阅读说明：本技术 一种液差检测装置及洪水预警系统 (Liquid level difference detection device and flood early warning system ) 是由 张文婷 刘永志 方园皓 唐雯雯 夏达忠 聂青 徐建 于 2020-05-27 设计创作，主要内容包括：本发明公开了一种液差检测装置及洪水预警系统,包括固定在水面上的固定杵,所述浮动组件活动设置在所述固定杵的上方,所述充气组件固定设置在所述固定杵的上方并连接所述浮动组件,所述旋转机构连接所述浮动组件,所述调节机构连接所述旋转机构,用于在所述旋转机构动作时调节报警信号的强弱；液面上升时浮动组件在浮力作用下自动上移,浮动组件带动所述充气组件动作,不断向浮动组件中充入气体,进一步提高浮力,实现液面越高浮动越精准；且在浮动组件上浮的同时,借助旋转机构带动所述调节机构动作,调节报警信号的强度,根据报警信号的强弱检测液面的液差值,从而起到液差检测的功能。(The invention discloses a liquid level difference detection device and a flood early warning system, which comprise a fixed pestle fixed on the water surface, wherein a floating assembly is movably arranged above the fixed pestle, an inflation assembly is fixedly arranged above the fixed pestle and is connected with the floating assembly, a rotating mechanism is connected with the floating assembly, and an adjusting mechanism is connected with the rotating mechanism and is used for adjusting the strength of an alarm signal when the rotating mechanism acts; when the liquid level rises, the floating assembly automatically moves upwards under the action of buoyancy, the floating assembly drives the inflation assembly to act, and gas is continuously inflated into the floating assembly, so that the buoyancy is further improved, and the higher the liquid level is, the more accurate the floating is; and when the floating assembly floats upwards, the adjusting mechanism is driven by the rotating mechanism to act, the intensity of the alarm signal is adjusted, and the liquid difference value of the liquid level is detected according to the intensity of the alarm signal, so that the function of liquid difference detection is achieved.)

1. The utility model provides a liquid level detection device, is including fixing pestle (1) on the surface of water, its characterized in that still includes:

the floating assembly is movably arranged above the fixed pestle (1) and is used for floating upwards to convert buoyancy into driving force when the liquid level rises;

the inflation assembly is fixedly arranged above the fixed pestle (1) and is connected with the floating assembly, and is used for pumping gas into the floating assembly when the floating assembly rises to increase buoyancy and improve detection accuracy; and

the rotating mechanism is connected with the floating assembly and is used for converting driving force provided by the floating assembly into rotating torque when the floating assembly floats upwards;

and the adjusting mechanism is connected with the rotating mechanism and is used for adjusting the strength of the alarm signal when the rotating mechanism acts.

2. A liquid level gauge apparatus as claimed in claim 1, wherein the float assembly comprises:

the lifting piece (4) is vertically and movably arranged above the fixed pestle (1) and is used for automatically moving up and down when the liquid level is increased or reduced;

the floating plate (5) is fixed on the side edge of the lifting piece (4) and used for driving the lifting piece (4) to move up and down; and

the air bag (6) is fixedly arranged on the floating plate (5) and is used for increasing the buoyancy between the floating plate (5) and the liquid level;

and a guide rail (3) which is in sliding sleeve with the lifting piece (4) is vertically fixed above the fixed pestle (1).

3. A liquid level detecting device according to claim 2, characterized in that the inflation assembly comprises an air cylinder (7) fixed above the fixing pestle (1) through a mounting bracket (2), a sealing plug (8) arranged in the air cylinder (7) in a sealing and sliding way, and an air duct (9) for communicating the upper part of the air cylinder (7) with the air bag (6);

the sealing plug (8) is fixed at the upper end of the lifting piece (4), and the lower part of the air cylinder (7) is provided with a through hole for the lifting piece (4) to pass through.

4. A liquid level difference detecting device according to claim 3, wherein said rotating mechanism comprises:

the straight rack (10), the said straight rack (10) is fixed on said mounting rack (2);

the gear (11) is meshed with the spur rack (10) and is used for rotating in a matched manner with the fixed spur rack (10) when the gear (11) moves upwards; and

the driven shaft (12) is rotatably arranged on the lifting piece (4) and fixed with the gear (11) and is used for driving the gear (11) to rotate when the lifting piece (4) is lifted along the guide rail (3);

the driven shaft (12) is rotatably connected with the lifting piece (4) through a sleeve piece (13) fixed on the lifting piece (4).

