CN110566444A - diaphragm for diaphragm compressor and method for prolonging service life of diaphragm - Google Patents
diaphragm for diaphragm compressor and method for prolonging service life of diaphragm Download PDFInfo
- Publication number
- CN110566444A CN110566444A CN201910898875.0A CN201910898875A CN110566444A CN 110566444 A CN110566444 A CN 110566444A CN 201910898875 A CN201910898875 A CN 201910898875A CN 110566444 A CN110566444 A CN 110566444A
- Authority
- CN
- China
- Prior art keywords
- diaphragm
- coating
- substrate membrane
- pressure
- membrane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000000576 coating method Methods 0.000 claims abstract description 114
- 239000011248 coating agent Substances 0.000 claims abstract description 110
- 239000012528 membrane Substances 0.000 claims abstract description 66
- 239000000758 substrate Substances 0.000 claims abstract description 53
- 238000005260 corrosion Methods 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims description 26
- 230000033228 biological regulation Effects 0.000 claims description 23
- 229910001220 stainless steel Inorganic materials 0.000 claims description 16
- 239000010935 stainless steel Substances 0.000 claims description 16
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 claims description 9
- 229910052799 carbon Inorganic materials 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 5
- 239000003822 epoxy resin Substances 0.000 claims description 5
- 229920001568 phenolic resin Polymers 0.000 claims description 5
- 239000005011 phenolic resin Substances 0.000 claims description 5
- 229920000647 polyepoxide Polymers 0.000 claims description 5
- 239000011527 polyurethane coating Substances 0.000 claims description 5
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 5
- 239000010936 titanium Substances 0.000 claims description 5
- 229910052719 titanium Inorganic materials 0.000 claims description 5
- 230000001276 controlling effect Effects 0.000 claims description 4
- 230000009123 feedback regulation Effects 0.000 claims description 4
- 229910052755 nonmetal Inorganic materials 0.000 claims description 4
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 3
- 229910000856 hastalloy Inorganic materials 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical group [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 2
- 238000005524 ceramic coating Methods 0.000 claims description 2
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 239000011651 chromium Substances 0.000 claims description 2
- 229910052715 tantalum Inorganic materials 0.000 claims description 2
- 239000002253 acid Substances 0.000 abstract description 7
- 238000005299 abrasion Methods 0.000 abstract description 5
- 230000032683 aging Effects 0.000 abstract description 3
- 239000003513 alkali Substances 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 29
- 239000003921 oil Substances 0.000 description 26
- 239000010410 layer Substances 0.000 description 17
- 239000002585 base Substances 0.000 description 9
- 230000007797 corrosion Effects 0.000 description 9
- 239000010720 hydraulic oil Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000007906 compression Methods 0.000 description 5
- 230000035882 stress Effects 0.000 description 5
- 239000012535 impurity Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 239000010963 304 stainless steel Substances 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- QZPSXPBJTPJTSZ-UHFFFAOYSA-N aqua regia Chemical compound Cl.O[N+]([O-])=O QZPSXPBJTPJTSZ-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 239000012948 isocyanate Substances 0.000 description 2
- 150000002513 isocyanates Chemical class 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/12—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D161/00—Coating compositions based on condensation polymers of aldehydes or ketones; Coating compositions based on derivatives of such polymers
- C09D161/04—Condensation polymers of aldehydes or ketones with phenols only
- C09D161/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B45/00—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
- F04B45/04—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms
- F04B45/053—Pumps having fluid drive
- F04B45/0533—Pumps having fluid drive the fluid being actuated directly by a piston
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention discloses a diaphragm for a diaphragm compressor and a method for prolonging the service life of the diaphragm, and relates to the field of diaphragm compressors. Including the diaphragm compressor, still include: a substrate membrane; the first coating covers one side of the substrate membrane, and the side is set as an oil side; the second coating covers one side of the substrate membrane opposite to the first coating, and the side is set to be an air side; the middle layer is arranged between the first coating and the substrate membrane and between the second coating and the substrate membrane; the first anti-corrosion coating covers one side, far away from the substrate membrane, of the first coating; and the second anti-corrosion coating covers one side of the second coating, which is far away from the substrate membrane. The hardness of the membrane is enhanced, and the membrane has the characteristics of abrasion resistance, strong acid and strong alkali resistance, and resistance to damp, heat and aging.
