CN209216885U - Tongue tube liquid level relay - Google Patents

Abstract

The utility model discloses a kind of tongue tube liquid level relay, it has the function of floating ball total travel continuous alarm and low low liquid level warning, no wrong report, is not influenced by external complex working environment is multiple, and output stablizes, accurate signal.It includes upper and lower ring washer, circuit board, slip pipe, floating ball, protective cover and tongue tube, floating ball is sleeved on slip pipe, ring washer is housed up and down, the circuit board for being welded with tongue tube above is mounted in slip pipe, slip pipe is welded under protective cover flange, it is fixed below with protective cover, protective cover is mounted in oil tank of transformer, along the longitudinal direction of slip pipe, step arrangement welds on circuit boards four tongue tubes from high to low, three tongue tube parallel connections above, the signal of generation leads to the A of connecting terminal using conducting wire, the end B, a tongue tube is welded on the bottom of circuit board below, the independent lead of the signal of generation to connecting terminal C, the end D, silica gel is marked in slip pipe.The utility model is especially suitable for installation in the oil immersed type transformation of the above electric locomotive of speed per hour 200km.

Description

Tongue tube liquid level relay

Technical field:

The utility model relates to control panel technical fields, and exactly, it is that one kind is mounted on speed per hour 200km to power on Tongue tube liquid level relay on power locomotive transformer.

Background technique:

Relay be switched on or switched off according to certain input signal Small current control circuit, realize far distance control from Dynamic control electric appliance.Its input signal can be the electricity such as electric current, voltage, be also possible to the non-electrical such as temperature, time, speed, pressure Amount, and what is exported is then the movement of contact or the variation of circuit parameter, and liquid level relay is then a kind of according to liquid level height The relay of low output electric signal.

Currently, using tongue tube Floating Ball Liquid Level relay in the oil immersed type transformation of the above electric locomotive of speed per hour 200km As monitoring transformer Cooling oil liquid position variation control panel, this relay mainly by a tongue tube, slip pipe, floating ball, Upper and lower retaining ring and protective cover are constituted, and slip pipe is mounted in protective cover, and tongue tube is mounted in slip pipe, and floating ball is sleeved on outside slip pipe Face, upper and lower position are limited with retaining ring, and cooling oil can enter protective cover from fuel feed hole, cover cooling oil in interior liquid level and transformer Face is consistent, and floating ball declines therewith when cooling oil liquid level declines in transformer, and vice versa.When floating ball drops to setting alert locations When, floating ball internal magnet attracts magnetic reed switch normally opened contact closure in tongue tube, electric signal is issued, as Liquid level or prompt letter Number.It finds in use, this liquid level relay causes dry-reed tube switch movement excessively clever since floating ball stroke is too short It is quick, easily generate the problems such as misrepresenting deliberately liquid level signal；In addition shadow of this liquid level relay also vulnerable to external environments such as vibration, inclinations It rings, generates malfunction.It is light then, cause to mislead to operator；It is heavy then, influence the normal operation of electric locomotive or cause driving thing Therefore.

Utility model content:

The purpose of this utility model is exactly to solve existing tongue tube liquid level relay existing defects and deficiency, provides a kind of nothing It reports by mistake, not by external environment image, the tongue tube liquid level relay of simultaneously repetition of alarms can be continued within the scope of floating ball total travel.

