CN110749363B - Electrode liquid level detection device driven by floating ball and application thereof - Google Patents
Electrode liquid level detection device driven by floating ball and application thereof Download PDFInfo
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- CN110749363B CN110749363B CN201911005984.1A CN201911005984A CN110749363B CN 110749363 B CN110749363 B CN 110749363B CN 201911005984 A CN201911005984 A CN 201911005984A CN 110749363 B CN110749363 B CN 110749363B
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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
- G01F23/30—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 floats
- G01F23/40—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 floats using bands or wires as transmission elements
- G01F23/44—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 floats using bands or wires as transmission elements using electrically actuated indicating means
- G01F23/443—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 floats using bands or wires as transmission elements using electrically actuated indicating means using electromechanically actuated indicating means
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Abstract
The invention relates to the technical field of water supply and drainage of railway systems, in particular to a liquid level detection device of a sewage tank in a water supply and drainage sanitary system of a railway motor car, a passenger car, a locomotive and the like and application thereof. The method comprises the following steps: the cavity structure shell consists of an upper sealing cover and a cavity, the upper end surface of the cavity is connected with the upper sealing cover, and the upper sealing cover is provided with a through hole; one end of each of the first electrode and the second electrode penetrates through the through hole in the upper sealing cover and then extends into the ascending cavity; the electrode fixing device is arranged on the parts of the first electrode and the second electrode, which are positioned outside the shell, so that the electrodes are supported on the upper sealing cover and can move in the through hole; the wire sliding nozzle is of a conical structure with an unsealed bottom surface, the conical tip part of the wire sliding nozzle is provided with a hole, and the bottom surface is connected with the lower end surface of the cavity; the other end of the flexible rope is connected with the floating ball. The invention utilizes the floating ball floating principle and the electrode liquid level principle to overcome the defect of inaccurate liquid level signal caused by corrosion of the sewage environment to the liquid level device and dirt attachment.
Description
Technical Field
The invention relates to the technical field of water supply and drainage of railway systems, in particular to a liquid level detection device of a sewage tank in a water supply and drainage sanitary system of a railway motor car, a passenger car, a locomotive and the like and application thereof.
Background
The information disclosed in this background of the invention is only for enhancement of understanding of the general background of the invention and is not necessarily to be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
At present, in railway and civil water supply and drainage and sanitary systems, liquid level detection technologies are quite mature, liquid level detection devices are various in types, and liquid level detection devices applied to railway systems at present mainly comprise floating ball type, electromagnetic type, photoelectric type, capacitance type and the like. For example, a float-type level gauge of cursor display disclosed in patent document 201510815681.1; a side-mounted magnetic float level gauge disclosed in patent document 201810442941.9; a capacitive level gauge disclosed in patent document 201620938397.3, and the like.
However, the present inventors found in long-term studies that: as the environment in the sewage tank of the sanitary system of the railway motor car, the passenger car and the locomotive is obviously severe and the sewage components are complex, the sewage tank mainly stores the excrement and domestic sewage of passengers and crewmembers, is in an acidic sticky state, is easy to adhere, and has extremely high requirements on the performance of a liquid level detection device placed in the sewage tank; the liquid level detection device applied at present generally has poor corrosion resistance, is frequently damaged after being corroded, or cannot complete normal signal detection when being adhered by dirt, so that the phenomenon that a detection signal result is inconsistent with the actual liquid level condition is generated, the signal error conveyed to a water supply and drainage sanitary control system is caused, the control system executes wrong control instructions, the problems of disturbing normal drainage action or failing to drain water in time and the like occur occasionally, and even normal driving is influenced.
Disclosure of Invention
In view of the above problems, the inventor of the present invention further finds that the main reason is that the liquid level detection signal is inaccurate due to corrosion of the sewage in the sewage tank to the liquid level device and adhesion of the sewage to the liquid level detection signal, so that the normal use of the water supply and drainage and the sanitary system is affected by misinformation. Therefore, the invention provides an electrode liquid level detection device driven by a floating ball and application thereof. The invention fully utilizes the floating ball floating principle and the electrode liquid level principle to complete the acquisition of the tank body liquid level electric signals and carry out encapsulation protection on the tank body liquid level electric signals, overcomes the defect of inaccurate liquid level signals caused by corrosion and dirt adhesion of a severe sewage environment to a liquid level device, and has the characteristics of reliable performance and convenient installation and use.
