Bidirectional direct-drive sleeve type power generation transmission system for gravity energy storage

Abstract

The utility model relates to a two-way direct-drive sleeve type power generation transmission system for gravity energy storage. The two-way direct-drive sleeve type power generation transmission system comprises a double-output-shaft power generation motor (1), a gearbox (5) and a traction shaft (10). The two ends of the double-output-shaft generator motor (1) are respectively connected with a high-speed shaft (3) of one gearbox (5) through a first coupler (2), and a low-speed shaft (6) of each gearbox (5) is sequentially connected with one or more traction shafts (10) through a second coupler (7). Furthermore, a brake (4) is arranged on the high-speed shaft (3) of each gearbox (5); each winding drum (11) is sleeved on a traction shaft (10), and each traction shaft (10) is connected with the winding drum (11) through a pin key (9); and two ends of each traction shaft (10) are respectively provided with a bearing box (8). The bidirectional direct-drive sleeve type power generation transmission system has the advantages of being simple in structure, good in expansibility, flexible in arrangement, reliable in operation and the like, and is very suitable for the field of gravity energy storage.

Description

Technical Field

[0001] The utility model belongs to the technical field of gravity energy storage, and in particular relates to a bidirectional direct-drive sleeve-type power generation transmission system for gravity energy storage. Background Art

[0002] Each working cycle of the gravity energy storage power generation system includes a process of lifting and lowering a heavy object. When the power grid is abundant, the gravity energy storage power generation system drives the drum to drive the wire rope to lift the heavy object to a high place for storage, so as to achieve the purpose of converting electrical energy into potential energy for storage. When the power grid is short of power, the heavy object falls from a high place to a low place, and in this process drives the traction shaft to rotate, and then drives the generator to generate electricity, so as to achieve the purpose of converting the potential energy of the heavy object into electrical energy to supply the grid users.

[0003] At present, the transmission drive systems used internationally and domestically generally have the problems of complex systems, low flexibility and high costs. The invention patent disclosure CN114962190A discloses a dual-axis transmission power generation drive system based on gravity energy storage, but the system is highly complex, has low operational reliability and low expansion and layout flexibility.

[0004] In recent years, with the continuous development of the domestic gravity energy storage field, there is a need for a transmission drive system that is reliable, flexible, easy to expand, applicable to many application scenarios, and has a low system complexity to reduce the construction cost of the gravity energy storage system and improve the operating reliability and flexibility of the gravity energy storage system. Utility Model Content

[0005] In view of the problems existing in the prior art, the utility model provides a bidirectional direct-drive sleeve-type power generation transmission system for gravity energy storage, which can effectively reduce the construction cost of the energy storage system and improve the reliability and flexibility of the system operation.

[0006] The utility model is realized by the following technical solutions:

[0007] A bidirectional direct-drive sleeve-type power generation transmission system for gravity energy storage includes a double-output shaft generator motor, a gearbox and a traction shaft; the two ends of the double-output shaft generator motor are respectively connected to a high-speed shaft of a gearbox through a first coupling, and the low-speed shaft of each gearbox is sequentially connected to one or more traction shafts through a second coupling.

[0008] A further improvement of the utility model is that a brake is respectively installed on the high-speed shaft of each gearbox, and the brake is actuated when the heavy object moves to a specified position, so as to ensure that the stopped state is maintained.

[0009] A further improvement of the utility model is that it also includes a reel, each of which is sleeved on a traction shaft, each traction shaft is connected to the reel through a pin key, and the reel is used to fix and drive the steel wire rope to pull the heavy object block up.

[0010] A further improvement of the utility model is that the connection mode between each traction shaft and the reel can be replaced by bolt connection or welding instead of pin-key connection.

[0011] A further improvement of the utility model is that bearing boxes are respectively arranged at both ends of the traction shaft.

[0012] A further improvement of the utility model is that two gearboxes are symmetrically arranged on both sides of the double-output shaft generator motor.

[0013] A further improvement of the utility model is that a plurality of traction shafts are symmetrically arranged on both sides of the double-output shaft generator motor.

[0014] A further improvement of the utility model is that the two gearboxes are planetary gearboxes or parallel axis gearboxes.

