CN219104363U - Dehumidifier regeneration steam heating performance detection device - Google Patents
Dehumidifier regeneration steam heating performance detection device Download PDFInfo
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- CN219104363U CN219104363U CN202320149267.1U CN202320149267U CN219104363U CN 219104363 U CN219104363 U CN 219104363U CN 202320149267 U CN202320149267 U CN 202320149267U CN 219104363 U CN219104363 U CN 219104363U
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Abstract
The utility model discloses a dehumidifier regenerated steam heating performance detection device which comprises a PLC (programmable logic controller) integrated machine, a box body, a temperature sensor group, a pressure sensor group and a steam dryness on-line monitor, wherein the PLC integrated machine comprises a touch screen and a data acquisition module; the PLC integrated machine is arranged on the front end panel of the box body, the touch screen is positioned on the outer side, and the data acquisition module is positioned on the inner side; the temperature sensor group is connected with a temperature wiring terminal of the data acquisition module; the pressure sensor group is connected with a pressure wiring terminal of the data acquisition module, the steam dryness on-line monitor is connected with a dryness wiring terminal of the data acquisition module, and the data acquisition module acquires, converts, calculates and transmits temperature, pressure and steam dryness signals; and the touch screen displays data and provides early warning information. The utility model fully ensures the heat exchange performance and the service life of the steam heat exchanger, effectively improves the temperature control quality of the regenerated air, and reasonably reduces the energy consumption and the running cost of the regenerated steam of the dehumidifier.
Description
Technical Field
The utility model relates to the technical field of energy conservation and consumption reduction of a dehumidifier regenerated steam heat exchanger, in particular to a dehumidifier regenerated steam heating performance detection device.
Background
When the dehumidifier works, the processing fan pumps the moist air into the dehumidifier, and the moist air is sent into the room after condensation pre-dehumidification and runner adsorption dehumidification by the surface-cooling heat exchanger. Meanwhile, the rotating wheel after absorbing moisture is filled with hot air for desorption, so that the adsorption capacity is restored again, and continuous dehumidification is realized. The indoor humidity is controlled in a proper humidity range by circulating and reciprocating in this way.
The steam is used as a heat energy carrier, and has high heat value, fast heat transfer and convenient transportation and control. In the heat exchange process, the latent heat released by the phase change of steam generally reaches 70% -80% of the total heat, and the phase change heat released by the phase change of steam is widely used as a regeneration heat source in the industry of industrial dehumidifiers. In the installation, operation, debugging and maintenance processes of the dehumidifier, the inlet steam dryness, steam pressure and steam temperature of the steam heat exchanger, the central steam pressure of the tube side, the outlet condensate water pressure and the condensate water temperature obviously influence the regenerative heating performance of the steam heat exchanger, and further influence the regenerative energy consumption and the dehumidification performance of the dehumidifier. When the steam moisture content is too large, the vaporization latent heat is reduced, and the heat released by unit mass of steam is reduced. In addition, a condensed water film formed at the time of condensing the steam increases, and thermal resistance increases. Therefore, the excessive water content of the steam can reduce the heat transfer efficiency of the steam heat exchanger and increase the energy consumption of the regenerated steam. The pressure and temperature of saturated steam are in one-to-one correspondence, and the pressure and temperature of superheated steam are not in one-to-one correspondence. In the heat transfer process under the same pressure, the temperature of the superheated steam is always higher than that of saturated steam, and the excessive temperature can accelerate the uneven temperature inside the heat exchanger to form stress, so that equipment deformation and weld joint cracking are caused, equipment internal leakage is formed, and steam energy consumption is increased. On the other hand, superheated steam must be cooled to saturation temperature before releasing the latent heat of vaporization, whereas saturated steam undergoes phase change only to transfer heat. Therefore, compared with superheated steam, the saturated steam has lower and stable temperature and high heat transfer coefficient under the same pressure, is beneficial to the operation of the steam heat exchanger, is convenient for the temperature control of regenerated air and reduces the energy consumption of regenerated steam.
When condensate water is accumulated at the bottom of the steam heat exchanger, water hammer can be generated, and the heat exchanger is easy to be damaged by the impact of the water hammer, so that the service life of equipment is shortened. In addition, the accumulated condensed water reduces the steam flowing space, water films formed outside the coil blocks steam heat exchange, the heat exchange efficiency of the heat exchanger is reduced, and the energy consumption of regenerated steam is increased. At present, most industrial dehumidifiers are only provided with pressure gauges on inlet pipelines of regenerative heating steam heat exchangers, and whether the quality of steam meets the regenerative heating requirement of the dehumidifier cannot be diagnosed rapidly and accurately. Therefore, the scheme saves cost, but can not quickly detect the heating performance of the regenerated steam of the dehumidifier and make early warning feedback, has poor reliability and low accuracy, and can not meet the application requirements.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the present utility model aims to solve the technical problems of high dynamic response speed, good stability, high measurement accuracy and simple structure by diagnosing the heating performance of the regenerated steam based on the actual detection result.
