CN114151377A - Chemical pump inner spacer sleeve and preparation method thereof - Google Patents
Chemical pump inner spacer sleeve and preparation method thereof Download PDFInfo
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- CN114151377A CN114151377A CN202111488742.XA CN202111488742A CN114151377A CN 114151377 A CN114151377 A CN 114151377A CN 202111488742 A CN202111488742 A CN 202111488742A CN 114151377 A CN114151377 A CN 114151377A
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- isolation layer
- layer
- ether
- ketone
- sleeve
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- 239000000126 substance Substances 0.000 title claims abstract description 33
- 125000006850 spacer group Chemical group 0.000 title claims description 28
- 238000002360 preparation method Methods 0.000 title description 8
- 238000002955 isolation Methods 0.000 claims abstract description 119
- 238000009413 insulation Methods 0.000 claims abstract description 44
- 239000004696 Poly ether ether ketone Substances 0.000 claims abstract description 42
- 229920002530 polyetherether ketone Polymers 0.000 claims abstract description 42
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 24
- 239000004917 carbon fiber Substances 0.000 claims abstract description 24
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000000956 alloy Substances 0.000 claims abstract description 17
- 238000005260 corrosion Methods 0.000 claims abstract description 17
- 230000007797 corrosion Effects 0.000 claims abstract description 17
- 229910052751 metal Inorganic materials 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 17
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 11
- 239000002184 metal Substances 0.000 claims abstract description 11
- 239000011491 glass wool Substances 0.000 claims abstract description 8
- OBNDGIHQAIXEAO-UHFFFAOYSA-N [O].[Si] Chemical compound [O].[Si] OBNDGIHQAIXEAO-UHFFFAOYSA-N 0.000 claims abstract description 7
- 210000002268 wool Anatomy 0.000 claims abstract description 7
- 239000011248 coating agent Substances 0.000 claims description 19
- 238000000576 coating method Methods 0.000 claims description 19
- 239000000835 fiber Substances 0.000 claims description 18
- 238000007731 hot pressing Methods 0.000 claims description 9
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 238000000748 compression moulding Methods 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 6
- 238000009987 spinning Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 239000012752 auxiliary agent Substances 0.000 claims description 3
- 238000009960 carding Methods 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000013329 compounding Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 238000002074 melt spinning Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 239000003208 petroleum Substances 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- ITRNXVSDJBHYNJ-UHFFFAOYSA-N tungsten disulfide Chemical compound S=[W]=S ITRNXVSDJBHYNJ-UHFFFAOYSA-N 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 235000012239 silicon dioxide Nutrition 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 7
- 239000007769 metal material Substances 0.000 abstract description 6
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 230000004888 barrier function Effects 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910000619 316 stainless steel Inorganic materials 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000009351 contact transmission Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 229910000856 hastalloy Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 239000002609 medium Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000006163 transport media Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/007—Details, component parts, or accessories especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/021—Units comprising pumps and their driving means containing a coupling
- F04D13/024—Units comprising pumps and their driving means containing a coupling a magnetic coupling
- F04D13/025—Details of the can separating the pump and drive area
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/003—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor characterised by the choice of material
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/06—Elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/02—Selection of particular materials
- F04D29/026—Selection of particular materials especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/5806—Cooling the drive system
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
- F04D29/588—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps cooling or heating the machine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
- F04D29/5893—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps heat insulation or conduction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2300/00—Materials; Properties thereof
- F05D2300/40—Organic materials
- F05D2300/43—Synthetic polymers, e.g. plastics; Rubber
- F05D2300/436—Polyetherketones, e.g. PEEK
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2300/00—Materials; Properties thereof
- F05D2300/60—Properties or characteristics given to material by treatment or manufacturing
- F05D2300/603—Composites; e.g. fibre-reinforced
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2300/00—Materials; Properties thereof
- F05D2300/60—Properties or characteristics given to material by treatment or manufacturing
- F05D2300/611—Coating
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Medicinal Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Non-Positive Displacement Air Blowers (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses an inner isolation sleeve of a chemical pump, which comprises: the inner isolation layer is of a cylindrical structure, an annular connecting plate is arranged at the opening end of the inner isolation layer, and a hollow flow guide layer is arranged inside the inner isolation layer; the outer isolation layer is sleeved on the inner isolation layer and is of a cylindrical structure, and the opening end of the outer isolation layer is hermetically connected with the opening end of the inner isolation layer; a thermal insulation layer disposed between the inner insulation layer and the outer insulation layer; the inner isolation layer is made of metal or alloy, the outer isolation layer is made of carbon fiber reinforced polyether ether ketone, the heat insulation layer is one of superfine glass wool, high silicon-oxygen wool and a vacuum heat insulation plate, and the flow guide layer is provided with a water inlet and a water outlet which penetrate through the heat insulation layer and the outer isolation layer. Meanwhile, the inner layer is made of metal or alloy materials, the strength and the corrosion resistance are good, the wall is thin, the flow guide layer is arranged, the effect of dissipating eddy heat can be achieved, the service life of the isolation sleeve is prolonged, the outer isolation layer is made of carbon fiber reinforced polyether ether ketone, and eddy loss generated in the working process of the magnetic circuit can be eliminated.
