Tool for testing working capability of vehicle activated carbon powder

Abstract

The invention discloses a tool for testing the working capability of vehicle activated carbon powder. The tool comprises a hollow tool shell, the tool shell comprises a front shell and a rear shell which are distributed left and right and connected with each other; a gas inlet, a gas rectifier, gas inlet filter cloth, a carbon powder section, gas outlet filter cloth, a spring bracket, a spring and a gas outlet are sequentially arranged in an inner cavity of the tool shell from left to right; and the air inlet and the air outlet are respectively communicated with an air outlet pipeline and an air inlet pipeline of external test equipment. The tool for testing the working capacity of the vehicle activated carbon powder is used for testing the working capacity of the vehicle activated carbon powder, is scientific in design, can accurately and reliably test the adsorption capacity of the vehicle activated carbon powder to test gas, and ensures the test precision.

Description

Technical Field

[0001] The invention relates to the technical field of automobile testing, in particular to a tool for testing the working ability of activated carbon powder for automobiles. Background Art

[0002] The charcoal canister is the core component of the evaporative pollutant control system. Its main function is to absorb the gasoline vapor evaporated from the fuel tank and prevent it from entering the atmosphere to pollute the environment.

[0003] In the process of designing and developing carbon canisters, it is necessary to determine the working capacity of carbon powder in order to determine the filling amount. The existing testing method for the working capacity of carbon powder usually adopts the "Test Method for Working Capacity of Activated Carbon Butane" (National Standard GB / T 20449-2006).

[0004] However, the existing carbon powder working capacity test method is aimed at granular carbon powder, while the current automotive activated carbon powder mainly uses columnar carbon powder. If the test tool provided in the existing carbon powder working capacity test method is used, the test gas entering from the air inlet has an uneven flow rate, which will cause the adsorption process of the carbon powder to be tested to be uneven, affecting the test accuracy of the automotive columnar carbon powder's adsorption capacity for the test gas.

[0005] In addition, due to the shape of the columnar carbon powder itself, the gaps between the columnar carbon powders are larger than the gaps between the granular carbon powders, and gravity cannot compact them. As a result, during the adsorption of the test gas, the test gas will flow around the carbon powder through the gaps, making it impossible to accurately and reliably test the adsorption capacity of the automotive columnar carbon powder for the test gas, resulting in a large deviation in the test accuracy from the actual value.

[0006] Therefore, there is an urgent need to develop a technology that can solve the above technical problems. Summary of the invention

[0007] The purpose of the present invention is to provide a tool for testing the working capacity of activated carbon powder for vehicles in view of the technical defects in the prior art.

[0008] To this end, the present invention provides a vehicle activated carbon powder working capacity testing tool, comprising a hollow tool shell;

[0009] The tooling housing comprises a front housing and a rear housing distributed on the left and right and connected to each other;

[0010] The inner cavity of the tooling shell is provided with an air inlet, a gas rectifier, an air inlet filter cloth, a carbon powder section, an air outlet filter cloth, a spring bracket, a spring and an air outlet from left to right;

[0011] The air inlet and the air outlet are respectively connected to the exhaust pipeline and the air inlet pipeline of the external test equipment.

[0012] It can be seen from the technical solution provided by the present invention that, compared with the prior art, the present invention provides a vehicle activated carbon powder working capacity testing tool, which is used to test the working capacity of vehicle carbon powder. The tool is scientifically designed and can accurately and reliably test the adsorption capacity of vehicle columnar carbon powder (i.e., vehicle activated carbon powder) to the test gas, thereby ensuring the accuracy of the test and having great practical significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 An overall axial cross-sectional view of a vehicle activated carbon powder working capacity testing tool provided by the present invention;

[0014] Figure 2 It is an isometric second view of a gas rectifier in a vehicle activated carbon powder working capacity testing tool provided by the present invention;

[0015] Figure 3 This is a front view of a front shell of a vehicle activated carbon powder working capacity testing tool provided by the present invention;

[0016] Figure 4 It is a right view of the front shell of a vehicle activated carbon powder working capacity testing tool provided by the present invention;

[0017] Figure 5 It is an isometric second view of a spring bracket in a vehicle activated carbon powder working capacity testing tool provided by the present invention;

[0018] Figure 6 It is an isometric second view of the rear shell body in a vehicle activated carbon powder working capacity testing tool provided by the present invention;

[0019] Figure 7 The present invention provides a left view of the rear shell of a vehicle activated carbon powder working capacity testing tool.

