CN217561751U

CN217561751U - Pipeline liquid flow detection device

Info

Publication number: CN217561751U
Application number: CN202221472349.1U
Authority: CN
Inventors: 柳佳芳; 黄兰
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-06-13
Filing date: 2022-06-13
Publication date: 2022-10-11
Anticipated expiration: 2032-06-13

Abstract

The application relates to a liquid flow detection subassembly, including electric capacity detection sensor, electric capacity detection sensor is provided with detecting channel and fixed channel, detecting channel is connected with detection probe and is used for detecting the electric capacity change that liquid flowed through the production, fixed channel connects the condenser of fixed capacitance value. Because the environmental capacitance under the anhydrous state is different from the environmental capacitance under the water state, the capacitance change state of the liquid is detected by using the detection probe and then compared with the sampling value of the capacitor of the fixed channel, thereby realizing the discrimination of the existence of the liquid.

Description

Pipeline liquid flow detection device

Technical Field

The application relates to the technical field of liquid flow detection, in particular to a pipeline liquid flow detection device.

Background

In the use process of many devices, it is often necessary to detect the presence or absence of a liquid state change to provide an effective prompt signal and notify the host computer to take corresponding measures to protect the devices from being operated effectively, reduce energy consumption, prolong service life, and the like. For example, many current household cleaning equipment intelligent floor cleaning machines, floor sweeping robots and the like are provided with liquid spraying pipelines. However, in the prior art, it is difficult to detect whether the liquid state of the pipeline changes or not.

SUMMERY OF THE UTILITY MODEL

To the problem that it is inconvenient to detect whether the pipeline has liquid state change in the prior art, the application provides a pipeline liquid flow detection device, which adopts the following technical scheme:

in a first aspect, the present application provides a liquid flow detection assembly, including electric capacity detection sensor, electric capacity detection sensor is provided with sense passage and fixed channel, sense passage is connected with detection probe and is used for detecting the electric capacity change that liquid flows through the production, fixed channel connects the capacitor of fixed capacitance value.

By adopting the technical scheme, because the environmental capacitance under the water-free state is different from the environmental capacitance under the water-containing state, the capacitance change state of the liquid is detected by using the detection probe and then compared with the sampling value of the capacitor of the fixed channel, thereby realizing the discrimination of the existence of the liquid.

Preferably, the capacitance detection sensor (12) is further connected with a CDC capacitor for adjusting the sensitivity of the detection chip for detecting different liquids.

Preferably, the detection probe is a stainless steel probe. The stainless steel probe has the effects of corrosion resistance, oxidation resistance and the like.

In a second aspect, the present application provides a pipeline liquid flow detection device, which includes a housing and the liquid flow detection assembly as described in the first aspect, a detection cavity is provided inside the housing for communicating with the pipeline, and the detection probe passes through the housing and enters the detection cavity.

Preferably, the housing comprises a first housing and a second housing, the detection chamber is arranged in the first housing, and the liquid flow detection assembly is arranged on the second housing. Thereby facilitating assembly of the housing.

Preferably, a positioning groove is formed in the first shell and is communicated with the detection cavity in a fluid mode, and a positioning block matched with the positioning groove is arranged on the second shell.

Preferably, the cross-sectional area of the detection chamber is equal to the cross-sectional area of the conduit. The liquid of the pipeline can fill the whole cavity when entering the detection cavity.

Preferably, the housing is provided with two ports for connection to a conduit, the ports being in fluid communication with the detection chamber. Thereby facilitating the butt joint with the pipeline.

Preferably, a connecting portion is disposed on an outer peripheral side of the interface, the connecting portion is disposed at an end of the interface away from the first housing, and a cross-sectional area of the connecting portion gradually increases from the end away from the interface to the end close to the interface. Thereby making the interface and pipe connection more stable.

Preferably, the second housing is provided with a receiving groove for placing a pipeline. The pipeline can be placed on the bearing groove, so that the pipeline is not easy to fall off when being connected with the pipeline liquid flow detection device.

