CN115901856A - Heat detection equipment - Google Patents

Abstract

The utility model provides a heat detection device, which is applied to the technical field of energy sources and comprises a combustion device, an ignition laser, a temperature measuring meter and a control module, wherein the combustion device is provided with a combustion cavity, the combustion cavity is provided with an irradiation port, and a crucible for bearing a coal sample is suitable to be placed in the combustion cavity; the ignition laser is arranged above the combustion device and emits laser to the coal sample in the combustion cavity through the irradiation hole of the combustion cavity so as to ignite the coal sample; the temperature meter is used for detecting the temperature of a heat exchange medium exchanging heat with the heat in the combustion chamber and generating a temperature signal; the control module is in communication connection with the temperature meter to receive the temperature signal. The heat detection equipment has the advantages of convenience in experiment and accurate result.

Description

Heat detection equipment

Technical Field

The present disclosure relates to the field of energy technology, and more particularly, to a heat detection device.

Background

With the development of industrialization today, coal energy is increasingly in tension, and in order to obtain higher combustion efficiency, the heat index of coal needs to be measured so as to fully utilize the coal energy. In the prior art, an oxygen bomb calorimeter uses an electric heating wire or a cotton wire as an ignition substance, and the background of unstable combustion heat needs to be deducted when the final heat quantity is measured. And when a plurality of times of sample measurement are carried out, the oxygen bomb needs to be replaced, and different oxygen bombs have different manufacturing differential thermal resistances, so that the measurement time of the samples measured by using different oxygen bombs is different, and the heat dissipation time is different. In addition, errors are inconsistent after calibration of different oxygen bombs, so that measurement errors are inconsistent from sample to sample, which makes thermal analysis difficult and reduces accuracy.

Disclosure of Invention

In order to solve the above problems in the prior art, an embodiment of the present disclosure provides a heat detection device, which has the advantages of being convenient for experiments and accurate in result.

One aspect of the present disclosure provides a heat detection apparatus for measuring a heat index of coal, the heat detection apparatus includes a combustion device, a pilot laser, a temperature measuring meter, and a control module, the combustion device has a combustion chamber, the combustion chamber has an irradiation port, and a crucible for bearing a coal sample is disposed in the combustion chamber; the ignition laser is arranged above the combustion device and emits laser to the coal sample in the combustion cavity through the irradiation hole of the combustion cavity so as to ignite the coal sample; the temperature meter is used for detecting the temperature of a heat exchange medium exchanging heat with the heat in the combustion chamber and generating a temperature signal; the control module is in communication connection with the temperature meter to receive the temperature signal.

According to this heat check out test set of this disclosure embodiment, can be convenient for ignite the coal sample through setting up the laser that ignites, because the heat of igniting the laser is more stable, the heat that needs deduct when final heat measurement measures easily for the calculation of heat index is comparatively accurate. And when the coal sample is measured for many times, the ignition laser does not need to be replaced, so that the measurement time and the heat dissipation time of different coal samples are the same, and the smooth experiment is facilitated. Because the ignition laser does not need to be replaced, the consistency of the heat error introduced every time is good, so that the measurement error between the samples is consistent, the heat analysis is convenient, and the result accuracy is high.

In some embodiments, the heat detection device further includes a first liquid storage tank, the first liquid storage tank is surrounded outside the combustion chamber, a heat exchange liquid is introduced into the first liquid storage tank, and a probe of the temperature meter is arranged in the first liquid storage tank to measure the temperature of the heat exchange liquid in the first liquid storage tank in real time and generate a temperature signal.

In some embodiments, the first liquid storage tank is an annular liquid storage tank and comprises a first liquid containing portion and a first hollow portion, heat exchange liquid is introduced into the first liquid containing portion, at least part of the combustion device is arranged in the first hollow portion, the heat detection equipment further comprises a heat exchange tube, the heat exchange tube is arranged in the first liquid containing portion, one end of the heat exchange tube is communicated with the combustion cavity, and the other end of the heat exchange tube is communicated with the external environment.

In some embodiments, the heat detecting device further comprises a stirring paddle, and the stirring paddle is rotatably arranged in the first liquid containing part.

In some embodiments, the heat detection device further comprises: the circulating pump is communicated with the first liquid containing part; the refrigeration module is communicated with the circulating pump, and the circulating pump pumps the heat exchange liquid in the first liquid containing part to the refrigeration module; the second liquid storage tank is communicated with the refrigeration module, the refrigeration module inputs the refrigerated heat exchange liquid into the second liquid storage tank, and the second liquid storage tank is communicated with the first liquid containing part so as to flow the heat exchange liquid flowing into the second liquid storage tank into the first liquid containing part.

In some embodiments, the second liquid storage tank includes a second liquid containing portion and a second hollow portion recessed upward from the bottom into the second liquid containing portion, the second liquid containing portion is communicated with the refrigeration module, the refrigeration module inputs the refrigerated heat exchange liquid into the second liquid containing portion, the second liquid containing portion is communicated with the first liquid containing portion, and at least a part of the first liquid storage tank and the combustion device is disposed in the second hollow portion.