Description
Technical Field
The invention relates to the technical field of chemical pumps, in particular to an inner isolation sleeve of a chemical pump and a preparation method thereof.
Background
The chemical magnetic pump consists of three parts, including pump, magnetic driver and motor. The key part magnetic driver consists of an outer magnetic rotor, an inner magnetic rotor and a non-magnetic isolating sleeve, when the motor drives the outer magnetic rotor to rotate, a magnetic field can penetrate through an air gap and a non-magnetic substance to drive the inner magnetic rotor connected with an impeller to synchronously rotate, the non-contact transmission of power is realized, and the dynamic seal is converted into the static seal. The pump shaft and the inner magnetic rotor are completely sealed by the pump body and the isolation sleeve, so that the problems of leakage, overflow, dripping and leakage are solved, and the potential safety hazard that inflammable, explosive, toxic and harmful media leak through the pump seal in the oil refining chemical industry is eliminated. Due to the structural particularity of the magnetic coupler of the magnetic pump, the transmission efficiency of the magnetic coupler is generally much lower than that of a traditional mechanical transmission pump, wherein the eddy current loss of the isolation sleeve accounts for a large part.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the chemical pump inner spacer sleeve and the preparation method thereof, the prepared chemical pump inner spacer sleeve is made of metal or alloy materials, the metal or alloy layer is thin in wall and good in strength and corrosion resistance, the spacer sleeve is provided with the flow guide layer, the effect of dissipating eddy heat can be achieved, the service life of the spacer sleeve is prolonged, the outer spacer layer is made of carbon fiber reinforced polyether ether ketone, the eddy loss generated in the working process of a magnetic circuit can be eliminated, and the pump efficiency is improved.
The technical scheme of the invention is as follows:
an inner spacer sleeve of a chemical pump, comprising:
the inner isolation layer is of a cylindrical structure, an annular connecting plate is arranged at the opening end of the inner isolation layer, and a hollow flow guide layer is arranged inside the inner isolation layer;
the outer isolation layer is sleeved on the inner isolation layer and is of a cylindrical structure, and the opening end of the outer isolation layer is hermetically connected with the opening end of the inner isolation layer;
a thermal insulation layer disposed between the inner insulation layer and the outer insulation layer;
the inner isolation layer is made of metal or alloy, the outer isolation layer is made of carbon fiber reinforced polyether ether ketone, the heat insulation layer is one of superfine glass wool, high silicon-oxygen wool and a vacuum heat insulation plate, and the flow guide layer is provided with a water inlet and a water outlet which penetrate through the heat insulation layer and the outer isolation layer.
Preferably, the flow guiding layer is in the shape of a spiral tube.
Preferably, the thickness of the inner barrier layer is 0.5 to 0.8mm and the thickness of the outer barrier layer is 0.5 to 2.2 mm.
Preferably, the water outlet is located on a side near the open end and the water inlet is located on a side remote from the open end.
Preferably, the open ends of annular connecting plate and outer isolation layer all are provided with the connecting hole, and the connecting hole can be connected outer isolation layer and inner isolation layer with the screw cooperation.
Preferably, the inner wall of the inner isolation layer is coated with a corrosion-resistant coating.
Preferably, the corrosion resistant coating comprises one of a silica coating, a tungsten disulfide coating, or a molybdenum disulfide coating.
