CN212300532U - Multi-parameter liquid level sensor - Google Patents
Multi-parameter liquid level sensor Download PDFInfo
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- CN212300532U CN212300532U CN202020784541.9U CN202020784541U CN212300532U CN 212300532 U CN212300532 U CN 212300532U CN 202020784541 U CN202020784541 U CN 202020784541U CN 212300532 U CN212300532 U CN 212300532U
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- liquid level
- level sensor
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- floater
- temperature
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Abstract
The utility model discloses a multi-parameter level sensor belongs to sensor technical field, and it includes the casing, the lower surface of casing is provided with measures the guide bar subassembly, the surface of measuring the guide bar subassembly is provided with buffering subassembly and floater structure respectively. This compound floater level sensor, through setting up half floater, hollow guide arm, magnet steel and level sensor circuit board, when the level sensor circuit board measurement does not have the liquid level, pressure sensor synchronous measurement's pressure is the inside empty cabin pressure of cargo hold, temperature sensor synchronous measurement's temperature is the inside air temperature in cabin, be the inside ambient temperature in cabin promptly, when the level sensor circuit board measurement has the liquid level, pressure sensor synchronous measurement's pressure is cargo hold pressure, temperature sensor synchronous measurement's temperature is the cabin and loads the temperature or the inside ambient temperature in cabin of goods, thereby can realize the automatic measure of liquid level, control and record, made things convenient for people to use, make the practicality of this device higher.
Description
Technical Field
The utility model belongs to the technical field of the sensor, specifically be a multi-parameter level sensor.
Background
The floating ball liquid level sensor has the characteristics of simple structure, simple and convenient operation, good reliability, high precision and low consumption, is quite popular with people, and is widely used for detecting the water level in a container, treating sewage, storing petrochemical materials, and measuring and controlling the liquid level industry of food beverages and underground liquid storage tanks of gas stations, but the common floating ball sensor can only measure on site in actual use, is difficult to achieve the remote measurement and control of the liquid level, and is difficult to measure the liquid level of goods loaded in one cabin, the pressure in the cabin and the temperature of the goods or the cabin simultaneously, thereby being inconvenient for people to use and ensuring lower practicability.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
In order to overcome the above-mentioned defect of prior art, the utility model provides a multi-parameter level sensor has solved ordinary floater sensor and can only measure at the scene when in-service use, is difficult to reach remote measurement and control to the liquid level to be difficult to liquid level, cabin internal pressure, goods or the cabin temperature that simultaneous measurement a cabin loaded the goods measure, thereby people's use is not convenient for, makes the lower problem of practicality.
(II) technical scheme
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a multi-parameter level sensor, includes the casing, the lower surface of casing is provided with measures the guide bar subassembly, the surface of measuring the guide bar subassembly is provided with buffer unit and floater structure respectively, the lower fixed surface of measuring the guide bar subassembly is connected with mounting flange.
As a further aspect of the present invention: the pressure sensor is arranged in the shell, the right side face of the inner wall of the shell is communicated with the left side face of the electrical interface flange, an outlet stuffing box is arranged in the electrical interface flange, and a connecting flange is fixedly connected to the lower surface of the shell.
As a further aspect of the present invention: the measuring guide rod assembly comprises a hollow guide rod, a liquid level sensor circuit board is arranged in the hollow guide rod, three temperature sensors are respectively arranged on the front side of the liquid level sensor circuit board, and two fixing pieces are respectively clamped on the outer surface of the hollow guide rod.
As a further aspect of the present invention: the liquid level sensor circuit board includes no magnetism metal sheet, and the upper surface of no magnetism metal sheet passes through the lower fixed surface of high temperature double faced adhesive tape and flexible circuit board to be connected, and the upper surface of flexible circuit board is provided with a plurality of magnetic sensor and resistance, and a plurality of resistance, a plurality of magnetic sensor, no magnetism metal sheet, high temperature double faced adhesive tape and flexible circuit board are provided with same insulating protective sheath outward.
As a further aspect of the present invention: the buffer assembly comprises two connecting rings, the opposite surfaces of the two connecting rings are fixedly connected through a buffer spring, and the connecting rings and the buffer spring are both sleeved on the outer surface of the hollow guide rod.
