Detection device for detecting effectiveness of nitrogen-sealed valve

Abstract

The utility model discloses a detection device for detecting effectiveness of a nitrogen-sealed valve, which comprises a pressure gas supply device, the nitrogen-sealed valve and a gas storage tank, the pressure gas supply device is communicated with the nitrogen-sealed valve through a gas delivery pipe, and a pressure reducing valve is arranged on the gas delivery pipe. One end, far away from the pressure gas supply device, of the nitrogen-sealed valve is communicated with a gas storage tank; and an exhaust valve and a pressure gauge are arranged at the top of the gas storage tank. The device can be used for detecting the effectiveness of a newly purchased nitrogen-sealed valve; the nitrogen-sealed valve which is detached after being used can be detected; and an effective detection means for the nitrogen-sealed valve in the full-life-cycle management of safety facilities is provided. The nitrogen-sealed valve is detected through the device, and a chemical enterprise can verify the effectiveness of the nitrogen-sealed valve in time, so that the safety of the storage tank is ensured, combustion and explosion accidents of the storage tank are prevented, and meanwhile, the production efficiency and the resource utilization rate are optimized.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical safety equipment detection, in particular to a detection device for detecting the effectiveness of a nitrogen sealing valve. Background Art

[0002] In the field of chemical equipment, in order to block the three elements of combustion, combustibles, combustion-supporting materials (usually oxygen) and ignition sources, inertization measures are usually used to protect storage tanks. These mainly include the use of nitrogen replacement, nitrogen purging, and the installation of nitrogen sealing valves on the top of the storage tanks. The purpose of installing nitrogen sealing valves is to maintain a slightly positive pressure state of nitrogen in the storage tank, thereby isolating the material from the outside world, reducing material volatilization and loss, and ensuring the safety of the storage tank by reducing the oxygen content.

[0003] However, during the production process, since the nitrogen sealing valve needs to be opened and closed frequently for a long time, leakage or failure may occur, which may cause the oxygen content in the storage tank to exceed the standard and bring safety hazards. Therefore, it is particularly important to regularly test the effectiveness of the nitrogen sealing valve installed on the storage tank. Utility Model Content

[0004] In view of this, an object of the present invention is to provide a detection device for detecting the effectiveness of a nitrogen sealing valve, so as to solve one or more of the above-mentioned problems in the prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides a detection device for detecting the effectiveness of a nitrogen sealing valve, comprising a pressure gas supply device, a nitrogen sealing valve and a gas storage tank, the pressure gas supply device is connected to the nitrogen sealing valve through a gas pipe, a pressure reducing valve is provided on the gas pipe, one end of the nitrogen sealing valve away from the pressure gas supply device is connected to the gas storage tank, and an exhaust valve and a pressure gauge are provided on the top of the gas storage tank.

[0006] In some embodiments, the pressure gas supply device is an air compressor or an inert gas cylinder.

[0007] In some embodiments, the pressure reducing valve is selected from a proportional pressure reducing valve, a Yk43X / F / Y type pilot piston gas pressure reducing valve, a YB410, YB416, YB425 type pressure reducing and stabilizing valve, a piston type adjustable pressure reducing and stabilizing valve, or a diaphragm type adjustable pressure reducing and stabilizing valve.

[0008] In some embodiments, the exhaust valve is selected from one of a float type exhaust valve, a float lever type exhaust valve, or a cylinder type exhaust valve.

[0009] In some embodiments, the pressure gauge is selected from a vacuum gauge, a pressure vacuum gauge, a micro-pressure gauge, a low-pressure gauge, a medium-pressure gauge, or a high-pressure gauge.

[0010] In some embodiments, the pressure gauge is a micro pressure gauge.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] The utility model's special device for testing the effectiveness of nitrogen sealing valves can test the effectiveness of newly purchased nitrogen sealing valves; it can also test nitrogen sealing valves that have been disassembled after use; it provides a means of testing the effectiveness of nitrogen sealing valves in the full life cycle management of safety facilities. By testing nitrogen sealing valves with the above device, chemical companies can verify the effectiveness of nitrogen sealing valves in a timely manner to ensure the safety of storage tanks, prevent combustion and explosion accidents in storage tanks, and optimize production efficiency and resource utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The present invention is a schematic structural diagram of a detection device for detecting the effectiveness of a nitrogen sealing valve in one embodiment of the present invention. DETAILED DESCRIPTION

[0014] The utility model is described in detail below with reference to the accompanying drawings and specific embodiments.

