CN215985827U - Flue gas acid dew point measuring device - Google Patents
Flue gas acid dew point measuring device Download PDFInfo
- Publication number
- CN215985827U CN215985827U CN202121975248.1U CN202121975248U CN215985827U CN 215985827 U CN215985827 U CN 215985827U CN 202121975248 U CN202121975248 U CN 202121975248U CN 215985827 U CN215985827 U CN 215985827U
- Authority
- CN
- China
- Prior art keywords
- flue gas
- dew point
- acid dew
- measuring device
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses a flue gas acid dew point measuring device. This flue gas acid dew point measuring device includes: a body portion having a front end adapted to be inserted into a flue gas duct; the insulating patch is arranged at the front end of the body part and is in contact with the smoke; a temperature sensor disposed adjacent to the insulating patch; a temperature adjusting device for adjusting a temperature of a front end of the body portion; and the processing and collecting device is respectively electrically connected with the insulation patch and the temperature sensor so as to record the acid dew point information of the flue gas according to the change of the electric signal of the insulation patch and the temperature measured by the temperature sensor. According to the flue gas acid dew point measuring device provided by the embodiment of the utility model, the on-line measurement of the flue gas acid dew point can be completed in various complex high-temperature flue gas environments, and the device has the advantages of simplicity and convenience in operation, high temperature resistance, high data precision, low cost and the like, and has strong market competitiveness.
Description
Technical Field
The utility model relates to the field of flue gas acid dew point measurement, in particular to a flue gas acid dew point measurement device.
Background
For large-scale industrial equipment such as power station boilers and the like, the acid dew point of the flue gas is an important factor influencing the stable operation of the large-scale industrial equipment, and the fuel of the common power station boiler contains S, N, C and other elements, SO that the combustion products in the flue gas contain a certain amount of SO2、SO3、NO、NO2CO and CO2When high-temperature flue gas enters a tail flue gas pipeline, measures for reducing the temperature of the flue gas are generally taken to reduce the loss of the flue gas, if the temperature of the flue gas is reduced too much, the acid gas reaches the acid dew point temperature, the acid gas is further combined with water vapor and is condensed to form acid liquid on the wall surface of the flue gas pipeline, the flue gas pipeline is usually made of metal, the acid liquid can continuously corrode the heated surface of metal to damage the flue gas pipeline, in addition, fly ash particles in the flue gas can be combined with iron rust generated by corrosion to cause dust accumulation, the flue gas pipeline is blocked, and the normal operation of a boiler is influenced. Therefore, the accurate measurement of the acid dew point of the high-temperature flue gas has important significance for the safe and stable operation of large-scale industrial equipment such as power station boilers and the like.
In the related art, the flue gas acid dew point measuring instrument has a precise structure and a high price, and is difficult to adapt to a high-temperature complex industrial production environment, so that a flue gas acid dew point measuring device which can be used in the industrial production environment is urgently needed.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving, at least to some extent, one of the above-mentioned problems in the prior art. Therefore, the utility model provides a flue gas acid dew point measuring device which can complete on-line measurement of flue gas acid dew points in various complex high-temperature flue gas environments.
The flue gas acid dew point measuring device provided by the embodiment of the utility model comprises: a body portion having a front end adapted to be inserted into a flue gas duct; the insulating patch is arranged at the front end of the body part and is in contact with the smoke; a temperature sensor disposed adjacent to the insulating patch; a temperature adjusting device for adjusting a temperature of a front end of the body portion; and the processing and collecting device is respectively electrically connected with the insulation patch and the temperature sensor so as to record the acid dew point information of the flue gas according to the change of the electric signal of the insulation patch and the temperature measured by the temperature sensor.
According to the flue gas acid dew point measuring device provided by the embodiment of the utility model, the processing and collecting device can record the flue gas acid dew point information according to the change of the electric signals of the insulating patch and the temperature sensor, so that the flue gas acid dew point is obtained, the temperature of flue gas in the flue gas pipeline can be reasonably controlled according to the flue gas acid dew point, so that acidic liquid formed when the temperature of the flue gas reaches the acid dew point temperature is prevented from corroding the flue gas pipeline, the flue gas acid dew point measuring device can complete the on-line measurement of the flue gas acid dew point in various complex high-temperature flue gas environments, and the flue gas acid dew point measuring device has the advantages of simplicity and convenience in operation, high temperature resistance, high data precision, low cost and the like, and has strong market competitiveness.
