Telescopic cooling water pipe and engine cooling system

Abstract

A telescopic cooling water pipe and an engine cooling system comprise a first pipe section and a second pipe section, one end of the first pipe section is inserted into the second pipe section in a sliding mode, the first pipe section is sleeved with a plurality of first sealing rings, the first sealing rings are located in the second pipe section, and the other end of the first pipe section extends outwards and is sleeved with a second sealing ring; the end, away from the first pipe section, of the second pipe section is sleeved with a ferrule, a clamping spring is installed at the position, close to the second pipe section, of the first pipe section, the clamping spring is located outside the second pipe section, and the first pipe section and the second pipe section can slide relatively so as to change the overall length of the cooling water pipe. The engine is not required to be integrally disassembled, the cooling water pipe is not required to be cut, the influence of small space of an engine cabin is avoided, the use is convenient, the cooling water pipe of the engine can be replaced in a limited space, and the maintenance cost and the maintenance time are greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile engines, in particular to a telescopic cooling water pipe and an engine cooling system. Background Art

[0002] The engine is the core power device in the car. It generates a lot of heat when working, so it needs to be matched with a cooling system to cool down. The cooling system of the car engine plays a vital role in the car power system. The engine generates a lot of heat during the work process. In order to keep the engine running normally and keep the engine components at normal working temperature, the engine needs to be cooled. The cooling system has a cooling water pipe, which is one of the important structures to maintain the operation of the engine cooling system.

[0003] For processing technology and performance considerations, existing engine cooling water pipes are mostly made of cast aluminum pipes or steel pipes. In automobile engines, especially inline six-cylinder engines, in order to reduce the impact of high temperature inside the engine, ensure smooth flow of coolant and reduce the space occupied inside the engine, the water pump and the water jacket are connected by a metal straight pipe.

[0004] However, due to the small operating space inside the engine, when installing or disassembling the cooling water pipe, especially when replacing and repairing the cooling water pipe, since the cooling water pipe is a metal pipe, it needs to be cut before it can be disassembled and taken out, and the operating space inside the engine is small and inconvenient to operate. The cooling water pipe needs to be disassembled as a whole before it can be disassembled, assembled, or replaced, which takes a long time and is difficult to operate. Utility Model Content

[0005] In order to solve the technical problem in the above background technology that the cooling water pipe in the existing engine is a straight metal pipe, which is not convenient to disassemble and replace, and has a long maintenance time and great difficulty, the utility model provides a retractable cooling water pipe and an engine cooling system.

[0006] The technical solution of this utility model is as follows:

[0007] The utility model provides a telescopic cooling water pipe, comprising: a first pipe section and a second pipe section, one end of the first pipe section is slidably inserted in the second pipe section, a plurality of first sealing rings are sleeved on the first pipe section, the first sealing rings are located in the second pipe section, and the connection sealing between the first pipe section and the second pipe section is effectively guaranteed, the other end of the first pipe section extends outward and is sleeved with the second sealing ring, and the sealing when the first pipe section is connected to the water pump is guaranteed, the end of the second pipe section away from the first pipe section is sleeved with a ferrule, a retaining spring is installed at a position close to the second pipe section on the first pipe section, and the retaining spring is located in the second pipe section. The outside of the pipe section has a non-closed ring body, which can effectively limit the relative position between the first pipe section and the second pipe section through the retaining spring to prevent the first pipe section from axially moving under the pressure of the coolant. The first pipe section and the second pipe section can slide relative to each other to change the overall length of the cooling water pipe. When replacing and repairing the automobile cooling water pipe, there is no need to remove the engine as a whole, and there is no need to cut the cooling water pipe. It is not affected by the small space in the engine compartment and is easy to use. The engine cooling water pipe can be replaced in a limited space, which greatly reduces the maintenance cost and maintenance time.

[0008] Preferably, the part of the first pipe section that is inserted into the second pipe section in the working state is an insertion part, and the insertion part is provided with a first mounting groove, a second mounting groove and a third mounting groove at intervals along its axial direction, and the first sealing ring is correspondingly installed in the first mounting groove, the second mounting groove and the third mounting groove, and a fifth mounting groove is opened at one end of the first pipe section away from the second pipe section, and the second sealing ring is installed in the fifth mounting groove, which is convenient for the installation and positioning of the sealing ring.

