CN112302835B

CN112302835B - Integrated carbon tank

Info

Publication number: CN112302835B
Application number: CN202011256591.0A
Authority: CN
Inventors: 刘隆娇; 罗来勇; 杨亚轩
Original assignee: Jiangxi Changhe Automobile Co Ltd
Current assignee: Jiangxi Changhe Automobile Co Ltd
Priority date: 2020-11-11
Filing date: 2020-11-11
Publication date: 2021-09-28
Anticipated expiration: 2040-11-11
Also published as: CN112302835A

Abstract

The invention discloses an integrated carbon tank, which comprises a carbon tank (1), an electromagnetic valve (2), an inlet connector (3), an outlet connector (4) and an electromagnetic valve connector (5), wherein one end of the carbon tank is provided with the inlet connector and the outlet connector, the electromagnetic valve is integrated at one end of the carbon tank, and one end of the inlet connector is connected with a pressure regulating device (6), and the integrated carbon tank is characterized in that: the pressure adjusting device (6) comprises an outer cylinder (61), a first end portion (62), a second end portion (63) and an inner cylinder (64), wherein a plurality of flexible adjusting portions (65) are arranged on the inner circumference of the inner cylinder along the circumferential direction, one or more communicating holes (67) are formed in the inner cylinder, a plurality of flexible buffer air cavities (66) are arranged in the containing cavity, and the flexible adjusting portions are communicated with the flexible buffer air cavities through the one or more communicating holes. This integrated form carbon tank can automatically regulated carbon tank inlet pipeline's pressure to pressure in the balanced/stable carbon tank reduces the great problem that influences the testing result of carbon tank pressure fluctuation.

Description

Integrated carbon tank

Technical Field

The invention relates to the technical field of automobile fuel system detection devices, in particular to an integrated carbon tank.

Background

The existing integrated carbon tank integrates an electromagnetic stop valve and a leakage detection device on the carbon tank, and has the advantages of simple structure, reduced part purchasing cost and higher monitoring efficiency. Like publication number CN210003426U, the utility model belongs to the technical field of the car, concretely relates to carbon tank of integrated CVS solenoid valve, include: the carbon tank comprises a carbon tank body, wherein one side of the carbon tank body is provided with an installation part and an outer through pipe; a ventilation air cavity is arranged in the carbon tank body; an installation cavity is arranged in the installation part, the upper part of the installation cavity is open and is communicated with the ventilation air cavity of the carbon tank body; the outer through pipe is connected to the lower part of the mounting part and communicated with the mounting cavity; the CVS electromagnetic valve is matched with the mounting cavity in shape and is suitable for being inserted into the mounting cavity of the mounting part from an open position. The utility model discloses an outside at the carbon tank body air cavity of ventilating sets up the installation department that has the installation cavity with integrated installation CVS solenoid valve, not changing on its carbon tank and CVS solenoid valve theory of operation's the basis with the CVS solenoid valve is integrated to the carbon tank body, not only save cost and assembly man-hour, still reduce fuel evaporation emission limit value simultaneously. The utility model discloses a CN206071758U, the utility model discloses an integrated carbon tank, including the jar body that is provided with accommodation space inside, the carbon powder layer that is located the jar body, the filter layer that is located the carbon powder layer top, the liquid collecting chamber and the desorption chamber and the atmospheric air chamber that are located the filter layer top and set up at an interval each other, communicate in the adsorption tube in liquid collecting chamber, communicate in desorption chamber's desorption pipe, communicate in the logical atmospheric air pipe in atmospheric air chamber; the tank body comprises an electromagnetic valve mounting shell positioned above an atmosphere cavity, an electromagnetic valve is arranged in the electromagnetic valve mounting shell, and the electromagnetic valve is positioned on an air path between the atmosphere cavity and the atmosphere pipe; the tank body is also provided with a pressure sensor, and a probe of the pressure sensor is arranged in the atmospheric cavity or the desorption cavity. Adopt above-mentioned technical scheme, the utility model discloses an installation space is saved to integrated carbon tank, makes things convenient for maintenance personal to clean, change the solenoid valve, is favorable to the reliability that the OBD system detected. The publication number CN204299733U, a self-detecting automobile carbon tank, a tank body is internally provided with a partition board which divides an inner cavity into a first inner cavity and a second inner cavity, and the first inner cavity and the second inner cavity are communicated with a gap between a lower cover and the bottom of the partition board; the upper cover is provided with a first liquid collecting chamber and a second liquid collecting chamber which are respectively communicated with the first inner chamber and the second inner chamber; the upper cover is provided with a first vacuum valve and a second vacuum valve which are respectively communicated with the first liquid collecting chamber and the second liquid collecting chamber; the first vacuum valve is provided with a first adsorption port, and the second vacuum valve is provided with an air supplementing port and an adsorption air outlet; the first liquid collecting chamber is also provided with a second adsorption port and a desorption port; the inner diameter of the first adsorption port is smaller than that of the second adsorption port; a pressure detection system is also included. The utility model has the advantages that: thereby carry out pressure self test simultaneously and judge the gas tightness when starting the vehicle, ensure the normal clear of absorption desorption. The invention discloses a pressure sensor for an automobile carbon tank desorption system, which comprises a shell, an upper cover and a core body, wherein the shell is provided with a through hole; the shell comprises an internal cavity with an open top, an electrical connection joint, air nozzles positioned on two sides of the shell and communicated with the internal cavity, and the upper cover covers the top of the internal cavity; the air faucet is communicated with the through hole in the inner cavity and is used for leading in the fluid to be measured; the core body is adhered to the through hole in the inner cavity and comprises a substrate and a sensor chip, the substrate is connected with the sensor chip, and a pressure-sensitive element is integrated on the sensor chip. The invention considers the use environment of the carbon tank desorption device, the shell is made of special oil-resistant materials, and the pressure sensor has a simple structure and is specially designed and suitable for a carbon tank desorption system.

