Tail gas pretreatment device for special environment test equipment

Abstract

The utility model relates to the technical field of tail gas pretreatment of test equipment, in particular to a tail gas pretreatment device for special environment test equipment, which comprises a treatment cylinder, a tail gas inlet, a tail gas outlet, a tail gas inlet and a tail gas outlet, the condensation assembly comprises a condensation pipe inlet and a condensation pipe outlet, the condensation pipe inlet and the condensation pipe outlet are communicated with a condensation part located in an inner cavity of the treatment barrel in series, and cold air circulates in the condensation assembly and is used for conducting heat exchange with tail gas in the treatment barrel through the condensation part so that the tail gas can be condensed; the tail gas pretreatment device is used for solving the technical problems of high tail gas temperature, low treatment efficiency and pollution caused by high content of discharged high-temperature oil steam in tail gas pretreatment of test equipment in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of exhaust gas pretreatment technology for test equipment, and in particular to an exhaust gas pretreatment device for test equipment in special environments. Background Technology

[0002] The descriptions in this section are provided only as background information relating to this disclosure and do not constitute prior art.

[0003] The exhaust gas temperature of armored vehicles can reach 700-800 degrees Celsius. Long-term direct emission can damage the sealing elements of the pipelines. Generally, pretreatment devices are needed to cool the high-temperature exhaust gas and protect the sealing elements of the exhaust gas treatment system. In special environmental tests, exhaust emissions must be considered during vehicle environmental testing. Armored vehicle exhaust has a high oil vapor content, and the emitted exhaust gas easily pollutes the internal environment of the equipment. Pretreatment methods typically use filter consumables, but the high frequency of filter replacement affects the flow rate of the exhaust gas and cannot reduce the exhaust gas temperature. This results in frequent replacement of vulnerable parts in the exhaust gas emission pipeline, and the efficiency of exhaust gas pretreatment needs to be improved.

[0004] A novel utility model patent, CN212838026U, discloses a low-energy-consumption, high-stability exhaust gas purification device for armored vehicles. This patent includes a purification housing, an intake bend at the intake end of the housing, a connecting pipe connected to the intake bend via a flange, and a buckle at the other end of the connecting pipe for connection to the two exhaust ports of the armored vehicle. An exhaust bend is located at the exhaust end of the purification housing. Several wall-flow integral catalysts and electric heating wires are disposed within the purification housing. The electric heating wires are fixed to the inner wall of the purification housing and electrically connected to an external power source. The wall-flow integral catalyst is fixed within the purification housing by a nine-grid partition plate. Fire-resistant fiber cotton is placed between the wall-flow integral catalyst and the inner wall of the purification housing, as well as between the wall-flow integral catalyst and the nine-grid partition plate. This patented wall-flow integral catalyst within the purification housing intercepts and captures carbon soot particles in the exhaust gas and utilizes a catalytic reaction to effectively purify the exhaust pollutants from armored vehicles. The purification housing can be heated by an electric heating wire installed inside and an external power source, causing the accumulated carbon soot particles to oxidize, burn, and decompose, allowing the purification device to resume normal operation and exhaust function. However, this technology still has problems that need to be addressed, such as high-temperature exhaust emissions easily damaging sealing elements, high high-temperature oil vapor content, and low exhaust gas treatment flow rate. Utility Model Content

[0005] The purpose of this utility model is to provide a tail gas pretreatment device for special environmental testing equipment, which solves the technical problems of pollution caused by high tail gas temperature, low treatment efficiency and high content of high temperature oil vapor in the exhaust gas pretreatment of existing testing equipment.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A tail gas pretreatment device for special environmental testing equipment, comprising:

[0008] The treatment cylinder is a sealed cavity and is provided with an exhaust gas inlet and an exhaust gas outlet that connect the inner cavity.

