Real-time observation and online cleaning device for flow-regulating and pressure-regulating valve

Abstract

The application relates to a real-time observation and online cleaning device for a flow-regulating and pressure-regulating valve, which comprises a flow-regulating and pressure-regulating valve body, four valve body conical cleaning holes which are uniformly distributed along the circumference of an outlet end, a support rib plate displacement groove, a transparent organic glass cover plate and connecting bolts. The valve body conical cleaning hole axis is arranged at a 45-degree angle with the valve body center line, and an annular sealing groove is arranged on the hole opening. The transparent organic glass cover plate is a circular plate structure, the outer edge size is matched with the valve body conical cleaning hole opening, and an annular embedding groove for embedding an O-shaped sealing ring is arranged on the sealing surface. The connecting bolts tightly seal the transparent organic glass cover plate on the valve body conical cleaning hole opening. The support rib plate displacement groove is arranged on the support rib plate inside the flow-regulating and pressure-regulating valve body, the outline size width is 150mm-200mm, the height is 80mm-100mm, and the opening direction is towards the valve body internal chamber. The device realizes real-time observation and convenient cleaning of the internal state of the flow-regulating and pressure-regulating valve.

Description

Technical Field

[0001] This utility model belongs to the field of valve technology, specifically a real-time online cleaning device for flow regulating and pressure regulating valves. Background Technology

[0002] Flow and pressure regulating valves are widely used in industrial fields, and the need for internal cleaning and real-time monitoring is becoming increasingly important. Currently available flow and pressure regulating valves typically require shutdown and disassembly to clean internal foreign objects, failing to meet the requirements for real-time monitoring and online cleaning. This not only increases maintenance costs but also reduces equipment operating efficiency.

[0003] A search revealed a cleaning device for the pressure regulating valve seat of an underground pressure regulating station, published in CN111706683B. This device uses a sleeve linkage mechanism and an annular cleaning assembly to remove tar and corrosive gas crystals from the pressure regulating valve seat. While this device can reduce deposits on the valve seat and extend maintenance intervals, its cleaning process relies on a mechanical drive structure, making real-time monitoring impossible. Furthermore, the cleaning device requires direct contact with the valve seat, potentially leading to incomplete cleaning of certain blind spots and making it unsuitable for online cleaning under complex operating conditions.

[0004] A search revealed a pressure regulating valve with publication number CN111594620B that facilitates the cleaning of residue from the valve seat. This design also employs a sleeve-driven annular cleaning assembly, where the cleaning blade rotates along a fixed axis via a sliding sleeve to remove residue from the valve seat. While this device reduces the probability of valve mis-closing and extends maintenance intervals, it lacks real-time monitoring capabilities, making it impossible to dynamically assess the cleaning effect inside the valve. Furthermore, the cleaning range is limited by the design of the annular cleaning assembly, limiting its effectiveness in cleaning complex shapes or small, hard-to-reach areas. The cleaning operation requires specific conditions and cannot fully realize online cleaning functionality.

[0005] The aforementioned problems indicate that current flow and pressure regulating valve cleaning devices on the market still have significant shortcomings in achieving real-time observation and online cleaning. Therefore, this utility model aims to provide a real-time observation and online cleaning device for flow and pressure regulating valves to overcome the deficiencies of the prior art. Utility Model Content

[0006] This invention provides a real-time online cleaning device for flow and pressure regulating valves, which solves the technical problem in the prior art that flow and pressure regulating valves cannot be cleaned online due to the lack of a real-time observation structure and require shutdown for disassembly, resulting in low maintenance efficiency.

