CN217766487U - Film type wind speed transmitter - Google Patents
Film type wind speed transmitter Download PDFInfo
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- CN217766487U CN217766487U CN202221406846.1U CN202221406846U CN217766487U CN 217766487 U CN217766487 U CN 217766487U CN 202221406846 U CN202221406846 U CN 202221406846U CN 217766487 U CN217766487 U CN 217766487U
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- wind speed
- protective sleeve
- speed transmitter
- fixed tube
- hot film
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Abstract
The embodiment of the utility model discloses a film type wind speed transmitter, which comprises a fixed tube, a protective sleeve, a hot film probe and a circuit board; the circuit board is arranged in the fixed tube, the hot film probe is fixed at one end of the fixed tube and is electrically connected with the circuit board, an installation groove is formed in one end of the fixed tube, where the hot film probe is installed, and the protective sleeve is at least partially embedded into the installation groove to form fixed connection between the fixed tube and the protective sleeve; the detection part of the hot film probe is positioned in the protective sleeve. The utility model discloses can conveniently dismantle the protective sheath get off, in time clear away the dust in the protective sheath to avoid a large amount of accumulations of dust to cause the influence to measuring, through draw-in groove and bellied joint cooperation, installation easy dismounting, firm and difficult not hard up after the installation.
Description
Technical Field
The utility model belongs to the technical field of the sensor technique and specifically relates to film formula wind speed changer that says so.
Background
The wind speed transmitter is used for monitoring the flow rate of a gas medium, and the working principle of the wind speed transmitter is that the change of the flow rate of the gas is reflected by measuring the resistance difference change of two thermosensitive sensors on the wind speed transmitter.
The current thermal type wind speed transmitter generally adopts a fixed protection structure to carry out anti-collision protection on the detection part of a probe of the thermal type wind speed transmitter, and after the thermal type wind speed transmitter is used for a long time, a large amount of dust is accumulated in a protection result, so that the detection result is influenced.
Although there is removable protection architecture at present also, because structural design is unreasonable, it is easy not hard up after the installation, and dismantle inconveniently.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's not enough, provide film formula wind speed changer.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the film type wind speed transmitter comprises a fixed pipe, a protective sleeve, a hot film probe and a circuit board; the circuit board is arranged in the fixing tube, the hot film probe is fixed at one end of the fixing tube and is electrically connected with the circuit board, an installation groove is formed in one end of the fixing tube, where the hot film probe is installed, and the protective sleeve is at least partially embedded into the installation groove to form fixed connection between the fixing tube and the protective sleeve; the detection part of the hot film probe is positioned in the protective sleeve.
The further technical scheme is as follows: the protective sleeve penetrates through the measuring air duct, and the detection part of the hot film probe is located in the path of air flow circulation of the measuring air duct.
The further technical scheme is as follows: the air duct direction of the measuring air duct is perpendicular to the length direction of the hot film probe.
The further technical scheme is as follows: the protective sleeve is connected with the fixed pipe in a clamping mode.
The further technical scheme is as follows: the protective sheath with the mounting groove is connected the complex position and is the embedding part, the embedding part is the annular shape, embedding part circumference is provided with the draw-in groove, be equipped with in the mounting groove with draw-in groove joint complex arch.
The further technical scheme is as follows: the embedding part is provided with a first notch and a second notch along the axial direction.
The further technical scheme is as follows: the first notch extends from the head end of the embedded portion to the tail end of the embedded portion.
The further technical scheme is as follows: the first notch and the second notch are the same in length.
The further technical scheme is as follows: the gap direction of the first gap and the second gap is the same as the air duct direction of the measuring air duct.
Compared with the prior art, the utility model beneficial effect be: the one end of fixed pipe installation hot film probe is equipped with the mounting groove, and in the at least partial embedding mounting groove of protective sheath, the joint formula of formation was connected, can conveniently dismantle the protective sheath, in time clears away the dust in the protective sheath to avoid a large amount of accumulations of dust to cause the influence to the measurement. In addition, the embedding part circumference of protective sheath is provided with the draw-in groove, is equipped with draw-in groove joint complex arch in the mounting groove of fixed pipe, through draw-in groove and bellied joint cooperation, installation easy dismounting firmly just is difficult not hard up after the installation.
The foregoing is a summary of the present invention, and other objects, features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments, which is provided for the purpose of illustration and understanding of the present invention.
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 description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without any creative effort.
Fig. 1 is a schematic structural diagram of a thin film type wind speed transmitter according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a protective sleeve in the thin film type wind speed transmitter according to an embodiment of the present invention.
1. A fixed tube; 2. a protective sleeve; 21. measuring an air duct; 22. an insertion section; 221. a groove; 222. a first notch; 223. a second notch; 3. a hot film probe.
Detailed Description
The technical solutions of the present invention will be described clearly and completely below with reference to specific embodiments of the present invention, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in the specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.
Fig. 1 is a schematic structural diagram of a thin film type wind speed transmitter according to an embodiment of the present invention; fig. 2 is a schematic structural diagram of a protective sleeve 2 in the thin film type wind speed transmitter according to an embodiment of the present invention.
As shown in fig. 1 and 2, the thin film type wind speed transmitter comprises a fixed pipe 1, a protective sleeve 2, a hot film probe 3 and a circuit board (not shown in the figure); the circuit board is arranged in the fixed tube 1, the hot film probe 3 is fixed at one end of the fixed tube 1 and is electrically connected with the circuit board, an installation groove is formed in one end of the fixed tube 1, where the hot film probe 3 is installed, and the protective sleeve 2 is at least partially embedded in the installation groove to form fixed connection of the fixed tube 1 and the protective sleeve 2; the detection site of the hot film probe 3 is located in the protective sheath 2.