The utility model provides a dehumidifier regenerated steam heating performance detection device which comprises a PLC (programmable logic controller) integrated machine, a box body, a temperature sensor group, a pressure sensor group and a steam dryness on-line monitor, wherein the PLC integrated machine comprises a touch screen and a data acquisition module; the PLC integrated machine is arranged on the front end panel of the box body, the touch screen is positioned on the outer side, and the data acquisition module is positioned on the inner side; the temperature sensor group is connected with a temperature wiring terminal of the data acquisition module and is used for measuring the inlet steam temperature and the outlet condensate water temperature of the steam heat exchanger; the pressure sensor group is connected with a pressure wiring terminal of the data acquisition module and is used for measuring the inlet steam pressure, the tube side center steam pressure and the outlet condensate water pressure of the steam heat exchanger; the steam dryness online monitor is connected with the dryness connecting terminal of the data acquisition module and is used for measuring the dryness of the steam at the inlet of the steam heat exchanger; the data acquisition module acquires, converts, calculates and transmits temperature, pressure and steam dryness signals; and the touch screen displays data and provides early warning information.
Preferably, the temperature sensor group comprises a first temperature sensor and a second temperature sensor; the first temperature sensor is used for measuring the inlet steam temperature of the dehumidifier regeneration steam heat exchanger; the second temperature sensor is used for measuring the temperature of condensate water at the outlet of the dehumidifier regeneration steam heat exchanger.
Preferably, the pressure sensor group comprises a first pressure sensor, a second pressure sensor and a third pressure sensor; the first pressure sensor is used for measuring the inlet steam pressure of the dehumidifier regeneration steam heat exchanger; the second pressure sensor is used for measuring the pressure of the condensed water at the outlet of the dehumidifier regeneration steam heat exchanger; the third pressure sensor is used for measuring the tube side center steam pressure.
Preferably, the box body is provided with a power interface and a switch interface; the power interface is arranged on the side end panel of the box body and is connected with an external power supply of the device to supply power for the device; the switch interface is arranged on the side end panel of the box body and controls the on-off of the circuit of the device.
Preferably, the switch interface is arranged in parallel with the power interface.
Preferably, the box body is provided with a wiring hole, the wiring hole is positioned on a side end panel of the box body, and the input signal wires of temperature and pressure are connected into the data acquisition module inside the box body.
Preferably, a wiring groove and a direct current power supply are arranged in the box body, the wiring groove is used for placing and protecting the internal circuit of the box body, and the direct current power supply is connected with a power supply wiring terminal of the data acquisition module.
Preferably, the box body is provided with heat dissipation holes, and the heat dissipation holes are arranged on the front end panel of the box body and are distributed in a rectangular array.
The utility model provides a device for detecting the heating performance of regenerative steam of a dehumidifier, which is used for diagnosing the advantages and disadvantages of the heating performance of the regenerative steam based on the actual detection result, and has the advantages of high dynamic response speed, good stability, high measurement precision and simple structure. Meanwhile, by means of the PLC touch screen integrated machine, the operation state of the steam heat exchanger is monitored in real time, the operation state comprises the pressure, the temperature and the dryness of inlet steam, the pressure of tube side center steam and the pressure and the temperature of outlet condensate water, abnormal immediate early warning is achieved, the detection operation of the heating performance of the regenerated steam is more convenient and efficient, and the device is suitable for popularization and use in engineering practice.
The utility model provides a device for detecting the heating performance of regenerated steam of a dehumidifier, which fully ensures the heat exchange performance and the service life of a steam heat exchanger, effectively improves the temperature control quality of regenerated air and reasonably reduces the energy consumption and the running cost of the regenerated steam of the dehumidifier.
The conception, specific structure, and technical effects of the present utility model will be further described with reference to the accompanying drawings to fully understand the objects, features, and effects of the present utility model.
Drawings
FIG. 1 is a schematic view of the outside construction of a preferred embodiment of the present utility model;
FIG. 2 is a schematic view of the inside structure of a preferred embodiment of the present utility model;
FIG. 3 is a schematic diagram of a sensor according to a preferred embodiment of the present utility model.
