CN111271263A - Modular diaphragm compressor with large-displacement and multi-stage compression structure - Google Patents
Modular diaphragm compressor with large-displacement and multi-stage compression structure Download PDFInfo
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- 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
- F04B45/047—Pumps having electric drive
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- 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
- F04B25/00—Multi-stage pumps
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- 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
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- 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
- F04B39/0027—Pulsation and noise damping means
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Abstract
The invention discloses a modular large-displacement diaphragm compressor with a multi-stage compression structure, and relates to the field of diaphragm compressors. The compression system comprises a compression system and a sledge body system for supporting the compression system, wherein the compression system comprises a first compression assembly and a second compression assembly, the first compression assembly and the second compression assembly are respectively arranged at two sides of a motor, and the motor is matched with a coupler and is respectively connected with a first crankshaft and a second crankshaft; the first compression assembly and the second compression assembly respectively comprise at least one diaphragm compressor; the diaphragm compressor is driven by an independent crank connecting rod mechanism, and the crank connecting rod mechanism is fixed on the base and driven by a main engine wheel to rotate; at least one group of compression modules are arranged in the cylinder, and each compression module comprises an oil distribution disc and an air distribution disc which are arranged in pairs and a diaphragm arranged between the oil distribution disc and the air distribution disc. After the multistage diaphragm compressor is arranged, the compression ratio and the air displacement of the multistage diaphragm compressor are both greatly improved.
Description
Technical Field
The invention relates to the field of diaphragm compressors, in particular to a modular large-displacement diaphragm compressor with a multistage compression structure.
Background
The diaphragm compressor is a volumetric compressor with a special structure, has very good sealing performance, and the compressed medium is not contacted with any lubricant, so the diaphragm compressor can compress gas with extremely high purity, generally reaching 99.999 percent of purity, and is particularly suitable for compression, transportation and bottling of precious rare gas, and is also suitable for gas with extremely strong corrosivity, toxicity, flammability and explosiveness and radioactivity; meanwhile, the cylinder of the diaphragm compressor has good heat dissipation performance, is close to isothermal compression, can adopt a higher compression ratio, has a wider pressure range and can reach 200MPa from very low pressure.
Therefore, the diaphragm compressor is mainly applied to special gas markets, such as the fields of industrial gas, food industry, petrochemical industry, nuclear power, aerospace, military equipment, scientific research and test and the like. It is suitable for conveying gas with high compression pressure, high purity, high corrosivity, no leakage, such as hydrogen, helium, oxygen, nitrogen, hydrogen chloride, etc.
With the continuous development of the industry, users have higher requirements on the discharge pressure of the compressor. The traditional diaphragm compressor is generally a first-stage compressor or a second-stage compressor, and the gas compression ratio and the air displacement are insufficient; in addition, because the traditional diaphragm compressor has differential pressure at two ends of oil gas, the diaphragm can vibrate repeatedly, and the traditional diaphragm compressor is very easy to damage.
Disclosure of Invention
The invention aims to: the diaphragm compressor with the modular large displacement and the multi-stage compression structure is provided, and the problems of insufficient gas compression ratio and insufficient displacement of the traditional diaphragm compressor are solved; in addition, the problem that the diaphragm is easy to damage due to repeated vibration of the diaphragm caused by pressure difference between two ends of oil gas in the traditional diaphragm compressor is solved.
The technical scheme adopted by the invention is as follows:
a modular large-displacement diaphragm compressor with a multi-stage compression structure comprises a compression system and a sledge body system for supporting the compression system, wherein the sledge body system comprises a bottom sledge and a base fixed on the bottom sledge; the compression system comprises a first compression assembly and a second compression assembly, the first compression assembly and the second compression assembly are respectively arranged on two sides of the motor, and the motor is matched with the coupling and is respectively connected with the first crankshaft and the second crankshaft; the first compression assembly and the second compression assembly respectively comprise at least one diaphragm compressor; the diaphragm compressor is driven by an independent crank connecting rod mechanism, and the crank connecting rod mechanism is fixed on the base and driven by a main engine wheel to rotate;
the diaphragm compressor comprises a crankcase, one end of the crankcase, which is far away from the base, is provided with a cylinder communicated with the crankcase, a piston is arranged in the cylinder, and the piston is connected with a crank-link mechanism through a piston rod and driven by the crank-link mechanism to reciprocate; the cylinder is also provided with a cylinder cover which is hermetically connected with the cylinder body, at least one group of compression modules is arranged in the cylinder, each compression module comprises an oil distribution disc and an air distribution disc which are arranged in pair, an oil inlet hole and an oil overflow hole which are communicated with the oil cavity are formed in the oil distribution disc, an air inlet hole and an air outlet hole are formed in the air distribution disc, and diaphragms are arranged between the oil distribution disc and the air distribution disc;
the first oil tank is connected to the oil inlet hole through an oil inlet pipe of the one-way valve, and the oil overflow hole is connected to the second oil tank through an oil outlet pipe of the one-way valve; the air pump is connected to the air inlet hole through a check valve air inlet pipe, and the air outlet hole is communicated with the outside through a check valve air outlet pipe; in each group of compression modules, an oil inlet pipe and an air inlet pipe of the check valve are arranged and are independent, oil outlet pipes of the check valves are connected in parallel and then connected to a second oil tank, and air outlet pipes of the check valves are connected in parallel and then communicated with the outside.
