High pressure resistant device for advanced orifice plate valve orifice plate seal structure

Abstract

The utility model discloses a senior orifice plate valve orifice plate sealing structure high pressure resistant device, include: main body structure, the main body structure includes two groups of connecting pipes, and the both ends of two groups of connecting pipes all are provided with flange, and two groups of connecting pipes are connected together through flange and fixed screw, still include the orifice plate for the throttling of the fluid of passing through connecting pipe, the orifice plate is located between two groups of flanges, and the both sides outer wall of two groups of connecting pipes all are provided with the pressure tapping hole for measuring differential pressure, and the lateral wall of two groups of flanges all are provided with the placing groove for putting orifice plate, and the lateral wall of flange surrounds and is provided with the limiting slot for the location of orifice plate, and the limiting slot is communicated in the placing groove, and the outer wall of orifice plate surrounds and is provided with the limiting block, and the limiting block and limiting slot correspond. Realize the multidirectional location and fixed of orifice plate, effectively prevent the displacement or vibration of orifice plate under the high pressure fluid impact, ensure the accuracy of flow measurement.

Description

Technical Field

[0001] This utility model relates to the technical field of orifice plate valve equipment, specifically to a high-pressure resistant device for an advanced orifice plate valve orifice plate sealing structure. Background Technology

[0002] An orifice valve is a device used to measure the flow rate of fluids in pipelines. It is typically installed on a pipeline and mainly consists of a valve body, orifice plate, valve stem, and seals. Its core component, the orifice plate, has one or more orifices of a specific size. When fluid flows through the orifice plate, a pressure difference is generated on both sides of the orifice plate. By measuring this pressure difference and combining it with the physical properties of the fluid and relevant pipeline parameters, the flow rate can be calculated using principles such as Bernoulli's equation. The orifice valve also has shut-off and throttling functions. The position of the orifice plate can be controlled by operating the valve stem and other components to meet different flow measurement and pipeline control needs. It is widely used in fluid flow measurement and control in industries such as petroleum, chemical, metallurgy, and power.

[0003] A search revealed Chinese patent application CN201610445264.7, which discloses an orifice plate flow meter. The orifice plate includes connecting pipes, a straight pipe section, a sensor, two sealing rings, and two pressure tapping pipes. The two connecting pipes are bolted together, with one end connected to the straight pipe section. Sealing rings are located on the end faces of the two connecting pipes. The orifice plate is positioned between the two sealing rings and has multiple nozzles. An air passage communicating with the interior of the connecting pipe is located on one side of the sealing rings. One end of the pressure tapping pipe communicates with the air passage, and the other end communicates with the sensor. A buffer groove communicating with the interior of the connecting pipe is located on the inner wall of the other side of the sealing rings. The nozzles consist of a decreasing inner diameter section, a straight section, and an increasing inner diameter section connected sequentially along the fluid flow direction. Flange connections are used between the connecting pipes and between the connecting pipe and the straight pipe section, greatly improving the practicality of the connecting pipe in measurement processes with different types of sensors and facilitating quick installation and disassembly by operators.

[0004] The above technical solution is similar to the traditional orifice plate valve (orifice plate flow meter), which does not securely fix the orifice plate. Under the impact of high-pressure fluid, the orifice plate may shift or vibrate, affecting the accuracy of flow measurement. Therefore, we need to propose an advanced orifice plate valve orifice plate sealing structure high-pressure resistant device. Utility Model Content

[0005] The purpose of this utility model is to provide a high-pressure resistant device for an orifice plate sealing structure of an advanced orifice plate valve. By opening a placement groove and a limiting groove on the flange side wall, and aligning the limiting block on the outer wall of the orifice plate with the limiting groove, and cooperating with the fixing screws passing through the through holes on the limiting block and tightening them with the screw holes on the flange, the orifice plate is limited and fixed in multiple directions. This effectively prevents the orifice plate from displacing or vibrating under the impact of high-pressure fluid, ensuring the accuracy of flow measurement, and solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A high-pressure resistant device for an advanced orifice plate valve orifice plate sealing structure, comprising:

[0008] Main structure;

[0009] The main structure includes two sets of connecting pipes, each set of connecting pipes having a flange at one end, and the two sets of connecting pipes being connected together by the flange and fixing screws.

