Composite bridge plug

Abstract

The utility model discloses a kind of composite bridge plug, it is related to composite bridge plug technical field.The utility model, including center rubber cylinder and two joints, further including connecting rod, connecting rod is installed in center rubber cylinder, the both ends of connecting rod are fixedly installed with threaded rod, two joints are respectively threadedly installed on two threaded rods, rectangular slot is opened in joint, annular groove is opened in connecting rod and located in rectangular slot, two limit blocks that cooperate with annular groove are slidably installed in rectangular slot, two sliding slots are opened in the top and bottom of rectangular slot in joint, sliding rod fixed with limit block is slidably installed in sliding slot, pull spring fixed with the inner wall of sliding slot is fixedly installed on sliding rod, two fixed rings are fixedly installed on center rubber cylinder, the utility model, ensure that bolt can extrude limit block displacement and enter into annular groove, limit block cannot be inserted into annular groove due to annular groove deviation, it is more convenient and reliable to install.

Description

Technical Field

[0001] This utility model relates to the field of composite bridge plug technology, specifically to a composite bridge plug. Background Technology

[0002] Bridge plugs are downhole sealing tools used in oilfields. They are mainly used for stratified operations in oil and water wells and can seal the lower well section during construction. The main material is metal, and they are commonly manufactured using metal materials or semi-composite materials.

[0003] For example, Chinese patent CN218780330U discloses a composite material drillable bridge plug, including a central rubber cylinder and two connecting tubes connected to the two ends of the central rubber cylinder; a connecting mechanism threadedly connected to the inner wall of the connecting tubes; enabling multiple connections of the drillable bridge plug and improving the stability of the drillable bridge plug connection. The connecting mechanism includes two threaded tubes, which are threadedly connected to the first threaded grooves opened on the inner walls of the two connecting tubes; the outer wall of the connecting tubes is provided with a threaded wall. This application connects the central rubber cylinder to the connecting tubes, and uses the threaded tubes to connect with the threaded grooves in the connecting holes to form a threaded connection structure. It also uses the threaded holes in the upper and lower connectors to connect with the threaded walls on the outer walls of the connecting tubes to form a double threaded connection structure. By forming a double connection structure between the central rubber cylinder and the upper and lower connectors, the connection structure becomes more stable and secure, and less prone to shaking or loosening.

[0004] The aforementioned patent has the following problems: This patent has some drawbacks in its use, such as: when the upper and lower connectors are installed, the threaded holes on the upper and lower connectors are prone to deviation from the corresponding second and third threaded grooves. This will cause one end of the fixing bolt to be unable to be threaded into the corresponding second and third threaded grooves, making it inconvenient to use. Therefore, a composite bridge plug is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a composite bridge plug in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model specifically adopts the following technical solution: A composite bridge plug includes a central rubber sleeve and two connectors, and a connecting rod. The connecting rod is installed inside the central rubber sleeve, and threaded rods are fixedly installed at both ends of the connecting rod. The two connectors are respectively threaded onto the two threaded rods. A rectangular groove is formed inside the connector, and an annular groove is formed on the connecting rod within the rectangular groove. Two limiting blocks that are inserted into the annular groove are slidably installed in the rectangular groove. Two sliding grooves are formed inside the connector at the top and bottom of the rectangular groove. A sliding rod that is fixed to the limiting block is slidably installed in the sliding groove. A tension spring that is fixed to the inner wall of the sliding groove is fixedly installed on the sliding rod. Two fixing rings are fixedly installed on the central rubber sleeve. Threaded tubes that are fixed to the connector are threadedly installed inside the fixing rings. Two bolts that contact the corresponding limiting blocks are threadedly installed inside the connector.

[0007] Furthermore, a guide rod is fixedly installed inside the groove and located in the tension spring, one end of the guide rod extending into the slide rod, and the slide rod and the guide rod are slidably connected.

[0008] Furthermore, the two limiting blocks are arranged symmetrically.

[0009] Furthermore, the joint is movably connected to the connecting rod, and the diameter of the threaded rod is smaller than the diameter of the connecting rod.

[0010] Furthermore, the two sliding rods on the limiting block are located on both sides of the bolt.