According to some embodiments of the utility model, the insulating patch is provided with an electrode, and the electrode is electrically connected with the processing and collecting device through a circuit system.
According to some embodiments of the utility model, the electrode comprises a positive electrode and a negative electrode, the positive electrode and the negative electrode being spaced apart on an outer surface of the insulating patch.
Further, the positive electrode and the negative electrode extend in a zigzag manner on the outer surface of the insulating patch.
According to some embodiments of the utility model, the dielectric patch is a dielectric ceramic patch and the electrode is a gold wire electrode or a nickel wire electrode.
According to some embodiments of the present invention, the flue gas acid dew point measuring device further includes a protective shell, a protective cavity is enclosed by the protective shell and the body, and the circuit system is disposed in the protective cavity.
According to some embodiments of the utility model, a fluid channel is provided in the body portion, the fluid channel being in communication with the temperature regulating device for conveying a cooling medium into the fluid channel.
Further, the fluid channel comprises an inlet channel and a return channel, and the return channel is arranged around the inlet channel; the flow path of the cooling medium in the fluid channel is an inlet of the inlet channel, an outlet of the inlet channel, an inlet of the return channel and an outlet of the return channel.
Further, the outlet of the inlet channel and the inlet of the return channel are arranged at the front end of the body part.
According to some embodiments of the utility model, the processing and collecting device is provided with a data transmission interface for exporting the recorded flue gas acid dew point information.
Additional aspects and advantages of the utility model 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 utility model.
Drawings
FIG. 1 is a schematic diagram of a flue gas acid dew point measuring device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a fluid channel of a flue gas acid dew point measuring device according to an embodiment of the utility model.
Reference numerals:
the device comprises a body part 1, a fluid channel 11, a flow inlet channel 111, an inlet 1111 of the flow inlet channel, an outlet 1112 of the flow inlet channel, a return channel 112, an inlet 1121 of the return channel, an outlet 1122 of the return channel, an insulation patch 2, a temperature sensor 3, a temperature adjusting device 4, a circulating water pump 41, a cooling water tank 42, a processing and collecting device 5, a circuit system 6, a protective shell 7, a flue gas pipeline 20 and a flue gas pipeline wall 201.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.
In the description of the present invention, it is to be understood that the terms "front", "back", "inside", "outside", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The flue gas acid dew point measuring device according to the embodiment of the utility model is described in detail below with reference to fig. 1-2.
The flue gas acid dew point measuring device according to the embodiment of the utility model can be used for measuring the flue gas acid dew point in the flue gas pipeline 20, the flue gas pipeline 20 can be the flue gas pipeline 20 of large-scale industrial equipment such as a power station boiler, and the flue gas in the flue gas pipeline 20 contains a certain amount of acid gas, such as SO2、SO3、NO、NO2CO and CO2And the flue gas acid dew point can be obtained by measuring the flue gas acid dew point in the flue gas pipeline 20 by the flue gas acid dew point measuring device, so that the temperature of the flue gas in the flue gas pipeline 20 can be reasonably controlled according to the flue gas acid dew point, the flue gas temperature is prevented from reaching the acid dew point temperature to form acid liquid, the corrosion of the flue gas pipeline 20 by the acid liquid is favorably prevented, and the safe and stable operation of industrial equipment is ensured.
