CN106706405B - Miniature flue gas pretreatment device capable of realizing automatic drainage through ladder refrigeration - Google Patents
Miniature flue gas pretreatment device capable of realizing automatic drainage through ladder refrigeration Download PDFInfo
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- CN106706405B CN106706405B CN201710126632.6A CN201710126632A CN106706405B CN 106706405 B CN106706405 B CN 106706405B CN 201710126632 A CN201710126632 A CN 201710126632A CN 106706405 B CN106706405 B CN 106706405B
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
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Abstract
The invention provides a miniature smoke pretreatment device capable of realizing automatic drainage through ladder refrigeration, and belongs to the technical field of smoke pretreatment. The device comprises a pipeline system, a pipeline supporting system, a measuring system, a drainage circulating system and a refrigerating and radiating system, wherein high-temperature and high-humidity flue gas passes through the pipeline, natural air cooling, water cooling and semiconductor refrigeration based on the Peltier effect are combined, heat of the flue gas is rapidly led out and radiated, and the radiating fin and the fan are used for convection heat exchange. The pipeline adopts an inclined installation mode, condensed water flows into the water collecting channel by means of self gravity, and cooling water is discharged by the photoelectric sensing device and the mechanical structure. According to Bernoulli's principle of the communicating conduit, a U-shaped pipe with a certain height is arranged, and the cooling water is reused by utilizing the pressure difference provided by the water suction pump. The device realizes the rapidity, the accuracy and the stability of refrigeration.
Description
Technical Field
The invention relates to the technical field of flue gas pretreatment, in particular to a miniature flue gas pretreatment device capable of realizing automatic drainage through ladder refrigeration.
Background
The flue gas online monitoring system is a measuring system for carrying out online analysis on flue gas components, and is required to accurately measure the component proportion of various gases in the flue gas, especially the pollution gases. The traditional measurement modes are divided into two types: a flue gas analysis system without pretreatment and a flue gas analysis system with pretreatment are added. (1) The flue gas analysis system without the pretreatment system mainly adopts a pipeline heating method, namely, the sample gas which is extracted from a chimney and dedusted flows into a flue gas analyzer along a pipeline, and the sample gas is heated in the pipeline through a heating resistance wire so as to ensure that the sample gas keeps high temperature. The defect of this way is that a large amount of moisture exists in the sample gas, and the moisture reacts with the acidic or alkaline gas contained in the sample gas to generate acidic or alkaline aerosol, so that a sensor is damaged, and the measurement result is inaccurate; the flue gas analysis system added with pretreatment is used for cooling water vapor in the flue gas before analyzing the components of the flue gas and separating out liquid water so as to reduce the content of water in the gas and improve the measurement accuracy of the flue gas analysis system. (2) Many large-scale sampling flue gas analysis systems are configured with compression refrigeration to remove moisture contained in flue gas, but due to the continuity of flue gas sampling, the energy consumed by a pretreatment system is very large, and along with the continuous accumulation of the condensation water quantity, how to timely discharge the condensation water also becomes a problem to be solved by the traditional pretreatment system. (3) At present, peristaltic pumps are mostly adopted to collect condensation water, and a water outlet valve is opened to drain water in cooperation with periodic manual operation, so that interference of external air to sample gas components is prevented, the defect of heating of a pipeline is overcome to a certain extent, and the defects of energy consumption, time consumption and labor consumption still exist. The invention provides a miniature smoke pretreatment device capable of realizing small sampling of smoke, ladder refrigeration, low-power rapid refrigeration and intelligent drainage, so as to solve the problems.
Disclosure of Invention
The invention aims to provide a miniature flue gas pretreatment device capable of realizing automatic drainage through ladder refrigeration. The pretreatment device is installed by adopting a U-shaped pipe and a pipe body in an inclined way, and condensed water automatically flows into the water collecting channel due to the action of gravity. When the condensate water level flowing into the left pipeline of the U-shaped pipe reaches the position of the photoelectric sensor, the water pump circuit switch is turned on due to the fact that the liquid level shields the light signal, and the water pump can automatically pump water into the water cooling pipe.
