An LNG closed - type ground flare emission device

Abstract

This application provides an LNG closed - type ground flare emission device. By setting multiple gas tanks and a gas tank drive mechanism, emission gases of different properties can be introduced into different gas tanks for storage and then burned sequentially, avoiding safety accidents caused by the reaction of different emission gases mixing or the situation of incomplete combustion.

Description

Technical Field

[0001] The present invention relates to the field of ground flare emissions, and in particular to an LNG closed ground flare emission device. Background Art

[0002] LNG closed ground flares are mainly used for incinerating combustible gases such as biogas, combustible waste gas, and harmful waste gas. The exhaust gases from various emission devices are aggregated into a gas tank, enter the flare head through a flame arrester, and are burned in the flare head, thereby reducing the environmental pollution caused by these gases. Currently, they are widely used in industries such as petroleum and chemical industries; the flare generally consists of a gas transmission system, a tower body, a burner, an automatic controller, an emission device, etc.

[0003] When setting up the emission device of the LNG closed ground flare, it should be judged according to the chemical properties of the emitted materials. The exhaust gases that react with each other should be stored separately, and the corrosive and non-corrosive exhaust gases should be stored separately; it should be judged according to the physical properties of the emitted materials. The exhaust gases with liquid and without liquid should be stored separately, etc.; however, if the existing emission device is to discharge separately, the equipment cost is extremely high, and it is not easy to accurately control to ensure the sequential gas supply of multiple gas tanks. Therefore, there is an urgent need for an LNG closed ground flare emission device with low cost and precise control at present. Summary of the Invention

[0004] The purpose of the present invention is to provide an LNG closed ground flare emission device to solve the problems mentioned in the above background art.

[0005] To solve the above problems, the present invention provides an LNG closed ground flare emission device, including a gas tank and a transmission mechanism. A support plate is provided at the top of the gas tank, and a fixed gear is rotatably installed on the support plate. A plurality of gas tanks are circumferentially arranged around the transmission mechanism; the transmission mechanism includes an eccentric gear and a rotating plate. The rotating plate is rotatably installed on the support plate, the eccentric gear is rotatably installed on the rotating plate and is eccentrically arranged, the eccentric gear can be meshed with the fixed gear, and the eccentric gear is driven by a motor; a gear disk is also fixedly installed on the support plate, the gear disk covers the upper part of the eccentric gear, internal teeth are provided on the side wall of the gear disk, and the eccentric gear can be meshed with the internal teeth; a plurality of notches are circumferentially arranged on the side surface of the gear disk, and the fixed gear extends into the gear disk from the notches. When the eccentric gear is meshed with the fixed gear, it is disengaged from the internal teeth of the gear disk; an air inlet pipe and an exhaust pipe are provided at the bottom of the gas tank, and a piston plate is also provided in the gas tank. The piston plate is slidably and sealedly arranged between the inner wall of the gas tank, and the piston plate can be controlled to slide up and down by the fixed gear.

[0006] Further, a motor is fixedly installed on the outer wall of the gas tank. A motor gear is fixedly installed on the output shaft of the motor. A connecting shaft is arranged on the lower surface of the eccentric gear. The connecting shaft passes through the rotating plate. A transmission gear is fixedly installed at the lower end of the connecting shaft. The transmission gear meshes with the motor gear.

[0007] Further, a groove is formed in the support plate below the fixed gear. An installation groove is formed in the rotating plate. A movable key is installed in the installation groove through a spring. The movable key can extend into the groove on the support plate.

[0008] Further, a threaded rod is fixedly installed at the center of the upper surface of the piston plate. A through hole is formed in the center of the fixed gear. Internal threads are provided in the through hole. The threaded rod passes through the through hole and is matched with the internal threads. A limiting component is arranged in the gas tank to prevent the piston plate and the threaded rod from rotating relative to the gas tank.

[0009] Further, the length of the threaded rod is greater than the height of the gas tank.

[0010] Further, the limiting component includes a limiting rod and a limiting groove. The limiting rod is vertically arranged on the inner wall of the gas tank. The limiting groove is formed at the edge of the piston plate. The limiting rod passes through the limiting groove.

[0011] Further, a plurality of limiting grooves are evenly distributed along the circumferential direction of the piston plate at the edge of the piston plate. A plurality of corresponding limiting rods are arranged on the inner wall of the gas tank.

[0012] Further, the exhaust pipe at the bottom of the gas tank is communicated with a supply pipeline. The supply pipeline is communicated with an LNG enclosed ground flare.

