CN217521185U

CN217521185U - Prevent wind speed changer of metal dust

Info

Publication number: CN217521185U
Application number: CN202221410210.4U
Authority: CN
Inventors: 刘志勇
Original assignee: Yidong Shenzhen Technology Co ltd
Current assignee: Yidong Shenzhen Technology Co ltd
Priority date: 2022-06-06
Filing date: 2022-06-06
Publication date: 2022-09-30
Anticipated expiration: 2032-06-06

Abstract

The embodiment of the utility model discloses a wind speed transmitter for preventing metal dust, which comprises a fixed pipe, a circuit board, a first heat-sensitive sensor and a second heat-sensitive sensor; the circuit board, the first thermal sensor and the second thermal sensor are embedded in the fixing pipe, the end faces of the detection parts of the first thermal sensor and the second thermal sensor are flush with the end face of one end of the fixing pipe, the first thermal sensor is provided with a heating coil, and gaps among the first thermal sensor, the second thermal sensor and the inner wall of the fixing pipe are sealed and filled through fillers. The utility model discloses when having avoided using in the adverse circumstances who contains the metal dust, the metal dust can be accumulated and lead to the problem that measurement accuracy descends. In addition, the fixing pipe is made of a high-temperature-resistant and corrosion-resistant metal material, so that the wind speed transmitter capable of preventing metal dust can be used in an environment containing dust or weak corrosion, and the application range of the wind speed transmitter capable of preventing metal dust is widened.

Description

Prevent wind speed changer of metal dust

Technical Field

The utility model belongs to the technical field of the sensor technique and specifically relates to a prevent wind speed changer of metal dust 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 structure of the existing wind speed transmitter is that a shielding structure is designed around the detection part of a thermosensitive sensor, the shielding structure is connected to a shell of the wind speed transmitter, and the detection part of the thermosensitive sensor extends out of the shielding structure from the shell, so that when the wind speed transmitter is used in a severe environment containing metal dust, the metal dust can be accumulated in the shielding structure, thereby reducing the measurement precision of the wind speed transmitter and influencing the measurement result.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's not enough, provide a prevent wind speed changer of metal dust.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a wind speed transmitter for preventing metal dust comprises a fixed pipe, a circuit board, a first thermosensitive sensor and a second thermosensitive sensor; the circuit board first temperature sensor with the second temperature sensor imbeds in the fixed pipe, just first temperature sensor with the detection site's of second temperature sensor terminal surface with the terminal surface parallel and level of the one end of fixed pipe, be equipped with heating coil on the first temperature sensor, first temperature sensor the second temperature sensor with clearance between the fixed inside pipe wall is sealed the packing through the filler that is equipped with.

The further technical scheme is as follows: the first thermosensitive sensor and the second thermosensitive sensor are arranged along the length direction of the fixing tube, and the first thermosensitive sensor and the second thermosensitive sensor are kept parallel.

The further technical scheme is as follows: the first heat-sensitive sensor is electrically connected with the circuit board through a first connecting wire.

The further technical scheme is as follows: and the second thermosensitive sensor is electrically connected with the circuit board through a second connecting wire.

The further technical scheme is as follows: the data transmission line is embedded into the fixed pipe, and one end of the data transmission line is electrically connected with the circuit board.

The further technical scheme is as follows: the fixed pipe is made of metal materials.

The further technical scheme is as follows: the fixed pipe is made of a high-temperature-resistant and anti-corrosion metal material.

The further technical scheme is as follows: the outer surface of the fixed pipe is at least partially provided with a thread part.

The further technical scheme is as follows: the fixed pipe is internally provided with a bracket for clamping and fixing the circuit board, and the bracket is fixedly connected with the inner wall of the fixed pipe.

The further technical scheme is as follows: the filler is epoxy resin.

