CN102966511A - Dynamic balance type internal combustion air compressor - Google Patents

Abstract

The invention belongs to the technical field of compressor equipment, and relates to a dynamic balance type internal combustion air compressor. The power cylinder head assembly is fixedly connected with the machine body, and the power piston and the power cylinder liner are sealed through a piston ring; the power piston assembly and the connecting rod body are connected through a The piston pin is connected to form a rotary pair, the connecting rod body and the bearing bush ductile iron crankshaft installed inside the connecting rod head form a rotary pair, the connecting rod body and the connecting rod head are connected as a whole; the cylinder head assembly, steel valve plate and the body of the cylinder are connected Integral structure, the cylinder liner of the compressed air cylinder is connected with the machine body, the compressed air piston assembly and the compressed air cylinder liner are sealed by the piston ring, the compressed air piston assembly and the connecting rod body are connected by the piston pin to form a rotary pair; the return spring of the suction valve plate and the exhaust valve The return spring of the air valve plate is guided by a guide shaft; the principle is reliable, the structure is simple, the preparation cost is low, the energy conversion efficiency is high, the environment is friendly, the balance function is strong, and the application is extensive.

Description

A dynamic balance type internal combustion air compressor

Technical field:

The invention belongs to the technical field of compressor equipment, and relates to an energy state conversion device, in particular to a dynamic balance internal combustion air compressor for converting heat energy into air pressure energy for the purpose of improving dynamic balance performance.

Background technique:

The high-pressure air source required by the pneumatic machinery in the field is usually provided by the piston air compressor driven by the internal combustion engine through the conveyor belt. A series of problems such as poor energy saving and environmental protection effect. In addition, due to the addition of a belt drive in the traditional internal combustion engine-driven piston air compressor system, the energy conversion efficiency is reduced. Through novelty checks, there have been relevant literature reports on internal combustion air compressors with similar dynamic balance structures, such as: [1] Zhang Jizhong, Shang Pengfei, Zhao Hong, Zhang Yi. Dynamics Analysis of Internal Combustion Compressors [J]. China Mechanical Engineering 2008,19(20):2415～2418;

[2] Zhang Jizhong, Zhang Tiezhu, Zhang Hongxin, Dai Zuoqiang. Conceptual Design of Internal Combustion Compressor [J], Modern Manufacturing Engineering, 2005, (12): 90~92; etc., the "internal combustion compressor" involved in the above literature Or "internal combustion compressor" uses a connecting rod to connect the power piston and the compressor piston into a whole, and reciprocates together to realize the suction and exhaust actions. Its structure and working principle basically belong to conventional technology. The above-mentioned The "internal combustion compressor" or "internal combustion air compressor" involved in the literature does not involve and effectively solve the dynamic balance problem; therefore, it is very valuable to seek to design and prepare an internal combustion air compressor with a new structure and principle. This kind of compressor has good dynamic balance performance, realizes the integration of internal combustion engine and air compressor, and adopts two groups of crank-link mechanisms arranged symmetrically to convert the reciprocating movement of the power piston into the reciprocating movement of the compressor piston, effectively solving the dynamic balance problem , eliminate the disadvantages of large vibration and noise of the traditional internal combustion engine driven piston air compressor system, reduce weight, save space, and improve energy conversion efficiency. As a power source for wind machinery in field operations, it has great application prospects and social and economic value. .

Invention content:

The purpose of the present invention is to overcome the shortcomings of the prior art, to integrate the internal combustion engine and the air compressor into a whole, and to convert the reciprocating movement of the power piston into the reciprocating movement of the compressor piston by adopting two groups of symmetrically arranged crank-link mechanisms to realize heat energy The expected function of converting into air pressure energy; effectively solve the problem of dynamic balance, eliminate the disadvantages of large vibration and noise of the traditional internal combustion engine driven piston air compressor system, reduce weight, save space, and improve energy conversion efficiency; design and prepare a A new type of dynamic balance internal combustion air compressor.