Wherein, the liquid crystal display device comprises a liquid crystal display device,
1. a case;
2. a heat radiation hole;
3. a touch screen;
4. a wiring hole;
5. a power interface;
6. a switch interface;
7. a communication port;
8. a PLC download port;
9. an HMI download port;
10. a direct current power supply;
11. wiring grooves;
12、P 1 a first wiring terminal;
13、P 1 a second wiring terminal;
14、T 1 a first wiring terminal;
15、T 1 a second wiring terminal;
16. a first X binding post;
17. a X connecting terminal II;
18、P 2 a first wiring terminal;
19、P 2 a second wiring terminal;
20. a direct current power supply wiring terminal I;
21. a direct current power supply wiring terminal II;
22. an alternating current power supply wiring terminal I;
23. an alternating current power supply wiring terminal II;
24、P 3 a first wiring terminal;
25、P 3 a second wiring terminal;
26、T 3 a first wiring terminal;
27、T 3 a second wiring terminal;
28. a data acquisition module;
29. a first pressure sensor;
30. a first temperature sensor;
31. an online dryness monitor;
32. a third pressure sensor;
33. a second pressure sensor;
34. and a second temperature sensor.
Detailed Description
The following description of the preferred embodiments of the present utility model refers to the accompanying drawings, which make the technical contents thereof more clear and easy to understand. The present utility model may be embodied in many different forms of embodiments and the scope of the present utility model is not limited to only the embodiments described herein.
In the drawings, like structural elements are referred to by like reference numerals and components having similar structure or function are referred to by like reference numerals. The dimensions and thickness of each component shown in the drawings are arbitrarily shown, and the present utility model is not limited to the dimensions and thickness of each component. The thickness of the components is exaggerated in some places in the drawings for clarity of illustration.
As shown in fig. 1 and 2, the present preferred embodiment provides a kind ofThe dehumidifier regenerated steam heating performance detection device comprises a PLC touch screen integrated machine, a box body 1, a temperature sensor group, a pressure sensor group and a steam dryness on-line monitor 31, wherein the PLC integrated machine comprises a touch screen 3 and a data acquisition module 28; the PLC integrated machine is arranged on the front end panel of the box body 1, the touch screen 3 is positioned on the outer side, and the data acquisition module 28 is positioned on the inner side; the temperature sensor group is connected with a temperature wiring terminal of the data acquisition module 28, and the temperature wiring terminal comprises T 1 Binding post one 14, T 1 Binding post two 15, T 3 Binding post one 26, T 3 A second connecting terminal 27 for measuring the inlet steam temperature and the outlet condensate temperature of the steam heat exchanger; the pressure sensor group is connected with a pressure connection terminal of the data acquisition module 28, and the pressure connection terminal comprises P 1 Binding post one 12, P 1 Terminal two 13, P 2 Binding post one 18, P 2 Binding post two 19, P 3 Binding post one 24, P 3 The second wiring terminal 25 is used for measuring the inlet steam pressure, the tube side center steam pressure and the outlet condensate water pressure of the steam heat exchanger; the steam dryness online monitor 31 is connected with a dryness binding post of the data acquisition module 28, wherein the dryness binding post comprises a first x binding post 16 and a second hiring binding post 17, and is used for measuring the dryness of the steam at the inlet of the steam heat exchanger; the data acquisition module 28 acquires, converts, computes and transmits temperature, pressure and steam dryness signals; the touch screen 3 displays data and provides early warning information.
As shown in fig. 2 and 3, the temperature sensor group includes a first temperature sensor 30 and a second temperature sensor 34; the first temperature sensor 30 is used for measuring the inlet steam temperature of the dehumidifier regeneration steam heat exchanger; the second temperature sensor 34 is used for measuring the temperature of condensed water at the outlet of the dehumidifier regeneration steam heat exchanger. The pressure sensor group includes a first pressure sensor, a second pressure sensor 33, and a third pressure sensor 32; the first pressure sensor 29 is used for measuring the inlet steam pressure of the dehumidifier regeneration steam heat exchanger; the second pressure sensor 33 is used for measuring the condensing water pressure at the outlet of the dehumidifier regeneration steam heat exchanger; the third pressure sensor 32 is used to measure the tube side center vapor pressure.
As shown in fig. 2, a power interface 5 and a switch interface 6 are arranged on the box body 1; the power interface 5 is arranged on the side end panel of the box body 1 and is connected with an external power supply of the device to supply power to the device; the switch interface 6 is arranged on the side end panel of the box body 1 and controls the on-off of a circuit of the device. The switch interface 6 is arranged in parallel with the power interface 5. The box 1 is provided with a wiring hole 4, the wiring hole 4 is positioned on the side end panel of the box 1, and the input signal wires of temperature and pressure are connected into the data acquisition module 28 inside the box 1.