In summary, the present application includes at least one of the following beneficial technical effects:

1. because the environmental capacitance under the water-free state is different from the environmental capacitance under the water state, the capacitance change state of the liquid is detected by using the detection probe and then compared with the sampling value of the capacitor of the fixed channel, thereby realizing the discrimination of the existence of the liquid;

2. the shell comprises the first shell and the second shell, the detection cavity is arranged in the first shell, and the liquid flow detection assembly is arranged on the second shell, so that the assembly of the shell is convenient;

3. the positioning groove is formed in the first shell and is communicated with the detection cavity in a fluid mode, and the positioning block matched with the positioning groove is arranged on the second shell, so that the shells can be further conveniently assembled.

Drawings

The accompanying drawings are included to provide a further understanding of the embodiments and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments and together with the description serve to explain the principles of the application. Other embodiments and many of the intended advantages of embodiments will be readily appreciated as they become better understood by reference to the following detailed description. The elements of the drawings are not necessarily to scale relative to each other. Like reference numerals designate corresponding similar parts.

Fig. 1 is a schematic structural diagram of a device for detecting a liquid flow in a pipeline according to an embodiment of the present disclosure.

Fig. 2 is a schematic diagram illustrating a structure of the first housing according to the embodiment of the present application.

Fig. 3 is an exploded schematic view of a pipeline fluid flow detection device according to an embodiment of the present application.

FIG. 4 is a schematic diagram of a structure of the embodiment of the present application for protruding the mounting groove.

Fig. 5 is another view of fig. 3.

Description of the reference numerals: 1. a housing; 2. a first housing; 3. a second housing; 4. a detection chamber; 5. positioning a groove; 6. positioning blocks; 7. an interface; 8. a connecting portion; 9. a bearing block; 10. a receiving groove; 11. mounting grooves; 12. a capacitance detection sensor; 14. and (3) detecting the probe.

Detailed Description

The present application will be described in further detail with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It should be noted that, for convenience of description, only the portions related to the related invention are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Referring to fig. 1, a device for detecting a liquid flow in a pipeline disclosed in an embodiment of the present application includes a housing 1, where the housing 1 includes a first housing 2 and a second housing 3. The first housing 2 and the second housing 3 are welded and fixed, in a specific embodiment, a bump is first disposed on the second housing 3, and then the bump is directly melted by ultrasonic bonding and then welded and fixed with the first housing 2.

Referring to fig. 2 and 3, a detection cavity 4 is provided in the first casing 2, a positioning groove 5 is further provided on the first casing 2, the positioning groove 5 is communicated with the detection cavity 4, and a positioning block 6 matched with the positioning groove 5 is provided on the second casing 3.

The cross-sectional area of the detection chamber 4 is equal to the cross-sectional area of the pipeline, so that the liquid in the pipeline can fill the whole cavity when entering the detection chamber 4.

The both sides of first casing 2 are provided with the interface 7 that is used for with the pipe connection, and the interface 7 of both sides is located same straight line, and interface 7 and detection chamber 4 fluid intercommunication, the periphery wall of interface 7 is provided with connecting portion 8, and connecting portion 8 sets up the one end of keeping away from first casing 2 at interface 7, and the cross-sectional area of connecting portion 8 is circular, and the cross-sectional area of connecting portion 8 is from the one end of keeping away from interface 7 to the one end of being close to interface 7 grow gradually. The connection part 8 is arranged to realize the fixed connection of the interface 7 and the pipeline.

Referring to fig. 3, the two sides of the second housing 3 are provided with receiving blocks 9, one side of the receiving block 9 close to the connecting portion 8 is provided with a receiving groove 10 for placing a pipeline, the receiving groove 10 is opposite to the interface 7, and the bottom wall layer of the receiving groove 10 is arranged in an arc shape. The bottom wall of the receiving groove 10 is set to be arc-shaped, so that the pipeline can be placed conveniently.

Referring to fig. 3 to 5, a mounting groove 11 is disposed on the second housing 3, and the mounting groove 11 is located on a side of the second housing 3 away from the first housing 2. A capacitance detection sensor 12 is provided in the mounting groove 11. The capacitance detection sensor 12 is connected with a detection probe 14, and the detection probe 14 extends into the detection cavity 4. In this embodiment, the detection probe 14 is a stainless steel probe, which has corrosion-resistant and oxidation-resistant effects.

