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

Background technique

With the development of industrialization, coal energy is becoming more and more scarce. In order to obtain higher combustion efficiency, it is necessary to measure the heat index of coal to make full use of coal energy. Oxygen bomb calorimeters in the prior art use heating wires or cotton threads as ignition substances, and the unstable combustion heat background needs to be deducted in the final calorie measurement. In addition, when multiple samples are measured, the oxygen bomb needs to be replaced. Different oxygen bombs have inconsistent thermal resistance due to manufacturing differences, resulting in differences in the measurement time of samples measured with different oxygen bombs, resulting in differences in heat dissipation time. In addition, the errors after calibration of different oxygen bombs are inconsistent, resulting in inconsistent measurement errors between samples, making thermal analysis difficult and reducing accuracy.

Contents of the invention

In order to solve the above-mentioned problems in the prior art, an embodiment of the present disclosure proposes a heat detection device, which has the advantages of convenient experimentation and accurate results.

One aspect of the present disclosure provides a heat detection device for measuring the heat index of coal. The heat detection device includes a combustion device, an ignition laser, a temperature gauge and a control module. The combustion device has a combustion chamber, and the combustion The cavity is provided with an irradiation port, and the crucible for carrying coal samples is suitable for placing in the combustion cavity; The sample emits laser light to ignite the coal sample; the temperature measuring instrument is used to detect the temperature of the heat exchange medium that exchanges heat with the heat in the combustion chamber, and generates a temperature signal; the control module and the temperature measurement Meter communication connection to receive the temperature signal.

According to the heat detection equipment of the embodiment of the present disclosure, setting the ignition laser can facilitate the ignition of the coal sample. Since the heat of the ignition laser is relatively stable, the heat that needs to be deducted in the final heat measurement is easy to measure, so that the calculation of the heat index is more accurate. . Moreover, when coal samples are measured for many times, there is no need to replace the ignition laser, so that the measurement time and heat dissipation time of different coal samples are the same, which is conducive to the smooth progress of the experiment. Since there is no need to replace the ignition laser, the heat error introduced each time is consistent, resulting in consistent measurement errors between samples, which is convenient for thermal analysis and has high accuracy of results.

In some embodiments, the heat detection device further includes a first liquid storage tank, the first liquid storage tank surrounds the combustion chamber, and a heat exchange liquid is passed into the first liquid storage tank, so that The probe of the temperature measuring meter is set 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, the first liquid storage tank includes a first liquid storage part and a first hollow part, and the heat exchange Liquid, at least part of the combustion device is set in the first hollow part, the heat detection device also includes a heat exchange tube, the heat exchange tube is set in the first liquid containing part, the heat exchange tube One end communicates with the combustion chamber, and the other end of the heat exchange tube communicates with the external environment.

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

In some embodiments, the heat detection device further includes: a circulation pump, the circulation pump communicates with the first liquid containing part; a refrigeration module, the refrigeration module communicates with the circulation pump, and the circulation pump The heat exchange liquid in the first liquid storage part is pumped to the refrigeration module; the second liquid storage tank is connected to the refrigeration module, and the refrigeration module stores the cooled exchange The hot liquid is input into the second liquid storage tank, and the second liquid storage tank communicates with the first liquid storage part, so that the heat exchange liquid flowing into the second liquid storage tank flows into the first liquid storage part department.

In some embodiments, the second liquid storage tank includes a second liquid storage part and a second hollow part recessed upward from the bottom into the second liquid storage part, and the second liquid storage part is connected to the refrigeration module connected, the refrigeration module inputs the refrigerated heat exchange liquid to the second liquid storage part, the second liquid storage part communicates with the first liquid storage part, and the first liquid storage tank and the At least part of the combustion device is provided in the second hollow portion.