[0009] Preferably, a fourth mounting slot is provided between the third mounting slot and the fifth mounting slot, the fourth mounting slot is close to the third mounting slot, and a retaining spring and a gasket are installed in the fourth mounting slot to facilitate the installation and limiting of the retaining spring and the gasket.

[0010] Preferably, the second pipe section includes a coaxially arranged reduced diameter section and a straight-through section, the reduced diameter section is connected to the interior of the straight-through section, the outer diameter and inner diameter of the reduced diameter section are smaller than the straight-through section, the ring is sleeved on the reduced diameter section, and the insertion part is inserted in the straight-through section.

[0011] Preferably, the inner diameter of the straight section is not less than the outer diameter of the insertion part, the length of the straight section is greater than the length of the insertion part, and the inner diameter of the reduced diameter section is smaller than the outer diameter of the insertion part, which can effectively limit the length of the first pipe section inserted into the second pipe section.

[0012] Preferably, the ring includes a connected flat end and a bevel end, the interior of the flat end is a circular through hole of full diameter, the bevel end is a variable diameter through hole, the outer diameter of the reduced diameter section is larger than the minimum inner diameter of the bevel end, and the outer diameter of the reduced diameter section is smaller than the maximum inner diameter of the bevel end, and the bevel can be used to improve the sealing between the reduced diameter section and the bevel end. The setting of the ring can be used to increase the outer diameter of the reduced diameter section, facilitate the connection between the reduced diameter section and the engine water channel mounting hole, and at the same time, improve the sealing between the reduced diameter section and the engine water channel mounting hole.

[0013] The utility model provides an engine cooling system, which adopts a telescopic cooling water pipe and comprises a water jacket and a water pump. Both ends of the telescopic cooling water pipe are respectively connected with the water jacket and the water pump.

[0014] Preferably, one end of the first pipe section is connected to the water pump, and the other end of the first pipe section is slidably inserted into the straight section of the second pipe section. The reduced diameter section of the second pipe section is provided with a ferrule, and the reduced diameter section is connected to the water jacket.

[0015] It can be seen from the above technical solutions that the advantages of the utility model are:

[0016] 1. The first pipe section and the second pipe section can slide relative to each other to change the overall length of the cooling water pipe. When replacing and repairing the automobile cooling water pipe, there is no need to dismantle the engine as a whole, and there is no need to cut the cooling water pipe. It is not affected by the small space in the engine compartment and is easy to use. The engine cooling water pipe can be replaced in a limited space, which greatly reduces the maintenance cost and maintenance time. The setting of the retaining spring facilitates the adjustment of the length of the cooling water pipe, effectively limits the relative position between the first pipe section and the second pipe section, and avoids the axial movement of the first pipe section under the pressure of the coolant during work.

[0017] 2. The length of the straight section is greater than the length of the insertion section, and the inner diameter of the reduced diameter section is smaller than the outer diameter of the insertion section, which can effectively limit the length of the first pipe section inserted into the second pipe section.

[0018] 3. The setting of the ferrule can be used to increase the outer diameter of the reduced diameter section, which is convenient for the connection between the reduced diameter section and the engine water channel mounting hole, and at the same time, improves the sealing between the reduced diameter section and the engine water channel mounting hole. The outer diameter of the reduced diameter section is larger than the minimum inner diameter of the bevel end and smaller than the maximum inner diameter of the bevel end. The bevel can be used to improve the sealing between the reduced diameter section and the bevel end. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the utility model, the drawings required for use in the description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a schematic diagram of the explosion structure of a cooling water pipe according to one or more embodiments of the present invention;

[0021] Figure 2 This is a schematic structural diagram of a first pipe section according to one or more embodiments of the present invention;

[0022] Figure 3 It is a schematic structural diagram of the second pipe section according to one or more embodiments of the present invention;

[0023] Figure 4 It is a schematic structural diagram of a ferrule according to one or more embodiments of the utility model;

[0024] Figure 5 for Figure 4 AA cross-sectional structural diagram of the structure shown;

[0025] Figure 6 This is a schematic diagram of the application of the cooling water pipe in the engine (exploded diagram);

[0026] The components represented by the reference numerals in the figure are:

