Pressure regulating box outlet pressure monitoring valve

Abstract

The utility model relates to the technical field of pressure monitoring of pressure regulating boxes, in particular to a pressure regulating box outlet pressure monitoring valve. The pressure regulating box outlet pressure monitoring valve comprises an installation disc, a threaded connector used for being connected with a pressure regulating box pressure measuring opening sharp nozzle valve is fixedly installed on the lower disc face of the installation disc, and a pressure regulating box outlet pressure monitoring component is installed on the upper disc face of the installation disc. According to the pressure regulating box outlet pressure monitoring valve provided by the utility model, the detection valve is arranged on the pressure regulating box pressure measuring port sharp nozzle valve, so that the outlet pressure can be quickly confirmed, the display cap A, the display cap B and the display cap C are combined through axial sliding to form three-color pressure state coding without external equipment, a worker can quickly identify a pressure interval, the inspection efficiency is greatly improved, and the inspection cost is reduced. And the device is light, handy, convenient and easy to carry about.

Description

Technical Field

[0001] This utility model relates to the field of pressure monitoring technology for pressure regulating boxes, and in particular to a pressure monitoring valve for the outlet pressure of a pressure regulating box. Background Technology

[0002] Gas pressure regulating boxes are generally not designed with an outlet pressure gauge. During routine inspections or maintenance, inspectors carry U-shaped or electronic pressure gauges to check the outlet pressure. This is not only inconvenient to carry but also cumbersome to operate. U-shaped pressure gauges have drawbacks such as fragile glass tubes, risks of mercury / water leakage, and unintuitive readings. While electronic pressure gauges offer higher accuracy, they suffer from battery dependence, high cost, and weak resistance to electromagnetic interference. Furthermore, both types of equipment require valve connection for operation, making the process cumbersome and unable to provide real-time visualization of pressure status.

[0003] Therefore, it is necessary to provide a new pressure monitoring valve for the outlet pressure of the pressure regulating box to solve the above-mentioned technical problems. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a pressure monitoring valve for the outlet pressure of a pressure regulating box.

[0005] The pressure regulating box outlet pressure monitoring valve provided by this utility model includes a mounting plate. A threaded connector for connecting the pressure measuring port nozzle valve of the pressure regulating box is fixedly installed on the lower plate surface of the mounting plate, and a pressure regulating box outlet pressure monitoring component is installed on the upper plate surface of the mounting plate.

[0006] The monitoring component includes a display cap A, which is fixedly mounted on the mounting plate and communicates with the threaded connector. A display cap B is installed inside the display cap A and is slidably connected. A display cap C is fixedly mounted at the top opening of the display cap B and is fixedly mounted on the inner top wall of the display cap C. The other end of the spring is fixedly connected to the upper surface of the mounting plate.

[0007] The mounting plate is equipped with a transparent cover for covering the monitoring components, and a detachable self-testing component is installed on the top of the transparent cover. The self-testing component includes a transparent cylinder, and a rubber water bladder is fixedly embedded in the inner top wall of the transparent cylinder. Multiple one-way drain valves are installed on the rubber water bladder, and a compression piston for compressing the rubber water bladder to release air is provided inside the transparent cylinder.

[0008] Preferably, a one-way liquid inlet valve for inflating the rubber water bladder is fixedly installed on the top of the transparent cylinder, and a threaded connector is fixedly installed on the top of the transparent cylinder. The threaded connector matches the threaded interface opened on the top of the transparent cover. The pressing piston is slidably connected to the transparent cylinder, and a tension spring is fixedly installed at the bottom of the pressing piston. The tension spring is fixedly connected to the inner ring of the threaded connector.

[0009] Preferably, the bottom of the display cap B is fixedly fitted with a bottom ring that matches the inner diameter of the display cap A.

[0010] Preferably, the inner walls of both sides of the display cap A are provided with axially arranged grooves, and the two sides of the bottom ring are fixedly fitted with limiting blocks, and the limiting blocks are inserted into the corresponding grooves and slidably connected to the grooves.

[0011] Preferably, the outer wall of the display cap A is coated with yellow, the outer wall of the display cap B is coated with red, and the outer wall of the display cap C is coated with green.

[0012] Preferably, the upper surface of the mounting plate is provided with a threaded ring opening, and a threaded connecting ring is fixedly fitted at the bottom of the transparent cover, and the threaded connecting ring is inserted into the threaded ring opening and is threadedly fixedly connected to the threaded ring opening.

