Waste gas collecting device for nitrogen making machine

Abstract

The utility model discloses a waste gas collecting device for a nitrogen making machine, and relates to the technical field of waste gas collection for the nitrogen making machine, according to the waste gas collecting device for the nitrogen making machine, a waste gas cooling assembly is arranged in a collecting pipeline, and waste gas is discharged into a collecting tank after being cooled, so that the temperature gradient can be reduced; and for some collecting tanks made of plastic or composite materials, material performance reduction caused by high-temperature waste gas can be prevented, the collecting tanks can be protected conveniently, the service life of the waste gas collecting tanks is prolonged, the waste gas can be cooled, and meanwhile, the waste gas can be prevented from being damaged. And water vapor in the waste gas can be condensed and uniformly collected and treated, the water vapor is prevented from directly entering the collecting tank, after the waste gas is cooled, most of the water vapor is condensed and removed, and the concentration of acid gas is relatively reduced, so that formation of an acid solution is reduced, and the corrosion risk of the tank body is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to nitrogen -making machine waste gas collection technical field, concretely is nitrogen -making machine waste gas collection device. BACKGROUND

[0002] The nitrogen -making machine waste gas may contain some pollutants, such as trace carbon monoxide, carbon dioxide, hydrocarbons etc. If not collected and treated directly, it may cause the concentration of pollutants in the air to rise, and by collecting waste gas and properly treating before discharging, the content of pollutants in waste gas can meet the environmental protection standards, reducing the pollution of atmospheric environment.

[0003] In Chinese patent CN218011750U, the utility model discloses a good sealing nitrogen -making machine waste gas recycling device, including: support frame, and the upper end inboard of support frame is installed with fan, and the lower end of support frame is fixedly installed with base on the outside, the left end of fan is installed with first connecting pipe on the outside, and the left end of first connecting pipe is installed with filter screen in the inside, second connecting pipe is installed on the upper end of fan on the outside, and the right end of second connecting pipe is penetrated with first fixed bolt in the inside, and the right end of second connecting pipe is provided with sealing assembly on the downside, and the upper end of installation pipe is arranged on the inboard lower end of sealing assembly, and the inboard end of installation pipe and second connecting pipe is all provided with sealing groove. The good sealing nitrogen -making machine waste gas recycling device has good sealing structure, so that the overall sealing performance is good, can effectively avoid the leakage of waste gas in the recycling process, and has filtering function before recycling.

[0004] The existing nitrogen -making machine waste gas collection device is directly introduced into the tank through the sealing pipeline to collect the waste gas generated during the production of nitrogen, and some nitrogen -making machines generate high-temperature waste gas during operation. When these high-temperature waste gas enters the collection tank, the temperature in the tank will rise, and the high temperature may cause the performance of the tank body to decrease, such as strength reduction and toughness deterioration. When the temperature of the waste gas in the tank decreases, the water vapor in the waste gas may condense, and the condensed water may accumulate in the collection tank and combine with some acidic gases in the waste gas, such as carbon dioxide and sulfur dioxide. In a high-temperature and high-humidity environment, these acidic gases are more likely to combine with water vapor to form acidic solutions, such as carbonic acid and sulfurous acid, which may cause corrosion problems to the tank body.

[0005] In view of the above problems, a nitrogen -making machine waste gas collection device is proposed. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a nitrogen -making machine waste gas collection device, which solves the problem of damage to the tank body caused by the direct introduction of high-temperature waste gas generated by the nitrogen -making machine into the collection tank, and the problem of corrosion of the collection tank caused by the water vapor contained in the waste gas remaining in the tank after cooling.

