阅读说明：本技术 一种压裂管汇橇快速连接装置液压助力系统 (Hydraulic power assisting system of quick connecting device of fracturing manifold sledge ) 是由 李友兴 曾乔 张川 樊春明 林勇 李中华 刘鸣 杨超 唐秋林 崔佳凯 于 2019-11-29 设计创作，主要内容包括：本发明涉及石油钻采装备技术领域,具体是一种压裂管汇橇快速连接装置液压助力系统,用于解决现有技术中液压助力系统结构较为复杂、占用场地大,成本较高的问题。本发明包括液压油缸和管汇活动臂,所述管汇活动臂上连接有管汇活动弯头,还包括供油单元,所述供油单元连接有单向阀,所述单向阀连接有比例卸荷阀,所述比例卸荷阀和单向阀均与液压油缸的有杆腔连接,所述液压油缸的无杆腔通过空气过滤器与大气连通,所述比例卸荷阀还与供油单元连接。本发明中液压油缸的无杆腔通过空气过滤器与大气连通,在未减少现有技术中技术效果的情况下,减少了现有技术中气路部分,从而该助力系统的结构更简单、占用场地更小、成本更低。(The invention relates to the technical field of oil drilling equipment, in particular to a hydraulic power-assisted system of a fracturing manifold sledge quick connecting device, which is used for solving the problems of complex structure, large occupied area and high cost of the hydraulic power-assisted system in the prior art. The invention comprises a hydraulic oil cylinder and a manifold movable arm, wherein the manifold movable arm is connected with a manifold movable elbow, the manifold movable arm also comprises an oil supply unit, the oil supply unit is connected with a one-way valve, the one-way valve is connected with a proportional unloading valve, the proportional unloading valve and the one-way valve are both connected with a rod cavity of the hydraulic oil cylinder, a rodless cavity of the hydraulic oil cylinder is communicated with the atmosphere through an air filter, and the proportional unloading valve is also connected with the oil supply unit. According to the invention, the rodless cavity of the hydraulic oil cylinder is communicated with the atmosphere through the air filter, and the gas path part in the prior art is reduced under the condition that the technical effect in the prior art is not reduced, so that the boosting system has the advantages of simpler structure, smaller occupied space and lower cost.)

1. The utility model provides a fracturing manifold sledge quick connect device hydraulic pressure helping hand system, includes hydraulic cylinder (7), manifold digging arm (9) and mount pad (11), the one end of hydraulic cylinder (7) articulates on manifold digging arm (9), and the other end articulates on mount pad (11), be connected with manifold activity elbow (10), its characterized in that on manifold digging arm (9): the oil supply device is characterized by further comprising an oil supply unit, the oil supply unit is connected with a one-way valve (5), the one-way valve (5) is connected with a proportional unloading valve (6), the proportional unloading valve (6) and the one-way valve (5) are both connected with a rod cavity of the hydraulic oil cylinder (7), a rodless cavity of the hydraulic oil cylinder (7) is communicated with the atmosphere through an air filter (8), and the proportional unloading valve (6) is further connected with the oil supply unit.

2. The hydraulic power assisting system of the fracturing manifold skid quick-connection device of claim 1, wherein: the oil supply unit comprises a hydraulic oil tank (1), the hydraulic oil tank (1) is connected with a hydraulic oil pump (2) and an overflow valve (3) respectively, the hydraulic oil pump (2) and the overflow valve (3) are both connected with a one-way valve (5), and a proportional unloading valve (6) is connected with the hydraulic oil tank (1).

3. The hydraulic power assisting system of the fracturing manifold skid quick-connecting device as claimed in claim 2, wherein: the hydraulic oil pump (2), the overflow valve (3) and the one-way valve (5) are connected with a same stop valve (4).

4. The hydraulic power assisting system of the fracturing manifold skid quick-connection device of claim 1, wherein: the manifold movable elbows (10) are multiple in number, and the manifold movable elbows (10) are all arranged on the manifold movable arm (9).

Technical Field

The invention relates to the technical field of petroleum drilling and production equipment, in particular to a hydraulic power assisting system of a fracturing manifold sledge quick connecting device.

Background

During fracturing operation, fracturing fluid pumped by a fracturing truck needs to be injected into a ground fracturing manifold through a connecting manifold, a fracturing manifold sledge is quickly connected with corresponding devices to increase the connection efficiency, and the connecting devices need corresponding power-assisted systems.

Disclosure of Invention

Based on the problems, the invention provides a hydraulic power assisting system of a quick connecting device of a fracturing manifold sledge, which is used for solving the problems of complex structure, large occupied area and high cost of the hydraulic power assisting system in the prior art. According to the invention, the rodless cavity of the hydraulic oil cylinder is communicated with the atmosphere through the air filter, and the gas path part in the prior art is reduced under the condition that the technical effect in the prior art is not reduced, so that the boosting system has the advantages of simpler structure, smaller occupied space and lower cost.

