Orifice sealer for grouting structure
By combining the casing, the orifice fixing plate, and the expansion rubber fixing device, the water-injected expansion rubber applies pressure to the borehole wall, solving the friction problem during the lowering of the drill rod or grouting pipe, achieving stable lowering and sealing effects, and reducing material consumption and costs.
Patent Information
- Application Number
- CN202520399243.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-07
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-03-07
AI Technical Summary
Existing orifice sealers are difficult to lower due to excessive friction during the lowering of drill rods or grouting pipes, leading to wear, deformation, or damage of the grout stopper and affecting the grouting effect.
The system employs a combination structure consisting of a casing, a borehole fixing plate, an expansion rubber retainer, and a water-injection expansion assembly. By injecting water and expanding the rubber, pressure is applied to the borehole wall, and friction is used to fix the drill rod or grouting pipe. The grouting pipe is then secured with clamps to prevent wear and falling during the lowering process.
It enables stable lowering of drill rods or grouting pipes, avoids device wear, improves sealing effect and application range, reduces material consumption and cost, and has green and environmentally friendly characteristics.
Smart Images
Figure CN223838138U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of grouting orifice sealing technology for fully, strongly, and weakly weathered granite curtain walls, and particularly to an orifice sealer for grouting structures. Background Technology
[0002] Pumped storage is a technology that utilizes the low load of the power system to convert electricity into the potential energy of water for storage, and releases the potential energy of the water to generate electricity through turbines during peak load periods. Solving the seepage and leakage problems in fully and strongly weathered granite strata is an important step in realizing pumped storage, promoting the application of renewable energy, and achieving sustainable development and a low-carbon economic transformation.
[0003] With the rapid development of renewable energy and the continuous increase in electricity demand, pumped storage, as an important power storage technology, can balance grid load, stabilize power supply, reduce carbon emissions, and help reduce power production and dispatch costs. However, the effectiveness of dam foundation seepage prevention and reinforcement directly affects the feasibility of pumped storage. In engineering practice, seepage prevention and reinforcement of dam foundations often employs cutoff walls and curtain grouting. In areas with severely fractured strata and fully developed fissures, poor sealing during grouting often results in grout escaping from the orifices. This often leads to insufficient grouting pressure, failing to effectively seal cracks or pores, and severely affecting the dam's seepage prevention and plugging effect.
[0004] Currently, orifice sealers are widely used in grouting operations. Existing orifice sealers typically use rubber grout stoppers and have relatively limited functionality. In actual construction, when the drill rod or grouting pipe passes through the sealer, it is often difficult to lower due to excessive friction. Even if it is successfully lowered, this can lead to severe wear, deformation, or even damage to the grout stopper. Utility Model Content
[0005] In view of this, this utility model proposes a borehole sealer for grouting structures, which can solve the problem that the drill rod or grouting pipe is difficult to lower due to excessive friction when passing through the sealer.
[0006] The technical solution of this utility model is implemented as follows:
[0007] This utility model provides an orifice sealer for grouting structures, comprising:
[0008] A casing, wherein a channel is provided inside the casing for engaging with a grouting pipe;
[0009] An orifice fixing plate is disposed on the protective sleeve, and a water injection hole is provided on the orifice fixing plate;
[0010] An expanding rubber retainer is disposed on the protective sleeve and spaced apart from the orifice fixing plate; and
[0011] The water-injection expansion assembly is connected to the water injection hole and is fixedly disposed between the hole fixing plate and the expansion rubber fixing device. The water-injection expansion assembly includes an internal water-injection expansion rubber and an external water-injection expansion rubber. The internal water-injection expansion rubber is disposed in the channel, and the external water-injection expansion rubber is disposed on the outside of the protective sleeve.
[0012] Based on the above technical solutions, preferably, the orifice fixing plate is used to cooperate with the orifice, and the diameter of the orifice fixing plate is larger than the diameter of the orifice.
[0013] Based on the above technical solutions, preferably, the protective sleeve includes a first section and a second section connected to each other, the water injection expansion component is disposed on the second section, and the inner diameter of the second section is larger than the inner diameter of the first section.
