CN219328469U - Sensor shell for detection - Google Patents

Sensor shell for detection Download PDF

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Publication number
CN219328469U
CN219328469U CN202223382307.1U CN202223382307U CN219328469U CN 219328469 U CN219328469 U CN 219328469U CN 202223382307 U CN202223382307 U CN 202223382307U CN 219328469 U CN219328469 U CN 219328469U
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sensor
shell
drainage holes
utility
bottom plate
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CN202223382307.1U
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Chinese (zh)
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丁瑜
陈锡福
郭小林
包献忠
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Wuxi Lamoton Technology Co ltd
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Wuxi Lamoton Technology Co ltd
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Abstract

The utility model relates to the field of instrument matching devices, and discloses a sensor shell for detection, which comprises a sensor shell fixedly arranged in a pipeline, wherein the sensor shell comprises a bottom plate, a fence frame, an end cover and a sensor PCB (printed circuit board), the side surface of the bottom plate is fixedly connected with the fence frame, a windward surface and an air outlet surface are arranged on the fence frame, a plurality of drainage holes are formed in the windward surface, a plurality of drainage holes are formed in the air outlet surface, the aperture of each drainage hole is smaller than that of each drainage hole, the number of each drainage hole is greater than that of each drainage hole, a wire harness perforation point is formed in the bottom plate, an end cover fixing point is fixedly arranged in the fence frame, a PCB fixing point is fixedly arranged in the fence frame, and a shell fixing point is fixedly arranged on the bottom plate. The utility model has the following advantages and effects: the sensor is beneficial to better passing of gas in the pipeline through the sensor shell, and reduces wind resistance caused by the shell in the pipeline.

