Water level monitoring device with alarming function
Technical Field
The invention relates to the technical field of water level monitoring, in particular to a water level monitoring device with an alarm function.
Background
The principle of hydroelectric generation is that water flow is utilized to push a water turbine to rotate, so that the water turbine drives a generator to operate to convert mechanical energy into electric energy, and finally, the electric energy is transmitted to users through power transformation and power transmission and distribution equipment.
When hydroelectric power generation is carried out in a hydropower station, a water level monitoring device is usually required to be arranged at a water outlet, so that insufficient water flow energy supply is prevented when the water level is low. The existing water level monitoring equipment is not sensitive enough to the response of the water level change, and can not rapidly inform the staff to make emergency adjustment when the water level is lower than a warning line, so that the use is inconvenient.
Therefore, a water level monitoring device with an alarm function is provided.
Disclosure of Invention
The invention aims to solve the problems in the background art and provides a water level monitoring device with an alarm function.
In order to achieve the purpose, the invention adopts the following technical scheme: a water level monitoring device with an alarming function comprises a mounting block, wherein a cavity is formed in the mounting block, a first tuning fork is fixedly mounted in the cavity, a second tuning fork with the same vibration frequency as the first tuning fork is also fixedly mounted at the upper end of the mounting block, a metal cover body is hermetically covered outside the second tuning fork, two fork arms of the second tuning fork are not just in contact with the inner wall of the metal cover body, and a through hole communicated with the cavity is further formed in the surface of the mounting block in the metal cover body;
a longitudinal first mounting groove is formed in the bottom of the cavity, an impact block matched with the first tuning fork for use is vertically and slidably connected inside the first mounting groove, a first spring is fixedly connected between the bottom end of the impact block and the bottom in the first mounting groove, a reset pull rod is also vertically welded at the bottom end of the impact block, the lower end of the reset pull rod penetrates through the mounting block and extends out of the mounting block, and the first spring is just sleeved outside the reset pull rod;
set up the second mounting groove of a horizontal setting on the lateral wall of installation piece, and second mounting groove and first mounting groove intercommunication, a spacing groove has still been seted up in the middle of the lateral wall of striking piece, the inside sliding connection has the stopper that a cooperation spacing groove used just in the second mounting groove, it has an annular connecting block to go back the rigid coupling in the middle of the second mounting groove, and go back fixedly connected with second spring between annular connecting block and the stopper, the one end that the spacing groove was kept away from to the stopper still is equipped with water level monitoring mechanism.
In the above water level monitoring device with alarm function, the water level monitoring mechanism includes an L-shaped pipe fixedly connected to the side wall of the mounting block in a sealing manner, wherein the notch of the second mounting groove is located inside the pipe orifice of the L-shaped pipe, a movable pulley is slidably connected to the inner wall of the L-shaped pipe, rope hooks are arranged at the left end and the right end of the movable pulley, a first pull rope is fixedly connected to the rope hook at the right end of the movable pulley, the other end of the first pull rope horizontally extends into the second mounting groove and then penetrates through the annular connecting block to be fixedly connected with the side wall of the limiting block, a second pull rope is fixedly connected to the hook at the left end of the movable pulley, a wheel carrier is fixedly connected to the inner wall of the L-shaped pipe, a first fixed pulley and a second fixed pulley used in cooperation with the second pull rope are rotatably arranged on the wheel carrier, and one end of the second pull rope, far away from the hook at the left, The movable pulley and the second fixed pulley extend vertically downwards and are fixedly connected with a floating block, and the floating block is also positioned inside the L-shaped pipe.
Compared with the prior art, this water level monitoring device with alarming function's advantage lies in:
1. the first tuning fork and the second tuning fork which can resonate are arranged to be matched with the water level monitoring mechanism for use, transmission is carried out by utilizing the tension change effect at one end of the floating block when the water level is changed, and the transmission can be rapidly triggered when the water level is lower than a warning line, so that the second tuning fork resonates to continuously knock the metal cover body to send an alarm, and a worker can conveniently respond in time; the process adopts a pure mechanical structure for transmission, does not need to consume electric power, is energy-saving and environment-friendly, and is more convenient to use;
2. the pulley block formed by the first fixed pulley, the second fixed pulley and the movable pulley is matched with the floating block and the limiting block for use, the pulling force change effect of one end of the floating block is amplified when the water level changes, so that the limiting block is sensitive to the water level change condition, and the monitoring sensitivity of the device is higher.
Drawings
Fig. 1 is a schematic structural diagram of a water level monitoring device with an alarm function according to the present invention;
fig. 2 is an enlarged schematic view of a portion a in fig. 1.
In the figure: the device comprises an installation block 1, a cavity 2, a first tuning fork 3, a second tuning fork 4, a metal cover 5, a first installation groove 6, an impact block 7, a first spring 8, a reset pull rod 9, a second installation groove 10, a limiting block 11, a ring-shaped connection block 12, a second spring 13, an L-shaped pipe 14, a movable pulley 15, a first pull rope 16, a second pull rope 17, a wheel carrier 18, a first fixed pulley 19, a second fixed pulley 20 and a floating block 21.
Detailed Description
The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.
