Direct injection type blowout ignition device

Abstract

The utility model discloses a direct injection type blowout ignition device, which relates to the technical field of oil and gas exploitation equipment and comprises a main fuel spray pipe, an electronic ignition component, a fuel supply cabinet and a control cabinet, a horizontal fuel pump and an oil tank are arranged in the fuel supply cabinet, and the main fuel spray pipe is connected with the horizontal fuel pump through an oil pipe. The electronic ignition assembly is connected with the control cabinet through an ignition wire, the control cabinet is in control connection with the horizontal fuel pump, the horizontal fuel pump is an oil pump with the working pressure being the output pressure not smaller than 1 MPa, a nozzle is installed at the other end of the main fuel spray pipe, and the hole diameter of the nozzle is 1.2-4.0 mm. According to the ignition device, an air compressor is not adopted for fuel atomization any more, and the ignition efficiency is improved. Pipelines and cables involved in the ignition device are reduced, and the ignition device is more convenient to disassemble, assemble and carry.

Description

Technical Field

[0001] This utility model relates to the field of oil and gas extraction equipment technology, specifically to a direct injection flare ignition device. Background Technology

[0002] During oil drilling, when drilling reaches a high-pressure oil and gas layer, if the drilling fluid column pressure is lower than the layer pressure, the high-pressure oil and gas flow will invade the wellbore and gradually rise towards the wellhead, potentially causing a blowout or well kick. In this situation, drilling workers will shut off the blowout preventer and take appropriate measures such as throttling and venting. However, the vented natural gas needs to be ignited; otherwise, if it mixes with air in a certain proportion, there is a risk of explosion. Furthermore, the vented gas contains harmful gases such as H2S, which can endanger human lives.

[0003] Currently, there are two types of fuel ignition devices used on-site. The first type uses compressed air to atomize the fuel, then uses an electronic ignition gun or similar structure to ignite the atomized fuel, continuously supplying fuel for a certain period until the released natural gas is ignited, at which point the fuel supply stops. This type of ignition device has a large flame and a high ignition success rate, but in addition to its own circuitry and control lines, it requires an external air compressor to operate. Therefore, this device involves many pipes and cables, making on-site installation and disassembly extremely complex and inconvenient to use. The second type is a diesel ignition device, which does not require an air compressor to atomize the diesel fuel. However, this diesel ignition device requires a nozzle with an extremely small orifice diameter (less than 1mm) to achieve ignition, and the flame is very small, unable to achieve large flame ignition at distances of 2m or more. The ignition success rate is low, and the nozzle often becomes clogged, making it unsuitable for on-site use. In addition, when installing this diesel ignition device, the electromagnetic pump needs to be installed close to the nozzle, and the electromagnetic pump is also at risk of being damaged by the flame. Utility Model Content

[0004] The present invention aims to solve the above-mentioned technical problems. The present solution proposes a new direct injection ignition device that eliminates the need for an air compressor to atomize fuel, reduces the number of pipes and cables involved in the ignition device, and makes disassembly, assembly and transportation more convenient.

[0005] To achieve the above-mentioned objectives, the technical solution of this utility model is as follows:

[0006] A direct-injection ignition device includes a main fuel injector, an electronic ignition assembly, a fuel supply cabinet, and a control cabinet. The fuel supply cabinet contains a horizontal fuel pump and a fuel tank. The main fuel injector is connected to the horizontal fuel pump via a fuel pipe. The electronic ignition assembly is connected to the control cabinet via an ignition wire. The control cabinet is connected to the horizontal fuel pump via a control connection. The horizontal fuel pump is a pump with an operating pressure and an output pressure of not less than 1 MPa. A nozzle is installed at the other end of the main fuel injector, and the nozzle orifice diameter is 1.2~4.0 mm.

[0007] Furthermore, the main fuel nozzle and the nozzle are equipped with a burner shield, and the bottom of the burner shield has several air inlets.

[0008] Furthermore, the fire head shield includes shield one and shield two, which are connected by a flange, and shield two is provided with an air inlet.

