Low-voltage-loss honeycomb rectifier

Abstract

The utility model discloses a low-pressure-loss honeycomb rectifier which comprises a plate-type rectifying disc, a gas guide pipe and a honeycomb current stabilizer, and fan-shaped rectifying holes are evenly distributed in the upper portion of the plate-type rectifying disc. And the fan-shaped rectifying holes are uniformly distributed to form a rectifying piece and a rectifying ring. The area formed by the fan-shaped rectifying holes is not smaller than 70% of the section of the gas guide pipe, and the wall thickness of the formed rectifying piece and the rectifying ring is not larger than 2 mm. And a gas flow mixing area is formed between the plate-type rectifying disc and the gas guide pipe. A honeycomb flow stabilizer guide groove is formed in the gas guide pipe; and the honeycomb rectifier is matched with the gas guide pipe along the honeycomb flow stabilizer guide groove. The honeycomb rectifier is installed at the inlet end of a flow meter or a pipeline, the honeycomb rectifier and the flow meter or the pipeline are installed and fixed through the rectifier fixing hole, the pressure loss is only 385 Pa under the working condition that the maximum volume flow is 160 m < 3 > / h under the condition of a bent pipe section, and the honeycomb rectifier has the characteristic of low pressure loss.

Description

Technical Field

[0001] The utility model relates to the technical field of gas flow control, in particular to a honeycomb rectifier with low pressure loss. Background Art

[0002] With the rapid development of ultrasonic flowmeter technology, ultrasonic flowmeters have been widely used in the measurement of natural gas, petroleum gas, coal gas and other gases. However, the measurement accuracy of ultrasonic flowmeters is easily affected by gas velocity distribution, vortex flow and gas turbulence intensity. However, rectifiers on the market are mostly divided into blade type and orifice type rectifiers. The blade type has the characteristics of low pressure loss, but because of the different rotation directions of the blades, it cannot be universal for left-intake pipes and right-intake pipes; and although the orifice type rectifier does not have much effect on the air intake direction of the pipeline, its structure greatly increases the resistance coefficient of the pipeline, resulting in a large pressure loss after the gas flows through.

[0003] CN217843128U discloses a combined rectifier, comprising: a first outer plate, a second outer plate and a sandwich plate; the sandwich plate is arranged between the first outer plate and the second outer plate; the connecting ring and the tube wall in the public document are an integral structure, and do not have a separate disassembly function; at the same time, the second outer plate and the sandwich plate are also fixed and attached to the tube wall, and do not have a separate disassembly function, and the sandwich plate is located in the middle area, which also occupies the regional space for airflow mixing.

[0004] To this end, the utility model provides a low-pressure-loss honeycomb rectifier, which can effectively solve the problems in the background technology. Utility Model Content

[0005] The utility model aims to provide a low-pressure-loss honeycomb rectifier, which has the characteristics of low pressure loss while having the effect of rectifying gas.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A low pressure loss honeycomb rectifier comprises a plate-type rectifying disk, a gas guide tube and a honeycomb flow stabilizer. The upper part of the plate-type rectifying disk is evenly provided with fan-shaped rectifying holes; the fan-shaped rectifying holes are evenly distributed to form rectifying sheets and rectifying rings.

[0008] Preferably, the fan-shaped rectifying holes are evenly distributed in multiple layers inside and outside at a certain angle.

[0009] Preferably, the area formed by the fan-shaped rectifying holes shall not be less than 70% of the cross section of the gas guide tube, and the wall thickness of the rectifying pieces and rectifying rings formed shall not be greater than 2 mm.

[0010] Preferably, an airflow mixing zone is formed between the plate-type rectifying disk and the gas guide tube.

[0011] Preferably, a honeycomb flow stabilizer guide groove is provided on the gas guide tube; and the honeycomb rectifier cooperates with the gas guide tube along the honeycomb flow stabilizer guide groove.

[0012] Preferably, a circular rectifying hole is provided in the center of the plate-type rectifying disk.

[0013] Preferably, the honeycomb flow stabilizer guide groove is located at the lower part of the inner side wall of the gas guide tube, and the height of the honeycomb flow stabilizer guide groove is adapted to the height of the honeycomb flow stabilizer.

[0014] Preferably, the plate-type rectifier disc is T-shaped; the upper outer ring portion of the plate-type rectifier disc is evenly distributed with four rectifier fixing holes for installation and fixing when cooperating with a flow meter or a pipeline.

