A synchronous generator axial shortening structure

Abstract

This utility model belongs to the field of generator technology, and particularly relates to an axial shortening structure for a synchronous generator. It includes a fixed base and a shortening shell installed through one side of the fixed base. Speed ​​measuring slots are fixedly arranged on both sides inside the shortening shell. A reversing shaft is movably installed between the two ends inside the speed measuring slots. A connecting slot is fixedly arranged on the other side of the reversing shaft. The speed measuring slots are installed through the shortening shell, then the reversing shaft is installed through the speed measuring slots, then the connecting slot is installed through the reversing shaft, then the control end is installed through the shortening shell, and then the reversing control block and speed control block are electrically installed through the control end. The trapezoidal connecting slot facilitates the connection and clamping of different motor shafts. Then, by utilizing the reversing shaft, the speed and direction can be changed through convenient cooperation between the reversing control block and the speed control block, thereby improving the ease of use of the structure.

Description

Technical Field

[0001] This utility model belongs to the field of generator technology, and in particular relates to an axial shortening structure for a synchronous generator. Background Technology

[0002] The external characteristics of a synchronous generator generally refer to the curve of the generator terminal voltage change when the load current changes under the condition of constant internal electromotive force. It mainly tests the generator's longitudinal axis synchronous reactance, that is, the generator's internal impedance, which is an important indicator of the synchronous generator's load-carrying capacity. However, synchronous generators mostly use thyristor fast excitation and damping windings, and their longitudinal axis synchronous reactance is mostly a transient value, much smaller than the steady-state value. They are directly bolted to the shaft through a transition plate, eliminating the need for traditional flexible couplings and reducing the space occupied by intermediate transmission structures. When connecting synchronous generators, if it is necessary to change the direction of rotation and speed, the generator can only be adjusted, which reduces the practicality of the shortened structure. Therefore, an axial shortening structure for synchronous generators is proposed.

[0003] For example, Chinese patent CN216490167U discloses a synchronous generator with shortened axial length, solving the technical problem of how to shorten the axial length of a synchronous generator. The non-drive end section of the synchronous generator shaft is a hollow shaft. An exciter rotor and an auxiliary exciter rotor are respectively arranged on the hollow shaft end section. A positive rotating rectifier module and a negative rotating rectifier module are respectively arranged in a disc-shaped groove. The lead wires of the three-phase windings in the auxiliary exciter stator are connected to the input terminal of an automatic voltage regulator. The output terminal of the automatic voltage regulator is connected to the exciter pole coil in the exciter stator. The lead wires of the three-phase coils in the exciter rotor pass through the hollow shaft end section and are connected to the input terminals of the positive rotating rectifier module and the negative rotating rectifier module.

[0004] The existing technical documents have the following problems:

[0005] Existing technical documents have several drawbacks in practical use. For example, when connecting to a synchronous generator, changes in direction and speed require adjustments to the generator itself, reducing the practicality of the shortening structure. Furthermore, the connection between the shortening mechanism and external equipment is secured with a single bolt, leaving the connection exposed to air and susceptible to moisture and dust corrosion, thus reducing the stability of the connection. Therefore, we propose an axial shortening structure for a synchronous generator. Utility Model Content

[0006] The purpose of this utility model is to address the aforementioned technical problems by providing an axial shortening structure for a synchronous generator, which facilitates the modification of the motor's speed and direction via a reversing shaft and enables the closure of the connection.

[0007] In view of this, the present invention provides an axial shortening structure for a synchronous generator, including a fixed base, and further comprising: a shortening shell through which a shortening shell is installed on one side of the fixed base; speed measuring grooves are fixedly provided on both sides inside the shortening shell; a reversing shaft is movably installed between the two ends inside the speed measuring grooves; a connecting groove is fixedly provided on the other side of the reversing shaft; a control end is fixedly installed on the top of the shortening shell; an outer connecting rod through which a shortening shell is installed on one side; a sealing bushing is sleeved on the surface of the outer connecting rod; fixed sleeves are fixedly installed at both ends of the outer connecting rod; sliders through which a slider is installed; a threaded cylinder is fixedly installed on one side of the slider; and a connecting base is fixedly installed on the top of the control end.