In some embodiments, the heat detecting device further includes a heat insulating member disposed in the second hollow portion between the annular outer wall of the first liquid containing portion and the annular inner wall of the second liquid containing portion.

In some embodiments, the heat detecting apparatus further includes a supporting assembly, the first liquid storage tank, the second liquid storage tank and the combustion device are disposed on the supporting assembly, the supporting assembly has an air inlet, the air inlet is communicated with the combustion chamber, and the gas required by the combustion of the coal sample enters the combustion chamber through the air inlet.

In some embodiments, the support assembly comprises: a support; the supporting seat, the supporting seat is located the support, the supporting seat includes first supporting part and second supporting part, the holding surface of second supporting part is higher than the holding surface of first supporting part, the second liquid reserve tank with first liquid reserve tank is located first supporting part, the part of second supporting part stretches into well kenozooecium in the second, just the holding surface of second supporting part with the bottom parallel and level of first liquid reserve tank, burner's bottom is located on the holding surface of second supporting part, burner's bottom has the through hole, the through hole with the second supporting part the air inlet intercommunication.

In some embodiments, the heat detection device further comprises: the elastic piece is arranged on the second supporting part; the tray is arranged on the elastic piece, and the crucible for bearing the coal sample is suitable for being placed in the tray; a dust cover, wherein when the dust cover is covered on the crucible, the elastic member is in a compressed state; and one end of the laser tube is arranged in the crucible and is opposite to the coal sample, and the other end of the laser tube penetrates through the dust cover and is opposite to the irradiation port.

In some embodiments, the heat detecting device further includes a driving member and a transmission member, one end of the transmission member is connected to the driving member, the other end of the transmission member is connected to the second liquid storage tank, and the driving member is adapted to drive the transmission member to drive the second liquid storage tank, and the first liquid storage tank and the combustion device disposed in the second hollow portion to be separated from and connected to the supporting seat.

In some embodiments, the heat detection device further comprises: the glass cover plate is obliquely arranged on the irradiation port to seal the irradiation port, and laser emitted by the ignition laser penetrates through the glass cover plate to irradiate the coal sample; and the detector is horizontal to the glass cover plate and is arranged opposite to the irradiation surface of the glass cover plate.

Additional aspects and advantages of the disclosure will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the disclosure.

Drawings

For a more complete understanding of the present disclosure and the advantages thereof, reference is now made to the following descriptions taken in conjunction with the accompanying drawings, in which:

FIG. 1 is a schematic structural diagram of a heat sensing device according to an embodiment of the present disclosure;

FIG. 2 is a cross-sectional view of a heat sensing device according to an embodiment of the present disclosure;

FIG. 3 is a schematic illustration of laser light partially reflecting as it passes through the interface of a glass cover plate and air in accordance with an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of a coal quality analysis system according to an embodiment of the present disclosure.

Reference numerals:

the mass of coal analysis system 1000, crucible 100d,

the heat detecting device 100b is provided with,

the combustion device 1b, the combustion chamber 11b,

a temperature measuring meter 2b, a first liquid storage tank 3b, a first liquid containing part 3lb,

a heat exchange tube 4b, a stirring paddle 5b, a circulating pump 6b, a water pumping tube 6lb, a refrigeration module 7b, a second liquid storage tank 8b, a second liquid containing part 8lb, a heat insulation piece 9b,

a support assembly l0b, a bracket l0lb, a support base 102b, a first support 1021b, a second support 1022b, an air inlet 10221b,

ignition laser 20b, spring 30b, tray 40b, dust cover 50b, laser tube 60b,

a driving member 70b, a transmission member 80b, a glass cover plate 90b, a detector ll0b, an attenuator 120b, a baffle 130b, a control module 140b,

a heating furnace l00a, a loading rack 100e, an equipment bin 1e and an electrical appliance bin 2e.

Detailed Description

Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. It should be understood that these descriptions are illustrative only and are not intended to limit the scope of the present disclosure. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present disclosure. In addition, the various embodiments provided below of the present disclosure and technical features in the embodiments may be combined with each other in any manner.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. Furthermore, the terms "comprises," "comprising," and the like, as used herein, specify the presence of stated features, steps, operations, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, or components. All terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art unless otherwise defined. It is noted that the terms used herein should be interpreted as having a meaning that is consistent with the context of this specification and should not be interpreted in an idealized or overly formal sense.

