Hydrogen peroxide corrosion prevention device for sensor
By installing the catalyst module and sealing structure on the sensor, and using the hollow-shaped breathable structure of the catalyst carrier, the problem of shortening the life of the sensor in the hydrogen peroxide environment is solved, and the low-cost and efficient decomposition of hydrogen peroxide is achieved without affecting the performance of the incubator.
Patent Information
- Application Number
- CN202421897363.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-07
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-08-07
AI Technical Summary
Existing sensors have shorter service life in hydrogen peroxide environments, and existing solutions such as heating components or micro-pressurized air solutions can affect incubator performance or be complex in structure and costly.
The catalyst mounting sleeve and catalyst module are used to make hydrogen peroxide enter the catalyst module in one-way through the sealing structure for catalytic decomposition, the hollowed-shaped breathable structure of the catalyst support increases the contact area, and the use of stainless steel and polytetrafluoroethylene materials ensures that the structure is simple and easy to disassemble.
Effectively decompose hydrogen peroxide, protect the sensor from corrosion, keep the incubator performance unchanged, low cost and easy to install and disassemble.
Smart Images
Figure CN223189197U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of incubators, in particular to a sensor anti-hydrogen peroxide corrosion device. Background Art
[0002] At present, there are many models of carbon dioxide concentration sensors on the market. The carbon dioxide concentration sensor is used to monitor the carbon dioxide concentration in the incubator to ensure the appropriate gas concentration for cell growth. Specifically, in some cell culture systems, vaporized hydrogen peroxide sterilization is carried out. During the use process, due to the corrosiveness of hydrogen peroxide, it will greatly affect the service life of the electronic components in the concentration sensor. The service life of the sensor in such an environment is far less than that in a normal environment.
[0003] At present, in order to eliminate the negative impact brought by the corrosiveness of hydrogen peroxide, a heating component is usually added to the detection part of the sensor, and the hydrogen peroxide is decomposed by heating due to its thermal instability. The disadvantage is that the heating component placed inside the incubator will cause the internal temperature to be too high and the temperature uniformity to be affected, which will directly affect the performance of the incubator. Another method is to connect micro-pressure air to form a slightly positive pressure near the detection end of the sensor, so that the hydrogen peroxide gas cannot diffuse to the area affected by the sensor. In this solution, the opening time of the micro-pressure air connection needs to be limited to the hydrogen peroxide sterilization stage and closed during the culture stage, otherwise it will affect the reading of the sensor. The disadvantages are: additional gas circuits and controls are required, and the structure is relatively cumbersome.
[0004] CN217265805U discloses a carbon dioxide incubator with hydrogen peroxide sterilization, including a carbon dioxide incubator box body, an ultraviolet lamp, a hydrogen peroxide atomizer, a hydrogen peroxide bottle, and a programmable logic controller. The ultraviolet lamp is used to irradiate and decompose the hydrogen peroxide after sterilization to generate oxygen and water, which can effectively decompose hydrogen peroxide and will not shorten the service life of the sensor. However, there are problems that the ultraviolet lamp needs to be equipped with an ultraviolet lamp controller and connected to the programmable logic controller, with a cumbersome structure and high cost.
[0005] Therefore, finding a sensor anti-hydrogen peroxide corrosion device that does not affect the performance of the incubator, has no impact on the culture environment, has a simple structure, is easy to disassemble, has a low cost, and has a good hydrogen peroxide decomposition effect is a problem that needs to be solved currently. Summary of the Invention
[0006] The utility model aims to provide a sensor anti-hydrogen peroxide corrosion device that does not affect the performance of the incubator, has no impact on the culture environment, has a simple structure, is easy to disassemble, has a low cost, and has a good hydrogen peroxide decomposition effect.
[0007] The utility model solves the above technical problems through the following technical solutions.
[0008] The utility model provides a sensor anti-hydrogen peroxide corrosion device, which includes a catalyst installation sleeve and a catalyst module. The catalyst module is installed in the catalyst installation sleeve, and the catalyst installation sleeve is installed at one end of the sensor. There is a first sealing ring between the sensor and the catalyst installation sleeve. The sensor is connected to the incubator through the catalyst module. On the side of the front end of the sensor, a part inside the catalyst installation sleeve is provided with a first sealing ring. Hydrogen peroxide enters the catalyst module for decomposition through unidirectional air intake during free diffusion. The catalyst catalyzes the decomposition of hydrogen peroxide, with good decomposition effect and no impact on the performance of the incubator. The structure is simple, the disassembly is convenient, and the cost is relatively low.
