Float-type leakproof device and gas drainer

Abstract

The utility model belongs to the technical field of gas drainers, and particularly relates to a float-type leakproof device and a gas drainer. The top of the cylinder is provided with an inlet, and the bottom of the cylinder is provided with an outlet; the fixed cylinder is arranged in the inner cavity of the cylinder body and fixedly connected with the inner wall surface of the cylinder body, and the fixed cylinder is of a through structure with openings in the two ends; the sealing gasket is arranged at the outlet end of the cylinder body and is used for blocking the outlet of the cylinder body; the sealing gasket is made of a nylon material, and a communicating hole is formed in the middle of the sealing gasket; the float bowl is slidably mounted in the inner cavity of the fixed barrel, and a sealing ball is arranged at the bottom of the float bowl; wherein the buoy is provided with a plugging position and a floating position; when the buoy slides to a plugging position under the action of gravity, the sealing ball at the bottom of the buoy abuts against the communicating hole of the sealing gasket, and a sealing state is formed. When the buoy floats to a floating position under the action of buoyancy, the sealing ball is separated from the communicating hole, and the communicating hole is communicated with the inner cavity of the barrel body to realize drainage.

Description

TECHNICAL FIELD

[0001] The utility model belongs to coal gas drainer technical field especially relates to a kind of float type anti-leakage device and coal gas drainer. BACKGROUND

[0002] In the alumina production process, the coal gas produced by the furnace is widely used as calcination fuel. However, due to the influence of external temperature, a large amount of water will accumulate in the coal gas conveying pipeline. If these accumulated water is not discharged in time, it is likely to block the coal gas, causing system pressure fluctuation, and even leading to unplanned shutdown of the calcination furnace, seriously affecting the stability and continuity of alumina production.

[0003] To solve this problem, high-pressure coal gas pipelines are usually equipped with water traps to periodically remove accumulated water. However, the current water traps have significant defects. For example, the sealing pad under the large float of the water trap is made of silicone rubber, which will be corroded by phenolic water in the coal gas during long-term use. Phenolic water has complex composition and strong corrosive properties, making the sealing pad prone to damage. Once the sealing pad is damaged, the phenolic water overflow channel will be blocked, often resulting in no overflow, and there will be accumulated water at the detection port, ultimately leading to the failure of normal discharge of accumulated water in the high-pressure coal gas pipeline.

[0004] This situation not only affects the normal functioning of the water trap itself, but also poses a great threat to the stable operation of the entire coal gas system. The frequent problem of poor drainage requires operators to frequently inspect and maintain the water trap, greatly reducing the efficiency of maintenance work and increasing labor and time costs. Moreover, the risk of water leakage caused by corrosion of the sealing pad also poses a potential threat to the safety of the production environment.

[0005] Based on this, a new type of float type anti-leakage device and coal gas drainer is provided in the utility model to overcome the above-mentioned defects. CONTENT OF THE UTILITY MODEL

[0006] One purpose of the utility model is to provide a float type anti-leakage device, which uses nylon material for the sealing pad. Nylon has good wear resistance, corrosion resistance and certain elasticity, prolonging the service life of the sealing pad and thereby improving the service life of the entire device. At the same time, it can also enhance the anti-leakage performance.

[0007] The utility model adopts the following technical solution: a float type anti-leakage device, comprising:

[0008] A cylinder body is provided with an inlet at the top and an outlet at the bottom;

[0009] A fixed cylinder is arranged in the inner cavity of the cylinder body and fixedly connected with the inner wall surface of the cylinder body, and the fixed cylinder has a through structure with open ends;

[0010] A sealing gasket is arranged at the outlet end of the barrel body to seal the outlet of the barrel body; the sealing gasket is made of nylon material, and a communication hole is arranged in the middle of the sealing gasket;

[0011] A float is slidably arranged in the inner cavity of the fixed barrel, and a sealing ball is arranged at the bottom of the float;

[0012] The float has a sealing position and a floating position;

[0013] When the float slides to the sealing position under the action of gravity, the sealing ball at the bottom of the float abuts against the communication hole of the sealing gasket to form a sealing state;

[0014] When the float floats to the floating position under the action of buoyancy, the sealing ball is separated from the communication hole, and the communication hole is communicated with the inner cavity of the barrel body to realize water drainage.

