A safety valve suitable for on-line detection of petroleum storage tank

Abstract

The utility model discloses a kind of safety valves suitable for on-line detection of oil storage tank, it includes: safety valve main body, the left side middle lower portion of safety valve main body is connected with pressure relief pipe, the bottom end of safety valve main body is connected with plug valve, the bottom end of plug valve is connected with lead-through pipe, the bottom end of lead-through pipe is fixed communication with oil storage tank, the lower portion of the right side of safety valve main body is connected with cylinder pipe, the right side of cylinder pipe is fixedly connected with electric push rod, the left side output end of electric push rod slides into the inside of cylinder pipe and its upper fixedly connected with pressurizing head, the left side of pressurizing head is fixedly connected with pressure sensor, the pressure sensor is contacted with oil medium in cylinder pipe and is pressed to left, the right side of electric push rod is fixedly connected with pressure display, while not affecting the internal pressure of oil storage tank, safety valve is rapidly on-line detected, improve operation safety.

Description

Technical Field

[0001] This utility model relates to the field of safety valve technology, and in particular to a safety valve suitable for online monitoring of oil storage tanks. Background Technology

[0002] A safety valve is an automatic valve that discharges a predetermined amount of fluid without any external force, relying solely on the force of the medium itself to prevent the pressure from exceeding a predetermined safety value. Once the pressure returns to normal, the valve closes again, stopping further flow of the medium. It is suitable for pressure-bearing special equipment such as storage tanks and pressure vessels. To avoid the risk of high pressure inside the tank due to safety valve blockage, corrosion, or failure, it is necessary to conduct regular inspections of the safety valves to ensure their normal operation. Common inspection methods are divided into offline verification and online verification. Online verification can be performed during equipment operation and can detect safety valve problems in a timely manner, but it will temporarily increase the pressure inside the tank, which poses certain safety hazards for flammable and explosive storage media such as oil storage tanks. Utility Model Content

[0003] The purpose of this invention is to provide a safety valve suitable for online detection of oil storage tanks, which can quickly detect the safety valve online without affecting the internal pressure of the oil storage tank, thereby improving operational safety.

[0004] To achieve the above objectives, a safety valve suitable for online monitoring of oil storage tanks is provided, comprising: a safety valve body; a pressure relief pipe fixedly connected to the lower left side of the safety valve body; a gate valve fixedly connected to the bottom end of the safety valve body; a guide pipe fixedly connected to the bottom end of the gate valve; the bottom end of the guide pipe being fixedly connected to the oil storage tank; a cylinder fixedly connected to the lower right side of the safety valve body; an electric push rod fixedly connected to the right side of the cylinder; the left output end of the electric push rod slidingly extending into the inside of the cylinder and a pressure head fixedly connected thereto; the outer side of the pressure head slidingly fitting against the cylinder; and a pressure sensor fixedly connected to the left side of the pressure head, the pressure sensor corresponding to the oil in the cylinder. When the medium is in contact with pressure, a pressure display is fixedly connected to the right side of the electric actuator. The pressure display receives the pressure signal from the pressure sensor and converts it into a corresponding pressure value for real-time display and recording. By installing a gate valve in the passage between the safety valve and the oil storage tank to temporarily cut off the flow and isolate the pressure transmission between the two, a tube is then connected in the blocked passage of the safety valve. The pressure head of the electric actuator and the pressure sensor work together to apply piston-like physical pressure to the oil medium in the safety valve. The pressure sensor detects the pressure change in real time and displays the pressure change value using the pressure display. Thus, the safety valve can be quickly monitored online without affecting the internal pressure of the oil storage tank, improving operational safety.

[0005] According to the aforementioned safety valve suitable for online monitoring of oil storage tanks, a guide pipe is fixedly connected to the left end of the pressure relief pipe, and a recovery tank is mounted on the lower left side of the guide pipe. A sealing sleeve is fixedly connected to the top of the recovery tank, and the top of the sealing sleeve engages with and is fixed to the guide pipe. This allows for convenient recovery of the oil medium discharged from the pressure relief pipe.

[0006] According to the aforementioned safety valve suitable for online monitoring of oil storage tanks, a pressure alarm is fixedly mounted on the upper left side of the sealing sleeve. A float is mounted directly below the pressure-receiving end of the pressure alarm, and the float extends downward into the recovery tank and slides vertically within it. This valve provides display and automatic alarm for the recovery tank before it overflows.

