CN218584155U

CN218584155U - Magnetostrictive liquid level meter

Info

Publication number: CN218584155U
Application number: CN202222598222.0U
Authority: CN
Inventors: 周扬; 周亚辉; 刁玲
Original assignee: Henan Xuxing New Energy Technology Co ltd
Current assignee: Henan Xuxing New Energy Technology Co ltd
Priority date: 2022-09-28
Filing date: 2022-09-28
Publication date: 2023-03-07
Anticipated expiration: 2032-09-28

Abstract

The utility model relates to a level gauge technical field discloses a magnetostrictive liquid level gauge, including probe rod, float and electron storehouse, its characterized in that: the probe rod comprises an outer pipe and an inner rod, the inner rod is of a U-shaped long groove structure, the electronic bin comprises a base flange and an inner support frame, the outer pipe is connected with the base flange, the inner rod is connected with the inner support frame, the inner support frame is connected with the base flange, a coil fixing frame and a circuit board are arranged on the inner support frame, one end of a waveguide fiber is connected with the circuit board through the coil fixing frame, the other end of the waveguide fiber extends to the other end of the inner rod along the U-shaped long groove of the inner rod, is connected with an elastic supporting mechanism of the waveguide fiber, and is connected with the circuit board through an insulation return wire. The liquid level gauge is simple in structure and convenient to assemble, damage to the waveguide wire in the installation process is avoided, the dead zone of the probe rod is short, the effective use length is long, and compared with a traditional magnetostrictive liquid level gauge, the size of the dead zone can be reduced to 30-40mm, and the reduction dead zone is reduced by 60-70%.

Description

Magnetostrictive liquid level meter

Technical Field

The utility model relates to a level gauge technical field especially relates to a magnetostrictive liquid level meter.

Background

The magnetostrictive liquid level meter is a measuring instrument which can carry out continuous liquid level and interface measurement and provides extremely high precision of analog signal output for monitoring and control, and mainly comprises three parts: the outer pipe part is made of a product material which is corrosion-resistant and resistant to industrial severe environment; the core part is a waveguide tube with an innermost core and is composed of certain magnetostrictive substances; the electronic part generates a low current interrogation pulse which simultaneously generates a magnetic field and propagates down the waveguide, and by accurately measuring the time interval between the interrogation pulse and the return pulse, a high precision and high repeatability of the level value is obtained. The device is widely applied to liquid level industrial metering and control of various liquid tanks such as petroleum, chemical raw material storage, industrial process, biochemistry, medicine, food and beverage, tank area management, underground inventory of gas stations and the like, dam water level, reservoir water level monitoring, sewage treatment and the like.

The existing magnetostrictive liquid level meter is influenced by a design structure and a circuit signal, and a common problem is that a coil is arranged close to a metal rod, the length of a dead zone of a magnetostrictive sensor is long, the dead zone is about 100mm generally, and the effective use length of a probe rod is influenced, see patent document with publication number of CN209783704U, the structure of the coil sensor is too complex, a waveguide wire and a hose are directly arranged in a cylindrical probe rod in a penetrating manner, the operation and the installation are very inconvenient, the efficiency is low, and the waveguide wire is easy to damage.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a magnetostrictive liquid level meter has simple structure, simple to operate's characteristics to in avoiding the installation, cause the damage to the waveguide silk.

The utility model discloses a realize through following technical scheme:

a magnetostrictive liquid level meter comprises a probe rod, a floater and an electronic bin, wherein the probe rod comprises an outer pipe and an inner rod, the inner rod is of a U-shaped long groove structure, the electronic bin comprises a base flange and an inner support frame, the outer pipe is connected with the base flange, the inner rod is connected with the inner support frame, the inner support frame is connected with the base flange, a coil fixing frame and a circuit board are arranged on the inner support frame, one end of a waveguide fiber is connected with the circuit board through the coil fixing frame, the other end of the waveguide fiber extends to the other end of the inner rod along the U-shaped long groove of the inner rod, is connected with an elastic supporting mechanism of the waveguide fiber, and is connected with the circuit board through an insulating return wire.

The elastic supporting mechanism comprises a spring support, a spring and a waveguide wire supporting head, the spring and the waveguide wire supporting head are arranged in the spring support, the waveguide wire sequentially penetrates through the spring support, the spring and the waveguide wire supporting head, and the waveguide wire is provided with a rivet, so that the waveguide wire supporting head presses the spring in the spring support, and the waveguide wire is tensioned and straightened.

