Gas turbine static frequency converter switching switch cabinet

Abstract

A gas turbine static frequency converter switching switch cabinet disclosed by the present invention comprises a cabinet body, the cabinet body is internally provided with a knife switch assembly, the knife switch assembly comprises a knife switch seat, a movable contact knife and a knife switch handle, the top of the knife switch handle is provided with a traction mechanism, the traction mechanism comprises a control assembly and a traction assembly, and the front surface of the traction mechanism is provided with a mounting plate. A mounting mechanism is arranged on the front face of the mounting plate, the control assembly comprises a controller, the traction assembly comprises a traction rod and a rotating motor, and a connecting rope is arranged between the traction rod and the rotating motor; through the design of the knife switch assembly, the mounting mechanism and the traction mechanism, when the electrical equipment is in case, the console can send a signal to the controller to control the output end of the rotating motor to rotate, so that a connecting rope is wound, and a traction rod is pulled; and the traction rod drives the movable contact knife to rotate in a direction far away from the knife switch seat through the knife switch grip, so that the switch-off protection is carried out before a worker arrives at the cabinet body.

Description

Technical Field

[0001] The invention relates to the technical field of static frequency converter switch cabinets, and in particular to a static frequency converter switching switch cabinet for a combustion engine. Background Art

[0002] A static frequency converter is a current source type synchronous motor variable frequency drive device composed of thyristors. In a gas turbine unit, a static frequency converter is required to assist in increasing the speed of the unit. Usually, the static frequency converter is placed in a switching switch cabinet, and a variety of devices are placed in the switch. For the safety of electrical equipment, the electrical equipment will be remotely connected to the control device. When a problem occurs with the electrical equipment, the electrical equipment terminal can be remotely controlled to operate. However, among the electrical equipment, some electrical equipment is controlled by a knife switch. Therefore, when a problem occurs with such electrical equipment, the console will receive information, and then the staff will need to rush to the switch cabinet and open the cabinet door to manually disconnect the knife. The time interval during this period will cause further damage to the electrical equipment. Summary of the invention

[0003] The object of the present invention is to provide a gas turbine static frequency converter switching switch cabinet to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a switching cabinet for a static frequency converter of a gas turbine, comprising a cabinet body, a placement plate for placing electronic equipment is arranged inside the cabinet body, a knife assembly for controlling the start and stop of the electrical equipment is arranged inside the cabinet body, the knife assembly comprises a knife seat, a moving contact knife and a knife handle, a traction mechanism for pulling the knife handle is arranged on the top of the knife handle, the traction mechanism comprises a control assembly and a traction assembly, a mounting plate for installing the traction mechanism is arranged on the front of the traction mechanism, a mounting mechanism for adjusting the height of the mounting plate is arranged on the front of the mounting plate, the control assembly comprises a controller, a control system is arranged inside the controller, the traction assembly comprises a traction rod and a rotating motor, and a connecting rope for connecting the traction rod and the rotating motor is arranged between the traction rod and the rotating motor.

[0005] Preferably, a cabinet door for closing the cabinet is provided on the front of the cabinet, the knife switch assembly is arranged on the front of the electrical equipment, the two ends of the placement plate are respectively fixedly connected to the two sides of the inner wall of the cabinet, the bottom of the movable contact knife is hinged to the knife switch seat, and the top of the movable contact knife is fixedly connected to the bottom end of the knife switch handle.

[0006] Preferably, a circular slot is provided on one side of the top of the gate knife handle, one end of the pull rod is inserted and connected with the circular slot, a first cavity is provided inside the one end of the pull rod, a limiting hole is provided on the front of the inner wall of the first cavity, and a limiting block is inserted and connected inside the limiting hole.

[0007] Preferably, the pulling rod is L-shaped, the back side of the limiting block is fixedly connected to a first baffle plate, and the back side of the first baffle plate is provided with a first elastic block.

[0008] Preferably, the output end of the rotating motor is fixedly connected to a winding wheel, one end of the connecting rope is fixedly connected to the outer wall of the winding wheel, the other end of the connecting rope is fixedly connected to the other end of the pulling rod, the controller is electrically connected to the rotating motor, and the front sides of the controller and the rotating motor are respectively fixedly connected to the back side of the mounting plate.

[0009] Preferably, the mounting mechanism includes a guide assembly and an adjustment assembly, the guide assembly includes a guide frame, the adjustment assembly includes an adjustment rod, a mounting groove is provided on the front side of the adjustment rod, circular holes are provided on both sides of the front side of the mounting plate, mounting bolts are inserted and connected inside the circular holes, and the mounting bolts are inserted and connected to the mounting grooves.

