Ship-shore safety device and oil gas recovery system

Abstract

The utility model relates to a ship-shore safety device and an oil gas recovery system. The ship-shore safety device comprises a gas acquisition unit, a filtering unit, an anti-explosion unit, a gas output unit, a pressure relief unit and an inert gas input unit, the gas acquisition unit is detachably connected with a cabin oil and gas pipeline; the filtering unit is arranged at the downstream of the gas obtaining unit; the anti-explosion unit is arranged at the downstream of the filtering unit; the gas output unit is arranged at the downstream of the explosion-proof unit; the pressure relief unit is arranged between the gas acquisition unit and the filtering unit; the inert gas input unit is respectively communicated with the gas acquisition unit and the filtering unit. The device has the advantages that the oxygen monitoring element capable of being automatically closed is arranged, so that the later maintenance cost is reduced; and the inert gas input unit is arranged to purge the filtering unit, so that the later maintenance cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of ship oil and gas recovery, in particular to a ship-shore safety device and an oil and gas recovery system. Background Technique

[0002] To protect the safety of ships, wharves and oil and gas recovery devices, a set of ship-shore safety interface for oil and gas recovery is installed in the wharf loading and unloading area. After the ship docks, the external interface of the ship's oil and gas recovery is connected to the ship-shore safety interface through a pipeline and then enters the wharf gas collection main pipe, and the oil and gas is transported to the oil and gas recovery device for recovery and treatment. Other gases (even oxygen) are mixed in the oil and gas, and their concentration may be within the explosion limit range. Therefore, the safety requirements for the gas pipeline should be higher than those for the liquid pipeline. Oil and gas is a high-risk substance, and the spread of oil and gas combustion or explosion is extremely rapid. The ship-shore docking safety module can block the explosion and combustion that may and have occurred in the first time, and prevent the accidents on the ship side or the shore side from spreading to the other end.

[0003] The ship-shore safety device is a special equipment device installed at the wharf front to protect the safety of ships and on-board equipment in the oil and gas recovery operation of liquid cargo ships, and to protect the safety of the on-shore oil and gas treatment unit operation; its front end (intake end) is connected to a gas transmission arm or a hose, and the end (outlet end) is connected to the safety device of the gas transmission pipeline network.

[0004] Since the ship-shore interface device is used in the wharf and the goods loaded and unloaded are all inflammable and explosive gases, the higher the accuracy of monitoring the oxygen content in the gas, the better, so as to avoid the occurrence of fires and explosions. However, the existing ship-shore interface devices at present cannot monitor the gas, which increases the possibility of accidents.

[0005] The ship-shore safety interface is required to be equipped with reliable and perfect safety equipment to protect the safety of personnel and equipment; the ship-shore safety interface should be configured with lightning protection, static electricity prevention and other facilities; the ship-shore safety interface should be equipped with two oxygen content sensors, and the oxygen content sensors should have the function of outputting detection data in real time and providing signals to the ship-shore safety interface control system. One of them is installed on the main pipeline between the intake end of the ship-shore safety interface and the inert gas inlet pipe, and the distance from the intake end of the ship-shore safety interface should not exceed 6m to detect the oxygen content of the oil and gas in the cabin; the other oxygen content sensor is installed before the outlet end of the main pipeline of the ship-shore safety interface to detect the oxygen content of the oil and gas in the main pipeline after the inert gas is supplemented; the ship-shore safety interface should arrange an exhaust pipe between the intake end pressure sensor and the cut-off valve, and a pressure / vacuum relief valve and an electric unloading valve should be set at the top of the exhaust pipe.

[0006] At present, in view of the problems in the related technology such as the lack of a pressure regulating device in the inert gas pipeline, the lack of a cleaning device in the gas-liquid separator, and the easy damage of the oxygen content sensor, no effective solution has been proposed. Content of the Utility Model

[0007] The purpose of the present utility model is to address the deficiencies in the prior art and provide a ship-shore safety device and an oil and gas recovery system to solve problems such as the absence of a pressure regulating device in the inert gas pipeline, the absence of a cleaning device in the gas-liquid separator, and the easy damage of the oxygen content sensor in the related art.

[0008] To achieve the above object, the technical solution adopted by the present utility model is as follows:

[0009] In a first aspect, a ship-shore safety device is provided, including:

[0010] A gas acquisition unit, which is detachably connected to the oil and gas pipeline of the cabin and is used to input oil and gas into the ship-shore safety device;

[0011] A filtering unit, which is arranged downstream of the gas acquisition unit and is used to separate gas and liquid from the oil and gas;

[0012] An explosion-proof unit, which is arranged downstream of the filtering unit and is used to prevent the detonation combustion of the flame;

[0013] A gas output unit, which is arranged downstream of the explosion-proof unit and is used to transport the oil and gas to the oil and gas recovery device;

[0014] A pressure relief unit, which is arranged between the gas acquisition unit and the filtering unit and is used to perform emergency pressure relief when the pressure of the ship-shore safety device is higher or lower than the safety value;

[0015] An inert gas input unit, which is respectively connected to the gas acquisition unit and the filtering unit and is used to transport inert gas to the gas acquisition unit and the filtering unit respectively to reduce the oxygen content of the ship-shore safety device.

[0016] In some of these embodiments, the gas acquisition unit includes:

[0017] A gas acquisition element, which is respectively connected to the oil and gas pipeline of the cabin, the filtering unit, the pressure relief unit, and the inert gas input unit and is used to input oil and gas into the ship-shore safety device;

[0018] A first control valve element, which is arranged on the gas acquisition element and is used to control the opening and closing of the gas acquisition element;

[0019] A first check element, which is arranged on the gas acquisition element and is located downstream of the first control valve element and is used to prevent the backflow of the oil and gas entering the gas acquisition element;

[0020] The first oxygen monitoring element, which is in communication with the gas acquisition element and is used to detect the oxygen content in the oil and gas pipeline of the cabin.

[0021] In some of these embodiments, the gas acquisition unit further includes:

[0022] The first flange element, which is arranged at the intake end of the gas acquisition element and is used for insulation.

[0023] In some of these embodiments, the gas acquisition unit further includes:

[0024] The first pressure monitoring element, which is in communication with the gas acquisition element and is located upstream of the communication position between the gas acquisition element and the pressure relief unit, and is used to detect the internal pressure of the gas acquisition element.

[0025] In some of these embodiments, the gas acquisition unit further includes:

[0026] The second pressure monitoring element, which is in communication with the gas acquisition element and is located downstream of the communication position between the gas acquisition element and the pressure relief unit, and is used to detect the pressure of the oil and gas entering the filtration unit.

[0027] In some of these embodiments, the gas acquisition unit further includes:

[0028] At least one third pressure monitoring element, which is in communication with the gas acquisition element and is located upstream of the communication position between the gas acquisition element and the pressure relief unit, and is used to detect the pressure difference inside the gas acquisition element.