[0009] The condensation assembly includes a condenser inlet and a condenser outlet, which are connected in series with a condensation section located inside the processing cylinder. Cold air flows through the condensation assembly to exchange heat with the exhaust gas inside the processing cylinder through the condensation section, thereby condensing the exhaust gas.

[0010] Furthermore, the condensation section includes:

[0011] The main pipeline connects the condenser inlet and condenser outlet to the two component pipelines inside the processing cylinder via a main pipeline.

[0012] Each branch pipeline has at least one branch pipeline, with one end connected to the main pipeline and the other end sealed.

[0013] The two sets of piping are connected by a horizontal connecting pipe, on which a condenser plate is installed.

[0014] Furthermore, the condenser plates are welded and installed to the horizontal connecting pipes. The number of condenser plates is the same as the number of horizontal connecting pipes, and the condenser plates are tangent to the outer wall of the horizontal connecting pipes. At the same time, the condenser plates are arranged in parallel with each other.

[0015] Furthermore, the condenser plate and the horizontal connecting pipe are detachably connected by threads, the condenser plate is provided with an internal thread connector, and the horizontal connecting pipe is provided with an external thread that mates with the internal thread connector.

[0016] Furthermore, the exhaust gas inlet includes a main exhaust gas inlet and an auxiliary exhaust gas inlet. The inner diameter of the main exhaust gas inlet is larger than the inner diameter of the auxiliary exhaust gas inlet. There is one main exhaust gas inlet and four auxiliary exhaust gas inlets. The position of the exhaust gas inlet on the treatment cylinder is not lower than the position of the exhaust gas outlet.

[0017] Furthermore, the processing cylinder is assembled from a top cover, a bottom cover, and two half-cylinders. The top cover allows the main pipeline to pass through and is sealed to it. The two half-cylinders are detachably installed with their ends sealed to the top cover and the bottom cover, respectively.

[0018] Furthermore, each group of pipelines is connected and fixed by connecting plates and connecting blocks. The two ends of the connecting plates are welded to the branch pipelines respectively, and the connecting blocks are provided with semi-circular holes to engage with the branch pipelines so as to achieve detachable installation with the branch pipelines.

[0019] Furthermore, the top cover is provided with a reserved opening that communicates with the inner cavity of the processing cylinder, and this reserved opening is used to install a removable plug.

[0020] Furthermore, the main pipeline is configured as a corrugated pipe.

[0021] Furthermore, the angle between the condenser plate and the horizontal plane is α, and the value of α is: 20° < α < 60°.

[0022] Compared with the prior art, the technical solution of this utility model has the following beneficial effects:

[0023] (1) By setting a condensation component inside the treatment cylinder, the exhaust gas introduced into the treatment cylinder is condensed and cooled by the condensation component. This not only reduces the temperature of the exhaust gas and prevents damage to the sealing elements of the exhaust gas discharge pipe due to the high temperature of the exhaust gas, but also condenses and collects high-temperature oil vapor to reduce the pollution level of the exhaust gas.

[0024] (2) By setting up a main pipeline, branch pipelines, horizontal connecting pipes and condenser plates, this utility model can maximize the heat exchange contact area between the condenser and the exhaust gas in the inner cavity of the treatment cylinder. The setting of the condenser plate and the horizontal connecting pipe is conducive to further increasing the heat exchange area, improving the heat exchange efficiency, and thus improving the efficiency of exhaust gas cooling treatment.

[0025] (3) By setting the main exhaust gas inlet and the auxiliary exhaust gas inlet, this utility model can handle exhaust gas with different flow rates. Different exhaust gas inlets can be selected according to the actual working conditions, which is highly flexible and has a wide range of applications. By setting the treatment cylinder in an assembly form, it is easy to disassemble and assemble the treatment cylinder in time for cleaning and maintenance. By setting the connecting plate and connecting block on the branch pipeline, it is easy to improve the stability of the branch pipeline installation and prevent deformation when the exhaust gas flow rate is large, which will affect normal use. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0027] Figure 2 This is a schematic diagram of the main structure of this utility model;

[0028] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure at point AA;

[0029] Figure 4 This is a schematic diagram of the three-dimensional structure inside the processing cylinder;

[0030] Figure 5 This is a schematic diagram of the main structure inside the processing cylinder;

[0031] Figure 6 This is a side view of the internal structure of the processing cylinder.

