Explosible choke plug water leakage treatment structure
By adding a burst head I outside the burst head, using anchor rods and water stop materials to monitor water pressure and control leakage, the existing burst head leakage problem is solved, and the safety of the structure is improved Reliability reduces engineering investment and ensures the normal operation and downstream safety of the reservoir.
Patent Information
- Application Number
- CN202411361555.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2024-12-13
AI Technical Summary
The existing burstable head is prone to leakage problems after long-term use, resulting in rust and reduced load-bearing capacity, and risk of instability and fracture. Without control leakage, it will affect the safety of the reservoir and the power generation efficiency of the power station, and its maintenance is difficult. There are safety hazards.
A water leakage treatment structure for explosive heads is designed. By adding explosive heads I outside the explosive heads, using anchor rods to generate friction with newly poured reinforced concrete pier, the water pressure is monitored by combining the water stop material of the pan and the stress gauge. Energy dissipation valve and maintenance ball valve control leakage to ensure structural safety.
It effectively solves the problem of water leakage during long-term operation of the explosive head, reduces project investment, improves the reliability and safety of the structure, avoids the risk of emptying the reservoir, and ensures the normal operation and downstream safety of the reservoir.
Smart Images
Figure CN119121870A_ABST
Abstract
Description
Technical Field
[0001] The invention 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. Summary of the invention
[0006] The technical problem to be solved by the present invention is: to provide a water leakage treatment structure with an explosive plug in view of the above-mentioned problems.
[0007] The technical solution adopted by the present invention 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] An air intake and exhaust mechanism is connected to the upper part of the explosive bulkhead I and communicates with the explosive bulkhead I and the chamber between the explosive bulkhead;
[0010] The drainage mechanism is connected to the lower part of the explosive bulkhead I and is communicated with the explosive bulkhead I and the chamber between the explosive bulkheads.
[0011] The explosive plug I is fixed by means of an anchor rod and a nut. The anchor rod is pre-buried in a reinforced concrete pier, and the reinforced concrete pier is arranged between the original plug and the concrete supporting pier.
[0012] 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.
[0013] Packing is used to stop water between the explosive blind head I and the explosive blind head.
[0014] The packing water-stopping material is polytetrafluoroethylene packing.
[0015] The air intake and exhaust mechanism comprises an air intake and exhaust pipe which is connected with the explosive plug I and the chamber between the explosive plugs, and an exhaust valve is installed on the air intake and exhaust pipe.
[0016] The drainage mechanism has a drainage pipe connected with the explosive plug I and the chamber between the explosive plugs, and a maintenance ball valve and an energy dissipation valve are installed on the drainage pipe.
[0017] The drainage mechanism is provided with a stress gauge.
[0018] The explosive plug I is provided with a stress gauge.
[0019] The anchor rod and / or flange plate are provided with a stress gauge.
[0020] The beneficial effect of the present invention is that the present invention adds an explosive blind head I outside the explosive blind head that needs to be treated for water leakage, and the explosive blind head I completely wraps the explosive blind head that needs to be treated for water leakage, so that the explosive blind head I can solve the water leakage problem occurring in the long-term operation of the explosive blind head, and solve the water leakage problem caused by the long-term inability to maintain the explosive blind head in the venting hole converted from the diversion hole of the old hydropower station.
[0021] The explosive bulkhead I added in the present invention generates friction between the anchor rod and the newly cast reinforced concrete pier to resist the water thrust formed by the water leakage of the explosive bulkhead on the new bulkhead. The stress gauge monitors the water pressure change and the energy dissipation valve empties the water leakage of the explosive bulkhead.
[0022] The invention has a simple structure, is easy to construct, can greatly save engineering investment, and has high reliability and practicability. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is a schematic diagram of the overall structure of the embodiment.
[0024] Figure 2Schematic diagram of the structure of the flange in the embodiment.
[0025] In the attached figure, 1. anchor rod; 2. flange; 3. packing water stop; 4. explosive seal head I; 5. exhaust valve; 6. drain pipe; 7. stress gauge; 8. inspection ball valve; 9. energy dissipation valve; 10. nut; 11. explosive seal head. DETAILED DESCRIPTION
[0026] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.
[0027] It should be clear that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within 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 "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.
[0029] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.
[0030] It should be noted that the directional words such as "upper", "lower", "left", and "right" described in the embodiments of the present application are described at the angles shown in the accompanying drawings and should not be understood as limiting the embodiments of the present application. In addition, in the context, it is also necessary to understand that when it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to another element "upper" or "lower", but also indirectly connected to another element "upper" or "lower" through an intermediate element.
[0031] like Figure 1 As shown, this embodiment provides an explosive bulkhead water leakage treatment structure, which includes an explosive bulkhead I, an air intake and exhaust mechanism, a drainage mechanism, an anchoring mechanism, and the like.
