Dismounting tool for floating valve of drilling tool
By designing a drill float valve disassembly tool with an eccentric wrench and a counterweight, the problem of traditional disassembly tools easily damaging the female thread and spring was solved, enabling efficient and safe disassembly and replacement of the valve core, and improving the convenience and safety of operation.
Patent Information
- Application Number
- CN202520482666.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-19
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-03-19
AI Technical Summary
Traditional drill float valves are prone to damage to the female thread, seals and springs during disassembly, and are inconvenient to operate, making it difficult to efficiently and safely disassemble and replace the valve core.
Design a tool for disassembling a drill float valve, comprising an eccentric wrench body, a shaft, a counterweight, and a handle. The eccentric wrench head opens the valve cover, the eccentric groove holds the valve core, and the valve core is safely disassembled by the impact of the counterweight.
It enables efficient and safe disassembly of the valve core, avoiding damage to the spring and other components. It is easy to operate, adaptable to different operating forces and environmental requirements, and ensures the stability and safety of the disassembly process.
Smart Images
Figure CN223876947U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of drilling tool accessories, and specifically relates to a drilling tool float valve dismounting tool. BACKGROUND
[0002] The drilling tool float valve is a key tool in oil drilling, aiming to prevent blowout and well kick and ensure operation safety. It is composed of a drilling tool adapter and a float valve core assembly, and is kept open during normal drilling to ensure smooth flow of drilling fluid. Once blowout or well kick occurs, the valve cover is automatically closed to block the fluid path and prevent accidents. The working principle is based on fluid dynamics, and the drilling fluid flow drives the float valve core to rotate and quickly close the valve in emergency situations. The FZF type drilling tool float valve is a new type of internal blowout preventer produced by Guizhou Gao Feng Petroleum Machinery Co., Ltd., which is designed uniquely, opened during normal operation and quickly closed in emergency situations to ensure safety. The use of the float valve is crucial to drilling operations, ensuring safety and improving efficiency, and compatibility with drilling equipment should be considered when selecting to ensure effectiveness and reliability.
[0003] The valve core dismounting of the drilling tool float valve usually occurs in various situations such as maintenance and repair, cleaning and replacement, adaptation to different operating environments, technical upgrading and emergency handling. As the core component of the float valve, the valve core works in drilling fluid for a long time and is prone to wear, corrosion or blockage. Regular dismounting, inspection and maintenance can ensure its normal operation and prolong its service life. Impurities or solid particles in the drilling process may cause the valve core to be blocked, affecting its opening and closing functions, and the damaged valve core needs to be dismounted and cleaned or replaced. Different drilling environments require valve cores with different characteristics, such as drilling fluid properties, well depth and pressure, and the appropriate valve core should be replaced to optimize performance. New models of valve cores brought about by technological progress need to replace old valve cores to improve efficiency and safety. In emergency situations such as blowout or well kick, if the float valve fails, the valve core needs to be quickly dismounted for inspection or replacement to control the wellhead.
[0004] When the traditional drilling tool float valve needs to be dismounted and split, people will stretch a steel pipe from the inner hole of the pin end into the valve core, the steel pipe will push against the valve cover, and a hand hammer will be used to knock the steel pipe to dismount the valve core from the box end. The disadvantages are that the box end threads, seals and springs are easily damaged.
[0005] Therefore, in view of the above, the existing deficiencies are researched and improved, and a drilling tool float valve dismounting tool is provided. UTILITY MODEL CONTENT
[0006] The utility model aims at providing a drilling tool float valve dismounting tool to solve the technical problem of difficult dismounting of the drilling tool float valve in the prior art.
[0007] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:
[0008] The utility model provides a kind of drilling tool float valve dismounting tool, comprising: eccentric wrench body and drilling tool float valve body, one end of the eccentric wrench body is provided with eccentric wrench head, the outside of the eccentric wrench body is provided with eccentric groove, the lower end of the inside of the eccentric wrench body is provided with screw mouth, the screw mouth of the lower end of the inside of the eccentric wrench body is provided with rod axle outward, one side of the rod axle is provided with handle, the outside of the rod axle is provided with weight;
[0009] The inside of the drilling tool float valve body is provided with a valve core, and the two ends of the inside of the valve core are provided with valve covers.
[0010] Optionally or preferably, the outer shape of the eccentric wrench head is a conical surface structure, which facilitates the eccentric wrench head to abut against the outer surface of the valve cover.
[0011] Optionally or preferably, the front end portion of the rod axle is provided with a threaded structure, and the threaded structure of the front end portion of the rod axle matches the threaded structure inside the lower end screw mouth of the inside of the eccentric wrench body, which facilitates the simple connection between the rod axle and the eccentric wrench body.
[0012] Optionally or preferably, the weight can move forward and backward outside the rod axle, which facilitates the user to adjust the position of the weight.