[0014] More preferably, it also includes a movable clamp for holding the grouting pipe.
[0015] More preferably, the clamp is located on the side of the first segment away from the second segment.
[0016] More preferably, the device also includes a fixed base and a movable rod, wherein the fixed base is disposed on the orifice fixing plate, the movable rod is movably disposed on the fixed base along the radial direction of the channel, and the clamp is disposed on the movable rod.
[0017] More preferably, the fixed base has a mating hole extending through it along the movement direction of the movable rod, and the movable rod is inserted into the mating hole.
[0018] Based on the above technical solutions, preferably, the movable rod includes a telescopic rod.
[0019] More preferably, it also includes a handle, with the handle and the clamp located at opposite ends of the movable rod, respectively.
[0020] More preferably, the longest dimension of the handle based on the projection of the fixed base is greater than the diameter of the mating hole.
[0021] The orifice sealing device for grouting structures of this invention has the following advantages over the prior art:
[0022] (1) The channel of the casing is used to cooperate with the grouting pipe to realize the lowering of the grouting pipe. The upper and lower sides of the water injection expansion component are restricted by the orifice fixing plate and the expansion rubber fixing device, thereby ensuring the stability of the position of the water injection expansion component. Water is injected into the external water injection expansion rubber through the water injection hole. The external water injection expansion rubber expands and applies pressure to the orifice wall, and the friction between the two plays a role in fixing it in the orifice. Water is injected into the internal water injection expansion rubber through the water injection hole. After the water injection expansion, it can play a role in sealing the orifice and can also stably fix the grouting pipe in the orifice sealing device.
[0023] (2) By clamping the grouting pipe with a clamp, the grouting pipe is fixed, which avoids the drilling rod or grouting pipe falling into the hole due to construction operation errors during the construction operation of lowering the grouting pipe or drill rod; and by setting the clamp to be movable, the position of the clamp can avoid interference with the lowering of the grouting pipe.
[0024] (3) When curtain grouting is carried out on fully and strongly weathered granite strata, the friction between the external water-injected expansion rubber and the borehole wall is low and the fixing effect is poor due to the severe weathering and complete development of the strata and the fully developed fissures. In this case, a fixing cylinder can be installed at the borehole opening to fix the borehole sealer inside the fixing cylinder, which can also achieve the effect of fixing inside the borehole and improve the application range of the device. Attached Figure Description
[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0026] Figure 1 This is a front view of the orifice sealer for grouting structures according to this utility model;
[0027] Figure 2 This is a side view of the orifice sealer for grouting structures according to the present invention;
[0028] Figure 3 This is a top view of the orifice sealer for grouting structures according to this utility model;
[0029] Figure 4 This is a schematic diagram of the orifice sealer of this utility model used in grouting structures in use;
[0030] Figure label:
[0031] 1. Handle; 2. Fixing base; 3. Orifice fixing plate; 4. Internal water-injected expansion rubber; 5. External water-injected expansion rubber; 6. Expansion rubber fixing device; 7. Movable rod; 8. Clamp; 9. Protective sleeve; 10. Water injection hole; 11. First section; 12. Second section; 13. Water injection expansion assembly; 14. Channel. Detailed Implementation
[0032] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.
[0033] like Figures 1 to 4 As shown, this utility model provides an orifice sealer for a grouting structure. The orifice sealer includes a protective sleeve 9, an orifice fixing plate 3, an expansion rubber fixing device 6, and a water injection expansion assembly 13. The protective sleeve 9 has a channel 14 inside, which is used to cooperate with the grouting pipe. The orifice fixing plate 3 is disposed on the protective sleeve 9 and has a water injection hole 10. The expansion rubber fixing device 6 is disposed on the protective sleeve 9 and spaced apart from the orifice fixing plate 3. The water injection expansion assembly 13 communicates with the water injection hole 10 and is fixedly disposed between the orifice fixing plate 3 and the expansion rubber fixing device 6. The water injection expansion assembly 13 includes an inner water injection expansion rubber 4 and an outer water injection expansion rubber 5. The inner water injection expansion rubber 4 is disposed inside the channel 14, and the outer water injection expansion rubber 5 is disposed outside the protective sleeve 9.
