CN216900327U - Industrial boiler saturated steam humidity measuring device - Google Patents
Industrial boiler saturated steam humidity measuring device Download PDFInfo
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- CN216900327U CN216900327U CN202121043353.1U CN202121043353U CN216900327U CN 216900327 U CN216900327 U CN 216900327U CN 202121043353 U CN202121043353 U CN 202121043353U CN 216900327 U CN216900327 U CN 216900327U
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Abstract
The utility model relates to the technical field of boiler saturated steam humidity measurement, in particular to an industrial boiler saturated steam humidity measuring device which comprises a heating barrel and a heat insulation assembly, wherein one end of the heating barrel is provided with a steam inlet, the other end of the heating barrel is provided with a steam outlet, the steam inlet end is provided with a switch valve, the steam outlet end is provided with a vacuumizing piece, and a first heating assembly, a first temperature measuring assembly and a pressure measuring assembly are arranged in the vacuumizing piece; the heat preservation subassembly includes insulation cover, second heating element and second temperature measurement spare, and the insulation cover ring is established heating barrel periphery is equipped with the cavity between insulation cover and the heating barrel, and the cavity intussuseption is filled with heat-conducting liquid, and second heating element and second temperature measurement spare are located the cavity. The measuring device has the advantages of convenient sampling, low manufacturing cost, high measuring precision and wide measuring range, and can measure the steam humidity of the industrial boiler on line or off line.
Description
Technical Field
The utility model relates to the technical field of boiler saturated steam humidity measurement, in particular to a device for measuring saturated steam humidity of an industrial boiler.
Background
Steam humidity is an important factor for representing steam quality, and not only influences the economy and safety of boiler operation, but also influences subsequent processes and product quality.
At present, steam humidity measurement is only applied to a small amount of steam turbines at the last stage of a thermal power station, and measuring devices are expensive in manufacturing cost and are inconvenient to measure due to fixed devices. The steam humidity of the industrial boiler changes rapidly, the change range is wide, the initial condition changes greatly and often needs off-line detection, and the above factors cause that the existing measuring device is not suitable for steam humidity measurement of the industrial boiler, thus causing the vacancy of the industrial boiler in steam humidity detection.
Therefore, it is necessary to design a device which has high automation degree and convenient use and can measure the saturated steam humidity of the industrial boiler on line and off line.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a device and a method for measuring the humidity of saturated steam of an industrial boiler, which can measure the humidity of the saturated steam of the industrial boiler.
In order to achieve the purpose, the technical scheme adopted by the utility model is to provide a saturated steam humidity measuring device for an industrial boiler, which comprises a heating barrel and a heat insulation component, wherein one end of the heating barrel is provided with a steam inlet, the other end of the heating barrel is provided with a steam outlet, the steam inlet end is provided with a switch valve, the steam outlet end is provided with a vacuumizing piece, and a first heating component, a first temperature measuring component and a pressure measuring component are arranged in the vacuumizing piece; the heat preservation subassembly includes insulation cover, second heating element and second temperature measurement spare, the insulation cover ring is established heating barrel periphery, the insulation cover with be equipped with the cavity between the heating barrel, the cavity intussuseption is filled with heat-conducting liquid, the second heating element with second temperature measurement spare is located in the cavity.
Furthermore, a plurality of heating wires are adopted in the first heating assembly, and the heating wires are annularly arranged on the inner wall of the heating barrel.
Furthermore, a plurality of the heater strips are arranged along the longitudinal distribution of the inner wall of the heating barrel and are uniformly and annularly arranged on the inner wall of the heating barrel.
Further, first temperature measurement subassembly is in including setting up be close to the top position in the heating bucket at least two sets of first temperature measurement spare and setting and be in be close to the bottom position in the heating bucket at least two sets of first temperature measurement spare, and upper and lower first temperature measurement spare dislocation set.
Further, the pressure measurement subassembly includes at least two sets of pressure measurement spare, just the position that is close to top and bottom in the heating bucket is equipped with a set ofly at least pressure measurement spare, and from top to bottom pressure measurement spare dislocation set.
