CN217682048U - Common rail pipe and leakage alarm system - Google Patents

Abstract

The utility model discloses a common rail pipe and leakage alarm system relates to common rail equipment technical field, has solved current common rail pipe concealed installation difficulty, and can't prevent the problem of leakage during concealed installation, has improved the adaptability of common rail pipe, and the concrete scheme is as follows: the rail comprises a rail body, wherein a plurality of rail fixing supports and a first oil pipe connecting frame are fixedly arranged on the rail body along the axial direction of the rail body, one end of the rail body is sleeved with a second oil pipe connecting frame, threaded holes are formed in the rail fixing supports, the first oil pipe connecting frame and the second oil pipe connecting frame, and the threaded holes in the first oil pipe connecting frame and the second oil pipe connecting frame are communicated with an oil storage channel in the rail body; the anti-leakage space for containing leaked oil is arranged between the second oil pipe connecting frame and the rail body, one end, close to the first oil pipe connecting frame, of the second oil pipe connecting frame is connected with the communicating pipe, the other end of the second oil pipe connecting frame is plugged through the end cover, the communicating pipe is matched with the outer wall of the rail body to form a circulation channel, and the circulation channel is communicated with the anti-leakage space.

Description

Common rail pipe and leakage alarm system

Technical Field

The utility model belongs to the technical field of common rail equipment technique and specifically relates to a common rail pipe and leakage alarm system.

Background

With the continuous improvement of the requirements of compactness and appearance of the engine, when the engine is arranged, on the premise of meeting the normal use function of the engine, the common rail pipe is designed to be hidden by taking the adjacent part cavities into consideration, so that the aim of beautifying the appearance is fulfilled.

The inventor finds that the existing double-layer common rail pipe cannot be installed and used in small space scenes such as a cavity due to the influence of the size of the pipe, and the single-layer common rail pipe is limited by the installation mode of the pipe, for example, the pipe is installed by utilizing a fixing hole of the common rail pipe, is limited by the manufacturing process and cannot meet the use requirement of the large-size common rail pipe (shown in figure 1); the mode of fixing the pipe clamp to the corresponding part (as shown in figure 2) is difficult to install in the use scene of the cavity, and the single-layer common rail pipe does not have the leakage-proof capability per se, so that the single-layer common rail pipe cannot have good emergency capability for high-pressure oil leakage.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a be not enough to prior art existence, the utility model aims at providing a common rail pipe and leakage alarm system has set up a plurality of rail fixed bolsters on the rail body, the fixed mounting who realizes common rail pipe through the screw-thread fit of rail fixed bolster and cavity internal bolt, and simultaneously, utilize length weak point in the communicating pipe of the rail body with the outside high pressure fuel pipe linking bridge intercommunication of rail body and cavity, have the emergent ability of two-way leakage, current common rail pipe concealed installation difficulty has been solved, and can't prevent the problem of leakage during concealed installation.

In order to achieve the above purpose, the present invention is realized by the following technical solution:

in a first aspect, an embodiment of the utility model provides a common rail pipe, which comprises a rail body, wherein a plurality of rail fixing supports and a first oil pipe connecting frame are fixedly arranged on the rail body along the axial direction of the rail body, a second oil pipe connecting frame is sleeved at one end of the rail body, threaded holes are respectively arranged on the rail fixing supports, the first oil pipe connecting frame and the second oil pipe connecting frame, and the threaded holes on the first oil pipe connecting frame and the second oil pipe connecting frame are respectively communicated with an oil storage channel in the rail body;

the anti-leakage space for containing leaked oil is arranged between the second oil pipe connecting frame and the rail body, one end, close to the first oil pipe connecting frame, of the second oil pipe connecting frame is connected with the communicating pipe, the other end of the second oil pipe connecting frame is plugged through the end cover, the communicating pipe is matched with the outer wall of the rail body to form a circulation channel, and the circulation channel is communicated with the anti-leakage space.

As a further implementation manner, the rail fixing supports and the first oil pipe connecting frames are sequentially and alternately distributed at intervals along the axial direction of the rail body.

As a further implementation mode, the communicating pipe is sleeved on the rail body and is limited by the aid of the two retaining rings, the two retaining rings are fixedly arranged on the rail body, the communicating pipe is located between the two retaining rings, and the retaining rings are in clearance fit with the end portions of the communicating pipe.

As a further implementation mode, the oil hole which is communicated with the threaded hole of the second oil pipe connecting frame on the rail body is also communicated with the leakage-proof space.

As a further implementation manner, the communicating pipe is sealed with the second oil pipe connecting frame, one end of the communicating pipe, which is far away from the second oil pipe connecting frame, is sleeved with a cover plate, and the cover plate is fixedly connected with the communicating pipe.

