CN219084238U - Temperature calibration device - Google Patents
Temperature calibration device Download PDFInfo
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- CN219084238U CN219084238U CN202222054543.4U CN202222054543U CN219084238U CN 219084238 U CN219084238 U CN 219084238U CN 202222054543 U CN202222054543 U CN 202222054543U CN 219084238 U CN219084238 U CN 219084238U
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Abstract
The utility model discloses a temperature calibration device, which comprises an intracavity data acquisition device and a data analysis control device, wherein the intracavity data acquisition device is used for acquiring data of a cavity; the intracavity data acquisition device is connected with the data analysis control device in a wireless mode. The utility model can ensure the real-time transmission of the measurement data under the condition of ensuring the complete sealing of the sterilizer, and can meet the requirements of the temperature calibration test of the sterilizer.
Description
Technical Field
The utility model belongs to the technical field of temperature calibration and test, and relates to a temperature calibration device.
Background
The high-pressure steam sterilization method has a wide application field as a common sterilization method. Is commonly used in the fields of biological pharmacy, medicine and health, food production and the like. The principle of the high-pressure steam sterilization method is that the steam pressure can rise along with the rise of temperature in a high-airtight device, so that the sterilization effect is achieved. Therefore, the actual working temperature of the high-pressure steam sterilizer directly influences the sterilization effect, and is particularly important as high-risk equipment for clinical application to perform periodic temperature detection and calibration. The design of an accurate and efficient temperature calibration device for the high-pressure sterilizer is a precondition for ensuring the safe and reliable operation of the high-pressure sterilizer.
The high-pressure steam sterilizer cavity is made of metal, has higher sealing requirement, and is in a high-temperature high-pressure high-humidity environment during working. At present, two common temperature testing methods of the high-pressure steam sterilizer at home and abroad are available:
1. testing by adopting a wireless temperature data acquisition device:
the wireless temperature data collector is used for recording the temperature data collected by the sensor in the collector. Before testing, a corresponding program is set, and the collector is placed at the center point of the cavity of the tested sterilizer for calibration. After the test is finished, the recorded data is read through a signal converter matched with a computer and software. The temperature test precision of the data collector is +/-0.1 ℃, nearly 2 tens of thousands of data can be recorded at one time, the working power is the lithium battery in the equipment, and the service life is about 5 years. The calibration mode is that no external connecting wire is introduced, so that the cavity of the sterilizer is well sealed, and the data is ensured to be true and reliable. However, the initial cost of the device reaches approximately one hundred thousand yuan, the service life is only about five years, the data are required to be read and analyzed by a computer, the real-time temperature data cannot be obtained, and the accurate temperature deviation data cannot be obtained. Thus, such devices have not been widely deployed in the community of basic metering calibration institutions, sterilizer users, and the like.
2. The thermocouple is adopted to cooperate with a temperature data recorder for testing:
the thermocouple is a common temperature measuring sensor, one end of a thinner T-shaped thermocouple (the general wire diameter is not more than 1.0 mm) is arranged at the center point of the cavity of the high-pressure steam sterilizer, the cabin door of the high-pressure steam sterilizer is covered and sealed as much as possible, and after the high-pressure steam sterilizer starts to work, a small amount of steam overflows through the thermocouple leading-out port, but the high-pressure steam sterilizer still can continue to work. When the high-pressure steam sterilizer is in a sterilization state, the temperature data are acquired through the data acquisition device. The testing process can monitor the temperature data of the box body in real time and compare and calibrate with the temperature data displayed by the sterilizer. The method uses the thermocouple widely used at present, so that the calibration of the high-pressure steam sterilizer is convenient and simple, but due to the introduction of the thermocouple, the whole sterilization process always has the existence of air leakage points, the test result can be influenced to a certain extent, meanwhile, certain potential safety hazards exist, and the existence of the air leakage points can cause measurement errors.
In addition, due to the airtight structure of the high-pressure steam sterilizer, the traditional wireless signal transmission method (such as wifi, bluetooth, infrared and 5G signals) cannot penetrate through the cavity structure of the high-pressure steam sterilizer, so that the current common wireless temperature data acquisition system cannot read the real-time internal temperature of the high-pressure steam sterilizer. In the process of calibrating the temperature of the sterilizer, accurate real-time temperature data are required to be read, and in order to reduce test errors, the formation of extra air leakage points in the sterilization process is required to be stopped, so that two common methods for testing the temperature of the autoclave are not applicable.
