A method of monitoring the temperature inside a retort and building an internal temperature field

Abstract

The application discloses a kind of methods for monitoring retort barrel internal temperature and constructing internal temperature field, belong to the technical field of liquor solid distillation, comprising the following steps: constructing the sealed temperature measuring device of retort barrel;The sealed temperature measuring device of retort barrel is installed on retort barrel, and the retort barrel of internal temperature to be monitored is obtained;The data output end of each temperature sensor in the retort barrel of internal temperature to be detected is connected with data acquisition module, and is uploaded to computer;The internal temperature data of retort barrel in the distillation process of retort barrel is read using modbus communication protocol;Based on the internal temperature data of retort barrel, obtain temperature measurement grid data;Based on temperature measurement grid data, construct retort barrel temperature field;The application solves the problem that the existing retort barrel internal temperature detection is not comprehensive and not intuitive.

Description

Technical Field

[0001] This invention belongs to the field of solid-state distillation technology of baijiu (Chinese liquor), and particularly relates to a method for monitoring the internal temperature of the still and constructing an internal temperature field. Background Technology

[0002] With the rapid development of automated equipment in the liquor industry and the continuous improvement of brewing processes, especially the improvement of distillation equipment, the heat and mass transfer effects inside the still have been improved, the distillation efficiency has been increased, and the output and quality of distilled liquor have been improved. However, there is still little research on the changes in the mash during the liquor distillation process.

[0003] Currently, wineries are gradually shifting towards full automation, and are paying more and more attention to collecting various parameters during the production process. In particular, there has never been a good method for collecting internal temperature data during the still distillation process.

[0004] The traditional method involves manually inserting the thermometer into the mash at different depths at intervals during the steaming process to record and analyze the temperature changes inside the steamer at that moment. However, this manual method can only collect data from one point at a time, which is too labor-intensive, and the local temperature data cannot accurately reflect the temperature distribution of the entire surface of the mash. While infrared thermometry can detect the temperature of the entire surface of the mash, its limitation is that it can only detect the surface of the mash and cannot explore the internal information. Furthermore, the infrared thermometer stops working after the steaming process is completed. Summary of the Invention

[0005] In view of the above-mentioned shortcomings in the prior art, the present invention provides a method for monitoring the internal temperature of a steaming pot and constructing an internal temperature field. By realizing simultaneous monitoring at multiple points and freely setting the data reading interval, a large amount of steaming pot temperature data can be obtained, solving the problems of incomplete and unintuitive internal temperature detection in existing steaming pots.

[0006] To achieve the above-mentioned objectives, the technical solution adopted by this invention is as follows:

[0007] This invention provides a method for monitoring the internal temperature of a steaming pot and constructing an internal temperature field, comprising the following steps:

[0008] S1. Construct a sealed temperature measuring device for the steamer;

[0009] S2. Install the sealing temperature measuring device on the steamer to obtain the steamer with the internal temperature to be monitored.

[0010] S3. Connect the data output terminals of each temperature sensor in the steamer whose internal temperature is to be detected to the data acquisition module.

[0011] S4. Transmit the internal temperature data of the steamer in the multi-channel data acquisition unit to an external computer via the USB interface.

[0012] S5. Use the Modbus communication protocol to read the internal temperature data of the still during the still distillation process;

[0013] S6. Based on the internal temperature data of the steamer, obtain the temperature measurement grid data;

[0014] S7. Construct the temperature field of the steamer based on the temperature measurement grid data.

[0015] Further, step S1 includes the following steps:

[0016] S11. Several wire holes are threaded through the annular U-shaped rubber ring to obtain an air-proof rubber ring;

[0017] S12. Several temperature sensors, equal in number to the number of wire holes, are respectively threaded through each wire hole into the leak-proof rubber ring.

[0018] S13. Set up the same number of temperature measuring brackets according to the preset number of temperature monitoring layers inside the steamer;

[0019] S14. Based on the preset number of temperature monitoring layers inside the steamer, divide the temperature sensors into temperature sensor groups corresponding to the number of layers.

[0020] S15. Fix and connect each temperature sensor in each temperature sensor group to the corresponding temperature measuring bracket to complete the construction of the sealed temperature measuring device for the steamer.

[0021] Furthermore, the metal temperature measuring end of each temperature sensor is located on the outer side of the small diameter ring wall of the leak-proof rubber ring; the data transmission line of each temperature sensor is passed between the inner side of the small diameter ring wall and the inner side of the large diameter ring wall of the leak-proof rubber ring; the data output end of each temperature sensor is located on the outer side of the large diameter ring wall of the leak-proof rubber ring and is connected to the data acquisition module.

[0022] Furthermore, each of the temperature measuring brackets includes a first annular bracket, a second annular bracket, a first strip bracket, and a second strip bracket; the first annular bracket and the second annular bracket share the same center; the lengths of the first strip bracket and the second strip bracket are equal to the diameter of the first annular bracket;

[0023] The midpoint of the first strip-shaped support coincides with the center of the first and second annular supports; the midpoint of the second strip-shaped support coincides with the center of the first and second annular supports and is fixedly connected to the midpoint of the first strip-shaped support; the first and second strip-shaped supports are perpendicular to each other; both the first and second strip-shaped supports are connected to the first annular support; both the first and second strip-shaped supports are connected to the second annular support.

[0024] Further, step S2 includes the following steps:

[0025] S21. According to the preset number of temperature monitoring layers inside the still, the mash and temperature measuring brackets equipped with temperature sensors are laid in the still at intervals until the top layer of mash is laid.

[0026] S22. Securely connect the leak-proof rubber ring with the temperature sensor data transmission line to the opening of the steamer.

[0027] S23. Cover the steamer with the top of the leak-proof rubber ring to obtain the steamer whose internal temperature is to be monitored.

[0028] Further, step S6 includes the following steps:

[0029] S61. Divide the internal temperature data of the steamer into several temperature measurement layers and multiple time-lapse temperature data groups.

[0030] S62. Preprocess the temperature data sets from multiple time points of each temperature measurement layer to obtain the temperature detection surface z. i ;

[0031] S63. Construct several temperature measurement layer grids;

[0032] S64, Based on temperature detection surface z i The interpolation algorithm is used to fill each temperature measurement layer to obtain temperature measurement grid data.

[0033] Further, step S62 includes the following steps:

[0034] S621. Combine the temperature data z from the multi-time temperature data sets of each temperature measurement layer, which are monitored by the same temperature sensor at each time. t The corresponding sensor points (x, y) are calibrated using coordinate axes, where x and y represent the horizontal and vertical positions of the temperature sensor on the temperature measuring bracket plane, respectively.

[0035] S622. Temperature data z at various times is obtained by monitoring the same temperature sensor. t The temperature monitoring surface z is obtained by tabulating the corresponding sensor points (x, y) and their corresponding sensor locations. i The temperature monitoring surface and the non-equidistant vector (x, y, z) t The data is consistent with that in the original text.

[0036] Furthermore, the calculation expression for table processing in step S622 is as follows:

[0037] z i =griddata(x,y,z) t ,x i ,yi )

[0038] Where griddata represents tabular processing, x i and y i These represent the horizontal and vertical positions of the i-th cell in a uniform grid, respectively.

[0039] Further, step S7 includes the following steps:

[0040] S71. Based on the temperature measurement grid data, obtain complete temperature measurement interpolation data;

[0041] S73. Using OriginPro plotting software, perform 3D color mapping based on complete temperature interpolation data to obtain a 3D color mapping curve.

[0042] S74. Flatten the 3D color mapping curve to complete the construction of the temperature field of the steamer.

[0043] The beneficial effects of this invention are as follows: This invention provides a method for detecting the internal temperature of a still and constructing a temperature field during the distillation process. The temperature sensor and the anti-leakage rubber ring used are made of waterproof, corrosion-resistant, high-temperature resistant, and non-toxic and harmless materials. When the still lid is closed, the pressure of the lid can effectively seal the wire hole on the rubber ring, so that the alcohol vapor does not leak while the temperature is detected, and the temperature change inside the still can be monitored throughout the process. Attached Figure Description

[0044] Figure 1 This is a flowchart illustrating the steps of a method for monitoring the internal temperature of a steamer and constructing an internal temperature field according to an embodiment of the present invention.

[0045] Figure 2 This is a schematic diagram of the anti-leakage rubber ring in an embodiment of the present invention.

[0046] Figure 3 This is a schematic diagram of the temperature measuring bracket in an embodiment of the present invention.

[0047] Figure 4 This is a schematic diagram of a steamer with its internal temperature to be monitored without a lid, as described in an embodiment of the present invention.

[0048] Figure 5 This is a 3D color mapping curve diagram in an embodiment of the present invention.

[0049] Figure 6 This is a schematic diagram of the temperature field of the steamer in an embodiment of the present invention.

[0050] The components include: 1. Steamer; 2. Leak-proof rubber ring; 3. Wiring hole; 4. Temperature measuring bracket; 5. Data transmission line; and 6. Data acquisition module. Detailed Implementation

[0051] The specific embodiments of the present invention are described below to enable those skilled in the art to understand the present invention. However, it should be understood that the present invention is not limited to the scope of the specific embodiments. For those skilled in the art, various changes are obvious as long as they are within the spirit and scope of the present invention as defined and determined by the appended claims. All inventions utilizing the concept of the present invention are protected.

[0052] like Figure 1 As shown, in one embodiment of the present invention, the present invention provides a method for monitoring the internal temperature of a steaming pot and constructing an internal temperature field, comprising the following steps:

[0053] S1. Construct a sealed temperature measuring device for the steamer 1;

[0054] Step S1 includes the following steps:

[0055] S11. Several wire holes 3 are threaded through the annular U-shaped rubber ring to obtain the air-proof rubber ring 2;

[0056] S12. Several temperature sensors, equal in number to the number of wire holes 3, are respectively threaded through each wire hole 3 into the air-proof rubber ring 2.

[0057] The leak-proof rubber ring 2 is made of food-grade rubber, U-shaped, and has a thickness ranging from 7mm to 10mm. The U-shaped shape of the leak-proof rubber ring allows it to fit completely and effectively against the edge of the steamer. The thickness of the rubber ring is controlled between 7mm and 10mm. If it is too thin, it will be difficult to drill holes, and if it is too thick, it will cause the steamer lid to deform. Holes with a diameter of 3mm are drilled in the rubber ring using a drilling machine. The number of holes is determined by the number of sensors to be installed. The sensors are passed through the rubber holes, and only sufficient wire length needs to be reserved inside.

[0058] The temperature sensor used is a PT100 temperature sensor;

[0059] The housing of the temperature sensor is made of a three-core PTFE silver-plated shielded wire.

[0060] S13. Set up the same number of temperature measuring brackets 4 according to the preset number of temperature monitoring layers inside the steamer 1.

[0061] S14. Based on the preset number of temperature monitoring layers inside the steamer 1, divide the temperature sensors into temperature sensor groups corresponding to the number of layers.

[0062] S15. Fix each temperature sensor in each temperature sensor group to the corresponding temperature measuring bracket 4 to complete the construction of the sealed temperature measuring device for the steamer 1.

[0063] like Figure 2As shown, the metal temperature measuring end of each temperature sensor is located on the outside of the small diameter ring wall of the leak-proof rubber ring 2; the data transmission line 5 of each temperature sensor is passed between the inside of the small diameter ring wall and the inside of the large diameter ring wall of the leak-proof rubber ring 2; the data output end of each temperature sensor is located on the outside of the large diameter ring wall of the leak-proof rubber ring 2 and is connected to the data acquisition module 6.

[0064] like Figure 3 As shown, each of the temperature measuring brackets 4 includes a first annular bracket, a second annular bracket, a first strip bracket, and a second strip bracket; the first annular bracket and the second annular bracket share the same center; the lengths of the first strip bracket and the second strip bracket are equal to the diameter of the first annular bracket;

[0065] The first annular bracket, the second annular bracket, the first strip bracket, and the second strip bracket are all made of stainless steel.

[0066] The midpoint of the first strip-shaped support coincides with the center of the first and second annular supports; the midpoint of the second strip-shaped support coincides with the center of the first and second annular supports and is fixedly connected to the midpoint of the first strip-shaped support; the first and second strip-shaped supports are perpendicular to each other; both the first and second strip-shaped supports are connected to the first annular support; both the first and second strip-shaped supports are connected to the second annular support.

[0067] S2. Install the sealing temperature measuring device of the steamer 1 on the steamer 1 to obtain the steamer whose internal temperature is to be monitored.

[0068] Step S2 includes the following steps:

[0069] S21. According to the preset number of temperature monitoring layers inside the still, the mash and the temperature measuring bracket 4 equipped with temperature sensors are laid in the still 1 at intervals until the top layer of mash is laid.

[0070] In this embodiment, during the process of steaming the liquor, a layer of leak-proof rubber ring with a temperature sensor is laid every 20cm of liquor mash, and four layers of temperature sensors are laid.

[0071] S22. Securely connect the leak-proof rubber ring 2, which is threaded with the temperature sensor data transmission line 5, to the opening of the steamer. Figure 4 As shown;

[0072] S23. Cover the steamer with the top of the leak-proof rubber ring 2 to obtain the steamer 1 whose internal temperature is to be monitored;

[0073] S3. Connect the data output terminals of each temperature sensor in the steamer whose internal temperature is to be detected to the data acquisition module 6.

[0074] The data acquisition module 6 uses a temperature acquisition device of model DM6212;

[0075] S4. Transmit the internal temperature data of the steamer in the multi-channel data acquisition unit to an external computer via the USB interface.

[0076] S5. Use the Modbus communication protocol to read the internal temperature data of the still during the still distillation process;

[0077] S6. Based on the internal temperature data of the steamer, obtain the temperature measurement grid data;

[0078] Step S6 includes the following steps:

[0079] S61. Divide the internal temperature data of the steamer into several temperature measurement layers and multiple time-lapse temperature data groups.

[0080] S62. Preprocess the temperature data sets from multiple time points of each temperature measurement layer to obtain the temperature detection surface z. i ;

[0081] Step S62 includes the following steps:

[0082] S621. Combine the temperature data z from the multi-time temperature data sets of each temperature measurement layer, which are monitored by the same temperature sensor at each time. t The corresponding sensor points (x, y) are calibrated using coordinate axes, where x and y represent the horizontal and vertical positions of the temperature sensor on the temperature measuring bracket 4 plane, respectively.

[0083] S622. Temperature data z at various times is obtained by monitoring the same temperature sensor. t The temperature monitoring surface z is obtained by tabulating the corresponding sensor points (x, y) and their corresponding sensor locations. i The temperature monitoring surface and the non-equidistant vector (x, y, z) t The data in ) is consistent;

[0084] The calculation expression for table processing in step S622 is as follows:

[0085] z i =griddata(x,y,z) t ,x i ,y i )

[0086] Where griddata represents tabular processing, x i and y i These represent the horizontal and vertical positions of the i-th cell in a uniform grid, respectively.

[0087] S63. Construct several temperature measurement layer grids;

[0088] S64, Based on temperature detection surface z i The interpolation algorithm is used to fill each temperature measurement layer to obtain temperature measurement grid data;

[0089] S7. Construct the temperature field of the steamer based on the temperature measurement grid data;

[0090] Step S7 includes the following steps:

[0091] S71. Based on the temperature measurement grid data, obtain complete temperature measurement interpolation data;

[0092] S73. Using OriginPro plotting software, perform 3D color mapping based on complete temperature interpolation data to obtain a 3D color mapping curve.

[0093] like Figure 5 As shown, in this embodiment, a certain layer of air-proof rubber ring has a thickness of 7mm, 84 openings with a diameter of 3mm, and after being transmitted to an external computer through a temperature acquisition module, the 84 temperature data related curves are read through the Modbus communication protocol.

[0094] S74. Flatten the 3D color mapping curve to complete the construction of the temperature field of the steamer.

[0095] like Figure 6 As shown, in this embodiment, four layers of temperature fields are set up by passing through four layers of leak-proof rubber rings with temperature sensors. Six time points are taken for each layer to expand the data and make a corresponding temperature field map inside the steamer.

Claims

1. A method of monitoring the temperature inside a retort and building an internal temperature field, characterized by, It comprises the following steps: S1, construct the sealing temperature measuring device of retort barrel (1); The step S1 comprises the following steps: S11, set a plurality of threading holes (3) in the annular U-shaped rubber ring to obtain an air leakage prevention rubber ring (2); S12, a plurality of temperature sensors equal to the number of threading holes (3) are respectively threaded into the air leakage prevention rubber ring (2) based on each threading hole (3); S13, according to the preset internal temperature monitoring layer number of retort barrel (1), set the same number of temperature measuring supports (4); S14, according to the preset internal temperature monitoring layer number of retort barrel (1), divide the temperature sensors into temperature sensor groups corresponding to the layer number; S15, each temperature sensor in each temperature sensor group is respectively fixedly connected with the corresponding temperature measuring support (4), and the construction of the sealing temperature measuring device of retort barrel (1) is completed; The metal temperature measuring end of each temperature sensor is arranged on the outer side of the small diameter ring wall of the air leakage prevention rubber ring (2); the data transmission line (5) of each temperature sensor is threaded between the inner side of the small diameter ring wall and the inner side of the large diameter ring wall of the air leakage prevention rubber ring (2); the data output end of each temperature sensor is arranged on the outer side of the large diameter ring wall of the air leakage prevention rubber ring (2), and is connected with the data acquisition module (6); Each temperature measuring support (4) comprises a first annular support, a second annular support, a first strip-shaped support and a second strip-shaped support; the first annular support and the second annular support share the same center; the length of the first strip-shaped support and the second strip-shaped support is equal to the diameter of the first annular support; The midpoint of the first strip-shaped support coincides with the center of the first annular support and the second annular support; the midpoint of the second strip-shaped support coincides with the center of the first annular support and the second annular support, and is fixedly connected with the midpoint of the first strip-shaped support; the first strip-shaped support and the second strip-shaped support are perpendicular to each other; the first strip-shaped support and the second strip-shaped support are connected with the first annular support; the first strip-shaped support and the second strip-shaped support are connected with the second annular support; S2, the sealing temperature measuring device of retort barrel (1) is installed on the retort barrel (1) to obtain a retort barrel with internal temperature to be monitored; The step S2 comprises the following steps: S21, according to the preset internal temperature monitoring layer number of retort barrel, the retort barrel (1) is sequentially and interval laid with wine dregs and temperature measuring supports (4) provided with temperature sensors until the top layer of wine dregs is laid; S22, the air leakage prevention rubber ring (2) provided with temperature sensor data transmission line (5) is fixedly connected with the retort barrel opening; S23, the retort barrel cover is covered on the top of the air leakage prevention rubber ring (2) to obtain the retort barrel (1) with internal temperature to be monitored; S3, the data output end of each temperature sensor in the retort barrel with internal temperature to be monitored is connected with the data acquisition module (6); S4, the retort barrel internal temperature data in the multi-channel data acquisition device is transmitted to the external computer through the USB interface; S5, the retort barrel internal temperature data in the retort distillation process is read by using modbus communication protocol; S6, based on the retort barrel internal temperature data, the temperature grid data is obtained; S7, based on the temperature grid data, the retort barrel temperature field is constructed.

2. The method of claim 1, wherein, The step S6 comprises the following steps: S61, divide the retort barrel internal temperature data into several temperature measurement layer multi-time temperature data groups; S62, preprocessing each temperature layer multi-time temperature data set to obtain temperature detection surface ; S63, construct several temperature measurement layer grids; S64, based on temperature detection curved surface And interpolation algorithm for each temperature layer filling, get temperature grid data.

3. The method of claim 2, wherein, The step S62 includes the following steps: S621, the temperature data of each time point monitored by the same temperature sensor in the temperature data group of each temperature measurement layer at multiple time points z t corresponding sensor point position (x, y) is calibrated on the coordinate axis, wherein, x , y x and y respectively represent the horizontal position and the longitudinal position of the temperature sensor on the temperature measurement support (4) plane;​ S622, monitoring the temperature data of each time point for the same temperature sensor z t and the corresponding sensor point position x , y ) are table processed to obtain a temperature monitoring surface , wherein the temperature monitoring surface is consistent with the data in the non-equidistant vector x , y , z t ) 4. The method of claim 3, wherein, The calculation expression of the table processing in the step S622 is as follows: in, This indicates tabular processing. and They represent the first and second digits of the uniform grid, respectively. i The horizontal and vertical positions of each cell.

5. The method of claim 4, wherein, The step S7 includes the following steps: S71, obtain complete temperature measurement interpolation data according to the temperature measurement grid data; S73, use originpro drawing software to perform 3D color mapping according to the complete temperature measurement interpolation data, and obtain a 3D color mapping curve graph; S74, flatten the 3D color mapping curve graph, and complete the construction of the retort barrel temperature field.

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