Self-protection oil well pump standing valve

Abstract

A self-protection oil well pump standing valve comprises a box 10, a ball 2 and a ring 20 are coaxially installed in the box 10, a sleeve 21 is installed on the outer diameter of the ring 20, a spring 50 is installed below the ring 20, the ring 20 can slide downwards in the axial direction, a plug 60 is installed on the lower portion of the box 10, an opening 11 and a concave 12 are formed in the box 10, a hand 30 is installed on the side wall of an inner hole of the box 10, and the lower end of the hand 30 is installed in the concave 12. A clamp 40 is installed on the hand 30, the clamp 40 is used for tightening the hand 30 in the axial direction, the hand 30 can rotate around the concave 12 in the radial direction, the hand 30 forms constant-pressure locking on the ring 20 under the potential energy effect of the clamp 40, normal work of the oil well pump is guaranteed, meanwhile, the self-protection function is achieved, it is guaranteed that the defects of plastic deformation, tripping leakage, breakage and the like of a pump cylinder due to internal pressure are overcome, and the service life of the oil well pump is prolonged. The long-standing, big and difficult problems puzzling for many years in the prior art are thoroughly solved, and the whole mechanism is simpler, more scientific and more reasonable.

Description

TECHNICAL FIELD

[0001] The utility model discloses a self-protection oil well pump fixed valve belongs to self-protection oil well pump fixed valve technical field. BACKGROUND

[0002] The oil well pump belongs to the base hole manufacturing plunger pump, specifically, the pump barrel is processed into a finished product, the plunger is matched according to the size of the pump barrel, the matching gap of the pump barrel and the plunger is controlled by controlling the size of the plunger, and the matching gap is divided into 1-5 levels. When the matching gap of the oil well pump becomes larger, the leakage of the oil well pump will increase in steps, so the matching gap of the oil well pump is basically controlled within the range of 1 level gap (0.025mm-0.088mm). The matching gap of the oil well pump will gradually increase during use. The reason is that the matching surface of the pump barrel and the plunger will inevitably wear, and the increase of the matching gap will cause the increase of the leakage. Generally, this change will cause the oil well pump to be scrapped due to the low pump efficiency after about 3 years. This result is widely accepted and recognized by the oil field. However, there are several results that the oil field cannot accept. The first is that the pump barrel of the oil well pump expands and changes in size (expands and thickens) under the action of internal pressure, causing the leakage of the oil well pump to increase directly. The second is that the high internal pressure of the oil well pump causes the oil well pump to be disconnected and leak. The third is that the pump barrel is broken due to the high internal pressure of the oil well pump. The three situations are caused by the high internal pressure of the oil well pump. In actual production process, the internal pressure of the oil well pump will inevitably rise under certain conditions. It is related to testing, leakage testing, operation, fracturing and the like. In order to avoid the occurrence of the above accidents, the self-protection function is required when the internal pressure rises. However, the current technology cannot solve this problem. Therefore, the self-protection oil well pump fixed valve technology has become a necessity.

[0003] The utility model discloses a self-protection oil well pump fixed valve, sets up the protection mechanism, when the pump internal pressure rises, the protection mechanism can automatically control and protect the oil well pump, the utility model improves dozens of schemes successively, through two years' optimization design, through thirty times' test and experiment, finally, the utility model solves all the above problems with the simplest structure, provides a kind of self-protection oil well pump fixed valve. UTILITY MODEL CONTENTS

[0004] The problem to be solved by the utility model is realized by the following technical scheme:

[0005] A self-protection oil well pump fixed valve, comprising: a box 10, a ball 2 is coaxially installed in the box 10, a ring 20 is installed on the outer diameter of the ball 2, a sleeve 21 is installed on the ring 20, a spring 50 is installed below the ring 20, the ring 20 is slidably downward along the axial direction, a plug 60 is installed at the lower part of the box 10, an opening 11 and a recess 12 are arranged on the box 10, a hand 30 is installed on the side wall of the hole in the box 10, the lower end of the hand 30 is installed in the recess 12, a clamp 40 is installed on the hand 30, the clamp 40 is used for tightening the hand 30 towards the axial direction, the hand 30 can rotate radially around the recess 12, and the hand 30 forms a constant-pressure locking on the ring 20 under the potential energy of the clamp 40.

[0006] Preferably, the opening 11 and the recess 12 are arranged on the box 10, and the lower end of the hand 30 is installed in the recess 12.

[0007] Preferably, the diameter of the opening 11 is 3-30 mm.

[0008] Preferably, the number of the opening 11 is 1-12.

[0009] Preferably, the number of the recess 12 is 1-8.

[0010] The technical principle is as follows:

[0011] In normal operation, the clamp 40 tightens the hand 30 towards the axial direction, the hand 30 forms a constant-pressure locking force on the ring 20 under the potential energy of the clamp 40, and the constant-pressure locking force is the maximum safe load of the self-protection oil well pump fixed valve; when the actual load exceeds the maximum safe load, the ring 20 is pushed away from the constant-pressure locking of the hand 30 and moves downward under the pushing force formed by the internal pressure until the opening 11 is exposed, the internal pressure load of the pump is discharged and reduced to the safe load range, so that the self-protection effect is achieved, and the self-protection oil well pump fixed valve is formed.

