High-speed gear box for natural gas excess pressure power generation

Abstract

The utility model provides a high-speed gear box for natural gas excess pressure power generation, which relates to the technical field of gear boxes, and comprises a box body, first bearing seats and second bearing seats are respectively mounted on two sides in the box body, a low-speed shaft is mounted between the two first bearing seats, a high-speed shaft is mounted between the two second bearing seats, and the high-speed shaft is mounted between the two second bearing seats. The two ends of the high-speed shaft penetrate through the two sides of the box body correspondingly, and connecting shafts are installed at the ends of the high-speed shaft. The impellers can be installed at the two ends of the high-speed shaft, the power generation efficiency can be effectively improved, the operation cost is saved, the vibration measurement supports are installed on the two sides of the second gear, vibration data in the box body can be monitored in real time, manual measurement is not needed, and the use process is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of gear boxes, in particular to a high-speed gear box used for natural gas residual pressure power generation. Background Art

[0002] As a highly efficient energy resource, natural gas is widely used in various fields. Turbine expander generator sets can use natural gas to generate electricity. During the operation of turbine expander generator sets, the gearbox plays a vital role. The blades of the turbine expander are connected to the high-speed shaft of the gearbox, and the low-speed shaft is connected to the motor through a coupling, thereby converting natural gas energy into electrical energy. The gearbox is a common mechanical transmission component that can be used to adjust the speed, such as a gearbox proposed in patent application number 202211183071.0. The gearbox comprises: a box body; a motor, which is arranged at one side of the box body, and the rotor part of the motor extends into the box body; a low-speed shaft, which is arranged at one side of the box body close to the motor and connected to the rotor of the motor; a first gear is also arranged on the low-speed shaft, and the first gear is a gear with a helical gear structure; an intermediate shaft, which is arranged in the box body and spaced apart from the low-speed shaft, and a second gear is arranged on the intermediate shaft, and the second gear is meshed with the first gear, and the second gear is a gear with a helical gear structure; a high-speed shaft, which is arranged in the box body away from the low-speed shaft, and a third gear is arranged on the high-speed shaft and meshed with the second gear, and the third gear is a gear with a helical gear structure; wherein the motor drives the low-speed shaft and the first gear to rotate simultaneously; the first gear drives the second gear and the intermediate shaft to rotate; the second gear drives the third gear and the high-speed shaft to rotate.

[0003] During the use of the existing gearbox, in order to ensure the stability of the gearbox during operation, it is necessary to manually measure the vibration data inside the box, which is a cumbersome operation. In addition, only one end of the high-speed shaft can be connected to the blades, and the working efficiency is low. Therefore, we have made improvements to this and proposed a high-speed gearbox for natural gas residual pressure power generation. Utility Model Content

[0004] The main purpose of the utility model is to provide a high-speed gearbox for natural gas residual pressure power generation, which can effectively solve the problem that during the use of the gearbox, in order to ensure the stability of the gearbox during operation, it is necessary to manually measure the vibration data inside the box body, which is a relatively cumbersome operation. Moreover, only one end of the high-speed shaft can be connected to the blades, resulting in low working efficiency.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A high-speed gearbox for natural gas residual pressure power generation comprises a box body, wherein a first bearing seat and a second bearing seat are respectively installed on both sides of the interior of the box body, a low-speed shaft is installed between the two first bearing seats, and a high-speed shaft is installed between the two second bearing seats, and both ends of the high-speed shaft respectively pass through both sides of the box body and connecting shafts are installed at the ends.

[0007] Preferably, first sliding bearings are installed on both end shafts of the low-speed shaft, and the two first sliding bearings are respectively installed inside the first bearing seats at corresponding positions.

[0008] Preferably, a first gear is fixedly mounted on the shaft body of the low-speed shaft, and a second gear is mounted on the shaft body of the high-speed shaft, and the first gear and the second gear are meshed with each other.

[0009] Preferably, second sliding bearings are installed on both end shafts of the high-speed shaft, and two of the second sliding bearings are respectively installed inside the second bearing seats at corresponding positions.

[0010] Preferably, a first sealing cover is installed at the connection between one end of the low-speed shaft and the casing, and an end cover is installed at the connection between the other end of the low-speed shaft and the casing.

[0011] Preferably, a speed measuring gear is fixedly mounted on the shaft body of the low-speed shaft located inside the end cover.

[0012] Preferably, vibration measuring brackets are installed inside the box and on both sides of the second gear.

[0013] Preferably, second sealing covers are installed at the connection points between both ends of the high-speed shaft and the box body.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] Impellers can be installed at both ends of the high-speed shaft, which can effectively improve the power generation efficiency and save operating costs. Vibration measuring brackets are installed on both sides of the second gear, which can monitor the vibration data inside the box in real time without manual measurement, making it more convenient to use. The first sealing cover and the second sealing cover are respectively installed at the connection between the low-speed shaft and the high-speed shaft and the box, which can make the box have good sealing performance and effectively reduce the entry of external dust. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the internal structure of the utility model.