[0034] The channel 14 of the casing 9 is used to cooperate with the grouting pipe to lower the grouting pipe. The upper and lower sides of the water injection expansion assembly 13 are restricted by the orifice fixing plate 3 and the expansion rubber retainer 6, thereby ensuring the stability of the position of the water injection expansion assembly 13. Water is injected into the external water injection expansion rubber 5 through the water injection hole 10. The external water injection expansion rubber 5 expands and applies pressure to the orifice wall, and the friction between the two serves to fix it in the orifice. Water is injected into the internal water injection expansion rubber 4 through the water injection hole 10. After expansion, it can seal the orifice and also stably fix the grouting pipe in the orifice sealer.
[0035] This water-expansion orifice sealer has a simple structure and requires less manpower and resources during construction. During installation, the orifice sealer has a large diameter, making it easy to lower the drill rod. After installation, water can be injected to expand its internal structure, thus achieving a seal and fixation.
[0036] During construction, the orifice sealer can adjust the orifice diameter by injecting water and pressurizing it, which avoids wear and deformation of the orifice sealer during the process of drilling the rod or grouting pipe, and improves the durability of the orifice sealer. By increasing the friction between the internal water-injected expansion rubber 4 and the drill rod or grouting pipe, a better sealing effect can be achieved.
[0037] To ensure structural strength, the casing 9 can be made of materials such as aluminum alloy or steel. The internal channels 14 of the casing 9 reduce material consumption and costs, while also reducing weight and facilitating transportation. Simultaneously, it reduces the use of resources such as iron ore and coke. The designed orifice sealer has a long lifespan, significantly reducing the generation of waste rubber and lowering the consumption of non-renewable resources such as petroleum during rubber production. Therefore, this orifice sealer is not only environmentally friendly but also helps reduce material waste and improve economic efficiency.
[0038] In summary, the orifice sealer for grouting structures provided in this application can achieve the effects of convenient on-site construction, excellent sealing effect, good durability, low economic cost, and green environmental protection.
[0039] The expansion rubber fastener 6 can be any fastener that can fix the water-injection expansion component 13. In this application, the expansion rubber fastener 6 adopts an I-shaped water-injection expansion rubber lower end fastener.
[0040] The orifice fixing plate 3 is fixedly mounted on the protective sleeve 9, such as by welding or riveting; or it can be detachably mounted on the protective sleeve 9, such as by means of clips or screws. In this application, the orifice fixing device is welded to the protective sleeve 9. It can be understood that the expansion rubber fixing device 6 can also be fixedly or detachably mounted on the protective sleeve 9, and the connection method can be the same as the connection method of the orifice fixing plate 3.
[0041] The orifice fixing plate 3 is used to cooperate with the orifice. The diameter of the orifice fixing plate 3 is larger than the diameter of the orifice. The orifice fixing device can be attached to the orifice, which facilitates construction operations and prevents the entire device from falling into the hole. At the same time, the orifice fixing plate 3 is used to fix the upper end of the water injection expansion component 13.
[0042] In some embodiments, the casing 9 includes a first section 11 and a second section 12 connected to each other. The water-injection expansion component 13 is disposed on the second section 12, and the inner diameter of the second section 12 is larger than the inner diameter of the first section 11. The first section 11 and the second section 12 are integrally formed, which can ensure the structural strength of the casing 9. The second section 12 is used to cooperate with the water-injection expansion component 13. Specifically, the internal water-injection expansion rubber 4 is disposed on the inner wall of the second section 12 and is used to cooperate with the grouting pipe inserted into the second section 12. The external water-injection expansion rubber 5 is disposed on the outer wall of the second section 12 and is used to cooperate with the hole wall. By setting the diameter of the second section 12 to be larger, it can provide a place for the internal water-injection expansion rubber 4 and provide space for the internal water-injection expansion rubber 4 to expand. It can also facilitate the lowering of the grouting pipe and avoid interference between the grouting pipe and the internal water-injection expansion rubber 4 during the lowering process.