[0007] To address the aforementioned problems, this utility model employs a real-time monitoring online cleaning device for flow and pressure regulating valves, comprising a flow and pressure regulating valve body, conical cleaning holes in the valve body, a support rib groove, a transparent acrylic cover plate, and connecting bolts. Four conical cleaning holes are evenly distributed circumferentially along the outlet end of the flow and pressure regulating valve body, with the axis of each hole arranged at a 45° angle to the valve body's centerline. An annular sealing groove is provided at the opening of each conical cleaning hole. The transparent acrylic cover plate is a circular plate structure, its outer edge dimensions matching the opening of the conical cleaning holes in the valve body. An annular groove is formed on the sealing surface of the transparent acrylic cover plate. A sealing O-ring is embedded in the annular groove. The connecting bolts pass through a through hole in the transparent acrylic cover plate and engage with a threaded hole at the opening of the conical cleaning holes in the valve body, pressing and sealing the transparent acrylic cover plate tightly against the opening of the conical cleaning holes in the valve body. The support rib clearance groove is formed on the support rib inside the body of the flow regulating and pressure regulating valve. The width of the support rib clearance groove is 150mm-200mm and the height is 80mm-100mm, and its opening faces the internal cavity of the valve body.

[0008] The four conical cleaning holes on the valve body correspond to four different chamber areas inside the main body of the flow and pressure regulating valve. The conical structure of the cleaning holes ensures that the orifice size is larger than the bottom size, forming a guide structure that facilitates manual operation. The transparent acrylic cover is made of high-transmittance acrylic glass, and its thickness meets the strength requirements under the pressure of the medium inside the valve body. The sealing O-ring has a circular cross-section and is made of elastic rubber resistant to media corrosion. Multiple connecting bolts are evenly distributed along the circumference of the transparent acrylic cover. The edges of the support rib groove are rounded, and the groove depth is greater than half the thickness of the support rib.

[0009] The main body of the flow and pressure regulating valve has multiple radially arranged support ribs. A clearance groove is formed on one of the support ribs, located between two conical cleaning holes in the valve body. The width of the clearance groove is 150mm-200mm, and the height is 80mm-100mm. The end face of the conical cleaning hole in the valve body is a precision-machined flat surface, and its flatness meets the sealing requirements. The outer surface of the transparent acrylic cover is flat or slightly convex. The head of the connecting bolt has an internal hexagonal groove. The outer diameter of the sealing O-ring in its free state is larger than the bottom diameter of the annular groove.

[0010] The bottom of the support rib groove has a rounded transition structure. The main body of the flow regulating and pressure regulating valve is provided with a mounting boss, and the valve body conical cleaning hole is opened on this mounting boss. The thickness of the central area of ​​the transparent plexiglass cover is 12mm-15mm, and the thickness of the edge area is 8mm-10mm. The thread length of the connecting bolt is greater than the sum of the thickness of the transparent plexiglass cover and the thickness of the valve body conical cleaning hole opening.

[0011] The four conical cleaning holes on the valve body are positioned to cover the entire visible area of ​​the internal regulating device of the flow and pressure regulating valve body. The light transmittance of the transparent acrylic cover is greater than 90%. The compression of the sealing O-ring is 20%-30% of its free height. The opening edge of the support rib groove is chamfered. The taper of the conical cleaning holes on the valve body is 1:10. The outer diameter of the transparent acrylic cover is 5 mm to 10 mm larger than the diameter of the conical cleaning holes on the valve body.

[0012] The main body of the flow regulating and pressure regulating valve is made of cast iron or stainless steel. The impact resistance of the transparent plexiglass cover is greater than 15 kJ / m. 2 The sealing O-ring has a temperature resistance range of -20℃ to 120℃. The connecting bolt has a strength grade of 8.8. The surface roughness of the support rib relief groove is less than 3.2µm.

[0013] The beneficial effects of this utility model are:

[0014] This utility model discloses a real-time online cleaning device for flow and pressure regulating valves. By setting four conical cleaning holes evenly distributed in a 45-degree direction on the valve body and a transparent plexiglass cover, it realizes real-time observation of the internal state of the flow and pressure regulating valve. The design of the support rib plate and relief groove makes all chambers easy to clean. The entire device has a reasonable structure, clear observation, and convenient cleaning, which significantly improves the maintenance efficiency and operational reliability of flow and pressure regulating valves. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the online cleaning device for the flow regulating and pressure regulating valve of this utility model;

