Explosible choke plug water leakage treatment structure
By adding a burstable head I outside the burstable head, and combining anchor fixing, intake and exhaust and drainage mechanisms, the leakage problem of the burstable head is solved, the structure safety and controllable discharge are achieved, and the engineering investment is reduced.
Patent Information
- Application Number
- CN202422385820.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-09-27
AI Technical Summary
The existing long-term leakage problem of the existing explosive head in the reservoir leads to rust the bolt, which poses a risk of instability and fracture, and the flow rate is too high when discharge is not controlled, which affects the power generation efficiency and downstream safety of the power station.
A blow-able head I was added outside the blow-able head, which was fixed with the newly poured reinforced concrete pier through anchor rods, combined with the intake and exhaust and drainage mechanism, and monitoring with polytetrafluoroethylene pan water stop and stress gauge to control the discharge water flow.
It effectively solves the problem of water leakage in the explosive head, reduces project investment, ensures structural safety and controllable discharge, and avoids the risk of sudden bursting.
Smart Images
Figure CN223119016U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an explosive plug water leakage treatment structure, which is applicable to the technical field of water leakage treatment. Background Art
[0002] A drain hole is one or more channels set up in a reservoir dam. It has the function of quickly discharging reservoir water in an emergency, reducing the pressure on the dam and preventing disasters; and when the reservoir needs regular maintenance and overhaul, the drain hole can be used to lower the reservoir water level to ensure the normal operation of the dam and its ancillary facilities.
[0003] In conventional hydropower stations built in the early days, the venting holes were often converted from diversion tunnels, and disposable explosive plugs were used in the diversion tunnels to meet the requirements of rapid discharge of reservoir water in emergency situations. The advantage of such measures is that they save investment, but since the explosive plugs cannot freely control the discharge, the diversion tunnel gates block water for a long time, and the gate leaves, gate grooves and pull rods are generally rusted. The worst case scenario may be that the upstream of the explosive plug is completely connected to the reservoir. After long-term use, the explosive plugs and bolts have been severely corroded, the bearing capacity of the bolts is reduced, and there is a risk of instability and fracture.
[0004] Since the flow rate is too high during uncontrolled discharge of explosive caps, once the bolts break due to long-term water leakage, subsequent treatment will be very difficult and the reservoir will be at risk of being emptied, affecting the power generation efficiency of the power station. At the same time, sudden uncontrolled discharge will affect the operation of the downstream river channel, threatening the safety of people and ships in the river, and personnel and equipment on both sides of the river.
[0005] Since the upstream of the explosive bung may be connected to the reservoir, it is very difficult to carry out construction and repair during the operation of the reservoir. It is necessary to ensure construction safety and not affect the normal operation of the reservoir. It is extremely risky to rashly inspect and repair the explosive bung directly. The current treatment method for water leakage in the explosive bung is mainly to locate the leakage point and then use corrosion-resistant and high-pressure resistant high-performance sealing materials to improve the sealing performance and service life. However, under the action of pressurized water, this method may cause the explosive bung to burst suddenly without warning, threatening downstream safety. Utility Model Content
[0006] The technical problem to be solved by the utility model is: to provide a water leakage treatment structure with an explosive plug in view of the above-mentioned existing problems.
[0007] The technical solution adopted by the utility model is: a structure for handling water leakage with explosive plugs, characterized in that it comprises:
[0008] An explosive bulkhead I is arranged outside the explosive bulkhead that needs to be treated for water leakage, and the explosive bulkhead I wraps the explosive bulkhead;
[0009] The intake and exhaust mechanism is connected to the upper part of the explosive plug Ⅰ and communicates with the chamber between the explosive plug Ⅰ and the other explosive plug.
[0010] The drainage mechanism is connected to the lower part of the explosive plug Ⅰ and communicates with the chamber between the explosive plug Ⅰ and the other explosive plug.
[0011] The explosive plug Ⅰ is fixed by bolts and nuts. The bolts are embedded in the reinforced concrete pier, and the reinforced concrete pier is arranged between the original plug and the concrete pier.
[0012] The outer end of the bolt is connected to the outer ring of the flange through a nut, and the inner ring of the flange is fixedly connected to the explosive plug Ⅰ through bolts and nuts.
[0013] The space between the explosive plug Ⅰ and the other explosive plug is sealed with packing.
[0014] The packing sealing material is polytetrafluoroethylene packing.
[0015] The intake and exhaust mechanism has an intake and exhaust pipe communicating with the chamber between the explosive plug Ⅰ and the other explosive plug, and an exhaust valve is installed on the intake and exhaust pipe.
