Automatic drainage device for gas tank
By combining a PLC control system and a whistle generator, automatic drainage of the gas storage tank is achieved, which solves the safety hazards and energy waste caused by manual operation and improves the stability and safety of equipment operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANGANG STEEL GRP GONGCHANGLING MINING CO SUBSIDIARY COM
- Filing Date
- 2025-05-23
- Publication Date
- 2026-06-12
Smart Images

Figure CN224352771U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of gas tank drainage control technology, and in particular relates to a device for automatic drainage of gas tanks. Background Technology
[0002] Air receiver tanks are primarily used to store compressed air. Since outside air generally contains humidity, a portion of the compressed air is stored in the tank. Air contains a large number of water molecules, and when these high-speed water molecules encounter the inner wall of the tank, they condense into water. Over time, a large amount of water accumulates at the bottom, reducing the tank's volume and causing a drop in output pressure. Excessive moisture in the output compressed air affects production equipment powered by compressed air, such as pneumatic valves. Especially in winter, this can cause ice to form inside some pneumatic valves, leading to valve failure. Therefore, it is crucial to drain the water from the air receiver tank promptly.
[0003] In practice, drainage is always done manually by personnel. Current technology typically involves creating a drain outlet and installing a drain valve at the bottom of the gas storage tank. The valve is then opened periodically by hand to drain the water. During this process, personnel often need to bend over to open and close the valve, which can easily splash water onto their work area and cause injury. Furthermore, to check if the tank is empty, the drain pipe needs to be directly released into the air, generating significant noise and environmental pollution.
[0004] However, the amount of water accumulated in the air tank varies at different times, sometimes only a small amount, sometimes a large amount. Often, due to busy or negligent work, water is not drained in time, affecting the normal operation of subsequent pneumatic equipment. Furthermore, during drainage, water can easily splash onto personnel, causing injury. Some systems use solenoid valves for remote control of the air tank, but this only provides remote start / stop functionality and cannot automatically start or stop drainage based on water level and actual drainage conditions. This often results in water remaining inside even though the solenoid valve is closed, or the water has been completely drained, but a large amount of compressed air is discharged, resulting in energy waste. Utility Model Content
[0005] This utility model patent provides a
[0006] The device can automatically drain the gas storage tank, and can automatically drain the gas at set times.
[0007] To achieve the above objectives, the present invention adopts the following technical solution:
[0008] An automatic drainage device for a gas storage tank includes a gas storage tank body, a drainage device, and a PLC control system. The gas storage tank body has a drainage hole at its bottom. The drainage device includes a drainage pipe solenoid valve, a pilot pipe, a whistle generator, and a noise transmitter. The drainage pipe is connected to the gas storage tank body through the drainage hole. The solenoid valve is mounted on the drainage pipe. The pilot pipe consists of a longitudinal pipe and a transverse pipe connected to the longitudinal pipe. The drainage pipe is located to the right of the solenoid valve, and the end of the longitudinal pipe is connected to the drainage pipe. The whistle generator is detachably threaded to the end of the transverse pipe. A noise transmitter is connected to the longitudinal pipe using a connecting bracket. Both the noise transmitter and the solenoid valve are electrically connected to the PLC control system.
[0009] As a further description of the above technical solution: the diameter of the drain pipe is 50mm, and the diameter of the pilot pipe is 10mm.
[0010] This utility model has the following beneficial effects:
[0011] Compared with the prior art, the automatic drainage device for air tanks provided by this utility model connects the drainage component to the air tank. A whistle generator and a noise transmitter are installed on the pilot tube. After the water is drained, compressed air passes through the whistle generator to emit a whistle. The installed noise transmitter contains a sound sensor. The PLC controller receives the data from the noise transmitter, and after A / D conversion, it feeds the information back to the PLC remote controller. The PLC remotely controls the solenoid valve to open automatically, realizing the automatic drainage function. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of this utility model.
[0013] Figure 2 This is an enlarged view of the whistle generator. Detailed Implementation
[0014] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the disclosure of the utility model more thorough and comprehensive.
[0015] Please refer to Figure 1 and Figure 2As shown, this utility model discloses an automatic drainage device for a gas storage tank, comprising a gas storage tank body 1, a drainage assembly, and a PLC remote controller. The gas storage tank body 1 has a drainage hole at its bottom. The drainage assembly includes a drainage pipe 2, a solenoid valve 3, a pilot pipe 4, a whistle generator 6, and a noise transmitter 7. The drainage pipe 2 is connected to the gas storage tank body 1 through the drainage hole. The solenoid valve 3 is mounted on the drainage pipe 2. The pilot pipe 4 consists of a longitudinal pipe and a transverse pipe connected to the longitudinal pipe, and is mounted on the drainage pipe 2 to the right of the solenoid valve 3, with the end of the longitudinal pipe connected to the drainage pipe 2. The whistle generator 6 is detachably threaded to the end of the transverse pipe. The noise transmitter 7 is connected to the longitudinal pipe via a connecting bracket 5. Both the noise transmitter 7 and the solenoid valve 3 are electrically connected to the PLC remote controller.
[0016] Specifically, the diameter of the drain pipe is 50mm, and the diameter of the pilot pipe 4 is 10mm. The smaller diameter of the pilot pipe 4 allows compressed air entering the pilot pipe 4 through the drain pipe to generate pressure. After the water is drained, the compressed air passes through the whistle generator 6 and emits a whistle. The installed noise transmitter contains a sound sensor, and the PLC controller receives the data from the noise transmitter. After A / D conversion, the data is fed back to the PLC remote controller, which remotely controls the solenoid valve to automatically open, thus achieving automatic drainage. The PLC remote controller used in this invention is existing technology and will not be described in detail here.
[0017] With PLC automatic control, centralized control of multiple gas storage tanks can be achieved. The drain pipes of multiple gas storage tanks are connected to a thick centralized water pipe, which transmits water to the sewage well, thus avoiding environmental pollution and noise generation.
[0018] This invention reduces the workload of operators, improves their work efficiency, avoids potential hazards caused by work errors, ensures the reliability of pneumatic equipment, and protects the surrounding environment.
Claims
1. An automatic drainage device for a gas storage tank, comprising a gas storage tank body, a drainage device, and a PLC control system, wherein the bottom of the gas storage tank body is provided with a drainage hole, characterized in that: The drainage device includes a drainage pipe solenoid valve, a pilot pipe, a whistle generator, and a noise transmitter. The drainage pipe is connected to the gas storage tank body through a drainage hole. The solenoid valve is installed on the drainage pipe. The pilot pipe consists of a longitudinal pipe and a transverse pipe connected to the longitudinal pipe. The pilot pipe is located on the right side of the solenoid valve, and the end of the longitudinal pipe is connected to the drainage pipe. The whistle generator is detachably threaded to the end of the transverse pipe. The noise transmitter is connected to the longitudinal pipe by a connecting bracket. Both the noise transmitter and the solenoid valve are electrically connected to the PLC control system.
2. The device for automatically draining a gas storage tank according to claim 1, characterized in that: The diameter of the drain pipe is 50mm, and the diameter of the pilot pipe is 10mm.