CN201122108Y - Explosion-proof magnetic floater liquid level gauge - Google Patents

Abstract

The utility model discloses an explosion-prevention magnetic-float liquid level meter, which consists of a connecting pipe subassembly, an aeronautic plug, a pouring sealed tie-in subassembly, a connecting flange, a deflection tube subassembly, a float subassembly, a flexible circuit board subassembly, a panel subassembly, a circuit board, a shell body, and a HART communication board. The flexible circuit board subassembly is screwed on a tail connecting piece after being inserted into a tail connecting sleeve by a protective pipe and being positioned by a pin; after being encased into the deflection tube subassembly, the flexible circuit board subassembly is and screwed tightly and sealed by a pipe plug; leading-out leads are respectively welded on wiring terminals of the pouring sealed tie-in subassembly; the pouring sealed tie-in subassembly is fixed in the connecting pipe subassembly, and is inserted with the aeronautic plug and connected with the wiring terminals; the shell body is screwed on the connecting pipe subassembly, the HART intelligent board is fixed in the shell body after being fixedly connected on an underplate, the panel subassembly for installing the circuit board is fixed on the underplate, the leads are connected with the circuit board and the aeronautic plug, the float subassembly is assembled with the flange after being reeved from the bottom of the deflection tube subassembly, a baffle is screwed on the tail of the deflection tube subassembly after being fixedly connected on a counterbalancing subassembly, so the explosion-prevention magnetic-float liquid level meter is formed. The explosion-prevention magnetic-float liquid level meter has the advantages of large liquid level measurement scope, strong measuring function, wide liquid level measurement, long-distance transmission, adaptability to intelligent measurement and control, and convenient popularization.

Description

A kind of explosion-proof magnetic float liquidlevel meter

Affiliated technical field

The utility model relates to level gauging instrument technical field in the level meter, specifically, relates to a kind of explosion-proof magnetic float liquidlevel meter.

Background technology

In the level meter technical field, the instrument of liquid level is called as liquid level gauge in the measuring vessel, the kind of liquid level gauge has a variety of, wherein explosion-proof magnetic float liquidlevel meter is to use more widely, explosion-proof magnetic float liquidlevel meter is a kind of gauge tap of controlling liquid level in the container, its principle of work is after liquid level in the container changes, the float of the explosion-proof magnetic float liquidlevel meter of installing on the container fluctuates along with the variation of liquid level, float is rigidly connected to gauge tap by a connecting rod, the height distance change in location that float utilizes liquid buoyancy to produce, make the connecting rod reciprocating action that links to each other with float come the closure of gauge tap, reach the purpose of controlling liquid level in the container.The shortcoming of the explosion-proof magnetic float liquidlevel meter of tradition is: because be that float and switch are for being rigidly connected, make little, the function singleness particularly of measurement range, do not possess wide range level gauging and transmission at a distance, especially can not adapt to modern intelligent measuring control, how to overcome these shortcomings of the explosion-proof magnetic float liquidlevel meter of above-mentioned tradition, make it to possess wide range level gauging and transmission at a distance, thereby adapting to modern intelligent measuring control, then is the task that current in the art urgent need solves.

Summary of the invention:

The purpose of this utility model provides that a kind of level gauging scope is big, measurement function is powerful, and possesses wide range level gauging and transmission at a distance, can adapt to the explosion-proof magnetic float liquidlevel meter of intelligent measuring control.

In order to achieve the above object, the utility model adopts following structural principle: a kind of explosion-proof magnetic float liquidlevel meter, by sealing gasket, the connecting pipe assembly, aviation plug, fixed head, water the sealing joint assembly, joint flange, pillar, protecting pipe, the guide pipe assembly, float assembly, the flexible circuitry board component, balance weight assembly, the afterbody web member, the afterbody adapter sleeve, baffle plate, panel assembly, wiring board, housing, base plate, compositions such as HART intelligent plate, be characterized in: after earlier the flexible circuitry board component being penetrated pillar and being fixed on the afterbody web member with pin, penetrate on the afterbody adapter sleeve with attachment screw, again with being rotatably connected on the afterbody web member behind the pin location, with the flexible circuitry board component that has assembled the guide pipe assembly of packing into, screw the sealing of guide pipe assembly termination with plug; Be welded in the lead of drawing in the flexible circuitry board component on respective terminal that waters the sealing joint assembly respectively by the line look, the other end that the sealing joint assembly is rotatably connected in the guide pipe assembly will be watered, and be fixed in the connecting pipe assembly, aviation plug inserts in the connecting pipe assembly and the electric wire connection is watered on respective terminal of sealing joint assembly; Housing is rotatably connected on the connecting pipe assembly, after being fixed in HART intelligent plate screw on the base plate base plate is fixed in the housing, panel assembly is fixed on the base plate by pillar, wiring board is installed on the panel assembly, is plugged in by the lead on the HART intelligent plate on the respective terminal of wiring board and is communicated with aviation plug; Flange lower sub and flange top connection screwed by sealing gasket respectively be connected on the flange, float assembly is penetrated by guide pipe assembly bottom, after being fixed in baffle plate on the balance weight assembly at last, again balance weight assembly is rotatably connected in guide pipe assembly afterbody, constitutes explosion-proof magnetic float liquidlevel meter.

