Pneumatic high-pressure regulating valve

Abstract

The utility model provides a pneumatic high-pressure regulating valve, which relates to the technical field of pneumatic high-pressure regulating valves and comprises a valve body and a pipeline connected with a port of the valve body, a detection mechanism is arranged between any pipeline and the butted port on the valve body, and the detection mechanism comprises two fixing rings which are respectively fixed on the surface of the valve body close to the port and on the outer wall of the pipeline. The two spiral fastening strips are arranged to bind and fix the positions, close to the two ends, of the surface of the air bag, so that the positions, close to the two ends, of the air bag can be sealed and fixed, and air pressure generated by expansion and inflation of the air bag is gathered at the butt joint position of a valve body port and a pipeline; and the air pressure sensor is arranged to monitor the air pressure change in real time, the sealing performance of the joint of the valve body and the pipeline is judged by monitoring the air pressure, and even if leakage occurs, only air enters the pipeline, and medium pollution conveyed in the pipeline cannot be caused.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic high-pressure regulating valve technology, and in particular to a pneumatic high-pressure regulating valve. Background Technology

[0002] Pneumatic high-pressure regulating valves mainly consist of a pneumatic actuator and a regulating valve body. They are used to transport media within equipment by connecting to the equipment. However, prolonged use at the connection points of the regulating valves can easily lead to a deterioration in the sealing effect, resulting in leakage during the transport process. Therefore, it is necessary to install appropriate sealing detection mechanisms at the pipeline connection points.

[0003] For example, in the prior art, a leak-proof pneumatic high-pressure regulating valve, publication number CN216768543U, firstly, the sponge ring is fixed to the connecting flange by the first and second clamps. Then, soapy water is stored in a storage tank. After the soapy water is stored in the storage tank, it flows into the sponge ring through the annular pipe. If a leak occurs during use, bubbles will be generated on the sponge ring, making it easier for staff to detect the leak in time. At the same time, when the soapy water content in the sponge ring is low, soapy water will flow into the sponge ring through the annular pipe, thus supplying soapy water to the sponge ring.

[0004] However, as is well known, the cause of leakage is gaps at the connecting flange. These gaps can easily allow soapy water from the sponge ring to enter the valve body or pipeline, causing subsequent regulating valves to contaminate the medium when transporting it. Utility Model Content

[0005] The purpose of this utility model is to solve the problems existing in the prior art, and a pneumatic high-pressure regulating valve is proposed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a pneumatic high-pressure regulating valve, comprising a valve body and a pipe connecting to the port of the valve body, wherein a detection mechanism is provided between any of the pipes and the port of the valve body, the detection mechanism comprising two fixing rings respectively fixed on the surface of the valve body near the port and on the outer wall of the pipe, wherein an I-shaped ring is fixedly installed at the middle position of the outer wall of the fixing ring, and an air bladder for covering the port of the pipe and the valve body is provided between the two fixing rings, the air bladder being tubular and its two ends being respectively fitted onto the two I-shaped rings, wherein a spiral fastening strip is provided on the outer side of the I-shaped ring, the spiral fastening strip being fitted onto the outer side of the air bladder and used to press the outer side of the air bladder, and a pressure sensor is installed on both sides of one of the I-shaped rings.

[0007] Preferably, each of the two fixed rings has a ring seat fixedly installed at one of its opposite ends. The edge of the ring seat end face is a hollowed-out pattern distributed in a ring array, and two sockets are inserted into the hollowed-out areas. A winch is rotatably connected to each socket.

[0008] Preferably, the two socket surfaces extend outward and are respectively positioned close to both ends of the spiral fastening strip. One end of the hinge rope wound on the winch passes through the extension of the socket, and the hinge ropes wound on the two winches are respectively used to pull the two ends of the spiral fastening strip.

[0009] Preferably, the inner side of the ring seat facing the I-shaped ring has an annular groove, the port of the airbag extends into the annular groove, and a pressure ring for pressing the inner wall of the airbag port is slidably installed in the annular groove.

[0010] Preferably, the pressure ring surface is fixedly mounted with a plurality of internally threaded cylinders arranged in an annular array, and a plurality of telescopic rods are provided between the pressure ring and the inner wall of the annular groove. The internally threaded cylinders are internally threaded with studs that are arranged parallel to the fixed ring and rotatably connected to the annular groove wall.