[0016] Figure 2 This is a schematic diagram of the connection structure between the transparent plexiglass cover and the conical cleaning hole of the valve body according to an embodiment of this application;

[0017] Figure 3 This is a schematic diagram of the internal support rib structure of the online cleaning device for the flow regulating and pressure regulating valve of this utility model;

[0018] Explanation of reference numerals in the attached drawings: 1. Flow regulating and pressure regulating valve body; 2. Valve body conical cleaning hole; 3. Support rib relief groove; 4. Transparent plexiglass cover plate; 5. Connecting bolt; 6. Annular sealing groove; 7. Annular recess; 8. Sealing O-ring; 9. Support rib. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Those skilled in the art should understand that the embodiments described below are only some, not all, of the embodiments of the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0020] Please see Figures 1 to 3 As shown, this utility model provides a real-time observation and online cleaning device for flow and pressure regulating valves. The core structure of this device is designed around the main body 1 of the flow and pressure regulating valve, enabling real-time observation and cleaning of the valve body's interior without disassembling the valve, thereby significantly improving maintenance efficiency and reducing downtime costs.

[0021] The online cleaning device for the flow regulating and pressure regulating valve of this utility model includes a flow regulating and pressure regulating valve body 1, four valve body conical cleaning holes 2, at least one support rib relief groove 3, four transparent plexiglass cover plates 4, and several connecting bolts 5.

[0022] The main body 1 of the flow regulating and pressure regulating valve serves as the load-bearing structure of the entire device. Its overall external contour can be designed as cylindrical, box-shaped, or other regular or irregular shapes according to actual application requirements, while its interior forms a complex flow channel and chamber structure. The main body 1 of the flow regulating and pressure regulating valve is typically integrally cast from cast iron or stainless steel to ensure sufficient mechanical strength, pressure resistance, and corrosion resistance during long-term operation. Especially when handling corrosive media, the stainless steel main body 1 provides superior protection. The outer edge of the outlet end of the main body 1 has multiple bolt holes for flange connection to external piping systems, ensuring fluid sealing. Several mounting bosses are evenly distributed and protrude from the flange plane along the circumference of the outlet of the main body 1. Each mounting boss is cylindrical or truncated conical, and its outer surface is finely machined to ensure precise installation with external components.

[0023] Four conical cleaning holes 2 are provided on the valve body to ensure effective observation and cleaning of different chamber areas inside the main body 1 of the flow regulating valve. These four conical cleaning holes 2 are evenly distributed along the circumference of the outlet end of the main body 1 of the flow regulating valve, and each conical cleaning hole 2 is located inside a mounting boss on the main body 1. The axis of each conical cleaning hole 2 forms a 45-degree angle with the centerline of the main body 1 of the flow regulating valve. This inclined arrangement allows cleaning tools and observation equipment to enter the valve body at a more suitable angle, avoiding interference with the internal structure of the valve body, and expanding the viewing angle for observation and cleaning. The conical cleaning hole 2 has a conical structure, with an orifice diameter smaller than the bottom diameter, and a taper ratio of 1:10. This conical structure forms a relatively wide entrance at the orifice, gradually narrowing towards the inside of the valve body, creating a guiding structure that facilitates the entry and exit of hands or professional tools, significantly improving the convenience of cleaning operations. The inner wall surface of the valve body conical cleaning hole 2 is finely smoothed, with a surface roughness of less than 3.2 micrometers, to reduce resistance during media adhesion and cleaning. At the opening of the valve body conical cleaning hole 2, i.e., the end in contact with the external environment, an annular sealing groove 6 is milled or machined. This annular sealing groove 6 has a rectangular cross-section, and its depth and width are precisely designed to accommodate the corresponding sealing structure. The end face of the valve body conical cleaning hole 2 opening is a finely machined plane, with its flatness controlled within the micrometer range to meet stringent sealing requirements and ensure the subsequent compression and sealing effect of the transparent acrylic cover plate 4. Each valve body conical cleaning hole 2 has multiple threaded holes evenly distributed circumferentially inside the opening; these threaded holes are used for threaded engagement with the connecting bolts 5.

