CN-224228969-U - Boost cylinder type hydraulic system of energy-saving pumping unit

Abstract

The utility model relates to the technical field of hydraulic pumping units, in particular to a booster cylinder type hydraulic system of an energy-saving pumping unit, which comprises an oil tank, a large energy accumulator, a fan and a servo booster cylinder, wherein the surface of the oil tank is respectively communicated with a liquid supplementing electric pump through a pipeline, the surface of the liquid supplementing electric pump is fixedly connected with a liquid supplementing motor, the surface of a main electric pump is provided with a throat hole, the throat hole is communicated with a fifth ball valve through a pipeline, and the fifth ball valve is communicated with the oil tank through a pipeline. The utility model utilizes the servo booster cylinder to reduce energy consumption, the servo booster cylinder compresses hydraulic oil to compress the hydraulic oil into the hydraulic oil cylinder through controlling the servo booster cylinder, meanwhile, the left and right hydraulic oil cylinders can assist the other hydraulic oil cylinder to rise under the condition of dead weight, the secondary process can save more than 30% of energy consumption, and the stroke frequency of the hydraulic cylinder of the pumping unit is controlled by controlling the rotating speed through utilizing the high controllable performance of the servo motor.

Inventors

• LIU YIMING
• Qu Dezhao
• LI JIAN

Assignees

• 西安道特斯油气工程服务有限公司

Dates

Publication Date

20260512

Application Date

20250717

Claims (6)

1. 1. The booster cylinder type hydraulic system of the energy-saving pumping unit comprises an oil tank (1), a large energy accumulator (31), a fan (8) and a servo booster cylinder (40), and is characterized in that the surface of the oil tank (1) is respectively communicated with a liquid supplementing electric pump (12) through a pipeline, the surface of the liquid supplementing electric pump (12) is fixedly connected with a liquid supplementing motor (11), the surface of a main electric pump (16) is provided with a throat hole (34), the throat hole (34) is communicated with a fifth ball valve (35) through a pipeline, the fifth ball valve (35) is communicated with the oil tank (1) through a pipeline, the surface of the main electric pump (16) is fixedly connected with a main motor (15), the liquid supplementing electric pump (12) and the main electric pump (16) are both communicated with a third plate type overflow valve (38) through pipelines, the liquid supplementing electric pump (12) and the main electric pump (16) are both communicated with a first one-way valve (19) through pipelines, the first one-way valve (19) is communicated with a pipeline, the third ball valve (30) is communicated with the oil tank (1) through a pipeline, the filter element (10) is arranged on the inner side of the filter element (9), the surface of oil tank (1) runs through and installs electron thermometer (5), the surface of big energy storage ware (31) has fourth ball valve (32) through the pipeline intercommunication, fourth ball valve (32) have first plate overflow valve (33) through the pipeline intercommunication, first plate overflow valve (33) have second plate overflow valve (36) through the pipeline intercommunication, second plate overflow valve (36) have second ball valve (25) through the pipeline intercommunication, filter core (10) have first ball valve (7) through the pipeline intercommunication, first ball valve (7) have electromagnetic overflow valve (23) through the pipeline intercommunication, the surface mounting of main electric pump (16) has second monitoring valve (18), second ball valve (25) have hydraulic cylinder through the pipeline intercommunication.
2. 2. The booster cylinder type hydraulic system of the energy-saving pumping unit according to claim 1 is characterized in that a thermometer (6) is installed on the surface of the oil tank (1) in a penetrating mode, and an oil discharge valve (2) is communicated with the surface of the oil tank (1).
3. 3. The booster cylinder type hydraulic system of the energy-saving pumping unit according to claim 1 is characterized in that an oil level window (4) is inlaid on the surface of the oil tank (1), and an oil tank cover (3) is sleeved on the top thread of the oil tank (1).
4. 4. The booster cylinder type hydraulic system of the energy-saving pumping unit according to claim 1, wherein the first one-way valve (19) is communicated with a hose connector (22) through a pipeline, and the hose connector (22) is communicated with a pressure gauge (21) through a pipeline.
5. 5. The booster cylinder type hydraulic system of the energy-saving pumping unit according to claim 1, wherein a pressure sensor (24) is arranged on a pipeline communicated with the first one-way valve (19), the servo booster cylinder (40) is communicated with a proportional valve (27) through a pipeline, and the proportional valve (27) is communicated with an electromagnetic reversing valve (26) through a pipeline.
6. 6. The booster cylinder type hydraulic system of the energy-saving pumping unit according to claim 5, wherein the proportional valve (27) is communicated with a threaded overflow valve (28) through a pipeline, the threaded overflow valve (28) is communicated with an energy accumulator oil path block (37) through a pipeline, the second ball valve (25) is communicated with an oil supplementing oil path block (41) through a pipeline, an electric control cabinet (39) is arranged on the surface of the oil tank (1), the liquid supplementing electric pump (12) is respectively connected with a first liquid inlet pipe (13) and a first monitoring valve (14), the surface of the main electric pump (16) is connected with a second liquid inlet pipe (17), and the threaded overflow valve (28) is communicated with a second one-way valve (20) through a pipeline.

