Anti-explosion water seal device of fixed bed gasifier

Abstract

The utility model relates to an anti-explosion water seal device of a fixed bed gasifier, which belongs to the technical field of fixed bed gasifiers and comprises a plurality of pressure relief pipes and a plurality of water seal cylinders, one end of each pressure relief pipe is connected with the side wall of the upper portion of the gasifier, the other end of each pressure relief pipe extends into the corresponding water seal cylinder, and liquid is arranged in the water seal cylinders. The liquid level of the liquid is higher than the end, away from the gasification furnace, of the pressure relief pipe in the vertical direction, the side wall of the water seal cylinder is connected and communicated with a water inlet pipe and an overflow pipe, and the overflow pipe is located below the water inlet pipe in the vertical direction. Every two adjacent water seal barrels are connected and communicated through a communicating pipe, the communicating pipes are located below the overflow pipes in the vertical direction, so that the heights of liquid in the water seal barrels are kept consistent, and the water seal barrels are further connected and communicated with blow-off pipes used for discharging impurities in the water seal barrels. The explosion-proof pressure relief device has the effect of reducing the manufacturing and maintenance cost of the explosion-proof pressure relief device.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of fixed bed gasification furnace, especially to a fixed bed gasification furnace explosion-proof water seal device. BACKGROUND

[0002] The fixed bed gasification furnace is a device for gasifying biomass raw materials such as rice hulls, wood chips and particles at high temperature to decompose gas fuel, which generally includes a bed layer, a feeding device, a heating element, an exhaust system and other parts.

[0003] The fixed bed gasification furnace usually has two left and right explosion doors as pressure relief devices. The explosion doors can effectively release the high pressure in the furnace. When the gas pressure in the furnace instantaneously increases (for example, a sudden explosion phenomenon), the explosion doors not only ensure the safety of the workers, but also protect the fixed bed gasification furnace body and the surrounding industrial equipment from the damage of explosion shock waves.

[0004] However, in actual use, it is found that the explosion doors are generally made of special materials and manufacturing processes, which have the defect of high manufacturing and maintenance costs. INVENTION CONTENTS

[0005] In order to reduce the manufacturing and maintenance costs of the explosion relief device, the application provides a fixed bed gasification furnace explosion-proof water seal device.

[0006] The fixed bed gasification furnace explosion-proof water seal device provided by the application adopts the following technical scheme:

[0007] A fixed bed gasification furnace explosion-proof water seal device includes a plurality of pressure relief pipes and a plurality of water seal tubes. One end of the pressure relief pipe is connected to the side wall of the upper part of the gasification furnace. The pressure relief pipe is in communication with the cavity inside the gasification furnace. The other end of the pressure relief pipe extends into the water seal tube. The water seal tube contains a liquid. The liquid level of the liquid is higher than the end of the pressure relief pipe away from the gasification furnace in the vertical direction.

[0008] By adopting the above technical scheme, the liquid in the water seal tube not only has a sealing effect, but also can effectively relieve pressure when the pressure in the gasification furnace instantaneously increases. The device has the advantages of simple structure, easy installation, and safety and reliability in use, which effectively reduces the manufacturing and maintenance costs of the explosion relief device.

[0009] Preferably, the side wall of the water seal tube is connected and communicated with a water inlet pipe and an overflow pipe. The overflow pipe is located below the water inlet pipe in the vertical direction.

[0010] By adopting the above technical scheme, the liquid enters the water seal tube from the water inlet pipe, and the excess liquid in the water seal tube can be discharged through the overflow pipe, so that the liquid in the water seal tube is quantified.

[0011] Preferably, a communication pipe is arranged between two adjacent water seal cylinders, the communication pipe is connected with and communicates with the water seal cylinders, and the communication pipe is located below the overflow pipe in the vertical direction.

[0012] By adopting the above technical scheme, the liquid levels in the eight water seal cylinders are kept flat by the communication pipe, and the amount of liquid in the water seal cylinders is convenient to adjust.

[0013] Preferably, a sewage pipe is arranged at the bottom of the water seal cylinder, and the sewage pipe is connected with and communicates with the water seal cylinder.

[0014] By adopting the above technical scheme, the impurities in the water seal cylinder are conveniently discharged through the sewage pipe, and the service life of the device is prolonged.

