In-well bolt protection device
By designing an in-well bolt protection device, a protective oil layer is formed using a combination of telescopic casing and tension springs, solving the problem of bolt corrosion, simplifying the maintenance process, and improving the stability of the connection.
Patent Information
- Application Number
- CN202422160853.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-04
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-09-04
AI Technical Summary
Bolts inside the well corrode due to prolonged exposure to a humid environment. Existing methods of applying grease for protection are cumbersome and ineffective, making it difficult to effectively prevent bolt corrosion.
A well bolt protection device was designed, which uses a protective oil injector consisting of a telescopic sleeve, a tension spring, and a double-acting oil injection seat. The tension spring controls the telescopic rod to clamp the bolt and inject oil, forming a protective oil layer that isolates the humid environment and seals the gaps.
It effectively protects the bolts, isolates them from humid environments, reduces corrosion, simplifies maintenance, and improves the sealing and stability of the connection.
Smart Images
Figure CN223524191U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to machine well maintenance technical field, concretely is a bolt protection device in well. BACKGROUND
[0002] When the maintenance personnel daily routine is found that the exhaust well, the drainage well, the maintenance well is in the environment damp, causes the exposed bolt serious corrosion, the main reason of bolt corrosion is that the exhaust well, the drainage well, the maintenance well chamber can easily accumulate water, the emulsification effect of the environment damp to the bolt surface lubricating grease is remarkable, the lubricating grease cannot further protect the bolt from rusting under the damp environment, the rusted bolt not only increases the maintenance difficulty, and easily causes the stress characteristic of the connecting part to be poor, easily produces the problem that the connection is not tight and cracks.
[0003] The present treatment method is to wipe off the grease at the bolt head end and then apply a layer of grease. This protection method is bound to require a large amount of manual operation, and the maintenance work is complicated. At the same time, applying grease brings a lot of inconvenience to the next operation and maintenance. In view of this, the present case is produced after in-depth research on the above problems. CONTENT OF THE UTILITY MODEL
[0004] In view of the deficiencies of the prior art, the bolt protection device in well is provided to solve the problems of the prior art.
[0005] To achieve the above purpose, the utility model discloses the following technical scheme: a bolt protection device in well, including well along, be provided with connecting bolt on the well along, the connecting bolt is the bolt that pulls to two, the both ends of connecting bolt are connected with the protection oiler;
[0006] The protection oiler is composed of an expansion sleeve, a pair of pull springs assembled in the expansion sleeve, and a double-acting oiling seat connected with the expansion sleeve;
[0007] The expansion sleeve is composed of a fixed sleeve and a pair of expansion rods inserted into both ends of the fixed sleeve. The opposite ends of the pair of expansion rods are connected by the pull spring. The ends of the pair of expansion rods are connected with the double-acting oiling rod. The double-acting oiling seat is sleeved on both ends of the connecting bolt.
[0008] The double-acting oiling seat includes a pair of oiling protection sleeves. The pair of oiling protection sleeves are sleeved on both ends of the connecting bolt. The pair of oiling protection sleeves are fixed by the pull rod. The pull rod is connected with the fixed sleeve. A pair of oiling pipes are connected to the pair of oiling protection sleeves. The inner grooves of the pair of oiling pipes are connected to the oiling protection sleeves. The ends of the pair of expansion rods are connected with a pair of push pistons assembled in the pair of oiling pipes.
[0009] Preferably, the pair of oil injection protective sleeves are plastic plates with a cylindrical structure, and a pair of cylindrical grooves for matching connecting bolts are arranged in the center of the pair of oil injection protective sleeves.
[0010] Preferably, the pair of telescopic rods are a pair of rod members with an n-shaped structure, one end of the telescopic rod is inserted into the fixed sleeve, and the other end of the telescopic rod is connected with the push piston.
[0011] Preferably, the fixed sleeve is a plate with a cylindrical structure, and a pair of cylindrical grooves are arranged at two ends of the fixed sleeve, and the pair of telescopic rods are assembled in the pair of cylindrical grooves.
[0012] Preferably, the pair of telescopic rods are provided with a pair of limiting plates, and the pair of limiting plates are connected with two ends of the pair of tension springs.
[0013] Beneficial effects
[0014] The utility model provides a kind of well bolt protection device. With following beneficial effects: the well bolt protection device is arranged at the bolt outside of well along, and the both ends of connecting bolt are limited and wrapped by protection oiler, and the specific protection oiler is with double-acting oiling seat as core, and the control effect of the pair of tension springs can control double-acting oiling seat clamping in the outside of connecting bolt by the pair of telescopic rods, on the one hand, it plays the role of wrapping connecting bolt to make connecting bolt isolated from external humid environment, on the other hand, by the push injection effect of double-acting oiling seat, connecting bolt is pushed oil and wrapped closed gap, further play the role of protection. BRIEF DESCRIPTION OF DRAWINGS
[0015] Fig. 1 It is the first three-dimensional structure schematic view of the well bolt protection device described in the utility model.
[0016] Fig. 2 It is the second three-dimensional structure schematic view of the well bolt protection device described in the utility model.