Description

Boost cylinder type hydraulic system of energy-saving pumping unit Technical Field The utility model relates to the technical field of hydraulic pumping units, in particular to a booster cylinder type hydraulic system of an energy-saving pumping unit. Background The hydraulic pumping unit is non-beam oil extraction equipment realizing reciprocating motion through a hydraulic system, is mainly used for replacing the traditional beam pumping unit to meet the deep oil reservoir exploitation requirement, and has a core structure comprising a hydraulic cylinder, a lifting pulley block and a composite lifting rope system, and realizes load balance through the composite stress design of a load-sharing lifting rope and a main lifting rope. At present, the traditional beam pumping unit or hydraulic pumping unit is generally adopted for exploiting petroleum in various countries, the traditional beam pumping unit has poor energy saving effect, low transmission efficiency and cannot better realize energy saving, the traditional beam pumping unit is inconvenient to transport, install, maintain and adjust parameters due to large volume and large weight, the hydraulic pumping unit has high integral input cost, the hydraulic pumping unit directly acts on a hydraulic oil cylinder to lift, has low kinetic energy recovery efficiency and generates a large amount of heat, the traditional equipment has slow stroke and cannot adjust the stroke, the motor consumes high electric energy, the traditional pumping unit cannot save energy, only one-to-one oil extraction is realized, and the intellectualization is relatively low. In order to solve the above technical problems, it is necessary to design a booster cylinder type hydraulic system of an energy-saving pumping unit to solve the above problems. Disclosure of utility model The utility model aims to provide a booster cylinder type hydraulic system of an energy-saving pumping unit, which has the advantages of high transmission efficiency, reduced energy consumption, remote regulation and control and reduced motor power of an integral pump station, and solves the problems that the traditional beam pumping unit has poor energy-saving effect, low transmission efficiency, cannot better realize energy saving, inconvenient parameter adjustment, high power consumption and lower intelligentization. The hydraulic system comprises an oil tank, a large accumulator, a fan and a servo pressurizing cylinder, wherein the surface of the oil tank is communicated with a liquid supplementing electric pump through pipelines respectively, the surface of the liquid supplementing electric pump is fixedly connected with a liquid supplementing motor, the surface of the main electric pump is provided with a throat hole, the throat hole is communicated with a fifth ball valve through a pipeline, the fifth ball valve is communicated with the oil tank through a pipeline, the surface of the main electric pump is fixedly connected with the main motor, the liquid supplementing electric pump and the main electric pump are communicated with a third plate type overflow valve, the third plate type overflow valve is communicated with the oil tank through a pipeline, the liquid supplementing electric pump and the main electric pump are communicated with a first one-way valve through pipelines, the first one-way valve is communicated with a third ball valve through pipelines, the surface of the oil tank is provided with a filter element, the surface of the oil tank is internally provided with an electronic thermometer, the surface of the oil tank is penetrated with an electronic thermometer, the large accumulator is communicated with the oil tank through a pipeline, the surface of the large accumulator is communicated with the third plate type overflow valve, the third plate type overflow valve is communicated with the oil tank through a second one-way valve through a pipeline, the first one-way valve is communicated with the second ball valve through a pipeline, the first one-way valve is communicated with the second overflow valve through a second plate type overflow valve, the first ball valve is communicated with the second one-way valve through a pipeline, and the second ball valve is communicated with the second overflow valve through a second pipeline. Preferably, the surface of the oil tank is provided with a thermometer in a penetrating way, and the surface of the oil tank is communicated with an oil discharging valve. Preferably, the surface of the oil tank is embedded with an oil level window, and the top thread bush of the oil tank is provided with an oil tank cover. Preferably, the first one-way valve is communicated with a hose connector through a pipeline, and the hose connector is communicated with a pressure gauge through a pipeline. Preferably, a pressure sensor is arranged on a pipeline communicated with the first one-way valve, the servo pressurizing cylinder is communicated with a proportional valve