Above-mentioned described flexible circuitry board component is to be welded on the thick single face epoxy copper clad plate of 0.2mm-0.8 and to constitute by equally spaced the arrangement apart from rule with precision chip resistor and tongue tube.

The model of above-mentioned described HART intelligent plate is 3051 super HART intelligent plates.

Worker's structural principle of the present utility model is; adopt the thick single face epoxy copper clad plate of 0.5mm to be equipped with rationally distributed board design; again with precision chip resistor and the rational tongue tube of pin design by being that set a distance clocklike welds and constituted the flexible circuitry board component; utilize mechanical parts such as pillar and corrugated tube that flexible circuit board is protected simultaneously; make liquid level gauge realize to coil putting; measurement range is wide; inner components and parts are not fragile; in the tongue tube pin, added the damping design and be welded in back on the flexible circuit board because wiring board axially reaches the bent damage that causes to bending effectively to prevent tongue tube; what the sealing of guide pipe bottom was adopted is the form that attachment screw adds plug; the afterbody web member; the afterbody adapter sleeve; the use of uniting of attachment screw has effectively solved flexible circuit board and pillar has been drawn to the problem of guide pipe bottom; thereby utilize plug and taper pipe thread to cooperate the structure of sealing can prevent the damage that the pressure in the storage tank causes instrument again, thereby and another design advantage is that its integrally-built mobility can remedy because the error that tank body is measured is installed to instrument and the loss that brings to measuring accuracy.

Because the on-the-spot environment for use of the utility model badly mostly is inflammable, explosive and high temperature, high pressure place and the utility model belong to the elongate rod type, gauge internal very easily produces pressure wave when wiring board is short-circuited in case take place to leak, precompressed after light and will blast if meet induction gas this moment, so having considered this point fully, the utility model increased the design of watering the sealing joint assembly, even the portion in contact with the electrolyte and the circuit part of instrument are effectively isolated owing to pressure leakage produces pressure wave owing to the effect of watering the sealing joint assembly can not blasted yet; Having quoted 3051 super HART intelligent plates in addition in line design makes the utlity model has possess the HART communication function again on the basis that can realize 4～20mA analog current signal output function, the audio digital signals that can superpose on 4～20mA of low frequency analog current signal carries out the bi-directional digital communication and can not influence the size that sends the control system simulating signal to, guaranteed compatibility with existing simulation system, thereby increased the function of teletransmission digital communication, make the utility model promptly can insert the scattered control system system, can form complete field bus control system by bus communication again, it is big to have the level gauging scope, measurement function is powerful, but wide range level gauging and remote the transmission can adapt to the characteristics of intelligent measuring and control.

Description of drawings:

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the partial cutaway diagrammatic sketch of Fig. 1

Fig. 3 is the utility model flexible circuit board synoptic diagram;