[0032] In the diagram: 100, condenser inlet; 200, condenser outlet; 300, reserved opening; 400, main exhaust gas inlet; 500, auxiliary exhaust gas inlet; 600, exhaust gas outlet; 700, treatment cylinder; 701, top cover; 702, bottom cover; 703, main pipeline; 704, branch pipeline; 705, horizontal connecting pipe; 706, condenser plate; 707, connecting block; 708, connecting plate. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent.

[0035] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of this application. The singular forms “a,” “described,” and “…” used in the embodiments of this application and the appended claims are also considered.

[0036] The word "the" is also intended to include the majority form unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0037] In the following description, when referring to the accompanying drawings, the same numbers in different drawings denote the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0038] In the description of this application, it should be understood that the terms "first," "second," "third," etc., are used only to distinguish similar objects and are not necessarily used to describe a specific order or sequence, nor should they be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0039] Furthermore, in the description of this application, unless otherwise stated, "multiple" means two or more. "And / or"

[0040] The description of the relationship between associated objects indicates that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. The character " / " generally indicates that the preceding and following associated objects have an "OR" relationship. The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0041] To address the limitations of existing technologies, this embodiment provides a technical solution. The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0042] This utility model is mainly an improvement to address the problems of easily damaged pipeline sealing elements and low flow rate affecting treatment efficiency in high-temperature exhaust gas in special environment testing equipment. The special environment can be understood as a harsh outdoor environment, and the exhaust gas it targets is mainly the high-temperature exhaust gas or oil vapor emitted by special equipment such as armored vehicles in the field.

[0043] See appendix Figure 1 and attached Figure 2 A pretreatment device for exhaust gas in special environmental testing equipment includes: a treatment cylinder 700, which is a sealed cavity. The sealed cavity is mainly designed to prevent leakage and environmental pollution during exhaust gas treatment. The sealing can be achieved by a sealing ring or other sealing element. An exhaust gas inlet and an exhaust gas outlet 600 are provided to connect the inner cavity. The exhaust gas inlet and outlet 600 are mainly used for introducing and discharging exhaust gas, respectively. A condensation assembly includes a condenser inlet 100 and a condenser outlet 200, which are connected to an external cold air generating device, such as a condenser connected to a compressor or other device that can generate cold air. The condenser inlet 100 and the condenser outlet 200 are connected in series with a condensation section located in the inner cavity of the treatment cylinder 700. The purpose of the condensation section is to exchange heat with the exhaust gas introduced into the treatment cylinder 700. The cold air flowing in the condensation assembly is used to exchange heat with the exhaust gas in the treatment cylinder 700 through the condensation section to condense the exhaust gas. By installing a condensation component inside the treatment cylinder 700, the exhaust gas introduced into the treatment cylinder 700 is condensed and cooled. This not only reduces the temperature of the exhaust gas and prevents damage to the sealing elements of the exhaust gas emission pipe due to high exhaust gas temperature, but also condenses and collects high-temperature oil vapor, thereby reducing the pollution level of the exhaust gas emissions.

