Automatic calibration table for gas sensitive sensor equipment

Abstract

The utility model relates to the technical field of calibration tables, in particular to an automatic calibration table for gas sensitive sensor equipment. According to the technical scheme, the gas guide assembly comprises calibration box sets, reference sensors, gas pipes and a whipping and beating dual-purpose gas pump, the reference sensors are fixedly installed on the inner walls of the calibration box sets, the gas pipes are fixedly installed on the outer walls of the calibration box sets, one calibration box set comprises two calibration boxes, and the gas pipes are fixedly installed on the inner walls of the calibration box sets; and the two calibration boxes in one group are communicated with the same pumping and beating dual-purpose air pump through air pipes. According to the utility model, after the gas sensitive sensor in one calibration box is calibrated, the gas in the calibration box is conveyed into the other calibration box by pumping the dual-purpose gas pump, and the gas is filled into the other calibration box to calibrate the gas sensitive sensor in the calibration box according to the time of taking out the calibrated gas sensitive sensor; the inflation time and the deflation time are overlapped, so that the time is saved, and the calibration efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of calibration tables, and particularly relates to an automatic calibration table for gas sensor devices. Background Art

[0002] A gas sensor calibration table is a device used to calibrate gas sensors. Its main function is to provide a stable and accurate measurement environment for gas sensors so as to evaluate and calibrate the performance of gas sensors. By comparing the gas sensor with a standard source and collecting the data output by the sensor, performance indicators such as the sensitivity, linearity, and repeatability of the gas sensor can be calculated, and the sensor can be corrected and calibrated to improve its measurement accuracy and reliability.

[0003] In the prior art, a plurality of calibration slots are provided on a gas sensor calibration table. A gas sensor is placed in each calibration slot. The supply of different standard gases is controlled through a dedicated gas path and a multi-way valve, and in cooperation with circuit control, full-automatic or semi-automatic calibration of the gas calibrator is achieved. Gases are filled into multiple calibration slots at the same time to calibrate multiple gas sensors, improving the calibration efficiency.

[0004] However, after the gas sensor calibration table calibrates the gas sensor, the gas needs to be recovered, the calibration slot needs to be opened to replace the gas sensor, and waiting for the gas extraction to be completed and replacing the gas sensor reduces the calibration efficiency. Summary of the Utility Model

[0005] The purpose of the utility model is to address the problem in the background art that the calibration efficiency is reduced because the gas needs to be extracted and the gas sensor needs to be replaced after the gas sensor is calibrated, and to provide an automatic calibration table for gas sensor devices.

[0006] The technical solution of the utility model: An automatic calibration table for gas sensor devices, comprising:

[0007] A table body, a control knob is rotatably connected to the outer wall of the table body, and an instrument is fixedly installed on the side of the table body;

[0008] A gas guiding assembly, including a calibration box group, a reference sensor, an air pipe, and a pumping and sucking dual-purpose air pump. The reference sensor is fixedly installed on the inner wall of the calibration box group, the air pipe is fixedly installed on the outer wall of the calibration box group. The calibration box group is provided with multiple groups. One group of calibration box groups includes two calibration boxes. The two calibration boxes in one group are connected to the same pumping and sucking dual-purpose air pump through the air pipe, and the reference sensor is electrically connected to the pumping and sucking dual-purpose air pump;

[0009] The calibration box group is provided on the outer wall of the table body, and a sealing assembly is provided at the top of the calibration box group.

[0010] Optionally, multiple groups of the calibration box groups are linearly and equidistantly distributed on the outer wall of the table body. A guiding frame is fixedly installed on the outer wall of the table body at the position of the calibration box group. The guiding frame adopts a square structure, and two calibration boxes in one group are located at the center of the guiding frame.

[0011] Optionally, a calibration seat is fixedly installed inside the calibration box group, and a gas sensor is inserted into the calibration seat.

[0012] Optionally, the sealing assembly includes a sealing cover, a positioning frame, and a filling airbag. The positioning frame is fixedly installed on the inner wall of the sealing cover, the sealing cover is erected on the top of the positioning frame, and the filling airbag is communicated with a trachea.

[0013] Optionally, two symmetrically arranged slots are opened on the side of the sealing cover. A limiting plate is fixedly installed on the inner wall of the sealing cover. An insertion plate is slidably connected between the positioning frame and the limiting plate. A telescopic airbag is elastically connected between the insertion plate and the filling airbag, and the insertion plate is inserted into the slot.

[0014] Optionally, initially, there is no gas in the filling airbag, and the filling airbag is in a contracted state and retracted into the sealing cover. When there is gas in the filling airbag, the filling airbag is in an inflated state, and the filling airbag covers the gap between the calibration box and the sealing cover.

[0015] Optionally, an inlet pipe and an outlet pipe are fixedly installed on the outer wall of the calibration box group, and the inlet pipe and the outlet pipe are respectively communicated with two calibration boxes in the calibration box group.

[0016] Compared with the prior art, the utility model has the following beneficial technical effects:

[0017] After the gas sensor in one calibration box is calibrated, the gas in this calibration box is transported to another calibration box by a pumping and sucking dual-purpose air pump. Subsequently, the gas sensor to be calibrated is replaced. Utilizing the time to take out the calibrated gas sensor, the gas in another calibration box is filled to calibrate the gas sensor in this calibration box. When deflating one calibration box, the other calibration box is inflated, overlapping the inflation time and the deflation time, saving time and improving the calibration efficiency.

[0018] Furthermore, during the process of filling gas into the calibration box, the gas fills the filling airbag and the nozzle of the telescopic airbag. The telescopic airbag expands to insert the insertion plate into the slot, fixing the position of the sealing cover, preventing the gas in the calibration box from lifting the sealing cover and also preventing the sealing cover from being accidentally opened. And the filling airbag expands to fill the gap between the calibration box and the sealing cover, improving the sealing effect and preventing the gas inside the calibration box from leaking, which affects the calibration of the gas sensor. Description of the Drawings

[0019] Figure 1 Provide a schematic diagram of the overall structure of an embodiment of the present utility model;

[0020] Figure 2 It is a schematic diagram of the separated state of the seal cover structure;

[0021] Figure 3 It is a schematic cross-sectional view of the calibration box group structure;

[0022] Figure 4 It is Figure 3 An enlarged schematic diagram of the plug board structure of part A of

[0023] Reference numerals: 1, table body; 2, control knob; 3, instrument; 4, air guiding assembly; 41, calibration box group; 42, calibration seat; 43, reference sensor; 44, air pipe; 45, dual-purpose pumping and sucking air pump; 5, guiding frame; 6, sealing assembly; 61, seal cover; 62, slot; 63, positioning frame; 64, filling airbag; 65, telescopic airbag; 66, plug board; 67, limiting plate. Specific embodiments

[0024] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model.

[0025] Generally, the components of the embodiments of the present utility model described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the claimed present utility model, but merely represents the selected embodiments of the present utility model.

[0026] All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0027] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0028] It should be noted that the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0029] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected" and "coupled" shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model may be understood according to specific circumstances.

[0030] Embodiment 1

[0031] As Figure 1 shown, this embodiment provides an automatic calibration platform for a gas sensor device, which includes a platform body 1. A control knob 2 is rotatably connected to the outer wall of the platform body 1. An instrument 3 is fixedly installed on the side of the platform body 1. The control knob 2 adjusts the gas flow, and the instrument 3 observes the gas concentration.

