An integrated nitrogen injection and oxygen control fire protection system device

Abstract

The invention relates to the technical field of oil tank fire prevention, and in particular to an integrated nitrogen injection and oxygen control fire prevention system device, comprising a nitrogen tank and an oil storage tank, wherein the inner wall of the oil storage tank is inlaid with an oil and gas probe, an exhaust pipe and a drainage conduit in sequence from top to bottom, the bottom surface of the nitrogen tank is connected with a nitrogen conduit, one end of the nitrogen conduit away from the nitrogen tank is connected with one end of the drainage conduit, a sealing plate and a sealing cloth are fixedly connected to the inner wall of the oil storage tank, a floating plate is movably connected to the surface of the sealing plate, the surface of the floating plate is fixedly connected to the surface of the sealing cloth, and a protective shell is fixedly connected to the surface of the oil storage tank; the invention uses an oil and gas concentration detector and a PLC controller, and when the oil and gas concentration in the gap between the sealing cloth, the sealing plate and the oil storage tank exceeds the standard, the oil and gas concentration detector can transmit a signal to the PLC controller, without the need to connect more complex pipelines, thereby achieving the effect of reducing the probability of pipeline damage and ensuring the normal operation of the safety system.

Description

Technical Field

[0001] The invention relates to the technical field of oil tank fire prevention, and in particular to an integrated nitrogen injection and oxygen control fire prevention system device. Background Art

[0002] Oil is an indispensable fuel in modern society. When storing oil or other light fuels, since oil will evaporate, floating roof storage tanks are often required to ensure that there is not too much oil and gas mixture in the tank to avoid safety problems.

[0003] Since the oil pan in the floating roof oil tank needs to move with the rise and fall of the oil level, there is often residual oil and gas in the space between the oil pan and the outer wall of the oil tank. An external safety protection system is needed to fill this space with inert gas to avoid explosions caused by excessive oil and gas concentrations. However, existing safety protection systems often require the use of a central monitoring host, a nitrogen supply device, and an oil and gas safety protection device to protect the oil tank. The required pipelines are relatively complex and long. In daily work, longer pipelines are more likely to be damaged, and problems are difficult to detect, affecting the normal operation of the subsequent safety system as a whole. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides an integrated nitrogen injection and oxygen control fire protection system device, which has the advantages of integrating multiple components required in the system, reducing the probability of pipeline damage, and ensuring the normal operation of the safety system, thus solving the problem of high probability of pipeline damage in existing safety protection devices.

[0005] The integrated nitrogen injection and oxygen control fire prevention system device of the present invention comprises a nitrogen tank and an oil storage tank. The inner wall of the oil storage tank is inlaid with oil and gas probes, an exhaust pipe and a drainage duct in sequence from top to bottom. The bottom surface of the nitrogen tank is connected with the nitrogen duct. The end of the nitrogen duct away from the nitrogen tank is connected with one end of the drainage duct. The inner wall of the oil storage tank is fixedly connected with a sealing plate and a sealing cloth. The surface of the sealing plate is movably connected with a floating plate. The surface of the floating plate is fixedly connected with the surface of the sealing cloth. The surface of the oil storage tank is fixedly connected with a protective shell. The inner wall of the protective shell is fixedly connected with an isolation plate. The top surface of the isolation plate is fixedly connected with an oil and gas concentration detector and a PLC controller. The surface of the oil and gas concentration detector is connected with one end of the oil and gas probe. The inner wall of the protective shell is inlaid with a filtering inclined tube. The surface of the filtering inclined tube is connected with one end of the exhaust pipe. The surface of the exhaust pipe is provided with an exhaust pump. The inner wall of the protective shell is fixedly connected with an electromagnetic valve. The output end of the electromagnetic valve passes through the surface of the drainage duct and extends to the inside of the drainage duct. The drainage duct is connected with the filtering inclined tube through a pipeline.