[0020] In the figure, 1 is the front housing, 2 is the gas rectifier, 3 is the air inlet filter cloth, 4 is the carbon powder section, and 5 is the air outlet filter cloth;

[0021] 6—spring bracket, 7—spring, 8—rear housing;

[0022] 11—front shell joint, 12—front shell gas guide part, 13—front main shell, 14—front shell guide docking part, 15—shell installation positioning block;

[0023] 16-rectifier limit block, 61-spring bracket base, 62-spring limit seat, 63-spring guide ring; 64-spring guide frame;

[0024] 81—rear housing joint, 82—housing installation positioning groove, 83—rear housing guide portion, 84—rear housing spring limit block. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0027] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be fixedly connected or set, or it can be detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0029] See also Figures 1 to 7 , the present invention provides a vehicle activated carbon powder working capacity testing tool, comprising a hollow tool shell;

[0030] The tooling housing includes a front housing 1 and a rear housing 8 which are distributed on the left and right and connected to each other (specifically sealed connection);

[0031] The inner cavity of the tooling housing is provided with an air inlet 101, a gas rectifier 2, an air inlet filter cloth 3, a carbon powder segment 4, an air outlet filter cloth 5, a spring bracket 6, a spring 7 and an air outlet 801 from left to right;

[0032] The air inlet 101 and the air outlet 801 are respectively connected to the exhaust pipeline and the air inlet pipeline of the external test equipment;

[0033] In the present invention, the external test equipment is a well-known equipment with mature prior art, and is used to provide the test gas;

[0034] The test gas is a mixed gas consisting of butane and nitrogen in a volume ratio of 1:1, which is used to allow carbon powder to adsorb to examine the adsorption capacity (ie, working capacity) of the carbon powder.

[0035] In terms of specific implementation, the external testing equipment can be the DEVR-S-018 canister test bench produced by De Anfu (Tianjin) Automotive Technology Co., Ltd., or the Canload4LB canister loading system produced by AVL of Austria. The main purpose of these devices in the present invention is to provide a butane and nitrogen mixed gas with a stable flow rate (for example, the Chinese national standard requires that the mass flow rate of butane is 40g / h) and a volume ratio of 1:1.

[0036] It should be noted that, in the specific implementation of the external test equipment, under special circumstances, a gasoline vapor providing device (such as a car's fuel tank) can also be directly used; the exhaust port of the gasoline vapor providing device (such as a car's fuel tank) is connected to the air inlet 101 through a hollow exhaust pipe; the air inlet of the gasoline vapor providing device (such as a car's fuel tank) is connected to the exhaust port 801 through a hollow air intake pipe.

[0037] In the present invention, in a specific implementation, the air inlet 101, the gas rectifier 2, the air inlet filter cloth 3, the carbon powder segment 4, the air outlet filter cloth 5 and the spring bracket 6 are located in the inner cavity of the front housing 1;

[0038] The spring 7 and the air outlet 801 are located in the inner cavity of the rear housing 8 .

[0039] In the present invention, in a specific implementation, the air intake filter cloth 3 is specifically made of non-woven fabric;

[0040] The air outlet filter cloth 5 is also made of non-woven fabric.

[0041] In the present invention, in a specific implementation, the carbon powder segment 4 is specifically a segment of carbon powder of a preset length located in the inner cavity of the front housing 1, and the segment of carbon powder is compacted;

[0042] In a specific implementation, both left and right end surfaces of the carbon powder segment 4 are compacted flat surfaces.

[0043] It should be noted that the carbon powder is specifically automotive activated carbon powder, and specifically columnar carbon powder is automotive activated carbon powder.

[0044] In a specific implementation, the air outlet filter cloth 5 is in close contact with the right end surface of the carbon powder segment 4 .

[0045] The left and right sides of the air inlet filter cloth 3 are in contact with the right end surface of the gas rectifier 2 and the left end surface of the carbon powder segment 4 respectively;

[0046] In the present invention, in a specific implementation, the gas rectifier 2 includes a plurality of laterally distributed, hollow ventilation channels 201;

[0047] In a specific implementation, the gas rectifier 2 includes a plurality of ventilation channels 201 in a honeycomb shape;

[0048] In a specific implementation, the longitudinal cross-section of the ventilation channel 201 is a regular hexagon.

