CN109630686A - A kind of combination sealing system of reaction kettle agitating shaft and its application - Google Patents
A kind of combination sealing system of reaction kettle agitating shaft and its application Download PDFInfo
- Publication number
- CN109630686A CN109630686A CN201811574266.1A CN201811574266A CN109630686A CN 109630686 A CN109630686 A CN 109630686A CN 201811574266 A CN201811574266 A CN 201811574266A CN 109630686 A CN109630686 A CN 109630686A
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- Prior art keywords
- agitating shaft
- mechanical seal
- medium
- reaction kettle
- seal chamber
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- 238000007789 sealing Methods 0.000 title claims abstract description 89
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 47
- 239000002245 particle Substances 0.000 claims abstract description 13
- 238000003860 storage Methods 0.000 claims description 38
- 239000007788 liquid Substances 0.000 claims description 22
- 239000007787 solid Substances 0.000 claims description 12
- 238000010557 suspension polymerization reaction Methods 0.000 claims description 12
- 230000003020 moisturizing effect Effects 0.000 claims description 11
- 238000003756 stirring Methods 0.000 claims description 10
- 239000002826 coolant Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 9
- 239000012530 fluid Substances 0.000 claims description 8
- 239000002360 explosive Substances 0.000 claims description 4
- 239000000178 monomer Substances 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000003749 cleanliness Effects 0.000 description 2
- 239000000110 cooling liquid Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 229910001928 zirconium oxide Inorganic materials 0.000 description 2
- 206010000372 Accident at work Diseases 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 239000012429 reaction media Substances 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 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
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3464—Mounting of the seal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
-
- 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
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3404—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal
-
- 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
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3492—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member with monitoring or measuring means associated with the seal
-
- 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
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/40—Sealings between relatively-moving surfaces by means of fluid
- F16J15/406—Sealings between relatively-moving surfaces by means of fluid by at least one pump
-
- 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
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/40—Sealings between relatively-moving surfaces by means of fluid
- F16J15/43—Sealings between relatively-moving surfaces by means of fluid kept in sealing position by magnetic force
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Sealing (AREA)
Abstract
The present invention provides a kind of combination sealing system of reaction kettle agitating shaft, the combination sealing system of the reaction kettle agitating shaft includes: that external magnetic region moves portion, atmospheric side magnetic seal chamber, interior Magnetic drive portion and agitating shaft, the external magnetic region moves portion and interior Magnetic drive portion and is successively sheathed on the outside of agitating shaft from outside to inside and forms atmospheric side magnetic seal structure, and the upper and lower side of the atmospheric side magnetic seal structure is respectively arranged with bearing；Second flange, second medium side mechanical seal chamber, first flange and first medium side mechanical seal chamber are successively sheathed on the outside of agitating shaft from top to bottom in atmospheric side magnetic seal lower part and form the second mechanical seal of side medium and the first mechanical seal of side medium；The second mechanical seal of side medium is located at the atmospheric side magnetic seal chamber lower part, and mechanical seal intracavitary particle in the second medium side is prevented to enter atmospheric side magnetic seal chamber.The combination sealing system with high security, stability it is good, the advantages that easy to maintain, long service life.
Description
Technical field
The present invention relates to technical field of sealing technology in the reaction system with mesohigh reaction kettle, are applicable in more particularly, to one kind
There is the reaction kettle agitating shaft of the reaction system of the characteristics such as solid particle, inflammable and explosive, hypertoxic in medium in mesohigh reaction kettle
Combination sealing system and its application.
Background technique
Reaction kettle is the key equipment of Chemical Manufacture, and reaction kettle stirring shaft seal is the key that then reaction kettle portion
Part, the even more the first line of defence of Safe production of chemical industry.Suspension polymerization has reaction pressure height, reaction medium solid content height, object
Material medium is inflammable and explosive and has the characteristics that toxicity more.Therefore, the sealing device for studying polymerization reaction kettle stirring is extremely important.