With the development of industrialization today, coal energy is increasingly in tension, and in order to obtain higher combustion efficiency, the heat index of coal needs to be measured so as to fully utilize the coal energy. In the prior art, an oxygen bomb calorimeter uses an electric heating wire or a cotton thread as an ignition substance, and the unstable combustion heat background needs to be deducted during final heat metering. And when the sample is measured for many times, the oxygen bomb needs to be replaced, and different oxygen bombs have different manufacturing difference thermal resistances, so that the measurement time of the sample measured by using different oxygen bombs is different, and the heat dissipation time is different. In addition, errors are inconsistent after different oxygen bomb calibrations, thereby causing measurement errors to be inconsistent from sample to sample, causing difficulties and reduced accuracy in thermal analysis.

The heat detection apparatus 100b and the coal quality analysis system 1000 according to the embodiment of the present disclosure are described below with reference to fig. 1 to 4.

As shown in fig. 1 to 3, the heat detecting apparatus 100b according to the embodiment of the present disclosure for measuring a heat index of coal, the heat detecting apparatus 100b may include a combustion device 1b, a pilot laser 20b, a temperature meter 2b, and a control module 140b. The combustion device 1b is provided with a combustion chamber 11b, the combustion chamber 11b is provided with an irradiation port, and a crucible 100d for bearing a coal sample is placed in the combustion chamber 11 b; the ignition laser 20b is arranged above the combustion device 1b, and emits laser to the coal sample in the combustion chamber 11b through an irradiation port of the combustion chamber 11b to ignite the coal sample; the temperature meter 2b is used for detecting the temperature of the heat exchange medium exchanging heat with the heat in the combustion chamber 11b and generating a temperature signal, and the temperature meter 2b is in communication connection with the control module 140b.

Wherein, it can be convenient for ignite the coal sample to set up ignition laser 20b, temperature measurement meter 2b can measure the temperature of heat transfer medium before the coal sample burns, and generate temperature signal transmission to control module 140b, temperature measurement meter 2b can measure the temperature of heat transfer medium after the coal sample burns, and generate temperature signal transmission to control module 140b, control module 140b can calculate the heat index of coal promptly according to the heat that the temperature of heat transfer medium before the coal sample burns, the temperature of heat transfer medium after the coal sample burns and ignition laser 20b introduced.

In addition, the ignition of the coal sample is accomplished using an ignition laser 20b, which is highly repeatable and requires no maintenance. In some experimental data, a single analytical ignition for 5 minutes, calculated as 80% light decay (ignition laser 20b lifetime characteristic), can be used over 3.8 million times. Calculated by 32 samples/day, more than 1200 days can be used. When the allowable error is 1%, the standard sample is used for calibration once a week until the laser energy can not ignite the coal sample. The above experimental data are merely illustrative and are not to be construed as limiting the present disclosure.

According to the heat detection device 100b of the embodiment of the present disclosure, the ignition laser 20b can be provided to ignite the coal sample conveniently, and since the heat of the ignition laser 20b is stable, the heat required to be deducted during the final heat measurement is easy to measure, so that the calculation of the heat index is accurate. And when many times coal sample measurement, need not to change laser 20b that ignites for the measurement time of different coal sample is the same and the heat dissipation time is the same, is favorable to going on smoothly of experiment. Because the ignition laser 20b does not need to be replaced, the consistency of the thermal errors introduced every time is good, so that the measurement errors between samples are consistent, the thermal analysis is convenient, and the result accuracy is high.

According to some embodiments of the present disclosure, as shown in fig. 1 and 2, the heat detecting apparatus l00b may further include a first liquid storage tank 3b, the first liquid storage tank 3b is enclosed outside the combustion chamber 11b, a heat exchange liquid is introduced into the first liquid storage tank 3b, and a probe of the temperature measuring meter 2b is disposed in the first liquid storage tank 3b to measure the temperature of the heat exchange liquid in the first liquid storage tank 3b in real time and generate a temperature signal. Therefore, the heat of the coal sample burned in the combustion chamber 11b can be transferred to the heat-exchange liquid, the temperature meter 2b can measure the temperature of the heat-exchange liquid in real time and transmit the temperature signal to the control module 140b, and the control module 140b can obtain the heat index of the coal sample by analyzing the temperature of the heat-exchange liquid before heat exchange and the temperature of the heat-exchange liquid after heat exchange.

In some embodiments of the present disclosure, as shown in fig. 2, the first liquid storage tank 3b is an annular liquid storage tank, the first liquid storage tank 3b includes a first liquid containing portion 31b and a first hollow portion, a heat exchange liquid is introduced into the first liquid containing portion 31b, at least a portion of the combustion device 1b is disposed in the first hollow portion, the heat detection apparatus 100b further includes a heat exchange tube 4b, the heat exchange tube 4b is disposed in the first liquid containing portion 31b, one end of the heat exchange tube 4b is communicated with the combustion chamber 11b, and the other end of the heat exchange tube 4b is communicated with an external environment. Here, the inner wall surface of the first reservoir 3b and the wall surface of the portion of the combustion apparatus 1b provided in the first hollow portion may be the same wall surface or different wall surfaces. When the inner circumferential wall surface of the first reservoir 3b and the wall surface of the portion of the combustion apparatus 1b provided in the first hollow portion are the same wall surface, at least a part of the combustion apparatus 1b sinks into the heat-exchange liquid.