In order to achieve the above object, the main structure of the present invention includes a body, a power cylinder head assembly, a power cylinder liner, a power piston assembly, a piston pin, a connecting rod body, a bearing bush, a connecting rod head, a crankshaft, an air compressor piston assembly, and an air compressor cylinder. sleeve, valve plate, compression cylinder head assembly, suction valve plate, suction valve plate return spring, exhaust valve plate return spring and exhaust valve plate; the power cylinder cylinder head assembly is fixed to the aluminum alloy body with four M12 bolts The connection is an integrated structure. The power cylinder cylinder liner made of copper alloy is connected with the body by interference fit. The power piston and power cylinder liner made of aluminum alloy adopt clearance fit and seal through the piston ring; the power piston assembly and the alloy The connecting rod body made of steel is connected by a steel piston pin to form a rotary pair. The split bearing bush is installed inside the connecting rod body and the connecting rod head. The bearing bush and the nodular cast iron crankshaft adopt a clearance fit to form a rotary pair. The head is connected as a whole with two M8 bolts; the cylinder head assembly, the steel valve plate and the body are connected with four M12 bolts respectively as an integrated structure, and the cylinder liner made of copper alloy is connected with the body by interference fit. The compressed air piston assembly and the compressed air cylinder liner made of aluminum alloy adopt clearance fit and are sealed by the piston ring. The compressed air piston assembly and the connecting rod body are connected by a steel piston pin to form a rotary pair; the return spring of the suction valve plate is installed on the The guide shaft in the cylinder head assembly of the cylinder is guided, and the rightmost ring spring is fixed with the guide shaft by interference fit, and the leftmost ring spring is connected with the suction valve piece by bonding; The return spring of the valve plate is guided by the guide shaft installed in the cylinder head assembly of the cylinder. The rightmost ring of spring and the guide shaft are fixed by interference fit, and the leftmost ring of spring is glued to the exhaust valve plate. Knotted into one.

The power cylinder head assembly, power piston assembly, piston pin, connecting rod body, bearing bush, and connecting rod head involved in the present invention are the same as the corresponding parts of the traditional internal combustion engine. Plate return spring, exhaust valve plate return spring, exhaust valve plate and the corresponding parts of the piston air compressor are the same; Ensure that the quality is equal to that of the power piston assembly. A valve plate is installed between the cylinder block and the cylinder head assembly. Other auxiliary systems of the power cylinder, such as the gas distribution system, lubrication system, cooling system, and start-up system, are the same as those of the internal combustion engine; the body is based on The structural requirements of the power cylinder and the compression cylinder and their own characteristics are designed; when working, the power piston reciprocates under the fuel mixture combustion and flywheel inertial drive, the crankshaft rotates and drives the compression piston to reciprocate through the connecting rod; The two sets of crank-link mechanisms are arranged symmetrically, so when the power piston moves to the right, the compressor piston moves to the left at the same speed. At this time, the suction valve is opened, the exhaust valve is closed, and the external air passes through the intake pipe. Enter the compression cylinder; when the power piston moves to the left, the compression piston moves to the right at the same speed, at this time, the suction valve is closed, the air in the compression cylinder is compressed, and when the predetermined pressure is reached, the exhaust valve is opened , the high-pressure air is transported to the gas storage tank through the pipeline for standby; the working conditions of the power cylinder gas distribution system, lubrication system, cooling system, starting system and other auxiliary systems are the same as those of the internal combustion engine auxiliary system.

