CN210031701U

CN210031701U - Vertical automatic energy dissipation and vibration reduction regulation and control system for gate

Info

Publication number: CN210031701U
Application number: CN201920137578.XU
Authority: CN
Inventors: 徐国宾; 王延召; 何军龄
Original assignee: Tianjin University
Current assignee: Tianjin University
Priority date: 2019-01-25
Filing date: 2019-01-25
Publication date: 2020-02-07
Anticipated expiration: 2029-01-25

Abstract

The utility model discloses a vertical automatic energy dissipation and vibration reduction regulation and control system for a gate, which is arranged in the lower space of a cross beam at the lower part of the gate and comprises an energy dissipation plate and an energy dissipation and vibration reduction mechanism, wherein the energy dissipation and vibration reduction mechanism consists of an upper connecting rod, a first energy dissipation device, a balancing body, a second energy dissipation device and a lower connecting rod which are sequentially connected from top to bottom, and the first energy dissipation device and the second energy dissipation device consist of a spring element and a damping element which are arranged in parallel; the vibration elimination plates are arranged below the energy dissipation and vibration reduction mechanism at equal intervals along the width direction of the gate, the front end and the rear end of each vibration elimination plate are respectively connected with the lower connecting rod of the energy dissipation and vibration reduction mechanism, and the upper connecting rod of the energy dissipation and vibration reduction mechanism is connected with the lower cross beam. The system can reduce the vertical vibration effect of the gate, effectively dissipate the energy of the vertical hydrodynamic load acting on the bottom edge of the gate, reduce the fatigue damage of the vertical vibration of the gate to the pull rod and the upper opening and closing mechanism, and ensure the effective and safe operation of gate facilities.

Description

Vertical automatic energy dissipation and vibration reduction regulation and control system for gate

Technical Field

This patent belongs to gate damping design technical field among the hydraulic engineering, especially relates to the regulation and control system who realizes reducing the function of the vertical vibration of gate.

Background

The problem of flow-induced vibration of the hydraulic gate is an important factor influencing the efficient, safe and stable operation of hydraulic engineering. When water flows through the bottom edge of the gate, the area of the flow cross section is reduced, and the flow velocity of the water flow is higher than that of other positions. The water blocking effect of the gate causes the flow field under the gate to change, the bottom edge position of the gate is always provided with non-uniform pulsating pressure load, and the hydrodynamic load is a direct factor causing the vertical vibration of the gate. The non-uniform hydrodynamic load on the bottom edge of the gate directly acts on the gate body of the gate, so that the gate vibrates in the vertical direction, the continuous gate vibration can cause serious damage to a hanging ring, a pull rod and upper opening and closing equipment of the gate, especially for the gates in some high-head hydropower stations, high-dam drainage tunnels and other drainage structures, the hydrodynamic load has more serious damage to the vertical vibration effect of the gate and the damage to a gate mechanism, and once the hydraulic load fails, the hydraulic load can have serious influence on the engineering itself, downstream riverways and social activities.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming not enough among the prior art, provide one kind to the vertical automatic energy dissipation damping regulation and control system of gate, this system can reduce the vertical vibration effect of gate for the perpendicular hydrodynamic load energy that acts on gate bottom edge department obtains effectual dissipation in energy dissipation damping mechanism, reduces the vertical vibration of gate and causes fatigue damage and take place the possibility of strikeing the destruction to pull rod, upper portion headstock gear, with the effective safe operation of assurance gate facility.

The utility model aims at realizing through the following technical scheme:

a regulation and control system for automatically dissipating energy and vibration vertically to a gate is arranged in the lower space of a cross beam at the lower part of the gate and comprises a vibration-dissipating plate and a vibration-dissipating mechanism, wherein the vibration-dissipating mechanism consists of an upper connecting rod, a first energy dissipating device, a balancing body, a second energy dissipating device and a lower connecting rod which are sequentially connected from top to bottom, and the first energy dissipating device and the second energy dissipating device consist of a spring element and a damping element which are arranged in parallel; the energy dissipation and vibration reduction mechanism is characterized in that the vibration reduction plates are arranged below the energy dissipation and vibration reduction mechanism at equal intervals along the width direction of the gate, the vibration reduction plates are higher than the bottom end of the water retaining panel of the gate, the front end and the rear end of each vibration reduction plate are respectively connected with the lower connecting rod of the energy dissipation and vibration reduction mechanism, and the upper connecting rod of the energy dissipation and vibration reduction mechanism is connected with the lower cross beam.

Furthermore, the first energy dissipater, the balancing body and the second energy dissipater are arranged in a sealed box body, and the upper connecting rod and the lower connecting rod respectively extend out of the upper end and the lower end of the sealed box body to be connected with the outside.

Furthermore, the damping plate is made of elastic materials, the main bearing area has enough rigidity, and other areas can be properly deformed under the action of hydrodynamic load so as to adapt to the smoothness and stability of a water flow streamline. Water flow can enter the bottom edge space of the gate above the vibration absorption plate, and the load effect on the vibration absorption plate is reduced by utilizing the gravity effect of the water body in the inner space. In the water flow direction, the front edge and the rear edge of the vibration damping plate are in a curve type, wherein the front edge is bent downwards, the rear edge is bent upwards, and the bent parts of the front edge and the rear edge of the vibration damping plate are respectively provided with a flow grid hole, so that the flow line of water flow is smooth when the water flow enters and exits from the bottom edge space.

