CN209978976U - Flow detection device - Google Patents
Flow detection device Download PDFInfo
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- CN209978976U CN209978976U CN201921200808.9U CN201921200808U CN209978976U CN 209978976 U CN209978976 U CN 209978976U CN 201921200808 U CN201921200808 U CN 201921200808U CN 209978976 U CN209978976 U CN 209978976U
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Abstract
The utility model discloses a flow detection device relates to flow detection technical field. The flow detection device comprises a detection air source, a detection assembly and a fixing assembly, wherein the detection assembly comprises a liquid level pipe and a gas collecting bottle, one end of the liquid level pipe is inserted into the gas collecting bottle, the other end of the liquid level pipe is communicated with the outside, the gas collecting bottle is used for containing colored liquid, one end of the fixing assembly is communicated with the gas collecting bottle, the other end of the fixing assembly is selectively communicated with the detection air source, the fixing assembly is used for conveying gas output by the detection air source to the gas collecting bottle, and the fixing assembly is also used for installing a piece to be detected so that the gas output by the detection air source flows through the. The utility model provides a flow detection device can effectively detect the air mass flow of multiple micropores such as income gas pocket of electrochemistry gas sensor, and the testing result is accurate, and easy operation, extensive applicability.
Description
Technical Field
The utility model relates to a flow detection technical field particularly, relates to a flow detection device.
Background
The gas inlet hole of the electrochemical gas sensor is arranged on a sheet plastic part, the hole opening of the electrochemical gas sensor is in a step shape, and the hole pattern of the electrochemical gas sensor is extremely slender.
Because the orifice of the air inlet hole is in a step shape and is extremely thin and long, the air flow of the air inlet hole can not be effectively detected almost by the flow meter on the market, and the detection precision of the flow meter on the market can not meet the precision requirement of the air flow detection of the air inlet hole.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a flow detection device, it can effectively detect the air mass flow of the income gas pocket of electrochemistry gas sensor to can obtain more accurate testing result.
The utility model provides a technical scheme:
a flow detection device comprises a detection air source, a detection assembly and a fixing assembly;
the detection assembly comprises a liquid level pipe and a gas collecting bottle, one end of the liquid level pipe is inserted into the gas collecting bottle, the other end of the liquid level pipe is communicated with the outside, and the gas collecting bottle is used for containing colored liquid;
one end of the fixing component is communicated with the gas collecting bottle, the other end of the fixing component is selectively communicated with the detection gas source and used for conveying the gas output by the detection gas source to the gas collecting bottle, and the fixing component is also used for installing a piece to be detected so that the gas output by the detection gas source flows through the piece to be detected before entering the gas collecting bottle.
Furthermore, the flow detection device further comprises a controller and a first electric control valve, one end of the first electric control valve is communicated with the detection air source, the other end of the first electric control valve is communicated with one end of the fixing component, and the first electric control valve is electrically connected with the controller.
Furthermore, the flow detection device further comprises a second electric control valve, the second electric control valve is arranged on the gas collecting bottle, the inner space of the gas collecting bottle is selectively communicated with the outside through the second electric control valve, and the second electric control valve is electrically connected with the controller.
Further, fixed subassembly includes installed part and fitting piece, the installed part with the fitting piece can be dismantled and be connected, in order to centre gripping the piece that awaits measuring, detect the air supply with installed part selectivity intercommunication, the gas collecting bottle with the fitting piece intercommunication.
Furthermore, an air inlet hole is formed in the mounting piece in a penetrating mode, one end of the air inlet hole is selectively communicated with the detection air source, an air outlet hole is formed in the fitting piece in a penetrating mode, one end of the air outlet hole is communicated with the air collecting bottle, and when the mounting piece and the fitting piece clamp the piece to be detected, the air inlet hole, the micro hole in the piece to be detected and the air outlet hole are all communicated.
Further, the mounting member is threadedly connected to the fitting member.