The device comprises a pipeline system, a pipeline supporting system, a measuring system, a drainage circulating system and a refrigerating and heat radiating system;
the pipeline system comprises an air inlet, an air cooling pipe, a water cooling pipe, a pipe body and an air outlet pipe; the pipeline supporting system comprises a first upright post, a base, foot pads, an upper fixing frame, a lower fixing frame, a bracket, a second upright post and a bracket; the measuring system comprises a front temperature and humidity sensor, a rear temperature and humidity sensor, a temperature and humidity sensor fixing frame and a photoelectric sensor; the drainage circulation system comprises a water collecting channel, a guide pipe, a U-shaped pipe, a photoelectric sensor, a water pump and a water cooling pipe; the refrigerating and heat-dissipating system comprises an air cooling pipe, a water cooling pipe, a refrigerating sheet, a heat radiating sheet, a fan and a refrigerating core;
the air inlet is positioned at the front end of the air cooling pipe, the air inlet end of the air cooling pipe is externally wrapped with the water cooling pipe, the first stand column and the second stand column are respectively connected with the base, four foot pads are uniformly distributed below the base, the foot pads are adhered to the bottom of the base through strong glue, the upper fixing frame and the lower fixing frame are respectively connected with the first stand column through the through holes with vertical joints, and the bracket is connected with the second stand column through the through holes with vertical joints; the front temperature and humidity sensor and the rear temperature and humidity sensor are respectively positioned at two ends of the refrigeration core, and are mounted on the plate bar through a temperature and humidity sensor fixing frame; the cooling fin is arranged on a plate rib at the upper part of the cooling core, the fan is fixed on the cooling fin through bolts and nuts, a cooling core boss is arranged between the cooling fin and the cooling core, the cooling fin is arranged on the cooling core boss, and a temperature sensor jack is reserved on the cooling core boss and is used for installing a temperature sensor; the inside of the refrigeration core is provided with a refrigeration core fin, the air outlet pipe is connected to the tail end of the refrigeration core, the air outlet pipe is connected with a pipe body, the lower part of the pipe body is connected with a water collecting channel, the lower part of the water collecting channel is connected with a guide pipe, the guide pipe is connected with a U-shaped pipe, the tail end of the U-shaped pipe is provided with a bracket, the bracket is provided with a photoelectric sensor, the bracket is fixed on a second upright post, the tail end of the U-shaped pipe is connected with a water pump, and the water pump is connected with a water inlet through a pipeline; the tail end of the lower fixing frame is fixed on the bracket through a screw, and the bracket is fixed on the base.
The upper part and the lower part of the two ends of the water cooling pipe are respectively provided with a water outlet and a water inlet, the front end of the water pump is connected with a left pipeline of the U-shaped pipe, the tail end of the water pump is connected with the water inlet of the water cooling pipe, when the water level rises to the emitting end of the photoelectric sensor, the signal of the photoelectric sensor is blocked and fed back to the circuit, the water pump is connected, low-temperature condensed water in the U-shaped pipe is pumped into the water cooling pipe to cool smoke, the water cooling pipe is a double-pipe heat exchanger, cooling water flows in the double-pipe from bottom to top, and gas flows in the inner pipe from left to right.
The refrigeration and heat dissipation system adopts stepped refrigeration and comprises an air cooling section, a water cooling section and a semiconductor refrigeration section, wherein the air cooling section is an air cooling pipe, high-temperature flue gas is reduced to be within 100 ℃, the water cooling section is a water cooling pipe, the temperature of the flue gas is reduced to be slightly higher than the atmospheric environment temperature, the semiconductor refrigeration section comprises a refrigeration sheet, a heat radiating sheet, a fan and a refrigeration core, the temperature of the flue gas is reduced to 4 ℃, and most of gaseous water in the flue gas is condensed and separated; the refrigerating core comprises a refrigerating core boss, a refrigerating core rib and a plate rib, wherein the refrigerating core boss is provided with a circular temperature sensor jack for inserting a temperature sensor, and the temperature sensor is used for measuring the temperature of the refrigerating core rib; screw holes are formed in the positions, corresponding to the four corners of the fan, of the radiating fin, and bolts are fixed through nuts through the corresponding screw holes; the cold surface of the refrigerating sheet is clung to a refrigerating core boss of the refrigerating core, the connecting end surface is coated with heat conduction silicone grease, the hot surface of the refrigerating sheet is clung to the radiating sheet, and the connecting end surface is coated with heat conduction silicone grease; the threaded holes at four corners of the radiating fin correspond to the threaded holes of the pipe body and the plate ribs in the vertical direction, and are connected through bolts and nuts.
