Reciprocating compressor

Abstract

The utility model discloses a reciprocating compressor which comprises a compressor control end and a machine body driving part, gas compression parts are arranged on the two sides of the machine body driving part, working cavities are formed in the gas compression parts, and piston components extending into the working cavities are installed on the machine body driving part. Buffer gas chambers located on the two sides of the working cavity are arranged in the gas compression part, the piston component moves to the buffer gas chambers to form a closed inner cavity, and gas is compressed in the inner cavity of the buffer gas chambers in a closed mode. According to the reciprocating compressor, by arranging the buffer air chamber, the problem that the stroke of a piston component is shortened due to condensate water, so that the structure collides and leaks can be avoided, meanwhile, the rebound and buffer damping effects are achieved, and the effect of rapidly discharging the condensate water is achieved by being matched with a condensate water separation system, so that the air quantity adjusting difficulty is simplified.

Description

Technical Field

[0001] The utility model relates to the technical field of reciprocating compressors. Background Art

[0002] A reciprocating compressor is a type of compressor that uses the reciprocating motion of a piston or diaphragm in a cylinder to periodically change the cylinder volume and achieve gas pressurization and transportation. It is a positive displacement compressor and is divided into piston and diaphragm compressors based on the components that perform reciprocating motion.

[0003] Due to the high cost-effectiveness and low investment of reciprocating compressors, synthetic gas compressors, raw gas compressors, and analytical gas compressors are all reciprocating compressors. The gas output regulation design uses DCS as the compressor control end and remote pneumatic valve regulation. Reciprocating compressors may have some steam condensed in the compressed gas. The condensed liquid is incompressible and accumulates in the cylinder over time, shortening the piston stroke and causing equipment damage when the piston moves to the maximum stroke. For this reason, this technology is studied. Utility Model Content

[0004] The purpose of the utility model is to provide a reciprocating compressor to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A reciprocating compressor comprises a compressor control end and a body driving part, gas compression parts are arranged on both sides of the body driving part, a working chamber is arranged inside the gas compression part, a piston component extending into the working chamber is installed on the body driving part, a buffer air chamber is arranged on both sides of the working chamber inside the gas compression part, the piston component moves to the buffer air chamber part to form a closed inner cavity, and the gas is closed and compressed in the inner cavity of the buffer air chamber.

[0007] As a further solution of the utility model: the top and bottom of the gas compression part are respectively provided with an air intake chamber and an exhaust chamber, and an air valve is provided at the connection between the air intake chamber and the exhaust chamber and the working chamber, and the buffer air chamber is arranged on the stroke when the piston component moves outside the air valve intake and exhaust range.

[0008] As a further solution of the utility model: the buffer air chambers on both sides are connected through a series pipeline, and a control valve is arranged on the series pipeline.

[0009] As a further solution of the utility model: a gas-liquid separation tank is installed on the series pipeline, and there are two control valves, which are respectively arranged at one end of the series pipeline close to the two buffer air chambers. The bottom of the gas-liquid separation tank is connected to a drainage pipeline for discharging condensed water, and a valve body is installed on the drainage pipeline.

[0010] As a further solution of the utility model: the connection point between the series pipeline and the buffer air chamber is arranged at the bottom of the buffer air chamber which is conducive to the discharge of condensed water.

[0011] As a further solution of the utility model: the air volume regulating system at the control end of the compressor can control the opening and closing of the control valve.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The reciprocating compressor, by providing a buffer air chamber, can not only avoid the problem of condensed water causing the piston component to shorten its stroke and cause structural collision and leakage, but also has rebound and buffer shock absorption effects. Together with the condensed water separation system, it simplifies the difficulty of gas volume regulation and achieves the effect of quickly discharging condensed water. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of a reciprocating compressor.

[0015] In the figure: 1. Body driving part; 2. Gas compression part; 3. Working chamber; 4. Air intake chamber; 5. Exhaust chamber; 6. Piston component; 7. Air valve; 8. Series pipeline; 9. Control valve; 10. Gas-liquid separation tank; 11. Drainage pipeline; 12. Buffer air chamber. DETAILED DESCRIPTION

[0016] See also Figure 1 In the embodiment of the utility model, the reciprocating compressor includes a compressor control end and a body driving part 1, gas compression parts 2 are arranged on both sides of the body driving part 1, a working chamber 3 is arranged inside the gas compression part 2, the body driving part 1 is installed with a piston component 6 extending into the working chamber 3, and a buffer air chamber 12 is arranged inside the gas compression part 2 on both sides of the working chamber 3. The piston component 6 moves to the buffer air chamber 12 to form a closed inner cavity, and the gas forms a closed compression in the inner cavity of the buffer air chamber 12. If condensed water is generated in the working chamber 3, it will be pushed into the buffer air chamber 12 by the piston component 6. The buffer air chamber 12 is a space outside the stroke of the piston component 6. Therefore, the generation of condensed water will not affect the stroke of the piston component 6, and can effectively avoid leakage problems caused by structural collision. At the same time, when the piston component 6 moves to the buffer air chamber 12, the gas in the buffer air chamber 12 is compressed, and the compressed gas can play an effective buffering role, giving the piston component 6 a reset air pressure, reducing the driving load, and reducing the structural damage caused by the inertia of the piston movement. On the other hand, it also plays a role in shock resistance and shock absorption.