As a further implementation manner, the cover plate is sealed with the outer wall of the communicating pipe by using a sealing ring, and the sealing ring is also arranged on one side of the cover plate, which is far away from the second oil pipe connecting frame.

As a further implementation mode, the inner diameter of the communicating pipe is the same as the outer diameter of the rail body, a plurality of grooves are formed in the inner side wall of the communicating pipe at intervals along the circumferential direction of the communicating pipe, and the grooves extend along the axial direction of the communicating pipe.

As a further implementation mode, one end of the rail body is closed, the other end of the rail body is provided with an opening, and the opening is sealed by a plug.

In a second aspect, another embodiment of the present invention provides a leakage alarm system, which utilizes the common rail pipe, including a flow guide pipe and a fuel leakage alarm, wherein the common rail pipe is fixed in the cavity by a rail fixing bracket, one end of the common rail pipe, which is provided with a second oil pipe connecting frame, extends out of the cavity, one end of the flow guide pipe is communicated with the cavity, and the other end of the flow guide pipe is connected with the fuel leakage alarm;

or one end of the flow guide pipe is communicated with the leakage-proof space, and the other end of the flow guide pipe is connected with the fuel leakage alarm.

As a further implementation manner, the flow guide pipe is arranged at the bottom of the cavity;

or the guide pipe is arranged at the bottom of the leakage-proof space.

Above-mentioned the utility model has the advantages as follows:

1) The utility model discloses set up a plurality of rail fixed bolsters on the rail body, the screw-thread fit of bolt realizes the fixed mounting of rail pipe altogether in accessible rail fixed bolster and the cavity, simultaneously, utilize communicating pipe on the rail body will be located the inside oil pipe linking bridge of cavity and the outside oil pipe linking bridge intercommunication that is located the cavity, contain the circulation passageway between communicating pipe and the rail body, have the emergent ability of two-way leakage, can leak monitoring to the inside and outside oil pipe linking bridge of cavity.

2) The utility model discloses the both ends of communicating pipe have set up the retaining ring, and clearance fit between retaining ring and the communicating pipe not only can restrict the axial motion of communicating pipe, has still avoided the jam to the intraductal circulation passageway of communicating pipe, has guaranteed to leak effective going on of water conservancy diversion work.

3) The utility model discloses communicating pipe has the emergent ability of two-way leakage, and the honeycomb duct among the leakage alarm system can select the mounted position according to actual installation space, has improved leakage alarm system's adaptability greatly.

Drawings

The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention.

FIG. 1 is a schematic view of a prior art fixing hole fixed common rail pipe;

fig. 2 is a schematic structural view of a pipe clamp fixing common rail pipe in the background art;

fig. 3 is a schematic diagram of the overall structure of a common rail pipe according to one or more embodiments of the present invention;

fig. 4 is a schematic cross-sectional view of a common rail tube according to one or more embodiments of the present disclosure;

fig. 5 is a schematic front view of a communication pipe according to one or more embodiments of the present invention;

FIG. 6 is a schematic cross-sectional view of the structure shown in FIG. 5;

fig. 7 is a schematic side view of a communication tube according to one or more embodiments of the present invention;

in the figure: the mutual spacing or size is exaggerated to show the position of each part, and the schematic diagram is only used for illustration;

wherein, 1, a rail body; 2. fixing the bolt; 3. a rail fixing bracket; 4. a set screw; 5. a first oil pipe connecting frame; 6. a retainer ring; 7. a first seal ring; 8. a second seal ring; 9. a communicating pipe; 10. a second oil pipe connecting frame; 11. a third seal ring; 12. plugging by screwing; 13. an end cap; 14. A cover plate; 15. an oil storage passage; 16. a cavity.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Just as the background art introduces, current double-deck common rail pipe receives the size influence can't install in the cavity, and the individual layer common rail pipe receives the restriction of mounting means, though can use in the cavity, nevertheless installs and uses the difficulty, and the individual layer common rail pipe does not have the problem of preventing the leakage function, for solving above-mentioned problem, the utility model provides a common rail pipe and leakage alarm system.

Example 1

The utility model discloses an among the typical embodiment, as shown in fig. 3-7, a common rail pipe is proposed, constitute including the rail body 1, rail fixed bolster 3, first oil pipe link 5, communicating pipe 9, second oil pipe link 10, plug 12, end cover 13 and apron 14.

Wherein, rail fixed bolster 3 and first oil pipe link 5 all are equipped with a plurality of, and a plurality of rail fixed bolster 3 and the fixed setting of the first oil pipe link 5 of a plurality of are on the rail body 1, and rail fixed bolster 3 and first oil pipe link 5 are along the axial of the rail body 1 interval distribution in turn.