5. The liquid level difference detecting device according to claim 4, wherein the adjusting mechanism comprises:

the cross beam (16), the said cross beam (16) is fixed and installed on the said lifting unit (4) horizontally;

the thread transmission assembly is connected with the driven shaft (12) and is used for outputting linear torque through thread force when the driven shaft (12) rotates; and

the sliding variable-resistance structure is arranged above the cross beam (16) and connected with the threaded transmission assembly, and is used for adjusting an electric power signal when the threaded transmission assembly outputs a linear moment.

6. A liquid level difference detecting device according to claim 5, wherein said screw transmission assembly comprises a screw rod (15) rotatably disposed on said cross member (16), a transmission member (14) for connecting said screw rod (15) and said driven shaft (12), and a screw tube (17) threadedly connected to said screw rod (15) and connected to said sliding rheostat.

7. A liquid level difference detecting device according to claim 6, wherein the sliding rheostat structure comprises a resistance column (19) fixed above the cross beam (16) and parallel to the screw rod (15), a sliding sleeve (18) slidably arranged on the resistance column (19) and fixed with the solenoid (17), and a lead (20) for electrically connecting one end of the resistance column (19) and the sliding sleeve (18).

8. A flood warning system comprising the liquid level difference detection device according to claim (7), further comprising an alarm (21) fixedly mounted on top of said gas cylinder (7), said alarm (21) being in electrical communication with a power source and said conductors (20).

Technical Field

The invention relates to equipment in the field of flood control and disaster resistance, in particular to a liquid level difference detection device and a flood early warning system.

Background

The water level is the most intuitive factor for reflecting the water condition of the water body, and the change of the water level is mainly caused by the increase and decrease of the water quantity of the water body. The water level course line is a curve of the water level at a certain position along with time.

The liquid difference refers to the elevation of the free water surface relative to a certain base plane, and the distance between the water surface and the river bottom is the water depth. The base plane used for calculating the water level can be a zero-point level base plane which is the elevation of a certain characteristic sea level, and can also be a zero point for calculating the water level by taking the elevation of a specific point as a reference.

Most of air bags used in the existing water level liquid level detection are inflated at one time, the air in the air bags is lost along with the increase of the using time, if the air bags are inflated enough, the gas loss speed in the air bags is accelerated, the buoyancy provided by the air bags is reduced, the subsequent continuous maintenance is needed, and the subsequent maintenance cost is increased; the utility model discloses a "pumped storage power station reservoir out of limit automatic check alarm device" utility model patent in CN207717192U, the transmission that this patent had and resistance regulation's function, its weak point lies in: 1. the force transmission of the utility model is carried out by magnetic force, and the water-stop sheet between the two magnetic blocks can cause the loss of force in the transmission process, thus reducing the measurement accuracy; 2. the utility model discloses a transmit power through magnetic force, its magnetic force has the possibility that can receive external interference, probably leads to the device to have the risk of inefficacy.

Disclosure of Invention

Based on the above mentioned shortcomings in the prior art, the invention provides a liquid level difference detection device and a flood early warning system.

The invention overcomes the technical problems by adopting the following technical scheme, and specifically comprises the following steps:

the utility model provides a liquid level detection device, includes the fixed pestle of fixing on the surface of water, still includes:

the floating assembly is movably arranged above the fixed pestle and is used for floating upwards to convert buoyancy into driving force when the liquid level rises;

the inflation assembly is fixedly arranged above the fixed pestle and is connected with the floating assembly, and is used for pumping gas into the floating assembly when the floating assembly ascends to increase buoyancy and improve detection accuracy; and

the rotating mechanism is connected with the floating assembly and is used for converting driving force provided by the floating assembly into rotating torque when the floating assembly floats upwards;

and the adjusting mechanism is connected with the rotating mechanism and is used for adjusting the strength of the alarm signal when the rotating mechanism acts.

As a further scheme of the invention: the float assembly includes:

the lifting piece is vertically and movably arranged above the fixed pestle and is used for automatically moving up and down when the liquid level is increased or reduced;

the floating plate is fixed on the side edge of the lifting piece and used for driving the lifting piece to move up and down; and

the air bag is fixedly arranged on the floating plate and used for increasing the buoyancy between the floating plate and the liquid level;

and a guide rail which is in sliding sleeve fit with the lifting piece is vertically fixed above the fixed pestle.

As a still further scheme of the invention: the inflation assembly comprises an air cylinder fixed above the fixed pestle through a mounting rack, a sealing plug arranged in the air cylinder in a sealing and sliding manner, and an air duct used for communicating the upper part of the air cylinder with the air bag;

the sealing plug is fixed at the upper end of the lifting piece, and the lower part of the inflator is provided with a through hole for the lifting piece to pass through.

As a still further scheme of the invention: the rotating mechanism includes:

the straight rack is fixed on the mounting rack;

the gear is meshed with the straight rack and is matched with the fixed straight rack to rotate when moving upwards; and

the driven shaft is rotatably arranged on the lifting piece, is fixed with the gear and is used for driving the gear to rotate when the lifting piece is lifted along the guide rail;

the driven shaft is rotatably connected with the lifting piece through a sleeve fixed on the lifting piece.

