CN213932668U

CN213932668U - Laminar flow element

Info

Publication number: CN213932668U
Application number: CN202022413722.3U
Authority: CN
Inventors: 张凯; 张铭哲
Original assignee: Shaanxi Yidu Intelligent Technology Co ltd
Current assignee: Shaanxi Yidu Intelligent Technology Co ltd
Priority date: 2020-10-27
Filing date: 2020-10-27
Publication date: 2021-08-10
Anticipated expiration: 2030-10-27

Abstract

The utility model discloses a laminar flow element, which comprises a shell and parallel layer runners, wherein the parallel layer runners are arranged inside the shell, and the two ends of the shell are provided with symmetrically distributed inlets and outlets for passing fluid; the parallel laminar flow channel comprises a plurality of parallel laminar sub-channels, each parallel laminar sub-channel comprises an upper lamination, a lower lamination and a support sheet, the upper lamination and the lower lamination are arranged in parallel, and the same support sheets are respectively arranged at two ends of the upper lamination and the lower lamination. The utility model provides a surface machining degree of difficulty is big in the current laminar flow component runner, and the roughness is higher, leads to the laminar flow instability of formation, the narrow technical problem of applicable flow range.

Description

Laminar flow element

Technical Field

The utility model relates to a flow measurement field, in particular to laminar flow component.

Background

The laminar flow element is an element for converting the flow state of fluid into laminar flow, and is mainly applied to the field of flow measurement.

At present, a mainstream laminar flow element is generally made of capillaries, fluid flows through the capillaries to form laminar flow, and then a plurality of capillaries are bundled to form the laminar flow element; or the corrugated plate and the flat plate are rolled to form the fluid, and the fluid flows through the gap between the corrugated plate and the flat plate to form laminar flow. For example, patent No. CN201220237073.9 discloses a capillary laminar flow element, which is formed by embedding a stainless steel thin tube in a cylindrical corrosion-resistant polymer material, and specifically includes: the inner diameter of the stainless steel thin tube is less than 1mm, the corrosion-resistant high polymer material is polytetrafluoroethylene, and the laminar flow element is pressed into the valve body and is in interference fit with the valve body.

The laminar flow element produced by the prior art is high in production cost, the machining difficulty of the inner surface of the flow channel of the conventional laminar flow element is high, the roughness is high, the formed laminar flow is unstable, and the applicable flow range is narrow.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a laminar flow component, it is big to solve the laminar flow component runner internal surface machining degree of difficulty among the prior art, and the roughness is higher, leads to the laminar flow instability of formation, the narrow technical problem of the flow range that is suitable for.

The utility model adopts the technical proposal that: a laminar flow element comprises a shell and parallel layer flow channels, wherein the parallel layer flow channels are arranged in the shell, and two ends of the shell are provided with an inlet and an outlet which are symmetrically distributed and used for fluid to pass through;

furthermore, the parallel layer runner comprises a plurality of parallel layer sub-runners, the parallel layer sub-runners comprise upper lamination sheets, lower lamination sheets and support sheets, the upper lamination sheets and the lower lamination sheets are arranged in parallel, and the same support sheets are respectively arranged at two ends of the upper lamination sheets and the lower lamination sheets;

furthermore, a plurality of parallel layer sub-runners are overlapped and stacked through fasteners to form a parallel layer runner;

further, the fastener is a bolt or an adhesive;

furthermore, a gap is formed between the parallel layer flow channel and the shell;

further, the gap between the upper lamination and the lower lamination is 0.02-3 mm.

Compared with the prior art, the laminar flow element provided by the technical scheme has the advantages that:

(1) the flow of the outflow laminar flow element is more uniform and stable;

(2) the flow is larger, which is beneficial to measuring larger flow;

(3) and the method is suitable for wider flow range.

Drawings

FIG. 1 is a perspective view of a laminar flow member;

FIG. 2 is a front cross-sectional view of a laminar flow member;

FIG. 3 is a schematic view of a parallel layer sub-channel of a laminar flow element.

