CN216283711U - Stable flow sensor - Google Patents

Abstract

The utility model relates to the technical field of flow sensors, in particular to a stable flow sensor which solves the defects in the prior art and comprises a valve body, wherein a flow detection channel is formed in the valve body, a rotor is rotatably arranged in the flow detection channel, a turbine is sleeved outside the rotor, a flow guide assembly is fixedly arranged on the inner wall of the flow detection channel and comprises flow guide plates which are annularly distributed in the flow detection channel; through the arrangement of the structures such as the extension part, the mounting seat, the connecting part and the like, the connection extension part for mounting the Hall element can be detached from the valve body, and the valve body can be replaced only after being damaged, so that the manufacturing cost is reduced.

Description

A stable flow sensor

technical field

The utility model relates to the technical field of flow sensors, in particular to a stable flow sensor.

Background technique

The liquid flow meter fluid flows through the sensor housing. Since the blades of the impeller have a certain angle with the flow direction, the impeller of the fluid causes the blades to have a rotating torque. After overcoming the friction torque and fluid resistance, the blades rotate. After the torque is balanced, the speed is stable, and the liquid flow meter Under certain conditions, the rotational speed is proportional to the flow rate. Since the blade is magnetically permeable, it is in the magnetic field of the signal detector (composed of permanent magnets and coils). The rotating blade cuts the magnetic field lines and periodically changes the magnetic flux of the coil. , so that the two ends of the coil induce an electrical pulse signal, which is amplified and shaped by the amplifier to form a continuous rectangular pulse wave with a certain amplitude, which can be transmitted to the display instrument to display the instantaneous flow or total amount of the fluid.

The flow sensor in the prior art has the following defects: First, the Hall element circuit used for sensing is integrated with the valve body. If the valve body is damaged, the entire device needs to be replaced, which increases the production cost; second, the internal Liquid flow rates are unstable, and fluids with chaotic flow conditions can make measurement data unstable or impossible to measure.

Utility model content

The purpose of the utility model is to propose a stable flow sensor in order to solve the shortcomings existing in the prior art.

In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

A stable flow sensor includes a valve body, a flow detection channel is opened in the inside of the valve body, a rotor is rotated inside the flow detection channel, a turbine is sleeved outside the rotor, and the inner wall of the flow detection channel is fixed A flow guide assembly is provided, and the flow guide assembly includes a guide fin, and the guide fin is annularly distributed inside the flow detection channel;

The top of the valve body is fixedly provided with a connecting portion, the connecting portion is screwed with a mounting seat, the bottom of the mounting seat is fixedly provided with an extension portion, the extension portion is located inside the connecting seat, and the extension portion is mounted with a hoist. Er element.

Preferably, the valve body and the connecting portion are integrally formed.

Preferably, a through groove communicated with the flow detection channel is formed in the inside of the connection seat, and the extension portion is embedded in the interior of the through groove.

Preferably, the outer side of the connecting seat and the inner wall of the mounting seat are respectively provided with corresponding external threads and internal threads.

Preferably, a screw cap is threadedly connected to the end of the mounting seat.

The beneficial effects of the present utility model are:

1. In the present utility model, through the arrangement of the extension part, the mounting seat and the connecting part, the connection extension part used to install the Hall element can be disassembled from the valve body. When the valve body is damaged, only the valve body can be replaced, reducing the manufacturing cost.

2. The design of the guide assembly in the present invention guides the fluid flowing into the flow detection channel, so that the fluid flows stably in the flow detection channel, thereby solving the problem of unstable or unmeasurable measurement data caused by chaotic fluid.

Description of drawings

Fig. 1 is the structural representation of a kind of stable flow sensor proposed by the utility model;

2 is a front view of a stable flow sensor proposed by the utility model;

FIG. 3 is a cross-sectional view of a stable flow sensor proposed by the utility model.

In the figure: 1 valve body, 11 connecting part, 12 external thread, 2 mounting seat, 21 extension part, 22 internal thread, 3 guide assembly, 4 rotor, 5 turbine.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example.

1-3, a stable flow sensor includes a valve body 1, a flow detection channel is opened inside the valve body 1, a rotor 4 is rotated inside the flow detection channel, and a turbine is sleeved outside the rotor 4 5, and the inner wall of the flow detection channel is fixedly provided with a flow guide assembly 3, the flow guide assembly 3 includes a flow guide sheet, and the flow guide sheet is annularly distributed inside the flow detection channel; the top of the valve body 1 is fixedly provided with a connection part 11 The connecting portion 11 is screwed with the mounting seat 2, the bottom of the mounting seat 2 is fixedly provided with an extending portion 21, the extending portion 21 is located inside the connecting seat, and the Hall element is mounted on the extending portion 21.

Among them, through the arrangement of the extension part 21, the mounting seat 2 and the connection part 11, the connection extension part 21 for installing the Hall element can be disassembled from the valve body 1. When the valve body 1 is damaged, only the valve body 1 can be repaired. The replacement reduces the manufacturing cost. Through the design of the diversion component 3, the fluid flowing into the flow detection channel is guided, so that the fluid flows stably in the flow detection channel, thereby solving the problem that the chaotic fluid makes the measurement data unstable or cannot be measured. question.

The valve body 1 and the connecting portion 11 are integrally formed. The inside of the connecting seat is provided with a through groove that communicates with the flow detection channel. The extension portion 21 is embedded in the inside of the through groove. Corresponding external threads 12 and internal threads 22, the ends of the mounting base 2 are threadedly connected with screw caps.

In this embodiment, when working, the valve body 1 is installed on the pipeline. After the fluid enters the inside of the flow detection channel, it flows stably under the action of the annular diversion component 3 to ensure that the fluid passing through the turbine 5 is stable, and the turbine 5 is subjected to fluid flow. The action drives the rotor 4 to rotate, and the turbine 5 is provided with five magnetic steels. After one rotation, the signal is amplified and output under the cooperation of the Hall element, so as to detect the flow;

Further, if the valve body 1 is damaged, personnel can remove the mounting seat 2 and the extension portion 21, and only replace the valve body 1, thereby reducing the production cost.

The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this. Equivalent replacement or modification of the new technical solution and its utility model concept shall be included within the protection scope of the present utility model.

Claims (5)

1. A stable flow sensor comprises a valve body (1), and is characterized in that a flow detection channel is formed in the valve body (1), a rotor (4) is rotatably arranged in the flow detection channel, a turbine (5) is sleeved outside the rotor (4), a flow guide assembly (3) is fixedly arranged on the inner wall of the flow detection channel, the flow guide assembly (3) comprises flow guide plates, and the flow guide plates are annularly distributed in the flow detection channel;

the top of valve body (1) is fixed and is provided with connecting portion (11), threaded connection has mount pad (2) on connecting portion (11), the fixed extension (21) that is provided with in bottom of mount pad (2), extension (21) are located the inside of connecting seat, and install hall element on extension (21).

2. A stabilized flow sensor according to claim 1, wherein the valve body (1) and the connecting portion (11) are of one-piece construction.

3. The stable flow sensor according to claim 1, wherein the connecting seat has a through groove formed therein and communicating with the flow sensing channel, and the extension portion (21) is embedded in the through groove.

4. A stabilized flow sensor according to claim 1, wherein the outer side of the connecting socket and the inner wall of the mounting socket (2) are provided with corresponding external (12) and internal (22) threads, respectively.

5. A stabilized flow sensor according to claim 1, wherein a screw cap is screwed onto the end of the mounting (2).

Images