[0008] Based on the above structure, the reversing shaft facilitates the use of the reversing control block and the speed control block to change the speed and direction. The sealing bushing increases the sealing at the connection between the outer connecting rod and the shortened housing. Then, two fastening bolts and the fixing sleeve are used to fasten the external equipment, and the threaded cylinder is used to tighten and seal the connection.

[0009] Preferably, a reversing control block is fixedly installed at the bottom of the control terminal, and a speed control block is fixedly installed on one side of the reversing control block.

[0010] Preferably, a fastening bolt is installed through the top of the fixing sleeve, and the fastening bolt is made of stainless steel.

[0011] Preferably, a pressure-reducing pad is fixedly installed on the other side of the fixing seat, and a gasket is fixedly installed on one side of the fixing seat.

[0012] Preferably, some of the gaskets are fitted with through-hole fixing screws, which are made of stainless steel.

[0013] Preferably, a connecting bolt is installed through the top of the connecting seat, and a pre-analysis end is fixedly installed between the connecting bolts.

[0014] Preferably, an alarm is fixedly mounted on the top of the pre-analysis end.

[0015] The beneficial effects of this utility model are:

[0016] 1. An axial shortening structure for a synchronous generator, wherein a speed measuring slot is installed through a shortening shell, a reversing shaft is installed through the speed measuring slot, a connecting slot is installed through the reversing shaft, a control terminal is installed through the shortening shell, and a reversing control block and a speed control block are electrically installed through the control terminal. The trapezoidal connecting slot facilitates the connection and clamping of different motor shafts. Then, by utilizing the reversing shaft, the speed and direction can be changed through the convenient cooperation of the reversing control block and the speed control block, thereby improving the ease of use of the structure.

[0017] 2. An axial shortening structure for a synchronous generator, comprising installing a fixed sleeve via an external connecting rod, then installing fastening bolts via the fixed sleeve, then installing a sealing bushing via the external connecting rod, then installing a slider via the external connecting rod, and finally installing a threaded cylinder via the slider. When connecting to external equipment, the sealing bushing increases the sealing at the connection between the external connecting rod and the shortening shell. Two fastening bolts and the fixed sleeve are then used to securely connect to the external equipment, and the threaded cylinder further tightens and seals the connection, thereby reducing the erosion caused by moisture and dust at the connection and improving the stability of the connection. Attached Figure Description

[0018] Figure 1 This is a perspective view of the entire front section of this utility model;

[0019] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 3 This is a partial structural diagram of the shortened shell in this utility model;

[0021] Figure 4 This is a partial structural diagram of the outer connecting rod in this utility model;

[0022] Figure 5 This is a partial perspective view of the fixing base in this utility model;

[0023] Figure 6 This is a partial perspective view of the connector in this utility model.

[0024] The markings in the diagram are as follows:

[0025] 1. Fixed base; 101. Pressure relief pad; 102. Gasket; 103. Fixing screw; 2. Shortening shell; 201. Speed ​​measuring groove; 202. Reversing shaft; 203. Connecting groove; 204. Control end; 205. Reversing control block; 206. Speed ​​control block; 3. External connecting rod; 301. Sealing bushing; 302. Fixed sleeve; 303. Fastening bolt; 304. Slider; 305. Threaded cylinder; 4. Connecting base; 401. Connecting bolt; 402. Pre-analysis end; 403. Alarm. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example 1:

[0028] Please see Figures 1-6 A synchronous generator axial shortening structure includes a fixed base 1, and further includes: a shortening shell 2 through-mounted on one side of the fixed base 1; speed measuring grooves 201 fixedly arranged on both sides inside the shortening shell 2; a reversing shaft 202 movably mounted between the two ends inside the speed measuring grooves 201; a connecting groove 203 fixedly arranged on the other side of the reversing shaft 202; a control end 204 fixedly mounted on the top of the shortening shell 2; and a reversing control block 205 fixedly mounted on the bottom end inside the control end 204. A speed control block 206 is fixedly mounted on one side. An outer connecting rod 3 is installed through one side of the shortened shell 2. A sealing bushing 301 is sleeved on the surface of the outer connecting rod 3. Fixed sleeves 302 are fixedly mounted at both ends of the outer connecting rod 3. A fastening bolt 303 is installed through the top of the fixed sleeve 302. The fastening bolt 303 is made of stainless steel. A slider 304 is installed through both ends of the outer connecting rod 3. A threaded cylinder 305 is fixedly mounted on one side of the slider 304. A connecting seat 4 is fixedly mounted on the top of the control end 204.