Further, a power measuring assembly for measuring the electric power of the first heating assembly is arranged in the heating barrel.
Furthermore, a stirring device for stirring the heat-conducting liquid is arranged in the cavity.
Furthermore, the heating barrel also comprises a control system which is respectively and electrically connected with the parts in the heating barrel and the parts in the heat preservation sleeve.
The utility model has the beneficial effects that:
1. firstly, vacuumizing the heating barrel through a vacuumizing part; then introducing saturated steam of the industrial boiler into the vacuumized heating barrel through pipeline connection, and closing the switch valve when the steam pressure entering the heating barrel is consistent with the steam pressure in the boiler; and finally, the first heating component heats the steam in the heating barrel, the heating is stopped when the specified superheat degree is reached, and the first temperature measuring component and the pressure measuring component start to measure. The second heating assembly heats the heat conducting liquid in the cavity to make the temperature of the heat conducting liquid be the same as that in the heating barrel. The measuring device has the advantages of convenient sampling, low manufacturing cost, high measuring precision and wide measuring range, and can measure the steam humidity of the industrial boiler on line or off line.
2. The heating barrel adopts slender stainless steel material, and first heating element adopts a plurality of heater strips, and a plurality of heater strips are along the longitudinal distribution of heating barrel inner wall, and evenly encircle and establish on the inner wall of heating barrel. The heating barrel inner ring circumference aspect multiple spot is heated evenly, guarantees the measuring accuracy.
3. Be equipped with the agitating unit who stirs heat-conducting liquid in the cavity, adopt heat-conducting liquid stirring heating mode, can make the whole quick even intensification of heat-conducting liquid on the one hand, reach appointed temperature, on the other hand heat-conducting liquid is whole to be stirred and flows, can keep warm to the whole even heating of heating bucket outer wall, prevents that the heat from scattering and disappearing, guarantees the heat preservation effect in order to ensure measurement accuracy.
4. The control system adopts a PCB automatic control system to control the whole test process, inputs initial test conditions, sets a measurement time interval, displays measurement data and a final result, and performs summary analysis on the final result so as to adapt to the conditions that the steam humidity of the industrial boiler changes rapidly, the range is wide, the initial conditions have large differences and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic view of an overall structure of a saturated steam humidity measuring device of an industrial boiler according to an embodiment of the present invention.
Description of reference numerals:
1. a heating barrel; 11. a steam inlet; 12. a steam outlet; 13. a connecting pipe; 14. heating wires; 15. a first temperature measuring member; 16. a pressure measurement member; 17. a power measurement component; 2. an on-off valve; 3. vacuumizing the part; 4. a heat preservation assembly; 41. a thermal insulation sleeve; 42. a second heating assembly; 43. a second temperature measuring member; 44. a heat conducting liquid; 5. a control system; 51. and connecting the wires.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
Referring to fig. 1, the saturated steam humidity measuring device for the industrial boiler provided by the embodiment of the present invention includes a heating barrel 1 and a heat preservation assembly 4, wherein one end of the heating barrel 1 is provided with a steam inlet 11, the other end is provided with a steam outlet 12, the end of the steam inlet 11 is provided with a switch valve 2, the end of the steam outlet 12 is provided with a vacuum pumping member 3, and a first heating assembly, a first temperature measuring assembly and a pressure measuring assembly are arranged in the vacuum pumping member; the heat preservation assembly 4 comprises a heat preservation sleeve 41, a second heating assembly 42 and a second temperature measurement assembly, the heat preservation sleeve 41 is annularly arranged on the periphery of the heating barrel 1, a cavity is formed between the heat preservation sleeve 41 and the heating barrel 1, heat conducting liquid 44 is filled in the cavity, and the second heating assembly 42 and the second temperature measurement assembly are located in the cavity.