Aiming at the defects of insufficient gas compression ratio and insufficient air displacement of the traditional compressor, the invention makes innovative improvement. Firstly, a first compression assembly and a second compression assembly are arranged, the first compression assembly and the second compression assembly are respectively arranged on two sides of a motor, and the motor is matched with a coupler and is respectively connected with a first crankshaft and a second crankshaft; the driving method here may be other methods as long as the driving purpose can be achieved, and the driving method is not limited. Secondly, a plurality of stages of diaphragm compressors are arranged, each stage of diaphragm compressor is driven by an independent crank link mechanism, and the compression ratio of the multi-stage diaphragm compressor is greatly improved; and the number of the diaphragm compressors can be set according to the actual requirement of a user. Meanwhile, at least one group of compression modules is arranged in each stage of diaphragm compressor, and each compression module comprises an oil distribution disc and an air distribution disc which are arranged in pairs and a diaphragm between the oil distribution disc and the air distribution disc; when the number of the compression modules is more than or equal to 2, the compression modules are stacked, specifically, when the compression modules are provided with oil distribution discs and air distribution discs in pairs, a diaphragm is arranged between each pair of the oil distribution discs and the air distribution discs, one side of the diaphragm close to the oil distribution discs is a high-pressure oil cavity, and one side of the diaphragm close to the air distribution discs is a high-pressure air cavity; the air distribution disc of each group of compression modules is provided with an air inlet hole and an air outlet hole, the air inlet hole is connected with the first air pump through a one-way valve air inlet pipe, the air outlet hole is communicated with the outside through a one-way valve air outlet pipe, each group of compression modules is provided with a respective independent one-way valve air inlet pipe, and the one-way valve air outlet pipes of each group of compression modules are communicated with the outside after being mutually connected in parallel; all be provided with inlet port and oil spilling hole on each group compression module's the food tray, the inlet port passes through the check valve inlet tube and connects first oil tank, and the oil spilling hole passes through the check valve and goes out oil pipe connection second oil tank, and each group compression module sets up independent check valve inlet tube separately, and each group compression module's check valve goes out oil pipe and communicates with the outside after parallelly connected each other. Therefore, the pressure on the two sides of the oil distribution disc and the pressure on the two sides of the air distribution disc can be mutually offset, and the breakage rate of the diaphragm can be greatly reduced.
Furthermore, the first compression assembly and the second compression assembly comprise a first-stage diaphragm compressor and a second-stage diaphragm compressor, and the first-stage diaphragm compressor and the second-stage diaphragm compressor are arranged symmetrically left and right relative to the sledge body system.
The number of the diaphragm compressors can be set according to the actual requirement of a user. Here a two-stage diaphragm compressor is used.
Further, including one-level diaphragm compressor, second grade diaphragm compressor, tertiary diaphragm compressor on first compression subassembly and the second compression subassembly, be the contained angle setting between one-level diaphragm compressor, second grade diaphragm compressor, the tertiary diaphragm compressor, wherein, one-level diaphragm compressor, second grade diaphragm compressor for sledge body system bilateral symmetry sets up, and is separated by 90 degrees contained angles between one-level diaphragm compressor and the tertiary diaphragm compressor, is separated by 90 degrees contained angles between second grade diaphragm compressor and the tertiary diaphragm compressor.
In order to improve the balance of the equipment, the first-stage diaphragm compressor and the second-stage diaphragm compressor are arranged symmetrically left and right relative to the sledge body system, and the third-stage diaphragm compressor is vertically arranged at the top of the sledge body system; the compression ratio of each diaphragm compressor can be different, partially same or completely same, and can be set according to the requirements of users.
Furthermore, be the contained angle setting between one-level diaphragm compressor, second grade diaphragm compressor, the tertiary diaphragm compressor, wherein, one-level diaphragm compressor, second grade diaphragm compressor for sledge body system bilateral symmetry sets up, and is separated by 90 degrees contained angles between one-level diaphragm compressor and the tertiary diaphragm compressor, is separated by 90 degrees contained angles between second grade diaphragm compressor and the tertiary diaphragm compressor.
And the compression ratios of the first-stage diaphragm compressor, the second-stage diaphragm compressor and the third-stage diaphragm compressor are sequentially increased.