Disclosure of Invention
In order to solve the defects existing in the prior art, the utility model aims to provide a temperature calibration device of a high-pressure steam sterilizer.
Aiming at the problems in the prior art, the high-pressure steam sterilizer temperature calibration device provided by the utility model ensures real-time transmission of measurement data under the condition of ensuring that the sterilizer is completely sealed, and can meet the requirements of sterilizer temperature calibration test.
The utility model provides a temperature calibration device of a high-pressure steam sterilizer, which comprises an intracavity data acquisition device and a data analysis control device;
the intracavity data acquisition device is connected with the data analysis control device in a wireless mode.
The intracavity data acquisition device consists of a temperature sensor, a test bracket, a data transmitter and a power supply control module;
the temperature sensor, the data transmitter and the power supply control module are connected through wires respectively.
The temperature sensor comprises sensor forms such as a thermocouple, a thermal resistor and the like, and is used for collecting temperature data in the cavity of the sterilizer to be tested and transmitting the temperature data to the data transmitter; the data transmitter is responsible for compiling and transmitting signals transmitted by the temperature sensor; the power supply control module is used for providing power supply for the temperature sensor and the data transmitter.
The data transmitter is provided with a data transmitting end, the data transmitting end is attached to the inner shell of the cavity of the tested sterilizer, and can be generally arranged at the position of a metal top cover of the cavity of the sterilizer, and the acquired data is compiled and transmitted in a microwave mode.
Preferably, the test support consists of supporting legs, supporting columns and a test platform; the number of the supporting legs is more than or equal to 3, and the supporting legs are connected with the support column through a hinge structure and are fixedly fastened by using fasteners; the support is provided with a scale, and the position of the test platform in the sterilizing pot to be tested is controlled by adjusting the length of the support; the test platform is fixedly connected with the support column through a fastener.
Preferably, a temperature sensor connecting hole is formed in the test platform; the temperature sensor is installed in the temperature sensor connecting hole in a matched mode.
The data analysis control device comprises a data receiver, a data record analysis device and a control module;
the data receiver, the data record analysis device and the control module are connected through wires;
the data receiver is provided with a data receiving end, and the data receiving end is attached to a similar position outside the cavity of the tested sterilizer, corresponding to the data transmitting end inside the cavity, and is used for receiving the microwave signals transmitted by the data transmitter;
the data recording and analyzing device records real-time temperature data to obtain a calibration result;
the control module can be used for controlling the intracavity data acquisition device, and the control of the intracavity data acquisition device is carried out signal transmission through microwaves by the data receiver and the data transmitter; in general, the data transceiver of the intracavity data acquisition device will automatically activate when it is affixed to the intracavity housing.
The beneficial effects of the utility model include:
1. according to the utility model, the data transmitter and the data receiver are attached to the inner side and the outer side of the high-pressure steam sterilizer cavity, the high-pressure steam sterilizer cavity is used as a carrier for signal transmission, and the data transmitter transmits in a microwave mode, so that the problems that wireless signal shielding and wired signals cannot guarantee tightness are effectively solved. The real-time transmission of temperature data can be realized. The problem of temperature measurement error caused by air leakage existing in the traditional thermocouple (the minimum wire diameter is 0.7 mm) is broken through. Meanwhile, the problem that the traditional wireless data acquisition instrument cannot acquire actual temperature data in the cavity in real time is broken through.
Drawings
FIG. 1 is a schematic diagram showing the constitution of a temperature calibration device for a high-pressure steam sterilizer according to the present utility model.
FIG. 2 is a detailed view showing the constitution of the temperature calibration device of the high-pressure steam sterilizer of the present utility model.
FIG. 3 is a temperature, pressure versus time diagram of an autoclave according to the present utility model. The sterilizing process of the high-pressure steam sterilizer is divided into three stages, namely a non-pressure temperature-raising stage, a high-pressure temperature-raising stage and a constant-temperature stage. When the high-pressure steam sterilizer starts to work (0-21 minutes), the automatic exhaust valve is in an open state, the inside of the cavity of the high-pressure steam sterilizer is in a heating state, but the internal pressure and the external pressure are basically in a balanced state due to the opening of the exhaust valve, and the pressure at the stage is basically equivalent to the atmospheric pressure. When the exhaust valve is closed, the high-pressure steam sterilizer starts to be in a high-pressure temperature-rising state (21-31 minutes), and the pressure of the closed cavity rises rapidly along with the rising of the temperature. When the temperature in the cavity of the high-pressure steam sterilizer reaches within the range of +/-1 ℃ of the set temperature, the high-pressure steam sterilizer starts sterilization, and the sterilization stage is a constant-temperature sterilization stage (after 31 minutes), and the temperature and the pressure in the cavity are basically kept in a constant state until the sterilization is completed. The device can detect and calibrate the temperature in the cavity of the sterilizer in real time.