[0015] Preferably, a sealing block is arranged on the sewage pipe, the sealing block is slidingly arranged in the sewage pipe, the opening and closing of the sewage pipe to the outside can be controlled by the sliding of the sealing block, one end of the sealing block towards the water seal cylinder is provided with a connecting block, an inner wall of the water seal cylinder is provided with a placing portion, a sliding hole for sliding of the connecting block is arranged on the placing portion, a limiting block is arranged at an end of the connecting block away from the sealing block, a sealing elastic element is arranged between the limiting block and the placing portion, and the sealing elastic element is used to drive the limiting block to slide to the sealing block in the sewage pipe.

[0016] By adopting the above technical scheme, the opening and closing of the sewage pipe to the outside can be controlled by the sliding of the sealing block, the liquid in the water seal cylinder is effectively reduced in the standing process, the liquid loss is reduced, and the use cost is reduced; when part of the gas in the gasification furnace is discharged from the pressure relief pipe and enters the water seal cylinder, the impact force pushes the limiting block to slide towards the placing portion to remove the sealing of the sealing block to the sewage pipe, at this time, the sewage and impurities in the water seal cylinder can be discharged from the water seal cylinder through the sewage pipe; after the impact force disappears, the limiting block can slide to the sealing block in the sewage pipe under the action of the sealing spring, the sealing block is convenient to reset, the opening and closing of the sewage pipe is controlled by the impact force caused by the explosion in the furnace, and the timing of the opening and closing of the sewage pipe is convenient to control.

[0017] Preferably, a sealing ring is embedded on the sealing block, and the sealing ring is abutted against the inner wall of the sewage pipe.

[0018] By adopting the above technical scheme, the sealing property between the sealing block and the sewage pipe is improved by the arrangement of the sealing ring, and the liquid in the water seal cylinder is further reduced in the standing process.

[0019] Preferably, the inner diameter of the sealing block close to the connecting block gradually increases in the direction towards the sealing ring.

[0020] By adopting the technical scheme, a water guide slope surface is formed on the sealing block, so that impurity dust is not easy to accumulate on the sealing block, and then the wastewater containing impurity dust can be conveniently discharged.

[0021] In summary, the present application includes at least one of the following beneficial technical effects:

[0022] 1. The liquid in the water seal cylinder has a sealing effect and can effectively release pressure when the pressure in the gasification furnace instantaneously increases, and the device has the advantages of simple structure, easy installation, not easy to damage during use, safety and reliability, and effectively reduces the manufacturing and maintenance cost of the explosion-proof pressure relief device.

[0023] 2. By providing the overflow pipe, the excess liquid in the water seal cylinder can be discharged, so that the liquid in the water seal cylinder is quantified, and by providing the communication pipe, the liquid level in the eight water seal cylinders can be kept flat. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a schematic diagram of the overall structure of the embodiment of the present application.

[0025] Figure 2 is a top view of the embodiment of the present application.

[0026] Figure 3 is a side view detail drawing of the embodiment of the present application.

[0027] Figure 4 is a detail drawing of the explosion-proof water seal device of the embodiment of the present application.

[0028] Figure 5 is Figure 4 A enlarged view of part A in

[0029] Reference signs: 1, pressure relief pipe; 2, water seal cylinder; 21, water inlet pipe; 22, overflow pipe; 23, communication pipe; 24, blowdown pipe; 3, gasification furnace; 4, sealing block; 41, connecting block; 411, limiting block; 42, placing part; 43, sealing spring; 44, sealing ring. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings Figures 1-5 The present application will be further described in detail.

[0031] The embodiment of the present application discloses a fixed bed gasification furnace explosion-proof water seal device, referring to Figure 1 and Figure 2, including a plurality of pressure relief pipes 1 and a plurality of water seal tubes 2, in the embodiment of the application, the number of pressure relief pipes 1 and water seal tubes 2 is eight, the pressure relief pipe 1 corresponds to the water seal tube 2, eight pressure relief pipes 1 are divided into four groups, four groups of pressure relief pipes 1 are arranged in a circular array with the axis of the gasifier 3 as the center, two pressure relief pipes 1 in the same group are spaced twenty degrees apart, one end of the pressure relief pipe 1 is fixed with the upper side wall of the gasifier 3 by welding, so that the pressure relief pipe 1 communicates with the cavity inside the gasifier 3, the other end of the pressure relief pipe 1 extends into the water seal tube 2, so that the water seal tube 2 is sleeved on the pressure relief pipe 1 and the water seal tube 2 is coaxially arranged with the pressure relief pipe 1.