Current existing sealing device is easily in " dry operating " state, and impurity is scurried into, medium reaction causes operating condition variation seal face to become
Shape seriously affects using effect and safe and stable arrangement.So needing to design a kind of sealing system, it is able to satisfy polymerization work
Skill seals safe and reliable requirement to reaction kettle.
In the prior art, have described below for reaction kettle sealing device:
Patent CN107339437A elaborates a kind of mechanical seal structure of reaction kettle agitating shaft.This method passes through plus high-pressure nitrogen
Gas cylinder carries out pressurized control to cooling liquid storage tank to realize, but gas in coolant liquid and solid particle exist may cause sealing
Failure, atmosphere end seal failure will lead to material in kettle and leak, and cause safety accident.
Patent CN201135873Y elaborates a kind of magnetic force agitating sealing device.This method by impressed pressure compensator come
It realizes the balance up and down of seal assembly, but uses single mechanical end face seal, easily cause seal failure in high solids content system, Gu
Body particle enters in circulating cooling liquid, and causing stirring bearing to enter solid particle causes to stir unexpected stopping.
Summary of the invention
The technical problem to be solved by the present invention is based on the above issues, providing one kind can satisfy mesohigh suspension polymerisation
The combination sealing system for the reaction kettle agitating shaft that technique is required to sealing, securely and reliably.
For this purpose, above-mentioned purpose of the invention is achieved through the following technical solutions:
A kind of combination sealing system of reaction kettle agitating shaft, the combination sealing system of the reaction kettle agitating shaft include:
External magnetic region moves portion, atmospheric side magnetic seal chamber, interior Magnetic drive portion and agitating shaft, and the external magnetic region moves portion and interior Magnetic drive portion
It is successively sheathed on the outside of agitating shaft from outside to inside to form atmospheric side magnetic seal structure, the atmospheric side magnetic seal structure
Upper and lower side is respectively arranged with bearing；
First flange, second flange, first medium side mechanical seal chamber, second medium side mechanical seal chamber, the first stationary ring, second
Stationary ring, the first rotating ring and the second rotating ring, the second flange, second medium side mechanical seal chamber, first flange and first medium
Mechanical seal chamber in side is successively sheathed on the outside of agitating shaft in the lower part of atmospheric side magnetic seal structure to form medium from top to bottom
The first mechanical seal structure of the second mechanical seal structure of side and side medium；The second mechanical seal structure of side medium is located at the atmosphere
The lower part of side magnetic seal chamber prevents mechanical seal intracavitary particle in the second medium side from entering atmospheric side magnetic seal intracavitary；
The upper end of the first medium side mechanical seal chamber and the sealing of first flange lower end are connected, and the first stationary ring, the second stationary ring difference are close
Sealing be set to first flange lower end inside and second flange lower end inside, first on the outside of first medium side mechanical seal chamber
The upper end of rotating ring and the lower end of the first stationary ring are in sealing contact, the second rotating ring on the outside of second medium side mechanical seal chamber it is upper
It holds in sealing contact with the lower end of the second stationary ring；First rotating ring is fixed on agitating shaft, is placed in reaction kettle and is contacted with material.
While by adopting the above technical scheme, the present invention can also be used or be combined using technology further below
Scheme:
Preferably, the combination sealing system of the reaction kettle agitating shaft further includes outer loop sealing capability, the outer loop
Sealing capability along coolant flow direction be successively arranged moisturizing container, grade one filter, diaphragm metering pump, additional pressure type storage tank,
Secondary filter and circulating pump, the coolant liquid in the moisturizing container are pressurized to after grade one filter by diaphragm metering pump outer
In adding pressure type storage tank, the coolant liquid in additional pressure type storage tank is delivered to first medium side machine by circulating pump after secondary filter
The tool seal chamber and mechanical seal of second medium side is intracavitary is recycled.