[0015] Further, one of the inner wall of the fixed barrel and the outer wall of the float is provided with a connecting groove, and the other is provided with a connecting protrusion matched with the connecting groove.

[0016] Further, the connecting groove and the connecting protrusion are both in the shape of a long strip and are arranged along the axial direction of the fixed barrel or the float.

[0017] Further, the connecting groove and the connecting protrusion are both arranged in multiple and are arranged equidistantly along the circumferential direction of the fixed barrel or the float.

[0018] Further, the float type leakage prevention device further comprises:

[0019] A flow guide barrel is arranged between the barrel body and the fixed barrel; the outer wall of the flow guide barrel is attached to the inner wall of the barrel body, and the inner wall of the flow guide barrel is fixedly connected with the outer wall of the fixed barrel.

[0020] Further, the bottom of the flow guide barrel is in the shape of a funnel, and the small end of the flow guide barrel abuts against the sealing gasket.

[0021] Further, the float type leakage prevention device further comprises:

[0022] A drain pipe is arranged below the sealing gasket and is communicated with the communication hole in the middle of the sealing gasket; the drain pipe is in the shape of a funnel.

[0023] Further, the side wall of the top of the barrel body is provided with an overflow port.

[0024] Further, the bottom of the barrel body is provided with a cleaning hole, and a cleaning cover is arranged at the cleaning hole;

[0025] And / or, the side wall of the barrel is provided with a transparent visual observation window.

[0026] Compared with the prior art, the utility model has the advantages of:

[0027] The floating cylinder type leakage prevention device can automatically switch between the plugging position and the floating position according to the change of the water level in the barrel, and realizes automatic drainage of the condensed water.

[0028] Meanwhile, when the device does not need to drain water, the tight abutment between the sealing ball and the communication hole of the nylon sealing gasket forms an effective sealing barrier, greatly improves the leakage prevention performance of the device, guarantees the safe operation of the gas system, and reduces the risk of safety accidents caused by gas leakage.

[0029] In addition, the sealing gasket is made of nylon, which has good wear resistance, corrosion resistance and elasticity.

[0030] Another purpose of the utility model is to provide a gas water drainer, which comprises the floating cylinder type leakage prevention device. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed in the embodiment or the prior art description will be briefly introduced as follows.

[0032] Figure 1 It is a structural schematic view of the floating cylinder type leakage prevention device in the embodiment of the utility model.

[0033] Figure 2 It is a structural schematic view of the floating cylinder type leakage prevention device in the embodiment of the utility model. Figure 1 It is a structural schematic view of the floating cylinder type leakage prevention device in the embodiment of the utility model.

[0034] Wherein: barrel 1, inlet 10, outlet 11; fixed cylinder 2; sealing gasket 3, communication hole 30; floating cylinder 4, sealing ball 40, connecting groove 41; flow guide cylinder 5; support 6; drain pipe 7. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative work belong to the protection scope of the utility model.

[0036] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative work belong to the protection scope of the utility model. Figure 1 The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative work belong to the protection scope of the utility model. Figure 2 And the specific embodiments, the utility model is discussed in detail:

[0037] As Figures 1-2 The utility model provides a kind of buoy type leakage prevention device, it includes:

[0038] Cylinder 1, the top of the cylinder 1 is equipped with inlet 10, bottom is equipped with outlet 11;

[0039] Fixed cylinder 2, the fixed cylinder 2 is arranged in the inner cavity of the cylinder 1, with the inner wall surface of the cylinder 1 fixed connection, the fixed cylinder 2 is the through structure of two ends opening;

[0040] Sealing pad 3, the sealing pad 3 is arranged in the outlet end of the cylinder 1, for plugging the outlet of the cylinder 1;The sealing pad 3 is made of nylon material, and the middle of the sealing pad 3 is equipped with communicating hole 30;

[0041] Buoy 4, the buoy 4 is slidably installed in the inner cavity of the fixed cylinder 2, and the bottom of the buoy 4 is provided with sealing ball 40;

[0042] Among them, the buoy 4 has plugging position and floating position;

[0043] When the buoy 4 slides to the plugging position under the action of gravity, the sealing ball 40 at the bottom of the buoy 4 is abutted at the communicating hole 30 of sealing pad 3, forms sealed state, avoids that coal gas produces leakage;

[0044] When the buoy 4 is floated to floating position under the action of buoyancy, the sealing ball 40 is separated from the communicating hole 30, the communicating hole 30 is communicated with the inner cavity of the cylinder 1, to realize drainage function.