Description
Technical Field
The invention relates to the field of diaphragm compressors, in particular to a diaphragm for a diaphragm compressor and a method for prolonging the service life of the diaphragm.
background
The diaphragm compressor is a positive displacement compressor with special structure, and features large compression ratio, good sealing performance, and no pollution of compressed gas by lubricating oil and other solid impurities. The gas compressor is widely applied to compressing and conveying various gases with high purity, rareness, nobility, inflammability, explosiveness, toxicity, corrosiveness, high pressure and the like.
The specific working process of the diaphragm compressor is that when the piston reaches a top dead center, the hydraulic oil pressure at the lower side of the diaphragm reaches the maximum value, and the diaphragm is tightly attached to the curved surface of the die cavity; when the pressure of the gas is lower than the external pressure, the air inlet valve is opened to start air inlet; the diaphragm is attached to the lower support plate part along with the movement of the piston to the lower dead point, and the air inlet is finished; then the piston starts to move upwards and pushes the diaphragm to compress gas through hydraulic oil, and when the pressure in the diaphragm cavity reaches the exhaust pressure, the exhaust valve is opened to start exhausting; and finally, the diaphragm is pushed by hydraulic oil to be tightly attached to the curved surface of the diaphragm cavity, and after the exhaust is finished, a working cycle is completed in the diaphragm cavity.
Further, for a multi-stage compression diaphragm compressor, in engineering calculations and design, the compression ratio of each stage has been determined by the highest hydraulic oil pressure setting on the diaphragm oil side of each stage; the diaphragm specifications for each stage are selected and configured for design points for specific operating conditions and capabilities, the intermediate stage and final exhaust gas cooler specifications are designed and configured, and the crankcase specifications are configured according to piston thrust and total crankshaft power.
If the inlet pressure changes too much, not only a series of imbalances will result, but frequent rupture of the diaphragm will also result. Because under the condition of too low back pressure, the determined oil pressure of the oil side of the diaphragm, when the piston pushes the diaphragm to move towards the air side through the hydraulic oil each time, the diaphragm is finally attached to the curved surface of the diaphragm cavity of the air side, and the service life of the diaphragm is greatly shortened.
Therefore, it can be seen that the relative stability of the inlet pressure and the outlet pressure of the diaphragm compressor is an essential factor for ensuring the smooth operation of the diaphragm compressor without failure. The multistage-compression diaphragm compressor can ensure the relative stability of the intake pressure and the exhaust pressure after once only ensuring the relative stability of the intake pressure and the exhaust pressure from the first set, and can ensure the heat exchange balance and the piston force balance of the multistage-compression diaphragm compressor.
moreover, the characteristics of the diaphragm of a diaphragm compressor, in itself, determine the degree of durability of the diaphragm. The strength of the membrane should therefore be continuously increased and a method for increasing the service life of the membrane should be provided.
Disclosure of Invention
the invention aims to: the diaphragm for the diaphragm compressor and the method for prolonging the service life of the diaphragm are provided, and the problems that in the working process of the existing diaphragm compressor, the intake pressure and the exhaust pressure are often unstable due to improper use, and the diaphragm is cracked due to the fact that the hardness and the corrosion resistance of the diaphragm are not related are solved.
The technical scheme adopted by the invention is as follows:
a diaphragm for diaphragm compressor, includes diaphragm compressor, still includes:
A substrate membrane;
The first coating covers one side of the substrate membrane, and the side is set as an oil side;
The second coating covers one side of the substrate membrane opposite to the first coating, and the side is set to be an air side;
The middle layer is arranged between the first coating and the substrate membrane and between the second coating and the substrate membrane;
The first anti-corrosion coating covers one side, far away from the substrate membrane, of the first coating;
And the second anti-corrosion coating covers one side of the second coating, which is far away from the substrate membrane.
The gas side, the oil side and the middle layer of the diaphragm are respectively made of different materials, and the gas side and the oil side are in direct contact with gas and hydraulic oil, so that the gas side is provided with a first anticorrosive coating, the oil side is provided with a second anticorrosive coating, and the substrate diaphragm is integrally and completely packaged through the first anticorrosive coating and the second anticorrosive coating. When the first coating, the second coating, the first anticorrosive coating and the second anticorrosive coating are coated on the membrane, only a tool is needed to uniformly coat the coating on the substrate membrane, the coating thickness is uniform, no bubble is left, and the coating process is not complicated.