A preparation method of a separation sleeve in a chemical pump comprises the following steps:
preparing an inner isolation layer, prefabricating the inner isolation layer by adopting metal or alloy, and spraying a corrosion-resistant coating with the thickness of 5-10nm on the inner surface of the inner isolation layer;
preparing an outer isolation layer, obtaining a carbon fiber reinforced polyether-ether-ketone prefabricated body, performing compression molding to obtain an outer isolation sleeve, and bonding an annular sealing sleeve to the opening end of the outer isolation layer;
step three, preparing a heat insulation layer, namely cutting one of superfine glass wool, high silicon-oxygen wool and a vacuum heat insulation plate serving as a raw material according to the sizes of the outer isolation layer and the inner isolation layer, and polishing to obtain the heat insulation layer;
step four, opening holes, namely opening holes in the heat insulation layer and the outer isolation layer, wherein the hole diameter of the hole is matched with the water inlet pipe and the water outlet pipe of the inner isolation layer, and opening holes in the opening end of the outer isolation layer and the annular connecting plate to obtain a connecting hole;
step five, multilayer compounding, namely coating an adhesive on the outer wall of the inner isolation layer, adhering the heat insulation layer on the outer wall of the inner isolation layer, and sleeving the outer isolation layer outside the heat insulation layer;
and step six, connection and fixation, namely, the annular connecting plate is connected with the opening end of the outer isolation layer by utilizing the matching connection of a screw and the connecting hole.
Preferably, the process for obtaining the carbon fiber reinforced polyetheretherketone preform specifically comprises:
drying the polyether-ether-ketone resin particles at the high temperature of 100-110 ℃ for 6-8 hours, and then carrying out melt spinning at the spinning temperature of 350-400 ℃ and the spinning speed of 0.1-1km/min to obtain polyether-ether-ketone fibers;
stretching the polyether-ether-ketone fiber at the high temperature of 200-220 ℃, and winding to obtain polyether-ether-ketone fiber multifilament;
cutting the polyether-ether-ketone fiber multifilament into polyether-ether-ketone long fibers with the length of 30-40mm, and cleaning with petroleum ether to remove the auxiliary agent residues;
mixing, carding, lapping and needling the polyether-ether-ketone long fiber and the carbon fiber according to the proportion of 1:0.5-2 to prepare the three-dimensional reticular carbon fiber reinforced polyether-ether-ketone prefabricated body.
Preferably, the compression molding process comprises:
burying the carbon fiber reinforced polyether-ether-ketone prefabricated body into an outer isolation sleeve grinding tool, and performing vacuum hot press molding;
the temperature control equation in the vacuum hot pressing process is as follows:
wherein T represents the hot pressing temperature and T represents the hot pressing time.
The invention has the beneficial effects that:
the invention provides a chemical pump inner spacer sleeve and a preparation method thereof, the prepared chemical pump inner spacer sleeve inner layer is made of metal or alloy materials, the metal or alloy layer wall is thin, the strength and the corrosion resistance are good, the spacer sleeve inner layer is provided with a flow guide layer, the effect of dissipating eddy heat can be achieved, the service life of the spacer sleeve is prolonged, the outer spacer layer is made of carbon fiber reinforced polyether ether ketone, the eddy loss generated in the working process of a magnetic circuit can be eliminated, and the pump efficiency is improved.
Drawings
Fig. 1 is a schematic cross-sectional view of an isolation sleeve in a chemical pump according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of an isolation sleeve in a chemical pump according to an embodiment of the present invention.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "in" and the like refer to directions or positional relationships based on the directions or positional relationships illustrated in the drawings, which are for convenience of description only, and do not indicate or imply that a device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; may be a mechanical connection; 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 by those skilled in the art according to specific situations.
As shown in fig. 1-2, an inner insulation sleeve of a chemical pump comprises an inner insulation layer 100, an outer insulation layer 200 and an insulation layer 300. The inner isolation layer 100 is of a cylindrical structure, an annular connecting plate 110 is arranged at the opening end of the inner isolation layer, a hollow flow guide layer 120 is arranged in the inner isolation layer, the outer isolation layer 200 is sleeved on the inner isolation layer 100 and is of a cylindrical structure, the opening end of the outer isolation layer 200 is connected with the opening end of the inner isolation layer 100 in a sealing mode, and the heat insulation layer 300 is arranged between the inner isolation layer 100 and the outer isolation layer 200.