The water collecting channel is at the tail of the pipe body, is in a cuboid shape, has a square cross section and is connected with the pipe body by strong glue.
The water collecting channel, the guide pipe and the U-shaped pipe are all connected by strong glue; the transmitting end and the receiving end of the photoelectric sensor are adhered to the bracket by strong glue.
The bracket is provided with a vertical seam which penetrates through the second upright post, and can slide up and down freely.
The upper fixing frame, the lower fixing frame and the bracket can slide up and down, and the lower fixing frame is box-shaped and is used for supporting the pipe body and the upper fixing frame; the end part of the lower fixing frame is semicircular.
The first upright post is a carbon steel or stainless steel round bar with external threads at the lower end, the foot pad is made of rubber or silica gel materials, and the air cooling pipe, the water cooling pipe and the pipe body are made of quartz materials; the radiating fin is made of ribbed copper material.
The refrigerating core is made of aluminum materials, and the length, the temperature and the surface area of the refrigerating core are matched, so that the temperature of a smoke outlet is ensured to be 2-6 ℃; the double refrigeration core bosses are adopted, the height of the refrigeration core bosses is 2cm, the distance is 1cm, and the area of the refrigeration core bosses is the same as the area of the cold surface of the refrigeration sheet.
The bearing temperature of the front temperature and humidity sensor is above 200 ℃.
The technical scheme of the invention has the following beneficial effects:
the invention adopts a semiconductor refrigeration mode, and the temperature of the refrigeration core can be adjusted and maintained by utilizing the control function of the temperature control plate, so that the rapidness, the accuracy and the stability of refrigeration are realized. The pipe body adopts an inclined installation mode, and condensed water automatically flows into the water collecting channel due to the action of gravity. Proper amount of water is added in advance in the U-shaped pipe to form a closed environment, so that the influence of external air on smoke components caused by the fact that the external air enters the pipe body from the U-shaped pipe is prevented, the height of the water outlet is reasonably adjusted, the condensed water can automatically flow out, and the function of automatic water drainage is achieved. The device has a temperature detection function and a humidity control function. The temperature of the cooling core is automatically regulated and controlled by detecting the temperature and the humidity of the inlet flue gas so as to obtain the flue gas with the required temperature and humidity. The defect that the prior compression refrigeration device cannot control the temperature and humidity before and after refrigeration is overcome, and technical guarantee is provided for experimental research and engineering application.
Drawings
FIG. 1 is a schematic diagram of a miniature flue gas pretreatment device with automatic step refrigeration and water drainage in the invention;
FIG. 2 is a schematic diagram of a measurement system of the miniature flue gas pretreatment device with automatic step refrigeration and drainage, wherein (A) is a temperature and humidity sensor part, and (B) is a photoelectric sensor part;
FIG. 3 is a schematic diagram of the assembly and disassembly structure of the cooling and heat dissipation system of the miniature flue gas pretreatment device with the automatic step cooling and water draining functions;
FIG. 4 is a schematic diagram showing the assembly and disassembly structure of a semiconductor refrigeration device of a miniature flue gas pretreatment device with automatic step refrigeration and drainage;
FIG. 5 is a schematic diagram of a drain circulation system of the step refrigeration automatic drain micro flue gas pretreatment device of the present invention;
fig. 6 is a process flow diagram of the micro flue gas pretreatment device with automatic step refrigeration and drainage according to the present invention, wherein (a) is an air intake flow and (B) is water condensation and drainage flow thereof.
Wherein: 1-an air inlet; 2-an air-cooling tube; 3-a water outlet; 4-a water-cooled tube; 5-a water inlet; 6-column I; 7-an upper fixing frame; 8-a front temperature and humidity sensor; 9-heat sink; 10-bolts; 11-plate ribs; 12-cooling core bosses; 13-a refrigeration core; 14-a temperature sensor; 15-refrigerating sheets; 16-a temperature sensor jack; 17-cooling core fins; 18-a lower fixing frame; 19-a water pump; 20-a fan; 21-a nut; 22-a rear temperature and humidity sensor; 23-a temperature and humidity sensor fixing frame; 24-an air outlet pipe; 25-tube body; 26-screw; 27-a water collecting channel; 28-a catheter; 29-a bracket; 30-a base; 31-foot pads; 32-U-shaped tube; 33-a photosensor; 34-brackets; 35-second upright post.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved more apparent, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
The invention provides a miniature flue gas pretreatment device capable of realizing automatic drainage through ladder refrigeration.
