Plasma uninterrupted ignition system for petroleum operation well control

Abstract

The utility model relates to the technical field of petroleum well control, and particularly discloses a plasma uninterrupted ignition system for petroleum operation well control, which comprises an ignition equipment body and a check valve arranged at the bottom end of the ignition equipment body, and the top end of the ignition equipment body is fixedly connected with a torch head. The outer side of the ignition equipment body and the outer side of the torch head are jointly provided with a wind and sand prevention component, the torch head is wrapped through upward movement of the sheath, the upper side of the torch head is shielded by the two top covers, and the torch head is protected after the sheath moves upwards, so that the torch head is prevented from being damaged. And the two top covers on the upper side of the sheath also wrap the upper side of the torch head, so that the torch head and an igniter in the torch head are prevented from being damaged by external wind and sand, sand and dust are also prevented from being gathered in the torch head to influence the subsequent gas ignition efficiency, and workers are also prevented from being scalded when protective measures are taken on the torch head.

Description

Technical Field

[0001] The utility model relates to the technical field of oil well control, in particular to a plasma uninterrupted ignition system for oil well control. Background Art

[0002] During the oil drilling process, when drilling to the high-pressure oil and gas layer, if the liquid column pressure of the drilling fluid is lower than the pressure of the oil and gas layer, the high-pressure oil and gas flow will invade the wellbore and gradually rise to the wellhead, so as to push out the drilling fluid and form overflow or well kick. The released natural gas may explode when mixed with air in a certain proportion, and the gas containing H2S may also endanger human life.

[0003] The plasma ignition system converts AC220V industrial frequency alternating current into high-frequency pulse direct current through a high-voltage generator, and then transmits it to the ignition nozzle installed on the top of the torch through a dedicated high-voltage cable, so that the ignition nozzle continuously sprays out electronic flames with a temperature exceeding 1200℃ and a length exceeding 120mm, thereby directly igniting the air released by the torch and finally igniting the sprayed natural gas;

[0004] The existing technology is to wrap the torch head with a transparent film to prevent the intrusion of wind and sand. However, after the combustion is completed, there will be heat on the surface of the torch head, which will burn the film. Therefore, it needs to be cooled before operation. If the torch head is not completely cooled, it is very easy to cause burns to the staff. Summary of the invention

[0005] The purpose of the utility model is to provide a plasma uninterrupted ignition system for oil well control, which can protect the flare head to prevent external wind and sand from damaging the flare head and the igniter inside it, and prevent sand and dust from accumulating inside the flare head and affecting the efficiency of subsequent ignition of gas, and prevent workers from being burned when taking protective measures on the flare head, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a plasma uninterrupted ignition system for oil well control, comprising an ignition device body and a check valve arranged at the bottom end of the ignition device body, a flare head is fixedly connected to the top end of the ignition device body, and a wind and sand prevention component is provided on the outside of the ignition device body and the outside of the flare head, and the wind and sand prevention component comprises a high-voltage discharge rod slidably connected to the inside of the flare head, and the high-voltage discharge rod penetrates the flare head;

[0007] The top of the torch head is fixedly connected to an igniter, and the outer side of the ignition device body is fixedly connected to two fixing plates, the upper sides of the two fixing plates are fixedly connected to electric push rods, and the tops of the two electric push rods are fixedly connected to the same sleeve, which is arranged on the outer side of the torch head, and the upper side of the sleeve is hinged with two top covers through hinges, and the two top covers are overlapped on the upper side of the same torch head.

[0008] Preferably, the shape of the torch head matches the shape of the inner cavity of the sheath, and the two top covers match the shape of the sheath after contacting.

[0009] Preferably, the outer side of the sheath and the surface of the top cover are jointly provided with a supporting component, and the supporting component comprises two supporting plates fixedly connected to the outer side of the sheath, and the two supporting plates are both inclined upward, and the inclination directions of the two supporting plates are opposite.

[0010] Preferably, the two top covers are fixedly connected to a fixing block on one side away from each other, and the two top covers are inclined toward one side of the flare head and overlap with the outer side of the flare head.

[0011] Preferably, guide grooves are provided inside the two fixing blocks, the two guide grooves are inclined, and the fixing blocks are trapezoidal.

[0012] Preferably, magnet balls are slidably connected in the guide grooves, and the two magnet balls are magnetically adsorbed when they are close to each other.

[0013] Preferably, two slide grooves are provided on the outer side of the torch head, and two sliding blocks are fixedly connected to the inner wall of the sleeve, and the two sliding blocks are slidably connected in the two slide grooves respectively.

[0014] Preferably, the two guide grooves are inclined toward the torch head after rotation, and the two fixing blocks are overlapped with each other after rotation.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The flare head is wrapped by the upward movement of the sheath, and the two top covers will also shield the upper side of the flare head. Since the sheath will protect the flare head after moving upward, and the two top covers on the upper side of the sheath will also wrap the upper side of the flare head, so as to prevent the external wind and sand from damaging the flare head and the igniter inside it, and also prevent the sand and dust from accumulating inside the flare head and affecting the efficiency of subsequent ignition of gas, and also prevent the staff from being burned when taking protective measures on the flare head;

[0017] 2. The rotation speed of the top cover is accelerated by sliding the magnet ball inside the guide groove, and the top cover is still in an inclined state after being supported by the support plate. After the two top covers are lifted by the torch head, the magnet ball inside the guide groove will roll to the other side of the guide groove. At this time, the magnet ball can be used as a counterweight to accelerate the rotation of the top cover, and finally it is supported by the support plate, and the two top covers are still in an inclined state, so that the top cover automatically covers the top of the torch head after the sheath descends. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is the overall structural view of the utility model;

[0020] Figure 2 It is a schematic diagram of a half-section structure of the utility model;

[0021] Figure 3 It is a schematic diagram of a half-section structure of a torch head of the utility model;

[0022] Figure 4 It is a schematic diagram of a half-section structure of the sheath of the utility model;

[0023] Figure 5 It is a schematic diagram of the half-section structure of the fixing block of the utility model.

[0024] Description of reference numerals:

[0025] 1. Ignition equipment body; 2. Check valve; 3. Torch head; 4. Anti-wind and sand components; 41. High-voltage discharge rod; 42. Ignitor; 43. Fixed plate; 44. Electric push rod; 45. Sheath; 46. Top cover; 5. Support component; 51. Support plate; 52. Fixed block; 53. Guide groove; 54. Magnet ball; 55. Slide groove; 56. Slider. DETAILED DESCRIPTION

[0026] 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.

[0027] The utility model provides a technical solution:

[0028] See also Figures 1 to 5 A plasma uninterrupted ignition system for oil well control comprises an ignition device body 1 and a check valve 2 arranged at the bottom of the ignition device body 1, a flare head 3 is fixedly connected to the top of the ignition device body 1, and a wind and sand prevention component 4 is provided on the outer side of the ignition device body 1 and the outer side of the flare head 3, and the wind and sand prevention component 4 comprises a high-voltage discharge rod 41 slidably connected to the inside of the flare head 3, and the high-voltage discharge rod 41 penetrates the flare head 3;

[0029] The top of the torch head 3 is fixedly connected to the igniter 42, and the outer side of the ignition device body 1 is fixedly connected to two fixing plates 43, the upper sides of the two fixing plates 43 are fixedly connected to electric push rods 44, and the tops of the two electric push rods 44 are fixedly connected to the same sleeve 45, which is sleeved on the outer side of the torch head 3. The upper side of the sleeve 45 is hinged with two top covers 46 through hinges, and the two top covers 46 are overlapped on the upper side of the same torch head 3.

[0030] The shape of the torch head 3 matches the shape of the inner cavity of the sheath 45 , and the two top covers 46 match the shape of the sheath 45 after contacting.