[0032] As Figure 2 shown, a gas guiding assembly 4 is arranged on the outer wall of the platform body 1. The gas guiding assembly 4 includes a calibration box group 41, a reference sensor 43, an air pipe 44 and a pumping and sucking dual-purpose air pump 45. The reference sensor 43 is fixedly installed on the inner wall of the calibration box group 41. The air pipe 44 is fixedly installed on the outer wall of the calibration box group 41. Multiple groups of calibration box groups 41 are linearly and equidistantly distributed on the outer wall of the platform body 1. A guiding frame 5 is fixedly installed on the outer wall of the platform body 1 at the position of the calibration box group 41. The guiding frame 5 adopts a square structure. Two calibration boxes in one group are located at the center of the guiding frame 5. By means of the guiding frame 5, it is indicated that the two calibration boxes therein are a group, so as to avoid operation errors.

[0033] Furthermore, one group of calibration box groups 41 includes two calibration boxes. The two calibration boxes in one group are connected to the same pumping and sucking dual-purpose air pump 45 through the air pipe 44. The reference sensor 43 is electrically connected to the pumping and sucking dual-purpose air pump 45. The gas in the calibration box is calibrated by the reference sensor 43 to judge the gas concentration. When the gas concentration in the calibration box reaches the set value, the reference sensor 43 converts the electrical signal into a digital signal and transmits it to the controller, and the controller is used to start the pumping and sucking dual-purpose air pump 45 to extract gas;

[0034] As Figure 2 shown, a calibration seat 42 is fixedly installed inside the calibration box group 41, and a gas sensor is inserted inside the calibration seat 42. The gas sensor and the calibration table are connected together through the calibration seat 42 to calibrate the gas sensor.

[0035] At the same time, gas sensors are placed in two calibration boxes within a group. One of the gas sensors in the calibration box is calibrated. When the gas in this one calibration box reaches the set value, the calibration of the gas sensor inside it ends. The pumping and sucking dual-purpose air pump 45 operates to transport the gas in this calibration box to another calibration box. Subsequently, the gas sensor in this calibration box can be taken out and replaced with the gas sensor to be calibrated. At this time, the gas filling inside the other calibration box is completed, and the gas sensor is calibrated.

[0036] In this embodiment, after the gas sensor in one calibration box is calibrated, the gas in this calibration box is transported to another calibration box through the pumping and sucking dual-purpose air pump 45. Subsequently, the gas sensor in this calibration box can be taken out and replaced with the gas sensor to be calibrated. Utilizing the time when the calibrated gas sensor is taken out, the gas filling in the other calibration box is completed. When deflating one calibration box, the other calibration box is inflated, overlapping the inflation time with the deflation time, saving time and improving the calibration efficiency.

[0037] Embodiment 2

[0038] Based on Embodiment 1, this embodiment proposes an automatic calibration table for a gas sensor device. As Figure 2 and 3 shown, a sealing assembly 6 is provided at the top of the calibration box group 41. The sealing assembly 6 includes a sealing cover 61, a positioning frame 63, and a filling airbag 64. The inner wall of the sealing cover 61 is fixedly installed with the positioning frame 63. The sealing cover 61 is erected on the top of the positioning frame 63. The filling airbag 64 is communicated with the air pipe 44.

[0039] When no gas is introduced into the calibration box, that is, there is no gas in the air pipe 44, so that there is no gas in the filling airbag 64. At this time, the filling airbag 64 is in a contracted state and retracted into the sealing cover 61. When gas is introduced into the calibration box, so that the filling airbag 64 is filled with gas, the filling airbag 64 is in an inflated state, and the filling airbag 64 covers the gap between the calibration box and the sealing cover 61.

[0040] As Figure 4As shown in the figure, two symmetrically arranged slots 62 are provided on the side of the sealing cover 61. A limiting plate 67 is fixedly installed on the inner wall of the sealing cover 61. A plug plate 66 is slidably connected between the positioning frame 63 and the limiting plate 67. An expansion airbag 65 is elastically connected between the plug plate 66 and the filling airbag 64. The plug plate 66 is inserted into the slot 62. When the filling airbag 64 expands, the gas inside the filling airbag 64 is sent into the expansion airbag 65. The expansion airbag 65 expands to insert the plug plate 66 into the slot 62 to fix the position of the sealing cover 61.

