Gas concentration pipeline detection tool

Abstract

The invention discloses a gas concentration pipeline detection tool. A gas concentration sensor is a sensor based on a tdlas technology. The air inlet of the detection pipeline is provided with the temperature sensor, so that the detection tool can monitor the temperature of the air inlet pipeline and the air outlet pipeline in real time, a low-temperature point can be detected in time, and maintenance-free continuous use of the sensor is realized. A reflecting lens and an emergent lens of the gas concentration sensor are respectively hidden in the lens protection opening and the first assembly opening and are not directly exposed in a flow channel of the detection pipeline, so that the reflecting lens and the emergent lens are not directly impacted by the flowing-in detection gas, and impurities in the gas are not remained on the lenses; and after the lens is used and the normal temperature is recovered, the lens is not condensed and remained, so that the maintenance frequency of the lens is greatly reduced, and the maintenance frequency of the sensor is reduced.

Description

Technical Field

[0001] The invention relates to the field of pipeline sterilization gas detection, in particular to a gas concentration pipeline detection tool. Background Art

[0002] In the food filling industry, all kinds of beverage filling require the use of beverage filling equipment to fill and cap bottled beverages. Since beverages belong to the food industry and are closely related to human health, it is necessary to ensure the sterility of the entire beverage filling process. Usually, a certain concentration of hydrogen peroxide gas needs to be introduced into the filling equipment for sterilization and disinfection. The hydrogen peroxide gas is transported through a pipeline, and the concentration of hydrogen peroxide in the pipeline needs to be detected in real time to ensure that the hydrogen peroxide gas is always within a reasonable sterilization concentration range. Sensors need to be installed in the pipeline to detect the concentration of hydrogen peroxide gas. Due to the different diameters of the pipelines and the inconsistent temperatures of the pipelines of different beverage filling lines, the sensors cannot be installed uniformly. Therefore, a pipeline installation tool that meets different pipe diameters and different temperatures is required to install the sensor, and it can be quickly disassembled after the test is completed or when the instrument is maintained to avoid abnormal shutdown of the beverage filling equipment after the sensor is disassembled.

[0003] When beverage filling equipment sterilizes the internal space with hydrogen peroxide gas, pipes of various diameters and temperatures are required to transport the hydrogen peroxide gas from the source to the locations that need sterilization. In order to detect whether the concentration of hydrogen peroxide generated at the source is correct and whether there is any loss in the concentration of hydrogen peroxide gas during transportation, it is necessary to detect the concentration of hydrogen peroxide gas in real time. There are various sensors on the market for detecting hydrogen peroxide concentration, but most sensors have losses when detecting hydrogen peroxide concentration and have a short service life. Among them, the sensor using TDLAS technology uses optical principles to monitor hydrogen peroxide gas and has a long service life, but it has the defects of requiring regular maintenance of the lens, limited installation environment and not being able to withstand high temperature environments. This installation tooling perfectly solves this defect problem. Summary of the invention

[0004] In order to solve the problems existing in the prior art during use, the present invention provides a gas concentration pipeline detection tooling which can realize multiple uses and realize the maintenance-free and continuous use of the sensor.

[0005] The technical solution of the present invention to solve the existing problems is: a gas concentration pipeline detection tool, including a detection pipeline, a working chamber arranged in the detection pipeline, and a temperature sensor for detecting the gas temperature. The detection pipeline is located in the working chamber and is provided with an air inlet connected to the air inlet pipeline at one end, and an air outlet connected to the air outlet pipeline at the other end. As an improvement, a gas concentration sensor is provided in the detection pipeline, a first assembly port for installing the gas concentration sensor is provided on one side of the detection pipeline, and a lens protection port is provided on the other side. The lens protection port is protruding outward from the working chamber, one end of the gas concentration sensor reflector extends into the lens protection port, the gas concentration sensor output mirror is located in the first assembly port outside the working chamber, and part or all of the gas concentration sensor optical chamber is located in the working chamber.

[0006] As a further improvement, the detection pipeline is provided with a heat-insulating shell at least outside the working chamber.

[0007] As a further improvement, the shape of the heat-insulating shell is the same as or similar to that of the working chamber.

[0008] As a further improvement, a heat-insulating layer is provided between the heat-insulating shell and the working chamber.