[0043] The orifice sealer provided in this application also includes a movable clamp 8 for holding the grouting pipe. During water injection to seal the orifice, the clamp 8 holds the grouting pipe in place, preventing it from falling into the hole. Furthermore, during the lowering of the grouting pipe or drill rod, the clamp 8 prevents the drill rod or grouting pipe from falling into the hole due to operational errors. Moreover, by making the clamp 8 movable, interference with the lowering of the grouting pipe can be avoided.
[0044] Optionally, the clamp 8 is located on the side of the first segment 11 away from the second segment 12; after the orifice closure is placed in the orifice, the clamp 8 can be located in the area above the orifice, and the clamp 8 has a larger range of motion, making it easier to operate.
[0045] The orifice closure device also includes a fixed base 2 and a movable rod 7. The fixed base 2 is disposed on the orifice fixing plate 3, and the movable rod 7 is movably disposed on the fixed base 2 along the radial direction of the channel 14. The clamp 8 is disposed on the movable rod 7. The fixed base 2 is welded and fixed to the orifice fixing plate 3, and the clamp 8 is placed on the movable rod 7. The movement of the movable rod 7 drives the clamp 8 to move synchronously, thus realizing the movement of the clamp 8. To ensure the stability of the clamp 8, the clamp 8 can be welded and fixed to the movable rod 7. The fixed base 2 serves to fix the movable rod 7 and the clamp 8 longitudinally, and also serves to connect them through welding to the orifice fixing plate 3.
[0046] Of course, the movement of the movable rod 7 on the fixed base 2 can be manually driven or driven by a driver. The driver can be a component such as a cylinder or a motor. The movable rod 7 can be connected to a suitable driver according to different application scenarios to realize the movement.
[0047] Optionally, the fixed base 2 is provided with a mating hole through the moving direction of the movable rod 7, and the movable rod 7 is inserted into the mating hole; by setting the movable rod 7 through the fixed base 2, the mating hole can limit and guide the movement of the movable rod 7, ensuring the stability and reliability of the movement, and thus ensuring the reliability of the use of the clamp 8.
[0048] The movable rod 7 includes a telescopic rod, and the movement of the clamp 8 can also be achieved through the telescopic effect of the telescopic rod.
[0049] For ease of use, the orifice closure device also includes a handle 1. The handle 1 and the clamp 8 are located at the two ends of the movable rod 7, respectively. The handle 1 can be manually operated to drive the movable rod 7 to move and send the clamp 8 into the orifice. The handle 1 and the movable rod 7 can be welded and fixed to form a whole to ensure structural strength.
[0050] The longest dimension of the handle 1 based on the projection of the fixed base 2 is greater than the diameter of the mating hole. In other words, the handle 1 and the clamp 8 can be stably located on opposite sides of the fixed base 2, ensuring the safety of the device.
[0051] Of course, the orifice sealer for grouting structures also includes a fixing cylinder, which can be a steel cylinder. The fixing cylinder is used to fix the orifice opening and is solidified by pouring cement grout. The external water-swellable rubber 5 cooperates with the fixing cylinder. When performing curtain grouting construction on fully or strongly weathered granite strata, if the strata are severely weathered and the fissures are fully developed, resulting in low friction between the external water-swellable rubber 5 and the borehole wall and poor fixing effect, a fixing cylinder can be installed at the orifice opening to fix the orifice sealer inside the fixing cylinder, which can also achieve the effect of fixing inside the borehole.