Furthermore, a high-pressure oil cavity is formed in one side, close to the oil distribution disc, of the membrane, and a high-pressure air cavity is formed in one side, close to the air distribution disc, of the membrane; the oil inlet hole and the oil spilling hole are soft oil hole plugs which are arranged on the end face of the high-pressure oil cavity in a penetrating mode, and the air inlet hole and the air exhaust hole are soft air hole plugs which are arranged on the end face of the high-pressure air cavity in a penetrating mode.
The soft oil hole plug and the soft air hole plug are connected with the end surface of the high-pressure oil cavity and the end surface of the high-pressure air cavity in an interference fit mode, and the soft oil hole plug and the soft air hole plug are made of rubber materials.
Furthermore, the piston is arranged in a piston cylinder barrel positioned in the cylinder, a soft sealing layer is arranged on the inner wall of the piston cylinder barrel, and the side face of the piston is abutted against the surface of the soft sealing layer. The soft sealing layer is made of a high-elasticity polymer material with reversible deformation, is high in elasticity at room temperature, can generate large deformation under the action of small external force, and can recover the original shape after the external force is removed.
The side of the piston is provided with a plurality of arc-shaped grooves along the circumferential array, small balls are movably embedded in the arc-shaped grooves, and part of balls of the small balls extend to the outer parts of the arc-shaped grooves. The pellets can be made of steel materials which are resistant to corrosion by weak corrosive media such as air, steam and water and chemical corrosive media such as acid, alkali and salt, or other materials meeting the use requirements.
If the radius of the small ball is r, the small ball extends to the ball outside the arc-shaped groove, the distance range of the outermost end of the small ball from the side face of the piston is h, and r/2 is more than h and less than r.
Further, an airtight assembly is arranged between the cylinder and the cylinder cover and comprises a cylinder cover gasket, an air valve component and an air valve gasket which are sequentially arranged.
The first oil tank and the second oil tank are the same oil tank, and a filtering system is arranged in the oil tank.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. the invention relates to a modular large-displacement diaphragm compressor with a multi-stage compression structure, which is provided with the multi-stage diaphragm compressor, wherein each stage of diaphragm compressor is driven by an independent crank-link mechanism, and the compression ratio of the multi-stage diaphragm compressor is greatly improved; and the number of the diaphragm compressors can be set according to the actual requirement of a user. Meanwhile, in order to improve the balance of the equipment, the diaphragm compressors are symmetrically arranged relative to the sledge body system, and the compression ratios of the diaphragm compressors at all levels can be different, partially same or completely same and can be arranged according to the requirements of users.
2. The invention relates to a modular large-displacement diaphragm compressor with a multi-stage compression structure, wherein at least one group of compression modules are arranged in each stage of diaphragm compressor, and each compression module comprises an oil distribution disc, an air distribution disc and a diaphragm between the oil distribution disc and the air distribution disc which are arranged in pairs; when the number of the compression modules is more than or equal to 2, the compression modules are overlapped, so that the pressures on two sides of the oil distribution disc and the air distribution disc are mutually offset, and the breakage rate of the diaphragm can be greatly reduced.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a schematic diagram of the two stage diaphragm compressor configuration of the present invention;
FIG. 2 is a schematic top view of the present invention;
FIG. 3 is a schematic view of the three stage diaphragm compressor configuration of the present invention;
FIG. 4 illustrates the stacking of two compression modules according to the present invention;
FIG. 5 is a schematic structural diagram of a cylinder part of the piston and the piston cylinder of the invention;
in the figure, 1-compression system, 10-first-stage diaphragm compressor, 11-second-stage diaphragm compressor, 12-third-stage diaphragm compressor, 13-first compression assembly, 14-second compression assembly, 15-motor, 16-first crankshaft, 17-second crankshaft, 18-diaphragm compressor, 2-sledge system, 21-bottom sledge, 22-base, 3-crank link mechanism, 4-crankcase, 5-cylinder, 51-piston, 511-arc groove, 512-small ball, 52-piston rod, 53-cylinder cover, 54-piston cylinder barrel, 55-soft sealing layer, 6-compression module, 61-oil distribution disc, 62-air distribution disc, 63-first oil tank, 631-one-way valve oil inlet pipe, 2-sledge body system, 632-one-way valve oil outlet pipe, 64-second oil tank, 65-first air pump, 651-one-way valve air inlet pipe and 652-one-way valve air outlet pipe.
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 and 2.