[0016] The drainage mechanism has a drainage pipe communicating with the chamber between the explosive plug Ⅰ and the other explosive plug, and a maintenance ball valve and an energy dissipation valve are installed on the drainage pipe.
[0017] A stress gauge is installed on the drainage mechanism.
[0018] A stress gauge is installed on the explosive plug Ⅰ.
[0019] A stress gauge is installed on the bolt and / or the flange.
[0020] The beneficial effects of the present utility model are as follows: By adding an explosive plug Ⅰ outside the explosive plug that needs leakage treatment, the explosive plug Ⅰ completely wraps the explosive plug that needs leakage treatment, so as to solve the leakage problem that occurs during the long-term operation of the explosive plug through the explosive plug Ⅰ, and solve the problem of water leakage caused by the long-term inability to repair the explosive plug in the discharge hole converted from the diversion tunnel in the old hydropower station.
[0021] The added explosive plug Ⅰ of the present utility model generates frictional force with the newly poured reinforced concrete pier by the bolt to resist the water thrust formed by the leakage of the explosive plug, monitors the water pressure change by the stress gauge, and discharges the leakage of the explosive plug by the energy dissipation valve.
[0022] The structure of the present utility model is simple and the construction is convenient, which can greatly save the project investment and has high reliability and practicability. Description of the Drawings
[0023] Figure 1Schematic diagram of the overall structure of the embodiment.
[0024] Figure 2 Schematic diagram of the flange structure in the embodiment.
[0025] In the drawings, 1, anchor rod; 2, flange; 3, packing water stop; 4, explosive plug I; 5, exhaust valve; 6, drain pipe; 7, stress gauge; 8, maintenance ball valve; 9, energy dissipation valve; 10, nut; 11, explosive plug. Specific embodiments
[0026] In order to better understand the technical solution of the present application, the embodiments of the present application will be described in detail below with reference to the drawings.
[0027] It should be clear that the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope of protection of the present application.
[0028] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms of "a", "the" and "said" used in the embodiments of the present application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.
[0029] It should be understood that the term " / and / " used herein is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B, which can mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after.
[0030] It should be noted that the orientation terms such as "upper", "lower", "left", and "right" described in the embodiments of the present application are described from the angles shown in the drawings, and should not be construed as a limitation on the embodiments of the present application. In addition, in the context, it should also be understood that when it is mentioned that an element is connected "above" or "below" another element, it can not only be directly connected "above" or "below" another element, but also be indirectly connected "above" or "below" another element through an intermediate element.
[0031] As Figure 1 shown, this embodiment provides a structure for dealing with water leakage of an explosive plug, and the water leakage treatment structure includes an explosive plug I, an air intake and exhaust mechanism, a drainage mechanism, an anchoring mechanism, etc.
[0032] In this example, the explosive plug I is arranged outside the explosive plug that needs to be treated for water leakage, and the size of the explosive plug I can completely wrap the explosive plug that needs to be treated for water leakage. The explosive plug I is fixed to the newly poured reinforced concrete pier through the anchoring mechanism, and the reinforced concrete pier is arranged between the original plug and the concrete pier.
[0033] In this embodiment, the anchoring mechanism includes anchor bolts, flange plates and nuts. Among them, the anchor bolts are embedded in the newly poured reinforced concrete pier, and the friction force generated by the anchor bolts and the newly poured reinforced concrete pier resists the water thrust formed by the water leakage of the explosive plug on the explosive plug I; the outer ends of all the anchor bolts are fixed to the outer ring of the flange plate through nuts, and the inner ring of the flange plate is fixedly connected to the explosive plug I through bolts and nuts (see Figure 2 ). In this example, the flange plate serves as an intermediary to connect the explosive plug I and the plug into a whole through nuts and anchor bolts.
[0034] According to the "Technical Code for Rock and Soil Anchor Bolts and Shotcrete Support Engineering" (GB 50086-2015), the length of the anchor bolt can be determined by the formula where T u is the upstream water pressure, d is the diameter of the anchor bolt, τ is the concrete friction resistance, and N is the number of anchor bolts.
[0035] In this example, stress gauges need to be installed on the anchor bolts, flange plates and explosive plug I to monitor the stress conditions at the anchor bolts, flange plates and explosive plug I through the stress gauges.
[0036] In order to reduce the internal pressure of the explosive plug I, an air inlet and exhaust mechanism is arranged at the top of the explosive plug I. The air inlet and exhaust mechanism has an air inlet and exhaust pipe connected to the explosive plug I and communicating with the chamber between the explosive plug I and the explosive plug, and an exhaust valve is installed on the air inlet and exhaust pipe.