Referring to fig. 1-2, the flue gas acid dew point measuring device comprises: the temperature control device comprises a body part 1, an insulating patch 2, a temperature sensor 3, a temperature adjusting device 4 and a processing and collecting device 5. The front end of the body part 1 is adapted to be inserted into the flue gas duct 20 through the flue gas duct wall 201 to contact with the flue gas in the flue gas duct 20, the front end of the body part 1 may form the windward side of the flue gas, the rear end of the body part 1 may be located outside the flue gas duct 20, and the temperature regulating device 4 and the treatment collecting device 5 may be connected with the rear end of the body part 1 to avoid high temperature and corrosion of the flue gas. The insulating patch 2 is arranged at the front end of the body part 1 and is in contact with smoke, the temperature sensor 3 is arranged close to the insulating patch 2, and the temperature sensor 3 can measure the temperature of the insulating patch 2 and/or the temperature near the insulating patch 2. The temperature adjusting device 4 is used for adjusting the temperature of the front end of the body portion 1, for example, when measuring the acid dew point of the flue gas, the temperature adjusting device 4 can gradually reduce the temperature of the front end of the body portion 1, and simultaneously the insulation patch 2 reduces the temperature along with the front end of the body portion 1, so that the flue gas is condensed into the acid liquid on the insulation patch 2. Processing collection system 5 is connected with insulating paster 2 and temperature sensor 3 electricity respectively, come record flue gas acid dew point information according to the change of insulating paster 2 signal of telecommunication and the temperature that temperature sensor 3 measured, it can be understood, when the flue gas condenses out acid liquid on insulating paster 2, acid liquid can be attached to insulating paster 2, because the electrically conductive effect of ion in the acid liquid, make insulating paster 2's current signal take place the sudden change, and transmit to processing collection system 5 rather than being connected, and simultaneously, processing collection system 5 can take place the temperature that the sudden change moment corresponds 3 measured temperature with insulating paster 2's current signal as flue gas acid dew point, and record flue gas acid dew point information. Wherein, flue gas acid dew point information can include the temperature variation that temperature sensor 3 measured and 2 electric current change signals of insulating paster, handles collection system 5 and can set up acquisition frequency and digital module's conversion, handles collection system 5 and can also directly show the temperature value that temperature sensor 3 measured and obtain and save through display panel.
In some embodiments of the present invention, the temperature sensor 3 may be a thermocouple, and the thermocouple has the advantages of high measurement accuracy, high temperature resistance, high pressure resistance, long service life, high measurement accuracy, and the like.
According to the flue gas acid dew point measuring device provided by the embodiment of the utility model, the processing and collecting device 5 can record the flue gas acid dew point information according to the electric signal changes of the insulating patch 2 and the temperature sensor 3, so that the flue gas acid dew point is obtained, the temperature of flue gas in the flue gas pipeline 20 can be reasonably controlled according to the flue gas acid dew point, so that acidic liquid formed when the temperature of the flue gas reaches the acid dew point temperature is prevented from corroding the flue gas pipeline 20, the flue gas acid dew point measuring device can complete the on-line measurement of the flue gas acid dew point in various complex high-temperature flue gas environments, and the flue gas acid dew point measuring device has the advantages of simplicity and convenience in operation, high temperature resistance, high data accuracy, low cost and the like, and has strong market competitiveness.
Referring to fig. 1, an electrode is disposed on the insulating patch 2, the electrode is electrically connected to the processing and collecting device 5 through a circuit system 6, and the circuit system 6 can transmit a current signal on the insulating patch 2 to the processing and collecting device 5.
In some embodiments of the present invention, the electrodes include a positive electrode and a negative electrode, the positive electrode and the negative electrode are spaced apart from each other on the outer surface of the insulating patch 2, it is understood that when no acidic liquid is condensed on the outer surface of the insulating patch 2, the resistance between the positive electrode and the negative electrode is relatively high due to the obstruction of the insulating patch 2, and when the acidic liquid is condensed on the outer surface of the insulating patch 2, the positive electrode and the negative electrode can be conducted through the acidic liquid with relatively low resistance, so that the current signal of the insulating patch 2 changes abruptly.
In some embodiments of the utility model, the positive and negative electrodes are equally spaced on the outer surface of the insulating patch 2. The distance between the positive electrode and the negative electrode can be between 2mm and 5mm, so that when the smoke just forms condensed acid droplets on the insulating patch 2, the acid droplets can conduct the positive electrode and the negative electrode.
In some embodiments of the present invention, the positive electrode and the negative electrode extend in a zigzag manner on the outer surface of the insulating patch 2 to increase the coverage area of the positive electrode and the negative electrode on the outer surface of the insulating patch 2, so that when the flue gas just forms condensed acidic droplets at any position on the insulating patch 2, the acidic droplets can conduct the positive electrode and the negative electrode, thereby facilitating the improvement of the detection accuracy of the flue gas acid dew point.
In some embodiments of the utility model, the dielectric patch 2 is a dielectric ceramic patch and the electrode is a gold wire electrode or a nickel wire electrode. The insulating ceramic patch, the gold wire electrode and the nickel wire electrode have the advantages of good high temperature resistance, stable chemical property and the like, and are not easy to react with chemical substances in the flue gas, so that the reliability of the flue gas acid dew point measuring device is improved, and the service life of the flue gas acid dew point measuring device is prolonged.