[0032] The water seal tube 2 is fixed with the furnace body of the gasifier 3, the fixing mode of the water seal tube 2 and the gasifier 3 is not shown in the drawings of the embodiment of the application, a support part can be welded and fixed on the furnace body of the gasifier 3, a support through hole for the water seal tube 2 to pass through is provided on the support part, a fixed part is welded and fixed on the outer wall of the water seal tube 2, the fixed part is attached to one end of the support part facing the ground, and the fixed part and the support part are fixed by bolts, so that the water seal tube 2 and the furnace body of the gasifier 3 are detachably connected, facilitating the cleaning of the impurities blocked in the water seal tube 2 later.

[0033] The water seal tube 2 is provided with a liquid, so that the liquid level of the liquid is higher than one end of the pressure relief pipe 1 away from the gasifier 3 in the vertical direction, in the embodiment of the application, water can be selected as the liquid, the water in the water seal tube 2 is sealed, when the pressure in the gasifier 3 instantaneously increases, part of the gas in the gasifier 3 will be discharged from the gasifier 3 through the pressure relief pipe 1 and enter the water seal tube 2, the water in the water seal tube 2 absorbs the impact force generated by the explosion in the furnace, so as to achieve the effect of effective pressure relief.

[0034] Through the cooperation of the pressure relief pipe 1 and the water seal tube 2, the sealing and pressure relief effects are achieved, the device not only has simple structure and is easy to install, but also is not easy to damage, safe and reliable in use process, effectively reducing the manufacturing and maintenance cost of the explosion-proof pressure relief device.

[0035] Referring to Figure 2 , Figure 3 and Figure 4The side wall of the water seal cylinder 2 is welded with a water inlet pipe 21 and an overflow pipe 22, both of which are communicated with the water seal cylinder 2, and the overflow pipe 22 is located below the water inlet pipe 21 in the vertical direction. Water enters the water seal cylinder 2 from the water inlet pipe 21, and the overflow pipe 22 can discharge excess water in the water seal cylinder 2, so that the water in the water seal cylinder 2 is quantified. A communication pipe 23 is arranged between two adjacent water seal cylinders 2, and the communication pipe 23 is fixed and communicated with the water seal cylinder 2. The communication pipe 23 is located below the overflow pipe 22 in the vertical direction. Through the arrangement of the communication pipe 23, the liquid level in the eight water seal cylinders 2 is kept flat. Therefore, only one water inlet pipe 21 needs to be arranged on one of the water seal cylinders 2, and the other water seal cylinder 2 is provided with an overflow pipe 22. It should be noted that, in order to show the positional relationship between the water inlet pipe 21, the overflow pipe 22 and the communication pipe 23, Figure 4 The water inlet pipe 21 and the overflow pipe 22 are arranged on the same water seal cylinder 2 in the above embodiment.

[0036] Referring to Figure 3 and Figure 4 , the bottom of the water seal cylinder 2 is welded with a blowdown pipe 24, which is communicated with the water seal cylinder 2. The gas discharged from the gasification furnace 3 through the pressure relief pipe 1 may carry impurities and dust in the furnace. These impurities and dust will deposit at the bottom of the water seal cylinder 2. Through the arrangement of the blowdown pipe 24, the impurities in the water seal cylinder 2 can be easily discharged, prolonging the service life of the device. A recovery bucket can be placed below the blowdown pipe 24 to collect the wastewater discharged from the water seal cylinder 2.

[0037] Referring to Figure 4 and Figure 5 , the blowdown pipe 24 is provided with a closing block 4 which is slidably arranged in the blowdown pipe 24. The closing block 4 slides along the length direction of the blowdown pipe 24. The sliding of the closing block 4 can control the opening and closing of the blowdown pipe 24 with the outside, effectively reducing the water flowing out of the water seal cylinder 2 through the blowdown pipe 24 during the standing process, reducing the water loss, thereby reducing the use cost.

[0038] Referring to Figure 5 , one end of the closing block 4 facing the water seal cylinder 2 is fixedly connected with a connecting block 41, and the inner wall of the water seal cylinder 2 is provided with a placing portion 42, and a sliding through hole for sliding of the connecting block 41 is formed in the placing portion 42. The sliding through hole cooperates with the connecting block 41 to control the sliding direction of the closing block 4 and improve the stability of the sliding of the closing block 4. In addition, a plurality of water leakage through holes can be formed in the placing portion 42 to support the closing block 4 while reducing the influence of the placing portion 42 on the water flow. The end of the connecting block 41 away from the closing block 4 is provided with a limiting block 411, and the size of the limiting block 411 is greater than that of the sliding through hole. Through the arrangement of the limiting block 411, the closing block 4 is not easy to slide out of the water seal cylinder 2.