[0009] Furthermore, the air inlet can be a round hole, an oval hole, a strip-shaped hole, or an irregularly shaped hole.

[0010] Furthermore, the electronic ignition assembly includes a conductive rod and an ignition nozzle.

[0011] Furthermore, an ignition bend is provided between the conductive rod and the ignition nozzle, with the ignition nozzle positioned above and in front of the nozzle.

[0012] Furthermore, the ignition nozzle is perpendicular to the direction of the nozzle.

[0013] Furthermore, a heat-resistant oil pipeline is installed between the main fuel injection pipe and the oil pipeline, and a check valve is installed between the main fuel injection pipe and the heat-resistant oil pipeline.

[0014] Furthermore, a heat-insulating protective box is provided on the outside of the conductive rod and oil pipe near the electronic ignition assembly.

[0015] Furthermore, a support assembly is provided on the outside of the heat insulation protection box, and the heat insulation protection box is installed on the discharge pipeline through the support assembly.

[0016] The beneficial effects of this utility model are:

[0017] I. In this utility model, the direct-injection ignition device no longer uses an air compressor to compress and atomize the fuel. Instead, it directly uses a horizontal fuel pump with an output pressure of not less than 1 MPa, in conjunction with a nozzle. The nozzle's orifice diameter is designed to be 1.2~4.0 mm, which also atomizes the fuel. It can achieve ignition at a distance of 2~6 m and supports both short-time ignition and continuous flame ignition modes, with a high ignition success rate. Because this device no longer uses an air compressor, its overall structure is simpler than existing devices, occupying less space and involving fewer structures, pipelines, and cables. It is also easier to disassemble and assemble, and the equipment cost is lower. In addition, the device's simpler structure and easier operation allow for simple liquid-gas separation of mud.

[0018] Second, in this utility model, the device can be connected to the control cabinet via a remote control device to achieve remote control ignition, keeping the staff in a safe area.

[0019] Third, in this utility model, the main fuel injection pipe and nozzle are provided with a burner shield, and the bottom of the burner shield is provided with several air inlets. The burner shield and air inlets help to improve the ignition success rate.

[0020] IV. In this utility model, the burner head cover includes a first cover and a second cover, which are connected by a flange. This facilitates the installation of the main fuel injection pipe and nozzle inside the burner head cover, as well as components such as the electronic ignition assembly, ignition wire, and fuel lines. Simultaneously, a bracket can be added to the flange area to fix the electronic ignition assembly and the main fuel injection pipe, preventing damage to components or fuel dripping due to structural vibration. The second cover is provided with an air inlet, allowing air to enter the ignition chamber containing the electronic ignition assembly and nozzle, ensuring a high ignition success rate.

[0021] V. In this utility model, the air inlet hole is a round hole, an elliptical hole, a strip-shaped hole or an irregularly shaped hole, preferably a round hole with a diameter of 30mm or an elliptical hole with a minor diameter of 30mm.

[0022] VI. In this utility model, a heat-resistant oil pipe is provided between the main fuel injection pipe and the oil pipe, and a check valve is provided between the main fuel injection pipe and the heat-resistant oil pipe to prevent fuel backflow.

[0023] VII. In this utility model, a heat-insulating protective box is provided on the outside of the conductive rod and oil pipe near the electronic ignition component to protect the internal conductive rod and oil pipe from heat radiation damage and shorten the life of the equipment. A support component is provided on the outside of the heat-insulating protective box, and the heat-insulating protective box is installed on the discharge line through the support component to facilitate successful ignition. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of a direct injection ignition device.

[0025] Figure 2 This is a schematic diagram of another implementation of the direct injection ignition device.

[0026] Figure 3 This is a partial enlarged view of the direct injection ignition device.

[0027] Figure 4 This is a partially enlarged view of another embodiment of the direct injection ignition device.

[0028] Figure 5 This is a partially enlarged view of another implementation of the direct injection ignition device.

[0029] Figure 6This is a schematic diagram of another preferred embodiment of the direct injection ignition device.