Detailed Description

As shown in fig. 1-3, a laminar flow element comprises a shell 1 and parallel layer flow channels 2, wherein the parallel layer flow channels 2 are arranged in the shell 1, and the front end and the rear end of the shell 1 are provided with symmetrically distributed inlets and outlets for fluid to pass through;

the parallel layer runner 2 comprises a plurality of parallel layer sub-runners 3, the parallel layer sub-runners 3 comprise upper lamination sheets 31, lower lamination sheets 33 and support sheets 32, the upper lamination sheets 31 and the lower lamination sheets 33 are arranged in parallel, and the same support sheets 32 are respectively arranged at two ends of the upper lamination sheets 31 and the lower lamination sheets 33.

After the fluid enters the laminar flow element, the fluid is converted into laminar flow by the parallel layer sub-channels, and although the cross section of the parallel layer sub-channels is rectangular in this embodiment, the cross section similar to the conversion method is within the protection scope of this embodiment, for example, the cross section is an oval, a right triangle, or a general triangle. In addition, in order to make the laminar flow effect better, a flow stabilizer can be arranged in front of the laminar flow element. Obviously, the flow stabilizer is the existing mature technology, therefore, the device is added to fall into the protection scope of the embodiment.

Further, a plurality of parallel layer sub-flow channels 3 are overlapped and stacked to form a parallel layer flow channel 2 through fasteners, and the fasteners are bolts or adhesives. A more common way is to stack and reinforce a plurality of parallel layer sub-runners 3 by bolt fastening force through bolts penetrating from top to bottom. However, the effects of the present embodiment can also be achieved by other means, for example, stacking several parallel layers of the sub-flow channels 3 by an adhesive. For the ordinary skilled person, it is easy to think of the stacking effect achieved by increasing the pressure at the top and bottom ends of the several parallel layer sub-runners 3, and therefore, other similar methods are also within the scope of the present invention.

Furthermore, a gap is formed between the parallel layer flow channel 2 and the shell 1, and the gap between the upper lamination 31 and the lower lamination 33 is 0.02-3 mm. It should be noted that the gap is one of the innovative points of the present invention, and the experiment proves that a good effect can be obtained. The realization mode can be that the gasket is arranged at the upper end and the lower end, and the gap is arranged at all two sides, or the gasket is arranged at the left side and the right side, and the gap is arranged at the upper side and the lower side. In addition, the gap between upper laminations 31 and lower laminations 33 is limited because distances in this range of values are measured to obtain more desirable experimental data. But parallel layer sub-channels in other ranges of values may also achieve similar results.

(1) the flow of the outflow laminar flow element is more uniform and stable;

(2) the flow is larger, which is beneficial to measuring larger flow;

(3) and the method is suitable for wider flow range.

The above embodiments are only specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by 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. The laminar flow element is characterized by comprising a shell (1) and parallel layer flow channels (2), wherein the parallel layer flow channels (2) are arranged inside the shell (1), and the front end and the rear end of the shell (1) are provided with symmetrically distributed inlets and outlets for fluid to pass through.

2. The laminar flow element according to claim 1, characterized in that the parallel layer flow channel (2) comprises a plurality of parallel layer sub-flow channels (3), the parallel layer sub-flow channels (3) comprise an upper lamination (31), a lower lamination (33), and a support sheet (32), the upper lamination (31) and the lower lamination (33) are arranged in parallel, and the same support sheet (32) is arranged at both ends of the upper lamination (31) and the lower lamination (33).

3. The laminar flow element according to claim 2, characterized in that several of said parallel layer sub-channels (3) are stacked one upon the other by fasteners to form a parallel layer channel (2).

4. The laminar flow member according to claim 3, characterized in that said fasteners are bolts or adhesives.

5. The laminar flow element according to claim 1, characterized in that there is a gap between the parallel layer flow channels (2) and the housing (1).

6. The laminar flow element according to claim 2, characterized in that the gap between the upper lamination (31) and the lower lamination (33) is 0.02-3 mm.