Anti-interference signal shielding shell of vortex shedding flowmeter

Abstract

The utility model relates to the technical field of flow meters, and discloses an anti-interference signal shielding shell of a vortex shedding flow meter, which comprises two shell bodies which are oppositely arranged to form a square box shape, two end walls of the shell bodies are provided with pipe grooves which can be butted to form pipe holes, connecting edges are fixedly arranged at the edges of the opposite surfaces, and the connecting edges are fixed through a plurality of screws. The shell is composed of a stainless steel shell on the outer side and a copper shell on the inner side. And the supporting legs are detachably arranged below the shell. The vortex shedding flowmeter has the advantages that the vortex shedding flowmeter has a good signal shielding protection effect, and output data errors are prevented.

Description

Technical Field

[0001] This utility model relates to the field of flow meter technology, specifically to an anti-interference signal shielding shell for a vortex flow meter. Background Technology

[0002] A vortex flow meter is a velocity-type flow measurement instrument based on the Karman vortex street principle. When the fluid being measured flows through the sensor, a vortex generator (such as a cylindrical object) placed in the fluid will alternately generate regular vortices on both sides, forming a Karman vortex street. The frequency of the vortices is proportional to the fluid velocity. The sensor detects the vortex frequency, and after signal processing, it can display the instantaneous and cumulative flow rates of the fluid. It has advantages such as a wide measurement range, high accuracy, low pressure loss, convenient installation, and insensitivity to changes in fluid viscosity. It is widely used in industries such as petroleum, chemical, metallurgy, power, and water treatment, and can measure the flow rates of various fluids including steam, gas, and liquid.

[0003] Currently, vortex flowmeters have a key deficiency in industrial applications: the lack of signal shielding. This design shortcoming makes the internal signal transmission of the instrument highly susceptible to interference from complex external electromagnetic environments during operation. When there are strong electromagnetic sources such as high-power motors or high-frequency communication equipment nearby, external electrical signals can couple into the instrument through sensor circuitry, housing gaps, etc., causing noise superposition or waveform distortion in the detected vortex frequency signal. Utility Model Content

[0004] To solve the above-mentioned problems, this utility model proposes an anti-interference signal shielding shell for vortex flowmeters that provides good signal shielding protection and prevents output data errors.

[0005] To solve the above-mentioned technical problems, the technical solution proposed by this utility model is: a shielding shell for anti-interference signals of a vortex flowmeter, comprising:

[0006] The housing consists of two opposing shells forming a square box shape. The end walls of the housing are provided with slots that can be joined to form pipe holes. Connecting edges are fixed at the edges of the opposing surfaces. The connecting edges are fixed by several screws. The housing consists of an outer stainless steel shell and an inner copper shell.

[0007] The outriggers are detachably located at the bottom of the housing and are provided in several quantities.

[0008] Furthermore, the sidewall edge of the shell is a bevel, and several anti-collision strips are fixedly provided on the bevel.

[0009] Furthermore, a sealing strip is provided on the inner side of the tube groove, and the sealing strips on the inner sides of two opposite tube grooves can be joined together to form a sealing ring.

[0010] Furthermore, each of the two connecting edges has a protrusion and a groove that can fit into each other, and the screws are evenly distributed along the connecting edges.

[0011] Furthermore, the copper shell is fitted tightly against the inner wall of the stainless steel shell.

[0012] Furthermore, the support legs are positioned near the four corners of the square box formed by the housing, the bottom surface of the housing is provided with a support pad, the upper end of the support legs is fixed with a cross positioning frame, the support pad is provided with a cross positioning groove matching the cross positioning frame, the cross positioning frame is embedded in the cross positioning groove and fixed by several screws.

[0013] Compared with existing technologies, this invention has the following advantages: The housing adopts a double-layer structure of stainless steel and copper. The stainless steel shell is sturdy and durable, resisting external environmental influences, while the copper shell, with its excellent conductivity and magnetic permeability, effectively blocks external electromagnetic interference signals. The two layers are tightly bonded together to form a composite shielding layer, enhancing the ability to block external interference signals. The interlocking design of the protrusions and grooves at the connecting edges, combined with equidistantly distributed screws, improves connection accuracy and stability, ensuring a firm housing connection and preventing interference signals from intruding due to connection gaps. The sealing strips inside the pipe groove form a sealing ring, increasing the housing's sealing performance and further ensuring a good shielding effect, allowing the vortex flowmeter to operate in a stable environment, thereby reducing output data errors. Attached Figure Description

[0014] Figure 1 This is a three-dimensional representation of the present invention. Figure 1 ;

[0015] Figure 2 This is a three-dimensional representation of the present invention. Figure 2 ;

[0016] Figure 3 This is a top view of the present invention;

[0017] Figure 4 This is the front view of this utility model;

[0018] Figure 5 This is a side view of the present invention;

[0019] Figure 6 This is a schematic diagram of the structure of the connecting edge portion of this utility model;

[0020] Figure 7 This is a schematic diagram of the shell part of this utility model.

[0021] As shown in the figure: 1. Shell; 1.1. Stainless steel shell; 1.2. Copper shell; 2. Connecting edge; 3. Support leg; 4. Anti-collision strip; 5. Sealing strip; 6. Support pad; 7. Cross positioning frame. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings.

[0023] Combined with appendix Figure 1 Appendix Figure 2 An anti-interference signal shielding shell for a vortex flowmeter includes: a shell 1, two of which are arranged opposite each other to form a square box shape. The side walls of the shell 1 are inclined, and several anti-collision strips 4 are fixed on the inclined surfaces to buffer external impact forces, reduce impact damage to the shell 1, and extend the service life of the equipment.

[0024] Combined with appendix Figure 1 Appendix Figure 2 Appendix Figure 5 The shell 1 has grooves on both ends that can be connected to form pipe holes. The inner side of the groove is provided with sealing strips 5. The sealing strips 5 on the inner sides of two opposite grooves can be connected to form a sealing ring, which can increase the sealing performance of the shell and ensure a good shielding effect.

[0025] Combined with appendix Figure 3 Appendix Figure 4 Appendix Figure 6 A connecting edge 2 is fixed at the opposite edge. The connecting edge 2 is fixed by several screws. The two connecting edges 2 are respectively provided with a protrusion and a groove that can fit into each other on opposite sides. The screws are evenly distributed along the connecting edge 2, which can improve the connection accuracy and stability and make the connection between the two shells 1 more secure.

[0026] Combined with appendix Figure 7 The housing 1 consists of an outer stainless steel shell 1.1 and an inner copper shell 1.2. The copper shell 1.2 is tightly fitted to the inner wall of the stainless steel shell 1.1, which can optimize the electromagnetic shielding effect and enhance the ability to block external interference signals.

[0027] Combined with appendix Figure 2 Appendix Figure 4 Appendix Figure 5 The support legs 3 are detachably mounted below the housing 1 and are provided in several units. The support legs 3 are positioned near the four corners of the square box formed by the housing 1. The bottom surface of the housing 1 is provided with a support pad 6. The upper end of the support leg 3 is fixedly provided with a cross positioning frame 7. The support pad 6 is provided with a cross positioning groove that matches the cross positioning frame 7. The cross positioning frame 7 is embedded in the cross positioning groove and fixed by several screws. The cross positioning frame 7, in conjunction with the cross positioning groove, can accurately position and install the support leg 3, and facilitate disassembly and installation, thereby improving the support stability. The support pad 6 can also prevent the housing 1 from directly contacting the mounting surface and causing wear when the support leg 3 is not in use.

[0028] The specific implementation of this utility model is as follows: Align the grooves of the two housings 1 with the pipes on both sides of the flowmeter. The sealing strips 5 inside the grooves will adhere to the outer wall of the pipes, forming a sealing ring after mating, ensuring the internal sealing of the housings. Align the connecting edges 2 of the two housings 1, using the interlocking protrusions and grooves on the connecting edges 2 for precise positioning, and then fix them at equal intervals along the connecting edges 2 with screws, so that the double-layer housing composed of the stainless steel housing 1.1 and the copper housing 1.2 is tightly combined, forming a shielded space to enclose the flowmeter.

[0029] If the support legs 3 are not required, the support pad 6 can be directly placed in contact with the mounting surface to provide stable support for the housing 1. If the support structure is required, the cross positioning bracket 7 at the upper end of the support legs 3 can be embedded into the cross positioning groove of the support pad 6 on the bottom surface of the housing 1 and fixed with screws. The support legs 3 will then support the housing at the four corners of the square box, preventing it from directly contacting the mounting surface.

[0030] During use, the anti-collision strip 4 on the beveled edge of the side wall of the housing 1 can buffer external impacts, while the shielding layer formed by the copper housing 1.2 and the stainless steel housing 1.1 can continuously block external electromagnetic interference and ensure the stability of the flow meter signal.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly, for example, it can be a fixed connection, a detachable connection, or an integral connection; for those skilled in the art, the specific meaning of the above term in this utility model can be understood according to the specific circumstances.

[0032] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A vortex flowmeter anti-interference signal shielding housing, characterized in that, include: The shell (1) has two opposite sides, forming a square box shape. The end walls are provided with pipe grooves that can be connected to form pipe holes. The opposite edges are fixed with connecting edges (2). The connecting edges (2) are fixed by several screws. The shell (1) is composed of an outer stainless steel shell (1.1) and an inner copper shell (1.2). The support legs (3) are detachably located below the housing (1) and are provided in several places.

2. The anti-interference signal shielding housing for a vortex flowmeter according to claim 1, characterized in that: The side wall edge of the shell (1) is a slope, and several anti-collision strips (4) are fixed on the slope.

3. A vortex flowmeter anti-interference signal shielded housing according to claim 1, wherein: The inner side of the pipe groove is provided with a sealing strip (5), and the sealing strips (5) on the inner sides of two opposite pipe grooves can be joined together to form a sealing ring.

4. The anti-interference signal shielding housing for a vortex flowmeter according to claim 1, characterized in that: The two connecting edges (2) are respectively provided with protrusions and grooves that can fit into each other, and the screws are distributed at equal intervals along the connecting edges (2).

5. The vortex flowmeter anti-interference signal shielding housing of claim 1, wherein: The copper shell (1.2) is tightly fitted to the inner wall of the stainless steel shell (1.1).

6. The vortex flowmeter anti-interference signal shielding housing of claim 1, wherein: The support leg (3) is located near the four corners of the square box formed by the housing (1). The bottom surface of the housing (1) is provided with a support pad (6). The upper end of the support leg (3) is fixed with a cross positioning frame (7). The support pad (6) is provided with a cross positioning groove that matches the cross positioning frame (7). The cross positioning frame (7) is embedded in the cross positioning groove and fixed by several screws.

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