In this embodiment, fixed pipe 1 is long cylindricality form, fixed pipe 1 is inside to be equipped with and to hold the chamber, the circuit board is fixed in and holds in the chamber, the circuit board passes through connecting wire and 3 electric connection of hot membrane probe, in addition, the circuit board is still through the detection box electric connection that data transmission line and film formula wind speed changer were equipped with, be equipped with the display screen on the detection box, the gas flow rate that can directly look over the record through the display screen, binding post is installed to the detection box, reserve and have DC power source interface and signal line interface, in order to satisfy power consumption and signal transmission demand.
When the device works, the hot film probe 3 is exposed in the detected airflow, and the flow speed information of the airflow with the cross section detected by the hot film probe 3 is sent to the detection box and is displayed and output by the display screen.
Specifically, the thermal film probe 3 is selected from commercially available thermal film probes 3, for example, vf series thermal film probes 3.
In one embodiment, as shown in fig. 2, the protective sleeve 2 is provided with a measurement air duct 21, and the detection site of the thermal film probe 3 is located in the path of the air flow of the measurement air duct 21. When the air flow passes through the detection part of the hot film probe 3, the hot film probe 3 can detect the flow speed of the air flow.
Preferably, the wind tunnel direction of the measurement wind tunnel 21 is perpendicular to the length direction of the thermal film probe 3 to facilitate the detection of the measured air flow.
In an embodiment, the protective sleeve 2 is connected with the fixed tube 1 in a clamping manner, and the clamping connection mode is adopted, so that the disassembly and the assembly are convenient.
In an embodiment, the portion of the protective sheath 2 connected and matched with the mounting groove is an embedded portion 22, the embedded portion 22 is in a circular ring shape, a clamping groove is circumferentially arranged on the embedded portion 22, and a protrusion matched with the clamping groove in a clamping manner is arranged in the mounting groove. Through the cooperation of draw-in groove and bellied joint, installation easy dismounting firmly just is difficult not hard up after the installation.
In one embodiment, the insert portion 22 is provided with a first notch 222 and a second notch 223 along its axial direction.
In the present embodiment, the first notch 222 extends from the head end of the embedded portion 22 to the tail end of the embedded portion 22. The first notch 222 and the second notch 223 are the same length. The first notch 222 and the second notch 223 are provided to divide the embedded portion 22 into two opposite and isolated portions, so that when the embedded portion is installed, the two portions can be deformed to some extent when being pressed, thereby facilitating the installation.
In the present embodiment, the notch directions of the first notch 222 and the second notch 223 are the same as the wind channel direction of the measurement wind channel 21.
The utility model discloses an one end at fixed pipe installation hot film probe is equipped with the mounting groove, and in the at least partial embedding mounting groove of protective sheath, form the joint formula and connect, can conveniently dismantle the protective sheath, in time drive the dust in the protective sheath to avoid a large amount of accumulations of dust to cause the influence to measuring. In addition, the embedding part circumference of protective sheath is provided with the draw-in groove, is equipped with draw-in groove joint complex arch in the mounting groove of fixed pipe, through draw-in groove and bellied joint cooperation, installation easy dismounting firmly just is difficult not hard up after the installation.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. The film type wind speed transmitter is characterized by comprising a fixed pipe, a protective sleeve, a hot film probe and a circuit board; the circuit board is arranged in the fixed tube, the hot film probe is fixed at one end of the fixed tube and is electrically connected with the circuit board, an installation groove is formed in one end of the fixed tube, where the hot film probe is installed, and the protective sleeve is at least partially embedded into the installation groove so as to form fixed connection between the fixed tube and the protective sleeve; the detection part of the hot film probe is positioned in the protective sleeve.
2. The thin film wind speed transmitter of claim 1, wherein the protective sleeve is provided with a measurement air channel, and the detection portion of the hot film probe is located in a path of the measurement air channel through which air flows.
3. The thin film wind speed transmitter of claim 2, wherein the wind tunnel direction of the measurement wind tunnel is perpendicular to the length direction of the hot film probe.
4. The membrane wind speed transmitter of claim 2, wherein the protective sleeve is snap-fit to the fixed tube.
5. The film type wind speed transmitter according to claim 4, wherein the part of the protective sleeve, which is connected and matched with the mounting groove, is an embedded part, the embedded part is in a ring shape, a clamping groove is circumferentially arranged on the embedded part, and a protrusion matched with the clamping groove in a clamped manner is arranged in the mounting groove.
6. The diaphragm wind speed transmitter according to claim 5, wherein the embedding portion is provided with a first notch and a second notch along an axial direction thereof.
7. The diaphragm wind speed transmitter of claim 6, wherein the first notch extends from a head end of the embedded portion to a tail end of the embedded portion.
8. The membrane wind speed transmitter of claim 7, wherein the first and second gaps are the same length.
9. The membrane wind speed transmitter of claim 6, wherein the gap direction of the first gap and the second gap is the same as the wind channel direction of the measurement wind channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221406846.1U CN217766487U (en) | 2022-06-06 | 2022-06-06 | Film type wind speed transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221406846.1U CN217766487U (en) | 2022-06-06 | 2022-06-06 | Film type wind speed transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217766487U true CN217766487U (en) | 2022-11-08 |
Family
ID=83890266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221406846.1U Active CN217766487U (en) | 2022-06-06 | 2022-06-06 | Film type wind speed transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217766487U (en) |
-
2022
- 2022-06-06 CN CN202221406846.1U patent/CN217766487U/en active Active
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