Off-line under-pressure detection device for oxygen and nitrogen valves

Abstract

The utility model discloses an off-line under-pressure detection device for oxygen and nitrogen valves. Comprising a pipeline; one end of the pipeline is blocked by a blind plate; the other end of the pipeline is detachably connected with a valve body to be detected; the pressure air inlet pipe penetrates through the blind plate and is arranged at the end part of the pipeline; the pressure gauge is arranged on the blind plate, and a connector of the pressure gauge is communicated with the interior of the pipeline; a quick release assembly is arranged at the joint of the valve body and the pipeline; a plurality of groups of quick release assemblies are arranged around the central axis of the pipeline in an annular array manner; according to the utility model, a specific detection device is utilized, so that the repaired valve body can be tested under pressure, and the use condition of a load under pressure in the actual use process is simulated; therefore, the valve maintenance efficiency is improved, and the situation that the valve is disassembled and assembled repeatedly is avoided.

Description

Technical Field

[0001] This utility model relates to the technical field of valve testing devices, specifically to an offline pressure testing device for oxygen and nitrogen valves. Background Technology

[0002] Currently, the oxygen and nitrogen quick-cut ball valves used in converters are frequently used and often malfunction, requiring disassembly and repair.

[0003] However, after repairing the valves that were removed from the production line (i.e., valves that were disassembled due to malfunction), only no-load testing can be performed. At this time, the valve will show that everything is normal during the no-load test; however, when the valve is replaced on the pipeline and used under pressure, the pressure will cause damage to the parts that were not properly repaired, and abnormalities will occur again. As a result, technicians will have to replace the valves again. This will cause a lot of production downtime in the converter and increase the labor cost of valve replacement. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides an offline pressure testing device for oxygen and nitrogen valves. By utilizing a specific testing device, the repaired valves can undergo pressure testing to simulate the pressure load conditions during actual use. In this way, this utility model improves valve maintenance efficiency and avoids the need for repeated valve disassembly and assembly.

[0005] To achieve the above-mentioned technical objectives, the present invention employs the following technical means:

[0006] An offline pressure testing device for oxygen and nitrogen valves; comprising:

[0007] Pipeline; one end of the pipeline is sealed by a blind flange; the other end of the pipeline is detachably connected to a valve body to be tested;

[0008] A pressure intake pipe passes through the blind plate and is located at the end of the pipe;

[0009] A pressure gauge is mounted on the blind plate, and its interface is connected to the inside of the pipe.

[0010] The valve body is connected to a compressed air pipe.

[0011] A quick-release assembly is provided at the connection between the valve body and the pipeline; multiple sets of the quick-release assemblies are arranged in a circular array around the central axis of the pipeline; wherein, the quick-release assembly includes:

[0012] A guide rod passes sequentially through threaded holes in the pipe and valve body;

[0013] An approach plate is fixedly installed on the pipe; the approach plate is designed in an L-shape, with its sides attached to the side wall of the pipe.

[0014] The latch includes a fixing rod, a wrench, and a retaining ring; the fixing rod is vertically inserted into one end of the guide rod; the wrench is rotatably connected to the free end of the guide rod; the retaining ring passes through an opening in the wrench and rotates around the central axis of the opening; wherein the opening is located on one side of the connection point between the wrench and the guide rod, facing the free end of the wrench.

[0015] The end of the wrench is designed with a streamlined structure.

[0016] The guide rod passes through the mounting plate and has a nut threadedly connected to its end near the mounting plate.

[0017] The valve body is detachably connected to the pipeline by bolts.

[0018] Beneficial effects:

[0019] First, this utility model utilizes a detection device to fix the repaired valve body to one side of the pipeline. By controlling the pressure inlet pipe, gas is injected into the pipeline to simulate the actual pressurized load condition. This allows the valve body to directly simulate the working condition, exposing any hidden problems caused by incomplete repairs and preventing the valve body from being damaged again during actual use after repair. Thus, this utility model improves valve repair efficiency and avoids repeated disassembly and assembly of valves.

[0020] Secondly, this utility model utilizes a quick-release assembly, allowing for easy fixing of the valve body. First, the guide rod is passed through the pipe and the valve body, and a nut is used to secure the guide rod. Then, the latch is lifted, loosely resting on the corner of the mounting plate. Next, the wrench is pulled downwards to firmly tighten the latch onto the mounting plate. Thus, the valve body and the pipe are tightly fixed together. Conversely, when the valve body needs to be removed, the above steps are reversed, and the guide rod is pulled out to complete the disassembly. Therefore, this utility model enables quick valve assembly and disassembly, effectively improving its ease of use. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the offline live-line testing device of this utility model;

[0022] Figure 2 This is an exploded view of the offline live-line detection device of this utility model;

[0023] Figure 3 This is a schematic diagram of the quick-release component in the offline live-line testing device of this utility model.

[0024] In the diagram: 1. Pipeline; 2. Valve body; 3. Blind flange; 4. Pressure inlet pipe; 5. Pressure gauge;

[0025] 61. Guide rod; 62. Laying plate; 63. Fastener;

[0026] 631. Fixing rod; 632. Wrench; 633. Buckle. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0028] This utility model provides an offline pressurized testing device for oxygen and nitrogen valve bodies 2, comprising: a pipeline 1; one end of the pipeline 1 is sealed by a blind plate 3; the other end of the pipeline 1 is detachably connected to the valve body 2 to be tested; a pressure inlet pipe 4, which passes through the blind plate 3 and is located at the end of the pipeline 1; a pressure gauge 5, which is located on the blind plate 3 and whose interface is connected to the inside of the pipeline 1; wherein, in order to improve the opening and closing efficiency of the valve body 2, the valve body 2 is connected to a compressed air pipe for driving the valve body 2 to open and close.