The technical solution of the present invention is to integrate the internal combustion engine and the piston compressor, and the two sets of crank-and-rod mechanisms of the main mechanism of the internal combustion engine and the main mechanism of the compressor adopt a completely symmetrical arrangement and share a crankshaft; when it works, the power Driven by the crank-link mechanism, the piston moves to the right, and negative pressure is generated in the power cylinder, and the air enters the power cylinder through the intake valve. At the same time, the crankshaft drives the compressor piston to the same instantaneous speed as the power piston through another set of connecting rods. Move to the left, at this time, the suction valve is opened, the exhaust valve is closed, and the external air enters the cylinder body; then the crankshaft drives the power piston to move to the left, the intake and exhaust valves are closed, and the air in the power cylinder is insulated Compression, the temperature of the compressed gas rises, at the same time, the crankshaft drives the compressor piston to move to the right through another set of connecting rods, the suction valve is closed, the air in the compressor cylinder is compressed, and when the predetermined pressure is reached, the exhaust valve is opened , the high-pressure air is sent to the air storage tank through the pipeline for standby; when the power piston moves to the left and reaches a little before the left dead center, the diesel oil is sprayed into the cylinder through the fuel injector under the high pressure of the fuel injection pump, and becomes misty fine oil droplets that come into contact with the cylinder. High-temperature and high-pressure air, self-igniting and burning pushes the power piston to move to the right and drives the crankshaft to rotate through the connecting rod. The crankshaft drives the compressor piston assembly to move to the left at the same instantaneous speed as the power piston through another set of connecting rods. The valve plate is opened, the exhaust valve plate is closed, and the external air enters the cylinder body; the crankshaft relies on the kinetic energy stored by the flywheel to drive the power piston to move leftward through the connecting rod to complete the exhaust action of the combustion exhaust gas in the power cylinder. At the same time, the crankshaft passes through another The set of connecting rods drives the compressor piston assembly to move to the right, the suction valve is closed, the air in the compressor cylinder is compressed, and when the predetermined pressure is reached, the exhaust valve is opened, and the high-pressure air is sent to the air storage tank through the pipeline for standby; in the power piston In one working cycle, the compression piston assembly realizes two working cycles, and the crank connecting rod mechanism still drives the auxiliary system of the internal combustion engine to work during the working process.

In the present invention, since the two sets of crank-link mechanisms that drive the power piston and the compressor piston adopt a symmetrical arrangement, the size and quality of each component in the mechanism are completely symmetrical, so the total center of mass of the two sets of crank-link mechanisms will remain stationary during the movement process. , The inertial force generated during work is completely balanced, which effectively solves the problems of large vibration and noise during the working process of the traditional internal combustion engine-driven piston air compressor.

Compared with the prior art, the present invention integrates the internal combustion engine and the air compressor into a whole, adopts two sets of crank-link mechanisms arranged symmetrically to convert the reciprocating movement of the power piston into the reciprocating movement of the compressor piston, and realizes the conversion of heat energy into air pressure The expected function of energy can effectively solve the problem of dynamic balance. The new internal combustion air compressor structure is light in weight, saves space, and has high energy conversion efficiency. It is suitable for use as a power source for wind machinery in field operations; its overall structural principle Reliable, simple combination structure, low preparation cost, high energy conversion efficiency, friendly use environment, low noise, light vibration, strong balance function, and wide application.

Description of drawings:

Fig. 1 is a schematic diagram of the principle of the front structure of the main body of the present invention.

Fig. 2 is a schematic diagram of the principle of the horizontal section structure of the main body of the present invention.

Detailed ways:

Example:

The structural principles of the present invention will be further elaborated below in conjunction with the accompanying drawings and through embodiments.