[0013] Optionally or preferably, the center point of the eccentric wrench head and the center point of the valve cover are on the same straight line, which facilitates the user to use the eccentric wrench body without the eccentric wrench head at one end of the eccentric wrench body offsetting the valve cover.
[0014] Optionally or preferably, the thickness of the recess of the eccentric groove is greater than the thickness of the protruding portion inside the valve core, which facilitates the eccentric groove to clamp the protruding portion of the valve core.
[0015] Optionally or preferably, the outside of the handle is paved with knurling structure to prevent the hands of the user from slipping on the outside of the handle.
[0016] Based on the above technical solution, the utility model can at least produce the following technical effects:
[0017] The utility model provides a utility model discloses a utility model through the eccentric wrench body is in the minimum overflow hole of drilling tool float valve body, the eccentric wrench head of eccentric wrench body one end opens the valve cover, under the cooperation of the eccentric wrench head of eccentric wrench body one end and spring and valve cover, make eccentric wrench body produce radial displacement, and eccentric groove will hold up the valve core, spring force effect valve cover pushes eccentric wrench body to drilling tool float valve body, manually uses the hammer percussion end face, sets up the valve core is taken out, such that drilling tool float valve body after a certain use time, only need to take off the valve core, maintains and replaces to spring or valve cover, and the spring is not hurt when taking out the valve core, and the eccentric wrench head of eccentric wrench body one end and the eccentric groove of eccentric wrench body outer surface can automatic alignment and positioning, and convenient operation, the user can easily take out the valve core without visual, and spring and other accessories are not damaged. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 It is appearance structure schematic diagram of the utility model dismounting tool;
[0019] Figure 2 It is side view structure schematic diagram of the utility model dismounting tool;
[0020] Figure 3 It is hammer section structure schematic diagram of the utility model;
[0021] Figure 4 It is first use combination structure schematic diagram of the utility model;
[0022] Figure 5 It is second use combination structure schematic diagram of the utility model;
[0023] Figure 6 It is third use combination structure schematic diagram of the utility model;
[0024] Figure 7 It is fourth use combination structure schematic diagram of the utility model;
[0025] Figure 8 It is rod shaft structure schematic diagram of the utility model.
[0026] In the drawing: 1, eccentric wrench body;2, rod shaft;3, hammer;4, handle;5, eccentric wrench head;6, eccentric groove;7, drilling tool float valve body;8, valve core;9, valve cover;10, spring. DETAILED DESCRIPTION
[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model; obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0028] Example
[0029] like Figures 1-8 As shown, a tool for disassembling a drill float valve includes: an eccentric wrench body 1 and a drill float valve body 7. An eccentric wrench head 5 is provided at one end of the eccentric wrench body 1, an eccentric groove 6 is provided on the outer side of the eccentric wrench body 1, a screw hole is provided at the lower end of the inner side of the eccentric wrench body 1, a rod shaft 2 is provided on the outer side of the screw hole at the lower end of the inner side of the eccentric wrench body 1, a handle 4 is provided on one side of the rod shaft 2, and a counterweight 3 is provided on the outer side of the rod shaft 2.
[0030] The drill string float valve body 7 has a valve core 8 inside, valve covers 9 are provided at both ends of the inner side of the valve core 8, and a spring 10 is provided on one side of the valve cover 9.
[0031] The rest are as follows: one end of the eccentric wrench body 1 is equipped with an eccentric wrench head 5, which has a conical surface structure to facilitate the actuation of the valve cover 9. The outer side of the eccentric wrench body 1 is provided with an eccentric groove 6 to hold the protruding part of the valve core 8. The lower inner end of the eccentric wrench body 1 is provided with a screw hole, which is matched with the inner thread of the screw hole through the front thread structure of the rod shaft 2 to achieve a simple connection. One side of the rod shaft 2 is equipped with a handle 4, the outer side of which is covered with a knurled structure to increase the grip stability. The counterweight 3 can move back and forth along the rod shaft 2 to adjust the magnitude of the force. When in use, the eccentric wrench head 5 is aligned with the center point of the valve cover 9, and the valve core 8 is smoothly removed by the impact of the counterweight 3 without damaging the spring 10.
[0032] The rest are designed with a conical head 5 on the eccentric wrench body 1, which ensures that the thickness of the recessed part of the eccentric groove 6 of the valve cover 9 is greater than the thickness of the protruding part inside the valve core 8, ensuring that the valve core 8 is firmly locked. The thread structure of the front end of the rod shaft 2 matches the threaded end of the lower end of the eccentric wrench body 1, realizing the quick assembly and disassembly of the tool. The knurled structure on the handle 4 improves the grip safety during operation. During disassembly, the position of the counterweight 3 can be adjusted back and forth as needed to adapt to different operating forces. With this design, the user can easily remove the valve core 8 and maintain and replace the spring 10 or the valve cover 9 without damaging the spring 10.