Examples
Referring to fig. 1-2, a water level monitoring device with an alarm function comprises a mounting block 1, a cavity 2 is formed in the mounting block 1, a first tuning fork 3 is fixedly mounted in the cavity 2, a second tuning fork 4 with the same vibration frequency as the first tuning fork 3 is also fixedly mounted at the upper end of the mounting block 1, a metal cover 5 is hermetically covered outside the second tuning fork 4, two fork arms of the second tuning fork 4 are not just in contact with the inner wall of the metal cover 5, and a through hole communicated with the cavity 2 is further formed in the surface of the mounting block 1 in the metal cover 5;
a longitudinal first mounting groove 6 is formed in the bottom of the cavity 2, an impact block 7 matched with the first tuning fork 3 for use is vertically and slidably connected inside the first mounting groove 6, a first spring 8 is fixedly connected between the bottom end of the impact block 7 and the bottom in the first mounting groove 6, a reset pull rod 9 is also vertically welded at the bottom end of the impact block 7, the lower end of the reset pull rod 9 penetrates through and extends out of the mounting block 1, and the first spring 8 is just sleeved outside the reset pull rod 9;
a second mounting groove 10 which is transversely arranged is formed in the side wall of the mounting block 1, the second mounting groove 10 is communicated with the first mounting groove 6, a limiting groove is further formed in the middle of the side wall of the impact block 7, a limiting block 11 which is matched with the limiting groove in use is just connected in the second mounting groove 10 in a sliding mode, an annular connecting block 12 is further fixedly connected in the middle of the second mounting groove 10, a second spring 13 is further fixedly connected between the annular connecting block 12 and the limiting block 11, the first spring 8 and the second spring 13 are both reset springs made of stainless steel materials, the reset performance of the reset springs is more accurate and stable, and the reset springs are made of stainless steel materials and have stronger corrosion resistance and are more durable;
a water level monitoring mechanism is further arranged at one end, far away from the limiting groove, of the limiting block 11, the water level monitoring mechanism comprises an L-shaped pipe 14 which is fixedly connected to the side wall of the mounting block 1 in a sealing manner, a notch of the second mounting groove 10 is located inside a pipe orifice of the L-shaped pipe 14, a movable pulley 15 is slidably connected to the inner wall of the L-shaped pipe 14, rope hooks are arranged at the left end and the right end of the movable pulley 15, a first pull rope 16 is fixedly connected to the rope hook at the right end of the movable pulley 15, the other end of the first pull rope 16 horizontally extends into the second mounting groove 10 and penetrates through the annular connecting block 12 to be fixedly connected with the side wall of the limiting block 11, a second pull rope 17 is fixedly connected to the hook body at the left end of the movable pulley 15, a wheel carrier 18 is fixedly connected to the inner wall of the L-shaped pipe 14, a first fixed pulley 19 and a second fixed pulley 20 which are matched with the second pull rope 17 are rotatably arranged on the wheel carrier 18, The movable pulley 15 and the second fixed pulley 20 extend vertically downwards and are fixedly connected with a floating block 21, the floating block 21 is also positioned inside the L-shaped pipe 14, the diameter of the second fixed pulley 20 is larger than that of the first fixed pulley 19, and the second pull rope 17 is prevented from contacting with the first fixed pulley 19 and the second fixed pulley 20 when being wound, so that friction resistance is generated in the transmission process, and the transmission efficiency is influenced.
When the device is used, the device is arranged at a water outlet of hydraulic power generation, the vertical part of the L-shaped pipe 14 is inserted into water, when the water level is normal, the floating block 13 in the L-shaped pipe 14 is in a free floating state, the second pull rope 17 and the first pull rope 16 are both loose, at the moment, the limiting block 11 is abutted in the limiting groove in the side wall of the impact block 7 under the action of the elastic force of the second spring 13 to limit the impact block 7, and the first spring 8 and the second spring 13 are both in a compressed state; when the water level is abnormally reduced, the floating height of the floating block 21 is gradually reduced along with the water level, when the water level is continuously reduced, the second pull rope 17 and the first pull rope 16 are gradually tensioned by the floating block, the buoyancy force applied to the floating block 13 is gradually reduced, the second pull rope 17 can pull the movable pulley 15, the first pull rope 16 and the limiting block 11 to slide leftwards under the action of the gravity of the floating block 21, when the limiting block 11 is pulled to be completely separated from the limiting groove, the impact block 7 is separated from the limiting position and then moves upwards under the action of the elastic force of the first spring 8 to impact the first tuning fork 3, the first tuning fork 3 can drive the second tuning fork 4 at the upper end of the mounting block 1 to resonate after vibrating, two fork arms of the second tuning fork 4 can continuously hit the inner wall of the metal cover body 5 when vibrating, so as to continuously send impact sound to give an alarm to workers, and because of the sealed space formed by the cavity 2 and the metal cover body 5, the, the impact alarm sound may be amplified by mounting a sound amplification device around the metal enclosure 5; after the water level returns to normal, the floating block 21 floats on the water surface again, a worker only needs to pull the reset pull rod 9 at the bottom of the mounting block 1 to enable the impact block 7 to slide back into the first mounting groove 6, and due to the reset force of the second spring 13, the limiting block 11 can be automatically and again abutted into the limiting groove to limit the impact block 7, so that the reset process is convenient to operate;
it is worth to be noted that under the action of the pulley block formed by the first fixed pulley 19, the second fixed pulley 20 and the movable pulley 15, the pulling force of the first pull rope 16 to the limiting block 11 is about three times of the pulling force of the floating block 21 to the second pull rope 17, so that the limiting block 11 is sensitive to the water level change condition, and the monitoring sensitivity is high.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.