Pressurized water test device for hydrogeological survey drilling
By introducing floating plates and clamping components into the pressurized water test device, the problem of sealed tube moving upward under high water pressure is solved, and the accuracy and stability of the test results are achieved.
Patent Information
- Application Number
- CN202510388069.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-31
- Publication Date
- 2025-05-16
AI Technical Summary
When the hole depth increases and the water pressure increases, it is difficult for the existing pressurized water test device to cope with the complexity of the longitudinal force of the sealing pipe, causing the sealing pipe to move upward, affecting the accuracy of the test results.
A pressurized water test device including a floating plate and a clamping assembly is designed. A sealing ring is installed on the circumference of the floating plate, and the water injection pipe penetrates through the floating plate and achieves a sliding seal through the moving sealing ring. The clamping assembly consists of multiple sets of clamping parts and fastening parts, which can be automatically adjusted when the water pressure changes. The fastening parts prevent excessive deflection through the flange, ensuring the stability of the sealing tube.
This device can effectively disperse the longitudinal force of water pressure on the sealing pipe, prevent the sealing pipe from moving upward, ensure the accuracy and stability of the test results, and is suitable for different depths and water pressure conditions.
Smart Images
Figure CN120007204A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of hydrogeological exploration, and in particular to a water pressure test device for hydrogeological exploration drilling. Background Art
[0002] Hydrogeological survey, also known as "hydrogeological investigation", refers to the hydrogeological investigation and research work carried out to find out the hydrogeological conditions of a region. It aims to understand the causes, distribution and movement laws of groundwater and surface water, and provide a basis for the rational exploitation and utilization of water resources, and the correct design and construction of foundation and piling projects. It includes groundwater survey. Groundwater survey mainly investigates and studies the changes in groundwater levels at different times of the year, understands the development of rock fissures and permeability, finds out the burial conditions and corrosiveness of groundwater, determines the possible changes and impacts of groundwater during the construction and use of buildings, and puts forward prevention and control suggestions. At present, in the process of geological survey, it is usually done by drilling a test hole in the rock mass and inserting a dense water injection pipe into the rock mass. The sealing pipe is extended into the hole together, wherein the sealing pipe usually includes a sealing plate with a high-strength sealing ring and a detachable hollow rod body fixedly connected to the top of the sealing plate and with an increased length. The water injection pipe is placed in the rod body. After the two reach a predetermined depth, the part of the sealing pipe outside the hole is reinforced with a limiting component to prevent the high-pressure water from causing the sealing pipe to move up or even fall off. At this time, high-pressure water is injected into the cavity reserved in the hole of the exploration hole through the water injection pipe to test the water absorption of this section of rock mass. The pressure of the injected water is controlled by instruments and equipment. The high-pressure water penetrates into the rock mass through the cracks around the hole wall. The final amount of water that penetrates will tend to a stable value. The strength of the rock permeability can be determined based on the water pressure head, the length of the test section and the stable infiltration water volume.
[0003] However, although the existing water pressure testing device has a reinforcement component to prevent the sealing tube from moving up and out, the structure of the reinforcement component is relatively simple. As the depth of the hole increases and as the applied water pressure increases, it is difficult to cope with the longitudinal force of the sealing tube in this complex situation, which can easily increase the upward displacement of the sealing tube, resulting in poor test results and affecting the final result of the test. Summary of the invention
[0004] The invention provides a water pressure test device for hydrogeological survey drilling, which can ensure the accuracy of the test result.
