Air compressor exhaust mechanism

Abstract

An air compressor exhaust mechanism comprises a plurality of air compressors and an exhaust manifold, the upstream end of the exhaust manifold is closed, the downstream end of the exhaust manifold is used for providing compressed air for an air storage tank, the upstream section of the exhaust manifold is expanded to form an expansion joint, the downstream end of an exhaust pipe of each air compressor extends upwards, is bent and then is connected to the top of the expansion joint, and a one-way valve is arranged. And a drain valve is arranged at the bottom of the downstream end of the expansion joint. The utility model has the advantages of simple structure and low improvement cost, and can ensure the long-time normal operation of the air compressor.

Description

Technical Field

[0001] This utility model relates to the chemical industry, and in particular to an air compressor exhaust mechanism. Background Technology

[0002] Chemical plants typically have multiple air compressors to provide compressed gas. These compressors are usually designed in parallel, with each compressor's exhaust pipe extending upwards to connect to a main exhaust pipe, which then supplies compressed gas to the storage tank.

[0003] This exhaust structure has the following drawbacks:

[0004] 1. When the purchased air compressor itself has poor condensate removal effect, the compressed gas discharged to the exhaust manifold carries a lot of condensate. This condensate collects in the exhaust manifold. When the air compressor is in standby mode or stopped for maintenance, this condensate flows back into the air compressor, causing water ingress damage to the air compressor.

[0005] 2. The condensate collected in the exhaust manifold is carried to the gas storage tank by the compressed gas, which may enter the gas-using process.

[0006] 3. Due to the parallel design of multiple air compressors, when the air compressors start one after the other, the air compressor that starts first will cause air hammer to the air compressor that starts later.

[0007] Therefore, how to design a reasonably structured exhaust mechanism that can eliminate the above-mentioned defects is a problem that needs to be solved by those skilled in the art. Utility Model Content

[0008] The purpose of this utility model is to address the shortcomings of existing technologies by providing an air compressor exhaust mechanism that has a simple structure, low modification cost, and can ensure the long-term normal operation of the air compressor.

[0009] The technical solution of this utility model is: an air compressor exhaust mechanism, including multiple air compressors and an exhaust manifold. The upstream end of the exhaust manifold is closed, and the downstream end is used to provide compressed gas to the air storage tank. The upstream section of the exhaust manifold is expanded to form an expansion joint. The downstream end of the exhaust pipe of each air compressor extends upward, bends and connects to the top of the expansion joint, and is equipped with a one-way valve. A drain valve is provided at the bottom of the downstream end of the expansion joint.

[0010] A solenoid valve is installed at the downstream end of the drain valve, which is controlled to open by a time relay.

[0011] The top of the expansion joint is provided with multiple L-shaped connecting pipes spaced apart along its length, and the downstream end of the exhaust pipe of each air compressor is connected to the horizontal section of the L-shaped connecting pipe through a flange to form a detachable connection.

[0012] The one-way valve is installed in the vertical section of the L-shaped connecting pipe.

[0013] The above technical solution has the following beneficial effects:

[0014] 1. The air compressor exhaust mechanism includes multiple air compressors and an exhaust manifold. The upstream end of the exhaust manifold is closed, and the downstream end is used to supply compressed gas to the air storage tank. The air compressors are used to replenish compressed gas into the exhaust manifold, and the exhaust manifold is used to replenish compressed gas to the air storage tank for use in gas-consuming processes. The upstream section of the exhaust manifold is enlarged to form an expansion joint, making the inner bore of the exhaust manifold a two-stage stepped bore, with a shoulder between the larger and smaller bore sections. The downstream end of the exhaust pipe of each air compressor extends upward, bends, and connects to the top of the expansion joint. A one-way valve is installed therein, allowing the compressed gas produced by the air compressor to enter the expansion joint normally and be sent to the air storage tank through the exhaust manifold. Condensate carried in the compressed gas collects in the expansion joint, and its flow to the air storage tank is restricted by a shoulder, preventing condensate from being carried by the compressed gas to the gas-using process. Furthermore, the condensate collected in the expansion joint cannot flow back to the air compressor, effectively ensuring the safety of the air compressor and guaranteeing its long-term normal operation. The one-way valve controls the flow direction of the compressed gas, preventing air hammer caused by different starting sequences of multiple air compressors, ensuring the normal operation of each air compressor. A drain valve is installed at the bottom of the downstream end of the expansion joint, allowing the expansion joint to be emptied as needed (timed) to prevent condensate from entering the gas-using process or flowing back to the air compressor.