In some embodiments, the heat detection device further includes a heat insulating element, the heat insulating element is arranged in the second hollow part, and is located between the annular outer wall of the first liquid containing part and the second liquid containing part. between the annular inner walls of the

In some embodiments, the heat detection device further includes a support assembly, the first liquid storage tank, the second liquid storage tank and the combustion device are arranged on the support assembly, and the support assembly has an air intake The air inlet communicates with the combustion chamber, and the gas required for coal sample combustion enters the combustion chamber through the air inlet.

In some embodiments, the support assembly includes: a bracket; a support base, the support base is arranged on the bracket, the support base includes a first support part and a second support part, and the support of the second support part The surface is higher than the support surface of the first support part, the second liquid storage tank and the first liquid storage tank are arranged on the first support part, and part of the second support part extends into the first support part. Two hollow parts, and the support surface of the second support part is flush with the bottom of the first liquid storage tank, the bottom of the combustion device is set on the support surface of the second support part, and the combustion device There is a through-hole at the bottom of the body, and the through-hole communicates with the air inlet of the second support part.

In some embodiments, the heat detection device further includes: an elastic member, the elastic member is arranged on the second supporting part; a tray, the tray is arranged on the elastic member, and the crucible carrying the coal sample is suitable for placing In the tray; a dust cover, when the dust cover is set on the crucible, the elastic member is in a compressed state; a laser tube, one end of the laser tube is set on the crucible and connected to the coal The other end of the laser tube passes through the dust cover and faces the irradiation port.

In some embodiments, the heat detection device further includes a driving element and a transmission element, one end of the transmission element is connected to the driving element, and the other end of the transmission element is connected to the second liquid storage tank, so The driving member is suitable for driving the transmission member to drive the second liquid storage tank, the first liquid storage tank and the combustion device disposed in the second hollow part to separate from and connect to the support base.

In some embodiments, the heat detection device further includes: a glass cover, the glass cover is obliquely arranged on the irradiation opening to block the irradiation opening, the laser light emitted by the ignition laser passes through the The glass cover plate is irradiated on the coal sample; the detector is horizontal to the glass cover plate and set opposite to the irradiated 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.

Description of drawings

For a more complete understanding of the present disclosure and its advantages, reference should now be made to the following description taken in conjunction with the accompanying drawings, in which:

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

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

3 is a schematic diagram of partial reflection of laser light passing through an interface between a glass cover and air according to 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 signs:

Coal quality analysis system 1000, crucible 100d,

heat detection device 100b,

Combustion device 1b, combustion chamber 11b,

Temperature measuring gauge 2b, first liquid storage tank 3b, first liquid containing part 3lb,

Heat exchange tube 4b, stirring paddle 5b, circulation pump 6b, water suction pipe 6lb, refrigeration module 7b, second liquid storage tank 8b, second liquid containing part 8lb, heat insulation 9b,

Support assembly l0b, bracket l0lb, support seat 102b, first support portion 1021b, second support portion 1022b, air inlet 10221b,

Ignition laser 20b, elastic member 30b, tray 40b, dust cover 50b, laser tube 60b,

Drive 70b, transmission 80b, glass cover 90b, detector 110b, attenuator 120b, baffle 130b, control module 140b,

Heating furnace l00a, carrier 100e, equipment warehouse 1e, electrical warehouse 2e.

Detailed ways

Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. It should be understood, however, that these descriptions are exemplary only, and are not intended to limit the scope of the present disclosure. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present disclosure. In addition, the various embodiments provided below in the present disclosure and the technical features in the embodiments can 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 present disclosure. In addition, the terms "comprising", "comprising", etc. used herein indicate the existence of stated features, steps, operations and/or components, but do not exclude the existence or addition of one or more other features, steps, operations or components . All terms (including technical and scientific terms) used herein have the meaning commonly understood by one of ordinary skill in the art, unless otherwise defined. It should be noted that the terms used herein should be interpreted to have a meaning consistent with the context of this specification, and not be interpreted in an idealized or overly rigid manner.