The purpose of this utility model is achieved in that tongue tube liquid level relay includes: upper and lower ring washer, circuit board, cunning Pipe, floating ball, protective cover, protective cover flange and tongue tube, floating ball are sleeved on slip pipe, are respectively provided with ring washer and lower gear up and down Circle, floating ball can slide up and down between upper and lower retaining ring, and the circuit board for being welded with tongue tube above is mounted in slip pipe, on slip pipe End is welded on the centre bore lower surface of protective cover flange, and lower end is secured with nuts on protective cover, and protective cover utilizes protective cover Flange and transformer case are mounted in oil tank of transformer, and transformer Cooling oily can be entered in protective cover by fuel feed hole, are done Reed pipe signal is drawn with conducting wire, it is characterised in that: along the longitudinal direction of slip pipe, step arrangement is welded on electricity to four tongue tubes from high to low On the plate of road, first tongue tube, second tongue tube, third branch tongue tube are in parallel, and the signal of generation is led to using conducting wire to be connect The end A, B of line terminals, below a tongue tube be welded on the bottom of circuit board, the independent lead of the signal of generation to connecting terminal The end C, D, be marked with silica gel in slip pipe, above height difference H between three tongue tubes be 4 millimeters to 6 millimeters, third branch tongue tube Difference in height L to most next tongue tube is 2 millimeters to 4 millimeters, from initial alarm liquid level position to low liquid level alert locations Distance be at least 10 millimeters.

Compared with prior art, the utility model has the advantages that: using several tongue tubes in parallel along slip pipe it is longitudinal by High to low step arrangement mode and the setting of low low liquid level tongue tube, realize floating ball total travel continuous alarm and low low liquid level report Alert function, to thoroughly solve because the dry-reed tube switch caused by floating ball stroke is too short acts excessively sensitive, frequent generation mistake The problem of report.In addition, after silica gel is perfused in slip pipe due to the utility model, between tongue tube, circuit board and slip pipe inner wall not It is better that relative motion, insulation performance are generated again, so, the utility model is protected in the case where external operating environment complexity The stabilization of output signal and accurate is demonstrate,proved.

Detailed description of the invention:

Fig. 1 is the assembly relation schematic diagram of the utility model.

Fig. 2 is the main view of the utility model.

Fig. 3 is the revolved sectional view at the utility model E-E.

Fig. 4 is the rearview of the utility model.

Fig. 5 is the electric principle and height distribution map of the utility model.

Specific embodiment

Embodiment 1:

Components used in the utility model are the prior art, and installation method is also same as the prior art, it is therefore easy to It realizes, details are not described herein；Part structure size such as individual zero needs to change, and can use existing manufacture material, technique system Make.

The utility model is four dry-reed liquid level relays, can according to actual needs really in different applications Determine the stroke of floating ball 7, then determine the number of tongue tube by the length of stroke, connection type is constant, it may be assumed that circuit board 5 is mounted on In slip pipe 6, N branch tongue tube is welded on circuit board 5 along the longitudinal step arrangement from high to low of slip pipe 6, from top to bottom N-1 branch tongue tube Parallel connection, signal lead to the end A, B of connecting terminal 11 using conducting wire, the bottom that most next tongue tube is welded on circuit board 5, The independent lead of the signal of generation to the end C, D of connecting terminal 11, above height difference H between N-1 branch tongue tube be 4 millimeters to 6 Millimeter, the difference in height L of the adjacent tongue tube in the most next supreme face of tongue tube are 2 millimeters to 4 millimeters；It can add if necessary The length of big protective cover 9 and slip pipe 6.Above-mentioned difference in height is to realizing that the utility model is important, and experiment obtains repeatedly.

Firstly, the height and position of first tongue tube 13 should be determined in strict accordance with the initial alarm liquid level position of setting, so Successively its excess-three branch reed pipe is welded on circuit board 5 afterwards, corresponding solder joint draws sufficient length with conducting wire, and circuit board 5 is packed into After slip pipe 6, silica gel 1 is perfused into slip pipe 6 in a manner of vibration, until being full of silica gel 1 in slip pipe 6；Mode of vibration injecting glue can be with Guarantee in slip pipe 6 silica gel uniformly, bubble-free, preferably to fix tongue tube and to guarantee its insulating properties.