[0029] In some of these embodiments, the filtration unit includes:

[0030] The filtration element, which is arranged downstream of the gas acquisition unit and is respectively in communication with the gas acquisition unit, the explosion-proof unit, and the inert gas input unit, and is used for gas-liquid separation of the oil and gas.

[0031] In some of these embodiments, the filtration unit further includes:

[0032] The first emergency control element, which is arranged at the intake end of the filtration element and is used to prevent the oil and gas from entering the filtration element in an emergency.

[0033] In some of these embodiments, the filtration unit further includes:

[0034] The liquid level monitoring element, which is in communication with the filtration element and is used to detect the liquid level height of the filtration element.

[0035] In some of these embodiments, the explosion-proof unit includes:

[0036] An explosion-proof element, which is arranged downstream of the filtering unit and is respectively communicated with the filtering unit and the gas output unit, and is used to prevent the detonation combustion of the flame.

[0037] In some of these embodiments, the explosion-proof unit further includes:

[0038] At least one temperature monitoring element, which is communicated with the explosion-proof element and is used to detect the temperature of the explosion-proof element.

[0039] In some of these embodiments, the gas output unit includes:

[0040] A gas output element, which is arranged downstream of the explosion-proof unit and is communicated with the explosion-proof unit, and is used to convey oil and gas to the oil and gas recovery device;

[0041] A second oxygen monitoring element, which is communicated with the gas output element and is used to detect the oxygen content of the oil and gas entering the oil and gas recovery device.

[0042] In some of these embodiments, the gas output unit further includes:

[0043] A second flange element, which is arranged at the gas outlet end of the gas output element and is connected with the oil and gas recovery device.

[0044] In some of these embodiments, the gas output unit further includes:

[0045] A flow rate monitoring element, which is communicated with the gas output element and is used to detect the flow rate of the oil and gas entering the oil and gas recovery device.

[0046] In some of these embodiments, the pressure relief unit includes:

[0047] A first pressure relief element, which is arranged between the gas acquisition unit and the filtering unit and is communicated with the gas acquisition unit, and is used to perform emergency pressure relief when the pressure of the ship-shore safety device is higher or lower than the safety value;

[0048] A pressure release element, which is arranged on the first pressure relief element and is used to be emergently opened when the oil and gas oxygen content of the gas acquisition unit reaches the explosion limit value or the pressure exceeds the limit.

[0049] In some of these embodiments, the pressure relief unit further includes:

[0050] A second pressure relief element, the second pressure relief element communicating with the first pressure relief element;

[0051] A second emergency control element, the second emergency control element being disposed on the second pressure relief element and configured to be emergently opened when the oil-gas-oxygen content of the ship-shore safety device reaches the explosion limit or the pressure exceeds the limit;

[0052] A flame arrester element, the flame arrester element being disposed at the exhaust end of the second pressure relief element and configured to prevent the detonation combustion of the flame.

[0053] In some embodiments thereof, the inert gas input unit includes:

[0054] A first inert gas input element, the first inert gas input element communicating with the gas acquisition unit and configured to supply inert gas to the ship-shore safety device;

[0055] A second control valve element, the second control valve element being disposed on the first inert gas input element and configured to control the opening or closing of the first inert gas input element;

[0056] A second check element, the second check element being disposed on the first inert gas input element and downstream of the second control valve element and configured to prevent the gas entering the first inert gas input element from flowing back;

[0057] A third control valve element, the third control valve element being disposed on the first inert gas input element and downstream of the second check element and configured to connect or close the first inert gas input element and the gas acquisition unit;

[0058] A second inert gas input element, the second inert gas input element communicating with the first inert gas input element and the filtering unit respectively and being downstream of the second check element and configured to supply inert gas to the filtering unit for purging;

[0059] A fourth control valve element, the fourth control valve element being disposed on the second inert gas input element and configured to open or close the second inert gas input element.

[0060] In some embodiments thereof, the inert gas input unit further includes:

[0061] An adjusting element, the adjusting element being disposed on the first inert gas input element and downstream of the second check element and upstream of the third control valve element and configured to adjust the internal pressure of the first inert gas input element

[0062] In some embodiments thereof, the inert gas input unit further includes:

[0063] A pressure reducing element, which is arranged on the first inert gas input element, downstream of the second check element and upstream of the third control valve element, for reducing pressure.

[0064] In some of the embodiments, it further includes:

[0065] A liquid discharge unit, which is communicated with the filtration unit, for discharging the liquid of the filtration unit.

[0066] In some of the embodiments, the liquid discharge unit includes:

[0067] A liquid discharge element, which is communicated with the filtration unit, for discharging the liquid of the filtration unit;

[0068] A fifth control valve element, which is arranged on the liquid discharge element, for closing or opening the liquid discharge element.

[0069] In some of the embodiments, it further includes:

[0070] A central control unit, which is respectively in communication connection with the gas acquisition unit, the filtration unit, the explosion-proof unit, the gas output unit, the pressure relief unit, and the inert gas input unit.

[0071] In some of the embodiments, the central control unit includes:

[0072] A central control element, which is respectively in communication connection with the gas acquisition unit, the filtration unit, the explosion-proof unit, the gas output unit, the pressure relief unit, and the inert gas input unit.

[0073] In some of the embodiments, the central control unit further includes:

[0074] An alarm element, which is in communication connection with the central control element, for giving an alarm.

[0075] In some of the embodiments, the central control unit further includes:

[0076] An explosion-proof element, which is arranged to cover the central control element, for protection.

[0077] In some of the embodiments, it further includes:

[0078] A base unit, which is arranged on a horizontal plane, for installing the gas acquisition unit, the filtration unit, the explosion-proof unit, the gas output unit, the pressure relief unit, and the inert gas input unit.

[0079] In some of these embodiments, the base unit further comprises:

[0080] a base element, the base element being disposed on a horizontal plane;

[0081] a plurality of support elements, the plurality of support elements being respectively disposed on the upper part of the base element and respectively connected to the gas acquisition unit and the gas output unit;

[0082] a plurality of connection elements, the plurality of connection elements being respectively connected to the gas acquisition unit, the gas output unit, and the corresponding support elements.

[0083] In a second aspect, there is provided an oil and gas recovery system, comprising:

[0084] the ship-shore safety device as described in the first aspect.

[0085] In some of these embodiments, it further comprises:

[0086] an oil and gas recovery device, the oil and gas recovery device being in communication with the gas output unit for recovering oil and gas.

[0087] In some of these embodiments, it further comprises:

[0088] an inert gas input device, the inert gas input device being in communication with the inert gas input unit for providing inert gas to the ship-shore safety device.

[0089] In some of these embodiments, it further comprises:

[0090] a liquid recovery device, the liquid recovery device being in communication with the filtration unit for recovering the liquid of the filtration unit.