[0039] Referring to Figure 5The sealing elastic member is selected as a sealing spring 43 in the embodiment of the application, the sealing spring 43 is sleeved on the connecting block 41, one end of the sealing spring 43 abuts against the limiting block 411, and the other end of the sealing spring 43 abuts against the placing portion 42, and through the arrangement of the sealing spring 43, the limiting block 411 can be driven to slide to the position that the closing block 4 is located in the blowdown pipe 24.

[0040] In actual application, the water seal cylinder 2 is provided with a hydraulic sensor, and a water supply device is further arranged on the water seal cylinder 2, the water supply device injects water into the water seal cylinder 2 through the water inlet pipe 21, and the hydraulic sensor can cooperate with the water supply device to inject water into the water seal cylinder 2 when the hydraulic sensor senses that the hydraulic pressure in the water seal cylinder 2 is insufficient.

[0041] When part of the gas in the gasification furnace 3 is discharged from the gasification furnace 3 through the pressure relief pipe 1 and enters the water seal cylinder 2, the impact force drives the limiting block 411 to slide towards the placing portion 42 to the position that the closing block 4 is located in the blowdown pipe 24, at which time the sewage and impurities in the water seal cylinder 2 can be discharged from the water seal cylinder 2 through the blowdown pipe 24; after the impact force disappears, the limiting block 411 can slide to the position that the closing block 4 is located in the blowdown pipe 24 under the action of the sealing spring 43, and in this process, the water supply device can inject water into the water seal cylinder 2 through the water inlet pipe 21, on the one hand to supplement the water in the water seal cylinder 2, and on the other hand to flush the closing block 4 through the supplemented water, so that dust and impurities are not easy to accumulate on the closing block 4, effectively reducing the wear of the closing block 4 and the blowdown pipe 24. The impact force caused by the explosion in the furnace controls the opening and closing of the blowdown pipe 24, which facilitates the control of the timing of the opening and closing of the blowdown pipe 24.

[0042] Reference Figure 5 The closing block 4 is embedded with a sealing ring 44, the sealing ring 44 abuts against the inner wall of the blowdown pipe 24, through the arrangement of the sealing ring 44, the sealing property between the closing block 4 and the blowdown pipe 24 is improved, and the water flowing out of the water seal cylinder 2 through the blowdown pipe 24 in the standing process is further reduced; the inner diameter of the closing block 4 close to the connecting block 41 increases in turn in the direction towards the sealing ring 44, thereby forming a water guide slope, so that impurities and dust are not easy to accumulate on the closing block 4, and then the wastewater containing impurities and dust is conveniently discharged.

[0043] The above are preferred embodiments of the application, which do not limit the protection scope of the application, therefore: any equivalent changes made on the structure, shape and principle of the application should be covered within the protection scope of the application.

Claims

1. A fixed bed gasifier explosion-proof water seal device, characterized in that, The utility model relates to a gasification furnace pressure relief device, including a plurality of pressure relief pipe (1) and a plurality of water seal cylinder (2), one end of pressure relief pipe (1) is connected with the lateral wall of gasification furnace (3) upper portion, pressure relief pipe (1) is communicated with the cavity in gasification furnace (3) inside, the other end of pressure relief pipe (1) extends to water seal cylinder (2) inside, water seal cylinder (2) is built-in liquid, the liquid level of liquid is higher than the one end of pressure relief pipe (1) away from gasification furnace (3) in vertical direction; The lateral wall of water seal cylinder (2) is connected with and communicated with water inlet pipe (21) and overflow pipe (22), and the overflow pipe (22) is located below the water inlet pipe (21) in the vertical direction; The bottom of water seal cylinder (2) is provided with a blow-off pipe (24), and the blow-off pipe (24) is connected with and communicated with the water seal cylinder (2); The blow-off pipe (24) is provided with a sealing block (4), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), the sealing block (4) is slidingly arranged in the blow-off pipe (24), 2. The fixed bed gasification furnace explosion-proof water seal apparatus according to claim 1, characterized by, ​ 3. The fixed bed gasification furnace explosion-proof water seal apparatus according to claim 1, characterized by, ​ 4. The fixed bed gasification furnace explosion-proof water seal apparatus according to claim 1, characterized by, ​

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