Example 1
As shown in fig. 1 and 2, a modular large-displacement diaphragm compressor with a multi-stage compression structure comprises a compression system 1, and a sled system 2 supporting the compression system 1, wherein the sled system 2 comprises a bottom sled 21 and a base 22 fixed on the bottom sled 21; the compression system 1 comprises a first compression assembly 13 and a second compression assembly 14, the first compression assembly 13 and the second compression assembly 14 are respectively arranged on two sides of a motor 15, and the motor 15 is matched with a coupler and is respectively connected with a first crankshaft 16 and a second crankshaft 17; the first compression assembly 13 and the second compression assembly 14 both comprise at least one diaphragm compressor 18; the diaphragm compressor 18 is driven by an independent crank-link mechanism 3, and the crank-link mechanism 3 is fixed on the base 22 and driven by a main engine wheel to rotate;
aiming at the defects of insufficient gas compression ratio and insufficient air displacement of the traditional compressor, the invention makes innovative improvement. Firstly, a first compression assembly 13 and a second compression assembly 14 are arranged, the first compression assembly 13 and the second compression assembly 14 are respectively arranged on two sides of a motor 15, and the motor 15 is matched with a coupler and is respectively connected with a first crankshaft 16 and a second crankshaft 17; secondly, a plurality of stages of diaphragm compressors are arranged, each stage of diaphragm compressor is driven by an independent crank link mechanism 3, and the compression ratio of the multi-stage diaphragm compressor is greatly improved; and the number of the diaphragm compressors can be set according to the actual requirement of a user.
Example 2
A modular large-displacement diaphragm compressor with a multi-stage compression structure is disclosed, as shown in FIG. 3, and comprises a compression system 1, and a sled body system 2 supporting the compression system 1, wherein the sled body system 2 comprises a bottom sled 21 and a base 22 fixed on the bottom sled 21; the compression system 1 comprises a first-stage diaphragm compressor 10, a second-stage diaphragm compressor 11 and a third-stage diaphragm compressor 12, each stage of diaphragm compressor is driven by an independent crank-link mechanism 3, and the crank-link mechanisms 3 are fixed on a base 22 and driven to rotate by a main engine wheel.
Be the contained angle setting between one-level diaphragm compressor 10, second grade diaphragm compressor 11, the tertiary diaphragm compressor 12, wherein, one-level diaphragm compressor 10, second grade diaphragm compressor 11 for 2 bilateral symmetry settings of sledge body system, and 90 degrees contained angles are separated by between one-level diaphragm compressor 10 and the tertiary diaphragm compressor 12, 90 degrees contained angles are separated by between second grade diaphragm compressor 11 and the tertiary diaphragm compressor 12.
Wherein, the compression ratio of the first stage diaphragm compressor 10, the second stage diaphragm compressor 11 and the third stage diaphragm compressor 12 is increased in sequence.
In the embodiment, three stages of diaphragm compressors are arranged, each stage of diaphragm compressor is driven by an independent crank link mechanism 3, and the compression ratio of the three stages of diaphragm compressors is greatly improved; meanwhile, in order to improve the balance of the equipment, the primary diaphragm compressor 10 and the secondary diaphragm compressor 11 are arranged symmetrically left and right relative to the skid body system 2, and the tertiary diaphragm compressor 12 is vertically arranged at the top of the skid body system 2; the compression ratio of each diaphragm compressor can be different, partially same or completely same, and can be set according to the requirements of users.
Example 3
A modular large-displacement diaphragm compressor with a multi-stage compression structure is disclosed, as shown in FIGS. 1 and 3, and comprises a compression system 1, and a sled system 2 supporting the compression system 1, wherein the sled system 2 comprises a bottom sled 21 and a base 22 fixed on the bottom sled 21; the compression system 1 comprises at least one diaphragm compressor, the diaphragm compressor comprises a crankcase 4, one end of the crankcase 4, which is far away from the base 22, is provided with a cylinder 5 communicated with the crankcase 4, a piston 51 is arranged in the cylinder 5, and the piston 51 is connected with a crank connecting rod mechanism 3 through a piston rod 52 and driven by the crank connecting rod mechanism 3 to reciprocate; the cylinder 5 is further provided with a cylinder cover 53 connected with the cylinder body in a sealing mode, at least one group of compression modules 6 are arranged in the cylinder 5, each compression module 6 comprises an oil distribution disc 61 and an air distribution disc 62 which are arranged in pairs, an oil inlet hole and an oil overflow hole leading to an oil cavity are formed in the oil distribution disc 61, an air inlet hole and an air exhaust hole are formed in the air distribution disc 62, and diaphragms are arranged between the oil distribution disc 61 and the air distribution disc 62.
As shown in fig. 3, further includes a first oil tank 63, the first oil tank 63 is connected to an oil inlet hole through a check valve oil inlet pipe 631, and an oil spill hole is connected to a second oil tank 64 through a check valve oil outlet pipe 632; the air pump device further comprises a first air pump 65, wherein the first air pump 65 is connected to an air inlet hole through a one-way valve air inlet pipe 651, and an air outlet hole is communicated with the outside through a one-way valve air outlet pipe 652; in each group of compression modules 6, a check valve inlet pipe 631 and a check valve inlet pipe 651 which are independent of each other are provided, and check valve outlet pipes 632 are connected in parallel to each other and then connected to the second oil tank 64, and check valve outlet pipes 652 are connected in parallel to each other and then communicated with the outside.