[0013] Further, a base is arranged at the lower end of the LNG enclosed ground flare. The supply pipeline is installed on the base.

[0014] The LNG enclosed ground flare emission device has the following beneficial effects:

[0015] 1) The LNG enclosed ground flare emission device is provided with a plurality of gas tanks near the supply pipeline, which can store the exhaust gases with different chemical properties and different physical properties separately, avoiding reactions between the exhaust gases, and improving the safety and practicability of the present application.

[0016] 2) The LNG enclosed ground flare emission device ensures that the gases in the plurality of gas tanks can be discharged in sequence through the cooperation of the eccentric gear and the fixed gear, preventing simultaneous discharge that may lead to incomplete combustion of the flare or unqualified combustion results, and further improving the practicability of the present application. Brief Description of the Drawings

[0017] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0018] Figure 2 It is a schematic diagram of the structure of the discharge device of an embodiment of the present invention;

[0019] Figure 3 For the embodiment of the present invention Figure 2 Local enlarged view at A;

[0020] Figure 4 It is a schematic top view of the three-dimensional structure of the transmission mechanism of an embodiment of the present invention;

[0021] Figure 5 It is a schematic bottom view of the three-dimensional structure of the transmission mechanism of an embodiment of the present invention.

[0022] In the figure: 1, enclosed ground flare; 11, base; 12, gas supply pipe; 13, exhaust pipe; 14, intake pipe; 2, gas tank; 21, support plate; 3, threaded rod; 31, fixed gear; 32, limiting rod; 33, piston plate; 34, internal thread; 4, gear disk; 41, eccentric gear; 42, transmission gear; 43, rotating plate; 44, movable key; 45, motor gear; 46, motor; 47, internal teeth. Detailed Description of the Invention

[0023] The present invention will be described in detail below with reference to the drawings and in conjunction with embodiments. It should be noted that, without conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0024] As Figures 1 to 5In an embodiment of an LNG enclosed ground flare 1 emission device of the present invention shown, it includes a gas tank 2 and a transmission mechanism. A support plate 21 is provided at the top of the gas tank 2, and a fixed gear 31 is rotatably installed on the support plate 21. A plurality of gas tanks 2 are circumferentially arranged around the transmission mechanism; the transmission mechanism includes an eccentric gear 41 and a rotating plate 43. The rotating plate 43 is rotatably installed on the support plate 21, and the eccentric gear 41 is rotatably installed on the rotating plate 43 and is eccentrically arranged. The eccentric gear 41 can be meshed with the fixed gear 31, and the eccentric gear 41 is driven by a motor 46; a gear disk 4 is also fixedly installed on the support plate 21. The gear disk 4 covers the upper part of the eccentric gear 41, and an internal tooth 47 is provided on the side wall of the gear disk 4. The eccentric gear 41 can be meshed with the internal tooth 47; a plurality of notches are circumferentially arranged on the side surface of the gear disk 4. The fixed gear 31 extends into the gear disk 4 from the notch. When the eccentric gear 41 is meshed with the fixed gear 31, it disengages from the internal tooth 47 of the gear disk 4; an intake pipe 14 and an exhaust pipe 13 are provided at the bottom of the gas tank 2, and a piston plate 33 is also provided in the gas tank 2. The piston plate 33 is slidably sealed between the inner wall of the gas tank 2, and the piston plate 33 can be controlled to slide up and down by the fixed gear 31.

[0025] Specifically, when using this LNG enclosed ground flare 1 emission device, connect the emission port of the device for emitting waste gas to the intake pipe 14 of the gas tank 2. Different types of waste gas are introduced into different gas tanks 2. During the subsequent process of introducing waste gas, start the motor 46. The motor 46 drives the eccentric gear 41 to rotate. The eccentric gear 41 meshes with the fixed gear 31 at the top of one gas tank 2, driving the fixed gear 31 to rotate. The fixed gear 31 drives the piston plate 33 to move upward, so that the waste gas begins to be accommodated below the piston plate 33 in the gas tank 2; after the piston plate 33 moves upward to the limit position, the fixed gear 31 cannot rotate, while the eccentric gear 41 continues to rotate driven by the motor 46. At this time, the eccentric gear 41 disengages from the immovable fixed gear 31 and instead meshes with the internal tooth 47 in the gear disk 4. Then the eccentric gear 41 rotates along the internal tooth 47 of the gear disk 4, driving the rotating plate 43 to rotate synchronously. After the eccentric gear 41 meshes with the next fixed gear 31, the eccentric gear 41 begins to continue driving the fixed gear 31 to rotate to inflate the next gas tank 2; after all the gas tanks 2 are filled, the motor 46 rotates in reverse, driving the fixed gear 31 to rotate in reverse through the eccentric gear 41, that is, the piston plate 33 in the gas tank 2 moves downward. Through the extrusion of the piston plate 33, the waste gas stored in the gas tank 2 is discharged from the exhaust pipe 13 into the LNG enclosed ground flare for the enclosed ground flare 1 to burn.