[0015] Example

[0016] like Figure 1 Shown:

[0017] A detection device for detecting the effectiveness of a nitrogen sealing valve comprises a pressure gas supply device 10, a nitrogen sealing valve 30 and a gas storage tank 40, wherein the pressure gas supply device 10 is connected to the nitrogen sealing valve 30 through a gas transmission pipe, a pressure reducing valve 20 is arranged on the gas transmission pipe, one end of the nitrogen sealing valve 30 away from the pressure gas supply device 10 is connected to the gas storage tank 40, an exhaust valve 50 and a pressure gauge 60 are arranged on the top of the gas storage tank 40, wherein the pressure gas supply device 10 is an air compressor, the pressure reducing valve 20 is a proportional pressure reducing valve, the exhaust valve (0) is selected from a float exhaust valve, and the pressure gauge 60 is a micro pressure gauge.

[0018] In the embodiment of the utility model, a gas storage tank replaces a storage tank in actual production operation, and an exhaust valve replaces an exhalation valve on the storage tank. When the storage tank is fed, the excess pressure in the storage tank is released through the exhalation valve; when the storage tank is discharged, nitrogen is added to the storage tank through the nitrogen sealing valve to form nitrogen sealing inert protection.

[0019] Working principle:

[0020] The air compressor or inert gas cylinder produces pressurized gas, which reaches the pressure reducing valve through the gas pipeline; the opening of the pressure reducing valve is adjusted so that the intake pressure reaches the intake pressure requirement range designed for the nitrogen sealing valve; then, by observing the pressure on the micro-pressure gauge on the gas tank behind the nitrogen sealing valve and comparing it with the design pressure of the nitrogen sealing valve, it can be determined whether it meets the requirements and whether the nitrogen sealing valve is effective.

[0021] Specific process:

[0022] 1. Close the exhaust valve on the gas tank;

[0023] 2. Turn on the air compressor (or inert gas cylinder) to provide air pressure, and reduce the pressure to the nitrogen sealing valve inlet pressure range P1 through the gas pipeline to the pressure reducing valve. Observe whether the pressure on the micro pressure gauge meets the pressure requirement P2 after the nitrogen sealing valve is decompressed. If P2 meets the requirement, it means that the nitrogen sealing valve decompression function is normal.

[0024] 3. Open the exhaust valve and observe whether the pressure on the micro-pressure gauge decreases and eventually reaches 0 Pa. Then close the exhaust valve and observe whether the pressure on the micro-pressure gauge returns to the pressure requirement P2 after the nitrogen sealing valve is decompressed. If the pressure P2 can be restored, it means that the nitrogen sealing valve can continue to replenish nitrogen after the tank pressure is reduced.

[0025] The dedicated device for detecting the effectiveness of a nitrogen sealing valve in the embodiment of the utility model can detect the effectiveness of a newly purchased nitrogen sealing valve; it can also detect a nitrogen sealing valve that has been disassembled after use; and it provides a quantitative detection method for the effectiveness of a nitrogen sealing valve in the full life cycle management of safety facilities.

[0026] Finally, it should be noted that: technicians in this industry should understand that the utility model is not limited to the above-mentioned implementation cases. The above-mentioned embodiments and descriptions only illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements must fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A detection device for detecting the effectiveness of a nitrogen sealing valve, characterized in that: The invention comprises a pressure gas supply device (10), a nitrogen sealing valve (30) and a gas storage tank (40); the pressure gas supply device (10) is connected to the nitrogen sealing valve (30) via a gas transmission pipe; a pressure reducing valve (20) is arranged on the gas transmission pipe; one end of the nitrogen sealing valve (30) away from the pressure gas supply device (10) is connected to the gas storage tank (40); and an exhaust valve (50) and a pressure gauge (60) are arranged on the top of the gas storage tank (40).

2. A detection device for detecting the effectiveness of a nitrogen sealing valve as claimed in claim 1, characterized in that: The pressure gas supply device (10) is an air compressor or an inert gas cylinder.

3. A detection device for detecting the effectiveness of a nitrogen sealing valve as claimed in claim 1, characterized in that: The pressure reducing valve (20) is selected from a proportional pressure reducing valve, a Yk43X / F / Y type pilot piston type gas pressure reducing valve, a YB410, YB416, YB425 type pressure reducing and stabilizing valve, a piston type adjustable pressure reducing and stabilizing valve or a diaphragm type adjustable pressure reducing and stabilizing valve.

4. A detection device for detecting the effectiveness of a nitrogen sealing valve as claimed in claim 1, characterized in that: The exhaust valve (50) is selected from one of a float type exhaust valve, a float lever type exhaust valve or a cylinder type exhaust valve.

5. A detection device for detecting the effectiveness of a nitrogen sealing valve as claimed in claim 1, characterized in that: The pressure gauge (60) is selected from a vacuum gauge, a pressure vacuum gauge, a micro-pressure gauge, a low-pressure gauge, a medium-pressure gauge or a high-pressure gauge.

6. A detection device for detecting the effectiveness of a nitrogen sealing valve as claimed in claim 5, characterized in that: The pressure gauge (60) is a micro pressure gauge.

Images