Fig. 4 is a block diagram of a test rack according to the present utility model.
FIG. 5 is a block diagram of a test platform and related components of the present utility model.
The device comprises a 1-intracavity data acquisition device, a 3-data analysis control device, a 4-temperature sensor, a 6-test support, an 8-data transmitter, a 9-power supply control module, a 12-data receiver, a 13-data recording analysis device, a 14-control module, a 15-support leg, a 16-support post, a 17-test platform and an 18-temperature sensor connecting hole.
Detailed Description
The present utility model will be described in further detail with reference to the following specific examples and drawings. The procedures, conditions, experimental methods, etc. for carrying out the present utility model are common knowledge and common knowledge in the art, except for the following specific references, and the present utility model is not particularly limited.
The embodiment provides a temperature calibration device of a high-pressure steam sterilizer, which consists of an intracavity data acquisition device 1 and a data analysis control device 3. The intracavity data acquisition device 1 is connected with the data analysis control device 3 in a wireless mode.
In this embodiment, the intracavity data acquisition device 1 is composed of a temperature sensor 4, a test stand 6, a data transmitter 8, and a power supply control module 9. The temperature sensor 4 and the data transmitter 8 are connected with the power control module 9 by leads.
The data analysis control device 3 is composed of a data receiver 12, a data record analysis device 13 and a control module 14. The data receiver 12 is connected with the data record analysis device 13 and the control module 14 by leads.
The test stand 6 consists of a supporting leg 15, a supporting column 16 and a test platform 17. The number of the legs is generally 3 or more, and the legs are connected with the support column by a hinge structure and are fixedly fastened by using fasteners. The support is provided with a staff gauge, the length of the support can be adjusted according to the size of the cavity of the high-pressure steam sterilizer, and the test platform is ensured to be positioned in the geometric middle position of the cavity of the high-pressure steam sterilizer. The test platform is fixedly connected with the support column by adopting a fastener. The test platform 17 is provided with a temperature sensor connecting hole 18. The test platform 17 is connected with the temperature sensor 4 through a temperature sensor connection hole 18. The test platform 17 is connected with the power control module 9.
Intracavity data acquisition device 1: the temperature sensor 4 is composed of a thermocouple, a thermal resistor and the like, the collected data are transmitted to the data transmitter 8, and the temperature sensor 4 is fixed on the test support 6. The data transmitter 8 is responsible for compiling and transmitting signals transmitted by the temperature sensor 4, and because of the metal cavity of the high-pressure steam sterilizer and the high tightness thereof, the data is difficult to transmit by a wireless network transmission mode, the data transmitter is attached to the inner shell of the cavity of the high-pressure sterilizer by adopting the modes of magnet, adhesion, binding and the like, and the acquired data is compiled and transmitted by a microwave mode. And the data receiving end of the data receiver 12 in the data analysis control device 3 is also attached to the similar position outside the autoclave cavity corresponding to the data transmitting end inside the cavity in a mode of magnet, adhesion, binding and the like outside the autoclave cavity, and receives the microwave signal transmitted by the data transmitter 8. The power control module 9 provides power for the temperature sensor 4 and the data transmitter 8, adopts airtight design, ensures stable work under high-temperature, high-pressure and high-humidity environment, adopts a wireless charging mode, and is not provided with an independent switch for ensuring module tightness, and when the module is fixed on the test support 6, the intracavity data acquisition device 1 is automatically started and is automatically closed after being taken down.
Data analysis control device 3: the data receiving end of the data receiver 12 is attached to the outside of the autoclave cavity by means of magnets, adhesion, binding, etc. for receiving the intra-cavity data. The data recording and analyzing device 13 records real-time temperature data to obtain the temperature calibration result of the high-pressure steam sterilizer. The control module 14 is used for controlling the intracavity data acquisition device 1.
The device of this embodiment is different from traditional wireless transmission mode, and this embodiment adopts data transmitter, data receiver laminating outside the high pressure steam sterilizer cavity, uses the high pressure steam sterilizer cavity as signal transmission's carrier, and through microwave mode transmission, has effectively broken through wireless signal shielding, wired signal can't guarantee the problem of seal. The real-time transmission of temperature data and sterilization conditions can be realized.
