An external power wellhead protector cap

Abstract

The utility model relates to oilfield safety protection equipment technical field, concretely relates to a kind of external power wellhead protective cap, comprising: main body, one end of the main body is equipped with upper cover, the other end is equipped with sheath, the upper cover is equipped with socket, the sheath is equipped with driving element inside;Lock rod push head, be located in the main body, and the bottom of the lock rod push head is connected with the driving element;Lock rod structure, be located in the main body inside close to one end of the upper cover, and with the lock rod push head abutment;Stroke blocking structure, be located in the main body, and with the lock rod push head connection.The external power wellhead protective cap, structure size is small, light in weight, convenient to take out and pack, and maintenance is convenient, and manufacturing cost is low.Driving element drives lock rod push head, and the well locking of lock rod structure is realized and is unlocked, so that well locking and unlocking well operation are reliable, and cooperate with portable lithium battery external power and socket connection, so that charging is convenient, portable.

Description

Technical Field

[0001] This utility model relates to the technical field of oilfield safety protection equipment, specifically to an external power supply wellhead protective cap. Background Technology

[0002] In current oilfield production operations, scheduled retrieval operations account for a large proportion. Before each retrieval operation, the wellhead protection device needs to be opened, and after each retrieval operation, the wellhead needs to be protected.

[0003] Conventional wellhead protection measures typically involve valves and well sealers, but these devices are bulky and require cranes or multiple operators, which is time-consuming and labor-intensive. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is to overcome the problem that the existing technology usually uses valves and well sealers for protection, but the equipment is relatively bulky and requires cranes or multiple people to operate in actual operation, which is time-consuming and labor-intensive. Thus, an external power supply wellhead protective cap is provided.

[0005] To solve the above-mentioned technical problems, this utility model provides an external power supply wellhead protective cap, comprising: a main body, one end of which is provided with a top cover and the other end with a protective sleeve, the top cover being provided with a socket and the protective sleeve containing a driving component; a locking rod push head, disposed within the main body, with the bottom of the locking rod push head connected to the driving component; a locking rod structure, disposed within the main body near the top cover and abutting against the locking rod push head; and a stroke blocking structure, disposed within the main body and connected to the locking rod push head.

[0006] Furthermore, the inner wall of the main body is provided with a protrusion, the protrusion is provided with a sliding groove, the guide screw is provided in the sliding groove and connected to the locking rod push head.

[0007] Furthermore, the locking rod structure includes: a locking rod seat, of which there are two, symmetrically arranged inside the main body; a locking rod member, disposed inside the locking rod seat, the locking rod member extending out of the locking rod seat and the main body, and one end abutting against the locking rod push head, and an elastic member sleeved on the locking rod member.

[0008] Furthermore, the locking rod seat is fixed to the main body by a locking structure.

[0009] Furthermore, the cross-section of the locking rod seat is U-shaped.

[0010] Furthermore, the travel blocking structure includes: two travel stops, which are staggered on the inner wall of the main body; and two travel switches, which are staggered on the locking rod push head, with the travel switches corresponding to the travel stops.

[0011] Furthermore, the driving component is provided with a lead screw, which is connected to the locking rod push head.

[0012] Furthermore, the socket is provided with a connecting wire, which connects to the drive component.

[0013] Furthermore, the bottom of the sheath is provided with a lower cover, which is connected to the sheath by a locking structure.

[0014] Furthermore, rubber rings are provided on the side walls of both the main body and the top cover.

[0015] The technical solution of this utility model has the following advantages: 1. The external power supply wellhead protective cap provided by this utility model includes: a main body, one end of which is provided with a top cover and the other end with a protective sleeve, the top cover being provided with a socket and the protective sleeve containing a driving component; a locking rod push head, disposed within the main body, with the bottom of the locking rod push head connected to the driving component; a locking rod structure, disposed within the main body near the top cover and abutting against the locking rod push head; and a stroke blocking structure, disposed within the main body and connected to the locking rod push head.

[0016] By installing a top cover on the main body, the main body can be protected. A protective sleeve is installed at the other end of the main body, which facilitates the installation of the drive component inside the sleeve and protects the drive component. At the same time, a locking rod pusher is installed inside the main body. The locking rod structure abuts against the locking rod pusher. The rotation of the drive component drives the locking rod pusher to move up and down, thereby realizing the locking and unlocking of the locking rod structure. During the locking and unlocking process, the position of the locking rod pusher can be determined by the stroke blocking structure, thereby realizing the automatic locking and unlocking functions.