However, the existing integrated carbon tank has higher requirements on the pressure stability control and the detection result stability of the carbon tank.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide an integrated carbon tank which can automatically adjust the pressure of an inlet pipeline of the carbon tank, thereby balancing/stabilizing the pressure in the carbon tank and reducing the problem that the pressure fluctuation of the carbon tank is large to influence the detection result.

In order to achieve the purpose, the invention adopts the technical scheme that:

an integrated carbon tank, which comprises a carbon tank (1), a solenoid valve (2), an inlet joint (3), an outlet joint (4) and a solenoid valve joint (5), wherein one end of the carbon tank is provided with the inlet joint and the outlet joint, the solenoid valve is integrated at the one end of the carbon tank, the solenoid valve is provided with the solenoid valve joint, the inlet joint, the outlet joint and the solenoid valve joint are arranged in a substantially parallel way, one end of the inlet joint is connected with a pressure regulating device (6), and the integrated carbon tank is characterized in that: pressure adjusting device (6) includes urceolus (61), first end (62), second end (63), inner tube (64), the urceolus is located the periphery of inner tube, the urceolus, the both ends of inner tube are respectively in first end, the second end is connected, constitute between urceolus and the inner tube and hold the chamber, the inner periphery of first end has first erection joint hole (68), the inner periphery of second end has second erection joint hole (69), the inner periphery of inner tube is provided with a plurality of flexible regulation portion (65) along circumference, be provided with one or more intercommunicating pore (67) on the inner tube, it is provided with a plurality of flexible buffer air chamber (66) to hold the intracavity, flexible regulation portion is linked together with flexible buffer air chamber through one or more intercommunicating pore, the inner chamber of flexible regulation portion, the gas of certain pressure has been preset in the flexible buffer air chamber.

Further, the flexible adjusting portion comprises a flexible conical portion (70) and a flexible arc-shaped portion (71) which are connected in sequence, the flexible conical portion is located on the fluid upstream of the flexible arc-shaped portion, and the axial length of the flexible conical portion is larger than that of the flexible arc-shaped portion.