[0012] Compared with the prior art, the self-protection oil well pump fixed valve has the beneficial effects:

[0013] The self-protection oil well pump fixed valve can ensure normal operation of the oil well pump, has the self-protection function, can prevent the pump barrel from being plastically deformed, tripped, leaked and ruptured, and can completely solve the old and difficult problem in the traditional prior art, and the overall mechanism is more simple, scientific and reasonable. DRAWINGS

[0014] Figures 1 to 3 The drawings of the utility model are shown in the specification, wherein Figure 1 is a traditional technology fixed valve, Figure 1 only for providing contrast reference for the utility model, and is not the content of the utility model; wherein Figure 2 is a structure diagram of the self-protection oil well pump fixed valve in the normal working state, wherein Figure 3It is a structure state diagram of a self-protection state of a self-protection fixed valve of an oil pumping pump. Figure 1 to the accompanying drawings Figure 3 1, valve cover; 2, valve ball; 3, valve seat; 4, lower joint; 10, box; 11, mouth; 12, recess; 20, ring; 21, sleeve; 30, hand; 40, clamp; 50, spring; 60, plug. DETAILED DESCRIPTION

[0015] The technical scheme of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0016] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0017] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0018] As shown in Figure 2 , Figure 3 The present application provides a self-protection fixed valve of an oil pumping pump, which comprises a box 10, a ball 2 and a ring 20 coaxially installed in the box 10, a sleeve 21 installed on the outer diameter of the ring 20, a spring 50 installed below the ring 20, the ring 20 being slidable downward along the axial direction, a plug 60 installed at the lower part of the box 10, a mouth 11 and a recess 12 provided on the box 10, a hand 30 installed on the side wall of the inner hole of the box 10, the lower end of the hand 30 being installed in the recess 12, a clamp 40 installed on the hand 30, the clamp 40 being used to tighten the hand 30 in the axial direction, the hand 30 being able to rotate radially around the recess 12, and the hand 30 forming a constant pressure locking on the ring 20 under the potential energy of the clamp 40.

[0019] Preferably, the box is provided with a mouth 11 and a recess 12, and the lower end of the hand 30 is mounted in the recess 12.

[0020] Preferably, the diameter of the mouth 11 is 3-30mm.

[0021] Preferably, the number of the mouth 11 is 1-12.

[0022] Preferably, the number of the recess 12 is 1-8.

[0023] The technical principle is as follows:

[0024] In normal operation, the clamp 40 tightens the hand 30 in the axial direction, and the hand 30 forms a constant pressure locking force on the ring 20 under the potential energy of the clamp 40. This constant pressure locking force is the maximum safe load of the self-protecting fixed valve of the oil pump.

[0025] Although the embodiments of the utility model have been disclosed as above, it is not limited to the application listed in the specification and the embodiments. It can be fully applied to various fields suitable for the utility model. For those skilled in the art, other modifications can be easily realized. Therefore, the utility model is not limited to specific details and the figures shown and described herein without departing from the general concept defined by the claims and the equivalent range.

[0026] In the description of the utility model, it should be noted that the statement "movement" should be understood in a broad sense. It can be movement by relying on external force pulling or lifting, or movement by relying on its own kinetic energy, or movement by relying on the interaction force of electromagnetic or magnetic energy. In specific implementation, it can be considered as the relative motion between the two. When the moving object is stationary, the object opposite to it can move.

[0027] Working process:

[0028] As shown in Figure 2 normal operation, the clamp 40 tightens the hand 30 in the axial direction, and the hand 30 forms a constant pressure locking force on the ring 20 under the potential energy of the clamp 40. This constant pressure locking force is the maximum safe load of the self-protecting fixed valve of the oil pump.

[0029] As shown in Figure 3As shown, when the actual load exceeds the maximum safe load, the ring 20 will be pushed away from the constant pressure locking of the hand 30 and move down under the thrust formed by the internal pressure, the ring 20 moves down with the sleeve 21 as a whole to expose the outlet 11, the internal pressure load of the pump is discharged through the outlet 11 and falls within the safe load range, so as to achieve the self-protection effect, that is, the self-protection fixed valve of the oil pumping pump.

[0030] When the internal pressure of the pump returns to the normal range, the spring 50 pushes the ring 20 to move up with the sleeve 21, the ring 20 is reset, the clamp 40 is tightened, the hand 30 is re-tightened, and the normal working state is restored. Figure 2 Figure 3 As shown.

[0031] Thus, the working process of the self-protection fixed valve of the oil pumping pump is realized.

[0032] Although the embodiments of the utility model have been disclosed as above, it is not limited to the application listed in the specification and the embodiments. It can be fully applied to various fields suitable for the utility model. For those skilled in the art, other modifications can be easily realized. Therefore, the utility model is not limited to specific details and the figures shown and described herein without departing from the general concept defined by the claims and the equivalent range.

Claims

1. A self-protecting fixed valve for a progressive cavity pump, comprising: It comprises: a box (10) in which a ball (2) and a ring (20) are coaxially installed, a sleeve (21) is installed on the outer diameter of the ring (20), a spring (50) is installed below the ring (20), the ring (20) can slide downward along the axial direction, a plug (4) is installed at the lower part of the box (10), an opening (11) and a recess (12) are arranged on the box (10), a hand (30) is installed on the inner hole side wall of the box (10), the lower end of the hand (30) is installed in the recess (12), a clamp (40) is installed on the hand (30), the clamp (40) is used to tighten the hand (30) in the axial direction, the hand (30) can rotate radially out of the recess (12), and the hand (30) forms a constant pressure locking on the ring (20) under the potential energy of the clamp (40).

2. A self-protecting fixed valve for a pump according to claim 1, characterized in that: The diameter of the opening (11) is 3-30 mm.

3. A self-protecting fixed valve for a pump according to claim 1, characterized in that: The number of the opening (11) is 1-12.

4. A self-protecting fixed valve for a pump according to claim 1, characterized in that: The number of the recess (12) is 1-8.

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