Therefore, heat of a combustion coal sample in the combustion chamber 11b can enter the heat exchange tube 4b, the heat can be exchanged to the heat exchange liquid through the heat exchange tube 4b, the temperature meter 2b can measure the temperature of the heat exchange liquid in real time and transmit a temperature signal to the control module 140b, and the control module 140b can obtain the heat index of the coal sample by analyzing the temperature of the heat exchange liquid before heat exchange and the temperature of the heat exchange liquid after heat exchange. The first hollow portion of the second liquid storage tank 8b can facilitate the arrangement of at least part of the combustion device 1b, and is favorable for realizing the heat exchange of the heat in the combustion chamber 11b to the heat exchange liquid in the first liquid containing portion 31b.

According to some embodiments of the present disclosure, as shown in fig. 2, the heat detecting apparatus 100b further includes a stirring paddle 5b, and the stirring paddle 5b is rotatably disposed in the first liquid containing portion 31b. Therefore, the stirring paddle 5b can homogenize the temperature of the heat-exchange liquid in the first liquid containing part 31b, so that the measurement result is more accurate.

In some embodiments of the present disclosure, as shown in fig. 1 and 2, the heat detection device 1O0b further includes a circulation pump 6b, a refrigeration module 7b, and a second tank 8b. The circulation pump 6b communicates with the first liquid containing portion 31 b; the refrigeration module 7b is communicated with a circulating pump 6b, and the circulating pump 6b pumps the heat exchange liquid in the first liquid containing part 31b to the refrigeration module 7b; the second liquid storage tank 8b is communicated with the refrigeration module 7b, the refrigeration module 7b inputs the refrigerated heat-exchange liquid into the second liquid storage tank 8b, and the second liquid storage tank 8b is communicated with the first liquid containing part 31b so as to flow the heat-exchange liquid flowing into the second liquid storage tank 8b into the first liquid containing part 31b. Therefore, the heat exchange liquid circulation process in the first liquid storage tank 3b can be conveniently completed, the temperature of the heat exchange liquid in the first liquid containing part 31b can be adjusted, the temperature of the heat exchange liquid before heat exchange is controllable, and the measurement of the heat index of the coal sample is more accurate.

The conventional oxygen bomb calorimeter cannot automatically recover to the temperature before testing after working. Due to the limited accuracy of dosing, changing the water in the tank results in a change in heat capacity, requiring repeated water changes within 1 day. The accumulative continuous measurement can also cause the temperature difference between the inner water tank and the outer water tank of the oxygen bomb calorimeter to be larger and larger, and the oxygen bomb calorimeter is separated from the working condition and cannot be continuously operated. The hydrophilic property of the surface of the oxygen bomb also causes the water quantity of a water tank in the calorimeter to be reduced and the metering is inaccurate when the oxygen bomb is replaced.

In some specific examples of the present disclosure, the water circulation process reduces the temperature difference between the second reservoir 8b and the first reservoir 3b to ensure the operating conditions require, active refrigeration ensures that the initial temperature is controlled within ± 1 ℃ per analysis. For example, there may be one temperature probe in each of the first tank 3b, the second tank 8b and the environment for confirming the operating condition. Because the pivot of stirring rake 5b and first liquid reserve tank 3b can't accomplish strictly sealed (sealed back, sealed pad and pivot frictional heating, heat production power is invariable, and unable accurate measurement causes the error), the liquid in first liquid reserve tank 3b can be along with evaporating and losing, causes the metering value to be on the high side.

After the temperature of the first tank 3b has risen (non-analytic state), a maintenance process is triggered. Can monitor ambient temperature, first liquid reserve tank 3b temperature, second liquid reserve tank 8b temperature in the maintenance process, start semiconductor refrigeration and circulating water pump and drop to near ambient temperature with whole temperature, the deviation is within 2 degrees. And closing the semiconductor refrigeration, and continuously circulating until the temperature difference between the second liquid storage tank 8b and the first liquid storage tank 3b is not more than 1 degree. When the circulating pump 6b is started, the water level in the first liquid storage tank 3b is fed back by the water level detector, and the insufficient part is filled by pumping liquid from the bottom liquid storage tank by the peristaltic pump, so that the amount of heat exchange liquid analyzed every time is ensured to be equal. A water level sensor is also arranged in the liquid storage tank at the bottom to ensure that liquid can be supplemented. The pumping end of the pumping pipe 61b of the circulation pump 6b is close to the bottom end of the first liquid containing portion 31b.

In some examples, the heat detecting device 100b may further include a separate life estimation code for counting the life of the consumable components such as the paddle 5b and the circulating pump 6b and prompting replacement when the life of the consumable components is close to the expected end.