[0007] In order to achieve the above object, the utility model provides following technical scheme: Nitrogen making machine exhaust collection device, including exhaust collection jar, the side of exhaust collection jar is installed with fan, and the fan is linked with exhaust collection jar, the air outlet of fan is fixedly connected with gas pipeline, and the inside of gas pipeline is installed with first control valve, the bottom of gas pipeline is fixedly connected with connecting elbow, the side of connecting elbow away from gas pipeline is installed with exhaust cooling assembly, exhaust cooling assembly includes cooling pipe cylinder, and cooling pipe cylinder and connecting elbow are fixedly connected, the pipe wall of cooling pipe cylinder is embedded with heat dissipation fin, the part of heat dissipation fin extending to the pipe wall in cooling pipe cylinder is fixedly connected with flow guide strip, and the both sides of the part of heat dissipation fin extending to the pipe wall outside cooling pipe cylinder are symmetrically provided with liquid cooling pipe, the cross section shape of heat dissipation fin is set as triangle, the cross section shape of liquid cooling pipe is set as semicircle, and it is fixedly connected between the plane part and heat dissipation fin.

[0008] Preferably, the bottom of the connecting elbow is provided with a condensate water collecting assembly, the condensate water collecting assembly comprises a water pipe, the water pipe is fixedly connected with the connecting elbow, and the water pipe is in communication with the connecting elbow.

[0009] Preferably, the top end of the cooling pipe cylinder is fixedly connected with a gas collecting pipe, the gas collecting pipe is in communication with the cooling pipe cylinder, and the inside of the gas collecting pipe is provided with a second control valve.

[0010] Preferably, the bottom end of the liquid cooling pipe is fixedly connected with a liquid collecting ring, and the top end of the liquid cooling pipe is fixedly connected with a liquid distributing ring.

[0011] Preferably, the side of the liquid collecting ring is fixedly connected with the cooling pipe cylinder, the end of the second liquid conveying pipe is provided with a heat exchanger, the top of the heat exchanger is provided with a water pump, the water pump is in communication with the heat exchanger, the water outlet end of the water pump is fixedly connected with a first liquid conveying pipe, and the first liquid conveying pipe is in communication with the liquid distributing ring.

[0012] Preferably, the inside of the threaded joint is fixedly connected with an anti-splashing cotton cloth, the bottom of the anti-splashing cotton cloth is fixedly connected with a water guide cotton rope, and the bottom end of the water guide cotton rope is fixedly connected with the inner wall of the condensate water collecting bottle.

[0013] Preferably, the outside of the threaded joint is fixedly connected with a lower fixed flange, the side of the lower fixed flange is penetrated by a fixed bolt, the outside of the water pipe is fixedly connected with an upper fixed flange, the side of the upper fixed flange is also penetrated by the fixed bolt, and the end of the fixed bolt is threadedly connected with a fixed nut.

[0014] Preferably, the top end of the threaded joint is fixedly connected with a sealing rubber ring, and the top surface of the sealing rubber ring is tightly attached to the bottom surface of the upper fixed flange.

[0015] Compared with the prior art, the utility model has the beneficial effects as follows:

[0016] 1、 the waste gas collecting device for nitrogen making machine provided by the utility model, through cooling the waste gas before discharging into the collecting tank, the temperature gradient can be reduced, the damage of heat stress to the tank body is reduced, for some collecting tanks made of plastic or composite material, the performance of the material can be prevented from being reduced by high-temperature waste gas, the collecting tank is convenient to protect, and the service life of the waste gas collecting tank is improved.

[0017] 2、 the waste gas collecting device for nitrogen making machine provided by the utility model, while cooling the waste gas, the water vapor in the waste gas can be condensed and uniformly collected and treated, the water vapor is prevented from directly entering the inside of the collecting tank, after the waste gas is cooled, most of the water vapor is removed by condensation, the concentration of acid gas is relatively reduced, thereby the formation of acid solution is reduced, and the corrosion risk of the tank body is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the whole three-dimensional structure schematic diagram of the utility model;

[0019] Figure 2 It is the three-dimensional structure schematic diagram of the novel waste gas cooling assembly part of the utility model;

[0020] Figure 3 It is the explosion structure schematic diagram of the condensate water collecting assembly part of the utility model;

[0021] Figure 4 It is the cross section structure schematic diagram of the condensate water collecting assembly part of the utility model;

[0022] Figure 5 It is Figure 4 The enlarged structure schematic diagram of A in the middle.