At least one group of compression modules 6 is arranged in each stage of diaphragm compressor, wherein each compression module 6 comprises an oil distribution disc 61 and an air distribution disc 62 which are arranged in pairs, and a diaphragm between the oil distribution discs and the air distribution discs; when the number of the compression modules 6 is more than or equal to 2, the compression modules 6 are overlapped, so that the pressures on the two sides of the oil distribution disc 61 and the air distribution disc 62 are mutually offset, and the breakage rate of the membranes can be greatly reduced. Moreover, each compression module 6 is independently supplied with oil and gas, and is really connected in parallel to uniformly discharge oil and gas, so that each stage of compression module 6 can work independently and can be matched with each other.
Example 4
The embodiment is intended to specifically explain the manner of stacking the compression modules.
As shown in fig. 4, when the number of the compression modules is 2, specifically, the compression modules are provided with oil distribution discs and air distribution discs in pairs, a membrane is arranged between each pair of the oil distribution discs and the air distribution discs, one side of the membrane close to the oil distribution discs is a high-pressure oil cavity, and one side of the membrane close to the air distribution discs is a high-pressure air cavity; the air distribution disc of each group of compression modules is provided with an air inlet hole and an air outlet hole, the air inlet hole is connected with the first air pump through a one-way valve air inlet pipe, the air outlet hole is communicated with the outside through a one-way valve air outlet pipe, each group of compression modules is provided with a respective independent one-way valve air inlet pipe, and the one-way valve air outlet pipes of each group of compression modules are communicated with the outside after being mutually connected in parallel; all be provided with inlet port and oil spilling hole on each group compression module's the food tray, the inlet port passes through the check valve inlet tube and connects first oil tank, and the oil spilling hole passes through the check valve and goes out oil pipe connection second oil tank, and each group compression module sets up independent check valve inlet tube separately, and each group compression module's check valve goes out oil pipe and communicates with the outside after parallelly connected each other. Therefore, the pressure on the two sides of the oil distribution disc and the pressure on the two sides of the air distribution disc can be mutually offset, and the breakage rate of the diaphragm can be greatly reduced.
Example 5
A modular large-displacement diaphragm compressor with a multi-stage compression structure is disclosed, as shown in FIG. 3, and comprises a compression system 1, and a sled body system 2 supporting the compression system 1, wherein the sled body system 2 comprises a bottom sled 21 and a base 22 fixed on the bottom sled 21; the compression system 1 comprises a first-stage diaphragm compressor 10, a second-stage diaphragm compressor 11 and a third-stage diaphragm compressor 12, each stage of diaphragm compressor is driven by an independent crank-link mechanism 3, and the crank-link mechanisms 3 are fixed on a base 22 and driven to rotate by a main engine wheel.
Be the contained angle setting between one-level diaphragm compressor 10, second grade diaphragm compressor 11, the tertiary diaphragm compressor 12, wherein, one-level diaphragm compressor 10, second grade diaphragm compressor 11 for 2 bilateral symmetry settings of sledge body system, and 90 degrees contained angles are separated by between one-level diaphragm compressor 10 and the tertiary diaphragm compressor 12, 90 degrees contained angles are separated by between second grade diaphragm compressor 11 and the tertiary diaphragm compressor 12.
Wherein, the compression ratio of the first stage diaphragm compressor 10, the second stage diaphragm compressor 11 and the third stage diaphragm compressor 12 is increased in sequence.
The primary diaphragm compressor 10, the secondary diaphragm compressor 11 and the tertiary diaphragm compressor 12 all comprise a crankcase 4, one end of the crankcase 4 far away from the base 22 is provided with a cylinder 5 communicated with the crankcase 4, a piston 51 is arranged in the cylinder 5, and the piston 51 is connected with the crank-link mechanism 3 through a piston rod 52 and driven by the crank-link mechanism 3 to reciprocate; the cylinder 5 is further provided with a cylinder cover 53 connected with the cylinder body in a sealing mode, at least one group of compression modules 6 are arranged in the cylinder 5, each compression module 6 comprises an oil distribution disc 61 and an air distribution disc 62 which are arranged in pairs, an oil inlet hole and an oil overflow hole leading to an oil cavity are formed in the oil distribution disc 61, an air inlet hole and an air exhaust hole are formed in the air distribution disc 62, and diaphragms are arranged between the oil distribution disc 61 and the air distribution disc 62.