Floating ball 7, which is sleeved on, to install circuit board 5 and has been filled on the slip pipe 6 of silica gel 1, and floating ball 7 is upper ring washer 8 respectively up and down With lower ring washer 2, floating ball 7 can slide up and down between upper and lower retaining ring 8 and 2, and 6 upper end of slip pipe is welded on protective cover flange 12 On centre bore lower surface, lower end nut 3 is fixed on protective cover 9, and protective cover 9 utilizes protective cover flange 12 and transformer case 10 are mounted in oil tank of transformer.Cooling oil can be entered in protective cover by fuel feed hole 4, be covered in interior liquid level and oil tank of transformer Cooling oil liquid level is consistent, and floating ball declines therewith when cooling oil liquid level declines in oil tank of transformer, and vice versa.First in slip pipe 6 13, second tongue tubes 14 of branch tongue tube, third branch tongue tube 15, a following tongue tube 16 are normally opened contact, in fuel tank In the case where full oil, floating ball 7 is risen at retaining ring 8, and tongue tube normally opened contact is still opening.When the liquid level decline in fuel tank When, floating ball 7 declines therewith, and when liquid level drops to the initial alert locations of setting, the magnet in floating ball 7 triggers the first branch spring Normally opened contact closure in pipe 13, generates electric signal and is output to the end A, B of connecting terminal 11, as Liquid level or prompt, Alarm signal.If liquid level continues to decline, floating ball 7 can successively trigger second tongue tube 14 and third branch during declining therewith Normally opened contact closure in reed pipe 15, due to successively first tongue tube 13 of step arrangement, the second branch from high to low above Reed pipe 14, is connected in parallel at third branch tongue tube 15, so it is defeated just to produce stable, true, the lasting signal of total travel Out.When liquid level is down to low low oil level, since the lower part of third branch tongue tube 15 and the top of a following tongue tube 16 are portions Divide coincidence, so, floating ball 7 triggers 15 normally opened contact of third branch tongue tube closure and while not disconnecting, will trigger down Face one 16 normally opened contact of tongue tube closure, below second of electric signal generating of a tongue tube 16 exported by conducting wire to wiring The end C, D of terminal 11 is taken corresponding treatment measures for operator or is jumped main disconnected.From initial alarm liquid level position to low liquid The distance of position is at least 10mm.

It is to be especially suitable for installation mounted in speed per hour 200km to power on transformer that the utility model, which can install various oil immersions, In the oil immersed type transformation of power locomotive.

Claims (4)

1. tongue tube liquid level relay, it include: lower ring washer (2), circuit board (5), slip pipe (6), floating ball (7), upper ring washer (8), Protective cover (9), protective cover flange (12) and tongue tube, floating ball (7) are sleeved on slip pipe (6), are respectively provided with ring washer (8) up and down With lower ring washer (2), floating ball (7) can slide up and down between upper ring washer (8) and lower ring washer (2), be welded with the electricity of tongue tube above Road plate (5) is mounted in slip pipe (6), and slip pipe (6) upper end is welded on the centre bore lower surface of protective cover flange (12), and lower end is used Nut (3) is fixed on protective cover (9), and protective cover (9) is mounted on change using protective cover flange (12) and transformer case (10) In depressor fuel tank, transformer Cooling oil can be entered in protective cover by fuel feed hole (4), and reed switch signal is drawn with conducting wire, It is characterized in that: first tongue tube (13), second tongue tube (14), third branch tongue tube (15), a following tongue tube (16) and along the longitudinal direction of slip pipe (6) step arrangement is welded on circuit board (5) from high to low, above first tongue tube (13), Second tongue tube (14), third branch tongue tube (15) are in parallel, and the signal of generation leads to connecting terminal (11) using conducting wire A, the end B, below a tongue tube (16) be welded on the bottoms of circuit board (5), the independent lead of the signal of generation to connecting terminal (11) the end C, D, above height difference H between three tongue tubes be 4 millimeters to 6 millimeters.

2. tongue tube liquid level relay according to claim 1, it is characterised in that: third branch tongue tube (15) to following one The difference in height L of branch tongue tube (16) is 2~4 millimeters.

3. tongue tube liquid level relay according to claim 1, it is characterised in that: from initial alarm liquid level position to low The distance of liquid level alert locations is at least 10 millimeters.

4. tongue tube liquid level relay according to claim 1, it is characterised in that: be marked with silica gel (1) in slip pipe (6).