[0023] In the figure: 1, exhaust gas collection tank; 2, fan; 3, air supply pipeline; 4, condensate water collection assembly; 5, connecting elbow; 6, exhaust gas cooling assembly; 7, first control valve; 8, gas collection pipeline; 9, second control valve; 401, water pipe; 402, threaded joint; 403, sealing rubber ring; 404, splash-proof cotton cloth; 405, water guide cotton rope; 406, condensate water collection bottle; 407, lower fixing flange; 408, fixing bolt; 409, upper fixing flange; 410, fixing nut; 601, cooling pipe cylinder; 602, flow guide strip; 603, heat dissipation fin; 604, liquid cooling pipeline; 605, liquid collection ring; 606, liquid distribution ring; 607, first liquid conveying pipe; 608, water pump; 609, heat exchanger; 610, second liquid conveying pipe. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0025] In order to further understand the content of the present application, the present application will be described in detail in combination with the drawings.

[0026] Embodiment one

[0027] Please refer to Figures 1 to 5 The exhaust gas collecting device for the nitrogen making machine comprises an exhaust gas collection tank 1, a fan 2 is installed on the side of the exhaust gas collection tank 1, the fan 2 is in communication with the exhaust gas collection tank 1, an air supply pipeline 3 is fixedly connected to the air outlet of the fan 2, a first control valve 7 is installed in the air supply pipeline 3, a connecting elbow 5 is fixedly connected to the bottom end of the air supply pipeline 3, a gas collection pipeline 8 is fixedly connected to the top end of a cooling pipe cylinder 601, the gas collection pipeline 8 is in communication with the cooling pipe cylinder 601, and a second control valve 9 is installed in the gas collection pipeline 8.

[0028] The end of the gas collection pipeline 8 is connected to the exhaust port of the nitrogen making machine. During the operation of the nitrogen making machine, the exhaust gas generated is sequentially guided through the gas collection pipeline 8, the cooling pipe cylinder 601, the connecting elbow 5 and the air supply pipeline 3, and is drawn into the interior of the exhaust gas collection tank 1 under the action of the fan 2 for collection. The second control valve 9 and the first control valve 7 are used for controlling the opening and closing of the pipeline.

[0029] The waste gas cooling assembly 6 is installed on the side of the connecting elbow 5 away from the gas supply pipeline 3, and the waste gas cooling assembly 6 comprises a cooling pipe cylinder 601, and the cooling pipe cylinder 601 is fixedly connected with the connecting elbow 5, the pipe wall of the cooling pipe cylinder 601 is embedded with heat dissipation fins 603, the part of the heat dissipation fins 603 extending to the inner pipe wall of the cooling pipe cylinder 601 is fixedly connected with a flow guide strip 602, and the part of the heat dissipation fins 603 extending to the outer pipe wall of the cooling pipe cylinder 601 is symmetrically provided with a liquid cooling pipe 604 on both sides, the cross-sectional shape of the heat dissipation fins 603 is triangular, the inwardly protruding flow guide strip 602 can effectively increase the contact area of the high-temperature waste gas flowing through and the inner wall of the pipeline, and the cooling efficiency is improved, each flow guide strip 602 cooperates with each other to form a V-shaped groove consistent with the direction of the cooling pipe cylinder 601 between every two flow guide strips 602, so that the condensed water droplets on the inner wall can be guided, the cross-sectional shape of the liquid cooling pipe 604 is semicircular, and the plane part of the liquid cooling pipe 604 is fixedly connected with the heat dissipation fins 603, the bottom end of the liquid cooling pipe 604 is fixedly connected with a liquid collecting ring 605, the top end of the liquid cooling pipe 604 is fixedly connected with a liquid distributing ring 606, the side of the liquid collecting ring 605 is fixedly connected with the cooling pipe cylinder 601, and the end of the second liquid conveying pipe 610 is provided with a heat exchanger 609, the top of the heat exchanger 609 is provided with a water pump 608, the water pump 608 is communicated with the heat exchanger 609, the outlet end of the water pump 608 is fixedly connected with a first liquid conveying pipe 607, and the first liquid conveying pipe 607 is communicated with the liquid distributing ring 606.