The fuel tank further comprises a first fuel tank 63, wherein the first fuel tank 63 is connected to a fuel inlet hole through a check valve fuel inlet pipe 631, and a fuel overflow hole is connected to a second fuel tank 64 through a check valve fuel outlet pipe 632; the air pump device further comprises a first air pump 65, wherein the first air pump 65 is connected to an air inlet hole through a one-way valve air inlet pipe 651, and an air outlet hole is communicated with the outside through a one-way valve air outlet pipe 652; in each group of compression modules 6, a check valve inlet pipe 631 and a check valve inlet pipe 651 which are independent of each other are provided, and check valve outlet pipes 632 are connected in parallel to each other and then connected to the second oil tank 64, and check valve outlet pipes 652 are connected in parallel to each other and then communicated with the outside.
Example 6
This example is a supplementary explanation of example 5.
Further, a high-pressure oil cavity is formed in one side, close to the oil distribution disc 61, of the membrane, and a high-pressure air cavity is formed in one side, close to the air distribution disc 62, of the membrane; the oil inlet hole and the oil spilling hole are soft oil hole plugs which are arranged on the end face of the high-pressure oil cavity in a penetrating mode, and the air inlet hole and the air exhaust hole are soft air hole plugs which are arranged on the end face of the high-pressure air cavity in a penetrating mode.
The soft oil hole plug and the soft air hole plug are connected with the end surface of the high-pressure oil cavity and the end surface of the high-pressure air cavity in an interference fit mode, and the soft oil hole plug and the soft air hole plug are made of rubber materials.
Due to the characteristics of the soft oil hole plug and the soft air hole plug, when the diaphragm is impacted greatly and vibrates repeatedly, the soft oil hole plug and the soft air hole plug can play a role in buffering, and therefore the breakage rate of the diaphragm at the oil inlet hole, the oil overflow hole, the air inlet hole and the air outlet hole is reduced.
Example 7
This example is a supplementary explanation of example 3.
A gas flow regulating structure, i.e., a plunger pump, may be provided to supply oil to the hydraulic cylinder through the first oil tank 64, specifically, the plunger pump. The method mainly comprises the following steps: when the main shaft rotates, oil in the crankcase 4 enters the gear pump through the check valve oil inlet pipe 631 to be pressurized, the cam drives the plunger pump to do reciprocating motion, the oil is further pressurized through the plunger pump and enters the hydraulic cylinder through the oil supplementing pipeline to supplement oil, and therefore the plunger pump supplements oil to the oil cavity once when the main shaft rotates for one circle; the oil will flow out of the oil spill valve after reaching the set pressure in the cylinder, and then flow back to the crankcase 4 through the one-way valve oil outlet pipe 632.
In the process that the piston moves towards the bottom dead center, the oil supplementing time of the plunger pump is changed, the pressure in the oil cylinder of the hydraulic cylinder is controlled to rise to the corner position of the pressure in the gas compression cavity, so that the end position of the downward movement of the diaphragm and the volume of the gas compression cavity are controlled, and the gas flow regulation of the diaphragm compressor is realized.
The problem of oil in the pneumatic cylinder leaks through the piston ring, leads to the compressor can not suck gas again is solved. The hydraulic cylinder can have enough oil quantity by supplementing oil timely and continuously. So that the stroke of the piston is not affected and the compressor can work normally and continuously. The invention realizes the stepless regulation of the gas flow of the diaphragm compressor by adjusting the oil supplementing time of the plunger pump while the compressor operates, can solve the problem of insufficient air suction during the oil supplementing of the existing diaphragm compressor, and is more economical and reduces the energy consumption. The invention has simple structure and convenient installation, the air quantity discharged by the unit does not flow back to the inlet, thereby avoiding the waste of energy, avoiding the increase of frequency converter equipment and reducing the expensive cost of the frequency converter equipment.
Example 8
This example is a supplementary explanation of example 5.
Further, as shown in fig. 4, the piston 51 is disposed in a piston cylinder 54 located in the cylinder 5, a soft sealing layer 55 is disposed on an inner wall of the piston cylinder 54, and a side surface of the piston 51 abuts against a surface of the soft sealing layer 55. The soft sealing layer 55 is an important sealing wear-resistant structure, which avoids direct contact between the piston 51 and the inner wall of the piston cylinder 54, and enhances the sealing performance of the space at two sides of the piston 51 in the inner cavity of the piston cylinder 54 while preventing the piston 51 from wearing the piston cylinder 54 due to long-term reciprocating motion.
The side surface of the piston 51 is provided with a plurality of arc-shaped grooves 511 along the circumferential direction, small balls 512 are movably embedded in the arc-shaped grooves 511, and part of the balls of the small balls 512 extend to the outside of the arc-shaped grooves 511.
If the radius of the small ball 512 is r, the small ball 512 extends to the ball outside the arc-shaped groove 511, and the distance range from the outermost end of the small ball 512 to the side surface of the piston 51 is h, then r/2 < h < r.