Further, the fixing assembly further comprises a first sealing element and a second sealing element, when the mounting element and the fitting element clamp the to-be-detected element, the mounting element abuts against one side of the to-be-detected element through the first sealing element, and the fitting element abuts against the other side of the to-be-detected element through the second sealing element.
Furthermore, through holes are respectively arranged on the first sealing element and the second sealing element in a penetrating manner.
Further, the first sealing element and the second sealing element are both sheet-shaped elastic elements.
Furthermore, the detection gas source comprises a high-pressure gas cylinder and a third electric control valve, and the third electric control valve is arranged on the high-pressure gas cylinder, selectively communicated with one end of the fixing assembly and used for adjusting the flow of the output gas of the high-pressure gas cylinder.
Compared with the prior art, the utility model provides a flow detection device, in practical application, the splendid attire has partial coloured liquid in the gas collecting bottle, insert the liquid level pipe one end submergence in the gas collecting bottle below the liquid level of coloured liquid, install the plastic part that is provided with into the gas pocket of electrochemical sensor in fixed subassembly, the gas that detects the air supply is when getting into the gas collecting bottle through fixed subassembly, flow through by the income gas pocket on the plastic part, gaseous admission gas collecting bottle is back, atmospheric pressure in the gas collecting bottle crescent, coloured liquid receives the extrusion and rises along the liquid level pipe and form the liquid column. Therefore, the flow corresponding to the scales on the liquid level pipe is calibrated before detection, the air flow of the air inlet hole can be obtained according to the scales corresponding to the liquid column after preset time, the detection result is accurate and reliable, the detection result is not influenced by the shape and the hole pattern of the capillary hole, and the operation is simple. Therefore, the utility model provides a flow detection device's beneficial effect is: the air flow of various micropores such as an air inlet hole of the electrochemical gas sensor can be effectively detected, the detection result is accurate, the operation is simple, and the applicability is wide.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below. It is appreciated that the following drawings depict only certain embodiments of the invention and are therefore not to be considered limiting of its scope. For a person skilled in the art, it is possible to derive other relevant figures from these figures without inventive effort.
Fig. 1 is a schematic structural diagram of a flow rate detection device according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of the fixing assembly of FIG. 1;
fig. 3 is a schematic view of an actual application of the flow rate detection device according to the embodiment of the present invention;
fig. 4 is a schematic structural diagram of the region a in fig. 3.
Icon: 100-a flow detection device; 110-detecting a gas source; 111-high pressure gas cylinder; 113-a third electrically controlled valve; 130-a stationary component; 131-a mount; 1311-intake ports; 133-a mating member; 1331-air outlet holes; 135-a first seal; 137-a second seal; 150-a detection component; 151-gas collecting bottle; 153-level tube; 170-a first electrically controlled valve; 180-a controller; 190-a second electrically controlled valve; 200-plastic parts.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "inner", "outer", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally placed when the products of the present invention are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and are merely for convenience of description of the present invention and simplifying the description, but do not indicate or imply that the device or element that is referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be further noted that, unless explicitly stated or limited otherwise, the terms "disposed" and "connected" are to be interpreted broadly, and for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; the connection may be direct or indirect via an intermediate medium, and may be a communication between the two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The following describes in detail embodiments of the present invention with reference to the accompanying drawings.
Examples
Referring to fig. 1, the flow rate detecting device 100 of the present embodiment is applied to detecting air flow rates of various micropores, such as air inlets of an electrochemical gas sensor, and has the advantages of accurate detection result, simple operation, and wide applicability.
The flow rate detecting device 100 of the present embodiment includes a detecting air source 110, a fixing component 130, a detecting component 150, a first electronic control valve 170, a controller 180, and a second electronic control valve 190.
The detection assembly 150 includes a gas collecting bottle 151 and a liquid level tube 153, one end of the liquid level tube 153 is inserted into the gas collecting bottle 151, and the other end of the liquid level tube 153 is communicated with the outside. The gas collecting bottle 151 is used for containing colored liquid, and the liquid level tube 153 is used for displaying the height of the liquid column so as to reflect the amount of gas entering the gas collecting bottle 151.
The detection air source 110 is connected with one end of the fixing component 130 through a pipeline, and the fixing component 130 is used for installing a piece to be detected so as to detect the air flow of a micropore formed in the piece to be detected. One end of the first electric control valve 170 is communicated with the detection air source 110, the other end of the first electric control valve 170 is communicated with one end of the fixing component 130, and the first electric control valve 170 is used for controlling the connection and disconnection of the connection pipeline between the detection air source 110 and the fixing component 130. The gas collecting bottle 151 of the detecting assembly 150 is connected to the other end of the fixing assembly 130 via a pipeline for receiving the detecting gas, i.e. air in this embodiment, from the detecting gas source 110 conveyed by the fixing assembly 130. Air flows into the gas collecting bottle 151 through the micro-hole on the piece to be measured, and extrudes the colored liquid contained in the gas collecting bottle 151, so that the colored liquid rises along the liquid level pipe 153 to form a liquid column.
In the detection process, the first electronic control valve 170 is opened, and the gas output by the detection gas source 110 flows through the micro-holes of the object to be detected after reaching the fixing assembly 130, flows out of the fixing assembly 130, and enters the gas collecting bottle 151. As gas enters, the gas pressure in the gas collection bottle 151 increases, forcing the colored liquid into the liquid level tube 153 to form a liquid column. When the first electric control valve 170 is opened for a preset time, a liquid column with corresponding scales can be formed in the liquid level pipe 153, and therefore, only reference data needs to be preset before detection, and flow data of the to-be-detected part under the corresponding air source pressure can be obtained through detection.
In this embodiment, the detection gas source 110 includes a high-pressure gas cylinder 111 and a third electrically controlled valve 113 disposed on the high-pressure gas cylinder 111 and communicated with the inside thereof. In this embodiment, the air flow rate is detected, and the compressed air is contained in the high-pressure gas cylinder 111. The third electronic control valve 113 is in pipeline communication with the first electronic control valve 170, and is used for adjusting the flow rate of the air output by the high-pressure air bottle 111, so as to ensure that the output air pressure can be kept constant as required in the detection process.
The second electrically controlled valve 190 is disposed on the gas collecting bottle 151, and is used for selectively communicating the inside of the gas collecting bottle 151 with the outside. In essence, the second electrically controlled valve 190 is used to eliminate the air pressure difference in the bottle, so that the air pressure in the bottle is the same as the atmospheric pressure, and the liquid column in the liquid level tube 153 is lowered to the liquid level in the bottle for the next detection.
In this embodiment, the first electronic control valve 170 and the second electronic control valve 190 are automatically controlled by the controller 180, that is, the controller 180 is electrically connected to the first electronic control valve 170 and the second electronic control valve 190, in this embodiment, the controller 180 is a single chip microcomputer.
Before detection, the opening degree of the third electronic control valve 113 is adjusted according to the detected air pressure requirement, then the controller 180 controls the second electronic control valve 190 to be closed after opening one end, so that the air pressure in the cylinder is recovered to the atmospheric pressure, then the controller 180 controls the first electronic control valve 170 to be opened, so that the high-pressure air cylinder 111 conveys air to the fixed component 130 by using constant output air pressure, the air flows through micropores on the piece to be detected in the fixed component 130, then leaves the fixed component 130 and enters the air collecting cylinder 151 by using a flow with a specific size. After the preset time, the controller 180 controls the first electronic control valve 170 to close, stops gas delivery, observes the liquid column scale of the liquid level tube 153, and compares the liquid column scale with the reference data to obtain the air flow rate of the micro-hole on the to-be-measured object under the air pressure.