[0011] Preferably, a gear is fixedly installed at the through end of the stud, and a toothed ring that meshes with the gear is rotatably connected to the end face of the ring seat.

[0012] Preferably, an inflation tube is fixedly installed through the side of the ring seat on the fixing ring, and one end of the inflation tube is fixedly installed through the side of the I-shaped ring.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] 1. In this utility model, by setting two spiral fastening strips to bind and fix the airbag surface near both ends, the airbag near both ends can be sealed and fixed. The air pressure generated by the inflation of the airbag is concentrated at the junction of the valve body port and the pipeline. By setting an air pressure sensor to monitor the air pressure change in real time, the sealing performance of the junction between the valve body and the pipeline can be judged by monitoring the air pressure. Even if leakage occurs, only gas will enter the pipeline and will not cause pollution to the medium transported in the pipeline.

[0015] 2. In this utility model, when the air pressure at the valve body port decreases while the air pressure in the air bladder space between the I-ring and the ring seat increases, it may indicate that the air bladder that is bound and compressed at the spiral fastening strip has loosened, resulting in air leakage. That is, by monitoring the air pressure in the air bladder space between the I-ring and the ring seat, it is convenient to monitor whether the air bladder that is bound and compressed at the spiral fastening strip is leaking, which helps personnel to determine the leak point when the air pressure at the valve body port changes. Attached Figure Description

[0016] Figure 1 A three-dimensional structural schematic diagram of the pneumatic high-pressure regulating valve is provided for this utility model;

[0017] Figure 2 A cross-sectional structural diagram of the pneumatic high-pressure regulating valve pipeline is provided for this utility model;

[0018] Figure 3 An exploded structural diagram of the pneumatic high-pressure regulating valve detection mechanism is provided for this utility model.

[0019] Figure 4 for Figure 2 Enlarged view of point A in the middle.

[0020] Legend: 1. Valve body; 2. Pipeline; 3. Airbag; 4. Ring seat; 5. Pressure sensor; 6. Spiral fastening strip; 7. Winch; 8. Socket; 9. Ring groove; 10. I-ring; 11. Gear; 12. Gear ring; 13. Pressure ring; 14. Telescopic rod; 15. Stud; 16. Internal threaded cylinder; 17. Retaining ring; 18. Inflation pipe. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] like Figures 1-4As shown, a pneumatic high-pressure regulating valve includes a valve body 1 and a pipe 2 connecting to the port of the valve body 1. A detection mechanism is provided between any of the pipes 2 and the port on the valve body 1. The detection mechanism includes two fixing rings 17, one fixed to the surface of the valve body 1 near the port and the other to the outer wall of the pipe 2. An I-shaped ring 10 is fixedly installed at the middle of the outer wall of the fixing ring 17. An air bladder 3 is provided between the two fixing rings 17 to cover the port of the pipe 2 connecting to the valve body 1. The air bladder 3 is tubular and its two ends are respectively fitted onto the... Two I-beam rings 10 have spiral fastening strips 6 on their outer sides. These strips are fitted around the outside of the airbag 3 and are used to compress the outside of the airbag 3. Pressure sensors 5 are mounted on both sides of one of the I-beam rings 10. An inflation tube 18 is fixedly installed through the side of the ring seat 4 on the fixing ring 17. One end of the inflation tube 18 is fixedly installed through the side of the I-beam ring 10. In actual use, the valve body 1 port and the pipe 2 port are connected by a flange. The fixing ring 17 is installed and fixed to the valve body 1 and the pipe 2 port by circumferential welding. To ensure a tight seal, the I-ring 10 is also installed on the fixing ring 17 via circumferential welding. The airbag 3 is fitted onto the connection between the valve body 1 and the pipe 2, with both ends passing through two I-rings 10. The surface of the airbag 3 is bound with a spiral fastening strip 6, ensuring that the airbag 3 fits tightly against the outer edge of the I-ring 10 and guarantees airtightness. Inflation is performed into the airbag 3 through the inflation tube 18, causing the airbag 3 at the connection between the valve body 1 and the pipe 2 to expand. At this time, the pressure sensor 5 located on one side of the I-ring 10 detects the air pressure inside the expanded part of the airbag 3. In actual use, when a leak occurs at the connection between the valve body 1 and the pipe 2, the gas inside the expanded airbag 3 enters the pipe 2, or the gas in the pipe 2 enters the airbag 3, causing a change in the air pressure inside the airbag 3. The pressure sensor 5 can monitor the change in the air pressure inside the airbag 3 in real time, which helps personnel to determine whether there is a leak. Even if a leak occurs, only gas enters the pipe 2 and will not cause contamination of the medium transported in the pipe 2.

