CN201007425Y

CN201007425Y - Air supply pressure self-recognizing compressed natural filling machine

Info

Publication number: CN201007425Y
Application number: CNU2006201394482U
Authority: CN
Inventors: 王涌涛; 金凤奇
Original assignee: ZHENGZHOU CLEAN PETROLEUM EQUIPMENT CO Ltd
Current assignee: Greka (ZZ) Petroleum Equipment Co., Ltd.
Priority date: 2006-12-30
Filing date: 2006-12-30
Publication date: 2008-01-16
Anticipated expiration: 2016-12-30

Abstract

The utility model discloses an air source pressure automatic recognition compressed natural gas aerating machine comprising a plurality of gas bottles, a plurality of pressure transmitters, a plurality of cut-off valves, a pressure diagnosing and controlling block and a computer control system, wherein the gas bottles are communicated with respective input ends of cut-off valves via gas pipelines, the output ends of cut-off valves are gathered into the same aerating pipe, the pressure transmitters are equipped on the gas pipelines, the pressure diagnosing and controlling block is connected with the pressure transmitters and the cut-off valves via line conductors, and the computer control system is connected with the pressure diagnosing and controlling block. When starting, the aerating machine automatically recognizes the pressure values of the gas bottles, outputs pressure signals through pressure transmitters, outputs valve switching signals through the computer control system, outputs valve switch signals through the pressure diagnosing and controlling block, and when the pressure of any gas bottle is lower than seven million Pascal, the connection with the aerating machine is interrupted and is replaced by a spare gas bottle. Compared with the traditional compressor, the compressed natural gas (CNG) aerating machine has the advantages of low investment and fast response, thereby having very extensive market outlook.

Description

Bleed pressure self-identifying compressed natural gas filling machine

Technical field

The utility model relates to a kind of filling machine to gas equipment input rock gas, a kind of more precisely bleed pressure self-identifying compressed natural gas filling machine.

Background technique

Growth along with fuel price, rock gas (CNG) is widely adopted with the advantage of its energy-saving and environmental protection, but conventional CNG gas station technological process mostly as shown in Figure 1, low pressure, middle pressure, high-pressure gas are irritated by the compressor pressurising, its pressure rating is fixed, therefore the aerating sequence control mode of getting the CNG filling machine of gas is also fixed,---middle pressure---high pressure that is low pressure, can't satisfy the requirement of compressor-free CNG air entraining substation, in addition, adopt the air entraining substation investment higher (500～6,000,000 yuan) of this mode, be not easy to apply rapidly.

The model utility content

At the deficiency that prior art exists, the purpose of this utility model is to provide a kind of bleed pressure self-identifying compressed natural gas filling machine.

For achieving the above object, the technical solution adopted in the utility model is:

A kind of bleed pressure self-identifying compressed natural gas filling machine, comprise some air cylinders, pressure transmitter, cut-off valve, pressure judgement control module and computerized control system, described air cylinder all is connected with separately cut-off valve input end by gas pipeline, the cut-off valve output terminal comes together in same aerating pipeline, pressure transmitter is set on the gas pipeline, pressure judges that control module is connected with cut-off valve with each pressure transmitter by lead, and computerized control system judges that with pressure control module is connected.

Described air cylinder is four, and one of them is standby air cylinder.

Four air cylinders of the present utility model are after refueling mother station is full of gas, arrive air entraining substation with the truck roping, after filling machine starts, can judge air cylinder pressure height automatically, by pressure transmitter delivery pressure signal, computerized control system output valve switching signal, pressure is judged control module output valve switching signal, filling machine is got gas from air cylinder and is given the gas equipment aerating, obviously its air cylinder pressure rank is often to change, after a certain air cylinder pressure is lower than 7MPa, promptly disconnect itself and being connected of filling machine, replace with standby air cylinder, compare with traditional compressor CNG filling machine have simple in structure, easy to operate, invest low, advantages such as instant effect have very vast market prospect.

Description of drawings

Fig. 1 is the structural representation of traditional compressor CNG filling machine;

Fig. 2 is a structural representation of the present utility model;

Fig. 3 is a structured flowchart of the present utility model.

Embodiment

Below in conjunction with accompanying drawing the utility model is described in further detail.

As Fig. 2, shown in Figure 3, this bleed pressure self-identifying compressed natural gas filling machine is mainly by four air cylinders, pressure transmitter, cut-off valve, pressure is judged control module and computerized control system composition, there is one to be standby air cylinder in the air cylinder, its excess-three all is connected with separately cut-off valve input end by gas pipeline, the cut-off valve output terminal comes together in same aerating pipeline, pressure transmitter is set on the gas pipeline, pressure judges that control module is connected with cut-off valve with each pressure transmitter by lead, computerized control system judges that with pressure control module is connected, pressure is judged control module, the structure of computerized control system, mounting point and connection and control mode all can adopt prior art to realize, and adopt existing software engineering coding to control automatically, just repeat no more here.

Its working principle is: after filling machine starts, can judge air cylinder pressure height automatically, and at first open in the filling machine and the corresponding cut-off valve of the minimum air cylinder of pressure, give the gas equipment aerating with the low pressure air cylinder, when adding throughput less than setting value, open the cut-off valve of pressure air cylinder correspondence placed in the middle, close the low pressure cut-off valve, when adding throughput less than second setting value, open the cut-off valve of the highest air cylinder correspondence of pressure, press cut-off valve in closing, when adding throughput less than the 3rd setting value, close high-pressure shut-off, finish aerating.

The utility model is not limited to above-mentioned preferred forms; anyone can draw other various forms of products under enlightenment of the present invention; no matter but on its shape or structure, do any variation; every have identical with a utility model or akin technological scheme, all within its protection domain.

Claims

1. bleed pressure self-identifying compressed natural gas filling machine, it is characterized in that, comprise some air cylinders, pressure side's transmitter, cut-off valve, pressure judgement control module and computerized control system, described air cylinder all is connected with separately cut-off valve input end by gas pipeline, the cut-off valve output terminal comes together in same aerating pipeline, pressure transmitter is set on the gas pipeline, pressure judges that control module is connected with cut-off valve with each pressure transmitter by lead, and computerized control system judges that with pressure control module is connected.

2. bleed pressure self-identifying compressed natural gas filling machine according to claim 1 is characterized in that described air cylinder is four, and one of them is standby air cylinder.