[0044] See appendix Figure 2-5The condensation section includes: a main pipe 703, which is corrugated. The corrugated design is suitable for connecting components at different locations, thus having a wider range of applications. The condenser inlet 100 and the condenser outlet 200 are each connected to two sets of branch pipes 704 inside the processing cylinder 700 through a main pipe 703. It can be understood that there are two sets of branch pipes 704. One set of branch pipes 704 is connected to the condenser inlet 100 through the main pipe 703, and the other set of branch pipes 704 is connected to the condenser outlet 200 through the main pipe 703. There are at least one set of branch pipes 704. In this embodiment, there are two sets of branch pipes 704. One end of the branch pipe 704 is connected to the main pipe 703, and the other end is sealed. The two sets of branch pipes 704 are connected by several parallel horizontal connecting pipes 705. The horizontal connecting pipes 705 are equipped with condenser plates 706. Each group of pipes 704 is connected and fixed together by connecting plates 708 and connecting blocks 707. The two ends of the connecting plates 708 are welded to the branch pipes 704 respectively. The connecting blocks 707 have semi-circular holes for engaging with the branch pipes 704, allowing for detachable installation. The connecting plates 708 and connecting blocks 707 on the branch pipes 704 improve the stability of their installation, preventing deformation that could affect normal use when the exhaust gas velocity is high. See appendix. Figure 4-6 The condenser plate 706 is welded to the horizontal connecting pipe 705. The number of condenser plates 706 is the same as the number of horizontal connecting pipes 705, and the outer walls of the condenser plates 706 and horizontal connecting pipes 705 are tangent. The condenser plates 706 are also arranged in parallel. Alternatively, the condenser plates 706 and horizontal connecting pipes 705 can be detachably connected by threads. The condenser plates 706 have internal threaded connectors, and the horizontal connecting pipes 705 have external threads that mate with these connectors. The angle between the condenser plate 706 and the horizontal plane is α, where α is 20° < α < 60°, preferably α = 25°. The angle of the condenser plate 706 is designed to facilitate the flow and heat exchange of the incoming exhaust gas without creating significant resistance that could affect the exhaust gas flow rate and treatment efficiency. By setting up the main pipeline 703, branch pipelines 704, horizontal connecting pipes 705, and condenser plate 706, the heat exchange contact area between the condenser section and the exhaust gas inside the treatment cylinder 700 is increased as much as possible. The setting of condenser plate 706 and horizontal connecting pipe 705 is conducive to further increasing the heat exchange area, improving heat exchange efficiency, and thus improving the efficiency of exhaust gas cooling treatment.

[0045] See appendix Figure 3 and attached Figure 4The exhaust gas inlet includes a main exhaust gas inlet 400 and an auxiliary exhaust gas inlet 500. The inner diameter of the main exhaust gas inlet 400 is larger than the inner diameter of the auxiliary exhaust gas inlet 500. There is one main exhaust gas inlet 400 and four auxiliary exhaust gas inlets 500. The position of the exhaust gas inlets on the treatment cylinder 700 is not lower than the position of the exhaust gas outlet 600. See appendix. Figure 1 and attached Figure 2 The treatment cylinder 700 is assembled from a top cover 701, a bottom cover 702, and two half-cylinders. The top cover 701 allows the main pipeline 703 to pass through and is sealed to it. The two half-cylinders are detachably installed with their ends sealed to the top cover 701 and the bottom cover 702, respectively. The top cover 701 has a reserved opening 300 communicating with the inner cavity of the treatment cylinder 700, which is used for removable sealing when installed. By setting the main exhaust gas inlet 400 and the auxiliary exhaust gas inlet 500, it can handle exhaust gas with different flow rates. Different exhaust gas inlets can be selected according to actual working conditions, which is highly flexible and has a wide range of applications. By setting the treatment cylinder 700 in an assembled form, it is easy to disassemble and assemble the treatment cylinder 700 for cleaning and maintenance.

[0046] When the exhaust gas pretreatment device of this utility model is working, the exhaust gas to be treated enters the treatment cylinder 700 through the exhaust gas inlet. The cold air exchanges heat with the exhaust gas in the treatment cylinder 700 through the condenser pipe inlet 100 along the main pipeline 703 and the branch pipeline 704. The branch pipeline 704, the horizontal connecting pipe 705 and the condenser plate 706 can all exchange heat. The cooled and condensed exhaust gas is output through the exhaust gas outlet 600. The exhaust gas inlet can be selected according to the exhaust gas flow rate, either the main exhaust gas inlet 400 or the auxiliary exhaust gas inlet 500. If maintenance is required for long-term use, the treatment cylinder 700 can be disassembled and reassembled, which is convenient and quick.