[0010] It also includes orifice plates for throttling fluid passing through the connecting pipe;

[0011] The orifice plate is positioned between two sets of flanges, and pressure tapping channels for measuring differential pressure are provided on the outer walls of both sets of connecting pipes. Placement grooves for inserting the orifice plate are provided on the side walls of both sets of flanges, and limiting grooves for limiting the orifice plate are provided around the side walls of the flanges. The limiting grooves are connected to the placement grooves, and limiting blocks are provided around the outer walls of the orifice plate, with the limiting blocks corresponding to the limiting grooves.

[0012] Preferably, the flange is provided with screw holes around its perimeter for screws to pass through.

[0013] Preferably, the screw hole is connected to the limiting groove, and the limiting block has a through hole for the fixing screw to pass through.

[0014] Preferably, sealing rings are also provided on the two side walls of the perforated plate around the perimeter of the channel. The sealing rings are annular structures integrally molded from polyurethane rubber.

[0015] Preferably, the inner wall of the placement groove is provided with a sealing groove in an annular shape, and the sealing groove and the sealing ring correspond to each other.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This invention achieves multi-directional limiting and fixing of the orifice plate by opening placement grooves and limiting grooves on the flange sidewall, and aligning the limiting blocks on the outer wall of the orifice plate with the limiting grooves, and tightening the fixing screws through the through holes on the limiting blocks and the screw holes on the flange. This effectively prevents the orifice plate from shifting or vibrating under the impact of high-pressure fluid, and ensures the accuracy of flow measurement. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is an exploded view of the present invention;

[0020] Figure 3 This is a schematic diagram of the perforated plate of this utility model;

[0021] Figure 4 This is a schematic diagram of the flange of this utility model.

[0022] In the diagram: 1. Connecting pipe; 2. Flange; 3. Pressure tapping channel; 4. Orifice plate; 5. Placement groove; 6. Limiting groove; 7. Limiting block; 8. Through hole; 9. Screw hole; 10. Sealing ring; 11. Sealing groove. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-4 This utility model provides a technical solution:

[0025] A high-pressure resistant device with an advanced orifice plate 4 valve orifice plate 4 sealing structure includes: a main structure; the main structure includes two sets of connecting pipes 1, each set of connecting pipes 1 having a flange 2 at one end, and the two sets of connecting pipes 1 being connected together by the flange 2 and fixing screws.

[0026] The main structure consists of two sets of connecting pipes 1 and flanges 2 at the ends. The two sets of connecting pipes 1 are connected by fixing screws passing through the flanges 2. The working principle is to use the tightening force of the screws to tightly connect the two sets of connecting pipes 1, forming a complete pipeline connection structure. Its function is to establish the basic framework of the device, providing a stable foundation for the subsequent installation of components such as the orifice plate 4, ensuring that the entire device can be smoothly connected to the pipeline system, and guaranteeing the normal transmission of fluid within the connecting pipes 1.

[0027] It also includes an orifice plate 4 for throttling the fluid passing through the connecting pipe 1; the orifice plate 4 is disposed between the two sets of flanges, and pressure tapping channels 3 for measuring differential pressure are provided on the upper outer walls of the two sets of connecting pipes 1. Placement grooves 5 for placing the orifice plate 4 are provided on the side walls of the two sets of flanges, and limiting grooves 6 for limiting the orifice plate 4 are provided around the side walls of the flanges. The limiting grooves 6 are connected to the placement grooves 5, and limiting blocks 7 are provided around the outer walls of the orifice plate 4. The limiting blocks 7 and the limiting grooves 6 correspond to each other.

[0028] The orifice plate 4 is located between two sets of flanges, and fluid flows through the orifice plate 4 to achieve throttling. During installation, the orifice plate 4 is first placed into the placement groove 5, rotated to align the limiting block 7 with the limiting groove 6, and then the fixing screws are passed through the through hole 8 of the limiting block 7 and the screw hole 9 of the flange 2 in sequence and tightened. The pressure tapping channel 3 is used to measure the pressure difference on both sides of the orifice plate 4 to calculate the flow rate. The working principle is that the limiting groove 6 and the limiting block 7 cooperate to achieve circumferential limiting of the orifice plate 4, and the screws are tightened to achieve axial fixation. The flow rate is calculated using the pressure difference measurement principle. Its function is to fix the orifice plate 4 in multiple dimensions to prevent it from shifting or vibrating under the impact of high-pressure fluid, ensuring the accuracy of flow measurement. The pressure tapping channel 3 provides a key data source for flow calculation.