[0024] The transparent acrylic cover 4 is a circular plate structure made of high-transmittance acrylic glass, such as polymethyl methacrylate (PMMA) or polycarbonate (PC), ensuring excellent light transmission performance with a transmittance greater than 90%, allowing clear observation of the internal structure and medium state of the valve body. The outer edge dimension of the transparent acrylic cover 4 precisely matches the orifice size of the conical cleaning hole 2 in the valve body. Specifically, the outer diameter of the transparent acrylic cover 4 is five to ten millimeters larger than the orifice diameter of the conical cleaning hole 2 in the valve body, ensuring complete coverage and effective sealing of the orifice area. The thickness of the transparent acrylic cover 4 has undergone rigorous mechanical calculations to meet the strength requirements under the pressure of the medium inside the valve body, with an impact strength greater than 15 kJ / m. 2To ensure structural integrity and safety under high-pressure fluid impact, the transparent plexiglass cover 4 has a central region thickness greater than its edge region thickness, forming a slightly convex or flat outer surface to resist deformation caused by medium pressure. An annular groove 7 is formed between the contact surface of the transparent plexiglass cover 4 and the valve body conical cleaning hole 2, i.e., on the sealing surface of the transparent plexiglass cover 4. This annular groove 7 has a rectangular cross-section, and its bottom diameter is slightly smaller than the outer diameter of the sealing O-ring 8 in its free state, to ensure that the sealing O-ring 8 can be reliably installed and pre-compressed.

[0025] A sealing O-ring 8 is precisely fitted into the annular groove 7. The sealing O-ring 8 has a circular cross-section and is made of media-resistant elastic rubber, such as nitrile rubber (NBR), fluororubber (FKM), or ethylene propylene rubber (EPDM), to adapt to the corrosiveness of different media. The sealing O-ring 8 has a wide temperature range of -20℃ to 120℃, ensuring that it maintains good sealing performance and elasticity over a wide range of valve operating temperatures. In its free state, the outer diameter of the sealing O-ring 8 is larger than the bottom diameter of the annular groove 7, so that it can be tightly embedded in the annular groove 7 during installation. When the transparent plexiglass cover 4 is tightened by the connecting bolts 5, the compression of the sealing O-ring 8 is 20%-30% of its free height. This compression ensures that the sealing O-ring 8 can fully fill the gap between the annular sealing groove 6 and the annular groove 7 after deformation, and form a reliable airtight and liquid-tight connection between the transparent plexiglass cover 4 and the orifice of the valve body conical cleaning hole 2.

[0026] The connecting bolts 5 are numerous and evenly distributed along the circumference of the transparent plexiglass cover plate 4. Each connecting bolt 5 passes through a corresponding through hole on the transparent plexiglass cover plate 4 and engages with the threaded hole at the opening of the valve body conical cleaning hole 2. The head of the connecting bolt 5 has an internal hexagonal groove, facilitating installation and removal using an internal hexagonal wrench, ensuring uniformity and reliability of the applied torque. The connecting bolt 5 has a strength grade of 8.8, ensuring that it can withstand sufficient preload during tightening without plastic deformation or breakage, thereby firmly and evenly pressing and sealing the transparent plexiglass cover plate 4 onto the opening of the valve body conical cleaning hole 2. The thread length of the connecting bolt 5 is precisely calculated to be greater than the sum of the thickness of the transparent plexiglass cover plate 4 and the thickness of the valve body conical cleaning hole 2 opening, ensuring that the bolt can completely pass through the through hole of the transparent plexiglass cover plate 4 and has sufficient thread length to fully engage with the threaded hole of the valve body conical cleaning hole 2, forming a stable and reliable connection.

