CN204533613U - A kind of dished spring assembly of water injection flow controller - Google Patents

Abstract

The utility model proposes a disc spring component of a water injection flow control device, which includes a valve body, a valve cover and a valve stem. A valve cylinder is arranged in the valve body, and the valve stem seals through the valve cover and is vertically inserted into the valve cylinder. The valve cylinder is equipped with a grinding wheel and a static valve seat. The grinding wheel is set in contact with the upper and lower sides of the static valve seat and the two are in dynamic sealing cooperation. The disc spring assembly that makes the grinding wheel elastically adhere to the static valve seat. The disc spring assembly includes a plane bearing and a disc spring set that are sleeved on the valve stem. The loose ring, the disc spring group is movably sleeved on the valve stem and one end of the disc spring is against the loose ring in the axial direction of the valve stem. The outer end of the valve cover is also provided with a bearing cap sleeved on the valve stem. Resists the end of the bearing pressure cap; the disc spring assembly can automatically compensate for the seal failure caused by the wear of the grinding wheel, reduce leakage, and have a longer service life.

Description

Disc spring assembly of a water injection flow control device

technical field

The utility model relates to a water injection flow control device, in particular to a disc spring assembly of the water injection flow control device.

Background technique

At present, water flooding in oilfields mainly uses regulating valves to control the water injection flow rate. For example, the grinding wheel control valve: the grinding wheel control valve is formed with a fluid medium inlet on one side and a fluid medium outlet on the other side. A lower grinding wheel and an upper grinding wheel are arranged inside the valve cavity of the valve body. The lower grinding wheel and the upper grinding wheel are symmetrically formed with an orifice connecting the fluid medium inlet and the fluid medium outlet. The two grinding wheels rotate symmetrically, and the flow is adjusted by changing the flow cross-sectional area of the symmetrical orifice of the two grinding wheels. .

There are certain defects in the production process of the grinding wheel control valve. Since the contact sealing surface between the upper grinding wheel and the lower grinding wheel is always in a dynamic sealing state, and the sealing effect of the two is mainly affected by the following factors: 1. The upper grinding wheel is to the lower grinding wheel 2. The size of the contact sealing surface between the upper grinding wheel and the lower grinding wheel, 3. The wear degree of the contact sealing surface; because the upper and lower grinding wheel contact surfaces of the existing grinding wheel control valve often rub, it is easy to And wear occurs, and at this time, the pressing force of the upper grinding wheel on the lower grinding wheel will decrease, and water leakage will occur when contacting the sealing surface, which will affect the control of the water injection in the oil field, and also increase the valve switching torque and increase the output power of the motor. It causes a waste of power resources and directly affects the service life of the intelligent flow controller and the grinding wheel regulating valve. At the same time, under the condition of high pressure, the valve stem of the grinding wheel regulating valve will fail to seal due to wear.

Utility model content

Based on the above problems, the purpose of this utility model is to provide a disc spring assembly of a water injection flow control device, which can automatically compensate for seal failure caused by grinding wheel wear, reduce leakage, and have a longer service life.

In view of the above problems, the following technical solutions are provided: a disc spring assembly of a water injection flow control device, including a valve body, a valve cover and a valve stem. Liquid port and liquid outlet, the valve stem seals through the valve cover and is vertically inserted into the valve cylinder. A grinding wheel assembly is arranged in the valve cylinder. The grinding wheel assembly includes a grinding wheel fixed to the valve stem and a grinding wheel fixed to the valve cylinder. The static valve seat inside, the grinding wheel and the static valve seat are set in contact with the upper and lower sides, and the two are in dynamic sealing cooperation. The grinding wheel and the static valve seat are respectively provided with through-hole structures connected to the liquid inlet and liquid outlet and corresponding in position. In that: it also includes a disc spring assembly that is arranged on the valve stem so that the grinding wheel is elastically attached to the static valve seat. The spring set, the plane bearing includes a tight ring fixedly sleeved on the valve stem and a loose ring that is stationary relative to the valve cover. The outer end of the valve cover is also provided with a bearing cap sleeved on the valve stem, and the other end of the disc spring group is against the end of the bearing cap.

The utility model is further configured as follows: the valve stem is provided with a bearing bushing ring for easy installation of the plane bearing, the bearing bushing includes a socket part and a step end fixedly socketed with the valve stem, and the tight ring of the plane bearing The end face is axially close to the end of the step.

The utility model is further provided that the disc spring group includes a plurality of stacked disc springs.

In the utility model, after a long time of use, the mating surface of the grinding wheel and the static valve seat will be slightly worn, which is not conducive to the sealing fit of the two; the arrangement of the disc spring assembly can make the grinding wheel always touch the static valve seat with a certain pressing force , The disc spring can elastically reach the valve stem to compensate for the wear of the former, so that the grinding wheel can maintain a certain pressing force on the static valve seat, and can always be in a stable sealing state.

Description of drawings

Fig. 1 is the structural representation in the utility model embodiment;

Fig. 2 is a schematic structural view of a bearing bushing in an embodiment of the present invention.

