CN116295714B - Explosion-proof radar level gauge with automatic alarm function - Google Patents
Explosion-proof radar level gauge with automatic alarm function Download PDFInfo
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- CN116295714B CN116295714B CN202310048490.1A CN202310048490A CN116295714B CN 116295714 B CN116295714 B CN 116295714B CN 202310048490 A CN202310048490 A CN 202310048490A CN 116295714 B CN116295714 B CN 116295714B
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- 239000000523 sample Substances 0.000 claims abstract description 36
- 238000009434 installation Methods 0.000 claims description 26
- 238000005259 measurement Methods 0.000 abstract description 5
- 238000001514 detection method Methods 0.000 abstract description 4
- 230000001960 triggered effect Effects 0.000 abstract description 4
- 230000006870 function Effects 0.000 description 9
- 238000005381 potential energy Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- -1 steam Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
- G01F23/284—Electromagnetic waves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/0007—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm for discrete indicating and measuring
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Level Indicators Using A Float (AREA)
Abstract
The invention discloses an explosion-proof radar liquid level gauge with an automatic alarm function, which belongs to the field of liquid level measurement, and comprises a flange plate and a liquid inlet pipe which are arranged on a containing tank through a lock nut, wherein the flange plate is provided with a liquid level gauge body, the bottom of a cylindrical machine body is fixedly connected with a probe, and the cylindrical machine body is elastically and slidably connected on the flange plate. According to the invention, the floating plate is arranged to partially offset the ripple of the liquid level in the accommodating tank, the accuracy of the detection result of the probe is improved, and the cylindrical body is arranged to slide on the flange plate, so that when the height of the solution in the accommodating tank is too high, the cylindrical body drives the liquid level meter body and the probe to ascend, the probe is prevented from being damaged due to the fact that the probe contacts with the potentially corrosive solution in the accommodating tank, in addition, an alarm is triggered to work to prompt staff after the cylindrical body ascends, and meanwhile, the electromagnetic valve is controlled to close, so that the excessive amount of the solution filled in the accommodating tank is avoided.
Description
Technical Field
The invention relates to the technical field of liquid level measurement, in particular to an explosion-proof radar liquid level gauge with an automatic alarm function.
Background
The radar level gauge is a level gauge applied to the chemical industry, electromagnetic pulse of the radar level gauge propagates along a steel cable or a probe rod at the speed of light, when encountering the surface of a measured medium, part of pulse of the radar level gauge is reflected to form echo and returns to a pulse transmitting device along the same path, the distance between the transmitting device and the surface of the measured medium is in direct proportion to the propagation time of the pulse therebetween, and the liquid level height is calculated; the radar level gauge can perform continuous level measurement on liquid, particles and slurry, and the measurement of the radar level gauge is not affected by medium change, temperature change, inert gas, steam, dust, foam and the like; the radar liquid level gauge is mainly applied to liquid level measurement of water liquid storage tanks, acid-base storage tanks, slurry storage tanks, solid particles, small-sized oil storage tanks and the like.
The solution is required to be filled into the accommodating tank during chemical operation, the solution is required to be filled into a plurality of accommodating tanks in actual operation, and then when the staff does not notice the solution height, the situation that the solution is excessively filled into the accommodating tanks is often caused, the accommodating tanks are filled with serious situations, accidents are caused if corrosive solution is filled into the accommodating tanks, the conventional radar level gauge can alarm the ultrahigh liquid level when detecting the solution height, but generally has no function of cutting off the solution filling, the manual operation is required by the staff, the staff can take place at a time interval from the alarm hearing to the processing, the solution overflowing is likely to occur, in addition, when the solution is filled into the accommodating tanks, the liquid level inside the accommodating tanks can generate ripples, and the occurrence of the ripples can possibly cause a small deviation of the liquid level height detected by the probe.
Disclosure of Invention
The invention aims to provide an explosion-proof radar liquid level gauge with an automatic alarm function, which has the advantages of automatically cutting off solution filling and reducing liquid level corrugation, and solves the problems in the background art.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides an explosion-proof radar level gauge with automatic alarm function, includes flange dish and feed liquor pipe at holding tank top through lock nut installation, the middle part swing joint of flange dish has the level gauge body, the externally mounted of level gauge body has explosion-proof shell, the lower part fixedly connected with cylindrical organism of level gauge body, the bottom fixedly connected with probe of cylindrical organism, cylindrical organism elasticity sliding connection is on the flange dish, the lower surface of flange dish is equipped with the kickboard.
