Sealing performance detection device, rotary dehumidifier, and sealing performance detection method

Abstract

The present application relates to the technical field of dehumidification drying, and discloses a sealing performance detection device, a rotary dehumidifier and a sealing performance detection method. The sealing performance detection device comprises: a first detector, which is used for detecting the inlet air temperature and humidity of the regeneration area of the rotary dehumidifier; a second detector, which is used for detecting the outlet air temperature and humidity of the regeneration area of the rotary dehumidifier; and a third detector. The inlet and outlet of the regeneration area of the rotary dehumidifier are provided with detection channels, and the detection channels are connected between the inside and outside of the regeneration area of the rotary dehumidifier. The sealing performance detection method is used for detecting the sealing performance of the regeneration area of the rotary dehumidifier. The present application has the technical effects that the leakage rate of the sealing strip of the regeneration area of the rotary dehumidifier can be quantitatively calculated, and the leakage caused by aging or other reasons of the sealing strip can be detected in real time during the operation of the rotary dehumidifier.

Description

Technical Field

[0001] This invention relates to the technical field of dehumidification and drying equipment and methods, specifically to a sealing performance testing device, a rotary dehumidifier, and a sealing performance testing method. Background Technology

[0002] Rotary dehumidifiers use a honeycomb-structured dehumidifying rotor. A drive motor rotates the dehumidifying rotor, continuously repeating the moisture absorption and regeneration process to provide dry air. They are widely used in industries such as pharmaceuticals, wastewater treatment facilities, food processing, electronics, medical products, and defense.

[0003] Specifically, the rotor in a rotary dehumidifier is generally divided into two parts: a treatment zone and a regeneration zone. The regeneration zone is equipped with a sealing strip to prevent air from mixing back. When humid air passes through the rotating rotor, water vapor is adsorbed by the treatment zone, while dry air is released through the other side of the treatment zone. When the continuously rotating, moisture-laden rotor enters the regeneration zone, the high-temperature air blown in the opposite direction causes the water vapor on the rotor to desorb, thus restoring the rotor's moisture absorption function and completing the regeneration process. This cycle repeats continuously to achieve a continuous drying function. The sealing strip is located between the regeneration zone and the treatment zone, ensuring that the hot, humid air in the regeneration zone is isolated from the cold, dry air in the treatment zone, preventing hot, humid air from entering the treatment zone and affecting the dehumidification effect of the rotor. The sealing performance of the regeneration zone is a key factor in ensuring the dehumidification effect.

[0004] In the existing technology, rotary sealing strips are all installed manually, and their sealing performance is simply observed by light or manual inspection. Therefore, they have defects: the existing testing methods are all based on human observation, which has poor accuracy and is not objective enough. Moreover, the method of visual observation can only qualitatively observe the quality of sealing, but cannot quantitatively analyze the sealing performance, thus hindering the process of automation.

[0005] Based on the above deficiencies, this application provides a sealing performance testing device, a rotary dehumidifier, and a sealing performance testing method to solve the existing technical problems. Summary of the Invention

[0006] The purpose of this invention is to provide a sealing performance testing device, a rotary dehumidifier, and a sealing performance testing method to solve the problems mentioned in the background art.

[0007] The existing visual inspection method has the drawbacks of inaccuracy and inability to perform quantitative analysis. In order to solve the above technical problems, this application proposes a scheme to measure the air intake and exhaust data in the regeneration zone of a rotary dehumidifier and analyze its sealing performance through the measured data.

[0008] Based on the above solution, this application specifically proposes a sealing performance testing device, which is used to acquire data on the inlet and outlet air temperature and humidity and the inlet and outlet air velocity of the regeneration zone of a rotary dehumidifier, so as to quantify the sealing performance based on the acquired data.

[0009] Preferably, the sealing performance testing device includes a first detector for detecting the inlet air temperature and humidity of the regeneration zone of the rotary dehumidifier; a second detector for detecting the outlet air temperature and humidity of the regeneration zone of the rotary dehumidifier; a third detector for detecting the inlet air velocity of the regeneration zone of the rotary dehumidifier; and a fourth detector for detecting the outlet air velocity of the regeneration zone of the rotary dehumidifier. The first and second detectors are temperature and humidity sensors, and the third and fourth detectors are wind speed sensors. The sealing performance can be quantitatively analyzed using the detected data.

[0010] Preferably, the sealing performance testing device further includes a display screen, and the first detector, second detector, third detector and fourth detector are electrically connected to the display screen to display test data. It also includes a power supply, which is electrically connected to the display screen and each sensor.