[0091] The present utility model adopts the above technical solutions, and compared with the prior art, has the following technical effects:

[0092] A ship-shore safety device and an oil and gas recovery system of the present utility model:

[0093] (1) By providing an oxygen monitoring element that can be self-closed, damage caused by excessive pressure can be prevented, and the later maintenance cost is reduced;

[0094] (2) By connecting the inert gas input unit and the filtration unit, the filtration unit can be purged, saving the later maintenance cost;

[0095] (3) By providing an adjustment element on the inert gas input unit, later debugging is facilitated, saving the debugging time and reducing the labor cost;

[0096] (4) By setting up a filtering unit with a power-off shutdown function, it provides safety guarantees for the personal safety of the staff and the safety of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0097] Figure 1 FIG. 1 is a schematic diagram (1) of a ship-shore safety device according to an embodiment of the present invention;

[0098] Figure 2 FIG. 2 is a schematic diagram of a gas acquisition unit according to an embodiment of the present invention;

[0099] Figure 3 FIG. 3 is a schematic diagram of a filtering unit according to an embodiment of the present invention;

[0100] Figure 4 FIG. 4 is a schematic diagram of an explosion-proof unit according to an embodiment of the present invention;

[0101] Figure 5 FIG. 5 is a schematic diagram of a gas output unit according to an embodiment of the present invention;

[0102] Figure 6 FIG. 6 is a schematic diagram of a pressure relief unit according to an embodiment of the present invention;

[0103] Figure 7 FIG. 7 is a schematic diagram of an inert gas input unit according to an embodiment of the present invention;

[0104] Figure 8 FIG. 8 is a schematic diagram (2) of a ship-shore safety device according to an embodiment of the present invention;

[0105] Figure 9 FIG. 9 is a schematic diagram of a liquid discharge unit according to an embodiment of the present invention;

[0106] Figure 10 FIG. 10 is a schematic diagram (3) of a ship-shore safety device according to an embodiment of the present invention;

[0107] Figure 11 FIG. 11 is a schematic diagram of a central control unit according to an embodiment of the present invention;

[0108] Figure 12 FIG. 12 is a schematic diagram (4) of a ship-shore safety device according to an embodiment of the present invention;

[0109] Figure 13 FIG. 13 is a schematic diagram of a base unit according to an embodiment of the present invention.

[0110] The reference numerals therein are: 100, ship-shore safety device;

[0111] 110. Gas acquisition unit; 111. Gas acquisition element; 112. First control valve element; 113. First check element; 114. First oxygen monitoring element; 115. First flange element; 116. First pressure monitoring element; 117. Second pressure monitoring element; 118. Third pressure monitoring element;

[0112] 120. Filtration unit; 121. Filtration element; 122. First emergency control element; 123. Liquid level monitoring element;

[0113] 130. Explosion-proof unit; 131. Explosion-proof element; 132. Temperature monitoring element;

[0114] 140. Gas output unit; 141. Gas output element; 142. Second oxygen monitoring element; 143. Second flange element; 144. Flow monitoring element;

[0115] 150. Pressure relief unit; 151. First pressure relief element; 152. Pressure release element; 153. Second pressure relief element; 154. Second emergency control element; 155. Flame arrester element;

[0116] 160. Inert gas input unit; 161. First inert gas input element; 162. Second control valve element; 163. Second check element; 164. Third control valve element; 165. Second inert gas input element; 166. Fourth control valve element; 167. Adjusting element; 168. Pressure reducing element;

[0117] 170. Liquid discharge unit; 171. Liquid discharge element; 172. Fifth control valve element;

[0118] 180. Central control unit; 181. Central control element; 182. Alarm element; 183. Explosion-proof element;

[0119] 190. Base unit; 191. Base element; 192. Support element; 193. Connecting element. Detailed implementation manners

[0120] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0121] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0122] The present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments, but it is not intended to limit the present utility model.

[0123] Embodiment 1

[0124] This embodiment relates to the ship-shore safety device of the present utility model.

[0125] A schematic embodiment of the present utility model, as Figure 1 shown, a ship-shore safety device 100 includes a gas acquisition unit 110, a filtration unit 120, an explosion-proof unit 130, a gas output unit 140, a pressure relief unit 150, and an inert gas input unit 160. Among them, the gas acquisition unit 110 is detachably connected to the oil and gas pipeline of the ship's cabin for inputting oil and gas into the ship-shore safety device 100; the filtration unit 120 is arranged downstream of the gas acquisition unit 110 for gas-liquid separation of the oil and gas; the explosion-proof unit 130 is arranged downstream of the filtration unit 120 for preventing the detonation combustion of the flame; the gas output unit 140 is arranged downstream of the explosion-proof unit 130 for transporting the oil and gas to the oil and gas recovery device; the pressure relief unit 150 is arranged between the gas acquisition unit 110 and the filtration unit 120 for performing emergency pressure relief when the pressure of the ship-shore safety device 100 is higher or lower than the safety value; the inert gas input unit 160 is respectively communicated with the gas acquisition unit 110 and the filtration unit 120 for respectively transporting inert gas to the gas acquisition unit 110 and the filtration unit 120 to reduce the oxygen content of the ship-shore safety device 100.

[0126] As Figure 2 shown, the gas acquisition unit 110 includes a gas acquisition element 111, a first control valve element 112, a first check element 113, and a first oxygen monitoring element 114. Among them, the gas acquisition element 111 is respectively communicated with the oil and gas pipeline of the ship's cabin, the filtration unit 120, the pressure relief unit 150, and the inert gas input unit 160 for inputting oil and gas into the ship-shore safety device 100; the first control valve element 112 is arranged on the gas acquisition element 111 for controlling the opening and closing of the gas acquisition element 111; the first check element 113 is arranged on the gas acquisition element 111 and is located downstream of the first control valve element 112 for preventing the oil and gas entering the gas acquisition element 111 from flowing back; the first oxygen monitoring element 114 is communicated with the gas acquisition element 111 for detecting the oxygen content of the oil and gas pipeline of the ship's cabin.

[0127] In some of these embodiments, the gas acquisition element 111 is a pipeline.

[0128] The first control valve element 112 meets the requirements of GB / T 12235-2007 (National Standard "Steel Gate Valves and Lift Check Valves for Petroleum, Petrochemical and Related Industries").

[0129] In some of these embodiments, the first control valve element 112 is a general-purpose manual valve made of steel for petrochemical industry.

[0130] The first check element 113 meets the requirements of GB / T 12235 - 2007 (National Standard "Steel Gate Valves, Globe Valves and Check Valves for Petroleum, Petrochemical and Allied Industries").

[0131] In some of these embodiments, the first check element 113 is a general-purpose check valve made of steel for petrochemical industry.

[0132] In some of these embodiments, the first oxygen monitoring element 114 is an oxygen content sensor.

[0133] Furthermore, the gas acquisition unit 110 further includes a first flange element 115. Among them, the first flange element 115 is arranged at the air inlet end of the gas acquisition element 111 for insulation.

[0134] In some of these embodiments, the first flange element 115 includes an insulating gasket, an insulating sleeve and bolts.

[0135] In some of these embodiments, the first flange element 115 is an insulating flange.