According to some embodiments of the present disclosure, as shown in fig. 1 and 2, the second liquid storage tank 8b includes a second liquid containing portion 81b and a second hollow portion recessed upward from the bottom into the second liquid containing portion 81b, the second liquid containing portion 81b communicates with the refrigeration module 7b, the refrigeration module 7b inputs the heat-exchange liquid after refrigeration to the second liquid containing portion 81b, the second liquid containing portion 81b communicates with the first liquid containing portion 31b, and at least a portion of the first liquid storage tank 3b and the combustion device 1b are disposed in the second hollow portion. Thereby, the combustion apparatus 1b, the first reservoir 3b, and the second reservoir 8b can be made compact in layout, thereby reducing the volume of the heat detection device 100b.

In some embodiments of the present disclosure, as shown in fig. 1 and 2, the heat detecting apparatus 100b may further include a heat insulator 9b, and the heat insulator 9b is disposed in the second hollow portion and between the annular outer wall of the first liquid containing portion 31b and the annular inner wall of the second liquid containing portion 81 b. Therefore, on the premise of compact layout, the heat insulation member 9b can insulate at least part of heat flowing from the first liquid containing part 31b to the second liquid containing part 81b, and reduce heat loss in the first liquid containing part 31b, so that after the coal sample is completely combusted, the rising temperature of the heat-exchange liquid in the first liquid containing part 31b measured by the temperature measuring meter 2b is closer to the heat index of the coal sample.

According to some embodiments of the present disclosure, as shown in fig. 1 and 2, the heat detecting apparatus 100b may further include a support assembly 10b, the first reservoir 3b, the second reservoir 8b and the combustion device 1b are disposed on the support assembly 10b, the support assembly 10b has an air inlet 10221b, the air inlet 10221b is communicated with the combustion chamber 11b, and the gas required for the combustion of the coal sample enters the combustion chamber 11b through the air inlet 10221 b. From this, supporting component 10b can be convenient for first liquid reserve tank 3b, second liquid reserve tank 8b and burner 1 b's setting, and air inlet 10221b can be convenient for the required gas of coal sample burning and get into combustion chamber 11b, is favorable to the coal sample burning.

According to some embodiments of the present disclosure, as shown in fig. 1 and 2, the supporting assembly 10b includes a support frame 101b and a supporting base 102b, the supporting base 102b is disposed on the support frame 101b, the supporting base 102b includes a first supporting portion 1021b and a second supporting portion 1022b, a supporting surface of the second supporting portion 1022b is higher than a supporting surface of the first supporting portion 1021b, the second tank 8b and the first tank 3b are disposed on the first supporting portion 1021b, a portion of the second supporting portion 1022b extends into the second hollow portion, and a supporting surface of the second supporting portion 1022b is flush with a bottom of the first tank 3b, a bottom of the combustion apparatus 1b is disposed on a supporting surface of the second supporting portion 1022b, and a through hole is formed in the bottom of the combustion apparatus 1b and communicates with the air inlet 10221b of the second supporting portion 1022 b. It can be understood that, part of the second supporting portion 1022b extends into the second hollow portion, and the supporting surface of the second supporting portion 1022b is flush with the bottom of the first liquid storage tank 3b, so that the combustion chamber 11b is completely surrounded by the first liquid storage tank 3b, and the heat loss to the place outside the first liquid storage tank 3b can be reduced, so that the measurement of the heat index is more accurate.

According to some embodiments of the present disclosure, as shown in fig. 2, the heat detecting apparatus 100b may further include an elastic member 30b, a tray 40b, a dust cover 50b, and a laser tube 60b. The elastic member 30b is disposed on the second supporting portion 1022b; the tray 40b is arranged on the elastic piece 30b, and the crucible 100d bearing the coal sample is suitable for being placed in the tray 40 b; when the dust cover 50b is covered on the crucible 100d, the elastic member 30b is in a compressed state; one end of the laser tube 60b is disposed in the crucible 100d and faces the coal sample, and the other end of the laser tube 60b passes through the dust cap 50b and faces the irradiation port. Thus, the force transmitted to the crucible 100d when the elastic member 30b is in the compressed state enables the crucible 100d to be well attached to the dust cover 50b, thereby enhancing the dust-proof effect of the dust cover 50 b. The laser tube 60b can direct the laser beam emitted by the pilot laser 20b to the coal sample so that the dust cover 50b is provided to prevent dust while not preventing the pilot laser 20b from igniting the coal sample.

According to some embodiments of the present disclosure, as shown in fig. 1, the heat detecting apparatus 100b further includes a driving member 70b and a transmission member 80b, one end of the transmission member 80b is connected to the driving member 70b, the other end of the transmission member 80b is connected to the second liquid storage tank 8b, and the driving member 70b is adapted to drive the transmission member 80b to drive the second liquid storage tank 8b, and the first liquid storage tank 3b and the combustion device 1b disposed in the second hollow portion to be separated from and connected to the supporting seat 102 b.