[0015] A further improvement of the utility model is that when a low-speed double-shaft generator motor is used, the two gearboxes connected thereto can be eliminated, and the double-shaft generator motor is directly connected to the traction shaft via a coupling.

[0016] A further improvement of the utility model is that both the first coupling and the second coupling can be replaced by flange connections.

[0017] Compared with the prior art, the utility model has at least the following beneficial technical effects:

[0018] In the utility model, by directly connecting the two ends of the double-output shaft generator motor with the gearbox and the traction shaft, the power can be transmitted stably and reliably between the double-output shaft generator motor and the traction shaft. When the energy storage system stores energy, the double-output shaft generator motor drives the traction shaft and drives the steel wire rope to pull the weight block to a high place through the drum, so as to convert the electrical energy into the potential energy of the weight for storage and standby use. When the energy storage system releases energy, the weight block descends and drives the traction shaft and the generator motor to move through the steel wire rope, and the generator motor generates electricity.

[0019] Furthermore, in the utility model, each double-output shaft generator motor and a corresponding row of traction shafts constitute an independent power transmission module. According to the actual needs of different projects, the traction shafts of each group of power transmission modules can be continuously extended to both sides of the generator motor through a coupling to achieve any combination of multiple traction shafts.

[0020] Furthermore, the brake in the utility model can be selected in different types, installation positions, and installation quantities according to the requirements of different projects.

[0021] In summary, the bidirectional direct-drive sleeve-type power generation transmission system of the utility model has the characteristics of simple structure, flexible layout, good scalability, reliable operation, etc., and is very suitable for use in the field of gravity energy storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a bidirectional direct-drive sleeve-type power generation transmission system for gravity energy storage described in an example of the utility model.

[0023] Description of reference numerals:

[0024] 1- double-output shaft generator motor, 2- first coupling, 3- high-speed shaft, 4- brake, 5- gearbox, 6- low-speed shaft, 7- second coupling, 8- bearing box, 9- pin key, 10- traction shaft, 11- reel. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below in conjunction with specific implementation methods, which are intended to explain the present invention rather than to limit it.

[0026] like Figure 1 As shown, the bidirectional direct-drive sleeve-type power generation transmission system for gravity energy storage provided by the utility model includes a double-output shaft generator motor 1, a gearbox 5 and a traction shaft 10; the two ends of the double-output shaft generator motor 1 are respectively connected to a high-speed shaft 3 of a gearbox 5 through a first coupling 2, and the low-speed shaft 6 of each gearbox 5 is connected to one or more traction shafts 10 in sequence through a second coupling 7.

[0027] Each drum 11 is mounted on the traction shaft 10, and each traction shaft 10 is connected to the drum 11 via a pin key 9. The drum 11 is used to fix and drive the steel wire rope to pull the weight block upward.

[0028] A brake 4 is installed on the high-speed shaft 3 of each gearbox 5. The brake 4 is activated when the weight moves to a specified position and ensures that the shaft system remains in a stopped state.

[0029] Each double-output shaft generator motor 1 forms a set of bidirectional direct-drive sleeve-type power generation transmission system together with the connected traction shaft 10 through the gearbox 5. In this way, the double-output shaft generator motor 1 can drive the traction shafts 10 at both ends to move synchronously.

[0030] Preferably, bearing boxes 8 are respectively provided at both ends of the traction shaft 10 to support the traction shaft and reduce friction when the traction shaft rotates.

[0031] Preferably, the two gearboxes 5 are symmetrically arranged on both sides of the dual-output shaft generator motor 1.

[0032] Preferably, a plurality of traction shafts 10 are symmetrically arranged on both sides of the dual-output shaft generator motor 1 .

[0033] Preferably, the two gearboxes 5 can be either planetary gearboxes or parallel axis gearboxes.

[0034] Preferably, when a low-speed dual-shaft generator motor 1 is used, the two gearboxes 5 connected thereto can be eliminated, and the dual-shaft generator motor 1 is directly connected to the traction shaft 10 through a coupling. At this time, a brake can be installed on the traction shaft 10.

[0035] Preferably, the connection mode between each traction shaft 10 and the reel 11 can be replaced by bolt connection or welding instead of the pin key 9 connection.