[0010] Preferably, a guide groove is provided on one side of the guide frame, a locking piece is slidably inserted and connected inside the guide groove, and a connecting piece for connecting with the locking piece is provided at the end of the adjusting rod.

[0011] Preferably, the locking member includes an adjusting block, a second cavity is opened inside the adjusting block, an insertion hole is opened on the back side of the inner wall of the second cavity, a locking block is inserted and connected inside the insertion hole, a third baffle is fixedly connected to the front side of the locking block, a second elastic block is arranged on the front side of the third baffle, a connecting slot is opened on one side of the adjusting block, and a locking hole is opened on the back side of the inner wall of the guide groove.

[0012] Preferably, a third cavity is opened inside one end of the adjusting rod, a connecting hole is opened on one side of the inner wall of the third cavity, a movable hole is opened on the top of the inner wall of the third cavity, the connecting piece includes a plug-in block, the plug-in block is interpenetratingly connected to the connecting hole, one end of the plug-in block is fixedly connected to a second baffle, one end of the second baffle is fixedly connected to the connecting block, the outer wall of the connecting block is fixedly connected to a rotating rod, and the rotating rod is interpenetratingly connected to the movable hole.

[0013] Preferably, the control system includes a receiving module, an analyzing module and an output module; The receiving module is used to receive the signal sent by the console; The analysis module is used to analyze the content of the received signal; The output module is used to output a signal to control the rotation of the rotating motor.

[0014] Technical effects and advantages of the present invention: The present invention utilizes the design of a knife switch assembly, a mounting mechanism, and a traction mechanism. When a problem occurs with the electrical equipment, the control console can send a signal to the controller, and the controller sends a signal to control the output end of the rotating motor to rotate, thereby reeling in the connecting rope and pulling the pulling rod, so that the pulling rod drives the moving contact knife to rotate away from the knife switch seat through the knife switch handle, thereby performing a circuit breaker protection before the staff arrives at the cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention.

[0016] Figure 2 It is a schematic diagram of the structure of the connection between the mounting plate and the guide frame of the present invention.

[0017] Figure 3 It is a schematic diagram of the three-dimensional structure of the knife seat and the actuating assembly of the present invention.

[0018] Figure 4 It is a schematic diagram of the three-dimensional structure of the switch handle and the actuating assembly of the present invention.

[0019] Figure 5 It is a schematic diagram of the top cross-sectional structure of the pull rod of the present invention.

[0020] Figure 6 It is a schematic diagram of the structure of the connection between the driving mechanism and the adjusting rod of the present invention.

[0021] Figure 7 It is a schematic diagram of the front cross-sectional structure of the adjusting rod of the present invention.

[0022] Figure 8 It is a schematic diagram of the three-dimensional structure of the connecting piece of the present invention.

[0023] Fig. 9 It is a schematic diagram of the locking member structure of the present invention.

[0024] Fig.10 It is a schematic diagram of the cross-sectional structure of the locking member of the present invention.

[0025] Fig.11 It is the principle diagram of the control system of the present invention.

[0026] In the figure: 1. cabinet body; 2. cabinet door; 3. placement plate; 4. knife seat; 5. moving contact knife; 6. knife handle; 7. pulling assembly; 71. pulling rod; 72. rotating motor; 73. connecting rope; 74. winding wheel; 75. limiting block; 76. first baffle; 77. first elastic block; 8. controller; 9. mounting plate; 10. mounting bolt; 11. adjusting rod; 12. connecting piece; 121. plug-in block; 122. second baffle; 123. connecting block; 124. rotating rod; 13. locking piece; 131. adjusting block; 132. locking block; 133. third baffle; 134. second elastic block; 14. guide frame. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] The present invention provides Figure 1-11 A switching switch cabinet for a static frequency converter of a combustion engine is shown, comprising a cabinet body 1, wherein a placement plate 3 for placing electronic equipment is arranged inside the cabinet body 1, wherein a knife assembly for controlling the start and stop of the electrical equipment is arranged inside the cabinet body 1, wherein the knife assembly comprises a knife seat 4, a movable contact knife 5 and a knife handle 6, wherein a traction mechanism for pulling the knife handle 6 is arranged on the top of the knife handle 6, wherein the traction mechanism comprises a control assembly and a pulling assembly 7, wherein a mounting plate 9 for installing the traction mechanism is arranged on the front side of the traction mechanism, wherein a mounting mechanism for adjusting the height of the mounting plate 9 is arranged on the front side of the mounting plate 9, wherein the control assembly comprises a controller 8, wherein a control system is arranged inside the controller 8, wherein the pulling assembly 7 comprises a pulling rod 71 and a rotating motor 72, wherein a connecting rope 73 for connecting the pulling rod 71 and the rotating motor 72 is arranged between the pulling rod 71 and the rotating motor 72.