[0045] Condensate water in coal gas is entered into the inner cavity of the cylinder 1 through the inlet 10 at the top of the cylinder 1. At this time, the device starts to enter working condition, needs to handle coal gas and condensate water, prevents coal gas from leaking and timely discharges condensate water.

[0046] In the initial stage or when the water level in the cylinder is low, the buoyancy of the float 4 is not enough to overcome its own gravity, and the float 4 slides to the sealing position under the action of gravity. In this position, the sealing ball 40 at the bottom of the float 4 tightly abuts the communication hole 30 of the sealing pad 3. Since the sealing pad 3 is made of nylon material, it has a certain elasticity and sealing property, and a good sealing state is formed between the sealing ball 40 and the communication hole 30, thereby effectively preventing the leakage of coal gas from the outlet 11 at the bottom of the cylinder 1, ensuring the sealing property of the entire device in the non-draining state, and preventing safety hazards caused by coal gas leakage.

[0047] As the condensed water in the coal gas continuously enters the cylinder 1, the water level in the cylinder 1 gradually rises. When the water level rises to a certain extent, the buoyancy of the float 4 increases and exceeds its own gravity, and the float 4 begins to float to the floating position under the action of buoyancy. At this time, the sealing ball 40 at the bottom of the float 4 is separated from the communication hole 30, so that the communication hole 30 is communicated with the inner cavity of the cylinder 1. Then, the condensed water is discharged from the device through the communication hole 30 and the outlet 11 at the bottom of the cylinder 1 under the action of gravity, realizing the drainage function and avoiding the excessive accumulation of condensed water in the cylinder affecting the coal gas transportation.

[0048] In the utility model, the float 4 can automatically switch between the sealing position and the floating position according to the change of the water level in the cylinder 1, realizing the automatic drainage of the condensed water. Without manual intervention, the labor cost and the possibility of operation error are reduced, the timeliness and stability of drainage are improved, and the coal gas transportation efficiency is ensured to be not affected by excessive accumulation of condensed water in the coal gas pipeline.

[0049] At the same time, through the cooperation of the float 4 and the sealing pad 3, when the device does not need to drain, the tight abutment between the sealing ball 40 and the communication hole 30 of the nylon sealing pad 3 forms an effective sealing barrier, greatly improving the anti-leakage performance of the device, ensuring the safe operation of the coal gas system, and reducing the risk of safety accidents caused by coal gas leakage.

[0050] In addition, the sealing pad 3 is made of nylon material, and nylon has good wear resistance, corrosion resistance and elasticity. The good wear resistance and corrosion resistance ensure that the sealing pad 3 can still maintain good sealing performance even if it is eroded by impurities in the coal gas and condensed water during long-term use, prolonging the service life of the sealing pad 3 and further improving the service life of the entire device. The elasticity of nylon helps to form a better sealing effect between the sealing ball 40 and the communication hole 30, further enhancing the anti-leakage performance.

[0051] Furthermore, in some specific embodiments, one of the inner wall of the fixed cylinder 2 and the outer wall of the float 4 is provided with a connecting groove 41, and the other is provided with a connecting protrusion that mates with the connecting groove 41, thereby achieving a sliding connection between the two. In this embodiment, a connecting protrusion is provided on the inner wall of the fixed cylinder 2, and a connecting groove 41 is provided on the outer wall of the float 4, such as... Figure 2 As shown. The connection groove 41 and the connection protrusion cooperate to guide the sliding of the float 4 within the fixed cylinder 2. When the water level inside the cylinder 1 changes and the float 4 needs to switch between the blocking position and the floating position, the guiding structure ensures that the float 4 moves vertically up and down, preventing it from shifting, tilting, or getting stuck during movement. This makes the movement of the float 4 more stable and smooth, thereby ensuring that the device reliably achieves its drainage and leak-proof functions. In addition, during the movement of the float 4, the cooperation between the connection groove 41 and the connection protrusion helps maintain the stability of the float 4's posture, preventing the float 4 from rotating or shaking due to water flow impact or other external forces. This ensures that the sealing ball 40 at the bottom of the float 4 is always accurately aligned with the connecting hole 30 of the sealing gasket 3, forming a good sealing effect when sealing is required. This avoids the risk of gas leakage due to incomplete sealing caused by abnormal posture of the float 4.