[0009] Preferably, the catalyst module includes a catalyst carrier and a catalyst body. The catalyst carrier has a dense air chamber, and the catalyst body is added into the catalyst carrier to form a hollow and breathable structure. The catalyst carrier having a dense air chamber means that there are a large number of voids in the catalyst carrier, which can increase the contact area between the catalyst and hydrogen peroxide, effectively decompose hydrogen peroxide, and at the same time does not affect the CO2 sensor to detect the CO2 concentration. In addition, the catalyst module is in a columnar structure with a height of 3 - 40 mm.
[0010] Preferably, the air intake end of the catalyst installation sleeve is a mesh hollow structure. It can protect the catalyst and enable hydrogen peroxide to enter the catalyst module for decomposition.
[0011] Preferably, there is a retaining ring between the catalyst module and the front end of the sensor. The retaining ring can fix the catalyst module.
[0012] Preferably, the retaining ring is in a circular ring structure.
[0013] Preferably, the catalyst module is in a columnar structure.
[0014] Preferably, the sensor is installed on the incubator through a sensor installation sleeve.
[0015] Preferably, the sensor installation sleeve is installed at any position close to the center on the side surface, the bottom surface or the shelf of the incubator.
[0016] Preferably, the sensor installation sleeve is installed at a position close to the center on the side surface of the incubator.
[0017] Preferably, the installation direction of the sensor installation sleeve is perpendicular to the hydrogen peroxide gas flow direction inside the incubator.
[0018] Preferably, the catalyst module is installed inside the catalyst installation sleeve.
[0019] Preferably, the front end of the sensor is arranged inside the catalyst installation sleeve, and there is a first sealing ring between the catalyst installation sleeve and the side of the front end of the sensor. The first sealing ring forms a sealing structure to enable unidirectional air intake of hydrogen peroxide.
[0020] Preferably, a second sealing ring is provided between the sensor and the sensor mounting sleeve to form a sealing structure to prevent the leakage of hydrogen peroxide gas in the incubator.
[0021] Preferably, the sensor mounting sleeve is of a cylindrical structure and is installed on the incubator using a hand-tightening screw. This facilitates the installation and disassembly of the sensor mounting sleeve.
[0022] Preferably, the material of the sensor mounting sleeve is polytetrafluoroethylene. Polytetrafluoroethylene has poor adsorption of hydrogen peroxide gas, preventing hydrogen peroxide from being adsorbed into the material interior and affecting the incubator environment.
[0023] Preferably, the material of the catalyst mounting sleeve is stainless steel 316L, which has strong corrosion resistance.
[0024] The beneficial effects of the present utility model are as follows:
[0025] Utilizing the characteristic that hydrogen peroxide has unstable chemical properties, catalytic decomposition is carried out using a catalyst. A catalyst carrier with dense air chambers is selected and a catalyst is added as a catalyst module to form a hollow-shaped breathable structure. A certain sealing structure is adopted to make it intake air unidirectionally, enabling the gas to pass through the catalyst module, effectively reducing the concentration of hydrogen peroxide in the incubator, reducing the corrosion of the sensor probe by hydrogen peroxide, protecting the sensor, and not affecting the performance of the incubator. Moreover, the structure is simple, the cost is low, the sensor mounting sleeve is installed using a hand-tightening screw, the disassembly is simple, and the catalyst completely decomposes hydrogen peroxide to avoid corrosion of the sensor. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 It is a schematic diagram of the structure of a sensor anti-hydrogen peroxide corrosion device.
[0027] Figure 2 It is an installation schematic diagram of a sensor anti-hydrogen peroxide corrosion device.
[0028] In the figure, it includes 1. catalyst mounting sleeve, 2. catalyst module, 3. first sealing ring, 4. sensor, 5. retaining ring, 6. sensor mounting sleeve, 7. incubator, 7-1. incubator cavity, 7-2. incubator insulation layer, 8. second sealing ring. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0029] The following further describes the present utility model in conjunction with the drawings and the specific embodiments.