As a still further scheme of the invention: the adjustment mechanism includes:

the cross beam is horizontally and fixedly arranged on the lifting piece;

the thread transmission assembly is connected with the driven shaft and is used for outputting linear torque through thread force when the driven shaft rotates; and

the sliding variable-resistance structure is arranged above the cross beam and connected with the threaded transmission assembly, and is used for adjusting an electric power signal when the threaded transmission assembly outputs a linear moment.

As a still further scheme of the invention: the thread transmission assembly comprises a screw rod rotatably arranged on the cross beam, a transmission part used for connecting the screw rod and the driven shaft, and a solenoid which is in threaded connection with the screw rod and is connected with the sliding variable resistance structure.

As a still further scheme of the invention: the sliding rheostat structure comprises a resistance column fixed above the cross beam and parallel to the lead screw, a sliding sleeve arranged on the resistance column in a sliding mode and fixed with the solenoid, and a lead used for electrically connecting one end of the resistance column with the sliding sleeve.

A flood early warning system comprises the liquid level difference detection device in the embodiment and further comprises an alarm fixedly mounted at the top of the inflator, and the alarm is in telecommunication connection with a power supply and a lead.

After adopting the structure, compared with the prior art, the invention has the following advantages: the floating assembly automatically moves upwards under the action of buoyancy when the liquid level rises, and drives the inflation assembly to act, so that the inflation assembly is continuously inflated, the air bag can keep half air in the initial state, the air loss speed in the air bag is reduced, the buoyancy provided by the assembly is increased, and the subsequent maintenance cost is reduced; when the floating assembly floats upwards, the adjusting mechanism is driven to move by means of the meshing of a screw rod and a solenoid in the rotating mechanism, so that the stability and the anti-interference performance of force transmission are ensured, the force loss is reduced, and the function of accurately and stably detecting the liquid difference is achieved.

Drawings

Fig. 1 is a schematic structural diagram of a flood warning system.

Fig. 2 is a partially enlarged view of the rotation mechanism and the adjustment mechanism in the flood warning system.

Fig. 3 is a schematic structural view of a lifting member, an air cylinder and a sealing plug in the flood early warning system.

In the figure: 1-fixing the pestle; 2-a mounting rack; 3-a guide rail; 4-a lifting member; 5-floating plate; 6-air bag; 7-inflator; 8-sealing plug; 9-a gas-guide tube; 10-straight rack; 11-a gear; 12-a driven shaft; 13-a kit; 14-a transmission member; 15-a screw rod; 16-a cross beam; 17-a coil; 18-a sliding sleeve; 19-a resistive column; 20-a wire; 21-alarm.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

In addition, an element of the present invention may be said to be "fixed" or "disposed" to another element, either directly on the other element or with intervening elements present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Referring to fig. 1 to 3, in an embodiment of the present invention, a liquid level difference detecting device includes a fixing pestle 1 fixed on a water surface, and further includes:

the floating assembly is movably arranged above the fixed pestle 1 and is used for floating upwards to convert buoyancy into driving force when the liquid level rises;

the inflation assembly is fixedly arranged above the fixed pestle 1 and is connected with the floating assembly, and is used for pumping gas into the floating assembly when the floating assembly ascends to increase buoyancy and improve detection accuracy; and

the rotating mechanism is connected with the floating assembly and is used for converting driving force provided by the floating assembly into rotating torque when the floating assembly floats upwards;

the adjusting mechanism is connected with the rotating mechanism and used for adjusting the strength of the alarm signal when the rotating mechanism acts;

when the liquid level rises, the floating assembly automatically moves upwards under the action of buoyancy, the floating assembly drives the inflation assembly to act, and gas is continuously inflated into the floating assembly, so that the buoyancy is further improved, and the higher the liquid level is, the more accurate the floating is; and when the floating assembly floats upwards, the adjusting mechanism is driven by the rotating mechanism to act, the intensity of the alarm signal is adjusted, and the liquid difference value of the liquid level is detected according to the intensity of the alarm signal, so that the function of liquid difference detection is achieved.

In one embodiment of the invention, the float assembly comprises:

the lifting piece 4 is vertically and movably arranged above the fixed pestle 1 and is used for automatically moving up and down when the liquid level is increased or reduced;

the floating plate 5 is fixed on the side edge of the lifting piece 4 and used for driving the lifting piece 4 to move up and down; and

the air bag 6 is fixedly arranged on the floating plate 5 and used for increasing the buoyancy between the floating plate 5 and the liquid level;

a guide rail 3 which is in sliding sleeve fit with the lifting piece 4 is vertically fixed above the fixed pestle 1;

the motion track of the lifting piece 4 is restrained by the guide rail 3, and when the height of the liquid level is increased, the lifting piece 4 is driven to vertically lift along the guide rail 3 by utilizing the floating force of the floating plate 5 and the air bag 6.