Referring to fig. 1, the flue gas acid dew point measuring device further comprises a protective shell 7, a protective cavity is enclosed by the protective shell 7 and the body portion 1, and the circuit system 6 is arranged in the protective cavity, so that the protection of the circuit system 6 is increased, and the problems that the circuit system 6 is corroded by acidic liquid to cause short circuit and the like are avoided.
Referring to fig. 1 and 2, a fluid passage 11 is provided in the body portion 1, the fluid passage 11 is communicated with a temperature adjusting device 4, the temperature adjusting device 4 is used for conveying a cooling medium into the fluid passage 11, the cooling medium in the fluid passage 11 flows through the front end of the body portion 1 to adjust the temperature of the front end of the body portion 1, and the cooling medium can be liquid and/or gas.
Referring to fig. 1 and 2, the cooling medium is a cooling liquid, the temperature adjusting device 4 includes a circulating water pump 41 and a cooling water tank 42, the cooling water tank 42 stores the cooling liquid, the cooling water tank 42, the circulating water pump 41 and the fluid channel 11 form a loop suitable for the circulation of the cooling liquid, and the circulating water pump 41 can drive the circulation of the cooling liquid, so as to adjust the temperature of the front end of the main body 1.
Preferably, the water tank can be provided with a refrigerating device to cool the cooling water,
in other embodiments of the present invention, the cooling medium is air, and the temperature adjusting device 4 includes a blower fan which makes the cold air from the outside flow through the fluid passage 11 to adjust the temperature of the front end of the body portion 1.
In other embodiments of the present invention, the temperature adjustment device 4 is further provided with a heating device to heat the cooling medium to raise the temperature of the front end of the body portion 1, so as to heat the insulating patch 2, so as to evaporate the acid liquid condensed on the insulating patch 2, thereby repeatedly measuring the acid dew point of the flue gas.
Referring to fig. 1 and 2, the fluid channel 11 includes an inlet channel 111 and a return channel 112, and the return channel 112 is disposed around the inlet channel 111, a flow path a of the cooling medium in the fluid channel 11 is an inlet 1111 of the inlet channel, an outlet 1112 of the inlet channel, an inlet 1121 of the return channel, and an outlet 1122 of the return channel, that is, the inlet channel 111 and the return channel 112 are communicated, the cooling medium flows in from the inlet 1111 of the inlet channel and flows out from the outlet 1122 of the return channel, and meanwhile, since the return channel 112 is disposed around the inlet channel 111, the return channel 112 can block the transmission of high temperature outside the body 1 to the inlet channel 111, so as to ensure that the cooling medium flowing from the inlet channel 111 to the return channel 112 still has a good cooling effect.
In some embodiments of the present invention, the body portion 1 is shaped like a gun for easy taking, the fluid passage 11 is a sleeve structure, the inlet channel 111 is a central tube, and the return channel 112 is an outer tube sleeved on the inlet channel 111.
In other embodiments of the present invention, the return channel 112 is disposed in a spiral around the inlet channel 111.
Referring to fig. 1 and 2, the outlet 1112 of the inlet channel and the inlet 1121 of the return channel are disposed at the front end of the body 1, and meanwhile, since the insulating patch 2 is also disposed at the front end of the body 1, that is, the outlet 1112 of the inlet channel and the inlet 1121 of the return channel are disposed adjacent to the insulating patch 2, the return channel 112 blocks the transmission of external heat to the inlet channel 111 at the outer side of the inlet channel 111, thereby ensuring the cooling effect of the cooling medium on the insulating patch 2.
In some embodiments of the present invention, the processing and collecting device 5 is provided with a data transmission interface, and the flue gas acid dew point information recorded by the processing and collecting device 5 can be exported through the data transmission interface, so that backup and archiving of the flue gas acid dew point information and analysis of the flue gas acid dew point information are facilitated.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example" or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A flue gas acid dew point measuring device is characterized by comprising:
a body portion having a front end adapted to be inserted into a flue gas duct;
the insulating patch is arranged at the front end of the body part and is in contact with the smoke;
a temperature sensor disposed adjacent to the insulating patch;
a temperature adjusting device for adjusting a temperature of a front end of the body portion;
and the processing and collecting device is respectively electrically connected with the insulation patch and the temperature sensor so as to record the acid dew point information of the flue gas according to the change of the electric signal of the insulation patch and the temperature measured by the temperature sensor.