Embodiment

By Fig. 1 to Fig. 3 structure of the present utility model as can be seen, a kind of explosion-proof magnetic float liquidlevel meter, be by sealing gasket 1, connecting pipe assembly 2, sealing gasket 3, aviation plug 4, fixed head 5, water sealing joint assembly 6, flange top connection 7, packing ring 8, sealing gasket 9, O-ring seal 10, flange 11, flange lower sub 12, pillar 13, protecting pipe 14, guide pipe assembly 15, float assembly 16, flexible circuitry board component 17, balance weight assembly 18, pin 19, afterbody web member 20, afterbody adapter sleeve 21, attachment screw 22, plug 23, baffle plate 24, pillar 25, panel assembly 26, wiring board 27, housing 28, base plate 29, HART intelligent plate 30, Deng composition, at first flexible circuitry board component 17 is penetrated pillar 13 usefulness pins 19 and be fixed on the afterbody web member 20; Then attachment screw 22 is penetrated on the afterbody adapter sleeve 21 with being rotatably connected in after the open cylinders finger setting on the afterbody web member 20, utilize frock to draw in the guide pipe assembly 15 of packing into the flexible circuitry board component 17 that has assembled, be tightened on the termination sealing of guide pipe assembly 15 with plug 23; Be welded in the lead of drawing in the flexible circuitry board component 17 on respective terminal that waters sealing joint assembly 6 respectively by the line look, the other end that sealing joint assembly 6 is rotatably connected in guide pipe assembly 15 will be watered, and be fixed in the connecting pipe assembly 2, connecting pipe assembly 2 is by sealing gasket 3 and vertebra shape connector formations that spin, and aviation plug 4 is fixed in the connecting pipe assembly 2 of packing on the fixed head 5 and the electric wires connections are watered on respective terminal of sealing joint assembly 6; Housing 28 is rotatably connected on the connecting pipe assembly 2 by sealed loop-pad 1, after being fixed in HART intelligent plate 30 screws on the base plate 29, two pieces of slotted countersunk flat head screws of base plate 29 usefulness are fixed in the housing 28, panel assembly 26 is fixed on the base plate 29 by pillar 25, wiring board 27 is installed on the panel assembly 26, is plugged in by the lead on the HART intelligent plate 30 on the respective terminal of wiring board 27 and is communicated with aviation plug 4; Flange lower sub 12 and flange top connection 7 screwed by sealing gasket 9 and O-ring seal 10, packing ring 8 respectively be connected on the flange 11, float assembly 16 is penetrated by guide pipe assembly 15 bottoms then, after being fixed in baffle plate 24 on the balance weight assembly 18 at last, again balance weight assembly is rotatably connected in guide pipe assembly 15 afterbodys, outside the guide pipe assembly 15 protecting pipe 14 is housed, thereby constitutes explosion-proof magnetic float liquidlevel meter.

Claims (3)

1. explosion-proof magnetic float liquidlevel meter, by sealing gasket, the connecting pipe assembly, aviation plug, fixed head, water the sealing joint assembly, joint flange, pillar, protecting pipe, the guide pipe assembly, float assembly, the flexible circuitry board component, balance weight assembly, the afterbody web member, the afterbody adapter sleeve, baffle plate, panel assembly, wiring board, housing, base plate, compositions such as HART communication board, it is characterized in that: earlier flexible circuitry board component (17) is penetrated pillar (13) and be fixed in after afterbody web member (20) goes up with pin, penetrate on the afterbody adapter sleeve (21) with attachment screw, again with being rotatably connected on the afterbody web member (20) behind the pin location, with the flexible circuitry board component (17) that has assembled the guide pipe assembly (15) of packing into, screw the sealing of guide pipe assembly (15) termination with plug (23); Be welded in the lead of drawing in the flexible circuitry board component (17) on respective terminal that waters sealing joint assembly (6) respectively by the line look, to water the other end that sealing joint assembly (6) is rotatably connected in guide pipe assembly (15), and be fixed in the connecting pipe assembly (2), aviation plug (4) inserts in the connecting pipe assembly (2) and the electric wire connection is watered on respective terminal of sealing joint assembly (6); Housing (28) is rotatably connected on the connecting pipe assembly (2), after being fixed in HART intelligent plate (30) screw on the base plate (29) base plate (29) is fixed in the housing (28), panel assembly (26) is fixed on the base plate (29) by pillar (25), panel assembly (26) go up to be installed wiring board (27), is plugged in by the lead on the HART intelligent plate (30) on the respective terminal of wiring board (27) to be communicated with aviation plug (4); Flange lower sub (12) and flange top connection (7) screwed by sealing gasket respectively be connected on the flange (11), float assembly (16) is penetrated by guide pipe assembly (15) bottom then, after at last baffle plate (24) being fixed on the balance weight assembly (18), again balance weight assembly (18) is rotatably connected in guide pipe assembly (15) afterbody, constitutes explosion-proof magnetic float liquidlevel meter.

2. explosion-proof magnetic float liquidlevel meter according to claim 1 is characterized in that: described flexible circuitry board component (17) is to be welded on the thick single face epoxy copper clad plate of 0.2mm-0.8 and to constitute by equally spaced the arrangement apart from rule with precision chip resistor and tongue tube.

3. explosion-proof magnetic float liquidlevel meter according to claim 1 is characterized in that: the model of described HART intelligent plate (30) plate is 3051 super HART intelligent plates.

Images