[0026] In the case of intermittent exhaust of the equipment discharging waste gas, the above-mentioned discharge device can fit the working frequency of the equipment discharging waste gas and work intermittently. When the equipment discharging waste gas is a device continuously outputting waste gas, the gear disk 4, its transmission mechanism and multiple gas tanks 2 are regarded as a group. Two groups of equipment can be set on the air supply pipeline 12 to make the two groups of equipment work alternately, ensuring that the continuously output waste gas can be completely collected and then sent to the LNG closed ground flare 1 for combustion; further, when the waste gas emission increases, multiple groups of equipment can be set on the air supply pipeline 12.

[0027] In an embodiment of the present application, preferably, a motor 46 is fixedly installed on the outer wall of the gas tank 2, a motor gear 45 is fixedly installed on the output shaft of the motor 46, a connecting shaft is arranged on the lower surface of the eccentric gear 41, the connecting shaft passes through the rotating plate 43, and a transmission gear 42 is fixedly installed at the lower end of the connecting shaft. The transmission gear 42 meshes with the motor gear 45; it is ensured that the transmission of the motor 46 is stable and reliable, and the eccentric gear 41 can be continuously and stably driven to rotate.

[0028] In an embodiment of the present application, preferably, a groove is opened on the support plate 21 below the fixed gear 31, an installation groove is opened on the rotating plate 43, and a movable key 44 is installed in the installation groove through a spring. The movable key 44 can extend into the groove on the support plate 21; specifically, when the eccentric gear 41 meshes with the fixed gear 31, the eccentric gear 41 rotates, which may drive the fixed gear 31 to rotate, or may cause the eccentric gear 41 itself to rotate along the internal teeth 47 of the gear disk 4, that is, drive the rotating plate 43 to rotate. At this time, the movable key 44 extends into the groove, restricting the rotation of the rotating plate 43, that is, restricting the rotation of the eccentric gear 41 along the internal teeth 47 of the gear disk 4, ensuring that the eccentric gear 41 can normally drive the fixed gear 31 to rotate. After the fixed gear 31 drives the threaded rod 3 to complete the operation and can no longer rotate, the eccentric gear 41 continues to rotate under the drive of the motor 46, squeezing the spring in the installation groove of the rotating plate 43, causing the movable key 44 to retract into the installation groove, and the rotating plate 43 is disengaged from the support plate 21. The eccentric gear 41 can continue to rotate along the internal teeth 47 of the gear disk 4 until it meshes with the next fixed gear 31, and the movable key 44 extends out again and is clamped in the groove corresponding to the next fixed gear 31, ensuring that the rotating plate 43 is fixed to the support plate 21 and enabling the eccentric gear 41 to operate normally..

[0029] In an embodiment of the present application, preferably, a threaded rod 3 is fixedly installed at the center of the upper surface of the piston plate 33, a through hole is opened at the center of the fixed gear 31, an internal thread 34 is arranged in the through hole, and the threaded rod 3 passes through the through hole and cooperates with the internal thread 34; a limiting component is arranged in the gas tank 2 to prevent the piston plate 33 and the threaded rod 3 from rotating relative to the gas tank 2; it is ensured that the fixed gear 31 can drive the threaded rod 3 to move up and down during rotation.

[0030] In one embodiment of the present application, preferably, the length of the threaded rod 3 is greater than the height of the gas tank 2; the length of the threaded rod 3 ensures the range of motion of the piston plate 33, so that the space in the gas tank 2 can be fully utilized.

[0031] In one embodiment of the present application, preferably, the limiting assembly includes a limiting rod 32 and a limiting groove, the limiting rod 32 is vertically arranged on the inner wall of the gas tank 2, the limiting groove is opened at the edge of the piston plate 33, and the limiting rod 32 passes through the limiting groove; the piston plate 33, the threaded rod 3 and the gas tank 2 are restricted from relative rotation, ensuring that the fixed gear 31 can normally drive the threaded rod 3 to move during the rotation process.

