Limited space downhole blocker

Abstract

The utility model relates to intelligent well lid technical field especially limited space into well blocker, including lock cylinder subassembly and the unlocking subassembly for relieving the locking state of lock cylinder subassembly, the lock cylinder subassembly includes lock cylinder rod one and lock cylinder rod two, be provided with plane one and recess on lock cylinder rod one, be provided with plane two with plane one resistance on lock cylinder rod two. Through setting up the plane of resistance of lock cylinder rod one and lock cylinder rod two, complete the locking of lock cylinder rod two, through setting up the recess of lock cylinder rod two shape adaptation on lock cylinder rod one, realize the unlocking of lock cylinder rod two, after unlocking, operating personnel can open the baffle and carry out the downhole operation, utilize the intelligent key with magnetic code device and magnetic code subassembly to realize the drive of lock cylinder rod one, for physical locking and unlocking, need not additional power supply, cooperate intelligent key remote receiving unlocking command, ensure operating personnel operation authority, avoid the error operation.

Description

Technical Field

[0001] This utility model relates to the field of intelligent manhole cover technology, and in particular to a confined space manhole entry barrier. Background Technology

[0002] Maintenance shafts are typically installed at key locations and nodes in urban underground pipe networks. To ensure pedestrian safety, these shafts must be topped with protective covers. However, traditional manhole cover designs rely solely on the cover itself for protection, posing significant safety hazards: First, if the cover is lost or stolen, the exposed shaft will create a dangerous opening several meters deep, seriously threatening pedestrians and vehicles. Second, traditional manhole covers lack effective authentication mechanisms, allowing anyone to open and operate them at will. This not only risks misoperation by unqualified personnel but also poses a risk of malicious damage by criminals.

[0003] Existing technical solutions, such as the utility model patent with patent number 202020982376.8, disclose a wireless charging lock control device for smart manhole covers. It uses a lock core structure without built-in batteries to lock and control the smart manhole covers. However, the lock control structure of this device is relatively complex, and the entire manhole cover needs to be removed after unlocking, which is inconvenient to operate. Utility Model Content

[0004] Technical objective: In order to overcome the shortcomings of the existing technology, this utility model provides a confined space well entry blocker that can be installed on the well wall and has a simple locking structure that is easy to operate.

[0005] Technical Solution: To achieve the above objective, this utility model discloses a confined space well entry barrier, comprising a lock cylinder assembly and an unlocking assembly for releasing the locked state of the lock cylinder assembly. The lock cylinder assembly includes a first lock cylinder rod and a second lock cylinder rod. The first lock cylinder rod has a first plane and a groove, and the second lock cylinder rod has a second plane that abuts against the first plane. When the first plane abuts against the second plane, the lock cylinder assembly is in a locked state. The unlocking assembly drives the first lock cylinder rod to move. After releasing the abutment state between the first plane and the second plane, the second lock cylinder rod can move within the groove.

[0006] Furthermore, the groove is an arc-shaped structure, and the second lock cylinder rod is cylindrical in shape, allowing the second lock cylinder rod to rotate within the arc-shaped groove.

[0007] Furthermore, a blocking assembly is connected to the second lock cylinder rod. The blocking assembly rotates synchronously with the second lock cylinder rod. The blocking assembly includes a blocking rod capable of blocking the wellhead.

[0008] Furthermore, the lock cylinder assembly and the unlocking assembly are disposed in the housing, the housing is provided with a keyhole, a smart key can be inserted into the keyhole, the smart key is provided with a magnetic password device, and the smart key can remotely receive unlocking commands.

[0009] Furthermore, the lock cylinder rod is slidably connected inside the housing, and a magnetic password component is provided at the end of the lock cylinder rod near the keyhole. When the magnetic password device in the smart key is powered on, it is mutually exclusive with the magnetic password component.

[0010] Furthermore, a spring plate is abutted at the other end of the lock cylinder rod. One end of the spring plate is fixedly installed inside the housing, and the other end is a free end that abuts against the lock cylinder rod.

[0011] Furthermore, the blocking assembly is provided with a limiting part, which is a limiting bent end provided on the blocking rod near the housing and facing the housing.

