CN2081527U

CN2081527U - Boiler water-level display device

Info

Publication number: CN2081527U
Application number: CN 90226568
Authority: CN
Inventors: 栗长祯
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-12-22
Filing date: 1990-12-22
Publication date: 1991-07-24

Abstract

The utility model belongs to a boiler water level display device, which is provided with a water level sensing pipeline 2 connected with a boiler 1, a magnetic float 3 which can float from top to bottom with water level is arranged in the pipeline, an electron water level bicolor luminous indicator 4 is arranged on the water level sensing pipeline, the luminous indicator is provided with a longitudinally arranged sliver-shaped outer shell along the water level sensing pipeline, a magnetic switch is fixedly arranged on the position corresponding to each water level displaying point of the water level sensing pipeline in the outer shell, and a bicolor luminous indicating circuit is arranged corresponding to each water level point.

Description

Boiler water-level display device

The utility model belongs to a kind of boiler water level display device, and it is red that it can carry out vapour, light green double-colored demonstration, and the steam boundary is clearly demarcated.

In prior art, two-colour fluviograph generally all adopts optical principle to make, belong to the optics instrument, it has intuitive display, advantage such as eye-catching, but because it directly contacts with carbonated drink in the boiler, so its display performance will be subjected to the influence of boiler water quality, in order to eliminate this influence, must often clean water level gauge in the use, per tour flushing is once at least, make troubles to the user, be glass owing to this water level gauge main material again, thereby explosion and fragmentation easily in use, in addition, the observation visual angle of this water level gauge is very little, can only top view.

The purpose of this utility model provides a kind of boiler electronics level displaying device, overcomes the shortcoming of prior art.

Describe in detail with reference to the accompanying drawings below.

Fig. 1, contour structures synoptic diagram of the present utility model

Fig. 2, indicating circuit wiring diagram of the present utility model

Fig. 3, the concrete wiring diagram of embodiment

Fig. 4, the structure front elevation of electronics water level dual color light emitting indicator of the present utility model

Fig. 5, the side cutaway view of Fig. 4

Fig. 6, the A-A sectional view of Fig. 4

Solution of the present utility model is as follows, referring to Fig. 1, it has a level sensor pipeline 2 that joins with boiler 1, a magnetic float 3 that fluctuates with water level is arranged in this pipeline, be provided with an electronic water level dual color light emitting indicator 4 at the level sensor pipeline, this luminous indication has a strip shell of vertically installing along the level sensor pipeline, shell is provided with luminous indication window, all fixedly mounting a magnetic switch open in usual on the position of each water level demonstration point that in housing, sets corresponding to the level sensor pipeline, and corresponding each water level shows that point is provided with a dual color light emitting indicating circuit, referring to Fig. 2, this indicating circuit is made of two transistor switching circuit direct-couplings, the light emitting diode 5 of two different colours ', 6 ' respectively be serially connected in two triodes 9 ', 10 ' colelctor electrode, to should water level showing that the magnetic switch 7 of point is serially connected in the base stage control end of this indicating circuit, and each adjacent water level shows that the base stage control end of some indicating circuit is connected together by an one-way conduction device again.

According to embodiment its principle of work is described below.

Referring to Fig. 3, suppose that magnetic float 3 is positioned at the position shown in the figure, then the magnetic switch 7 of this water level point correspondence is connected, triode 9 ' conducting simultaneously, triode 10 ' end, green LED 5 ' bright, red light emitting diodes 6 ' do not work, simultaneously, power supply V _cBe added on diode 8 and the whole diodes below it by magnetic switch 7, make their conducting, then magnetic switch each water level point below 7 in the corresponding indicating circuit triode 9 conductings and triode 10 ends, make the green LED of diode 5 ' following all bright, and diode 6 ' following red light emitting diodes does not all work, and realizes showing water with green glow; Meanwhile, the magnetic switch of magnetic switch more than 7 all is in static opening, each water level point the triode 9 in the corresponding indicating circuit be in cut-off state, power supply V _cBase biasing resistor by green LED in each indicating circuit 5 and triode 10 provides a very little base current for triode 10, make them be in conducting state, then the red light emitting diodes of diode 6 ' above is all bright, and diode 5 ' above green LED does not all work, realization shows vapour with ruddiness, thereby has reached the function of the double-colored demonstration of the red light green standard of vapour in the prior art.The work of this level displaying device is not subjected to the influence of boiler water quality, and dependable performance.

Again referring to Fig. 3, the orange light that this device can also add flood stage point shows, is made of triode 11, low-water level magnetic switch group 12, green LED group 13 and red light emitting diodes group 14 as the indicating circuit of low-water level dangerous point.Under the situation of ordinary water level, green LED group 13 is always bright, and triode 11 ends, red diode group 14 does not work, when water level is reduced to the pairing arbitrary water level point of magnetic switch group 12, triode 11 conductings, then red light emitting diodes group 14 is bright entirely, red green two color is simultaneously luminous, sends orange light after the colour mixture; The principle of work of high water stage dangerous point indicating circuit is with above-mentioned consistent, and its difference is when ordinary water level, and the red light emitting diodes group is always bright, and during dangerous high water stage, the green LED group is bright, sends orange light.

Referring to Fig. 4,5,6, in order to enlarge the visual angle, this device installs half garden cylindricality lampshade 20 of protrusion additional on luminous indication window, make observation visual angle reach 180 °.The 21st, shell body, the 22nd, magnetic switch installing plate, the 23rd, cushion, the 24th, indication circuit board, the 25th, the line of magnetic switch and indicating circuit, the 26th, luminous indicating diode, the 27th, panel.

This device has the Presentation Function with two-colour fluviograph performance unanimity, and has overcome the shortcoming of two-colour fluviograph, and the orange light that has increased observation visual angle and flood stage simultaneously shows, the display brightness height, but viewing distance increases.

Claims

1, the boiler water level display device, it is characterized in that: have a level sensor pipeline 2 that joins with boiler 1, a magnetic float 3 that fluctuates with water level is arranged in this pipeline, on the level sensor pipeline, be provided with an electronics water level dual color light emitting indicator 4, this luminous indication has a strip shell of vertically installing along the level sensor pipeline, shell is provided with luminous indication window, all fixedly mounting a magnetic switch open in usual on the position corresponding to each the water level display dot that sets on the level sensor pipeline in housing, and corresponding each water level display dot all is provided with a dual color light emitting indicating circuit, this indicating circuit directly is coupled by two transistor switching circuits and constitutes, the light emitting diode of two different colours is serially connected in the collector of two triodes respectively, magnetic switch that should the water level display dot is serially connected in the base stage control end of this indicating circuit, and the base stage control end of each adjacent water level display dot indicating circuit is connected together mutually by a single-phase conduction device again.

2, device as claimed in claim 1 is characterized in that: the cylindrical lampshade that is provided with protrusion at luminous indication window place.