In order to achieve the purpose, the invention discloses the following technical scheme:
a floating ball driven electrode liquid level detection device comprises: the electrode fixing device comprises a shell, a first electrode, a second electrode, an electrode on-off control mechanism, a wire sliding nozzle and a floating ball; wherein:
the shell is of a structure with a cavity and comprises an upper sealing cover and a cavity, the upper end face of the cavity is connected with the upper sealing cover, a through hole is formed in the upper sealing cover, one end of each of the first electrode and the second electrode penetrates through the through hole and then extends into the cavity, and electrode fixing devices are arranged on the parts, located outside the shell, of the first electrode and the second electrode, so that the electrodes are supported on the upper sealing cover and can move in the through hole. The wire sliding nozzle is of a conical structure with an unsealed bottom surface, a conical tip part of the wire sliding nozzle is provided with a hole, and the bottom surface of the wire sliding nozzle is connected with the lower end surface of the cavity.
The electrode on-off control mechanism is arranged in the cavity and comprises: the bridge plate is connected with one end of the elastic component through the positioning seat, the bridge plate is arranged close to the electrode, the other end of the elastic component is fixed on the lower end face of the cavity, and one end of the flexible rope is fixed on the elastic component; the floater comprises toper cavity and hemisphere head, the bottom surface of toper cavity is sealed to the hemisphere head, forms "tumbler" shape structure similar to the inversion, just the awl point department of toper cavity is provided with the balancing weight, the other end of flexible rope is worn out under the cavity terminal surface and is connected with the sphere of hemisphere head behind the hole of the awl point department of slide-wire mouth.
Compared with the prior art, the invention has the following beneficial effects:
(1) the liquid level detection device can be used in a severe sewage environment, and the defect of inaccurate liquid level signal caused by corrosion and dirt adhesion of the sewage liquid level device is effectively overcome.
(2) The electrode in the liquid level detection device is not in contact with the liquid level, so that the transmission of electric signals in the detected sewage and the interference of the electric signals on external control signals are avoided, the detection result is more accurate, and the reliability is high.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
Fig. 1 is a schematic structural diagram of a housing according to an embodiment of the present invention.
FIG. 2 is a schematic structural diagram of a liquid level detection apparatus according to an embodiment of the present invention.
FIG. 3 is a schematic structural view illustrating a floating ball not contacting the liquid surface according to another embodiment of the present invention.
FIG. 4 is a schematic view of a floating ball contacting a liquid surface according to another embodiment of the present invention.
The designations in the above figures represent respectively: 1-shell, 1.1-upper sealing cover, 1.2-cavity; 2-a first electrode, 3-a second electrode, 4-an electrode fixture; 5-electrode on-off control mechanism, 5.1-bridging plate, 5.2-elastic component, 5.3-positioning seat and 5.4-flexible rope; 6-a slide nozzle; 7-floating ball, 7.1-conical cavity, 7.2-hemispherical end socket and 7.3-balancing weight; 8-liquid level box body to be measured; 9-liquid level.
Detailed Description
It is to be noted that, unless otherwise specified, 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.
It is to be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
For convenience of description, the words "up", "down", "left" and "right" in the present invention, if any, merely indicate that the directions of movement are consistent with those of the drawings, and do not limit the structure, but merely facilitate the description of the invention and simplify the description, rather than indicate or imply that the referenced device or element needs to have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
The terms "mounted", "connected", "fixed", and the like in the present invention are to be understood in a broad sense, and may be, for example, fixedly connected, detachably connected, or integrated; the two components can be connected mechanically or electrically, directly or indirectly through an intermediate medium, or connected internally or in an interaction relationship, and the terms used in the present invention should be understood as having specific meanings to those skilled in the art.
Just as mentioned earlier, the phenomenon that the detection signal does not accord with the actual liquid level condition ubiquitous of the liquid level detection device who uses at present, this drainage that leads to this type of filth case appears the deviation, can't take place occasionally in the scheduling problem of drainage. Therefore, the invention provides the electrode liquid level detection device driven by the floating ball by fully utilizing the floating ball floating principle and the electrode liquid level principle.
The invention will now be further described with reference to the drawings and detailed description.
Referring to fig. 1 and 2, the floating ball driven electrode liquid level detection device designed by the invention comprises: the device comprises a shell 1, a first electrode 2, a second electrode 3, an electrode fixing device 4, an electrode on-off control mechanism 5, a slide wire nozzle 6 and a floating ball 7; the device adopts the mounting means of being surveyed the liquid level of perpendicular to, wherein:
the shell 1 is of a structure with a cavity and comprises an upper sealing cover 1.1 and a cavity 1.2, the upper end face of the cavity 1.2 is connected with the upper sealing cover 1.1, and a through hole is formed in the upper sealing cover 1.1.