The inner isolation layer 100 is made of metal or alloy, the outer isolation layer 200 is made of carbon fiber reinforced polyether ether ketone, the heat insulation layer 300 is one of ultra-fine glass wool, high silicon-oxygen wool and a vacuum heat insulation plate, and the flow guide layer 120 is provided with a water inlet and a water outlet which penetrate through the heat insulation layer 300 and the outer isolation layer 200.
In a preferred embodiment, the flow guiding layer 120 is in the shape of a spiral tube.
The inner isolation layer 100 is made of metal or alloy materials, the temperature of the jacket wall can be increased due to the magnetic eddy heat generated in the alternating magnetic field, and the pump cannot normally operate due to the fact that the magnetic rotor is demagnetized due to the heat in serious conditions, so that the hollow diversion layer 120 is arranged in the inner isolation layer 100, the outer water circulation system is connected through the water inlet and the water outlet, the generated eddy heat is taken away in time, and the effect of cooling the isolation jacket can be achieved.
In a preferred embodiment, the inner insulating layer 100 is made of metal or alloy, the outer insulating layer 200 is made of carbon fiber reinforced polyetheretherketone, and the insulating layer 300 is one of ultra-fine glass wool, high silicon cotton, and vacuum insulation panel.
In a preferred embodiment, the inner isolation layer 100 may be made of 1Cr18Ni9Ti, hastelloy, 316 stainless steel, titanium alloy, or the like.
The invention relates to an inner isolation sleeve of a chemical pump, wherein an inner isolation layer 100 is made of metal or alloy materials, and has enough strength structurally, an outer isolation layer is made of carbon fiber reinforced polyether-ether-ketone to replace an isolation sleeve made of all metal or all alloy, so that the eddy loss of the chemical pump during working can be reduced.
In a preferred embodiment, the inner barrier layer 100 has a thickness of 0.5 to 0.8mm and the outer barrier layer 200 has a thickness of 0.5 to 2.2 mm.
In a preferred embodiment, the inner barrier layer 100 has a thickness of 0.6mm and the outer barrier layer 200 has a thickness of 1.2 mm.
In a preferred embodiment, the water outlet 122 is located on a side near the open end, and the water inlet 121 is located on a side away from the open end.
In a preferred embodiment, the open ends of the annular connecting plate 110 and the outer isolation layer 200 are provided with connecting holes 111, and the connecting holes 111 are matched with screws to connect the outer isolation layer 200 and the inner isolation layer 110.
In a preferred embodiment, the inner wall of the inner barrier layer 100 is coated with a corrosion-resistant coating.
A preferred embodiment is where the corrosion resistant coating comprises one of a silica coating, a tungsten disulfide coating or a molybdenum disulfide coating.
Because the effect of interior magnetic rotor rotation in the isolation cover, the transport medium has certain linear velocity to produce circumference power and tangent line power, erode and strike isolation cover internal surface, the friction of material with higher speed, wearing and tearing and performance decay, simultaneously, still some other corrosion problems such as electrochemical corrosion, intercrystalline corrosion, oxidation corrosion can appear in the in-process of medium motion, consequently, the spraying corrosion resistant coating on the inner wall of interior isolation layer can effectively prolong the life of isolation cover, guarantee chemical pump's safe handling.
A preparation method of a separation sleeve in a chemical pump comprises the following steps:
preparing an inner isolation layer, prefabricating the inner isolation layer by adopting metal or alloy, and spraying a corrosion-resistant coating with the thickness of 5-10nm on the inner surface of the inner isolation layer;
preparing an outer isolation layer, obtaining a carbon fiber reinforced polyether-ether-ketone prefabricated body, performing compression molding to obtain an outer isolation sleeve, and bonding an annular sealing sleeve to the opening end of the outer isolation layer;
step three, preparing a heat insulation layer, namely cutting one of superfine glass wool, high silicon-oxygen wool and a vacuum heat insulation plate serving as a raw material according to the sizes of the outer isolation layer and the inner isolation layer, and polishing to obtain the heat insulation layer;
step four, opening holes, namely opening holes in the heat insulation layer and the outer isolation layer, wherein the hole diameter of the hole is matched with the water inlet pipe and the water outlet pipe of the inner isolation layer, and opening holes in the opening end of the outer isolation layer and the annular connecting plate to obtain a connecting hole;
step five, multilayer compounding, namely coating an adhesive on the outer wall of the inner isolation layer, adhering the heat insulation layer on the outer wall of the inner isolation layer, and sleeving the outer isolation layer outside the heat insulation layer;
and step six, connection and fixation, namely, the annular connecting plate is connected with the opening end of the outer isolation layer by utilizing the matching connection of a screw and the connecting hole.