Even if the soft seal layer 55 is provided, direct contact between the piston 51 and the inner wall of the piston cylinder 54 is avoided, and the piston cylinder 54 is prevented from being worn by long-term reciprocation of the piston, and then the soft seal layer 55 is worn by movement of the piston 51, so that the soft seal layer 55 is cut. Therefore, in the technical scheme, the small ball 512 which is directly contacted with the soft sealing layer 55 is arranged on the piston 51, the small ball 512 is clamped in the arc-shaped groove 511, the part, extending to the outside of the arc-shaped groove 511, of the small ball 512 is ensured to meet the range, the small ball 512 does not fall out of the arc-shaped groove 511, and meanwhile, the small ball 512 can freely rotate in the arc-shaped groove 511. With the arrangement, when the piston 51 moves, the small ball 512 extrudes the soft sealing layer 55 to deform the soft sealing layer 55, and a secondary seal is formed between the small ball 512 and the soft sealing layer 55 while the piston 51 and the soft sealing layer 55 form a primary seal, so that the sealing performance inside the piston cylinder 54 is improved; and the soft sealing layer 55 after the small ball 512 is extruded and deformed can automatically recover the shape after the small ball 512 rolls away, and the friction force between the small ball 512 and the soft sealing layer 55 is greatly smaller than the friction force between the piston and the soft sealing layer 55, so that the breaking time of the soft sealing layer 55 is reduced.
Example 9
This example is a supplementary description of example 8.
The flexible sealing layer is made of a high-elasticity polymer material with reversible deformation, is elastic at room temperature, can generate large deformation under the action of small external force, and can recover the original shape after the external force is removed. The small ball can be made of steel which is resistant to corrosion of weak corrosive media such as air, steam, water and the like and chemical corrosive media such as acid, alkali, salt and the like, or other materials meeting the use requirements.
Example 10
The air-tight component is arranged between the air cylinder 5 and the air cylinder cover 53, and comprises an air cylinder cover gasket, an air valve component and an air valve gasket which are sequentially arranged, and further comprises an inner sealing ring and an outer sealing ring which are used for a diaphragm, wherein an inverted L-shaped first alarm channel is arranged between the inner sealing ring and the outer sealing ring, the first alarm channel is symmetrical relative to the diaphragm, and the first alarm channel is electrically connected with the detection system. The detection system comprises a pressure meter and a pressure switch; a discharge needle valve is also arranged between the first alarm channel and the detection system, the outer side of the discharge needle valve is connected with a pressure switch and a pressure gauge, the pressure gauge is YN-60, the diameter of a dial plate is 60mm, and the measuring range is 0-1.0 MPa; the range of the pressure switch is 0-1.0MPa, and the model is 502-7D/C; the diameter of the first alarm channel is 1.5-2 mm.
Example 11
This example is a supplementary explanation of example 5.
The first oil tank 63 and the second oil tank 64 are the same oil tank, and a filtering system is arranged in the oil tank. In the present invention, the first tank 63 is a tank for supplying the oil to the check valve inlet pipe 631, and the second tank 64 is a tank for collecting the oil overflowing from the check valve outlet pipe 632. When a filtration system is present, the first and second reservoirs 63, 64 may be the same reservoir as the one that is capable of filtering the spilled oil to a level that meets the criteria for the incoming oil.
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 (10)
1. A modular large-displacement diaphragm compressor having a multi-stage compression configuration, comprising: the compression system comprises a compression system (1) and a sledge body system (2) for supporting the compression system (1), wherein the sledge body system (2) comprises a bottom sledge (21) and a base (22) fixed on the bottom sledge (21); the compression system (1) comprises a first compression assembly (13) and a second compression assembly (14), the first compression assembly (13) and the second compression assembly (14) are respectively arranged on two sides of a motor (15), and the motor (15) is matched with a coupler and is respectively connected with a first crankshaft (16) and a second crankshaft (17); the first compression assembly (13) and the second compression assembly (14) respectively comprise at least one diaphragm compressor (18); the diaphragm compressor (18) is driven by an independent crank connecting rod mechanism (3), and the crank connecting rod mechanism (3) is fixed on the base (22) and driven by a main engine wheel to rotate;
the diaphragm compressor (18) comprises a crankcase (4), one end of the crankcase (4) far away from the base (22) is provided with a cylinder (5) communicated with the crankcase (4), a piston (51) is arranged in the cylinder (5), and the piston (51) is connected with a crank connecting rod mechanism (3) through a piston rod (52) and driven by the crank connecting rod mechanism (3) to do reciprocating motion; the cylinder (5) is further provided with a cylinder cover (53) in sealing connection with the cylinder body, at least one group of compression modules (6) is arranged in the cylinder (5), each compression module (6) comprises an oil distribution disc (61) and an air distribution disc (62) which are arranged in pairs, an oil inlet and an oil overflow hole leading to an oil cavity are formed in each oil distribution disc (61), an air inlet and an air outlet are formed in each air distribution disc (62), and diaphragms are arranged between each oil distribution disc (61) and each air distribution disc (62);
the oil-saving device also comprises a first oil tank (63), wherein the first oil tank (63) is connected to an oil inlet hole through a check valve oil inlet pipe (631), and an oil overflow hole is connected to a second oil tank (64) through a check valve oil outlet pipe (632); the air pump further comprises a first air pump (65), the first air pump (65) is connected to the air inlet hole through a one-way valve air inlet pipe (651), and the air outlet hole is communicated with the outside through a one-way valve air outlet pipe (652); in each group of compression modules (6), an oil inlet pipe (631) and an air inlet pipe (651) of the check valve are arranged independently, oil outlet pipes (632) of the check valves are connected in parallel and then connected to a second oil tank (64), and air outlet pipes (652) of the check valves are connected in parallel and then communicated with the outside.