[0027] 1. First pipe section; 11. First mounting slot; 12. Second mounting slot; 13. Third mounting slot; 14. Fourth mounting slot; 15. Fifth mounting slot;

[0028] 2. Second pipe section; 21. Neck section; 22. Straight section;

[0029] 3. Ferrule; 31. Flat end; 32. Bevel end;

[0030] 4. First sealing ring; 5. Second sealing ring; 6. Circlip; 7. Gasket; 8. Retractable cooling water pipe. DETAILED DESCRIPTION

[0031] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical scheme of the utility model will be clearly and completely described below in combination with the drawings in the specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the utility model, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0032] Example 1

[0033] In a typical implementation of the present invention, Figure 1-Figure 5As shown, a retractable cooling water pipe is proposed, comprising: a first pipe section 1, a second pipe section 2 and a ferrule 3, the first pipe section 1 and the second pipe section 2 are both made of metal, one end of the first pipe section 1 is inserted in the second pipe section 2, and the part of the first pipe section 1 inserted in the second pipe section 2 can move in the second pipe section 2 along the axial direction of the second pipe section 2, a plurality of sealing rings are provided on the part of the first pipe section 1 inserted in the second pipe section 2 to ensure the sealing of the connection between the first pipe section 1 and the second pipe section 2, one end of the first pipe section 1 away from the second pipe section 2 extends outward from the second pipe section 2 and is installed with a sealing ring for connection with the front water channel mounting hole of the engine, one end of the second pipe section 2 away from the first pipe section 1 is installed with the ferrule 3, and is installed in the rear water channel mounting hole of the engine through the ferrule 3;

[0034] A retaining spring 6 is also installed on the first pipe section 1 near the second pipe section 2. The retaining spring 6 is located outside the second pipe section 2 and is an unclosed ring. When the cooling water pipe is working, the retaining spring 6 can limit the relative position between the first pipe section 1 and the second pipe section 2 to prevent the first pipe section 1 from axial movement due to the coolant pressure. When the cooling water pipe needs to be disassembled and repaired, the retaining spring 6 can be removed, so that the first pipe section 1 and the second pipe section 2 can slide relative to each other, thereby reducing the overall length of the cooling water pipe. Similarly, when installing the cooling water pipe, the overall length is shortened first, and then the cooling water pipe is extended after being placed in the engine. After the two ends of the cooling water pipe are fixed, the retaining spring 6 is installed to limit its overall length. When removing or installing the cooling water pipe, there is no need to cut the cooling water pipe or remove the engine. The cooling water pipe can be quickly removed or installed by removing the valve cover, which is convenient for use.

[0035] It should be noted that the front and rear sides described in this embodiment are based on the engine head direction as the front side and the cab direction as the rear side as reference. In actual applications, other directions can also be used as long as the two water channel mounting holes of the engine are connected by cooling water pipes.

[0036] like Figure 2 As shown, the first pipe section 1 is provided with a plurality of mounting grooves along its axial direction, namely, a first mounting groove 11, a second mounting groove 12, a third mounting groove 13, a fourth mounting groove 14 and a fifth mounting groove 15, wherein the first mounting groove 11, the second mounting groove 12 and the third mounting groove 13 are located on the portion of the first pipe section 1 inserted into the second pipe section 2 in the working state (referred to as the insertion portion in this embodiment), the first mounting groove 11, the second mounting groove 12 and the third mounting groove 13 are arranged at intervals along the axial direction on the insertion portion, and a first sealing ring 4 is respectively installed on the first mounting groove 11, the second mounting groove 12 and the second mounting groove 13, so as to improve the sealing between the first pipe section 1 and the second pipe section 2 through three first sealing rings 4 arranged at intervals;

[0037] The fifth mounting groove 15 is opened at one end of the first pipe section 1 away from the second pipe section 2. A second sealing ring 5 is installed on the fifth mounting groove 15. The diameter of the second sealing ring 5 is larger than that of the first sealing ring 4. The second sealing ring 5 is used to ensure the connection sealing between the first pipe section 1 and the engine water channel mounting hole; the fourth mounting groove 14 is located between the third mounting groove 13 and the fifth mounting groove 15, and the fourth mounting groove 14 is close to the third mounting groove 13. The fourth mounting groove 14 is used for the installation of the retaining spring 6 and the gasket 7. Two gaskets 7 are provided and distributed on both sides of the retaining spring 6. The retaining spring 6 is used to limit the relative sliding between the first pipe section 1 and the second pipe section 2, so as to avoid axial movement of the first pipe section 1 caused by the coolant pressure during operation.