[0029] Specifically, a cabinet door 2 for closing the cabinet 1 is provided on the front of the cabinet 1, the knife switch assembly is arranged on the front of the electrical equipment, the two ends of the placement plate 3 are respectively fixedly connected to the two sides of the inner wall of the cabinet 1, the bottom of the moving contact knife 5 is hinged to the knife switch seat 4, and the top of the moving contact knife 5 is fixedly connected to the bottom end of the knife switch handle 6.

[0030] Furthermore, multiple placement plates 3 are provided and distributed inside the cabinet 1. The top of the placement plate 3 is used to place electrical equipment including a static inverter or electrical equipment including a switch assembly. The switch assembly is an existing knife switch. By pulling the knife handle 6, the moving contact knife 5 is driven away from the knife seat 4 to achieve the circuit breaker effect.

[0031] Specifically, a circular slot is provided on one side of the top of the knife handle 6, one end of the pulling rod 71 is connected with the circular slot, a first cavity is provided inside the one end of the pulling rod 71, a limiting hole is provided on the front of the inner wall of the first cavity, a limiting block 75 is connected with the limiting hole, the pulling rod 71 is L-shaped, a first baffle 76 is fixedly connected to the back of the limiting block 75, a first elastic block 77 is provided on the back of the first baffle 76, the output end of the rotating motor 72 is fixedly connected to the winding wheel 74, one end of the connecting rope 73 is fixedly connected to the outer wall of the winding wheel 74, the other end of the connecting rope 73 is fixedly connected to the other end of the pulling rod 71, the controller 8 is electrically connected to the rotating motor 72, the front of the controller 8 and the rotating motor 72 are respectively fixedly connected to the back of the mounting plate 9, the control system includes a receiving module, an analyzing module and an output module, the receiving module is used to receive a signal sent by the console, the analyzing module is used to analyze the content of the received signal, and the output module is used to output a signal to control the rotation of the rotating motor 72.

[0032] Further, the inner wall of the circular slot is a smooth inner wall, the material of the pull rod 71 is an insulating material, the diameter of the pull rod 71 is 0.9 times the diameter of the circular slot, the vertical cross-sectional size of the limiting hole is 1.02 times the vertical cross-sectional size of the limiting block 75, the back of the limiting block 75 is fixedly connected to the front of the first baffle 76 by gluing, the first elastic block 77 is a rubber elastic block, the front and back of the first elastic block 77 are fixedly connected to the back of the first baffle 76 and the back of the inner wall of the first cavity by gluing, and the end of the pull rod 71 away from the limiting block 75 is fixedly connected to the other end of the connecting rope 73 by gluing. The controller 8 is fixedly connected to the back of the mounting plate 9 by gluing or screws, the controller 8 is electrically connected to the mounting plate 9 by wires, the controller 8 is electrically connected to the external control power supply, the output module is electrically connected to the input end of the rotating motor 72, the receiving module is used to receive the signal sent by the console, and the receiving module has There is a data line socket and a wireless transmission communication protocol, which can be connected to the data line for signal transmission, and can also be used for remote data transmission through a WiFi local area network, so that the corresponding data transmission method can be selected according to the actual usage. The analysis module is used to analyze the information after receiving the signal to control the rotating motor 72 to rotate clockwise or counterclockwise. When an electrical device with a switch assembly is found to have a fault inside the cabinet 1 and the movable contact knife 5 needs to be disconnected, the console can send a signal to the controller 8. After the receiving module of the controller 8 receives the signal, it transmits it to the analysis module. The analysis module analyzes that the output shaft of the rotating motor 72 needs to rotate clockwise at this time. At this time, the clockwise rotation signal is transmitted to the rotating motor 72 through the output module. The output end shaft of the rotating motor 72 drives the winding wheel 74 to rotate, and reels the connecting rope 73, thereby pulling the pulling rod 71 to move closer to the rotating motor 72. The pulling rod 71 drives the knife handle 6 to rotate the movable contact knife 5, thereby rotating away from the knife seat 4, realizing automatic tripping, so that the switch can be tripped to protect the electrical equipment before the staff reaches the cabinet 1, which plays a good protective role.