[0041] In this embodiment, during the process of filling the calibration box with gas, the gas fills the filling airbag 64 and the expansion airbag 65 nozzle. The expansion airbag 65 expands to insert the plug plate 66 into the slot 62 to fix the position of the sealing cover 61, preventing the gas in the calibration box from lifting the sealing cover 61 and also preventing the sealing cover 61 from being accidentally opened. At the same time, the filling airbag 64 expands to fill the gap between the calibration box and the sealing cover 61, improving the sealing effect and preventing the gas inside the calibration box from leaking, which may affect the calibration of the gas sensor.

[0042] The above specific embodiments are only several alternative embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspirations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. An automatic calibration table for a gas sensor device, characterized in that, Including: A frustum (1), a control knob (2) is rotatably connected to the outer wall of the frustum (1), and an instrument (3) is fixedly installed on the side of the frustum (1); An air guiding assembly (4), including a calibration box group (41), a reference sensor (43), an air pipe (44), and a dual-purpose pumping and sucking air pump (45). The reference sensor (43) is fixedly installed on the inner wall of the calibration box group (41), the air pipe (44) is fixedly installed on the outer wall of the calibration box group (41). There are multiple groups of the calibration box group (41), and one group of the calibration box group (41) includes two calibration boxes. The two calibration boxes in one group are connected by the air pipe (44) to the same dual-purpose pumping and sucking air pump (45), and the reference sensor (43) is electrically connected to the dual-purpose pumping and sucking air pump (45); The calibration box group (41) is opened on the outer wall of the frustum (1), and a sealing assembly (6) is arranged on the top of the calibration box group (41).

2. The automatic calibration platform for a gas sensor device according to claim 1, characterized in that: Multiple groups of the calibration box group (41) are linearly and equidistantly distributed on the outer wall of the frustum (1). A guiding frame (5) is fixedly installed on the outer wall of the frustum (1) at the position of the calibration box group (41). The guiding frame (5) adopts a square frame structure, and the two calibration boxes in one group are located at the center of the guiding frame (5).

3. The automatic calibration platform for a gas sensor device according to claim 1, characterized in that: A calibration seat (42) is fixedly installed inside the calibration box group (41), and a gas sensor is inserted into the calibration seat (42).

4. An automatic calibration table for a gas sensor device according to claim 1, characterized in that: The sealing assembly (6) includes a sealing cover (61), a positioning frame (63), and a filling airbag (64). The positioning frame (63) is fixedly installed on the inner wall of the sealing cover (61), the sealing cover (61) is erected on the top of the positioning frame (63), and the filling airbag (64) is communicated with the air pipe (44).

5. The automatic calibration platform for a gas sensor device according to claim 4, characterized in that: Two symmetrically arranged slots (62) are opened on the side of the sealing cover (61). A limiting plate (67) is fixedly installed on the inner wall of the sealing cover (61). An insertion plate (66) is slidably connected between the positioning frame (63) and the limiting plate (67). An expansion airbag (65) is elastically connected between the insertion plate (66) and the filling airbag (64), and the insertion plate (66) is inserted into the slot (62).

6. The automatic calibration table for a gas sensor device according to claim 5, characterized in that: Initially, there is no gas in the filling airbag (64), and the filling airbag (64) is in a contracted state and is received inside the sealing cover (61); when there is gas in the filling airbag (64), the filling airbag (64) is in an expanded state, at the gap between the calibration box and the sealing cover (61).

7. An automatic calibration table for a gas sensor device according to claim 6, characterized in that: An inlet pipe and an outlet pipe are fixedly installed on the outer wall of the calibration box group (41), and the inlet pipe and the outlet pipe are respectively communicated with the two calibration boxes in the calibration box group (41).

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