Description

Sensor shell for detection
Technical Field
The utility model relates to the technical field of instrument matching devices, in particular to a sensor shell for detection.
Background
The sensor is a detecting device, which can sense the information to be measured and convert the sensed information into electric signals or other information output in the required form according to a certain rule so as to meet the requirements of information transmission, processing, storage, display, recording, control and the like. The method is a primary link for realizing automatic detection and automatic control.
In the process of the self-control of the laboratory environment, various sensors are used for monitoring and controlling various parameters of the laboratory environment, so that the laboratory environment control equipment is in a normal state or an optimal state. A complete sensor is typically composed of sensing elements, switching elements, conversion circuitry, auxiliary power supplies, and PCB fixtures.
Laboratory environment monitoring sensors are generally based on wind speed, wind pressure, pressure differential, temperature and humidity and gas sensors. The working principle of the gas sensor is generally that gas sampling, sample analysis, data amplification and signal conversion are finally transmitted to a control end through a wire harness, so that the actual value of the corresponding gas is obtained.
The sampling of gases is generally divided into active sampling and passive sampling. The active sampling is a power supply device, sampling is carried out by a sampling method, the collected sample has limitation, the passive sampling does not need to provide power, the use is more convenient, the passive sampling utilizes the molecular diffusion principle to sample pollutants, and the obtained data analysis result is more representative.
The passive sensor is installed in the air pipe, generally has only a single hole, and samples are collected by utilizing the gas molecular diffusion principle, so that the step of sampling is realized. In a relatively static space, the mode can measure relevant pollution data of gas in the air, but in an environment that air pipes rapidly flow, a single hole is unreasonable, and the pipeline has positive pressure air supply and negative pressure air draft, so that the accuracy can be influenced even though gas molecule diffusion still exists.
The sensor is installed in the pipe, and although the sensor is small in size, wind resistance is increased.
The sampling accuracy can be influenced by actively or by adopting a sensing element which is provided with a sampling port in a pipeline and then transmitting gas to a PCB. The sensing element of the gas on the PCB needs reaction time, if the time of the gas flow passing through the sensing element is too short, the measured data is discounted, so that the data and the actual polluted gas in unit time have deviation, and the control precision of the laboratory environment is influenced.
Therefore, it is necessary to design a sensor housing for detection to solve the above-described problems.
Disclosure of Invention
An object of the present utility model is to provide a sensor housing for detection to solve the above-mentioned problems.
The technical aim of the utility model is realized by the following technical scheme: the utility model provides a sensor shell for detection, includes the sensor shell of fixed mounting in the pipeline, and the sensor shell includes bottom plate, rail frame, end cover and sensor PCB, bottom plate side and rail frame fixed connection, windward side and air-out face on the rail frame, a plurality of drainage holes have been seted up on the windward side, a plurality of drainage holes have been seted up on the air-out face.
The utility model is further provided with: the aperture of the drainage holes is smaller than that of the drainage holes, and the number of the drainage holes is larger than that of the drainage holes.
The utility model is further provided with: and wire harness perforation points are formed in the bottom plate.
Through adopting above-mentioned technical scheme, be used for installing waterproof gram head, make things convenient for the business turn over and the fixed of signal pencil.
The utility model is further provided with: and an end cover fixing point is fixedly arranged in the fence frame.
Through adopting above-mentioned technical scheme, conveniently fix the end cover on the end cover fixed point through the screw.
The utility model is further provided with: and a PCB fixing point is fixedly arranged in the fence frame.
Through adopting above-mentioned technical scheme, conveniently connect fixedly through screw and sensor PCB.
The utility model is further provided with: and a shell fixing point is fixedly arranged on the bottom plate.
Through adopting above-mentioned technical scheme, conveniently pass through the screw fixation with the bottom plate on the casing in the pipeline.
The utility model is further provided with: the windward side faces the direction opposite to the direction of the air flow in the pipeline, and the air outlet side faces the direction same as the direction of the air flow in the pipeline.
The utility model is further provided with: the windward side and the air outlet side are arc structures.
The beneficial effects of the utility model are as follows:
1. according to the utility model, through the windward side, the air outlet side, the drainage hole and the drainage hole, air flow enters the sensor housing fence frame through the drainage hole on the windward side, and as the sectional area of the drainage hole on the windward side is larger than that of the drainage hole on the air outlet side, the air inflow is larger than the air displacement, so that the polluted gas and the sensor sensitive element can be collected and sensed for a long time, and stable molecular diffusion improves the sensor collection precision;
2. according to the utility model, through the windward side, the air outlet side, the drainage hole and the drainage hole, when the air in the closed space inside the sensor shell enters and exits to reach a saturated state, the air in the shell can be slowly guided into the shell according to a certain speed, so that the stability of the reaction of the air on the sensor sensitive element is not influenced, and meanwhile, on the windward side outside the sensor shell, the air in the pipeline can better pass through the sensor shell due to the slow replacement of the air in the shell, and the wind resistance of the shell in the pipeline is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a sensor housing for detection according to the present utility model.
Fig. 2 to 4 are schematic structural views of a connection portion between a bottom plate and a fence frame in a sensor housing for detection according to the present utility model.
Fig. 5 is a schematic view of a structure in which a sensor housing for detection is installed in a pipe according to the present utility model.
In the figure, 1, a bottom plate; 2. a fence frame; 3. an end cap; 4. a sensor PCB; 5. a windward side; 6. an air outlet surface; 7. drainage holes; 8. a drain hole; 9. an end cap fixing point; 10. a PCB fixing point; 11. a housing fixation point; 12. harness perforation points; 13. a pipeline.
Detailed Description
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model, and furthermore, the terms "first", "second", etc. are used for descriptive purposes only and should not be construed to indicate or imply relative importance or implying a number of the indicated technical features, whereby the features defining "first", "second", etc. may explicitly or implicitly include one or more of such features.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or by communication between two elements, the specific meaning of the terms in the present disclosure will be understood by those skilled in the art in view of the specific circumstances.
The technical scheme of the present utility model will be clearly and completely described in connection with specific embodiments. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.
Referring to fig. 1, 2, 3, 4 and 5, the utility model provides a sensor housing for detection, which comprises a sensor housing fixedly installed in a pipeline 13, wherein the sensor housing comprises a bottom plate 1, a fence frame 2, an end cover 3 and a sensor PCB4, the side surface of the bottom plate 1 is fixedly connected with the fence frame 2, a windward side 5 and an air outlet side 6 are arranged on the fence frame 2, a plurality of drainage holes 7 are formed in the windward side 5, and a plurality of drainage holes 8 are formed in the air outlet side 6.
Through the structure, as can be clearly understood by combining with fig. 5, the empty space of the shell fence frame 2 is reserved on the pipeline 13, the sensor shell is fixed on the pipeline 13 through the shell fixing point 11 on the shell bottom plate 1, the windward side 5 of the fence frame 2 faces the direction opposite to the air flow direction in the pipeline 13, the air flow is identical to the air flow direction in the air outlet side 6, the air flow passes through the windward side 5, the windage resistance coefficient of the sensor shell in the pipeline 13 is reduced due to the convex arc design, meanwhile, the air flow enters the inside of the sensor shell fence frame 2 through the drainage hole 7 on the windward side 5, and the sectional area of the drainage hole 7 of the windward side 5 is larger than that of the air outlet side 6, so that the air inflow is larger than the air displacement, on one hand, the polluted air and the sensor sensitive element can be collected and sensed for a long time, and stable molecular diffusion improves the collection precision of the sensor; on the other hand, after the gas in the airtight space inside the sensor housing enters and exits to reach a saturated state, the gas in the housing slowly guides new gas into the housing according to a certain speed, so that the stability of the reaction of the gas on the sensor sensitive element is not affected, and meanwhile, on the windward side outside the sensor housing, due to the slow replacement of the gas in the housing, the windward side 5 forms a virtual airtight state, so that the gas in the pipeline 13 can better pass through the sensor housing, and the wind resistance of the housing in the pipeline 13 is reduced.
Specifically, a wire harness perforation point 12 is formed on the bottom plate 1, an end cover fixing point 9 is fixedly arranged in the fence frame 2, a PCB fixing point 10 is fixedly arranged in the fence frame 2, and a shell fixing point 11 is fixedly arranged on the bottom plate 1.
Through the structure, the inside of the fence frame 2 is provided with the ear-shaped end cover fixing points 9 for connecting the end cover 3, the cylindrical PCB fixing points 10 for fixing the sensor PCB4, the bottom plate 1 of the shell is provided with the shell fixing points 11 of a plurality of fixing pipelines 13, the wire harness perforating points 12 are arranged for installing the waterproof gram head, so that the signal wire harness can be conveniently fed in and fed out and fixed, and meanwhile, the waterproof gram head is used as one of sealing points of the sensor shell to the outside;
the end cap 3 of the housing is screwed to the rail frame 2, the sensor PCB4 is also screwed to the rail frame 2, and the housing is also screwed to the pipe 13.
Specifically, the aperture of the drainage holes 7 is smaller than that of the drainage holes 8, the number of the drainage holes 7 is larger than that of the drainage holes 8, the direction of the windward side 5 is opposite to the direction of the air flow in the pipeline 13, the direction of the air outlet side 6 is the same as the direction of the air flow in the pipeline 13, the windward side 5 and the air outlet side 6 are arc structures, a plurality of rectangular drainage holes 7 are uniformly distributed on the windward side 5, the drainage holes 7 are small and dense, a plurality of rectangular drainage holes 8 are uniformly distributed on the air outlet side 6, the drainage holes 8 are large and sparse, and the ratio of the sectional area of the drainage holes 7 to the sectional area of the drainage holes 8 of the windward side 5 is in a proportional relation.
The above describes in detail a sensor housing for detection provided by the present utility model. The principles and embodiments of the present utility model have been described herein with reference to specific examples, which are intended to be merely illustrative of the methods of the present utility model and their core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.