Because interface 7 sets up on first casing 2, and electric capacity detection sensor 12 sets up on second casing 3, can install or dismantle electric capacity detection sensor 12 on second casing 3 earlier when installation or dismantlement electric capacity detection sensor 12, later with second casing 3 on together with first casing 2 installation to make things convenient for whole equipment.

The capacitance detection sensor 12 is provided with a detection channel connected with a detection probe 14 for detecting capacitance change generated by liquid flowing therethrough and a fixed channel connected with a capacitor of fixed capacitance value. The capacitive sensing sensor and sensing probe 14 comprise a fluid flow sensing assembly.

The change condition of the capacitance of the detection cavity 4 is detected through the detection probe 14, the capacitor with a fixed capacitance value is matched with the environment capacitance in the water-free state, and the environment capacitance in the water-free state is different from the environment capacitance in the water-containing state, so that the detection chip can detect the change of the capacitance through the detection probe 14, convert the capacitance analog quantity into data quantity, process and judge through internal logic operation and identify whether the liquid state exists in the detection cavity 4 or not.

In a further embodiment, the capacitive detection sensor is further connected with a CDC capacitor for adjusting the sensitivity of the detection chip for different liquid detections, the CDC capacitor together with the fixed capacitance value capacitor together constituting the whole sensor sensitivity parameter.

In a further embodiment, the detection chip comprises a capacitance type liquid level detection chip, a single chip microcomputer, a capacitance type liquid level special chip and the like.

In further embodiments, the capacitive sensing sensor may be customized to the parameter requirements of different solutions to customize the capacitive sensing sensor.

In a further embodiment, one or more capacitive detection sensors may be connected in series with the pipe to detect the level height using the principle of a communicating vessel.

While the present invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

In the description of the present application, it is to be understood that the terms "upper", "lower", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and operate, and thus, should not be construed as limiting the present application. The word 'comprising' does not exclude the presence of elements or steps not listed in a claim. The word 'a' or 'an' preceding an element does not exclude the presence of a plurality of such elements. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage. Any reference signs in the claims shall not be construed as limiting the scope.

Claims

1. A pipeline fluid flow detection device, characterized by: including casing (1) and liquid flow detection subassembly, liquid flow detection subassembly includes electric capacity detection sensor (12), electric capacity detection sensor (12) are provided with detecting channel and fixed channel, detecting channel is connected with detecting probe (14) and is used for detecting the electric capacity change that liquid flows through the production, the capacitor of fixed capacitance value is connected to fixed channel, the inside of casing (1) is provided with detection chamber (4) that are used for with pipeline fluid intercommunication, detecting probe (14) pass casing (1) and get into in detection chamber (4).

2. The apparatus of claim 1, wherein: the capacitance detection sensor (12) is also connected with a CDC capacitor used for adjusting the sensitivity of the detection chip for different liquid detections.

3. The apparatus of claim 1, wherein: the detection probe (14) is a stainless steel probe.

4. The apparatus of claim 1, wherein: the shell (1) comprises a first shell (2) and a second shell (3), the detection cavity (4) is arranged in the first shell (2), and the liquid flow detection assembly is arranged on the second shell (3).

5. The apparatus of claim 4, wherein: the detection device is characterized in that a positioning groove (5) is formed in the first shell (2), the positioning groove (5) is communicated with the detection cavity (4) in a fluid mode, and a positioning block (6) matched with the positioning groove (5) is arranged on the second shell (3).

6. The apparatus of claim 1, wherein: the cross-sectional area of the detection cavity (4) is equal to the cross-sectional area of the pipeline.

7. The apparatus of claim 1, wherein: the shell (1) is provided with two interfaces (7) for connecting with a pipeline, and the interfaces (7) are communicated with the detection cavity (4) through fluid.

8. The apparatus of claim 7, wherein: the outer peripheral side of the interface (7) is provided with a connecting part (8), the connecting part (8) is arranged at one end, far away from the first shell (2), of the interface (7), and the cross section area of the connecting part (8) is gradually increased from one end, far away from the interface (7), to one end, close to the interface (7).

9. The apparatus of claim 4, wherein: the second shell (3) is provided with a bearing groove (10) for placing a pipeline.