Piston structure of booster compressor

Abstract

The utility model provides a booster compressor piston structure which is mainly composed of a piston body, a first guide ring groove, a first sealing ring groove, a second guide ring groove, a third guide ring groove, a second sealing ring groove and a fourth guide ring groove are formed in the piston body, a buffer plunger is arranged at the bottom of the piston body, a bottom screw hole is formed in the bottom of the piston body, and an anti-collision ring is installed at the position of the bottom screw hole. When the piston body moves to a lower dead center, the buffer plunger is inserted into a hydraulic dead zone, so that the hydraulic pressure is increased, and the movement speed of the piston is reduced; the anti-collision ring can prevent the piston body from directly colliding with the cylinder bottom, and the anti-collision ring is made of a soft material, so that damage caused by collision can be reduced; the anti-collision ring is connected with the piston body through a screw, replacement is convenient, and the stroke of the piston can be adjusted by adjusting the height of the anti-collision ring. According to the utility model, the damage to the piston body material caused by the impact between the variable-diameter piston and the cylinder body can be effectively reduced, the experimental test and structure optimization are facilitated, and the safety and reliability of equipment are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of compressor pistons, in particular to a booster compressor piston structure. Background Art

[0002] An ion compressor is a special type of positive displacement compressor. It primarily consists of a gas compression section, a hydraulic drive section, and a variable-diameter piston for transmission. Its operating principle is that in the hydraulic drive section, a reciprocating pump with a volume-changing chamber drives hydraulic oil into and out of the lower portion of a combined cylinder, which in turn drives the variable-diameter piston within the combined cylinder to reciprocate. Above the variable-diameter piston is the gas compression section, where intake and exhaust valves work together to complete the intake, compression, exhaust, and expansion processes. Ion compressors offer advantages such as excellent sealing performance, high volumetric efficiency, and large exhaust volume.

[0003] The ion compressor's variable-diameter piston moves under the combined action of hydraulic and pneumatic pressure, unconstrained by a fixed mechanism. This free movement creates the potential for the variable-diameter piston to strike the bottom of the cylinder, increasing the risk of damage to the piston and cylinder. Utility Model Content

[0004] In order to solve the problems of the prior art, the utility model provides a booster compressor piston structure, which reduces the damage to the piston and cylinder body caused by the piston hitting the bottom of the cylinder body by adding a buffer plunger, a bottom screw hole and an anti-collision ring, thereby improving the safety and reliability of the equipment.

[0005] The utility model includes a piston body, wherein the upper end of the piston body is provided with a first guide ring groove, a first sealing ring groove, and a second guide ring groove in order from top to bottom, and the lower end of the piston body is provided with a third guide ring groove, a second sealing ring groove, and a fourth guide ring groove in order from top to bottom. The bottom of the piston body is provided with a buffer plunger and a plurality of bottom screw holes, and an anti-collision ring is installed in the bottom screw holes.

[0006] As a further improvement, the bottom screw holes are distributed equidistantly on the circumference around the buffer plunger.

[0007] As a further improvement, the buffer plunger is chamfered or processed into a conical structure.

[0008] As a further improvement, the anti-collision ring is connected to the bottom of the piston body by screws. The anti-collision ring can be replaced at any time, and anti-collision rings of different heights can be selected according to needs.

[0009] The beneficial effects of the utility model are:

[0010] 1. By adding an anti-collision ring at the bottom, the piston body is prevented from directly colliding with the cylinder bottom, thereby increasing the service life of the equipment.

[0011] 2. The anti-collision ring is connected to the piston body by screws, which is easy to replace and reduces operating costs.

[0012] 3. Anti-collision rings of different heights are used to make the stroke height of the piston adjustable.

[0013] 4. The bottom adopts a buffer plunger design, which uses the hydraulic pressure generated when the buffer plunger is inserted into the dead zone to reduce the speed of the piston movement at the dead point of the piston's reciprocating motion. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 This is an appearance diagram of the piston of the booster compressor in the embodiment of the present utility model.

[0016] Figure 2 It is a front view of the piston of the booster compressor in the embodiment of the present utility model.

[0017] Reference numerals:

[0018] Piston body 1, first guide ring groove 2, first sealing ring groove 3, second guide ring groove 4, third guide ring groove 5, second sealing ring groove 6, fourth guide ring groove 7, bottom screw hole 8, buffer plunger 9. DETAILED DESCRIPTION

[0019] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] like Figure 2 As shown, due to the operating characteristics of the compressor, the gas above piston body 1 undergoes four stages within a single cycle: compression, exhaust, expansion, and intake. Gas pressure fluctuates within a single cycle. The pressure in the hydraulic system below piston body 1 also fluctuates within a certain range. The piston body's dead center is difficult to determine, and collision with the cylinder body is possible.

[0021] The booster compressor piston structure disclosed in the utility model is as follows Figure 1As shown, the operating principle is as follows: a gas-liquid piston design is employed to ensure perfect piston centering. Four guide rings are positioned in the first, second, third, and fourth guide ring grooves 2, 4, 5, and 7, ensuring that the piston body 1 moves only in the vertical direction. Sealing rings are placed in the first and second sealing ring grooves 3 and 6, respectively, to prevent leakage of high-pressure gas and hydraulic oil, which could cause gas contamination.

[0022] The piston body 1 moves in the vertical direction. When it moves to the bottom dead center, the buffer plunger 9 is inserted into the hydraulic dead zone, which increases the hydraulic pressure and reduces the downward movement speed of the piston body. If the piston body 1 moves too much, it is still possible for the piston body 1 to hit the cylinder body. At this time, the anti-collision ring installed at the bottom screw hole 8 collides with the cylinder body. Since the anti-collision ring is made of a softer material, it can effectively reduce the damage caused by the impact. To replace the anti-collision ring, you only need to loosen the bottom screw. The operation is simple and convenient. During the equipment debugging process, anti-collision rings of different heights are set and replaced to test the optimal piston stroke height.

[0023] The anti-collision ring can be made of a softer metal material, such as copper, or a softer non-metallic material, such as resin.

[0024] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device embodiment, the above is only a preferred implementation method of the present invention. Since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment. The above is only a specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with this technical field is within the technical scope disclosed by this utility model. For ordinary technicians in this technical field, changes or replacements that can be easily thought of should be included in the protection scope of this utility model without departing from the principle of this utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims

1. A booster compressor piston structure, comprising a piston body (1), wherein the upper end of the piston body (1) is provided with a first guide ring groove (2), a first sealing ring groove (3), and a second guide ring groove (4) in sequence from top to bottom, and the lower end of the piston body (1) is provided with a third guide ring groove (5), a second sealing ring groove (6), and a fourth guide ring groove (7) in sequence from top to bottom, characterized in that: The bottom of the piston body (1) is provided with a buffer plunger (9) and a plurality of bottom screw holes (8), and an anti-collision ring is installed at the bottom screw holes (8).

2. The booster compressor piston structure according to claim 1, characterized in that: The bottom screw holes (8) are distributed equidistantly on the circumference around the buffer plunger (9).

3. The booster compressor piston structure according to claim 1, characterized in that: The buffer plunger (9) is chamfered.

4. The booster compressor piston structure according to claim 1, characterized in that: The buffer plunger (9) has a conical structure.

5. The booster compressor piston structure according to claim 1, characterized in that: The anti-collision ring is connected to the bottom of the piston body (1) via screws.

6. The booster compressor piston structure according to claim 1, characterized in that: The anti-collision rings have different heights.

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