As shown in fig. 1, the front part of the device is provided with an air inlet 1, an air cooling pipe 2 and a water cooling pipe 4; the middle part of the device is a pipe body 25; the rear part of the device is provided with an air outlet pipe 24. The high-temperature flue gas is led in through the air inlet 1, the air cooling pipe 2 is made of copper materials, the heat conduction effect is good, the heat convection and radiation of the high-temperature flue gas and the external environment can be enhanced, the water cooling pipe 4 is a double-pipe heat exchanger, the flue gas flows through the inner pipe of the water cooling pipe 4, cooling water flows through the sleeve pipe of the water cooling pipe 4, the flue gas and the cooling water exchange heat through the pipe wall, the temperature of the flue gas is further reduced, the temperature of the flue gas is close to the temperature value of the external environment, the temperature of the cooling water rises, and the cooling water heated by the flue gas is discharged from the water outlet 3. The left end opening of the tube body 25 is positioned on the lower middle part, and the right end opening of the tube body 25 is positioned on the upper middle part. After the flue gas passes through the water cooling pipe 4, the temperature is reduced to be slightly higher than the ambient temperature from high temperature, then the flue gas enters the pipe body 25, namely the semiconductor refrigerating part, the flue gas at the moment is in a saturated state, the cross section area of the pipe body 25 is larger than that of the air inlet 1, the speed of the flue gas is reduced, the flue gas is fully contacted with the refrigerating core fins, the flue gas flows in from the lower left corner of the pipe body 25 to the upper right corner of the pipe body 25, the heat exchange area is increased, the temperature of the flue gas is continuously reduced until the temperature reaches about 4 ℃, the moisture in the flue gas is reduced due to the temperature, condensed water is precipitated from the flue gas, slides downwards along the refrigerating core fins and drops to the bottom of the pipe body 25, and the condensed water is accumulated in the water collecting channel 27 under the action of gravity due to the inclined installation mode of the pipe body 25.
In the pipeline support system, the first upright post 6 and the second upright post 35 adopt carbon steel or stainless steel round bars with external threads at the lower ends, and can be connected with the base 30 with internal threads at the lower parts through threads, so that the disassembly and the assembly are convenient. Four foot pads 31 are uniformly distributed on the lower portion of the base 30, rubber materials are adopted to play a role in buffering and damping, and the foot pads 31 are adhered to the bottom of the base 30 through strong glue. The upper fixing frame 7 and the lower fixing frame 18 are respectively connected with the first upright post 6 by adopting a perforation with a vertical seam, the bracket 34 is connected with the second upright post 35 by adopting a perforation with a vertical seam, and both the bracket and the second upright post can slide up and down to adjust the position. The vertical seam distance is reduced through the screws 26, and the upright posts are held tightly by friction force to play a role in positioning. The lower fixing frame 18 is box-shaped and is matched with the shape of the pipe body 25, the upper fixing frame 7 is T-shaped and is used for clamping the pipe body 25, the fixing function is achieved, and a circular hole can be formed at the joint of the upper fixing frame 7 and the lower fixing frame 18 at the left side for the pipe body to pass through. The water pump 19 is adhered to the base 30 by strong glue, the left side of the water pump 19 is connected with the water inlet 5 of the water cooling pipe 4, and the right side is connected with the left side pipeline of the U-shaped pipe 32 to form a sealed space.
The measurement system is composed of a front temperature and humidity sensor 8, a rear temperature and humidity sensor 22, a temperature and humidity sensor holder 23, a temperature sensor 14, and a photoelectric sensor 33, as shown in fig. 2 (a) and 2 (B). The temperature sensor 14 is inserted into the temperature sensor insertion hole 16 on the cooling core boss 12, and hot melt adhesive is injected into the temperature sensor insertion hole to perform a fixing function. The rear temperature and humidity sensor 22 is inserted into a through hole of the temperature and humidity sensor fixing frame 23 and can slide up and down. The temperature and humidity sensor fixing frame 23 and the pipe body 25 are bonded by strong glue to play a role in fixing. When flue gas flows in along the pipeline, the top of the front temperature and humidity sensor 8 is right opposite to the gas inlet of the pipe body 25, the temperature and humidity of the inlet flue gas are measured, the temperature sensor 14 is responsible for measuring the temperature of the refrigeration core, and when high-temperature flue gas flows in, the temperature of the refrigeration core is slightly increased due to heat exchange. The rear temperature and humidity sensor 22 is in charge of measuring the temperature and humidity of the flue gas after refrigeration and water removal at the outlet of the pipe 25, and thus the temperature and humidity variation of the flue gas before and after passing through the semiconductor refrigeration section is obtained.