With the development of industrialization, coal energy is becoming more and more scarce. In order to obtain higher combustion efficiency, it is necessary to measure the heat index of coal to make full use of coal energy. Oxygen bomb calorimeters in the prior art use heating wires or cotton threads as ignition substances, and the unstable combustion heat background needs to be deducted in the final calorie measurement. In addition, when multiple samples are measured, the oxygen bomb needs to be replaced. Different oxygen bombs have inconsistent thermal resistance due to manufacturing differences, resulting in differences in the measurement time of samples measured with different oxygen bombs, resulting in differences in heat dissipation time. In addition, the errors after calibration of different oxygen bombs are inconsistent, resulting in inconsistent measurement errors between samples, making thermal analysis difficult and reducing accuracy.

The following describes a heat detection device 100b and a coal quality analysis system 1000 according to an embodiment of the present disclosure with reference to FIGS. 1-4 .

As shown in Figures 1-3, a heat detection device 100b according to an embodiment of the present disclosure is used to measure the heat index of coal, and the heat detection device 100b may include a combustion device 1b, an ignition laser 20b, a thermometer 2b and a control module 140b. The combustion device 1b has a combustion chamber 11b, and the combustion chamber 11b is provided with an irradiation port, and the combustion chamber 11b is suitable for placing a crucible 100d carrying a coal sample; an ignition laser 20b is arranged above the combustion device 1b, and passes through the irradiation port of the combustion chamber 11b to The coal sample in the combustion chamber 11b emits laser light to ignite the coal sample; the thermometer 2b is used to detect the temperature of the heat exchange medium that exchanges heat with the heat in the combustion chamber 11b, and generates a temperature signal. The thermometer 2b and The control module 140b is connected in communication.

Among them, setting the ignition laser 20b can facilitate the ignition of the coal sample, the temperature measuring instrument 2b can measure the temperature of the heat exchange medium before the coal sample is burned, and generate a temperature signal and transmit it to the control module 140b, and the temperature measuring instrument 2b can measure the temperature of the coal sample burning The temperature of the heat exchange medium after burning, and generate a temperature signal and transmit it to the control module 140b. The control module 140b is based on the temperature of the heat exchange medium before coal sample combustion, the temperature of the heat exchange medium after coal sample combustion, and the The heat can be used to calculate the heat index of coal.

In addition, the ignition of the coal sample is completed using the ignition laser 20b, which has good repeatability and does not require maintenance. In some experimental data, calculated on the basis of 80% light decay (the lifetime characteristics of the ignition laser 20b), a single analysis of ignition for 5 minutes can be used more than 38,000 times. Based on 32 samples/day, it can be used for more than 1200 days. When the allowable error is 1%, it is enough to use the standard sample to calibrate once a week until the laser energy cannot ignite the coal sample. The above experimental data are for illustration only, and should not be construed as limiting the present disclosure.

According to the calorie detection device 100b of the embodiment of the present disclosure, the coal sample can be easily ignited by setting the ignition laser 20b. Since the heat of the ignition laser 20b is relatively stable, the heat that needs to be deducted in the final calorie measurement is easy to measure, so that the calorie index The calculation is more accurate. Moreover, when coal samples are measured for many times, there is no need to replace the ignition laser 20b, so that the measurement time and heat dissipation time of different coal samples are the same, which is conducive to the smooth progress of the experiment. Since there is no need to replace the ignition laser 20b, the heat error introduced each time is consistent, resulting in consistent measurement errors between samples, which is convenient for heat analysis and has high accuracy of results.