[0136] Furthermore, the gas acquisition unit 110 further includes a first pressure monitoring element 116. Among them, the first pressure monitoring element 116 is communicated with the gas acquisition element 111 and is located upstream of the communication position between the gas acquisition element 111 and the pressure relief unit 150 for detecting the internal pressure of the gas acquisition element 111.

[0137] The first pressure monitoring element 116 meets the requirements of GBT 15478 (National Standard "Test Methods for the Performance of Pressure Sensors").

[0138] In some of these embodiments, the measuring range of the first pressure monitoring element 116 is - 10 kPa to 100 kPa.

[0139] In some of these embodiments, the accuracy of the first pressure monitoring element 116 is 0.1%.

[0140] In some of these embodiments, the explosion-proof grade of the first pressure monitoring element 116 is Ex dⅡ CT4, and the protection grade is IP67.

[0141] In some of these embodiments, the first pressure monitoring element 116 is a first pressure transmitter.

[0142] Further, the gas acquisition unit 110 further includes a second pressure monitoring element 117. The second pressure monitoring element 117 is communicated with the gas acquisition element 111 and is located downstream of the communication position between the gas acquisition element 111 and the pressure relief unit 150, and is used to detect the pressure of the oil and gas entering the filtration unit 120.

[0143] The second pressure monitoring element 117 meets the requirements of GBT 15478 (National Standard "Test Methods for the Performance of Pressure Sensors").

[0144] In some embodiments, the measuring range of the second pressure monitoring element 117 is -10 kPa to 100 kPa.

[0145] In some embodiments, the accuracy of the second pressure monitoring element 117 is 0.1%.

[0146] In some embodiments, the explosion-proof grade of the second pressure monitoring element 117 is Ex dⅡ CT4, and the protection grade is IP67.

[0147] In some embodiments, the second pressure monitoring element 117 is a pressure gauge.

[0148] Further, the gas acquisition unit 110 further includes at least one third pressure monitoring element 118. The third pressure monitoring element 118 is communicated with the gas acquisition element 111 and is located upstream of the communication position between the gas acquisition element 111 and the pressure relief unit 150, and is used to detect the internal pressure difference of the gas acquisition element 111.

[0149] In some embodiments, there are a plurality of third pressure monitoring elements 118. The plurality of third pressure monitoring elements 118 are arranged at intervals along the axial direction of the gas acquisition element 111. Among them, at least one third pressure monitoring element 118 is arranged upstream of the gas acquisition element 111, and at least one third pressure monitoring element 118 is arranged downstream of the gas acquisition element 111.

[0150] The third pressure monitoring element 118 meets the requirements of GBT 15478 (National Standard "Test Methods for the Performance of Pressure Sensors").

[0151] In some embodiments, the measuring range of the third pressure monitoring element 118 is -10 kPa to 100 kPa.

[0152] In some embodiments, the accuracy of the third pressure monitoring element 118 is 0.1%.

[0153] In some embodiments, the explosion-proof grade of the third pressure monitoring element 118 is Ex dⅡ CT4, and the protection grade is IP67.

[0154] In some of these embodiments, the third pressure monitoring element 118 is a differential pressure transmitter.

[0155] Furthermore, the gas acquisition unit 110 further includes a first opening and closing element. Wherein, the first opening and closing element is arranged on the first oxygen monitoring element 114 and is used to control the connection or disconnection between the first oxygen monitoring element 114 and the gas acquisition element 111.

[0156] In some of these embodiments, the first opening and closing element is a flange valve.

[0157] As Figure 3 shown, the filtering unit 120 includes a filtering element 121. Wherein, the filtering element 121 is arranged downstream of the gas acquisition unit 110 and is respectively connected to the gas acquisition unit 110, the explosion-proof unit 130, and the inert gas input unit 160, and is used for gas-liquid separation of oil and gas.

[0158] Specifically, the filtering element 121 is connected to the gas acquisition element 111.

[0159] The design pressure of the filtering element 121 is not less than 1.0 MPa (G).

[0160] In some of these embodiments, the filtering element 121 is a gas-liquid separator with a filtering structure.

[0161] Furthermore, the filtering unit 120 further includes a first emergency control element 122. Wherein, the first emergency control element 122 is arranged at the air inlet end of the filtering element 121 and is used to prevent oil and gas from entering the filtering element 121 in case of emergency.

[0162] In some of these embodiments, the first emergency control element 122 is closed by remote control or manually.

[0163] The quality of the first emergency control element 122 meets the requirements of ISO 10497 (Requirements for Valve Tests - Requirements for Valve Fire Resistance Tests).

[0164] In some of these embodiments, the first emergency control element 122 is an electric butterfly valve.

[0165] Furthermore, the filtering unit 120 further includes a liquid level monitoring element 123. The liquid level monitoring element 123 is connected to the filtering element 121 and is used to detect the liquid level height of the filtering element 121.

[0166] In some of these embodiments, the liquid level monitoring element 123 is a magnetic flap level gauge.

[0167] As Figure 4As shown, the explosion-proof unit 130 includes an explosion-proof element 131. Among them, the explosion-proof element 131 is arranged downstream of the filtering unit 120 and is respectively communicated with the filtering unit 120 and the gas output unit 140, and is used to prevent the detonation combustion of the flame;

[0168] Specifically, the explosion-proof element 131 is arranged downstream of the filtering element 121 and is communicated with the filtering element 121.

[0169] The quality of the explosion-proof element 131 meets the requirements of GB / T13347 (National Standard "Petroleum Gas Pipeline Flame Arrestor").

[0170] The performance type test of the explosion-proof element 131 meets the requirements of ISO16852.

[0171] In some of the embodiments, the explosion-proof element 131 is a detonation-proof flame arrester.

[0172] Furthermore, the explosion-proof unit 130 further includes at least one temperature monitoring element 132. Among them, the temperature monitoring element 132 is communicated with the explosion-proof element 131 and is used to detect the temperature of the explosion-proof element 131.

[0173] In some of the embodiments, there are two temperature monitoring elements 132. One temperature monitoring element 132 is arranged at the input end of the explosion-proof element 131, and one temperature monitoring element 132 is arranged at the output end of the explosion-proof element 131.

[0174] The temperature monitoring element 132 meets the requirements of GB / T 30825-2014 (National Standard "Heat Treatment Temperature Measurement").

[0175] In some of the embodiments, the measuring range of the temperature monitoring element 132 is -50 °C to 150 °C.

[0176] In some of the embodiments, the accuracy of the temperature monitoring element 132 is 0.1%.

[0177] In some of the embodiments, the explosion-proof grade of the temperature monitoring element 132 is Ex dⅡ CT4, and the protection grade is IP67.

[0178] In some of the embodiments, the temperature monitoring element 132 is a temperature sensor.