[0030] Under the power of the water pump 608, the coolant in the heat exchanger 609 enters the liquid distributing ring 606 through the first liquid conveying pipe 607, flows into the liquid collecting ring 605 below through each liquid cooling pipe 604, and finally returns to the inside of the heat exchanger 609 through the cooling pipe cylinder 601 to form a liquid cooling cycle, the heat exchanger 609 is used for cooling the coolant, when the high-temperature waste gas flows through the inside of the cooling pipe cylinder 601, the heat thereof will be guided to the heat dissipation fins 603 through the flow guide strip 602, the second liquid conveying pipe 610 and the liquid cooling pipe 604 closely attached to the both sides of the heat dissipation fins 603, which can effectively take away the heat on the heat dissipation fins 603, thereby realizing the effect of cooling the waste gas in the cooling pipe cylinder 601, when the waste gas is cooled, the water vapor carried in the waste gas condenses into small water droplets under the condensation, and the small water droplets can flow into the inside of the condensate collecting assembly 4 below for collection under the guidance of the flow guide strip 602.

[0031] The bottom of the connecting elbow 5 is provided with a condensed water collecting assembly 4, which comprises a water pipe 401 fixedly connected with the connecting elbow 5 and communicating with the connecting elbow 5, a threaded connector 402 externally threadedly connected with the water pipe 401, a condensed water collecting bottle 406 fixedly connected with the bottom of the threaded connector 402 and communicating with the threaded connector 402, a splash-proof cotton cloth 404 fixedly connected with the inside of the threaded connector 402, a water guiding cotton rope 405 fixedly connected with the bottom of the splash-proof cotton cloth 404 and the inner wall of the condensed water collecting bottle 406, a lower fixed flange 407 fixedly connected with the outside of the threaded connector 402, a fixing bolt 408 penetrating through the side of the lower fixed flange 407, an upper fixed flange 409 fixedly connected with the outside of the water pipe 401, the fixing bolt 408 also penetrating through the side of the upper fixed flange 409, a fixing nut 410 threadedly connected with the end of the fixing bolt 408, and a sealing rubber ring 403 fixedly connected with the top end of the threaded connector 402 and tightly abutting against the bottom surface of the upper fixed flange 409.

[0032] The condensed water in the exhaust gas cooling assembly 6 flows into the bottom end of the cooling pipe cylinder 601, i.e. the connecting elbow 5, and then flows into the condensed water collecting bottle 406 below through the water pipe 401 and the threaded connector 402 for collection. When the condensed water enters the condensed water collecting bottle 406, it first falls on the splash-proof cotton cloth 404 and then flows along the water guiding cotton rope 405 to the inner wall of the condensed water collecting bottle 406, and then gradually flows into the inside of the condensed water collecting bottle 406 for collection, instead of directly dropping into the condensed water collecting bottle 406, so as to prevent the noise caused by the continuous dripping of water drops. After the condensed water collecting bottle 406 is filled, the threaded connector 402 can be unscrewed from the water pipe 401, and the water in the threaded connector 402 can be uniformly treated. In addition to the threaded connection between the threaded connector 402 and the water pipe 401, a flange connection is additionally provided to enhance the stability of the connection and prevent the threaded connector 402 from being accidentally detached and causing gas leakage.