Claims (8)

1. The utility model provides a sensor shell for detection, its characterized in that includes the sensor shell of fixed mounting in pipeline (13), and the sensor shell includes bottom plate (1), rail frame (2), end cover (3) and sensor PCB (4), bottom plate (1) side and rail frame (2) fixed connection, windward side (5) and air-out face (6) on rail frame (2), a plurality of drainage holes (7) have been seted up on windward side (5), a plurality of drainage holes (8) have been seted up on air-out face (6).
2. A sensor housing for detection according to claim 1, characterized in that the aperture of the drainage holes (7) is smaller than the aperture of the drainage holes (8), the number of the drainage holes (7) being greater than the number of the drainage holes (8).
3. The sensor housing for detection according to claim 1, characterized in that the base plate (1) is provided with wire harness perforation points (12).
4. A sensor housing for detection according to claim 1, characterized in that the rail frame (2) is fixedly provided with end cap fixing points (9).
5. A sensor housing for detection according to claim 1, characterized in that the rail frame (2) is fixedly provided with PCB fixation points (10).
6. A sensor housing for detection according to claim 1, characterized in that the base plate (1) is fixedly provided with a housing fixing point (11).
7. A sensor housing for detection according to claim 1, characterized in that the windward side (5) is directed against the direction of the air flow in the duct (13), and the air outlet side (6) is directed against the direction of the air flow in the duct (13).
8. The sensor housing for detection according to claim 1, wherein the windward side (5) and the air-out side (6) are both arc-shaped structures.
CN202223382307.1U 2022-12-16 2022-12-16 Sensor shell for detection Active CN219328469U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202223382307.1U CN219328469U (en) 2022-12-16 2022-12-16 Sensor shell for detection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202223382307.1U CN219328469U (en) 2022-12-16 2022-12-16 Sensor shell for detection

Publications (1)

Publication Number Publication Date
CN219328469U true CN219328469U (en) 2023-07-11

Family

ID=87066017

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202223382307.1U Active CN219328469U (en) 2022-12-16 2022-12-16 Sensor shell for detection

Country Status (1)

Country Link
CN (1) CN219328469U (en)

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