[0011] Preferably, the sealing performance testing device further includes a supporting housing and a receiving housing. The supporting housing has a trapezoidal structure and serves as a base to support the receiving housing. The receiving housing has an inverted trapezoidal structure, and the display screen and power supply are housed inside the receiving housing. The supporting housing has a snap-fit ​​groove at one end near the receiving housing, and the receiving housing has a snap-fit ​​protrusion at one end near the supporting housing. The snap-fit ​​protrusion and the snap-fit ​​groove cooperate to connect the supporting housing and the receiving housing, so that the supporting housing and the receiving housing are connected by a sliding rail snap-fit ​​connection, which facilitates disassembly and installation.

[0012] Preferably, the sealing performance testing device also includes a cable reel. The first detector, second detector, third detector, and fourth detector are all electrically connected to the display screen via cables. The cables are stored in the cable reel, which is an automatically retractable type. This eliminates the need for testing personnel to collect and organize the cables after the testing task is completed, saving testing personnel time, reducing their burden, and adding convenience, economy, and ease of operation.

[0013] Based on the above solution, this application also proposes a rotary dehumidifier, which differs from existing dehumidifiers and is used to complete the testing work simply and conveniently in conjunction with a sealing performance testing device.

[0014] Specifically, the regeneration zone of this rotary dehumidifier is equipped with detection channels at both the air inlet and outlet. These detection channels connect the inside and outside of the regeneration zone and are used in conjunction with the first, second, third, and fourth detectors of the sealing performance testing device. This allows the first, second, third, and fourth detectors to extend into the regeneration zone of the rotary dehumidifier through the detection channels, facilitating the detection of the air inlet and outlet data of the regeneration zone. The method of setting up these detection channels to facilitate testing has the technical advantages of occupying little space and not damaging the structure and function of the rotary module.

[0015] Preferably, this rotary dehumidifier also includes an inspection door, which is used to block the detection channel. That is, when the rotary dehumidifier is not performing the detection task, the inspection channel is closed through the inspection door to prevent air leakage.

[0016] Preferably, this rotary dehumidifier also includes a probe holder, which can be placed into the detection channel. The probe holder has a pre-reserved probe channel. That is, when the rotary dehumidifier performs a detection task, the access door is removed, the probe holder is placed in the detection channel, and the probes of each detector are inserted into the probe channel to perform the detection task.

[0017] Preferably, this rotary dehumidifier also includes the aforementioned sealing performance testing device.

[0018] Based on the above scheme, this application also proposes a sealing performance testing method, which can quantify the sealing performance.

[0019] Specifically, this sealing performance testing method includes the following steps:

[0020] S1. Obtain the inlet air temperature, outlet air temperature, inlet air humidity, outlet air humidity, inlet air velocity, and outlet air velocity of the regeneration zone of the rotary dehumidifier;

[0021] S2. Calculate the air density ρ at the air inlet. 进 and the air density ρ at the air outlet 出 ;

[0022] S3. Calculate the leakage rate L:

[0023]

[0024] Among them, V 进 V is the intake air velocity. 出 This refers to the airflow speed.

[0025] Preferably, step S2 includes:

[0026] S2a. Calculate the saturated water vapor partial pressure P based on the temperature and humidity detected in step 1. WS进 With P WS出 ;

[0027] S2b. Calculate the air humidity W 进 With W 出 ;

[0028] S2c. Calculate the air density ρ 进 With ρ 出 :

[0029] ρ 进 =P WS进 / 0.2871(t 进 +273.15)(1+1.6078W 进 )

[0030] Where t 进 Intake air temperature;

[0031] ρ 出 =P WS出 / 0.2871(t 出 +273.15)(1+1.6078W 出 )

[0032] Where t 进 This refers to the outlet air temperature.