[0009] As a further improvement, the thermal insulation layer is filled with thermal insulation material and / or a heating device.

[0010] As a further improvement, the first assembly port is provided with a heat dissipation component, and the sensor head of the gas concentration sensor is arranged on the outside of the heat dissipation component.

[0011] As a further improvement, the heat dissipation component includes a heat conducting plate matched with the first assembly opening, and a heat dissipation fin is disposed on the outer wall of the heat conducting plate.

[0012] As a further improvement, the first assembly opening is provided with a blind plate.

[0013] As a further improvement, the first assembly port is provided with a sealing sheet for sealing the gas concentration sensor; the first assembly port is provided with a clamp for locking the gas concentration sensor; and the first assembly port is provided with a mounting flange.

[0014] As a further improvement, the temperature sensor includes a first temperature sensor arranged at the air inlet and a second temperature sensor arranged at the air outlet.

[0015] As a further improvement, the air inlet is provided with an upper flange connected to the air inlet pipe, and the air outlet is provided with a lower flange connected to the air outlet pipe; the first temperature sensor is arranged in the upper flange, and the second temperature sensor is arranged in the lower flange.

[0016] As a further improvement, the gas concentration sensor is a hydrogen peroxide sensor based on TDLAS technology.

[0017] As a further improvement, a water concentration sensor is also provided in the detection pipe, and a second assembly port for installing the water concentration sensor is provided on one side of the detection pipe. The second assembly port and the first assembly port are arranged at 90° on the outer circumference of the detection pipe, and the water concentration sensor and the gas concentration sensor are arranged in the detection pipe in an upper and lower staggered manner; one end of the water concentration sensor is located in the second assembly port, and an installation port for installing the other end of the water concentration sensor is provided in the detection pipe at the other end of the water concentration sensor.

[0018] Compared with the prior art, the present invention has the following beneficial effects: a first assembly port for installing a gas concentration sensor is provided on one side of the detection pipeline, a lens protection port is provided on the other side, and the lens protection port is protruded outward from the working chamber, one end of the reflector of the gas concentration sensor extends into the lens protection port, the exit mirror of the gas concentration sensor is located in the first assembly port outside the working chamber, and part or all of the optical chamber of the gas concentration sensor is located in the working chamber. Under the premise of not destroying the original sterilization process, the reflective lens and the exit lens of the gas concentration sensor are respectively hidden in the lens protection port and the first assembly port and are not directly exposed to the flow channel of the detection pipeline, so that they will not be directly impacted by the detection gas flowing in, impurities in the gas will not remain on the lens, and will not condense and remain on the lens after returning to normal temperature after use, thereby greatly reducing the maintenance frequency of the lens and the maintenance frequency of the sensor. Since the lens protection port and the first assembly port protrude independently from the flow channel formed by the working chamber for detecting the gas, the parts of the lenses at both ends that do not participate in the actual optical path detection can be hidden, thereby meeting the adaptability problem of different optical path sensors with different diameters of gas delivery pipelines in beverage filling equipment.

[0019] The tooling of the present invention is applied to gas concentration detection, and is particularly applicable to the detection of hydrogen peroxide gas concentration. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the gas concentration pipeline detection tooling of the present invention.

[0021] Figure 2 It is a schematic diagram of the decomposition of the gas concentration pipeline detection tooling of the present invention when the gas concentration sensor is removed for non-gas concentration detection.

[0022] Figure 3 It is a schematic diagram of the exploded view of the gas concentration pipeline detection tooling of the present invention.

[0023] Figure 4 It is a schematic diagram of the gas concentration pipeline detection tooling of the present invention used for gas concentration detection.

[0024] Figure 5 It is a structural schematic diagram of the detection pipeline of the present invention.