[0011] Furthermore, the rectangular groove is connected to the corresponding sliding groove.

[0012] The beneficial effects of this utility model are as follows: This composite bridge plug, through the cooperation of a connecting rod, threaded rod, sliding rod, bolt, limiting block, rectangular groove, sliding groove, tension spring, guide rod, annular groove and threaded tube, ensures that the bolt can squeeze the limiting block to move and enter the annular groove. The annular groove can improve the insertion range and will not cause the limiting block to fail to be inserted into the annular groove due to annular groove offset, making the installation more convenient and reliable. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is one of the structural diagrams of the internal structure of the connector of this utility model; Figure 3 This is the second schematic diagram of the internal structure of the connector of this utility model; Figure 4 This is a utility model Figure 3 Enlarged structural diagram at point A; Figure 5 This is a cross-sectional structural diagram of the connector of this utility model; Figure 6 This is an exploded structural diagram of the limiting block and annular groove of this utility model; Reference numerals: 1. Center rubber cylinder; 2. Fixing ring; 3. Connector; 4. Connecting rod; 5. Threaded rod; 6. Slide rod; 7. Bolt; 8. Limiting block; 9. Rectangular groove; 10. Slide groove; 11. Tension spring; 12. Guide rod; 13. Annular groove; 14. Threaded tube. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0015] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0016] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0017] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power, and the main controller can be a conventional known device such as a computer that can control it.

[0018] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They 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. Therefore, they should not be construed as limitations on this utility model.

[0019] like Figures 1 to 6As shown, a composite bridge plug includes a central rubber cylinder 1 and two connectors 3, as well as a connecting rod 4. The connecting rod 4 is installed inside the central rubber cylinder 1, and threaded rods 5 are fixedly installed at both ends of the connecting rod 4. The two connectors 3 are respectively threaded onto the two threaded rods 5. A rectangular groove 9 is opened inside the connector 3. An annular groove 13 is opened on the connecting rod 4 and located inside the rectangular groove 9. Two limiting blocks 8 that are inserted into and cooperate with the annular groove 13 are slidably installed in the rectangular groove 9. Two sliding grooves 10 are opened inside the connector 3 at the top and bottom of the rectangular groove 9. A sliding rod 6 that is fixed to the limiting block 8 is slidably installed in the sliding groove 10. A tension spring 11 that is fixed to the inner wall of the sliding groove 10 is fixedly installed on the sliding rod 6. Two fixing rings 2 are fixedly installed on the central rubber cylinder 1. A threaded tube 14 that is fixed to the connector 3 is threadedly installed inside the fixing ring 2. Two bolts 7 that contact the corresponding limiting blocks 8 are threadedly installed inside the connector 3.

[0020] More specifically, during use, the operator can fit one of the connectors 3 onto the threaded rod 5, and then rotate the connector 3. Under the action of the thread, the connector 3 will be threaded onto the threaded rod 5. At the same time, the connector 3 will rotate on the connecting rod 4. At this time, the connector 3 will move towards the central rubber cylinder 1, so that the threaded tube 14 can be threaded into the fixing ring 2. The connector 3 will contact one end of the central rubber cylinder 1. Then, one end of the bolt 7 can be threaded into the connector 3, and then the bolt 7 can be rotated. The bolt 7 will rotate and move downward until the bolt 7 contacts the limiting block 8. During the continued rotation and displacement of the bolt 7, the limiting block 8 will be moved. The limiting block 8 will move the two sliding rods 6. The sliding rods 6 will slide on the corresponding guide rod 12. The tension spring 11 will be stretched by the tension of the sliding rod 6 until the limiting block 8 enters the annular groove 13 on the connecting rod 4, so as to further fix the position of the connector 3. Through the above operation, the two connectors 3 can be installed at both ends of the connector 3 respectively.

[0021] like Figure 3 and Figure 4 As shown, a guide rod 12 is fixedly installed inside the slide groove 10 and located in the tension spring 11. One end of the guide rod 12 extends into the slide rod 6, and the slide rod 6 is slidably connected to the guide rod 12.

