CN2856929Y

CN2856929Y - On-line monitor for scale

Info

Publication number: CN2856929Y
Application number: CN 200520143510
Authority: CN
Inventors: 任惠军; 骈智慧; 张国军; 冯均燚; 李金超; 卢海刚
Original assignee: ANYANG FANGKUAI BOILER Co Ltd
Current assignee: ANYANG FANGKUAI BOILER Co Ltd
Priority date: 2005-12-05
Filing date: 2005-12-05
Publication date: 2007-01-10
Anticipated expiration: 2015-12-05

Abstract

A scale on-line monitoring device belongs to a boiler field in hot working subject, which is suitable for detecting boiler scale. The utility model is characterized in that two holes are arranged on a board, a composite tube with two deep blind holes is mounted in one hole, two blind holes are provided with a resistance wire and a temperature sensor respectively, a temperature pipe with another temperature sensor is mounted in another hole, two temperature sensors are provided with leads, and the leads are both connected with temperature transmitters, the two temperature transmitters are connected to an analog modular converter by leads, and the analog modular converter is connected with a programmable logic controller by leads, and the programmable logic controller is connected with a buzzer alarm by leads. The utility model can detect the scaling thickness of the boiler and remind the user to clean the boiler at any moment, thereby achieving the aim of saving energy and satisfying the working efficiency.

Description

The incrustation scale on-line monitoring device

One, technical field: the utility model belongs to the field of boilers in thermal technology's specialty.

Two, background technology: boiler is to be used for producing steam or hot water, for industry or civilian a kind of equipment, water is arranged all in this equipment, and water is as the medium of thermal source.Contain calcium ions and magnesium ions in the water, water just becomes incrustation scale through heating back calcium ions and magnesium ions, sticks in firmly on the inwall of boiler, and this boiler heat-transfer coefficient reduces greatly, and not only boiler does not produce due production efficiency, and has greatly wasted fuel.Incrustation scale is a harm greatly of boiler, in time remove.Incrustation scale is slowly to tie thickly, ties thickly to a certain degree the time, and boiler applications unit will prepurging, removes incrustation scale.Incrustation scale is in the boiler the inside, the outside is invisible, when want boiler rinsing, all be by rule of thumb or the time boiler rinsing that uses according to boiler in the past, this way is science neither, therefore also can cause unnecessary waste, be necessary to make a kind of device of thickness measuring of boiler scale, guarantee that boiler works necessary under normal condition.

Three, summary of the invention: the purpose of this utility model is exactly to design the incrustation scale on-line monitoring device that a kind of user of prompting in time clears up boiler scale.The utility model major technique is: have two holes on the plate, a complex pipe is housed in the hole, two dark blind holes are arranged on the complex pipe, in the blind hole resistance wire is housed, in another blind hole temperature sensor is housed, adorn a temperature tube in another hole on the plate, temperature sensor is housed in the temperature tube, be connected to lead on two temperature sensors, be connected to temperature transmitter on the lead respectively, have lead to be connected with the analog quantity modular converter on two temperature transmitters again, the analog quantity modular converter is connected with programmable logic controller with lead, and programmable logic controller has lead to be connected with buzzer siren.The utility model major advantage is: can detect the fouling thickness of boiler, remind user's boiler rinsing at any time, reach the purpose of saving the energy and satisfying work efficiency.

Four, description of drawings: Fig. 1 is the assembling connection diagram that the utility model partial elevational is analysed and observe, Fig. 2 is the local schematic top plan view of Fig. 1, Fig. 3 is that the partial elevational of another kind of embodiment is analysed and observe the assembling connection diagram, and Fig. 4 is the local schematic top plan view of Fig. 3, and Fig. 5 is the L-L sectional schematic diagram of Fig. 3.