The technical solution of this embodiment is to integrate the internal combustion engine and the piston compressor into one, and the two sets of crank-and-rod mechanisms of the main mechanism of the internal combustion engine and the main mechanism of the compressor adopt a completely symmetrical arrangement and share one crankshaft; when it works, The power piston 4 moves to the right under the drive of the crank-link mechanism, a negative pressure is generated in the power cylinder, and the air enters the power cylinder through the intake valve. 4 move to the left at the same instantaneous speed, at this time, the suction valve plate 14 is opened, the exhaust valve plate 17 is closed, and the external air enters the cylinder body; then the crankshaft 9 drives the power piston 4 to move to the left, and the intake and exhaust valves are both Close, the air in the power cylinder is adiabatically compressed, the temperature of the compressed gas rises, at the same time, the crankshaft 9 drives the compressor piston to move to the right through another set of connecting rods, the suction valve plate 14 is closed, and the air in the compressor cylinder is compressed , when the predetermined pressure is reached, the exhaust valve plate 17 is opened, and the high-pressure air is sent to the air storage tank through the pipeline for standby; Sprayed into the cylinder, the fine oil droplets that become mist come into contact with high-temperature and high-pressure air, ignite and burn by themselves to drive the power piston 4 to move to the right and drive the crankshaft 9 to rotate through the connecting rod, and the crankshaft 9 drives the compressor piston assembly 10 through another set of connecting rods. The same instantaneous speed as the power piston moves to the left. At this time, the suction valve plate 14 is opened, the exhaust valve plate 17 is closed, and the external air enters the cylinder body; The left movement completes the exhaust action of combustion exhaust gas in the power cylinder. At the same time, the crankshaft 9 drives the compressor piston assembly 10 to move to the right through another set of connecting rods, the suction valve plate 14 is closed, and the air in the compressor cylinder is compressed to reach the predetermined level. After pressure, the exhaust valve plate 17 is opened, and the high-pressure air is delivered to the air storage tank through the pipeline for standby; in one working cycle of the power piston 4, the compressed air piston assembly 10 realizes two working cycles, and the crank connecting rod is still used in the working process. The mechanism drives the auxiliary systems of the internal combustion engine to work.

In this embodiment, because the two sets of crank-link mechanisms that drive the power piston and the compressor piston adopt a symmetrical arrangement, the size and quality of each member in the mechanism are completely symmetrical, so the total center of mass of the two sets of crank-link mechanisms will remain the same during the movement. The inertial force generated during the work is completely balanced, which effectively solves the problems of large vibration and noise during the working process of the traditional internal combustion engine-driven piston air compressor.

The main structure in this embodiment includes body 1, power cylinder head assembly 2, power cylinder liner 3, power piston assembly 4, piston pin 5, connecting rod body 6, bearing bush 7, connecting rod head 8, crankshaft 9, compressed air Piston assembly 10, cylinder liner 11, valve plate 12, cylinder head assembly 13, suction valve plate 14, suction valve plate return spring 15, exhaust valve plate return spring 16 and exhaust valve plate 17; power The cylinder head assembly 2 is fixedly connected with the aluminum alloy body 1 with four M12 bolts and is an integral structure. The power cylinder cylinder liner 3 made of copper alloy is connected with the body 1 by interference fit. The power piston made of aluminum alloy is connected with the power cylinder. The cylinder liner 3 adopts clearance fit and is sealed by the piston ring; the power piston assembly 4 and the connecting rod body 6 made of alloy steel are connected through the steel piston pin 5 to form a rotary pair, and the connecting rod body 6 and the connecting rod head 8 are installed inside There is a split bearing bush 7, the bearing bush 7 and the ductile iron crankshaft 9 adopt a clearance fit to form a rotary pair, the connecting rod body 6 and the connecting rod head 8 are connected as a whole with two M8 bolts; the cylinder head assembly 13 of the cylinder, the steel valve plate 12 and the body 1 are respectively connected with four M12 bolts as an integral structure, the cylinder liner 11 made of copper alloy is connected with the body 1 by interference fit, the piston assembly 10 made of aluminum alloy and the liner 11 are made of Clearance fit and sealed by piston ring, the compressor piston assembly 10 is connected with the connecting rod body through a steel piston pin to form a rotary pair; the return spring 15 of the suction valve plate is guided by the guide shaft installed in the cylinder head assembly 13 , the rightmost circle of spring and the guide shaft are fixed by interference fit, and the leftmost circle of spring is connected with the suction valve plate 14 by bonding; the exhaust valve plate return spring 16 is installed on the cylinder The guide shaft in the cylinder head assembly 13 is guided, and the rightmost ring spring is fixed with the guide shaft by interference fit, and the leftmost ring spring is connected with the exhaust valve plate 17 by bonding.