[0030] Figure 1A sensor anti-hydrogen peroxide corrosion device shown in the figure includes a catalyst installation sleeve 1, a catalyst module 2, a first sealing ring 3, a sensor 4, and a retaining ring 5. The catalyst module 2 is installed inside the catalyst installation sleeve 1. The catalyst module 2 includes a catalyst carrier and a catalyst. The catalyst carrier has a dense air chamber, and there are a large number of voids in the catalyst carrier. The catalyst body is filled into the catalyst carrier to form a hollow-shaped breathable structure. This can increase the contact area between the catalyst and hydrogen peroxide, effectively decompose hydrogen peroxide, and at the same time does not affect the CO2 sensor's measurement of the CO2 concentration. The front end of the catalyst installation sleeve 1 is provided with a mesh hollow structure, which is convenient for hydrogen peroxide to enter the catalyst module 2 and also plays a role in protecting the catalyst. The material of the catalyst installation sleeve 1 is stainless steel 316L.
[0031] The catalyst module 2 is of a cylindrical structure. There is a retaining ring 5 between the catalyst module 2 and the sensor 4. The retaining ring 5 fixes the catalyst module 2, and the retaining ring is of a circular ring structure.
[0032] The front end of the sensor 4 is arranged inside the catalyst installation sleeve 1. There is a first sealing ring 3 between the side of the front end of the sensor 4 and the catalyst installation sleeve 1, forming a sealed structure.
[0033] As Figure 2 A sensor anti-hydrogen peroxide corrosion device shown in the figure includes a sensor installation sleeve 6, an incubator 7, a first sealing ring 3, an incubator cavity 7-1, and an incubator insulation layer 7-2. There is a first sealing ring 3 between the sensor installation sleeve 6 and the sensor 4, forming a sealed structure to prevent hydrogen peroxide gas in the incubator 7 from leaking. The sensor installation sleeve 6 is made of polytetrafluoroethylene, and polytetrafluoroethylene has poor adsorption of hydrogen peroxide gas, which can improve the decomposition rate of hydrogen peroxide. The sensor installation sleeve 6 is of a cylindrical structure. The sensor installation sleeve 6 is installed on the incubator 7 by hand-tightening screws, which is convenient for the installation and disassembly of the sensor installation sleeve. The sensor 4 is installed in the incubator cavity 7-1 through the sensor installation sleeve 6, and the incubator insulation layer 7-2 is installed outside the incubator 7 to insulate the incubator 7.
[0034] Example 1
[0035] A device for preventing hydrogen peroxide corrosion of a sensor. The sensor 4 is installed and fixed on the incubator 7 through the sensor mounting sleeve 6 by hand-tightening screws. The front end of the sensor 4 is inserted into the cavity 7-1 of the incubator. The incubator insulation layer 7-2 is installed on the outside of the incubator 7 to insulate the incubator 7. A second sealing ring 8 is provided between the sensor mounting sleeve 6 and the sensor 4. The second sealing ring 8 forms a sealed structure for the incubator 7 to prevent hydrogen peroxide gas in the incubator 7 from leaking. The sensor mounting sleeve 6 is made of polytetrafluoroethylene, and polytetrafluoroethylene has poor adsorption of hydrogen peroxide gas, which improves the hydrogen peroxide decomposition rate.
[0036] The sensor mounting sleeve 6 is installed at a position near the center on the rear partition of the incubator 7, and the installation direction is perpendicular to the air flow direction inside the incubator. The front end of the sensor 4 is connected to one side of the retaining ring 5, and the other side of the retaining ring 5 is connected to the rear end of the catalyst module 2. The retaining ring 5 fixes the catalyst module 2. The catalyst module 2 is a hollow and breathable structure, which can increase the contact area between the catalyst and hydrogen peroxide, effectively decompose hydrogen peroxide, and at the same time does not affect the CO2 sensor to measure the CO2 concentration.
