CN215985193U

CN215985193U - Thermal test fuel tank

Info

Publication number: CN215985193U
Application number: CN202122400373.6U
Authority: CN
Inventors: 向娜; 蒲伟; 樊友为; 黄涛
Original assignee: Chongqing Changan Automobile Co Ltd
Current assignee: Chongqing Changan Automobile Co Ltd
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2022-03-08
Anticipated expiration: 2031-09-30

Abstract

The utility model relates to a thermal test fuel tank, which comprises a fuel tank cover and a fuel tank body with an opening at the upper end, wherein the fuel tank cover seals the opening at the upper end of the fuel tank body, the fuel tank cover and the fuel tank body enclose an oil storage cavity, a floating ball switch and a sound wave liquid level meter are installed on the fuel tank cover, a floating ball of the floating ball switch is positioned in the oil storage cavity, a detection rod of the sound wave liquid level meter extends into the oil storage cavity, a communication type liquid level meter is connected to the outer side of the fuel tank body, the upper end of the communication type liquid level meter is communicated with the upper part of the oil storage cavity, the lower end of the communication type liquid level meter is communicated with the lower part of the oil storage cavity, and the middle part of the communication type liquid level meter is a transparent visual pipe. The utility model realizes multiple-effect protection of fuel supply safety, solves the subsequent safety problem caused by failure of a certain link, improves the safety of engine hot test bench detection, protects the safety and health of workers, and provides reliable guarantee for the safe operation of a production line.

Description

Thermal test fuel tank

Technical Field

The utility model relates to an engine, in particular to a thermal test fuel tank.

Background

Before an engine is sent to a whole vehicle assembly workshop, a hot test rack is used as a terminal detection station of the engine, the whole vehicle state needs to be simulated for energy matching, water (antifreeze) is temporarily filled into a water channel of the engine on the hot test rack, fuel (gasoline) is filled into a fuel system, power is supplied to an electronic fuel injection system, and the like. With the normal supply of the energy sources, the normal operation of the engine can be ensured, and the test items specified by the subsequent process are completed. Because the antifreeze and the fuel belong to flammable substances, the safe production of energy fire protection is ensured, unsafe factors are overcome, and the protection of the safety and health of workers is an important premise of the process link, the monitoring, alarming and multi-effect control functions on the fire safety problem of equipment are required to be continuously perfected in the whole rack design, and the safety problem is ensured to be completely lost. In the process of detecting an engine by an actual hot test bench, fuel supply is excessive due to failure of an electronic liquid level meter of a fuel tank, the fuel overflows through a breather valve and drips and leaks in a ground area of a position where the fuel tank is installed outside a hot test container, an operator performs hot test detection in a room, and each gas detector is installed in the hot test room. The problem of oil leakage is usually discovered only after the leakage amount is large until the air of a workshop (outside a hot test room) is locally diffused with a thick fuel smell, so that the safety risk is high.

Disclosure of Invention

The utility model aims to provide a hot test fuel tank to reduce or eliminate the problem of high safety risk caused by failure of an electronic liquid level meter.

The utility model discloses a thermal test fuel tank which comprises a fuel tank cover and a fuel tank body with an opening at the upper end, wherein the fuel tank cover seals the opening at the upper end of the fuel tank body, the fuel tank cover and the fuel tank body enclose an oil storage cavity, a floating ball switch and a sound wave liquid level meter are installed on the fuel tank cover, a floating ball of the floating ball switch is located in the oil storage cavity, a detection rod of the sound wave liquid level meter extends into the oil storage cavity, a communicated liquid level meter is connected to the outer side of the fuel tank body, the upper end of the communicated liquid level meter is communicated with the upper part of the oil storage cavity, the lower end of the communicated liquid level meter is communicated with the lower part of the oil storage cavity, and the middle part of the communicated liquid level meter is a transparent visual pipe.

Further, the upper end of the visual pipe is provided with a liquid level ultra-high mark, and the lower end of the visual pipe is provided with a liquid level ultra-low mark.

Further, the acoustic level gauge includes an acoustic level gauge head supported on an upper side of the fuel tank cover.

Furthermore, a plurality of detection positions which are arranged at intervals along the vertical direction are arranged on a detection rod of the acoustic wave liquid level meter.

Further, the float switch comprises a float switch head supported on the upper side of the fuel tank cover and a float switch tail connected to the lower side of the float switch head in a vertically sliding manner, and the float switch tail is connected with a float of the float switch.

Further, be provided with sound wave level gauge mounting hole, float switch mounting hole and lid on the fuel tank lid and connect, sound wave level gauge mounting hole and float switch mounting hole are the through-hole, the lid connect with the oil storage chamber is linked together.

Further, the outside on the upper portion of the fuel tank body is provided with first box and connects, the outside of the lower part of the fuel tank body is provided with the second box and connects, the upper end of intercommunication formula level gauge be provided with the top connection that first box connects to each other, the lower tip of intercommunication formula level gauge be provided with the lower clutch that the second box connects to each other.

Further, the outside on the upper portion of the fuel tank body is provided with a third tank body joint, the outside of the lower portion of the fuel tank body is provided with a fourth tank body joint, the third tank body joint with the fourth tank body joint all with the oil storage chamber is linked together.