Further, the axial length of the flexible conical part is 2-4 times of the axial length of the flexible arc-shaped part, and the flexible arc-shaped part is in a mushroom shape.

Further, the flexible adjusting portion comprises a partition wall (72), the partition wall is located in the middle of the flexible adjusting portion and divides the flexible adjusting portion into a first flexible cavity and a second flexible cavity, and the first flexible cavity and the second flexible cavity are communicated with the flexible buffer air cavity through a communication hole respectively.

Further, a flexible regulating part is communicated with a flexible buffer air cavity through one or more communicating holes.

This integrated form carbon tank, this integrated form carbon tank can automatically regulated carbon tank inlet pipeline's pressure to pressure in the balanced/stable carbon tank reduces the great problem that influences the testing result of carbon tank pressure fluctuation.

Drawings

FIG. 1 is a schematic diagram of an integrated canister structure according to the present invention;

FIG. 2 is a schematic structural diagram of a pressure regulating device according to the present invention;

fig. 3 is a schematic structural diagram of the pressure regulating device of the present invention.

In the figure: the carbon canister comprises a carbon canister 1, a solenoid valve 2, an inlet joint 3, an outlet joint 4, a solenoid valve joint 5, a pressure adjusting device 6, an outer cylinder 61, a first end portion 62, a second end portion 63, an inner cylinder 64, a flexibility/elasticity adjusting portion 65, a flexible buffer air chamber 66, a communication hole 67, a first mounting connection hole 68, a second mounting connection hole 69, a flexible conical portion 70, a flexible arc portion 71 and a partition wall 72.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 to 3, an integrated canister includes a canister 1, a solenoid valve 2, an inlet connector 3, an outlet connector 4, and a solenoid valve connector 5, wherein the canister 1 has the inlet connector 3 and the outlet connector 4 at one end thereof, the solenoid valve 2 and/or a leak detection device is integrated with the one end of the canister 1, the solenoid valve connector 5 is provided on the solenoid valve 2, the inlet connector 3, the outlet connector 4, and the solenoid valve connector 5 are arranged substantially in parallel, and one end of the inlet connector 3 is connected to a pressure adjustment device 6.

The pressure adjusting device 6 comprises an outer cylinder 61, a first end part 62, a second end part 63 and an inner cylinder 64, wherein the outer cylinder 61 is positioned at the periphery of the inner cylinder 64, two ends of the outer cylinder 61 and the inner cylinder 64 are respectively connected with the first end part 62 and the second end part 63, an accommodating cavity is formed between the outer cylinder 61 and the inner cylinder 64, the inner periphery of the first end part 62 is provided with a first mounting connecting hole 68, the inner periphery of the second end part 63 is provided with a second mounting connecting hole 69, the inner periphery of the inner cylinder 64 is provided with a plurality of flexible/elastic adjusting parts 65 along the circumferential direction, the inner cylinder 64 is provided with one or a plurality of communicating holes 67, a plurality of flexible buffer air cavities 66 are arranged in the accommodating cavity, each flexible adjusting part 65 is communicated with each flexible buffer air cavity 66 through one or a plurality of communicating holes 67, and gas with certain pressure is preset in the inner cavity of the flexible adjusting part 65 and the flexible buffer air cavities 66. When the fluid pressure in the carbon tank 1 inlet pipeline is large, the fluid pressure in the inlet pipeline drives the flexible adjusting part 65 to deform and be compressed, so that the flow area of the inlet pipeline is changed, the fluid pressure in the inlet pipeline is adjusted, the influence of pressure fluctuation on the pressure change in the carbon tank 1 is reduced, and the risk of influencing the detection result due to the pressure fluctuation is reduced. When the fluid pressure in the inlet duct decreases, the flexible adjustment portion 65 resumes the preset inflation stiffness/shape.