[0038] It should be noted that, in actual use, the flow direction of the coolant should be from the first pipe section 1 to the second pipe section 2 to ensure the limiting effect of the retaining spring 6 .

[0039] like Figure 3 As shown, the second pipe section 2 includes a reduced diameter section 21 and a straight-through section 22, wherein the reduced diameter section 21 is coaxially arranged with the straight-through section 22, and the reduced diameter section 21 is connected to the inside of the straight-through section 22, and the outer diameter and inner diameter of the reduced diameter section 21 are both smaller than those of the straight-through section 22, the reduced diameter section 21 is used to connect with the engine water channel mounting hole, and the straight-through section 22 is used to be inserted between the insertion part of the first pipe section 1.

[0040] The inner diameter of the straight section 22 is not less than the outer diameter of the insertion portion of the first pipe section 1, and the length of the straight section 22 is greater than the length of the insertion portion of the first pipe section 1, thereby allowing the insertion portion and other parts of the first pipe section 1 to be inserted into the second pipe section 2; the inner diameter of the reduced diameter section 21 is smaller than the outer diameter of the insertion portion of the first pipe section 1, thereby limiting the insertion depth of the first pipe section 1.

[0041] A rubber ring 3 is sleeved on the reduced diameter section 21 to increase the outer diameter of the reduced diameter section 21, facilitate the connection between the reduced diameter section 21 and the engine waterway mounting hole, and at the same time, improve the sealing between the reduced diameter section 21 and the engine waterway mounting hole. Figure 4-Figure 5 As shown, the ring 3 includes a plane end 31 and a bevel end 32, the interior of the plane end 31 is connected with the interior of the bevel end 32, wherein the interior of the plane end 31 is a circular through hole of full diameter, the bevel end 32 is a variable diameter through hole, the inner wall of the bevel end 32 is a bevel, the inner diameter of the bevel end 32 away from the plane end 31 is larger than the inner diameter of the other end, and the minimum inner diameter of the bevel end 32 is the same as the inner diameter of the plane end 31, the outer diameter of the reduced diameter section 21 is larger than the minimum inner diameter of the bevel end 32 and smaller than the maximum inner diameter of the bevel end 32, so that the bevel can be used to improve the sealing between the reduced diameter section 21 and the bevel end 32.

[0042] Example 2

[0043] In another typical embodiment of the present invention, an engine cooling system is proposed, which adopts the retractable cooling water pipe 8 described in Example 1, and also includes: a water jacket and a water pump. The two ends of the retractable cooling water pipe 8 are respectively connected to the water jacket and the water pump by means of plug-in fixing.

[0044] Specifically, one end of the first pipe section 1 of the telescopic cooling water pipe is provided with a fifth mounting groove 15 and is connected to the water pump, and a second sealing ring 5 is installed at the fifth mounting groove 15 to improve the sealing of the connection; the other end of the first pipe section 1 is inserted into the straight section 22 of the second pipe section 2 and is limited by a retaining spring 6; a ring 3 is sleeved at the reduced diameter section 21 of the second pipe section 2 and is connected to the water jacket of the engine.

[0045] The specific usage is as follows (installation location is as follows Figure 6 shown):

[0046] When installing the telescopic cooling water pipe 8, remove the valve cover of the engine, firstly, completely insert the insertion portion of the first pipe section 11 into the straight section 22 to shorten the overall length of the telescopic cooling water pipe 8 so as to facilitate installation in the engine;

[0047] After the retractable cooling water pipe 8 is placed in the engine, the first pipe section 1 is pulled outward along the axial direction until the length of the cooling water pipe meets the requirements, so that the fourth installation groove 14 is completely exposed, and the end of the first pipe section 1 provided with the fifth installation groove 15 is connected to the water pump, and the reduced diameter section 21 of the second pipe section 2 is connected to the water jacket through the ferrule 3, and the gasket 7 and the retaining spring 6 are installed in the fourth installation groove 14 to limit the relative position between the first pipe section 1 and the second pipe section 2. Under the action of the water pump, the coolant flows through the first pipe section 1 and the second pipe section 2 in sequence, and finally flows to the water jacket of the engine. The retaining spring 6 can effectively limit the movement of the first pipe section 1 along the flow direction of the coolant;

[0048] When the retractable cooling water pipe 8 is damaged and needs to be replaced, the valve cover of the engine can be removed, and the retaining ring 6 and gasket 7 on the first pipe section 1 can be removed, and the connection between the first pipe section 1, the second pipe section 2 and the water pump and the water jacket can be removed, and the overall length of the cooling water pipe can be shortened and removed.

