Anti-impact fixed valve of oil well pump

Abstract

The application discloses an anti-collision oil pumping pump fixed valve, which comprises a box body, a protective sleeve installed in the box body, a deceleration ring installed in the protective sleeve, a deceleration shaft contained in the deceleration ring, a magnetic resistance section installed at the lower end of the deceleration shaft, and a ball installed at the lower end of the magnetic resistance section. The ball slowly contacts the box body and slowly separates from the box body, thereby completely solving the old and difficult problem in the prior art, and the whole mechanism is more simple, scientific and reasonable.

Description

TECHNICAL FIELD

[0001] The application discloses an anti-impact oil well pump fixed valve and belongs to the technical field of anti-impact oil well pump fixed valves. BACKGROUND

[0002] The oil well pump fixed valve is an important component of the oil well pump (structure, see the attached Figure 1 The valve ball of the oil well pump fixed valve in the prior art will keep jumping during the upstroke process, and the jumping is caused by the impact of well fluid; the impact will occur when the valve ball jumps, and the impact is specifically reflected in that the valve ball will impact the top position of the cavity of the valve body after jumping, then rebound downward to impact the valve seat, then jump again under the action of the impact of the liquid flow and the rebound force, and so on, until the upstroke process is completed, and the impact cannot be avoided.

[0003] The jumping and impact of the valve ball cannot be completely avoided, because only the contact and separation of the valve ball and the valve seat can realize the closing and opening of the fixed valve, therefore, the anti-impact technology of the oil well pump fixed valve in the prior art is very limited.

[0004] In the prior art, the guiding technology for limiting the impact of the valve ball on the side wall and the top of the fixed valve cavity is adopted, but the impact of the valve ball on the valve seat cannot be avoided, and the frequency of the jumping of the valve ball under the impact of the well fluid is very high, and therefore the frequency of the impact is very high.

[0005] The rapid jumping and impact of the valve ball will cause the damage of the sealing surface of the valve ball and the valve seat, and further cause the failure of the whole oil well pump, and the repeated impact of the valve ball on the valve seat is the only main reason for the failure of the valve ball and the valve seat, and it is an urgent need to solve the repeated impact of the valve ball on the valve seat, but the prior art cannot solve this problem.

[0006] The application aims at solving the problems and deficiencies of the prior art products, and provides an anti-impact oil well pump fixed valve, and the main purpose is to solve the high-speed impact of the valve ball on the valve seat and reduce the jumping speed of the valve ball. SUMMARY

[0007] The problems solved by the application are realized by the following technical scheme:

[0008] An anti-impact oil well pump fixed valve, characterized in that the anti-impact oil well pump fixed valve comprises a box body 10, a protective sleeve 20 is installed in the box body 10, a speed reduction ring 30 is installed in the protective sleeve 20, a speed reduction shaft 40 is contained in the speed reduction ring 30, a magnetic resistance section 50 is installed at the lower end of the speed reduction shaft 40, and a ball 60 is installed at the lower end of the magnetic resistance section 50.

[0009] Preferably, the protective sleeve 20 insulates the box 10 and the deceleration shaft 40.

[0010] Preferably, the magnetic resistance section 50 prevents the deceleration shaft 40 from magnetizing the ball 60.

[0011] Preferably, the deceleration ring 30 and the magnetic resistance section 50 are non-magnetic but conductive.

[0012] Preferably, the deceleration shaft 40 is a permanent magnet.

[0013] Preferably, the ball 60 forms a seal with the box 10.

[0014] Preferably, the deceleration shaft 40 is assembled with the magnetic resistance section 50 and the ball 60 to form a whole and move synchronously.

[0015] Preferably, the deceleration shaft 40 can slide up and down in the deceleration ring 30.

[0016] Preferably, the sliding property of the deceleration shaft 40 in the deceleration ring 30 complies with Lenz's law.

[0017] When the deceleration shaft 40 moves in the deceleration ring 30, an induced current is generated, which forms a magnetic field. According to Lenz's law, the induced current has a direction that always hinders the change of the magnetic flux that causes the induced current, that is, a resistance opposite to the moving direction of the deceleration shaft 40 is generated to slow down the moving speed of the deceleration shaft 40, thereby driving the magnetic resistance section 50 and the ball 60 to move slowly.

[0018] Under the action of Lenz's law, the moving speed of the deceleration shaft 40 in the deceleration ring 30 becomes very slow, and the deceleration shaft 40 drives the magnetic resistance section 50 and the ball 60 to move slowly, avoiding the high-speed and violent jumping of the valve ball, playing a role of deceleration, and the ball 60 slowly contacts the box 10, and then the ball 60 slowly separates from the box 10, so that the ball 60 does not jump at high speed and violently impact the box 10 throughout the whole process, achieving anti-collision.

[0019] The present application has the following beneficial effects compared with the prior art:

[0020] The ball 60 of the present application slowly contacts the box 10, that is, slowly separates from the box 10, completely solving the old and difficult problem that has plagued the traditional prior art for many years, and the overall mechanism is more simple, scientific and reasonable. BRIEF DESCRIPTION OF DRAWINGS

[0021] As Figure 1 shown, wherein: 1, valve cover; 2, valve ball; 3, valve seat; 4, lower joint, the shown drawing is the ideal working state of the traditional fixed valve, and the drawing Figure 1 provides a comparative reference for the present application.