[0027] The internal chamber of the main body 1 of the flow regulating and pressure regulating valve is provided with multiple radially arranged support ribs 9. These support ribs 9 have a plate-like structure and are distributed radially along the center line of the valve body. They are used to enhance the strength and rigidity of the internal structure of the valve body, resist deformation caused by medium pressure, and provide stable support for the regulating mechanism inside the valve. At least one of the support ribs 9 has a support rib clearance groove 3. The support rib 9 with the support rib clearance groove 3 is specifically arranged in the area between the two valve body conical cleaning holes 2, so that when cleaning is performed by inserting tools or hands through the cleaning holes 2, the support rib 9 can be extended to reach a deeper area inside the valve body. The support rib recess 3 has a width of 150mm-200mm and a height of 80mm-100mm, allowing the operator's hand or a special cleaning tool to pass smoothly through, achieving effective cleaning of the valve body's internal chamber. The cleaning tool includes a flexible metal rod made of 304 stainless steel with a diameter of 8mm-12mm; the end is detachably connected to a nylon brush head or rubber scraper with a brush head diameter of 20mm-30mm; the rod is 500mm-700mm long and connects to the end assembly via a threaded interface. The opening of the support rib recess 3 faces the internal chamber of the valve body, forming an easily accessible passage. The edges of the support rib recess 3, especially those areas that may come into contact with the operator's hand, are rounded to prevent scratches to the operator or damage to the cleaning tool during cleaning, improving operational safety. The depth of the support rib recess 3 is designed to be greater than half the thickness of the support rib 9, ensuring that the recess 3 provides sufficient space for the cleaning tool or hand to pass over the support rib 9. The bottom of the support rib recess 3 has a rounded transition structure, avoiding stress concentration that may be caused by sharp right angles and further preventing damage to cleaning tools or hands. The opening edge of the support rib recess 3 is chamfered to further eliminate sharp angles, making it easier to enter and remove cleaning tools or hands. All surfaces of the support rib recess 3, including the groove walls and bottom, are finely machined with a surface roughness of less than 3.2 micrometers to reduce dirt adhesion and facilitate cleaning.

[0028] With the above structure, when cleaning the interior of the flow regulating and pressure regulating valve body 1 is required, the operator can unscrew the connecting bolts 5, remove the transparent plexiglass cover 4, and then insert their hand or a special cleaning tool through the valve body conical cleaning hole 2. The cleaning tool includes a bendable metal rod made of 304 stainless steel with a diameter of 8mm-12mm; the end is detachably connected to a nylon brush head or rubber scraper with a brush head diameter of 20mm-30mm; the rod length is 500mm-700mm, and it is connected to the end assembly via a threaded interface. Due to the conical structure and inclined arrangement of the valve body conical cleaning hole 2, as well as the wide design of the support rib clearance groove 3, the operator can easily access each chamber area inside the valve body. At the same time, if real-time observation of the cleaning effect is required during the cleaning process, simply reinstall the transparent plexiglass cover 4 and tighten the connecting bolts 5. The internal condition of the valve body can be clearly observed through the highly transparent cover, enabling real-time online observation without shutting down the machine. This effectively guides the cleaning process and significantly improves maintenance efficiency and operational reliability.

Claims

1. A real-time monitoring online cleaning device for a flow regulating and pressure regulating valve, comprising a flow regulating and pressure regulating valve body (1), characterized in that, Four valve body conical cleaning holes (2) are evenly distributed along the circumference of the outer side of the outlet end of the flow regulating and pressure regulating valve body (1). The axis of the valve body conical cleaning holes (2) is arranged at 45° with the center line of the flow regulating and pressure regulating valve body (1). The valve body conical cleaning holes (2) have a conical structure, and the diameter of the hole opening is smaller than the diameter of the hole bottom. An annular sealing groove (6) is provided at the opening of the valve body conical cleaning holes (2). The end face of the opening of the valve body conical cleaning holes (2) is a precision-machined plane. Multiple threaded holes are evenly distributed along the circumference inside the opening of the valve body conical cleaning holes (2). The device also includes four transparent plexiglass cover plates (4), each of which is a circular plate structure, and its outer edge dimensions match the opening of the valve body conical cleaning hole (2). An annular groove (7) is provided on the sealing surface of each transparent plexiglass cover plate (4). A sealing O-ring (8) is embedded in the annular groove (7). The device also includes several connecting bolts (5), which pass through through holes in the transparent plexiglass cover plates (4) and connect to the valve body conical cleaning hole (2). The threaded hole of the conical cleaning hole (2) is fitted to press and seal the transparent organic glass cover plate (4) into the opening of the conical cleaning hole (2) of the valve body; the internal cavity of the main body (1) of the flow regulating and pressure regulating valve is provided with multiple radially arranged support ribs (9); at least one of the support ribs (9) is provided with a support rib relief groove (3), the opening of the support rib relief groove (3) faces the internal cavity of the valve body, and its width is 150mm-200mm and its height is 80mm-100mm.