Preferably, the moisturizing container can be replenisher tank or moisturizing slot etc..
Preferably, the metering pump is diaphragm metering pump.
Preferably, the grade one filter is y-type filter, and the secondary filter is basket filter.
Preferably, the combination sealing system of the reaction kettle agitating shaft includes two sets of outer loop sealing capabilities, a set of outer
Portion recycles sealing capability and provides first medium sealing fluid, another set of outer loop sealing capability for first medium side mechanical seal chamber
Second medium sealing fluid is provided for second medium side mechanical seal chamber.
Preferably, heat exchange coil is equipped in the additional pressure type storage tank.
Preferably, the additional pressure type storage tank is equipped with liquidometer and liquid level alarm, when liquid in the additional pressure type storage tank
Triggering alarm and automatic liquid supply when position is lower than setting value.
Preferably, the additional pressure type storage tank is equipped with pressure gauge and pressure alarm, when the additional pressure type storage tank internal pressure
Power is less than or equal to triggering alarm and Automatic-boosting when reactor pressure.
Preferably, it is the Mpa of 0.01Mpa ~ 1.6 that the additional pressure type tank inner pressure, which is higher than reacting kettle inner pressure,；More preferably
Ground, it is 0.1 Mpa that the pressure in the additional pressure type storage tank, which is higher than reacting kettle inner pressure,.
Preferably, the pressure of the additional pressure type storage tank for the outer loop sealing capability being connected with second medium side mechanical seal chamber
Power is higher by 0.01 than the pressure of the additional pressure type storage tank for the outer loop sealing capability being connected with first medium side mechanical seal chamber ~
1.0 Mpa；More preferably, pressure is higher by 0.5 Mpa.
Preferably, the first medium sealing fluid and second medium sealing fluid use reaction dissolvent, but do not share.
Preferably, bearing is oil-less self-lubricating bearing, and material is zirconium oxide or silicon nitride.
Preferably, the revolving speed of agitating shaft is less than 400 rpm, it is highly preferred that revolving speed is 200 rpm.
Second object of the present invention is, for the deficiencies in the prior art, provides a kind of reaction kettle agitating shaft
Application of the combination sealing system in mesohigh suspension polymerization kettle.
For this purpose, above-mentioned purpose of the invention is achieved through the following technical solutions:
According to application of the combination sealing system of previously described reaction kettle agitating shaft in mesohigh suspension polymerization kettle, institute
State in mesohigh suspension polymerization kettle that material has solid particle and starting monomer is inflammable and explosive, hypertoxic, corrosivity.
While by adopting the above technical scheme, the present invention can also be used or be combined using technology further below
Scheme:
Preferably, 0.1 ~ 20 Mpa of pressure, more preferably 12 Mpa in the mesohigh suspension polymerization kettle.
Preferably, the agitating mode in the mesohigh suspension polymerization kettle includes upper stirring, lower stirring.
Compared with prior art, the device have the advantages that including:
1, the present invention uses " magnetic force+machinery " combination sealing, can effectively prevent the material leakage that mechanical seal failure may cause
And the industrial accidents such as explosion, poisoning caused, substantially increase security performance.
2, the present invention increases by two on the basis of atmospheric side magnetic seal structure and both ends of the surface side medium mechanical seal structure
Outer loop sealing capability progress circulation seal is covered, for hindering envelope, lubrication and cooling；And outer loop sealing capability is using metering
The pressure of pump pressurization, control second medium side mechanical seal chamber is slightly above the pressure of first medium side mechanical seal chamber, and first is situated between
The pressure of matter side mechanical seal chamber is slightly above reacting kettle inner pressure, so that reaction system occurs in first medium side mechanical seal chamber
Emergency protection sealing can be provided when leakage by second medium side mechanical seal chamber；Due to the emergency of second medium side mechanical seal chamber
Thus defencive function starting, external balance tank liquid level, the pressure of the first, second side medium mechanical seal chamber will change and
Alarm is generated, prompts to carry out maintenance maintenance to the device.
