Gas concentration detection sensor and gas concentration detection equipment

Abstract

The utility model discloses a gas concentration detection sensor and gas concentration detection equipment, and the gas concentration detection sensor comprises a shell which is a hollow assembly and is internally provided with a silver needle; the liquid storage assembly is arranged in the shell, and a reagent used for infiltrating the silver needle is stored in the liquid storage assembly; the capillary tube is arranged in the shell, one end of the capillary tube is communicated with the liquid storage assembly, and the port size of the other end of the capillary tube is the same as the diameter of the silver needle and used for installing the silver needle. According to the gas concentration detection sensor and the gas concentration detection equipment provided by the invention, the reagent in the liquid storage assembly is drained to the silver needle through the capillary tube, so that the direct contact area between the reagent and air is reduced, the volatilization rate of the reagent is reduced, and the concentration of the reagent is maintained in a relatively stable range; therefore, the manual calibration workload can be reduced and the accuracy of the detection result is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to sensor structure technical field, more specifically, relate to a gas concentration detection subassembly. BACKGROUND

[0002] The existing silver wire is arranged in the sensor, and the silver wire is contacted with the wet tissue when the gas concentration is detected. During use, the reagent has strong volatility, and the detection effect of the sensor will be poor with the change of the concentration of the reagent. In order to avoid the large error of the detection result, manual calibration is needed, and the calibration period is 7 days once. For the staff, the number of sensors that need to be calibrated is too large, which leads to the great workload of manual calibration, and manual calibration cannot guarantee the accuracy of the detection result.

[0003] Therefore, how to reduce the calibration workload and ensure the accuracy of the detection result is a problem to be solved by the technical personnel in the field. TECHNICAL PROBLEM

[0004] Therefore, the utility model aims at providing a gas concentration detection sensor, which can reduce the contact area of the reagent with air, reduce the volatilization rate of the reagent, reduce the workload of manual calibration and ensure the accuracy of the detection result.

[0005] Another object of the utility model is to provide a gas concentration detection device comprising the above-mentioned gas concentration detection sensor.

[0006] In order to achieve the above object, the utility model provides the following technical scheme.

[0007] A gas concentration detection sensor comprises:

[0008] A shell is a hollow component, and a silver needle is arranged in the shell;

[0009] A liquid storage component is arranged in the shell, and the liquid storage component stores a reagent for soaking the silver needle;

[0010] A capillary tube is arranged in the shell, one end of the capillary tube is communicated with the liquid storage component, and the other end of the capillary tube has the same diameter as the silver needle and is used for mounting the silver needle.

[0011] Preferably, the middle part of the capillary tube is provided with at least two middle lead ports, the silver needle is provided with a plurality of middle lead ports, and the middle lead ports are used for supplying the reagent to the silver needle.

[0012] Preferably, a liquid guiding pipe is arranged between the middle lead port and the silver needle, and the liquid guiding pipe is fixedly connected with the capillary tube.

[0013] Preferably, a joint is arranged between the liquid storage assembly and the capillary tube, the joint is fixedly connected with the capillary tube, the lower end of the liquid storage assembly is provided with a liquid outlet, and a threaded pipe is arranged at the liquid outlet and is in threaded connection with the joint.

[0014] Preferably, a sealing assembly is arranged between the joint and the threaded pipe.

[0015] Preferably, a positioning assembly for positioning the liquid storage assembly is arranged in the shell, so that the liquid storage assembly is detachably arranged in the shell.

[0016] Preferably, a liquid level meter is arranged in the liquid storage assembly, the liquid level meter is used for detecting the residual amount of reagent in the liquid storage assembly, and a display screen is arranged on the periphery of the shell, the display screen is electrically connected with the liquid level meter and is used for displaying the detection result of the liquid level meter.

[0017] Preferably, an air pressure balancing assembly is further arranged on the shell, and the air pressure balancing assembly is used for balancing the air pressure inside and outside the shell.

[0018] Preferably, a corrosion-resistant layer is arranged on the inner wall of the liquid storage assembly and the capillary tube.

[0019] A gas concentration detection device includes a gas concentration detection sensor, and the gas concentration detection sensor is the gas concentration detection sensor of any one of the above.