2. The online cleaning device for flow regulating and pressure regulating valves with real-time monitoring according to claim 1, characterized in that, The taper of the valve body conical cleaning hole (2) is 1:10; the inner wall surface of the valve body conical cleaning hole (2) is smoothed; the four valve body conical cleaning holes (2) correspond to the four different chamber areas inside the main body (1) of the flow regulating and pressure regulating valve.

3. The online cleaning device for flow regulating and pressure regulating valves according to claim 1 or 2, characterized in that, The main body (1) of the flow regulating and pressure regulating valve has several mounting bosses evenly distributed and protruding from the flange plane in the circumferential direction; the valve body conical cleaning hole (2) is opened inside the mounting bosses.

4. The online cleaning device for flow regulating and pressure regulating valves with real-time monitoring according to claim 1, characterized in that, The transparent acrylic cover (4) is made of high-transmittance acrylic glass with a light transmittance greater than 90%; the impact resistance of the transparent acrylic cover (4) is greater than 15 kJ / m. 2 The outer diameter of the transparent plexiglass cover (4) is five to ten millimeters larger than the diameter of the valve body conical cleaning hole (2).

5. The online cleaning device for flow regulating and pressure regulating valves according to claim 1 or 4, characterized in that, The thickness of the central area of ​​the transparent plexiglass cover (4) is 12mm-15mm, and the thickness of the edge area is 8mm-10mm; the outer surface of the transparent plexiglass cover (4) is a flat surface or a slightly convex curved surface.

6. The online cleaning device for flow regulating and pressure regulating valves according to claim 1, characterized in that, The sealing O-ring (8) has a circular cross-section and is made of elastic rubber resistant to media corrosion. The temperature range of the sealing O-ring (8) is -20℃ to 120℃. In its free state, the outer diameter of the sealing O-ring (8) is larger than the bottom diameter of the annular groove (7). When the transparent plexiglass cover plate (4) is pressed, the compression of the sealing O-ring (8) is 20%-30% of its free height.

7. The online cleaning device for flow regulating and pressure regulating valves with real-time monitoring according to claim 1, characterized in that, The number of connecting bolts (5) is multiple, and they are evenly distributed along the circumference of the transparent plexiglass cover plate (4); the head of the connecting bolt (5) is provided with an internal hexagonal groove; the strength grade of the connecting bolt (5) is 8.8; the length of the threaded portion of the connecting bolt (5) is greater than the sum of the thickness of the transparent plexiglass cover plate (4) and the thickness of the valve body conical cleaning hole (2).

8. The online cleaning device for flow regulating and pressure regulating valves according to claim 1, characterized in that, The width of the support rib relief groove (3) is 150mm-200mm and the height is 80mm-100mm; the groove depth of the support rib relief groove (3) is greater than half the thickness of the support rib (9); the edge of the support rib relief groove (3) is rounded; the bottom of the support rib relief groove (3) is an arc transition structure; the opening edge of the support rib relief groove (3) is chamfered.

9. The online cleaning device for flow regulating and pressure regulating valves according to claim 1 or 8, characterized in that, The surface roughness of the support rib relief groove (3) is less than 3.2 μm; the support rib (9) with the support rib relief groove (3) is located in the area between the two valve body conical cleaning holes (2).

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