Furthermore, hydrodynamic load of the bottom edge of the gate acts on the energy dissipation plate, the panel transmits the load action to the energy dissipation and vibration reduction mechanism through the rod system, the spring element deforms in a pulling and pressing mode, and the vertical vibration action of the movable anti-impact plate is reduced. The spring element drives the balance body to vibrate up and down, coupling linkage is generated between the balance body and the damping element, the damping element can consume the vibration energy of the balance body, dissipation of vertical vibration energy of the gate is achieved, and the vertical vibration magnitude of the gate is reduced.

Compared with the prior art, the utility model discloses a beneficial effect that technical scheme brought is:

1. the upper part of the damping plate is fixedly connected with the energy dissipation and vibration reduction mechanism, hydrodynamic load acting on the damping plate is transmitted to the sealed energy dissipation and vibration reduction mechanism through the lower connecting rod, and the spring element inside the damping plate can play a role in direct vibration reduction and reduce dynamic impact on a gate beam. Meanwhile, the spring element in the energy dissipation and vibration reduction mechanism is subjected to load action to generate tension and compression deformation, and the energy dissipation and vibration reduction mechanism starts to work at the moment. The deformation of the spring element enables the balance body in the energy dissipation and vibration reduction mechanism to vibrate, the balance body and the damping element are coupled, and the vibrating damping element can consume the vibration energy of the balance body, namely the load energy acting on the anti-impact plate. The continuous vibration process of the vibration elimination plate enables hydrodynamic load energy acting on the bottom edge of the gate to be effectively dissipated in the energy elimination vibration reduction mechanism, vibration effect on the whole gate body is reduced, and direct vibration effect of the hydrodynamic load under the gate on the gate is reduced.

2. The front edge and the rear edge of the vibration-damping plate are in a curve type, the front edge and the rear edge of the vibration-damping plate are bent downwards, the rear edge of the vibration-damping plate is bent upwards, and the bent parts of the front edge and the rear edge of the vibration-damping plate are respectively provided with the flow-passing grid holes, so that the flow line of water flow is smooth when the water flow enters and exits from the bottom edge space, the lateral vibration effect of the water flow on the vibration-damping plate is reduced, and the lateral collision between.

Drawings

Fig. 1 is a front view structure diagram of the present invention.

Fig. 2 is a schematic side view of the present invention.

Fig. 3 is a schematic top view of the partial structure of the present invention.

Figure 4 the utility model discloses well energy dissipation damping mechanism's schematic structure.

Reference numerals: 1-lower cross beam, 2-roller, 3-energy dissipation and vibration reduction mechanism, 4-water retaining panel, 5-vibration reduction plate, 6-damping element, 7-spring element, 8-balancing body, 9-upper connecting rod, 10-flow grid hole and 11-lower connecting rod

Detailed Description

The present invention will be described in further detail with reference to the following drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1 to 4, a vertical automatic energy dissipation and vibration reduction regulation and control system for a gate is arranged in the lower space of a cross beam 1 at the lower part of the gate and comprises an energy dissipation plate 5 and an energy dissipation and vibration reduction mechanism 3, wherein the gate slides up and down in a slideway through rollers 2 at two sides in the embodiment, the energy dissipation and vibration reduction mechanism consists of an upper connecting rod 9, a first energy dissipation device, a balancing body 8, a second energy dissipation device and a lower connecting rod 11 which are sequentially connected from top to bottom, and the first energy dissipation device and the second energy dissipation device consist of a spring element 7 and a damping element 6 which are arranged in parallel; the first energy dissipater, the balancing body and the second energy dissipater are arranged in a sealed box body, and the upper connecting rod 9 and the lower connecting rod 11 respectively extend out of the upper end and the lower end of the sealed box body to be connected with the outside.

The vibration-damping plate 5 is arranged below the energy-damping vibration-damping mechanism 3 along the equal-interval arrangement in the width direction of the gate, the position of the vibration-damping plate 5 is higher than the bottom end of the water-retaining panel 4 of the gate, and when the gate is closed, the vibration-damping plate cannot be in contact with the gate bottom plate, so that collision damage between the vibration-damping plate and the gate bottom plate is prevented, and meanwhile, the arrangement of the vibration-damping plate 5 cannot influence water-stopping equipment and the structural arrangement of the gate. The front end and the rear end of the damping plate 5 are respectively connected with a lower connecting rod 11 of the energy dissipation and damping mechanism 3, and an upper connecting rod 9 of the energy dissipation and damping mechanism 3 is connected with the lower cross beam 1. The damping plate 5 is made of elastic material, the main bearing area has enough rigidity, and other areas can be properly deformed under the action of hydrodynamic load so as to adapt to the smoothness and stability of a water flow line. Water flow can enter the bottom edge space of the gate above the vibration absorption plate, and the load effect on the vibration absorption plate is reduced by utilizing the gravity effect of the water body in the inner space. In the water flow direction, the front edge and the rear edge of the vibration damping plate are in a curve type, wherein the front edge is bent downwards, the rear edge is bent upwards, the bent parts of the front edge and the rear edge of the vibration damping plate are respectively provided with flow grid holes 10, the number of the flow grid holes can be properly increased or decreased according to the width of the vibration damping plate, and the purpose is to ensure smooth and stable water flow in and out of the bottom edge space.