[0005] The present invention provides a water pressure test device for hydrogeological exploration drilling, comprising a water injection pipe and a sealing plate, and also comprising: a floating plate with a sealing ring sleeved on the circumferential side, the water injection pipe passes through the floating plate and the two are slidably sealed by a dynamic sealing ring, a clamping assembly is arranged between the floating plate and the sealing plate, the clamping assembly comprises: multiple groups of clamping parts and multiple abutting parts, the multiple groups of clamping parts are annular and evenly distributed between the floating plate and the sealing plate, the clamping part comprises two rods hinged at two ends, the other ends of the two rods are respectively hinged to the opposite surfaces of the sealing plate and the floating plate, the multiple abutting parts correspond to the positions of the clamping parts one by one, the abutting parts are rotatably connected to the hinge shafts of the hinged ends of the corresponding two rods, the abutting parts are connected to a flange to prevent excessive up and down deflection, and as the water pressure of the floating plate increases, the rods are driven to rotate so that the abutting parts are pressed against the rock wall of the hole.
[0006] Preferably, the abutting member comprises a U-shaped shell made of metal material, the shell is rotatably connected to the hinge shaft, and the flange is fixedly connected to the upper and lower ends of the shell.
[0007] Preferably, the outer side of the shell is in an outer arc shape matching the curvature of the inner diameter of the hole, and a plurality of protrusions are arranged on the outer arc wall of the shell.
[0008] Preferably, a plurality of support components are provided on the upper surface of the sealing plate to assist in supporting the sealing plate, and the support components are evenly distributed along the circumference of the sealing plate, and the support components include: a plate body, a sliding rod, and a driving component. A through hole is opened in the middle of the plate body, and the center line of the through hole coincides with one of the diameters of the sealing plate. The sliding rod is horizontally connected to the through hole, and an arc-shaped abutment plate is connected to the end of the sliding rod close to the outside, and a plurality of rake teeth are connected to the abutment plate. The driving component is connected to the plate body, and is used to drive the sliding rod to move horizontally so that the rake teeth are tightly pressed against the rock wall of the hole.
[0009] Preferably, the driving component includes: a rotating sleeve, a limiting rod, a gear, and a rack. The rotating sleeve is arranged on the sliding rod. An internal thread is provided inside the rotating sleeve, and an external thread is provided correspondingly on the sliding rod. The rotating sleeve is threadedly connected to the sliding rod, and the rotating sleeve passes through the through hole, and the two are rotatably connected. The limiting rod is laterally fixed to one side of the plate body close to the abutment plate, and the other end of the limiting rod passes through the abutment plate and the two are slidably connected. The gear is fixedly sleeved on the rotating sleeve, and the rack is meshed with the gear. The rack drives the gear to rotate through the driving member.
[0010] Preferably, the sealing plate is provided with a plurality of through holes in the vertical direction at positions corresponding to the racks, each through hole is provided with a guide rod, the lower end of the guide rod is fixedly connected to the upper surface of the floating plate, and the corresponding racks are fixedly connected to the guide rod.
[0011] Preferably, each guide rod is fixedly connected to the floating plate via a fixing flange.
[0012] Preferably, the side of the rake teeth away from the abutment plate is in the shape of a conical spike.
[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: a sealing ring is provided on the peripheral side of the floating plate in the structure of the device, and a water injection pipe runs through the floating plate and realizes a sliding seal through a dynamic sealing ring. This design enables the floating plate to move up and down freely under the guidance of the water injection pipe while maintaining good sealing performance to prevent water pressure leakage. The floating plate and the sealing plate are connected by a clamping assembly, which is composed of a plurality of groups of clamping components and a plurality of abutting members, and can effectively cope with the longitudinal force caused by changes in water pressure. The clamping assembly includes a plurality of groups of clamping components and a plurality of abutting members, and the clamping components are annular and evenly distributed between the floating plate and the sealing plate. Each clamping component is composed of a rod member with two hinged ends, and the other end of the rod member is respectively hinged to the sealing plate and the floating plate, and the abutting member is rotatably connected to the hinge shaft of the clamping component, and is prevented from upward movement by a flange. The floating plate is excessively deflected downward. As the water pressure increases, the floating plate moves upward, driving the rod of the clamping component to rotate, so that the clamping component gradually approaches the rock wall of the hole and presses against it. This design can effectively disperse the longitudinal force of the water pressure on the sealing tube and prevent the sealing tube from moving up. Specifically, as the water pressure of the floating plate increases, it drives the rods to rotate so that the clamping component presses against the rock wall of the hole, and water can be injected into the hole along the water injection pipe. As the water pressure becomes higher and higher, the water will squeeze the floating plate upward. The floating plate moves upward under the guidance of the water injection pipe and drives multiple rods to be squeezed. The two rods of the same clamping component approach each other. At this time, the clamping component connected to the hinge shaft hinged to the rod will be rotated toward the side close to the rock wall of the hole and press against the rock wall, thereby playing an auxiliary supporting role for the end of the sealing tube close to the test hole.