2. A modular large displacement diaphragm compressor as claimed in claim 1 having a multi-stage compression configuration, wherein: the first compression assembly (13) and the second compression assembly (14) comprise a first-stage diaphragm compressor (10) and a second-stage diaphragm compressor (11), and the first-stage diaphragm compressor (10) and the second-stage diaphragm compressor (11) are arranged in a bilateral symmetry mode relative to the skid body system (2).
3. A modular large displacement diaphragm compressor as claimed in claim 1 having a multi-stage compression configuration, wherein: including one-level diaphragm compressor (10), second grade diaphragm compressor (11), tertiary diaphragm compressor (12) on first compression subassembly (13) and second compression subassembly (14), be the contained angle setting between one-level diaphragm compressor (10), second grade diaphragm compressor (11), the tertiary diaphragm compressor (12), wherein, one-level diaphragm compressor (10), second grade diaphragm compressor (11) for sledge body system (2) bilateral symmetry sets up, and is separated by 90 degrees contained angles between one-level diaphragm compressor (10) and tertiary diaphragm compressor (12), is separated by 90 degrees contained angles between second grade diaphragm compressor (11) and the tertiary diaphragm compressor (12).
4. A modular large displacement diaphragm compressor as claimed in claim 3 having a multi-stage compression configuration, wherein: the compression ratios of the first-stage diaphragm compressor (10), the second-stage diaphragm compressor (11) and the third-stage diaphragm compressor (12) are sequentially increased.
5. A modular large displacement diaphragm compressor as claimed in claim 1 having a multi-stage compression configuration, wherein: one side of the diaphragm, which is close to the oil distribution disc (61), is a high-pressure oil cavity, and one side of the diaphragm, which is close to the air distribution disc (62), is a high-pressure air cavity; the oil inlet hole and the oil spilling hole are soft oil hole plugs which are arranged on the end face of the high-pressure oil cavity in a penetrating mode, and the air inlet hole and the air exhaust hole are soft air hole plugs which are arranged on the end face of the high-pressure air cavity in a penetrating mode.
6. A modular large displacement diaphragm compressor as claimed in claim 5 having a multi-stage compression configuration wherein: the soft oil hole plug and the soft air hole plug are connected with the end surface of the high-pressure oil cavity and the end surface of the high-pressure air cavity in an interference fit mode, and the soft oil hole plug and the soft air hole plug are made of rubber materials.
7. A modular large displacement diaphragm compressor as claimed in claim 1 having a multi-stage compression configuration, wherein: the piston (51) is arranged in a piston cylinder (54) positioned in the cylinder (5), a soft sealing layer (55) is arranged on the inner wall of the piston cylinder (54), and the side surface of the piston (51) is abutted against the surface of the soft sealing layer (55).
8. A modular large displacement diaphragm compressor as claimed in claim 7 having a multi-stage compression configuration, wherein: the side of piston (51) is provided with a plurality of arc recess (511) along circumferential array, activity is inlayed in arc recess (511) and is equipped with bobble (512), the outside of arc recess (511) is extended to the partial spheroid of bobble (512).
9. A modular large displacement diaphragm compressor as claimed in claim 8 having a multi-stage compression configuration, wherein: if the radius of the small ball (512) is r, the small ball (512) extends to the ball outside the arc-shaped groove (511), the distance range of the outermost end of the small ball from the side surface of the piston (51) is h, and r/2 < h < r.
10. A modular large displacement diaphragm compressor as claimed in claim 1 having a multi-stage compression configuration, wherein: the first oil tank (63) and the second oil tank (64) are the same oil tank, and a filtering system is arranged in the oil tank.
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| CN202010236329.3A CN111271263A (en) | 2020-03-30 | 2020-03-30 | Modular diaphragm compressor with large-displacement and multi-stage compression structure |
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| CN202010236329.3A CN111271263A (en) | 2020-03-30 | 2020-03-30 | Modular diaphragm compressor with large-displacement and multi-stage compression structure |
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| CN114215725A (en) * | 2021-12-14 | 2022-03-22 | 西安交通大学 | Two-stage compression diaphragm compressor system |
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