[0029] Reference Figure 1-2 After the valve body 2 is repaired, it is fixed to one side of the pipeline 1. Gas is injected into the pipeline 1 through the pressure inlet pipe 4 to simulate the actual pressurized load condition. This allows the valve body 2 to directly simulate the working condition and expose any hidden problems that were not fully repaired. This avoids the problem of the valve body 2 being damaged again when it is used in actual operation after repair. In this way, the maintenance efficiency of the valve body 2 can be improved and the repeated disassembly and assembly of the valve body 2 can be avoided.

[0030] A quick-release assembly is provided at the connection between the valve body 2 and the pipeline 1; multiple sets of quick-release assemblies are arranged in a ring around the central axis of the pipeline 1; wherein, the quick-release assembly includes: a guide rod 61, which passes through the screw holes at the pipeline 1 and the valve body 2 in sequence; a mounting plate 62, which is fixed on the pipeline 1; the mounting plate 62 is designed with an L-shaped structure, and its side is attached to the side wall of the pipeline 1; a buckle 63, including a fixing rod 631, a wrench 632 and a buckle ring 633; ​​the fixing rod 631 is vertically inserted into one end of the guide rod 61; the wrench 632 is rotatably connected to the guide rod 631. 1. The end of the free end; the retaining ring 633 passes through the opening in the wrench 632 and rotates about the central axis of the opening; wherein, the opening is located on one side of the connection point between the wrench 632 and the guide rod 61, facing the free end of the wrench 632; wherein, in order to facilitate the use of the operator, the end of the wrench 632 is designed with a streamlined structure to improve the user's comfort; further, in order to improve the stability of the guide rod 61, the guide rod 61 passes through the mounting plate 62, and a nut is threadedly connected to the end near the mounting plate 62.

[0031] Reference Figure 3 When fixing the valve body 2 with the quick-release assembly, the guide rod 61 needs to be passed through the pipe 1 and the valve body 2 first, and the guide rod 61 needs to be fixed with a nut; then, the buckle 63 is lifted up so that the buckle 633 is loosely attached to the corner of the mounting plate 62; then, the wrench 632 is pulled down so that the buckle 633 firmly pulls the mounting plate 62; thus, the valve body 2 and the pipe 1 are tightly fixed together; conversely, when it is necessary to remove the valve body 2, the above operation is reversed and the guide rod 61 is pulled out to complete the disassembly of the valve body 2; thereby, the valve body 2 can be quickly disassembled and assembled, which effectively improves the ease of use of this device.

[0032] As another implementation, in order to reduce the manufacturing cost of additional quick-release components, the valve body 2 of the pressure detection device provided in this utility model can also be detachably connected to the pipeline 1 by conventional bolts when in use.

[0033] Working principle:

[0034] First, fix the valve body 2 after maintenance to one side of the pipeline 1; then pass the guide rod 61 through the pipeline 1 and the valve body 2, and fix the guide rod 61 with a nut;

[0035] Then, lift the latch 63 so that the buckle 633 is loosely attached to the corner of the ramp 62; then, pull the wrench 632 downward so that the buckle 633 firmly pulls the ramp 62; thus, the valve body 2 and the pipe 1 are tightly fixed together.

[0036] Finally, the control pressure inlet pipe 4 injects gas into the inside of pipe 1 to simulate the actual pressurized load condition, so that valve body 2 can directly simulate the working condition. If the pressure gauge 5 value is correct, it means that valve body 2 has been repaired; otherwise, valve body 2 needs to be repaired again.

[0037] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An offline pressure testing device for oxygen and nitrogen valves; characterized in that, include: Pipeline (1); one end of the pipeline (1) is sealed by a blind flange (3); the other end of the pipeline (1) is detachably connected to a valve body (2) to be tested. A pressure inlet pipe (4) passes through the blind plate (3) and is located at the end of the pipe (1); A pressure gauge (5) is installed on the blind plate (3), and its interface is connected to the inside of the pipe (1).

2. The offline pressure detection device for oxygen and nitrogen valves according to claim 1, characterized in that, The valve body (2) is connected to a compressed air pipe.

3. The offline pressure detection device for oxygen and nitrogen valves according to claim 1, characterized in that, A quick-release assembly is provided at the connection between the valve body (2) and the pipeline (1); multiple sets of the quick-release assembly are arranged in a ring array around the central axis of the pipeline (1); wherein, the quick-release assembly includes: The guide rod (61) passes through the screw holes at the pipe (1) and valve body (2) in sequence; A ramp (62) is fixedly mounted on the pipe (1); the ramp (62) is designed as an L-shaped structure, with its side edge attached to the side wall of the pipe (1); The latch (63) includes a fixing rod (631), a wrench (632), and a buckle (633); the fixing rod (631) is vertically inserted into one end of the guide rod (61); the wrench (632) is rotatably connected to the free end of the guide rod (61); the buckle (633) passes through an opening in the wrench (632) and rotates around the central axis of the opening; wherein, the opening is located on one side of the connection point between the wrench (632) and the guide rod (61) and is set towards the free end of the wrench (632).

4. The offline pressure detection device for oxygen and nitrogen valves according to claim 3, characterized in that, The end of the wrench (632) is configured with a streamlined structure.

5. The offline pressure detection device for oxygen and nitrogen valves according to claim 3, characterized in that, The guide rod (61) passes through the mounting plate (62) and has a nut threadedly connected to its end near the mounting plate (62).

6. The offline pressure detection device for oxygen and nitrogen valves according to claim 1, characterized in that, The valve body (2) is detachably connected to the pipe (1) by bolts.

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