Specifically, a first oil pipe connecting frame 5 is arranged between every two adjacent rail fixing supports 3, and it can also be understood that a rail fixing support 3 is arranged between every two adjacent first oil pipe connecting frames 5.

The rail fixing support 3 is of a block structure, a first through hole is formed in the side portion of the rail fixing support 3, the first through hole penetrates through the main body of the rail fixing support 3 from the side portion, the diameter of the first through hole is the same as the outer diameter of the rail body 1, and the rail fixing support 3 can be sleeved on the rail body 1 through the first through hole and fixed on the rail body 1 through a fixing bolt 2;

still be equipped with first screw hole on the rail fixed bolster 3, first screw hole and first through-hole mutually perpendicular, when carrying out the installation of rail fixed bolster 3, the direction of first through-hole is the same with the axial of the rail body 1, and the direction of first screw hole is the same with the radial of the rail body 1, and first screw hole can cooperate with the bolt on the cavity, with the bolt fixed connection in rail fixed bolster 3 and the cavity 16, and then realize the fixed mounting of common rail pipe in cavity 16.

The first oil pipe connecting frame 5 is also of a block structure, a second through hole is formed in the side portion of the first oil pipe connecting frame 5 and penetrates through the main body of the first oil pipe connecting frame 5 from the side portion, the diameter of the second through hole is the same as the outer diameter of the rail body 1, and the first oil pipe connecting frame 5 can be sleeved on the rail body 1 through the second through hole and fixed on the rail body 1 through a positioning screw 4;

still be equipped with the second screw hole on the first oil pipe link 5, second screw hole and second through-hole mutually perpendicular, and the second screw hole sets up, and when carrying out the installation of first oil pipe link 5, the direction of second through-hole is the same with the axial of the rail body 1, and the direction of second screw hole is the same with the radial of the rail body 1, second screw hole mainly used and high-pressure fuel pipe threaded connection.

Because the rail fixing support 3 and the first oil pipe connecting frame 5 are both sleeved on the rail body 1, the rail fixing support 3 and the first oil pipe connecting frame 5 can be adjusted on the rail body 1 along the axial direction and the radial direction of the rail body 1, and the adaptability of the common rail pipe is greatly improved.

It should be noted that the threaded holes on the rail body 1, which are matched with the fixing bolts 2 and the positioning screws 4, are formed on site in the installation process, so that the requirements of position adjustment and fixation of the rail fixing support 3 and the first oil pipe connecting frame 5 are met.

A plurality of oil holes are radially formed in the rail body 1 along the rail body, one end of each oil hole is communicated with the oil storage channel 15, the other end of each oil hole is communicated with a corresponding second threaded hole, the high-pressure oil pipe is of a structure with an external thread on the side wall and the same shape as the oil holes, the high-pressure oil pipe is fixed by matching the external thread with the second threaded holes, the end of each high-pressure oil pipe is inserted into the corresponding oil hole, and high-pressure oil in the oil storage channel 15 enters the high-pressure oil pipe connected with the first oil pipe connecting frame 5 through the oil holes.

It can be understood that, because the position of the first oil pipe connecting frame 5 is adjusted on site, and the position of the second threaded hole is not fixed, the oil hole on the rail body 1 is also opened on site, so as to ensure that the second threaded hole is reliably communicated with the oil hole.

In actual installation, one end of the rail body 1, which is located in the cavity 16, is of a closed structure, the rail fixing support 3 and the first oil pipe connecting frame 5 are arranged at one section of the rail body 1, which is located in the cavity 16, one end of the rail body 1, which extends out of the cavity 16, is provided with an opening, and one end of the rail body 1, which is provided with the opening, is fixedly provided with the second oil pipe connecting frame 10.

A third through hole is formed in the side portion of the second oil pipe connecting frame 10, the third through hole penetrates through the main body of the second oil pipe connecting frame 10 from the side portion, the diameter of the third through hole is larger than the outer diameter of the rail body 1, the second oil pipe connecting frame 10 can be sleeved on the rail body 1 through the third through hole, the second oil pipe connecting frame 10 is in clearance fit with the outer wall of the rail body 1, a space allowing high-pressure oil to flow is formed between the second oil pipe connecting frame 10 and the outer wall of the rail body 1, and the space is called a leakage-proof space for convenience of description;

the second oil pipe connecting frame 10 is further provided with a third threaded hole, the third threaded hole and the third threaded hole are perpendicular to each other and communicated, when the second oil pipe connecting frame 10 is installed, the direction of the third threaded hole is the same as the axial direction of the rail body 1, the direction of the third threaded hole is the same as the radial direction of the rail body 1, and the third threaded hole is mainly used for being in threaded connection with a high-pressure oil pipe.

