Gearbox cooling device and gearbox

Abstract

The utility model discloses a gearbox cooling device which comprises a box body provided with a pipeline outlet and an air hole. The cooling pipeline is arranged in the box body, the two ends of the cooling pipeline penetrate out of the pipeline outlet to form a liquid inlet and a liquid outlet, and the cooling pipeline is used for allowing cooling liquid to flow through; the oil-gas tank is connected to the air hole of the box body, an inner cavity of the oil-gas tank is communicated with an inner cavity of the box body, the oil-gas tank is provided with an air hole, and heated and gasified lubricating oil enters the oil-gas tank through the air hole, is cooled and liquefied in the oil-gas tank and flows back into the box body again. The utility model further discloses a gearbox using the gearbox cooling device. The gearbox cooling device can solve the problems of high oil temperature and oil gas ventilation of the gearbox.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal pump equipment, in particular to a gearbox cooling device and a gearbox. Background Art

[0002] The gearbox mainly uses the speed reduction principle of gear transmission. When the gears in the gearbox rotate at high speed, friction and temperature rise occur between the meshing gears, causing the temperature of the lubricating oil in the box to rise rapidly. When the temperature of the lubricating oil rises, the lubrication performance decreases, affecting the service life of the bearings and gears. At the same time, the lubricating oil gasifies as the temperature rises, making the air pressure in the box greater than one atmosphere, causing the gasified lubricating oil to overflow from the pores and condense outside the box. Utility Model Content

[0003] In order to overcome the defects in the prior art, the utility model provides a gearbox cooling device and a gearbox. The gearbox cooling device connects an extension pipeline and an oil and gas tank at the air vents of the box body to increase the oil and gas heat exchange area, thereby solving the problems of high gearbox oil temperature and oil and gas permeability.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a gearbox cooling device, comprising:

[0005] A box body, wherein the box body is provided with a pipeline outlet and a vent hole;

[0006] A cooling pipeline, the cooling pipeline is arranged in the box body, the two ends of the cooling pipeline pass through the pipeline outlet to form a liquid inlet and a liquid outlet, and the cooling pipeline is used for cooling liquid to flow through;

[0007] An oil and gas tank is connected to the air vent of the box body, the inner cavity of the oil and gas tank is connected to the inner cavity of the box body, the oil and gas tank is provided with an air hole, the heated and vaporized lubricating oil enters the oil and gas tank through the air vent, is cooled and liquefied in the oil and gas tank, and flows back into the box body.

[0008] Furthermore, an extension pipeline is provided between the oil and gas tank and the box body, one end of the extension pipeline is connected to the air vent of the box body, and the other end of the extension pipeline is connected to the oil and gas tank.

[0009] Through the above technical solution, a cooling pipeline is set in the box to achieve the purpose of cooling, and an extension pipeline and an oil and gas tank are connected at the air vent of the box to increase the oil and gas heat exchange area, thereby solving the problems of high gearbox oil temperature and oil and gas permeability.

[0010] Furthermore, the extension pipeline is made of metal or glass. Metal and glass have high specific heat capacity, fast heat absorption and heat dissipation rates, and are conducive to the liquefaction of gasified lubricating oil.

[0011] Furthermore, the oil and gas tank includes a base connected to the extension pipeline, a tank body connected to the base, and a tank cover connected to an end of the tank body away from the base, the tank cover includes a sealing cover connected to the tank body, the sealing cover is provided with a cooling port, and a cooling element is provided in the cooling port;

[0012] The base is provided with a connection port, the inner side wall of the connection port is provided with a first thread, the outer side walls at both ends of the extension pipeline are provided with a second thread matching the first thread, and the oil and gas tank and the extension pipeline are connected by threads;

[0013] The inner wall of the air vent is provided with the first thread, and the extension pipeline is connected to the air vent via threads.

[0014] Furthermore, the cooling member includes a container that matches the shape of the cooling port, the inner cavity of the container is filled with coolant, and the container has a water exchange port. The vaporized lubricating oil enters the oil-gas tank and indirectly contacts the coolant in the container, and then is cooled and liquefied, and flows back into the box.

[0015] Furthermore, the tank body and the base are detachably connected, and a sealing gasket is provided between the tank body and the base, and the tank body and the tank cover are detachably connected, and a sealing gasket is provided between the tank body and the tank cover. The detachable tank cover facilitates the replacement of the cooling element.

[0016] Furthermore, the cooling pipeline is fixedly connected to the inner wall of the housing, which is convenient for fixing the cooling pipeline and enables the cooling pipeline to avoid the gears in the housing of the gearbox.

[0017] Furthermore, the tank body of the oil and gas tank is made of a transparent material, which facilitates observation of the state of the lubricating oil in the oil and gas tank from the outside.

[0018] Furthermore, a temperature measuring device is provided in the box body, and an alarm is triggered if the temperature in the box body exceeds a preset temperature. The temperature measuring device can be used to determine whether the gearbox cooling device is operating normally.

[0019] A gearbox, comprising the gearbox cooling device, wherein a transmission structure is arranged in the box, and the transmission structure comprises:

[0020] A main shaft, the main shaft is inserted into the housing through a bearing, and the main shaft can be connected to a driving device;

[0021] A transmission shaft is provided in the housing through a bearing, wherein the main shaft and the transmission shaft are connected in the housing through a speed change gear.

[0022] By means of the above technical solution, the beneficial effects of the utility model are as follows:

[0023] 1. In this application, a cooling pipeline is arranged in the box to achieve the purpose of cooling the box;

[0024] 2. The present application increases the oil-gas heat exchange area by connecting an extension pipeline and an oil-gas tank at the air vent of the housing. The heated and vaporized lubricating oil enters the oil-gas tank through the extension pipeline, and is cooled and liquefied in the process and flows back into the housing, thereby solving the problems of high gearbox oil temperature and oil-gas permeability.

[0025] In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below 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.

[0027] Figure 1 This is a schematic diagram of the overall structure of the gearbox in the embodiment of the utility model;

[0028] Figure 2 This is a schematic diagram of the connection structure between the liquid inlet and the box body in the embodiment of the utility model;

[0029] Figure 3 It is a structural schematic diagram of the oil and gas tank in the embodiment of the utility model.

[0030] The figure markings of the above drawings are: 1. box body; 21. main shaft; 22. driven shaft; 3. cooling pipeline; 31. liquid inlet; 4. extension pipeline; 5. oil and gas tank; 51. base; 511. connecting port; 52. tank body; 53. tank cover; 531. sealing cover; 5311. cooling port; 532. container; 5321. water exchange hole. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] It should be noted that in the description of the present invention, the terms "first", "second", etc. are only used for descriptive purposes and to distinguish similar objects. There is no order of precedence between the two, and they cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0033] Example: Combination Figure 1-3 As shown, this embodiment discloses a gearbox, including:

[0034] The housing 1 is provided with two pipeline outlets and one air vent. A transmission structure is provided in the housing, including a main shaft 21 and a driven shaft 22. The main shaft 21 and the transmission shaft 22 are respectively provided on the housing 1 through bearings, that is, the main shaft 21 and the driven shaft 22 can rotate relative to the housing 1. The parts of the main shaft 21 and the driven shaft 22 located in the housing 1 are connected by a transmission gear. The main shaft 21 can be driven by an external motor to rotate, and the speed of the driven shaft 22 is adjusted by the transmission gear.

[0035] The inner wall of the box body 1 is fixedly connected with a cooling pipeline 3. On the premise of avoiding the gears, the cooling pipeline 3 is spread over the inner wall of the box body 1 as much as possible. Figure 2 As shown, in this example, an expansion nut 61 is respectively provided in the two pipeline outlets of the box body 1, and the expansion nut 61 is sealed and fixed to the pipeline outlet of the box body 1 by inserting an expansion screw 62 with a second through hole into the expansion nut 61 and tightening it. Two sealing rings are arranged at intervals in the second through hole of the expansion screw 62, and the two ends of the cooling pipeline 3 are respectively passed through the second through holes of the two expansion screws 62 to form a liquid inlet 31 and a liquid outlet. The liquid inlet 31 is used for an external water source, and the coolant continuously flows through the cooling pipeline 3 to play a role of water cooling. Through the above technical scheme, the cooling pipeline 3 is arranged in the box body 1 to achieve the purpose of cooling, so as to avoid the excessive temperature in the box body 1 affecting the lubricating effect of the lubricating oil.

[0036] It should be noted that the liquid outlet can be connected to a water source, so that the coolant discharged from the cooling pipeline 3 is discharged into the water source to achieve the recycling of the coolant.

[0037] An extension pipeline 4 is connected to the air vent of the box body 1, and the inner wall of the air vent is provided with a first thread, and the outer walls at both ends of the extension pipeline 4 are provided with a second thread matching the first thread, a sealing ring is sleeved on the second thread of the extension pipeline 4 and the second thread is screwed into the first thread of the air vent to fix the extension pipeline 4 to the air vent, so that the inner cavity of the extension pipeline 4 is connected to the inner cavity of the box body 1.

[0038] The end of the extended pipeline plate 4 away from the box body 1 is connected to an oil and gas tank 5. Figure 3 As shown, the oil and gas tank 5 includes a base 51 connected to the extension pipeline 4, the base 51 is provided with a connecting port 511, and the inner side wall of the connecting port 511 is also provided with the first thread, a sealing ring is sleeved on the second thread of the extension pipeline 4 and the second thread is screwed into the first thread of the base 51 to fix the base 51 to the long pipeline plate 4.

[0039] The oil and gas tank 5 also includes a tank body 52 connected to the base 51, and a third thread is provided on the side of the base 51 away from the extension pipeline 4, and the outer walls at both ends of the tank body 52 are provided with fourth threads that match the third thread. A sealing gasket is sleeved on the fourth thread of the tank body 52 and the fourth thread is screwed into the third thread of the base 51 to fix the tank body 52 to the base 51, so that the inner cavity of the tank body 52 is connected to the inner cavity of the extension pipeline 4 through the connecting port 511.

[0040] The oil and gas tank 5 also includes a tank cover 53 connected to the end of the tank body 52 away from the base 51, and the tank cover 53 includes a cover 531 and a cooling member. The inner side wall of the cover 531 is also provided with the third thread, a sealing gasket is sleeved on the fourth thread of the tank body 52 and the fourth thread is screwed into the third thread of the cover 531, so as to fix the cover 531 to the tank body 52. ​​A cooling port 5311 is provided at the geometric center of the cover 531, and the cooling member is sealed and connected to the cooling port 5311. The cooling member includes a container 532 that matches the shape of the cooling port 5311, and two water exchange holes 5321 are provided on the lower side of the container 532 and at two opposite ends of the lower side. One of the water exchange holes 5321 can be connected to a water source to fill the container 532 with cooling water, and when water needs to be changed, the other water exchange hole 5321 is opened to drain water. It should be noted that the cover 531 is provided with air holes, and when the air pressure in the oil and gas tank 5 is too high, the gas can be released from the air holes to relieve the air pressure in the oil and gas tank 5. The container 532 can also adopt the solution of circulating the coolant in the cooling pipeline 3 mentioned above.

[0041] Through the above technical solution, the lubricating oil heated up by the meshing rotation of the gears in the housing 1 is vaporized, and the vaporized lubricating oil enters the extension pipeline 4 through the air vents. Since the extension pipeline 4 is far away from the gears of the gearbox, its temperature is not affected by the operation of the gearbox gears. Therefore, part of the vaporized lubricating oil is liquefied and flows back into the housing 1 during the process of passing through the extension pipeline 4, and the remaining part of the vaporized lubricating oil enters the oil-gas tank 5 through the extension pipeline 4. The gaseous lubricating oil indirectly contacts the coolant in the container 532 in the oil-gas tank 5 to be liquefied, and flows into the extension pipeline 4 from the connecting port 511, and finally flows back into the housing 1.

[0042] It should be noted that the extension pipe 4 is made of a material with a large specific heat capacity, such as metal or glass. The tank body 52 of the oil and gas tank 5 is made of a transparent material such as acrylic, so that it is convenient to observe the internal condition of the oil and gas tank 5 at any time and to distinguish whether the tank body 52 is worn. In this embodiment, the tank body 52 is made of acrylic material, and the elasticity of the acrylic material can alleviate the high pressure caused by the gasification of the lubricating oil.

[0043] In another feasible embodiment, a platinum resistance thermometer is provided in the housing 1 to monitor the temperature in the housing 1. It is convenient to observe the temperature in the housing 1 of the gearbox at any time to determine whether the cooling device is working normally.

[0044] The present invention uses specific embodiments to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A gearbox cooling device, characterized in that: include: A box body, wherein the box body is provided with a pipeline outlet and a vent hole; A cooling pipeline, the cooling pipeline is arranged in the box body, the two ends of the cooling pipeline pass through the pipeline outlet to form a liquid inlet and a liquid outlet, and the cooling pipeline is used for cooling liquid to flow through; An oil and gas tank is connected to the air vent of the box body, the inner cavity of the oil and gas tank is connected to the inner cavity of the box body, the oil and gas tank is provided with an air hole, the heated and vaporized lubricating oil enters the oil and gas tank through the air vent, is cooled and liquefied in the oil and gas tank, and flows back into the box body.

2. The gearbox cooling device according to claim 1, characterized in that: An extension pipeline is also provided between the oil and gas tank and the box body, one end of the extension pipeline is communicated with the air vent of the box body, and the other end of the extension pipeline is communicated with the oil and gas tank.

3. The gearbox cooling device according to claim 2, characterized in that: The extension pipeline is made of metal or glass.

4. The gearbox cooling device according to claim 2, characterized in that: The oil and gas tank comprises a base connected to the extension pipeline, a tank body connected to the base, and a tank cover connected to an end of the tank body away from the base; The base is provided with a connection port, the inner side wall of the connection port is provided with a first thread, the outer side walls at both ends of the extension pipeline are provided with a second thread matching the first thread, and the oil and gas tank and the extension pipeline are connected by threads; The inner wall of the air vent is provided with the first thread, and the extension pipeline is connected to the air vent via threads.

5. The gearbox cooling device according to claim 4, characterized in that: The tank cover is provided with a cooling member, which includes a container with a water exchange port. The inner cavity of the container can be filled with cooling liquid, and the vaporized lubricating oil is cooled and liquefied after contacting the cooling member.

6. The gearbox cooling device according to claim 4, characterized in that: The can body and the base are detachably connected, and a sealing gasket is arranged between the can body and the base; the can body and the can cover are detachably connected, and a sealing gasket is arranged between the can body and the can cover.

7. The gearbox cooling device according to claim 1, characterized in that: The cooling pipeline is fixedly connected to the inner wall of the box body.

8. The gearbox cooling device according to claim 1, characterized in that: The tank body of the oil and gas tank is made of transparent material.

9. The gearbox cooling device according to claim 1, characterized in that: A temperature measuring device is provided inside the box, and an alarm is triggered if the temperature inside the box exceeds a preset temperature.

10. A gearbox, characterized in that: The gearbox cooling device comprises any one of claims 1 to 8, wherein: A transmission structure is arranged in the box, and the transmission structure comprises: A main shaft, the main shaft is inserted into the housing through a bearing, and the main shaft can be connected to a driving device; A transmission shaft is provided in the housing through a bearing, wherein the main shaft and the transmission shaft are connected in the housing through a speed change gear.

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