[0031] By adopting the above technical solution, first, the check valve 2 transports the gas to the inside of the ignition equipment body 1, and after it is discharged through the torch head 3, an electric spark can be generated through the high-voltage discharge rod 41 to ignite the gas. When the gas stops being transported, the electric push rod 44 above the fixed plate 43 can be started to lift the sheath 45, so that the sheath 45 gradually wraps the torch head 3. After the sheath 45 completely wraps it, the two top covers 46 lose the support from the torch head 3, so that the two top covers 46 will directly cover the upper side of the torch head 3 and seal the upper side of the torch head 3. At the same time, as the sheath 45 gradually moves upward, The high-voltage discharge rod 41 fixed by the sheath 45 will also move upward, and drive the igniter 42 above the high-voltage discharge rod 41 to gradually approach the top cover 46. If the top cover 46 is opened manually at this time, the igniter 42 can be maintained or replaced. Since the sheath 45 will protect the torch head 3 after moving upward, the two top covers 46 on the upper side of the sheath 45 will also wrap the upper side of the torch head 3 to prevent external wind and sand from damaging the torch head 3 and the igniter 42 inside it, and also prevent dust from accumulating inside the torch head 3 and affecting the efficiency of subsequent ignition of the gas, and also prevent the staff from being burned when taking protective measures on the torch head 3.

[0032] Specifically, Figure 4 and Figure 5As shown, the outer side of the sheath 45 and the surface of the top cover 46 are jointly provided with a support component 5, and the support component 5 includes two support plates 51 fixedly connected to the outer side of the sheath 45. The two support plates 51 are both inclined upward, and the inclination directions of the two support plates 51 are opposite.

[0033] A fixing block 52 is fixedly connected to one side of the two top covers 46 that are away from each other. The two top covers 46 are inclined toward one side of the flare head 3 and overlap with the outer side of the flare head 3 .

[0034] A guide groove 53 is formed inside the two fixing blocks 52 . The two guide grooves 53 are formed at an angle, and the fixing blocks 52 are trapezoidal.

[0035] The guide grooves 53 are slidably connected with magnet balls 54 , and the two magnet balls 54 are magnetically attracted when they are close to each other.

[0036] Two slide grooves 55 are formed on the outer side of the torch head 3 , and two sliders 56 are fixedly connected to the inner wall of the sheath 45 . The two sliders 56 are slidably connected in the two slide grooves 55 , respectively.

[0037] The two guide grooves 53 are tilted toward the torch head 3 after rotation, and the two fixing blocks 52 are overlapped with each other after rotation.

[0038] By adopting the above technical solution, first, before the sheath 45 moves downward, the two top covers 46 will be butted, and the magnetic ball 54 inside the fixed block 52 above the top cover 46 will roll to the depth of the guide groove 53, and at this time, the two magnetic balls 54 will be attracted to each other. When the sheath 45 moves downward, the slider 56 inside the sheath 45 will slide in the slide groove 55 inside the torch head 3. At this time, the torch head 3 will lift the two top covers 46, so that the two top covers 46 start to rotate through the hinge. When the top cover 46 rotates a certain angle, the magnetic ball 54 inside the guide groove 53 will be pulled out from the guide groove 53. Roll from one side of the groove 53 to the other side and apply pressure to the fixing block 52 until the fixing block 52 is placed on top of the two support plates 51. At this time, the top cover 46 stops rotating and is located on both sides of the flare head 3. Since the two top covers 46 are lifted by the flare head 3, the magnet ball 54 inside the guide groove 53 will roll to the other side of the guide groove 53. At this time, the magnet ball 54 can be used as a counterweight to accelerate the rotation of the top cover 46, and finally supported by the support plate 51. The two top covers 46 are still in a tilted state, so that the top cover 46 automatically covers the top of the flare head 3 after the sleeve 45 descends.