[0012] Furthermore, the blocking assembly also includes a connecting rod, and the blocking assembly is provided with a limiting part, which is an L-shaped limiting end on the end of the connecting rod away from the blocking rod.

[0013] Furthermore, the housing is provided with a mounting base for mounting the housing on the well wall.

[0014] Furthermore, the lock cylinder rod is slidably connected to the inside of the housing via a U-shaped frame, the bottom wall of the U-shaped frame is fixedly installed on the inner wall of the housing, the lock cylinder rod slides through the two side walls of the U-shaped frame, and the end of the spring plate away from the lock cylinder rod is fixedly installed on the outer side of the side wall of the U-shaped frame.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This utility model relates to a confined space entry barrier. Locking of lock cylinder two is achieved by setting abutting planes on lock cylinder one and lock cylinder two. Unlocking of lock cylinder two is achieved by setting a groove on lock cylinder one that matches the shape of lock cylinder two. After unlocking, workers can open the barrier to carry out underground work. Lock cylinder one is driven by a smart key with a magnetic password device and a magnetic password assembly. This is a physical locking and unlocking mechanism, requiring no additional power supply. The smart key remotely receives unlocking commands, ensuring worker access rights and preventing erroneous operations. This utility model has a simple overall structure and is easy to operate. It sets up a "second line of defense" in the shaft, preventing unauthorized personnel from entering and improving the security of the shaft facility. Attached Figure Description

[0017] Figure 1This is a schematic diagram showing the blocking device of this utility model in use;

[0018] Figure 2 This is a schematic diagram of the internal structure of the shell in Embodiment 1;

[0019] Figure 3 This is a schematic diagram of the internal structure of the shell in Example 2;

[0020] Figure 4 This is a schematic diagram of the overall structure of the lock cylinder assembly;

[0021] Figure 5 for Figure 4 Enlarged view of the structure of section A in the middle;

[0022] Figure 6 This is a schematic diagram of the lock cylinder rod structure;

[0023] Figure 7 This is a schematic diagram of the connecting rod structure in Example 2.

[0024] In the diagram: 1. Lock cylinder rod one; 2. Lock cylinder rod two; 3. Plane one; 4. Groove; 5. Plane two; 6. Blocking rod; 7. Housing; 8. Keyhole; 9. Smart key; 10. Magnetic password component; 11. Spring plate; 12. Limiting bending end; 13. Mounting base; 14. U-shaped frame; 15. Well opening; 16. Connecting rod; 17. L-shaped limiting end; 18. NFC sensing component. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1 To be continued Figure 7 The principles and features of this utility model are described, and the examples given are only used to explain this utility model and are not intended to limit the scope of this utility model.

[0026] A confined space well entry barrier includes a locking core assembly, an unlocking assembly, and a blocking assembly, wherein the locking core assembly and the unlocking assembly are disposed in a housing 7. The blocking assembly is used to block the wellhead 15. When the locking core assembly is in a locked state, it can restrict the displacement of the blocking assembly. The operator can use the unlocking assembly to release the locking state of the locking core assembly. At this time, the operator can move the blocking assembly to expose the wellhead 15 for well entry operations.

[0027] Specifically, the housing 7 has two separate spaces inside. One space houses the lock cylinder assembly, and the other space has an outward-facing keyhole 8 into which a smart key 9 can be inserted. The smart key 9 contains a magnetic password device and can remotely receive unlocking commands to determine if it is a designated manhole cover. Specifically, an NFC sensing component 18 is located near the keyhole 8 inside the housing 7 for the smart key 9 to read lock information. After successful verification, the magnetic password device in the smart key 9 is powered on. The housing 7 is equipped with a mounting bracket 13 for mounting the housing 7 onto the manhole wall.

[0028] The lock cylinder assembly includes two mating lock cylinder rods, 1 and 2. Lock cylinder rod 1 is slidably connected inside the housing 7. Specifically, lock cylinder rod 1 is slidably connected inside the housing 7 via a U-shaped bracket 14. The bottom wall of the U-shaped bracket 14 is fixedly installed on the inner wall of the housing 7. Two corresponding through holes are provided on the two side walls of the U-shaped bracket 14. Lock cylinder rod 1 overlaps in the two through holes and slidably passes through the two side walls of the U-shaped bracket 14. Lock cylinder rod 2 passes through the two side walls of the housing 7 and is slidably or rotatably connected to the housing 7. Both ends of lock cylinder rod 2 extend out of the housing 7.