As a further aspect of the present invention: the floater structure includes two half floater, two the opposite face fixed connection of half floater, the bar in the ball has been cup jointed in half floater, two the bar all cup joints outside hollow guide arm in the ball, the below the ball bar is provided with the retaining ring for the axle outward, the retaining ring for the axle is provided with the magnet steel outward, the top the counter weight hole has been seted up to the upper surface of half floater, the below the right flank of the bar in the ball is provided with two centre gripping bolts.
(III) advantageous effects
Compared with the prior art, the beneficial effects of the utility model reside in that:
1. the composite floating ball liquid level sensor is provided with semi-floating balls, a hollow guide rod, magnetic steel and a liquid level sensor circuit board, when the two semi-floating balls float up and down along the hollow guide rod along with the liquid level change, the magnetic steel in the two semi-floating balls controls the reed switch on the corresponding position of the liquid level sensor circuit board to be switched on and off, so that the total resistance or voltage of the liquid level sensor circuit board is linearly changed, a transmitter converts the changed resistance or voltage signal into a 4-20mA standard current signal to be output and remotely transmitted to an automatic control device, when the liquid level sensor circuit board does not measure the liquid level, the liquid level sensor circuit board is defaulted to be an empty cabin, the pressure synchronously measured by a pressure sensor is the pressure in the empty cabin, the temperature synchronously measured by a temperature sensor is the air temperature in the cabin, namely the ambient temperature in the cabin, when the multi, can regard as the cabin to be equipped with the goods, pressure sensor synchronous measurement's pressure is the cargo hold pressure, and temperature sensor synchronous measurement's temperature is the temperature or the inside ambient temperature in cabin that the cabin loaded the goods to can realize automatic measure, control and the record of liquid level, made things convenient for people to use, make the practicality of this device higher.
2. This compound floater level sensor respectively is equipped with a buffer spring through upper portion and lower part at hollow guide rod for when half floater sinks the bottom or when the come-up to the top, buffer spring can cushion half floater, thereby has avoided half floater to come-up to the top or has sunk when the bottom and other structures produce rigid collision and lead to its problem of damaging, has ensured the normal life of half floater.
Drawings
Fig. 1 is a front view of the present invention;
FIG. 2 is a schematic view of the sectional structure of the shell of the present invention;
FIG. 3 is a schematic cross-sectional view of the measuring guide rod assembly of the present invention;
fig. 4 is a schematic view of a cross-sectional structure of the floating ball structure of the present invention;
fig. 5 is a front view of the buffering assembly of the present invention;
in the figure: the device comprises a shell 1, a pressure sensor 11, a 12 outgoing line stuffing box, an electrical interface flange 13, a 14 connecting flange, a 2 measuring guide rod component, a 21 hollow guide rod, a 22 liquid level sensor circuit board, a 23 temperature sensor, a 24 fixing component, a 3 buffer component, a 31 connecting ring, a 32 buffer spring, a 4 floating ball structure, a 41 semi-floating ball, a 42 ball inner rod, a 43-axis retainer ring, 44 magnetic steel, a 45 counterweight hole, a 46 clamping bolt and a 5 fixing flange.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
As shown in fig. 1-5, the utility model provides a technical solution: the utility model provides a multi-parameter level sensor, includes casing 1, and casing 1's lower surface is provided with measures guide bar subassembly 2, and the surface of measuring guide bar subassembly 2 is provided with buffer unit 3 and floater structure 4 respectively, measures guide bar subassembly 2's lower fixed surface and is connected with mounting flange 5, through setting up mounting flange 5 for the user can use fixing tool such as bolt to install fixedly to the position of this device, thereby made things convenient for the user to the fixed of this device position.
Specifically, as shown in fig. 2, a pressure sensor 11 is arranged in the housing 1, through the arrangement of the pressure sensor 11, when the liquid level sensor circuit board 22 measures no liquid level, the liquid level sensor circuit board is defaulted to be an empty compartment, the pressure synchronously measured by the pressure sensor 11 is the pressure of the empty compartment in the cargo compartment, when the liquid level is measured by the multiple liquid level sensor circuit board 22, the cargo compartment can be considered to be filled with cargo, the pressure synchronously measured by the pressure sensor 11 is the pressure of the cargo compartment, the right side surface of the inner wall of the housing 1 is communicated with the left side surface of the electrical interface flange 13, an outlet stuffing box 12 is arranged in the electrical interface flange 13, and the lower surface.
