CN206036328U - Flow automatically regulated constant flow valve is carried to fluid - Google Patents

Abstract

The utility model discloses a constant flow valve for automatic regulation of oil delivery flow, which is characterized in that the middle section connected with the upper cylinder is an outer cone cylinder whose diameter gradually decreases downwards, and the lower section connected with the cone cylinder is a lower cylinder. The core is provided with an inner cylinder that is placed in the upper cylinder and fits with the upper cylinder. The inner cylinder is connected with an inner cone that is in clearance with the outer cone. The lower end of the inner cone is connected with a coaxial In the inner cylinder, there is an annular gap between the inner wall of the lower cylinder and the outer wall of the inner cylinder. The lower end of the inner cylinder is connected with an outwardly protruding annular outer edge matching the inner wall gap of the lower cylinder. A torsion spring is arranged in the annular gap, and the inner cone There are inner cone flow channels distributed in the circumferential direction of the cylinder, and the circumferential interval of the inner cone flow channels is greater than the circumferential length. The outer cone is provided with an outer cone flow channel opposite to the inner cone flow channel, and the inner wall of the inner cylinder is set. There is a helix that goes up in a spiral. When the pressure changes, the variation range of the flow rate can be reduced, and the flow rate tends to be constant.

Description

A constant flow valve for automatic adjustment of oil delivery flow

technical field

The utility model relates to a valve for adjusting flow in oil delivery, in particular to a constant flow valve for automatic adjustment of oil delivery flow.

Background technique

In oil field production, valves, as flow control components, are an essential part of pipeline transportation. In order to obtain constant flow, most existing valves are realized by manually controlling the opening of the valve. After adjustment, if the pressure fluctuates , the flow rate will also change accordingly, of course, it can also be controlled automatically by electric motor, but the cost is high, and it cannot be widely used, which still needs to be solved by technology.

Utility model content

In order to solve the above problems, the utility model provides a constant flow valve for automatic adjustment of oil delivery flow.

The technical solution adopted by the utility model is: a constant flow valve for automatic adjustment of oil delivery flow, which is characterized in that it includes a valve body, a valve core and a valve cover, the upper section of the valve body is an upper cylinder, and the middle section connected with the upper cylinder is The outer cone whose diameter gradually becomes smaller downwards, the lower section connected to the cone is the lower cylinder, the valve core is provided with an inner cylinder that is placed in the upper cylinder and fits with the upper cylinder, and the inner cylinder is connected with the outer cylinder. The inner cone with the gap fit of the cone, the lower end of the inner cone is connected with the inner cylinder coaxial with the lower cylinder, there is an annular gap between the inner wall of the lower cylinder and the outer wall of the inner cylinder, and the lower end of the inner cylinder is connected with an outwardly protruding The ring-shaped outer edge matched with the inner wall gap of the lower cylinder, a torsion spring is arranged in the annular gap, one end of the torsion spring is connected to the ring-shaped outer edge, and the other end is connected to the lower cylinder, and the inner cone flow is distributed on the upper circumference of the inner cone. The circumferential interval of the inner cone flow channel is greater than the circumferential length. The outer cone is provided with an outer cone flow channel opposite to the inner cone flow channel. The inner wall of the inner cylinder is provided with a spiral plate that spirals upward. There is a limiting cylinder connected inside the upper cylinder, the lower end face of which is opposite to the upper end surface of the inner cylinder, the limiting cylinder is connected with an inflow channel through a tapered transition part, and the outer cylinder is connected with an outflow channel.

Further, the inflow channel is connected with a drainage channel protruding into the inner cylinder.

In the utility model, when the pressure on the input side is average, the flow channel of the inner cone and the flow channel of the outer cone are staggered to cover half, and the oil enters the valve core from the inflow channel, and passes through the inner cylinder, the flow channel of the inner cone and the outer cone. When the flow channel flows out to the outflow channel, the force on the spiral plate keeps it balanced. When the input pressure increases, the force on the spiral plate increases, and the valve core rotates against the elastic force of the torsion spring, so that the flow channel of the inner cone barrel and the outer cone The flow path of the barrel continues to stagger, reducing the opening. When the input pressure decreases, the force on the spiral plate decreases, and the valve core rotates under the elastic force of the torsion spring, so that the flow path of the inner cone barrel and the flow path of the outer cone barrel are staggered. It becomes smaller and the opening is increased, so that when the pressure changes, it can reduce the change range of the flow rate and provide a flow rate that tends to be constant.

Description of drawings

Fig. 1 is the overall schematic diagram of the utility model embodiment.

Fig. 2 is a schematic cross-sectional view of an embodiment of the utility model.

Fig. 3 is a schematic diagram of an explosion of an embodiment of the utility model.