It should be noted that the smoothness of the diaphragm should be ensured, and after the first anti-corrosion coating and the second anti-corrosion coating are coated, the diaphragm is polished and the like to ensure the smoothness of the surface of the diaphragm and no impurities, so as to reduce stress concentration. The thickness of the diaphragm is strictly controlled according to the condition of the diaphragm compressor, the thickness of the diaphragm is inversely proportional to the stress, and the thickness of the diaphragm is set to be 0.4mm-0.5 mm.
further, the substrate membrane is a 316L stainless steel substrate membrane, or a hastelloy substrate membrane, or a tantalum metal substrate membrane, or a nickel metal substrate membrane, or a titanium metal substrate membrane, or a zirconium metal substrate membrane, or a platinum metal substrate membrane.
the base material diaphragm can be made of more materials, and particularly when the middle layer is a metal layer, the middle layer is made of the same material as the base material diaphragm or the material with the similar heat conductivity coefficient, so that a large amount of heat cannot be accumulated inside the diaphragm in the working process of the full-enclosed diaphragm compressor, and the service life of the diaphragm is prolonged from the side. Of course, the most commonly used material for the substrate membrane is 316L stainless steel, the 316L stainless steel is a stainless steel containing molybdenum, the total performance of the 316L stainless steel is better than that of 310 stainless steel and 304 stainless steel, the 316L stainless steel has certain corrosion resistance, and the thermal conductivity coefficient of the 316L stainless steel is about 16.2W/m.K at normal temperature.
Further, the first coating is a DLC coating, including but not limited to tetrahedral diamond-like carbon and amorphous hydrogenated diamond-like carbon.
Wherein the second coating is the same as the first coating.
the DLC coating is a substance which is composed of carbon elements, is similar to diamond in properties and has a graphite atom composition structure; is an amorphous film, is very suitable for being used as an abrasion-resistant coating due to high hardness and high elastic modulus, low friction factor, abrasion resistance and good vacuum tribological characteristics. DLC coatings have excellent corrosion resistance and are difficult to attack by various acids, alkalis and even aqua regia.
Further, the intermediate layer is a metal layer or an inorganic non-metal layer, and the metal layer is titanium, tantalum or chromium; the inorganic non-metal layer is an alumina ceramic coating.
Further, the first anti-corrosion coating comprises a phenolic resin coating and a fluorocarbon coating which are sequentially arranged from inside to outside.
The phenolic resin coating has good corrosion resistance and corrosion resistance to acid, alkali and salt; the fluorocarbon coating is a water-based double-grouping fluorocarbon coating which is obtained by using water-based fluorocarbon emulsion as a base material and matching with a water-based isocyanate curing agent and has excellent weather resistance, adhesion and humidity, heat and aging resistance. According to the characteristics of the anticorrosive material selected for the first anticorrosive coating, the first anticorrosive coating is suitable for the oil side of the membrane.
Further, the second anticorrosive coating comprises an epoxy resin coating and a double-component polyurethane coating which are sequentially arranged from inside to outside.
The epoxy resin coating has the characteristic of resisting concentrated acid, even concentrated sulfuric acid with the concentration of 98%, is convenient to coat, can be directly coated by a brush or a roller, and has excellent bonding characteristic; the two-component polyurethane coating has the advantages of low film forming temperature, strong adhesive force, good wear resistance, high hardness, good chemical resistance and weather resistance and the like. According to the characteristics of the anticorrosive material selected for the second anticorrosive coating, the second anticorrosive coating is suitable for the gas side of the membrane.
