CN204127358U - Surge orifice control valve - Google Patents

Abstract

The utility model provides one to surge orifice control valve, comprise valve body, valve seat, valve plate, valve rod and valve gap, valve body is T-shaped three-port structure, outlet(discharge) flange is provided with in the bottom of valve body, the top of valve body is connected with valve gap, valve seat is provided with in valve body, the valve pocket that valve rod runs through in valve body is connected with valve plate, valve plate comprises upper valve plate and the lower valve plate of concentric setting, upper valve plate and lower valve plate are that disc type plane is connected, the lower surface of upper valve plate contacts with the upper surface of lower valve plate, upper valve plate and lower valve plate are axially respectively provided with a through hole, two valve plates are arranged in valve seat, the underpart of valve rod is connected with upper valve plate, the upper end portion of valve rod is connected with transmission shaft, the upper end portion of transmission shaft is connected with the head that surges.Surging orifice control valve can throttling, can stop again, can reduce installation flashboard valve, greatly save equipment investment, can realize remote operation, avoids the danger of artificial under high pressure manually-operable throttle valve.

Description

Hydraulic orifice throttle valve

technical field

The utility model relates to the technical field of petroleum machinery, in particular to a hydraulic orifice throttle valve.

Background technique

In the process of oil drilling, each well must install a set of choke and kill devices to control downhole pressure and achieve a safe state of near-balanced drilling. The choke and kill devices are composed of choke manifold and kill manifold The downhole pressure control is accomplished by the choke manifold, and the choke valve is the key control part of the choke manifold. The choke valve used in the currently used choke manifold is a cylindrical choke valve, which has the following disadvantages: The shaped throttle valve is easily damaged by downhole air erosion, short service life, inaccurate flow control, large vibration and instability when throttling; it cannot be completely closed.

The working principle of the existing throttling valve is to block the outlet through the rotation of the handwheel with a cylinder or needle head in front of a valve stem, thereby changing the throttling diameter to achieve the throttling effect, but the valve with this structure cannot If it is completely closed, it is necessary to connect an external gate valve in the closed circuit to close the circuit.

Utility model content

The technical problem to be solved by the utility model is to overcome the defects in the prior art, and provide a hydraulic orifice throttle valve, which can not only be completely closed, but also remotely operated, safe and reliable.

In order to solve the above technical problems, the utility model provides a hydraulic orifice throttle valve, which includes a valve body, a valve seat, a valve plate, a valve stem and a valve cover. There is an outlet flange, the upper part of the valve body is connected with the bonnet, the valve body is provided with a valve seat, the valve stem penetrates the valve cavity in the valve body and is connected with the valve plate, and the valve plate includes an upper valve plate and a lower valve plate set coaxially , the upper valve plate and the lower valve plate are connected in a disc-like plane, the lower surface of the upper valve plate is in contact with the upper surface of the lower valve plate, and a through hole is arranged in the axial direction of the upper valve plate and the lower valve plate respectively. The first valve plate is arranged in the valve seat, the lower end of the valve stem is connected with the upper valve plate, the upper end of the valve stem is connected with the transmission shaft, and the upper end of the transmission shaft is connected with the hydraulic head.

As a further improvement of the utility model, the shape of the through hole is a semicircle.

The beneficial effects achieved by the utility model are: the hydraulic orifice throttle valve of the utility model can not only throttle the flow, but also cut off the flow, and can reduce the installation of a gate valve, which greatly saves equipment investment. The valve plate is made of stainless steel with supersonic spraying treatment. When the throttle valve is closed, the valve plate can work normally under the pressure of 105Mpa. The hydraulic head is used to realize remote operation and avoid manual operation of the throttle valve under high pressure. danger.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Figure 2 is a top view of the valve plate. the

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described. The following examples are only used to illustrate the technical solution of the utility model more clearly, but not to limit the protection scope of the utility model.

As shown in the figure, the utility model provides a hydraulic orifice throttle valve, which includes a valve body 5, a valve seat 2, an upper valve plate 4, a lower valve plate 3, a valve stem 6 and a valve cover 7. The valve body 5 is T-shaped three-way structure, the bottom of the valve body 5 is provided with an outlet flange 1, the upper part is connected with the valve cover 7, the valve seat 2 is installed in the valve body 5, and the valve stem 6 runs through the valve cavity in the valve body 5 and is connected with the valve plate , place the valve plate in the valve seat 2, the valve plate includes an upper valve plate 4 and a lower valve plate 3 coaxially arranged, the upper valve plate 4 and the lower valve plate 3 are connected in a disc-like plane, the upper valve plate 4 The lower surface is in contact with the upper surface of the lower valve plate 3, and a semicircular through hole 11 is respectively arranged on the upper valve plate 4 and the lower valve plate 3 in the axial direction, and the lower end of the valve stem 6 is connected with the upper valve plate 4, The upper end of the valve rod 6 is connected with the transmission shaft 8 , and the upper end of the transmission shaft 8 is connected with the hydraulic head 9 .

In normal working condition, the valve is fully open; when throttling is required, the hydraulic head 9 drives the transmission shaft 8 to rotate clockwise, and the valve stem 6 rotates accordingly and drives the upper valve plate 4 to rotate, so that the semicircular hole of the lower valve plate 3 and the upper valve plate The semicircular hole of the valve plate 4 is gradually staggered, the valve starts to throttle, and gradually reduces the flow rate. When the valve stem 6 continues to rotate until the semicircular hole of the lower valve plate 3 is completely blocked by the upper valve plate 4, the valve is closed. the

When the valve needs to be opened, the hydraulic head 9 drives the transmission shaft 8 to rotate counterclockwise, the valve stem 6 rotates accordingly and drives the upper valve plate 4 to rotate, so that the semicircular hole of the lower valve plate 3 and the semicircular hole of the upper valve plate 4 are gradually staggered, The valve starts to throttle, and gradually increases the flow rate. When the valve stem 6 continues to rotate until the semicircular hole of the lower valve plate 3 and the semicircular hole of the upper valve plate 4 are completely aligned and blocked, the valve is fully opened.

The above is only a preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the utility model, some improvements and deformations can also be made. And deformation should also be regarded as the protection scope of the present utility model.

Claims (2)

1. A hydraulic orifice throttle valve, comprising a valve body, a valve seat, a valve plate, a valve stem and a valve cover, the valve body is a T-shaped three-way structure, and the bottom of the valve body is provided with an outlet flange , the upper part of the valve body is connected to the valve cover, the valve body is provided with a valve seat, the valve rod passes through the valve cavity in the valve body and is connected to the valve plate, and the valve plate is placed in the valve seat, it is characterized in that: The valve plate includes an upper valve plate (4) and a lower valve plate (3) arranged coaxially. The lower surface of the lower valve plate (3) is in contact with the upper surface of the lower valve plate (3), and a through hole (11) is arranged axially on the upper valve plate (4) and the lower valve plate (3), and the valve stem ( The lower end of 6) is connected to the upper valve plate (4), the upper end of the valve stem (6) is connected to the transmission shaft (8), and the upper end of the transmission shaft (8) is connected to the hydraulic head (9). 2. The hydraulic orifice throttle valve according to claim 1, characterized in that: the through hole (11) is semicircular in shape.