CN2222889Y

CN2222889Y - Continuous thermometering device for rotary kiln

Info

Publication number: CN2222889Y
Application number: CN 95216824
Authority: CN
Inventors: 陈志成
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-08-25
Filing date: 1995-08-25
Publication date: 1996-03-20
Anticipated expiration: 2005-08-25

Abstract

The utility model relates to a continuous temperature testing device for rotary kilns, which is composed of a thermocouple, a copper ring and a thermoelectric signal conveying mechanism. The utility model is characterized in that the external protection tube of the thermocouple is made into a high-temperature wear-resistant protecting pipe section by tungsten-nickel-chromium alloy, and the thermoelectric signal conveying mechanism is composed of a conductive wheel, a leaf spring arm, a leaf spring arm rotating shaft and a temperature display instrument. The utility model has the advantage that the external protecting tube of the thermocouple is wear-resisting. The conductive follow wheel system constituted by the thermoelectric signal conveying mechanism can form a three-rotating-shaft mechanism, so the conductive wheel can move along the axial cord of the kiln. Meanwhile, the small bending of a follow copper ring can rapidly turn, so the conductive wheel can roll along the copper ring, the frictional force can be reduced, and therefore, the signal can stably pass. The utility model is suitable for continuous temperature testing for various rotary kilns.

Description

Rotary kiln continuous temperature measurement device

The utility model belongs to the temperature measuring equipment of Industrial Stoves, relates to a kind of application heating, the device that the rotary kiln furnace high-temperature is carried out continuous measurement.

Producing the decomposition temperature of the large-sized rotary kiln of portland cement, is most important response parameter, directly determines cement to burn till quality and furnace service life.Existing temp measuring method and device are: the two parallel copper ring is set on the furnace shell of kiln, copper ring surrounds the annulus (3～4 meters of diameters) that diameter is a bit larger tham the kiln diameter by the copper coin bar of 14 millimeters of diameters, with more than ten insulation porcelain seats copper ring is fixed on the furnace shell, each other electric insulation; The thermocouple temperature measurement probe is passed the kiln flame retardant coating, insert in the raw material of hybrid reaction, the temperature that ungirds at the kiln branch is 1050～1100 ℃, and the reference edge of thermocouple is drawn a pair of compensating wire, receives separately on the copper ring; Motor turns round continuously by the speed of roller driving kiln with 1.25 rev/mins; Draw thermoelectric signal from copper ring, be sent on the temperature display meter.The problem that present this device exists is: the life-span of the outer protection tube of thermocouple is extremely low, can only can't resist the defibrator process erosion of silicate starting materials under the high temperature with 7～10 days; A little less than the transmission signal of thermocouple is atomic, only there are several millivolts to 50 millivolts.Therefore the loss that requires to draw reduces.The loss reason is because existing copper ring is manual surrounding, in sequence of operations such as centering on, weld, fix, leave the bending of tens of places after making straight copper bar form copper ring, part be since furnace shell everywhere temperature differ, thermal stress causes the furnace shell self-deformation to make copper ring be out of shape generation thereupon.The situation of copper ring deviation theory circumference is, axially is ± 70 millimeters at kiln, radially is ± 50 millimeters, and minimum profile curvature radius only is 50 millimeters.Simultaneously, in kiln when revolution,, it is ± 50 millimeters periodicity displacement that kiln has amplitude vertically.

The purpose of this utility model is; the outer protection tube of thermocouple and the cover conduction that design and produce a kind of high-temperature wearable erosion are followed wheeled thermoelectric signal connecting gear; so that the outer protection tube of raising thermocouple service life; reduce the loss of thermocouple signal transmission course, more accurately and timely the decomposition high-temperature temperature value of silicate starting materials in the METHOD FOR CONTINUOUS DETERMINATION kiln.

Rotary kiln continuous temperature measurement device of the present utility model, form by thermocouple, copper ring, thermoelectric signal transport sector, it is characterized in that, the outer protection tube of thermocouple is to make continue pipeline section and flange of high-temperature wearable protection pipeline section and stainless steel through hole by chromium nickel tungsten-bast alloy car to link into an integrated entity, and is provided with the draw-in groove that is used for elasticity grafting thermocouple in flange hole;

Thermoelectric signal connecting gear is made of conductive casters, guide wheel shaft, leaf spring arm, leaf spring arm turning cylinder, temperature display meter; Conductive casters is provided with the cavity of storing lubricating grease, and reverse thread is adopted in the bearing lubrication sealing, and conductive casters is installed on the guide wheel shaft by a pair of rolling bearing, and guide wheel shaft one end is provided with sliding bearing, and supporting base and bearing support are one; The guide wheel shaft other end is suspending in midair with two helical springs, and slides in being parallel to the groove of leaf spring arm; Leaf spring arm is the strip latch plate, and an end connects the support of conductive casters, and the other end connects the leaf spring arm turning cylinder, and the rolling bearing of leaf spring arm turning cylinder is installed in the bearing block of temperature display meter case top.