Preferably, the upper surface fixedly connected with of kickboard accomodates the rope, the lower surface fixedly connected with first drum of kickboard, sliding connection has the second drum on the lateral wall of first drum, the lateral wall threaded connection of second drum has first nut, first nut offsets with first drum interval.
Preferably, the lower surface fixedly connected with tension sensor of ring flange, the bottom fixedly connected with of tension sensor is two mount pad, two rotate jointly between the mount pad and be connected with the installation pole, one of them fixedly connected with tension sensor control's micro motor on the side of mount pad, installation pole fixed connection is at the output of micro motor, the coaxial fixedly connected with of installation pole accomodates the axle, accomodate rope winding connection at the lateral wall of accomodating the axle.
Preferably, the two sides that the mount pad kept away from each other are fixedly connected with first collar and second collar respectively, the lateral wall threaded connection of first collar has the second nut, the second nut offsets with the one end interval of installation pole, fixedly connected with torsional spring in the second collar, the other end and the torsional spring fixed connection of installation pole.
Preferably, the bottom fixedly connected with spacing ring of cylindrical organism, the extension spring has been cup jointed at the middle part of cylindrical organism, the both ends of extension spring respectively with ring flange and spacing ring fixed connection.
Preferably, the lower surface of the flange plate is rotationally connected with a limiting rod, and one end of the limiting rod, which is far away from the flange plate, is intermittently abutted against the limiting ring.
Preferably, the rotating shafts are rotatably connected between the two mounting seats, the rectangular plates are fixedly connected in the middle of the rotating shafts, pull ropes are fixedly connected between the rectangular plates and the limiting rods, a circular plate is fixedly connected to one end of each storage rope, which is close to the floating plate, and the circular plate and the rectangular plates are intermittently abutted.
Preferably, the side wall fixedly connected with elasticity bent rod of pivot, the mount pad is in the one side fixedly connected with arc of torsional spring, the one end and the arc fixed connection of arc that keep away from the pivot of elasticity bent rod.
Preferably, the upper surface fixedly connected with siren of ring flange, the middle part fixedly connected with extension handle of siren, the one end fixedly connected with that the extension handle kept away from the siren is used for controlling the first pressure-sensitive switch of siren work, the up end of cylindrical organism is equipped with two lugs, one of them the lug offsets with first pressure-sensitive switch interval.
Preferably, the electromagnetic valve is installed on the liquid inlet pipe, an installation block is fixedly connected to the upper surface of the flange plate, a second pressure-sensitive switch for controlling the electromagnetic valve to be closed is arranged at the top of the installation block, and a lug far away from the first pressure-sensitive switch is intermittently abutted against the second pressure-sensitive switch.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the floating plate is arranged to partially offset the ripple of the liquid level in the accommodating tank, so that the accuracy of the detection result of the probe is improved.
2. According to the invention, the cylindrical machine body is arranged to slide on the flange plate, so that when the height of the solution in the accommodating tank is too high, the cylindrical machine body drives the liquid level meter body and the probe to ascend, the probe is prevented from being damaged due to the fact that the probe is contacted with the solution possibly having corrosiveness in the accommodating tank, in addition, an alarm is triggered to work to prompt a worker after the cylindrical machine body ascends, and meanwhile, the electromagnetic valve is controlled to be closed, so that the excessive amount of the solution filled in the accommodating tank is avoided.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of the structure of the flange plate of the present invention;
FIG. 3 is a schematic view of the structure of the portion A in FIG. 2 according to the present invention;
FIG. 4 is a schematic view of the structure of the mounting base of the present invention;
FIG. 5 is a schematic view of the structure of the floating plate of the present invention;
fig. 6 is a schematic view of the structure of the stop lever of the present invention.