Therefore, when the second liquid storage tank 8b, the first liquid storage tank 3b and the combustion device 1b which are arranged in the second hollow part are separated from the supporting seat 102b, the crucible 100d bearing the coal sample can be conveniently placed on the tray 40b, and the crucible 100d after the experiment is finished can be conveniently taken away from the tray 40 b; when the second liquid storage tank 8b, the first liquid storage tank 3b and the combustion device 1b which are arranged in the second hollow portion are connected with the supporting seat 102b, the experimental environment can be ensured, so that the crucible 100d bearing the coal sample can conveniently complete the experiment in the combustion chamber 11b. The driving member 70b and the driving member g0b may facilitate the separation and connection of the second tank 8b and the first tank 3b and the combustion apparatus 1b, which are disposed in the second hollow portion, from the support base 102 b.

According to some embodiments of the present disclosure, as shown in fig. 2 and 3, the heat detecting device 100b further includes a glass cover plate 90b and a detector 110b. The glass cover plate 90b is obliquely arranged at the irradiation port to seal the irradiation port, and laser emitted by the ignition laser 20b penetrates through the glass cover plate 90b to irradiate the coal sample; the detector 110b is horizontal to the glass cover plate 90b and is disposed opposite to the irradiation surface of the glass cover plate 90 b. It should be noted that, in order to ensure that the ignition energy of the coal sample in the heat detecting device 100b can be measured each time, an inclined glass cover plate 90b is disposed at the irradiation port, for example, the glass cover plate 90b can be inclined by 45 degrees, and 45 degrees is only an example and is not to be construed as a limitation of the present disclosure, and the laser light irradiated by the ignition laser 20b passes through the glass cover plate 90b which forms an angle of 45 degrees with the horizontal plane to reach the surface of the coal sample to ignite the coal sample. The laser light is partially reflected as it passes through the interface between the glass cover plate 90b and the air, and the intensity of the reflected light is proportional to the transmitted intensity. The detector 110b used at this time may be, for example, a photodetector, and the power of the reflected light is counted and integrated over time, and the non-combustion heat introduced by the laser in the whole analysis process can be obtained after conversion, and can be accurately subtracted in the final heat calculation.

The method can avoid the inconsistent output energy caused by the light attenuation of the ignition laser 20b and the change of the ambient temperature, can avoid repeated calibration when the heat detection equipment 100b is stable, and is favorable for automatic realization. The glass cover 90b functions to protect the ignition laser 20b lens assembly from soot absorption, in addition to reflecting a portion of the laser light for energy detection. The reflectivity of the glass cover plate 90b can be adjusted by coating. When the non-coated glass is used, the reflectivity of the glass can reach about 10 percent. At this time, the reflected power of 5W laser can reach about 500 mW.

In some specific embodiments, the detector 110b is in communication connection with the control module 140b, the detector 110b transmits the ignition energy signal of the coal sample to the control module 140b, and the control module 140b can subtract the ignition energy of the coal sample when calculating the heat of the coal sample, thereby further improving the automation degree of the heat detecting apparatus 100b of the present disclosure.

According to some embodiments of the present disclosure, as shown in fig. 3, an attenuator 120b and a baffle 130b with an aperture are disposed between the glass cover plate 90b and the detector 110b, and the glass cover plate 90b, the attenuator 120b, the baffle 130b, and the detector 110b are disposed in this order. Since the high-sensitivity detector 110b operates in a non-linear range, accurate energy statistics are not facilitated. At this time, by arranging the attenuator 120b and the baffle 130b with the small hole between the glass cover plate 90b and the detector 110b, the power statistics of the reflected light by the detector 110b can be more accurate, and the non-combustion heat introduced by the laser can be more accurately calculated, so that the heat measurement of the coal sample by the heat detection device 100b is more accurate. For example, the attenuator 120b may be made of neutral gray glass, polarizer, concave lens and pinhole, and all inner walls of the whole optical chamber need to be blackened and matte to avoid statistical errors caused by reflection.

According to some embodiments of the present disclosure, as shown in fig. 3, the foraminous baffle 130b is a plurality of spaced apart. Thus, the power statistics of the reflected light by the detector 110b can be further made more accurate.

As shown in fig. 4, the coal quality analyzing system 1000 according to the embodiment of the present disclosure includes M heating furnaces 100a, a heat detecting apparatus 100b, and a rack 100e.

Wherein the heat detecting apparatus 100b is the heat detecting apparatus 100b according to the above. Each furnace 100a is configured to measure at least one coal quality indicator, M being an integer greater than or equal to 1, it being understood that the coal quality indicator may include, but is not limited to, moisture, ash, volatiles, sulfur, and the like. Where M may be 1, one heating furnace 100a may be used to measure any one of moisture, ash, volatiles, and sulfur, or one heating furnace 100a may be used to measure both moisture and volatiles, or one heating furnace 100a may be used to measure both ash and sulfur; here, M may also be 2, and two heating furnaces 100a may be used to measure any two of moisture, ash, volatiles, and sulfur, or one heating furnace 100a may be used to measure moisture and volatiles simultaneously, and the other heating furnace 100a may be used to measure ash and sulfur simultaneously; here, M may also be 3, and the three heating furnaces 100a may be used to measure any three of moisture, ash, volatiles, and sulfur, respectively; of course, M may also be 4, 5, or 6, etc., and is only for illustration and should not be construed as limiting the disclosure. Hereinafter, an example will be described in which M is 2, one heating furnace 100a is used for simultaneous measurement of moisture and volatile matter, and the other heating furnace 100a is used for simultaneous measurement of ash and sulfur.