[0037] The catalyst module 2 is installed in the catalyst mounting sleeve 1. The catalyst mounting sleeve 1 is also connected to the side of the front end of the sensor 4. A first sealing ring 3 is provided between the catalyst mounting sleeve 1 and the side of the front end of the sensor 4. The first sealing ring 3 forms a sealed structure for the incubator 7 to allow hydrogen peroxide to enter unidirectionally. The front end of the catalyst module 2 is provided with a mesh-like hollow, which can protect the catalyst in the catalyst module 2, facilitate the entry of hydrogen peroxide into the catalyst module 2 for decomposition, and prevent hydrogen peroxide gas from corroding the sensor 4.
[0038] The catalyst mounting sleeve 1 is made of stainless steel 316L and has strong corrosion resistance. The catalyst mounting sleeve 1 installs and fixes the catalyst module 2 at the front end of the sensor 4. The catalyst module 2 catalytically decomposes the unidirectionally incoming hydrogen peroxide gas with high decomposition efficiency and does not affect the performance of the incubator 7 or the cultivation environment inside the incubator 7.
[0039] Example 2
[0040] A sensor anti-hydrogen peroxide corrosion device. The sensor 4 is installed and fixed on the incubator 7 through the sensor mounting sleeve 6 by hand-tightening screws. The front end of the sensor 4 is inserted into the cavity 7-1 of the incubator. The incubator insulation layer 7-2 is installed on the outside of the incubator 7 to insulate the incubator 7. A second sealing ring 8 is provided between the sensor mounting sleeve 6 and the sensor 4. The second sealing ring 8 makes the incubator 7 form a sealed structure to prevent the leakage of hydrogen peroxide gas in the incubator 7. The sensor mounting sleeve is made of polytetrafluoroethylene, and polytetrafluoroethylene has poor adsorption of hydrogen peroxide gas, which improves the decomposition rate of hydrogen peroxide.
[0041] The sensor mounting sleeve 6 is installed at a position near the center of the bottom surface of the incubator 7, and the installation direction is perpendicular to the air flow direction inside the incubator. The front end of the sensor 4 is connected to one side of the retaining ring 5, and the other side of the retaining ring 5 is connected to the rear end of the catalyst module 2. The retaining ring 5 fixes the catalyst module 2. The catalyst module 2 is a hollow and breathable structure, which can increase the contact area between the catalyst and hydrogen peroxide, effectively decompose hydrogen peroxide, and at the same time does not affect the CO2 sensor to measure the CO2 concentration.
[0042] The catalyst module 2 is installed in the catalyst mounting sleeve 1. The catalyst mounting sleeve 1 is also connected to the front end of the sensor 4. A first sealing ring 3 is provided between the catalyst mounting sleeve 1 and the side of the front end of the sensor 4. The sealing ring forms a sealed structure to make hydrogen peroxide enter unidirectionally. A mesh hollow is provided at the front end of the catalyst module 2, which can protect the catalyst in the catalyst module 2, facilitate the entry of hydrogen peroxide into the catalyst module 2 for decomposition, and prevent the hydrogen peroxide gas from corroding the sensor 4.
[0043] The catalyst mounting sleeve 1 is made of stainless steel 316L, which has strong corrosion resistance. The catalyst mounting sleeve 1 installs and fixes the catalyst module 2 at the front end of the sensor 4. The catalyst module 2 catalytically decomposes the unidirectionally incoming hydrogen peroxide gas with high decomposition efficiency and does not affect the performance of the incubator 7 and has no impact on the culture environment in the incubator 7.
[0044] Example 3
[0045] A device for preventing a sensor from being corroded by hydrogen peroxide. The sensor 4 is fixedly installed on the incubator 7 through the sensor mounting sleeve 6 by hand-tightening screws. The front end of the sensor 4 is inserted into the cavity 7-1 of the incubator. The incubator insulation layer 7-2 is installed on the outside of the incubator 7 to insulate the incubator 7. A second sealing ring 8 is provided between the sensor mounting sleeve 6 and the sensor 4. The second sealing ring 8 forms a sealed structure for the incubator 7 to prevent hydrogen peroxide gas in the incubator 7 from leaking. The sensor mounting sleeve is made of polytetrafluoroethylene, and polytetrafluoroethylene has poor adsorption of hydrogen peroxide gas, which improves the hydrogen peroxide decomposition rate.