[0022] More specifically, under the action of the guide rod 12, the displacement of the slide rod 6 can be guided, and at the same time, the extension and retraction of the tension spring 11 can be made more stable.

[0023] like Figure 6 As shown, the two limit blocks 8 are arranged symmetrically.

[0024] More specifically, this ensures that the two limiting blocks 8 can enter the corresponding annular groove 13, thereby limiting the position of the connector 3.

[0025] like Figure 2 As shown, the connector 3 is movably connected to the connecting rod 4, and the diameter of the threaded rod 5 is smaller than the diameter of the connecting rod 4.

[0026] More specifically, this ensures that connector 3 can move on connecting rod 4, and that threaded rod 5 can be threaded into connector 3.

[0027] like Figure 3 As shown, the two sliding rods 6 on the limiting block 8 are located on both sides of the bolt 7.

[0028] More specifically, this ensures that bolt 7 can be displaced between the two slide bars 6 and compress the displacement of limit block 8.

[0029] like Figure 5 As shown, the rectangular groove 9 is connected to the corresponding sliding groove 10.

[0030] More specifically, this ensures that the slide rod 6 inside the slide groove 10 can enter the rectangular groove 9.

[0031] In summary: During use, the operator can place one of the connectors 3 onto the threaded rod 5, and then rotate the connector 3. Under the action of the thread, the connector 3 will be threaded onto the threaded rod 5. At the same time, the connector 3 will rotate on the connecting rod 4. At this time, the connector 3 will move towards the central rubber cylinder 1, so that the threaded tube 14 can be threaded into the fixing ring 2. The connector 3 will contact one end of the central rubber cylinder 1. Then, one end of the bolt 7 can be threaded into the connector 3, and then the bolt 7 can be rotated. The bolt 7 will rotate and move downward until the bolt 7 contacts the limiting block 8. During the continued rotation and displacement of the bolt 7, the limiting block 8 will be moved. The limiting block 8 will move the two sliding rods 6. The sliding rods 6 will slide on the corresponding guide rod 12. The tension spring 11 will be stretched by the tension of the sliding rod 6 until the limiting block 8 enters the annular groove 13 on the connecting rod 4, thereby further fixing the position of the connector 3. Through the above operation, the two connectors 3 can be installed at both ends of the connector 3 respectively.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A composite bridge plug, comprising a central rubber sleeve (1) and two connectors (3), characterized in that, It also includes a connecting rod (4), which is installed inside the central rubber cylinder (1). Both ends of the connecting rod (4) are fixedly installed with threaded rods (5). The two connectors (3) are respectively threaded onto the two threaded rods (5). A rectangular groove (9) is opened in the connector (3). An annular groove (13) is opened on the connecting rod (4) and located in the rectangular groove (9). Two limiting blocks (8) that are inserted into the annular groove (13) are slidably installed in the rectangular groove (9). Two sliding grooves (10) are opened at the top and bottom of the rectangular groove (9). A sliding rod (6) fixed to the limiting block (8) is slidably installed in the sliding groove (10). A tension spring (11) fixed to the inner wall of the sliding groove (10) is fixedly installed on the sliding rod (6). Two fixing rings (2) are fixedly installed on the central rubber cylinder (1). A threaded tube (14) fixed to the connector (3) is installed in the thread of the fixing ring (2). Two bolts (7) that contact the corresponding limiting block (8) are installed in the thread of the connector (3).

2. The composite bridge plug according to claim 1, characterized in that, A guide rod (12) is fixedly installed in the groove (10) and in the tension spring (11). One end of the guide rod (12) extends into the slide rod (6), and the slide rod (6) is slidably connected to the guide rod (12).

3. A composite bridge plug according to claim 1, characterized in that, The two limiting blocks (8) are arranged symmetrically.

4. A composite bridge plug according to claim 1, characterized in that, The connector (3) is movably connected to the connecting rod (4), and the diameter of the threaded rod (5) is smaller than the diameter of the connecting rod (4).

5. A composite bridge plug according to claim 1, characterized in that, The two sliding rods (6) on the limiting block (8) are located on both sides of the bolt (7).

6. A composite bridge plug according to claim 1, characterized in that, The rectangular groove (9) is connected to the corresponding sliding groove (10).

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