As shown in fig. 3 and 4, the heat sink 9 has a multi-fin type, and the cooling core 13 has a multi-fin type. Four screw holes are respectively distributed at the corresponding positions of the four corners of the fan 20 and the four corners of the radiating fin 9, four screw holes are respectively distributed at the corresponding positions of the four corners of the radiating fin 9 and the four corners of the cooling core plate rib, and the devices are fixed by bolts and nuts. The refrigerating and radiating system takes the refrigerating sheet 15 as a core, the upper part of the refrigerating sheet 15 is tightly attached to the radiating sheet 9, and heat conduction silicone grease is smeared between the refrigerating sheet 15 and the radiating sheet, so that the heat conduction is accelerated, the upper part of the radiating sheet 9 is tightly attached to the fan 20, and the convection heat radiation of the radiating sheet 9 is enhanced. Below the cooling plate 15 is a cooling core boss 12, between which heat conduction silicone grease is coated, and the heat conduction is accelerated. When the semiconductor device starts to operate, the temperature corresponding to the limit temperature difference of the two sides of the semiconductor device is reached in a very short time as is known from the Peltier effect and the thermal inertia of semiconductor refrigeration. The two refrigeration sheets 15 work simultaneously to keep the temperature distribution of the whole refrigeration core uniform. The cold side temperature of the cooling fins 15 is low and absorbs heat from the cooling core, resulting in a decrease in the cooling core temperature. The temperature of the hot surface of the refrigerating sheet 15 is higher, heat is conducted to the radiating sheet 9, and convection heat exchange is enhanced by the fan 20, so that the heat of the flue gas is rapidly dissipated to the surrounding environment.
Fig. 5 shows a drainage circulation device of the device, the whole device adopts an inclined arrangement mode, when high-temperature flue gas passes through a refrigeration section, water is separated out from each section, and water flows into the water collecting channel 27 and the U-shaped pipe 32 along the pipe wall due to the action of gravity and surface tension. The air cooling section, the water cooling section, the semiconductor refrigeration section, the U-shaped pipe 32, the water pump connector and the water inlet 5 of the water cooling pipe are all bonded by strong glue.
The temperature sensor 14, the refrigerating sheet 15 and the fan 20 are controlled by a temperature control plate, and the temperatures and the humidities measured by the temperature sensor 14, the front humiture sensor 8 and the rear humiture sensor 22 are displayed by a temperature control plate display screen.
The design gas flow of the device is 0-0.2L/min; the radiating fins are 90X 90mm ribbed copper radiating fins, and the rib height is 10mm; the fan uses a 60mm direct current vortex fan, and the thickness of the fan is 15mm; the refrigeration core is made of aluminum material, the width of the fins is 50mm, 10 fins, 5 channels are adopted, the thickness of the fins is 1mm, the distance between the fins is 3mm, and the length of the refrigeration core is 130mm; the height of the cooling core boss is 20mm, and the side length of the section is 40 mm; the refrigeration piece adopts 12703 type refrigeration piece.