Firstly, vacuumizing the heating barrel 1 through a vacuumizing part 3; then, the saturated steam of the industrial boiler is led into the heating barrel 1 after vacuum pumping through pipeline connection, and when the steam pressure entering the heating barrel 1 is consistent with the steam pressure in the boiler, the switch valve 2 is closed; and finally, the first heating component heats the steam in the heating barrel 1, the heating is stopped when the specified superheat degree is reached, and the first temperature measuring component and the pressure measuring component start to measure. The second heating component 42 heats the heat-conducting liquid 44 in the cavity to make the temperature of the heat-conducting liquid be the same as that in the heating barrel 1; after the test is completed, the vacuum is evacuated using the evacuation member 3. The measuring device has the advantages of convenient sampling, low manufacturing cost, high measuring precision and wide measuring range, and can measure the steam humidity of the industrial boiler on line or off line.
Specifically, heating barrel 1 steam inlet 11 one end is equipped with connecting pipe 13, and connecting pipe 13 adopts 3 m's heat preservation pipeline, and the temperature in the connecting pipe 13 keeps unanimous with steam temperature, guarantees that the sample is convenient and steam can not change in the sample process. In the embodiment, the switch valve 2 adopts an electromagnetic valve, the vacuumizing part 3 adopts a vacuum pump, and the electromagnetic valve and the vacuum pump control the flow of steam to ensure the testing precision. Heating barrel 1 adopts slender type stainless steel, and first heating element adopts a plurality of heater strips 14, and a plurality of heater strips 14 are along the longitudinal distribution of heating barrel 1 inner wall, and evenly encircle and establish on the inner wall of heating barrel 1. The heating barrel 1 is heated uniformly at multiple points on the circumference of the inner ring, so that the testing precision is ensured. The first temperature measuring assembly comprises at least two groups of first temperature measuring pieces 15 which are arranged in the heating barrel 1 and close to the top end position and at least two groups of first temperature measuring pieces 15 which are arranged in the heating barrel 1 and close to the bottom end position, and the upper first temperature measuring pieces 15 and the lower first temperature measuring pieces 15 are arranged in a staggered mode. The pressure measurement assembly comprises at least two groups of pressure measurement pieces 16, at least one group of pressure measurement pieces 16 are arranged at positions close to the top end and the bottom end in the heating barrel 1, and the upper pressure measurement piece 16 and the lower pressure measurement piece 16 are arranged in a staggered mode. And the temperature and the pressure are collected at multiple points, so that the test precision is ensured. A power measuring assembly 17 for measuring the electric power of the first heating assembly is also arranged in the heating barrel 1.
Further, a stirring device for stirring the heat transfer liquid 44 is provided in the cavity.
Specifically, the second heating assembly 42 adopts a plurality of heating wires 14, the plurality of heating wires 14 are uniformly arranged on the inner wall of the heat insulation sleeve 41 in a ring manner, two groups of second temperature measuring pieces 43 are arranged in the cavity, and the two groups of second temperature measuring pieces are arranged in a staggered manner. The temperature is collected in multiple points, so that the test precision is ensured, and the temperature of the heated heat-conducting liquid 44 is basically consistent with the temperature in the heating barrel 1. Agitating unit can adopt (mixing) shaft or stirring worm wheel, adopts heat conduction liquid 44 heating method while stirring, can be so that the whole quick even intensification of heat conduction liquid 44 on the one hand, reaches appointed temperature, and on the other hand heat conduction liquid 44 wholly stirs and flows, can keep warm to the whole even heating of 1 outer wall of heating bucket, prevents that the heat from scattering and disappearing, guarantees the heat preservation effect in order to ensure measurement accuracy.
Further, the industrial boiler saturated steam humidity measuring device further comprises a control system 5, and the control system 5 is electrically connected with the parts in the heating barrel 1 and the parts in the heat insulation sleeve 41 respectively through a connecting wire 51.
Specifically, the control system 5 uses a PCB autonomous system to control the whole testing process, and the PCB autonomous system performs automatic control on the whole measuring process, including the opening and closing of the switch valve 2, and the opening and closing of the heating of the first and second heating assemblies 42. In addition, the PLC automatic control system can input initial test conditions, set a measurement time interval, display measurement data and a final result, and perform summary analysis on the final result so as to adapt to the conditions that the steam humidity of the industrial boiler changes rapidly, the range is wide, the initial conditions have large differences and the like.
