CN2332893Y

CN2332893Y - Explosion-proof level limit alarmer for boiler

Info

Publication number: CN2332893Y
Application number: CN 98218042
Authority: CN
Inventors: 吴立云; 刘桂申
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-08-05
Filing date: 1998-08-05
Publication date: 1999-08-11
Anticipated expiration: 2008-08-05

Abstract

The utility model discloses a sound alarm for the limit of water level in a boiler, which is composed of a water air monitoring pipeline, a magnetic switch and a control circuit, wherein, the magnetic switch is arranged at the external side of the water air monitoring pipeline; the input and the output binding posts of the control circuit and the magnetic switch are connected. When the water level falls, a ring-shaped armature arranged in a float cylinder is attracted by the magnetic force to drive two contacts, which causes the two contacts to be contacted to form a closed circuit. A sound controlling device can send out voice, reminding operational people to add water in time.

Description

The explosion-proof water level limiting alarm of boiler instrument

The utility model relates to a kind of boiler anti-explosion alarming instrument, particularly utilizes calutron to come level monitoring also with the anti-explosion alarming instrument of audio alert, belongs to the auxiliary equipment of boiler plant, and ICL is G01F 23/22.

The device that is used for the boiler warning at present is a lot.Disclose a kind of boiler electronic alarm as CN 85203810, utilized temperature sensor and the electrical equipment be contained on the drum to cooperate the ruuning situation of monitoring boiler, thereby avoided causing boiler to burn or exploding because of overtemperature.CN 92201444 is disclosed to be that the liquid level that has the language alarm function shows and adjusting device, converts the liquid level variable signal to the signal of telecommunication by floating ball sensor, sends language alarm by loudspeaker.CN 92237504 discloses a kind of magnetic level monitor for another example, utilizes magnetic probe to move up and down, and drives the rotation of the magnetic pendulum in the magnetic relay, the connecting and disconnecting of control circuit, thus control is intake or is cut off the water supply and reports to the police automatically.Utilize the device of computer monitor and warning in addition, as CN 91223971.The complex structure that above-mentioned warning device has, the electrical equipment that has is too much, is making and using defectives such as having technology is numerous and diverse, volume is excessive, use inconvenience to some extent.

The purpose of this utility model is, a kind of audio alert instrument that uses calutron to report to the police when water level reaches capacity is provided.By physics and electronic installation being installed in the boiler outside, automatically the monitoring boiler water level changes, and when water level reaches safety margins, in time reports to the police and reminds operating personnel in time to add water, be difficult to judge the shortcoming of water level at night to overcome plain cylindrical furnace air pressure safety valve, avoid accident to take place.

Technology contents of the present utility model is: this alarm is monitored pipeline, magnetic switch and control circuit by aqueous vapor and is constituted, and wherein, aqueous vapor monitoring pipeline is installed on the boiler body, comprises metal outer pipe (1) and built-in buoy (2), and ring armature (3) is housed in the floating drum; Magnetic switch is installed in the aqueous vapor monitoring pipeline outside, by insulation board (4) floatless switch device, annular permanent magnet (5) is installed in to be with on the flexible copper sheet (6), the copper sheet upper end is fixed on the insulation board, and the contact of burn-oning is stretched out in the lower end, as last lead-in clamp (7), the output copper sheet contact of burn-oning, also be fixed on the insulation board,, magnetic core armature (9) be installed in the magnet as output wiring terminal (8); Control circuit links to each other with input, the output wiring terminal of magnetic switch, in rectifier (10), acoustic control integrated circuit (11), transformer (12), loudspeaker (13) are arranged.

When water level descended, floating drum reduced with the decline of water level, was installed in the attraction that the interior ring armature of floating drum is subjected to magnetic force, drove the contact, contacted the back with the output contact and formed closed circuit, and sound-controlled apparatus sends voice, reminded operating personnel in time to add water.When the water level rising, floating drum also rises thereupon, and armature rises to when breaking away from attraction in the floating drum, and switch makes movable contact separate with stationary contact under flexible effect, cuts off circuit, and sound-controlled apparatus quits work.

The utility model has the advantages that simple in structure, safe and reliable.The parts that the utility model adopts are permanent magnet and simple electrical equipment, do not have complicated line, and are simple in structure.Use the utility model, can utilize the characteristic of magnet, effectively water level is monitored, and in time use audio alert, have security and reliability.

Below in conjunction with drawings and Examples, the utility model is described in detail.

Accompanying drawing is a structural representation of the present utility model.

Parallel place opens a hole in boiler sight glass pipe upper end, as last aqueduct welding hole; Open a hole in the vertical lower of last aqueduct, as following aqueduct welding hole., fix as outer tube with seamless steel pipe, form the path (1) that an aqueous vapor all can be passed through with the card tube head.

Floating drum (2) is installed in vertical outer tube, and shape resembles a large capsule; Magnetic core ring armature (3) is installed in the floating drum, and floating drum can the oscilaltion with the variation of water level.

Insulation board (4) is fixed on vertical outer tube, and annular permanent magnet (5) is installed in to be with on the flexible copper sheet (6), and the copper sheet upper end is fixed on the insulation board, and the contact of burn-oning is stretched out in the lower end, as lead-in clamp (7); Export the contact of burn-oning on the copper sheet, also be fixed on the insulation board, as output wiring terminal (8).The separated attitude in two contacts.For strengthening magnetic attraction, magnetic core armature (9) can be installed in permanent magnet.

Rectifier (10), speech utterance integrated circuit (11), transformer (12) and loudspeaker (13) are arranged in the control circuit.These electrical equipments all adopt the commercially available prod, buy back installation combination and get final product.The lead-in clamp of magnetic switch links to each other with lead with the speech utterance integrated circuit, and output wiring terminal links to each other with loudspeaker.Control circuit is assembled into a control cabinet, is installed in the suitable operating position of operating personnel.

When water level reduced, floating drum reduced with the decline of water level, and the ring armature in the floating drum descends thereupon, magnetic switch is subjected to the attraction of magnetic force to overcome elasticity, drives the contact, makes the contact of two contacts, form closed circuit, control cabinet promptly sends voice signal, reminds operating personnel in time to add water.When water level rose, floating drum also rose thereupon, and armature rises to when breaking away from attraction in the floating drum, and switch makes two contact separation under flexible effect, cut off circuit, and control cabinet quits work.

Claims

The explosion-proof water level limiting alarm of a kind of boiler instrument is characterized in that, this alarm is monitored pipeline, magnetic switch and control circuit by aqueous vapor and constituted, wherein, aqueous vapor monitoring pipeline is installed on the boiler body, comprises metal outer pipe (1) and built-in buoy (2), and ring armature (3) is housed in the floating drum; Magnetic switch is installed in the aqueous vapor monitoring pipeline outside, by insulation board (4) floatless switch device, annular permanent magnet (5) is installed in to be with on the flexible copper sheet (6), the copper sheet upper end is fixed on the insulation board, and the contact of burn-oning is stretched out in the lower end, as lead-in clamp (7), the output copper sheet contact of burn-oning, also be fixed on the insulation board,, magnetic core armature (9) be installed in the magnet as output wiring terminal (8); Control circuit links to each other with input, the output wiring terminal of magnetic switch, in rectifier (10), acoustic control integrated circuit (11), transformer (12), loudspeaker (13) are arranged.