[0049] The installation and removal of the retractable cooling water pipe 8 does not require the entire engine to be removed or the cooling water pipe to be cut when the automobile cooling water pipe is replaced or repaired. It is not affected by the small space in the engine compartment and is easy to use. The engine cooling water pipe can be replaced in a limited space, which greatly reduces the maintenance cost and time.

[0050] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A retractable cooling water pipe, comprising: The first pipe section (1) and the second pipe section (2) are characterized in that one end of the first pipe section (1) is slidably inserted into the second pipe section (2), a plurality of first sealing rings (4) are sleeved on the first pipe section (1), the first sealing rings (4) are located in the second pipe section (2), the other end of the first pipe section (1) extends outward and is sleeved with a second sealing ring (5), the end of the second pipe section (2) away from the first pipe section (1) is sleeved with a ring (3), a retaining spring (6) is installed at a position close to the second pipe section (2) on the first pipe section (1), the retaining spring (6) is located outside the second pipe section (2), and the retaining spring (6) is an open ring body.

2. The retractable cooling water pipe according to claim 1, characterized in that: The portion of the first pipe section (1) inserted into the second pipe section (2) in the working state is an insertion portion, and a first mounting groove (11), a second mounting groove (12) and a third mounting groove (13) are provided on the insertion portion along its axial direction at intervals, and the first sealing ring (4) is correspondingly installed in the first mounting groove (11), the second mounting groove (12) and the third mounting groove (13), and a fifth mounting groove (15) is provided at one end of the first pipe section (1) away from the second pipe section (2), and the second sealing ring (5) is installed in the fifth mounting groove (15).

3. The retractable cooling water pipe according to claim 2, characterized in that: A fourth mounting groove (14) is provided between the third mounting groove (13) and the fifth mounting groove (15); the fourth mounting groove (14) is close to the third mounting groove (13); and a retaining spring (6) and a gasket (7) are installed in the fourth mounting groove (14).

4. The retractable cooling water pipe according to claim 2, characterized in that: The second pipe section (2) comprises a coaxially arranged reduced diameter section and a straight-through section (22); the reduced diameter section is connected to the interior of the straight-through section (22); the outer diameter and the inner diameter of the reduced diameter section are smaller than those of the straight-through section (22); the ferrule (3) is sleeved on the reduced diameter section, and the insertion portion is inserted into the straight-through section (22).

5. The retractable cooling water pipe according to claim 4, characterized in that: The inner diameter of the straight section (22) is not less than the outer diameter of the insertion part, the length of the straight section (22) is greater than the length of the insertion part, and the inner diameter of the reduced diameter section is smaller than the outer diameter of the insertion part.

6. The retractable cooling water pipe according to claim 4, characterized in that: The ferrule (3) comprises a connected plane end (31) and a bevel end (32); the interior of the plane end (31) is a circular through hole of full diameter; the bevel end (32) is a through hole of reduced diameter; the outer diameter of the reduced diameter section is larger than the minimum inner diameter of the bevel end (32); and the outer diameter of the reduced diameter section is smaller than the maximum inner diameter of the bevel end (32).

7. An engine cooling system, characterized in that: A retractable cooling water pipe as claimed in any one of claims 1 to 6 is used, further comprising: a water jacket and a water pump, wherein both ends of the retractable cooling water pipe (8) are respectively connected to the water jacket and the water pump.

8. An engine cooling system according to claim 7, characterized in that: One end of the first pipe section (1) is connected to a water pump, and the other end of the first pipe section (1) is slidably inserted into a straight section (22) of a second pipe section (2). A ferrule (3) is provided on the reduced diameter section of the second pipe section (2), and the reduced diameter section is connected to a water jacket.

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