The meaning of the symbols in the figure: 1-valve body; 1a-liquid inlet; 1b-liquid outlet; 1c-valve cylinder; 2-static valve seat; 3-grinding wheel; 4-bonnet; 5-valve stem; 6-disc Spring group; 7-plane bearing; 71-loose ring; 72-tight ring; 8-bearing bushing; 8a-step end;

Detailed ways

Below in conjunction with accompanying drawing and embodiment, the specific embodiment of the utility model is described in further detail. The following examples are used to illustrate the utility model, but not to limit the scope of the utility model.

As shown in Fig. 1 and Fig. 2, a disc spring assembly of a water injection flow control device includes 6 pieces, including a valve body 1, a valve cover 4 and a valve stem 5. The valve body 1 is provided with a valve cylinder 1c, and the two sides of the valve body 1 The liquid inlet 1a and the liquid outlet 1b connected to the valve cylinder 1c are respectively provided. The valve stem 5 seals through the valve cover 4 and is vertically inserted into the valve cylinder 1c. The outer end of the valve stem 5 is connected to the handle 9 , the valve cylinder 1c is provided with a grinding wheel 3 assembly, the grinding wheel 3 assembly includes the grinding wheel 3 fixedly connected to the valve stem 5 and the static valve seat 2 fixed in the valve cylinder 1c, the grinding wheel 3 and the static valve seat 2 are arranged in contact with the upper and lower sides The dynamic and sealing cooperation, the grinding wheel 3 and the static valve seat 2 are respectively provided with through-hole structures connected to the liquid inlet 1a and the liquid outlet 1b and corresponding in position, and the valve stem 5 is also installed so that the grinding wheel 3 is elastically attached to the static valve seat. There are 6 disc spring groups on the valve seat 2, and the 6 disc spring groups include a plane bearing 7 and a disc spring group 6 respectively sleeved on the valve stem 5 along the direction in which the valve stem 5 extends. 6 includes a plurality of stacked disc springs, and the plane bearing 7 includes a tight ring 72 fixedly sleeved on the valve stem 5 and a loose ring 71 that is stationary relative to the valve cover 4, and the disc spring group 6 is movably sleeved on the valve stem 5 And one end thereof is against the loose ring 71 in the axial direction of the valve stem 5, and the outer end of the valve cover 4 is also provided with a bearing pressure cap 10 sleeved on the valve stem 5, and the other end of the disc spring group 6 is against the bearing pressure cap 10. the end of. The valve stem 5 is provided with a bearing bushing 8 for facilitating the installation of the plane bearing 7. The bearing bushing 8 includes a socket portion 8b fixedly socketed with the valve stem 5 and a stepped end 8a. The tight ring 72 of the plane bearing 7 is on the end face close to the step end 8a.

In the utility model, after a long period of use, the mating surface of the grinding wheel 3 and the static valve seat 2 is slightly worn, which is not conducive to the sealing fit of the two; the setting of 6 disc spring groups can make the grinding wheel 3 always be pressed with a certain degree of pressure. The force resists the static valve seat 2, and the disc spring can elastically resist the valve stem 5 to compensate for the wear of the former, so that the grinding wheel 3 maintains a certain pressing force on the static valve seat 2, and can always be in a stable sealing state.

The above is only the 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 modifications can also be made. These improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims (3)

1. the dished spring assembly of a water injection flow controller, comprise valve body, valve gap and valve rod, valve barrel is provided with in valve body, valve body both sides arrange the liquid entering hole and liquid outlet that are communicated in valve barrel respectively, valve stem seal passes valve gap and is vertically plugged in valve barrel, abrasive wheel assembly is provided with in valve barrel, described abrasive wheel assembly comprises the emery wheel being fixedly connected on valve rod and the quiet valve seat be fixed in valve barrel, emery wheel contacts with quiet valve seat top and bottom and to arrange and both motive sealings coordinate, emery wheel and quiet valve seat are arranged respectively and is communicated in liquid entering hole and liquid outlet and the corresponding through-hole structure in position, it is characterized in that: also include to arrange and valve rod makes emery wheel elasticity be close to dished spring assembly on quiet valve seat, described dished spring assembly comprises and stretches into along valve rod the plane bearing and disc spring group that direction are socketed on successively respectively valve rod, plane bearing comprises the fixedly sleeved tight ring in valve rod and the DNA releaxed circular DNA static relative to valve gap, described disc spring group pivot bush unit is in valve rod and its one end is butted on DNA releaxed circular DNA on valve rod axial direction, the outer end of valve gap also arranges the bearing pressure cap being socketed on valve rod, the other end of disc spring group is butted on the end of bearing pressure cap.

2. the dished spring assembly of a kind of water injection flow controller according to claim 1, it is characterized in that: described valve rod is arranged the bearing lining ring installed for being convenient to plane bearing, bearing lining ring comprises the belled part fixedly sleeved with valve rod and stepped ends, and the tight ring end face axial of plane bearing is close to stepped ends.

3. the dished spring assembly of a kind of water injection flow controller according to claim 1, is characterized in that: described disc spring group comprises the disc spring of multiple superposition.