bear high pressure, the graphite rotating ring has a force in the axial direction after the seal cavity is pressurized, the force is larger than the compressive strength of the graphite rotating ring, the graphite rotating ring is enabled to deform, and the support ring plays a role in supporting when the compressive strength of the graphite rotating ring is insufficient. Therefore, through the enhancement of three aspects, can effectively reduce the sealed chamber and have the potential danger of revealing even bursting, avoid the damage, lead to the medium to reveal for the leakproofness and the security of sealed chamber are protected.
In order to achieve the second purpose, the invention adopts the following technical scheme: a reactor, wherein the reactor has an ultra high pressure reactor mechanical seal as set forth in any of the above objects.
In order to achieve the second purpose, the invention adopts the following technical scheme: the sealing method is applied to the mechanical seal of the ultrahigh-pressure reaction kettle, and comprises the following steps:
after the movable ring assembly and the static ring assembly are arranged in a sealing cavity between the shaft sleeve and the connecting seat, the shaft sleeve is controlled to rotate, so that the movable ring assembly is driven by the shaft sleeve to rotate, and the static ring assembly and the connecting seat are in a relatively static state;
when the shaft sleeve rotates, high pressure is generated in the sealing cavity, high-strength pressure difference is formed between the movable ring assembly and the static ring assembly in the sealing cavity, the movable ring of the movable ring assembly generates axial force after the sealing cavity is pressurized, if the force applied to the movable ring exceeds the compressive strength of the movable ring, the movable ring deforms, and at the moment, the support ring on the movable ring can support the movable ring, so that a clamping effect is provided for the movable ring, the movable ring is prevented from being damaged, a medium is prevented from leaking, and safety is harmed;
and the quiet ring in the quiet ring subassembly sets up the support of metalwork in the outside, not only when commonly using, when the rotating ring subassembly did not receive high pressure deformation promptly, has strengthened the anchor ring intensity of quiet ring subassembly with the connecting seat, strengthens sealed and safe effect to can also add when holding at the support ring, through the enhancement of metalwork, let the metalwork mainly bear pressure, avoid quiet ring to break, lead to the medium to reveal, harm safety.
Further, in the embodiment of the invention, when the graphite moving ring is embedded, the inner hole of the moving ring is properly reduced after the outer diameter of the graphite moving ring is extruded and is abutted to the support ring to generate damping force, so that the support ring can act after high-pressure deformation to increase the strength of the graphite moving ring, and the support ring does not work under normal conditions.
Drawings
FIG. 1 is a schematic structural diagram of a mechanical seal of an ultrahigh pressure reaction kettle according to an embodiment of the invention.
FIG. 2 is a schematic side view of the mechanical seal of the ultrahigh pressure reactor in the embodiment of the invention from the left side.
FIG. 3 is a schematic view of a part of the mechanical seal of the ultrahigh pressure reactor in the embodiment of the invention.
Fig. 4 is a partially enlarged view a of fig. 3.
In the attached drawings
1. Shaft sleeve 2, connecting seat 3 and first insertion piece
4. Second insert 5, seal cavity 6, skeleton oil seal
7. Gland 8, connecting body 9 and throttling ring
10. Rotating ring assembly 11, rotating ring 12 and support ring
13. Baffle ring 14, explosion-proof ring 15 and screw
20. Stationary ring assembly 21, stationary ring 22 and metal piece
23. O-shaped ring
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clear and fully described, embodiments of the present invention are further described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of some embodiments of the invention and are not limiting of the invention, and that all other embodiments obtained by those of ordinary skill in the art without the exercise of inventive faculty are within the scope of the invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "a," "an," "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
For the purposes of simplicity and explanation, the principles of the embodiments are described by referring mainly to examples. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments. But it is obvious. To one of ordinary skill in the art, the embodiments may be practiced without limitation to these specific details. In some instances, well-known sealing methods and structures have not been described in detail so as not to unnecessarily obscure the embodiments. In addition, all embodiments may be used in combination with each other.