[0022] As Figure 2 As Figure 3 And shown, wherein: 10, box body; 20, protective sleeve; 30, speed reducer ring; 40, speed reducer shaft; 50, magnetic blocking section; 60, ball, shown Figure 2 It is a structure diagram of the fixed valve of the anti-collision oil pumping pump, and it is a working state of the fixed valve of the anti-collision oil pumping pump during setting. Figure 3 It is a structure diagram of the fixed valve of the anti-collision oil pumping pump, and it is a working state of the fixed valve of the anti-collision oil pumping pump during opening. DETAILED DESCRIPTION

[0023] The technical solutions of the present application will be described below in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0024] 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 based on 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 therefore cannot be understood as indicating or implying 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 limiting the present application.

[0025] 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.

[0026] As Figure 2 , Figure 3 As shown in the first embodiment of the present application, an anti-collision oil pumping pump fixed valve is provided, which comprises: a box body 10, a protective sleeve 20 is installed in the box body 10, a speed reducer ring 30 is installed in the protective sleeve 20, a speed reducer shaft 40 is contained in the speed reducer ring 30, and a ball 60 is installed at the lower end of the speed reducer shaft 40.

[0027] Preferably, the protective sleeve 20 insulates the box body 10 and the speed reducer shaft 40.

[0028] Preferably, the magnetic resistance section 50 prevents the deceleration shaft 40 from magnetizing the ball 60.

[0029] Preferably, the deceleration ring 30 and the magnetic resistance section 50 are non-magnetic but conductive (such as copper, aluminum, zinc, and 1Cr18Ni9Ti stainless steel, etc.).

[0030] Preferably, the deceleration shaft 40 is a permanent magnet (such as neodymium iron boron, etc.).

[0031] Preferably, the ball 60 forms a seal with the box 10.

[0032] Preferably, the deceleration shaft 40 is assembled with the magnetic resistance section 50 and the ball 60 to form a whole and move synchronously.

[0033] Preferably, the deceleration shaft 40 can slide up and down in the deceleration ring 30.

[0034] Preferably, the sliding characteristics of the deceleration shaft 40 in the deceleration ring 30 comply with Lenz's law. When the deceleration shaft 40 moves in the deceleration ring 30, an induced current is generated, which forms a magnetic field. According to Lenz's law, the induced current has a direction that always hinders the change of the magnetic flux that causes the induced current, that is, a resistance opposite to the direction of movement of the deceleration shaft 40 is generated to slow down the movement speed of the deceleration shaft 40, thereby driving the magnetic resistance section 50 and the ball 60 to move slowly.

[0035] Under the action of Lenz's law, the movement speed of the deceleration shaft 40 in the deceleration ring 30 becomes very slow, and the deceleration shaft 40 drives the magnetic resistance section 50 and the ball 60 to move slowly, avoiding high-speed and violent jumping of the valve ball, playing a deceleration role, and the ball 60 slowly contacts the box 10, and then the ball 60 slowly separates from the box 10, without high-speed jumping and violent impact throughout the process, achieving anti-collision.

[0036] The working process is as follows:

[0037] During the upstroke, the well fluid drives the ball 60, the magnetic resistance section 50, and the deceleration shaft 40 to move upward, at this time, the deceleration shaft 40 and the deceleration ring 30 comply with Lenz's law to generate current and magnetic field, decelerate, and the ball 60, the magnetic resistance section 50, and the deceleration shaft 40 slowly move upward until the pushing force of the well fluid and the gravity of the ball 60, the magnetic resistance section 50, and the deceleration shaft 40 are balanced.

[0038] When the ball 60 and the magnetorquer 50 and the deceleration shaft 40 fall under the action of gravity, the falling speed of the deceleration shaft 40, the magnetorquer 50 and the ball 60 is slower than the upward speed, and the ball 60 slowly contacts the sealing surface of the box body 10 to achieve closed setting, so that the impact reaching the damage level is avoided.

[0039] Such repeated operation avoids impact throughout the whole process, so that the anti-collision is realized.

[0040] Although the embodiments of the present application 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 present application. Additional modifications can be easily realized by those skilled in the art. Therefore, the present application 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 scope.

[0041] In the description of the present application, it should be noted that the term "movement" should be understood in a broad sense, which 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 relative movement between the two, and when the moving object is stationary, the object opposite to it can move.

Claims

1. An anti-impact fixed valve for a sucker-rod pump, characterized in that, Comprising of: A box (10) having a protective cover (20) installed inside, the protective cover (20) having a deceleration ring (30) installed inside, the deceleration ring (30) containing a deceleration shaft (40), the deceleration shaft (40) having a magnetic resistance segment (50) installed at the lower end, the magnetic resistance segment (50) having a ball (60) installed at the lower end, the deceleration ring (30) and the magnetic resistance segment (50) are non-magnetic but conductive, the deceleration shaft (40) is a permanent magnet, the sliding characteristics of the deceleration shaft (40) inside the deceleration ring (30) complies with the Lenz's law.

2. A fixed valve for a collision-preventing oil well pump according to claim 1, characterized in that: The protective cover (20) insulates the box (10) and the deceleration shaft (40).

3. The fixed valve of claim 1, wherein: The magnetic resistance segment (50) prevents the deceleration shaft (40) from magnetizing the ball (60).

4. The anti-impact fixed valve of the pump according to claim 1, characterized in that: The deceleration ring (30) and the magnetic resistance segment (50) are non-magnetic but conductive.

5. The fixed valve of claim 1, wherein: The deceleration shaft (40) can slide up and down inside the deceleration ring (30), the deceleration shaft (40) drives the ball (60) to move synchronously when sliding.

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