[0015] Preferably, a ring groove is formed on the inner side wall of the lower end of the plate-type rectifier disk, and the diameter of the ring groove is adapted to the outer diameter of the gas guide tube; the upper end of the gas guide tube is inserted into the ring groove.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The utility model utilizes the rectifying pieces and rectifying rings formed by evenly distributed fan-shaped rectifying holes to divide, scatter and reorganize the gas;

[0018] The utility model honeycomb rectifier is installed on the flow meter or the inlet end of the pipeline, and is installed and fixed with the flow meter or the pipeline through the rectifier fixing hole. In the case of the curved pipe section, the maximum volume flow rate is 160m 3 The pressure loss is only 385Pa at an operating flow rate of 1.33 W / h. It can be determined that the rectifier has the characteristic of low pressure loss.

[0019] The utility model obtains a relatively ideal pressure loss by controlling the pass rate η of the rectifier. △ p, the pass rate η refers to the ratio of the rectifier opening area S to the pipe cross-sectional area A. The pass rate will affect the pressure difference of the flow field at both ends of the rectifier (i.e., pressure loss). △ p), in order to ensure that the pass rate η of the rectifier is within an ideal range, the pressure loss is controlled within an ideal range by controlling the pass rate of the plate rectifier disk (that is, the area formed by the fan-shaped rectifying holes shall not be less than 70% of the cross-section of the gas guide tube, and the wall thickness of the rectifier sheet and the rectifying ring formed shall not be greater than 2mm); at the same time, a honeycomb flow stabilizer is used at the rear end to rectify the gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Figure 1It is a schematic three-dimensional diagram of the overall structure of the utility model;

[0022] Figure 2 It is a schematic plan cross-sectional view of the overall structure of the utility model;

[0023] Figure 3 It is a three-dimensional cross-sectional view showing the overall structure of the utility model;

[0024] Figure 4 This is a schematic diagram of the structure of a plate-type rectifier disk of the utility model;

[0025] Figure 5 This is a schematic diagram of the gas guide tube structure of the utility model;

[0026] Figure 6 It is the pressure simulation cloud diagram of the utility model;

[0027] In the figure: 1-plate rectifier disc, 11-rectifier fixing hole, 12-fan-shaped rectifier hole, 13-rectifier sheet, 14-rectifier ring, 15-circular rectifier hole, 2-gas guide tube, 21-air flow mixing zone, 22-honeycomb stabilizer guide groove, 3-honeycomb stabilizer. DETAILED DESCRIPTION

[0028] In order to make the technical means for realizing the utility model, creative features, objectives and effects easy to understand, the utility model is further explained below in conjunction with specific diagrams. In the description of the utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, an integral connection or a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two components.

[0029] like Figures 1 to 5 As shown, a low pressure loss honeycomb rectifier comprises a plate-type rectifier disk 1, a gas guide tube 2, and a honeycomb flow stabilizer 3;

[0030] The gas guide tube 2 has a cylindrical body and a hollow through-hole interior; Figure 2 , Figure 3 , Figure 5 As shown, a honeycomb flow stabilizer guide groove 22 is provided on the inner side wall of the gas guide tube 2, and the honeycomb flow stabilizer guide groove 22 is located at the lower part of the inner side wall of the gas guide tube, and the height of the honeycomb flow stabilizer guide groove 22 is adapted to the height of the honeycomb flow stabilizer 3; the honeycomb flow stabilizer 3 cooperates with the gas guide tube 2 along the honeycomb flow stabilizer guide groove 22, plays a positioning role, and prevents personnel from failing to install the honeycomb flow stabilizer 3 in place during the assembly process, thereby affecting an installation and matching size of the overall rectifier;

[0031] The honeycomb flow stabilizer 3 is evenly distributed with rectifying holes with regular hexagonal cross-sections, and a plurality of rectifying holes form a honeycomb structure; the honeycomb flow stabilizer 3 is clamped and installed in the honeycomb flow stabilizer guide groove 22;

[0032] like Figure 1 , Figure 2 , Figure 3 As shown, the plate-type rectifying disc 1 is in a T-shape; the outer ring portion of the upper end of the plate-type rectifying disc 1 is evenly provided with four rectifier fixing holes 11 for installation and fixing when cooperating with a flow meter or a pipeline; a circle of annular grooves is provided on the inner side wall of the lower end of the plate-type rectifying disc 1, and the diameter of the annular grooves is adapted to the outer diameter of the gas guide tube 2; the upper end of the gas guide tube 2 is inserted into the annular grooves and connected to the plate-type rectifying disc 1; an airflow mixing area 21 is formed between the plate-type rectifying disc 1 and the gas guide tube 2, and the area serves to delay the gas before passing through the honeycomb rectifier 3, so that the vortex flow can be initially mixed and eliminated in the area;