[0015] 2. A solenoid valve is installed at the downstream end of the drain valve. The solenoid valve is controlled to open by a time relay. The drain valve can be kept open. The solenoid valve is controlled to open periodically to drain water, avoiding the risk of water accumulation caused by negligence in manual drainage, and ensuring the normal operation of the air compressor and the normal air supply of the air tank for a long time.

[0016] 3. Multiple L-shaped connecting pipes are spaced apart along the length of the top of the expansion joint. The downstream end of the exhaust pipe of each air compressor is connected to the horizontal section of the L-shaped connecting pipe through a flange to form a detachable connection, which facilitates the maintenance of the air compressor.

[0017] The following description, in conjunction with the accompanying drawings and specific embodiments, provides further details. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 for Figure 1 A-direction view.

[0020] In the attached diagram, 1 is the air compressor, 2 is the exhaust manifold, 3 is the expansion joint, 4 is the check valve, 5 is the drain valve, 6 is the solenoid valve, 7 is the L-shaped connecting pipe, 71 is the horizontal section, and 72 is the vertical section. Detailed Implementation

[0021] See Figure 1 and Figure 2 This is a specific embodiment of an air compressor exhaust mechanism. The air compressor exhaust mechanism includes multiple air compressors 1 and an exhaust manifold 2. The upstream end of the exhaust manifold 2 is closed, and the downstream end is used to supply compressed gas to the air storage tank. Specifically, there are three air compressors, which are conventional air compressors available on the market. The upstream section of the exhaust manifold 2 is widened to form an expansion joint 3. Typically, the exhaust manifold is constructed by connecting large-diameter pipes and small-diameter pipes. For example, if a DN200 pipe and an ND80 pipe are connected to form a two-stage stepped orifice, then the DN200 pipe forms an expansion joint. The downstream end of the exhaust pipe of each air compressor 1 extends upward, bends, and connects to the top of the expansion joint 3, and is equipped with a one-way valve 4. In this embodiment, three L-shaped connecting pipes 7 are spaced apart along the length of the top of the expansion joint 3. The vertical section of the L-shaped connecting pipe is fixedly connected to the expansion joint and obviously communicates with the inner hole of the expansion joint. The one-way valve 4 is located on the vertical section 72 of the L-shaped connecting pipe. A flange is provided at the horizontal extension end of the L-shaped connecting pipe. A flange is provided at the downstream end of the exhaust pipe of each air compressor 1, forming a detachable connection with the horizontal section 71 of the L-shaped connecting pipe 7 through the flange. A drain valve 5 is provided at the bottom of the downstream end of the expansion joint 3. The drain valve drains water to the ditch through a pipeline. In this embodiment, a solenoid valve 6 is provided at the downstream end of the drain valve 5. The solenoid valve 6 is controlled to open by a time relay.

[0022] The working principle of this utility model is as follows: When the drain valve is in the normally open state, each air compressor is turned on, and the compressed gas generated is sent to the expansion joint and then to the air storage tank for temporary storage through the exhaust manifold, providing compressed gas for the gas-using process. The condensate carried by the compressed gas generated by the air compressor is collected in the expansion joint and temporarily retained there. The solenoid valve is intermittently opened by a time relay, allowing the collected condensate to be discharged from the expansion joint through the drain valve and the solenoid valve, preventing the condensate from flowing back to the air compressor or air storage tank.

Claims

1. An air compressor exhaust mechanism, comprising multiple air compressors (1) and an exhaust manifold (2), wherein the upstream end of the exhaust manifold (2) is closed and the downstream end is used to supply compressed gas to an air storage tank, characterized in that: The upstream section of the exhaust manifold (2) is widened to form an expansion joint (3). The downstream end of the exhaust pipe of each air compressor (1) extends upward, bends, and connects to the top of the expansion joint (3), and is equipped with a one-way valve (4). A drain valve (5) is provided at the bottom of the downstream end of the expansion joint (3).

2. The air compressor exhaust mechanism according to claim 1, characterized in that: A solenoid valve (6) is provided at the downstream end of the drain valve (5), and the solenoid valve (6) is opened by a time relay.

3. The air compressor exhaust mechanism according to claim 1, characterized in that: The top of the expansion joint (3) is provided with multiple L-shaped connecting pipes (7) spaced apart along the length direction. The downstream end of the exhaust pipe of each air compressor (1) is connected to the horizontal section (71) of the L-shaped connecting pipe (7) by a flange to form a detachable connection.

4. The air compressor exhaust mechanism according to claim 3, characterized in that: The one-way valve (4) is installed in the vertical section (72) of the L-shaped connecting pipe (7).

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