[0049] In a specific implementation, the transverse center axis of the gas rectifier 2 and the transverse center axis of the gas inlet 101 are located on the same straight line.

[0050] It should be noted that if Figure 2 As shown, the gas rectifier 2 is a structural component including a plurality of small-sized regular hexagonal structures and having a certain depth, and its function is to make the gas form a consistent movement direction (i.e., lateral movement) when passing through the component. In specific implementation, the gas rectifier 2 is a structural component with a circular outer boundary and a plurality of small-sized regular hexagonal structures arranged inside, with a side length of 3.2 mm and a wall thickness of only 0.5 mm.

[0051] In the present invention, in specific implementation, as Figure 3 and Figure 4 As shown, the front housing 1 includes a front housing joint 11, a front housing gas guide portion 12, a front main housing 13 and a front housing guide docking portion 14, which are distributed from left to right in sequence;

[0052] A housing installation positioning block 15 is provided on the circumferential outer surface of the front housing guide docking portion 14;

[0053] The housing installation positioning block 15 is used to engage with the housing installation positioning groove 82 in the rear housing 8 .

[0054] Furthermore, the air inlet 101 includes a front shell joint 11 and a transverse through hole of the inner cavity of the front shell gas guide portion 12 .

[0055] In specific implementation, four rectifier limit blocks 16 are arranged inside the front main housing 13 near one end of the front housing gas guide portion 12;

[0056] Furthermore, the four rectifier limit blocks 16 are arranged symmetrically in a "cross" shape.

[0057] In specific implementation, the front housing connector 11 is an SAE standard quick-insert male connector with a radius Φ of 15.82 mm;

[0058] The cross section of the front casing gas guide portion 12 is circular or parabolic.

[0059] In the present invention, in specific implementation, as Figure 5 As shown, the spring bracket 6 includes a spring bracket base 61, a spring limit seat 62, a spring guide ring 63 and a spring guide frame 64;

[0060] A spring limiting seat 62 is provided at the center of the spring support base 61;

[0061] At the right center of the spring limit seat 62, a transversely distributed spring guide frame 64 is provided;

[0062] The right end of the spring guide frame 64 is provided with a spring limiting ring 63;

[0063] The left end of the spring 7 is arranged on the spring guide frame 64 and the spring limiting ring 63;

[0064] The right end of the spring 7 is connected to the rear housing 8 .

[0065] In specific implementation, the spring bracket 6 is a structure of overall hollow design;

[0066] In specific implementation, the left end surface of the spring 7 is in close contact (i.e., fits) with the spring limit seat 62;

[0067] In specific implementation, the right side of the air outlet filter cloth 5 fits with the left side of the spring bracket base 61;

[0068] In a specific implementation, the outer diameter of the spring guide frame 64 is smaller than (specifically slightly smaller than) the inner diameter of the spring 7;

[0069] The outer diameter of the spring limiting ring 6 is larger than (specifically slightly larger than) the inner diameter of the spring 7;

[0070] In the present invention, in specific implementation, as Figure 6 and Figure 7 As shown, the rear housing 8 includes a rear housing guide portion 83 and a rear housing joint 81 distributed on the left and right sides;

[0071] The front housing guide docking portion 14 of the front housing 1 is inserted into the rear housing guide portion 83;

[0072] In specific implementation, a housing installation positioning groove 82 is provided on the circumferential outer side surface of the rear housing guide portion 83 at a position corresponding to the housing installation positioning block 15 on the front housing guide docking portion 14;

[0073] The housing installation positioning groove 82 is engaged with the housing installation positioning block 15 on the front housing guide docking portion 14 .

[0074] In specific implementation, six rear housing spring limit blocks 84 are arranged inside the rear housing guide portion 83;

[0075] The right end of the spring 7 is located in the spring limiting groove formed between the six rear housing spring limiting blocks 84;

[0076] Furthermore, the six rear housing spring limit blocks 84 are rotationally symmetrically distributed;

[0077] The outer ends of the six rear housing spring limit blocks 84 are fixedly arranged on the inner walls around the rear housing guide portion 83;

[0078] The gaps between the inner ends of the six rear housing spring stop blocks 84 are used as spring stop grooves.

[0079] In a specific implementation, the housing mounting positioning groove 82 is an “L-shaped” groove.

[0080] In specific implementation, the rear housing connector 81 also adopts an SAE standard quick-insert male connector with a radius Φ of 15.82 mm.

[0081] It should be noted that the exhaust port 801 includes a transverse through hole in the inner cavity of the rear shell joint 81 .