The principle of measuring the moisture is as follows: weighing a certain amount of coal sample for general analysis experiment, drying the coal sample in a heating furnace at 105-110 ℃ in air or nitrogen flow until the mass is constant, and calculating the moisture mass fraction of the coal sample according to the mass loss of the coal sample.

The principle of volatile component determination is as follows: weighing a certain amount of coal sample for general analysis experiment, heating in a heating furnace at 900 +/-10 deg.C for 7min to reduce the mass fraction of water in the coal sample, and subtracting the water mass fraction of the coal sample to obtain the volatile mass fraction of the coal sample.

In some specific examples, each heating furnace 100a includes a furnace body, a heating device, a mass measurement device, and a control assembly. The furnace body is provided with a heating cavity, a crucible for bearing the coal sample is suitable for being placed in the heating cavity, the heating cavity is provided with a vent, and gas required for measuring the corresponding coal quality index enters the heating cavity through the vent; the heating device is arranged in the heating cavity to heat the coal sample; a portion of the mass measuring device extends into the heating chamber to measure the mass of the crucible carrying the coal sample in real time and generate a mass signal.

It can be understood that when the heating furnace 100a is required to measure moisture and volatile matter, nitrogen can be introduced into the vent, the control component is in communication connection with the quality measuring device, the quality measuring device can measure the mass of the crucible carrying the coal sample before heating and generate a quality signal to be transmitted to the control component, the heating device heats the coal sample to 105-110 ℃, and when the coal sample is dried to be constant in mass, the quality measuring device can measure the mass of the crucible carrying the coal sample at the moment and generate a quality signal to be transmitted to the control component, and the control component can calculate the mass loss through the mass of the crucible carrying the coal sample before heating and the mass of the crucible carrying the coal sample at the moment, so as to calculate the moisture mass fraction of the coal sample.

The heating device continuously heats the coal sample to (900 +/-10) DEG C, after heating for 7min, the quality measuring device can measure the quality of the crucible bearing the coal sample at the moment and generate a quality signal to be transmitted to the control component, and the control component can subtract the moisture quality fraction of the coal sample from the mass fraction of the reduced quality in the coal sample to obtain the volatile component mass fraction of the coal sample.

The measurement of the volatile components and sulfur in the heating furnace 100a is the same, and will not be described in detail.

The object carrier 100e comprises an equipment bin 1e and an electrical appliance bin 2e, the M heating furnaces 100a and the heat detection equipment 100b are arranged in the equipment bin 1e, and the control module 140b is arranged in the electrical appliance bin 2e. Therefore, the M heating furnaces 100a, the heat detection devices 100b and the control modules 140b can be placed in functional partitions, so that the M heating furnaces 100a, the heat detection devices 100b and the control modules 140b are arranged orderly and do not interfere with each other.

According to the coal quality analysis system 1000 of the embodiment of the disclosure, by integrating the M heating furnaces 100a and the heat detection devices 100b, and by enabling the control component to analyze the quality signals of the heating furnaces 100a, and by enabling the control module 140b to analyze the temperature signals of the heat detection devices 100b, one person can operate the coal quality analysis system 1000, the measured data is automatically uploaded, and the comprehensive data of the coal quality index and the heat index can be obtained through automatic analysis. Therefore, the coal quality analysis system 1000 is high in integration level and good in convenience, and manpower and material resources are saved in the using process.

In the description of the present disclosure, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the disclosure and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the disclosure. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present disclosure, "a plurality" means two or more unless otherwise specified.

In the description of the present disclosure, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present disclosure can be understood in specific instances by those of ordinary skill in the art.

In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present disclosure have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the disclosure, the scope of which is defined by the claims and their equivalents.

Those skilled in the art will appreciate that various combinations and/or combinations of features recited in the various embodiments and/or claims of the present disclosure can be made, even if such combinations or combinations are not expressly recited in the present disclosure. In particular, various combinations and/or combinations of the features recited in the various embodiments and/or claims of the present disclosure may be made without departing from the spirit or teaching of the present disclosure. All such combinations and/or associations are within the scope of the present disclosure.

While the disclosure has been shown and described with reference to certain exemplary embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the disclosure as defined by the appended claims and their equivalents. Accordingly, the scope of the present disclosure should not be limited to the above-described embodiments, but should be defined not only by the appended claims, but also by equivalents thereof.

