Offshore drilling blowout igniter

Abstract

The utility model discloses an offshore drilling blowout igniter, which particularly relates to the technical field of ignition, is used for igniting natural gas emptied by offshore drilling, and comprises a gas collection cylinder, a Tesla valve pipe, an ignition pipe, an ignition rod, a gas source control panel and a pressure opening and closing component, the gas collection cylinder is externally connected with a combustible gas source, the Tesla valve pipe is communicated with the gas collection cylinder, and the pressure opening and closing component is communicated with the ignition pipe. The number of the Tesla valve pipes is multiple, the ignition pipe is communicated with the Tesla valve pipes, the ignition rod is sequentially arranged on the gas collection cylinder and the ignition pipe in a penetrating mode, the gas source control plate is fixedly connected into the gas collection cylinder, a graphite sealing bowl is movably arranged on the gas source control plate in a penetrating mode, and the pressure opening and closing assembly is arranged on the graphite sealing bowl and the gas collection cylinder. The pressure opening and closing assembly comprises a supporting cover, a T-shaped guide rod and a tensioning spring, and one end of the T-shaped guide rod is fixedly connected to the graphite sealing bowl. The anti-backfire ignition device solves the technical problems that an existing ignition device is limited in anti-backfire capacity and insufficient in durability.

Description

Technical Field

[0001] The utility model relates to the technical field of ignition, and more specifically to an offshore drilling blowout igniter. Background Art

[0002] Offshore drilling is also called offshore drilling or ocean drilling. Offshore drilling is a drilling project conducted in the continental shelf sea area to explore and develop submarine oil and natural gas. The electronic ignition device for oil drilling fluid is a treatment device for tail gas and vented natural gas from oil drilling, refineries and natural gas gathering and transportation stations. The electronic ignition device can ignite and burn the vented combustible and harmful gases to eliminate their harm to the environment and safety. It is a safe and environmentally friendly equipment.

[0003] The existing ignition equipment used to ignite the natural gas released from offshore drilling is generally equipped with an anti-backfire device to improve the safety performance of the device. However, the existing anti-backfire device needs to be further improved in terms of anti-backfire capability. The existing anti-backfire device generally has an anti-backfire component arranged inside. The anti-backfire capability of only relying on an anti-backfire component is limited. In addition, rubber parts are generally used for plugging in the existing anti-backfire device. However, combustible gas has a certain corrosive ability to rubber. After long-term use, the rubber parts used for plugging are corroded, which will cause the anti-backfire capability to deteriorate. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, an embodiment of the utility model provides an offshore drilling blowout igniter. The technical problem to be solved by the utility model is that the current ignition device has limited anti-flashback capability and insufficient durability.

[0005] To achieve the above purpose, the utility model provides the following technical solution: an offshore drilling blowdown igniter, which is used to ignite the natural gas blown down from offshore drilling, comprising:

[0006] A gas collecting cylinder, the gas collecting cylinder is externally connected to a combustible gas source;

[0007] A Tesla valve pipe, wherein the Tesla valve pipe is connected to the gas collecting cylinder, and the number of the Tesla valve pipes is multiple;

[0008] An ignition tube, the ignition tube being in communication with a plurality of Tesla valve tubes;

[0009] A sparking rod, which is sequentially arranged on the gas collecting cylinder and the ignition tube;

[0010] An air source control board, the air source control board is fixedly connected in the air collecting cylinder, and a graphite sealing bowl is movably provided on the air source control board;

[0011] A pressure opening and closing component is arranged on the graphite sealing bowl and the gas collecting cylinder.

[0012] In a preferred embodiment, an anti-flashback cavity is provided in the gas collecting cylinder, a combustion cavity is provided in the ignition tube, and the diameter of the anti-flashback cavity is larger than the diameter of the combustion cavity.

[0013] In a preferred embodiment, the bottom of the gas collecting cylinder is fixedly connected to a gas source connecting pipe.

[0014] In a preferred embodiment, the connection between the ignition rod and the gas collecting cylinder and the ignition tube is fixedly connected with a ceramic sealing plug.

[0015] In a preferred embodiment, a valve is provided on the air source control plate, and the graphite sealing bowl is in close contact with the valve of the air source control plate.

[0016] In a preferred embodiment, the pressure opening and closing assembly includes a support cover fixedly connected to the bottom wall of the anti-backfire chamber, a T-shaped guide rod slidably connected to the support cover, and a tensioning spring movably mounted on the T-shaped guide rod, and one end of the T-shaped guide rod is fixedly connected to the graphite sealing bowl.

[0017] Technical effects and advantages of the utility model:

[0018] The utility model discloses an offshore drilling blowdown igniter. When igniting the natural gas blown off the drilling well at sea, a plurality of Tesla valve tubes are arranged between the gas collecting cylinder and the ignition tube. The Tesla valve principle of the Tesla valve tube is utilized to provide a circulation pipeline for the ignition gas source. When increasing the intake pressure of the ignition gas source, the Tesla valve tube utilizes the differentiation of flow direction resistance to increase the resistance of gas source reflux. In this way, the gas source in the ignition tube is not easy to enter the gas collecting cylinder. At the same time, because a plurality of Tesla valve tubes with branches are used as the intake pipeline for the ignition tube, while ensuring the effective amount of the gas source in the ignition tube, the purpose of preventing the gas collecting cylinder from backfire can be achieved because the air flow area of ​​a single Tesla valve tube is small.