Specifically, as shown in fig. 3, the measuring guide rod assembly 2 includes a hollow guide rod 21, a liquid level sensor circuit board 22 is disposed in the hollow guide rod 21, three temperature sensors 23 are disposed on the front side of the liquid level sensor circuit board 22, and by disposing the temperature sensors 23, the three temperature sensors 23 are disposed at the upper, middle and lower positions of the liquid level sensor circuit board 22, respectively, so that the device can measure temperatures at different heights in the cabin, two fixing members 24 are respectively clamped on the outer surface of the hollow guide rod 21, the liquid level sensor circuit board 22 includes a non-magnetic metal plate, and by disposing the non-magnetic metal substrate, and requiring the same expansion coefficient as the flexible circuit board, thereby improving the tensile strength of the liquid level sensor circuit board 22, facilitating installation, debugging, transportation and storage of the liquid level sensor circuit board 22, the upper surface of the non-magnetic metal plate is fixedly connected with the lower surface of the flexible circuit, the flexible circuit board pastes on no magnetism metal sheet, can tailor according to actual need length, mainly used bears level sensor circuit board 22 and level measurement circuit, the upper surface of flexible circuit board is provided with a plurality of magnetic sensor and resistance, the magnetic sensor adopts magnetic induction components and parts, make the stable performance of this device reliable, a plurality of resistance, a plurality of magnetic sensor, no magnetism metal sheet, high temperature double faced adhesive tape and flexible circuit board are provided with same insulating protective sheath outward, through setting up insulating protective sheath, make insulating protective sheath can protect high level sensor circuit, make it dampproofing, the mould proof, it is anti-oxidant, it is insulating to casing 1.
Specifically, as shown in fig. 4, the floating ball structure 4 includes two semi-floating balls 41, opposite surfaces of the two semi-floating balls 41 are fixedly connected, an inner ball rod 42 is clamped in the semi-floating ball 41, the two inner ball rods 42 are both sleeved outside the hollow guide rod 21, due to the buoyancy, the semi-floating ball 41 floats up and down through the hollow guide rod 21, contact can occur between the inner ball rod 42 and the hollow guide rod 21, in order to ensure working safety, a flexible clamping contact structure is arranged between the hollow guide rod 21 and the inner ball rod 42 to ensure reliable contact between the inner ball rod 42 and the hollow guide rod 21, so as to avoid the problem of electric spark or electric arc, so that the semi-floating ball 41 can stably run up and down in liquid, an axial check ring 43 is arranged outside the lower ball rod 42, a magnetic steel 44 is arranged outside the axial check ring 43, a counterweight hole 45 is arranged on the upper surface of the upper semi-floating ball 41, and the device can, the weight of the floating ball is adjusted, so that the suspension position of the semi-floating ball 41 in the corresponding liquid is ensured, and two clamping bolts 46 are arranged on the right side surface of the lower ball inner rod 42.
Specifically, as shown in fig. 5, the buffer assembly 3 includes two connection rings 31, the opposite surfaces of the two connection rings 31 are fixedly connected through a buffer spring 32, the connection rings 31 and the buffer spring 32 are both sleeved on the outer surface of the hollow guide rod 21, and the buffer spring 32 is respectively arranged on the upper portion and the lower portion of the hollow guide rod 21, so that when the semi-floating ball 41 sinks to the bottom or floats to the top, the buffer spring 32 can buffer the semi-floating ball 41, thereby avoiding the problem that the semi-floating ball 41 is damaged due to hard collision with other structures when floating to the top or sinks to the bottom, and ensuring the normal service life of the semi-floating ball 41.