[0033] It should be noted that the relative terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or sequence between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0034] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A waste gas collecting device for a nitrogen generator, characterized by: The utility model provides waste gas collecting tank (1), the side of waste gas collecting tank (1) installs the fan (2), and the fan (2) is linked with waste gas collecting tank (1), the air outlet of fan (2) is fixedly connected with the gas delivery pipeline (3), and the inside installation of gas delivery pipeline (3) has first control valve (7), the bottom of gas delivery pipeline (3) is fixedly connected with the connecting elbow (5), the side of connecting elbow (5) away from gas delivery pipeline (3) is installed waste gas cooling assembly (6), waste gas cooling assembly (6) includes cooling pipe cylinder (601), and cooling pipe cylinder (601) and connecting elbow (5) are fixedly connected, the pipe wall of cooling pipe cylinder (601) is embedded with heat dissipation fin (603), the part of heat dissipation fin (603) extending to the inside pipe wall of cooling pipe cylinder (601) is fixedly connected with the flow guide strip (602), and the part of heat dissipation fin (603) extending to the outside pipe wall of cooling pipe cylinder (601) is provided with liquid cooling pipe (604) two sides symmetry, the cross section shape of heat dissipation fin (603) is set up as triangle, the cross section shape of liquid cooling pipe (604) is set up as semicircle, and its plane part and heat dissipation fin (603) are fixedly connected; The bottom of connecting elbow (5) is installed with condensate water collecting assembly (4), condensate water collecting assembly (4) includes water pipe (401), and water pipe (401) and connecting elbow (5) are fixedly connected, and water pipe (401) is communicated with connecting elbow (5), the outside of water pipe (401) is threadedly connected with threaded connector (402), and the bottom of threaded connector (402) is fixedly connected with condensate water collecting bottle (406), and condensate water collecting bottle (406) is communicated with threaded connector (402); The top of cooling pipe cylinder (601) is fixedly connected with gas collecting pipeline (8), and gas collecting pipeline (8) is communicated with cooling pipe cylinder (601), and the inside of gas collecting pipeline (8) is installed with second control valve (9).

2. The exhaust gas collecting device for a nitrogen generator according to claim 1, characterized by: The bottom of liquid cooling pipe (604) is fixedly connected with liquid collecting ring (605), and the top of liquid cooling pipe (604) is fixedly connected with liquid distributing ring (606).

3. The exhaust gas collecting device for a nitrogen generator according to claim 2, characterized by: The side of liquid collecting ring (605) is fixedly connected with cooling pipe cylinder (601), and the end of second liquid conveying pipe (610) is installed with heat exchanger (609), the top of heat exchanger (609) is installed with water pump (608), and water pump (608) is communicated with heat exchanger (609), the water outlet of water pump (608) is fixedly connected with first liquid conveying pipe (607), and first liquid conveying pipe (607) is communicated with liquid distributing ring (606).

4. The exhaust gas collecting device for a nitrogen generator according to claim 1, characterized by: The inside of threaded connector (402) is fixedly connected with splash-proof cotton cloth (404), and the bottom of splash-proof cotton cloth (404) is fixedly connected with water guide cotton rope (405), and the bottom of water guide cotton rope (405) is fixedly connected with the inner wall of condensate water collecting bottle (406).

5. The exhaust gas collecting device for a nitrogen generator according to claim 4, characterized by: The outer part of the threaded joint (402) is fixedly connected with a lower fixed flange (407), and a fixing bolt (408) penetrates through the side of the lower fixed flange (407); the outer part of the water pipe (401) is fixedly connected with an upper fixed flange (409), and the fixing bolt (408) also penetrates through the side of the upper fixed flange (409), and the end of the fixing bolt (408) is fixedly connected with a fixing nut (410) in a threaded mode.

6. The exhaust gas collecting device for a nitrogen generator according to claim 4, characterized by: The top end of the threaded joint (402) is fixedly connected with a sealing rubber ring (403), and the top surface of the sealing rubber ring (403) is tightly attached to the bottom surface of the upper fixed flange (409).

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