The invention also provides a method for improving the service life of a diaphragm, comprising the diaphragm compressor and the diaphragm as claimed in claims 1 to 7, further comprising a regulating system and the following steps:
s1: arranging a pressure reducing valve at one end of an air inlet pipeline of the diaphragm compressor, which is far away from the diaphragm compressor, wherein the pressure reducing valve is electrically connected with a regulation and control system;
S2: arranging a back pressure valve at one end of an exhaust pipeline of the diaphragm compressor, which is far away from the diaphragm compressor, wherein the back pressure valve is electrically connected with a regulation and control system;
S3: pressure transmitters are arranged on both the oil side and the gas side of the diaphragm, and pressure data acquired by the pressure transmitters are converted into standard electric signals and transmitted to a regulation and control system;
S4: and the regulating and controlling system carries out feedback regulation on the pressure reducing valve and the back pressure valve.
the diaphragm compressor is provided with a pressure reducing valve, so that the diaphragm compressor has relatively stable air inlet pressure by adjusting the pressure reducing valve, and the air outlet pressure is automatically kept stable by depending on the characteristics of a medium. Then, the pressure fluctuation behind the pressure reducing valve is balanced with the spring force in the diaphragm compressor by means of the regulation of the regulating system, and the pressure fluctuation behind the pressure reducing valve is limited within a certain range and kept constant within a certain error range.
The diaphragm compressor is provided with a back pressure valve, and the diaphragm compressor has relatively stable exhaust air pressure by adjusting the back pressure valve and can play a role in cutting off and throttling; the pressure required by the pipeline is maintained in the unstable state of the pressure of the pipeline or the equipment container, the pressure fluctuation behind the back pressure valve is limited within a certain range and is kept constant within a certain error range, and the diaphragm compressor can output flow normally.
the electrical work flow of the regulation and control system, the oil side pressure transmitter, the gas side pressure transmitter, the pressure reducing valve and the back pressure valve is as follows: the oil side pressure transmitter and the gas side pressure transmitter can acquire oil side pressure data and gas side pressure data in real time in the working process of the diaphragm compressor, convert the oil side pressure data and the gas side pressure data into respective standard electric signals and transmit the standard electric signals to the regulation and control system, after the regulation and control system receives the standard electric signals, pressure regulation is carried out on one side generating the standard electric signals according to a preset threshold value, namely the gas side pressure data is large, the pressure reducing valve is started to regulate and control inlet pressure, and if the oil side pressure data is large, the back pressure valve is started to regulate outlet pressure.
in summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. The invention relates to a diaphragm for a diaphragm compressor and a method for prolonging the service life of the diaphragm. And the smoothness and the absence of impurities of the surface of the diaphragm are ensured in the processing process so as to reduce stress concentration. The design life of the membrane is 5000-8000 hours.
2. the invention relates to a diaphragm for a diaphragm compressor and a method for prolonging the service life of the diaphragm, which are provided with a regulation system, an oil side pressure transmitter, a gas side pressure transmitter, a pressure reducing valve and a back pressure valve which are electrically connected with the regulation system, wherein pressure data acquired by the pressure transmitter is converted into electric signals and transmitted to the regulation system, and the regulation system carries out feedback regulation on the pressure reducing valve and the back pressure valve so as to control the air inlet pressure and the air outlet pressure to keep constant within a certain error range. The service life of the diaphragm compressor is prolonged from the aspect of good and healthy use modes.
drawings
the invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a schematic view of a diaphragm of the present invention;
FIG. 2 is a flow chart of the operation of the conditioning system of the present invention;
in the figure, 1-substrate membrane, 2-first coating, 3-second coating, 4-intermediate layer, 5-first anticorrosion coating, 6-second anticorrosion coating.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
it is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The present invention will be described in detail with reference to fig. 1.
Example 1
A diaphragm for a diaphragm compressor, comprising a diaphragm compressor, as shown in fig. 1, further comprising:
A base material film sheet 1;
the first coating 2 covers one side of the base material membrane 1, and the side is set to be an oil side;
The second coating 3 covers one side, opposite to the first coating 2, of the substrate membrane 1, and the side is set to be an air side;
an intermediate layer 4, the intermediate layer 4 being disposed between the first coating layer 2 and the substrate membrane 1, and between the second coating layer 3 and the substrate membrane 1;
the first anti-corrosion coating 5 covers one side, far away from the base material membrane 1, of the first coating 2;
And the second anticorrosive coating 6 covers one side, far away from the substrate membrane 1, of the second coating 3.
the gas side, the oil side and the middle layer 4 of the diaphragm are respectively made of different materials, and the gas side and the oil side are in direct contact with gas and hydraulic oil, so that the gas side is provided with a first anticorrosive coating 5, the oil side is provided with a second anticorrosive coating 6, and the substrate diaphragm 1 is integrally and completely packaged through the first anticorrosive coating 5 and the second anticorrosive coating 6. When the first coating 2, the second coating 3, the first anticorrosive coating 5 and the second anticorrosive coating 6 are coated on the membrane, only a tool is needed to uniformly coat the coating on the substrate membrane 1, the coating thickness is uniform, no bubble is left, and the coating process is not complicated.