Preferably, the process for obtaining the carbon fiber reinforced polyetheretherketone preform specifically comprises:
drying the polyether-ether-ketone resin particles at the high temperature of 100-110 ℃ for 6-8 hours, and then carrying out melt spinning at the spinning temperature of 350-400 ℃ and the spinning speed of 0.1-1km/min to obtain polyether-ether-ketone fibers;
stretching the polyether-ether-ketone fiber at the high temperature of 200-220 ℃, and winding to obtain polyether-ether-ketone fiber multifilament;
cutting the polyether-ether-ketone fiber multifilament into polyether-ether-ketone long fibers with the length of 30-40mm, and cleaning with petroleum ether to remove the auxiliary agent residues;
mixing, carding, lapping and needling the polyether-ether-ketone long fiber and the carbon fiber according to the proportion of 1:0.5-2 to prepare the three-dimensional reticular carbon fiber reinforced polyether-ether-ketone prefabricated body.
Preferably, the compression molding process comprises:
burying the carbon fiber reinforced polyether-ether-ketone prefabricated body into an outer isolation sleeve grinding tool, and performing vacuum hot press molding;
the temperature control equation in the vacuum hot pressing process is as follows:
wherein T represents the hot pressing temperature and T represents the hot pressing time.
Compared with the prior art, the technical scheme provided by the embodiment of the invention at least has the following advantages or beneficial effects:
the invention provides a chemical pump inner spacer sleeve and a preparation method thereof, the prepared chemical pump inner spacer sleeve inner layer is made of metal or alloy materials, the metal or alloy layer wall is thin, the strength and the corrosion resistance are good, the spacer sleeve inner layer is provided with a flow guide layer, the effect of dissipating eddy heat can be achieved, the service life of the spacer sleeve is prolonged, the outer spacer layer is made of carbon fiber reinforced polyether ether ketone, the eddy loss generated in the working process of a magnetic circuit can be eliminated, and the pump efficiency is improved.
The above descriptions are only examples of the present invention, and common general knowledge of known specific structures, characteristics, and the like in the schemes is not described herein too much, and it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Without departing from the invention, several changes and modifications can be made, which should also be regarded as the protection scope of the invention, and these will not affect the effect of the invention and the practicality of the patent.
Claims (10)
1. The utility model provides a separation sleeve in chemical pump which characterized in that includes:
the inner isolation layer is of a cylindrical structure, an annular connecting plate is arranged at the opening end of the inner isolation layer, and a hollow flow guide layer is arranged inside the inner isolation layer;
the outer isolation layer is sleeved on the inner isolation layer and is of a cylindrical structure, and the open end of the outer isolation layer is hermetically connected with the open end of the inner isolation layer;
a thermal insulation layer disposed between the inner and outer insulation layers;
the heat insulation layer is made of one of superfine glass wool, high silicon-oxygen wool and a vacuum heat insulation plate, and the flow guide layer is provided with a water inlet and a water outlet which penetrate through the heat insulation layer and the outer isolation layer.
2. The spacer sleeve in the chemical pump according to claim 1, wherein the flow guide layer is in a spiral pipe shape.
3. The chemical pump inner spacer sleeve of claim 2, wherein the thickness of the inner spacer layer is 0.5-0.8mm, and the thickness of the outer spacer layer is 0.5-2.2 mm.
4. The spacer sleeve in the chemical pump according to claim 3, wherein the water outlet is located at a side close to the open end, and the water inlet is located at a side far from the open end.
5. The isolation sleeve in the chemical pump is characterized in that the opening ends of the annular connecting plate and the outer isolation layer are provided with connecting holes, and the outer isolation layer and the inner isolation layer can be connected through the connecting holes and screws in a matched mode.
6. The spacer sleeve in the chemical pump according to claim 5, wherein a corrosion-resistant coating is sprayed on the inner wall of the inner spacer layer.
