Horizontal gas compressor with free lifting piston

Abstract

A reciprocating gas horizontal compressor with free lifting piston, which includes a piston with straight ends and inclined compression chambers, a crankcase in which are mounted a crankshaft, a connecting rod fixed to a cross head thru a bolt which alternately drives in a cross-head body a piston rod, and a cylinder body which contains a cylinder liner in which is moving rectilinear and alternatively an improved piston provided with straight ends and compression chambers inclined in areas (m) and (k), with the same angle and in the same plane as a zone (p) from a first cylinder head element and respectively in a zone (n) from a second cylinder head element, and some magnets fixed to the piston and some magnets fixed outside and to a lower part of the cylinder liner, through which the piston is free lifting on the stroke length with reduced friction.

Claims

1. A reciprocating gas horizontal compressor with a free lifting piston, the compressor including a crankcase, a crankshaft, a cross head, a distance piece, a cylinder, a piston rod, an oil wiper case, an auxiliary gas case, a main gas case, suction valves and discharge valves, wherein the piston has some straight ends and some inclined compression chambers (m) and (k) which make, together with zone (n) from a first inclined cylinder head element and zone (p) from a second inclined cylinder head element, two inclined gas compression chambers in the cylinder, one at each end of the cylinder for gas compression, wherein free lifting of the piston along the length of the stroke is by direct action of the pressure on the inclined surfaces of the piston head, and the compressor is provided with permanent magnets fixed to a lower part of the piston on two or more rows, and permanent magnets fixed in the cylinder under a cylinder liner, the permanent magnets under the liner creating a magnetic field opposed to a field created by the permanent magnets on the lower part of the piston that produces simultaneous free lifting and sliding effects on the piston, without friction or with low friction over the entire length of the stroke.

2. The reciprocating gas horizontal compressor according to claim 1, wherein the first inclined cylinder head element is fixed to a first cylinder head and the second inclined cylinder head element is fixed to a second cylinder head at the other end, respectively zones (n) and (p).

3. A reciprocating gas horizontal compressor with a free lifting piston, the compressor including a crankcase, a crankshaft, a cross head, a distance piece, a cylinder, a piston rod, an oil wiper case, an auxiliary gas case, a main gas case, suction valves and discharge valves, wherein the piston has some straight ends and some inclined compression chambers (m) and (k) which make, together with zone (n) from a first inclined cylinder head element and zone (p) from a second inclined cylinder head element, two inclined gas compression chambers in the cylinder, one at each end of the cylinder for gas compression, wherein free lifting of the piston along the length of the stroke is by direct action of the pressure on the inclined surfaces of the piston head, and the compressor is provided with permanent magnets fixed to a lower part of the piston on two or more rows, and permanent magnets fixed in the cylinder under a cylinder liner, the permanent magnets under the liner creating a magnetic field opposed to a field created by the permanent magnets on the lower part of the piston that produces simultaneous free lifting and sliding effects on the piston, without friction or with low friction over the entire length of the stroke, wherein the piston is equipped with two guiding bushings with inclined faces mounted on the piston rod, so that the inclined faces of the bushings form part of the inclined compression chambers (m) and (k), and together with inclined zones (n) and (p) of the first and second inclined cylinder head elements fixed to the first and second respective cylinder heads, make the two gas compression chambers that allow free lifting of the piston within the limit of the clearances at the end of the stroke opposite to zones (n) and (p) from the first and second respective cylinder heads.

4. The reciprocating gas horizontal compressor according to claim 1, wherein the inclined zones (n) and (p) of the cylinder heads, together with similar inclined angles of the inclined compression chambers (m) and (k) respectively from the piston ends, keep the clearance at each end of the piston stroke.

5. The reciprocating gas horizontal compressor according to claim 2, wherein the inclined zones (n) and (p) of the cylinder heads, together with similar inclined angles of the inclined compression chambers (m) and (k) respectively from the piston ends, keep the clearance at each end of the piston stroke.

6. The reciprocating gas horizontal compressor according to claim 3, wherein the inclined zones (n) and (p) of the cylinder heads, together with similar inclined angles of the inclined compression chambers (m) and (k) respectively from the piston ends, keep the clearance at each end of the piston stroke.