Example 2
The method for measuring the saturated steam humidity of the industrial boiler provided by the embodiment of the utility model adopts the device for measuring the saturated steam humidity of the industrial boiler in the embodiment 1, and comprises the following measuring steps:
firstly, vacuumizing the heating barrel 1 through a vacuumizing part 3;
then, the saturated steam of the industrial boiler is led into the heating barrel 1 after vacuum pumping through pipeline connection, and when the steam pressure entering the heating barrel 1 is consistent with the steam pressure in the boiler, the switch valve 2 is closed;
finally, the first heating component heats the steam in the heating barrel 1, when the steam reaches the designated superheat degree, the heating is stopped, and the first temperature measuring component and the pressure measuring component start to measure; the second heating assembly 42 heats the heat conducting liquid 44 in the cavity to the same temperature as that in the heating barrel 1.
Specifically, the switch valve 2 adopts the solenoid valve in this embodiment, and evacuation piece 3 adopts the vacuum pump, through the vacuum pump with the interior evacuation of heating barrel 1, industrial boiler saturated steam leads to in heating barrel 1 through connecting pipe 13, and connecting pipe 13 adopts the heat preservation pipeline, and the temperature in the connecting pipe 13 keeps unanimous with steam temperature, avoids steam temperature to receive external environment influence and leads to temperature variation, guarantees that sample convenience and steam can not change in the sample process. The first heating component adopts a plurality of heating wires 14, and is uniformly and annularly arranged on the inner wall of the heating barrel 1. In the heating tub 1, when the steam pressure entered is identical to the steam pressure in the boiler, it is closed by the solenoid valve, and then the heating tub 1 is heated by a plurality of heating wires 14 attached to the longitudinal direction of the inner wall of the heating tub 1, and the heating is stopped when the superheat degree 50 ℃ is reached. The first temperature measuring assembly comprises four groups of first temperature measuring components 15, the pressure measuring assembly comprises two groups of pressure measuring components 16 and four groups of first temperature measuring components 15, the two groups of pressure measuring components 16 are respectively arranged in a staggered mode, the temperature and the pressure of steam in the heating barrel 1 are measured, and the heating power is measured by the arranged electric power measuring component 17. Meanwhile, in the cavity outside the heating barrel 1, the heat conducting liquid 44 is filled and the stirring device is arranged, the second heating assembly 42 adopts the heating wire 14, and the heating wire 14 heats the heat conducting liquid 44, so that the temperature of the heat conducting liquid 44 is the same as that in the heating barrel 1. The entire measuring device is enclosed by an outer jacket 41. At the moment, the measurement of relevant data of saturated steam can be completed, and the measurement of humidity is realized.
Further, after the above measurement process is completed, the steam in the heating barrel 1 is removed by the vacuum pump, and when the preset time interval is reached, the next test is started again.
Specifically, the industrial boiler saturated steam humidity measuring device further comprises a control system 5, the control system 5 adopts a PCB automatic control system, all test data are collected to the PCB automatic control system through a data acquisition system, and a final steam humidity value is calculated through a pre-implanted formula. The PCB automatic control system also needs to automatically control the whole measuring process, including the opening and closing of the electromagnetic valve, the heating pipeline, the heating barrel 1 and the heating of the heat-conducting oil. In addition, the PCB automatic control system can also perform the functions of inputting test initial conditions, setting test time intervals, displaying acquired data and final test results, summarizing the final results, drawing curves and the like.