The first embodiment is as follows:
an ultrahigh pressure reactor mechanical seal, as shown in fig. 1-4, comprises: the bearing comprises a shaft sleeve 1, a connecting seat 2, a movable ring assembly 10 and a static ring assembly 20.
The shaft sleeve 1 is of a hollow structure and is used for connecting a stirring shaft; the connecting seat 2 is sleeved on the shaft sleeve 1, a first inserting piece 3 and a second inserting piece 4 are connected to two sides of the connecting seat 2, the first inserting piece 3 and the second inserting piece 4 are sleeved on the shaft sleeve 1 in the same way, a sealing cavity 5 is arranged between the connecting seat 2 and the shaft sleeve 1, and the shaft sleeve 1 has a function of rotating along the connecting seat 2.
The movable ring assembly 10 is installed in the seal cavity 5, the movable ring assembly 10 is connected with the shaft sleeve 1, the movable ring assembly 10 rotates along with the rotation of the shaft sleeve 1, the movable ring assembly 10 is provided with a movable ring 11 and a support ring 12, and the support ring 12 is attached to and abutted against the inner side and/or the outer side of the movable ring 11. A baffle ring 13 is arranged between the movable ring assembly 10 and the shaft sleeve 1, at least two shaft sleeves 1 are connected with each other in a superposition mode, and the movable ring assembly 10 is fixedly connected with the shaft sleeve 1 through a screw 15.
The stationary ring assembly 20 is installed in the seal cavity 5, the stationary ring assembly 20 is connected to the first insert 3 and/or the second insert 4, the stationary ring assembly 20 has a stationary ring 21 and a metal member 22, the stationary ring 21 is attached to a side end surface of the rotating ring 11, and the metal member 22 is installed on an outer side end surface of the stationary ring 21. An O-ring 23 is provided between the stationary ring 21 and the first insert 3.
The movable ring 11 is made of graphite material, the movable ring 11 is mounted in the movable ring assembly 10 or on the support ring 12 in an embedding manner, and the stationary ring 21 is attached to the metal piece 22 in an embedding manner.
In use, the conditions are set as: the mechanical seal design pressure is 25MPA, the operation pressure in the autoclave is 12MPA, and the system pressure is 15 MPA. The temperature is 150 ℃, and the rotating speed is 25-100 revolutions.
The selection and formulation of shell (connecting seat 2, shaft sleeve 1, first insert 3, second insert 4, etc.) material and processing technology, the cold-rolled steel that the shell was used, low deformation. The processing technology comprises the steps of firstly carrying out solid solution, rough turning, aging, semi-finish turning, aging, bench work, aging and finish turning on the materials. And the stability of the material is ensured by multiple aging heat treatment.
The quiet ring 21 and the laminating of casing, the casing surface grinds, guarantees the roughness to adopt pure manual to grind metalwork 22, let the plane degree of metalwork 22 reach 0.01 millimeter, quiet ring 21 laminates with metalwork 22 all the time under the high pressure condition, guarantees the straightness that hangs down of machine seal and equipment.
The movable ring 11 and the static ring 21 are made of silicon carbide, American Morgan import graphite is selected as the graphite, and the end face lubrication effect of the movable ring 11 and the static ring 21 under the pressure of 15MPA is ensured according to the analysis and calculation of the dynamic fluid groove on the end face of the static ring 21.