[0033] This has resulted in the following effects and novel technologies:
[0034] The utility model provides a kind of drilling tool float valve dismounting tool, through its unique design, realize the efficient, safe and convenient valve core 8 dismounting effect, bring following remarkable technical effects and novelty, eccentric wrench body 1, the eccentric wrench head 5 of its eccentric wrench body 1 is adopted conical surface structure, this design is convenient to accurately exert force on bonnet 9 when operating, so that it can effectively open, to create space for the extraction of valve core 8, simultaneously, the eccentric slot 6 of eccentric wrench body 1 outside can firmly hold the convex part of valve core 8, ensure the stability and safety of valve core 8 in the process of dismounting, the screw thread structure of the screw mouth of eccentric wrench body 1 inside lower end and the front end portion of rod shaft 2 is matched, realize the quick assembly and dismounting of tool, improve operating efficiency, the knurling mark structure of handle 4 outside increases the stability when holding, prevent operator hand skid, improve operating safety, the design of weight 3 allows it to move back and forth outside rod shaft 2, so that user can adjust the size of force according to need, so that the extraction process of valve core 8 is more flexible and controllable, under the jolt of weight 3, valve core 8 can be smoothly extracted, simultaneously not damage spring 10, ensure the integrity of float valve body 7 and the reliability of subsequent use, the utility model is through above design, realize following technical effects: one is to improve the efficiency and convenience of valve core 8 dismounting;Second, ensure that spring 10 and other accessories are not damaged in the process of dismounting;Third, through the automatic alignment and positioning function of eccentric wrench body 1, so that operation is more simple, even in not visual condition can easily extract valve core 8;Fourth, through the design of adjustable weight 3, adapt to the demand of different operating force and working environment, these technical effects jointly constitute the novelty and practicality of the utility model.
[0035] Working principle: when using the drill float valve dismounting tool, first, the eccentric wrench body 1 at the front end of the rod shaft 2 is inserted into the minimum flow hole inside the drill float valve body 7, at this time, the eccentric wrench head 5 with a special protruding part at one end of the eccentric wrench body 1, at the same time, the eccentric wrench head 5 gradually contacts and pushes open the valve cover 9 during operation, under the combined action of the eccentric wrench head 5 at one end of the eccentric wrench body 1, the spring 10 and the valve cover 9, the eccentric wrench body 1 starts to produce radial displacement, at the same time, the eccentric groove 6 plays a role of locking the valve core 8, the eccentric groove 6 tightly clamps the valve core 8, so as to keep the eccentric wrench body 1 and the valve core 8 in the correct position, under the continuous force of the spring 10, the valve cover 9 further pushes the eccentric wrench body 1 to the inside of the drill float valve body 7, at the same time, the stability of sealing and connection is ensured, when the user needs to take out the valve core 8 clamped at the front end of the eccentric wrench body 1, the hammer 3 can be manually used to shock the end face of the valve core 8, in this way, the valve core 8 can be effectively separated from the eccentric wrench body 1, so as to complete the dismounting process of the valve core 8, this series of operations not only ensures the convenience of replacing the valve core 8, but also ensures the safety and reliability of the whole drill float valve body 7 system.
[0036] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of the present application is defined by the appended claims and their equivalents.
Claims
1. A drill tool float valve disassembly tool, comprising: The eccentric wrench body (1) and the drill tool float valve body (7) are characterized in that one end of the eccentric wrench body (1) is provided with an eccentric wrench head (5), the outer side of the eccentric wrench body (1) is provided with an eccentric groove (6), the lower end of the inner side of the eccentric wrench body (1) is provided with a screw port, the screw port of the lower end of the inner side of the eccentric wrench body (1) is provided with a rod shaft (2) on the outer side, one side of the rod shaft (2) is provided with a handle (4), and the outer side of the rod shaft (2) is provided with a weight (3). The inside of the drill tool float valve body (7) is provided with a valve core (8), both ends of the inner side of the valve core (8) are provided with valve covers (9), and one side of the valve cover (9) is provided with a spring (10).
2. A tool for removing a float valve from a drill tool according to claim 1, wherein, The shape of the eccentric wrench head (5) is a conical surface structure.
3. The tool of claim 1 wherein, The front end of the rod shaft (2) is provided with a threaded structure, and the threaded structure of the front end of the rod shaft (2) is matched with the threaded structure inside the lower end screw port of the eccentric wrench body (1).
4. The tool of claim 1 wherein, The weight (3) can move forward and backward on the outer side of the rod shaft (2).
5. The tool of claim 1 wherein, The center point of the eccentric wrench head (5) and the center point of the valve cover (9) are on the same straight line.
6. The tool of claim 1 wherein, The thickness of the recess of the eccentric groove (6) is greater than the thickness of the protruding part inside the valve core (8).
7. The tool of claim 1 wherein, The outer side of the handle (4) is paved with a knurling structure.