[0013] Compared with related technologies, the pressure monitoring valve for the pressure regulating box provided by this utility model has the following advantages:

[0014] 1. This utility model installs the detection valve on the pressure measuring port nozzle valve of the pressure regulating box, which can quickly confirm the outlet pressure and display cap A (yellow), cap B (red), and cap C (green). Through axial sliding combination, a three-color pressure status code is formed. No external equipment is required, and the staff can quickly identify the pressure range, which greatly improves the inspection efficiency. In addition, this application is lightweight, convenient and easy to carry.

[0015] 2. With this utility model, staff can quickly check and identify potential leaks in cap A, cap B, or cap C through the self-testing component, thus preventing pressure detection valves from causing distorted monitoring data due to sealing problems and ensuring the reliability of pressure monitoring. Attached Figure Description

[0016] Figure 1 A schematic diagram of a preferred embodiment of the pressure regulating box outlet pressure monitoring valve provided by this utility model;

[0017] Figure 2 for Figure 1 A cross-sectional view of the mounting plate and monitoring components shown.

[0018] Figure 3 for Figure 2 A cross-sectional view of the monitoring component shown.

[0019] Figure 4 for Figure 1 The diagram shows the structure of the installation disk.

[0020] Figure 5 for Figure 1 The diagram shows the structure of the transparent cover.

[0021] Figure 6 for Figure 1 The diagram shows the structure of the self-test component.

[0022] Figure 7 for Figure 6 The diagram shows a cross-sectional view of the self-test component.

[0023] The following are the labeling elements in the diagram: 1. Mounting plate; 1a. Threaded ring; 11. Threaded connector; 2. Monitoring component; 21. Display A cap; 21a. Groove; 22. Display B cap; 221. Bottom ring; 222. Limiting block; 23. Display C cap; 24. Spring; 3. Transparent cover; 3a. Threaded interface; 31. Threaded connecting ring; 4. Self-testing component; 41. Transparent cylinder; 42. Threaded butt joint; 43. Rubber water bladder; 431. One-way inlet valve; 432. One-way drain valve; 44. Pressing piston; 45. Tension spring. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0025] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0026] Please see Figures 1 to 7 The present invention provides a pressure regulating box outlet pressure monitoring valve, which includes a mounting plate 1 and a monitoring component 2.

[0027] In the embodiments of this utility model, please refer to Figures 1 to 7 The lower surface of the mounting plate 1 is fixedly equipped with a threaded connector 11 for connecting the pressure measuring port nozzle valve of the pressure regulating box, and the upper surface of the mounting plate 1 is equipped with a monitoring component 2 for the outlet pressure of the pressure regulating box. The monitoring component 2 includes a display A cap 21, which is fixedly installed on the mounting plate 1 and communicates with the threaded connector 11. A display B cap 22 with a sliding connection is installed inside the display A cap 21. A display C cap 23 is fixedly installed at the top opening of the display B cap 22, and a spring 24 is fixedly installed on the inner top wall of the display C cap 23. The other end of the spring 24 is fixedly connected to the upper surface of the mounting plate 1.

[0028] The outer wall of cap A 21 is painted yellow, the outer wall of cap B 22 is painted red, and the outer wall of cap C 23 is painted green.

[0029] It is worth noting that when the monitoring component 2 is not under pressure, the spring 24 pulls the display cap C 23 to slide the display cap B 22 into the display cap A 21.

[0030] It should be noted that during operation, the pressure testing nozzle valve of the pressure regulating box is connected using threaded connector 11. Then, the nozzle valve is opened to quickly test the outlet pressure of the pressure regulating box. Specifically...

[0031] When the outlet pressure of the pressure regulating box is low (≤2500pa), its pressure value is less than the elastic force of spring 24. At this time, both display cap C 23 and display cap B 22 are located in display cap A 21, so only the yellow display cap A 21 can be seen.

[0032] When the outlet pressure of the pressure regulating box is at the normal pressure (normal pressure is 2800pa or 2500pa < pressure value < 3200pa), the pressure drives the spring 24 to stretch further, and the display cap B 22 slides out along the display cap A 21 until the display cap C 23 slides out of the display cap A 21. At this time, the display cap B 22 is located in the display cap A 21 or a small part of the display cap C 23 slides out of the display cap A 21 due to fluctuations (this is a normal display phenomenon). Therefore, the yellow display cap A 21 and the green display cap C 23 can be seen.