The U-shaped long groove of the inner rod is internally provided with a supporting block, the inner rod preferably adopts an aluminum alloy groove, and the supporting block preferably adopts an insulated silica gel part.

The inner rod is provided with a temperature sensor, such as a temperature plate, a probe and the like, and is connected with the circuit board through a lead so as to monitor the liquid temperature of the application environment.

The electronic bin also comprises a bin cylinder and a top seat flange, wherein the bin cylinder is hermetically connected with the base flange and the top seat flange. The flange plate comprises a threaded connection part and a sealing ring clamping groove part, and is matched with the sealing ring through threaded connection, so that the reliable sealing performance between the flange plate and the bin can be effectively guaranteed, sealant and resin can be matched for sealing and filling, the good sealing performance of the electronic bin is improved, and the liquid level meter can work in a liquid environment for a long time.

Be provided with a plurality of fixed stitches on the coil mount, the coil mount passes through on the fixed stitch is fixed in the circuit board, simultaneously, fixed stitch is connected with coil lead wire, waveguide silk as the terminal again, and a stitch is dual-purpose, simple structure and connection reliable and stable, reduce the fault point.

The inner support frame comprises a base portion and a U-shaped frame portion.

The base portion center has first centre bore, and first centre bore includes round hole section and square hole section, base portion one side corresponds the square hole section and is provided with the screw hole, and the screw hole extends to the square hole section by base portion one side.

And the circuit board is provided with a filtering and amplifying information processing circuit.

The circuit board comprises a first circuit board and a second circuit board, and the two circuit boards are connected with the socket through corresponding matched contact pins.

The magnetostrictive liquid level meter adopts the inner rod of a U-shaped long groove structure to be connected with an inner support frame of an electronic bin, a base flange of the electronic bin is connected with an outer pipe to form an inner and outer sleeved structure, the inner rod can adopt an aluminum alloy long groove, the magnetostrictive liquid level meter is light and strong in strength, the waveguide fiber is fixedly installed through the inner rod of the long groove structure, the magnetostrictive liquid level meter is convenient to install and stable in structure, meanwhile, the waveguide fiber is conveniently supported and fixed in a groove, the stability of the waveguide fiber is further improved, the waveguide fiber is supported, fixed and safely protected by the inner rod of the long groove, the magnetostrictive liquid level meter is convenient to enter and install into the outer pipe, the outer pipe is convenient to install and seal, one end of the outer pipe can be sealed in a blocking mode, the other end of the outer pipe is welded and sealed with a base flange of the electronic bin, and then the outer pipe is matched with a bin barrel and a top seat flange of the electronic bin to form a tight sealed shell structure, and the protection level can reach the IP67 level.

By adopting the base flange plate and the inner support frame and fixing the coil on the inner support frame through the circuit board, the distance between the coil and the metal rod is increased, meanwhile, the circuit board provided with the filtering and amplifying information processing circuit is adopted, clutter can be effectively filtered, the anti-interference capability of the probe is enhanced, the signal is strong, the probe is more stable and reliable, the sensitivity and the accuracy of a waveguide wire are improved, the blind area is reduced, the effective use length of the probe rod is increased, and compared with a traditional magnetostrictive liquid level meter, the size of the blind area can be reduced to 30-40mm, and the effective use length of the probe rod is increased by 60-70mm.

The utility model discloses simple structure, the equipment is convenient, and production efficiency is high, low in production cost, and the effective length of probe rod is big, and the practicality is strong, excellent in use effect, is worth extensively using widely.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic view of a portion A of FIG. 1;

FIG. 3 is a schematic view of a spring support;

FIG. 4 is a schematic cross-sectional view of FIG. 3;

FIG. 5 is a schematic diagram of the right side view of FIG. 3;

FIG. 6 is a schematic view of a portion of the enlarged structure at B in FIG. 1;

FIG. 7 is a schematic illustration showing a disassembled structure of an electronic magazine according to an embodiment of the present disclosure;

FIG. 8 is a schematic diagram of a flange plate of the electronic device in the embodiment;