[0082] In order to more clearly understand the technical solution of the present invention, the assembly process of the present invention is described below.

[0083] In the first step, the gas rectifier 2 can be placed into the front housing 1 through the front housing guide docking portion 14 of the front housing 1 and installed on the four rectifier stoppers 16 of the front housing 1 .

[0084] The second step is to place the air intake filter cloth 3. The size of the air intake filter cloth 3 is slightly smaller than the inner diameter of the front main shell 13, and the installation should be close to the gas rectifier 2.

[0085] The third step is to fill the toner to be tested to form a toner segment 4. After the toner segment 4 is filled in place, it needs to be compacted and leveled.

[0086] The fourth step is to place the air outlet filter cloth 5 on the toner surface of the flattened toner segment 4 .

[0087] Step 5: placing the spring bracket 6 , wherein the spring bracket base 61 of the spring bracket 6 is in contact with the air outlet filter cloth 5 .

[0088] In the sixth step, the spring 7 is installed on the spring guide ring 63 and the spring guide frame 64 of the spring bracket 6 , and the left end surface of the spring 7 is in contact with the spring limit seat 62 .

[0089] In the seventh step, align the rear housing spring stopper 84 of the rear housing 8 with the right end of the spring 7, align the housing installation positioning groove 82 with the housing installation positioning block 15 of the front housing 1, and insert the front housing guide docking portion 14 into the rear housing guide portion 83.

[0090] When the front shell guide docking portion 14 and the rear shell guide portion 83 are inserted to the bottom, the shell installation positioning block 15 also just reaches the bottom of the shell installation positioning groove 82. At this time, the rear shell 8 is rotated so that the shell installation positioning block 15 is stuck in the transverse groove of the shell installation positioning groove 82. At this time, the spring 7 is compressed and has an outward pushing force. The gas rectifier 2, the air intake filter cloth 3, the carbon powder segment 4, the air outlet filter cloth 5, the spring bracket 6, and the spring 7 are all well fitted, effectively eliminating the gap between the components and further compacting the carbon powder in the carbon powder segment 4.

[0091] In order to more clearly understand the technical solution of the present invention, the specific testing process of the present invention is described below.

[0092] For the present invention, the assembled tooling of the present invention is installed on an external test device, and the front housing joint 11 and the rear housing joint 81 are respectively connected to the exhaust pipe and the intake pipe of the external test device.

[0093] The test gas (generally a mixture of butane and nitrogen in a volume ratio of 1:1) passes through the air inlet 101 in the front shell joint 11, passes through the front shell gas guide 12 and the gas rectifier 2, and the direction of the test gas movement will be consistent and relatively uniform. Then, the test gas passes through the air intake filter cloth 3 to filter the particulate impurities in the test gas, and then the test gas enters the carbon powder section 4.

[0094] The gas adsorbed by the carbon powder in the carbon powder section 4 is then filtered by the air outlet filter cloth 5. The purpose of arranging the air outlet filter cloth 5 here is to filter the powder formed by the carbon powder falling off, so as to prevent the powder formed by the carbon powder falling off from causing damage to the external test equipment. Since the spring bracket 6 is an integral hollow design, the gas can pass freely, and finally the gas returns to the external test equipment from the rear shell joint 81. Through the mature external test equipment in the prior art, the adsorption capacity (i.e., working capacity) of the carbon powder in the carbon powder section 4 on the test gas can be evaluated.

[0095] For external testing equipment, for example, the DEVR-S-018 carbon canister test bench produced by De Anfu (Tianjin) Automotive Technology Co., Ltd. or the Canload4LB carbon canister loading system produced by AVL of Austria is used. These external testing equipment use "g / 100mL" as the evaluation standard, and different carbon powders have different evaluation indicators.

[0096] Compared with the prior art, the vehicle activated carbon powder working capacity testing tool provided by the present invention has the following beneficial effects:

[0097] 1. The present invention arranges the front shell gas guide and the gas rectifier in the air intake direction, so that the test gas can pass through the test carbon powder at a uniform speed and in a consistent direction.

[0098] 2. The present invention can simulate the real use environment of carbon powder by arranging springs in the tooling, and the test results are more accurate.