[0025] Figure 6-7 It is a schematic diagram of different section positions of a gas concentration pipeline detection tooling installed with a water concentration sensor in the present invention. DETAILED DESCRIPTION

[0026] See also Figure 1-7 In this embodiment, a gas concentration pipeline detection tool is provided, including a detection pipeline, a working chamber 3 arranged in the detection pipeline, and a temperature sensor for detecting gas temperature. The detection pipeline is located in the working chamber 3 and is provided with an air inlet connected to the air inlet pipeline 15 at one end and an air outlet connected to the air outlet pipeline 16 at the other end. A gas concentration sensor 21 is provided in the detection pipeline. One side of the detection pipeline is provided with a first assembly port 18 for installing the gas concentration sensor 21, and the other side is provided with a lens protection port 17. The lens protection port 17 protrudes outward from the working chamber 3. One end of the reflector of the gas concentration sensor 21 extends into the lens protection port 17. The exit mirror of the gas concentration sensor 21 is located in the first assembly port outside the working chamber 3. Part or all of the optical chamber 9 of the gas concentration sensor 21 is located in the working chamber 3. The optical chamber partially or completely located in the working chamber 3 is used for the normal passage of the optical path detection. This not only meets the working needs of the gas concentration sensor 21, but also hides the reflective lens in the lens protection port 17 and the exit lens in the first assembly port 18. The parts of the lenses at both ends that are not involved in the actual optical path detection are not directly exposed to the gas flow path, so they will not be directly impacted by the gas (such as hydrogen peroxide gas) flowing in, and impurities in the gas will not remain on the lenses. After the sensor is restored to room temperature after use, it will not condense and remain on the lenses, thereby greatly reducing the maintenance frequency of the lenses and the maintenance frequency of the sensor. The gas concentration sensor 21 described in the present invention is a sensor based on TDLAS technology.

[0027] The first assembly port 18 is provided with a sealing sheet 13 for sealing the gas concentration sensor 21; the gas concentration sensor 21 can be sealed and connected to the first assembly port 18 through the sealing sheet 13. The first assembly port 18 is provided with a clamp 6 for locking the gas concentration sensor 21. The first assembly port 18 is provided with a mounting flange 14. The mounting flange 14 can be used to connect and install the gas concentration sensor 21 or the blind plate 12.

[0028] The size of the working chamber 3 can be designed to match the length of the gas concentration sensor 21, thereby meeting the adaptability of different optical path sensors to different diameters of gas delivery pipes in beverage filling equipment.

[0029] Preferably, the temperature sensor includes a first temperature sensor arranged at the air inlet, and a second temperature sensor 11 arranged at the air outlet. Usually, the detection pipeline is arranged at the top and the bottom. When in use, the air inlet is arranged at the top to connect the air inlet pipeline 15, and the air outlet is arranged at the bottom to connect the air outlet pipeline 16. In order to facilitate the connection, the air inlet is provided with an upper flange 4 connected to the air inlet pipeline 15, and the air outlet is provided with a lower flange 10 connected to the air outlet pipeline 16; the first temperature sensor 5 is arranged in the upper flange 4, and the second temperature sensor 11 is arranged in the lower flange 10. The upper and lower flanges can be arranged at the corresponding air ports by welding.

[0030] The detection pipeline is provided with a heat-insulating shell 1 at least outside the working chamber 3. The shape of the heat-insulating shell 1 is the same as or similar to that of the working chamber 3.

[0031] A certain gap is left between the insulation shells 1, and the gap between the insulation shells 1 and the working chamber 3 may be provided with an insulation layer 2. The insulation layer 2 is filled with insulation materials and / or heating devices.

[0032] By designing the first and second temperature sensors to realize temperature monitoring and combining the insulation and heating functions, a constant temperature working environment can be provided for the gas concentration sensor 21, thereby avoiding gas (hydrogen peroxide gas, etc.) condensation and causing sensor detection failure, thereby ensuring the accuracy of sensor detection.

[0033] The high-temperature detection gas enters the working chamber 3 through the air inlet pipe 15, and the insulation layer 2 insulates the detection gas in the working chamber 3 to prevent gas condensation. The first temperature sensor 5 detects the temperature of the gas before entering the working chamber 3, and the second temperature sensor 11 detects the temperature of the gas coming out of the working chamber 3. If the outgoing temperature is lower than the entering temperature and does not meet the actual temperature requirement, the insulation material of the insulation layer 2 can be adjusted accordingly or replaced with a heating device to meet the actual temperature requirement, so as to avoid the gas (hydrogen peroxide gas, etc.) condensing in the working chamber or on the sensor lens, thereby avoiding the concentration loss of the gas (hydrogen peroxide gas, etc.) and avoiding abnormal operation of the gas concentration sensor 21, and ultimately greatly reducing the frequency requirement of sensor maintenance.