In addition, the input signal lines of the steam pressure at the inlet, the temperature and the steam dryness of the steam heat exchanger, the steam pressure at the center of the tube pass, the pressure of the condensed water at the outlet and the temperature are all connected into the box body through the wiring holes 4, and the data acquisition module 28 of the PLC all-in-one machine, the communication line, the PLC program downloading line and the human-machine interface (HMI) program downloading line opened by the touch screen 3 are all connected into an external computer through the wiring holes 4.
The heat dissipation holes 2 are formed in the front end panel of the box body 1, the rectangular array is arranged, and when the device operates, the temperature of the interior of the box body 1 is reduced through the heat dissipation holes 2. The box body 1 is internally provided with a wire slot 11 and a direct current power supply 10, the wire slot 11 is used for placing and protecting the internal circuit of the box body 1, and the direct current power supply 10 is connected with a corresponding wiring terminal of the data acquisition module 28 to provide voltage-stabilizing direct current output for the device.
Wherein the inlet steam saturation temperature T s And P 1 One-to-one correspondence, T is the thermal parameter of the reference saturated steam s The fitting formula of (2) is:
T s ＝63.925P 1 3 -149P 1 2 +165.15P 1 +105.72；
in the method, in the process of the utility model,P 1 for heat exchanger inlet steam pressure, P 1 ＝0.1～0.9MPa；
Maximum regeneration temperature T of dehumidifier remax Considering the heat exchange temperature difference of the steam heat exchanger between 20 and 25 ℃, T remax The calculation method of (1) is as follows:
T remax ＝T S -23℃，
wherein T is S Is the inlet steam saturation temperature;
Δp is the pressure difference between the tube side center steam pressure and the outlet condensate pressure, and the calculation formula is:
ΔP＝P 2 -P 3 ，
wherein P2 is the central steam pressure of the tube side, and P3 is the outlet condensate pressure;
delta T is the superheat degree of inlet steam, and the calculation formula is as follows:
ΔT＝T 1 -T S ，
wherein T is S For inlet steam saturation temperature, T 1 Is the inlet steam temperature.
The data acquisition module 28 of the PLC all-in-one machine is provided with a connecting terminal of a DC power supply point and an AD point, a communication port 7, a PLC download port 8 and an HMI download port 9, and is mainly used for realizing acquisition, conversion, operation and transmission of temperature, pressure and dryness signals of the steam heat exchanger.
The first temperature sensor 30, the first pressure sensor 29 and the online dryness detector 31 are respectively arranged at the inlet steam pipe section of the steam heat exchanger, the third pressure sensor 32 is arranged at the central steam pipe section of the tube side, the second temperature sensor 34 and the second pressure sensor 33 are respectively arranged at the outlet condensate pipe section, and the temperature sensors, the pressure sensors and the input signal wires of the online dryness detector 31 are respectively connected to the data acquisition module 28 of the PLC all-in-one machine of the regenerative steam heating performance detection device of the dehumidifier.
When the steam heat exchanger operates, P is displayed on the human-computer interface of the touch screen 3 1 、T 1 、T s 、ΔT、T remax 、χ、P 2 、P 3 ΔP and T 3 And monitoring ΔT, χ, ΔP and T 3 。
When the steam heat exchanger is in normal operation, the inlet steam is saturated steam (within a certain error range, deltaT=0) and χ is greater than 0.85, and the outlet has no condensate accumulation (DeltaP > 0, T) 2 ＝60～80℃)。
When the running state of the steam heat exchanger is any one of the following conditions, the running state is abnormal, and the detection device can immediately send out early warning information.
(1) Pressure (gauge pressure) P of regeneration steam of industrial dehumidifier 1 Typically in the range of 0.1 to 0.9MPa, when the inlet steam is superheated steam, i.e. Δt=t 1 -T S More than 0, the heat exchange efficiency of the steam heat exchanger is reduced, the regenerative heating performance is deteriorated, and the touch screen can prompt steam overheat early warning;
(2) The dryness of saturated steam adopted by a regeneration heat source of the industrial dehumidifier is generally above 0.85, when inlet steam is saturated steam, namely delta T=0 and chi is less than 0.8, the heat exchange efficiency of the steam heat exchanger is reduced, the regeneration heating performance is deteriorated, and the touch screen can prompt steam dryness early warning;
(3) When the opening of the steam control valve is reduced, the steam pressure P in the heat exchanger can be caused 2 Equal to or less than the condensed water pressure P 3 Resulting in condensate water not being able to drain from the heat exchanger, i.e. Δp=p 2 -P 3 Less than or equal to 0, the heat exchange efficiency of the steam heat exchanger is reduced, the regenerative heating performance is deteriorated, and the touch screen can prompt the outlet condensate water to store pressure early warning;
(4) The average temperature of the steam condensate is generally in the range of 60-80 ℃, and when the outlet condensate temperature T 3 When the temperature is higher than 85 ℃, the heat exchange efficiency of the steam heat exchanger is reduced, the regenerative heating performance is deteriorated, and the touch screen can prompt the outlet condensate water to store temperature early warning.