Finally, after the movable ring assembly 10 and the stationary ring assembly 20 are installed in the sealing cavity 5 between the shaft sleeve 1 and the connecting seat 2, the shaft sleeve 1 is controlled to rotate, so that the movable ring assembly 10 is driven by the shaft sleeve 1 to rotate, and at the moment, the stationary ring assembly 20 and the connecting seat 2 are in a relatively static state;
when the shaft sleeve 1 rotates, high pressure is generated in the sealing cavity 5, high-strength pressure difference is formed between the movable ring assembly 10 and the static ring assembly 20 in the sealing cavity 5, the sealing cavity 5 is pressurized, the movable ring 11 of the movable ring assembly 10 generates axial force, if the force borne by the movable ring 11 exceeds the compressive strength of the movable ring, the movable ring 11 deforms, and at the moment, the support ring 12 on the movable ring 11 can support the movable ring 11 to provide a clamping effect for the movable ring 11, so that the movable ring 11 is prevented from being damaged, a medium is prevented from leaking, and safety is harmed;
and quiet ring 21 in quiet ring subassembly 20 sets up the support of metalwork 22 in the outside, not only when commonly using, when the rotating ring subassembly 10 did not receive high pressure deformation, has strengthened the anchor ring intensity of quiet ring subassembly 20 with connecting seat 2, strengthens sealed and safe effect to can also add when holding at support ring 12, through the enhancement of metalwork 22, let metalwork 22 mainly bear pressure, avoid quiet ring 21 to break, lead to the medium to reveal, harm safety.
According to the invention, the metal piece 22 is embedded or attached to the outer side of the static ring 21, and the support ring 12 is connected to the inner side of the graphite brake ring 11, so that on the one hand, the static ring 21 is embedded or attached to the metal piece 22, and the strength of the ring surface is ensured; in the second aspect, the moving ring 11 is made of graphite, the graphite has high strength, and the metal part 22 can mainly bear pressure through embedding, so that the graphite moving ring 11 bears a little pressure relatively; in the third aspect, a support ring 12 is arranged in the graphite rotating ring 11, the support ring 12 is a key point that the mechanical seal cannot bear high pressure, the graphite rotating ring 11 has a force in the axial direction after the seal cavity 5 is pressurized, the force is larger than the compressive strength of the graphite rotating ring 11, the graphite rotating ring 11 is caused to deform, and the support ring 12 plays a role in supporting when the compressive strength of the graphite rotating ring 11 is insufficient. Therefore, through the enhancement of three aspects, can effectively reduce sealed chamber 5 and have the potential danger of revealing even bursting, avoid the damage, lead to the medium to reveal for the leakproofness and the security of sealed chamber 5 are protected.
A gap is reserved between the support ring 12 and the shaft sleeve 1, and the outer diameter of the movable ring 11 is extruded through the support ring 12 to reduce the inner hole of the movable ring 11.
When the graphite retaining ring 11 is embedded, after the outer diameter of the graphite retaining ring 11 is extruded, the inner hole of the graphite retaining ring 11 is properly reduced and is pressed against the support ring 12 to generate damping force (the matching with the support ring 12 needs to reach a state of being similar to tight or not tight), so that the support ring 12 can be conveniently deformed under high pressure to increase the strength of the graphite retaining ring 11, and the support ring 12 does not work under normal conditions.
A framework oil seal 6 is arranged between the first insert 3 and the shaft sleeve 1, and a gland 7 is arranged at the left side end of the first insert 3. The right end of the second insert 4 is connected with a connecting body 8, and the right end of the connecting body 8 is connected with a throttling ring 9.
Example two:
the mechanical seal of the ultrahigh pressure reaction kettle has the same structural characteristics as the first embodiment, wherein an explosion-proof ring 14 is arranged between a movable ring assembly 10 and a shaft sleeve 1, and the explosion-proof ring 14 is made of fluororubber. The sealing ring is pressed under the high-pressure condition, once the machine seal leaks and is suddenly decompressed, the interior of the common sealing ring can be directly burst to seriously damage the machine seal, the performances such as hardness and the like can be improved through the explosion-proof ring 14, and the sealing ring can not be burst even if the machine seal leaks suddenly, so that the integrity of the machine seal part is kept.
Example three:
a reaction kettle, wherein the reaction kettle is provided with a mechanical seal of the ultrahigh pressure reaction kettle in any one of the first embodiment and the second embodiment.