According to some embodiments of the present disclosure, as shown in FIG. 1 and FIG. 2 , the heat detection device 100b may further include a first liquid storage tank 3b, the first liquid storage tank 3b is arranged outside the combustion chamber 11b, and the first liquid storage tank The heat exchange liquid is passed into 3b, and the probe of the thermometer 2b is set 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. Thus, the heat of the coal sample burned in the combustion chamber 11b can be transferred to the heat exchange liquid, and the temperature measuring instrument 2b can measure the temperature of the heat exchange liquid in real time and transmit the temperature signal to the control module 140b. The heat index of the coal sample can be obtained from the temperature of the heat exchange liquid 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, and the first liquid storage tank 3b includes a first liquid containing part 31b and a first hollow part, and the first containing The heat exchange liquid is passed into the liquid part 31b, at least a part of the combustion device 1b is arranged in the first hollow part, and the heat detection device 100b also includes a heat exchange tube 4b, and the heat exchange tube 4b is arranged in the first liquid containing part 31b for heat exchange. One end of the tube 4b communicates with the combustion chamber 11b, and the other end of the heat exchange tube 4b communicates with the external environment. Here, the inner ring wall surface of the first liquid storage tank 3b and the wall surface of the portion of the combustion device 1b provided in the first hollow portion may be the same wall surface or may be different wall surfaces. When the inner ring wall surface of the first liquid storage tank 3b is the same wall surface as the wall surface of the portion of the combustion device 1b disposed in the first hollow portion, it means that at least part of the combustion device 1b sinks into the heat exchange liquid.

Thus, the heat of burning coal samples in the combustion chamber 11b can enter the heat exchange tube 4b, and the heat can be exchanged into the heat exchange liquid through the heat exchange tube 4b, and the temperature measuring instrument 2b can measure the temperature of the heat exchange liquid in real time and set the temperature The signal is transmitted 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. Wherein, the first hollow part of the second liquid storage tank 8b can facilitate the installation of at least part of the combustion device 1b, and facilitate heat exchange from the combustion chamber 11b to the heat exchange liquid in the first liquid storage part 31b.

According to some embodiments of the present disclosure, as shown in FIG. 2 , the heat detection device 100b further includes a stirring paddle 5b, which is rotatably disposed in the first liquid containing portion 31b. Thus, the stirring paddle 5b can even out 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 FIG. 2 , the heat detection device 100b further includes a circulation pump 6b, a refrigeration module 7b and a second liquid storage tank 8b. The circulation pump 6b communicates with the first liquid storage part 31b; the refrigeration module 7b communicates with the circulation pump 6b, and the circulation pump 6b pumps the heat exchange liquid in the first liquid storage part 31b to the refrigeration module 7b; the second liquid storage tank 8b communicates with the refrigeration module 7b. The module 7b is connected, and the refrigeration module 7b inputs the refrigerated heat exchange liquid to the second liquid storage tank 8b, and the second liquid storage tank 8b communicates with the first liquid storage part 31b to transfer the heat exchange fluid flowing into the second liquid storage tank 8b. The liquid flows into the first liquid containing portion 31b. This can facilitate the completion of the heat exchange liquid circulation process in the first liquid storage tank 3b, so that the temperature of the heat exchange liquid in the first liquid storage part 31b can be adjusted, so that the temperature of the heat exchange liquid before heat exchange can be controlled, thereby It makes the measurement of the heat index of the coal sample more accurate.

However, the existing oxygen bomb calorimeter cannot automatically return to the temperature before the test after working. Due to the limitation of the quantitative accuracy of adding water, changing the water in the water tank will cause the heat capacity to change, and it is necessary to repeat the water changing calibration within 1 day. Accumulative continuous measurement will also lead to an increasing temperature difference between the inner water tank and the outer water tank of the oxygen bomb calorimeter, which is out of working condition and cannot operate continuously. The hydrophilic nature of the surface of the oxygen bomb also causes the water volume in the water tank in the calorimeter to drop when the oxygen bomb is replaced, resulting in inaccurate measurement.