[0017] Fig. 3 It is the local sectional structure schematic view of the well bolt protection device described in the utility model.
[0018] In the drawing: 1, connecting bolt; 2, telescopic sleeve; 3, tension spring; 4, double-acting oiling seat; 5, well along; 21, fixed sleeve; 22, telescopic rod; 23, limiting plate; 41, tension rod; 42, oil injection protective sleeve; 43, oil injection pipe; 44, push piston. DETAILED DESCRIPTION
[0019] Clearly and completely describe the technical scheme in the embodiments of the utility model with reference to the drawings in the embodiments of the utility model, obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.
[0020] Please refer to Figs. 1-3 The utility model provides a kind of implementation scheme: in modern lake cleaning work, connecting bolt 1 in well is due to long-term in humid environment, and butter coated on surface is easy to produce emulsification, thus lose the protective effect to connecting bolt 1, easy to produce rust problem, often need to remove butter on connecting bolt 1 then reapply new butter, and outside grease layer, without protection device, thus poor protective effect, easy to cause bolt rust.
[0021] For the above problems, according to the drawings attached Figs. 1-3 It can be known that the application discloses a bolt protection device in well, which comprises a well rim, the well rim 5 is a gas drainage well, a well mouth rim of a water drainage well, generally, in order to ensure the sealing of the environment in the well, a well cover is usually buckled at the well mouth, thus the rim of the well cover needs to be connected with the well mouth rim by using connecting bolts 1, the connecting bolts 1 are usually arranged in a ring on the well rim 5, the connecting bolts 1 are opposite-pulling bolts, the connecting bolts 1 are installed in the opposite-pulling bolt structure to pull the rims of the well mouth and the well cover tightly to realize connection, and then the sealing or connection of the well mouth is realized, and in order to protect the connecting bolts 1, the protection oiler is arranged on the connecting bolts 1, the protection oiler plays a wrapping and sealing role on the connecting bolts 1 on the one hand, and plays a role of wrapping and isolating moisture by injecting oil into the end of the connecting bolts 1 on the other hand.
[0022] Specifically, the protection oiler is composed of a telescopic sleeve 2, opposite-pulling springs 3 arranged in the telescopic sleeve 2 and double-acting oiling seats 4 connected with the telescopic sleeve 2, the relative movement of the double-acting oiling seats 4 can be controlled by the opposite-pulling action of the opposite-pulling springs 3 in the telescopic sleeve 2, and then the two ends of the connecting bolts 1 can be limited and wrapped by the double-acting oiling seats 4, and the connecting bolts 1 are injected by controlling the double-acting oiling seats 4 to inject oil, the protection oil is extruded and wrapped on the connecting bolts 1, and then a protection oil layer is formed on the outside of the connecting bolts 1, and the protection oil is continuously extruded and wrapped on the connecting bolts 1 by the continuous extrusion of the double-acting oiling seats 4 after the oil is evaporated and dispersed from the connecting bolts 1 due to evaporation.
[0023] According to the drawings attached Figs. 1-3It can be known that the telescopic sleeve 2 is composed of the fixed sleeve 21 and a pair of telescopic rods 22 inserted into both ends of the fixed sleeve 21, the opposite ends of the pair of telescopic rods 22 are connected through the pair of tension springs 3, the ends of the pair of telescopic rods 22 are connected with the double-acting oil injection rod, and the double-acting oil injection seat 4 is sleeved on both ends of the connecting bolt 1;
[0024] In the specific implementation process, the pair of telescopic rods 22 are matched with both sides of the fixed sleeve 21 and can be telescoped on the fixed sleeve 21, the fixed sleeve 21 is a plate with a columnar structure, and a groove matched with the telescoping of the telescopic rod 22 is formed on the fixed sleeve 21, then the pair of tension springs 3 are connected with the telescopic rod 22, the pair of tension springs 3 are assembled in the middle of the fixed sleeve 21, the pair of telescopic rods 22 are connected with the pair of tension springs 3, and the pair of telescopic rods 22 have a relative movement trend under the pulling action of the pair of tension springs 3, the pair of telescopic rods 22 are oppositely clamped and pushed and extruded to protect the oil injection from the connecting bolt 1;
[0025] Further according to the description attached Figs. 1-3 It can be known that the double-acting oil injection seat 4 includes a pair of oil injection protective sleeves 42, the pair of oil injection protective sleeves 42 are sleeved on both ends of the connecting bolt 1, the pair of oil injection protective sleeves 42 are fixed through the pair of tension rods 41, the pair of tension rods 41 are connected with the fixed sleeve 21, the pair of oil injection protective sleeves 42 are connected with a pair of oil injection pipes 43, the pair of oil injection pipes 43 are connected in groove communication to the oil injection protective sleeves 42, and the ends of the pair of telescopic rods 22 are connected with a pair of push pistons 44 assembled in the pair of oil injection pipes 43;
[0026] In the specific implementation process, the pair of oil injection protective sleeves 42 are communicated with the pair of oil injection pipes 43, the oil injection protective sleeve 42 and the oil injection pipe 43 form an external sleeve shell conforming to the end shape of the connecting bolt 1, the oil injection protective sleeve 42 and the oil injection pipe 43 are sleeved on the connecting bolt 1, the pair of tension rods 41 on the fixed sleeve 21 play a limiting role on the pair of oil injection protective sleeves 42, the pair of telescopic rods 22 drive the pair of push pistons 44 to move synchronously under the pulling action of the pair of tension springs 3, then the protection oil in the oil injection pipe 43 is pushed and extruded through the push piston 44, so that the protection oil enters the oil injection protective sleeve 42 from the oil injection pipe 43, the internal part of the oil injection protective sleeve 42 is provided with a nut cavity groove body matched with the connecting bolt 1, so that the oil injection protective sleeve 42 wraps the nut of the connecting bolt 1, and the contact with the external humid environment is isolated, and the gap position can be extruded and blocked by the protection oil, thereby playing an isolation effect on the connecting bolt 1.