[0033] When the outlet pressure of the pressure regulating box is overpressure (≥3200pa), the pressure drives the spring 24 to stretch further, and the display cap B 22 slides further outward along the display cap A 21 until the display cap B 22 also slides outward from the display cap A 21. At this time, the display cap B 22 slides outward from the display cap A 21 or part of the display cap B 22 is located in the display cap A 21, so the yellow display cap A 21, the green display cap C 23 and the red display cap B 22 can be seen.

[0034] Therefore, by simply installing this detection valve on the pressure measuring port nozzle valve of the pressure regulating box, the outlet pressure can be quickly confirmed. The display cap 21 (yellow), the display cap 22 (red), and the display cap 23 (green) form a three-color pressure status code through axial sliding combination. No external equipment is required, and the staff can quickly identify the pressure range, which greatly improves the efficiency of inspection. In addition, this application is lightweight, convenient, and easy to carry.

[0035] In this embodiment: a bottom ring 221 matching the inner diameter of the display cap 21 is fixedly installed at the bottom of the display cap B 22. The inner walls on both sides of the display cap A 21 are provided with axially arranged grooves 21a. Limiting blocks 222 are fixedly fitted into the two sides of the bottom ring 221. The limiting blocks 222 are inserted into the corresponding grooves 21a and slidably connected to the grooves 21a. The bottom ring 221 can ensure that the side walls of the display cap B 22 and the display cap A 21 form a closed structure, reducing air pressure leakage. The design of the limiting blocks 222 and the grooves 21a can prevent the display cap B 22 and the display cap C 23 from shifting circumferentially, ensuring sliding stability.

[0036] It should also be noted that: in this application, spring 24 is a 304 stainless steel compression spring with a specification of 1.5×10×40 (wire diameter×middle diameter×free height, unit: mm) and a spring force coefficient of 1.2~1.8 N / mm, while 1.5 N / mm is recommended;

[0037] F = k·Δx;

[0038] F: Gas thrust (F=P×A, where A is the cross-sectional area of ​​the threaded connector 11);

[0039] Δx: Spring extension / contraction displacement;

[0040] By adjusting the preload of spring 24, the trigger thresholds of 2500Pa / 3200Pa are precisely matched with an error of <±3%. When selecting spring 24, it is tested in advance on the workbench using an air compressor, and it is installed into this application after meeting the requirements.

[0041] It is worth noting that the pressure detection valve in this application is inspected and maintained by staff on a regular basis.

[0042] In the embodiments of this utility model, please refer to Figures 1 to 7 A transparent cover 3 for covering the monitoring component 2 is installed on the mounting plate 1. A threaded ring opening 1a is opened on the upper surface of the mounting plate 1. A threaded connecting ring 31 is fixedly fitted at the bottom of the transparent cover 3, and the threaded connecting ring 31 is inserted into the threaded ring opening 1a and threadedly fixedly connected to the threaded ring opening 1a.

[0043] The top of the transparent cover 3 is equipped with a detachable self-testing component 4. The self-testing component 4 includes a transparent cylinder 41. A rubber water bladder 43 is fixedly embedded in the inner top wall of the transparent cylinder 41, and multiple one-way drain valves 432 are installed on the rubber water bladder 43. A pressing piston 44 for pressing the rubber water bladder 43 to release air is provided inside the transparent cylinder 41. Specifically, a one-way inlet valve 431 for inflating the rubber water bladder 43 is fixedly installed on the top of the transparent cylinder 41, and a threaded connector 42 is fixedly installed on the top of the transparent cylinder 41. The threaded connector 42 matches the threaded interface 3a opened on the top of the transparent cover 3. The pressing piston 44 is slidably connected to the transparent cylinder 41, and a tension spring 45 is fixedly installed at the bottom of the pressing piston 44. The tension spring 45 is fixedly connected to the inner ring of the threaded connector 42.

[0044] It should be noted that: installing a transparent cover 3 on the mounting plate 1 can protect the monitoring component 2 and prevent the display caps on the monitoring component 2 from being damaged by collision. The threaded connector 42 at the bottom of the transparent tube 41 is threadedly connected to the threaded interface 3a at the top of the transparent cover 3, so that the transparent cover 3 and the transparent tube 41 form a sealed structure covering the monitoring component 2.

[0045] In this process, a dyeing solution (such as a dark-colored solution prepared from watercolor paint) is injected into a rubber water bladder 43 through a one-way inlet valve 431. When a gas leak occurs between the display caps 21, 22, or 23, the gas enters the transparent cover 3 and then the transparent cylinder 41. Under the action of air pressure, the pressure piston 44 slides up the transparent cylinder 41 and stretches the tension spring 45. When the rubber water bladder 43 is squeezed, the colored solution inside the rubber water bladder 43 is discharged through a one-way drain valve 432 into the transparent cylinder 41 between the transparent cylinder 41 and the pressure piston 44. Therefore, the staff can quickly check and know if there is a potential leak in the display caps 21, 22, or 23, avoiding the distortion of monitoring data due to sealing problems of the pressure detection valve and ensuring the reliability of pressure monitoring.