The specific use of the device of this embodiment may employ the following steps:
step 1: determining the geometric center position of the cavity of the high-pressure steam sterilizer: the temperature sensor 4 and the power supply control module 9 are fixed on the test support 6, the intracavity data acquisition device 1 starts to work, and the data transmitter 8 is attached to the inner shell of the cavity of the high-pressure steam sterilizer.
Step 2: the data receiving end of the data receiver 12 in the data analysis control device 3 is attached to the position outside the cavity of the high-pressure steam sterilizer to be detected, which corresponds to the data transmitting end inside the cavity, the preheating high-pressure steam sterilizer temperature calibration device 10 is started, and the temperature inside the cavity of the high-pressure steam sterilizer can be checked through the data analysis control device 3.
Step 3: setting the temperature of the high-pressure steam sterilizer to be the calibrated temperature T s The sterilization time is set to be 30min, and the working temperature is raised.
Step 4: when the temperature display value of the high-pressure steam sterilizer reaches the set temperature, starting the sterilization countdown, after 10min, starting to read the temperature data of the temperature sensor 4 through the data analysis control device 3, testing 1 data per minute, and recording as T after 10 times of total testing 1 ，T 2 ，……，T 10 The average value is
n=10; synchronously observing the temperature display value T of the high-pressure steam sterilizer at the moment x1 ，T x2 ，……，T x10 The average value is->
n＝10；
Step 5: calculating a sterilizer temperature deviation, wherein the deviation
High pressure steam sterilizer chamber temperature fluctuation degree delta T j ＝±(T max -T min )/2. T in max Maximum of 10 test data, T min For 10 test dataMinimum value. The actual pressure value in the sterilizer cavity can be obtained through an ideal gas state equation. The device of the utility model can be also applied to other existing calibration calculation methods.
The protection of the present utility model is not limited to the above embodiments. Variations and advantages that would occur to one skilled in the art are included within the utility model without departing from the spirit and scope of the inventive concept, and the scope of the utility model is defined by the appended claims.
Claims (5)
1. The temperature calibration device is characterized by comprising an intracavity data acquisition device and a data analysis control device;
the intracavity data acquisition device is connected with the data analysis control device in a wireless mode;
the intracavity data acquisition device consists of a temperature sensor, a test bracket, a data transmitter and a power supply control module; the temperature sensor, the data transmitter and the power supply control module are connected through wires respectively;
the data analysis control device comprises a data receiver, a data record analysis device and a control module; the data receiver, the data record analysis device and the control module are connected through wires; the data receiver is provided with a data receiving end, and the data receiving end is attached to a similar position outside the cavity of the tested sterilizer, corresponding to the data transmitting end inside the cavity, and is used for receiving the microwave signals transmitted by the data transmitter; the data recording and analyzing device records real-time temperature data; the control module is used for controlling the intracavity data acquisition device.
2. The temperature calibration device of claim 1, wherein the temperature sensor comprises a thermocouple, a thermal resistor, and the temperature data in the measured sterilizer chamber is collected and transmitted to the data transmitter; the data transmitter is responsible for transmitting signals transmitted by the temperature sensor; the power supply control module is used for providing power supply for the temperature sensor and the data transmitter.
3. The temperature calibration device according to claim 2, wherein the data transmitter is provided with a data transmitting end, and the data transmitting end is attached to the inner housing of the cavity of the sterilizer to be tested and transmits the acquired data in a microwave manner.
4. The temperature calibration device of claim 1, wherein the test rack is comprised of legs, struts, and a test platform; the number of the supporting legs is more than or equal to 3, and the supporting legs are connected with the support column through a hinge structure and are fixedly fastened by using fasteners; the support is provided with a scale, and the position of the test platform in the sterilizing pot to be tested is controlled by adjusting the length of the support; the test platform is fixedly connected with the support column through a fastener.
5. The temperature calibration device of claim 4, wherein the test platform is provided with a temperature sensor connection hole; the temperature sensor is installed in the temperature sensor connecting hole in a matched mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222054543.4U CN219084238U (en) | 2022-08-05 | 2022-08-05 | Temperature calibration device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222054543.4U CN219084238U (en) | 2022-08-05 | 2022-08-05 | Temperature calibration device |
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| CN219084238U true CN219084238U (en) | 2023-05-26 |
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| CN202222054543.4U Active CN219084238U (en) | 2022-08-05 | 2022-08-05 | Temperature calibration device |
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