Example four:
a sealing method is applied to mechanical sealing of an ultrahigh pressure reaction kettle in any one of the first embodiment and the second embodiment, and comprises the following steps:
after the movable ring assembly 10 and the stationary ring assembly 20 are installed in the sealing cavity 5 between the shaft sleeve 1 and the connecting seat 2, the shaft sleeve 1 is controlled to rotate, so that the movable ring assembly 10 is driven by the shaft sleeve 1 to rotate, and at the moment, the stationary ring assembly 20 and the connecting seat 2 are in a relatively static state;
when the shaft sleeve 1 rotates, high pressure is generated in the sealing cavity 5, high-strength pressure difference is formed between the movable ring assembly 10 and the static ring assembly 20 in the sealing cavity 5, the sealing cavity 5 is pressurized, the movable ring 11 of the movable ring assembly 10 generates axial force, if the force borne by the movable ring 11 exceeds the compressive strength of the movable ring, the movable ring 11 deforms, and at the moment, the support ring 12 on the movable ring 11 can support the movable ring 11 to provide a clamping effect for the movable ring 11, so that the movable ring 11 is prevented from being damaged, a medium is prevented from leaking, and safety is harmed;
and quiet ring 21 in quiet ring subassembly 20 sets up the support of metalwork 22 in the outside, not only when commonly using, when the rotating ring subassembly 10 did not receive high pressure deformation, has strengthened the anchor ring intensity of quiet ring subassembly 20 with connecting seat 2, strengthens sealed and safe effect to can also add when holding at support ring 12, through the enhancement of metalwork 22, let metalwork 22 mainly bear pressure, avoid quiet ring 21 to break, lead to the medium to reveal, harm safety.
When the graphite brake ring 11 is embedded, the outer diameter of the graphite brake ring is extruded, the inner hole of the graphite brake ring 11 is properly reduced and is pressed against the support ring 12 to generate damping force, the support ring 12 acts to increase the strength of the graphite brake ring 11 after high-pressure deformation, and the support ring 12 does not act under normal conditions.
Although the illustrative embodiments of the present invention have been described above to enable those skilled in the art to understand the present invention, the present invention is not limited to the scope of the embodiments, and it is apparent to those skilled in the art that all the inventive concepts using the present invention are protected as long as they can be changed within the spirit and scope of the present invention as defined and defined by the appended claims.
Claims (15)
1. An ultrahigh pressure reactor mechanical seal, comprising:
the shaft sleeve is of a hollow structure;
the connecting seat is sleeved on the shaft sleeve, a first inserting piece and a second inserting piece are connected to two sides of the connecting seat, the first inserting piece and the second inserting piece are sleeved on the shaft sleeve in the same way, a sealing cavity is formed between the connecting seat and the shaft sleeve, and the shaft sleeve has a function of rotating along the connecting seat;
a rotating ring assembly mounted in the seal cavity, the rotating ring assembly coupled to the shaft sleeve, the rotating ring assembly rotating with rotation of the shaft sleeve, the rotating ring assembly having:
a moving ring;
the support ring is attached to and abutted against the inner side and/or the outer side of the movable ring;
a stationary ring assembly mounted in the seal cavity, the stationary ring assembly being connected to the first insert and/or the second insert, the stationary ring assembly having:
the static ring is attached to the side end face of the dynamic ring;
and the metal piece is arranged on the end face of the outer side of the static ring.
2. The mechanical seal of the ultrahigh-pressure reactor according to claim 1, wherein the movable ring is mounted in the movable ring assembly or on the support ring by means of inlaying.
3. The mechanical seal of the ultrahigh-pressure reactor according to claim 1, wherein the static ring is connected with the metal piece in a way of inlaying or attaching.
4. The mechanical seal of the ultrahigh-pressure reactor according to claim 1, wherein a gap is formed between the support ring and the shaft sleeve, and the outer diameter of the movable ring is extruded by the support ring to reduce the inner hole of the movable ring.