3, outer loop sealing capability of the invention is equipped with liquidometer and liquid level alarm, pressure gauge and pressure alarm,
The pressure requirement of combination sealing system is effectively ensured, substantially increases the stability of system.
4, outer loop sealing capability of the invention is equipped with I and II filter, for filtering out for solid particle, avoids solid
Body particle brings system into, guarantees the cleanliness of system；And compulsory circulative cooling is carried out using solvent, it can effectively reduce in system
Solid particle or bubble greatly improve the service life of combination machine envelope to the impact wear of sealing element；Letter is only needed in maintenance process
Single disassembly, cleaning filtering, maintenance duration is short, maintenance content is succinctly easy to operate.
5, atmospheric side magnetic seal structure provided by the present invention is equipped with self-lubricating abrasion-resistant zirconium oxide bearing, tool in its lower end
There are wear-resisting, resistance to high revolving speed, oil-free self lubrication, improve the dynamic stability of agitating shaft, improves combination sealing system operating
Stability.
6, combination sealing system parallel-adder settle-out time provided by the present invention is long, generally uses more than 3 years, and only need half a year
Carry out primary cleaning maintenance activity, and use mechanical seal or the magnetic seal of the prior art, due to high pressure and high solids content body
The process characteristic of system, general service life are no more than half a year.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the combination sealing system of reaction kettle agitating shaft provided by the present invention.
In figure: 1- external magnetic region moves portion；2- atmospheric side seal chamber；Magnetic drive portion in 3-；4- agitating shaft；5- first flange；6-
Second flange；7- first medium side mechanical seal chamber；8- second medium side mechanical seal chamber；The first stationary ring of 9-；10- second is quiet
Ring；The first rotating ring of 11-；The second rotating ring of 12-；13.14- additional pressure type storage tank；15.16- moisturizing slot；17- oil-less self-lubricating bearing；
18.19- heat exchange coil；20.21- diaphragm metering pump；22.23- circulating pump；24.25- level-one y-type filter；26.27- second level basket
Formula filter；28.29- far transmission level meter；30.31- distance-transmission pressure gauge.
Specific embodiment
Next combined with specific embodiments below invention is further explained, but does not limit the invention to these tools
Body embodiment.One skilled in the art would recognize that present invention encompasses may include in Claims scope
All alternatives, improvement project and equivalent scheme.
The present embodiment provides a kind of combination sealing systems of reaction kettle agitating shaft, and it is anti-to be particularly suitable for mesohigh suspension polymerisation
Kettle is answered, Fig. 1 schematically illustrates the structural schematic diagram of the combination sealing system of reaction kettle agitating shaft provided by the present invention, such as
Shown in Fig. 1, the combination sealing system of reaction kettle agitating shaft includes:
External magnetic region moves portion 1, atmospheric side magnetic seal chamber 2, interior Magnetic drive portion 3, agitating shaft 4, first flange 5, second flange 6, and
One side medium mechanical seal chamber 7, second medium side mechanical seal chamber 8, the first stationary ring 9, the second stationary ring 10, the first rotating ring 11,
Two rotating rings 12, on the basis of use direction, external magnetic region moves portion 1 and interior Magnetic drive portion 3 is successively sheathed on outside agitating shaft 4 from outside to inside
Side is to form atmospheric side magnetic seal structure；Second flange 6, second medium side mechanical seal chamber 8, first flange 5, first medium
Side mechanical seal chamber 7 is successively sheathed on 4 outside of agitating shaft, first medium in the downside of atmospheric side magnetic seal structure from top to bottom
The upper end of side mechanical seal chamber 7 and the sealing of 5 lower end of first flange are connected, and the first stationary ring 9, the second stationary ring 10 seal be fixedly arranged on respectively
6 lower end inside of 5 lower end inside of first flange and second flange, the first rotating ring positioned at 7 outside of first medium side mechanical seal chamber
11 upper end and the lower end of the first stationary ring 9 are in sealing contact, the second rotating ring 12 on the outside of second medium side mechanical seal chamber 8
Upper end and the lower end of the second stationary ring 10 are in sealing contact.