[0047] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0048] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tail gas pretreatment device for special environmental testing equipment, characterized in that, include: The treatment cylinder (700) is a sealed cavity and is provided with an exhaust gas inlet and an exhaust gas outlet (600) that communicate with the inner cavity. The condensing assembly includes a condenser inlet (100) and a condenser outlet (200), which are connected in series with a condensing section located in the inner cavity of the processing cylinder (700). The cold air flowing in the condensing assembly is used to exchange heat with the exhaust gas in the processing cylinder (700) through the condensing section to condense the exhaust gas. The condensation section includes: The main pipeline (703) connects the condenser inlet (100) and condenser outlet (200) to two sets of pipelines (704) inside the processing cylinder (700) through the main pipeline (703); Branch pipes (704), each group of branch pipes (704) has at least one number, one end of the branch pipe (704) is connected to the main pipe (703), and the other end is sealed; The two sets of piping (704) are connected by a horizontal connecting pipe (705), on which a condenser plate (706) is installed.

2. The exhaust gas pretreatment device for special environmental testing equipment according to claim 1, characterized in that, The condenser plate (706) is welded and installed to the horizontal connecting pipe (705). The number of condenser plates (706) is the same as the number of horizontal connecting pipes (705), and the condenser plate (706) is tangent to the outer wall of the horizontal connecting pipe (705). At the same time, the condenser plates (706) are arranged in parallel.

3. The exhaust gas pretreatment device for special environmental testing equipment according to claim 1, characterized in that, The condenser plate (706) and the horizontal connecting pipe (705) are detachably connected by threads. The condenser plate (706) is provided with an internal thread connector, and the horizontal connecting pipe (705) is provided with an external thread that mates with the internal thread connector.

4. The exhaust gas pretreatment device for special environmental testing equipment according to claim 1, characterized in that, The exhaust gas inlet includes a main exhaust gas inlet (400) and an auxiliary exhaust gas inlet (500). The inner diameter of the main exhaust gas inlet (400) is larger than the inner diameter of the auxiliary exhaust gas inlet (500). There is one main exhaust gas inlet (400) and four auxiliary exhaust gas inlets (500). The position of the exhaust gas inlet on the treatment cylinder (700) is not lower than the position of the exhaust gas outlet (600).

5. The exhaust gas pretreatment device for special environmental testing equipment according to claim 1, characterized in that, The processing cylinder (700) is assembled from a top cover (701), a bottom cover (702) and two half-cylinders. The top cover (701) is through which the main pipeline (703) passes and is sealed to it. The two half-cylinders are sealed and detachable at both ends with the top cover (701) and the bottom cover (702) respectively.

6. The exhaust gas pretreatment device for special environmental testing equipment according to claim 1, characterized in that, Each group of pipelines (704) is connected and fixed by a connecting plate (708) and a connecting block (707). The two ends of the connecting plate (708) are welded to the branch pipelines (704) respectively. The connecting block (707) is provided with a semi-circular hole to engage with the branch pipelines (704) so ​​as to achieve detachable installation with the branch pipelines (704).

7. The exhaust gas pretreatment device for special environmental testing equipment according to claim 5, characterized in that, The top cover (701) is provided with a reserved opening (300) that communicates with the inner cavity of the processing cylinder (700). The reserved opening (300) is used to install a removable plug.

8. The exhaust gas pretreatment device for special environmental testing equipment according to claim 1, characterized in that, The main pipeline (703) is configured as a corrugated pipe.

9. The exhaust gas pretreatment device for special environmental testing equipment according to claim 1, characterized in that, The angle between the condenser plate (706) and the horizontal plane is α, and the value of α is: 20° < α < 60°.

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