[0179] As Figure 5 shown, the gas output unit 140 includes a gas output element 141 and a second oxygen monitoring element 142. Among them, the gas output unit 140 is arranged downstream of the explosion-proof unit 130 and is communicated with the explosion-proof unit 130, and is used to transport oil and gas to the oil and gas recovery device; the second oxygen monitoring element 142 is communicated with the gas output element 141 and is used to detect the oxygen content of the oil and gas entering the oil and gas recovery device.

[0180] Specifically, the gas output element 141 communicates with the explosion-proof element 131.

[0181] In some of these embodiments, the gas output element 141 is a pipeline.

[0182] In some of these embodiments, the second oxygen monitoring element 142 is an oxygen content sensor.

[0183] Furthermore, the gas output unit 140 further includes a second flange element 143. Among them, the second flange element 143 is disposed at the gas outlet end of the gas output element 141 and is connected to the oil and gas recovery device.

[0184] In some of these embodiments, the second flange element 143 includes an insulating gasket, an insulating sleeve, and bolts.

[0185] In some of these embodiments, the second flange element 143 is an insulating flange.

[0186] Furthermore, the gas output unit 140 further includes a flow rate monitoring element 144. Among them, the flow rate monitoring element 144 communicates with the gas output element 141 and is used to detect the flow rate of the oil and gas entering the oil and gas recovery device.

[0187] In some of these embodiments, the flow rate monitoring element 144 is a gas flow meter.

[0188] Furthermore, the gas output unit 140 further includes a second opening and closing element. Among them, the second opening and closing element is disposed on the second oxygen monitoring element 142 and is used to control the communication or closing between the second oxygen monitoring element 142 and the gas output element 141.

[0189] In some of these embodiments, the second opening and closing element is a flange valve.

[0190] As Figure 6 shown, the pressure relief unit 150 includes a first pressure relief element 151 and a pressure release element 152. Among them, the first pressure relief element 151 is disposed between the gas acquisition unit 110 and the filtering unit 120 and communicates with the gas acquisition unit 110, and is used to perform emergency pressure relief when the pressure of the ship-shore safety device 100 is higher or lower than the safety value; the pressure release element 152 is disposed on the first pressure relief element 151 and is used to be emergently opened when the oil and gas oxygen content of the gas acquisition unit 110 reaches the explosion limit value or the pressure exceeds the limit.

[0191] Specifically, the first pressure relief element 151 is disposed between the gas acquisition element 111 and the filtering element 121 and communicates with the gas acquisition element 111.

[0192] In some of these embodiments, the first pressure relief element 151 is the first pressure relief pipeline.

[0193] During the process of the pressure relief element 152 opening to closing when reaching the set pressure, the exhaust speed of the gas at the valve port is always not less than 30 m / s.

[0194] The mass of the pressure relief element 152 meets the requirements of GB / T 19699 (National Standard "Ship and Marine Technology - Pressure - Vacuum Valves and Flame Arresters for Liquid Cargo Tanks").

[0195] In some of these embodiments, the pressure relief element 152 is a pressure / vacuum relief valve.

[0196] Furthermore, the pressure relief unit 150 further includes a second pressure relief element 153. Among them, the second pressure relief element 153 is connected to the first pressure relief element 151, a second emergency control element 154, and a flame arrester element 155. Among them, the second emergency control element 154 is arranged on the second pressure relief element 153 and is used for emergency opening in the case where the oil - gas - oxygen content of the ship - shore safety device 100 reaches the explosion limit value or the pressure exceeds the limit; the flame arrester element 155 is arranged at the exhaust end of the second pressure relief element 153 and is used to prevent the detonation combustion of the flame.

[0197] The second pressure relief element 153 is arranged in the middle of the first pressure relief element 151, forming a T - shape with the first pressure relief element 151.

[0198] In some of these embodiments, the second pressure relief element 153 is the second pressure relief pipeline.

[0199] The second emergency control element 154 can be remotely controlled to open / close or manually open / close.

[0200] In some of these embodiments, the explosion - proof grade of the second emergency control element 154 is Ex dⅡC T4.

[0201] In some of these embodiments, the protection grade of the second emergency control element 154 is IP65.

[0202] In some of these embodiments, the second emergency control element 154 is an emergency unloading valve.

[0203] In some of these embodiments, the flame arrester element 155 is a flame arrester cap.

[0204] Such as Figure 7As shown, the inert gas input unit 160 includes a first inert gas input element 161, a second control valve element 162, a second check element 163, a third control valve element 164, a second inert gas input element 165, and a fourth control valve element 166. Among them, the first inert gas input element 161 is in communication with the gas acquisition unit 110 and is used to supply inert gas to the ship-shore safety device 100; the second control valve element 162 is arranged on the first inert gas input element 161 and is used to control the opening or closing of the first inert gas input element 161; the second check element 163 is arranged on the first inert gas input element 161 and is located downstream of the second control valve element 162 to prevent the gas entering the first inert gas input element 161 from flowing back; the third control valve element 164 is arranged on the first inert gas input element 161 and is located downstream of the second check element 163 to connect or close the first inert gas input element 161 and the gas acquisition unit 110; the second inert gas input element 165 is in communication with the first inert gas input element 161 and the filtration unit 120 respectively and is located downstream of the second check element 163 to supply inert gas to the filtration unit 120 for purging; the fourth control valve element 166 is arranged on the second inert gas input element 165 to open or close the second inert gas input element 165.

[0205] Specifically, the first inert gas input element 161 is in communication with the gas acquisition element 111; the second inert gas input element 165 is in communication with the filtration element 121.

[0206] The diameter of the first inert gas input element 161 is 50 cm.

[0207] In some embodiments, the first inert gas input element 161 is a first inert gas pipeline.

[0208] The second control valve element 162 meets the requirements of GB / T 12235-2007 (National Standard "Steel Gate Valves and Lift Check Valves for Petroleum, Petrochemical and Related Industries").

[0209] In some embodiments, the second control valve element 162 is a general-purpose manual valve made of steel for petrochemical industry.

[0210] The second check element 163 meets the requirements of GB / T 12235-2007 (National Standard "Steel Gate Valves and Lift Check Valves for Petroleum, Petrochemical and Related Industries").

[0211] In some embodiments, the second check element 163 is a general-purpose check valve made of steel for petrochemical industry.

[0212] The third control valve element 164 complies with JB / T 8528-1997 (Technical Conditions for General Electric Valve Devices).

[0213] The third control valve element 164 complies with GB / T 13927-2022 (National Standard Industrial Valves - Pressure Testing).

[0214] The third control valve element 164 complies with GB / T 12220-2015 (National Standard Industrial Valves - Marking).

[0215] In some of these embodiments, the explosion-proof rating of the third control valve element 164 is Ex dⅡB T4, and the protection rating is IP65.

[0216] In some of these embodiments, the third control valve element 164 is a general-purpose electric control valve for petrochemical steel.

[0217] The second inert gas input element 165 is disposed in the middle of the first inert gas input element 161 and is arranged in a T shape with the first inert gas input element 161.

[0218] In some of these embodiments, the second inert gas input element 165 is a second inert gas pipeline.