7. The spacer sleeve inside a chemical pump as defined in claim 6, wherein the corrosion-resistant coating comprises one of a silicon dioxide coating, a tungsten disulfide coating, or a molybdenum disulfide coating.
8. A method for preparing an inner spacer sleeve of a chemical pump according to any one of claims 1 to 7, comprising the following steps:
preparing the inner isolation layer, prefabricating the inner isolation layer by adopting metal or alloy, and spraying a corrosion-resistant coating with the thickness of 5-10nm on the inner surface of the inner isolation layer;
step two, preparing the outer isolation layer to obtain a carbon fiber reinforced polyether-ether-ketone prefabricated body, performing compression molding to obtain the outer isolation sleeve, and bonding an annular sealing sleeve at the opening end of the outer isolation layer;
step three, preparing a heat insulation layer, namely cutting one of superfine glass wool, high silicon-oxygen wool and a vacuum heat insulation plate serving as a raw material according to the sizes of the outer isolation layer and the inner isolation layer, and polishing to obtain the heat insulation layer;
step four, opening holes, namely opening holes in the heat insulation layer and the outer isolation layer, wherein the hole diameter of the hole is matched with the water inlet pipe and the water outlet pipe of the inner isolation layer, and opening holes in the opening end of the outer isolation layer and the annular connecting plate to obtain the connecting hole;
fifthly, multilayer compounding, namely coating an adhesive on the outer wall of the inner isolation layer, adhering the thermal insulation layer on the outer wall of the inner isolation layer, and then sleeving the outer isolation layer outside the thermal insulation layer;
and step six, connection and fixation, namely, the annular connecting plate is connected with the opening end of the outer isolation layer by utilizing the matching connection of a screw and the connecting hole.
9. The method for preparing the spacer bush in the chemical pump according to claim 8, wherein the process for obtaining the carbon fiber reinforced polyetheretherketone preform specifically comprises:
drying the polyether-ether-ketone resin particles at the high temperature of 100-110 ℃ for 6-8 hours, and then carrying out melt spinning at the spinning temperature of 350-400 ℃ and the spinning speed of 0.1-1km/min to obtain polyether-ether-ketone fibers;
stretching the polyether-ether-ketone fiber at the high temperature of 200-220 ℃, and winding to obtain polyether-ether-ketone fiber multifilament;
cutting the polyether-ether-ketone fiber multifilament into polyether-ether-ketone long fibers with the length of 30-40mm, and cleaning with petroleum ether to remove auxiliary agent residues;
mixing the polyether-ether-ketone long fiber with carbon fiber according to the proportion of 1:0.5-2, carding, lapping and needling to prepare the three-dimensional reticular carbon fiber reinforced polyether-ether-ketone prefabricated body.
10. The method for preparing the isolating sleeve in the chemical pump as claimed in claim 9, wherein the compression molding process comprises:
burying the carbon fiber reinforced polyether-ether-ketone prefabricated body into the outer isolation sleeve grinding tool, and performing vacuum hot press molding;
the temperature control equation in the vacuum hot pressing process is as follows:
wherein T represents the hot pressing temperature and T represents the hot pressing time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111488742.XA CN114151377A (en) | 2021-12-07 | 2021-12-07 | Chemical pump inner spacer sleeve and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111488742.XA CN114151377A (en) | 2021-12-07 | 2021-12-07 | Chemical pump inner spacer sleeve and preparation method thereof |
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| CN114151377A true CN114151377A (en) | 2022-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111488742.XA Pending CN114151377A (en) | 2021-12-07 | 2021-12-07 | Chemical pump inner spacer sleeve and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024140529A1 (en) * | 2022-12-27 | 2024-07-04 | 上海空间推进研究所 | Cryogenic canned pump and thermal insulation structure thereof |
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| CN208885600U (en) * | 2018-07-19 | 2019-05-21 | 太仓市磁力驱动泵有限公司 | A kind of carbon fiber reinforced polyether-ether-ketone composite insulating sleeve |
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| CN201818533U (en) * | 2010-09-25 | 2011-05-04 | 太仓顺达磁力泵科技有限公司 | Isolation sleeve of high strength magnetic drive pump |
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| WO2024140529A1 (en) * | 2022-12-27 | 2024-07-04 | 上海空间推进研究所 | Cryogenic canned pump and thermal insulation structure thereof |
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