Five, embodiment: describe the utility model details and working condition in detail in conjunction with Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5.On boiler wall (18), open a hole, adorn plate (5) and the weld assembly of managing (8) in the hole, mode with welding is welded on this grip assembly on the boiler wall (18) again, on plate (5), have two holes (19), (20), a complex pipe (8) is equipped with in lining, a hole (19), two dark blind holes (21) are arranged on the complex pipe, (22), resistance wire (7) is equipped with in a blind hole (21) lining, temperature sensor (11) is equipped with in another blind hole (22) lining, a temperature tube (10) is adorned in lining, another hole (20) on the plate (5), temperature sensor (11) is housed in the temperature tube, be connected to lead (16) on two temperature sensors (11), be connected to temperature transmitter (12) on the lead respectively, there is lead (16) to be connected on two temperature transmitters again with analog quantity modular converter (13), the analog quantity modular converter is connected with programmable logic controller (14) with lead (16), has lead (16) to be connected with buzzer siren (15) on the programmable logic controller.Resistance wire (7) is gone up live wire (17) and is connected with power supply, resistance wire is used for heating usefulness, it is high that water temperature around the resistance wire is wanted, scaling wants fast on the tube wall of complex pipe (8), so the temperature that the temperature sensor in complex pipe (11) spreads out of is just high, temperature tube (10) is in the vast water liquid that is placed in the boiler, there is not the resistance wire heating, wanting that incrustation scale is just tied on the thermometric tube wall is slow, the temperature that temperature sensor (11) in the temperature tube spreads out of will be lower than the temperature that the interior temperature sensor of complex pipe (8) (11) spreads out of, the temperature that these two temperature sensors spread out of just has a difference, and this difference is increasing.Temperature sensor is the PT100 type, temperature sensor is temperature variation, be converted into the variation of resistance, the resistance that these two temperature sensors spread out of is delivered on the temperature transmitter (12), the model WS905 type of temperature transmitter, temperature transmitter is converted into voltage to resistance, voltage variety outputs to analog quantity modular converter (13), the model of analog quantity modular converter is the CPM1A-AD041 type, the analog quantity modular converter is converted into digital quantity signal to the voltage signal that temperature transmitter transmits, digital quantity signal is transferred to programmable logic controller (14) lining, the model of programmable logic controller is an OMRON CPM2AH type, the digital signal that programmable logic controller is come to conversion is handled, and reaches the laggard line output of value that program sets, and outputs to buzzer siren and reports to the police.The value of the setting of saying here is the value that draws through experiment, two temperature gaps that temperature sensor spreads out of just telling about previously, and on behalf of gyp thickness, this value reach a certain amount of value, and alarm sends warning, reminds the user to want boiler rinsing.Plate has been done a hole on (5), silk is equipped with screw (1) in the hole, fix a flange (4) with screw (1), spring washer (2), plain washer (3), have two holes (19), (20) on the flange, complex pipe (8) is equipped with in lining, hole (19), temperature tube (10) is equipped with in lining, hole (20), and complex pipe and temperature tube are gone up welding at flange (4) and fixed, and between plate (5) and flange (4) sealing gasket (9) are housed.Actual practice is earlier complex pipe (8) and temperature tube (10) to be weldingly fixed in two holes (19), (20) of flange (4), in two holes (19) of complex pipe and temperature tube reeve plate (5), (20), uses screw (1) to fix again again.The utility model also has another way, on flange (4) and plate (5), open three corresponding holes (20), (21), (22) exactly, temperature tube (10) is equipped with in (20), (22) lining in the hole, temperature is housed in temperature tube passes device (11), heating tube (23) is equipped with in (21) lining in the hole, resistance wire (7) is housed in the heating tube, the termination of the heating tube (23) of the temperature tube (10) of lining, hole (22) and lining, hole (21) is bundled into one with foreskin (24).Other way is the same with the described way in front.The way that the utility model adopts is foregoing way.

Claims

1, a kind of incrustation scale on-line monitoring device, be characterised in that: on plate (5), have two holes (19), (20), a complex pipe (8) is equipped with in lining, a hole (19), two dark blind holes (21) are arranged on the complex pipe, (22), resistance wire (7) is equipped with in a blind hole (21) lining, temperature sensor (11) is equipped with in another blind hole (22) lining, a temperature tube (10) is adorned in lining, another hole (20) on the plate (5), temperature sensor (11) is housed in the temperature tube, be connected to lead (16) on two temperature sensors (11), be connected to temperature transmitter (12) on the lead respectively, there is lead (16) to be connected on two temperature transmitters again with analog quantity modular converter (13), the analog quantity modular converter is connected with programmable logic controller (14) with lead (16), has lead (16) to be connected with buzzer siren (15) on the programmable logic controller.

2, a kind of incrustation scale on-line monitoring device according to claim 1, it is characterized in that: on plate (5), done a hole, silk is equipped with screw (1) in the hole, fix a flange (4) with screw (1), spring washer (2), plain washer (3), have two holes (19), (20) on the flange, complex pipe (8) is equipped with in lining, hole (19), and temperature tube (10) is equipped with in lining, hole (20), complex pipe and temperature tube are gone up welding at flange (4) and are fixed, and between plate (5) and flange (4) sealing gasket (9) are housed.