5. An ultrahigh-pressure reactor mechanical seal according to claim 1, wherein the rotating ring is made of graphite material.
6. An ultra-high pressure reactor mechanical seal according to claim 1, wherein the bushing has at least two, which are connected to each other in a superimposed manner.
7. An ultrahigh-pressure reactor mechanical seal according to claim 1, wherein a framework oil seal is mounted between the first insert and the shaft sleeve.
8. An ultra-high pressure reactor mechanical seal according to claim 7, wherein the first insert is fitted with a gland at its left end.
9. The mechanical seal for the ultrahigh-pressure reactor according to claim 7, wherein a connector is connected to the right end of the second insert, and a throttling ring is connected to the right end of the connector.
10. An ultrahigh-pressure reactor mechanical seal according to claim 1, wherein a baffle ring is arranged between the movable ring assembly and the shaft sleeve.
11. An ultra-high pressure reactor mechanical seal according to claim 10, wherein the rotating ring assembly is fixedly connected with the shaft sleeve by a screw.
12. The mechanical seal of the ultrahigh-pressure reactor according to claim 1, wherein an O-ring is arranged between the static ring and the first insert.
13. A reactor having an ultra high pressure reactor mechanical seal as claimed in any one of claims 1 to 12.
14. A sealing method applied to the mechanical seal of the ultrahigh-pressure reaction kettle of any one of claims 1 to 12, wherein the method comprises the following steps:
after the movable ring assembly and the static ring assembly are arranged in a sealing cavity between the shaft sleeve and the connecting seat, the shaft sleeve is controlled to rotate, so that the movable ring assembly is driven by the shaft sleeve to rotate, and the static ring assembly and the connecting seat are in a relatively static state;
when the shaft sleeve rotates, high pressure is generated in the sealing cavity, high-strength pressure difference is formed between the movable ring assembly and the static ring assembly in the sealing cavity, the movable ring of the movable ring assembly generates axial force after the sealing cavity is pressurized, if the force applied to the movable ring exceeds the compressive strength of the movable ring, the movable ring deforms, and at the moment, the support ring on the movable ring can support the movable ring, so that a clamping effect is provided for the movable ring, the movable ring is prevented from being damaged, a medium is prevented from leaking, and safety is harmed;
and the quiet ring in the quiet ring subassembly sets up the support of metalwork in the outside, not only when commonly using, when the rotating ring subassembly did not receive high pressure deformation promptly, has strengthened the anchor ring intensity of quiet ring subassembly with the connecting seat, strengthens sealed and safe effect to can also add when holding at the support ring, through the enhancement of metalwork, let the metalwork mainly bear pressure, avoid quiet ring to break, lead to the medium to reveal, harm safety.
15. The sealing method according to claim 14, wherein when the graphite rotor ring is inserted, the inner bore of the rotor ring is properly reduced to abut against the support ring to generate a damping force when the outer diameter of the graphite rotor ring is compressed, so that the support ring acts to increase the strength of the graphite rotor ring after the high-pressure deformation, and the support ring does not act normally.
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| CN202110731317.2A CN113441084A (en) | 2021-06-30 | 2021-06-30 | Mechanical seal of ultrahigh pressure reaction kettle, reaction kettle with seal and method |
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| CN202110731317.2A CN113441084A (en) | 2021-06-30 | 2021-06-30 | Mechanical seal of ultrahigh pressure reaction kettle, reaction kettle with seal and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114471366A (en) * | 2022-04-01 | 2022-05-13 | 漳州明建机械设备制造有限公司 | Prevent liquid superhigh pressure treatment facility of leakage |
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| CN211738028U (en) * | 2020-02-17 | 2020-10-23 | 上海好米密封科技有限公司 | Combined sealing device for kettle |
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| CN114471366A (en) * | 2022-04-01 | 2022-05-13 | 漳州明建机械设备制造有限公司 | Prevent liquid superhigh pressure treatment facility of leakage |
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