[0052] Specifically, both the connecting groove 41 and the connecting protrusion are elongated and arranged along the axial direction of the fixed cylinder 2 or the float 4, providing precise axial guidance for the sliding of the float 4 within the fixed cylinder 2. When the float 4 moves between the blocking position and the floating position due to water level changes, the axial guidance ensures that the float 4 slides strictly up and down along the axial direction, preventing radial offset or tilting. Simultaneously, multiple connecting grooves 41 and connecting protrusions are provided, evenly spaced along the circumferential direction of the fixed cylinder 2 or the float 4, which can evenly distribute the external force on the float 4 throughout the entire circumference. In this embodiment, eight connecting grooves 41 and eight connecting protrusions are provided.

[0053] Furthermore, in some specific embodiments, the float-type leak-proof device further includes:

[0054] A guide tube 5 is disposed between the cylinder body 1 and the fixed cylinder 2; the outer wall of the guide tube 5 is attached to the inner wall of the cylinder body 1, and the inner wall of the guide tube 5 is fixedly connected to the outer wall of the fixed cylinder 2. In this embodiment, the fixed cylinder 2 is fixedly installed inside the guide tube 5 by multiple supports 6 evenly arranged on its outer periphery; that is, one end of the support 6 is fixedly connected to the inner wall of the guide tube 5, and the other end is fixedly connected to the outer wall of the fixed cylinder 2. In this embodiment, four supports 6 are provided, evenly distributed along the circumference of the inner wall of the guide tube 5, fixing the fixed cylinder 2 at the position of the central axis of the guide tube 5.

[0055] Specifically, the bottom of the flow guide cylinder 5 is funnel-shaped, and the small end of the flow guide cylinder 5 abuts against the sealing gasket 3. The funnel-shaped bottom can concentrate the condensed water entering the flow guide cylinder 5 from above, so that the water flow converges to the small end, avoiding the dispersion of the water flow in the flow guide cylinder 5, thereby ensuring that the water flow can orderly flow to the sealing gasket 3, preparing for the subsequent entry of the water flow into the drain pipe 7 through the communication hole 30 on the sealing gasket 3, and improving the efficiency and smoothness of the drainage. At the same time, impurities in the coal gas may cause erosion and wear of the sealing gasket 3 when flowing with the condensed water. The funnel-shaped bottom of the flow guide cylinder 5 can make the impurities flow along the funnel wall to the small end under the driving of the water flow, reducing the possibility of the impurities directly impacting the sealing gasket 3, thereby prolonging the service life of the sealing gasket 3 and ensuring the sealing performance of the sealing gasket 3.

[0056] Further, in some specific embodiments, the floating type anti-leakage device further comprises:

[0057] The drain pipe 7 is arranged below the sealing gasket 3 and communicates with the communication hole 30 in the middle of the sealing gasket 3; the drain pipe 7 is funnel-shaped. The funnel-shaped drain pipe 7 is wide at the top and narrow at the bottom, which is consistent with the principle of fluid mechanics. When the condensed water flows into the drain pipe 7 from the communication hole 30 in the middle of the sealing gasket 3, the water flow velocity gradually increases according to the continuity equation under the condition of constant flow rate as the pipe diameter gradually decreases. This enables the condensed water to be discharged from the device more quickly, reducing the accumulation time of the condensed water in the device and effectively improving the drainage efficiency of the entire drainage system, ensuring that the normal transportation of the coal gas will not be affected by excessive accumulation of condensed water in the coal gas pipeline.

[0058] Further, in some specific embodiments, an overflow port (not shown in the figure) is arranged on the side wall of the top of the cylinder body 1. When the water level in the cylinder body 1 abnormally rises due to various reasons (such as temporary blockage of the drainage system, excessive water inflow speed, etc.) during the coal gas drainage process, the overflow port can serve as an emergency drainage channel to timely discharge the excess water, prevent the cylinder body 1 from being filled with water and causing safety problems, and ensure the safe operation of the entire coal gas system.

[0059] A cleaning hole (not shown in the figure) is arranged at the bottom of the cylinder body 1, and a cleaning cover is installed at the cleaning hole. Impurities (such as tar, dust, rust, etc.) in the coal gas will enter the cylinder body 1 along with the condensed water and deposit at the bottom. Long-term accumulation may affect the performance of the device and even block the drainage channel. The arrangement of the cleaning hole enables the maintenance personnel to periodically open the cleaning cover to conveniently clean the impurities deposited at the bottom of the cylinder body 1, such as by scraping with a tool, high-pressure water washing, etc., to keep the inside of the device clean and ensure the reliability of the drainage smoothness and anti-leakage function.

[0060] The side wall of the barrel 1 is provided with a transparent visual observation window (not shown in the figure), which enables the operator to intuitively and real-timely observe the water level, the float 4, the sealing ball 40 and the like in the barrel 1 without opening the device, and to understand the running state of the device.

[0061] The utility model discloses on the basis of above floating type leak protection device still provided a kind of gas drainer, the gas drainer includes above floating type leak protection device. The utility model this gas drainer includes the whole technical scheme of above floating type leak protection device, at least has the whole advantage of above floating type leak protection device, no longer repeat here.

[0062] The above has been further described by means of specific embodiments, but it should be understood that the specific description herein should not be construed as limiting the essence and scope of the utility model, and various modifications made by those skilled in the art after reading the specification to the above embodiments all belong to the scope protected by the utility model.

Claims

1. A leak prevention device of the float type, characterized in that: It comprises: a cylinder, the top of which is provided with an inlet, and the bottom of which is provided with an outlet; a fixed cylinder, which is arranged in the inner cavity of the cylinder, is fixedly connected with the inner wall of the cylinder, and has a through structure with two open ends; a sealing gasket, which is arranged at the outlet end of the cylinder and is used for plugging the outlet of the cylinder; the sealing gasket is made of nylon material, and a communication hole is arranged in the middle of the sealing gasket; a float, which is slidably installed in the inner cavity of the fixed cylinder, and is provided with a sealing ball at the bottom; wherein the float has a plugging position and a floating position; when the float slides to the plugging position under the action of gravity, the sealing ball at the bottom of the float abuts against the communication hole of the sealing gasket, so that a sealing state is formed; when the float floats to the floating position under the action of buoyancy, the sealing ball is separated from the communication hole, and the communication hole is communicated with the inner cavity of the cylinder.

2. The float type leakage prevention device according to claim 1, wherein: one of the inner wall of the fixed cylinder and the outer wall of the float is provided with a connecting groove, and the other is provided with a connecting protrusion matched with the connecting groove.

3. The float type leakage prevention device according to claim 2, wherein: the connecting groove and the connecting protrusion are both in the shape of a long strip and are arranged along the axial direction of the fixed cylinder or the float.

4. The float type leakage prevention device according to claim 3, wherein: a plurality of the connecting grooves and the connecting protrusions are arranged, and are arranged equidistantly along the circumferential direction of the fixed cylinder or the float.

5. The float type leakage prevention device according to claim 1, further comprising: a flow guide cylinder, which is arranged between the cylinder and the fixed cylinder; the outer wall of the flow guide cylinder is attached to the inner wall of the cylinder, and the inner wall of the flow guide cylinder is fixedly connected with the outer wall of the fixed cylinder.

6. The float type leakage prevention device according to claim 5, wherein: the bottom of the flow guide cylinder is in the shape of a funnel, and the small end of the flow guide cylinder abuts against the sealing gasket.

7. The float type leakage prevention device according to claim 1, further comprising: a drain pipe, which is arranged below the sealing gasket and is communicated with the communication hole in the middle of the sealing gasket; the drain pipe is in the shape of a funnel.

8. The float type leakage prevention device according to claim 1, wherein: an overflow port is arranged in the side wall of the top of the cylinder.

9. The float type leakage prevention device according to claim 1, wherein: a cleaning hole is arranged in the bottom of the cylinder, and a cleaning cover is arranged at the cleaning hole; and / or, a transparent visual observation window is arranged in the side wall of the cylinder. The float type leakage prevention device according to any one of claims 1 to 9. ​ 10. A coal gas water drainer characterised by: ​

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