2. The flue gas acid dew point measuring device of claim 1, wherein an electrode is arranged on the insulating patch, and the electrode is electrically connected with the processing and collecting device through a circuit system.
3. The flue gas acid dew point measuring device of claim 2, wherein the electrodes comprise a positive electrode and a negative electrode, and the positive electrode and the negative electrode are arranged at intervals on the outer surface of the insulating patch.
4. The flue gas acid dew point measuring device of claim 3, wherein the positive electrode and the negative electrode extend in a zigzag manner on an outer surface of the insulating patch.
5. The flue gas acid dew point measuring device of claim 2, wherein the insulating patch is an insulating ceramic patch, and the electrode is a gold wire electrode or a nickel wire electrode.
6. The flue gas acid dew point measuring device of claim 2, further comprising a protective shell, wherein a protective cavity is enclosed by the protective shell and the body portion, and the circuit system is disposed in the protective cavity.
7. The flue gas acid dew point measuring device of claim 1, wherein a fluid passage is provided in said body portion, said fluid passage being in communication with said temperature regulating device for delivering a cooling medium into said fluid passage.
8. The flue gas acid dew point measuring device of claim 7, wherein the fluid passage comprises an inlet channel and a return channel, and the return channel is disposed around the inlet channel;
the flow path of the cooling medium in the fluid channel is an inlet of the inlet channel, an outlet of the inlet channel, an inlet of the return channel and an outlet of the return channel.
9. The flue gas acid dew point measuring device of claim 8, wherein the outlet of the inlet channel and the inlet of the return channel are disposed at a front end of the body portion.
10. The flue gas acid dew point measuring device of claim 1, wherein the processing and collecting device is provided with a data transmission interface for deriving the recorded flue gas acid dew point information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121975248.1U CN215985827U (en) | 2021-08-20 | 2021-08-20 | Flue gas acid dew point measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121975248.1U CN215985827U (en) | 2021-08-20 | 2021-08-20 | Flue gas acid dew point measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215985827U true CN215985827U (en) | 2022-03-08 |
Family
ID=80519732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121975248.1U Active CN215985827U (en) | 2021-08-20 | 2021-08-20 | Flue gas acid dew point measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215985827U (en) |
-
2021
- 2021-08-20 CN CN202121975248.1U patent/CN215985827U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN215985827U (en) | Flue gas acid dew point measuring device | |
| CN106482857B (en) | Teletransmission permeability type temperature sensor | |
| CN113551810A (en) | Water-cooling dynamic heat flow sensor | |
| CN113758970A (en) | Flue gas acid dew point measuring device | |
| CN106482858B (en) | Insert telemetering type temperature sensor | |
| CN209214792U (en) | Boiler furnace flue gas temperature measuring equipment and boiler | |
| CN106768160B (en) | Electric heating type urea liquid level sensor | |
| CN211741154U (en) | Packaging structure oxygen sensor | |
| US20230346039A1 (en) | Measuring the temperature of a heating element of an electronic cigarette | |
| CN220039675U (en) | Distributed electrolyte temperature on-line monitoring system | |
| CN108827422B (en) | liquid metal liquid level continuous measuring device and liquid level measuring method thereof | |
| US20220260282A1 (en) | Monitoring system for heated fluids | |
| CN202177613U (en) | Small-sized zirconia sensor for measuring oxygen content of waste gas on unstable temperature field | |
| CN210665792U (en) | Wind speed and direction measuring device and outdoor detection station | |
| CN110609150A (en) | Wind speed and direction measuring device and outdoor detection station | |
| CN217978750U (en) | Steam generator | |
| CN208921248U (en) | A kind of exhaust flow-meter caliberating device | |
| CN218895810U (en) | Fluid detection device | |
| CN219104223U (en) | Large-scale thermal power plant's air preheater temperature-detecting device | |
| CN218066796U (en) | Quick-response temperature sensor | |
| CN219512152U (en) | Self-convection zirconia analyzer probe | |
| CN220932216U (en) | Gas thermocouple structure | |
| CN220582756U (en) | Multifunctional water inlet pipe assembly | |
| CN218821044U (en) | Fluid heater with heat measuring fluid sensor | |
| CN217483731U (en) | Fuel cell gas pressure testing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |