CN114440046B - Cooling liquid buffer device of water-cooled motor - Google Patents

Abstract

The invention discloses a cooling liquid buffer device of a water-cooled motor, which relates to the technical field of motors and adopts the technical scheme that: including branch pipe and buffer tank, branch pipe one end is passed through the three-way water supply connector and is linked together with water cooled machine's inlet tube, and the buffer tank is connected to the branch pipe other end, the sub-unit connection of buffer tank has the moisturizing pipe, the moisturizing pipe passes through the booster pump and is connected with cooling water source, insert the buffer tube on the moisturizing pipe corresponding to between booster pump and the buffer tube. The invention can buffer the cooling liquid input into the water-cooled motor, and avoids the damage of the water-cooled cavity of the motor caused by overhigh pressure of the cooling liquid, thereby improving the running stability of the water-cooled motor.

Description

Cooling liquid buffer device of water-cooled motor

Technical Field

The invention relates to the technical field of motors, in particular to a cooling liquid buffer device of a water-cooled motor.

Background

In the working process of the water-cooled motor, the water-cooled motor needs to be connected into a water-cooled system, cooling liquid is continuously circulated and input into the water-cooled motor through a liquid pump, heat generated by the motor in working is taken away, and the heat dissipation efficiency of the motor is improved.

However, in the process of supplying the cooling liquid to the water-cooled motor, the pressure may be unstable, and if the pressure of the cooling liquid is too high, the water-cooled cavity of the water-cooled motor may be too high under pressure, which may cause the water-cooled cavity to be broken, and further cause the motor to be damaged; if the pressure of the cooling liquid is too low, the cooling liquid cannot be normally circulated to dissipate heat, and the normal work of the motor is also influenced.

Therefore, a new solution is needed to solve this problem.

Disclosure of Invention

The invention aims to solve the problems and provides a cooling liquid buffer device of a water-cooled motor, which can buffer cooling liquid input into the water-cooled motor, avoid damage to a water-cooling cavity of the motor caused by overhigh pressure of the cooling liquid and further improve the running stability of the water-cooled motor.

The technical purpose of the invention is realized by the following technical scheme: the utility model provides a water cooled machine's coolant liquid buffer, coolant liquid buffer includes branch pipe and buffer tank, branch pipe one end is passed through three-way water supply connector and water cooled machine's inlet tube intercommunication, and the buffer tank is connected to the branch pipe other end, the sub-unit connection of buffer tank has the moisturizing pipe, the moisturizing pipe passes through the booster pump and is connected with cooling water source, insert the buffer tube on the moisturizing pipe corresponding to between booster pump and the buffer tank.

The invention is further configured such that the buffer tube is an elastically extensible bellows.

The buffer tube is characterized in that a buffer shell is arranged on the outer side of the buffer tube, the buffer tube is elastically stretched in the buffer shell, and two end faces of the buffer shell are used for abutting against and limiting two ends of the buffer tube so as to limit the maximum elastic expansion amount of the buffer tube; and through holes for the water supply pipes to pass through are formed in two end faces of the buffer pipe.

The invention is further provided that a buffer joint is connected between the branch pipe and the buffer tank; the inner cavity that the buffering connects sets up the baffle, the buffering connects and passes through branch pipe intercommunication water supply connector corresponding to the one end of baffle upside, passes through branch pipe intercommunication buffer tank corresponding to the one end of baffle downside.

The invention is further provided that a buffer cylinder is fixedly connected to the baffle plate, the buffer cylinder penetrates through the upper side and the lower side of the baffle plate, a hollow annular cavity is formed in the side wall of the buffer cylinder, an outer flow-limiting ring and an inner flow-limiting ring which are mutually sleeved are arranged in the annular cavity, and the inner flow-limiting ring is hermetically sleeved on the inner wall of the annular cavity and can axially slide and adjust; the outer flow limiting ring and the inner flow limiting ring are fixedly connected through a flow limiting plate, the lower side of the flow limiting plate is elastically supported through a flow limiting spring, the upper end of the outer flow limiting ring and the upper end face of the annular cavity are in abutting seal, and a sealing ring is arranged on the upper end face of the annular cavity; and the upper end of the annular cavity is provided with a first connecting hole corresponding to the inner side of the outer flow limiting ring, and the lower end of the annular cavity is provided with a second connecting hole.

The invention is further arranged in that the flow restriction plate is provided with a flow restriction hole which penetrates through the upper side and the lower side, the upper side of the flow restriction plate is covered with an elastic blocking piece, the elastic blocking piece is annular, the inner periphery of the elastic blocking piece is fixed with the inner ring of the flow restriction plate, the outer periphery of the elastic blocking piece is pressed and covered on the flow restriction hole, and the flow restriction hole is sealed.

The invention is further arranged in such a way that a supporting block which can be adjusted up and down is arranged at the lower side in the annular cavity, and the second connecting hole is formed in the side wall at the inner side of the annular cavity; the inner side of the supporting block is connected with a connecting frame, and the other end of the connecting frame penetrates through the second connecting hole to be fixed with a lifting block; and a piston device is arranged in the middle of the buffer cylinder and used for adjusting the height of the lifting block.

The invention is further arranged in that a piston cavity filled with damping medium is filled in the piston device, a piston in the piston cavity is connected with a piston block capable of lifting up and down, the lower end of the piston block is fixedly connected with a piston rod, the lower end of the piston rod penetrates through the lower side wall of the piston device and is fixedly connected with the lifting block, and the periphery of the piston rod and the piston device are sealed with each other.

The invention is further provided with a piston hole at the upper end of the piston device, a piston in the piston hole is connected with a piston column, one end of the piston column extends out of the piston device, and the other end of the piston column extends into the piston cavity and is connected with a sealing block; the side wall of the piston device is provided with a connecting channel communicated with the upper cavity and the lower cavity of the piston block, the upper end and the lower end of the connecting channel are respectively provided with a first connecting port and a second connecting port, and the first connecting port extends to the lower side of the inner periphery of the piston hole and is sealed by a sealing block; and the second connecting port extends to the lowest end of the piston cavity.

The invention is further provided that the buffer joint is connected with an adjusting device corresponding to the upper side of the baffle plate, and the adjusting device is used for pressing the piston column downwards so that the connecting channel is communicated with the chambers on the upper side and the lower side of the piston block.

The invention is further arranged in that the adjusting device comprises an adjusting pipe, one end of the adjusting pipe is communicated with the inner cavity of the buffer joint, a piston in the adjusting pipe is connected with an adjusting piston, one side of the adjusting piston, which faces the buffer joint, is fixedly connected with an adjusting rod, the adjusting rod is fixedly connected with a pressing block, and the lower side of the pressing block is provided with an inclined plane which is matched with the upper end of the piston column in a pressing manner; one side of the adjusting piston, which is back to the buffering joint, is elastically supported through adjusting buffering.

The invention is further arranged in that two ends in the adjusting pipe are respectively provided with a bulge for limiting the stroke of the adjusting piston, one end of the adjusting pipe, which is back to the buffer joint, is internally provided with an adjustable adjusting block, the adjusting spring elastically props against between the adjusting piston and the adjusting block, the adjusting block is fixedly connected with a screw rod, the tail end of the adjusting pipe is provided with a screw hole matched with the screw thread of the screw rod, and the screw rod penetrates through the screw hole and extends out of the adjusting pipe.

The invention is further provided that the pressing block is fixedly connected to the middle position of the adjusting rod, one end of the adjusting rod is fixedly connected with the adjusting piston, and the other end of the adjusting rod is slidably supported through the guide cylinder in the buffer joint.

In conclusion, the invention has the following beneficial effects:

the cooling liquid buffer device can buffer the cooling liquid input into the water-cooled motor, and avoids the damage of a water-cooled cavity of the motor caused by overhigh pressure of the cooling liquid, thereby improving the running stability of the water-cooled motor;

by arranging the corrugated pipe capable of elastically stretching as the buffer pipe, the expansion and contraction of the corrugated pipe can adapt to the pressure change in the buffer tank; then, the booster pump is matched for boosting, so that the stable pressure of the buffer cavity can be maintained, and the pressure of the cooling liquid input end of the water-cooling motor is maintained to be stable;

through connecting at the buffering, can control the pressure between buffer tank and the liquid cooling input, can complement the buffer each other under the great condition of pressure differential to can keep water cooled machine's normal cooling work.

Drawings

FIG. 1 is a schematic structural diagram of a water-cooled motor according to the present invention;

FIG. 2 is a schematic structural diagram of a cooling liquid buffer device of a water-cooled motor according to the present invention;

FIG. 3 is a schematic structural diagram of a water-cooled motor system according to the present invention;

FIG. 4 is a schematic view of the structure of the cushion joint of the present invention;

FIG. 5 is a schematic structural view of a buffer cylinder according to the present invention;

FIG. 6 is a schematic view of the piston assembly of the present invention;

fig. 7 is a schematic structural diagram of the adjusting device of the present invention.

Reference numerals are as follows: 1. a motor casing; 2. a water-cooled cavity; 3. a partition plate; 4. a water inlet; 5. a water inlet joint; 6. a water outlet; 7. a water outlet joint; 71. a conduit; 8. a water inlet pipe; 9. a water outlet pipe; 10. a one-way valve; 11. a branch pipe; 12. a buffer tank; 13. a water replenishing pipe; 14. a buffer tube; 15. a booster pump; 16. a buffer housing; 17. a through hole; 18. a buffer joint; 19. a baffle plate; 20. a buffer cylinder; 21. a piston device; 22. an annular cavity; 23. a first connecting hole; 24. connecting holes II; 25. an outer restrictor ring; 26. an inner restrictor ring; 27. a restrictor plate; 28. a current limiting spring; 29. a flow restriction orifice; 30. an elastic baffle plate; 31. a seal ring; 32. a support block; 33. a lifting block; 34. a connecting frame; 35. a piston cavity; 36. a piston block; 37. a piston rod; 38. a piston bore; 39. a piston post; 40. a sealing block; 41. a connecting channel; 42. a first connecting port; 43. a second connecting port; 44. an adjustment tube; 45. an adjusting piston; 46. adjusting a rod; 47. briquetting; 47. a bevel; 48. adjusting the spring; 49. a regulating block; 50. a screw; 51. a screw hole; 52. a protrusion; 53. and a guide cylinder.

Detailed Description

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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.

Example one

The utility model provides a water-cooled motor, establishes the motor casing 1 of water-cooling chamber 2 in including, can all set up water-cooling chamber 2 in the middle of the annular casing of motor and front and back end cover, connects the cooling liquid source of circulation with water-cooling chamber 2 through the pipeline, through constantly to the pump feed coolant liquid in the middle of water-cooling chamber 2 for the motor can dispel the heat fast.

As shown in fig. 1, taking the structure of the water-cooling cavity 2 of the front end cover of the motor as an example, the upper side of the water-cooling cavity 2 is connected with a water inlet 4 and a water outlet 6, the water inlet 4 is connected with a water inlet pipe 8 through a water inlet joint 5, and the water outlet 6 is connected with a water outlet pipe 9 through a water outlet joint 7; the water inlet pipe 8 and the water outlet pipe 9 are respectively communicated with a cooling liquid source to realize the inlet and outlet of the cooling liquid.

In order to improve the stability of the inlet and outlet of the cooling liquid, the one-way valves 10 can be respectively arranged on the water inlet pipe 8 and the water outlet pipe 9, and the one-way valves 10 can be conducted in one way from the water inlet 4 to the water outlet 6, so that the situations that the backflow is fluctuated due to unstable pressure in the cooling liquid conveying pipeline and the like can be avoided.

This water-cooling chamber 2 is the annular, and around the periphery at the motor, the inside upside position installation division board 3 of water-cooling chamber 2, cut off water-cooling chamber 2 in division board 3 position, and water inlet 4 and delivery port 6 distribute in the both sides position of division board 3, make the coolant liquid can stably encircle the delivery port 6 outflow that just can follow the other end after water-cooling chamber 2 flows after getting into from the one end of water-cooling chamber 2, thereby the heat transfer route and the heat exchange time of extension coolant liquid, improve the radiating efficiency of motor.

A conduit 71 can be connected to the inner side of the water outlet joint 7, the conduit 71 extends into the water outlet 6 and extends to the middle upper part of the water-cooling cavity 2, so that a part of air can be reserved at the extreme position of the water-cooling cavity 2, the conduit 71 can also extend to be below the liquid level, and cooling can also be discharged from the conduit 71; a part of gaps can be reserved in the water cooling cavity 2 so as to form a certain pressure buffer space inside the water cooling cavity 2, so that the water cooling cavity is better suitable for a fluctuating water pressure environment.

Example two

A cooling liquid buffer device of a water-cooled motor, which is used in cooperation with the water-cooled motor in the first embodiment, and is described in detail with reference to fig. 2 to 3.

The cooling liquid buffer device comprises a branch pipe 11, a buffer tank 12 and other adaptive components, and particularly as shown in fig. 2, the branch pipe 11 is connected to the lateral side of the water inlet joint 5, so that the water inlet joint 5 forms a three-way structure; the other end of the branch pipe 11 is connected with a buffer tank 12, buffer solution is stored in the buffer tank 12, and the pressure of the cooling liquid passing through the water inlet joint 5 can be adjusted by maintaining proper pressure;

the lower part of the buffer tank 12 is connected with a water supplementing pipe 13, the water supplementing pipe 13 is connected with a cooling water source through a booster pump 15, and the water pressure can be compensated in the buffer tank 12 through the booster pump 15; a buffer tube 14 is connected to the water supply pipe 13, and the buffer tube 14 corresponds to a position between the booster pump 15 and the buffer tube 14, and can further buffer the water pressure in the buffer tank 12 to maintain a relatively stable balance of the pressure in the buffer tank 12.

The buffer tube 14 is an elastically stretchable corrugated tube, and can be adapted to the change in pressure in the buffer tank 12 by expansion and contraction of the corrugated tube; and a buffer shell 16 is arranged at the outer side of the buffer tube 14, and the buffer shell 16 can be used for elastically stretching and contracting the buffer tube 14 so as to provide a limited expansion stroke for the buffer tube 14; the two end surfaces of the buffer shell 16 can be pressed against the two ends of the buffer tube 14 for limiting so as to limit the maximum elastic expansion amount of the buffer tube 14; the buffer tube 14 is provided with through holes 17 at both end surfaces thereof through which the water supply pipes 13 pass, so that the buffer tube 14 can expand and contract more smoothly.

When the input pressure in the water inlet pipe 8 is reduced, the cooling liquid in the buffer tank 12 is additionally input into the water cooling cavity 2, and the stable water supply of the water cooling cavity 2 is kept; when the water pressure input by the water inlet pipe 8 is too high, the water can be distributed to the buffer tank 12, and the buffer tank 12 and the buffer pipe 14 buffer and absorb the water through pressure relief and buffer, so that the danger that the shell and the pipe wall of the motor burst and the like caused by too high pressure is avoided.

The check valves 10 installed on the water inlet pipe 8 and the water outlet pipe 9 can claim the buffering function of the components such as the buffer tank 12 and the like, so that the cooling liquid can be stably and unidirectionally conveyed in the water cooling cavity 2, and the efficient and stable cooling and heat dissipation of the motor can be realized.

EXAMPLE III

A coolant buffer device for a water-cooled motor, which is based on the second embodiment and is shown in fig. 4 to 5, will be described with reference to the pressure stabilizing structure between the branch pipe 11 and the buffer tank 12.

A buffer joint 18 is connected between the branch pipe 11 and the buffer tank 12, the pressure between the buffer tank 12 and the water inlet joint 5 can be balanced through the buffer joint 18, and when the pressure on two sides is relatively balanced or the pressure difference is not large, the buffer joint 18 can keep the two sides closed; when the pressure on one side is too high, the buffer joint 18 can be opened, and pressure relief and buffering are realized.

As shown in fig. 4, a baffle plate 19 is fixed in the inner cavity of the buffer joint 18, one end of the buffer joint 18 corresponding to the upper side of the baffle plate 19 is communicated with the water inlet joint 5 through a branch pipe 11, and one end corresponding to the lower side of the baffle plate 19 is communicated with the buffer tank 12 through the branch pipe 11, so that the baffle plate 19 can separate the two end positions where the buffer joint 18 is connected.

The baffle 19 is fixedly connected with a buffer cylinder 20, the buffer cylinder 20 penetrates through the upper side and the lower side of the baffle 19, the side wall of the buffer cylinder 20 is hollow to form a hollow annular cavity 22, the upper end and the lower end of the annular cavity 22 are respectively provided with a connecting hole I23 and a connecting hole II 24, and the upper side chamber and the lower side chamber of the baffle 19 are communicated through the connecting hole I23 and the connecting hole II 24, so that the circulation of buffered cooling liquid is realized;

an outer restrictor ring 25 and an inner restrictor ring 26 are arranged in the annular chamber 22, which are fitted to each other, wherein the inner restrictor ring 26 is sealingly fitted to the inner wall of the annular chamber 22 and is axially slidably adjustable. The outer flow restricting sleeve is larger and longer in diameter and is sleeved on the periphery of the inner flow restricting sleeve, and the outer flow restricting ring 25 and the inner flow restricting ring 26 are fixedly connected through a flow restricting plate 27, so that synchronous lifting movement of the inner flow restricting ring 26 and the outer flow restricting ring 25 is realized. A sealing ring 31 is arranged on the upper end surface of the annular cavity 22, and in the upward movement process of the outer restrictor ring 25, the upper end annular surface of the outer restrictor ring 25 can be pressed against the sealing ring 31 at the upper end of the annular cavity 22 to form a pressing sealing structure; the first connecting hole 23 is formed in the upper end of the annular cavity 22 at a position corresponding to the inner side of the outer restrictor ring 25, so that a channel between the first connecting hole 23 and the second connecting hole 24 can be cut off under the condition that the outer restrictor ring 25 is pressed against the upper end face, and the buffer joint 18 is disconnected.

The lower side of the restrictor plate 27 is elastically supported by the restrictor spring 28, and the restrictor spring 28 can always provide a pressure to the restrictor plate 27, so that the outer restrictor ring 25 can always be pressed against the upper end face of the annular cavity 22, and a closed state when the pressure is relatively balanced can be maintained.

In order to realize the bidirectional communication of the annular cavity 22, a flow restriction hole 29 penetrating through the upper and lower sides of the flow restriction plate 27 may be provided, an elastic baffle 30 may be covered on the upper side of the flow restriction hole 29, the elastic baffle 30 may be made of an annular rubber material, the inner periphery of the elastic baffle 30 is fixed to the inner ring of the flow restriction plate 27, and the outer periphery is pressed against and covered on the flow restriction hole 29 to seal the flow restriction hole 29. Because the elastic blocking piece 30 has certain elasticity, when the elastic blocking piece 30 is subjected to large pressure in the direction from the first connecting hole 23, the elastic blocking piece 30 can stably cover the flow limiting hole 29 to seal the flow limiting hole 29; when the coolant is subjected to the action of large pressure in the direction from the second connecting hole 24, the elastic blocking piece 30 is elastically upwarped due to the pressure of the coolant, and the space between the elastic blocking piece 30 and the flow limiting hole 29 is opened, so that the channel of the second connecting hole 24 facing to the first connecting hole 23 can be opened, and the communication of the coolant channel is realized.

By providing a bi-directional valve structure in the annular chamber 22, the pressure at both ends of the cushion joint 18 can be maintained stable, and stable operation under a steady state can be maintained; and when the pressure on any side fluctuates, the pressure is buffered, and the conveying stability of the cooling liquid is kept. By adopting the bidirectional different valve structures, different conduction pressure difference conditions can be formed, so that the valve can meet more use environment requirements.

Example four

A coolant buffer device for a water-cooled motor, which is described in detail with reference to fig. 6 and 7 in addition to the third embodiment; on the basis of the third embodiment, the buffer joint 18 in the water flow water-cooled motor system is further optimized, so that the reliability of the cooling liquid buffer is further improved.

A supporting block 32 is arranged at the lower side in the annular cavity 22, the supporting block 32 is annular and can be adjusted up and down, and two ends of an adjusting spring 48 in the annular cavity 22 are respectively pressed between the flow limiting plate 27 and the supporting block 32 to maintain the outer flow limiting ring 25 to be capable of being pressed with the sealing ring 31 at the upper end in a sealing manner; during operation, by adjusting the height of the supporting block 32, the amount of compression formed by the adjusting spring 48 will be correspondingly changed, so as to change the pressure of the adjusting spring 48 maintaining the outer restrictor ring 25 at a constant pressure, and adjust the pressure difference when the annular chamber 22 is opened from top to bottom.

A second connecting hole 24 at the lower side of the annular cavity 22 is formed in the side wall of the inner side of the annular cavity 22; and the inner side of the supporting block 32 is connected with a connecting frame 34, the other end of the connecting frame 34 passes through the second connecting hole and is fixed with a lifting block 33. A piston device 21 is installed at an intermediate position inside the buffer cylinder 20, and the height of the adjusting lifter 33, and thus the height of the supporting shoe 32 and the compression of the spring 48 can be adjusted by the piston device 21.

The piston device 21 can adopt various forms, for example, an electric or pneumatic telescopic cylinder body, namely, the piston device can be actively adjusted by external power; alternatively, as shown in fig. 6, the piston device 21 may have a hollow piston cavity 35, the piston cavity 35 extends vertically, a piston block 36 capable of moving vertically is connected to the piston in the piston cavity 35, and a gap of the piston cavity 35 is filled with a damping medium having a certain pressure, such as damping oil or gas, so as to achieve a certain damping stabilizing effect in a closed space.

The lower end of the piston block 36 is fixedly connected with a piston rod 37, the lower end of the piston rod 37 penetrates through the lower side wall of the piston device 21 and is fixedly connected with the lifting block 33, and the periphery of the piston rod 37 and the piston device 21 are mutually sealed through a sliding sealing piece, so that the lifting block 33 and the supporting block 32 in the annular cavity 22 can be driven to synchronously lift through the lifting of the piston block 36.

A piston hole 38 is formed in the upper end of the piston device 21, a piston column 39 is connected to the piston in the piston hole 38, one end of the piston column 39 extends out of the piston device 21, and the other end of the piston column 39 extends into the piston cavity 35 and is connected with a sealing block 40; the sealing block 40 can be pushed to be pressed against the upper end face of the sealing cavity under the action of high pressure in the piston device 21;

in order to realize that the piston block 36 can be smoothly adjusted up and down, a connecting channel 41 for communicating the upper chamber and the lower chamber of the piston block 36 is arranged on the side wall of the piston device 21, a first connecting port 42 and a second connecting port 43 are respectively arranged at the upper end and the lower end of the connecting channel 41, and the first connecting port 42 extends to the lower side of the inner periphery of the piston hole 38 and is sealed by a sealing block 40; the second connection port 43 extends to the lowermost end of the piston chamber 35. Therefore, the piston post 39 is pressed at the upper end of the piston post 39, so that the sealing block 40 can be driven to move, the first connecting port 42 at the upper end of the connecting channel 41 is opened, the pressure balance of the chambers at the two sides of the piston block 36 can be kept, the buffer medium can normally circulate, and the piston block 36 can smoothly ascend and descend.

In order to be able to press and adjust the piston post 39, an adjusting device may be connected to the cushion joint 18 above the stop plate 19, and by means of the action of the adjusting device, the piston post 39 may be driven and pressed, so that the gasket may be moved downward.

The adjusting device can take various forms, for example, a pneumatic or electric cylinder can be used, the adjusting rod 46 is driven by external power, and the piston is pressed and adjusted by a pressing block 47 on the adjusting rod 46. Or the structure in fig. 7 can be adopted for implementation, and the adjusting device specifically comprises an adjusting tube 44, an adjusting piston 45 and an adjusting rod 46, wherein one end of the adjusting tube 44 is communicated with the inner cavity of the buffer joint 18, and the piston in the adjusting tube 44 is connected with the adjusting piston 45, so that the adjusting piston 45 can realize piston movement in the adjusting tube 44 and can keep a sealed state in the moving process;

the adjusting piston 45 is fixedly connected with an adjusting rod 46 at one side facing the buffer joint 18, the adjusting rod 46 extends into the buffer joint 18, a press block 47 is fixed on the adjusting rod 46, the moving path of the press block 47 is perpendicular to the moving path of the piston column 39, an inclined plane 47 can be arranged at the lower side of the press block 47, and an adaptive inclined plane 47 is also formed at the upper side of the piston column 39, so that the press block 47 and the piston column 39 can form adaptive guide movement, and a downward pressing component force can be generated on the piston column 39 in the extension and retraction process of the adjusting rod 46; in order to maintain the stability of the pressing block 47 and the adjusting rod 46, the pressing block 47 is fixedly connected to the adjusting rod 46 at a middle position, one end of the adjusting rod 46 is fixedly connected with the adjusting piston 45, and the other end is slidably supported by a guide cylinder 53 in the buffering connector 18.

The two ends inside the adjusting tube 44 are respectively provided with a protrusion 52 for limiting the stroke of the adjusting piston 45, and one side of the adjusting piston 45, which is opposite to the buffer joint 18, is elastically supported by the adjusting buffer, and the buffer spring can push the adjusting piston 45 to press towards the buffer joint 18, so that the stability of the adjusting piston 45 is maintained.

When the upper chamber of the buffer joint 18 generates high pressure, i.e. high pressure is generated at the water inlet 4 of the cooling chamber, the pressure of the cooling liquid will push the adjusting piston 45 to move towards the outer end, overcoming a certain pressure of the adjusting spring 48, and the valve structure in the annular chamber 22 will also be depressurized.

When the pressure of the water inlet 4 of the cooling cavity is too high and pressure needs to be relieved more quickly, the pressure of the cooling liquid directly pushes the adjusting piston 45 and drives the adjusting rod 46 and the pressing block 47 to relatively press the piston column 39, and the sealing gasket opens the connecting channel 41, so that the media on the upper side and the lower side of the piston block 36 can be communicated, and the pressure is balanced; the internal pressure of piston chamber 35 and adjusting spring 48's pressure will drive piston rod 37, elevator 33 and supporting shoe 32 synchronous decline to can locking adjusting spring 48 correspond the pressure of outer current limiting sleeve to a certain extent, make connecting hole 23 direction can change and open, so that the effect of pressure release protection is played in faster pressure release.

Further, an adjusting block 49 is installed in one end of the adjusting pipe 44, which is opposite to the buffer joint 18, the adjusting spring 48 elastically presses between the adjusting piston 45 and the adjusting block 49, and the adjusting block 49 can be adjusted along the length direction of the adjusting pipe 44, so that the initial compression condition of the adjusting spring 48 is adjusted to a certain degree; and fixedly connected with screw rod 50 on adjusting block 49, the screw hole 51 has been seted up to the end of adjusting pipe 44, and this screw rod 50 passes screw hole 51 and stretches out outside adjusting pipe 44 to can with screw hole 51 screw thread adaptation, thereby can adjust adjusting block 49's position through adjusting screw rod 50, with the pressure release requirement of adaptation different pressure differentials, thereby have better environmental suitability.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to those skilled in the art without departing from the principles of the present invention should also be considered as within the scope of the present invention.

Claims (8)

1. The cooling liquid buffering device of the water-cooled motor is characterized by comprising a branch pipe and a buffering tank, wherein one end of the branch pipe is communicated with a water inlet pipe of the water-cooled motor through a three-way water inlet joint, the other end of the branch pipe is connected with the buffering tank, the lower part of the buffering tank is connected with a water supplementing pipe, the water supplementing pipe is connected with a cooling water source through a booster pump, and a buffering pipe is connected between the water supplementing pipe and the buffering tank corresponding to the booster pump;

a buffer joint is connected between the branch pipe and the buffer tank; the inner cavity of the buffer joint is provided with a baffle plate, one end of the buffer joint, which corresponds to the upper side of the baffle plate, is communicated with the water inlet joint through a branch pipe, and one end of the buffer joint, which corresponds to the lower side of the baffle plate, is communicated with the buffer tank through a branch pipe;

the baffle plate is fixedly connected with a buffer cylinder, the buffer cylinder penetrates through the upper side and the lower side of the baffle plate, a hollow annular cavity is formed in the side wall of the buffer cylinder, an outer flow limiting ring and an inner flow limiting ring which are mutually sleeved are arranged in the annular cavity, and the inner flow limiting ring is hermetically sleeved on the inner wall of the annular cavity and can be axially adjusted in a sliding manner; the outer flow limiting ring and the inner flow limiting ring are fixedly connected through a flow limiting plate, the lower side of the flow limiting plate is elastically supported through a flow limiting spring, the upper end of the outer flow limiting ring and the upper end face of the annular cavity are in abutting seal, and a sealing ring is arranged on the upper end face of the annular cavity; and the upper end of the annular cavity is provided with a first connecting hole corresponding to the inner side of the outer flow limiting ring, and the lower end of the annular cavity is provided with a second connecting hole.

2. The cooling liquid buffering device for water-cooled motor as claimed in claim 1, wherein the buffer tube is an elastically stretchable corrugated tube.

3. The cooling liquid buffer device of the water-cooled motor as claimed in claim 2, wherein a buffer shell is arranged outside the buffer tube, the buffer tube is elastically stretched and contracted in the buffer shell, and two end faces of the buffer shell are used for abutting against two ends of the buffer tube for limiting so as to limit the maximum elastic expansion amount of the buffer tube; and through holes for the water supply pipes to pass through are formed in two end faces of the buffer pipe.

4. The cooling liquid buffer device of the water-cooled motor according to claim 1, wherein the flow restriction plate is provided with a flow restriction hole penetrating through the upper side and the lower side, the upper side of the flow restriction plate is covered with an elastic blocking piece, the elastic blocking piece is annular, the inner circumference of the elastic blocking piece is fixed with the inner ring of the flow restriction plate, and the outer circumference of the elastic blocking piece is pressed against and covers the flow restriction hole and seals the flow restriction hole.

5. The cooling liquid buffer device of the water-cooled motor as claimed in claim 1, wherein a supporting block which can be adjusted up and down is arranged at the lower side in the annular cavity, and the second connecting hole is formed in the side wall at the inner side of the annular cavity; the inner side of the supporting block is connected with a connecting frame, and the other end of the connecting frame penetrates through the second connecting hole to be fixed with a lifting block; and a piston device is arranged in the middle of the buffer cylinder and is used for adjusting the height of the lifting block.

6. The cooling liquid buffering device of the water-cooled motor according to claim 5, wherein the piston device is filled with a piston cavity filled with a damping medium, the piston cavity is connected with a piston block capable of ascending and descending, the lower end of the piston block is fixedly connected with a piston rod, the lower end of the piston rod penetrates through the lower side wall of the piston device and is fixedly connected with the ascending and descending block, and the periphery of the piston rod and the piston device are sealed with each other.

7. The cooling liquid buffering device of the water-cooled motor as claimed in claim 6, wherein a piston post is connected to the upper end of the piston device, and one end of the piston post extends out of the piston device, and the other end of the piston post extends into the piston cavity and is connected with a sealing block; the side wall of the piston device is provided with a connecting channel communicated with the upper cavity and the lower cavity of the piston block, the upper end and the lower end of the connecting channel are respectively provided with a first connecting port and a second connecting port, and the first connecting port extends to the lower side of the inner periphery of the piston hole and is sealed by a sealing block; and the second connecting port extends to the lowest end of the piston cavity.

8. The cooling liquid buffering device for the water-cooled motor as claimed in claim 7, wherein the buffering connector is connected with an adjusting device corresponding to the upper side of the baffle plate, and the adjusting device is used for pressing the piston column downwards so that the connecting channel is communicated with the chambers on the upper and lower sides of the piston block.

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