[0020] The gas concentration detection sensor provided by the utility model has the advantages that the shell is a hollow assembly, the silver needle and the liquid storage assembly are arranged in the shell, the reagent in the liquid storage assembly flows through the capillary tube and contacts the silver needle, the port sizes of the ends of the capillary tube and the silver needle are the same, the reagent can be prevented from leaking from the capillary tube, the contact area of the reagent and the external air can be greatly reduced on the premise that the reagent contacts the silver needle, the volatilization rate of the reagent is reduced, the workload of manual calibration can be reduced, the concentration of the reagent in the liquid storage assembly is maintained in a relatively stable range due to the fact that the volatilization amount of the reagent is greatly reduced, and the accuracy of the detection result can be ensured. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description, obviously, the drawings in the following description are only part of the embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of the provided drawings.

[0022] Figure 1 A structure diagram of a gas concentration detection sensor provided by the present application is shown in the figure.

[0023] Figure 2 A Figure 1 A local enlarged view of the A part in the figure.

[0024] Reference signs:

[0025] 1 - shell; 2 - silver needle; 3 - liquid storage assembly; 4 - capillary; 5 - liquid guide pipe; 6 - joint. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be described clearly and completely in the following with reference to the drawings in the embodiments of the present application, obviously, the described embodiments are only part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0027] The core of the present application is to provide a gas concentration detection sensor, which can guide the reagent in the liquid storage assembly to the silver needle through the capillary, reduce the contact area of the reagent with air, reduce the volatilization rate of the reagent, and thus reduce the artificial calibration workload and ensure the accuracy of the detection result.

[0028] Another core of the present application is to provide a gas concentration detection device comprising the above gas concentration detection sensor.

[0029] It should be noted that the directions or position relationships indicated by "up", "down", "front", "back" and the like are based on the directions or position relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and thus cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus cannot be understood as limiting the present application.

[0030] The gas concentration detection sensor provided by the present application comprises: a shell 1, a liquid storage assembly 3 and a capillary 4.

[0031] The shell 1 is a hollow assembly, and the shell 1 is internally provided with a silver needle 2.

[0032] The liquid storage assembly 3 is arranged in the interior of the shell 1, and the liquid storage assembly 3 is internally stored with reagents for wetting the silver needle 2;

[0033] The capillary tube 4 is arranged in the shell 1, one end of the capillary tube 4 is communicated with the liquid storage assembly 3, and the other end of the capillary tube 4 has a port size same as the diameter of the silver needle 2 and is used for mounting the silver needle 2.

[0034] Specifically, please refer to the accompanying drawings Figure 1 The shell 1 is a hollow structure, including but not limited to a cylindrical shell, a cuboid shell, the lower part of the shell 1 is provided with the silver needle 2, the middle and upper part is provided with the liquid storage assembly 3, the liquid storage assembly 3 is internally stored with sufficient reagents, and the lower end of the liquid storage assembly 3 is provided with a liquid outlet, and the entire liquid storage assembly 3 is provided with one liquid outlet, the reagents cannot leave the liquid storage assembly 3 from the remaining positions, the liquid outlet is provided with the butt joint capillary tube 4, the other end of the capillary tube 4 is butt jointed with the silver needle 2, and the port inner diameter of the one end of the capillary tube 4 butt jointed with the silver needle 2 is same as or slightly larger than the diameter of the silver needle 2, and the specific structural relationship can be referred to the accompanying drawings Figure 2 Under normal conditions, the reagents in the liquid storage assembly 3 flow downward along the capillary tube 4 until contacting the silver needle 2 due to the gravity, the flow amount of the reagents is very small due to the small diameter of the capillary tube 4, and the contact area of the reagents with the air outside the capillary tube 4 is greatly reduced due to the size limitation of the capillary tube 4, and the reagents cannot leak, in this way, the volatilization degree of the reagents is greatly reduced compared with the prior art, the concentration of the reagents in the liquid storage assembly 3 can be maintained at a relatively stable level, so that the detection result is more accurate, and since the reagent content can be maintained at a sufficient level for gas detection, manual calibration is no longer needed, thereby reducing the workload of the manual work.

[0035] On the basis of the above embodiment, the middle part of the capillary tube 4 is provided with at least two middle lead ports, the silver needle 2 is provided with a plurality of middle lead ports, and the middle lead ports are used for supplying the reagents to the silver needle 2.

[0036] Specifically, since a plurality of silver needles 2 need to be arranged in the shell 1, the number of the middle lead ports on the capillary tube 4 is one less than the number of the silver needles 2, and the plurality of middle lead ports need to be uniformly arranged along the extension direction of the capillary tube 4, so that the reagents in the capillary tube 4 can be respectively guided to other silver needles 2 for detecting the gas concentration.

[0037] On the basis of the above embodiment, the middle lead port and the silver needle 2 are provided with a liquid guide pipe 5, and the liquid guide pipe 5 is fixedly connected with the capillary tube 4.

[0038] Specifically, since the positions of the silver needles 2 are fixedly arranged at the lower end of the shell 1 and the positions of the silver needles 2 are generally not changed, an liquid guiding pipe 5 needs to be additionally arranged to guide the reagent in the capillary tube 4 to the silver needles 2, and it needs to be noted that the liquid guiding pipe 5 can also be made of a capillary tube, and the liquid guiding pipe 5 and the capillary tube 4 are preferably fixedly connected to ensure the structural strength.

[0039] Optionally, the capillary tube 4 and the liquid guiding pipe 5 can be an integrated assembly, which is convenient for batch production.

[0040] In some embodiments, a joint 6 is arranged between the liquid storage assembly 3 and the capillary tube 4, the joint 6 is fixedly connected with the capillary tube 4, the lower end of the liquid storage assembly 3 is provided with a liquid outlet, and a threaded pipe is arranged at the liquid outlet and is threadedly connected with the joint 6.

[0041] Specifically, the capillary tube 4 is fixedly connected with the joint 6, and the threaded pipe is arranged at the liquid outlet of the liquid storage assembly 3. In a normal state, a threaded cover is arranged at the threaded pipe to realize the airtight storage of the liquid storage assembly 3 and prevent the reagent from volatilizing. When the sensor is used, the threaded cover of the liquid storage assembly 3 is disassembled and is installed with the joint 6 through the threaded connection, which is convenient for installation.

[0042] On the basis of the above-mentioned embodiments, a sealing assembly is arranged between the joint 6 and the threaded pipe.

[0043] Specifically, when the liquid storage assembly 3 is communicated with the capillary tube 4, the sealing assembly is arranged between the joint 6 and the threaded pipe to prevent the reagent from volatilizing or leaking from the gap.

[0044] Optionally, the sealing assembly can be a rubber ring or an iron ring, and materials that do not react with the reagent and have good sealing performance can be used to prepare the sealing assembly.

[0045] In some embodiments, a positioning assembly for positioning the liquid storage assembly 3 is arranged in the shell 1, so that the liquid storage assembly 3 is detachably arranged in the shell 1.

[0046] Specifically, structures such as clamping protrusions are arranged in the shell 1 to effectively realize the positioning of the liquid storage assembly 3. It needs to be ensured that the liquid storage assembly 3 is stably arranged above the silver needles 2 in the shell 1 to ensure that the reagent can be guided to contact the silver needles 2 under the action of gravity.

[0047] In some embodiments, a liquid level meter is arranged in the liquid storage assembly 3, the liquid level meter is used to detect the remaining amount of the reagent in the liquid storage assembly 3, a display screen is arranged on the outer periphery of the shell 1, the display screen is electrically connected with the liquid level meter and is used to display the detection result of the liquid level meter.

[0048] Specifically, a liquid level gauge is arranged in the liquid storage assembly 3, and the liquid level gauge is used in cooperation with the display screen to realize real-time viewing of the reagent residual amount in the sensor, so as to determine whether the sensor is normally working. Generally, a plurality of gas concentration detection sensors are placed when gas detection is performed, and whether the sensors are normally working can be directly compared through the display screen. When the liquid level of a certain sensor is extremely low, it is necessary to consider whether there is a liquid leakage problem.

[0049] In some embodiments, the shell 1 is further provided with an air pressure balancing assembly, which is used to balance the air pressure inside and outside the shell 1.