FIG. 9 is a schematic diagram of a flange of a top seat of the electronic device in the embodiment;

fig. 10 is a schematic structural view of an inner support frame of the electronic cabin in the embodiment;

fig. 11 is a schematic cross-sectional view of fig. 10.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-11, a magnetostrictive liquid level meter includes a probe rod 1, a float 2 and an electronic cabin 3, the probe rod 1 includes an outer tube 11 and an inner rod 12, the inner rod 12 is a U-shaped elongated slot structure, the electronic cabin 3 includes a base flange 31 and an inner support frame 32, the outer tube 11 is connected with the base flange 31, the inner rod 12 is connected with the inner support frame 32, the inner support frame 32 is connected with the base flange 31, the inner support frame 32 is provided with a coil fixing frame 321 and a circuit board 322, one end of a waveguide fiber 4 is connected with the circuit board 322 through the coil fixing frame 321, and the other end of the waveguide fiber extends to the other end of the inner rod 12 along the U-shaped elongated slot of the inner rod 12 and is connected with an elastic supporting mechanism 5 of the waveguide fiber, and is connected with the circuit board 322 through an insulation loop.

The elastic support mechanism 5 comprises a spring support 51, a spring 52 and a waveguide wire support head 53 which are arranged in the spring support 51, the waveguide wire 4 sequentially penetrates through the spring support 51, the spring 52 and the waveguide wire support head 53, a rivet 54 is arranged on the waveguide wire 4, the waveguide wire support head 53 presses the spring 52 in the spring support 51 to realize that the waveguide wire 4 is tensioned and straightened, the spring support 51 comprises a spring groove 511 and a connecting part 512, the connecting part 512 is a square structure correspondingly matched with a U-shaped long groove of the inner rod 12, one surface corresponding to the opening side of the U-shaped long groove is an arc-shaped structure, and a convex edge structure 513 is arranged at the end part of the connecting part 512, so that the connecting part 512 of the spring support 51 is arranged behind the U-shaped long groove of the inner rod 12, and the connecting part 512 is deformed by pressing and bending deformation to tightly hold the connecting part 512, and the connecting part 51 can realize the connecting and fixing of the spring support 51 and the inner rod 12. The side wall of the spring groove 511 is provided with an axial long hole sliding groove 514 corresponding to the waveguide wire support head 53, two sides of the waveguide wire support head 53 are provided with sliding blocks correspondingly matched with the sliding grooves 514, so that the waveguide wire support head 53 has a certain sliding floating space, the axis of the spring support 51 is of a hollow structure, the inner diameter of the spring groove 511 is larger than that of the connecting part 512, a silica gel damping part 55 matched and connected with the waveguide wire 4 is arranged in the axis corresponding to the connecting part 512, and the stability of the waveguide wire 4 is further improved. The U-shaped long groove of the inner rod 12 is internally provided with a supporting block 13, the inner rod 12 preferably adopts an aluminum alloy groove, and the supporting block 13 preferably adopts an insulated silica gel piece.

The inner rod 12 is provided with a temperature sensor 14, in this embodiment, a temperature plate is used as an example, and the temperature sensor 14 is connected to the circuit board 322 through a wire to monitor the liquid temperature of the application environment.

Electronic compartment 3 still includes storehouse section of thick bamboo 33 and footstock ring flange 34, storehouse section of thick bamboo 33 and the equal sealing connection of base ring flange 31 and footstock ring flange 34,

ring flange

31, 34 all includes threaded

connection portion

311, 341 and sealing washer draw-in

groove portion

312, 342, cooperate with the sealing washer through threaded connection, can effectively ensure

ring flange

31, 34 and the reliable leakproofness between storehouse section of thick bamboo 33, can also be equipped with sealing compound and the sealed packing of resin, improve the good leakproofness in electronic compartment, make the level gauge can work in liquid environment for a long time, in this embodiment, base ring flange 31 and outer tube 11 welded seal, footstock ring flange 34 carries out sealing connection through filling sealing resin 3431 with wire leading-out terminal 343, the shell protection level of this application can reach IP67 rank.

The inner support frame 32 comprises a base portion 323 and a U-shaped frame portion 324, the base portion 323 is provided with a first central hole 3231 in the center, the first central hole 3231 comprises a round hole section 32311 and a square hole section 32312, a threaded hole 3232 is formed in one side of the base portion 323 corresponding to the square hole section 32312, the threaded hole 3232 extends from one side of the base portion 323 to the square hole section 32312, and the inner rod 12 is inserted into the square hole section 32312 and is locked and fixed through a set screw in the threaded hole 3232. Laid circuit board fixed orifices 3241 on U-shaped frame portion 324, circuit board 322 includes first circuit board and second circuit board, is fixed in the both sides of U-shaped frame portion 324 respectively, is connected with the socket through corresponding complex contact pin between two circuit boards, be provided with filtering and amplify information processing circuit 3221 on the circuit board 322, this circuit has been in the detailed record in the circuit patent of the application on the same day, and this application is no longer repeated, carries out edulcoration and enlargies the reinforcing to the magnetic induction signal, improves the sensitive precision of signal strength and level gauge.