The oilhole has been seted up equally to the position department that second oil pipe link 10 was installed to rail body 1, oilhole one end and oil storage way 15 intercommunication, the other end and third screw hole intercommunication, and this oilhole still communicates with leak protection space, high pressure fuel pipe has the external screw thread for the lateral wall, the structure that tip and oilhole shape are the same, high pressure fuel pipe passes through the external screw thread and realizes fixedly with the cooperation of third screw hole, high pressure fuel pipe's tip inserts in the oilhole, it goes into through high pressure fuel pipe pump to be located the outside high pressure oil source of cavity 16, and then get into in the oil storage way 15, if oilhole department appears leaking, high pressure fuel can get into in the leak protection space.

As shown in fig. 5, communicating pipe 9 is the body structure that the middle part external diameter is greater than the both ends external diameter, the length of communicating pipe 9 is less than the length of the rail body 1, communicating pipe 9 cup joints on the rail body 1 equally, and be close to second oil pipe link 10, the one end of communicating pipe 9 stretches into in the cavity 16, the other end stretches into in the second oil pipe link 10 and through mode and the 10 fixed connection of second oil pipe link of bolt fastening, and utilize the sealing washer to seal between the outer wall of communicating pipe 9 and the inner wall of second oil pipe link 10, thereby utilize communicating pipe 9 to communicate leak protection space and cavity 16.

As shown in fig. 6-7, the inner diameter of the communication pipe 9 is the same as the outer diameter of the rail body 1, a plurality of grooves are circumferentially spaced on the inner side wall of the communication pipe 9, the grooves extend along the axial direction of the communication pipe 9, and after the communication pipe 9 is sleeved on the rail body 1, the grooves can be matched with the outer wall of the rail body 1 to form a circulation channel, so that the leakage-proof space can be communicated with the cavity 16 through the circulation channel.

When the single-layer common rail pipe is used, when oil leakage occurs at the oil hole of the second oil pipe connecting frame 10, leaked high-pressure oil can enter the leakage-proof space and then flows into the cavity 16 through the circulation channel in the communicating pipe 9, and finally is timely drained to the fuel leakage alarm through the pipeline connected with the bottom of the cavity 16 to give an alarm, so that the single-layer common rail pipe has the function of a double-layer common rail pipe.

It can be understood that the draft tube 9 has a two-way flow function, and high-pressure oil leaking from the cavity 16 can also enter the leak-proof space between the second oil pipe connecting frame 10 and the rail body 1.

The rail body 1 has the open-ended tip and is equipped with the internal thread, and through plug 12 with the opening shutoff, the gap between the one end of second oil pipe link 10 and the rail body 1 carries out the shutoff through communicating pipe 9, and the second oil pipe link 10 other end and 13 screw-thread fit of end cover to carry out the shutoff to the tip of second oil pipe link 10, seal through third sealing washer 11 between end cover 13 and the second oil pipe link 10.

One end of the communicating pipe 9 close to the cavity 16 is sleeved with a cover plate 14, the inner diameter of the cover plate 14 is the same as the outer diameter of the end part of the communicating pipe 9, the cover plate 14 is fixedly connected with the communicating pipe 9, the cover plate 14 and the outer wall of the communicating pipe 9 are sealed through a second sealing ring 8, one side of the cover plate 14 far away from the second oil pipe connecting frame 10 is fixedly provided with a first sealing ring 7, namely, the cover plate 14 and the outer wall of the cavity 16 are sealed through the first sealing ring 7, and the outer wall of the communicating pipe 9 and the second oil pipe connecting frame 10 are also sealed through the second sealing ring 8, so that a sealed cavity is formed, and leakage of high-pressure oil of flow guiding is avoided.

The rail body 1 is further fixedly provided with two retaining rings 6, the two retaining rings 6 are arranged oppositely, the communicating pipe 9 is located between the two retaining rings 6 and used for limiting the axial movement of the communicating pipe 9, and a set gap is formed between the retaining ring 6 and the end part of the adjacent communicating pipe 9 so as to prevent the working of the circulating channel from being influenced.

Example 2

The utility model discloses an in another typical embodiment, a leakage alarm system is proposed, utilized and implemented 1 in common rail pipe, common rail pipe is equipped with the position of first oil pipe link 5 and passes through rail fixed bolster 3 and the fixed setting of cooperation of bolt in cavity 16, common rail pipe is equipped with the one end of second oil pipe link 10 and stretches out cavity 16, first oil pipe link 5 and second oil pipe link 10 all are connected with high pressure fuel pipe, wherein, second oil pipe link 10 is used for the pump to go into high pressure oil, first oil pipe link 5 is used for discharging high pressure oil.