[0029] In this utility model, the speed measuring slot 201 is installed through the shortened shell 2, then the reversing shaft 202 is installed through the speed measuring slot 201, then the connecting slot 203 is installed through the reversing shaft 202, then the control end 204 is installed through the shortened shell 2, and then the reversing control block 205 and the speed control block 206 are electrically installed through the control end 204. The trapezoidal connecting slot 203 facilitates the connection and clamping of different motor shafts. Then, by utilizing the function of the reversing shaft 202, and with the convenient cooperation of the reversing control block 205 and the speed control block 206, the speed and direction can be changed, thereby improving the ease of use of the structure. The outer connecting rod 3 is used to install the fixed sleeve 302, then the fixed sleeve 302 is used to install the fastening bolt 303, then the outer connecting rod 3 is used to install the sealing bushing 301, then the outer connecting rod 3 is used to install the slider 304, and then the slider 304 is used to install the threaded cylinder 305. When connecting to external equipment, the sealing bushing 301 is used to increase the sealing at the connection between the outer connecting rod 3 and the shortened shell 2. Then, the two fastening bolts 303 and the fixed sleeve 302 are used to fasten the connection to the external equipment, and the threaded cylinder 305 is used to tighten and seal the connection, thereby reducing the corrosion of the connection by moisture and dust and improving the stability of the connection.

[0030] Example 2:

[0031] Please see Figures 1-6A synchronous generator axial shortening structure includes a fixed base 1, and further includes: a pressure reducing pad 101 fixedly installed on the other side of the fixed base 1; a gasket 102 fixedly installed on one side of the fixed base 1; fixing screws 103, made of stainless steel, are installed through some of the gaskets 102; a shortening shell 2 is installed through one side of the fixed base 1; speed measuring grooves 201 are fixedly arranged on both sides inside the shortening shell 2; a reversing shaft 202 is movably installed between the two ends inside the speed measuring grooves 201; a connecting groove 203 is fixedly arranged on the other side of the reversing shaft 202; and a control terminal 2 is fixedly installed on the top of the shortening shell 2. 04. A reversing control block 205 is fixedly installed at the bottom of the control end 204. A speed control block 206 is fixedly installed on one side of the reversing control block 205. An outer connecting rod 3 is installed through one side of the shortened shell 2. A sealing bushing 301 is sleeved on the surface of the outer connecting rod 3. Fixed sleeves 302 are fixedly installed at both ends of the outer connecting rod 3. A fastening bolt 303 is installed through the top of the fixed sleeve 302. The fastening bolt 303 is made of stainless steel. A slider 304 is installed through both ends of the outer connecting rod 3. A threaded cylinder 305 is fixedly installed on one side of the slider 304. A connecting seat 4 is fixedly installed on the top of the control end 204.

[0032] In this utility model, the pressure reducing pad 101 is installed by the fixed base 1, and then the fixed base 1 is installed by the gasket 102 and the fixing screw 103. Then, the shortened shell 2 is directly connected to the synchronous generator by the gasket 102 and the fixing screw 103. Then, the pressure reducing pad 101 is used to reduce the pressure at the connection and improve the sealing of the connection.

[0033] Example 3:

[0034] Please see Figures 1-6A synchronous generator axial shortening structure includes a fixed base 1, and further includes: a pressure reducing pad 101 fixedly installed on the other side of the fixed base 1; a gasket 102 fixedly installed on one side of the fixed base 1; fixing screws 103, made of stainless steel, are installed through some of the gaskets 102; a shortening shell 2 is installed through one side of the fixed base 1; speed measuring grooves 201 are fixedly arranged on both sides inside the shortening shell 2; a reversing shaft 202 is movably installed between the two ends inside the speed measuring grooves 201; a connecting groove 203 is fixedly arranged on the other side of the reversing shaft 202; a control end 204 is fixedly installed on the top of the shortening shell 2; a reversing control block 205 is fixedly installed at the bottom inside the control end 204; and a reversing control block 205 is fixedly installed. A speed control block 206 is fixedly mounted on one side of the block 205. An outer connecting rod 3 is installed through one side of the shortened shell 2. A sealing bushing 301 is sleeved on the surface of the outer connecting rod 3. Fixed sleeves 302 are fixedly mounted at both ends of the outer connecting rod 3. A fastening bolt 303 is installed through the top of the fixed sleeve 302. The fastening bolt 303 is made of stainless steel. A slider 304 is installed through both ends of the outer connecting rod 3. A threaded cylinder 305 is fixedly mounted on one side of the slider 304. A connecting seat 4 is fixedly mounted on the top of the control end 204. A connecting bolt 401 is installed through the top of the connecting seat 4. A pre-analysis end 402 is fixedly mounted between the connecting bolts 401. An alarm 403 is fixedly mounted on the top of the pre-analysis end 402.