The combination sealing system of reaction kettle agitating shaft further includes two sets and is suitable for first medium side mechanical seal chamber 7 and is applicable in
In the outer loop sealing capability of second medium side mechanical seal chamber 8, two sets of outer loop sealing capabilities all have an external pressurized
Formula storage tank 13,14, moisturizing slot 15,16, diaphragm metering pump 20,21, circulating pump 22,23, filter 24,25,26,27, liquidometer
28,29, pressure gauge 30,31, wherein additional pressure type storage tank 13,14 is connected to by pipeline with moisturizing slot 15,16, moisturizing slot 15,16
In coolant liquid be pressurized in additional pressure type storage tank 13,14 after level-one y-type filter 24,25 by diaphragm metering pump 20,21,
It is close that coolant liquid in additional pressure type storage tank 13,14 is delivered to medium by circulating pump 22,23 after second level basket filter 26,27
Seal intracavitary carry out forced circulation；Atmospheric side magnetic seal chamber 2 is not passed through the cold liquid of circulation, atmospheric side magnetic seal structure it is upper and lower
Side is provided with oil-less self-lubricating bearing 17.
The sealing fluid cyclic system of the sealing fluid circulation and second medium seal chamber 7 of first medium side mechanical seal chamber 7
System is individually run, and sealing fluid is all made of reaction system material solvent.
Heat exchange coil 18,19 is provided with inside the additional pressure type storage tank 13,14 of two sets of outer loop sealing capabilities.
When outer loop sealing capability is run, added using diaphragm metering pump 20,21 external adding pressure type storage tanks 13,14
Pressure, and additional 13 pressure of pressure type storage tank of 8 outer loop sealing capability of second medium seal chamber is kept to seal higher than first medium
Additional 14 pressure of pressure type storage tank, 0.01 ~ 1.0 Mpa, preferably 0.5 Mpa of 7 outer loop sealing capability of chamber.Additional pressure type storage tank
14 after the pressurization of metering pump 21, maintained at higher than the reactor pressure Mpa of 0.01 Mpa ~ 1.6, preferably 0.1 Mpa.
Level-one y-type filter 24,25, additional pressure type storage are provided between additional pressure type storage tank 13,14 and moisturizing slot 15,16
The pipeline that tank 13,14 is connected to each seal chamber is provided with second level basket filter 26,27, cooling for outer loop sealing capability
Solid particle filters out in liquid, guarantees the cleanliness of lubricating system.
Additional pressure type storage tank 13,14 adds far transmission level meter 28,29 respectively, and is provided with liquid level alarm and (does not show in figure
Out), triggering alarm and automatic liquid supply when liquid level low liquid level in additional pressure type storage tank.
Additional pressure type storage tank 13,14 adds distance-transmission pressure gauge 30,31 respectively, and is provided with pressure alarm and (does not show in figure
Out), when pressure is less than or equal to reacting kettle inner pressure in additional pressure type storage tank 14, triggering alarm and Automatic-boosting；Work as external pressurized
Pressure is less than or equal to triggering alarm and Automatic-boosting when additional pressure type storage tank 14 in formula storage tank 13；This setting, which can effectively ensure that, is
The fluid-tight of system can satisfy requirement, further increase the stable operation of system.
Above-mentioned specific embodiment is used to illustrate the present invention, is merely a preferred embodiment of the present invention, rather than to this
Invention is limited, and within the spirit of the invention and the scope of protection of the claims, to any modification of the invention made, is equal
Replacement, improvement etc., both fall within protection scope of the present invention.