In the figure: 1. a receiving tank; 11. a liquid inlet pipe; 12. an electromagnetic valve; 13. a mounting block; 14. a second pressure sensitive switch; 2. a flange plate; 21. a lock nut; 22. a bump; 23. a level gauge body; 24. a cylindrical body; 25. a probe; 26. a mounting base; 261. a tension sensor; 262. a micro motor; 27. a mounting rod; 28. a storage shaft; 29. a first mounting ring; 291. a second nut; 292. a second mounting ring; 293. a torsion spring; 3. a storage rope; 31. a floating plate; 32. a first cylinder; 33. a second cylinder; 34. a first nut; 35. a circular plate; 4. a rectangular plate; 41. a rotating shaft; 411. an elastic bent rod; 412. an arc-shaped plate; 42. a pull rope; 43. a limit rod; 44. a limiting ring; 45. a tension spring; 5. an alarm; 51. an extension handle; 52. a first pressure sensitive switch.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1, 2, 4, 5 and 6, the present invention provides a technical solution: the utility model provides an explosion-proof radar level gauge with automatic alarm function, includes flange dish 2 and feed liquor pipe 11 at holding jar 1 top through lock nut 21 installation, and the middle part swing joint of flange dish 2 has level gauge body 23, and the externally mounted of level gauge body 23 has explosion-proof shell, and the lower part fixedly connected with cylindrical organism 24 of level gauge body 23, the bottom fixedly connected with probe 25 of cylindrical organism 24, cylindrical organism 24 elasticity sliding connection is on flange dish 2, and the lower surface of flange dish 2 is equipped with floating plate 31.
During use, the flange plate 2 is installed on the accommodating tank 1 through the lock nut 21, solution is injected into the accommodating tank 1 through the liquid inlet pipe 11, the liquid level meter body 23 and the flange plate 2 on the flange plate 2 are installed on the accommodating tank 1 together, the explosion-proof shell on the liquid level meter body 23 can effectively protect the liquid level meter body 23, the liquid level meter body 23 is provided with an explosion-proof function, the cylindrical machine body 24 is integrally connected with the liquid level meter body 23, the cylindrical machine body 24 is used for accommodating internal electronic devices of the liquid level meter body 23, the probe 25 generates sound waves into the accommodating tank 1 to determine the height of the liquid level in the accommodating tank 1, and as the cylindrical machine body 24 is connected onto the flange plate 2 in a sliding manner, the probe 25 at the lower part of the cylindrical machine body 24 can slide relatively with the flange plate 2 when the height of the liquid level in the accommodating tank 1 is unchanged, the distance between the probe 25 and the flange plate 2 is increased, and the possible corrosion damage caused by the probe 25 contacting the corrosive solution in the accommodating tank 1 when the liquid level in the accommodating tank 1 is overhigh is avoided.
Further, the upper surface of the floating plate 31 is fixedly connected with a storage rope 3, the lower surface of the floating plate 31 is fixedly connected with a first cylinder 32, a second cylinder 33 is connected to the side wall of the first cylinder 32 in a sliding manner, a first nut 34 is connected to the side wall of the second cylinder 33 in a threaded manner, and the first nut 34 intermittently abuts against the first cylinder 32.
The floating plate 31 is installed at the lower part of the flange plate 2, and then the floating plate 31 can float at the liquid level position close to the right lower part of the probe 25, the arrangement of the floating plate 31 can enable the ripple generated when the accommodating tank 1 is added with solution to be partially counteracted, and further the liquid level height detected by the probe 25 can be increased to be more accurate, the second cylinder 33 and the first cylinder 32 can relatively slide through the disassembly of the first nut 34, a hole communicated with the first cylinder 32 can be formed in the floating plate 31 so as to balance the air pressure of the cavities in the first cylinder 32 and the second cylinder 33, after the relative positions of the first cylinder 32 and the second cylinder 33 are adjusted, the hole is blocked, so that the cavity space formed between the second cylinder 33 and the first cylinder 32 is changed, the overall density of the floating plate 31 is changed, and the floating plate 31 can be obtained in solutions under different densities.
Further, the lower surface of the flange plate 2 is fixedly connected with a tension sensor 261, the bottom of the tension sensor 261 is fixedly connected with two mounting seats 26, a mounting rod 27 is connected between the two mounting seats 26 in a rotating mode, a micro motor 262 controlled by the tension sensor 261 is fixedly connected to the side face of one mounting seat 26, the mounting rod 27 is fixedly connected to the output end of the micro motor 262, the mounting rod 27 is coaxially and fixedly connected with a storage shaft 28, and the storage rope 3 is wound and connected to the side wall of the storage shaft 28.