Example 2
This example is a supplementary explanation of example 1.
it should be noted that the smoothness of the diaphragm should be ensured, and after the first anti-corrosion coating 5 and the second anti-corrosion coating 6 are coated, the diaphragm is polished and the like to ensure the smoothness of the diaphragm surface and no impurities, so as to reduce stress concentration. The thickness of the diaphragm is strictly controlled according to the condition of the diaphragm compressor, the thickness of the diaphragm is inversely proportional to the stress, and the thickness of the diaphragm is set to be 0.4mm-0.5 mm.
Example 3
The substrate membrane 1 is a 316L stainless steel substrate membrane, or a hastelloy substrate membrane, or a tantalum metal substrate membrane, or a nickel metal substrate membrane, or a titanium metal substrate membrane, or a zirconium metal substrate membrane, or a platinum metal substrate membrane.
The base material diaphragm 1 can be made of more materials, and particularly when the middle layer 4 is a metal layer, the middle layer 4 is made of the same material as the base material diaphragm 1 or the material with the similar heat conductivity coefficient, so that a large amount of heat cannot be accumulated inside the diaphragm in the working process of the full-enclosed diaphragm compressor, and the service life of the diaphragm is prolonged from the side face. Of course, the most commonly used material for the substrate membrane 1 is 316L stainless steel, 316L stainless steel is a kind of stainless steel containing molybdenum, and the total performance of 316L stainless steel is better than 310 stainless steel and 304 stainless steel, and has a certain corrosion resistance, and the thermal conductivity coefficient of 316L stainless steel is about 16.2W/m · K at normal temperature.
Example 4
The first coating 2 is a DLC coating including, but not limited to, tetrahedral diamond-like carbon and amorphous hydrogenated diamond-like carbon.
wherein the second coating 3 is identical to the first coating 2.
The DLC coating is a substance which is composed of carbon elements, is similar to diamond in properties and has a graphite atom composition structure; is an amorphous film, is very suitable for being used as an abrasion-resistant coating due to high hardness and high elastic modulus, low friction factor, abrasion resistance and good vacuum tribological characteristics. DLC coatings have excellent corrosion resistance and are difficult to attack by various acids, alkalis and even aqua regia.
Example 5
The first anticorrosive coating 5 comprises a phenolic resin coating and a fluorocarbon coating which are sequentially arranged from inside to outside.
The phenolic resin coating has good corrosion resistance and corrosion resistance to acid, alkali and salt; the fluorocarbon coating is a water-based double-grouping fluorocarbon coating which is obtained by using water-based fluorocarbon emulsion as a base material and matching with a water-based isocyanate curing agent and has excellent weather resistance, adhesion and humidity, heat and aging resistance. According to the characteristics of the anticorrosive material selected for the first anticorrosive coating 5, the first anticorrosive coating 5 is suitable for the oil side of the membrane.
Example 6
The second anticorrosive coating 6 comprises an epoxy resin coating and a double-component polyurethane coating which are sequentially arranged from inside to outside.
The epoxy resin coating has the characteristic of resisting concentrated acid, even concentrated sulfuric acid with the concentration of 98%, is convenient to coat, can be directly coated by a brush or a roller, and has excellent bonding characteristic; the two-component polyurethane coating has the advantages of low film forming temperature, strong adhesive force, good wear resistance, high hardness, good chemical resistance and weather resistance and the like. According to the characteristics of the anticorrosive material selected for the second anticorrosive coating 6, the second anticorrosive coating 6 is suitable for the gas side of the membrane.