The invention specifically adopts the following technical scheme for realizing the purpose:

the hydraulic power-assisted system comprises a hydraulic oil cylinder, a manifold movable arm and a mounting seat, wherein one end of the hydraulic oil cylinder is hinged to the manifold movable arm, the other end of the hydraulic oil cylinder is hinged to the mounting seat, the manifold movable arm is connected with a manifold movable elbow, the hydraulic power-assisted system further comprises an oil supply unit, the oil supply unit is connected with a one-way valve, the one-way valve is connected with a proportional unloading valve, the proportional unloading valve and the one-way valve are both connected with a rod cavity of the hydraulic oil cylinder, a rodless cavity of the hydraulic oil cylinder is communicated with the atmosphere through an air filter, and the proportional unloading valve is further connected with the oil supply unit.

The working principle is as follows: the two ends of the hydraulic cylinder are both hinge structures, and the hydraulic cylinder is connected with and supports the manifold movable arm and enables the manifold movable arm to swing around the manifold movable elbow in a certain range so as to adapt to manifold interfaces with different heights, the manifold movable arm drives a piston rod of the hydraulic cylinder to extend out in the downward swinging process, extruded hydraulic oil cannot pass through a one-way valve and can only return to an oil supply unit through a proportional unloading valve, and the unloading pressure of the proportional unloading valve is adjusted to ensure that the manifold movable arm keeps a hovering state so as to facilitate the connection of a manifold; when the movable arm of the manifold is lifted upwards, hydraulic oil of the oil supply unit is supplemented into a rod cavity of the hydraulic oil cylinder through the check valve to drive a piston rod of the hydraulic oil cylinder to retract, so that the lifting process is labor-saving, and gas discharged from a rodless cavity of the hydraulic oil cylinder enters atmosphere through the air filter.

Through above-mentioned technical scheme, the quick connecting device who adopts hydraulic pressure helping hand system to constitute possess a plurality of degrees of freedom, and working radius is big to be furnished with hydraulic system, balanced manifold weight can realize alone easily accomplishing spatial position's multi freedom rotatory, tensile, thereby with fracturing unit truck exhaust manifold high-speed joint. Meanwhile, compared with the prior art, the system reduces the air passage part in the prior art, so that the boosting system is simpler in structure, smaller in occupied space and lower in cost.

As a preferable mode, the oil supply unit includes a hydraulic oil tank, the hydraulic oil tank is connected with a hydraulic oil pump and an overflow valve respectively, the hydraulic oil pump and the overflow valve are both connected with the check valve, and the proportional unloading valve is connected with the hydraulic oil tank.

As a preferable mode, the same stop valve is connected among the hydraulic oil pump, the overflow valve and the check valve.

As a preferable mode, the manifold movable elbow is provided in a plurality, and the manifold movable elbows are all mounted on the manifold movable arm.

The invention has the following beneficial effects:

(1) according to the invention, the rodless cavity of the hydraulic oil cylinder is communicated with the atmosphere through the air filter, and the gas path part in the prior art is reduced under the condition that the technical effect in the prior art is not reduced, so that the boosting system has the advantages of simpler structure, smaller occupied space and lower cost.

(2) The oil supply unit comprises a hydraulic oil tank, the hydraulic oil tank is respectively connected with a hydraulic oil pump and an overflow valve, the hydraulic oil pump and the overflow valve are both connected with a one-way valve, and a proportional unloading valve is connected with the hydraulic oil tank. Hydraulic oil with certain pressure is introduced into a rod cavity of the hydraulic oil cylinder, the pressure is maintained through a hydraulic oil pump, the gravity of the manifold movable arm is balanced by hydraulic pressure, and time and labor are saved when the manifold movable arm is manually adjusted; meanwhile, the hydraulic oil pump can weaken the vibration of the manifold through the hydraulic cylinder, and the service life of the manifold is prolonged.

(3) The hydraulic oil pump, the overflow valve and the check valve are connected with one stop valve, and the stop valve is arranged to close the liquid path and keep the pressure of the rod cavity of the hydraulic oil cylinder constant.

(4) The device has simple structure, belongs to detachable assembly, is suitable for different watersheds, and has wider application range and stronger practicability.

(5) The hydraulic system can weaken the vibration of the manifold, and the device has high efficiency, good safety and long service life.

(6) The quick connecting device composed of the hydraulic power-assisted system has multiple degrees of freedom and large working radius, is provided with the hydraulic system, balances the weight of a manifold, and can realize that one person can easily complete multi-degree-of-freedom rotation and stretching of a spatial position, thereby being quickly connected with a fracturing truck discharge manifold.

Drawings

FIG. 1 is a schematic diagram of the present invention;

reference numerals: 1 hydraulic oil tank, 2 hydraulic oil pump, 3 overflow valve, 4 stop valve, 5 one-way valve, 6 proportional unloading valve,

7 hydraulic cylinders, 8 air filters, 9 manifold movable arms, 10 manifold movable elbows and 11 mounting seats.

Detailed Description

For a better understanding of the present invention by those skilled in the art, the present invention will be described in further detail below with reference to the accompanying drawings and the following examples.