The micro motor 262 adopts external power supply to supply power, make the installation pole 27 obtain the installation through setting up mount pad 26, accomodate rope 3 winding connection and take in epaxial 28, make the position of kickboard 31 can be in the lower part of ring flange 2 all the time, adjust the pulling force trigger value of pull sensor 261, make the pulling force size that pull sensor 261 monitored equal mount pad 26, micro motor 262, accomodate rope 3 and plectane 35 total weight power and lift the kickboard 31 that is in the liquid level when the micro distance like the power of one millimeter, pull sensor 261 can not trigger micro motor 262 work, when the pulling force that pull sensor 261 monitored is greater than the total weight power of above-mentioned part, pull sensor 261 control micro motor 262 operation, micro motor 262 drives the synchronous rotation of mount pole 27 and take in epaxial 28, release accomodate rope 3, otherwise accomodate rope 3.
Further, the side surfaces of the two mounting seats 26 far away from each other are respectively fixedly connected with a first mounting ring 29 and a second mounting ring 292, the side wall of the first mounting ring 29 is in threaded connection with a second nut 291, the second nut 291 intermittently abuts against one end of the mounting rod 27, a torsion spring 293 is fixedly connected in the second mounting ring 292, and the other end of the mounting rod 27 is fixedly connected with the torsion spring 293.
The torsion spring 293 is provided to assist the rotation of the storage shaft 28, so that the micro motor 262 controls the rotation of the storage shaft 28 to reduce the pulling force applied to the floating plate 31, when the flange 2 is detached from the storage tank 1, the storage rope 3 is wound around the storage shaft 28, and the second nut 291 is screwed up, so that the second nut 291 abuts against the mounting rod 27, and at this time, the storage shaft 28 is not rotated any more, the total density of the floating plate 31, the first cylinder 32 and the second cylinder 33 is changed by adjusting the volume of the cavity inside the first cylinder 32 and the second cylinder 33, and the total density of the floating plate 31, the first cylinder 32 and the second cylinder 33 is further reduced by adjusting the volume of the cavity formed between the first cylinder 32 and the second cylinder 33 before the device operates, so that the floating plate 31 can float in a low-density solution.
Example two
Referring to fig. 2, 3 and 6, based on the first embodiment, further, a limiting ring 44 is fixedly connected to the bottom of the cylindrical body 24, a tension spring 45 is sleeved in the middle of the cylindrical body 24, and two ends of the tension spring 45 are fixedly connected with the flange 2 and the limiting ring 44 respectively.
By providing the tension spring 45, the cylindrical body 24 can always have a tendency to drive the level gauge body 23 to slide upwards relative to the flange 2.
Further, the lower surface of the flange plate 2 is rotatably connected with a limiting rod 43, and one end, far away from the flange plate 2, of the limiting rod 43 intermittently abuts against a limiting ring 44.
The flange plate 2 and the cylindrical machine body 24 can be spread by arranging the limiting rod 43, so that the tension spring 45 has potential energy.
Further, a rotating shaft 41 is rotatably connected between the two mounting seats 26, a rectangular plate 4 is fixedly connected to the middle of the rotating shaft 41, a pull rope 42 is fixedly connected between the rectangular plate 4 and the limiting rod 43, a circular plate 35 is fixedly connected to one end, close to the floating plate 31, of the storage rope 3, and the circular plate 35 intermittently abuts against the rectangular plate 4.
Through setting up pivot 41 and making rectangular plate 4 obtain the installation, when the liquid level rises to the height that will contact probe 25, the part that the rope 3 was released is tended to vertical in the aforesaid, plectane 35 has dead weight and plectane 35 has sufficient diameter size, make plectane 35 can contact rectangular plate 4, when plectane 35 contacted rectangular plate 4 the liquid level in holding tank 1 reaches the highest threshold, take in the axle 28 no longer accomodate rope 3 this moment, simultaneously when plectane 35 contacted rectangular plate 4, plectane 35 receives rectangular plate 4's blocking, and then the rising of liquid level makes the floating plate 31 that will be in the liquid level at this moment mention the force of micro-distance disappears, namely the pulling force that the moment tension sensor 261 detected is less than mount pad 26, micro-motor 262, take in rope 3 and plectane 35's gross weight force again with being in liquid level at this moment, and then micro-motor 262 moves, further take in the moment, take in the plectane 35 on rope 3 and shift and promote rectangular plate 4, and then make rectangular plate 4 take in as the centre of a circle swing plate 41, when plectane 35 contacts rectangular plate 4, and then take off the spacing gauge body 45 through the body of the swing 45 and stop collar 45, and stop collar 45 release the body of the vibration 45 and the body of the vibration 45.