Compared with the prior art, the utility model beneficial effect be: the utility model discloses a set up the terminal surface of first temperature sensor and second temperature sensor's detection site into the terminal surface parallel and level with the one end of fixed pipe, when having avoided using in the adverse circumstances who contains the metal dust, the metal dust can be accumulated and lead to the problem that measurement accuracy descends. In addition, the fixing pipe is made of a high-temperature-resistant and corrosion-resistant metal material, so that the wind speed transmitter capable of preventing metal dust can be used in an environment containing dust or weak corrosion, and the application range of the wind speed transmitter capable of preventing metal dust is widened.

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 metal dust-proof wind speed transmitter according to an embodiment of the present invention;

fig. 2 is a cross-sectional view of a wind speed transmitter for preventing metal dust according to an embodiment of the present invention.

Reference numerals

1. A fixed tube; 2. a data transmission line; 3. a circuit board; 4. a first heat-sensitive sensor; 5. a second heat-sensitive sensor; 6. a first connection line; 7. a second connecting line; 8. and (4) a filler.

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 work 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 metal dust-proof wind speed transmitter according to an embodiment of the present invention; fig. 2 is a cross-sectional view of a wind speed transmitter for preventing metal dust according to an embodiment of the present invention.

As shown in fig. 1 and 2, a metal dust-proof wind speed transmitter comprises a fixed pipe 1, a circuit board 3, a first heat-sensitive sensor 4 and a second heat-sensitive sensor 5; the circuit board 3, the first thermal sensor 4 and the second thermal sensor 5 are embedded in the fixed tube 1, the end faces of the detection parts of the first thermal sensor 4 and the second thermal sensor 5 are flush with the end face of one end of the fixed tube 1, the first thermal sensor 4 is provided with a heating coil, and gaps among the first thermal sensor 4, the second thermal sensor 5 and the inner wall of the fixed tube 1 are sealed and filled with fillers 8.

In this embodiment, the fixing tube 1 is a circular tube and has a hollow structure, and two ends of the fixing tube are open, the circuit board 3, the first thermal sensor 4 and the second thermal sensor 5 can be placed in the hollow structure of the fixing tube 1 from the openings of the two ends, so as to avoid the problem that when the fixing tube is used in a severe environment containing metal dust, the metal dust is accumulated to cause the reduction of the measurement accuracy. The end faces of the detection parts of the first thermal sensor 4 and the second thermal sensor 5 are flush with the end face of one end of the fixed pipe 1, and because the end faces are flush with each other, and the gap at the end face position is sealed and filled by the filler 8, metal dust cannot be accumulated at the detection part.

In the present embodiment, the first and second thermo-sensors 4 and 5 are each arranged along the length direction of the fixed pipe 1, and both are kept parallel. The circuit board 3 is in the shape of a long plate, which is arranged along the length direction of the fixing tube 1. The first thermal sensor 4, the second thermal sensor 5 and the circuit board 3 are all arranged in the fixed tube 1, but the first thermal sensor, the second thermal sensor and the circuit board are not overlapped or staggered, so that mutual interference can be avoided. The circuit board 3 is located behind the first and second thermal sensors 4 and 5.

Preferably, the filler 8 is an epoxy resin. The epoxy resin sealing has the advantages of alkali resistance, heat resistance (180-200 ℃) and electrical insulation, is convenient to use, and does not interfere with the detection of the first thermosensitive sensor 4 and the second thermosensitive sensor 5.

As shown in fig. 1, in one embodiment, the first thermal sensor 4 is electrically connected to the circuit board 3 through a first connection line 6. The second thermal sensor 5 is electrically connected with the circuit board 3 through a second connecting wire 7.

In the present embodiment, the first connection line 6 and the second connection line 7 are connection lines commonly used in the market for electrical connection, and a description thereof will not be provided in the present application. The connection is carried out in a wired mode, so that the stability of data transmission can be improved, and the manufacturing cost is low.

In an embodiment, prevent that metal dust's wind speed changer still includes data transmission line 2, data transmission line 2's one end imbeds in fixed pipe 1 with circuit board 3 electric connection, data transmission line 2's the other end and the detection box (not shown in the figure, and not the structure that this application protected) that prevents that metal dust's wind speed changer is equipped with are connected, be equipped with the LED display screen on the detection box, the gas flow rate that can directly look over record through the display screen, it installs the battery or has direct current power supply to insert the mouth to detect the box, can realize heating coil.