In another embodiment of the invention, the inflation assembly comprises an air cylinder 7 fixed above the fixing pestle 1 through a mounting rack 2, a sealing plug 8 arranged in the air cylinder 7 in a sealing and sliding manner, and an air duct 9 for communicating the upper part of the air cylinder 7 with the air bag 6;

wherein, the sealing plug 8 is fixed at the upper end of the lifting piece 4, and the lower part of the air cylinder 7 is provided with a through hole for the lifting piece 4 to pass through;

when the lifting piece 4 moves upwards under the action of the buoyancy of the floating plate 5 and the air bag 6, the sealing plug 8 is driven to slide upwards in a sealing manner along the inner wall of the air cylinder 7, the air on the upper part of the air cylinder 7 is extruded by the sealing plug 8 which slides in the sealing manner and is discharged into the air bag 6 through the air guide pipe 9, so that the air bag 6 is further blown to be large, the contact area with the liquid level is increased, the buoyancy is increased, and the high precision is kept.

In yet another embodiment of the present invention, the rotation mechanism includes:

the straight rack 10 is fixed on the mounting rack 2;

the gear 11 is meshed with the spur rack 10 and is used for rotating in a matched manner with the fixed spur rack 10 when the gear 11 moves upwards; and

the driven shaft 12 is rotatably arranged on the lifting piece 4 and fixed with the gear 11, and is used for driving the gear 11 to rotate when the lifting piece 4 lifts along the guide rail 3;

wherein, the driven shaft 12 is rotationally connected with the lifting piece 4 through a sleeve piece 13 fixed on the lifting piece 4;

when the lifting piece 4 is lifted along the guide rail 3, the driven shaft 12 and the gear 11 are driven to lift along with the lifting piece, the gear 11 and the fixed spur rack 10 are matched to drive the driven shaft 12 to rotate, and buoyancy is converted into rotating torque.

In yet another embodiment of the present invention, the adjustment mechanism comprises:

the cross beam 16 is horizontally and fixedly arranged on the lifting piece 4;

the thread transmission assembly is connected with the driven shaft 12 and is used for outputting linear torque through thread force when the driven shaft 12 rotates; and

the sliding variable-resistance structure is arranged above the cross beam 16 and connected with the threaded transmission assembly, and is used for adjusting an electric power signal when the threaded transmission assembly outputs a linear moment;

when the driven shaft 12 rotates, the threaded transmission assembly is driven to act, so that linear torque is output, the sliding variable resistance structure is driven to act by the linear torque, and therefore current and/or voltage signals of a circuit are adjusted, and a reaction liquid difference value is obtained.

In a further embodiment of the present invention, the screw transmission assembly comprises a screw rod 15 rotatably disposed on the cross beam 16, a transmission member 14 for connecting the screw rod 15 with the driven shaft 12, and a screw tube 17 threadedly connected to the screw rod 15 and connected to the sliding rheostat structure;

the screw rod 15 is driven by the rotating driven shaft 12 through a transmission part 14 to rotate, and the screw rod 15 drives a screw pipe 17 to drive the sliding variable-resistance structure to act by utilizing the spiral lifting force between the screw teeth, so that current and/or voltage signals are adjusted.

In another embodiment of the present invention, the sliding varistor structure includes a resistor column 19 fixed above the beam 16 and parallel to the lead screw 15, a sliding sleeve 18 slidably disposed on the resistor column 19 and fixed with the screw 17, and a lead 20 for electrically connecting one end of the resistor column 19 and the sliding sleeve 18;

the sliding rheostat structure is similar to a common sliding rheostat, the sliding sleeve 18 is driven by the solenoid 17 to slide along the resistance column 19, so that the resistance in the circuit is adjusted, and the current and/or voltage signal adjustment is realized.

In a further embodiment of the present invention, a flood warning system comprises the liquid level difference detecting device of the above embodiment, and further comprises an alarm 21 fixedly mounted on the top of the gas cylinder 7, wherein the alarm 21 is electrically connected to a power supply and the conducting wire 20;

when the liquid level floats, the sliding sleeve 18 in the sliding rheostat structure acts to adjust the current and/or voltage signals of the whole circuit, so that the current and/or voltage supplied to the alarm 21 changes, and the alarm 21 makes different reactions according to different currents and/or voltages to feed back an early warning.

The foregoing is merely illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to vary. But all changes which come within the scope of the invention are intended to be embraced therein.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.