[0007] According to the aforementioned safety valve suitable for online monitoring of oil storage tanks, a dustproof pad is fixedly connected to the top of the float rod, and the top of the dustproof pad makes contact with the pressure-bearing end of the pressure alarm. This prevents dust from falling into the recovery tank while increasing the upward contact area with the pressure alarm.

[0008] According to the aforementioned safety valve suitable for online monitoring of oil storage tanks, a layer of insulating rubber is fixedly attached to the left side of the pressure sensor, and the outer side of the insulating rubber is slidably attached to the tank. This isolates the pressure sensor from the medium, preventing it from being damaged by prolonged immersion in oil.

[0009] According to the aforementioned safety valve suitable for online monitoring of oil storage tanks, a high-definition display screen is mounted on the right side of the pressure indicator, and a transparent diaphragm covers the outer surface of the high-definition display screen. This clearly displays pressure value changes, assisting in the accurate detection of pressurization.

[0010] According to the aforementioned safety valve suitable for online monitoring of oil storage tanks, the cylinder is made of thickened steel pipe to ensure stability under high pressure.

[0011] According to the aforementioned safety valve suitable for online monitoring of oil storage tanks, a sealing ring is fixedly surrounding the outer surface of the pressure head, and the outer surface of the sealing ring is pressed and sealed against the cylinder tube to prevent oil leakage and contamination of the electric actuator.

[0012] The above-mentioned solution has the following beneficial effects: In this invention, a slide gate valve is installed in the passage between the safety valve and the oil storage tank to temporarily cut off the flow and isolate the pressure transmission between the two. Then, a cylinder is connected in the passage where the safety valve is cut off, and a pressure head and pressure sensor with electric push rod are installed to apply piston-like physical pressure to the oil medium in the safety valve. The pressure sensor detects the pressure change in real time and the pressure change value is displayed by a pressure display. Thus, the safety valve can be quickly detected online without affecting the internal pressure of the oil storage tank, thereby improving operational safety.

[0013] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is an overall schematic diagram of a safety valve for online monitoring of oil storage tanks according to this utility model; Figure 2 This is a schematic diagram of the connection structure of a recovery tank in a safety valve for online detection of oil storage tanks according to this utility model; Figure 3 This is a schematic diagram of the connection structure of the slide gate valve in a safety valve suitable for online monitoring of oil storage tanks according to this utility model; Figure 4 This is a schematic diagram of the connection structure of an electric push rod in a safety valve for online monitoring of oil storage tanks, according to this utility model.

[0015] Legend: 1. Safety valve body; 2. Pressure relief pipe; 3. Flow guide pipe; 4. Recovery tank; 5. Sealing sleeve; 6. Pressure alarm; 7. Float rod; 8. Slide valve; 9. Flow guide pipe; 10. Tube; 11. Electric push rod; 12. Pressure head; 13. Pressure sensor; 14. Pressure display. Detailed Implementation

[0016] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0017] Reference Figure 1-4This utility model provides a safety valve suitable for online detection of oil storage tanks, including: a safety valve body 1, a pressure relief pipe 2 fixedly connected to the lower left side of the safety valve body 1, a gate valve 8 fixedly connected to the bottom end of the safety valve body 1, a guide pipe 9 fixedly connected to the bottom end of the gate valve 8, and the bottom end of the guide pipe 9 is connected and fixedly connected to the oil storage tank to temporarily cut off the flow and isolate the pressure transmission between the two.

[0018] A tube 10 is fixedly connected to the lower right side of the safety valve body 1. The tube 10 is made of thickened steel pipe. An electric push rod 11 is fixedly connected to the right side of the tube 10. The left output end of the electric push rod 11 slides into the inside of the tube 10 and a pressure head 12 is fixedly connected to it. The outer side of the pressure head 12 slides against the tube 10. A sealing ring is fixedly fixed around the outer side of the pressure head 12. The outer side of the sealing ring is pressed against the tube 10 for sealing. A pressure sensor 13 is fixedly connected to the left side of the pressure head 12. The pressure sensor 13 is in contact with the oil medium inside the tube 10 and is pressurized. A pressure display 14 is fixedly connected to the right side of the rod 11. The pressure display 14 receives the pressure signal from the pressure sensor 13 and converts it into a corresponding pressure value for real-time display and recording. A layer of insulating rubber is fixedly attached to the left side of the pressure sensor 13. The outer side of the insulating rubber is slidably attached to the cylinder. A high-definition display screen is mounted on the right side of the pressure display 14. A transparent diaphragm covers the outer side of the high-definition display screen. The oil medium in the safety valve is physically pressurized by a piston, and the pressure sensor 13 detects the pressure change in real time and displays the pressure change value using the pressure display 14.