[0006] The integrated nitrogen injection and oxygen control fire prevention system device of the present invention has a photovoltaic panel fixedly connected to the top surface of the protective shell, a storage battery fixedly connected to the top surface of the inner cavity of the protective shell, and the storage battery is electrically connected to the photovoltaic panel through wires.

[0007] The integrated nitrogen injection and oxygen control fire prevention system device of the present invention has a PLC controller which is electrically connected to the battery, the oil and gas concentration detector, the air pump and the electromagnetic valve surface.

[0008] The integrated nitrogen injection and oxygen control fire prevention system device of the present invention comprises six protective shells and six drainage ducts, and one protective shell and one drainage duct form a group. The six groups of protective shells and drainage ducts are evenly distributed on the surface of the oil storage tank with the central axis of the top surface of the oil storage tank as the circle.

[0009] The integrated nitrogen injection oxygen control fire prevention system device of the present invention has an annular conduit connected to the surface of the nitrogen conduit, and the annular conduit is connected to the bottom ends of the six drainage conduits through the nitrogen conduit.

[0010] The integrated nitrogen injection oxygen control fire prevention system device of the present invention has an L-shaped front cross-section of the drainage duct, and a drainage plate is fixedly connected to the inner wall corner of the drainage duct, and the drainage plate is located directly below the connecting pipe between the drainage duct and the filtering inclined tube.

[0011] The integrated nitrogen injection and oxygen control fire prevention system device of the present invention has a heat dissipation pipe fixedly connected to the surface of the filtering inclined tube, an infusion pipe connected to the surface of the heat dissipation pipe, an end of the infusion pipe away from the heat dissipation pipe is connected to an annular water tank, a water pump is arranged on the surface of the infusion pipe, and the sides of the annular water tank and the water pump are fixedly connected to the surface of the protective shell.

[0012] The integrated nitrogen injection and oxygen control fire prevention system device of the present invention has an inner wall of the filter inclined tube fixedly connected with a blocking inclined plate, an end of the filter inclined tube away from the protective shell is threadedly connected with a filter cover, and a filter screen is arranged on the surface of the filter cover.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The present invention uses an oil and gas concentration detector and a PLC controller. When the oil and gas concentration in the gap between the sealing cloth, the sealing plate and the oil storage tank exceeds the standard, the oil and gas concentration detector can transmit a signal to the PLC controller. The PLC controller then controls the vacuum pump and the solenoid valve to start, and the excess oil and gas in the oil storage tank can be sucked into the filter inclined tube. The petroleum vapor can flow from the filter inclined tube into the drainage conduit and be sprayed into the oil storage tank together with the nitrogen in the nitrogen conduit, so that other components in the existing protection system can be integrated together without the need for more complex external pipelines, thereby achieving the effect of reducing the probability of pipeline damage and ensuring the normal operation of the safety system.

[0015] 2. The present invention uses a barrier inclined plate and a heat dissipation pipe to reduce the internal temperature of the filter inclined tube when oil and gas enter the filter inclined tube, so that the oil vapor can be converted into liquid and attached to the barrier inclined plate again, which is convenient for the subsequent recovery of the oil vapor. The photovoltaic panel and the battery can store electricity that can be provided to the PLC controller and the oil and gas concentration detector during the day, and there is no need to connect additional transformers and wires to ensure the normal operation of the PLC controller. The internal parts of the safety protection system are integrated while ensuring that the device is energy-saving and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 This is a schematic diagram of the front section structure of the integrated nitrogen injection and oxygen control fire protection system;

[0018] Figure 2 This is a schematic diagram of the front section structure of the protective shell;

[0019] Figure 3 This is a schematic diagram of the structure of the oil storage tank from a bird's-eye view;

[0020] Figure 4 for Figure 2 Enlarged structural diagram at A in the middle.