Further, the upper end of the fuel tank body is provided with an upper flange, and the edge of the fuel tank cover is provided with a plurality of connecting holes used for connecting with the upper flange.

The utility model realizes multiple-effect protection of fuel supply safety, solves the subsequent safety problem caused by failure of a certain link, improves the safety of engine hot test bench detection, protects the safety and health of workers, and provides reliable guarantee for the safe operation of a production line.

Drawings

FIG. 1 is a schematic diagram of a hot test fuel tank according to an embodiment;

FIG. 2 is a schematic structural view of an electronic level gauge as described in the detailed description;

FIG. 3 is a schematic structural view of a communication type liquid level gauge in an embodiment;

FIG. 4 is a schematic structural view of a fuel tank according to an embodiment;

FIG. 5 is a schematic structural view of a fuel cap according to an embodiment;

FIG. 6 is a schematic structural view of a float switch according to an embodiment;

FIG. 7 is a schematic diagram of the operation of the hot test fuel tank according to the embodiment.

In the figure: 1-fuel tank body; 11-side wall of the box body; 12-an upper flange; 13-first tank joint; 14-a second tank joint; 15-third tank connection; 16-fourth tank joint; 2-fuel tank cover; 21-a cover body; 22-connecting hole; 23-acoustic wave level gauge mounting holes; 24-a float switch mounting hole; 25-cover body joint; 3-a communicating level gauge; 31-upper joint; 32-lower joint; 33-visual tube; 34-liquid level ultrahigh mark; 35-liquid level ultra-low marking; 4-acoustic level gauge; 41-acoustic level gauge head; 42-a detection rod; 43-detection bit; 5, a float switch; 51-float switch head; 52-floating ball switch tail; 6-a first conduit; 7-a second conduit; 8-a third conduit; 91-oil supply valve; 92-a breather valve; 93-engine.

Detailed Description

The utility model will be further explained with reference to the drawings.

The thermal test fuel tank comprises a fuel tank cover 2 and a fuel tank body 1 with an opening at the upper end, wherein the fuel tank cover 2 closes the opening at the upper end of the fuel tank body 1, the fuel tank cover 2 and the fuel tank body 1 enclose a fuel storage cavity, a floating ball switch 5 and a sound wave liquid level meter 4 are installed on the fuel tank cover 2, a floating ball of the floating ball switch 5 is located in the fuel storage cavity, a detection rod 42 of the sound wave liquid level meter 4 extends into the fuel storage cavity, a communication type liquid level meter 3 is connected to the outer side of the fuel tank body 1, the upper end of the communication type liquid level meter 3 is communicated with the upper portion of the fuel storage cavity, the lower end of the communication type liquid level meter 3 is communicated with the lower portion of the fuel storage cavity, and a transparent visual pipe 33 is arranged in the middle of the communication type liquid level meter 3.

In this embodiment, the upper end portion of the visual tube 33 is provided with a liquid level ultra-high mark 34, and the lower end portion of the visual tube 33 is provided with a liquid level ultra-low mark 35. Utilize visual pipe 33 can judge the oil storage chamber liquid level condition through the eye measurement at any time, utilize liquid level superelevation sign 34 and liquid level superelevation sign 35 can judge fast whether oil storage chamber liquid level is normal.

In this embodiment, the acoustic level gauge 4 includes an acoustic level gauge head 41 supported on the upper side of the fuel tank cap 2. The acoustic wave level gauge head 41 is exposed for connection with signal lines.

In the present embodiment, the detection rod 42 of the acoustic wave level gauge 4 is provided with a plurality of detection sites 43 arranged at intervals in the up-down direction. The plurality of detection positions 43 can be set to an ultrahigh alarm liquid level, a normal working liquid level, a lower liquid level and an ultralow alarm liquid level from top to bottom.

In this embodiment, the float switch 5 includes a float switch head 51 supported on the upper side of the fuel tank cap 2 and a float switch tail 52 connected to the lower side of the float switch head 51 in a vertically slidable manner, and the float switch tail 52 is connected to the float of the float switch 5. The float switch head 51 is exposed, so that the displacement switch can be conveniently connected, and the signal intercommunication with the rack is realized.

In this embodiment, the fuel tank cover 2 includes a cover body 21 and a cover body joint 25 disposed on the cover body 21, the cover body 21 is provided with a sound wave level meter mounting hole 23 and a float switch mounting hole 24, the sound wave level meter mounting hole 23 and the float switch mounting hole 24 are through holes, and the cover body joint 25 is communicated with the oil storage cavity.

In the present embodiment, the fuel tank 1 includes a cylindrical tank sidewall 11, an upper flange 12 is provided at an upper end of the tank sidewall 11, and a plurality of connection holes 22 for connecting to the upper flange 12 are provided at an edge of the fuel tank cover 2.

In this embodiment, a first tank joint 13 is provided on the outer side of the upper portion of the tank side wall 11, a second tank joint 14 is provided on the outer side of the lower portion of the tank side wall 11, an upper joint 31 connected to the first tank joint 13 is provided on the upper end portion of the communication type level meter 3, and a lower joint 32 connected to the second tank joint 14 is provided on the lower end portion of the communication type level meter 3.