[0032] In this example, the explosive bulkhead I is set outside the explosive bulkhead that needs to be treated for water leakage, and the size of the explosive bulkhead I can completely cover the explosive bulkhead that needs to be treated for water leakage. The explosive bulkhead I is fixed to the newly poured reinforced concrete pier through an anchoring mechanism, and the reinforced concrete pier is set between the original plug and the concrete pier.
[0033] In this embodiment, the anchoring mechanism includes anchor rods, flanges and nuts, wherein the anchor rods are pre-buried in the newly cast reinforced concrete pier, and the friction between the anchor rods and the newly cast reinforced concrete pier resists the water thrust of the explosive plug I caused by the water leakage of the water-explosive plug; the outer ends of all anchor rods are fixed to the outer ring of the flange through nuts, and the inner ring of the flange is fixedly connected to the explosive plug I through bolts and nuts (see Figure 2 ). In this example, the flange is used as an intermediary, and the explosive plug I and the plug are connected as a whole through nuts and anchor rods.
[0034] According to the Technical Specification for Geotechnical Anchor and Shotcrete Support Engineering (GB 50086-2015), the anchor length can be calculated by the formula Determine, where T u is the upstream water pressure, d is the anchor diameter, τ is the concrete friction resistance, and N is the number of anchors.
[0035] In this example, stress gauges are required to be installed on the anchor rod, flange plate, and explosive bulkhead Ⅰ, and the stress conditions at the anchor rod, flange plate, and explosive bulkhead Ⅰ are monitored by the stress gauges.
[0036] In order to reduce the internal pressure of the explosive bulkhead I, an air intake and exhaust mechanism is arranged on the top of the explosive bulkhead I. The air intake and exhaust mechanism has an air intake and exhaust pipe connected to the explosive bulkhead I and connected to the chamber between the explosive bulkhead I and the explosive bulkhead, and an exhaust valve is installed on the air intake and exhaust pipe.
[0037] In order to drain the water leakage from the explosive bulkhead, a drainage mechanism is arranged at the bottom of the explosive bulkhead I. The drainage mechanism has a drainage pipe connected to the explosive bulkhead I and connected to the chamber between the explosive bulkhead I and the explosive bulkhead. A maintenance ball valve, a stress gauge and an energy dissipation valve are arranged in sequence on the drainage pipe along the water flow direction. The stress gauge is used to measure the change of water pressure in the pipe; the energy dissipation valve is used to control the discharge of water. The energy 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 inspect the energy dissipation valve.
[0038] In order to prevent water leakage from the explosive blind head I, packing is used between the explosive blind head I and the explosive blind head. The packing water-stopping material is polytetrafluoroethylene packing, and its material strength can meet the requirements of sealing 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 structure for handling water leakage with explosive plugs, characterized in that: include: 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; An air intake and exhaust mechanism is connected to the upper part of the explosive bulkhead I and communicates with the explosive bulkhead I and the chamber between the explosive bulkhead; The drainage mechanism is connected to the lower part of the explosive bulkhead I and is communicated with the explosive bulkhead I and the chamber between the explosive bulkheads.
2. The explosive plug leakage treatment structure according to claim 1 is characterized in that: The explosive plug I is fixed by means of an anchor rod and a nut. The anchor rod is pre-buried in a reinforced concrete pier, and the reinforced concrete pier is arranged between the original plug and the concrete supporting pier.
3. The explosive plug leakage treatment structure according to claim 2 is characterized in that: 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 explosive plug leakage treatment structure according to claim 1 is characterized in that: Packing is used to stop water between the explosive blind head I and the explosive blind head.
5. The explosive plug leakage treatment structure according to claim 4 is characterized in that: The packing water-stopping material is polytetrafluoroethylene packing.
6. The explosive plug leakage treatment structure according to claim 1 is characterized in that: The air intake and exhaust mechanism comprises an air intake and exhaust pipe which is connected with the explosive plug I and the chamber between the explosive plugs, and an exhaust valve is installed on the air intake and exhaust pipe.
7. The explosive plug leakage treatment structure according to claim 1 is characterized in that: The drainage mechanism has a drainage pipe connected with the explosive plug I and the chamber between the explosive plugs, and a maintenance ball valve and an energy dissipation valve are installed on the drainage pipe.
8. The explosive plug leakage treatment structure according to claim 1 is characterized in that: A stress gauge is provided on the drainage mechanism.
9. The explosive plug leakage treatment structure according to claim 1 is characterized in that: The explosive plug I is provided with a stress gauge.
10. The explosive plug leakage treatment structure according to claim 3 is characterized in that: The anchor rod and / or flange plate are provided with a stress gauge.