[0034] The first assembly port 18 is provided with a heat dissipation component, and the sensor head 19 of the gas concentration sensor 21 is arranged outside the heat dissipation component. The heat dissipation component can directly dissipate the heat of the detection pipeline from the first assembly port, directly cut off the heat from being directed to the sensor head, and prevent the heat from entering the sensor, thereby preventing the sensor head components from being damaged by high temperature, maintaining the internal components of the sensor at a normal operating temperature, and greatly improving the service life of the sensor.

[0035] The heat dissipation assembly includes a heat conducting sheet 8 matched with the first assembly port 18, and the outer wall of the heat conducting sheet 8 is provided with a heat sink 7. Specifically, the outer wall of the heat conducting sheet 8 can be tightly surrounded by the heat sink 7, and the heat in the working chamber 3 first enters the heat conducting sheet 8 through direct contact heat conduction, and the heat conducting sheet 8 then conducts the heat into the heat sink 7, and the heat sink 7 dissipates the heat into the air through the surrounding heat conducting surfaces, thereby greatly reducing and preventing the heat from continuing to be conducted to the inside of the sensor through the heat conducting sheet 8, and realizing that the gas concentration sensor 21 is always at a normal working temperature after thermal equilibrium, and greatly improving the service life of the sensor.

[0036] The first assembly port 18 is provided with a blind plate 12; the blind plate 12 preferably adopts a quick-install blind plate, which can be quickly assembled and disassembled with the installation pipeline. The blind plate 12 is provided to facilitate timely sealing of the first assembly port when the sensor is disassembled, so as to quickly restore the pipeline working environment and avoid leakage of detection gas in the equipment or shutdown of the equipment due to a gap. Thus, the detection pipeline tooling can be used as a gas delivery pipeline.

[0037] The gas concentration sensor 21 of the present invention can be completely replaced by a hydrogen peroxide sensor. Therefore, as a preferred embodiment, the gas concentration sensor 21 is a hydrogen peroxide sensor based on TDLAS technology.

[0038] As a further preferred embodiment of this embodiment, the tooling chamber 3 is usually provided with a water concentration sensor 20 in the detection pipe in order to test the decomposition rate of liquid hydrogen peroxide to produce gaseous hydrogen peroxide. The water concentration sensor 20 is used to detect the water concentration in the working chamber 3. A second assembly port 23 for installing the water concentration sensor 20 is provided on one side of the detection pipe. The second assembly port 23 and the first assembly port 18 are arranged at 90° on the outer periphery of the detection pipe. The water concentration sensor 20 and the gas concentration sensor 21 are arranged in an up-and-down staggered manner in the detection pipe, and the water concentration sensor 20 and the gas concentration sensor 21 are arranged in a height difference distribution up and down. The corresponding first and second assembly ports are also staggered up and down to form a height difference distribution. So that the tooling chamber 3 can simultaneously install a water concentration sensor and a hydrogen peroxide concentration sensor at a smaller height. One end of the water concentration sensor 20 is located in the second assembly port 23, and the other end of the water concentration sensor 20 in the detection pipe is provided with an installation port 22 for installing the other end of the water concentration sensor 20.

[0039] Since hydrogen peroxide decomposes to produce water and oxygen, the gas concentration sensor 21, i.e., the hydrogen peroxide sensor, can detect the concentration of hydrogen peroxide after the loss of the detection pipeline. The water concentration sensor 20 can detect the total concentration of water in the detection pipeline and water produced by the decomposition of hydrogen peroxide. The water concentration in the detection pipeline is composed of the solution that produces gaseous hydrogen peroxide and the water concentration in the air. The water concentration in the air can be obtained by calculating the water content ratio of the hydrogen peroxide solution and monitoring the air temperature and humidity. At this time, the water concentration detected by the water concentration sensor 20 is subtracted from the water concentration in the air in the detection pipeline to obtain the water concentration produced by the decomposition of hydrogen peroxide. At this time, the concentration of decomposed hydrogen peroxide can be inferred from the chemical equation for the decomposition of hydrogen peroxide. The decomposition rate is obtained by dividing the decomposed hydrogen peroxide by the sum of the concentration detected by the hydrogen peroxide sensor and the decomposed hydrogen peroxide concentration. The decomposition rate can reflect the actual sterilization utilization rate of hydrogen peroxide, which is of great significance to pipeline sterilization.