[0024] To ensure the spiral fastening strip 6 is securely bound: Two fixing rings 17 are each fixedly mounted with a ring seat 4 at opposite ends. The edge of the ring seat 4 has a circular array of perforations, and two sockets 8 are inserted into the perforations. A winch 7 is rotatably connected to each socket 8. The surfaces of the two sockets 8 extend outwards and are positioned near both ends of the spiral fastening strip 6. One end of the hinge rope wound on the winch 7 passes through the extension of the socket 8, and the hinge ropes wound on the two winches 7 are used to pull the two ends of the spiral fastening strip 6, respectively. Figure 2The socket 8 is fitted to the side of the ring seat 4 by installing nuts, so that the socket 8 can be fixed at any position on the ring seat 4. The winch 7 used is one of the common winches on the market with locking and braking functions. The ropes released by the two winches 7 are respectively connected to the two ends of the spiral fastening strip 6. By rotating the winch 7 to wind up the ropes, the spiral fastening strip 6 can be wound and tightened by pulling the ropes.

[0025] To assist in detecting leaks: An annular groove 9 is formed on the inner side of the side of the ring seat 4 facing the I-shaped ring 10. The port of the airbag 3 extends into the annular groove 9, and a pressure ring 13 for pressing the inner wall of the airbag 3 port is slidably installed within the annular groove 9. Several internally threaded cylinders 16 arranged in a ring array are fixedly installed on the surface of the pressure ring 13, and several telescopic rods 14 are provided between the pressure ring 13 and the inner wall of the annular groove 9. The internally threaded cylinders 16 are internally threadedly connected to studs 15 that are parallel to the fixed ring 17 and rotatably connected through the groove wall of the annular groove 9. A gear 11 is fixedly installed at the through end of the stud 15. A gear ring 12 that meshes with the gear 11 is rotatably connected to the end face of the ring seat 4. By rotating the gear ring 12, several gears 11 on the same ring seat 4 rotate, thereby rotating the stud 15. Utilizing the threaded connection between the stud 15 and the internally threaded cylinders 16, under the condition that the pressure ring 13 is not rotated with the assistance of the telescopic rods 14, the corresponding internally threaded cylinders 16... Since it does not rotate, when the stud 15 rotates, the internal threaded cylinder 16 will drive the pressure ring 13 to move towards the port of the air bladder 3. By using the pressure ring 13 to press the inner wall of the port of the air bladder 3, the port of the air bladder 3 can be made to fit against the inner side of the ring groove 9. Furthermore, the through part between the stud 15 and the ring groove 9 is sealed by using a sealed bearing. Therefore, the air pressure sensor 5 on the other side of the I-ring 10 can monitor the air pressure in the space of the air bladder 3 between the I-ring 10 and the ring seat 4 in real time. In actual use, when the air pressure at the port of the valve body 1 decreases while the air pressure in the space of the air bladder 3 between the I-ring 10 and the ring seat 4 increases, it may indicate that the air bladder 3 bound and pressed at the spiral fastening strip 6 has loosened, resulting in air leakage. In other words, by monitoring the air pressure in the space of the air bladder 3 between the I-ring 10 and the ring seat 4, it is convenient to monitor whether the air bladder 3 bound and pressed at the spiral fastening strip 6 has leaked. This helps personnel to determine the leak point when the air pressure at the port of the valve body 1 changes.