[0017] In the figure: 1. casing; 2. low-speed shaft; 201. first gear; 202. first sliding bearing; 3. first bearing seat; 4. high-speed shaft; 401. second gear; 402. second sliding bearing; 5. connecting shaft; 6. vibration measuring bracket; 7. first sealing cover; 8. second sealing cover; 9. end cover; 10. speed measuring gear; 11. second bearing seat. DETAILED DESCRIPTION

[0018] The following will be combined with 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 of 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.

[0019] like Figure 1 As shown, a high-speed gearbox for natural gas residual pressure power generation includes a box body 1, a first bearing seat 3 and a second bearing seat 11 are respectively installed on both sides of the inside of the box body 1, a low-speed shaft 2 is installed between the two first bearing seats 3, and a high-speed shaft 4 is installed between the two second bearing seats 11. Both ends of the high-speed shaft 4 respectively pass through both sides of the box body 1 and a connecting shaft 5 is installed at the end.

[0020] like Figure 1 As shown, first sliding bearings 202 are installed on both ends of the shaft body of the low-speed shaft 2, and the two first sliding bearings 202 are respectively installed inside the first bearing seat 3 at the corresponding positions. A first gear 201 is fixedly installed on the shaft body of the low-speed shaft 2, and a second gear 401 is installed on the shaft body of the high-speed shaft 4. The first gear 201 and the second gear 401 are meshed with each other. Second sliding bearings 402 are installed on both ends of the shaft body of the high-speed shaft 4, and the two second sliding bearings 402 are respectively installed inside the second bearing seat 11 at the corresponding positions. A first sealing cover 7 is installed at the connection between one end of the low-speed shaft 2 and the casing 1, and an end cover 9 is installed at the connection between the other end of the low-speed shaft 2 and the casing 1. A speed measuring gear 10 is fixedly installed on the shaft body of the low-speed shaft 2 located inside the end cover 9, and vibration measuring brackets 6 are installed inside the casing 1 and on both sides of the second gear 401. Second sealing covers 8 are installed at the connections between both ends of the high-speed shaft 4 and the casing 1.

[0021] The first sealing cover 7 and the second sealing cover 8 are respectively installed at the connection between the low-speed shaft 2 and the high-speed shaft 4 and the box body 1, so that the box body 1 has good sealing performance and can effectively reduce the entry of external dust. The speed measuring gear 10 inside the end cover 9 can measure the rotation speed of the low-speed shaft 2, which is more convenient during use.

[0022] The working principle of a high-speed gearbox for natural gas residual pressure power generation:

[0023] When in use, the impeller of the turbine unit is connected to the connecting shaft 5 at both ends of the high-speed shaft 4, and the low-speed shaft 2 is connected to the generator. Impellers can be installed at both ends of the high-speed shaft 4, which can effectively improve the power generation efficiency. Through the meshing transmission between the first gear 201 and the second gear 401, the rotation of the high-speed shaft 4 can drive the low-speed shaft 2 to rotate, thereby completing power generation. Vibration measuring brackets 6 are installed on both sides of the second gear 401, which can monitor the vibration data inside the box 1 in real time without manual measurement, which is more convenient during use.

[0024] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. A high-speed gearbox for natural gas residual pressure power generation, comprising a housing (1), characterized in that: A first bearing seat (3) and a second bearing seat (11) are respectively installed on both sides of the interior of the housing (1); a low-speed shaft (2) is installed between the two first bearing seats (3); a high-speed shaft (4) is installed between the two second bearing seats (11); and both ends of the high-speed shaft (4) respectively pass through both sides of the housing (1) and a connecting shaft (5) is installed at the end.

2. A high-speed gearbox for natural gas residual pressure power generation according to claim 1, characterized in that: First sliding bearings (202) are installed on both ends of the shaft body of the low-speed shaft (2), and the two first sliding bearings (202) are respectively installed inside the first bearing seat (3) at corresponding positions.

3. The high-speed gearbox for natural gas residual pressure power generation according to claim 1, characterized in that: A first gear (201) is fixedly mounted on the shaft body of the low-speed shaft (2), and a second gear (401) is mounted on the shaft body of the high-speed shaft (4), wherein the first gear (201) and the second gear (401) are meshed with each other.

4. The high-speed gearbox for natural gas residual pressure power generation according to claim 1, characterized in that: Second sliding bearings (402) are installed on the shaft bodies at both ends of the high-speed shaft (4), and the two second sliding bearings (402) are respectively installed inside the second bearing seat (11) at corresponding positions.

5. The high-speed gearbox for natural gas residual pressure power generation according to claim 1, characterized in that: A first sealing cover (7) is installed at a connection between one end of the low-speed shaft (2) and the casing (1), and an end cover (9) is installed at a connection between the other end of the low-speed shaft (2) and the casing (1).

6. The high-speed gearbox for natural gas residual pressure power generation according to claim 5, characterized in that: A speed measuring gear (10) is fixedly mounted on the shaft of the low-speed shaft (2) located inside the end cover (9).

7. The high-speed gearbox for natural gas residual pressure power generation according to claim 1, characterized in that: Vibration measuring brackets (6) are installed inside the box (1) and on both sides of the second gear (401).

8. The high-speed gearbox for natural gas residual pressure power generation according to claim 1, characterized in that: Second sealing covers (8) are installed at the connection points between the two ends of the high-speed shaft (4) and the box body (1).

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