Example 7
the method for prolonging the service life of the diaphragm comprises the diaphragm compressor and the diaphragm, and further comprises a regulating and controlling system and the following steps:
S1: arranging a pressure reducing valve at one end of an air inlet pipeline of the diaphragm compressor, which is far away from the diaphragm compressor, wherein the pressure reducing valve is electrically connected with a regulation and control system;
S2: arranging a back pressure valve at one end of an exhaust pipeline of the diaphragm compressor, which is far away from the diaphragm compressor, wherein the back pressure valve is electrically connected with a regulation and control system;
S3: pressure transmitters are arranged on both the oil side and the gas side of the diaphragm, and pressure data acquired by the pressure transmitters are converted into standard electric signals and transmitted to a regulation and control system;
S4: and the regulating and controlling system carries out feedback regulation on the pressure reducing valve and the back pressure valve.
The diaphragm compressor is provided with a pressure reducing valve, so that the diaphragm compressor has relatively stable air inlet pressure by adjusting the pressure reducing valve, and the air outlet pressure is automatically kept stable by depending on the characteristics of a medium. Then, the pressure fluctuation behind the pressure reducing valve is balanced with the spring force in the diaphragm compressor by means of the regulation of the regulating system, and the pressure fluctuation behind the pressure reducing valve is limited within a certain range and kept constant within a certain error range.
the diaphragm compressor is provided with a back pressure valve, and the diaphragm compressor has relatively stable exhaust air pressure by adjusting the back pressure valve and can play a role in cutting off and throttling; the pressure required by the pipeline is maintained in the unstable state of the pressure of the pipeline or the equipment container, the pressure fluctuation behind the back pressure valve is limited within a certain range and is kept constant within a certain error range, and the diaphragm compressor can output flow normally.
Example 8
This example is a supplementary explanation of example 7.
As shown in fig. 2, the electrical work flow of the regulation system and the oil side pressure transmitter, the gas side pressure transmitter, the pressure reducing valve and the back pressure valve is as follows: the oil side pressure transmitter and the gas side pressure transmitter can acquire oil side pressure data and gas side pressure data in real time in the working process of the diaphragm compressor, convert the oil side pressure data and the gas side pressure data into respective standard electric signals and transmit the standard electric signals to the regulation and control system, after the regulation and control system receives the standard electric signals, pressure regulation is carried out on one side generating the standard electric signals according to a preset threshold value, namely the gas side pressure data is large, the pressure reducing valve is started to regulate and control inlet pressure, and if the oil side pressure data is large, the back pressure valve is started to regulate outlet pressure.
The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be made by those skilled in the art without inventive work within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.
Claims (8)
1. The diaphragm for the diaphragm compressor comprises the diaphragm compressor and is characterized by further comprising:
A base material film (1);
The first coating (2), the first coating (2) covers one side of the substrate membrane (1), and the side is set as an oil side;
The second coating (3) covers one side, opposite to the first coating (2), of the base material membrane (1), and the side is set to be an air side;
An intermediate layer (4), the intermediate layer (4) being arranged between the first coating (2) and the substrate membrane (1), and between the second coating (3) and the substrate membrane (1);
the first anti-corrosion coating (5) covers one side, far away from the base material membrane (1), of the first coating (2);
and the second anti-corrosion coating (6) covers one side, far away from the substrate membrane (1), of the second coating (3).
2. a diaphragm for a diaphragm compressor according to claim 1, wherein: the substrate membrane (1) is a 316L stainless steel substrate membrane, or a hastelloy substrate membrane, or a tantalum metal substrate membrane, or a nickel metal substrate membrane, or a titanium metal substrate membrane, or a zirconium metal substrate membrane, or a platinum metal substrate membrane.
3. A diaphragm for a diaphragm compressor according to claim 1, wherein: the first coating (2) is a DLC coating including, but not limited to, tetrahedral diamond-like carbon and amorphous hydrogenated diamond-like carbon.
4. a diaphragm for a diaphragm compressor according to claim 3, wherein: the second coating (3) is identical to the first coating (2).
5. a diaphragm for a diaphragm compressor according to claim 1, wherein: the intermediate layer (4) is a metal layer or an inorganic non-metal layer, and the metal layer is titanium, tantalum or chromium; the inorganic non-metal layer is an alumina ceramic coating.
6. a diaphragm for a diaphragm compressor according to claim 1, wherein: the first anti-corrosion coating (5) comprises a phenolic resin coating and a fluorocarbon coating which are sequentially arranged from inside to outside.
7. a diaphragm for a diaphragm compressor according to claim 1, wherein: the second anticorrosive coating (6) comprises an epoxy resin coating and a double-component polyurethane coating which are sequentially arranged from inside to outside.