[0099] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A tool for testing the working capacity of activated carbon powder for vehicles, characterized in that: A tooling shell including a hollow body; The tool housing comprises a front housing (1) and a rear housing (8) which are distributed on the left and right and connected to each other; The inner cavity of the tool housing is provided with an air inlet (101), a gas rectifier (2), an air inlet filter cloth (3), a carbon powder segment (4), an air outlet filter cloth (5), a spring bracket (6), a spring (7) and an air outlet (801) in sequence from left to right; The air inlet (101) and the air outlet (801) are respectively connected to an exhaust pipeline and an air inlet pipeline of an external test device.

2. The vehicle activated carbon powder working capacity testing tool as claimed in claim 1, characterized in that: The left and right end surfaces of the carbon powder segment (4) are both compacted and flat surfaces; and / or, The air outlet filter cloth (5) is in close contact with the right end surface of the carbon powder segment (4); The left and right sides of the air intake filter cloth (3) are respectively in contact with the right end surface of the gas rectifier (2) and the left end surface of the carbon powder segment (4).

3. The vehicle activated carbon powder working capacity testing tool as claimed in claim 1, characterized in that: The gas rectifier (2) comprises a plurality of laterally distributed hollow ventilation channels (201).

4. The vehicle activated carbon powder working capacity testing tool as claimed in claim 3, characterized in that: A gas rectifier (2) comprising a plurality of ventilation channels (201) in a honeycomb shape; The longitudinal cross-section of the ventilation channel (201) is a regular hexagon; The transverse center axis of the gas rectifier (2) and the transverse center axis of the gas inlet (101) are located on the same straight line.

5. The vehicle activated carbon powder working capacity testing tool as claimed in claim 1, characterized in that: The front housing (1) comprises a front housing joint (11), a front housing gas guide portion (12), a front main housing (13) and a front housing guide docking portion (14) which are arranged in sequence from left to right; A housing installation positioning block (15) is provided on the circumferential outer side surface of the front housing guide docking portion (14); The housing installation positioning block (15) is used for correspondingly engaging with the housing installation positioning groove (82) in the rear housing (8).

6. The vehicle activated carbon powder working capacity testing tool as claimed in claim 1, characterized in that: Four rectifier limit blocks (16) are arranged inside the front main housing (13) at one end close to the front housing gas guide portion (12); The four rectifier limit blocks (16) are arranged symmetrically in a "cross" shape.

7. The vehicle activated carbon powder working capacity testing tool as claimed in claim 1, characterized in that: A spring support (6), comprising a spring support base (61), a spring limiting seat (62), a spring guide ring (63) and a spring guide frame (64); A spring limiting seat (62) is provided at the center of the spring support base (61); A spring guide frame (64) distributed laterally is provided at the right center of the spring limiting seat (62); A spring limiting ring (63) is provided at the right end portion of the spring guide frame (64); The left end of the spring (7) is arranged on a spring guide frame (64) and a spring limiting ring (63); The right end of the spring (7) is connected to the rear housing (8).

8. The vehicle activated carbon powder working capacity testing tool as claimed in claim 7, characterized in that: The spring bracket (6) is a structure with an overall hollow design; The left end surface of the spring (7) is in close contact with the spring limit seat (62) The right side surface of the air outlet filter cloth (5) is in contact with the left side surface of the spring support base (61).

9. The vehicle activated carbon powder working capacity testing tool as claimed in any one of claims 1 to 8, characterized in that: The rear housing (8) comprises rear housing guide parts (83) and a rear housing joint (81) distributed on the left and right sides; The front housing guide docking portion (14) of the front housing (1) is inserted into the rear housing guide portion (83); A housing installation positioning groove (82) is provided on the circumferential outer side surface of the rear housing guide portion (83) at a position corresponding to the housing installation positioning block (15) on the front housing guide docking portion (14); The housing installation positioning groove (82) is engaged with the housing installation positioning block (15) on the front housing guide docking portion (14).

10. The vehicle activated carbon powder working capacity testing tool as claimed in claim 9, characterized in that: A plurality of rear housing spring limit blocks (84) are arranged inside the rear housing guide portion (83); The right end of the spring (7) is located in a spring limiting groove formed between a plurality of rear housing spring limiting blocks (84); Six rear housing spring limit blocks (84) are rotationally symmetrically distributed; The outer ends of the six rear housing spring limit blocks (84) are fixedly arranged on the inner walls around the rear housing guide portion (83); The gaps between the inner ends of the six rear housing spring stop blocks (84) are used as spring stop grooves; and / or, The housing mounting positioning groove (82) is an "L-shaped" groove.

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