Using method of the present utility model is that thermocouple is obtained thermoelectric signal, passes to conductive casters by copper ring; Conductive casters is installed on the guide wheel shaft by a pair of rolling bearing, and guide wheel shaft one end is equipped with sliding bearing, and supporting base and support are one, and the guide wheel shaft other end is suspending in midair with two helical springs, and slides in being parallel to helical spring groove; Helical spring gravity of making a concerted effort with conductive casters, with the pressure balance of copper ring to conductive casters, like this, the power vertical with guide wheel shaft that acts on the conductive casters all will make guide wheel around sliding bearing deflection, it is little when crooked that to be copper ring axially have at kiln, and conductive casters will be with the little curved racing of copper ring; Conductive casters provides by leaf spring arm the pressure of copper ring, and it is actually 1.2 meters of length, and wide 70 millimeters, thick 4 millimeters latch plate has pre-designed deflection under free state, and under the compressing power F of copper ring, promptly duty is bordering on straight shape.Power F is by appropriate selection, 16N for example, with radially fluctuating between 12N～20N of copper ring, with keep copper ring and conductive casters electric contact good, the unlikely again wearing and tearing that cause copper ring, the other end leaf spring arm turning cylinder of leaf spring arm is equipped with rolling bearing, and require that leaf spring arm is vertical with the leaf spring arm turning cylinder under the duty, conductive casters is subjected to any axial force arm is swayed like this, thereby copper ring is along vertical fluctuating of kiln axis, all drive the whole same side shifting of conductive casters, and guarantee conductive casters all the time radially along kiln to the pressure of copper ring, promptly vertical with furnace shell.The rolling bearing of leaf spring arm turning cylinder is placed in the bearing block, and bearing block can be installed in the top of field instrument case, and it becomes 30 ° with ground, makes that in working order leaf spring arm and copper ring are tangent, and at this moment, conductive casters is tangent around the plane and the copper ring of supporting swing.

The utility model has the advantages that: the outer protection tube of high-temperature wearable erosion thermocouple adopts in the flange hole processes dark 0.8 millimeter, wide 0.7 millimeter groove, match with the elastic tube on the thermocouple, constitute elasticity and insert connection, be beneficial to the thermocouple fuse and after damage, needn't stop the kiln replacing; The conduction that thermoelectric signal connecting gear constitutes is followed wheel system, forms three rotating shaft mechanisms, and first rotating shaft and ground are 30 degree, with the stove axis normal, feasiblely is fixed on leaf spring arm on the axle when bearing copper ring pressure, is being with conductive casters to move along the kiln axis; Second axle is at the other end of leaf spring arm, and conductive casters can rotate in the leaf spring arm plane around this axle under the helical spring suspension force, so that conductive casters follows the little curved racing of copper ring closely; The 3rd axle is the rotating shaft of conductive casters self, and conductive casters is rolled along copper ring, the frictional force between copper ring and the conductive casters reduced to minimum, and make signal steadily pass through.Conductive casters is relative with copper ring to roll, and contact resistance is 0.05 ohm, is 0.05 ± 0.02 ohm during running, and the signal fluctuation that shows on the digital watch is 1050 ℃ ± 1 ℃, less than the measuring accuracy of digital display meter.Entire mechanism makes the copper ring conduction contact force between paying 1.6 ± 0.2 kilograms of variations.Be applicable to that portland cement, lithium carbonate, phosphate fertilizer, ore burn in the production, diameter is the continuous temperature measurement of 1 meter to 5 meters various rotary kilns.

Below in conjunction with drawings and Examples, the utility model will be further described:

Fig. 1 is a rotary kiln continuous temperature measurement device construction schematic diagram

Fig. 2 is the side view of Fig. 1

Fig. 3 is the outer protection tube structural map of rotary kiln continuous temperature measurement device thermocouple

Fig. 4 is the thermoelectric signal connecting gear schematic diagram of rotary kiln continuous temperature measurement device

Fig. 5 is the conductive casters organigram of rotary kiln continuous temperature measurement device

As seen from the figure, rotary kiln continuous temperature measurement device, form by thermocouple, copper ring, thermoelectric signal transport sector, it is characterized in that, the outer protection tube of thermocouple is to make continue pipeline section 2 and flange 3 of high-temperature wearable protection pipeline section 1 and stainless steel through hole by chromium nickel tungsten-bast alloy car to link into an integrated entity, and is provided with the draw-in groove 5 that is used for elasticity grafting thermocouple 4 in flange hole;

Thermoelectric signal connecting gear is made of conductive casters, leaf spring arm, leaf spring arm turning cylinder, temperature display meter, conductive casters 6 is provided with the cavity that stores lubricating grease, reverse thread is adopted in the bearing lubrication sealing, conductive casters is installed on the guide wheel shaft 7 by a pair of rolling bearing, guide wheel shaft one end is provided with sliding bearing, and supporting base and bearing support are one; The guide wheel shaft other end is suspending in midair with two helical springs 8, and slides in being parallel to the groove of leaf spring arm;

Leaf spring arm 9 is the strip latch plate, and an end connects the support 10 of conductive casters, and the other end connects leaf spring arm turning cylinder 11, and the rolling bearing of leaf spring arm turning cylinder is installed in the bearing block of temperature display meter case 12 tops.

Claims

1, a kind of rotary kiln continuous temperature measurement device, form by thermocouple, copper ring, thermoelectric signal connecting gear, it is characterized in that, the outer protection tube of thermocouple is to make continue pipeline section and flange of high-temperature wearable protection pipeline section and stainless steel through hole by chromium nickel tungsten-bast alloy car to link into an integrated entity, and is provided with the draw-in groove that is used for elasticity grafting thermocouple in flange hole;

Thermoelectric signal connecting gear is made of conductive casters, leaf spring arm, leaf spring arm turning cylinder, temperature display meter, conductive casters is provided with the cavity that stores lubricating grease, reverse thread is adopted in the bearing lubrication sealing, conductive casters is installed on the guide wheel shaft by a pair of rolling bearing, guide wheel shaft one end is provided with sliding bearing, and supporting base and bearing support are one; The guide wheel shaft other end is suspending in midair with two helical springs, and slides in being parallel to the groove of leaf spring arm; Leaf spring arm is the strip latch plate, and an end connects the support of conductive casters, and the other end connects the leaf spring arm turning cylinder, and the rolling bearing of leaf spring arm turning cylinder is installed in the bearing block of temperature display meter case top.