Auxiliary device for mounting snap spring and gland at lower end of submersible motor for well

Abstract

The utility model provides an auxiliary device for installing a snap spring and a gland at the lower end of a submersible motor for a well, which comprises a gland base, the gland is installed in an inner cavity of the gland base, the gland base is provided with a clamping groove and a guide sleeve which are used for installing the snap spring, and a bottom end opening of the guide sleeve is matched with a top end opening of the gland base. The utility model relates to the technical field of the auxiliary device for installing the clamp spring and the gland, the clamp spring is pushed by the pressure head to gradually reduce the diameter along the conical inner wall of the guide sleeve and move downwards, and the clamp spring is contacted with the gland in the gland base and then is separated from the conical inner wall of the guide sleeve. The telescopic part is used for providing power, the guide sleeve is used for restraining the installation position of the clamp spring, so that the assembling efficiency between the clamp spring and the gland in the gland base is improved, and the labor intensity is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary devices for installing retaining rings and pressure caps, and in particular to an auxiliary device for installing retaining rings and pressure caps at the lower end of a well submersible motor. Background Technology

[0002] Submersible motors for wells are used to drive submersible pumps to extract groundwater in deep wells. During the production process of submersible motors, when assembling the pressure cap, the base (product part) is placed in the positioning ring on the machine frame workbench. The part is confirmed to be in a vertical position. The pressure regulating bladder (product part) is placed in the designated position inside the base (product part). The pressure cap (product part) is taken out, dipped in soapy water, and placed at the end of the pressure regulating bladder (product part). Then, one person uses snap ring pliers to clamp the retractable snap ring and place it at the opening of the position to be installed. Another person uses a non-rebound hammer to repeatedly tap it to make it enter the groove.

[0003] The retaining ring is an important component that prevents the pressure cap from coming off. During assembly, the retaining ring needs to be connected to the retaining groove of the pressure cap base. Because the retaining ring is elastic, the installation process is labor-intensive and inefficient. Utility Model Content

[0004] The purpose of this utility model is to provide an auxiliary device for installing the lower end retaining spring and pressure cap of a submersible motor for wells. This auxiliary device solves the problem that during assembly, the retaining spring needs to be connected to the retaining groove of the pressure cap base, and the installation process of the retaining spring is labor-intensive due to its elasticity.

[0005] This utility model provides an auxiliary device for installing a retaining spring and a pressure cap at the lower end of a submersible well motor, including a pressure cap base. A pressure cap is installed in the inner cavity of the pressure cap base, and the pressure cap base has a slot for installing the retaining spring. The auxiliary device for installing the retaining spring and pressure cap at the lower end of the submersible well motor includes:

[0006] A cover base support frame, wherein the cover base support frame has an installation groove that matches the bottom end of the cover base;

[0007] The telescopic component is fixedly connected to the bearing frame of the pressure cover base, and a pressure head is fixedly connected to the output end of the telescopic component. The pressure head and the pressure cover base are located on the same axis.

[0008] The guide sleeve is connected to the pressure cap base support frame via a connector. The guide sleeve and the pressure head are located on the same axis. The bottom opening of the guide sleeve is adapted to the top opening of the pressure cap base. The guide sleeve has a tapered cavity that is wider at the top and narrower at the bottom.

[0009] The inner cavity of the guide sleeve is provided with a snap ring support member, which is used to support the snap ring and keep the snap ring in a horizontal state.

[0010] Preferably, the retaining ring support includes:

[0011] A cylindrical tube, which is fixedly connected in the circular hole of the guide sleeve, and the cylindrical tubes are distributed circumferentially along the guide sleeve;

[0012] A spherical top pin is inserted into the open end of the cylinder, and the spherical portion of the spherical top pin extends into the inner cavity of the guide sleeve.

[0013] A first elastic element is located in the cavity of the cylinder, with one end of the first elastic element abutting against the cylinder and the other end of the first elastic element abutting against the spherical top pin.

[0014] Preferably, the connector includes:

[0015] A limiting bracket is fixedly connected to the pressure cap base support frame, and the limiting bracket is provided with a U-shaped groove that is adapted to the pressure cap base;

[0016] Two sliding rods are symmetrically distributed based on the U-shaped groove of the limiting bracket. The top ends of both sliding rods are fixedly connected to the limiting bracket. A connecting plate is slidably connected to the outer periphery of each sliding rod. The end of the connecting plate away from the sliding rod is fixedly connected to the guide sleeve.

[0017] The slide bar is also equipped with a reset component, which is used to drive the connecting plate to move upward along the slide bar.