[0046] The sensor mounting sleeve 6 is installed at a position close to the center on the incubator shelf of the incubator 7, and the installation direction is perpendicular to the air flow direction in the incubator 7. The front end of the sensor 4 is connected to one side of the retaining ring 5, and the other side of the retaining ring 5 is connected to the rear end of the catalyst module 2. The retaining ring 5 fixes the catalyst module 2. The catalyst module 2 is a hollow and breathable structure, which can increase the contact area between the catalyst and hydrogen peroxide, effectively decompose hydrogen peroxide, and at the same time does not affect the CO2 sensor to measure the CO2 concentration.
[0047] The catalyst module 2 is installed in the catalyst mounting sleeve 1. The catalyst mounting sleeve 1 is also connected to the front side of the sensor 5. A first sealing ring 3 is provided between the catalyst mounting sleeve 1 and the front side of the sensor 4. The first sealing ring 3 forms a sealed structure for the incubator to allow hydrogen peroxide to enter unidirectionally. A mesh hollow is provided at the front end of the catalyst module 2, which can protect the catalyst in the catalyst module 2, facilitate the entry of hydrogen peroxide into the catalyst module 2 for decomposition, and prevent the hydrogen peroxide gas from corroding the sensor 4.
[0048] The catalyst mounting sleeve 1 is made of stainless steel 316L, which has strong corrosion resistance. The catalyst mounting sleeve 1 installs and fixes the catalyst module 2 at the front end of the sensor 4. The catalyst module 2 catalytically decomposes the unidirectionally incoming hydrogen peroxide gas with high decomposition efficiency and does not affect the performance of the incubator 7 or the cultivation environment in the incubator 7.
[0049] The utility model utilizes the characteristic that hydrogen peroxide has unstable chemical properties, and uses a catalyst for catalytic decomposition, effectively reducing the concentration of hydrogen peroxide in the incubator 7, not affecting the performance of the incubator 7, having a simple structure, low cost, using hand-tightening screws to install the sensor mounting sleeve 6, being simple to disassemble, and the catalyst completely decomposes hydrogen peroxide to prevent the sensor 4 from being corroded by hydrogen peroxide.
[0050] Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present utility model.
Claims
1. A sensor anti-hydrogen peroxide corrosion device, characterized in that: The invention comprises a catalyst installation sleeve (1) and a catalyst module (2), wherein the catalyst module (2) is installed in the catalyst installation sleeve (1), the catalyst installation sleeve (1) is installed at one end of a sensor (4), and the sensor (4) is connected to an incubator (7) through the catalyst module (2).
2. A sensor anti-hydrogen peroxide corrosion device according to claim 1, characterized in that: A sealing ring (3) is provided between the sensor (4) and the catalyst mounting sleeve (1).
3. The sensor anti-hydrogen peroxide corrosion device according to claim 2, characterized in that: The sensor (4) is arranged on the side surface of the incubator, the bottom surface of the incubator or the shelf of the incubator. A sensor mounting sleeve (6) is provided at the mounting position of the sensor (4). The sensor mounting sleeve (6) is a cylindrical structure. The mounting direction of the sensor mounting sleeve (6) is perpendicular to the airflow direction in the incubator.
4. The sensor anti-hydrogen peroxide corrosion device according to claim 1, characterized in that: The catalyst module (2) is a columnar structure with a height of 3 to 40 mm.
5. The sensor anti-hydrogen peroxide corrosion device according to claim 1, characterized in that: A retaining ring (5) is provided between the catalyst module (2) and the sensor (4).
6. The sensor anti-hydrogen peroxide corrosion device according to claim 5, characterized in that: The retaining ring (5) is a circular ring structure.
7. The sensor anti-hydrogen peroxide corrosion device according to claim 3, characterized in that: A second sealing ring (8) is provided between the sensor mounting sleeve (6) and the sensor (4).
8. A sensor anti-hydrogen peroxide corrosion device according to claim 1, 4 or 5, characterized in that: The catalyst module (2) is a hollowed-out, air-permeable structure. The catalyst module (2) is composed of a catalyst carrier and a catalyst. The hollowed-out, air-permeable structure forms a plurality of dense air chambers inside the catalyst carrier, and the catalyst is arranged inside the catalyst carrier.
9. A sensor anti-hydrogen peroxide corrosion device according to claim 1 or 2, characterized in that: The front end of the catalyst installation sleeve (1) is a mesh hollow structure.