[0027] As a preferred solution, further, the pair of oil injection protective sleeves 42 are plastic plates with a columnar structure, a pair of columnar grooves matched with the connecting bolt 1 are formed in the center of the pair of oil injection protective sleeves 42, the pair of columnar grooves in the pair of oil injection protective sleeves 42 play a sleeve effect on the connecting bolt 1, thereby playing a wrapping effect on the connecting bolt 1.
[0028] As a preferred solution, further, the pair of telescopic rods 22 are a pair of n-shaped structural rods, one end of the telescopic rod 22 is inserted into the fixed sleeve 21, the other end of the telescopic rod 22 is connected with the push piston 44, and the two ends of the telescopic rod 22 are arranged in the fixed sleeve 21 and the oil injection pipe 43 respectively.
[0029] As a preferred solution, further, the fixed sleeve 21 is a column-shaped plate, a pair of column-shaped grooves are arranged at the two ends of the fixed sleeve 21, and the pair of telescopic rods 22 are assembled in the pair of column-shaped grooves, so that the pair of column-shaped grooves limit and guide the pair of telescopic rods 22, and the telescopic rod 22 can only move linearly.
[0030] As a preferred solution, further, the pair of telescopic rods 22 are provided with a pair of limiting plates 23, and the pair of limiting plates 23 are connected with the two ends of the pair of tension springs 3, so as to avoid the telescopic rod 22 from being separated from the fixed sleeve 21.
[0031] As a preferred solution, further, the pair of telescopic rods 22 are provided with a pair of limiting plates 23, and the pair of limiting plates 23 are connected with the two ends of the pair of tension springs 3, so as to avoid the telescopic rod 22 from being separated from the fixed sleeve 21.
[0032] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. A well bolt protection device comprising a well rim, on which a connecting bolt (1) is arranged, which connecting bolt (1) is a tension bolt, characterized in that The connecting bolt (1) is connected with a protection oiler between two ends thereof; The protection oiler is composed of an elastic sleeve (2), a pair of tension springs (3) assembled in the elastic sleeve (2) and a double-acting oiling seat (4) connected with the elastic sleeve (2). The elastic sleeve (2) is composed of a fixed sleeve (21) and a pair of elastic rods (22) inserted into two ends of the fixed sleeve (21), opposite ends of the pair of elastic rods (22) are connected through the pair of tension springs (3), ends of the pair of elastic rods (22) are connected with the double-acting oiling seat (4), and the double-acting oiling seat (4) is sleeved on the two ends of the connecting bolt (1). The double-acting oiling seat (4) comprises a pair of oiling protection sleeves (42), the pair of oiling protection sleeves (42) are sleeved on the two ends of the connecting bolt (1), the pair of oiling protection sleeves (42) are fixed through a pair of tension rods (41), the pair of tension rods (41) are connected with the fixed sleeve (21), a pair of oiling pipes (43) are connected on the pair of oiling protection sleeves (42), grooves in the pair of oiling pipes (43) are communicated to the oiling protection sleeves (42), and a pair of push pistons (44) are connected on the ends of the pair of elastic rods (22) and assembled in the pair of oiling pipes (43).
2. A downhole bolt protector according to claim 1, characterised in that The pair of oiling protection sleeves (42) are plastic plate blocks in a cylindrical structure, a pair of cylindrical grooves matched with the connecting bolt (1) are formed in the centers of the pair of oiling protection sleeves (42).
3. A downhole bolt protector according to claim 2, characterised in that The pair of elastic rods (22) are a pair of rod pieces in an n-shaped structure, one end of the elastic rod (22) is inserted into the fixed sleeve (21), and the other end of the elastic rod (22) is connected with the push piston (44).
4. A downhole bolt protector according to claim 3, wherein, The fixed sleeve (21) is a plate block in a cylindrical structure, a pair of cylindrical grooves are formed in two ends of the fixed sleeve (21), and the pair of elastic rods (22) are assembled in the pair of cylindrical grooves.
5. A downhole bolt protector according to claim 4, wherein, The ends of the pair of elastic rods (22) are provided with a pair of limiting plates (23), and the pair of limiting plates (23) are connected with two ends of the pair of tension springs (3).