In some specific examples of the present disclosure, the water circulation process reduces the temperature difference between the second liquid storage tank 8b and the first liquid storage tank 3b to ensure the working conditions, and active refrigeration ensures that the initial temperature of each analysis is controlled within ±1°C within range. For example, there may be a temperature probe in the first liquid storage tank 3b, in the second liquid storage tank 8b and in the environment for confirming the working conditions. Since the rotating shaft of the stirring paddle 5b and the first liquid storage tank 3b cannot be strictly sealed (after sealing, the sealing pad and the rotating shaft generate heat due to friction, the heat production power is not constant, and errors cannot be accurately measured), the first liquid storage tank 3b The liquid will be lost with evaporation, resulting in high metered value.

After the temperature of the first liquid storage tank 3b rises (non-analysis state), the maintenance process is triggered. During the maintenance process, the ambient temperature, the temperature of the first liquid storage tank 3b, and the temperature of the second liquid storage tank 8b will be monitored, and the semiconductor refrigeration and circulating water pump will be started to reduce the overall temperature to around the ambient temperature, with a deviation within 2 degrees. Turn off the semiconductor refrigeration again, and continue to circulate until the temperature difference between the second liquid storage tank 8b and the first liquid storage tank 3b is not greater than 1 degree. When the circulation 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 made up by the liquid drawn from the bottom liquid storage tank by the peristaltic pump to ensure that the amount of heat exchange liquid analyzed each time is equal. There is also a water level sensor in the bottom reservoir to ensure there is fluid to replenish. The suction end of the water suction pipe 61b of the circulation pump 6b is close to the bottom end of the first liquid containing part 31b.

In some examples, the heat detection device 100b may also include an independent life measurement code to count the life of consumable components such as the stirring paddle 5b and the circulation pump 6b, and remind them to replace them when their life is approaching the expected end.

According to some embodiments of the present disclosure, as shown in FIG. 1 and FIG. 2 , the second liquid storage tank 8b includes a second liquid storage part 81b and a second hollow part upwardly recessed from the bottom into the second liquid storage part 81b. The liquid storage part 81b communicates with the refrigeration module 7b, the refrigeration module 7b inputs the refrigerated heat exchange liquid to the second liquid storage part 81b, the second liquid storage part 81b communicates with the first liquid storage part 31b, and the first liquid storage tank 3b And at least part of the combustion device 1b is provided in the second hollow portion. Thus, the layout of the combustion device 1b, the first liquid storage tank 3b and the second liquid storage tank 8b can be made compact, thereby reducing the volume of the heat detection device 100b.

In some embodiments of the present disclosure, as shown in FIG. 1 and FIG. 2 , the heat detection device 100b may further include a heat insulating member 9b, which is arranged in the second hollow part and located at the bottom of the first liquid containing part 31b. Between the annular outer wall and the annular inner wall of the second liquid containing portion 81b. Therefore, under the premise of a compact layout, the heat insulating member 9b can isolate at least part of the heat flowing from the first liquid containing part 31b to the second liquid containing part 81b, reducing the heat loss in the first liquid containing part 31b, so that the coal sample is completely After combustion, the elevated temperature of the heat exchange liquid in the first liquid containing part 31b measured by the temperature measuring instrument 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 FIG. 2 , the heat detection device 100b may further include a support assembly 10b, and the first liquid storage tank 3b, the second liquid storage tank 8b and the combustion device 1b are arranged on the support assembly 10b. The support assembly 10b has an air inlet 10221b, and the air inlet 10221b communicates with the combustion chamber 11b, and the gas required for coal sample combustion enters the combustion chamber 11b through the air inlet 10221b. Thus, the support assembly 10b can facilitate the setting of the first liquid storage tank 3b, the second liquid storage tank 8b and the combustion device 1b, and the air inlet 10221b can facilitate the gas required for coal sample combustion to enter the combustion chamber 11b, which is beneficial to the coal sample combustion .