Referring to fig. 1 and 2, the fixing assembly 130 includes a mounting member 131 and a fitting member 133, the mounting member 131 is detachably connected to the fitting member 133 to clamp the device under test, the detecting gas source 110 is selectively communicated with the mounting member 131, that is, the mounting member 131 is communicated with the first electrically controlled valve 170, and the gas collecting bottle 151 is communicated with the fitting member 133.
The mounting member 131 is provided with a gas inlet 1311 selectively communicated with the detecting gas source 110, that is, the gas inlet 1311 is communicated with the first electrically controlled valve 170, the fitting member 133 is provided with a gas outlet 1331 communicated with the gas collecting bottle 151, and when the mounting member 131 and the fitting member 133 clamp the device under test, the gas inlet 1311 is communicated with the through hole of the device under test and the gas outlet 1331. That is, in practical application, the gas output from the detection gas source 110 sequentially passes through the gas inlet 1311, the micro-hole of the to-be-detected part, and the gas outlet 1331, and then enters the gas collecting bottle 151.
In this embodiment, the mounting member 131 is screwed to the fitting member 133 to improve the sealing property. The mounting member 131 is provided with an internal thread and the fitting member 133 is provided with an external thread matching the internal thread of the mounting member 131.
Referring to fig. 2, the fixing assembly 130 further includes a first sealing element 135 and a second sealing element 137, in this embodiment, the first sealing element 135 and the second sealing element 137 are both rubber sealing pieces with through holes. The first sealing member 135 serves to seal a gap between the member to be tested and the mounting member 131, and the second sealing member 137 serves to seal a gap between the member to be tested and the fitting member 133. When the mounting member 131 and the fitting member 133 clamp the dut, the mounting member 131 abuts against one side of the dut through the first sealing member 135, and the fitting member 133 abuts against the other side of the dut through the second sealing member 137.
Fig. 3 is a schematic view of an actual application of the flow rate detection device 100 according to this embodiment, in this application environment, the to-be-detected part adopts a plastic part 200 with an air inlet hole on the electrochemical gas sensor, and performs air flow rate detection on the to-be-detected part, and the air collecting bottle 151 contains colored liquid.
Referring to fig. 3 and 4, the plastic member 200 is clamped between the first sealing member 135 and the second sealing member 137. When the plastic member 200 is mounted, the first sealing member 135 is first installed in the mounting member 131, the plastic member 200 is then installed, the second sealing member 137 is then installed, and finally the fitting member 133 is screwed in.
The air inlet holes of the plastic part 200 are communicated with the through holes of the first sealing element 135 and the second sealing element 137, and the through holes of the first sealing element 135 and the second sealing element 137 are also communicated with the air inlet hole 1311 and the air outlet hole 1331 respectively. In the actual detection process, the gas outputted from the detection gas source 110 sequentially flows through the gas inlet 1311, the through hole of the first sealing member 135, the gas inlet hole of the plastic part 200, the through hole of the second sealing member 137, and the gas outlet 1331, and finally enters the gas collecting bottle 151.
The application environment is used for screening plastic parts 200 with flow rate not meeting the requirement, and before detection, a plastic part 200 with a new standard is selected and installed in the fixing assembly 130. After the installation is finished, the third electric control valve 113 is adjusted according to the detected air pressure requirement, the controller 180 controls the second electric control valve 190 to be opened and then closed firstly to balance the air pressure in the air collecting bottle 151, then the controller 180 controls the first electric control valve 170 to be opened, and after the preset time, the first electric control valve 170 is controlled to be closed, so that the reference scale can be obtained, and the flow qualified range can be obtained according to the allowable error range. And then repeating the operation, detecting a plurality of plastic parts 200 to be detected, and judging that the flow of the plastic parts 200 does not meet the requirement when the corresponding liquid column scales exceed the qualified flow range.
In summary, the flow rate detection device 100 provided in this embodiment is applied to the air flow rate detection of various micropores such as the air inlet of the electrochemical gas sensor, and can detect the hole pattern that is difficult to detect by the existing flow meter, and the hole shape and the hole pattern have no influence on the detection result, and the flow rate detection device is simple to operate and has wide applicability and accurate detection result.