[0014] In summary, the device has dynamic response capability. As the water injection pipe injects water into the hole, the water pressure gradually increases, and the floating plate moves upward under the action of the water pressure, driving the rod of the clamping component to rotate. The two rods of the same clamping component approach each other, pushing the clamping component to approach the rock wall of the hole and clamp it against it. This adaptive mechanism can automatically adjust the pressure of the clamping component according to the change of water pressure, ensuring that the sealing tube can remain stable under different depths and water pressure conditions, and the greater the water pressure intensity, the more stable the clamping force. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 A schematic structural diagram of a water pressure test device for hydrogeological exploration drilling provided by an embodiment of the present invention;
[0016] Figure 2 A schematic diagram of the transverse structure of a water pressure test device for hydrogeological exploration drilling provided by an embodiment of the present invention;
[0017] Figure 3 A partial structural schematic diagram of a water pressure test device for hydrogeological exploration drilling provided by an embodiment of the present invention;
[0018] Figure 4 A partial structural schematic diagram of a water pressure test device for hydrogeological exploration drilling provided by an embodiment of the present invention;
[0019] Figure 5 for Figure 4 A partial enlarged view of part A.
[0020] Description of reference numerals:
[0021] 1. Water injection pipe; 2. Sealing plate; 21. Through hole; 3. Floating plate; 4. Clamping assembly; 41. Clamping part; 411. Rod; 42. Fastening part; 421. Flange; 5. Support assembly; 51. Plate body; 511. Through hole; 52. Sliding rod; 521. External thread; 53. Abutment plate; 531. Rake teeth; 54. Driving part; 541. Rotating sleeve; 542. Limiting rod; 543. Gear; 544. Rack; 6. Guide rod. DETAILED DESCRIPTION
[0022] A specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific implementation.
[0023] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the technical solutions of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0024] refer to Figure 1 , Figure 2 and Figure 3The present invention provides a water pressure test device for hydrogeological exploration drilling, comprising a water injection pipe 1 and a sealing plate 2, and further comprising: a floating plate 3 with a sealing ring sleeved on the circumferential side, the water injection pipe 1 passes through the floating plate 3 and the two are slidably sealed by a dynamic sealing ring, a clamping assembly 4 is arranged between the floating plate 3 and the sealing plate 2, and the clamping assembly 4 comprises: a plurality of groups of clamping parts 41 and a plurality of fastening parts 42, the plurality of groups of clamping parts 41 are annular and evenly distributed between the floating plate 3 and the sealing plate 2, and the clamping parts 41 It includes two rods 411 hinged at their ends, the other ends of the two rods 411 are hinged to the opposite surfaces of the sealing plate 2 and the floating plate 3 respectively, a plurality of abutting members 42 correspond to the positions of the clamping members 41 one by one, the abutting members 42 are rotatably connected to the hinge shafts of the hinged ends of the two corresponding rods 411, and a flange 421 is connected to the abutting members 42 to prevent excessive upward and downward deflection. As the water pressure of the floating plate 3 increases, the rods 411 are driven to rotate so that the abutting members 42 are pressed against the rock wall of the hole.