The coil fixing frame 321 is provided with a plurality of fixing pins 3211, the fixing pins 3211 penetrate through the coil fixing frame 321 and expose end heads, the coil fixing frame 321 is fixed on the circuit board 322 through the fixing pins 3211, and meanwhile, the fixing pins 3211 are used as binding posts and are respectively connected with the coil lead and the waveguide wire 4 correspondingly, so that one-pin dual-purpose is realized, the structure is simplified, the structure is simple, the connection is stable and reliable, and fault points are reduced.

The base flange 31 and the top flange 34 are provided with blind holes, so that when the flanges are mounted, the flanges can be fastened at two ends of the bin 33 by tightly grasping the corresponding blind holes with a tool. All connect sealed face all to seal with sealed glue, the magnetostrictive liquid level meter of this application adopts this ampere of circuit, and overall structure adopts explosion-proof design, and its structural process is simple, and sealing performance is good, and fail safe nature is good, and the shell protection level can reach the IP67 rank, can use in liquid environment for a long time.

Finally, it should be noted that: 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 variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the principles of the present invention.

Claims

1. The utility model provides a magnetostrictive liquid level meter, includes probe rod, float and electron storehouse which characterized in that: the probe rod comprises an outer tube and an inner rod, the inner rod is of a U-shaped long groove structure, the electronic cabin comprises a base flange plate and an inner support frame, the outer tube is connected with the base flange plate, the inner rod is connected with the inner support frame, the inner support frame is connected with the base flange plate, a coil fixing frame and a circuit board are arranged on the inner support frame, one end of the waveguide wire is connected with the circuit board through the coil fixing frame, the other end of the waveguide wire extends to the other end of the inner rod along the U-shaped long groove of the inner rod and is connected with the waveguide wire elastic supporting mechanism, and the other end of the waveguide wire is connected with the circuit board through an insulation return wire.

2. A magnetostrictive liquid level gauge according to claim 1, characterized in that: the elastic supporting mechanism comprises a spring support, a spring and a waveguide wire supporting head, the spring and the waveguide wire supporting head are arranged in the spring support, the waveguide wire sequentially penetrates through the spring support, the spring and the waveguide wire supporting head, and the waveguide wire is provided with a rivet, so that the waveguide wire supporting head presses the spring in the spring support, and the waveguide wire is tensioned and straightened.

3. A magnetostrictive liquid level gauge according to claim 1, characterized in that: and supporting blocks are distributed in the U-shaped long grooves of the inner rod.

4. A magnetostrictive liquid level gauge according to claim 1, characterized in that: and the inner rod is provided with a temperature sensor.

5. A magnetostrictive liquid level gauge according to claim 1, characterized in that: the electronic bin further comprises a bin barrel and a top seat flange, and the bin barrel is hermetically connected with the base flange and the top seat flange.

6. A magnetostrictive liquid level gauge according to claim 1, characterized in that: the coil fixing frame is provided with a plurality of fixing pins, the coil fixing frame is fixed on the circuit board through the fixing pins, and meanwhile, the fixing pins are connected with the coil lead wires and the waveguide wires as binding posts.

7. A magnetostrictive liquid level gauge according to claim 1, characterized in that: the inner support frame includes a base portion and a U-shaped frame portion.

8. A magnetostrictive liquid level gauge according to claim 7, characterized in that: the base portion center has first centre bore, and first centre bore includes round hole section and square hole section, base portion one side corresponds the square hole section and is provided with the screw hole, and the screw hole extends to the square hole section by base portion one side.

9. A magnetostrictive liquid level gauge according to claim 1, characterized in that: and the circuit board is provided with a filtering and amplifying information processing circuit.

10. A magnetostrictive liquid level gauge according to claim 1, characterized in that: the circuit board comprises a first circuit board and a second circuit board, and the two circuit boards are connected with the socket through corresponding matched contact pins.