[0019] The utility model is an offshore drilling blowout igniter, by arranging a graphite sealing bowl, a gas source control board and a pressure opening and closing component in a gas collecting cylinder. The pressure opening and closing component can use the intake pressure of the gas collecting cylinder to open and control the expansion and contraction amount of the graphite sealing bowl, so that the graphite sealing bowl can realize the size control of the gas volume together with the valve of the gas source control board, so that the graphite sealing bowl can control the intake volume along with the pressure of the intake gas source. In this way, when the gas source pressure in the gas collecting cylinder is reduced, the ignition gas source in the ignition tube is less likely to enter the gas collecting cylinder, and because the graphite sealing bowl is not affected by the combustible gas, while improving the sealing durability, the anti-backfire effect can be further achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The utility model is a schematic diagram of the planar structure of an offshore drilling spray igniter.

[0021] Figure 2 The utility model is a schematic diagram of the structure of the gas collecting cylinder, Tesla valve tube and ignition tube.

[0022] Figure 3 It is a structural schematic diagram of the gas source control panel, graphite sealing bowl and pressure switch assembly of the utility model.

[0023] Figure 4 It is a structural schematic diagram of the air source control panel of the utility model.

[0024] The accompanying drawings are marked as follows: 1. Gas collecting cylinder; 11. Anti-backfire chamber; 2. Tesla valve tube; 3. Ignition tube; 31. Combustion chamber; 4. Ignition rod; 5. Gas source control panel; 6. Valve; 7. Graphite sealing bowl; 8. Pressure opening and closing assembly; 81. Support cover; 82. T-shaped guide rod; 83. Tensioning spring; 9. Gas source connecting pipe; 10. Ceramic sealing plug. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Combined with reference Figure 1-Figure 4 The utility model provides an offshore drilling blowdown igniter, which is used to ignite the natural gas blown off from offshore drilling, and comprises a gas collecting cylinder 1, a Tesla valve pipe 2, an ignition pipe 3, a ignition rod 4, a gas source control board 5 and a pressure switch component 8.

[0027] The gas collecting cylinder 1 is externally connected to a combustible gas source, and the gas source can be ignited in conjunction with a ignition rod 4 so as to ignite the natural gas released from offshore drilling.

[0028] An anti-backfire chamber 11 is provided in the gas collecting cylinder 1, and a combustion chamber 31 is provided in the ignition tube 3. The diameter of the anti-backfire chamber 11 is larger than the diameter of the combustion chamber 31. The advantage of the size setting is that a reliable air intake for ignition power supply can be ensured in the combustion chamber 31. The bottom of the gas collecting cylinder 1 is fixedly connected with a gas source connecting pipe 9, and the gas source connecting pipe 9 can be externally connected to a gas source for ignition.

[0029] The connection between the ignition rod 4 and the gas cylinder 1 and the ignition tube 3 is fixedly connected with a ceramic sealing plug 10, which is used to increase the sealing performance of the connection between the ignition rod 4 and the gas cylinder 1 and the ignition tube 3, and the ceramic sealing plug 10 has high temperature resistance.

[0030] The Tesla valve tube 2 is connected to the gas collecting cylinder 1. There are multiple Tesla valve tubes 2. In the present application, the Tesla valve tube 2 is made into a tube structure. The Tesla valve tube 2 can be distributed in an annular manner in the ignition tube 3 to ensure that the air intake of multiple Tesla valve tubes 2 meets the ignition gas source demand of the ignition tube 3.

[0031] Specifically, when the Tesla valve tube 2 is fed into the ignition tube 3 through the gas collecting cylinder 1 to supply the ignition source, the Tesla valve principle of the Tesla valve tube 2 is used to provide a circulation pipeline for the ignition gas source. When the total air intake of multiple Tesla valve tubes 2 meets the ignition requirement of the combustion chamber 31, the Tesla valve tube 2 can increase the air intake pressure of the ignition gas source. At the same time, the Tesla valve tube 2 utilizes the difference in resistance in the positive and reverse flow directions to increase the resistance to the reflux of the gas source, so that the ignition gas source in the combustion chamber 31 is not easy to enter the gas collecting cylinder. At the same time, because multiple branched Tesla valve tubes 2 are used as the air intake pipeline for the ignition tube 3, when the total air intake of multiple Tesla valve tubes 2 meets the ignition requirement of the ignition tube 3, the air flow area of ​​a single Tesla valve tube 2 is small and limited, so that the gas source in the combustion chamber 31 is not easy to enter the Tesla valve tube 2. In this way, the position of the Tesla valve tube 2 can provide the first anti-flashback protection section for the anti-flashback chamber 11 of the gas collecting cylinder 1.