[0046] In addition, a drain valve is installed on the side wall near the top of the transparent cylinder 41 to drain the colored solution between the transparent cylinder 41 and the pressing piston 44.

[0047] Furthermore, in low-temperature environments, the composition of the dyeing solution can be changed. For example, antifreeze (such as ethylene glycol aqueous solution) can be used instead of ordinary solution to lower the freezing point to below -30°C. At the same time, a small amount of preservative can be added to the antifreeze to prevent deterioration during long-term storage. Alternatively, the transparent cylinder 41 can be insulated by wrapping a layer of heat-insulating cotton around the outside of the transparent cylinder 41 or using a double-layer vacuum transparent cylinder structure to reduce the influence of ambient temperature on the internal dyeing solution and ensure normal self-testing function.

[0048] In this application, the tension spring 45 is a 304 stainless steel compression spring with a specification of 1.0×8×30 (wire diameter×middle diameter×free height, unit: mm) and a spring force coefficient of 0.8~1.2 N / mm, with 1.0 N / mm recommended.

[0049] It is worth noting that the dark water used to prepare this watercolor paint can be black water or a dark water that is different from yellow, red, and green, to avoid confusion with the A cap 21, B cap 22, or C cap 23.

[0050] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A pressure regulating tank outlet pressure monitoring valve comprising a mounting disc (1), characterized in that, The lower disc surface of the mounting disc (1) is fixedly provided with a threaded connector (11) for connecting a pressure measuring nozzle valve of a pressure regulating tank, and the upper disc surface of the mounting disc (1) is provided with a pressure monitoring component (2) of the outlet pressure of the pressure regulating tank; The monitoring component (2) comprises a display A cap (21) fixedly provided on the mounting disc (1) and in communication with the threaded connector (11), and a display B cap (22) slidably provided in the display A cap (21), a display C cap (23) fixedly provided on the top opening of the display B cap (22), and a spring (24) fixedly provided on the inner top wall of the display C cap (23) and fixedly connected to the upper disc surface of the mounting disc (1). The mounting disc (1) is provided with a transparent cover (3) for covering the monitoring component (2), and the top of the transparent cover (3) is provided with a self-testing component (4) detachably connected thereto, the self-testing component (4) comprising a transparent cylinder (41), the inner top wall of the transparent cylinder (41) being fixedly provided with a rubber water bag (43), and a plurality of one-way liquid discharge valves (432) being provided on the rubber water bag (43), and the transparent cylinder (41) being provided with a compression piston (44) for compressing the rubber water bag (43) to discharge air.

2. The pressure regulating tank outlet pressure monitoring valve of claim 1, wherein, The top of the transparent cylinder (41) is fixedly provided with a one-way liquid inlet valve (431) for inflating the rubber water bag (43), and the top of the transparent cylinder (41) is fixedly provided with a threaded adapter (42) matched with a threaded interface (3a) formed on the top of the transparent cover (3), the compression piston (44) is slidably connected to the transparent cylinder (41), and the bottom of the compression piston (44) is fixedly provided with a tension spring (45) fixedly connected to the inner ring of the threaded adapter (42).

3. The pressure regulating tank outlet pressure monitoring valve of claim 1, wherein, The bottom of the display B cap (22) is fixedly provided with a bottom ring (221) matched with the inner diameter of the display A cap (21).

4. The pressure regulating tank outlet pressure monitoring valve of claim 3, wherein, The two side walls of the bottom ring (221) are fixedly provided with limiting blocks (222) inserted into the corresponding cut grooves (21a) and slidably connected thereto.

5. The pressure regulating tank outlet pressure monitoring valve of claim 4, wherein, The outer cap wall of the display A cap (21) is coated yellow, the outer cap wall of the display B cap (22) is coated red, and the outer cap wall of the display C cap (23) is coated green.

6. The pressure regulating tank outlet pressure monitoring valve of claim 1, wherein, The upper surface of the mounting disc (1) is provided with a threaded ring opening (1a), the bottom of the transparent cover (3) is fixedly provided with a threaded connecting ring (31) inserted into the threaded ring opening (1a) and threadedly fixedly connected thereto.

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