Claims (10)
1. a kind of combination sealing system of reaction kettle agitating shaft, which is characterized in that the combination sealing system of the reaction kettle agitating shaft
System includes:
External magnetic region moves portion, atmospheric side magnetic seal chamber, interior Magnetic drive portion and agitating shaft, and the external magnetic region moves portion and interior Magnetic drive portion
It is successively sheathed on the outside of agitating shaft from outside to inside to form atmospheric side magnetic seal structure, the atmospheric side magnetic seal structure
Upper and lower side is respectively arranged with bearing；
First flange, second flange, first medium side mechanical seal chamber, second medium side mechanical seal chamber, the first stationary ring, second
Stationary ring, the first rotating ring and the second rotating ring, the second flange, second medium side mechanical seal chamber, first flange and first medium
Mechanical seal chamber in side is successively sheathed on the outside of agitating shaft in the lower part of atmospheric side magnetic seal structure to form medium from top to bottom
The first mechanical seal structure of the second mechanical seal structure of side and side medium；The second mechanical seal structure of side medium is located at the atmosphere
The lower part of side magnetic seal chamber prevents mechanical seal intracavitary particle in the second medium side from entering atmospheric side magnetic seal intracavitary；
The upper end of the first medium side mechanical seal chamber and the sealing of first flange lower end are connected, and the first stationary ring, the second stationary ring difference are close
Sealing be set to first flange lower end inside and second flange lower end inside, first on the outside of first medium side mechanical seal chamber
The upper end of rotating ring and the lower end of the first stationary ring are in sealing contact, the second rotating ring on the outside of second medium side mechanical seal chamber it is upper
It holds in sealing contact with the lower end of the second stationary ring；First rotating ring is fixed on agitating shaft, is placed in reaction kettle and is contacted with material.
2. the combination sealing system of reaction kettle agitating shaft according to claim 1, which is characterized in that the reaction kettle stirring
The combination sealing system of axis further includes outer loop sealing capability, the outer loop sealing capability along coolant flow direction according to
It is secondary to be equipped with moisturizing container, grade one filter, metering pump, additional pressure type storage tank, secondary filter and circulating pump, the moisturizing container
In coolant liquid be pressurized in additional pressure type storage tank after grade one filter by metering pump, the coolant liquid in additional pressure type storage tank
After secondary filter by circulating pump be delivered to first medium side mechanical seal chamber and the mechanical seal of second medium side it is intracavitary into
Row circulation.
3. the combination sealing system of reaction kettle agitating shaft according to claim 2, which is characterized in that the reaction kettle stirring
The combination sealing system of axis includes two sets of outer loop sealing capabilities, and a set of outer loop sealing capability is that first medium side is mechanical
Seal chamber provides first medium sealing fluid, and another set of outer loop sealing capability provides second for second medium side mechanical seal chamber
Medium-tight liquid.
4. the combination sealing system of reaction kettle agitating shaft according to claim 2, which is characterized in that the additional pressure type storage
Tank is equipped with liquidometer and liquid level alarm, and when liquid level is lower than setting value in the additional pressure type storage tank, triggering is alarmed and mended automatically
Liquid.
5. the combination sealing system of reaction kettle agitating shaft according to claim 2, which is characterized in that the additional pressure type storage
Tank is equipped with pressure gauge and pressure alarm, the triggering alarm when the additional pressure type tank inner pressure is less than or equal to reactor pressure
And Automatic-boosting.
6. the combination sealing system of reaction kettle agitating shaft according to claim 2, which is characterized in that the additional pressure type
It is the Mpa of 0.01Mpa ~ 1.6 that tank inner pressure, which is higher than reacting kettle inner pressure,.
7. the combination sealing system of reaction kettle agitating shaft according to claim 2, which is characterized in that with second medium side machine
The pressure ratio and first medium side mechanical seal chamber phase of the additional pressure type storage tank of the connected outer loop sealing capability of tool seal chamber
The pressure of the additional pressure type storage tank of outer loop sealing capability even is higher by 0.01 ~ 1.0 Mpa.