[0050] Specifically, byproducts are generated in the shell 1 during a detection reaction, and if there is gas in the byproducts, the air pressure in the shell 1 will gradually increase. The liquid storage assembly 3 is not provided with a component for increasing the internal gas, so when the air pressure in the shell 1 reaches a certain degree, the liquid in the liquid storage assembly 3 cannot continue to flow to the silver needle 2. Therefore, the air pressure balancing assembly needs to be provided to avoid excessive air pressure in the shell 1.

[0051] On the basis of the above-mentioned embodiments, the inner walls of the liquid storage assembly 3 and the capillary tube 4 are both provided with a corrosion-resistant layer.

[0052] Specifically, to prevent the liquid storage assembly 3 and the capillary tube 4 from being corroded by the reagent, a corrosion-resistant coating should be arranged on the inner surfaces thereof in contact with the reagent, so as to improve the corrosion resistance of the assembly and prolong the service life.

[0053] In addition to the above-mentioned gas concentration detection sensor, the utility model also provides a gas concentration detection device comprising the gas concentration detection sensor disclosed in the above-mentioned embodiments. The structures of other parts of the gas concentration detection device refer to the prior art, and will not be described herein.

[0054] The embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts of each embodiment can be referred to each other.

[0055] The above provides a detailed introduction to the gas concentration detection sensor and the gas concentration detection device. The principle and implementation mode of the utility model are described by applying specific examples. The above embodiment is only used to help understand the method and core idea of the utility model. It should be pointed out that the ordinary skilled in the art can make some improvements and modifications to the utility model without departing from the principle of the utility model. These improvements and modifications also fall within the protection scope of the claims of the utility model.

Claims

1. A gas concentration detection sensor characterized by comprising: include: The housing (1) is a hollow component, and the interior of the housing (1) is provided with silver needles (2). A liquid storage component (3) is disposed inside the housing (1), and the liquid storage component (3) contains a reagent for wetting the silver needle (2); A capillary tube (4) is disposed inside the housing (1). One end of the capillary tube (4) is connected to the liquid storage assembly (3). The port size of the other end of the capillary tube (4) is the same as the diameter of the silver needle (2) and is used to install the silver needle (2).

2. The gas concentration detection sensor according to claim 1, characterized by, The capillary tube (4) is provided with at least two central lead ports in the middle, and the silver needle (2) is provided with multiple central lead ports for supplying the reagent to the silver needle (2).

3. The gas concentration detection sensor according to claim 2, characterized by A liquid guide tube (5) is provided between the central lead-in port and the silver needle (2), and the liquid guide tube (5) is fixedly connected to the capillary tube (4).

4. The gas concentration detection sensor according to claim 1, characterized by A connector (6) is provided between the liquid storage component (3) and the capillary tube (4). The connector (6) is fixedly connected to the capillary tube (4). The lower end of the liquid storage component (3) is provided with a liquid outlet. A threaded tube is provided at the liquid outlet. The threaded tube and the connector (6) are connected by a thread.

5. The gas concentration detection sensor according to claim 4, characterized by A sealing assembly is provided between the connector (6) and the threaded pipe.

6. The gas concentration detection sensor according to claim 1, wherein The housing (1) is provided with a positioning component for positioning the liquid storage component (3) so that the liquid storage component (3) can be detachably disposed inside the housing (1).

7. The gas concentration detection sensor according to claim 1, wherein The liquid storage component (3) is equipped with a liquid level gauge, which is used to detect the remaining amount of reagent in the liquid storage component (3). The outer periphery of the housing (1) is provided with a display screen, which is electrically connected to the liquid level gauge and is used to display the detection result of the liquid level gauge.

8. The gas concentration detection sensor according to claim 1, wherein The housing (1) is also provided with a pressure balancing component, which is used to balance the pressure inside and outside the housing (1).

9. The gas concentration detection sensor according to any one of claims 1 to 8, characterized by, The inner walls of both the liquid storage component (3) and the capillary tube (4) are provided with anti-corrosion layers.

10. A gas concentration detection device comprising a gas concentration detection sensor, characterized by The gas concentration detection sensor is the gas concentration detection sensor as described in any one of claims 1 to 9.

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