[0033] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: The present invention proposes to measure the data of air intake and exhaust in the regeneration zone of a rotary dehumidifier, and analyze its sealing performance through the measured data. Based on this, a sealing performance testing device, a rotary dehumidifier, and a sealing performance testing method are disclosed. It can quantitatively calculate the leakage rate of the sealing strip in the regeneration zone of the rotary dehumidifier, and can also detect leakage caused by aging of the sealing strip or other reasons in real time during the operation of the rotary dehumidifier. Attached Figure Description

[0034] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0035] Figure 1 This is a perspective view of a rotary dehumidifier according to an embodiment of the present invention;

[0036] Figure 2 This is a front view of the supporting shell and the storage shell in an embodiment of the present invention;

[0037] Figure 3 This is a perspective view of the detection channel, inspection door, and probe holder in an embodiment of the present invention;

[0038] In the picture:

[0039] First detector 1;

[0040] Second detector 2;

[0041] Third detector 3;

[0042] Fourth detector 4;

[0043] Display screen 5;

[0044] Support housing 6, snap-fit ​​groove 6-1;

[0045] Storage housing 7, buckle protrusion 7-1;

[0046] Cable 8;

[0047] 9 reels;

[0048] Detection channel 10;

[0049] Inspection door 11, first cylindrical plug 11-1;

[0050] Probe holder 12, probe channel 12-1, second cylindrical plug 12-2, opening ring 12-3, fastening screw 12-4. Detailed Implementation

[0051] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0052] To address the shortcomings of existing visual inspection methods, such as inaccuracy and inability to provide quantitative analysis, this application provides a rotary dehumidifier that includes a sealing performance testing device. This device can measure the data of the air entering and exiting the regeneration zone of the rotary dehumidifier, so as to quantify the sealing performance based on the measured data.

[0053] Specifically, such as Figures 1-3 ;

[0054] The sealing performance testing device includes a first detector 1, which is used to detect the inlet air temperature and humidity of the regeneration zone of the rotary dehumidifier; a second detector 2, which is used to detect the outlet air temperature and humidity of the regeneration zone of the rotary dehumidifier; a third detector 3, which is used to detect the inlet air velocity of the regeneration zone of the rotary dehumidifier; and a fourth detector 4, which is used to detect the outlet air velocity of the regeneration zone of the rotary dehumidifier. The first detector 1 and the second detector 2 are specifically temperature and humidity sensors, and the third detector 3 and the fourth detector 4 are specifically wind speed sensors. When performing the testing task, the probes of the first detector 1 and the third detector 3 are placed at the air inlet of the regeneration zone of the rotary dehumidifier, and the probes of the second detector 2 and the fourth detector 4 are placed at the air outlet of the regeneration zone of the rotary dehumidifier. The sealing performance can be analyzed and quantified using the detected data.

[0055] Furthermore, the sealing performance testing device also includes a display screen 5, which is an integrated 4.3-inch touch screen with 4-20mA analog input. The first detector 1, the second detector 2, the third detector 3, and the fourth detector 4 are electrically connected to the display screen 5 to convert analog signals into digital signals and display them on the display screen 5.

[0056] Furthermore, the sealing performance testing device also includes a power supply, which is electrically connected to the first detector 1, the second detector 2, the third detector 3, the fourth detector 4, and the display screen 5 to provide electrical energy.

[0057] Furthermore, the sealing performance testing device also includes a support housing 6 and a storage housing 7. The display screen 5 is stored in the storage housing 7. The end of the support housing 6 near the storage housing 7 is provided with a snap-fit ​​groove 6-1, and the end of the storage housing 7 near the support housing 6 is provided with a snap-fit ​​protrusion 7-1. The snap-fit ​​protrusion 7-1 and the snap-fit ​​groove 6-1 cooperate to connect the support housing 6 and the storage housing 7.

[0058] Furthermore, the sealing performance testing device also includes a cable reel 9. The first detector 1, the second detector 2, the third detector 3, and the fourth detector 4 are all electrically connected to the display screen 5 via cables 8, which are stored in the cable reel 9.

[0059] Furthermore, both the air inlet and outlet of the regeneration zone of the rotary dehumidifier are equipped with detection channels 10. The detection channels 10 connect the inside and outside of the regeneration zone of the rotary dehumidifier and are used to cooperate with the sealing performance testing device to facilitate the testing of the sealing performance of the regeneration zone of the rotary dehumidifier. Specifically, the two detection channels 10 set at the air inlet of the regeneration zone of the rotary dehumidifier are respectively used to correspond to the first detector 1 and the third detector 3, and the other two detection channels 10 set at the air outlet of the regeneration zone of the rotary dehumidifier are respectively used to correspond to the second detector 2 and the fourth detector 4.

[0060] Furthermore, the rotary dehumidifier also includes an inspection door 11. When no inspection task is required, the inspection door 11 is used to block the inspection channel 10 to prevent air leakage. Specifically, the inspection channel 10 is provided with an internal thread, and the inspection door 11 includes a first cylindrical plug 11-1, on which an external thread is provided to engage with and tighten with the internal thread.