Claims (12)

1. A heat detection apparatus for measuring a heat index of coal, comprising:

the combustion device is provided with a combustion cavity, the combustion cavity is provided with an irradiation port, and a crucible for bearing a coal sample is placed in the combustion cavity;

the ignition laser is arranged above the combustion device and emits laser to the coal sample in the combustion cavity through the irradiation port of the combustion cavity so as to ignite the coal sample;

the temperature measuring meter is used for detecting the temperature of a heat exchange medium exchanging heat with the heat in the combustion cavity and generating a temperature signal;

a control module in communication with the temperature gauge to receive the temperature signal.

2. The heat sensing device of claim 1, further comprising a first tank surrounding the combustion chamber, wherein a heat-exchange liquid is introduced into the first tank, and wherein a probe of the temperature meter is disposed in the first tank to measure the temperature of the heat-exchange liquid in the first tank in real time and generate a temperature signal.

3. The heat detecting apparatus according to claim 2, wherein the first liquid storage tank is an annular liquid storage tank, the first liquid storage tank includes a first liquid containing portion and a first hollow portion, a heat exchange liquid is introduced into the first liquid containing portion, at least a portion of the combustion device is disposed in the first hollow portion,

the heat detection equipment further comprises a heat exchange tube, the heat exchange tube is arranged in the first liquid containing part, one end of the heat exchange tube is communicated with the combustion cavity, and the other end of the heat exchange tube is communicated with the external environment.

4. The heat detecting apparatus according to claim 3, further comprising a paddle rotatably provided in the first liquid containing portion.

5. The heat detecting apparatus according to claim 3, further comprising:

the circulating pump is communicated with the first liquid containing part;

the refrigeration module is communicated with the circulating pump, and the circulating pump pumps the heat exchange liquid in the first liquid containing part to the refrigeration module;

the second liquid storage tank is communicated with the refrigeration module, the refrigeration module inputs the refrigerated heat exchange liquid into the second liquid storage tank, and the second liquid storage tank is communicated with the first liquid containing part so as to flow the heat exchange liquid flowing into the second liquid storage tank into the first liquid containing part.

6. The heat detecting apparatus according to claim 5, wherein the second liquid storage tank includes a second liquid containing portion and a second hollow portion recessed upward from a bottom of the second liquid containing portion, the second liquid containing portion communicates with the refrigerating module, the refrigerating module inputs the heat-exchange liquid after refrigeration to the second liquid containing portion, the second liquid containing portion communicates with the first liquid containing portion, and at least a part of the first liquid storage tank and the combustion device are disposed in the second hollow portion.

7. The heat detecting apparatus according to claim 6, further comprising a heat insulating member provided in the second hollow portion between the annular outer wall of the first liquid containing portion and the annular inner wall of the second liquid containing portion.

8. The heat detecting apparatus according to claim 6, further comprising a support assembly, wherein the first reservoir, the second reservoir and the combustion device are disposed on the support assembly, the support assembly has an air inlet, the air inlet is communicated with the combustion chamber, and a gas required for combustion of the coal sample enters the combustion chamber through the air inlet.

9. The heat sensing device of claim 8, wherein the support assembly comprises:

a support;

the supporting seat, the supporting seat is located the support, the supporting seat includes first supporting part and second supporting part, the holding surface of second supporting part is higher than the holding surface of first supporting part, the second liquid reserve tank with first liquid reserve tank is located first supporting part, the part of second supporting part stretches into well kenozooecium in the second, just the holding surface of second supporting part with the bottom parallel and level of first liquid reserve tank, burner's bottom is located on the holding surface of second supporting part, burner's bottom has the through hole, the through hole with the second supporting part the air inlet intercommunication.

10. The heat detecting apparatus according to claim 9, further comprising:

the elastic piece is arranged on the second supporting part;

the tray is arranged on the elastic piece, and the crucible for bearing the coal sample is suitable for being placed in the tray;

a dust cover, wherein when the dust cover is covered on the crucible, the elastic member is in a compressed state;

and one end of the laser tube is arranged on the crucible and is opposite to the coal sample, and the other end of the laser tube penetrates through the dust cover and is opposite to the irradiation port.

11. The heat detecting apparatus according to claim 9, further comprising a driving member and a driving member, wherein one end of the driving member is connected to the driving member, and the other end of the driving member is connected to the second liquid storage tank, and the driving member is adapted to drive the driving member to drive the second liquid storage tank and the first liquid storage tank and the combustion device disposed in the second hollow portion to be separated from and connected to the supporting base.

12. The heat detecting device according to any one of claims 1 to 11, characterized by further comprising:

the glass cover plate is obliquely arranged on the irradiation port to seal the irradiation port, and laser emitted by the ignition laser penetrates through the glass cover plate to irradiate the coal sample;

and the detector is horizontal to the glass cover plate and is opposite to the irradiation surface of the glass cover plate.

Images