[0025] In the above embodiments, although the existing water pressure test device has been designed to prevent the sealing tube from moving upward and falling out, the structure of its reinforcement components is relatively simple and it is difficult to cope with the longitudinal force under complex working conditions. As the hole depth increases and the water pressure rises, the sealing tube is prone to a large upward displacement, resulting in unsatisfactory test results and even affecting the accuracy of the final result. In order to solve this problem, a new type of water pressure test device for hydrogeological exploration drilling is proposed. The device not only has a traditional water injection pipe 1 and a sealing plate 2, but also introduces innovative designs such as a floating plate 3 and a clamping assembly 4 to enhance the stability and adaptability of the device. A sealing ring is provided on the side of the floating plate 3 in the structure of the device, and the water injection pipe 1 penetrates the floating plate 3 and passes through The dynamic sealing ring realizes sliding sealing. This design enables the floating plate 3 to move freely up and down under the guidance of the water injection pipe 1 while maintaining good sealing performance to prevent water pressure leakage. The floating plate 3 and the sealing plate 2 are connected by a clamping assembly 4. The clamping assembly 4 consists of multiple groups of clamping components 41 and multiple abutting components 42, which can effectively cope with the longitudinal force caused by water pressure changes. The clamping assembly 4 includes multiple groups of clamping components 41 and multiple abutting components 42. The clamping components 41 are annular and evenly distributed between the floating plate 3 and the sealing plate 2. Each clamping component 41 consists of two rods 411 hinged at two ends. The other ends of the rods 411 are respectively hinged to the sealing plate 2 and the floating plate 3. The abutting components 42 are rotatably connected to the hinge shaft of the clamping component 41 and are connected through flanges. 421 prevents excessive deflection up and down. As the water pressure increases, the floating plate 3 moves upward, driving the rod 411 of the clamping component 41 to rotate, so that the clamping member 42 gradually approaches the rock wall of the hole and presses against it. This design can effectively disperse the longitudinal force of the water pressure on the sealing tube and prevent the sealing tube from moving up. Specifically, as the water pressure of the floating plate 3 increases, it drives each rod 411 to rotate so that the clamping member 42 presses against the rock wall of the hole, and water can be injected into the hole along with the water injection pipe 1. As the water pressure increases, the water will squeeze the floating plate 3 upward. The floating plate 3 moves upward under the guidance of the water injection pipe 1 and drives multiple rods 411 to be squeezed. The two rods 411 of the same clamping component 41 approach each other. At this time, the rods 411 hinged to the rods 411 will be pressed. The clamping member 42 connected to the hinge shaft rotates toward the side close to the rock wall of the hole and presses against the rock wall, thereby playing an auxiliary supporting role for the end of the sealing tube close to the test hole. In summary, the device has dynamic response capability, and can gradually increase the water pressure as the water injection pipe 1 injects water into the hole. The floating plate 3 moves upward under the action of the water pressure, driving the rod 411 of the clamping component 41 to rotate, and the two rods 411 of the same clamping component 41 approach each other, pushing the clamping member 42 to approach the rock wall of the hole and press against it. This adaptive mechanism can automatically adjust the pressure of the clamping member 42 according to the change of water pressure, ensuring that the sealing tube can remain stable under different depths and water pressure conditions, and the greater the water pressure intensity, the more stable its clamping force.
[0026] Specifically, when used, the sealing plate 2 is lowered to a predetermined sealing position in the hole. At this time, according to the degree of rotation and contraction of each rod 411 after the fastening member 42 contacts the rock wall of the hole, and the maximum upward movement of the floating plate 3, it is adaptively adjusted upward to ensure that when the floating plate 3 moves to the maximum position, the cavity between the floating plate 3 and the bottom of the hole is the predetermined test hole volume.
[0027] Further, refer to Figure 3 The fastening member 42 includes a U-shaped metal shell, the shell is rotatably connected to the hinge shaft, and the flange 421 is fixedly connected to the upper and lower ends of the shell.
[0028] In the above embodiments, the housing can achieve the effect of preventing excessive deflection through the flange 421 .
[0029] Furthermore, the outer side of the shell is in an outer arc shape matching the curvature of the inner diameter of the hole, and a plurality of protrusions are arranged on the outer arc wall of the shell.