[0037] In order to drain the water leakage of the explosive plug, a drainage mechanism is arranged at the bottom of the explosive plug I. The drainage mechanism has a drainage pipe connected to the explosive plug I and communicating with the chamber between the explosive plug I and the explosive plug. A maintenance ball valve, a stress gauge and a dissipation valve are arranged in sequence along the water flow direction on the drainage pipe. Among them, the stress gauge is used to measure the change of water pressure in the pipe; the dissipation valve is used to control the discharge of water, and the dissipation valve adopts a cone valve, and the discharge capacity only needs to be greater than the leakage amount; the maintenance ball valve is used to maintain the dissipation valve.
[0038] To prevent the problem of water leakage and seepage of the explosive plug I, packing sealing is adopted between the explosive plug I and the explosive plug. The packing sealing material is polytetrafluoroethylene packing, and its material strength only needs to meet the requirements of sealing performance and corrosion resistance.
[0039] In extreme cases, the explosive bulkhead is connected to the reservoir upstream, and it is extremely risky to directly inspect and repair the explosive bulkhead. A new bulkhead (explosive bulkhead I) is wrapped outside the explosive bulkhead. Without directly handling the explosive bulkhead, the new bulkhead's built-in energy dissipation valve is used to control the discharge of water leakage from the explosive bulkhead, the anchor rods resist the water thrust, and the stress gauge monitors the water pressure changes to ensure that the structural safety is within a controllable range.
[0040] The specific construction steps of this embodiment are as follows:
[0041] Step 001, pouring reinforced concrete piers between the original plug and the concrete pier, and all anchor rods are pre-buried in the new concrete pier;
[0042] Step 002: All anchor rods are fixed to the outer ring of the flange by bolts;
[0043] Step 003: After the flange and anchor are fixed, start installing the explosive bulkhead I. During the installation process, open the energy dissipation valve to drain the water from the explosive bulkhead;
[0044] Step 004: Install packing water stop between the explosive bulkhead I and the explosive bulkhead. Step 005: After the new bulkhead is installed, close the energy dissipation valve.
Claims
1. A treatment structure for leakage of an explosive plug, characterized in that Comprising: An explosive plug Ⅰ, which is arranged outside the explosive plug where water leakage treatment is required, and the explosive plug Ⅰ wraps the explosive plug; An air inlet and exhaust mechanism, which is connected to the upper part of the explosive plug Ⅰ and communicates with the chamber between the explosive plug Ⅰ and the explosive plug; A drainage mechanism, which is connected to the lower part of the explosive plug Ⅰ and communicates with the chamber between the explosive plug Ⅰ and the explosive plug; 2. The leak treatment structure for the explosive blind head according to claim 1, wherein: The explosive plug Ⅰ is fixed by an anchor rod and a nut. The anchor rod is embedded in the reinforced concrete pier, and the reinforced concrete pier is arranged between the original plug and the concrete pier.
3. The leak treatment structure for the explosive blind head according to claim 2, wherein: The outer end of the anchor rod is connected to the outer ring of the flange through a nut, and the inner ring of the flange is fixedly connected to the explosive plug Ⅰ through bolts and nuts.
4. The leak treatment structure for the explosive plug according to claim 1, characterized in that: A packing gland is used for water stop between the explosive plug Ⅰ and the explosive plug.
5. The leak treatment structure for the explodable blind head according to claim 4, characterized in that: The packing gland water stop material is polytetrafluoroethylene packing.
6. The water leakage treatment structure of the explosive plug according to claim 1, characterized in that: The air inlet and exhaust mechanism has an air inlet and exhaust pipe communicating with the chamber between the explosive plug Ⅰ and the explosive plug, and an exhaust valve is installed on the air inlet and exhaust pipe.
7. The water leakage treatment structure of the explodable blind head according to claim 1, wherein: The drainage mechanism has a drainage pipe communicating with the chamber between the explosive plug Ⅰ and the explosive plug, and a maintenance ball valve and an energy dissipation valve are installed on the drainage pipe.
8. The water leakage treatment structure of the explosive plug according to claim 1, wherein: A stress gauge is provided on the drainage mechanism.
9. The leak treatment structure for the explosive plug according to claim 1, characterized in that: A stress gauge is provided on the explosive plug Ⅰ.
10. The water leakage treatment structure for the explosive plug according to claim 3, characterized in that: A stress gauge is provided on the anchor rod and / or the flange.