[0018] Preferably, the reset element includes a limiting plate and a second elastic element;

[0019] The limiting plate is fixedly connected to the bottom end of the slide rod, and the second elastic element is inserted into the outer periphery of the slide rod. The second elastic element is located between the limiting plate and the connecting plate.

[0020] Preferably, the limiting plate is shaped.

[0021] Preferably, the second elastic element is a compression spring.

[0022] Preferably, the cap base support frame is equipped with a clamping assembly for clamping the outer periphery of the cap base;

[0023] The clamping assembly includes:

[0024] The mounting shell is fixedly connected to the strip groove of the pressure cover base support frame, and the mounting shell has a limit groove.

[0025] A double-ended threaded rod is connected to the mounting housing via a bearing. The double-ended threaded rod is equipped with two slides, and a support rod is fixedly connected to the outer periphery of each of the two slides. The support rod is adapted to the limiting groove of the mounting housing.

[0026] Two clamping plates are fixedly connected to the support rod, and the two clamping plates are symmetrically distributed based on the pressure cap base.

[0027] Preferably, the clamping plate is machined with an arc-shaped groove, which is adapted to the outer diameter of the pressure cap base.

[0028] Preferably, a knob is fixedly connected to one end of the double-threaded rod extending out of the mounting shell, and the knob is machined with striped patterns.

[0029] Preferably, the telescopic component is a cylinder.

[0030] This utility model provides an auxiliary device for installing the lower end retaining spring and pressure cap of a well submersible motor:

[0031] By using the combined use of the pressure cap base support frame, telescopic component, pressure head, guide sleeve, and connector, the retaining ring is placed in the guide sleeve. The output end of the telescopic component drives the pressure head downward to contact the retaining ring. Under the push of the pressure head, the retaining ring gradually contracts in diameter and moves downward along the conical inner wall of the guide sleeve, contacting the pressure cap in the pressure cap base. Then, it disengages from the conical inner wall of the guide sleeve and enters the interior of the pressure cap base. The retaining ring springs open into the groove. The telescopic component provides power, and the guide sleeve constrains the installation position of the retaining ring, thereby improving the assembly efficiency between the retaining ring and the pressure cap in the pressure cap base and reducing labor intensity. Attached Figure Description

[0032] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the structure of this utility model;

[0034] Figure 2 for Figure 1 Structural diagram of the intermediate pressure cover base support frame, telescopic component, pressure head, and guide sleeve;

[0035] Figure 3 for Figure 1 Sectional view of the guide sleeve;

[0036] Figure 4 for Figure 1 A schematic diagram of the structure of the middle limit bracket, slide rod, connecting plate, limit plate, and second elastic element;

[0037] Figure 5 for Figure 1 Partial sectional view of the mounting shell.

[0038] Explanation of reference numerals in the attached figures:

[0039] 1-Pressure cap base, 21-Pressure cap base support frame, 22-Telescopic component, 221-Pressure head, 23-Guide sleeve, 231-Snap ring support component, 231a-Cylinder, 231b-Spherical top pin, 231c-First elastic component, 24-Connector, 241-Limit bracket, 242-Slide rod, 243-Connecting plate, 244-Reset component, 244a-Limit plate, 244b-Second elastic component, 3-Clamping assembly, 31-Mounting shell, 32-Double-ended threaded rod, 321-Knob, 33-Slide seat, 331-Support rod, 34-Clamping plate. Detailed Implementation

[0040] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0041] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0042] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0043] In this embodiment, as Figure 1 and Figure 2 As shown, an auxiliary device for installing a retaining spring and a pressure cap at the lower end of a submersible well motor includes a pressure cap base 1, with a pressure cap installed in the inner cavity of the pressure cap base 1. The pressure cap base 1 has a retaining groove for installing the retaining spring. The auxiliary device for installing the retaining spring and pressure cap at the lower end of the submersible well motor includes:

[0044] The pressure cap base support frame 21 has an installation groove that matches the bottom end of the pressure cap base 1; the telescopic member 22 is fixedly connected to the pressure cap base support frame 21, and the output end of the telescopic member 22 is fixedly connected to the pressure head 221, which is located on the same axis as the pressure cap base 1; the guide sleeve 23 is connected to the pressure cap base support frame 21 through the connector 24, and the guide sleeve 23 is located on the same axis as the pressure head 221. The bottom opening of the guide sleeve 23 matches the top opening of the pressure cap base 1, and the guide sleeve 23 has a tapered cavity that is wider at the top and narrower at the bottom; a retaining spring support member 231 is disposed in the inner cavity of the guide sleeve 23, which supports the retaining spring and keeps the retaining spring in a horizontal state.