[0029] In addition, please see Figures 2-4 :

[0030] The flange 2 has screw holes 9 arranged around its perimeter for screws to pass through. The screw holes 9 are connected to the limiting groove 6, and the limiting block 7 has through holes 8 for the screws to pass through.

[0031] When the two sets of flanges are fixed with fixing screws, the fixing screws are inserted into the limiting hole through the screw hole 9 and through the through hole 8 on the limiting block 7, and then out through the screw hole 9 of the flange 2 on the other side. Then they are locked with nuts. This design allows the two sets of flanges 2 to be connected to each other. On the one hand, the limiting groove 6 and the limiting block 7 cooperate to position the orifice plate 4, preventing the orifice plate 4 from shifting or rotating under high pressure. On the other hand, the cooperation of the fixing screws and the limiting block 7 allows the orifice plate 4 to be further fixed and positioned.

[0032] For further details, please refer to Figures 2-4 :

[0033] Sealing rings 10 are also provided on the two side walls of the orifice plate 4 around the orifice. The sealing rings 10 are annular structures integrally molded from polyurethane rubber. The inner wall of the placement groove 5 is provided with a sealing groove 11 in annular shape, and the sealing groove 11 corresponds to the sealing ring 10.

[0034] The polyurethane rubber sealing rings 10 surrounding the orifice plates 4 on both side walls fit into the sealing grooves 11 after the orifice plate 4 is inserted into the placement grooves 5. Due to the elasticity of the polyurethane rubber, under the action of high-pressure fluid, the sealing rings 10 deform and fill the tiny gaps between themselves and the sealing grooves 11. The working principle is based on the elastic sealing properties of rubber. Its function is to enhance the sealing performance between the orifice plate 4 and the flange, prevent fluid leakage, and avoid problems such as inaccurate measurement data, safety accidents, and environmental pollution caused by leakage.

[0035] Moreover, the rubber sealing ring 10 can play a certain buffering role when the orifice plate 4 is subjected to high pressure impact, absorb the impact force, reduce vibration, and ensure the accuracy of flow measurement.

[0036] In the description, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] In the description, unless otherwise expressly specified and limited, the terms "installation", "setup", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise expressly limited, those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0038] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A high-pressure resistant device for an advanced orifice plate (4) valve orifice plate (4) sealing structure, characterized in that, include: Main structure; The main structure includes two sets of connecting pipes (1), one end of each set of connecting pipes (1) is provided with a flange (2), and the two sets of connecting pipes (1) are connected together by the flange (2) and fixing screws; It also includes an orifice plate (4) for throttling the fluid passing through the connecting pipe (1); The orifice plate (4) is disposed between the two sets of flanges, and pressure tapping channels (3) for measuring differential pressure are provided on the upper outer walls of the two sets of connecting pipes (1). Placement grooves (5) for placing the orifice plate (4) are provided on the side walls of the two sets of flanges. Limiting grooves (6) for limiting the orifice plate (4) are provided around the side walls of the flanges. The limiting grooves (6) are connected to the placement grooves (5), and limiting blocks (7) are provided around the outer walls of the orifice plate (4). The limiting blocks (7) and the limiting grooves (6) correspond to each other.

2. The high-pressure resistant device for the sealing structure of the advanced orifice plate (4) valve orifice plate (4) according to claim 1, characterized in that: The flange (2) is provided with screw holes (9) around its perimeter, which are used to fix screws through.

3. The high-pressure resistant device for the sealing structure of the advanced orifice plate (4) valve orifice plate (4) according to claim 2, characterized in that: The screw hole (9) is connected to the limiting groove (6), and the limiting block (7) has a through hole (8) for the fixing screw to pass through.

4. The high-pressure resistant device for the sealing structure of the advanced orifice plate (4) valve orifice plate (4) according to claim 1, characterized in that: On both sides of the perforated plate (4), sealing rings (10) are provided around the perimeter of the channel. The sealing rings (10) are annular structures integrally molded from polyurethane rubber.

5. A high-pressure resistant device for an advanced orifice plate (4) valve orifice plate (4) sealing structure according to claim 4, characterized in that: The inner wall of the placement groove (5) is provided with a sealing groove (11) in an annular shape, and the sealing groove (11) and the sealing ring (10) correspond to each other.

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