[0030] The components include: 1. Main fuel nozzle; 2. Electronic ignition assembly; 3. Fuel supply cabinet; 4. Control cabinet; 5. Fuel pipe; 6. Ignition wire; 7. Nozzle; 8. Burner shield; 9. Air inlet; 10. Flange; 11. Check valve; 12. Heat insulation protection box; 13. Support assembly; 14. Exhaust line; 15. Ignition chamber; 16. Power cable; 17. Heat-resistant oil pipe; 2.1. Conductive rod; 2.2. Ignition nozzle; 2.3. Ignition elbow; 3.1. Horizontal fuel pump; 3.2. Fuel tank; 8.1. Shield one; 8.2. Shield two. Detailed Implementation

[0031] The present invention will be further described in detail below with reference to the embodiments, but the implementation of the present invention is not limited thereto.

[0032] Example 1

[0033] This embodiment is a basic implementation, a direct-injection ignition device, relating to the field of oil and gas extraction equipment technology, including a main fuel nozzle 1, an electronic ignition assembly 2, a fuel supply cabinet 3, and a control cabinet 4. (See reference...) Figure 1 The fuel supply cabinet 3 is equipped with a horizontal fuel pump 3.1 and a fuel tank 3.2. The main fuel injection pipe 1 is connected to the horizontal fuel pump 3.1 through a fuel pipe 5. The electronic ignition assembly 2 is connected to the control cabinet 4 through an ignition wire 6. The control cabinet 4 is connected to the horizontal fuel pump 3.1 for control. The horizontal fuel pump 3.1 is a fuel pump with an output pressure of not less than 1MPa. The other end of the main fuel injection pipe 1 is equipped with a nozzle 7 with an orifice diameter of 2mm.

[0034] In practical use, the orifice diameter of nozzle 7 should be adjusted according to the working pressure of horizontal fuel pump 3.1. The orifice diameter of nozzle 7 is generally designed to be in the range of 1.2~4.0mm. A horizontal fuel pump 3.1 with a working pressure of 1~5MPa is recommended.

[0035] The main fuel nozzle 1 and electronic ignition assembly 2 of the entire direct injection flare ignition device are installed at the inlet of the flare line 14, and the control cabinet 4, oil pipe 5, ignition wire 6, etc. are fixed at the front end of the flare line 14.

[0036] When igniting, press the ignition start button at control cabinet 4. Control cabinet 4 is connected to the local power supply through power cable 16. Control cabinet 4 controls the horizontal fuel pump 3.1 to start, and delivers fuel into the nozzle 7 of the ignition chamber 15 of the direct injection ignition device. The electronic ignition component 2 starts to ignite, the ignition flame is ignited, and then the released natural gas is ignited and burned off.

[0037] Example 2

[0038] This embodiment is a further optimization of embodiment 1, the difference being that, as referenced... Figure 2 The fuel nozzle 1 and the nozzle 7 are provided with a burner shield 8, and the bottom of the burner shield 8 is provided with several air inlets 9.

[0039] Preferably, the air inlet 9 is a round hole, an elliptical hole, a strip hole, or an irregularly shaped hole.

[0040] Example 3

[0041] The difference between this embodiment and embodiments 1-2 is that the fire head shield 8 includes shield one 8.1 and shield two 8.2, as shown in the reference. Figure 3 The first protective cover 8.1 and the second protective cover 8.2 are connected by a flange 10. The second protective cover 8.2 is provided with an air inlet 9. The air inlet 9 is a circular hole with a diameter of 30mm.

[0042] Example 4

[0043] Compared with embodiments 1-3, the difference in this embodiment is that the electronic ignition assembly 2 includes a conductive rod 2.1 and an ignition nozzle 2.2, as shown in the reference. Figure 4 The conductive rod 2.1 and the ignition nozzle 2.2 are designed horizontally, which facilitates the design of a protective cover and reduces the heat radiation received by the ignition nozzle 2.2.