[0045] Thus, the retaining ring is placed in the guide sleeve 23, and the telescopic component 22 is activated. The output end of the telescopic component 22 drives the pressure head 221 to descend and contact the retaining ring. The guide sleeve 23 moves down in the connector 24, and the protrusion at the bottom of the guide sleeve 23 inserts into the top opening of the pressure cap base 1. Under the push of the pressure head 221, the retaining ring gradually shrinks in diameter and descends along the conical inner wall of the guide sleeve 23. The retaining ring contacts the pressure cap in the pressure cap base 1, and then disengages from the conical inner wall of the guide sleeve 23 and enters the interior of the pressure cap base 1. Finally, the pressure cap reaches the designated installation position, and the retaining ring springs open into the groove. The telescopic component 22 provides power, and the guide sleeve 23 constrains the installation position of the retaining ring to improve the assembly efficiency between the retaining ring and the pressure cap in the pressure cap base 1.

[0046] Specifically, the pressure cap base 1 is a hollow cylinder, and a pressure regulating bladder is installed in the pressure cap base 1. The pressure regulating bladder is used to assemble the pressure cap. This is well known to those skilled in the art and will not be described in detail. The retaining spring needs to be configured in the retaining groove of the pressure cap base 1 to fix the position of the pressure cap in the pressure cap base 1. The telescopic member 22 is used to drive the pressure head 221 to move. The pressure head 221, the guide sleeve 23 and the pressure cap base 1 are located on the same axis. The guide sleeve 23 has a tapered cavity that is wider at the top and narrower at the bottom to reduce the diameter of the retaining spring. The pressure cap base support frame 21 is used to install the entire mechanism. The mounting groove machined in the pressure cap base support frame 21 is used to place the pressure cap base 1.

[0047] In some embodiments, such as Figure 4 As shown, the retaining ring support 231 includes: a cylinder 231a, which is fixedly connected in the circular hole of the guide sleeve 23 and is distributed circumferentially along the guide sleeve 23; a spherical top pin 231b, which is inserted into the open end of the cylinder 231a and the spherical part of the spherical top pin 231b extends into the inner cavity of the guide sleeve 23; and a first elastic member 231c, which is located in the cavity of the cylinder 231a, with one end of the first elastic member 231c abutting against the cylinder 231a and the other end of the first elastic member 231c abutting against the spherical top pin 231b.

[0048] Specifically, four cylinders 231a are provided (three cylinders 231a can also be designed). The spherical surface of the spherical top pin 231b is subjected to force to compress the first elastic element 231c in the cylinder 231a, so that it contracts into the cavity of the cylinder 231a.

[0049] In some embodiments, such as Figure 4 As shown, the connector 24 includes: a limiting bracket 241, which is fixedly connected to the pressure cap base support frame 21. The limiting bracket 241 has a U-shaped groove that is adapted to the pressure cap base 1; two sliding rods 242, which are symmetrically distributed based on the U-shaped groove of the limiting bracket 241. The top ends of the two sliding rods 242 are fixedly connected to the limiting bracket 241. A connecting plate 243 is slidably connected to the outer periphery of the sliding rods 242. The end of the connecting plate 243 away from the sliding rods 242 is fixedly connected to the guide sleeve 23; the sliding rods 242 are also equipped with a reset component 244, which is used to drive the connecting plate 243 to move upward along the sliding rods 242.

[0050] Specifically, the pressure cap base 1 is located in the U-shaped groove of the limiting bracket 241, and each of the two slide rods 242 is equipped with a connecting plate 243. The connecting plate 243 connects the pressure cap base 1 and the slide rods 242. The two connecting plates 243 are set to constrain the vertical movement of the pressure cap base 1.

[0051] In some embodiments, such as Figure 4As shown, the reset component 244 includes a limiting plate 244a and a second elastic component 244b; the limiting plate 244a is fixedly connected to the bottom end of the slide rod 242, and the second elastic component 244b is inserted into the outer periphery of the slide rod 242, and the second elastic component 244b is located between the limiting plate 244a and the connecting plate 243.

[0052] The limiting plate 244a is used to block the bottom end of the slide bar 242 to prevent the second elastic element 244b from separating from the slide bar 242. The two second elastic elements 244b are designed to drive the connecting plate 243 to reset.

[0053] In some embodiments, such as Figure 4 As shown, the limiting plate 244a is machined into a C-shape.

[0054] Specifically, the C-shaped design of the limiting plate 244a facilitates the connection of the bottom ends of the two slide rods 242, and the C-shaped design does not obstruct the normal up-and-down movement of the guide sleeve 23.