Further, the side wall of the rotating shaft 41 is fixedly connected with an elastic bending rod 411, one surface of the mounting seat 26, which is positioned on the torsion spring 293, is fixedly connected with an arc plate 412, and one end of the elastic bending rod 411, which is far away from the rotating shaft 41, is fixedly connected with the arc plate 412.
When the limiting rod 43 swings to a vertical state, the tension spring 45 is stretched, the bottom of the limiting rod 43 is provided with a round corner, the most top point of the round corner at the bottom of the limiting rod 43 is close to the edge of the limiting ring 44 when the limiting rod 43 is in the vertical state, the pull rope 42 is connected to one end, close to the limiting ring 44, of the limiting rod 43, the limiting rod 43 can be separated from contact with the limiting ring 44 only by swinging a small angle, at the moment, the limiting rod 43 pulls the rectangular plate 4 through the pull rope 42, the rectangular plate 4 swings by a small angle, the rotating shaft 41 rotates by a small angle, the elastic bent rod 411 further applies torsion force to the rotating shaft 41, and at the moment, the circular plate 35 slightly applies a small force to the rectangular plate 4 so that the rectangular plate 4 rotates.
Example III
Referring to fig. 1 and 2, further, on the basis of the first embodiment and the second embodiment, the upper surface of the flange 2 is fixedly connected with an alarm 5, the middle part of the alarm 5 is fixedly connected with an extension handle 51, one end of the extension handle 51 away from the alarm 5 is fixedly connected with a first pressure-sensitive switch 52 for controlling the alarm 5 to work, and the upper end face of the cylindrical body 24 is provided with two protruding blocks 22, wherein one protruding block 22 intermittently abuts against the first pressure-sensitive switch 52.
The alarm 5 can be powered by a battery, the alarm 5 can specifically adopt an acousto-optic early warning type, when the cylindrical body 24 ascends, a bump 22 on the cylindrical body 24 presses the first pressure-sensitive switch 52, and at the moment, the alarm 5 gives an alarm to remind a worker of overhigh liquid level in the accommodating tank 1.
Further, the electromagnetic valve 12 is installed on the liquid inlet pipe 11, the installation block 13 is fixedly connected to the upper surface of the flange plate 2, the second pressure-sensitive switch 14 for controlling the electromagnetic valve 12 to be closed is arranged at the top of the installation block 13, and the protruding block 22 far away from the first pressure-sensitive switch 52 is intermittently abutted against the second pressure-sensitive switch 14.
While the alarm 5 works, the other lug 22 on the cylindrical body 24 contacts the second pressure-sensitive switch 14, and then the electromagnetic valve 12 controlled by the second pressure-sensitive switch 14 is closed, so that the solution is not supplied to the accommodating tank 1 through the liquid inlet pipe 11, and the occurrence of high-pressure accidents caused by excessive solution in the accommodating tank 1 is prevented;
in summary, the micro motor 262 is provided to control the storage shaft 28 to rotate to lift the floating plate 31, so that the floating plate 31 can always float on the liquid level in the accommodating tank 1, and then the waves generated when the accommodating tank 1 is filled with the solution are counteracted when contacting the floating plate 31, so that the influence of the waves on the surface of the solution on the liquid level detected by the radar level gauge is eliminated, the accuracy of the detection value of the radar level gauge is improved, the staff can accurately read to control the amount of the filled solution, and by providing the cylindrical body 24 to slide on the flange plate 2, the cylindrical body 24 can drive the liquid level gauge body 23 and the probe 25 to ascend when the staff does not observe the liquid level in the accommodating tank 1 and the liquid level in the accommodating tank 1 is too high, the probe 25 is prevented from being damaged due to the fact that the probe 25 contacts the solution possibly having corrosiveness in the accommodating tank 1, in addition, the staff is triggered to work of the alarm 5 to prompt the staff after the cylindrical body 24 ascends, and the electromagnetic valve 12 is controlled to close, and the excessive amount of the filled solution in the accommodating tank 1 is prevented.