[0044] Example 5

[0045] Compared with embodiments 1-4, the difference in this embodiment is that the electronic ignition assembly 2 includes a conductive rod 2.1 and an ignition nozzle 2.2, with an ignition bend 2.3 between the conductive rod 2.1 and the ignition nozzle 2.2. The ignition nozzle 2.2 is positioned above and in front of the nozzle 7. (Refer to...) Figure 3 .

[0046] Preferably, the ignition nozzle 2.2 is perpendicular to the direction of the nozzle 7. Compared with the conventional upward-facing design (most of the ignition nozzles 2.2 in our prior ignition devices have an upward-facing structure), this design prevents fuel droplets from entering the ignition nozzle 2.2 and damaging it.

[0047] In addition, this structure generally exposes the ignition elbow 2.3 and the conductive rod 2.1 to the outside, so as to prevent oil droplets generated in the protective cover (or ignition chamber 15) from adhering to the conductive rod 2.1.

[0048] Example 6

[0049] Compared with embodiments 1-5, the difference in this embodiment is that a heat-resistant oil pipe 17 is provided between the main fuel injection pipe 1 and the oil pipe 5. (Refer to...) Figure 5 A check valve 11 is provided between the main fuel injection pipe 1 and the heat-resistant oil pipeline 17 to prevent fuel backflow.

[0050] Example 7

[0051] Compared with embodiments 1-6, the difference in this embodiment is that a heat insulation protection box 12 is provided outside the conductive rod 2.1 near the electronic ignition assembly 2 and the oil pipe 5. (Refer to...) Figure 6 .

[0052] Example 8

[0053] The difference between this embodiment and embodiments 1-7 is that, in reference to Figure 6 The heat insulation protection box 12 is provided with a support component 13 on the outside, and the heat insulation protection box 12 is installed on the discharge pipeline 14 through the support component 13.

[0054] Example 9

[0055] To facilitate public understanding of this solution, this embodiment uses a certain model of the company's direct injection ignition device as an example to further illustrate this solution.

[0056] A direct-injection ignition device, relating to the field of oil and gas extraction equipment technology, includes a main fuel nozzle 1, an electronic ignition assembly 2, a fuel supply cabinet 3, and a control cabinet 4. (Reference) Figure 3 , 6 The fuel supply cabinet 3 is equipped with a horizontal fuel pump 3.1 and a fuel tank 3.2. The main fuel injection pipe 1 is connected to the horizontal fuel pump 3.1 through a fuel pipe 5. The electronic ignition assembly 2 is connected to the control cabinet 4 through an ignition wire 6. The control cabinet 4 is connected to the horizontal fuel pump 3.1 for control. The horizontal fuel pump 3.1 is a fuel pump with an output pressure of not less than 1MPa. The other end of the main fuel injection pipe 1 is equipped with a nozzle 7 with an orifice diameter of 1.5mm.

[0057] In this embodiment, a burner shield 8 is provided outside the main fuel nozzle 1 and the nozzle 7, and a plurality of air inlets 9 are provided at the bottom of the burner shield 8. The air inlets 9 are circular holes with a diameter of 30 mm.

[0058] In this embodiment, the fire head cover 8 includes a first cover 8.1 and a second cover 8.2, which are connected by a flange 10. The second cover 8.2 is provided with an air inlet 9.

[0059] In this embodiment, the electronic ignition assembly 2 includes a conductive rod 2.1 and an ignition nozzle 2.2. An ignition bend 2.3 is also provided between the conductive rod 2.1 and the ignition nozzle 2.2. The ignition nozzle 2.2 is located in front of the nozzle 7 and is perpendicular to the direction of the nozzle 7.

[0060] In this embodiment, a heat-resistant oil pipe 17 is provided between the main fuel injection pipe 1 and the oil pipe 5, and a check valve 11 is provided between the main fuel injection pipe 1 and the heat-resistant oil pipe 17.

[0061] In this embodiment, a heat insulation protection box 12 is provided outside the conductive rod 2.1 and oil pipe 5 near the electronic ignition assembly 2.