[0219] The fourth control valve element 166 meets the requirements of GB / T 12235-2007 (National Standard Steel Gate Valves, Globe Valves and Check Valves for Petroleum, Petrochemical and Allied Industries).

[0220] In some of these embodiments, the fourth control valve element 166 is a general-purpose manual valve for petrochemical steel.

[0221] Furthermore, the inert gas input unit 160 further includes a regulating element 167. Among them, the regulating element 167 is disposed on the first inert gas input element 161, downstream of the second check valve element 163 and upstream of the third control valve element 164, and is used to regulate the internal pressure of the first inert gas input element 161.

[0222] The regulating element 167 complies with JB / T 8528-1997 (Technical Conditions for General Electric Valve Devices).

[0223] The regulating element 167 complies with GB / T 13927-2022 (National Standard Industrial Valves - Pressure Testing).

[0224] The regulating element 167 complies with GB / T 12220-2015 (National Standard Industrial Valves - Marking).

[0225] In some of these embodiments, the explosion-proof rating of the regulating element 167 is Ex dⅡB T4, and the protection rating is IP65.

[0226] In some of these embodiments, the regulating element 167 is an electric control valve.

[0227] Furthermore, the inert gas input unit 160 further includes a pressure-reducing element 168. The pressure-reducing element 168 is disposed on the first inert gas input element 161, downstream of the second check element 163 and upstream of the third control valve element 164, for pressure reduction.

[0228] In some of these embodiments, the pressure-reducing element 168 is a pressure-reducing valve.

[0229] The usage method of the present utility model is as follows:

[0230] The first oxygen monitoring element 114 and the second oxygen monitoring element 142 respectively detect the oxygen content of the oil and gas of the gas acquisition element 111 and the oil and gas of the gas output element 141:

[0231] When the oxygen content of the oil and gas exceeds 5%, an alarm signal is issued;

[0232] When the oxygen content of the oil and gas exceeds 6%, the second control valve element 162 is opened, at least one of the third control valve element 164 and the fourth control valve element 166 is opened, and the first inert gas input element 161 inputs inert gas to the gas acquisition element 111, and / or, the second inert gas input element 165 inputs inert gas to the filtering element 121;

[0233] When the oxygen content is lower than 6%, the second control valve element 162, the third control valve element 164, and the fourth control valve element 166 are closed;

[0234] When the oxygen content reaches 8%, an alarm signal is issued to remind the staff to stop the operation for investigation.

[0235] Furthermore, the usage method further includes:

[0236] When the pressure of the gas acquisition element 111 exceeds 80% of the maximum allowable pressure (14 kPa) of the oil and gas pipeline in the cabin, an alarm signal is issued;

[0237] When the pressure of the gas acquisition element 111 reaches 100% of the maximum allowable pressure (14 kPa) of the oil and gas pipeline in the cabin, the first emergency control element 122 is closed, and at the same time, the pressure release element 152 is opened;

[0238] When the pressure of the gas acquisition element 111 is as low as 1.5 kPa, an alarm signal is issued;

[0239] When the pressure of the gas acquisition element 111 drops to -3.5 kPa, the first emergency control element 122 is closed.

[0240] The advantages of the present utility model are as follows:

[0241] (1) By setting an oxygen monitoring element that can automatically close, damage caused by excessive pressure can be prevented, reducing the later maintenance cost;

[0242] (2) By connecting the inert gas input unit and the filtration unit, the filtration unit can be purged, saving the later maintenance cost;

[0243] (3) By setting an adjustment element on the inert gas input unit, later debugging is facilitated, saving debugging time and reducing labor costs;

[0244] (4) By setting a filtration unit with a power-off closing function, safety guarantees are provided for the personal safety of the staff and the safety of the equipment.

[0245] Embodiment 2

[0246] This embodiment is a supplementary embodiment of Embodiment 1.

[0247] As Figure 8 shown, the ship-shore safety device 100 further includes a liquid discharge unit 170. Among them, the liquid discharge unit 170 is connected to the filtration unit 120 and is used to discharge the liquid of the filtration unit 120.

[0248] As Figure 9 shown, the liquid discharge unit 170 further includes a liquid discharge element 171 and a fifth control valve element 172. Among them, the liquid discharge element 171 is connected to the filtration unit 120 and is used to discharge the liquid of the filtration unit 120; the fifth control valve element 172 is arranged on the liquid discharge element 171 and is used to close or open the liquid discharge element 171.

[0249] Specifically, the liquid discharge element 171 is connected to the filter element 121 and is used to discharge the liquid in the filter element 121.

[0250] In some of the embodiments, the liquid discharge element 171 is a liquid discharge pipe.

[0251] In some of the embodiments, the fifth control valve element 172 meets the requirements of GB / T 12235-2007 (National Standard "Steel Gate Valves and Lift Check Valves for Petroleum, Petrochemical and Related Industries").

[0252] In some of the embodiments, the fifth control valve element 172 is a general-purpose manual valve made of steel for petrochemical industry.

[0253] Embodiment 3

[0254] This embodiment is a supplementary embodiment of Embodiments 1-2.

[0255] As Figure 10 shown, the ship-shore safety device 100 further includes a central control unit 180. Among them, the central control unit 180 is respectively communicatively connected to the gas acquisition unit 110, the filtering unit 120, the explosion-proof unit 130, the gas output unit 140, the pressure relief unit 150, and the inert gas input unit 160.

[0256] As Figure 11 shown, the central control unit 180 includes a central control element 181. Among them, the central control element 181 is respectively communicatively connected to the gas acquisition unit 110, the filtering unit 120, the explosion-proof unit 130, the gas output unit 140, the pressure relief unit 150, and the inert gas input unit 160.

[0257] Specifically, the central control element 181 is respectively communicatively connected to the first pressure monitoring element 116, the second pressure monitoring element 117, the third pressure monitoring element 118, the first emergency control element 122, the temperature monitoring element 132, the flow monitoring element 144, the second emergency control element 154, the third control valve element 164, the first oxygen monitoring element 114, and the second oxygen monitoring element 142.

[0258] In some of these embodiments, the central control element 181 is a PLC control system.

[0259] Further, the central control unit 180 further includes an alarm element 182. Among them, the alarm element 182 is communicatively connected to the central control element 181 and is used to issue an alarm.

[0260] In some of these embodiments, the alarm element 182 is an audible and visual alarm system.

[0261] Further, the central control unit 180 further includes an explosion-proof element 183. Among them, the explosion-proof element 183 is arranged to cover the central control element 181 for protection.

[0262] The explosion-proof performance of the explosion-proof element 183 complies with the provisions of GB / T 3836.2-2021 (National Standard "Explosive atmospheres - Part 2: Equipment protected by flameproof enclosures 'd'").

[0263] In some of these embodiments, the explosion-proof rating of the explosion-proof element 183 is ExdⅡBT4, and the protection rating is IP65.

[0264] In some of these embodiments, the explosion-proof element 183 is an explosion-proof control box.