8. The method for prolonging the service life of the diaphragm is characterized in that: comprising the diaphragm compressor according to claims 1-7 and a diaphragm, further comprising a regulating system and the steps of:
S1: arranging a pressure reducing valve at one end of an air inlet pipeline of the diaphragm compressor, which is far away from the diaphragm compressor, wherein the pressure reducing valve is electrically connected with a regulation and control system;
s2: arranging a back pressure valve at one end of an exhaust pipeline of the diaphragm compressor, which is far away from the diaphragm compressor, wherein the back pressure valve is electrically connected with a regulation and control system;
S3: pressure transmitters are arranged on both the oil side and the gas side of the diaphragm, and pressure data acquired by the pressure transmitters are converted into standard electric signals and transmitted to a regulation and control system;
S4: and the regulating and controlling system carries out feedback regulation on the pressure reducing valve and the back pressure valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910898875.0A CN110566444A (en) | 2019-09-23 | 2019-09-23 | diaphragm for diaphragm compressor and method for prolonging service life of diaphragm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910898875.0A CN110566444A (en) | 2019-09-23 | 2019-09-23 | diaphragm for diaphragm compressor and method for prolonging service life of diaphragm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110566444A true CN110566444A (en) | 2019-12-13 |
Family
ID=68781881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910898875.0A Pending CN110566444A (en) | 2019-09-23 | 2019-09-23 | diaphragm for diaphragm compressor and method for prolonging service life of diaphragm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110566444A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112049776A (en) * | 2020-08-25 | 2020-12-08 | 四川金星清洁能源装备股份有限公司 | Hydrogen compressor air valve structure for hydrogenation station and manufacturing method thereof |
| CN114458584A (en) * | 2022-02-17 | 2022-05-10 | 西华大学 | Diaphragm with surface compressive stress and preparation method and application thereof |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10024127C1 (en) * | 2000-05-18 | 2001-12-20 | Vacuubrand Gmbh & Co Kg | Membrane or piston vacuum pump, for transferring aggressive media, has oxidized metal surfaces infiltrated with fluoropolymer, in contact with media |
| US20030031565A1 (en) * | 2001-08-07 | 2003-02-13 | Horst Kleibrink | Method for the control and regulation of the oil pressure-gas pressure relationship of diaphragm compressors |
| CN1634702A (en) * | 2003-12-26 | 2005-07-06 | 上海华向橡胶制品有限公司 | Method for manufacturing rubber diaphragm for diaphragm pump |
| JP2006207533A (en) * | 2005-01-31 | 2006-08-10 | Tacmina Corp | Diaphragm and reciprocating pump |
| CN102200189A (en) * | 2010-03-24 | 2011-09-28 | 精工电子有限公司 | Diaphragm, diaphragm valve, and method of manufacturing diaphragm |
| WO2013161369A1 (en) * | 2012-04-24 | 2013-10-31 | 日東電工株式会社 | Diaphragm and recriprocating pump |
| CN205225649U (en) * | 2015-11-18 | 2016-05-11 | 上海隆胜堡密封科技有限公司 | Compound environmental protection diaphragm of diaphragm pump |
| CN205559231U (en) * | 2016-04-21 | 2016-09-07 | 张家港市宏宇橡塑弹簧有限公司 | Novel compound diaphragm |
| CN107893747A (en) * | 2017-11-11 | 2018-04-10 | 成都市龙泉星源机械厂 | A kind of multistage membrane compresses system |
| CN210715036U (en) * | 2019-09-23 | 2020-06-09 | 四川金星清洁能源装备股份有限公司 | Diaphragm compressor is with long service life's diaphragm |
-
2019
- 2019-09-23 CN CN201910898875.0A patent/CN110566444A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10024127C1 (en) * | 2000-05-18 | 2001-12-20 | Vacuubrand Gmbh & Co Kg | Membrane or piston vacuum pump, for transferring aggressive media, has oxidized metal surfaces infiltrated with fluoropolymer, in contact with media |