The utility model discloses a theory of operation does:
s1, when the two semi-floating balls 41 float up and down along the hollow guide rod 21 along with the liquid level change, the magnetic steel 44 in the two semi-floating balls 41 controls the reed switches at the corresponding positions of the liquid level sensor circuit board 22 to be switched off in an attracting mode, so that the total resistance or voltage of the liquid level sensor circuit board 22 changes linearly, the changed resistance or voltage signal is converted into a standard current signal of 4-20mA by the transmitter to be output and is remotely transmitted to automatic control equipment, and therefore the automatic measurement, control and recording of the liquid level can be achieved;
s2, when the cargo level of the cabin changes, the semi-floating ball 41 floats up and down along the hollow guide rod 21 along with the change of the liquid level, when the semi-floating ball 41 is at the lowest part of the hollow guide rod 21, the liquid level sensor circuit board 22 outputs a set of low liquid level current signals and upper, middle and lower three-point temperature measuring signals, when the semi-floating ball 41 is at the uppermost part of the hollow guide rod 21, the liquid level sensor circuit board 22 outputs a set of high liquid level current signals and upper, middle and lower three-point temperature measuring signals, when the semi-floating ball 41 is at a certain position in the middle of the hollow guide rod 21, the liquid level sensor circuit board 22 outputs a set of liquid level current signals and upper, middle and lower three;
s3, a liquid level sensor circuit board 22 measures the liquid level of cargo in a cabin, a floating ball synchronously changes along with the liquid level, floating ball magnetic steel 44 controls the on-off of a magnetic sensor on a flexible circuit board, so that resistance on the flexible circuit board linearly changes, a transmitter converts the change of the resistance into a 4-20mA standard current signal or a digital signal to be output, the pressure synchronously measured by a pressure sensor 11 is the pressure in the cargo cabin, the 4-20mA standard current signal is output, the multipoint temperature synchronously measured by three temperature sensors 23 is the temperature of the cargo or air in the cabin, the 4-20mA standard current signal or a Pt100 resistance value signal is output, and therefore the liquid level, the pressure and the temperature of the cargo loaded in the cabin are synchronously measured and the signals are output.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.
Claims (6)
1. A multi-parameter level sensor comprising a housing (1), characterized in that: the lower surface of casing (1) is provided with measures guide bar subassembly (2), the surface of measuring guide bar subassembly (2) is provided with buffer unit (3) and floater structure (4) respectively, the lower fixed surface of measuring guide bar subassembly (2) is connected with mounting flange (5).
2. A multiparameter liquid level sensor according to claim 1, characterized in that: the pressure sensor (11) is arranged in the shell (1), the right side face of the inner wall of the shell (1) is communicated with the left side face of the electrical interface flange (13), an outlet stuffing box (12) is arranged in the electrical interface flange (13), and a connecting flange (14) is fixedly connected to the lower surface of the shell (1).
3. A multiparameter liquid level sensor according to claim 1, characterized in that: the measuring guide rod component (2) comprises a hollow guide rod (21), a liquid level sensor circuit board (22) is arranged in the hollow guide rod (21), three temperature sensors (23) are respectively arranged on the front side of the liquid level sensor circuit board (22), and two fixing parts (24) are respectively clamped on the outer surface of the hollow guide rod (21).
4. A multiparameter liquid level sensor according to claim 3, characterized in that: the liquid level sensor circuit board (22) comprises a non-magnetic metal plate, the upper surface of the non-magnetic metal plate is fixedly connected with the lower surface of the flexible circuit board through a high-temperature double-sided adhesive tape, the upper surface of the flexible circuit board is provided with a plurality of magnetic sensors and resistors, and the plurality of resistors, the plurality of magnetic sensors, the non-magnetic metal plate, the high-temperature double-sided adhesive tape and the flexible circuit board are externally provided with the same insulating protective sleeve.
5. A multiparameter liquid level sensor according to claim 3, characterized in that: buffer unit (3) include two go-between (31), and buffer spring (32) fixed connection is passed through to the opposite face of two go-between (31), go-between (31) and buffer spring (32) all cup joint the surface at hollow guide arm (21).
6. A multiparameter liquid level sensor according to claim 3, characterized in that: floater structure (4) include two semi-floater (41), two the opposite face fixed connection of semi-floater (41), rod (42) in the ball has been cup jointed in semi-floater (41), two rod (42) in the ball all cup joints outside hollow guide rod (21), the below rod (42) in the ball is provided with axle retainer ring (43) outward, axle retainer ring (43) are provided with magnet steel (44) outward, the top counterweight hole (45) have been seted up to the upper surface of semi-floater (41), the below the right flank of rod (42) in the ball is provided with two centre gripping bolts (46).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020784541.9U CN212300532U (en) | 2020-05-13 | 2020-05-13 | Multi-parameter liquid level sensor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020784541.9U CN212300532U (en) | 2020-05-13 | 2020-05-13 | Multi-parameter liquid level sensor |
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| CN212300532U true CN212300532U (en) | 2021-01-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117780334A (en) * | 2024-02-27 | 2024-03-29 | 西南石油大学 | Drilling fluid level measuring device and measuring method |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117780334A (en) * | 2024-02-27 | 2024-03-29 | 西南石油大学 | Drilling fluid level measuring device and measuring method |
| CN117780334B (en) * | 2024-02-27 | 2024-05-03 | 西南石油大学 | Drilling fluid level measuring device and measuring method |
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