[0017] This external power supply wellhead protective cap is small in size, lightweight, easy to remove and install, convenient to maintain, and low in manufacturing cost. A drive mechanism powers the locking rod pusher, enabling reliable locking and unlocking of the wellhead. It connects to a portable lithium battery power supply via a socket, making charging convenient and easy to carry. At the oil wellhead retrieval site, one person can easily and quickly operate the system manually. After oil production is completed, the external power supply wellhead protective cap can be promptly installed back onto the wellhead, achieving an environmentally friendly, safe, and reliable protective effect.

[0018] 2. The external power supply wellhead protective cap provided by this utility model has a protrusion on the inner wall of the main body, and a sliding groove on the protrusion. A guide screw is disposed in the sliding groove and connected to the locking rod push head. The protrusion facilitates the installation of the guide screw in the sliding groove. Simultaneously, the guide screw passes through the locking rod push head, and when the driving component pushes the locking rod push head to move up and down, the guide screw plays a guiding role.

[0019] 3. The external power supply wellhead protective cap provided by this utility model has rubber rings on the side walls of both the main body and the upper cover. These rubber rings provide a seal when the main body is connected to the protective cap seat.

[0020] The utility model summary section is provided to present the chosen concepts in a simplified form, which will be further described in the detailed embodiments below. The utility model summary section is not intended to identify essential or essential features of this disclosure, nor is it intended to limit the scope of this disclosure. Attached Figure Description

[0021] 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.

[0022] Figure 1 A schematic diagram of the structure of the external power supply wellhead protective cap provided by this utility model; Figure 2 A schematic diagram of the structure of the protective cap holder provided by this utility model; Figure 3 A schematic diagram of the structure for installing the external power supply wellhead protective cap provided by this utility model.

[0023] Explanation of reference numerals in the attached figures: 1. Main body; 2. Top cover; 3. Sheath; 4. Socket; 5. Drive component; 6. Locking rod push head; 7. Protrusion; 8. Slide groove; 9. Guide screw; 10. Locking rod seat; 11. Locking rod component; 12. Elastic component; 13. Locking structure; 14. Stroke stop; 15. Limit switch; 16. Lead screw; 17. Connecting wire; 18. Bottom cover; 19. Rubber ring; 20. Protective cap seat; 21. Locking groove; 22. Casing coupling; 23. Oil well casing. Detailed Implementation

[0024] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this disclosure. Therefore, the drawings and description are to be considered exemplary in nature and not restrictive.

[0025] The preferred embodiments of this disclosure are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0026] Please see Figures 1 to 3 As shown, this utility model provides an external power supply wellhead protective cap, comprising: a main body 1, one end of which is provided with a top cover 2 and the other end with a protective sleeve 3, the top cover 2 being provided with a socket 4, and the protective sleeve 3 containing a driving component 5; a locking rod push head 6, disposed within the main body 1, with the bottom of the locking rod push head 6 connected to the driving component 5; a locking rod structure, disposed within the main body 1 near the top cover 2, and abutting against the locking rod push head 6; and a stroke blocking structure, disposed within the main body 1, and connected to the locking rod push head 6.

[0027] By setting a top cover 2 on the main body 1, the main body 1 can be protected by the top cover 2. A protective sleeve 3 is set at the other end of the main body 1. The setting of the protective sleeve 3 facilitates the installation of the driving component 5 inside the protective sleeve 3 and uses the protective sleeve 3 to protect the driving component 5. At the same time, a locking rod push head 6 is set inside the main body 1. The locking rod structure abuts against the locking rod push head 6. By rotating the driving component 5, the locking rod push head 6 is driven to move up and down, thereby realizing the locking and unlocking of the locking rod structure. During the locking and unlocking process, in conjunction with the stroke blocking structure, the position of the locking rod push head 6 can be determined, thereby realizing the automatic locking and unlocking functions.

[0028] This external power supply wellhead protective cap is small in size, lightweight, easy to remove and install, convenient to maintain, and low in manufacturing cost. The drive unit 5 drives the locking rod pusher 6, enabling the locking and unlocking of the locking rod structure, ensuring reliable well locking and unlocking operations. It connects to a portable lithium battery external power supply socket 4 for convenient charging and easy portability. At the oil wellhead retrieval site, one person can easily and quickly operate the system manually. After oil production is completed, the external power supply wellhead protective cap can be promptly installed on the wellhead, achieving an environmentally friendly, safe, and reliable protective effect.