Furthermore, the electrode fixing device 4 is arranged on the parts of the first electrode 2 and the second electrode 3, which are positioned outside the shell 1, so that the electrodes are supported on the upper sealing cover 1.1 and can move in the through hole, the parts of the two electrodes, which extend into the cavity 1.2, can keep stable and equal length, the electrode on-off control mechanism 5 can be in synchronous contact with the two electrodes, and the detection accuracy is improved.
Electrode on-off control mechanism 5 sets up in cavity 1.2, and electrode on-off control mechanism 5 includes: bridging board 5.1, elastic component 5.2, positioning seat 5.3 and flexible rope 5.4, realize connecting through positioning seat 5.3 between bridging board 5.1 and the one end of elastic component 5.2, and bridging board 5.1 is close to first electrode 2, second electrode 3 and sets up, the other end of elastic component 5.2 is fixed on the lower terminal surface of cavity 1.2, the one end of flexible rope 5.4 is fixed on elastic component 5.2. Under the pulling of the flexible rope 5.4, the bridging plate 5.1 moves downwards to disconnect the two electrodes, and when the pulling force of the flexible rope 5.4 is smaller than the upward elastic force of the spring 6, the bridging plate 5 moves upwards to contact the electrodes and then connects the two electrodes, and the two electrodes are sequentially circulated in a reciprocating mode to achieve on-off control of the electrodes.
Further, in some implementations, a sealing structure is provided at the hole of the conical tip portion of the cord sliding nozzle 6 to better prevent sewage from entering the cord sliding nozzle 6.
The floater 7 comprises toper cavity 7.1 and hemisphere head 7.2, the bottom surface of toper cavity 7.1 is sealed to hemisphere head 7.2, forms "tumbler" shape structure similar to the inversion, just the awl point department of toper cavity 7.1 is provided with balancing weight 7.3, the other end of flexible rope 5.4 is worn out and is connected with hemisphere head 7.2's sphere behind the hole of cavity 1.2 lower extreme face and the awl point department of slide-wire mouth 6.
It will be appreciated that the float 7 is the source of the pulling force for the flexible cord 5.4, which is not entirely hollow, the surface is smooth, because the conical tip of the conical cavity 7.1 is provided with a balancing weight 7.3, the structure can keep the whole floating ball 10 in an upright state on the liquid level, and a very small contact surface is kept between the floating ball and the liquid level, so that the adhesion of dirt can be effectively avoided, the hemispherical seal head 7.2 positioned above can further provide larger buoyancy for the floating ball, and the floating ball floats on the water surface when contacting with sewage, and the pulling force of the floating ball to the elastic component 5.2 is changed along with the change of the sewage level, otherwise, if the floating ball is too heavy to float on the water surface, the elastic part 5.2 is always in a larger compression state, therefore, the bridging plate 5.1 can not communicate the two electrodes for drainage, so that the drainage deviation is caused, and the drainage can not be carried out in time.
Further, in some implementations, the floating ball 7 is made of stainless steel, which is corrosion resistant and can provide sufficient tension for the nylon connecting wire 9.
In other implementations, the weight 7.3 may also be formed by a solid structure at the tip of the conical cavity 7.1, and may be integrally processed with the conical cavity 7.1.
Further, in some implementations, the electrode fixing device 4 is a nut, the outer surfaces of the first electrode 2 and the second electrode 3 are both provided with external threads matched with the internal threads of the nut, and the diameter of the nut is larger than that of the through hole on the upper sealing cover 1.1, so that the first electrode 2 and the second electrode 3 are both supported on the upper sealing cover 1.1.
It should be understood that the design of the nut and the electrode fit enables the electrode to be easily inserted into or removed from the cavity 1.2, facilitating the replacement of the electrode; more importantly, the length of the electrode extending into the cavity 1.2 can be adjusted through the rotating nut, so that the two electrodes extending into the cavity 1.2 are kept equal in length as far as possible, the electrode on-off control mechanism 5 can be ensured to be in synchronous contact with the two electrodes, and the detection accuracy is improved.
In addition, in other realization, all set up two nuts as electrode fixing device 4 on every electrode, can go out the liquid level information transmission that the floater was gathered through two nuts with the wire crimping on the electrode to.
In addition, in other realizations, the outer surface of the cavity 1.2 is provided with threads so as to be matched with screw holes in the sewage tank, and the electrode liquid level detection device driven by the whole floating ball is detachably connected to the sewage tank.