[0021] In the figure: 1. nitrogen tank; 2. oil storage tank; 3. oil and gas probe; 4. exhaust pipe; 5. drainage duct; 6. nitrogen duct; 7. sealing plate; 8. sealing cloth; 9. floating plate; 10. protective shell; 11. isolation plate; 12. oil and gas concentration detector; 13. PLC controller; 14. filter inclined tube; 15. exhaust pump; 16. solenoid valve; 17. photovoltaic panel; 18. battery; 19. annular duct; 20. drainage plate; 21. heat dissipation pipe; 22. infusion tube; 23. annular water tank; 24. water pump; 25. barrier inclined plate; 26. filter cover. DETAILED DESCRIPTION

[0022] The following will disclose multiple embodiments of the present invention with drawings. For the purpose of clear description, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present invention. That is, in some embodiments of the present invention, these practical details are not necessary. In addition, for the purpose of simplifying the drawings, some conventional structures and components will be depicted in a simple schematic manner in the drawings.

[0023] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0024] See also Figure 1-4 The integrated nitrogen injection oxygen control fire prevention system device of the present invention comprises a nitrogen tank 1 and an oil storage tank 2. The inner wall of the oil storage tank 2 is inlaid with an oil and gas probe 3, an exhaust pipe 4 and a drainage conduit 5 in sequence from top to bottom. The bottom surface of the nitrogen tank 1 is connected with a nitrogen conduit 6. One end of the nitrogen conduit 6 away from the nitrogen tank 1 is connected with one end of the drainage conduit 5. The inner wall of the oil storage tank 2 is fixedly connected with a sealing plate 7 and a sealing cloth 8. The surface of the sealing plate 7 is movably connected with a floating plate 9. The surface of the floating plate 9 is fixedly connected with the surface of the sealing cloth 8. The surface of the tank 2 is fixedly connected with a protective shell 10, the inner wall of the protective shell 10 is fixedly connected with an isolation plate 11, the top surface of the isolation plate 11 is fixedly connected with an oil and gas concentration detector 12 and a PLC controller 13, the model of the PLC controller 13 is S7-200, the model of the oil and gas concentration detector 12 is GB12358-2006, the surface of the oil and gas concentration detector 12 is connected with one end of the oil and gas probe 3, the inner wall of the protective shell 10 is inlaid with a filter inclined tube 14, the surface of the filter inclined tube 14 is connected with One end of the air extraction pipe 4 is connected, and an air extraction pump 15 is arranged on the surface of the air extraction pipe 4. An electromagnetic valve 16 is fixedly connected to the inner wall of the protective shell 10. The output end of the electromagnetic valve 16 penetrates the surface of the drainage conduit 5 and extends to the inside of the drainage conduit 5. The drainage conduit 5 is connected with the filtering inclined tube 14 through a pipeline. Through the oil and gas concentration detector 12 and the PLC controller 13, when the oil and gas concentration in the gap between the sealing cloth 8, the sealing plate 7 and the oil storage tank 2 exceeds the standard, the oil and gas concentration detector 12 can transmit a signal to the PLC controller 13, and the PLC controller 13 immediately controls the air extraction pump 15 and the electromagnetic valve 16 to start, and the excess oil and gas in the oil storage tank 2 can be sucked into the filtering inclined tube 14, and the petroleum vapor can flow from the filtering inclined tube 14 into the drainage conduit 5, and be sprayed into the oil storage tank 2 together with the nitrogen in the nitrogen conduit 6, so that other components in the existing protection system can be integrated together, without the need for more complex pipelines, thereby achieving the effect of reducing the probability of pipeline damage and ensuring the normal operation of the safety system.

[0025] A photovoltaic panel 17 is fixedly connected to the top surface of the protective shell 10, and a battery 18 is fixedly connected to the top surface of the inner cavity of the protective shell 10. The battery 18 is electrically connected to the photovoltaic panel 17 through wires, and the PLC controller 13 is electrically connected to the battery 18, the oil and gas concentration detector 12, the air pump 15 and the solenoid valve 16. Through the photovoltaic panel 17 and the battery 18, electricity that can be provided to the PLC controller 13 and the oil and gas concentration detector 12 can be stored during the day, and there is no need to additionally connect a transformer and wires to ensure the normal operation of the PLC controller 13, thereby achieving the effect of integrating the internal parts of the safety protection system while ensuring that the device is energy-saving and efficient.