[0029] In some optional embodiments, the inner wall of the main body 1 is provided with a protrusion 7, the protrusion 7 is provided with a groove 8, the guide screw 9 is provided in the groove 8 and connected to the locking rod push head 6.

[0030] The protrusion 7 facilitates the installation of the guide screw 9 in the groove 8 of the protrusion 7. At the same time, the guide screw 9 passes through the locking rod push head 6. When the driving member 5 pushes the locking rod push head 6 to move up and down, the guide screw 9 plays a guiding role.

[0031] In some optional embodiments, the locking rod structure includes: a locking rod seat 10, having two locking rod seats 10 symmetrically disposed inside the main body 1; a locking rod member 11 disposed inside the locking rod seat 10, the locking rod member 11 extending out of the locking rod seat 10 and the main body 1, and one end abutting against the locking rod push head 6, and an elastic member 12 sleeved on the locking rod member 11.

[0032] The locking rod seat 10 facilitates the installation and fixation of the locking rod 11 within the locking rod seat 10. The locking rod seat 10 provides an installation position for the locking rod 11. At the same time, an elastic element 12 is fitted onto the locking rod 11. When unlocking and opening the well, the locking rod push head 6 can be used to move downwards, and the locking rod 11 will retract into the main body 1 due to the action of the elastic element 12, thereby realizing the unlocking and opening of the well.

[0033] The locking rod seat 10 is fixed to the main body 1 by a locking structure 13; the bottom of the protective sleeve 3 is provided with a lower cover 18, and the lower cover 18 is connected to the protective sleeve 3 by the locking structure 13.

[0034] The locking structure 13 is used to symmetrically fix the two locking rod seats 10 inside the main body 1 to prevent the locking rod seats 10 from moving; at the same time, the locking structure 13 can also be used to fix the lower cover 18 to the bottom of the protective sleeve 3, that is, the lower cover 18 is used to protect the bottom of the protective sleeve 3.

[0035] Specifically, the locking structure 13 is a screw.

[0036] In this embodiment, the lock rod seat 10 has a U-shaped cross section; the U-shaped lock rod seat 10 facilitates the placement of the lock rod 11 and the spring inside the lock rod seat 10, and the two end faces of the lock rod seat 10 are in close contact with the inner wall of the main body 1 to prevent the lock rod 11 and the spring from slipping out, thus ensuring the installation stability of the lock rod 11 and the spring.

[0037] In some optional embodiments, the travel blocking structure includes: two travel stops 14, which are staggered on the inner wall of the main body 1; and two travel switches 15, which are staggered on the locking rod push head 6, with the travel switches 15 corresponding to the travel stops 14.

[0038] There are two travel stop levers 14 and travel switches 15, respectively located on the left and right sides of the locking rod push head 6. Each travel switch 15 corresponds to one travel stop lever 14. When the driving member 5 drives the locking rod push head 6 upward, the right travel switch 15 also moves upward with the locking rod push head 6. When the right travel switch 15 touches the right travel stop lever 14, the right locking rod is pushed upward to its final position, thus achieving the locking function. When the driving member 5 drives the locking rod push head 6 downward, the left travel switch 15 also moves downward with the locking rod push head 6. When the left travel switch 15 touches the left travel stop lever 14, the left locking rod is pushed downward to its final position. The locking rod 11 retracts into the main body 1 under the action of the elastic member 12, thus achieving the unlocking and opening function.

[0039] Specifically, the elastic element 12 is a spring.

[0040] In this embodiment, the driving component 5 is a motor, and a lead screw 16 is provided on the driving component 5. The lead screw 16 is connected to the locking rod push head 6. The rotation of the driving component 5 can drive the lead screw 16 to rotate, thereby driving the locking rod push head 6 to achieve lifting and lowering movement.

[0041] The socket 4 is equipped with a connecting line 17, which connects to the drive unit 5. The connection between the socket 4 and the drive unit 5 is achieved through the setting of the connecting line 17. At the same time, the socket 4 can be connected to an external power source, which is a portable lithium battery, thereby realizing the convenience of the external power source wellhead protective cap.

[0042] In this embodiment, both the main body 1 and the upper cover 2 are provided with rubber rings 19 on their side walls. These rubber rings 19 provide a seal when the main body 1 is connected to the protective cap seat 20.