[0019] The left end of the pressure relief pipe 2 is connected to and fixed with a guide pipe 3. A recovery tank 4 is mounted on the lower left side of the guide pipe 3. A sealing sleeve 5 is connected to and fixed on the top of the recovery tank 4. The top of the sealing sleeve 5 is engaged with and fixed to the guide pipe 3. A pressure alarm 6 is fixedly mounted on the upper left side of the sealing sleeve 5. A float 7 is mounted directly below the pressure-receiving end of the pressure alarm 6. The float 7 extends downward into the recovery tank 4 and slides up and down with it. A dustproof pad is fixedly connected to the top of the float 7. The top of the dustproof pad is in contact with the pressure-receiving end of the pressure alarm 6. This system can centrally recover the oil medium discharged after pressure relief and provide an overflow warning to avoid oil leakage, waste, and pollution problems.

[0020] Working principle: In this utility model, a slide gate valve 8 is installed in the passage between the safety valve and the oil storage tank to temporarily cut off the flow and isolate the pressure transmission between the two. Then, a cylinder 10 is connected in the passage where the safety valve is cut off, and the pressure head 12 of the electric push rod 11 and the pressure sensor 13 are connected to the cylinder to perform piston-like physical pressurization on the oil medium in the safety valve. The pressure sensor 13 detects the pressure change in real time and the pressure display 14 is used to display the pressure change value. Thus, the safety valve can be quickly detected online without affecting the internal pressure of the oil storage tank, thereby improving the safety of operation.

[0021] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A safety valve suitable for online monitoring of oil storage tanks, comprising: The safety valve body (1) is characterized in that a pressure relief pipe (2) is fixedly connected to the lower left side of the safety valve body (1), a slide gate valve (8) is fixedly connected to the bottom end of the safety valve body (1), a guide pipe (9) is fixedly connected to the bottom end of the slide gate valve (8), and the bottom end of the guide pipe (9) is fixedly connected to the oil storage tank. A cylinder (10) is fixedly connected to the lower right side of the safety valve body (1), and an electric push rod (11) is fixedly connected to the right side of the cylinder (10). The left output end of the electric push rod (11) slides into the cylinder. A pressure head (12) is fixedly connected to the inner side of the tube (10). The outer side of the pressure head (12) is slidably attached to the tube (10). A pressure sensor (13) is fixedly connected to the left side of the pressure head (12). The pressure sensor (13) is in contact with the oil medium in the tube (10) to the left and is pressurized. A pressure display (14) is fixedly connected to the right side of the electric push rod (11). The pressure display (14) receives the pressure signal from the pressure sensor (13) and converts it into the corresponding pressure value for real-time display and recording.

2. A safety valve for online monitoring of oil storage tanks according to claim 1, characterized in that, The left end of the pressure relief pipe (2) is connected to and fixed with a guide pipe (3). A recovery tank (4) is mounted on the lower left side of the guide pipe (3). A sealing sleeve (5) is connected to and fixed at the top of the recovery tank (4). The top of the sealing sleeve (5) is engaged and fixed with the guide pipe (3).

3. A safety valve for online monitoring of oil storage tanks according to claim 2, characterized in that, A pressure alarm (6) is fixedly mounted on the upper left side of the sealing sleeve (5). A float (7) is mounted directly below the pressure end of the pressure alarm (6). The float (7) extends downward into the inside of the recovery tank (4) and slides up and down with it.

4. A safety valve for online monitoring of oil storage tanks according to claim 3, characterized in that, A dustproof pad is fixedly connected to the top of the float (7), and the top of the dustproof pad is in contact with the pressure end of the pressure alarm (6).

5. A safety valve for online monitoring of oil storage tanks according to claim 1, characterized in that, A layer of insulating rubber is attached and fixed to the left side of the pressure sensor (13), and the outer side of the insulating rubber is slidably attached to the cylinder.

6. A safety valve for online monitoring of oil storage tanks according to claim 1, characterized in that, The pressure display (14) is equipped with a high-definition display screen on its right side, and the outer side of the high-definition display screen is covered with a transparent membrane.

7. A safety valve for online monitoring of oil storage tanks according to claim 1, characterized in that, The tube (10) is made of thickened steel pipe.

8. A safety valve for online monitoring of oil storage tanks according to claim 1, characterized in that, A sealing ring is fixed around the outer side of the pressure head (12), and the outer side of the sealing ring is pressed and sealed against the tube (10).

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