[0026] There are six protective shells 10 and six drainage ducts 5, and one protective shell 10 and one drainage duct 5 form a group. The six groups of protective shells 10 and drainage ducts 5 are evenly distributed on the surface of the oil storage tank 2 with the central axis of the top surface of the oil storage tank 2 as the circle, so that the oil and gas on the inner wall of the oil storage tank 2 can be evenly extracted, and nitrogen can be injected according to the oil and gas concentration at different positions of the oil storage tank 2, which is energy-saving and efficient.

[0027] The surface of the nitrogen conduit 6 is connected with an annular conduit 19, which is connected to the bottom ends of the six drainage conduits 5 through the nitrogen conduit 6, so that the six drainage conduits 5 can be connected to ensure the normal use of the nitrogen injection function of the device.

[0028] The front cross-section of the drainage duct 5 is L-shaped, and a drainage plate 20 is fixedly connected to the corner of the inner wall of the drainage duct 5. The drainage plate 20 is located directly below the connecting pipe between the drainage duct 5 and the filtering inclined tube 14, so that the oil separated in the filtering inclined tube 14 can be brought into the drainage duct 5 and injected into the oil storage tank 2 together under the drive of nitrogen, thereby avoiding waste of oil.

[0029] A heat dissipation pipe 21 is fixedly connected to the surface of the filter inclined tube 14, and a liquid infusion pipe 22 is connected to the surface of the heat dissipation pipe 21. The end of the liquid infusion pipe 22 away from the heat dissipation pipe 21 is connected to an annular water tank 23, and a water pump 24 is arranged on the surface of the liquid infusion pipe 22. The sides of the annular water tank 23 and the water pump 24 are fixedly connected to the surface of the protective shell 10. An insulating inclined plate 25 is fixedly connected to the inner wall of the filter inclined tube 14, and a filter cover 26 is threadedly connected to the end of the filter inclined tube 14 away from the protective shell 10. A filter screen is arranged on the surface of the filter cover 26. When oil and gas enter the filter inclined tube 14, the internal temperature of the filter inclined tube 14 can be reduced through the insulating inclined plate 25 and the heat dissipation pipe 21, so that the oil vapor can be converted into liquid again and attached to the insulating inclined plate 25, so as to facilitate the subsequent recovery of the oil vapor.

[0030] The connection circuit diagrams between the PLC controller 13 and the battery 18, the oil and gas concentration detector 12, the water pump 24, the air pump 15 and the solenoid valve 16 are all existing known technologies and do not need to be described in detail.

[0031] When using the present invention, if the oil and gas concentration exceeds the standard, the oil and gas probe 3 can collect the oil and gas concentration and transmit the signal to the PLC controller 13. Then the PLC controller 13 starts the water pump 24, the solenoid valve 16 and the vacuum pump 15. The vacuum pump 15 can draw the oil and gas in the oil storage tank 2 into the filter inclined tube 14 through the vacuum pipe 4. At this time, the water pump 24 continuously moves the water in the annular water tank 23 in the heat dissipation pipe 21, so that the temperature in the filter inclined tube 14 is reduced, and the oil and gas vapor can condense into liquid and adhere to the surface of the barrier inclined plate 25, and gradually flow into the drainage duct 5, driven by the nitrogen in the nitrogen duct 6, and injected into the oil storage tank 2 together, without the need to connect more equipment, reducing the safety hazards caused by pipeline damage.