Further, in some implementations, the elastic component 5.2 is a spring, the flexible rope is a nylon rope, the housing 1 is also made of nylon, and the material has good corrosion resistance, so that the service life of the liquid level meter in a severe sewage tank environment can be prolonged.
It will be appreciated that the present invention provides the advantage of designing the flexible line 5.4 for transmitting buoyancy, pulling force of the float, to be flexible, rather than a rigid line/rod: the floater can change at any time along with the change of liquid level, can not receive flexible rope 5.4's restraint to can keep the floater to float on the surface of water always, can minimize the area of contact of floater and sewage like this, can effectively avoid the filth adhesion, and the filth adhesion leads to the liquid level signal inaccurate easily. However, if the rigid rope/rod causes the floating ball to rise to a certain degree along with the sewage level, the rigid rope/rod has no further rising space due to the restraint of the electrode, the upper sealing cover 1.1 and the like, and then the floating ball is pushed downwards, so that the floating ball is soaked in the sewage in the state, the contact area of the floating ball and the sewage is obviously increased, more pollutants are adhered, and the accuracy of liquid level signal detection is influenced.
In addition, in other implementations, referring to fig. 1, the cross section of the upper cover 1.1 is hexagonal, i.e. similar to a hexagonal head of a hexagon bolt, the cavity 1.2 is cylindrical, and the diameter of the upper cover 1.1 is larger than that of the cavity 1.2, so that the whole liquid level detection device is supported on the housing of the dirt box through the upper cover 1.1 (see fig. 3 and 4); in addition, the hexagonal upper cover 1.1 facilitates the installation and fastening of the upper cover 1.1 to the cavity 1.2 by means of common tools, at which time a detachable connection between the upper cover 1.1 and the cavity 1.2, for example a screw connection or an upper port of the cavity 1.2 snapping into a snap groove on the upper cover 1.1, is provided.
Further, in other implementations, the liquid level detection device of the present invention is also used in a sanitary system for supplying and draining water of a motor car, a passenger car, a locomotive, etc., and is used for detecting the liquid level in a sewage tank.
Further, the basic usage principle of the above-mentioned liquid level meter of the present invention is illustrated by fig. 3 and 4, first, as shown in fig. 3, the liquid level detection device is vertically installed on the upper surface of the measured liquid level tank 8, wherein, the entire liquid level detection device is supported on the upper surface of the liquid level tank 8 by the upper sealing cover 1.1, at this time, the liquid level is low, the floating ball 7 is not in contact with the liquid level 9, and the floating ball 7 is completely in a vertical state under the pure gravity; due to the self gravity of the floating ball 7, the elastic component 5.2 (taking a spring as an example) is compressed, and the bridging plate 5.1 is pulled to move downwards to be separated from the first electrode 2 and the second electrode 3, so that the two electrodes are disconnected, the disconnection action of the electrode 1 is completed, and at the moment, the liquid level does not reach the drainage height.
With reference to fig. 4, as the liquid level 9 gradually rises, the floating ball 7 is offset from its own gravity by the buoyancy of the liquid level, the pulling force of the floating ball on the bridging plate 5.1 is reduced, the spring 6 generates an upward pushing force under the action of elastic potential energy, the bridging plate 5.1 is pushed to move upward, the first electrode 2 and the second electrode 3 are synchronously communicated, and the drainage system starts drainage.
It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and not intended to limit the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and equivalents can be made in the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of them.
Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (11)
1. The utility model provides a floater driven electrode liquid level detection device which characterized in that includes:
the shell is of a structure with a cavity and consists of an upper sealing cover and a cavity, the upper end face of the cavity is connected with the upper sealing cover, and the upper sealing cover is provided with a through hole;
one end of each of the first electrode and the second electrode penetrates through the through hole in the upper sealing cover and then extends into the ascending cavity;
the electrode fixing device is arranged on the parts of the first electrode and the second electrode, which are positioned outside the shell, so that the electrodes are supported on the upper sealing cover and can move in the through hole;
the wire sliding nozzle is of a conical structure with an unsealed bottom surface, the conical tip part of the wire sliding nozzle is provided with an opening, and the bottom surface of the wire sliding nozzle is connected with the lower end surface of the cavity;
electrode on-off control mechanism, it sets up in the cavity, electrode on-off control mechanism includes: the bridge plate is connected with one end of the elastic component through the positioning seat, the bridge plate is arranged close to the first electrode and the second electrode, the other end of the elastic component is fixed on the lower end face of the cavity, and one end of the flexible rope is fixed on the elastic component;
the floating ball is composed of a conical cavity and a hemispherical head, the bottom surface of the conical cavity is sealed by the hemispherical head, a balancing weight is arranged at the conical tip of the conical cavity, and the other end of the flexible rope penetrates through a hole in the conical tip of the line sliding nozzle and the lower end face of the cavity and then is connected with the spherical surface of the hemispherical head;
the floating ball is made of stainless steel.