The foregoing describes in detail preferred embodiments of the present utility model. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the utility model without requiring creative effort by one of ordinary skill in the art. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.
Claims (8)
1. The device for detecting the heating performance of the regenerated steam of the dehumidifier is characterized by comprising a PLC touch screen integrated machine, a box body, a temperature sensor group, a pressure sensor group and a steam dryness on-line monitor, wherein the PLC touch screen integrated machine comprises a touch screen and a data acquisition module; the PLC touch screen integrated machine is arranged on the front end panel of the box body, the touch screen is positioned on the outer side, and the data acquisition module is positioned on the inner side; the temperature sensor group is connected with a temperature wiring terminal of the data acquisition module; the pressure sensor group is connected with a pressure wiring terminal of the data acquisition module, the steam dryness on-line monitor is connected with a dryness wiring terminal of the data acquisition module, and the data acquisition module acquires, converts, calculates and transmits temperature, pressure and steam dryness signals; and the touch screen displays data and provides early warning information.
2. The dehumidifier regeneration steam heating performance detection apparatus of claim 1, wherein the temperature sensor set comprises a first temperature sensor and a second temperature sensor; the first temperature sensor is used for measuring the inlet steam temperature of the dehumidifier regeneration steam heat exchanger; the second temperature sensor is used for measuring the temperature of condensate water at the outlet of the dehumidifier regeneration steam heat exchanger.
3. The dehumidifier regeneration steam heating performance test device of claim 1, wherein the pressure sensor set comprises a first pressure sensor, a second pressure sensor, and a third pressure sensor; the first pressure sensor is used for measuring the inlet steam pressure of the dehumidifier regeneration steam heat exchanger; the second pressure sensor is used for measuring the pressure of the condensed water at the outlet of the dehumidifier regeneration steam heat exchanger; the third pressure sensor is used for measuring the tube side center steam pressure.
4. The dehumidifier regenerated vapor heating performance detection apparatus according to claim 1, wherein the box body is provided with a power interface and a switch interface; the power interface is arranged on the side end panel of the box body and is connected with an external power supply of the device to supply power for the device; the switch interface is arranged on the side end panel of the box body and controls the on-off of the circuit of the device.
5. The dehumidifier regenerated vapor heating performance testing apparatus according to claim 4, wherein the switch interface is arranged in parallel with the power interface.
6. The apparatus for detecting the heating performance of regenerative steam of a dehumidifier as claimed in claim 1, wherein the case is provided with a wiring hole, the wiring hole is located at a side end plate of the case, and input signal lines of temperature and pressure are connected to the data acquisition module inside the case.
7. The apparatus for detecting the heating performance of the regenerated steam of the dehumidifier as claimed in claim 1, wherein a wiring groove and a direct current power supply are arranged in the box body, the wiring groove is used for arranging and protecting the internal circuit of the box body, and the direct current power supply is connected with a power supply wiring terminal of the data acquisition module.
8. The apparatus for detecting regenerative steam heating performance of a dehumidifier as claimed in any one of claims 1 to 7, wherein the case is provided with heat dissipation holes, and the heat dissipation holes are arranged on a front panel of the case in a rectangular array arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320149267.1U CN219104363U (en) | 2023-01-16 | 2023-01-16 | Dehumidifier regeneration steam heating performance detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320149267.1U CN219104363U (en) | 2023-01-16 | 2023-01-16 | Dehumidifier regeneration steam heating performance detection device |
Publications (1)
| Publication Number | Publication Date |
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| CN219104363U true CN219104363U (en) | 2023-05-30 |
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ID=86455720
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320149267.1U Active CN219104363U (en) | 2023-01-16 | 2023-01-16 | Dehumidifier regeneration steam heating performance detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219104363U (en) |
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2023
- 2023-01-16 CN CN202320149267.1U patent/CN219104363U/en active Active
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