Working principle: this explosion-proof radar level gauge with automatic alarm function installs ring flange 2 on holding tank 1 through lock nut 21 during the use, pour into solution into holding tank 1 through feed liquor pipe 11 in, the level gauge body 23 on the ring flange 2 is installed on holding tank 1 jointly with the ring flange 2, explosion-proof shell on the level gauge body 23 can protect for the level gauge body 23 effectively, make the level gauge body 23 have explosion-proof function, cylindrical organism 24 is connected with the level gauge body 23 is integral type, cylindrical organism 24 is used for holding the internal electronics of level gauge body 23, probe 25 takes place the sound wave in order to confirm the height of holding tank 1 interior liquid level to holding tank 1, because cylindrical organism 24 sliding connection is on ring flange 2, and then make the probe 25 of cylindrical organism 24 lower part can take place the relative slip between probe 25 and ring flange 2 when holding tank 1 interior liquid level's height is unchangeable, make the distance of probe 25 can increase for the liquid level in holding tank 1, and then avoided holding tank 1 interior liquid level height to contact the probe 25 and the possibility of corroding in the holding tank 1 and the solution that causes to pour into.
The floating plate 31 is installed at the lower part of the flange plate 2, and then the floating plate 31 can float at the liquid level position close to the right lower part of the probe 25, the arrangement of the floating plate 31 can enable the ripple generated when the accommodating tank 1 is added with solution to be partially counteracted, and further the liquid level height detected by the probe 25 can be increased to be more accurate, the second cylinder 33 and the first cylinder 32 can relatively slide through the disassembly of the first nut 34, a hole communicated with the first cylinder 32 can be formed in the floating plate 31 so as to balance the air pressure of the cavities in the first cylinder 32 and the second cylinder 33, after the relative positions of the first cylinder 32 and the second cylinder 33 are adjusted, the hole is blocked, so that the cavity space formed between the second cylinder 33 and the first cylinder 32 is changed, the overall density of the floating plate 31 is changed, and the floating plate 31 can be obtained in solutions under different densities.
The installation seat 26 is arranged to enable the installation rod 27 to be installed, the storage rope 3 is wound and connected on the storage shaft 28, the position of the floating plate 31 can be always located at the lower portion of the flange plate 2, the tension trigger value of the tension sensor 261 is adjusted, the tension value monitored by the tension sensor 261 is equal to the total weight force of the installation seat 26, the micro motor 262, the storage rope 3 and the circular plate 35, when the floating plate 31 located on the liquid level is lifted by a small distance (such as one millimeter), the tension sensor 261 cannot trigger the micro motor 262 to work, when the tension force monitored by the tension sensor 261 is larger than the total weight force of the components, the tension sensor 261 controls the micro motor 262 to operate, the micro motor 262 drives the installation rod 27 and the storage shaft 28 to synchronously rotate, the storage rope 3 is released, and otherwise the storage rope 3 is stored;
the torsion spring 293 is provided to assist the rotation of the storage shaft 28, so that the micro motor 262 controls the rotation of the storage shaft 28 to reduce the pulling force applied to the floating plate 31, when the flange 2 is detached from the storage tank 1, the storage rope 3 is wound around the storage shaft 28, and the second nut 291 is screwed up, so that the second nut 291 abuts against the mounting rod 27, and at this time, the storage shaft 28 is not rotated any more, the total density of the floating plate 31, the first cylinder 32 and the second cylinder 33 is changed by adjusting the volume of the cavity inside the first cylinder 32 and the second cylinder 33, and the total density of the floating plate 31, the first cylinder 32 and the second cylinder 33 is further reduced by adjusting the volume of the cavity formed between the first cylinder 32 and the second cylinder 33 before the device operates, so that the floating plate 31 can float in a low-density solution.