8. the combination sealing system of any reaction kettle agitating shaft is in mesohigh suspension polymerization kettle in claim 1-7
In application, which is characterized in that in the mesohigh suspension polymerization kettle material have solid particle and starting monomer it is inflammable
Explosive, hypertoxic, corrosivity.
9. the combination sealing system of reaction kettle agitating shaft according to claim 8 is in mesohigh suspension polymerization kettle
Using, which is characterized in that 0.1 ~ 20 Mpa of pressure in the mesohigh suspension polymerization kettle.
10. the combination sealing system of reaction kettle agitating shaft according to claim 8 is in mesohigh suspension polymerization kettle
Application, which is characterized in that the agitating mode in the mesohigh suspension polymerization kettle include it is upper stirring, lower stirring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811574266.1A CN109630686B (en) | 2018-12-21 | 2018-12-21 | Combined sealing system of reaction kettle stirring shaft and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811574266.1A CN109630686B (en) | 2018-12-21 | 2018-12-21 | Combined sealing system of reaction kettle stirring shaft and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109630686A true CN109630686A (en) | 2019-04-16 |
| CN109630686B CN109630686B (en) | 2020-08-28 |
Family
ID=66076385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811574266.1A Active CN109630686B (en) | 2018-12-21 | 2018-12-21 | Combined sealing system of reaction kettle stirring shaft and application thereof |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| SU1663288A1 (en) * | 1988-09-19 | 1991-07-15 | Дзержинский филиал Ленинградского научно-исследовательского и конструкторского института химического машиностроения | Compound seal |
| CN2115428U (en) * | 1992-03-17 | 1992-09-09 | 曹红蓓 | Zero leak sealer with gas, steam and liquid isolation mechanism |
| CN201944274U (en) * | 2011-01-21 | 2011-08-24 | 昆山密友机械密封有限公司 | Sealing device for agitated reactor |
| CN102606736A (en) * | 2011-01-21 | 2012-07-25 | 昆山密友机械密封有限公司 | Sealing device for reaction kettles |
| CN203809687U (en) * | 2014-04-08 | 2014-09-03 | 四川大禹机械密封件制造有限公司 | High-temperature high-pressure mechanical seal device for reaction kettle |
| CN105090517A (en) * | 2015-09-14 | 2015-11-25 | 成都赛乐化新机电有限公司 | Mechanical sealing device and method for hydrogenation reaction still |
| CN107339437A (en) * | 2017-08-24 | 2017-11-10 | 唐亚琴 | A kind of mechanical seal structure of reactor agitating shaft |
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2018
- 2018-12-21 CN CN201811574266.1A patent/CN109630686B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1663288A1 (en) * | 1988-09-19 | 1991-07-15 | Дзержинский филиал Ленинградского научно-исследовательского и конструкторского института химического машиностроения | Compound seal |
| CN2115428U (en) * | 1992-03-17 | 1992-09-09 | 曹红蓓 | Zero leak sealer with gas, steam and liquid isolation mechanism |
| CN201944274U (en) * | 2011-01-21 | 2011-08-24 | 昆山密友机械密封有限公司 | Sealing device for agitated reactor |
| CN102606736A (en) * | 2011-01-21 | 2012-07-25 | 昆山密友机械密封有限公司 | Sealing device for reaction kettles |
| CN203809687U (en) * | 2014-04-08 | 2014-09-03 | 四川大禹机械密封件制造有限公司 | High-temperature high-pressure mechanical seal device for reaction kettle |
| CN105090517A (en) * | 2015-09-14 | 2015-11-25 | 成都赛乐化新机电有限公司 | Mechanical sealing device and method for hydrogenation reaction still |
| CN107339437A (en) * | 2017-08-24 | 2017-11-10 | 唐亚琴 | A kind of mechanical seal structure of reactor agitating shaft |
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| CN109630686B (en) | 2020-08-28 |
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