The operation process of the device is as follows: first, as shown in fig. 6 (a), the temperature sensor 14 is installed, and the front temperature and humidity sensor 8 is adjusted so as to be aligned with the smoke inlet of the pipe 25, and the rear temperature and humidity sensor 22 is aligned with the smoke outlet of the pipe 25. The adjustment means is mounted obliquely so that the condensed water can flow toward the water collecting channel 27. And (3) opening the temperature control board to determine whether the temperature and humidity indication is the actual temperature and humidity of the air, if so, continuing the experiment, otherwise, replacing the corresponding sensor. The air inlet 1 and the air outlet 24 are plugged by a cotton plug to create a closed environment, the switch of the refrigerating sheet 15 and the fan 20 is opened, the refrigerating temperature required by the refrigerating core is set, when the measured number of the temperature sensor 14 is the required temperature, the smoke or simulated smoke in the test range is obtained by using the relevant sampler, the smoke is introduced, the initial temperature and humidity of the smoke can be measured by the front temperature and humidity sensor 8, the smoke is cooled when passing through the refrigerating core, and the water vapor is condensed and separated out and is attached to the pipe wall, flows into the water collecting channel 27 and enters the U-shaped pipe 32, and when the water level at the left side of the U-shaped pipe 32 reaches the position of the photoelectric sensor, the condensed water is pumped into the water cooling pipe by the water pump as shown in fig. 6 (B). When the smoke passes through the rear temperature and humidity sensor, the temperature and humidity of the smoke are measured again, if the ideal temperature and humidity are reached, the dry smoke can be led into a smoke analyzer for component analysis, otherwise, the lower refrigeration temperature is set until the ideal temperature and humidity value of the outlet smoke are reached.
In the specific implementation process, the flue gas pretreatment device is used for removing the moisture in the flue gas generated by the combustion of a certain boiler, the temperature of the flue gas is 340 ℃, and the moisture content is 25% humidity of 333g/m 3 . The air inflow of the device is 0.1L/min, the inner diameter of the pipeline is 36mm, the flow rate is 1.67mm/s, and the lengths of the air cooling pipe and the water cooling pipe are 20cm respectively. And (3) opening a cooling fin fan and a cooling fin switch, setting the temperature of a cooling core to be 4 ℃, adding water with the temperature of room temperature into a water cooling pipe to a water outlet of the water cooling pipe, introducing smoke when the temperature of each part of the device is stable, stabilizing the smoke after a period of time, condensing water drops on the pipe wall of the air cooling section, the pipe wall of the water cooling section and the pipe wall of the electronic cooling section, and collecting and flowing into a U-shaped pipe. The measured flue gas inlet temperature of the refrigerating section is 62 ℃, and the water content is 156g/m 3 The temperature of the flue gas measured at the gas outlet pipe is 4 ℃ and the water content is 5g/m 3 . The device has a water removal rate of 328g/m under the above conditions 3 The water removal rate reaches 98.5 percent.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.
Claims (8)
1. The utility model provides a miniature flue gas preprocessing device of automatic drainage of ladder refrigeration which characterized in that: the system comprises a pipeline system, a pipeline support system, a measurement system, a drainage circulation system and a refrigerating and heat-dissipating system;
the pipeline system comprises an air inlet (1), an air cooling pipe (2), a water cooling pipe (4), a pipe body (25) and an air outlet pipe (24); the pipeline supporting system comprises a first upright post (6), a base (30), foot pads (31), an upper fixing frame (7), a lower fixing frame (18), a bracket (29), a second upright post (35) and a bracket (34); the measuring system comprises a front temperature and humidity sensor (8), a rear temperature and humidity sensor (22) and a temperature sensor (14), a temperature and humidity sensor fixing frame (23) and a photoelectric sensor (33); the drainage circulation system comprises a water collecting channel (27), a guide pipe (28), a U-shaped pipe (32), a photoelectric sensor (33), a water pump (19) and a water cooling pipe (4); the refrigerating and heat-radiating system comprises an air-cooling pipe (2), a water-cooling pipe (4), refrigerating sheets (15), heat-radiating sheets (9), a fan (20) and a refrigerating core (13);
the air inlet (1) is positioned at the front end of the air cooling pipe (2), the air inlet end of the air cooling pipe (2) is externally wrapped with the water cooling pipe (4), the first stand column (6) and the second stand column (35) are respectively connected with the base (30), four foot pads (31) are uniformly distributed below the base (30), the foot pads (31) are adhered to the bottom of the base (30) through strong glue, the upper fixing frame (7) and the lower fixing frame (18) are respectively connected with the first stand column (6) through holes with vertical joints, and the bracket (34) is connected with the second stand column (35) through the holes with the vertical joints; the front temperature and humidity sensor (8) and the rear temperature and humidity sensor (22) are respectively positioned at two ends of the refrigeration core (13), and the front temperature and humidity sensor (8) and the rear temperature and humidity sensor (22) are arranged on the plate rib (11) through a temperature and humidity sensor fixing frame (23); the cooling fin (9) is arranged on a plate rib (11) at the upper part of the cooling core (13), the fan (20) is fixed on the cooling fin (9) through a bolt (10) and a nut (21), a cooling core boss (12) is arranged between the cooling fin (9) and the cooling core (13), the cooling fin (15) is arranged on the cooling core boss (12), and a temperature sensor jack (16) is reserved on the cooling core boss (12) and used for installing a temperature sensor (14); the inside of the refrigeration core (13) is provided with a refrigeration core rib (17), an air outlet pipe (24) is connected to the tail end of the refrigeration core (13), the air outlet pipe (24) is connected with a pipe body (25), the lower part of the pipe body (25) is connected with a water collecting channel (27), the lower part of the water collecting channel (27) is connected with a guide pipe (28), the guide pipe (28) is connected with a U-shaped pipe (32) in rear, the tail end of the U-shaped pipe (32) is provided with a bracket (34), the bracket (34) is provided with a photoelectric sensor (33), the bracket (34) is fixed on a stand column II (35), the tail end of the U-shaped pipe (32) is connected with a water pump (19), and the water pump (19) is connected with a water inlet (5) through a pipeline; the tail end of the lower fixing frame (18) is fixed on a bracket (29) through a screw (26), and the bracket (29) is fixed on a base (30);
the upper part and the lower part of the two ends of the water cooling pipe (4) are respectively provided with a water outlet (3) and a water inlet (5), the front end of the water pump (19) is connected with a left pipeline of the U-shaped pipe (32), the tail end of the water pump (19) is connected with the water inlet (5) of the water cooling pipe (4), when the water level rises to the transmitting end of the photoelectric sensor (33), signals of the photoelectric sensor (33) are blocked and fed back to the circuit, the water pump (19) is connected, low-temperature condensed water in the U-shaped pipe (32) is pumped into the water cooling pipe (4) to cool smoke, the water cooling pipe (4) is a sleeve heat exchanger, the cooling water flows in the sleeve from bottom to top, and the gas flows in the inner pipe from left to right;
the refrigeration and heat dissipation system adopts stepped refrigeration and comprises an air cooling section, a water cooling section and a semiconductor refrigeration section, wherein the air cooling section is an air cooling pipe (2), the water cooling section is a water cooling pipe (4), and the semiconductor refrigeration section comprises a refrigeration sheet (15), a heat dissipation sheet (9), a fan (20) and a refrigeration core (13); the refrigeration core (13) comprises a refrigeration core boss (12), a refrigeration core rib (17) and a plate rib (11), a round temperature sensor jack (16) is formed in the refrigeration core boss (12) and used for inserting a temperature sensor (14), and the temperature sensor (14) is used for measuring the temperature of the refrigeration core rib (17); screw holes are formed in the positions, corresponding to four corners of the fan (20), of the radiating fin (9), and the bolts (10) are fixed through the corresponding screw holes by nuts (21); the cold surface of the refrigerating sheet (15) is clung to the refrigerating core boss (12) of the refrigerating core (13), the connecting end surface is coated with heat conduction silicone grease, the hot surface of the refrigerating sheet (15) is clung to the radiating sheet (9), and the connecting end surface is coated with heat conduction silicone grease; screw holes at four corners of the radiating fin (9) are vertically corresponding to screw holes of the pipe body (25) and the plate ribs (11) and are connected with nuts (21) through bolts (10);
the front part of the device is provided with an air inlet (1), an air cooling pipe (2) and a water cooling pipe (4); the middle part of the device is a tube body (25); the air inlet (1) of the air outlet pipe (24) is arranged at the rear part of the device, high-temperature flue gas is led in, the air cooling pipe (2) is made of copper materials, the heat conduction effect is good, the convection heat exchange and radiation heat dissipation between the high-temperature flue gas and the external environment can be enhanced, the water cooling pipe (4) is a double-pipe heat exchanger, the flue gas flows through the inner pipe of the water cooling pipe (4), cooling water flows through the sleeve of the water cooling pipe (4), the flue gas and the cooling water exchange heat through the pipe wall, the temperature of the flue gas is further reduced, the temperature of the flue gas is close to the temperature value of the external environment, the temperature of the cooling water is increased, and the cooling water heated by the flue gas is discharged from the water outlet (3); the left end opening of the pipe body (25) is positioned on the lower middle part, and the right end opening of the pipe body (25) is positioned on the upper middle part; after the flue gas passes through the water cooling pipe (4), the temperature is reduced to be slightly higher than the ambient temperature from high temperature, then the flue gas enters the pipe body (25), namely the semiconductor refrigeration part, the flue gas at the moment is in a saturated state, the cross section area of the pipe body (25) is larger than that of the air inlet (1), the flue gas speed is reduced and fully contacts with the refrigeration core fins, the flue gas flows in from the lower left corner of the pipe body (25) to the upper right corner of the pipe body (25) and flows out, the heat exchange area is increased, the temperature of the flue gas continuously drops until the set temperature reaches 4 ℃, the moisture in the flue gas is reduced due to the temperature, condensed water is precipitated from the flue gas, slides downwards along the refrigeration core fins and drops to the bottom of the pipe body (25), and the condensed water is accumulated in the water collecting channel (27) under the action of gravity due to the inclined installation mode of the pipe body (25).