Including honeycomb duct and fuel leakage alarm, wherein, the fixed below that sets up at cavity 16 of honeycomb duct, the one end and the cavity 16 intercommunication of honeycomb duct, the other end and fuel leakage alarm intercommunication, when second oil pipe link 10 department appears leaking, high-pressure oil accessible communicating pipe 9 flows into cavity 16 and then the water conservancy diversion realizes reporting to the police to fuel leakage alarm.

It will be appreciated that when a leak occurs at the first fuel line connection bracket 5, it will also flow under the draft tube into the fuel leak alarm.

In other embodiments, the flow guide pipe may also be disposed at the bottom of the second oil pipe connecting frame 10 and is communicated with the leakage-proof space, and at this time, when the second oil pipe connecting frame 10 leaks, the fluid can directly flow into the flow guide pipe; when the first oil pipe connecting frame 10 leaks, the first oil pipe connecting frame can flow into the leakage-proof space through the action of the communicating pipe 9 and then enter the flow guide pipe.

Because the communicating pipe 9 has the function of bidirectional diversion, the arrangement position of the diversion pipe can be selected according to the limitation of the actual installation space, and the adaptability of the common rail pipe is greatly improved.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A common rail pipe is characterized by comprising a rail body, wherein a plurality of rail fixing supports and a first oil pipe connecting frame are fixedly arranged on the rail body along the axial direction of the rail body, one end of the rail body is sleeved with a second oil pipe connecting frame, threaded holes are formed in the rail fixing supports, the first oil pipe connecting frame and the second oil pipe connecting frame, and the threaded holes in the first oil pipe connecting frame and the second oil pipe connecting frame are communicated with an oil storage channel in the rail body;

the anti-leakage space for containing leaked oil is arranged between the second oil pipe connecting frame and the rail body, one end, close to the first oil pipe connecting frame, of the second oil pipe connecting frame is connected with the communicating pipe, the other end of the second oil pipe connecting frame is blocked by the end cover, the communicating pipe is matched with the outer wall of the rail body to form a circulation channel, and the circulation channel is communicated with the anti-leakage space.

2. A common rail pipe according to claim 1, wherein the rail fixing brackets and the first oil pipe connecting brackets are alternately arranged along the axial direction of the rail body.

3. The common rail pipe according to claim 1, wherein the communicating pipe is sleeved on the rail body and limited by two retaining rings, the two retaining rings are fixedly arranged on the rail body, the communicating pipe is positioned between the two retaining rings, and the retaining rings are in clearance fit with the end parts of the communicating pipe.

4. The common rail pipe according to claim 1, wherein the oil hole of the rail body communicating with the threaded hole of the second oil pipe connecting frame is further communicated with a leakage-proof space.

5. The common rail pipe according to claim 1, wherein the communicating pipe is sealed with the second oil pipe connecting frame, and a cover plate is sleeved on one end of the communicating pipe away from the second oil pipe connecting frame and fixedly connected with the communicating pipe.

6. The common rail pipe according to claim 5, wherein the cover plate is sealed with the outer wall of the communicating pipe by a sealing ring, and the side of the cover plate away from the second oil pipe connecting frame is also provided with the sealing ring.

7. A common rail pipe according to claim 1, wherein the inner diameter of the communicating pipe is the same as the outer diameter of the rail body, and a plurality of grooves are formed in the inner side wall of the communicating pipe at intervals along the circumferential direction of the communicating pipe, and the grooves extend in the axial direction of the communicating pipe.

8. A common rail pipe according to claim 1, wherein the rail body is closed at one end and has an opening at the other end, the opening being closed by a plug.

9. A leakage alarm system utilizes the common rail pipe according to any one of claims 1 to 8, and is characterized by comprising a guide pipe and a fuel leakage alarm, wherein the common rail pipe is fixedly arranged in the cavity by utilizing a rail fixing bracket, one end of the common rail pipe provided with a second oil pipe connecting frame extends out of the cavity, one end of the guide pipe is communicated with the cavity, and the other end of the guide pipe is connected with the fuel leakage alarm;

or one end of the flow guide pipe is communicated with the leakage-proof space, and the other end of the flow guide pipe is connected with the fuel leakage alarm.

10. A leak warning system according to claim 9, wherein the flow conduit is disposed at the bottom of the cavity;

or the guide pipe is arranged at the bottom of the leakage-proof space.

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