When water flows through the bottom edge of the gate, the flow velocity of the water flow is higher than that of other positions, the water blocking effect of the gate causes the change of a nearby flow field, a non-uniform pulsating pressure area appears at the bottom edge of the gate, and particularly for the gate under the conditions of high-water-head hydropower stations, dam body drainage and the like, the load effect is more obvious, and the vibration magnitude is obviously increased. Considering the random process of the load, a plurality of damping plates are arranged in parallel at equal intervals in the width direction of the gate, the arrangement form of the damping plates is similar to that of keys of a piano, and the damping plates can adapt to the difference of load action at different bottom edge positions of the gate. The water flow can enter the bottom edge space of the gate above the vibration-eliminating plate to form a small-range energy-eliminating vibration-reducing outflow region.

When the load effect is larger, in order to prevent the damping plate from brittle deformation damage, the damping plate is made of elastic materials, can be properly deformed under the action of hydrodynamic load, and the main bearing area has enough rigidity. The load acts on the vibration absorption plate surface to enable the vibration absorption plate to move vertically. The upper part of the damping plate is connected with an energy dissipation and damping mechanism, and the damping plate can vibrate back and forth to adapt to the characteristic of non-uniform load on the damping plate besides vibrating up and down along the water flow direction.

The load acting on the damping plate transmits the load to the sealed energy dissipation damping mechanism through the connecting rod, the spring element is stressed to generate tension-compression deformation, the inner spring element can play a damping effect, and the energy dissipation damping system starts to work at the moment. In order to quickly eliminate the vibration energy of the vibration-eliminating plate, two groups of energy-eliminating devices are arranged in the energy-eliminating vibration-reducing mechanism, and the two groups of energy-eliminating devices are connected by a balancing body in the middle. The deformation of the spring elements enables the balance bodies between the energy dissipaters to vibrate, the balance bodies and the damping elements are coupled and linked, and the vibrating damping elements in the two groups of energy dissipaters can consume the vibration energy of the balance bodies. The hydrodynamic load acting on the bottom edge is effectively dissipated in the energy dissipation and vibration reduction mechanism in the vibration process of the vibration attenuation plate, so that the hydrodynamic energy is prevented from directly acting on the gate body, and the vertical vibration effect of the gate body is reduced.

The present invention is not limited to the above-described embodiments. The above description of the embodiments is intended to describe and illustrate the technical solutions of the present invention, and the above embodiments are merely illustrative and not restrictive. Without departing from the spirit of the invention and the scope of the appended claims, the person skilled in the art can make many changes in form and detail within the teaching of the invention.

Claims

1. A vertical automatic energy dissipation and vibration reduction regulation and control system for a gate is characterized in that the regulation and control system is arranged in the lower space of a cross beam at the lower part of the gate and comprises an energy dissipation plate and an energy dissipation and vibration reduction mechanism, the energy dissipation and vibration reduction mechanism consists of an upper connecting rod, a first energy dissipation device, a balancing body, a second energy dissipation device and a lower connecting rod which are sequentially connected from top to bottom, and the first energy dissipation device and the second energy dissipation device consist of a spring element and a damping element which are arranged in parallel; the energy dissipation and vibration reduction mechanism is characterized in that the vibration reduction plates are arranged below the energy dissipation and vibration reduction mechanism at equal intervals along the width direction of the gate, the vibration reduction plates are higher than the bottom end of the water retaining panel of the gate, the front end and the rear end of each vibration reduction plate are respectively connected with the lower connecting rod of the energy dissipation and vibration reduction mechanism, and the upper connecting rod of the energy dissipation and vibration reduction mechanism is connected with the lower cross beam.

2. The system for regulating and controlling the vertical automatic energy dissipation and vibration damping of the gate as claimed in claim 1, wherein the first energy dissipation device, the balancing body and the second energy dissipation device are arranged in a sealed box body, and the upper connecting rod and the lower connecting rod respectively extend out of the upper end and the lower end of the sealed box body to be connected with the outside.

3. The system for regulating and controlling the vertical automatic energy dissipation and vibration damping of the gate as claimed in claim 1, wherein the vibration damping plate is made of elastic material, the front edge and the rear edge of the vibration damping plate are in a curve form, and the curved parts of the front edge and the rear edge of the vibration damping plate are respectively provided with a flow grid hole, so that the flow line of water flow is smooth when the water flow enters and exits from the bottom edge space.

4. The system for regulating and controlling the vertical automatic energy dissipation and vibration damping of the gate as claimed in claim 3, wherein the front edge of the vibration damping plate is bent downward, and the rear edge is bent upward.