[0032] In one embodiment of the present application, preferably, a plurality of limit grooves are evenly distributed on the edge of the piston plate 33 along the circumference of the piston plate 33, and a plurality of limit rods 32 are correspondingly arranged on the inner wall of the gas tank 2; so that the force on the piston plate 33 is balanced, on the one hand, the reliability of the limit is improved, and on the other hand, it prevents the piston plate 33 from tilting due to uneven force, causing the exhaust gas below the piston plate 33 to penetrate to the top of the piston plate.

[0033] In one embodiment of the present application, preferably, the exhaust pipe 13 at the bottom of the gas tank 2 is connected to the gas supply pipeline 12, and the gas supply pipeline 12 is connected to the LNG closed ground flare 1; so that the gas in the gas tank 2 can pass into the gas supply pipeline 12, and then supply the LNG closed ground flare 1 for combustion.

[0034] In one embodiment of the present application, preferably, a base 11 is provided at the lower end of the LNG closed ground flare 1, and a gas supply pipe 12 is installed on the base 11. The LNG closed ground flare 1 is protected by the base 11 to prevent non-staff from contacting the LNG closed ground flare 1 and to prevent the heat emitted by the LNG closed ground flare 1 from burning the operator.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An LNG closed - type ground flare emission device, characterized in that: It includes a gas tank and a transmission mechanism. A support plate is provided at the top of the gas tank. A fixed gear is rotatably installed on the support plate. A plurality of gas tanks are circumferentially arranged around the transmission mechanism. The transmission mechanism includes an eccentric gear and a rotating plate. The rotating plate is rotatably installed on the support plate. The eccentric gear is rotatably installed on the rotating plate and is eccentrically arranged. The eccentric gear can be meshed with the fixed gear. The eccentric gear is driven by a motor. A gear disk is also fixedly installed on the support plate. The gear disk covers the upper part of the eccentric gear. Internal teeth are provided on the side wall of the gear disk. The eccentric gear can be meshed with the internal teeth. A plurality of notches are circumferentially arranged on the side surface of the gear disk. The fixed gear extends into the gear disk from the notches. When the eccentric gear is meshed with the fixed gear, it disengages from the internal teeth of the gear disk. An air inlet pipe and an exhaust pipe are provided at the bottom of the gas tank. A piston plate is also provided inside the gas tank. The piston plate is slidably and sealingly arranged between the inner wall of the gas tank. The piston plate can be controlled to slide up and down by the fixed gear. A threaded rod is fixedly installed at the center of the upper surface of the piston plate. A through hole is provided at the center of the fixed gear. Internal threads are provided in the through hole. The threaded rod passes through the through hole and is matched with the internal threads. A limiting component is provided inside the gas tank to prevent the piston plate and the threaded rod from rotating relative to the gas tank. The length of the threaded rod is greater than the height of the gas tank.

2. The LNG closed - type ground flare emission device according to claim 1, wherein: A motor is fixedly installed on the outer wall of the gas tank. A motor gear is fixedly installed on the output shaft of the motor. A connecting shaft is provided on the lower surface of the eccentric gear. The connecting shaft passes through the rotating plate. A transmission gear is fixedly installed at the lower end of the connecting shaft. The transmission gear is meshed with the motor gear.

3. The LNG closed ground flare emission device according to claim 1, characterized in that: A groove is provided on the support plate below the fixed gear. An installation groove is provided on the rotating plate. A movable key is installed in the installation groove through a spring. The movable key can extend into the groove on the support plate.

4. The LNG closed ground flare emission device according to claim 1, wherein: The limiting component includes a limiting rod and a limiting groove. The limiting rod is vertically arranged on the inner wall of the gas tank. The limiting groove is provided at the edge of the piston plate. The limiting rod passes through the limiting groove.

5. The LNG closed ground flare emission device according to claim 4, wherein: A plurality of the limiting grooves are circumferentially arranged at the edge of the piston plate along the circumference of the piston plate. A plurality of corresponding limiting rods are provided on the inner wall of the gas tank.

6. The LNG closed - type ground flare emission device according to claim 1, characterized in that: The exhaust pipe at the bottom of the gas tank is communicated with a supply pipeline. The supply pipeline is communicated with an LNG enclosed ground flare.

7. The LNG closed ground flare emission device according to claim 6, wherein: A base is provided at the lower end of the LNG enclosed ground flare. The supply pipeline is installed on the base.

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