Wellhead protection structure for a groundwater monitoring well

Abstract

The utility model discloses a wellhead protection structure of underground water monitoring well, including monitoring wellhead stake body, the inside fixed shell of monitoring wellhead stake body has the receiving cavity of the inside sliding of inner shell in the shell, the bottom of both sides of inner shell all is fixed with the sliding block, the both sides wall of shell is through the sliding slot on it with sliding block sliding assembly, to guide inner shell relative shell moves between the unfolding position and the receiving position, the utility model provides a wellhead protection structure of underground water monitoring well, through the sliding fit design of inner shell and shell, makes inner shell can move between the unfolding position and the receiving position. When needing overhauling or operating, can lower inner shell to the receiving position to the operating space of wellhead around is increased significantly, has overcome the defect that the traditional fixed type protection structure is inconvenient to operate, has improved the convenience and efficiency of maintenance operation greatly.

Description

Technical Field

[0001] This utility model relates to the field of groundwater monitoring well technology, and in particular to a wellhead protection structure for groundwater monitoring wells. Background Technology

[0002] A monitoring well is a specialized facility constructed using the borehole method in drilling engineering. It is mainly used to monitor dynamic parameters such as groundwater level, temperature, and quality. The well body typically consists of a well casing, a filter pipe, and a sedimentation pipe. Conventional groundwater monitoring wells usually require a protective structure at the wellhead to prevent foreign objects from falling in or human damage, ensuring the accuracy of the monitoring data and the normal operation of the monitoring equipment.

[0003] Currently, common wellhead protection structures are mostly fixed-height cylindrical shells that are fixedly installed at the wellhead and protrude above the ground. However, this fixed structure has significant shortcomings in practical use: when maintenance, repair, or replacement of the monitoring equipment downhole is required, the operating space is severely restricted by the shell protruding above the ground, causing great inconvenience to the staff and affecting work efficiency. Therefore, a wellhead protection structure for groundwater monitoring wells is proposed. Summary of the Invention

[0004] Based on this, it is necessary to provide a wellhead protection structure for groundwater monitoring wells to address the aforementioned technical problems. By designing the conventional fixed shell as a split outer shell and inner shell, and combining it with its own sliding design, it can meet the protection requirements in the protruding state or the maintenance operations in the retracted state.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A wellhead protection structure for a groundwater monitoring well includes a wellhead pile body, an outer shell body fixed inside the wellhead pile body, a storage cavity inside the outer shell body for sliding an inner shell body, sliders fixed at the bottom of both sides of the inner shell body, and sliding assembly of the side walls of the outer shell body with the sliders via grooves thereon to guide the inner shell body to move relative to the outer shell body between an extended position and a retracted position. The inner housing located between the two sliders has a storage groove on its surface, a locking block is provided in the storage groove, and a drive unit is provided inside the inner housing for driving the locking block to rotate. The top and bottom of the inner wall of the outer shell are respectively provided with an upper locking groove and a lower locking groove that correspond to and are adapted to the locking block. Under the action of the driving unit, the locking block can be rotated into the upper locking groove or the lower locking groove, so that the inner shell is locked in the unfolded or retracted state.

[0006] Furthermore, the top of the inner shell extends horizontally outward to form an upper boss, and the top of the outer shell extends horizontally outward to form a lower boss.

[0007] Furthermore, the drive unit includes a gear ring movably disposed within the upper boss portion, and a gear is movably mounted on the inner side of the gear ring at a position corresponding to the locking block. The top of the locking block is fixed to the corresponding gear above it via a connecting rod.

[0008] Furthermore, the drive unit also includes a guide groove formed on the surface of the upper boss portion, a connecting seat fixed to the toothed ring is slidably provided in the guide groove, and a positioning arm is hinged on the connecting seat located outside the guide groove.

[0009] Furthermore, the drive unit also includes a first positioning seat and a second positioning seat, which are spaced apart on one side of the guide groove. Rotating the connecting seat can cause the positioning arm to flip inside the first positioning seat or the second positioning seat.

[0010] Furthermore, the two inner sidewalls of the outer shell are provided with L-shaped guide grooves that are adapted to the slider, and the two L-shaped guide grooves are respectively connected to the top of the corresponding slide groove.

[0011] Furthermore, a top surface embedding ring is provided at the top of the outer shell, and a sealing block adapted to the outer end of the L-shaped outlet groove is fixed at the bottom of the top surface embedding ring.