[0030] In the above embodiments, the provided protrusions can enhance the reinforcement effect by pressing the shell against the uneven rock wall.
[0031] Further, refer to Figure 1 , Figure 4 and Figure 5 A plurality of support components 5 are provided on the upper surface of the sealing plate 2 to assist in supporting the sealing plate 2. The support components 5 are evenly distributed along the circumference of the sealing plate 2. The support components 5 include: a plate body 51, a sliding rod 52, and a driving component 54. A through hole 511 is opened in the middle of the plate body 51. The center line of the through hole 511 coincides with one of the diameters of the sealing plate 2. The sliding rod 52 is horizontally connected to the through hole 511. The end of the sliding rod 52 close to the outside is connected to an arc-shaped abutment plate 53. A plurality of rake teeth 531 are connected to the abutment plate 53. The driving component 54 is connected to the plate body 51 to drive the sliding rod 52 to move horizontally so that the rake teeth 531 are tightly pressed against the rock wall of the hole.
[0032] The driving component 54 includes: a rotating sleeve 541, a limiting rod 542, a gear 543, and a rack 544. The rotating sleeve 541 is sleeved on the sliding rod 52. An internal thread is provided inside the rotating sleeve 541, and an external thread 521 is correspondingly provided on the sliding rod 52. The rotating sleeve 541 is threadedly connected to the sliding rod 52. The rotating sleeve 541 passes through the through hole 511, and the two are rotatably connected. The limiting rod 542 is laterally fixed to the side of the plate body 51 close to the abutment plate 53. The other end of the limiting rod 542 passes through the abutment plate 53 and the two are slidably connected. The gear 543 is fixedly sleeved on the rotating sleeve 541, and the rack 544 is meshed with the gear 543. The rack 544 drives the gear 543 to rotate through the driving member.
[0033] When the gear 543 is engaged and rotated, the gear 543 will drive the rotating sleeve 541 to rotate on the plate body 51. At this time, the limiting rod 542 and the plate body 51 have a limiting effect on the sliding rod 52, and the sliding rod 52 is threadedly connected to the rotating sleeve 541 through the external thread 521. Therefore, the sliding rod 52 will drive the abutment plate 53 and the rake teeth 531 to move horizontally toward the side close to the rock wall or away from the rock wall. Specifically, it is related to the rotation direction of the external thread 521 and the internal thread. In this embodiment, it is preferred that when the gear 543 drives the rotating sleeve 541 to rotate clockwise, the sliding rod 52 moves horizontally toward the side close to the rock wall, so that the abutment plate 53 and the rake teeth 531 are pressed against the rock wall, thereby further achieving the beneficial effect of auxiliary support.
[0034] Further, refer to Figure 1 and Figure 5 The sealing plate 2 is provided with a plurality of through holes 21 in the vertical direction at positions corresponding to the racks 544 , and a guide rod 6 is inserted into each through hole 21 . The lower end of the guide rod 6 is fixedly connected to the upper surface of the floating plate 3 , and the corresponding racks 544 are fixedly connected to the guide rod 6 .
[0035] In the above embodiments, the guide rod 6 and the through hole 21 are provided, so that the guide rod 6 can be synchronously driven to move upwards during the upward movement of the floating plate 3, and the rack 544 connected thereto can be driven to move vertically.
[0036] Further, refer to Figure 1 , each guide rod 6 is fixedly connected to the floating plate 3 through a fixing flange.
[0037] In the above embodiments, each guide rod 6 is fixedly connected to the floating plate 3 via a fixing flange, so that the stability of the connection can be improved.
[0038] Further, refer to Figure 1 The side of the rake teeth 531 away from the abutment plate 53 is in a conical spike shape.
[0039] The above disclosures are only several specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.