[0029] Lock cylinder rod 1 has a flat surface 3 and a groove 4, while lock cylinder rod 2 has a flat surface 5 that abuts against flat surface 3. When flat surface 3 and flat surface 5 abut, lock cylinder rod 1 restricts the movement of lock cylinder rod 2, and the lock cylinder assembly is in a locked state. When unlocking is required, the unlocking component drives lock cylinder rod 1 to slide in the through hole of U-shaped bracket 14, causing flat surface 3 and flat surface 5 to be misaligned, releasing the abutment between flat surface 3 and flat surface 5. At this time, groove 4 and lock cylinder rod 2 are positioned opposite each other, and groove 4 provides sufficient space for lock cylinder rod 2 to slide or rotate, allowing lock cylinder rod 2 to move within groove 4. Specifically, groove 4 has an arc-shaped structure, and lock cylinder rod 2 is cylindrical in shape, allowing lock cylinder rod 2 to rotate within the arc-shaped groove 4. Under certain special working conditions, the groove 4 can also be other shapes, as long as it allows the lock cylinder rod 2 to move. For example, the lock cylinder rod 2 is a square tube, and the groove 4 is a matching rectangle. When the plane 2 5 is offset from the plane 1 3, the lock cylinder rod 2 can slide relative to the lock cylinder rod 1 in the groove 4.

[0030] In this embodiment, the groove 4 has an arc-shaped structure, and the locking rod 2 is cylindrical. The locking rod 2 can rotate within the arc-shaped groove 4. A blocking assembly is connected to the locking rod 2, and the blocking assembly rotates synchronously with the locking rod 2. The blocking assembly includes a blocking rod 6 that can block the wellhead 15. The blocking rod 6 can be fixedly installed at both ends of the locking rod 2 via a connecting rod 16. When the locking assembly is unlocked, the operator manually lifts the blocking rod 6 to expose the wellhead 15 for downhole operations. The shape and structure of the blocking rod 6 can be selected according to the actual working conditions, and can be disc-shaped, long plate-shaped, tubular, etc. To ensure that the blocking rod 6 maintains a good blocking effect on the wellhead 15 and is easy to operate, a limiting part is provided on the blocking assembly, so that the blocking rod 6 moves within a certain range each time it is opened or lowered.

[0031] Example 1

[0032] The limiting part is set on the blocking rod 6. The connecting rod 16 is L-shaped and there are two opposite ones. One end of the two connecting rods 16 is fixedly installed on both ends of the lock cylinder rod 2. The other ends of the two connecting rods 16 are set opposite each other to form a U-shaped structure. The blocking rod 6 is fixedly connected to the U-shaped structure. The end of the blocking rod 6 near the housing 7 is provided with a limiting bending end 12 facing the housing 7. When the blocking rod 6 is lowered, the top of the limiting bending end 12 abuts against the housing 7 to realize the limiting of the blocking rod 6.

[0033] Example 2

[0034] The limiting part is provided on the connecting rod 16. There are two opposite connecting rods 16. The middle part is fixedly installed at both ends of the lock cylinder rod 2. The end away from the housing 7 is fixedly installed with the blocking rod 6. The other end is provided with an L-shaped limiting end 17. The two L-shaped limiting ends 17 are arranged opposite each other. When the blocking rod 6 is lowered, the housing 7 is in the space enclosed by the two L-shaped limiting ends 17, and the upper end surface of the lower part of the L-shaped limiting end 17 abuts against the housing 7, thereby limiting the blocking rod 6.

[0035] The unlocking component drives the lock cylinder rod 1 to move, and the lock cylinder rod 1 resets as follows:

[0036] A magnetic password component 10 is fixedly installed at one end of the lock cylinder rod 1 near the keyhole 8. When the magnetic password device in the smart key 9 is powered on, it repels the magnetic password component 10, generating a thrust that pushes the magnetic password component 10 to move, thereby pushing the lock cylinder rod 1 to move.