According to some embodiments of the present disclosure, as shown in FIG. 1 and FIG. 2 , the support assembly 10b includes a bracket 101b and a support base 102b, the support base 102b is arranged on the bracket 101b, and the support base 102b includes a first support portion 1021b and a second support portion 1022b, the supporting surface of the second supporting part 1022b is higher than the supporting surface of the first supporting part 1021b, the second liquid storage tank 8b and the first liquid storage tank 3b are arranged on the first supporting part 1021b, and part of the second supporting part 1022b extends into the second hollow part, and the supporting surface of the second supporting part 1022b is flush with the bottom of the first liquid storage tank 3b, the bottom of the burning device 1b is arranged on the supporting surface of the second supporting part 1022b, and the bottom of the burning device 1b has The through opening communicates with the air inlet 10221b of the second support portion 1022b. It can be understood that part of the second support part 1022b extends into the second hollow part, and the support surface of the second support part 1022b is flush with the bottom of the first liquid storage tank 3b, so that the combustion chamber 11b can be completely covered by the first storage tank 3b. Surrounded by the liquid tank 3b, the loss of heat to places other than the first liquid storage tank 3b can be reduced, making the measurement of the heat index more accurate.

According to some embodiments of the present disclosure, as shown in FIG. 2 , the heat detection device 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 arranged on the second supporting part 1022b; the tray 40b is arranged on the elastic member 30b, and the crucible 100d carrying the coal sample is suitable for being placed in the tray 40b; when the dustproof cover 50b is set on the crucible 100d, the elastic member 30b is in Compressed state: one end of the laser tube 60b is set on the crucible 100d and faces the coal sample, and the other end of the laser tube 60b passes through the dust cover 50b and faces the irradiation port. Thus, the force transmitted to the crucible 100d when the elastic member 30b is in a compressed state enables the crucible 100d to fit well with the dustproof cover 50b, thereby enhancing the dustproof effect of the dustproof cover 50b. The laser tube 60b can guide the laser beam irradiated by the ignition laser 20b to the coal sample, so that the dustproof cover 50b is set to prevent dust while not hindering the ignition of the coal sample by the ignition laser 20b.

According to some embodiments of the present disclosure, as shown in FIG. 1 , the heat detection device 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, and the other end of the transmission member 80b is connected to the second liquid storage The tank 8b is connected, and the driving member 70b is adapted to drive the transmission member 80b to separate and connect 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 the support seat 102b.

Thus, when the second liquid storage tank 8b, the first liquid storage tank 3b and the combustion device 1b disposed in the second hollow part are separated from the support base 102b, it is convenient to place the crucible 100d carrying the coal sample on the tray 40b, It is also convenient to take away the crucible 100d completed by the experiment from the tray 40b; when the second liquid storage tank 8b and the first liquid storage tank 3b and the combustion device 1b located in the second hollow part are connected with the support seat 102b, it can be ensured The experimental environment makes the crucible 100d carrying the coal sample complete the experiment in the combustion chamber 11b. The driving member 70b and the transmission member g0b can facilitate the separation and connection of the second liquid storage tank 8b, the first liquid storage tank 3b and the combustion device 1b disposed in the second hollow portion, and the support seat 102b.

According to some embodiments of the present disclosure, as shown in FIGS. 2 and 3 , the heat detection device 100b further includes a glass cover 90b and a detector 110b. The glass cover plate 90b is obliquely arranged at the irradiation port to block the irradiation port, and the laser light emitted by the ignition laser 20b is irradiated on the coal sample through the glass cover plate 90b; the detector 110b is horizontal to the glass cover plate 90b, and The irradiated surfaces are set opposite to each other. It should be noted that, in order to ensure that the ignition energy of the coal sample in the heat detection device 100b can be measured each time, an inclined glass cover plate 90b is arranged at the irradiation port. For example, the glass cover plate 90b can be inclined at 45°, which is only As an example, which should not be construed as a limitation to the present disclosure, the laser irradiated by the ignition laser 20b passes through the glass cover plate 90b at an angle of 45° to the horizontal plane and reaches the surface of the coal sample to ignite the coal sample. When the laser light passes through the interface between the glass cover plate 90b and the air, it is partially reflected, 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. The power of the reflected light is counted and integrated over time. After conversion, the non-combustion heat introduced by the laser during the entire analysis process can be obtained, which can be accurately deducted in the final heat calculation.