[0040] The gas concentration sensor is a sensor based on TDLAS technology. A first temperature sensor is provided at the air inlet of the detection pipeline and a second temperature sensor is provided at the air outlet, so that the detection tooling can monitor the temperature of the air inlet and outlet pipelines in real time, detect low temperature points in time, and avoid the occurrence of low temperature condensation points through feedback processing. It avoids the condensation of gas (such as hydrogen peroxide gas, etc.) or other impurities adhering to the optical lens to block the light path and the concentration loss caused by the condensation of gas (such as hydrogen peroxide gas, etc.) on the tooling and sensor structure, so as to achieve maintenance-free continuous use of the sensor.

Claims

1. A gas concentration pipeline detection tool, comprising a detection pipeline, a working chamber arranged in the detection pipeline, and a temperature sensor for detecting the gas temperature, wherein the detection pipeline is located in the working chamber and has an air inlet connected to the air inlet pipeline at one end and an air outlet connected to the air outlet pipeline at the other end, characterized in that: A gas concentration sensor is provided in the detection pipeline, a first assembly port for installing the gas concentration sensor is provided on one side of the detection pipeline, and a lens protection port is provided on the other side. The lens protection port protrudes outward from the working chamber, and one end of the reflector of the gas concentration sensor extends into the lens protection port. The exit mirror of the gas concentration sensor is located in the first assembly port outside the working chamber, and part or all of the optical chamber of the gas concentration sensor is located in the working chamber.

2. The gas concentration pipeline detection tool as claimed in claim 1, characterized in that: The detection pipeline is provided with a heat-insulating shell at least outside the working chamber.

3. The gas concentration pipeline detection tool as claimed in claim 2, characterized in that: The shape of the heat-insulating shell is the same as or similar to that of the working chamber.

4. The gas concentration pipeline detection tool as claimed in claim 2 or 3, characterized in that: A heat-insulating layer is arranged between the heat-insulating shell and the working chamber.

5. The gas concentration pipeline detection tool as claimed in claim 4, characterized in that: The thermal insulation layer is filled with thermal insulation material and / or a heating device.

6. The gas concentration pipeline detection tool as claimed in claim 1, characterized in that: The first assembly port is provided with a heat dissipation component, and the sensor head of the gas concentration sensor is arranged on the outside of the heat dissipation component.

7. The gas concentration pipeline detection tool as claimed in claim 6, characterized in that: The heat dissipation component comprises a heat conducting plate matched with the first assembly opening, and a heat dissipation plate is arranged on the outer wall of the heat conducting plate.

8. The gas concentration pipeline detection tool as claimed in claim 1, characterized in that: The temperature sensor includes a first temperature sensor arranged at the air inlet and a second temperature sensor arranged at the air outlet.

9. The gas concentration pipeline detection tool as claimed in claim 1 or 8, characterized in that: The first assembly port is provided with a blind plate; the air inlet is provided with an upper flange connected to the air inlet pipe, and the air outlet is provided with a lower flange connected to the air outlet pipe; the first temperature sensor provided by the temperature sensor is provided in the upper flange, and the second temperature sensor provided by the temperature sensor is provided in the lower flange.

10. The gas concentration pipeline detection tool as claimed in claim 1, characterized in that: The first assembly port is provided with a sealing sheet for sealing the gas concentration sensor; the first assembly port is provided with a clamp for locking the gas concentration sensor; and the first assembly port is provided with a mounting flange.

11. The gas concentration pipeline detection tool as claimed in claim 1, characterized in that: The gas concentration sensor is a hydrogen peroxide sensor based on TDLAS technology.

12. The gas concentration pipeline detection tool as claimed in claim 1, characterized in that: A water concentration sensor is also provided in the detection pipe, and a second assembly port for installing the water concentration sensor is provided on one side of the detection pipe. The second assembly port and the first assembly port are arranged at 90° on the outer circumference of the detection pipe, and the water concentration sensor and the gas concentration sensor are arranged in the detection pipe in an alternating manner up and down; one end of the water concentration sensor is located in the second assembly port, and an installation port for installing the other end of the water concentration sensor is provided in the detection pipe at the other end of the water concentration sensor.

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