2. The floating ball driven electrode liquid level detection device according to claim 1, wherein the electrode fixing device is a nut, external threads matched with internal threads of the nut are arranged on the outer surfaces of the first electrode and the second electrode, and the diameter of the nut is larger than that of a through hole in the upper sealing cover.
3. The floating ball driven electrode liquid level detection device according to claim 2, wherein two nuts are provided on each electrode as electrode fixing means.
4. The floating ball driven electrode liquid level detection device according to claim 1, wherein the outer surface of said cavity is provided with threads.
5. The floating ball driven electrode liquid level detection device according to claim 1, wherein said elastic member is a spring.
6. The floating ball driven electrode liquid level detection device as claimed in claim 1, wherein the cross section of said upper cover is hexagonal, said cavity is cylindrical, and the diameter of said upper cover is larger than the diameter of said cavity.
7. The floating ball driven electrode liquid level detection device according to claim 1, wherein said weight block is formed by a conical cavity with a solid tip.
8. The floating ball driven electrode liquid level detection device according to any one of claims 1 to 7, wherein a sealing structure is provided at a hole of a tapered tip portion of the slider nozzle.
9. The floating ball driven electrode liquid level detection device according to any one of claims 1 to 7, wherein the flexible rope is a nylon rope.
10. The floating ball driven electrode liquid level detection device according to any one of claims 1 to 7, wherein the housing is made of nylon.
11. The floating ball driven electrode liquid level detection device of any one of claims 1 to 10, wherein the floating ball driven electrode liquid level detection device is applied to a water supply and drainage sanitary system of a motor car, a passenger car and a locomotive.
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| CN201911005984.1A CN110749363B (en) | 2019-10-22 | 2019-10-22 | Electrode liquid level detection device driven by floating ball and application thereof |
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| CN201911005984.1A CN110749363B (en) | 2019-10-22 | 2019-10-22 | Electrode liquid level detection device driven by floating ball and application thereof |
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| US3896281A (en) * | 1973-11-07 | 1975-07-22 | Evgeny Ilich Feoktistov | Magnetically actuated liquid level signalling device |
| RU2229691C2 (en) * | 2002-08-08 | 2004-05-27 | Поляев Геннадий Владимирович | Device measuring level of liquid |
| CN201034085Y (en) * | 2007-04-27 | 2008-03-12 | 刘国平 | Water-tower and pool auto-pumping controller |
| CN201435011Y (en) * | 2009-03-20 | 2010-03-31 | 舒满鹏 | Reservoir water level controller |
| CN102385394B (en) * | 2011-08-22 | 2013-01-23 | 甘甜 | Automatic monitoring unit for reservoir level |
| CN203116812U (en) * | 2013-02-06 | 2013-08-07 | 姚敏 | Liquid fullness alarm |
| CN203118862U (en) * | 2013-03-15 | 2013-08-07 | 河海大学常州校区 | Water-level detecting switch |
| US10399690B2 (en) * | 2014-07-24 | 2019-09-03 | Hamilton Sundstrand Corporation | Ecology fuel return systems |
| CN205373824U (en) * | 2016-02-26 | 2016-07-06 | 河北钢铁集团矿业有限公司 | Water tank waterline alarm device |
| CN107907186A (en) * | 2017-11-20 | 2018-04-13 | 南通海狮船舶机械有限公司 | Elastic force type liquid level gauge |
| CN208314576U (en) * | 2018-06-29 | 2019-01-01 | 浙江固特热熔胶有限公司 | A kind of leveling device |
| CN109932023A (en) * | 2019-04-18 | 2019-06-25 | 扬州佳境环境科技股份有限公司 | A kind of single switch two point form liquidometer |
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Effective date of registration: 20230217 Address after: 215557 Zhengwen Road, Yushan High-tech Industrial Park, Changshu, Suzhou, Jiangsu Province Patentee after: Jiangsu CRRC Huateng Environmental Protection Technology Co.,Ltd. Address before: 250101 No. 3666 Century Avenue, Jinan High-tech Zone, Shandong Province Patentee before: SHANDONG CRRC HUATENG ENVIRONMENT Co.,Ltd. |
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