7. A reciprocating gas horizontal compressor with a free lifting piston, the compressor including a crankcase, a crankshaft, a cross head, a distance piece, a cylinder, a piston rod, an oil wiper case, an auxiliary gas case, a main gas case, suction valves and discharge valves, wherein the piston has some straight ends and some inclined compression chambers (m) and (k) which make, together with zone (n) from a first inclined cylinder head element and zone (p) from a second inclined cylinder head element, two inclined gas compression chambers in the cylinder, one at each end of the cylinder for gas compression, and free lifting of the piston is by direct action of the pressure on the inclined surfaces of the piston head, and the compressor is provided with permanent magnets fixed to a lower part of the piston on two or more rows, and permanent magnets fixed in the cylinder under a cylinder liner, the permanent magnets under the liner creating a magnetic field opposed to a field created by the permanent magnets on the lower part of the piston that produces simultaneous free lifting and sliding effects on the piston, without friction or with low friction over the entire length of the stroke, wherein the cylinder has at both ends inclined compression chambers, made from the two inclined compression chambers (m) and (k) in the piston, and the first inclined cylinder head element is fixed to a first cylinder head, and the second inclined cylinder head element is fixed to a second cylinder head at the other end, respectively zones (n) and (p), wherein the piston is equipped with two guiding bushings with inclined faces mounted on the piston rod, so that the inclined faces of the bushings form part of the inclined compression chambers (m) and (k), and together with inclined zones (n) and (p) of the inclined cylinder head elements fixed to first and second cylinder heads, respectively make the two gas compression chambers for free lifting of the piston within the limit of the clearances at the end of the stroke opposite to zones (n) and (p) from the first and second respective cylinder heads, and wherein the inclined zones (n) and (p) of the cylinder heads, together with similar inclined angles of the inclined compression chambers (m) and (k) respectively from the piston ends, keep the clearance at each end of the piston stroke.

Description

SHORT DESCRIPTION OF THE DRAWINGS

(1) FIG. 1: Horizontal gases compressor with free lifting piston—section;

(2) FIG. 2: cylinder cross-section of horizontal, gas compressor, with inclined heads and inclined compression chambers, equipped with permanent magnets;

(3) FIG. 3: cross section thru piston and cylinder liner, equipped with permanent magnets

DETAILED DESCRIPTION OF THE INVENTION

(4) The horizontal compressor gas piston compressor includes: a crankcase (29) in which a crankshaft (28) is mounted, a connecting rod (27) fixed to a crosshead (26) thru a bolt (25) which alternately drives in a cross-head body (23) a piston rod (7) into some distance pieces (22 and 21), and a cylinder body (8). The separation of the oil from the crankcase is done through an oil wiper case (24) and the gas sealing of the compression chamber is made through an auxiliary gas packing (20) and a main gas packing (1). Suction and discharge of the compressed gas is made through some valves (14 and 18) which are fixed in some valve covers (15 and 19). A cylinder body (8) contains a cylindrical liner (6) in which, rectilinear and alternatively moving is an improved piston (11) equipped with some guiding bushings (5 and 12) provided with straight ends and inclined compression chambers (k) and (m) with the same angle and in the same plane as zone (n) of a cylinder head element (32) mounted on a cylinder head (17), and zone (p) of a cylinder head element (33) mounted on a cylinder head (2), through which a piston (11) is free lifting on the stroke length. A piston (11) is mounted on a piston rod (7) through a piston nut (13) and is equipped with some rider rings (10) arranged in some channels of a piston (11) to assure the mounting of a piston (11) and a piston rod (7) without direct contact with a cylinder liner (6) and some piston segments (9) located in some channels of a piston (11) for gas compression and sealing of a piston (11) into a cylinder (8), along the length of the stroke.

(5) In order to have additional free lifting effect and [[the]] reduced friction movement, some magnets (30) are fixed on a piston (11) and some magnets (31) fixed in a cylinder (8) on the outside diameter and on the lower part of a cylinder liner (6). Suction of the gas is made through some valves (14) along the length stroke of a piston (11) in a cylinder (8) and with compression of the gas on the return stroke of a piston (11). The free lifting of the piston is made by the action of the gas pressure in a inclined chamber until the end of the stroke, when some discharge valves (18) are opened; the free lifting action is concurrent and opposed as an event on the double stroke of a piston (11) with a present and alternate effect at each compression sequence on the alternate movement of a piston (11), when gas suction is made in the head of a cylinder (8) from the cylinder head (17), concurrent with compressing of the gas between a piston (11) and a cylinder head (2) and a cylinder head element (33) and, respectively, suction of the gas on the return stroke of a piston (11) through some suction valves (14) and compressing of the gas between a piston (11) and a cylinder head (17) and a cylinder head element (32).

(6) The invention described above is not limited only at the disclosed example, respectively only to horizontal compressors with a single cylinder; the solution can be applied also to the horizontal compressor with many cylinders.