CN202203666U

CN202203666U - Hydraulic control system for natural gas pressurizing device

Info

Publication number: CN202203666U
Application number: CN201120327602XU
Authority: CN
Inventors: 陈霁; 吴学雄; 彭秋平; 李建华; 袁中英; 冯冰
Original assignee: WUHAN WINMIND TECHNOLOGY DEVELOPMENT Co Ltd
Current assignee: Wuhan Winmind Technology Co., Ltd.
Priority date: 2011-08-28
Filing date: 2011-08-28
Publication date: 2012-04-25
Anticipated expiration: 2021-08-28

Abstract

The utility model provides a hydraulic control system for a natural gas pressurizing device which can work reliably and safely. The system comprises a motor, a large oil pump, a small oil pump and a first reversing valve, wherein the large oil pump and the small oil pump are connected with the motor; the first reversing valve is respectively connected with the large oil pump and the small oil pump through a large one-way valve and a small one-way valve; the large oil pump and the small oil pump are respectively connected with a large overflow valve and a small overflow valve; and the large overflow and the small overflow are connected with an electromagnetic valve and a second reserving valve. In the hydraulic control system for the natural gas pressurizing device, a hydraulic or air pressure automatic reversing control mode is adopted by the two reversing valves, the two overflow valves, the electromagnetic valve and a self-control valve, so that the hydraulic control system can be safely and reliably used in the environments with inflammable and explosive objects.

Description

The hydraulic control system of rock gas pressurization device

Technical field

The utility model relates to a kind of hydraulic control system, especially a kind of hydraulic control system of rock gas pressurization device.

Background technique

The control system of rock gas pressurization device is transmission (distribution) control system of compressed natural gas and rock gas, and existing control system not exclusively is a hydraulic control system, because rock gas is an inflammable gas, therefore can not guarantee reliable operation, safety.

The model utility content

The utility model provides the hydraulic control system of the rock gas pressurization device of a kind of reliable operation, safety.

Realize the hydraulic control system of the rock gas pressurization device of the utility model purpose, comprise motor, big oil pump that links to each other with said motor and little oil pump, the selector valve one that links to each other with said large and small oil pump through large and small one-way valve respectively; Said large and small oil pump is connected with large and small relief valve respectively; Said large and small relief valve is connected with solenoid valve and selector valve two.

The hydraulic control system of described rock gas pressurization device also comprises two internally piloted valves, and said two internally piloted valves link to each other with selector valve two with said selector valve one respectively.

The beneficial effect of the utility model is following:

1, two used selector valves of the hydraulic control system of the rock gas pressurization device of the utility model; Two relief valves and solenoid valve, internally piloted valve all adopt hydraulic pressure or air pressure automatic reverse control mode, and be safe and reliable when guaranteeing in the environment of flammable explosive gas is arranged, to use.

2, the switching-over of selector valve is to be controlled by internally piloted valve, and compressor turn around time and frequency of okperation are more reasonable like this, thereby has improved gas production.

3, according to the force value size of pressurized gas, control the loading and the unloading of large and small oil pump by relief valve, thereby avoided oil pump to flog a dead horse, the heating of minimizing system reduces energy consumption.

Description of drawings

Fig. 1 is the structural representation of the hydraulic control system of the utility model rock gas pressurization device.

Embodiment

The embodiment of the utility model is following:

As shown in Figure 1; The hydraulic control system of the rock gas pressurization device of the utility model; Comprise motor 1, the big oil pump 2 and the little oil pump 3 that link to each other with said motor 1, the selector valve 1 that links to each other with little oil pump 3 through big one-way valve 4 and little one-way valve 8 and said big oil pump 2 respectively; Said big oil pump 2 is connected with big relief valve 5 and little relief valve 7 respectively with little oil pump 3; Said big relief valve 5 is connected with solenoid valve 12 and selector valve 2 15 with little relief valve 7.

Comprise that also internally piloted valve 1 and 2 17, two internally piloted valves of internally piloted valve link to each other with selector valve 2 15 with said selector valve 1 respectively.

The working principle of the hydraulic control system of the utility model rock gas pressurization device is following:

The Oil pump electrical machinery No Load Start:

-motor 1 closes a floodgate and starts, and system is in the off-load passive state in solenoid valve 12 energisings--big relief valve 5, little relief valve 7 are in unloading condition--.

System loads work:

Solenoid valve 12 outages, big relief valve 5, little relief valve 7 shutdown system bands are pressed, and system's hydraulic oil leads to selector valve 1 through big one-way valve 4, little one-way valve 8 respectively through big oil pump 2 and little oil pump 3 pressurizations; System's control oil passes through selector valve 2 15 again through big relief valve 5, little relief valve 7, flows to the control oil pocket of internally piloted valve 1 and internally piloted valve 2 17 and hydraulic control valve respectively; When being in position shown in Figure 1, control oil gets into selector valve one 14 left chambeies, and hydraulic control valve is in the left end state; Pressurized cylinder piston moves down, and cavity of resorption place compressive state rises along with gas is compressed pressure; When the pressure rising reached rated pressure, internally piloted valve 16 was opened, and control oil enters into the left chamber of selector valve 2 15; This valve is switched to left end state (promptly * state), and control this moment oil enters into the right control chamber of selector valve 1, selector valve one 14 switching-overs (being in // state); System pressure oil flows into the oil cylinder epicoele through selector valve 1, makes increase cylinder epicoele be in compressive state, so back and forth forms automatic reciprocating state of a control.

In addition, pressure, temperature and the liquid level of native system under various working staties is equipped with the sensor acquisition signal, and monitors and control through computer.

Embodiment recited above describes the preferred implementation of the utility model; Be not that scope to the utility model limits; Design under the spiritual prerequisite not breaking away from the utility model; Various distortion and improvement that the common engineers and technicians in related domain make the utility model technological scheme all should fall in the protection domain that claims of the utility model confirm.

Claims

1. the hydraulic control system of a rock gas pressurization device is characterized in that: comprise motor, big oil pump that links to each other with said motor and little oil pump, the selector valve one that links to each other with said large and small oil pump through large and small one-way valve respectively; Said large and small oil pump is connected with large and small relief valve respectively; Said large and small relief valve is connected with solenoid valve and selector valve two.

2. the hydraulic control system of rock gas pressurization device according to claim 1 is characterized in that: also comprise two internally piloted valves, said two internally piloted valves link to each other with selector valve two with said selector valve one respectively.