[0036] Preferably, both the first coupling 2 and the second coupling 7 can be replaced by flange connections.

[0037] The bidirectional direct-drive sleeve-type power generation transmission system for gravity energy storage provided by the utility model comprises the following steps during operation:

[0038] Step 1: When the gravity energy storage system starts to store energy, the dual-shaft generator motor drives the gearbox to run synchronously, which in turn drives the traction shafts and drums to rotate synchronously. Each drum drives the wire rope to pull the weight up, completing the purpose of converting the surplus power of the power grid into the potential energy storage of the weight. When the weight rises to the specified position, the brake on the high-speed shaft of the gearbox acts synchronously to keep the shaft system stopped, and the energy storage process of the unit is completed.

[0039] Step 2: When the gravity energy storage system starts to release energy to generate electricity, the brake on the high-speed shaft of the gearbox opens synchronously, and each weight block drives the wire rope drive drum and the traction shaft to rotate. The traction shaft drives the double-output shaft generator motor to rotate through the gearbox, and the double-output shaft generator motor starts to generate electricity, and the potential energy of the gravity block is converted into electrical energy. When the weight block falls to the specified position, the brake on the high-speed shaft of the gearbox acts synchronously, so that the shaft system remains stopped, and the energy release and power generation process is completed.

[0040] The above description is only a preferred specific implementation method of the utility model, and does not limit the patent scope of the utility model. Any equivalent structure or equivalent process transformation or application to multiple shaft systems made using the contents of the utility model specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the utility model.

Claims

1. A bidirectional direct-drive sleeve-type power generation transmission system for gravity energy storage, characterized in that: It comprises a double-output shaft generator motor (1), a gearbox (5) and a traction shaft (10); The two ends of the dual-output shaft generator motor (1) are respectively connected to a high-speed shaft (3) of a gearbox (5) through a first coupling (2), and the low-speed shaft (6) of each gearbox (5) is sequentially connected to one or more traction shafts (10) through a second coupling (7).

2. The bidirectional direct-drive sleeve-type power generation transmission system for gravity energy storage according to claim 1 is characterized in that: A brake (4) is respectively installed on the high-speed shaft (3) of each gearbox (5). The brake (4) is activated when the heavy object moves to a specified position, and can ensure that the stopped state is maintained.

3. The bidirectional direct-drive sleeve-type power generation transmission system for gravity energy storage according to claim 1 is characterized in that: It also includes a reel (11), each reel (11) is sleeved on the traction shaft (10), each traction shaft (10) is connected to the reel (11) through a pin key (9), and the reel (11) is used to fix and drive the steel wire rope to pull the heavy object block upward.

4. The bidirectional direct-drive sleeve-type power generation transmission system for gravity energy storage according to claim 3 is characterized in that: The connection mode between each traction shaft (10) and the reel (11) can be replaced by bolt connection or welding instead of pin key connection (9).

5. The bidirectional direct-drive sleeve-type power generation transmission system for gravity energy storage according to claim 1, characterized in that: Bearing boxes (8) are respectively arranged at both ends of the traction shaft (10).

6. The bidirectional direct-drive sleeve-type power generation transmission system for gravity energy storage according to claim 1, characterized in that: The two gearboxes (5) are symmetrically arranged on both sides of the double-output shaft generator motor (1).

7. The bidirectional direct-drive sleeve-type power generation transmission system for gravity energy storage according to claim 1, characterized in that: A plurality of traction shafts (10) are symmetrically arranged on both sides of the double-output shaft generator motor (1).

8. The bidirectional direct-drive sleeve-type power generation transmission system for gravity energy storage according to claim 1, characterized in that: The two gearboxes (5) are of the type of planetary gearboxes or parallel shaft gearboxes.

9. The bidirectional direct-drive sleeve-type power generation transmission system for gravity energy storage according to claim 1, characterized in that: When a low-speed dual-shaft generator motor (1) is used, the two gearboxes (5) connected thereto can be eliminated, and the dual-shaft generator motor (1) is directly connected to the traction shaft (10) via a coupling.

10. The bidirectional direct-drive sleeve-type power generation transmission system for gravity energy storage according to claim 1, characterized in that: Both the first coupling (2) and the second coupling (7) can be replaced by flange connections.

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