The cylindrical body 24 can always have the trend of driving the liquid level meter body 23 to slide upwards relative to the flange plate 2 through the tension spring 45, the flange plate 2 and the cylindrical body 24 can be propped open through the limiting rod 43, the tension spring 45 has potential energy, the rectangular plate 4 is installed through the rotating shaft 41, when the liquid level rises to the height of the contact probe 25, the released part of the storage rope 3 tends to be vertical, the circular plate 35 has dead weight and the circular plate 35 has enough diameter, so that the circular plate 35 can contact the rectangular plate 4, when the circular plate 35 contacts the rectangular plate 4, the liquid level in the accommodating tank 1 reaches the highest critical value, the accommodating shaft 28 does not accommodate the storage rope 3 any more, and meanwhile, when the circular plate 35 contacts the rectangular plate 4, the circular plate 35 is blocked by the rectangular plate 4, the lifting force of the floating plate 31 on the liquid level is eliminated by the lifting of the liquid level at this moment, namely the pulling force detected by the pulling force sensor 261 is smaller than the total weight force of the mounting seat 26, the micro motor 262, the storage rope 3 and the circular plate 35, the lifting force of the floating plate 31 on the liquid level is also smaller than the lifting force of the micro distance, the micro motor 262 runs at this moment, the storage rope 3 is further stored, the circular plate 35 on the storage rope 3 moves upwards and pushes the rectangular plate 4 at this moment, the rectangular plate 4 swings around the rotating shaft 41 as the center of a circle, the swinging rectangular plate 4 pulls the limiting rod 43 through the pull rope 42, the limiting rod 43 is separated from contact with the limiting ring 44 at this moment, potential energy of the tension spring 45 is released, the cylindrical body 24 drives the liquid level meter body 23 and the probe 25 to move upwards at this moment, the tension spring 45 is stretched when the limiting rod 43 swings to a vertical state, the bottom of the limiting rod 43 is provided with a round angle, when the limiting rod 43 is in a vertical state, the most top point of the round angle at the bottom of the limiting rod 43 is close to the edge of the limiting ring 44, the pull rope 42 is connected to one end, close to the limiting ring 44, of the limiting rod 43, the limiting rod 43 can be separated from contact with the limiting ring 44 only by swinging by a small angle, at the moment, the limiting rod 43 pulls the rectangular plate 4 through the pull rope 42, the rectangular plate 4 swings by a small angle, the rotating shaft 41 rotates by a small angle, and then the elastic bent rod 411 applies twisting force to the rotating shaft 41, and at the moment, the circular plate 35 slightly applies a small force to the rectangular plate 4 so that the rectangular plate 4 rotates.
The alarm 5 can adopt battery power supply, and the alarm 5 specifically can adopt audible and visual early warning formula, after cylindrical organism 24 risees, a lug 22 on the cylindrical organism 24 extrudees first pressure sensitive switch 52, and alarm 5 sends the police dispatch newspaper this moment, reminds the staff to hold the liquid level in jar 1 too high, and when alarm 5 works, another lug 22 on the cylindrical organism 24 contacts second pressure sensitive switch 14, and then closes by the solenoid valve 12 of second pressure sensitive switch 14 control, and solution no longer supplies to holding jar 1 through feed liquor pipe 11 this moment, prevents to hold the excessive and high pressure emergence accident of solution in jar 1.