Further, the flexible adjusting portion 65 includes a flexible tapered portion 70 and a flexible arc portion 71 connected in sequence, the flexible tapered portion 70 is located upstream of the flexible arc portion 71, and the axial length of the flexible tapered portion 70 is greater than the axial length of the flexible arc portion 71, such as 2-4 times; the flexible arcuate portion 71 is "mushroom" shaped. The structure design is beneficial to the flow guiding and the compression deformation of the flexible adjusting part 65.

Further, the flexible adjustment portion 65 includes a partition wall 72, the partition wall 72 is located at an intermediate position of the flexible adjustment portion 65, the partition wall 72 divides the flexible adjustment portion 65 into a first flexible chamber and a second flexible chamber, and the first flexible chamber and the second flexible chamber are respectively communicated with the flexible buffer air chamber 66 through a communication hole 67. A flexible regulation portion 65 is communicated with a flexible buffer air chamber 66 through one or more communication holes 67, and has independent pressure regulation.

This integrated form carbon tank, when the fluid pressure in the carbon tank inlet pipeline is great, the fluid pressure in the inlet pipeline orders about flexible regulation portion and is out of shape and compressed to change inlet pipeline flow area, thereby adjust the fluid pressure in the inlet pipeline, thereby reduce the influence that the pressure fluctuation changed to carbon tank internal pressure, reduce because of the pressure fluctuation influences the risk of testing result. When the fluid pressure in the inlet pipeline is reduced, the flexible adjusting part restores the preset inflation rigidity/shape. This integrated form carbon tank can automatically regulated carbon tank inlet pipeline's pressure to pressure in the balanced/stable carbon tank reduces the great problem that influences the testing result of carbon tank pressure fluctuation.

The above-described embodiments are illustrative of the present invention and not restrictive, it being understood that various changes, modifications, substitutions and alterations can be made herein without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated carbon tank, which comprises a carbon tank (1), a solenoid valve (2), an inlet joint (3), an outlet joint (4) and a solenoid valve joint (5), wherein one end of the carbon tank is provided with the inlet joint and the outlet joint, the solenoid valve is integrated at the one end of the carbon tank, the solenoid valve is provided with the solenoid valve joint, the inlet joint, the outlet joint and the solenoid valve joint are arranged in a substantially parallel way, one end of the inlet joint is connected with a pressure regulating device (6), and the integrated carbon tank is characterized in that: the pressure adjusting device (6) comprises an outer cylinder (61), a first end part (62), a second end part (63) and an inner cylinder (64), wherein the outer cylinder is positioned at the periphery of the inner cylinder, the two ends of the outer cylinder and the inner cylinder are respectively connected with the first end part and the second end part, a containing cavity is formed between the outer cylinder and the inner cylinder, the inner periphery of the first end part is provided with a first mounting connecting hole (68), the inner periphery of the second end part is provided with a second mounting connecting hole (69), the inner periphery of the inner cylinder is circumferentially provided with a plurality of flexible adjusting parts (65), one or more communicating holes (67) are arranged on the inner cylinder, a plurality of flexible buffer air cavities (66) are arranged in the containing cavity, the flexible adjusting parts are communicated with the flexible buffer air cavities through the one or more communicating holes, and gas with certain pressure is preset in the inner cavity of the flexible adjusting parts and the flexible buffer air cavities;

the flexible adjusting part comprises a flexible conical part (70) and a flexible arc-shaped part (71) which are sequentially connected, the flexible conical part is positioned on the fluid upstream of the flexible arc-shaped part, and the axial length of the flexible conical part is greater than that of the flexible arc-shaped part; the flexible adjusting part comprises a partition wall (72), the partition wall is located in the middle of the flexible adjusting part and divides the flexible adjusting part into a first flexible cavity and a second flexible cavity, and the first flexible cavity and the second flexible cavity are communicated with the flexible buffer air cavity through a communicating hole respectively.

2. An integrated canister as claimed in claim 1, wherein the axial length of the flexible cone is 2-4 times the axial length of the flexible arc, the flexible arc being "mushroom".

3. An integrated type canister as claimed in claim 2, wherein a flexible adjusting portion is communicated with a flexible buffer air chamber through one or more communication holes.