[0012] Furthermore, a cover plate is hinged to one side of the upper boss portion, and both the cover plate and one side of the upper boss portion are provided with locking holes for locking with external locks.

[0013] Furthermore, the outer diameters of the upper and lower bosses are the same, and the outer diameter of the cover plate is larger than the outer diameter of the upper boss.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The wellhead protection structure for groundwater monitoring wells provided by this utility model features a sliding fit design between the inner and outer shells, allowing the inner shell to move between an extended and retracted position. When maintenance or operation is required, the inner shell can be lowered to the retracted position, significantly increasing the operating space around the wellhead. This overcomes the inconvenience of traditional fixed protection structures and greatly improves the convenience and efficiency of maintenance operations.

[0015] By incorporating a locking block controlled by a drive unit and upper and lower locking grooves on the inner wall of the outer shell, mechanical locking can be achieved in both fully extended and fully retracted states of the inner shell. This ensures the structural stability and safety of the protective structure in both in-use and non-in-use states, preventing accidental movement of the inner shell.

[0016] The L-shaped outlet groove and the top embedded ring sealing block design can seal the slider channel after the inner shell is installed, ensuring the integrity of the structure. At the same time, the sealing block can be pulled out, allowing the inner shell to be removed and disassembled from inside the outer shell, which is convenient for flexible application. Attached Figure Description

[0017] Figure 1 A schematic diagram of the wellhead protection structure for groundwater monitoring wells provided by this utility model; Figure 2 A schematic diagram of the wellhead protection structure of the groundwater monitoring well provided by this utility model in its stowed state; Figure 3 A cross-sectional view of the outer shell of the wellhead protection structure for the groundwater monitoring well provided by this utility model; Figure 4 A schematic diagram of the unfolded structure of the wellhead protection structure for the groundwater monitoring well provided by this utility model; Figure 5 A cross-sectional view of the drive unit of the wellhead protection structure for the groundwater monitoring well provided by this utility model; Figure 6 The wellhead protection structure for groundwater monitoring wells provided by this utility model Figure 5 Enlarged structural diagram at point A in the middle; Figure 7 A schematic diagram of the chute structure of the wellhead protection structure for the groundwater monitoring well provided by this utility model; Figure 8 The wellhead protection structure for groundwater monitoring wells provided by this utility model Figure 4 Enlarged structural diagram at point B.

[0018] The markings in the diagram are explained as follows: 1. Monitor the wellhead pile body; 2. Outer shell; 21. Reception cavity; 22. Slide groove; 23. Upper locking groove; 24. Lower locking groove; 25. Lower boss; 26. L-shaped guide groove; 27. Top surface embedded ring; 28. Sealing block; 3. Inner shell; 31. Slider; 32. Storage slot; 34. Locking block; 35. Upper boss; 36. Cover plate; 37. Locking hole; 4. Drive unit; 41. Gear ring; 42. Gear; 43. Guide groove; 44. Connecting seat; 45. Positioning arm; 46. First positioning seat; 47. Second positioning seat; 48. Connecting rod. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention. Example 1

[0020] Please refer to Figures 1-8 As shown, a wellhead protection structure for a groundwater monitoring well includes a wellhead pile 1. An outer shell 2 is fixed inside the wellhead pile 1. The outer shell 2 has a receiving cavity 21 within which an inner shell 3 can slide. Sliding blocks 31 are fixed to the bottom of both sides of the inner shell 3. The side walls of the outer shell 2 are slidably fitted with the sliding blocks 31 via grooves 22 to guide the inner shell 3 to move between an unfolded position and a retracted position relative to the outer shell 2. In this embodiment, the grooves 22 are symmetrically distributed on both sides of the surface of the outer shell 2, allowing the sliding blocks 31 to slide along the guiding direction of the grooves 22, thereby unfolding the inner shell 3 to form... Figure 1 The protective state shown, or the storage formation as... Figure 2 The storage status is shown.

[0021] The inner housing 3 located between the two sliders 31 has a storage groove 32 on its surface. A locking block 34 is provided in the storage groove 32. The inner housing 3 has a drive unit 4 that can drive the locking block 34 to rotate. The top and bottom of the inner sidewall of the outer housing 2 have upper locking grooves 23 and lower locking grooves 24 that correspond to and fit the locking block 34, respectively. Under the action of the drive unit 4, the locking block 34 can be rotated into the upper locking groove 23 or the lower locking groove 24, so that the inner housing 3 is locked in the unfolded or retracted state.