[0032] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. An integrated nitrogen injection oxygen control fire prevention system device, comprising a nitrogen tank (1) and an oil storage tank (2), characterized in that: The inner wall of the oil storage tank (2) is inlaid with an oil and gas probe (3), an air extraction pipe (4) and a drainage conduit (5) in sequence from top to bottom; the bottom surface of the nitrogen tank (1) is connected to a nitrogen conduit (6); one end of the nitrogen conduit (6) away from the nitrogen tank (1) is connected to one end of the drainage conduit (5); a sealing plate (7) and a sealing cloth (8) are fixedly connected to the inner wall of the oil storage tank (2); a floating plate (9) is movably connected to the surface of the sealing plate (7); the surface of the floating plate (9) is in contact with the surface of the sealing cloth (8); The oil storage tank (2) is fixedly connected to a protective shell (10) on its surface, an isolation plate (11) is fixedly connected to the inner wall of the protective shell (10), an oil and gas concentration detector (12) and a PLC controller (13) are fixedly connected to the top surface of the isolation plate (11), the surface of the oil and gas concentration detector (12) is connected to one end of the oil and gas probe (3), the inner wall of the protective shell (10) is inlaid with a filtering inclined tube (14), and the surface of the filtering inclined tube (14) is connected to the exhaust pipe (4). The surface of the air extraction pipe (4) is provided with an air extraction pump (15); the inner wall of the protective housing (10) is fixedly connected to an electromagnetic valve (16); the output end of the electromagnetic valve (16) penetrates the surface of the drainage catheter (5) and extends into the interior of the drainage catheter (5); the drainage catheter (5) is connected to the filtering inclined tube (14) through a pipeline; the surface of the filtering inclined tube (14) is fixedly connected to a heat dissipation pipe (21); the surface of the heat dissipation pipe (21) is connected to an infusion tube (22); the infusion tube (22) One end of the liquid pipe (22) away from the heat dissipation pipe (21) is connected to an annular water tank (23); a water pump (24) is provided on the surface of the liquid infusion pipe (22); the side surfaces of the annular water tank (23) and the water pump (24) are fixedly connected to the surface of the protective housing (10); an insulating inclined plate (25) is fixedly connected to the inner wall of the filtering inclined pipe (14); one end of the filtering inclined pipe (14) away from the protective housing (10) is threadedly connected to a filtering cover (26); a filter screen is provided on the surface of the filtering cover (26).

2. The integrated nitrogen injection and oxygen control fire protection system device according to claim 1, characterized in that: The top surface of the protective shell (10) is fixedly connected to a photovoltaic panel (17), the top surface of the inner cavity of the protective shell (10) is fixedly connected to a storage battery (18), and the storage battery (18) is electrically connected to the photovoltaic panel (17) via an electric wire.

3. The integrated nitrogen injection and oxygen control fire protection system device according to claim 2 is characterized in that: The PLC controller (13) is electrically connected to the battery (18), the oil and gas concentration detector (12), the air pump (15) and the electromagnetic valve (16).

4. The integrated nitrogen injection and oxygen control fire prevention system device according to claim 1 is characterized in that: The number of the protective shells (10) and drainage ducts (5) is six, and one protective shell (10) and one drainage duct (5) form a group. The six groups of protective shells (10) and drainage ducts (5) are evenly distributed on the surface of the oil storage tank (2) with the central axis of the top surface of the oil storage tank (2) as a circle.

5. The integrated nitrogen injection and oxygen control fire prevention system device according to claim 1 is characterized in that: The surface of the nitrogen conduit (6) is connected to an annular conduit (19), and the annular conduit (19) is connected to the bottom ends of the six drainage conduits (5) through the nitrogen conduit (6).

6. The integrated nitrogen injection and oxygen control fire prevention system device according to claim 1, characterized in that: The front cross-section of the drainage duct (5) is L-shaped, and a drainage plate (20) is fixedly connected to the corner of the inner wall of the drainage duct (5), and the drainage plate (20) is located directly below the connecting pipe between the drainage duct (5) and the filtering inclined tube (14).

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