[0037] One end of the lock cylinder rod 1 away from the keyhole 8 abuts against a spring plate 11. One end of the spring plate 11 is fixedly installed inside the housing 7, and the other end is a free end that abuts against the lock cylinder rod 1. Specifically, the end of the spring plate 11 away from the lock cylinder rod 1 is fixedly installed on the outer side wall of the U-shaped frame 14. When the lock cylinder rod 1 moves under the drive of the unlocking component, it will give a corresponding pushing force to the free end of the spring plate 11, causing the spring plate 11 to deform. When the operator finishes the underground operation, the process of lowering the blocking rod 6 will drive the lock cylinder rod 2 to reset. After the operator pulls out the smart key 9, the magnetic password device and the magnetic password component 10 will disappear from mutual repulsion. During the reset process, the spring plate 11 will give the lock cylinder rod 1 a reverse pushing force to reset it. After reset, the plane 3 and the plane 5 abut against each other, and the locking is completed.

[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A limited space downhole blocker characterized by, The lock cylinder assembly includes a lock cylinder component and an unlocking component for releasing the lock cylinder component from its locked state. The lock cylinder component includes a first lock cylinder rod (1) and a second lock cylinder rod (2). The first lock cylinder rod (1) is provided with a first plane (3) and a groove (4). The second lock cylinder rod (2) is provided with a second plane (5) that abuts against the first plane (3). When the first plane (3) abuts against the second plane (5), the lock cylinder component is in a locked state. The unlocking component drives the first lock cylinder rod (1) to move. After the abutting state between the first plane (3) and the second plane (5) is released, the second lock cylinder rod (2) can move within the groove (4).

2. The limited space downhole blocker of claim 1, wherein, The groove (4) has an arc-shaped structure, and the lock core rod (2) is cylindrical in shape. The lock core rod (2) can rotate within the groove (4) of the arc-shaped structure.

3. The limited space downhole blocker of claim 2, wherein, A blocking assembly is connected to the second lock core rod (2). The blocking assembly rotates synchronously with the second lock core rod (2). The blocking assembly includes a blocking rod (6) that can block the wellhead.

4. The limited space downhole blocker of claim 3, wherein, The lock cylinder assembly and the unlocking assembly are disposed in the housing (7). The housing (7) is provided with a keyhole (8). A smart key (9) can be inserted into the keyhole (8). A magnetic password device is provided in the smart key (9). The smart key (9) can remotely receive unlocking commands.

5. The limited space downhole blocker of claim 4, wherein, The lock cylinder rod (1) is slidably connected inside the housing (7). A magnetic password component (10) is provided at one end of the lock cylinder rod (1) near the keyhole (8). The magnetic password device in the smart key (9) is mutually exclusive with the magnetic password component (10) after being powered on.

6. The limited space downhole blocker of claim 5, wherein, The other end of the lock cylinder rod (1) abuts against a spring plate (11). One end of the spring plate (11) is fixedly installed inside the housing (7), and the other end is a free end that abuts against the lock cylinder rod (1).

7. The limited space downhole blocker of claim 4, wherein, The blocking assembly is provided with a limiting part, which is a limiting bent end (12) located on the blocking rod (6) near the housing (7) and facing the housing (7).

8. The limited space downhole blocker of claim 4, wherein, The blocking assembly further includes a connecting rod (16), and a limiting part is provided on the blocking assembly. The limiting part is an L-shaped limiting end (17) on the end of the connecting rod (16) away from the blocking rod (6).

9. The limited space downhole blocker of claim 4, wherein, The housing (7) is provided with a mounting base (13) for mounting the housing (7) on the well wall.

10. The confined space well entry stopper according to claim 6, characterized in that, The locking rod (1) is slidably connected to the inside of the housing (7) via a U-shaped frame (14). The bottom wall of the U-shaped frame (14) is fixedly installed on the inner wall of the housing (7). The locking rod (1) slides through both sides of the U-shaped frame (14). The end of the spring plate (11) away from the locking rod (1) is fixedly installed on the outside of the side wall of the U-shaped frame (14).

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