Reference signs: 1 upper cylinder; 2 outer cone; 3 lower cylinder; 4 inner cylinder; 5 inner cone; 6 inner cylinder; 7 annular outer edge; 8 torsion spring; 9 inner cone flow path; 10 Outer cone tube flow channel; 11 Spiral piece; 12 Limiting tube; 13 Inflow channel; 14 Drain channel; 15 Outflow channel.

detailed description

The embodiment of the utility model is shown in Figures 1 and 2. The constant flow valve for automatic adjustment of oil delivery flow includes a valve body, a valve core and a valve cover. The upper section of the valve body is an upper cylinder 1 connected to the upper cylinder. The middle section is the outer cone 2 whose diameter gradually decreases downwards, the lower section connected to the cone is the lower cylinder 3, and the valve core is provided with an inner cylinder 4 that is placed in the upper cylinder and fits with the upper cylinder. The cylinder is connected with an inner cone cylinder 5 that fits in a gap with the outer cone cylinder, and the lower end of the inner cone cylinder is connected with an inner cylinder 6 coaxial with the lower cylinder, and there is an annular gap between the inner wall of the lower cylinder and the outer wall of the inner cylinder, and the inner cylinder The lower end is connected with an outwardly protruding ring-shaped outer edge 7 that fits with the inner wall of the lower cylinder. The valve core can rotate freely. A torsion spring 8 is arranged in the annular gap. One end of the torsion spring is connected to the ring-shaped outer edge, and the other end is connected to the lower cylinder. On the barrel, relative torsion is provided. The inner cone barrel is distributed with inner cone barrel flow channels 9 in the circumferential direction. In this embodiment, there are two inner cone barrel flow channels. The inner cone flow channel is opposite to the outer cone flow channel 10. The outer cone flow channel can be completely opened and completely closed by the rotation of the valve core. The inner wall of the inner cylinder is provided with a spiral plate 11 that rises spirally. The force of the valve core can be adjusted by the spiral Angle adjustment relies on fluid to provide rotational power for the valve core. The valve cover is provided with a limit cylinder 12 connected to the upper cylinder, the lower end surface of which is opposite to the upper end surface of the inner cylinder, to limit the inner cylinder and realize the airtight connection. The limiting cylinder is connected to the inflow channel 13 through the tapered transition part, and the inflow channel is connected to the drainage channel 14 protruding into the inner cylinder, which has directivity. The outer cylinder is connected to the outflow channel 15, and the connection between the parts is through the round over.

In the utility model, when the pressure on the input side is average, the flow channel of the inner cone and the flow channel of the outer cone are staggered to cover half, and the oil enters the valve core from the inflow channel, and passes through the inner cylinder, the flow channel of the inner cone and the outer cone. When the flow channel flows out to the outflow channel, the force on the spiral plate keeps it balanced. When the input pressure increases, the force on the spiral plate increases, and the valve core rotates against the elastic force of the torsion spring, so that the flow channel of the inner cone barrel and the outer cone The flow path of the barrel continues to stagger, reducing the opening. When the input pressure decreases, the force on the spiral plate decreases, and the valve core rotates under the elastic force of the torsion spring, so that the flow path of the inner cone barrel and the flow path of the outer cone barrel are staggered. It becomes smaller and the opening is increased, so that when the pressure changes, it can reduce the change range of the flow rate and provide a flow rate that tends to be constant.

In summary, the above is only a preferred embodiment of the utility model, and all equivalent modifications and additions made in accordance with the present application are regarded as the technical scope of the utility model.

Claims (2)

1. A constant flow valve for automatic adjustment of oil delivery flow, characterized in that it includes a valve body, a spool and a valve cover, the upper section of the valve body is an upper cylinder, and the middle section connected with the upper cylinder is a valve whose diameter gradually decreases downwards. Outer cone, the lower section connected by the cone is the lower cylinder, the valve core is provided with an inner cylinder that is placed in the upper cylinder and fits with the upper cylinder, and the inner cylinder is connected with an inner cone that is in clearance with the outer cone The lower end of the inner cone is connected with an inner cylinder coaxial with the lower cylinder. There is an annular gap between the inner wall of the lower cylinder and the outer wall of the inner cylinder. There is a torsion spring in the annular gap, one end of the torsion spring is connected to the outer edge of the ring, and the other end is connected to the lower cylinder. The inner cone is distributed with flow channels in the upper direction of the inner cone, and the flow channels of the inner cone The circumferential interval is greater than the circumferential length. The outer cone is provided with an outer cone flow channel opposite to the inner cone flow channel. The inner wall of the inner cylinder is provided with a spiral piece that rises. 1. A limiting cylinder whose lower end surface is opposite to the upper end surface of the inner cylinder, the limiting cylinder is connected with an inflow channel through a tapered transition part, and the outer cylinder is connected with an outflow channel. 2 . The constant flow valve for automatic adjustment of oil delivery flow according to claim 1 , wherein the inflow channel is connected with a drainage channel protruding into the inner cylinder. 3 .