Gas
Transmission and Supply Technologies
Pipeline Business Unit
Objective
The conventional way of lowering the pressure in a medium-pressure holder, in cases where it is not practicable to simply allow the pressure to be reduced through gas consumption in the service district, is to burn the gas. In order to avoid burning gas to reduce pressure in the holder, we have developed a compressor-mounted vehicle called "ECOPURGE".
Features
- The vehicle size and weight are such that an operator can drive the vehicle even with no specialized training or qualification such as a license to drive heavy-duty vehicles.
- High-capacity processing (1000 Nm3/h on average)
- Low noise design (72 dB at a location 7 m away on the equipment side)
- Incorporation of an interactive operation panel (Operating procedures and conditions displayed by LCD)
Principle of pressure reduction
ECOPURGE draws gas from the target of pressure reduction (spherical holder), compresses it in a compressor, and discharges it into an adjacent medium-pressure pipeline to achieve pressure reduction. For this purpose, a gas engine-powered compressor package is mounted on the vehicle.
Specifications
| Application | Pressure reduction and pressure increase (gas fillng) for medium-pressure holders |
|---|---|
| Compressor specifications | |
| Drive system | Gas engine |
| Processing capacity (flow rate)*1 | 1000Nm3/h on average |
| Noise level | 72dB(at a location 7m away on the equipment side; low-noise construction machinery (compressor)*2)level |
| Suction pressure | 0.7MPa～1kPa |
| Discharge pressure | 0.7MPa max |
| Primary safety device | Emergency stop in response to the actuation of a gas leakage detector, abnormal high ressure, abnormal low pressure, etc. |
| Vehicle specifications | |
| Vehicle size | Semi-long vehicle (5.3m overall length '2.15m overall width ' 3,2m overall height) |
| Gross weight | 7880Kg |
*1)Average flow rate in reducing from 0.65 MPa to 2.3 kPa
Processing capacity (Nm3/h) = Total amount of
gas processed (Nm3) = Time required (h)
*2)The standards for low-noise machinery set forth by the Ministry of Land, Infrastructure and Transport.
Introduction
Eco-Purge was introduced in June 2004.
Distributor
Osaka Gas Engineering Co., Ltd.