[0055] In some embodiments, such as Figure 4 As shown, the second elastic element 244b is a compression spring.

[0056] The second elastic element 244b is designed with a compression spring to facilitate the upward movement of the connecting plate 243 on the outer periphery of the slide bar 242.

[0057] In some embodiments, such as Figure 5 As shown, the cap base support frame 21 is equipped with a clamping assembly 3, which is used to clamp the outer periphery of the cap base 1. The clamping assembly 3 includes: a mounting shell 31, which is fixedly connected to the strip groove of the cap base support frame 21 and has a limit groove; a double-threaded rod 32, which is connected to the mounting shell 31 through a bearing and is equipped with two slides 33. Each slide 33 has a support rod 331 fixedly connected to its outer periphery and the support rod 331 is adapted to the limit groove of the mounting shell 31; and two clamping plates 34, which are fixedly connected to the support rods 331 and are symmetrically distributed based on the cap base 1.

[0058] Specifically, the slotted groove of the pressure cover base support frame 21 is used to fix the mounting shell 31. The mounting shell 31 has a rectangular cavity machined in it. The rotation of the double-threaded rod 32 can drive the two slides 33 to move towards each other. The support rod 331 is used to connect the clamping plate 34 to the slides 33.

[0059] In some embodiments, such as Figure 5 As shown, the clamping plate 34 is machined with an arc-shaped groove, which is adapted to the outer diameter of the pressure cover base 1.

[0060] The arc-shaped groove on the clamping plate 34 clamps the outer periphery of the pressure cap base 1, improving the stability of the pressure cap base 1 during use.

[0061] In some embodiments, such as Figure 5 As shown, a knob 321 is fixedly connected to one end of the double-threaded rod 32 that extends out of the mounting shell 31. The knob 321 is machined with striped patterns.

[0062] The knob 321 is used to drive the double-threaded rod 32 to rotate, and the stripes on the knob 321 are used to increase the friction between the knob and the hand.

[0063] In addition, the double-threaded rod 32 can also be connected to a motor to drive its rotation.

[0064] In some embodiments, such as Figure 2 As shown, the telescopic component 22 is a cylinder.

[0065] The telescopic component 22 is designed with a cylinder to drive the pressure head 221 to move up and down. While ensuring that the pressure head 221 can move up and down, the telescopic component 22 can also be replaced by a hydraulic rod, electric push rod or other telescopic structure.

[0066] The working principle of this application is illustrated below with a preferred embodiment:

[0067] Place the snap ring in the cavity of the guide sleeve 23. The spherical top pin 231b located in the inner cavity of the guide sleeve 23 supports the snap ring. The snap ring is in a horizontal state on the spherical top pin 231b. Then, assemble the pressure regulating bladder in the pressure cap base 1. Then, take out the pressure cap, dip it in soapy water, and place it at the end of the pressure regulating bladder. Manually press and adjust the parts to make them in a horizontal state.

[0068] Then, the pressure cap base 1 is placed in the mounting slot of the pressure cap base support frame 21. The knob 321 is turned to drive the double-headed threaded rod 32 to rotate in the mounting shell 31, so as to drive the two slides 33 to move towards each other. The support rod 331 on the slides 33 drives the two clamping plates 34 to move, and then the clamping plates 34 clamp the outer wall of the pressure cap base 1.

[0069] When the telescopic component 22 is activated, the pressure head 221 at the output end of the telescopic component 22 moves downward and contacts the retaining spring. The retaining spring passes over the spherical top pin 231b and enters the guide sleeve. As the output end of the telescopic component 22 continues to extend, the guide sleeve 23 is subjected to downward pressure, which drives the connecting plate 243 to move. The connecting plate 243 moves downward on the outer wall of the slide rod 242 and compresses the second elastic element 244b on the limiting plate 244a. At the same time, the protrusion at the bottom end of the guide sleeve 23 inserts into the top opening of the pressure cap base 1. Under the push of the pressure head 221, the retaining spring gradually shrinks in diameter and moves downward along the conical inner wall of the guide sleeve 23, contacts the pressure cap in the pressure cap base 1, and then separates from the conical inner wall of the guide sleeve 23 and enters the interior of the pressure cap base 1. Finally, the pressure cap reaches the designated installation position, and the retaining spring springs open into the groove.