[0033] like Figure 3 , Figure 4 As shown, a fan-shaped rectifying hole 12 is provided on the upper part of the plate rectifying disk 1; the fan-shaped rectifying holes 12 are evenly distributed in multiple layers inside and outside at a certain angle, so that the unstable gas is evenly divided after flowing through the area where it is located; the fan-shaped rectifying holes 12 shown in the drawings of this embodiment are 45 degrees and evenly distributed in two layers inside and outside;

[0034] The fan-shaped rectifying holes 12 are evenly distributed to form rectifying pieces 13 and rectifying rings 14, which play a role in dividing and breaking up the gas; the number of rectifying pieces 13 shown in the drawings of this embodiment is four, and both ends of each rectifying piece are connected to the inner wall of the plate-type rectifying disk 1; the number of rectifying rings 14 is eight, and each rectifying ring is connected to the side walls of two adjacent rectifying pieces;

[0035] The area formed by the fan-shaped rectifying hole 12 shall not be less than 70% of the cross-sectional area of ​​the gas guide tube 2, and the wall thickness of the rectifying piece 13 and the rectifying ring 14 formed shall not be greater than 2 mm, so as to ensure that the passing rate η of the rectifier is within an ideal range;

[0036] A circular rectifying hole 15 is provided in the center of the plate-type rectifying disk 1 to increase the passing rate of the rectifier;

[0037] like Figure 6 As shown in the figure, the rectifier is simulated using simulation software; the test conditions are a straight pipe section of 5 times the diameter of the rectifier front end and a bend in front of the straight pipe section of 5 times the diameter of the rectifier, and the pressure cloud diagram obtained by simulating the flow field of the same section under different volume flow rates. The simulation results show that the maximum volume flow rate is 160m 3 The pressure loss is only 385Pa at an operating flow rate of 1.33 W / h. It can be determined that the rectifier has the characteristic of low pressure loss.

[0038] like Figure 6 As shown, in actual use, the rectifier only needs to be installed at the inlet end of the flow meter and fixed to the flow meter or pipeline through the rectifier fixing hole 11.

[0039] The above contents are merely examples and explanations of the structure of the utility model. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the utility model.

Claims

1. A low pressure loss honeycomb rectifier, comprising a plate-type rectifier disk (1), a gas guide tube (2), and a honeycomb flow stabilizer (3), characterized in that: The upper part of the plate-type rectifying disk (1) is evenly provided with fan-shaped rectifying holes (12); the fan-shaped rectifying holes (12) are evenly distributed to form rectifying pieces (13) and rectifying rings (14).

2. A low-pressure-loss honeycomb rectifier according to claim 1, characterized in that: The fan-shaped rectifying holes (12) are evenly distributed in multiple layers inside and outside at a certain angle.

3. A low pressure loss honeycomb rectifier according to claim 1, characterized in that: The area formed by the fan-shaped rectifying holes (12) shall not be less than 70% of the cross section of the gas guide tube (2), and the wall thickness of the rectifying pieces (13) and rectifying rings (14) formed shall not be greater than 2 mm.

4. The low-pressure-loss honeycomb rectifier according to claim 1, characterized in that: An airflow mixing zone (21) is formed between the plate-type rectifying disk (1) and the gas guide tube (2).

5. The low-pressure-loss honeycomb rectifier according to claim 1, characterized in that: The gas guide tube (2) is provided with a honeycomb flow stabilizer guide groove (22); the honeycomb flow stabilizer (3) cooperates with the gas guide tube (2) along the honeycomb flow stabilizer guide groove (22).

6. The low-pressure-loss honeycomb rectifier according to claim 1, characterized in that: A circular rectifying hole (15) is provided at the center of the plate-type rectifying disk (1).

7. The low-pressure-loss honeycomb rectifier according to claim 5, characterized in that: The honeycomb flow stabilizer guide groove (22) is located at the lower part of the inner side wall of the gas guide tube, and the height of the honeycomb flow stabilizer guide groove (22) is adapted to the height of the honeycomb flow stabilizer (3).

8. The low-pressure-loss honeycomb rectifier according to claim 1, characterized in that: The plate-type rectifier disc (1) is in a T-shape; four rectifier fixing holes (11) are evenly distributed on the outer ring portion of the upper end of the plate-type rectifier disc (1) for installation and fixing when used in conjunction with a flow meter or a pipeline.

9. The low-pressure-loss honeycomb rectifier according to claim 1, characterized in that: The inner wall of the lower end of the plate-type rectifying disc (1) is provided with a ring groove, the diameter of which is adapted to the outer diameter of the gas guide tube (2); the upper end of the gas guide tube (2) is inserted into the ring groove.

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