[0265] The usage method of the present utility model is as follows:

[0266] The first oxygen monitoring element 114 and the second oxygen monitoring element 142 respectively detect the oxygen content in the oil and gas of the gas acquisition element 111 and the oil and gas of the gas output element 141:

[0267] When the oxygen content in the oil and gas exceeds 5%, after receiving the signal, the central control element 181 causes the alarm element 182 to emit an alarm signal;

[0268] When the oxygen content in the oil and gas exceeds 6%, the central control element 181 controls the second control valve element 162 to open, and the central control element 181 controls at least one of the third control valve element 164 and the fourth control valve element 166 to open. The first inert gas input element 161 inputs inert gas to the gas acquisition element 111, and / or the second inert gas input element 165 inputs inert gas to the filtering element 121;

[0269] When the oxygen content is lower than 6%, the second control valve element 162, the third control valve element 164, and the fourth control valve element 166 are closed;

[0270] When the oxygen content reaches 8%, after receiving the signal, the central control element 181 causes the alarm element 182 to emit an alarm signal to remind the staff to stop the operation for investigation.

[0271] Furthermore, the usage method further includes:

[0272] When the pressure of the gas acquisition element 111 exceeds 80% of the maximum allowable pressure (14 kPa) of the cabin oil and gas pipeline, after receiving the signal, the central control element 181 causes the alarm element 182 to emit an alarm signal;

[0273] When the pressure of the gas acquisition element 111 reaches 100% of the maximum allowable pressure (14 kPa) of the cabin oil and gas pipeline, the first emergency control element 122 is closed, and at the same time the pressure release element 152 is opened;

[0274] When the pressure of the gas acquisition element 111 drops to 1.5 kPa, after receiving the signal, the central control element 181 causes the alarm element 182 to emit an alarm signal;

[0275] When the pressure of the gas acquisition element 111 drops to -3.5 kPa, the first emergency control element 122 is closed.

[0276] Example 4

[0277] This example is a supplementary example of Examples 1 to 3.

[0278] As Figure 12As shown, the ship-shore safety device 100 further includes a base unit 190. Among them, the base unit 190 is arranged on a horizontal plane and is used to install the gas acquisition unit 110, the filtering unit 120, the explosion-proof unit 130, the gas output unit 140, the pressure relief unit 150, and the inert gas input unit 160.

[0279] As Figure 13 shown, the base unit 190 includes a base element 191, a plurality of support elements 192, and a plurality of connection elements 193. Among them, the base element 191 is arranged on a horizontal plane; the plurality of support elements 192 are respectively arranged on the upper part of the base element 191 and are respectively connected to the gas acquisition unit 110 and the gas output unit 140; the plurality of connection elements 193 are respectively connected to the gas acquisition unit 110, the gas output unit 140, and the corresponding support elements 192.

[0280] Specifically, the plurality of support elements 192 are respectively connected to the gas acquisition element 111 and the gas output element 141.

[0281] In some embodiments, the base element 191 is a skid.

[0282] In some embodiments, the connection manner between the support element 192 and the base element 191 includes but is not limited to screw connection and welding.

[0283] At least one support element 192 is connected to the gas acquisition element 111. In the case where a plurality of support elements 192 are connected to the gas acquisition element 111, the plurality of support elements 192 are arranged at intervals along the axial direction of the gas acquisition element 111.

[0284] At least one support element 192 is connected to the gas output element 141. In the case where a plurality of support elements 192 are connected to the gas output element 141, the plurality of support elements 192 are arranged at intervals along the axial direction of the gas output element 141.

[0285] In some embodiments, the support element 192 is a pipe U-shaped bracket.

[0286] The number of the connection elements 193 matches the number of the support elements 192. Generally, the number of the connection elements 193 is equal to the number of the support elements 192.

[0287] In some embodiments, the connection element 193 includes but is not limited to mounting angle brackets.

[0288] Embodiment 5

[0289] This embodiment relates to the oil and gas recovery system of the present utility model.

[0290] An oil and gas recovery system includes a ship-shore safety device 100 as described in any one of Embodiments 1 to 4.

[0291] Further, the oil and gas recovery system further includes an oil and gas recovery device. Among them, the oil and gas recovery device is connected to the gas output unit 140 and is used for recovering oil and gas.

[0292] Specifically, the oil and gas recovery device is connected to the gas output element 141.

[0293] Further, the oil and gas recovery system further includes an inert gas input device. Among them, the inert gas input device is connected to the inert gas input unit 160 and is used for providing inert gas to the ship-shore safety device 100.

[0294] Specifically, the inert gas input device is connected to the first inert gas input element 161.

[0295] Further, the oil and gas recovery system further includes a liquid recovery device. Among them, the liquid recovery device is connected to the filtration unit 120 and is used for recovering the liquid of the filtration unit 120.

[0296] Specifically, the liquid recovery device is connected to the filtration element 121.

[0297] More specifically, the liquid recovery device is connected to the liquid discharge element 171.

[0298] The usage method of this embodiment is basically the same as that of Embodiments 1 to 4, and will not be elaborated here.

[0299] The technical effects of this embodiment are basically the same as those of Embodiments 1 to 4, and will not be elaborated here.

[0300] The above are only the preferred embodiments of the present invention, and do not limit the implementation manners and protection scope of the present invention. For those skilled in the art, it should be understood that any equivalent replacement and obvious changes made by using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A ship-shore safety device, characterized in that: include: A gas acquisition unit, which is detachably connected to the oil and gas pipeline in the cabin and is used to input oil and gas into the ship-shore safety device; A filter unit, the filter unit is arranged downstream of the gas acquisition unit and is used for gas-liquid separation of oil and gas; An explosion-proof unit, which is arranged downstream of the filter unit and is used to prevent the detonation and combustion of the flame; A gas output unit, the gas output unit is arranged downstream of the explosion-proof unit and is used to transport oil and gas to the oil and gas recovery device; A pressure relief unit, which is disposed between the gas acquisition unit and the filter unit and is used for emergency pressure relief when the pressure of the ship-shore safety device is higher or lower than a safety value; An inert gas input unit is connected to the gas acquisition unit and the filter unit respectively, and is used to transport inert gas to the gas acquisition unit and the filter unit respectively to reduce the oxygen content of the ship-shore safety device.