In an embodiment, the other end of the data transmission line 2 is provided with a connector, and the connector is provided with a buckle structure, and can be fastened and fixed with the clamping structure of the detection box through the buckle structure.

In one embodiment, the data transmission line 2 is made of a flexible material so as to be bent properly and increase flexibility in use.

In this embodiment, the other end of the data transmission line 2 extending from the fixing tube 1 is opened, so that the freedom of movement of the data transmission line 2 is further improved.

Preferably, the fixing tube 1 is made of a metal material. More preferably, the fixing tube 1 is made of a high temperature resistant and corrosion resistant metal material. The fixed pipe 1 is made of a high-temperature-resistant and corrosion-resistant metal material, so that the wind speed transmitter for preventing metal dust can be used in an environment containing dust or weak corrosion, and the application range of the wind speed transmitter for preventing metal dust is widened.

In an embodiment, the outer surface of the stationary pipe 1 is at least partially provided with a threaded portion. The arranged thread part is convenient to be arranged on other objects when in use.

In an embodiment, a bracket for clamping the circuit board 3 is arranged in the fixed tube 1, and the bracket is fixedly connected with the inner wall of the fixed tube 1.

Specifically, the support includes first supporting part and second supporting part, all is equipped with the draw-in groove that suits with 3 thickness of circuit board on first supporting part and the second supporting part, and first supporting part and for the second supporting part screw relatively install on the inside of fixed pipe 1, during the installation, 3 cards of circuit board go into the draw-in groove of first supporting part and second supporting part to form fixedly, the dismantlement be, circuit board 3 along fixed pipe 1 length direction take out from can, easy dismounting.

During the use, will prevent that the wind speed changer of metal dust arranges the environment in the gas velocity of flow that needs the measurement in, heating coil during operation has a temperature a bit, can take away a part of heat of heating coil on the first heat-sensitive sensor when the gas that needs the measurement passes through first heat-sensitive sensor, through measuring the resistance difference change of first heat-sensitive sensor and second heat-sensitive sensor, alright know the change of gas velocity of flow to the control of gas velocity of flow has been realized.

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

1. A wind speed transmitter for preventing metal dust is characterized by comprising a fixed pipe, a circuit board, a first thermosensitive sensor and a second thermosensitive sensor; the circuit board, the first thermal sensor and the second thermal sensor are embedded into the fixed pipe, the end faces of the detection parts of the first thermal sensor and the second thermal sensor are flush with the end face of one end of the fixed pipe, the first thermal sensor is provided with a heating coil, and gaps among the first thermal sensor, the second thermal sensor and the inner wall of the fixed pipe are sealed and filled with fillers.

2. The metal-dusting wind speed transmitter of claim 1, wherein the first and second thermal sensors are arranged along the length of the fixed pipe and parallel to each other.

3. The metal dust-proof wind speed transmitter according to claim 2, wherein the first thermal sensor is electrically connected to the circuit board through a first connection wire.

4. The metal dust-proof wind speed transmitter according to claim 2, wherein the second thermal sensor is electrically connected to the circuit board through a second connection wire.

5. The metal dust-proof wind speed transmitter according to claim 2, further comprising a data transmission line, wherein one end of the data transmission line is embedded in the fixing tube and electrically connected with the circuit board.

6. The metal dust-proof wind speed transmitter according to claim 1, wherein the fixing tube is made of metal.

7. The metal dust-proof wind speed transmitter according to claim 6, wherein the fixing tube is made of a high temperature resistant and corrosion resistant metal material.

8. The metal dust resistant wind speed transmitter according to claim 1, wherein an outer surface of the fixing tube is at least partially provided with a threaded portion.

9. The metal dust-proof wind speed transmitter according to claim 1, wherein a bracket for fixing the circuit board is arranged in the fixing pipe, and the bracket is fixedly connected with the inner wall of the fixing pipe.

10. The metal dusting resistant wind speed transmitter of claim 1 wherein the filler is an epoxy resin.