The present disclosure can avoid the inconsistency of the output energy caused by the light decay of the ignition laser 20b and the change of the ambient temperature, and can avoid repeated calibration when the heat detection device 100b is stable, which is beneficial to automatic realization. The function of the glass cover plate 90b is not only to reflect part of the laser light for energy detection, but also to protect the lens group of the ignition laser 20b from soot adsorption. Wherein, the reflectivity of the glass cover plate 90b can be adjusted by coating. When using non-coated glass, its reflectivity can reach about 10%. At this time, using a 5W laser, the reflected power can reach about 500mW.

In some specific embodiments, the detector 110b communicates 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 calculate the coal sample's ignition energy signal The combustion energy is deducted, thereby further improving the degree of automation of the heat detection device 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 a small hole are provided between the glass cover 90b and the detector 110b, the glass cover 90b, the attenuator 120b, the baffle The plate 130b and the detector 110b are arranged in sequence. Since the high-sensitivity detector 110b works in a nonlinear range, it is not conducive to accurate energy statistics. At this time, by setting the attenuator 120b and the baffle plate 130b with a 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 made more accurate, and then the laser input can be calculated more accurately. non-combustion heat, so that the heat detection device 100b can measure the heat of the coal sample more accurately. For example, the attenuator 120b can use neutral gray glass, polarizers, concave lenses and small holes. In the entire optical cavity, all inner walls need to be blackened and matte treated to avoid statistical errors caused by reflection as much as possible.

According to some embodiments of the present disclosure, as shown in FIG. 3 , there are a plurality of baffles 130b with small holes spaced apart. Thereby, the power statistics of the reflected light by the detector 110b can be further made more accurate.

As shown in FIG. 4 , a coal quality analysis system 1000 according to an embodiment of the present disclosure includes M heating furnaces 100a, heat detection equipment 100b and a carrier 100e.

Wherein, the heat detection device 100b is the heat detection device 100b as described above. Each heating furnace 100a is used to measure at least one coal quality index, and M is an integer greater than or equal to 1. It can be understood that the coal quality index may include but not limited to moisture, ash, volatile matter and sulfur. Here M can be 1, and one heating furnace 100a can be used for determining any one of moisture, ash, volatile matter and sulfur, or one heating furnace 100a can be used for simultaneously measuring moisture and volatile matter, or one heating furnace 100a can be used for Simultaneous determination of ash content and sulfur; here M also can be 2, two heating furnaces 100a can be used for measuring any two in moisture, ash content, volatile matter and sulfur, or one heating furnace 100a is used for measuring moisture and volatile matter simultaneously, Another heating furnace 100a is used to measure ash and sulfur at the same time; here M can also be 3, and three heating furnaces 100a can be used to measure any three in moisture, ash, volatile matter and sulfur respectively; Certainly M can also be 4 , 5 or 6, etc., are used here for illustration only, and should not be construed as limiting the present disclosure. In the following, M is 2, and one heating furnace 100a is used for simultaneous determination of moisture and volatile matter, and the other heating furnace 100a is used for simultaneous determination of ash content and sulfur for illustration.

The principle of moisture determination is as follows: Weigh a certain amount of coal sample for general analysis experiment, dry it in the air or nitrogen flow in the heating furnace at 105 ° C ~ 110 ° C until the quality is constant, and calculate the coal sample weight according to the mass loss of the coal sample. Moisture mass fraction.