[0026] Working principle: During use, after the valve body 1 port is connected and fixed to the pipe 2, the airbag 3 is fitted onto the valve body 1 port, and both ends of the airbag 3 are fixedly installed in the annular groove 9. Inflation is carried into the airbag 3 through the inflation tube 18, causing the airbag 3 to expand. Then, the operator manually presses the airbag 3 between the I-shaped ring 10 and the ring seat 4 to allow the air pressure in this part to enter between the two I-shaped rings 10. The spiral fastening strip 6 is used to bind and fix the airbag 3 to the I-shaped ring 10. That is, at this time, the air pressure value of the airbag 3 located between the I-shaped ring 10 and the ring seat 4 is different from the air pressure value of the airbag 3 located at the valve body 1 port. Two pressure sensors 5 are used to monitor the air pressure of the airbag 3 located between the I-shaped ring 10 and the ring seat 4 and the air pressure of the airbag 3 located at the port of the valve body 1 in real time. When the air pressure of the airbag 3 located between the I-shaped ring 10 and the ring seat 4 remains unchanged, but the air pressure of the airbag 3 located at the port of the valve body 1 changes, it indicates that there is a leak at the connection between the valve body 1 and the pipe 2. When the air pressure of the airbag 3 located between the I-shaped ring 10 and the ring seat 4 increases, but the air pressure of the airbag 3 located at the port of the valve body 1 decreases, it indicates that the airbag 3 bound and pressed at the spiral fastening strip 6 has loosened, resulting in air leakage.

[0027] The wiring diagram of the air pressure sensor 5 in this utility model is common knowledge in the field. Its working principle is a well-known technology. The appropriate model is selected according to actual use. Therefore, the control method and wiring layout of the air pressure sensor 5 will not be explained in detail.

[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A pneumatic high-pressure regulating valve, comprising a valve body (1) and a pipe (2) connecting to the port of the valve body (1), characterized in that: A detection mechanism is provided between the port where any of the pipes (2) and the valve body (1) are connected. The detection mechanism includes two fixing rings (17) that are fixed to the surface of the valve body (1) near the port and the outer wall of the pipe (2), respectively. An I-shaped ring (10) is fixedly installed at the middle position of the outer wall of the fixing ring (17). An airbag (3) is provided between the two fixing rings (17) to cover the port where the pipe (2) and the valve body (1) are connected. The airbag (3) is tubular and its two ends are respectively sleeved on the two I-shaped rings (10). A spiral fastening strip (6) is provided on the outer side of the I-shaped ring (10). The spiral fastening strip (6) is sleeved on the outer side of the airbag (3) and is used to press the outer side of the airbag (3). A pressure sensor (5) is installed on both sides of one of the I-shaped rings (10).

2. The pneumatic high-pressure regulating valve according to claim 1, characterized in that: Two fixed rings (17) are fixedly installed with ring seats (4) at opposite ends. The edge of the end face of the ring seat (4) is a hollowed-out shape with a circular array and two sockets (8) are inserted into the hollowed-out area. A winch (7) is rotatably connected to the socket (8).

3. The pneumatic high-pressure regulating valve according to claim 2, characterized in that: The surfaces of the two sockets (8) extend outward and are respectively located close to both ends of the spiral fastening strip (6). One end of the hinge rope wound on the winch (7) passes through the extension of the socket (8), and the hinge ropes wound on the two winches (7) are respectively used to pull the two ends of the spiral fastening strip (6).

4. The pneumatic high-pressure regulating valve according to claim 2, characterized in that: The ring seat (4) has an inner side groove (9) on the side facing the I-shaped ring (10), the port of the airbag (3) extends into the ring groove (9), and a pressure ring (13) for pressing the inner wall of the port of the airbag (3) is slidably installed in the ring groove (9).

5. The pneumatic high-pressure regulating valve according to claim 4, characterized in that: The pressure ring (13) is fixedly installed with a number of internally threaded cylinders (16) arranged in an annular array, and a number of telescopic rods (14) are provided between the pressure ring (13) and the inner wall of the annular groove (9). The internally threaded cylinder (16) is internally threaded with a stud (15) that is parallel to the fixed ring (17) and rotatably connected to the groove wall of the annular groove (9).

6. The pneumatic high-pressure regulating valve according to claim 5, characterized in that: The stud (15) has a gear (11) fixedly installed at its through end, and the end face of the ring seat (4) is rotatably connected to a toothed ring (12) that meshes with the gear (11).

7. The pneumatic high-pressure regulating valve according to claim 6, characterized in that: An inflation tube (18) is fixedly installed through the side of the ring seat (4) on the fixed ring (17), and one end of the inflation tube (18) is fixedly installed through the side of the I-shaped ring (10).

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