[0043] The specific working process of the external power supply wellhead protective cap: When the driving component 5 drives the locking rod push head 6 to move upward, the right limit switch 15 also moves upward with the locking rod push head 6. When the right limit switch 15 touches the right limit stop bar 14, the right locking rod is pushed upward to the position, and the locking rod push head 6 pushes the locking rod component 11 out and locks it in the locking groove 21 of the protective cap seat 20, thus realizing the function of locking the well. When the drive unit 5 drives the locking rod push head 6 to move downward, the left limit switch 15 also moves downward with the locking rod push head 6. When the left limit switch 15 touches the left limit stop bar 14, the left locking rod is pushed downward to the position. The locking rod 11 retracts into the main body 1 by the action of the elastic member 12, thus realizing the function of unlocking and opening the well.

[0044] How to install a wellhead protective cap and lock the well: 1. On site, the protective cap seat 20 is installed into the internal thread of the casing coupling 22 through the external thread, thereby realizing the threaded connection between one end of the protective cap seat 20 and the casing coupling 22, and the other end of the casing coupling 22 is threaded with the oil well casing 23; 2. Insert the external power supply wellhead protective cap into the locking groove 21 of the protective cap seat 20; 3. Connect the external power cord plug to socket 4 on the upper end of the external power wellhead protective cap; 4. After operating the external power switch to the "motor reverse" position for 27 seconds, the protective cap will lock the well.

[0045] Procedure for removing the wellhead protective cap and unlocking the well: 1. On-site, plug the external power supply cord into socket 4 on the upper end of the external power supply manhole cover; 2. After operating the external power switch to the "motor forward" position for 27 seconds, the wellhead protective cap will unlock; 3. Use the handle at the top of the external power supply wellhead protective cap to lift the wellhead protective cap out of the wellhead; 4. Remove the protective cap 20 to unlock and open the well.

[0046] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A protective cap for an external power supply wellhead, characterized in that, include: The main body (1) has a top cover (2) at one end and a protective sleeve (3) at the other end. The top cover (2) has a socket (4) and the protective sleeve (3) has a drive component (5). Locking rod push head (6) is located inside the main body (1), and the bottom of the locking rod push head (6) is connected to the drive member (5); The locking rod structure is located inside the main body (1) at one end near the upper cover (2) and abuts against the locking rod push head (6); The travel blocking structure is located inside the main body (1) and is connected to the locking rod push head (6).

2. The external power supply wellhead protective cap according to claim 1, characterized in that, The inner wall of the main body (1) is provided with a protrusion (7), and the protrusion (7) is provided with a groove (8). The guide screw (9) is located in the groove (8) and connected to the locking rod push head (6).

3. The external power supply wellhead protective cap according to claim 2, characterized in that, The locking bar structure includes: Locking bar seat (10), there are two locking bar seats (10), which are symmetrically arranged inside the main body (1); Locking rod (11) is located inside locking rod seat (10). Locking rod (11) extends out of locking rod seat (10) and main body (1), and one end abuts against locking rod push head (6). Elastic member (12) is sleeved on locking rod (11).

4. The external power supply wellhead protective cap according to claim 3, characterized in that, The locking rod seat (10) is fixed to the main body (1) by the locking structure (13).

5. The external power supply wellhead protective cap according to claim 3, characterized in that, The cross-section of the locking bar seat (10) is U-shaped.

6. The external power supply wellhead protective cap according to any one of claims 1-3, characterized in that, The path-blocking structure includes: There are two travel stops (14), which are staggered on the inner wall of the main body (1); There are two limit switches (15), which are alternately arranged on the locking rod push head (6). The limit switches (15) are set in relation to the limit stop (14).

7. The external power supply wellhead protective cap according to claim 6, characterized in that, The drive unit (5) is provided with a lead screw (16), which is connected to the locking rod push head (6).

8. The external power supply wellhead protective cap according to claim 7, characterized in that, The socket (4) is provided with a connecting wire (17), which is connected to the drive unit (5).

9. The external power supply wellhead protective cap according to claim 1, characterized in that, The bottom of the sheath (3) is provided with a lower cover (18), which is connected to the sheath (3) by a locking structure (13).

10. The external power supply wellhead protective cap according to claim 1, characterized in that, Both the main body (1) and the top cover (2) are provided with rubber rings (19).

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