Claims
1. A water pressure test device for hydrogeological exploration drilling, comprising a water injection pipe (1) and a sealing plate (2), characterized in that: Also includes: A floating plate (3) is sleeved with a sealing ring on its circumferential side, the water injection pipe (1) passes through the floating plate (3) and the two are slidably sealed by a dynamic sealing ring, and a clamping assembly (4) is provided between the floating plate (3) and the sealing plate (2), and the clamping assembly (4) comprises: A plurality of groups of clamping components (41) are annular and evenly distributed between the floating plate (3) and the sealing plate (2), the clamping components (41) comprising two rods (411) with hinged ends, the other ends of the two rods (411) being hinged to the opposite surfaces of the sealing plate (2) and the floating plate (3) respectively; A plurality of abutting members (42) correspond to the positions of the clamping members (41) one by one. The abutting members (42) are rotatably connected to the hinge shafts of the hinged ends of the corresponding two rods (411). The abutting members (42) are connected to flanges (421) for preventing excessive upward and downward deflection. As the water pressure of the floating plate (3) increases, the rods (411) are driven to rotate so that the abutting members (42) are pressed against the rock wall of the hole.
2. A water pressure test device for hydrogeological exploration drilling according to claim 1, characterized in that: The abutting member (42) comprises a U-shaped shell made of metal material, the shell is rotatably connected to the hinge shaft, and the flange (421) is fixedly connected to the upper and lower ends of the shell.
3. A water pressure test device for hydrogeological exploration drilling according to claim 2, characterized in that: The outer side of the shell is in an outer arc shape matching the arc of the inner diameter of the hole, and a plurality of protrusions are arranged on the outer arc wall of the shell.
4. A water pressure test device for hydrogeological exploration drilling according to claim 1, characterized in that: A plurality of support components (5) are provided on the upper surface of the sealing plate (2) to assist in supporting the sealing plate (2). The support components (5) are evenly distributed along the circumference of the sealing plate (2). The support components (5) include: The plate body (51) has a through hole (511) in the middle, and the center line of the through hole (511) coincides with one diameter of the sealing plate (2); A sliding rod (52) is horizontally connected to the through hole (511); an end of the sliding rod (52) close to the outside is connected to an arc-shaped abutment plate (53); and a plurality of rake teeth (531) are connected to the abutment plate (53); The driving component (54) is connected to the plate body (51) and is used to drive the sliding rod (52) to move horizontally so that the rake teeth (531) are pressed against the rock wall of the hole.
5. A water pressure test device for hydrogeological exploration drilling as claimed in claim 4, characterized in that: The driving component (54) comprises: A rotating sleeve (541) is sleeved on the sliding rod (52), an internal thread is provided inside the rotating sleeve (541), and an external thread (521) is correspondingly provided on the sliding rod (52), the rotating sleeve (541) is threadedly connected to the sliding rod (52), the rotating sleeve (541) passes through the through hole (511), and the two are rotatably connected; A limiting rod (542) is transversely fixed to one side of the plate body (51) close to the abutment plate (53), and the other end of the limiting rod (542) penetrates the abutment plate (53) and the two are slidably connected; A gear (543) fixedly sleeved on the rotating sleeve (541); The rack (544) is meshed with the gear (543), and the rack (544) drives the gear (543) to rotate through a driving member.
6. A water pressure test device for hydrogeological exploration drilling as claimed in claim 5, characterized in that: The sealing plate (2) is provided with a plurality of through holes (21) in the vertical direction at positions corresponding to the respective racks (544); a guide rod (6) is inserted into each of the through holes (21); the lower end of the guide rod (6) is fixedly connected to the upper plate surface of the floating plate (3); and the corresponding racks (544) are fixedly connected to the guide rod (6).
7. A water pressure test device for hydrogeological exploration drilling according to claim 6, characterized in that: Each of the guide rods (6) is fixedly connected to the floating plate (3) via a fixing flange.
8. A water pressure test device for hydrogeological exploration drilling as claimed in claim 4, characterized in that: The side of the rake teeth (531) away from the abutment plate (53) is in the shape of a conical spike.