In this embodiment, a third tank joint 15 is provided on the outer side of the upper portion of the tank side wall 11, a fourth tank joint 16 is provided on the outer side of the lower portion of the tank side wall 11, and both the third tank joint 15 and the fourth tank joint 16 communicate with the oil storage chamber.

In this embodiment, a gasket, an adhesive tape, a waterproof paint, and the like may be provided at each of the mounting surfaces to be sealed, and a gasket may be provided between the acoustic liquid level meter 4 and the fuel tank cover 2 to achieve sealing, thereby preventing leakage.

As shown in fig. 7, when the hot-test fuel tank is in use, the cap connector 25 is connected to the breather valve 92 via the first pipe 6. The third box body joint 15 is connected with the oil supplementing valve 91 through the second pipeline 7, the oil supplementing valve 91 is opened, oil supply of the hot test fuel tank by the oil depot can be realized, and the oil supplementing valve 91 is closed, namely, the oil supply of the oil depot is cut off. The fourth tank joint 16 is connected to the engine 93 through the third pipe 8 and an oil pump to continuously supply oil to the engine 93 during the hot test and suck oil after the hot test is finished. Manually performing spot inspection on the first station in each shift to visually inspect the visible pipe 33, and judging the liquid level condition of the oil storage cavity through visual inspection; the sound wave liquid level meter 4 is used for second protection, detected signals are communicated with the rack according to the liquid level of the oil storage cavity, and the rack can normally perform the opening and closing functions of the oil replenishing valve 91; if the acoustic wave liquid level meter 4 fails, the floating ball switch 5 is protected for the third time, if the liquid level is ultrahigh, the floating ball floats upwards and triggers the displacement switch, signals of the displacement switch are communicated with the rack, and the rack can immediately execute the action of closing the oil supplementing valve 91; therefore, the problem that the fuel is excessively supplied through the oil supply valve 91 and the fuel finally overflows through the breather valve 92 in the fuel reservoir is prevented in multiple ways. The whole process is not only detected by an electronic element, but also controlled by a mechanical float switch 5, so that triple protection is provided for a bench test from the aspect of safety of fuel supply. The hot test fuel tank disclosed by the utility model has the advantages of simple structure, easiness in copying, reliable performance, strong practicability and high economical efficiency.

Claims

1. A hot-test fuel tank, characterized by: including fuel tank lid and upper end open-ended fuel tank body, the fuel tank lid seals the opening of fuel tank body upper end, fuel tank lid and fuel tank body enclose into the oil storage chamber, install float switch and sound wave level gauge on the fuel tank lid, the floater of float switch is located the oil storage intracavity, the measuring stick of sound wave level gauge stretches into in the oil storage chamber, the outside of the fuel tank body is connected with intercommunication formula level gauge, the upper end of intercommunication formula level gauge with the upper portion in oil storage chamber is linked together, the lower extreme of intercommunication formula level gauge with the lower part in oil storage chamber is linked together, the middle part of intercommunication formula level gauge is transparent visual pipe.

2. The thermal test fuel tank of claim 1, wherein: the upper end of the visual pipe is provided with a liquid level ultra-high mark, and the lower end of the visual pipe is provided with a liquid level ultra-low mark.

3. The thermal test fuel tank of claim 1, wherein: the acoustic level gauge includes an acoustic level gauge head supported on an upper side of the fuel tank cover.

4. The thermal test fuel tank of claim 1, wherein: and a plurality of detection positions which are arranged at intervals along the vertical direction are arranged on a detection rod of the acoustic wave liquid level meter.

5. The thermal test fuel tank of claim 1, wherein: the float switch comprises a float switch head supported on the upper side of the fuel tank cover and a float switch tail connected to the lower side of the float switch head in a vertically sliding manner, and the float switch tail is connected with a float of the float switch.

6. The thermal test fuel tank of claim 1, wherein: the fuel tank cover is provided with a sound wave liquid level meter mounting hole, a float switch mounting hole and a cover body joint, the sound wave liquid level meter mounting hole and the float switch mounting hole are through holes, and the cover body joint is communicated with the oil storage cavity.

7. The thermal test fuel tank of claim 1, wherein: the outside on the upper portion of the fuel tank body is provided with first box and connects, the outside of the lower part of the fuel tank body is provided with the second box and connects, the upper end of intercommunication formula level gauge be provided with the top connection that first box connects to each other, the lower tip of intercommunication formula level gauge be provided with the lower clutch that the second box connects to each other.

8. The thermal test fuel tank of claim 1, wherein: the outside on the upper portion of the fuel tank body is provided with a third tank body joint, the outside of the lower portion of the fuel tank body is provided with a fourth tank body joint, the third tank body joint with the fourth tank body joint all with the oil storage chamber is linked together.

9. The thermal test fuel tank of claim 1, wherein: the upper end of the fuel tank body is provided with an upper flange, and the edge of the fuel tank cover is provided with a plurality of connecting holes used for connecting with the upper flange.