[0022] like Figure 2 In the state shown, the locking block 34 is rotated into the corresponding lower locking groove 24 by the drive unit 4, forming a locked state in the storage position. Figure 1 As shown, after the inner shell 3 is pulled outward and unfolded, the locking block 34 can be rotated into the corresponding upper locking groove 23 by the drive unit 4, thus forming a lock in the unfolded state. Example 2

[0023] The wellhead protection structure of the groundwater monitoring well provided in Example 1 has been further optimized, specifically, as follows: Figure 4As shown, the top of the inner housing 3 extends horizontally outward to form an upper boss 35, and the top of the outer housing 2 extends horizontally outward to form a lower boss 25. The drive unit 4 includes a gear ring 41 movably disposed in the upper boss 35. A gear 42 is movably mounted on the inner side of the gear ring 41 at the position corresponding to the locking block 34. The top of the locking block 34 is fixed to the corresponding gear 42 above it by a connecting rod 48.

[0024] The rotating gear ring 41 can drive the gear 42 inside it to form a meshing transmission. Since the gear 42 is connected to the corresponding locking block 34 through the connecting rod 48, the rotating gear 42 can also drive the locking block 34 to rotate through the connecting rod 48, so that the locking block 34 can rotate to lock outside the storage groove 32, or rotate inside the storage groove 32 to form storage. Example 3

[0025] The wellhead protection structure of the groundwater monitoring wells provided in Embodiment 1 or 2 is further optimized, such as... Figure 5 and Figure 6 As shown, the drive unit 4 also includes a guide groove 43 formed on the surface of the upper boss portion 35. A connecting seat 44 fixed to the toothed ring 41 is slidably provided in the guide groove 43. The top end of the connecting seat 44 protrudes outside the guide groove 43. A positioning arm 45 is hinged on the connecting seat 44 located outside the guide groove 43. In this way, the connecting seat 44 can be pushed from the outside to slide along the guide groove 43, so as to drive the toothed ring 41 on it to rotate.

[0026] Furthermore, the drive unit 4 also includes a first positioning seat 46 and a second positioning seat 47, which are spaced apart on one side of the guide groove 43. The rotating connecting seat 44 can cause the positioning arm 45 to flip inside the first positioning seat 46 or the second positioning seat 47.

[0027] like Figure 4 and Figure 8 As shown, at this time, the positioning arm 45 flips and engages with the corresponding second positioning seat 47, while the locking block 34 rotates outside the storage groove 32 and can form a locked state with the corresponding upper locking groove 23 or lower locking groove 24 on one side. For example, the inner shell 3 is pulled outward along the direction of the slide groove 22 to unfold it into the shape shown. Figure 1 After reaching the indicated state, the locking block 34 is locked in the corresponding upper locking groove 23. When it is necessary to inspect or operate the groundwater monitoring well, the positioning arm 45 is flipped out in the second positioning seat 47 and then pushed towards the first positioning seat 46. When it moves into place, the locking block 34 is completely rotated inside the storage groove 32. At this time, the positioning arm 45 can be flipped in the first positioning seat 46 to form a positioning function. Then, the inner shell 3 can be pushed into the outer shell 2 along the guide of the slide groove 22 to form storage.

[0028] After being fully retracted, the locking block 34 can be re-expanded by rotating the drive unit 4 and rotated into the corresponding lower locking groove 24 to position the inner shell 3 in the retracted state. After retraction, the operating space around the wellhead is significantly increased, overcoming the inconvenience of traditional fixed protection structures and greatly improving the convenience and efficiency of groundwater monitoring well maintenance operations. Example 4

[0029] The wellhead protection structure of the groundwater monitoring well provided in Example 3 has been further optimized, such as... Figure 4 The two inner sidewalls of the outer shell 2 are also provided with L-shaped guide grooves 26 that are adapted to the slider 31. The two L-shaped guide grooves 26 are respectively connected to the top of the corresponding slide groove 22. The top of the outer shell 2 is provided with a top surface embedding ring 27. The bottom of the top surface embedding ring 27 is fixed with a sealing block 28 that is adapted to the outer end of the L-shaped guide groove 26.