[0052] The orifice sealer for grouting structures provided in this application can be used in accordance with the following steps:
[0053] Step S1: Insert the orifice sealer directly into the orifice;
[0054] Step S2: Insert the grouting pipe into the sleeve and fix it with clamp 8;
[0055] Step S3: Connect the water injection pressurization device to the water injection hole 10 of the orifice sealer;
[0056] Step S4: Water is injected into the external water-injecting expansion rubber 5 and the internal water-injecting expansion rubber 4 using a water injection pressurization device. This causes the internal water-injecting expansion rubber 4 to expand, reducing the borehole diameter and gradually sealing the borehole opening. The external water-injecting expansion rubber 5 expands and is fixed to the borehole wall. If the formation is severely fractured and has low strength, a fixing cylinder can be installed inside the borehole opening to fix the borehole sealer inside the fixing cylinder, thereby enhancing the fixing effect.
[0057] Step S5: After sealing the orifice, perform grouting.
[0058] like Figures 1 to 4 As shown above, the orifice sealer for grouting structures provided in this application embodiment employs an external water-injection and expansion method for the external water-injection and expansion rubber 5. After water is injected into the external water-injection and expansion rubber 5, the external orifice diameter increases, generating and increasing friction on the orifice wall to fix the orifice sealer to the orifice wall. Simultaneously, an internal water-injection and expansion method is used, where water is injected into the internal water-injection and expansion rubber 4, reducing the internal orifice diameter to achieve orifice sealing. To improve the versatility of the sealer, the orifice sealer provided in this application also includes a clamp 8. The clamp 8 facilitates the lowering of the grouting pipe or drill rod during construction operations, while preventing the drill rod or grouting pipe from falling into the hole due to operational errors.
[0059] 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. An orifice sealer for grouting structures, characterized in that, include: A casing (9) is provided with a channel (14) inside the casing (9), and the channel (14) is used to cooperate with the grouting pipe; A hole fixing plate (3) is provided on the protective sleeve (9), and a water injection hole (10) is provided on the hole fixing plate (3); An expanding rubber retainer (6) is disposed on the protective sleeve (9) and spaced apart from the orifice fixing plate (3); and The water-injection expansion assembly (13) is connected to the water injection hole (10) and is fixedly disposed between the orifice fixing plate (3) and the expansion rubber fixing device (6). The water-injection expansion assembly (13) includes an internal water-injection expansion rubber (4) and an external water-injection expansion rubber (5). The internal water-injection expansion rubber (4) is disposed in the channel (14), and the external water-injection expansion rubber (5) is disposed on the outside of the protective sleeve (9).
2. The orifice sealer for grouting structures as described in claim 1, characterized in that: The orifice fixing plate (3) is used to fit with the orifice, and the diameter of the orifice fixing plate (3) is larger than the diameter of the orifice.
3. The orifice sealer for grouting structures as described in claim 1, characterized in that: The casing (9) includes a first section (11) and a second section (12) connected to each other. The water injection expansion component (13) is disposed on the second section (12). The inner diameter of the second section (12) is larger than the inner diameter of the first section (11).
4. The orifice sealer for grouting structures as described in claim 3, characterized in that: It also includes a movable clamp (8) for holding the grouting pipe.
5. The orifice sealer for grouting structures as described in claim 4, characterized in that: The clamp (8) is located on the side of the first segment (11) away from the second segment (12).
6. The orifice sealer for grouting structures as described in claim 5, characterized in that: It also includes a fixed seat (2) and a movable rod (7). The fixed seat (2) is disposed on the orifice fixing plate (3). The movable rod (7) is movably disposed on the fixed seat (2) along the radial direction of the channel (14). The clamp (8) is disposed on the movable rod (7).
7. The orifice sealer for grouting structures as described in claim 6, characterized in that: The fixed base (2) has a mating hole through it along the movement direction of the movable rod (7), and the movable rod (7) is inserted into the mating hole.
8. The orifice sealer for grouting structures as described in claim 6, characterized in that, The movable rod (7) includes a telescopic rod.
9. The orifice sealer for grouting structures as described in claim 7, characterized in that: It also includes a handle (1), and the handle (1) and the clamp (8) are located at the two ends of the movable rod (7), respectively.
10. The orifice sealer for grouting structures as described in claim 9, characterized in that: The longest dimension of the handle (1) based on the projection of the fixed base (2) is greater than the diameter of the mating hole.