[0061] Furthermore, the rotary dehumidifier also includes a probe holder 12. When a testing task is required, the access door 11 is unscrewed, and the probe holder 12 is placed into the testing channel 10. The probe holder 12 has a pre-drilled probe channel 12-1. Then, the probes of the first detector 1, the second detector 2, the third detector 3, and the fourth detector 4 are inserted into the probe channel 12-1 to perform the testing task. Specifically, the probe holder 12 includes a second cylindrical plug 12-2, which also has an external thread for tightening with the internal thread, allowing the probe holder 12 to be tightened into the testing channel 10. At the same time, the probe is fixed... The retainer 12 also includes an open ring 12-3 and a fastening screw 12-4. The probe is inserted into the probe channel 12-1 and passes through the open ring 12-3. Then the fastening screw 12-4 is tightened to prevent the probe from shaking and falling off, thus ensuring the accuracy of the data. This structure occupies a small space and does not damage the structure and function of the rotary module. The maintenance door 11 and the probe retainer 12, which are tightened by a knob, can effectively prevent airflow loss, whether or not a testing task is being performed. The open ring 12-3 and the fastening screw 12-4 can ensure that the probe will not shake and fall off due to wind speed during the testing task, thus ensuring the accuracy of the measurement data.

[0062] Example: This example provides a preferred embodiment of a sealing performance testing method, which utilizes the aforementioned rotary dehumidifier to perform the testing task and tests the sealing performance of the regeneration zone of the rotary dehumidifier; it includes the following steps:

[0063] S1. Insert the probes of the first detector 1, the second detector 2, the third detector 3, and the fourth detector 4 into their corresponding detection channels 10, and read the parameters of the temperature and humidity sensor and the anemometer to obtain the inlet air temperature t of the regeneration zone of the rotary dehumidifier. 进 Air outlet temperature t 出 φ of incoming air humidity 进 φ of air outlet humidity 出 Inlet air velocity V 进 And the air outlet speed V 出 They are respectively:

[0064] t 进 =80℃;

[0065] t 出 =45℃;

[0066] φ 进 =8.5%;

[0067] φ 出 =55%;

[0068] V 进 =3.5m / s;

[0069] V 出 =2.98m / s.

[0070] S2. Calculate the air density ρ at the air inlet. 进 and the air density ρ at the air outlet 出 It includes the following steps:

[0071] S2a. Calculate the saturated water vapor partial pressure P based on the temperature and humidity detected in step 1. WS进 With P WS出 The formula for calculating the partial pressure of saturated water vapor is as follows:

[0072]

[0073] in,

[0074] T represents the thermodynamic temperature of air, with units of K. T = t + 273.15, yielding:

[0075] T 进 =80 + 273.15 = 353.15K;

[0076] T 出 =45 + 273.15 = 318.15K;

[0077] C1 to C6 are constants, taking the following values:

[0078] C1 = -5.8002206E+03;

[0079] C2 = 1.3914993E+00;

[0080] C3 = -4.8640239E-02;

[0081] C4 = 4.1764768E-05;

[0082] C5 = -1.4452093E-08;

[0083] C6 = 6.5459673E+00;

[0084] The calculated partial pressure of saturated water vapor is:

[0085] P WS进 =47413.1 Pa;

[0086] P WS出 =9593.5Pa.

[0087] S2b. Calculate the air humidity W 进 With W 出 The formula for calculating moisture content is as follows:

[0088]

[0089] in,

[0090] W represents the humidity content of air, measured in kgw / kgda;

[0091] P W The partial pressure of water vapor in air, expressed in Pa.

[0092] P represents atmospheric pressure, in Pa. Standard atmospheric pressure is used here, i.e., p = 101325 Pa.

[0093] φ represents relative humidity, which is measured by a temperature and humidity sensor in step S1.

[0094] P WS The saturated water vapor partial pressure has been calculated in step S2a, and therefore the water vapor partial pressure P of the air can be obtained. W =φP WS ;

[0095] The obtained air humidity content is:

[0096] W 进 =0.62198×(8.5%×1402.6) / (101325-8.5%×1402.6)

[0097] =25.76×10 -3 kgw / kgda;

[0098] W 出 =0.62198×(55%×7786.5) / (101325-55%×7786.5)

[0099] =34.17×10 -3 kgw / kgda.

[0100] S2c. Calculate the air density ρ 进 With ρ 出 The formula for calculating density is as follows:

[0101] ρ=P / 0.2871(t+273.15)(1+1.6078W)

[0102] The obtained air density is:

[0103] ρ 进 =0.983kg / m 3 ;

[0104] ρ 出 =1.086kg / m 3 .