[0017] As a further solution of the utility model: the top and bottom of the gas compression part 2 are respectively provided with an air intake chamber 4 and an exhaust chamber 5, and the connection between the air intake chamber 4 and the exhaust chamber 5 and the working chamber 3 is provided with an air valve 7, and the buffer air chamber 12 is arranged on the stroke when the piston component 6 moves to outside the air intake and exhaust range of the air valve 7. Through the cooperation of the air intake chamber 4 and the exhaust chamber 5 and the air valve 7, the suction and discharge of compressed gas in the cylinder are realized under the action of the reciprocating motion of the piston, and the air volume regulation system controls the opening and closing time of the air valve 7 through the compressor control end to adjust the amount of compressed gas.

[0018] In a preferred embodiment, the buffer air chambers 12 on both sides are connected by a series pipeline 8, and a control valve 9 is provided on the series pipeline 8. Usually, the gas volume is adjusted by extending the opening time of the air valve 7 on the intake side during the compression of the gas. The excess gas is pushed back into the intake chamber 4 through the air valve 7, and then the air valve 7 is closed. The exhaust air valve 7 is opened to push the remaining gas into the exhaust buffer tank. This method has many adjustment parameters, so a series pipeline 8 and a control valve 9 are added. The purpose of gas volume adjustment can be achieved by adjusting the control valve 9. In the regulation stage, it is only necessary to adjust the time parameters of the control valve 9 to accurately control the gas volume.

[0019] In a preferred embodiment, a gas-liquid separation tank 10 is installed on the series pipeline 8. There are two control valves 9, which are respectively arranged at one end of the series pipeline 8 close to two buffer air chambers 12. The bottom of the gas-liquid separation tank 10 is connected to a drainage pipeline 11 for discharging condensed water. A valve body is installed on the drainage pipeline 11. The control valve 9 is close to one side of the buffer air chamber 12, which can reduce the error caused by gas compression and reduce the impact on the buffering, shock absorption and rebound functions. When the control valve 9 is closed, the internal condensed water is discharged by opening the drainage pipeline 11.

[0020] In a preferred embodiment, the connection point between the series pipeline 8 and the buffer gas chamber 12 is set at the bottom of the buffer gas chamber 12 which is conducive to the discharge of condensed water. The series pipeline 8 is connected to the top of the gas-liquid separation tank 10. The gas enters through the top of the series pipeline 8, and the condensed water is separated to the bottom of the gas-liquid separation tank 10 under the action of gravity. The gases circulate with each other to achieve gas-liquid separation and discharge the condensed water inside the working chamber 3.

[0021] In a preferred embodiment, the air volume regulating system at the control end of the compressor can control the opening and closing of the control valve 9. During the process of the air volume regulating system controlling the opening and closing of the control valve 9, the air flow between the two buffer air chambers 12 flows back and forth in the series pipeline 8, and the condensed water is also taken out and separated into the gas-liquid separation tank 10. When the reciprocating compressor is running at full power, the control valve 9 is in a closed state, and intermittent condensed water discharge is required. During the condensed water discharge process, all the air valves 7 are closed, the control valve 9 is opened, and the piston component 6 reciprocates once, and the gas on both sides of the piston component 6 is exchanged. During the exchange process, the condensed water is separated and stored in the gas-liquid separation tank 10, and the condensed water discharge is completed without stopping, and the speed is fast and the efficiency is high.

[0022] It should be noted that the above embodiments all belong to the same utility model concept, and the description of each embodiment has its own focus. For matters that are not described in detail in some embodiments, reference can be made to the description in other embodiments.

[0023] The above-mentioned embodiments only express the implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A reciprocating compressor, comprising a compressor control end and a body drive part (1), a gas compression part (2) being arranged on both sides of the body drive part (1), a working chamber (3) being arranged inside the gas compression part (2), and a piston part (6) extending into the working chamber (3) being installed on the body drive part (1), characterized in that: The gas compression part (2) is provided with a buffer gas chamber (12) located on both sides of the working chamber (3). The piston component (6) moves to the buffer gas chamber (12) to form a closed inner cavity, and the gas is compressed in the inner cavity of the buffer gas chamber (12).

2. The reciprocating compressor according to claim 1, characterized in that: An air intake chamber (4) and an exhaust chamber (5) are respectively arranged at the top and bottom of the gas compression part (2); an air valve (7) is arranged at the connection between the air intake chamber (4) and the exhaust chamber (5) and the working chamber (3); and a buffer air chamber (12) is arranged at a stroke when the piston component (6) moves to outside the air intake and exhaust range of the air valve (7).

3. The reciprocating compressor according to claim 1, characterized in that: The buffer air chambers (12) on both sides are connected via a series pipeline (8), and a control valve (9) is provided on the series pipeline (8).

4. The reciprocating compressor according to claim 3, characterized in that: A gas-liquid separation tank (10) is installed on the series pipeline (8), two control valves (9) are respectively arranged at one end of the series pipeline (8) close to two buffer gas chambers (12), and the bottom of the gas-liquid separation tank (10) is connected to a drainage pipeline (11) for discharging condensed water, and a valve body is installed on the drainage pipeline (11).

5. The reciprocating compressor according to claim 3 or 4, characterized in that: The connection point between the series pipeline (8) and the buffer air chamber (12) is arranged at the bottom of the buffer air chamber (12) to facilitate the discharge of condensed water.

6. The reciprocating compressor according to claim 5, characterized in that: The air volume regulating system at the control end of the compressor can control the opening and closing of the control valve (9).

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