| US20030031565A1 (en) * | 2001-08-07 | 2003-02-13 | Horst Kleibrink | Method for the control and regulation of the oil pressure-gas pressure relationship of diaphragm compressors |
| CN1634702A (en) * | 2003-12-26 | 2005-07-06 | 上海华向橡胶制品有限公司 | Method for manufacturing rubber diaphragm for diaphragm pump |
| JP2006207533A (en) * | 2005-01-31 | 2006-08-10 | Tacmina Corp | Diaphragm and reciprocating pump |
| CN102200189A (en) * | 2010-03-24 | 2011-09-28 | 精工电子有限公司 | Diaphragm, diaphragm valve, and method of manufacturing diaphragm |
| WO2013161369A1 (en) * | 2012-04-24 | 2013-10-31 | 日東電工株式会社 | Diaphragm and recriprocating pump |
| CN205225649U (en) * | 2015-11-18 | 2016-05-11 | 上海隆胜堡密封科技有限公司 | Compound environmental protection diaphragm of diaphragm pump |
| CN205559231U (en) * | 2016-04-21 | 2016-09-07 | 张家港市宏宇橡塑弹簧有限公司 | Novel compound diaphragm |
| CN107893747A (en) * | 2017-11-11 | 2018-04-10 | 成都市龙泉星源机械厂 | A kind of multistage membrane compresses system |
| CN210715036U (en) * | 2019-09-23 | 2020-06-09 | 四川金星清洁能源装备股份有限公司 | Diaphragm compressor is with long service life's diaphragm |
Non-Patent Citations (1)
| Title |
|---|
| （德）康拉德·莱夫（KONRD REIF）主编；魏春源译: "BOSCH 汽车工程手册", vol. 4, 31 January 2016, 北京理工大学出版社, pages: 200 - 202 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112049776A (en) * | 2020-08-25 | 2020-12-08 | 四川金星清洁能源装备股份有限公司 | Hydrogen compressor air valve structure for hydrogenation station and manufacturing method thereof |
| CN114458584A (en) * | 2022-02-17 | 2022-05-10 | 西华大学 | Diaphragm with surface compressive stress and preparation method and application thereof |
| CN114458584B (en) * | 2022-02-17 | 2024-01-19 | 西华大学 | Diaphragm with surface compressive stress and preparation method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110566444A (en) | diaphragm for diaphragm compressor and method for prolonging service life of diaphragm | |
| CN102484268B (en) | Improved seal performance for hydrogen storage and supply systems | |
| CN210715036U (en) | Diaphragm compressor is with long service life's diaphragm | |
| CN107849703A (en) | Band coating sliding members | |
| CN101671536B (en) | Carbon fiber friction material and application thereof for manufacturing friction layer of vehicle steel synchronizer tooth ring | |
| WO2017150571A1 (en) | Sliding member and piston ring | |
| Wang et al. | The analysis of the friction and wear mechanisms of plasma-sprayed ceramic coatings at 450 C | |
| SG191408A1 (en) | Piston assembly for alernative compressor | |
| Solzak et al. | Tribology of WC/C coatings for use in oil-less piston-type compressors | |
| CN114011684A (en) | Preparation method of wear-resistant coating of screw compressor and screw compressor | |
| CN201037458Y (en) | Deep-etching-resisting screw pump | |
| US6713535B2 (en) | Low-friction chromate-free coating of epoxy resins and sulfonyldianiline | |
| JP3694543B2 (en) | Vane pump | |
| Hernández-Sierra et al. | Tribological performance of TiN and TiCN coatings on a working tool steel | |
| CN100429072C (en) | Method for manufacturing rubber diaphragm for diaphragm pump | |
| CN209604238U (en) | Vacuum pump part and dry vacuum pump | |
| JPH01210662A (en) | Pneumatic pressure-oil pressure cylinder | |
| EP0752538A2 (en) | Fluid lubricated sliding contact bearing | |
| Jiang et al. | The influence of ball size on tribological behaviour of MoS2 coating tested on a ball-on-disk wear rig | |
| JP2634617B2 (en) | Show for swash plate type compressor | |
| CN103788618A (en) | Polyaryletherketone composite material, preparation method thereof and sealing ring using material | |
| CN114444265A (en) | Mechanical seal life prediction method based on Kalman filtering | |
| US6416058B1 (en) | Packing seal with dynamic self-adapting lip | |
| US20100320278A1 (en) | Expansion valve | |
| JPS6237517A (en) | Sliding member |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |