CN115452201A - Thermostat temperature calibration test method - Google Patents
Thermostat temperature calibration test method Download PDFInfo
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- CN115452201A CN115452201A CN202211132449.4A CN202211132449A CN115452201A CN 115452201 A CN115452201 A CN 115452201A CN 202211132449 A CN202211132449 A CN 202211132449A CN 115452201 A CN115452201 A CN 115452201A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K15/00—Testing or calibrating of thermometers
- G01K15/005—Calibration
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K15/00—Testing or calibrating of thermometers
- G01K15/002—Calibrated temperature sources, temperature standards therefor
Abstract
The invention relates to a thermostat temperature calibration test method, which adopts a dry-type thermostat temperature calibration device, wherein the device comprises a test base, at least one group of flexible thermocouple films, a compensation lead group, a temperature data recording and transmitting device and a cloud server; wherein, flexible thermocouple film adopts connection piece and socket to be connected with the test base, adopts electrical connection between compensation wire group and temperature data record emitter, adopts wireless internet networking transmission between temperature data record emitter and high in the clouds server. The temperature measuring element disclosed by the invention is more attached to the surface of the heating metal block of the dry-type thermostat, the Internet + technology is adopted, the original mode that an engineer needs to detect on site is changed, the measurement parameters can be set in real time through the mobile terminal, the measurement process can be observed in real time, and the temperature measuring element has wide application prospect.
Description
Technical Field
The invention belongs to the technical field of temperature calibration of dry thermostats, and relates to a thermostat temperature calibration test method.
Background
With the increasingly prominent demand for portability and miniaturization of devices, the demand for temperature detection and calibration in a flexible small space is increasing. In the medical field, the dry thermostat replaces the traditional water bath heating mode and is used in a plurality of fields such as enzyme preparation reaction, serum inactivation test, rb blood sample research, cholesterol detection and the like; the dry thermostat carries out quantitative detection on the chemical oxygen demand in the field of environmental monitoring, and has wide application value. Temperature sensing of the dry thermostat requires temperature calibration of a circular metal thermostat block within a small clearance range. At present, for flexible surface or space temperature measurement, a thermocouple wire or a surface-pasted thermocouple patch is generally adopted for testing, and certain errors exist in results. For a measured object such as a dry thermostat which needs to be tightly attached, the thermocouple wire is protected by an insulating layer, the diameter of the thermocouple wire is more than 1mm, the thermocouple wire cannot be completely attached to the measured dry thermostat, and measurement errors are easily caused. The existing surface-adhered thermocouple solidifies the original thermocouple wire into a thermocouple patch, and the thermocouple patch in the temperature measurement area has a certain thickness and cannot be completely adhered to the surface of a measured object, so that the error of a test result can be caused, and the response speed is not ideal. In addition, due to the introduction of the adhesive, the thermocouple cannot be used repeatedly, easily pollutes the measured object, and cannot be used for the measured object made of a flexible material, so that the dry-type thermostat temperature calibration device is in need of development.
Disclosure of Invention
In order to solve the technical defects, the invention provides the following technical scheme: a dry-type thermostat temperature calibration device and a test method thereof comprise a flexible thermocouple film structure and a preparation method thereof.
A temperature calibration device for a dry-type thermostat comprises a test base, at least one group of flexible thermocouple films, a compensation lead group, a temperature data recording and transmitting device and a cloud server;
wherein, flexible thermocouple film adopts connection piece and socket to be connected with the test base, adopts electrical connection between compensation wire group and temperature data record emitter, adopts wireless internet networking transmission between temperature data record emitter and high in the clouds server.
The test base comprises a base, a sliding connecting rod, at least one group of flexible thermocouple film connectors, a transverse sliding connecting rod, a scaling plate, a pressing plate support, a pressing plate, a compensation lead group and a data transmission connecting interface; the test base is made of an insulating non-metallic material.
The sliding connecting rod, the fixed scale, the compensation lead group and the data transmission connecting interface are fixed on the base;
the base is made of a silicon plate;
the sliding connecting rods, namely the anode sliding connecting rod and the cathode sliding connecting rod, are all made of universal thermocouple materials; one end of the anode sliding connecting rod and one end of the cathode sliding connecting rod are connected with the transverse sliding connecting rod through tracks, and the other ends of the anode sliding connecting rod and the cathode sliding connecting rod are electrically connected with the compensation lead group and the data transmission connecting interface. The sliding connecting rod is connected with the transverse sliding connecting rod and can slide on the sliding connecting rod, and the positions of the sliding connecting rod and the transverse sliding connecting rod can be automatically or manually adjusted according to the aperture position and the number of the actual dry-type thermostats to be measured; the anode sliding connecting rod is connected with the compensation lead group and the data transmission connecting interface through a thermocouple anode connecting line group; the cathode sliding connecting rod is connected with the compensation lead group and the data transmission connecting interface through the thermocouple cathode connecting line group.
The flexible thermocouple thin film connector is made of an insulating non-metal material and is made of a silicon plate, the flexible thermocouple thin film connector is connected with the transverse sliding connecting rod through a rail and can slide on the transverse sliding connecting rod, the flexible thermocouple thin film connector is in threaded connection with the pressing sheet supporting column and is connected with the flexible thermocouple thin film in a socket and connecting piece mode. According to the size of the dry thermostat to be tested and the testing requirement of the position of the heating hole, the number and the position of the film connected with the flexible thermocouple are determined, and the position data measured by the scale plate is transmitted and recorded in the temperature data recording and transmitting device through the compensating lead group and the data transmission connection interface.
According to being surveyed dry-type thermostat size and heating hole position test needs confirm to connect flexible thermocouple film quantity and position, specifically include:
1) When the number of the dry-type thermostat test holes is less than or equal to 4 x 4, a flexible thermocouple film is preferably arranged at the position of the central test hole;
2) When the number of the single-side test holes of the dry-type thermostat is more than 4, the flexible thermocouple films are additionally arranged in the test holes at the two ends of the side;
3) When the number of the test holes on the two sides of the dry-type thermostat is more than 4, a flexible thermocouple film is additionally arranged on the test holes on the four sides.
Each flexible thermocouple film connector corresponds to a group of anode connecting wires and cathode connecting wires, at least one group of anode connecting wires and at least one group of cathode connecting wires are contained in each transverse sliding connecting rod, and the flexible thermocouple film connectors are connected with the compensation lead groups and the data transmission connecting interfaces through the sliding connecting rods and the transverse sliding connecting rods. One end of the anode connecting wire is connected with the flexible thermocouple film anode connecting sheet by adopting a socket and a connecting sheet, and the other end of the anode connecting wire is connected with the anode sliding connecting rod by adopting a track. One end of the cathode connecting wire is connected with the cathode connecting sheet of the flexible thermocouple film by adopting a socket and a connecting sheet, and the other end of the cathode connecting wire is connected with the cathode sliding connecting rod by adopting a track. The anode sliding connecting rod, the thermocouple anode connecting wire group and the anode connecting wire are made of the same thermocouple universal anode material. The cathode sliding connecting rod, the thermocouple cathode connecting wire group and the cathode connecting wire are made of the same thermocouple universal cathode material. The number of the anode connecting wires, the number of the cathode connecting wires and the number of the flexible thermocouple film connectors are kept consistent.
The position data measured by the fixed scale is transmitted and recorded in the temperature data recording and transmitting device through the compensation lead group and the data transmission connecting interface;
the pressing sheet is made of an aluminum sheet with high heat resistance and plasticity and is used for fully contacting the temperature measuring area of the flexible thermocouple film with the heating hole of the dry thermostat to be measured.
The temperature measuring area refers to the overlapping part of the flexible thermocouple anode and the flexible thermocouple cathode.
The tabletting support is provided with threads, is made of stainless steel materials and is used for connecting the flexible thermocouple film connector, the length of the tabletting and the tabletting support can be adjusted, and the tabletting support is connected with the tabletting through a fastener.
Alternatively, the test base 1 may have the following structure:
the device comprises a base, a plurality of groups of flexible thermocouple film connecting jacks, a fixer, a fixing hole, a fixed scale, a pressing sheet supporting column, a compensation wire group and a data transmission connecting interface. The test base is made of an insulating non-metallic material. The plurality of groups of flexible thermocouple film connecting jacks, the fixing holes, the fixed scale, the compensation lead group and the data transmission connecting interface are fixed on the base. According to the size of the dry-type thermostat to be tested and the testing requirements of the position of the heating hole, the number and the position of the film connected with the flexible thermocouple are determined, and the position data measured by the scaling ruler is transmitted and recorded in the temperature data recording and transmitting device through the compensation lead group and the data transmission connection interface. The pressing sheet is used for fully contacting the temperature measuring area of the flexible thermocouple film with the heating hole of the dry-type thermostat to be measured. The pressing sheet support is provided with threads for connecting a fixer and adjusting the length of the pressing sheet support and the pressing sheet, and the pressing sheet support are connected by a fastener.
The flexible thermocouple film comprises a flexible substrate, a flexible insulating layer, a flexible thermocouple anode, a flexible thermocouple cathode, a protective layer, an anode connecting sheet, a cathode connecting sheet and a connecting sheet fixing member.
The flexible basement adopts flexible high temperature resistant, the fast metal material of heat conduction, and flexible insulating layer adopts high temperature resistant insulating material, and flexible thermocouple positive pole, flexible thermocouple negative pole adopt general thermocouple electrode material preparation, and positive pole connection piece material is the same with flexible thermocouple positive pole material, negative pole connection piece material is the same with flexible thermocouple negative pole material. And no other material is introduced in the connection process, so that the error of temperature measurement is avoided, and the protective layer is made of a high-temperature-resistant insulating material. The connecting sheet fixing part is made of an insulating non-metallic material.
The flexible insulating layer is attached to the surface of the flexible substrate by adopting a screen printing method, a spraying method and a plasma sputtering method.
The flexible thermocouple anode and the flexible thermocouple cathode are prepared on the flexible insulating layer by adopting a plasma sputtering method and a screen printing method, the flexible thermocouple anode and the flexible thermocouple cathode are sequentially prepared, the flexible thermocouple anode and the flexible thermocouple cathode are partially overlapped, and the overlapped part is a thermal connection area of a flexible thermocouple film, namely a temperature measurement area;
the protective layer is prepared by a plasma method, a screen printing method and a spraying method, covers the flexible thermocouple anode and the flexible thermocouple cathode, and exposes the heat connecting area.
Connecting sheets are connected to two sides of the flexible thermocouple film, namely, the anode of the flexible thermocouple is connected with the anode connecting sheet, and the cathode of the flexible thermocouple is connected with the cathode connecting sheet and is fixedly connected with the cathode connecting sheet through the connecting sheet fixing piece.
The compensation lead group comprises a group of compensation leads and two compensation lead interfaces, the anode of each compensation lead is made of the same material as the anode of the flexible thermocouple, the cathode of each compensation lead is made of the same material as the cathode of the flexible thermocouple, and the anode of the flexible thermocouple and the cathode of the flexible thermocouple are made of universal thermocouple electrode materials. One end of the compensating conductor set is electrically connected with the test base, and the other end of the compensating conductor set is electrically connected with the temperature data recording and transmitting device.
The temperature data recording and transmitting device comprises: the temperature and humidity sensor comprises a compensation lead group interface, a temperature and humidity probe, a signal transceiving module and a data processing and storing module. The temperature data recording and transmitting device has the data processing and storing functions and the signal receiving and transmitting functions, and the temperature data recording and transmitting device internally comprises a temperature and humidity probe, so that the environmental temperature and humidity data can be recorded, and meanwhile, the temperature data of each flexible thermocouple film can be compared. The number of the temperature measuring channels of the flexible thermocouple film can be started according to the size of the dry thermostat, a temperature measuring distribution point position diagram is generated, and data of each temperature measuring channel is recorded. All relevant data are recorded in the data processing and storage module and are sent to the cloud server for recording and saving.
The cloud server comprises a user authentication module, a control module, a storage module and a report generation module, and is operated through software. Through high in the clouds server, the detection engineer can set up measurement parameter, survey measurement process in real time through mobile terminal according to the detection demand.
The temperature data recording and transmitting device and the cloud server can also be replaced by a temperature data recorder, so that the data can be observed and recorded on site in real time. The compensation lead group is directly connected to a temperature data recorder, and the real-time temperature of each flexible thermocouple film is observed and recorded through the temperature data recorder, but the system self-checking and remote observation functions cannot be realized.
The invention also discloses a temperature calibration test method of the dry thermostat, which comprises the following steps:
1. checking whether the dry-type thermostat temperature calibration device works normally, wherein the general power-on preheating time is 30 minutes.
2. Connecting: a flexible thermocouple film of the dry-type thermostat temperature calibration device is fixedly connected with a test base, and is connected with a compensation lead group and a temperature data recording and transmitting device.
3. System self-checking: and detecting the temperature data of the flexible thermocouple films of the channels, comparing the temperature data with the temperature data in the temperature data recording and transmitting device 4, and recording the temperature data, wherein when the deviation exceeds +/-0.3 ℃, the mobile terminal of the detection engineer receives the warning of the abnormality of the sensor.
4. Arranging a flexible thermocouple film: attaching the flexible thermocouple film to the test holes of the dry thermostat to be calibrated, and when the number of the test holes of the dry thermostat is less than or equal to 4 × 4, preferably arranging the flexible thermocouple film at the position of the central test hole; when the number of the single-side test holes of the dry-type thermostat is more than 4, the flexible thermocouple films are additionally arranged in the test holes at the two ends of the side; when the number of the test holes on the two sides of the dry-type thermostat is more than 4, a flexible thermocouple film is additionally arranged on the test holes on the four sides. And the flexible thermocouple film temperature measuring area is fully contacted with the heating hole of the dry thermostat to be measured through the pressing sheet of the test base. And automatically/manually adjusting the positions of the flexible thermocouple film connector and the transverse sliding connecting rod according to the number and the positions of the test holes of the tested dry-type thermostat.
5. Data acquisition: and starting a temperature data recording and transmitting device of the dry-type thermostat temperature calibration device, connecting the temperature data recording and transmitting device with a cloud server, and setting a data sampling interval (a time interval of 2 times of sampling) by a detection engineer through the cloud. And after the tested dry-type thermostat reaches the set temperature for 30 minutes, starting data sampling, recording the temperature data of each flexible thermocouple film, and calculating the data such as the temperature average value, the temperature deviation, the temperature uniformity, the temperature fluctuation and the like of the data measured by each flexible thermocouple film through a cloud server. And recording the position relation and the distance between the flexible thermocouple films during testing through a fixed scale of the testing base.
6. Data export: and after the recording is finished, closing data sampling through the cloud server, and then generating a calibration report according to the requirement.
7. System rechecking: and detecting the temperature data of the flexible thermocouple films of the channels again, comparing the temperature data with the temperature data in the temperature data recording and transmitting device, and recording, wherein when the temperature deviation exceeds +/-0.3 ℃, the mobile terminal of the detection engineer receives the prompt of the abnormality of the sensor. The calibration device before and after the calibration of the dry-type thermostat is ensured to work normally, and data is reliable.
8. And (3) completing the test: and closing the dry-type thermostat temperature calibration device, and taking out the arranged flexible thermocouple film after the dry-type thermostat temperature is restored to the room temperature to complete the test.
The invention has the beneficial effects that: the temperature measuring element is attached to the surface of the heating metal block of the dry thermostat. The connecting rod is adopted, the positions of the flexible thermocouple film and the fixed pressing sheet can be adjusted according to the dry type thermostats with different sizes and specifications, and the compatibility is high. The flexible thermocouple film adopts a metal substrate, a flexible insulating layer, a thermocouple anode, a thermocouple cathode and a protective layer structure; the metal substrate ensures flexibility and good heat conductivity, and the temperature response speed of the dry-type thermostat temperature calibration device is improved; the protective layer exposes out of the heat connecting area, so that the anode and the cathode of the thermocouple are protected, and simultaneously, the low error and the high sensitivity of the temperature measuring area are ensured. By adopting the Internet + technology, the mode that an original engineer needs to perform field detection is changed, the measurement parameters can be set in real time through the mobile terminal, the measurement process can be observed in real time, and the method has wide application prospect.
Drawings
FIG. 1 is a schematic diagram of a dry thermostat calibration apparatus of the present invention.
FIG. 2 is a schematic view of a test base of the present invention.
FIG. 3 is a schematic diagram of the connection of the sliding connecting rod of the test base, the transverse sliding connecting rod (9), the compensating wire set and the data transmission connection interface according to the present invention.
FIG. 4 is a schematic view of a test base holding tab of the present invention.
FIG. 5 is a schematic view of the flexible thermocouple film structure of the present invention.
Fig. 6 is a schematic diagram of a compensating lead set structure according to the present invention.
Fig. 7 is a schematic structural diagram of a temperature data recording and transmitting device of the invention.
FIG. 8 is a flow chart of a testing method of the present invention.
Fig. 9 is a schematic of the dry-thermostat (3 x 5 holes) flexible thermocouple film layout of the present invention.
FIG. 10 is a schematic structural diagram of a test base of the present invention.
FIG. 11 is a schematic view of a fixed blade in the test base of the present invention.
In fig. 1-11: 1-test base, 2-flexible thermocouple membrane, 3-compensation lead group, 4-temperature data recording and transmitting device, 5-cloud server, 6-base, 7-sliding connecting rod, 8-flexible thermocouple membrane connector, 9-transverse sliding connecting rod, 10-scale, 11-tabletting prop, 12-tabletting, 13-compensation lead group and data transmission connecting interface, 14-flexible base, 15-flexible insulating layer, 16-flexible thermocouple anode, 17-flexible thermocouple cathode, 18-protective layer, 19-anode connecting sheet, 20-cathode connecting sheet, 21-connecting sheet fixing member, 22-compensation lead, 23-compensation lead interface, 24-compensation lead group interface, 25-temperature and humidity probe, 26-signal receiving and transmitting module, 27-temperature data processing and storing module, 28-anode sliding connecting rod, 29-cathode sliding connecting rod, 30-thermocouple anode connecting wire group, 31-thermocouple cathode connecting wire group, 32-anode connecting wire, 33-cathode connecting wire, 34-flexible membrane connecting wire, 35-fixing member, and socket 36-fixing hole.
Detailed Description
The invention is further described in detail with reference to the following specific examples and the accompanying drawings. The procedures, conditions, experimental methods and the like for carrying out the present invention are general knowledge and common general knowledge in the art except for the contents specifically mentioned below, and the present invention is not particularly limited.
Examples
A temperature calibration device for a dry-type thermostat comprises a test base 1, at least one group of flexible thermocouple films 2, a compensation lead group 3, a temperature data recording and transmitting device 4 and a cloud server 5;
wherein, flexible thermocouple film 2 adopts connection piece and socket connection with test base 1, adopts electrical connection between compensation wire group 3 and temperature data record emitter 4, and temperature and humidity probe 25 adopts electrical connection with temperature data record emitter 4, adopts wireless internet networking transmission between temperature data record emitter 4 and high in the clouds server 5.
The test base 1 comprises a base 6, a sliding connecting rod 7, at least one group of flexible thermocouple film connectors 8, a transverse sliding connecting rod 9, a scaling ruler 10, a pressing sheet support post 11, a pressing sheet 12, a compensation lead group and a data transmission connecting interface 13; the base 6 is made of a silicon plate; the sliding connecting rod 7 is divided into an anode sliding connecting rod 28 and a cathode sliding connecting rod 29 and is made of a universal thermocouple material; the positive pole of the compensation lead group 3 is made of a copper material, the negative pole is made of a universal thermocouple material, each flexible thermocouple film connector 8 corresponds to one group of positive pole connecting wires 32 and negative pole connecting wires 33, each transverse sliding connecting rod 9 internally comprises at least one group of positive pole connecting wires 32 and negative pole connecting wires 33, and the transverse sliding connecting rods 7 and 9 are connected with the compensation lead group and the data transmission connecting interface 13. One ends of the anode sliding connecting rod 28 and the cathode sliding connecting rod 29 are connected with the transverse sliding connecting rod 9 by adopting a track, and the other ends are electrically connected with the compensation lead group and the data transmission connecting interface 13. The flexible thermocouple thin film connector 8 is connected with the transverse sliding connecting rod 9 through a rail, the flexible thermocouple thin film connector 8 is made of a silicon plate, the flexible thermocouple thin film connector 8 is in threaded connection with the pressing sheet supporting column 11, the pressing sheet 12 is made of an aluminum sheet with high heat resistance and plasticity, and the pressing sheet supporting column 11 is made of a stainless steel material. The flexible thermocouple thin film connector 8 is connected with the flexible thermocouple thin film 2 in a socket and connecting piece mode. According to the size of the dry-type thermostat to be tested and the position test requirement of the heating hole, the number and the position of the flexible thermocouple films 2 are determined, and the position data measured by the fixed scale 10 is transmitted and recorded in the temperature data recording and transmitting device 4 through the compensation lead group and the data transmission connecting interface 13. The preform 12 is used to bring the temperature measurement area of the flexible thermocouple film 2 into sufficient contact with the measured dry-thermostat heating hole. The pressing piece support post 11 is provided with threads for connecting the fixer 8, the length of the pressing piece 12 and the pressing piece support post 11 can be adjusted, and the pressing piece support post 11 and the pressing piece 12 are connected by a fastener.
The sliding connecting rod 7 is divided into an anode sliding connecting rod 28 and a cathode sliding connecting rod 29, and the anode sliding connecting rod 28 is connected with the compensation lead group and the data transmission connecting interface 13 through a thermocouple anode connecting line group 30; the cathode slide connecting rod 29 is connected with the compensation lead group and the data transmission connecting interface 13 through a thermocouple cathode connecting wire group 31. Each transverse sliding bar 9 comprises at least one set of anode connecting wires 32 and cathode connecting wires 33. One end of the anode connecting wire 32 is connected with the flexible thermocouple film anode connecting sheet 19 by adopting a jack and a connecting sheet, and the other end is connected with the anode sliding connecting rod 28 by adopting a track. One end of the cathode connecting wire 33 is connected with the cathode connecting piece 20 pole of the flexible thermocouple film by adopting a jack and a connecting piece, and the other end is connected with the cathode sliding connecting rod 29 by adopting a track. The anode slide connecting rod 28, the thermocouple anode connecting wire group 30 and the anode connecting wire 32 are made of copper. The cathode sliding connecting rod 29, the thermocouple cathode connecting wire group 31 and the cathode connecting wire 33 are made of constantan. Each group of transverse sliding connecting rods is provided with 3 anode connecting wires 32, 3 cathode connecting wires 33 and 3 flexible thermocouple thin film connectors 8, and the total number of the transverse sliding connecting rods 9 is 3.
The method comprises the following steps of determining the number and the positions of the films connected with the flexible thermocouples according to the size of the tested dry-type thermostat and the position test requirements of the heating hole, wherein the method specifically comprises the following three conditions:
1) When the number of the test holes of the dry-type thermostat is less than or equal to 4 x 4, a flexible thermocouple film is preferably arranged at the position of the central test hole;
2) When the number of the single-side test holes of the dry-type thermostat is more than 4, the test holes at the two ends of the side are additionally provided with a flexible thermocouple film respectively;
3) When the number of the test holes on the two sides of the dry-type thermostat is more than 4, a flexible thermocouple film is additionally arranged on the test holes on the four sides.
The test base 1 may also be:
the device comprises a base 6, a plurality of groups of flexible thermocouple film connecting sockets 34, a fixer 35, a fixing hole 36, a scaling rule 10, a pressing sheet support 11, a pressing sheet 12, a compensation wire group and a data transmission connecting interface 13. The test base is made of an insulating non-metallic material. Base 6 adopts the silicon slab preparation, and the 34 positive poles of flexible thermocouple connection socket adopt the copper product, the negative pole adopts the constantan material, fixer 35 to adopt insulating screw, and fixed orifices 36 size is 1mm 3mm, and preforming 12 adopts the aluminum sheet preparation that heat-resisting plasticity is strong, and preforming pillar 11 adopts stainless steel material. According to the actual need, 5 by 5 groups of flexible thermocouple film connecting sockets 34 are arranged, and the distance between each group is 20mm. The flexible thermocouple film connecting socket 34, the fixing hole 36, the scaling rule 10, the compensation lead group and the data transmission connecting interface 13 are fixed on the base 6. According to the size of the dry-type thermostat to be tested and the testing requirement of the position of the heating hole, the number and the position of the flexible thermocouple films 2 are determined, and the position data measured by the measuring scale 10 are transmitted and recorded in the temperature data recording and transmitting device 4 through the compensating lead group and the data transmission connecting interface 13. The pressing piece 12 is used to bring the flexible thermocouple film 2 into sufficient contact with the heating hole of the dry thermostat to be tested. The pressing sheet support post 11 is provided with threads for connecting the fixing device 35, the length of the pressing sheet support post 11 and the length of the pressing sheet 12 can be adjusted, and the pressing sheet 12 and the pressing sheet support post 11 are connected through a fastening piece.
The flexible substrate 14 is made of an aluminum sheet, the flexible insulating layer 15 is made of a polyimide material, the flexible thermocouple anode 16 is made of copper, the flexible thermocouple cathode 17 is made of constantan material, and the flexible insulating layer 15 is arranged on the surface of the flexible substrate 14 by a screen printing method.
The flexible thermocouple anode 16 and the flexible thermocouple cathode 17 are prepared on the flexible insulating layer 15 by adopting a plasma sputtering method, the flexible thermocouple anode 16 and the flexible thermocouple cathode 17 are prepared in sequence, the flexible thermocouple anode 16 and the flexible thermocouple cathode 17 are partially overlapped, and the overlapped part is a thermal connection area of the flexible thermocouple, namely a temperature measurement area;
the plasma sputtering preparation conditions of the flexible thermocouple film 2 were determined as follows: 1) Copper-nickel alloy (constantan) film: under the argon atmosphere of 1Pa, adopting 150W direct current to sputter for 40 minutes to obtain a metal film layer with the thickness of (900-1000) nm; 2) Copper film formation: under an argon atmosphere of 1Pa, a metal film layer having a thickness of 1000nm was obtained by DC sputtering with 90W for 40 minutes.
The protective layer 18 is made of polyimide material by a spraying method, covers the flexible thermocouple anode 16 and the flexible thermocouple cathode 17, and exposes a thermal connection area.
Connecting pieces are connected to two sides of the flexible thermocouple film 2, the anode connecting piece 19 is made of copper, and the cathode connecting piece 20 is made of constantan. And no other material is introduced in the connection process, so that the error of temperature measurement is avoided.
The connection tabs 19, 20 are connected to the flexible thermocouple membrane 2 using fasteners.
The compensation lead group 3 comprises a compensation lead 22 and two compensation lead interfaces 23, wherein the anode of the compensation lead is made of copper, and the cathode of the compensation lead is made of constantan. One end of the compensating conductor group 3 is electrically connected with the test base 1, and the other end is electrically connected with the temperature data recording and transmitting device 4.
The temperature data recording and transmitting device 4 includes: the device comprises a compensating lead group interface 24, a temperature and humidity probe 25, a signal transceiving module 26 and a data processing and storing module 27. The temperature data recording and transmitting device 4 has a data processing and storing function and a signal receiving and transmitting function, and a temperature and humidity probe 25 is arranged inside the temperature data recording and transmitting device 4, so that environmental temperature and humidity data can be recorded, and meanwhile, the temperature data of the flexible thermocouple films 2 can be compared. The number of the temperature measuring channels of the flexible thermocouple film can be started according to the size of the dry thermostat, a temperature measuring distribution point position diagram is generated, and data of each temperature measuring channel is recorded. All relevant data are recorded in the data processing and storing module 27 and sent to the cloud server 5 for recording and saving.
Through high in the clouds server 5, the detection engineer can set up measurement parameter, survey measurement process in real time through mobile terminal according to the detection demand. The cloud server 5 comprises a user authentication module, a control module, a storage module and a report generation module which are connected by software.
For example, a 3 by 5 orifice dry thermostat was calibrated by the following steps: 1. checking whether the dry-type thermostat temperature calibration device works normally or not, wherein the general power-on preheating time is 30 minutes. 2. Connecting: the flexible thermocouple film 2 of the dry-type thermostat temperature calibration device is fixedly connected with the test base 1 and is connected with the compensation lead group 3.3. System self-checking: and detecting the temperature data of the flexible thermocouple films 2 of all the channels, comparing the temperature data with the temperature data in the temperature data recording and transmitting device 4, and recording the temperature data, wherein when the deviation exceeds +/-0.3 ℃, the mobile terminal of the detection engineer receives the warning of the abnormality of the sensor. 4. Positioning of the flexible thermocouple film 2: attaching the flexible thermocouple film 2 to the test holes of the dry-type thermostat to be calibrated, and when the number of the test holes of the dry-type thermostat is less than or equal to 4 x 4, preferably arranging the flexible thermocouple film 2 at the position of the central test hole; when the number of the single-side test holes of the dry-type thermostat is more than 4, the test holes at the two ends of the side are additionally provided with a flexible thermocouple film 2 respectively; when the number of the test holes on the two sides of the dry-type thermostat is more than 4, the flexible thermocouple films 2 are additionally arranged on the test holes on the four sides. The calibrated thermostat was 3 x 5 holes, so 3 flexible thermocouple films 2 were laid out. Through the test base pressing sheet 12, the temperature measuring area of the flexible thermocouple film 2 is fully contacted with the heating holes of the tested dry-type thermostat, and the device automatically adjusts the positions of the flexible thermocouple film connector 8 and the transverse sliding connecting rod 9 according to the number and the positions of the testing holes of the tested dry-type thermostat. 5. Data acquisition: and starting a temperature data recording and transmitting device 4 of the dry-type thermostat temperature calibration device, connecting the temperature data recording and transmitting device with a cloud server 5, and setting a data sampling interval (a time interval of 2 times of sampling) by a detection engineer through a cloud. And after the dry-type thermostat to be tested reaches the set temperature for 30 minutes, starting data sampling, recording the temperature data of each flexible thermocouple film 2, and calculating the data such as the temperature average value, the temperature deviation, the temperature uniformity, the temperature fluctuation degree and the like of the data measured by each flexible thermocouple film 2 through the cloud server 5. The positional relationship and the distance between the flexible thermocouple films 2 at the time of the test are recorded by the test base scale 10. 6. Data export: after the recording is completed, the data sampling is closed through the cloud server 5, and then a calibration report is generated as required. 7. System rechecking: and detecting the temperature data of the flexible thermocouple films 2 of the channels again, comparing the temperature data with the temperature data in the temperature data recording and transmitting device 4, and recording the temperature data, wherein when the deviation exceeds +/-0.3 ℃, the mobile terminal of the detection engineer receives the prompt that the sensor is abnormal. The calibration device before and after the calibration of the dry thermostat is ensured to work normally, and data is reliable. 8. And (3) completing the test: and (3) closing the dry-type thermostat temperature calibration device, and taking out the arranged flexible thermocouple film 2 after the dry-type thermostat temperature is restored to the room temperature to complete the test.
The protection of the present invention is not limited to the above embodiments. Variations and advantages that may occur to those skilled in the art are intended to be included within the invention without departing from the spirit and scope of the inventive concept, and the scope of the invention is to be determined by the appended claims.
Claims (10)
1. A thermostat temperature calibration test method for use in a dry thermostat temperature calibration test using a dry thermostat temperature calibration apparatus, the method comprising the steps of:
1) Checking whether the dry-type thermostat temperature calibration device works normally or not, wherein the power-on preheating time is 30 minutes;
2) Connecting and fixing a flexible thermocouple film (2) of the dry-type thermostat temperature calibration device with a test base (1), and connecting a compensation lead group (3) and a temperature data recording and transmitting device (4);
3) Detecting the temperature data of the flexible thermocouple films (2) of each channel, comparing the temperature data with the temperature data in the temperature data recording and transmitting device (4), and recording the temperature data, wherein the detection engineer mobile terminal receives the prompt that the deviation exceeds +/-0.3 ℃ and receives the abnormity of the sensor;
4) The flexible thermocouple film (2) is attached to a test hole of the dry-type thermostat to be calibrated, and the temperature measuring area of the flexible thermocouple film (2) is in full contact with the heating hole of the dry-type thermostat to be measured through the pressing sheet (12) of the test base (1); and automatically/manually adjusting the positions of the flexible thermocouple film connector and the transverse sliding connecting rod according to the number and the positions of the test holes of the tested dry-type thermostat.
5) Starting a temperature data recording and transmitting device (4) of the dry-type thermostat temperature calibration device to be connected with a cloud server (5), setting a time interval of every 2 times of data sampling by a detection engineer through a cloud, starting data sampling after the dry-type thermostat to be detected reaches a set temperature for 30 minutes, recording temperature data of all flexible thermocouple films (2), calculating a temperature average value, a temperature deviation, a temperature uniformity and temperature fluctuation data of all flexible thermocouple films (2) through the cloud server (5), and recording a position relation and a distance among all flexible thermocouple films during testing through a fixed scale (10) of a testing base (1);
6) After the recording is finished, the data sampling is closed through the cloud server (5), and then a calibration report is generated;
7) The temperature data of the flexible thermocouple films (2) of each channel are detected again, compared with the temperature data in the temperature data recording and transmitting device (4), and recorded, and the detection engineer mobile terminal with the deviation exceeding +/-0.3 ℃ receives the warning of the abnormality of the sensor;
8) And closing the dry-type thermostat temperature calibration device, and taking out the arranged flexible thermocouple film (2) after the dry-type thermostat temperature is restored to the room temperature to finish the test.
2. The thermostat temperature calibration test method of claim 1, wherein the dry thermostat temperature calibration device comprises: the device comprises a test base (1), at least one group of flexible thermocouple films (2), a compensation lead group (3), a temperature data recording and transmitting device (4) and a cloud server (5);
the test base (1) and the flexible thermocouple film (2) are connected with a socket through a connecting sheet; the compensation lead group (3) is electrically connected with the test base (1); the compensation lead group (3) is electrically connected with the temperature data recording and transmitting device (4); the temperature data recording and transmitting device (4) and the cloud server (5) are in wireless transmission;
the test base (1) comprises a base (6), a sliding connecting rod (7), at least one group of flexible thermocouple film connectors (8), a transverse sliding connecting rod (9), a scaling ruler (10), a pressing sheet support post (11), a pressing sheet (12), a compensation lead group and a data transmission connecting interface (13);
the test base (1) is made of an insulating non-metallic material; the sliding connecting rod (7), the scaling plate (10), the compensation lead group and the data transmission connecting interface (13) are fixed on the base (6);
the sliding connecting rods (7), namely the anode sliding connecting rod (28) and the cathode sliding connecting rod (29), are all made of universal thermocouple materials; one ends of the anode sliding connecting rod (28) and the cathode sliding connecting rod (29) are connected with the transverse sliding connecting rod (9) by adopting tracks, and the other ends are electrically connected with the compensation lead group and the data transmission connecting interface (13); the anode sliding connecting rod (28) is connected with the compensation lead group and the data transmission connecting interface (13) through a thermocouple anode connecting line group (30); the cathode sliding connecting rod (29) is connected with the compensation lead group and the data transmission connecting interface (13) through a thermocouple cathode connecting wire group (31); the positions of the sliding connecting rod (7) and the transverse sliding connecting rod (9) are automatically or manually adjusted according to the actual aperture position and the number of the dry-type thermostats to be measured;
the flexible thermocouple thin film connector (8) is made of an insulating non-metal material and is made of a silicon plate, is connected with the transverse sliding connecting rod (9) through a rail and can slide on the transverse sliding connecting rod (9); the flexible thermocouple film connector (8) is connected with the compensation lead group and the data transmission connection interface (13) through a sliding connection rod (7) and a transverse sliding connection rod (9);
the transverse sliding connecting rod (9) comprises at least one group of anode connecting wires (32) and cathode connecting wires (33), and each flexible thermocouple thin film connector (8) corresponds to one group of anode connecting wires (32) and cathode connecting wires (33); one end of the anode connecting wire (32) is connected with the flexible thermocouple film anode connecting sheet (19) by adopting a socket and a connecting sheet, and the other end of the anode connecting wire is connected with the anode sliding connecting rod (28) by adopting a track; one end of the cathode connecting wire (33) is connected with the cathode connecting sheet (20) of the flexible thermocouple film by adopting a socket and a connecting sheet, and the other end of the cathode connecting wire is connected with the cathode sliding connecting rod (29) by adopting a track; the anode sliding connecting rod (28), the thermocouple anode connecting wire group (30) and the anode connecting wire (32) are made of the same thermocouple universal anode material; the cathode sliding connecting rod (29), the thermocouple cathode connecting wire group (31) and the cathode connecting wire (33) are made of the same thermocouple universal cathode material; the number of the anode connecting wires (32), the number of the cathode connecting wires (33) and the number of the flexible thermocouple thin film connectors (8) are kept consistent;
the position data measured by the fixed scale (10) is transmitted and recorded in the temperature data recording and transmitting device (4) through the compensation lead group and the data transmission connection interface (13);
the pressing piece support post (11) is provided with threads, is made of stainless steel materials and is used for connecting the flexible thermocouple film connector (8), the lengths of the pressing piece (12) and the pressing piece support post (11) are adjusted, and the pressing piece support post (11) is connected with the pressing piece (12) through a fastener; the flexible thermocouple film connector (8) is connected with the flexible thermocouple film (2) in a socket and connecting piece mode;
the pressing sheet (12) is made of an aluminum sheet with high heat resistance and plasticity, and the temperature measuring area of the flexible thermocouple film (2) is in full contact with the heating hole of the dry-type thermostat to be measured.
3. The thermostat temperature calibration test method according to claim 1, characterized in that the test base (1) comprises a base (6), at least one set of flexible thermocouple film connection sockets (34), a holder (35), a fixing hole (36), a scaling plate (10), a pressing plate (12), a pressing plate support (11), a compensation wire set and a data transmission connection interface (13);
the test base (1) is made of an insulating non-metallic material;
the flexible thermocouple film connecting socket (34), the fixing hole (36), the scale (10), the compensation lead group and the data transmission connecting interface (13) are fixed on the base (6);
the number and the positions of the flexible thermocouple films (2) are determined according to the size of the dry thermostat to be tested and the testing requirements of the positions of the heating holes;
the position data measured by the fixed scale (10) is transmitted and recorded in the temperature data recording and transmitting device (4) through the compensation lead group and the data transmission connecting interface (13);
the pressing sheet (12) enables the temperature measuring area of the flexible thermocouple film (2) to be fully contacted with the heating hole of the dry-type thermostat to be measured;
the fixer (35) is connected with the thread on the pressing sheet support post (11), the lengths of the pressing sheet support post (11) and the pressing sheet (12) are adjusted, and the pressing sheet (12) is connected with the pressing sheet support post (11) through a fastener.
4. The thermostat temperature calibration test method of claim 1, characterized in that the flexible thermocouple membrane (2) comprises a flexible substrate (14), a flexible insulation layer (15), a flexible thermocouple anode (16), a flexible thermocouple cathode (17), a protective layer (18), an anode connection tab (19), a cathode connection tab (20), a connection tab fixing (21).