Therefore, the utility model provides a flow detection device 100 can effectively detect the air mass flow of multiple micropores such as the income gas pocket of electrochemistry gas sensor, and the testing result is accurate, and easy operation, extensive applicability.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A flow detection device is characterized by comprising a detection air source, a detection assembly and a fixing assembly;
the detection assembly comprises a liquid level pipe and a gas collecting bottle, one end of the liquid level pipe is inserted into the gas collecting bottle, the other end of the liquid level pipe is communicated with the outside, and the gas collecting bottle is used for containing colored liquid;
one end of the fixing component is communicated with the gas collecting bottle, the other end of the fixing component is selectively communicated with the detection gas source and used for conveying the gas output by the detection gas source to the gas collecting bottle, and the fixing component is also used for installing a piece to be detected so that the gas output by the detection gas source flows through the piece to be detected before entering the gas collecting bottle.
2. The flow sensing device according to claim 1, further comprising a controller and a first electrically controlled valve, wherein one end of the first electrically controlled valve is communicated with the sensing air source, and the other end of the first electrically controlled valve is communicated with one end of the fixing member, and the first electrically controlled valve is electrically connected to the controller.
3. The flow sensing device according to claim 2, further comprising a second electrically controlled valve disposed on the gas collecting bottle, wherein the interior space of the gas collecting bottle is selectively communicated with the outside through the second electrically controlled valve, and the second electrically controlled valve is electrically connected to the controller.
4. The flow sensing device according to any one of claims 1-3, wherein the fixing assembly comprises a mounting member and a fitting member, the mounting member is detachably connected to the fitting member for clamping the device under test, the sensing gas source is selectively communicated with the mounting member, and the gas bottle is communicated with the fitting member.
5. The flow rate detecting device according to claim 4, wherein an air inlet hole is formed through the mounting member, one end of the air inlet hole is selectively communicated with the detecting air source, an air outlet hole is formed through the fitting member, one end of the air outlet hole is communicated with the air collecting bottle, and when the mounting member and the fitting member clamp the device under test, the air inlet hole, the micro-hole of the device under test and the air outlet hole are all communicated.
6. The flow sensing device of claim 4, wherein the mount is threadably connected to the fitting.
7. The flow rate detecting device according to claim 4, wherein the fixing assembly further includes a first sealing element and a second sealing element, when the mounting element and the fitting element clamp the to-be-detected element, the mounting element abuts against one side of the to-be-detected element through the first sealing element, and the fitting element abuts against the other side of the to-be-detected element through the second sealing element.
8. The flow sensing device of claim 7, wherein the first and second sealing members each have a through hole formed therethrough.
9. The flow sensing device of claim 7, wherein the first and second sealing members are each a sheet-like resilient member.
10. The flow sensing device according to claim 1, wherein the sensing gas source comprises a high-pressure gas cylinder and a third electrically controlled valve, and the third electrically controlled valve is disposed on the high-pressure gas cylinder and selectively communicated with one end of the fixing component, so as to adjust the flow of the output gas of the high-pressure gas cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921200808.9U CN209978976U (en) | 2019-07-29 | 2019-07-29 | Flow detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921200808.9U CN209978976U (en) | 2019-07-29 | 2019-07-29 | Flow detection device |
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| CN209978976U true CN209978976U (en) | 2020-01-21 |
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| CN201921200808.9U Active CN209978976U (en) | 2019-07-29 | 2019-07-29 | Flow detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110260935A (en) * | 2019-07-29 | 2019-09-20 | 盛密科技(上海)有限公司 | A kind of flow detector |
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2019
- 2019-07-29 CN CN201921200808.9U patent/CN209978976U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110260935A (en) * | 2019-07-29 | 2019-09-20 | 盛密科技(上海)有限公司 | A kind of flow detector |
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