According to the invention, the miniature motor 262 is arranged to control the storage shaft 28 to rotate so as to lift the floating plate 31, so that the floating plate 31 can always float on the liquid level in the accommodating tank 1, and further, when the ripple generated when the solution is filled in the accommodating tank 1 contacts the floating plate 31, the influence of the ripple on the surface of the solution on the liquid level detected by the radar level gauge is eliminated, the accuracy of the detection value of the radar level gauge is improved, the accurate reading of a worker is facilitated to control the amount of the filled solution, the cylindrical body 24 is arranged to slide on the flange plate 2, so that the cylindrical body 24 drives the liquid level gauge body 23 and the probe 25 to ascend when the solution level in the accommodating tank 1 is too high due to the fact that the worker does not observe the solution level in the accommodating tank 1, the probe 25 is prevented from being contacted with the solution possibly having corrosiveness in the accommodating tank 1, in addition, the alarm 5 is triggered to work after the cylindrical body 24 ascends so as to prompt the worker, and the electromagnetic valve 12 is controlled to be closed, and the excessive amount of the filled solution in the accommodating tank 1 is prevented.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides an explosion-proof radar level gauge with automatic alarm function, includes flange dish (2) and feed liquor pipe (11) at holding tank (1) top through lock nut (21), the middle part swing joint of flange dish (2) has level gauge body (23), the externally mounted of level gauge body (23) has explosion-proof shell, its characterized in that: the lower part of the liquid level meter body (23) is fixedly connected with a cylindrical machine body (24), the bottom of the cylindrical machine body (24) is fixedly connected with a probe (25), the cylindrical machine body (24) is elastically and slidably connected onto the flange plate (2), and the lower surface of the flange plate (2) is provided with a floating plate (31);
the upper surface of the floating plate (31) is fixedly connected with a storage rope (3), the lower surface of the floating plate (31) is fixedly connected with a first cylinder (32), the side wall of the first cylinder (32) is connected with a second cylinder (33) in a sliding manner, the side wall of the second cylinder (33) is connected with a first nut (34) in a threaded manner, and the first nut (34) is intermittently abutted against the first cylinder (32);
the lower surface of the flange plate (2) is fixedly connected with a tension sensor (261), the bottom of the tension sensor (261) is fixedly connected with two installation seats (26), two installation seats (26) are connected with an installation rod (27) in a rotating mode, a micro motor (262) controlled by the tension sensor (261) is fixedly connected to the side face of one installation seat (26), the installation rod (27) is fixedly connected to the output end of the micro motor (262), the installation rod (27) is coaxially and fixedly connected with a storage shaft (28), and the storage rope (3) is wound and connected to the side wall of the storage shaft (28);
the side surfaces, far away from each other, of the two mounting seats (26) are fixedly connected with a first mounting ring (29) and a second mounting ring (292) respectively, a second nut (291) is connected to the side wall of the first mounting ring (29) in a threaded manner, the second nut (291) intermittently abuts against one end of a mounting rod (27), a torsion spring (293) is fixedly connected in the second mounting ring (292), and the other end of the mounting rod (27) is fixedly connected with the torsion spring (293);
the bottom of the cylindrical machine body (24) is fixedly connected with a limiting ring (44), the middle part of the cylindrical machine body (24) is sleeved with a tension spring (45), and two ends of the tension spring (45) are fixedly connected with the flange plate (2) and the limiting ring (44) respectively;
the lower surface of the flange plate (2) is rotationally connected with a limiting rod (43), and one end, far away from the flange plate (2), of the limiting rod (43) is intermittently abutted against a limiting ring (44).
2. An explosion-proof radar level gauge with automatic alarm function according to claim 1, wherein: the two mounting seats (26) are rotationally connected with a rotating shaft (41), the middle part of the rotating shaft (41) is fixedly connected with a rectangular plate (4), a pull rope (42) is fixedly connected between the rectangular plate (4) and a limiting rod (43), one end, close to the floating plate (31), of the storage rope (3) is fixedly connected with a circular plate (35), and the circular plate (35) and the rectangular plate (4) are intermittently abutted.
3. An explosion-proof radar level gauge with automatic alarm function according to claim 2, wherein: the side wall fixedly connected with elasticity bent rod (411) of pivot (41), one side fixedly connected with arc (412) that mount pad (26) are in torsional spring (293), the one end and arc (412) fixed connection of pivot (41) are kept away from to elasticity bent rod (411).
4. An explosion-proof radar level gauge with automatic alarm function according to claim 1, wherein: the upper surface fixedly connected with siren (5) of ring flange (2), the middle part fixedly connected with of siren (5) lengthens handle (51), the one end fixedly connected with that lengthens handle (51) and keep away from siren (5) is used for controlling first pressure sensitive switch (52) of siren (5) work, the up end of cylindrical organism (24) is equipped with two lugs (22), one of them lug (22) and first pressure sensitive switch (52) intermittent type offset.
5. An explosion-proof radar level gauge with automatic alarm function according to claim 4, wherein: the electromagnetic valve (12) is installed to feed liquor pipe (11), the upper surface fixedly connected with installation piece (13) of ring flange (2), the top of installation piece (13) is equipped with second pressure sensitive switch (14) that are used for controlling solenoid valve (12) to close, keeps away from lug (22) and second pressure sensitive switch (14) intermittent type of first pressure sensitive switch (52) offset.
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| CN116295714A (en) | 2023-06-23 |
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