The principle of determining volatile matter is as follows: Weigh a certain amount of coal sample for general analysis experiment, heat it in a heating furnace at (900±10)°C for 7 minutes without air, and subtract the mass fraction of the coal sample mass from the reduced mass The moisture mass fraction of the coal sample is used as 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 measuring device and a control assembly. The furnace body has a heating chamber, which is suitable for placing a crucible for carrying coal samples. The heating chamber is provided with a vent, and the gas required to measure the corresponding coal quality index enters the heating chamber through the vent; the heating device is set in the heating chamber to feed the coal. The sample is heated; the part 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 gas can be introduced into the air vent, and the control component is communicated with the mass measuring device, which can measure the mass of the crucible carrying the coal sample before heating and Generate a quality signal and transmit it to the control component. When the heating device heats the coal sample to 105°C-110°C and the coal sample is dried to a constant quality, the quality measuring device can measure the mass of the crucible carrying the coal sample at this time and generate a quality signal for transmission to the control unit. The control component can calculate the mass loss according to the mass of the crucible carrying the coal sample before heating and the current mass of the crucible carrying the coal sample, so as to calculate the moisture mass fraction of the coal sample.

The heating device continues to heat the coal sample to (900±10)°C. After heating for 7 minutes, the mass measuring device can measure the mass of the crucible carrying the coal sample at this time and generate a mass signal to transmit to the control component. The control component can use the reduced mass The mass fraction of the coal sample mass is subtracted from the moisture mass fraction of the coal sample as the volatile mass fraction of the coal sample.

The heating furnace 100a is the same for the determination of volatile matter and sulfur, so it will not be repeated here.

The carrier 100e includes an equipment compartment 1e and an electrical appliance compartment 2e, M heating furnaces 100a and heat detection equipment 100b are located in the equipment compartment 1e, and a control module 140b is located in the electrical appliance compartment 2e. Thus, the M heating furnaces 100a, heat detection devices 100b and control modules 140b can be placed according to functional areas, so that the M heating furnaces 100a, heat detection devices 100b and control modules 140b are neatly arranged without interfering with each other.

According to the coal quality analysis system 1000 of the embodiment of the present disclosure, by integrating M heating furnaces 100a and heat detection equipment 100b, and allowing the control component to analyze the quality signal of the heating furnace 100a, let the control module 140b monitor the temperature of the heat detection equipment 100b The signal is analyzed, so that one person can operate the coal quality analysis system 1000, and the data after the measurement 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 of the present disclosure has high integration and good convenience, and saves manpower and material resources during use.

In describing the present disclosure, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial", The orientations or positional relationships indicated by "radial", "circumferential", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying the referred devices or elements Must be in a particular orientation, constructed, and operate in a particular orientation, and thus should not be construed as limiting on the present disclosure. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present disclosure, unless otherwise specified, "plurality" means two or more.

In the description of the present disclosure, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present disclosure in specific situations.

In the description of this specification, references to the terms "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific examples," or "some examples" are intended to mean that the implementation A specific feature, structure, material, or characteristic described by an embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present disclosure have been shown and described, those skilled in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present disclosure. The scope of the present disclosure is defined by the claims and their equivalents.

Those skilled in the art can understand that various combinations and/or combinations of the features described in the various embodiments and/or claims of the present disclosure can be made, even if such combinations or combinations are not explicitly recorded in the present disclosure. In particular, without departing from the spirit and teaching of the present disclosure, the various embodiments of the present disclosure and/or the features described in the claims can be combined and/or combined in various ways. All such combinations and/or combinations fall within the scope of the present disclosure.

While the present disclosure has been shown and described with reference to certain exemplary embodiments thereto, it should be understood by those skilled in the art that other modifications may be made without departing from the spirit and scope of the present disclosure as defined by the appended claims and their equivalents. Various changes in form and details have been made to this disclosure. Therefore, the scope of the present disclosure should not be limited to the above-described embodiments, but should be determined not only by the appended claims, but also by the equivalents of the appended claims.

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.

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