[0105] S2d. Calculate the air volumetric flow rate. The formula for calculating the volumetric flow rate is as follows:

[0106] Q V =V·S 截

[0107] in,

[0108] V is the wind speed, which is measured by an anemometer in step S1;

[0109] S 截 The cross-sectional area of ​​the air collection box in the regeneration zone of the rotary dehumidifier (the cross-sectional area of ​​the air collection box at the air inlet and air outlet is the same).

[0110] S2e. Calculate air quality. The formula for calculating air quality is as follows:

[0111] m=ρ·Q V

[0112] in,

[0113] ρ is calculated in step S2c;

[0114] Q V It is calculated in step S2d.

[0115] S3. Calculate the leakage rate L. The formula for calculating the leakage rate is as follows:

[0116]

[0117] That is, we get:

[0118]

[0119] in,

[0120] ρ is calculated in step S2c, and V is measured in step S1, resulting in:

[0121]

[0122] The final leakage rate of the sealing strip in the regeneration zone of the rotary dehumidifier was 6%.

[0123] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0124] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for testing sealing performance, characterized in that, The detection method is used to detect the sealing performance of the regeneration zone of a rotary dehumidifier, and includes the following steps: S1. Obtain the inlet air temperature, outlet air temperature, inlet air humidity, outlet air humidity, inlet air velocity, and outlet air velocity of the regeneration zone of the rotary dehumidifier; S2. Calculate the air density ρ at the air inlet. 进 and the air density ρ at the air outlet 出 ; S3. Calculate the leakage rate L: ； Among them, V 进 V is the intake air velocity. 出 This refers to the airflow speed at the outlet. Step S2 includes: S2a. Calculate the saturated water vapor partial pressure P based on the temperature and humidity detected in step 1. WS进 With P WS出 ; S2b. Calculate the air humidity W 进 With W 出 ; S2c. Calculate the air density ρ 进 With ρ 出 : r 进 =P WS进 / 0.2871(t 进 +273.15)(1+1.6078W 进 ); Where t 进 Intake air temperature; r 出 =P WS出 / 0.2871(t 出 +273.15)(1+1.6078W 出 ); Where t 进 This refers to the outlet air temperature.

2. A sealing performance testing device, wherein the sealing performance testing device uses the sealing performance testing method according to claim 1, characterized in that, The detection device is used to detect the regeneration zone of the rotary dehumidifier, and includes: The first detector is used to detect the temperature and humidity of the air entering the regeneration zone of the rotary dehumidifier. And a second detector, which is used to detect the outlet air temperature and humidity of the regeneration zone of the rotary dehumidifier; And a third detector, which is used to detect the air intake velocity in the regeneration zone of the rotary dehumidifier; And a fourth detector, which is used to detect the outlet air velocity in the regeneration zone of the rotary dehumidifier.

3. The sealing performance testing device according to claim 2, characterized in that, It also includes a display screen, and the first detector, the second detector, the third detector, and the fourth detector are electrically connected to the display screen to display detection data.

4. The sealing performance testing device according to claim 3, characterized in that, It also includes a support housing and a storage housing. The display screen is stored in the storage housing. The support housing has a snap-fit ​​groove at one end near the storage housing, and the storage housing has a snap-fit ​​protrusion at one end near the support housing. The snap-fit ​​protrusion and the snap-fit ​​groove cooperate to connect the support housing and the storage housing.

5. The sealing performance testing device according to claim 3 or 4, characterized in that, The first detector, the second detector, the third detector, and the fourth detector are all electrically connected to the display screen via cables, which are stored in a cable reel.

6. A rotary dehumidifier, characterized in that: Both the air inlet and outlet of the regeneration zone of the rotary dehumidifier are provided with detection channels. The detection channels connect the inside and outside of the regeneration zone of the rotary dehumidifier and are used to cooperate with the sealing performance testing device according to any one of claims 2 to 5, so as to facilitate the testing of the sealing performance of the regeneration zone of the rotary dehumidifier.

7. The rotary dehumidifier according to claim 6, characterized in that, The rotary dehumidifier also includes: An inspection door, used to block the inspection channel; And a probe holder, which can be placed into the detection channel, and the probe holder has a reserved probe channel.

8. The rotary dehumidifier according to claim 6, characterized in that, It includes the sealing performance testing device as described in any one of claims 2 to 5.

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