[0062] In this embodiment, a support component 13 is provided on the outside of the heat insulation protection box 12, and the heat insulation protection box 12 is installed on the discharge pipeline 14 through the support component 13.

[0063] Additionally, the control cabinet 4 of the device is connected to the local power supply via power cable 16. Remote control devices (such as intelligent dual-channel remote controllers) connected to the controller can also be installed. During installation, the main fuel nozzle 1, electronic ignition assembly 2, etc., of the direct injection flare ignition device are installed at the end of the flare line 14, while the remaining fuel lines 5, ignition wires 6, etc., can be fixed to the flare line 14 at the front end using pipe clamps.

[0064] When igniting, press the ignition start button at control cabinet 4 (if a remote control device is provided, press the ignition button on the remote control to send an "ignition" signal to control cabinet 4). Control cabinet 4 controls the horizontal fuel pump 3.1 to start, delivering fuel into the nozzle 7 of the direct injection ignition device. The electronic ignition component 2 starts ignition, the ignition flame is ignited, and then the released natural gas is ignited and burned off.

[0065] The direct-injection ignition device has a simple structure, is easy to operate, and can perform simple liquid-gas separation of mud. It can also be operated remotely, avoiding the safety risks of manual close-range ignition.

Claims

1. A direct injection poppet ignition device characterized by: The application relates to a main fuel injection pipe (1), an electronic ignition assembly (2), a fuel supply cabinet (3) and a control cabinet (4), wherein the fuel supply cabinet (3) is provided with a horizontal fuel pump (3.1) and an oil tank (3.2), the main fuel injection pipe (1) is connected with the horizontal fuel pump (3.1) through an oil pipe (5), the electronic ignition assembly (2) is connected with the control cabinet (4) through an ignition wire (6), the control cabinet (4) is connected with the horizontal fuel pump (3.1) in control mode, the horizontal fuel pump (3.1) is an oil pump with an output pressure not less than 1MPa, the other end of the main fuel injection pipe (1) is provided with a nozzle (7), and the aperture of the nozzle (7) is 1.2-4.0mm.

2. A direct injection spark and blast igniter as defined in claim 1 wherein: The main fuel injection pipe (1) and the nozzle (7) are externally provided with a flame head protective cover (8), and a plurality of air inlet holes (9) are formed in the bottom of the flame head protective cover (8).

3. A direct injection spark and blast igniter as defined in claim 2 wherein: The flame head protective cover (8) comprises a cover one (8.1) and a cover two (8.2), the cover one (8.1) and the cover two (8.2) are connected through a flange plate (10), and the cover two (8.2) is provided with the air inlet holes (9).

4. A direct injection spark and glow plug ignition device according to claim 2 or 3, characterised in that: The air inlet holes (9) are circular holes, oval holes or strip-shaped holes.

5. A direct injection spark and blast igniter as defined in claim 1 wherein: The electronic ignition assembly (2) comprises a conductive rod (2.1) and an ignition nozzle (2.2).

6. A direct injection spark and blast igniter as defined in claim 5 wherein: A spark elbow (2.3) is further arranged between the conductive rod (2.1) and the ignition nozzle (2.2), and the ignition nozzle (2.2) is arranged in front of the nozzle (7).

7. A direct injection spark and blast igniter as defined in claim 6 wherein: The ignition nozzle (2.2) is perpendicular to the direction of the nozzle (7).

8. A direct injection spark and blast igniter as defined in claim 1 wherein: A heat-resistant oil pipe (17) is arranged between the main fuel injection pipe (1) and the oil pipe (5), and a check valve (11) is arranged between the main fuel injection pipe (1) and the heat-resistant oil pipe (17).

9. A direct injection spark and blast igniter as defined in claim 1 wherein: A heat insulation protection box (12) is arranged outside the conductive rod (2.1) of the electronic ignition assembly (2) and the oil pipe (5).

10. A direct injection spark and blast igniter as defined in claim 9 wherein: A support assembly (13) is arranged outside the heat insulation protection box (12), and the heat insulation protection box (12) is installed on a spray pipe line (14) through the support assembly (13).

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