In the saturated steam humidity measuring method of the embodiment of the utility model, steam is introduced into the heating barrel 1 through the connecting pipe 13, and the steam is heated to a certain degree of superheat by adopting electric heating. The periphery of the heating barrel 1 is provided with flowing heat-conducting liquid 44 for heat preservation of the heating barrel 1, meanwhile, the heat-conducting liquid 44 needs to be heated to keep the same temperature as steam, and finally, parameters such as temperature, pressure, electric power and the like are collected, and the steam humidity value is calculated through a thermal calculation formula. After the test was completed, the vapor was removed with a vacuum pump. The measuring method has the advantages of controllable error within +/-0.5%, high automation degree, convenient use and capability of measuring the saturated steam humidity of the industrial boiler on line and off line.
The embodiments of the present invention are all preferred embodiments of the present invention, and the scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered by the protection scope of the utility model.
Claims (8)
1. The utility model provides an industrial boiler saturated steam humidity measuring device which characterized in that includes:
the steam heating device comprises a heating barrel (1), wherein one end of the heating barrel is provided with a steam inlet (11), the other end of the heating barrel is provided with a steam outlet (12), the end of the steam inlet (11) is provided with a switch valve (2), the end of the steam outlet (12) is provided with a vacuumizing piece (3), and a first heating assembly, a first temperature measuring assembly and a pressure measuring assembly are arranged in the vacuumizing piece (3);
the heat preservation assembly (4) comprises a heat preservation sleeve (41), a second heating assembly (42) and a second temperature measuring piece (43), wherein the heat preservation sleeve (41) is annularly arranged on the periphery of the heating barrel (1), a cavity is formed between the heat preservation sleeve (41) and the heating barrel (1), heat conducting liquid (44) is filled in the cavity, and the second heating assembly (42) and the second temperature measuring piece (43) are located in the cavity.
2. The saturated steam humidity measuring device of the industrial boiler according to claim 1, characterized in that the first heating assembly adopts a plurality of heating wires (14), and a plurality of heating wires (14) are annularly arranged on the inner wall of the heating barrel (1).
3. The saturated steam humidity measuring device of the industrial boiler according to claim 2, characterized in that a plurality of heating wires (14) are distributed along the longitudinal direction of the inner wall of the heating barrel (1) and uniformly and annularly arranged on the inner wall of the heating barrel (1).
4. The saturated steam humidity measuring device of the industrial boiler according to the claim 1, characterized in that the first temperature measuring assembly comprises at least two sets of first temperature measuring pieces (15) arranged in the heating barrel (1) near the top end position and at least two sets of first temperature measuring pieces (15) arranged in the heating barrel (1) near the bottom end position, and the upper and lower first temperature measuring pieces (15) are arranged in a staggered way.
5. The saturated steam humidity measuring device of the industrial boiler according to the claim 1, characterized in that the pressure measuring assembly comprises at least two sets of pressure measuring pieces (16), and at least one set of the pressure measuring pieces (16) is arranged in the heating barrel (1) near the top end and the bottom end, and the upper and the lower pressure measuring pieces (16) are arranged in a staggered way.
6. The industrial boiler saturated steam humidity measuring device according to claim 1, characterized in that a power measuring component (17) for measuring the electric power of the first heating component is further arranged in the heating barrel (1).
7. The apparatus for measuring saturated steam humidity of industrial boiler according to claim 1, wherein a stirring means for stirring the heat transfer liquid (44) is provided in the cavity.
8. The industrial boiler saturated steam humidity measuring device according to claim 1, characterized by further comprising a control system (5), wherein the control system (5) is electrically connected with the components in the heating barrel (1) and the components in the thermal insulation sleeve (41), respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121043353.1U CN216900327U (en) | 2021-05-14 | 2021-05-14 | Industrial boiler saturated steam humidity measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121043353.1U CN216900327U (en) | 2021-05-14 | 2021-05-14 | Industrial boiler saturated steam humidity measuring device |
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| Publication Number | Publication Date |
|---|---|
| CN216900327U true CN216900327U (en) | 2022-07-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121043353.1U Active CN216900327U (en) | 2021-05-14 | 2021-05-14 | Industrial boiler saturated steam humidity measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216900327U (en) |
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2021
- 2021-05-14 CN CN202121043353.1U patent/CN216900327U/en active Active
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