2. The ship-shore safety device according to claim 1, characterized in that: The gas acquisition unit comprises: A gas acquisition element, which is respectively connected to the oil and gas pipeline of the cabin, the filter unit, the pressure relief unit, and the inert gas input unit, and is used to input oil and gas into the ship-shore safety device; a first control valve element, the first control valve element being disposed on the gas acquisition element and being used to control the opening and closing of the gas acquisition element; a first check element, which is disposed on the gas acquisition element and is located downstream of the first control valve element, and is used to prevent the oil and gas entering the gas acquisition element from flowing back; A first oxygen monitoring element, which is connected to the gas acquisition element and is used to detect the oxygen content of the oil and gas pipeline in the cabin; and / or The filtering unit comprises: A filter element, which is disposed downstream of the gas acquisition unit and is respectively connected to the gas acquisition unit, the explosion-proof unit, and the inert gas input unit, for performing gas-liquid separation on the oil and gas; and / or The explosion-proof unit comprises: An explosion-proof element, which is arranged downstream of the filter unit and is connected to the filter unit and the gas output unit respectively, and is used to prevent the detonation combustion of the flame; and / or The gas output unit comprises: A gas output element, the gas output unit is arranged downstream of the explosion-proof unit and is in communication with the explosion-proof unit, and is used to deliver oil and gas to the oil and gas recovery device; A second oxygen monitoring element, the second oxygen monitoring element is connected to the gas output element and is used to detect the oxygen content of the oil gas entering the oil gas recovery device; and / or The pressure relief unit comprises: a first pressure relief element, which is disposed between the gas acquisition unit and the filter unit and is in communication with the gas acquisition unit, and is used for emergency pressure relief when the pressure of the ship-shore safety device is higher or lower than a safety value; A pressure release element, which is arranged on the first pressure release element and is used for emergency opening when the oil and gas oxygen content of the gas acquisition unit reaches an explosion limit or the pressure exceeds the limit; and / or The inert gas input unit comprises: a first inert gas input element, the first inert gas input element being in communication with the gas acquisition unit and being used for providing inert gas to the ship-shore safety device; a second control valve element, the second control valve element being disposed at the first inert gas input element and being used to control the opening or closing of the first inert gas input element; a second check element, which is disposed at the first inert gas input element and is located downstream of the second control valve element, and is used to prevent the gas entering the first inert gas input element from flowing back; a third control valve element, the third control valve element being disposed at the first inert gas input element and being located downstream of the second check element, and being used for connecting or closing the first inert gas input element and the gas acquisition unit; a second inert gas input element, which is connected to the first inert gas input element and the filter unit respectively and is located downstream of the second check element, and is used to deliver inert gas to the filter unit for purging; A fourth control valve element, wherein the fourth control valve element is disposed on the second inert gas input element and is used to open or close the second inert gas input element.

3. The ship-shore safety device according to claim 2, characterized in that: The gas acquisition unit further comprises: a first flange element, the first flange element being arranged at the gas inlet end of the gas acquisition element for insulation; and / or The gas acquisition unit further comprises: a first pressure monitoring element, which is in communication with the gas acquisition element and is located upstream of a communication position between the gas acquisition element and the pressure release unit, and is used to detect an internal pressure of the gas acquisition element; and / or The gas acquisition unit further comprises: a second pressure monitoring element, which is connected to the gas acquisition element and is located downstream of the connection position between the gas acquisition element and the pressure release unit, and is used to detect the pressure of the oil and gas entering the filter unit; and / or The gas acquisition unit further comprises: at least one third pressure monitoring element, the third pressure monitoring element being in communication with the gas acquisition element and being located upstream of a communication position between the gas acquisition element and the pressure release unit, for detecting a pressure difference inside the gas acquisition element; and / or The filtering unit further comprises: a first emergency control element, which is disposed at the air inlet end of the filter element and is used to prevent oil and gas from entering the filter element in an emergency; and / or The filtering unit further comprises: a liquid level monitoring element, the liquid level monitoring element being in communication with the filter element and being used to detect the liquid level height of the filter element; and / or The explosion-proof unit also includes: at least one temperature monitoring element, the temperature monitoring element being in communication with the explosion-proof element and being used to detect the temperature of the explosion-proof element; and / or The gas output unit also includes: a second flange element, which is disposed at the gas outlet end of the gas output element and is connected to an oil and gas recovery device; and / or The gas output unit also includes: a flow monitoring element, the flow monitoring element being in communication with the gas output element and being used to detect the flow of oil and gas entering the oil and gas recovery device; and / or The pressure release unit further comprises: a second pressure relief element, the second pressure relief element being in communication with the first pressure relief element; a second emergency control element, the second emergency control element being arranged on the second pressure relief element and being used for emergency opening when the oil, gas and oxygen content of the ship-shore safety device reaches an explosion limit or the pressure exceeds a limit; A flame arrester element, which is arranged at the exhaust end of the second pressure relief element to prevent the detonation combustion of the flame; and / or The inert gas input unit also includes: a regulating element, which is arranged at the first inert gas input element and is located downstream of the second check element and upstream of the third control valve element, and is used to adjust the internal pressure of the first inert gas input element; and / or The inert gas input unit also includes: A pressure reducing element is provided at the first inert gas input element and is located downstream of the second check element and upstream of the third control valve element for reducing pressure.

4. The ship-shore safety device according to any one of claims 1 to 3, characterized in that: Also includes: a liquid discharge unit, the liquid discharge unit being in communication with the filter unit and being used for discharging liquid from the filter unit; and / or A central control unit is communicatively connected with the gas acquisition unit, the filter unit, the explosion-proof unit, the gas output unit, the pressure release unit, and the inert gas input unit respectively.

5. The ship-shore safety device according to claim 4, characterized in that: The liquid discharging unit comprises: a liquid discharge element, the liquid discharge element being in communication with the filter unit and being used for discharging liquid from the filter unit; a fifth control valve element, the fifth control valve element being arranged on the liquid discharge element and being used for closing or opening the liquid discharge element; and / or The central control unit comprises: A central control component is communicatively connected with the gas acquisition unit, the filter unit, the explosion-proof unit, the gas output unit, the pressure relief unit, and the inert gas input unit, respectively.

6. The ship-shore safety device according to claim 5, characterized in that: The central control unit also includes: an alarm element, the alarm element being in communication with the central control element and configured to sound an alarm; and / or An explosion-proof component is provided to cover the central control component for protection.

7. The ship-shore safety device according to claim 1, characterized in that: Also includes: A base unit, wherein the base unit is disposed on a horizontal plane and is used for installing the gas acquisition unit, the filter unit, the explosion-proof unit, the gas output unit, the pressure relief unit, and the inert gas input unit.

8. The ship-shore safety device according to claim 7, characterized in that: The base unit comprises: A base element, wherein the base element is disposed on a horizontal plane; A plurality of supporting elements, wherein the plurality of supporting elements are respectively disposed on the upper portion of the base element and are respectively connected to the gas acquisition unit and the gas output unit; A plurality of connecting elements are respectively connected to the gas acquisition unit, the gas output unit, and the corresponding supporting elements.

9. An oil and gas recovery system, characterized in that: include: A ship-shore safety device as claimed in any one of claims 1 to 8.

10. The oil vapor recovery system according to claim 9, characterized in that: Also includes: an oil and gas recovery device, the oil and gas recovery device being in communication with the gas output unit and being used for recovering oil and gas; and / or an inert gas input device, the inert gas input device being in communication with the inert gas input unit and being used for providing inert gas to the ship-shore safety device; and / or A liquid recovery device is communicated with the filter unit and is used to recover the liquid in the filter unit.

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