The power cylinder head assembly 2, power piston assembly 4, piston pin 5, connecting rod body 6, bearing bush 7, and connecting rod head 8 involved in this embodiment are the same as the corresponding parts of the traditional internal combustion engine. The cylinder head assembly 13, Suction valve plate 14, suction valve plate return spring 15, exhaust valve plate return spring 16, exhaust valve plate 17 are the same as the parts corresponding to the piston air compressor; Arranged at a distance of 180°, the quality of the compressor piston assembly 10 should be equal to that of the power piston assembly during design and manufacture, and a valve plate 12 is installed between the compressor cylinder body and the cylinder head assembly, and other auxiliary systems of the power cylinder such as air distribution system and lubrication system , cooling system, starting system, etc. are the same as the auxiliary system of the internal combustion engine; the body is structurally designed according to the structural requirements of the power cylinder and the compression cylinder and its own characteristics; when working, the power piston 4 is reciprocating under the combustion of the fuel mixture and the inertial drive of the flywheel. The crankshaft 9 rotates and drives the compressor piston to reciprocate through the connecting rod; since the two sets of crank-and-rod mechanisms are symmetrically arranged, when the power piston moves to the right, the compressor piston moves to the left at the same speed. At this time, The suction valve plate 14 is opened, the exhaust valve plate 17 is closed, and the external air enters the compression cylinder body through the intake pipe; when the power piston 4 moves to the left, the pressure piston moves to the right at the same speed, at this time, the suction valve When the sheet 14 is closed, the air in the compression cylinder is compressed. When the predetermined pressure is reached, the exhaust valve sheet 17 is opened, and the high-pressure air is sent to the air storage tank through the pipeline for standby; power cylinder air distribution system, lubrication system, cooling system, starting system, etc. The working conditions of other auxiliary systems are the same as those of the internal combustion engine auxiliary systems.

Claims (3)

1. a dynamic balancing formula internal combustion air compressor is characterized in that agent structure comprises body, ram cylinder cover component, ram cylinder sleeve, power piston assembly, wrist pin, connecting rod shank, bearing shell, connecting rod head, bent axle, displacer assembly, air cylinder cylinder sleeve, valve plate, air cylinder cylinder cover component, suction valve chip, suction valve chip Returnning spring, exhaust valve plate Returnning spring and exhaust valve plate; The ram cylinder cover component is with four M12 bolts and the aluminum alloy organism formula structure that is connected to one, ram cylinder sleeve with copper alloy made adopts interference fit to be connected with body, and power piston and the power cylinder sleeve made of aluminum alloy adopt Spielpassung and realize sealing by piston ring; The power piston assembly is connected and forms rotary pair with the connecting rod shank of making of alloyed steel by the steel piston pin, connecting rod shank and connecting rod head inside are equipped with split bushing, bearing shell and ductile iron crankshaft adopt Spielpassung to form rotary pair, and connecting rod shank is connected in aggregates with connecting rod head with two M8 bolts; Air cylinder cylinder cover component, steel valve plate and body connect as one the formula structure with four M12 bolts respectively, air cylinder cylinder sleeve with copper alloy made adopts interference fit to be connected with body, adopt Spielpassung and realize sealing by piston ring with the aluminum alloy displacer assembly of making and the cylinder sleeve of calming the anger, displacer assembly is connected and forms rotary pair with connecting rod shank by the steel piston pin; The axis of guide that the utilization of suction valve chip Returnning spring is installed in the air cylinder cylinder cover component leads, and a coil spring and the axis of guide of its low order end are fixed with interference fit, and a coil spring of its high order end is connected by bonding mode with suction valve chip; The axis of guide that the utilization of exhaust valve plate Returnning spring is installed in the air cylinder cylinder cover component leads, and a coil spring and the axis of guide of its low order end are fixed with interference fit, a coil spring of its high order end be connected by bonding mode with exhaust valve plate.