2. The miniature flue gas pretreatment device for automatic drainage of ladder refrigeration according to claim 1, wherein: the water collecting channel (27) is in a cuboid shape at the tail part of the pipe body (25), the cross section of the water collecting channel is square, and the water collecting channel is connected with the pipe body (25) through strong glue.
3. The miniature flue gas pretreatment device for automatic drainage of ladder refrigeration according to claim 1, wherein: the water collecting channel (27), the guide pipe (28) and the U-shaped pipe (32) are all connected by strong glue; the emitting end and the receiving end of the photoelectric sensor (33) are adhered to the bracket (34) by using strong glue.
4. The miniature flue gas pretreatment device for automatic drainage of ladder refrigeration according to claim 1, wherein: the bracket (34) is provided with a vertical seam which penetrates through the second upright post (35), and the bracket (34) can slide up and down freely.
5. The miniature flue gas pretreatment device for automatic drainage of ladder refrigeration according to claim 1, wherein: the upper fixing frame (7), the lower fixing frame (18) and the bracket (34) can slide up and down, and the lower fixing frame (18) is box-shaped and is used for supporting the pipe body (25) and the upper fixing frame (7); the end part of the lower fixing frame (18) is semicircular.
6. The miniature flue gas pretreatment device for automatic drainage of ladder refrigeration according to claim 1, wherein: the first upright post (6) is a carbon steel or stainless steel round bar with external threads at the lower end, the foot pad (31) is made of rubber or silica gel materials, and the air cooling pipe (2), the water cooling pipe (4) and the pipe body (25) are made of quartz materials; the radiating fin (9) is made of ribbed copper material.
7. The miniature flue gas pretreatment device for automatic drainage of ladder refrigeration according to claim 1, wherein: the refrigerating core (13) is made of aluminum materials, and the length, the temperature and the surface area of the refrigerating core (13) are matched, so that the temperature of a flue gas outlet is ensured to be 2-6 ℃; the double-refrigeration-core bosses (12) are adopted, the height of each refrigeration-core boss (12) is 2cm, the distance is 1cm, and the area of each refrigeration-core boss (12) is the same as the area of the cold surface of the refrigeration piece (15).
8. The miniature flue gas pretreatment device for automatic drainage of ladder refrigeration according to claim 1, wherein: the front temperature and humidity sensor (8) bears the temperature of more than 200 ℃.
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| CN101498526A (en) * | 2008-02-01 | 2009-08-05 | 宇星科技发展(深圳)有限公司 | Continuous flue gas monitoring electronic refrigerator |
| JP2011115703A (en) * | 2009-12-02 | 2011-06-16 | Yokoi Kogyo Kk | Gas treatment apparatus |
| CN106031840A (en) * | 2015-03-15 | 2016-10-19 | 青岛明华电子仪器有限公司 | High-efficiency device for water removal from flue gas |
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| CN101498526A (en) * | 2008-02-01 | 2009-08-05 | 宇星科技发展(深圳)有限公司 | Continuous flue gas monitoring electronic refrigerator |
| CN201177611Y (en) * | 2008-03-31 | 2009-01-07 | 索菲菲 | Air flue straight-insertion type gas analysis system |
| JP2011115703A (en) * | 2009-12-02 | 2011-06-16 | Yokoi Kogyo Kk | Gas treatment apparatus |
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