5. The thermostat temperature calibration test method according to claim 4, wherein the flexible substrate (14) is made of a flexible high-temperature-resistant metal material with high heat conduction speed, the flexible insulating layer (15) is made of a high-temperature-resistant insulating material, the flexible thermocouple anode (16) and the flexible thermocouple cathode (17) are made of a universal thermocouple electrode material, the anode connecting sheet (19) is made of the same material as the flexible thermocouple anode (16), the cathode connecting sheet (20) is made of the same material as the flexible thermocouple cathode (17), the protective layer (18) is made of a high-temperature-resistant insulating material, and the connecting sheet fixing piece (21) is connected with the flexible substrate (14), the flexible insulating layer (15), the flexible thermocouple anode (16) or the flexible thermocouple cathode (17), the anode connecting sheet (19) or the cathode connecting sheet (20) through fasteners; the connecting piece fixing piece (21) is made of an insulating non-metal material.
6. The thermostat temperature calibration test method according to claim 4, wherein the flexible insulating layer (15) is attached to the surface of the flexible substrate (14) by screen printing, spraying, plasma sputtering;
the flexible thermocouple anode (16) and the flexible thermocouple cathode (17) are prepared on the flexible insulating layer (15) by adopting a plasma sputtering method and a screen printing method, the flexible thermocouple anode (16) and the flexible thermocouple cathode (17) are sequentially prepared, the flexible thermocouple anode (16) and the flexible thermocouple cathode (17) are partially overlapped, and the overlapped part is a heat connecting area of the flexible thermocouple film, namely a temperature measuring area;
the protective layer (18) is prepared by a plasma method, a screen printing method and a spraying method, covers the flexible thermocouple anode (16) and the flexible thermocouple cathode (17), and exposes the heat connecting area;
the flexible thermocouple anode (16) is connected with the anode connecting sheet (19), the flexible thermocouple cathode (17) is connected with the cathode connecting sheet (20), and the flexible thermocouple anode and the flexible thermocouple cathode are all fixedly connected by a connecting sheet fixing piece (21).
7. The thermostat temperature calibration test method according to claim 1, wherein the number and the positions of the flexible thermocouple films (2) are determined according to the test requirements of the size and the position of the heating hole of the connected dry-type thermostat to be tested, and specifically comprises the following steps:
1) When the number of the dry-type thermostat test holes is less than or equal to 4 x 4, arranging the flexible thermocouple film at the position of the central test hole; 2) When the number of the single-side test holes of the dry-type thermostat is more than 4, the flexible thermocouple films are additionally arranged in the test holes at the two ends of the side; 3) And when the number of the test holes on the two sides of the dry-type thermostat is more than 4, arranging one flexible thermocouple film on each of the test holes on the four sides.
8. The thermostat temperature calibration test method of claim 4, characterized in that the compensation lead group (3) includes a group of compensation leads (22) and two compensation lead interfaces (23), the compensation lead anode is made of the same material as the flexible thermocouple anode (16), the compensation lead cathode is made of the same material as the flexible thermocouple cathode (17), and the flexible thermocouple anode (16) and the flexible thermocouple cathode (17) are made of common thermocouple electrode materials.
9. Thermostat temperature calibration test method according to claim 1, characterized in that the temperature data record emitting means (4) comprise: the temperature and humidity sensor comprises a compensation lead group interface (24), a temperature and humidity probe (25), a signal transceiving module (26) and a data processing and storing module (27);
a temperature and humidity probe (25) is arranged in the temperature data recording and transmitting device (4), the number of temperature measuring channels of the flexible thermocouple film is started according to the size of the dry thermostat, a temperature measuring distribution point position diagram is generated, and data of each temperature measuring channel are recorded; all relevant data are recorded in the data processing and storage module (27) and are sent to the cloud server (5) for recording and saving.
10. The thermostat temperature calibration testing method of claim 1, wherein the cloud server (5) includes a user authentication module, a control module, a storage module, a report generation module, which are operated by software;
and/or the presence of a gas in the gas,
temperature data record emitter (4) and high in the clouds server (5) also can adopt the temperature data record appearance to replace, will compensation wire group (3) direct access temperature data record appearance observes and records the real-time temperature of each flexible thermocouple film (2) through the temperature data record appearance, but can't realize system self-checking and long-range observation function.
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| CN202110002405.9A CN113108927B (en) | 2021-01-04 | 2021-01-04 | Temperature calibration device for dry-type thermostat |
| CN202211132449.4A CN115452201A (en) | 2021-01-04 | 2021-01-04 | Thermostat temperature calibration test method |
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| US5281025A (en) * | 1993-01-14 | 1994-01-25 | International Business Machines Corp. | Temperature sensing device for dynamically measuring temperature fluctuation in a tip of a bonding device |
| DE102007003754A1 (en) * | 2007-01-19 | 2008-07-24 | Eppendorf Ag | Temperature control device with calibration device |
| SE538428C2 (en) * | 2015-03-23 | 2016-06-21 | Nok9 Ab | A testing device for wireless power transfer, and an associated method |
| CN204944690U (en) * | 2015-05-13 | 2016-01-06 | 宏大矿业有限公司 | A kind of multipoint thermocouple being applied to coal mine fire zone big gun hole quick temperature measurement |
| US9606552B2 (en) * | 2015-08-26 | 2017-03-28 | Google Inc. | Thermostat with multiple sensing systems integrated therein |
| CN110196075B (en) * | 2018-02-27 | 2022-02-08 | 上海市计量测试技术研究院 | Remote temperature and humidity testing method for environmental test equipment calibration |
| CN108489627B (en) * | 2018-03-13 | 2020-07-03 | 大连交通大学 | Thin-film thermocouple temperature sensor embedded in multilayer PCB (printed Circuit Board), transient temperature monitoring system and method |
| CN209639836U (en) * | 2018-11-29 | 2019-11-15 | 南京史帝芬控制设备有限公司 | A kind of thermostat temperature collecting device |
| CN110715756A (en) * | 2019-11-18 | 2020-01-21 | 天津市计量监督检测科学研究院 | Tube furnace temperature field performance testing device under load condition and performance testing method thereof |
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