2. dynamic balancing formula internal combustion air compressor according to claim 1, each component corresponding to the ram cylinder cover component that it is characterized in that relating to, power piston assembly, wrist pin, connecting rod shank, bearing shell, connecting rod head and traditional combustion engine are identical, and each component that air cylinder cylinder cover component, suction valve chip, suction valve chip Returnning spring, exhaust valve plate Returnning spring, exhaust valve plate and piston type air compressor are corresponding are identical; Bent axle adopts crutches structural type, the crank pin 180 ° of layouts of being separated by, displacer assembly should guarantee to equate with the power piston assembly quality when designing and producing, calm the anger and install valve plate additional between cylinder body and the air cylinder cap assemblies, other subsystems of ram such as gas distribution system, lubrication system, cooling system, start-up system etc. are identical with the internal-combustion engine subsystem; Body carries out structural design according to ram and air cylinder structural requirement and own characteristic; During work, power piston is reciprocating under the promotion of fuel mix gas firing and the driving of flywheel inertia, and bent axle rotates and be reciprocating by connecting rod driving displacer; Because two suite handle linkage mechanisms adopt and are arranged symmetrically with, so when power piston moved right, displacer was moved to the left with the speed of formed objects, at this moment, suction valve chip is opened, and exhaust valve plate is closed, and outside air enters the cylinder body of calming the anger through suction tude; When power piston during to left movement, displacer moves right with the speed of formed objects, and at this moment, suction valve chip is closed, and air is compressed in the cylinder body of calming the anger, reach predetermined pressure after, exhaust valve plate is opened, high-pressure air is for subsequent use to gas holder by Pipeline transport; The working condition of other subsystems such as ram gas distribution system, lubrication system, cooling system, start-up system is identical with internal-combustion engine subsystem working condition.

3. dynamic balancing formula internal combustion air compressor according to claim 1, it is characterized in that internal-combustion engine and piston compressor are become one, the main machine frame of internal-combustion engine and the main machine frame of compressor two suite handle linkage mechanisms adopt the arrangement of full symmetric and share a bent axle; During its work, power piston moves right under connecting rod drives, produce negative pressure in the ram, air enters ram through intake valve, and meanwhile, bent axle drives displacer by another group connecting rod and is moved to the left with the instantaneous velocity identical with power piston, at this moment, suction valve chip is opened, and exhaust valve plate is closed, and outside air enters in the cylinder body of calming the anger; Then the crank-driven power piston is to left movement, the inlet and outlet door is all closed, the insulated compression of air in the ram, the temperature of pressurized gas raises, meanwhile, bent axle drives displacer by another group connecting rod and moves right, suction valve chip is closed, and the air of calming the anger in the cylinder body is compressed, reach predetermined pressure after, exhaust valve plate is opened, and high-pressure air is for subsequent use to gas holder by Pipeline transport; When power piston move left arrive left stop slightly before the time, diesel oil sprays into cylinder through oil sprayer under the Injection Pump high pressure, become vaporific tiny oil droplet and touch the High Temperature High Pressure air, ignition propulsion power piston moves right and rotates by the connecting rod driving crank voluntarily, bent axle drives displacer assembly by another group connecting rod and is moved to the left with the instantaneous velocity identical with power piston, and at this moment, suction valve chip is opened, exhaust valve plate is closed, and outside air enters in the cylinder body of calming the anger; The kinetic energy that bent axle relies on flywheel to store drives power piston is finished exhaust action from ram internal combustion waste gas to left movement by connecting rod, meanwhile, bent axle drives displacer assembly by another group connecting rod and moves right, suction valve chip is closed, the interior air of the cylinder body of calming the anger is compressed, after reaching predetermined pressure, exhaust valve plate is opened, and high-pressure air is for subsequent use to gas holder by Pipeline transport; In a work cycle of power piston, displacer assembly is realized two work cycle, still drives the work of internal-combustion engine subsystem by connecting rod in the working procedure.

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