[0035] In this utility model, the connecting seat 4 is installed through the connecting bolt 401, then the pre-analysis end 402 is installed through the connecting seat 4, and then the alarm 403 is electrically connected through the pre-analysis end 402. The pre-analysis end 402 is used to pre-analyze the rotational speed of the shaft. When the rotational speed is abnormal, the alarm 403 is used to sound an alarm to remind the staff to stop the equipment.

[0036] Working principle: The pressure reducing pad 101 is installed through the fixed base 1. Then, the fixed base 1 is installed through the shim 102 and the fixing screw 103. Next, the shortened shell 2 is directly connected to the synchronous generator using the shim 102 and the fixing screw 103. Then, the speed measuring slot 201 is installed through the shortened shell 2. Next, the reversing shaft 202 is installed through the speed measuring slot 201. Then, the connecting slot 203 is installed through the reversing shaft 202. Next, the control terminal 204 is installed through the shortened shell 2. Then, the reversing control block 205 and the speed control block 206 are connected through the control terminal 204. Electrical installation utilizes the trapezoidal connecting groove 203 to facilitate the connection and clamping of different motor shafts. The fixing sleeve 302 is installed via the outer connecting rod 3, followed by the fastening bolt 303. The sealing bushing 301 is then installed via the outer connecting rod 3, followed by the slider 304. The threaded cylinder 305 is then installed via the slider 304. The connecting seat 4 is installed via the connecting bolt 401, followed by the pre-analysis end 402. Finally, the alarm 403 is electrically connected via the pre-analysis end 402.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A synchronous generator axial shortening structure comprising a fixed seat (1), characterized in that, Also includes: A shortening shell (2) is installed through one side of the fixed base (1). Speed ​​measuring grooves (201) are fixedly arranged on both sides inside the shortening shell (2). A reversing shaft (202) is movably installed between the two ends inside the speed measuring groove (201). A connecting groove (203) is fixedly arranged on the other side of the reversing shaft (202). A control end (204) is fixedly installed on the top of the shortening shell (2). An outer connecting rod (3) is installed through one side of the shortening shell (2). A sealing bushing (301) is sleeved on the surface of the outer connecting rod (3). Fixed sleeves (302) are fixedly installed at both ends of the outer connecting rod (3). A slider (304) is installed through both ends of the outer connecting rod (3). A threaded cylinder (305) is fixedly installed on one side of the slider (304). A connecting base (4) is fixedly installed on the top of the control end (204).

2. The axial shortening structure of a synchronous generator according to claim 1, characterized in that: A reversing control block (205) is fixedly installed at the bottom of the control terminal (204), and a speed control block (206) is fixedly installed on one side of the reversing control block (205).

3. The axial shortening structure of a synchronous generator according to claim 1, characterized in that: A fastening bolt (303) is installed through the top of the fixing sleeve (302), and the fastening bolt (303) is made of stainless steel.

4. The axial shortening structure of a synchronous generator according to claim 1, characterized in that: A pressure-reducing pad (101) is fixedly installed on the other side of the fixed base (1), and a gasket (102) is fixedly installed on one side of the fixed base (1).

5. The axial shortening structure of a synchronous generator according to claim 4, characterized in that: Some of the gaskets (102) are fitted with fixing screws (103), which are made of stainless steel.

6. The axial shortening structure of a synchronous generator according to claim 1, characterized in that: A connecting bolt (401) is installed through the top of the connecting seat (4), and a pre-analysis end (402) is fixedly installed between the connecting bolts (401).

7. The axial shortening structure of a synchronous generator according to claim 6, characterized in that: An alarm (403) is fixedly mounted on the top of the pre-analysis end (402).

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