[0030] After pulling the top surface embedded ring 27 outward to disengage the sealing block 28 from the L-shaped outlet groove 26, the inner housing 3 can be horizontally rotated while the slider 31 slides at the top of the slide groove 22 (at which point the locking block 34 is in the retracted state) to allow the slider 31 to slide out through the L-shaped outlet groove 26, thus enabling the disassembly of the inner housing 3. Example 5

[0031] The wellhead protection structure of the groundwater monitoring well provided in Example 4 has been further optimized, such as... Figure 2 As shown, a cover plate 36 is hinged to one side of the upper boss portion 35. Both the cover plate 36 and the upper boss portion 35 have locking holes 37 for locking with external locks. The locking holes 37 can be locked by external locks, so that the cover plate 36 and the inner housing 3 form a closed lock. The outer diameters of the upper boss portion 35 and the lower boss portion 25 are the same, and the outer diameter of the cover plate 36 is larger than the outer diameter of the upper boss portion 35.

[0032] The inner side of the cover plate 36 has a clearance groove, so that after the cover plate 36 is flipped onto the surface of the upper boss 35, it will not obstruct the drive unit 4 above it. After the cover plate 36 is closed, it can also shield the lower upper boss 35 and lower boss 25, thus better protecting the groundwater monitoring wellhead.

[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A wellhead protection structure for a groundwater monitoring well, characterized in that, The system includes a monitoring wellhead pile body (1), an outer shell (2) is fixed inside the monitoring wellhead pile body (1), the outer shell (2) has a storage cavity (21) inside which an inner shell (3) can slide, and sliders (31) are fixed at the bottom of both sides of the inner shell (3). The two side walls of the outer shell (2) are slidably assembled with the sliders (31) through the sliding grooves (22) on them to guide the inner shell (3) to move relative to the outer shell (2) between the unfolded position and the stored position. A storage groove (32) is provided on the surface of the inner housing (3) located between the two sliders (31), a locking block (34) is provided in the storage groove (32), and a drive unit (4) is provided in the inner housing (3) for driving the locking block (34) to rotate. The top and bottom of the inner wall of the outer shell (2) are respectively provided with an upper locking groove (23) and a lower locking groove (24) that correspond to and are adapted to the locking block (34). Under the action of the driving unit (4), the locking block (34) can be rotated into the upper locking groove (23) or the lower locking groove (24) so ​​that the inner shell (3) is locked in the unfolded or retracted state.

2. The wellhead protection structure for groundwater monitoring wells according to claim 1, characterized in that, The top of the inner shell (3) extends horizontally outward to form an upper boss (35), and the top of the outer shell (2) extends horizontally outward to form a lower boss (25).

3. The wellhead protection structure for groundwater monitoring wells according to claim 2, characterized in that, The drive unit (4) includes a gear ring (41) movably disposed in the upper boss portion (35). A gear (42) is movably mounted on the inner side of the gear ring (41) at the position corresponding to the locking block (34). The top of the locking block (34) is fixed to the gear (42) above it via a connecting rod (48).

4. The wellhead protection structure for groundwater monitoring wells according to claim 3, characterized in that, The drive unit (4) further includes a guide groove (43) formed on the surface of the upper boss (35), a connecting seat (44) fixed to the toothed ring (41) is slidably provided in the guide groove (43), and a positioning arm (45) is hinged on the connecting seat (44) located outside the guide groove (43).

5. The wellhead protection structure for groundwater monitoring wells according to claim 4, characterized in that, The drive unit (4) further includes a first positioning seat (46) and a second positioning seat (47), which are spaced apart on one side of the guide groove (43). The rotating connecting seat (44) can cause the positioning arm (45) to flip inside the first positioning seat (46) or the second positioning seat (47).

6. The wellhead protection structure for groundwater monitoring wells according to claim 1, characterized in that, The two inner sidewalls of the outer shell (2) are also provided with L-shaped guide grooves (26) adapted to the slider (31), and the two L-shaped guide grooves (26) are respectively connected to the top of the corresponding slide groove (22).

7. The wellhead protection structure for groundwater monitoring wells according to claim 6, characterized in that, The top of the outer shell (2) is provided with a top surface embedding ring (27), and the bottom of the top surface embedding ring (27) is fixed with a sealing block (28) that is adapted to the outer end of the L-shaped outlet groove (26).

8. The wellhead protection structure for groundwater monitoring wells according to claim 2, characterized in that, A cover plate (36) is hinged to one side of the upper boss (35), and both the cover plate (36) and one side of the upper boss (35) are provided with locking holes (37) for locking with external locks.

9. The wellhead protection structure for groundwater monitoring wells according to claim 8, characterized in that, The outer diameters of the upper boss (35) and the lower boss (25) are the same, and the outer diameter of the cover plate (36) is greater than that of the upper boss (35).

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