[0032] The ignition rod 4 is sequentially arranged on the gas collecting cylinder 1 and the ignition tube 3 , and the ignition rod 4 is used to ignite the gas source entering the combustion chamber 31 in the ignition tube 3 .

[0033] The gas source control board 5 is fixedly connected in the gas collecting cylinder 1 , and a graphite sealing bowl 7 is movably provided on the gas source control board 5 .

[0034] A valve 6 is provided on the air source control board 5, and the graphite sealing bowl 7 is in close contact with the valve 6 of the air source control board 5. The size of the valve 6 is matched with the size of the graphite sealing bowl 7, and the position of the valve 6 can control the air intake amount of the ignition tube 3. The graphite sealing bowl 7 is arranged in a bowl-shaped structure, so that the graphite sealing bowl 7 can perform a linear expansion and contraction change at the position of the valve 6, thereby adjusting the air intake amount of the valve 6. In addition, the graphite sealing bowl 7 has the characteristics of wear resistance, heat resistance, high sealing and corrosion resistance, which can improve the durability as an anti-tempering seal.

[0035] The pressure opening and closing assembly 8 is arranged on the graphite sealing bowl 7 and the gas collecting cylinder 1. The pressure opening and closing assembly 8 includes a support cover 81 fixedly connected to the inner bottom wall of the anti-backfire chamber 11, a T-shaped guide rod 82 slidably connected to the support cover 81, and a tensioning spring 83 movably sleeved on the T-shaped guide rod 82. One end of the T-shaped guide rod 82 is fixedly connected to the graphite sealing bowl 7. The T-shaped guide rod 82 can adopt a rectangular rod structure. The T-shaped guide rod 82 passes through and is slidably arranged on the support cover 81.

[0036] Specifically, when high-pressure ignition gas is fed into the gas collecting cylinder 1 at the position of the gas source pipe 9, the gas source pressure acts on the graphite sealing bowl 7 to provide a lifting action, and the T-shaped guide rod 82 can slide on the support cover 81, and the tensioning spring 83 is compressed at the same time, so that the graphite sealing bowl 7 can be opened on the valve 6 to allow the gas source to be fed into the ignition tube 3 through the Tesla valve tube 2 until the pressure of the gas source entering is reduced. The reduction in pressure can make the tensioning spring 83 adaptively deform and stretch, and the T-shaped guide rod 82 can adjust the position of the graphite sealing bowl 7 at the valve 6, that is, reduce the air intake. In this way, when the gas source pressure in the anti-backfire chamber 11 is reduced, the ignition gas source in the ignition tube 3 is less likely to pass through the Tesla valve tube 2 and then enter the anti-backfire chamber 11, which can improve the safety of the ignition gas source access equipment, so that a double anti-backfire structure is used for ignition anti-backfire protection, which can improve the reliability of the ignition device.

Claims

1. An offshore drilling blowdown igniter, which is used to ignite the natural gas blown down from offshore drilling, characterized in that: include: A gas collecting cylinder (1), wherein the gas collecting cylinder (1) is externally connected to a combustible gas source; A Tesla valve tube (2), the Tesla valve tube (2) being connected to the gas collecting cylinder (1), and there being a plurality of Tesla valve tubes (2); An ignition tube (3), the ignition tube (3) being connected to a plurality of Tesla valve tubes (2); A sparking rod (4), the sparking rod (4) being sequentially arranged through the gas collecting cylinder (1) and the ignition tube (3); An air source control panel (5), the air source control panel (5) being fixedly connected to the air collecting cylinder (1), and a graphite sealing bowl (7) being movably provided through the air source control panel (5); A pressure opening and closing component (8), wherein the pressure opening and closing component (8) is arranged on the graphite sealing bowl (7) and the gas collecting cylinder (1).

2. The offshore drilling blowdown igniter according to claim 1, characterized in that: The gas collecting cylinder (1) is provided with an anti-flashback chamber (11), the ignition tube (3) is provided with a combustion chamber (31), and the diameter of the anti-flashback chamber (11) is larger than the diameter of the combustion chamber (31).

3. The offshore drilling blowdown igniter according to claim 1, characterized in that: The bottom of the gas collecting cylinder (1) is fixedly connected to a gas source connecting pipe (9).

4. The offshore drilling blowdown igniter according to claim 1, characterized in that: The connection points between the ignition rod (4), the gas collecting cylinder (1) and the ignition tube (3) are all fixedly connected with a ceramic sealing plug (10).

5. The offshore drilling blowdown igniter according to claim 1, characterized in that: The air source control plate (5) is provided with an air valve (6), and the graphite sealing bowl (7) is in close contact with the air valve (6) of the air source control plate (5).

6. The offshore drilling blowdown igniter according to claim 2, characterized in that: The pressure opening and closing assembly (8) comprises a support cover (81) fixedly connected to the inner bottom wall of the anti-backfire chamber (11), a T-shaped guide rod (82) slidably connected to the support cover (81), and a tensioning spring (83) movably sleeved on the T-shaped guide rod (82), one end of the T-shaped guide rod (82) being fixedly connected to the graphite sealing bowl (7).

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