[0070] As the retaining ring disengages from the guide sleeve 23, the second elastic element 244b springs open, pushing the guide sleeve 23 upwards to reset. After the retaining ring springs into its groove, the telescopic element 22 drives the pressure head 221 upwards and resets. The operator then removes the assembled component, completing one cycle. Repeating the above operations completes all assembly tasks.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An auxiliary device for installing the lower end clamp spring and gland of a well submersible motor, comprising a gland base (1) having a gland installed in the inner cavity thereof, and a clamp slot being formed in the gland base (1) for installing the clamp spring, characterized in that, the auxiliary device for installing the lower end clamp spring and gland of a well submersible motor comprises: a gland base bearing frame (21) having an installation slot being formed therein and adapted to the bottom end of the gland base (1); a telescopic member (22) being fixedly connected with the gland base bearing frame (21), and having a pressure head (221) fixedly connected at the output end thereof and located on the same axis as the gland base (1); a guide sleeve (23) being connected with the gland base bearing frame (21) through a connecting member (24), and located on the same axis as the pressure head (221), and having an upper wide and lower narrow tapered cavity being formed therein, and the bottom end opening of the guide sleeve (23) being adapted to the top end opening of the gland base (1); a clamp spring bearing member (231) being arranged in the inner cavity of the guide sleeve (23) and used for bearing the clamp spring so as to make the clamp spring in a horizontal state.

2. An auxiliary device for submersible motor lower end snap spring and gland mounting for a well as claimed in claim 1, wherein, the clamp spring bearing member (231) comprises: a cylinder (231a) being fixedly connected in the circular hole of the guide sleeve (23) and being annularly distributed along the guide sleeve (23); a spherical top pin (231b) being inserted in the opening end of the cylinder (231a) and having a spherical surface portion extending into the inner cavity of the guide sleeve (23); a first elastic member (231c) being located in the cavity of the cylinder (231a) and abutting against one end of the cylinder (231a) and the other end of the first elastic member (231c) abutting against the spherical top pin (231b).

3. An auxiliary device for submersible motor lower end snap spring and gland mounting for a well as claimed in claim 1, wherein, the connecting member (24) comprises: a limiting support (241) being fixedly connected with the gland base bearing frame (21) and having a U-shaped slot being formed therein and adapted to the gland base (1); two slide rods (242) being symmetrically distributed based on the U-shaped slot of the limiting support (241), and having top ends fixedly connected with the limiting support (241), and having a connecting plate (243) being slidably connected on the outer periphery of the slide rod (242) and having one end fixedly connected with the guide sleeve (23) and away from the slide rod (242); the slide rod (242) further comprises a reset member (244) for driving the connecting plate (243) to move upward along the slide rod (242).

4. An auxiliary device for submersible motor lower end snap spring and gland mounting for a well as claimed in claim 3, wherein, The reset member (244) comprises a limiting plate (244a) and a second elastic member (244b); The limiting plate (244a) is fixedly connected with the bottom end of the sliding rod (242), and the second elastic member (244b) is inserted on the outer periphery of the sliding rod (242), and the second elastic member (244b) is located between the limiting plate (244a) and the connecting plate (243).

5. An auxiliary device for submersible motor lower end snap spring and gland mounting for a well as claimed in claim 4, wherein, The limiting plate (244a) is processed in a C shape.

6. An auxiliary device for submersible motor lower end snap spring and gland mounting for a well as defined in claim 4, characterized in that, The second elastic member (244b) is a compression spring.

7. An auxiliary device for submersible motor lower end snap spring and gland mounting for a well as claimed in claim 1, wherein, The gland base carrier (21) is provided with a clamping assembly (3) for clamping the outer periphery of the gland base (1). The clamping assembly (3) comprises: A mounting shell (31) is fixedly connected in the strip-shaped groove of the gland base carrier (21), and the mounting shell (31) is provided with a limiting groove; A double-headed threaded rod (32) is connected with the mounting shell (31) through a bearing, and the double-headed threaded rod (32) is provided with two sliding seats (33), and the outer periphery of each sliding seat (33) is fixedly connected with a support rod (331), and the support rod (331) is matched with the limiting groove of the mounting shell (31); Two clamping plates (34) are fixedly connected with the support rod (331), and the two clamping plates (34) are symmetrically distributed based on the gland base (1).

8. An auxiliary device for submersible motor lower end snap spring and gland mounting for a well as defined in claim 7, characterized in that, The clamping plate (34) is processed with an arc-shaped groove matched with the outer diameter of the gland base (1).

9. An auxiliary device for submersible motor lower end snap spring and gland mounting for a well as defined in claim 7, characterized in that, One end of the double-headed threaded rod (32) extending out of the mounting shell (31) is fixedly connected with a knob (321), and the knob (321) is processed with a strip-shaped pattern.

10. An auxiliary device for submersible motor lower end snap spring and gland mounting for a well as defined in claim 1, characterized in that, The telescopic member (22) is a gas cylinder.

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