[0039] Working principle: First, the check valve 2 delivers the gas to the inside of the ignition device body 1, and after it is discharged through the torch head 3, an electric spark can be generated through the high-voltage discharge rod 41 to ignite the gas. When the gas stops being delivered, the electric push rod 44 above the fixed plate 43 can be started to lift the sheath 45, so that the sheath 45 wraps the torch head 3, and the two top covers 46 will directly cover the upper side of the torch head 3. As the sheath 45 gradually moves upward, the high-voltage discharge rod 41 fixed to the sheath 45 will also move upward, and drive the igniter 42 above the high-voltage discharge rod 41 to gradually approach the top cover 46, and the sheath 45 moves downward. Before, the two top covers 46 are locked by mutual attraction through the magnetic balls 54 inside the guide grooves 53. When the sleeve 45 moves downward, the slider 56 inside the sleeve 45 will slide in the slide groove 55 inside the torch head 3. At this time, the torch head 3 will lift the two top covers 46, so that the two top covers 46 start to rotate through the hinges. When the top covers 46 rotate a certain angle, the magnetic balls 54 inside the guide grooves 53 will roll from one side of the guide grooves 53 to the other side and apply pressure to the fixed blocks 52 until the fixed blocks 52 are placed on top of the two support plates 51. At this time, the top covers 46 stop rotating and are on both sides of the torch head 3.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A plasma uninterrupted ignition system for oil well control, comprising an ignition device body (1) and a check valve (2) arranged at the bottom end of the ignition device body (1), a flare head (3) being fixedly connected to the top end of the ignition device body (1), characterized in that: The outer side of the ignition device body (1) and the outer side of the torch head (3) are provided with a wind and sand prevention component (4), and the wind and sand prevention component (4) includes a high-voltage discharge rod (41) slidably connected to the inside of the torch head (3), and the high-voltage discharge rod (41) passes through the torch head (3); The top of the torch head (3) is fixedly connected to an igniter (42), and the outer side of the ignition device body (1) is fixedly connected to two fixing plates (43), and the upper sides of the two fixing plates (43) are fixedly connected to electric push rods (44), and the tops of the two electric push rods (44) are fixedly connected to the same sleeve (45), and the sleeve (45) is sleeved on the outer side of the torch head (3). The upper side of the sleeve (45) is hinged with two top covers (46) through hinges, and the two top covers (46) are overlapped on the upper side of the same torch head (3).

2. The plasma uninterrupted ignition system for oil well control according to claim 1 is characterized in that: The shape of the torch head (3) matches the shape of the inner cavity of the sheath (45), and the two top covers (46) match the shape of the sheath (45) after contact.

3. The plasma uninterrupted ignition system for oil well control according to claim 1 is characterized in that: The outer side of the protective sleeve (45) and the surface of the top cover (46) are jointly provided with a support component (5), and the support component (5) comprises two support plates (51) fixedly connected to the outer side of the protective sleeve (45), and the two support plates (51) are both arranged to be inclined upward, and the inclination directions of the two support plates (51) are opposite.

4. The plasma uninterrupted ignition system for oil well control according to claim 1 is characterized in that: A fixing block (52) is fixedly connected to one side of the two top covers (46) that are away from each other. The two top covers (46) are inclined toward one side of the flare head (3) and overlap with the outer side of the flare head (3).

5. The plasma uninterrupted ignition system for oil well control according to claim 4 is characterized in that: The two fixing blocks (52) are each provided with a guide groove (53) inside, and the two guide grooves (53) are both inclined, and the fixing blocks (52) are trapezoidal.

6. The plasma uninterrupted ignition system for oil well control according to claim 5 is characterized in that: The guide grooves (53) are both slidably connected with magnetic balls (54), and the two magnetic balls (54) are magnetically attracted when they are close to each other.

7. The plasma uninterrupted ignition system for oil well control according to claim 1 is characterized by: Two slide grooves (55) are provided on the outer side of the torch head (3), and two sliding blocks (56) are fixedly connected to the inner wall of the sleeve (45), and the two sliding blocks (56) are slidably connected in the two slide grooves (55) respectively.

8. The plasma uninterrupted ignition system for oil well control according to claim 6 is characterized by: The two guide grooves (53) are tilted toward the torch head (3) after rotation, and the two fixing blocks (52) overlap each other after rotation.

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