[0033] Specifically, the mounting mechanism includes a guide component and an adjustment component, the guide component includes a guide frame 14, the adjustment component includes an adjustment rod 11, a mounting groove is provided on the front of the adjustment rod 11, round holes are provided on both sides of the front of the mounting plate 9, mounting bolts 10 are inserted and connected inside the round holes, the mounting bolts 10 are inserted and connected with the mounting groove, a guide groove is provided on one side of the guide frame 14, a locking member 13 is slidably inserted and connected inside the guide groove, a connecting member 12 for connecting with the locking member 13 is provided at the end of the adjustment rod 11, the locking member 13 includes an adjustment block 131, a second cavity is provided inside the adjustment block 131, an insertion hole is provided on the back of the inner wall of the second cavity, and a locking block 132 is inserted and connected inside the insertion hole, A third baffle 133 is fixedly connected to the front of the locking block 132, a second elastic block 134 is arranged on the front of the third baffle 133, a connecting slot is opened on one side of the adjusting block 131, a locking hole is opened on the back of the inner wall of the guide groove, a third cavity is opened inside one end of the adjusting rod 11, a connecting hole is opened on one side of the inner wall of the third cavity, a moving hole is opened on the top of the inner wall of the third cavity, the connecting member 12 includes a plug-in block 121, the plug-in block 121 is connected with the connecting hole, one end of the plug-in block 121 is fixedly connected with the second baffle 122, one end of the second baffle 122 is fixedly connected with the connecting block 123, the outer wall of the connecting block 123 is fixedly connected with a rotating rod 124, and the rotating rod 124 is connected with the moving hole.

[0034] Furthermore, the number of traction mechanisms corresponds to the number of electrical equipment with switch blade assemblies, the number of adjustment assemblies corresponds to the number of traction mechanisms, grooves are symmetrically provided on both sides of the inner wall of the cabinet 1, two guide frames 14 are provided, and are symmetrically provided on both sides of the cabinet 1, and the side of the guide frame 14 away from the guide groove is fixedly connected to the inner wall of the groove, so that the side of the guide frame 14 with the guide groove is flush with the inner wall of the cabinet 1, so as not to affect the entry and exit of the electrical equipment. At the same time, the width of the groove is 1.5 times the width of the guide frame 14, so that it is convenient for the staff to extend their fingers into the groove and press the locking block 132, and the diameter of the mounting groove of the adjustment rod 11 is equal to the diameter of the circular hole of the mounting plate 9. The same, are 1.01 times the diameter of the mounting bolt 10, by inserting the mounting bolt 10 into the mounting groove and the circular hole at the same time, the mounting plate 9 can be fixedly connected to the adjusting rod 11, the adjusting rod 11 has multiple mounting grooves with equal spacing, arranged horizontally and linearly, and the position of the mounting plate 9 on the adjusting rod 11 can be adjusted by inserting the mounting bolt 10 into the mounting grooves at different positions, the guide groove of the guide frame 14 and the adjusting block 131 are both T-shaped, the size of the adjusting block 131 is 0.98 times the size of the guide groove, the end of the adjusting block 131 facing the adjusting rod 11 is flush with the side of the guide frame 14 facing the adjusting rod 11, the number of locking members 13 is twice the number of adjusting rods 11, and the number of locking members 13 is twice the number of adjusting rods 11. The size of the insertion hole 13 is the same as that of the locking hole, which is 1.01 times the size of the locking block 132. The size of the third baffle 133 is 1.2 times the size of the insertion hole. The second elastic block 134 is an elastic rubber block, which is in a compressed state in the second cavity. The adjustment block 131 is provided with a connecting slot at one end facing the adjustment rod 11, and the size of the connecting slot is 1.01 times the size of the plug-in block 121. A plurality of locking holes are provided at equal intervals and arranged in a vertical straight line. The connecting pieces 12 are symmetrically arranged at both ends of the adjustment rod 11, and the size of the connecting hole is 1.01 times the size of the plug-in block 121. The size of the second baffle 122 is 1.2 times the size of the connecting hole. The plug-in block 121 and the second baffle 134 are connected to each other. 22. The connecting block 123 and the rotating rod 124 are fixedly connected by gluing, and the movable hole opened at the top of the third cavity is L-shaped, and the movable hole is composed of a short hole and a long hole. When the rotating rod 124 is located in the short hole and cannot move along the direction of the adjusting rod 11, the rotating rod 124 drives the connecting block 123, so that the connecting block 123 pushes the second baffle 122 to insert the plug-in block 121 into the connecting slot, thereby realizing the locking connection between the adjusting rod 11 and the locking piece 13. When the rotating rod 124 is located in the long hole, the plug-in block 121 is moved away from the connecting slot, the connection between the adjusting rod 11 and the locking piece 13 is released, and the adjusting rod 11 can be removed.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A gas turbine static frequency converter switch cabinet, comprising a cabinet body (1), wherein a placement plate (3) for placing electronic equipment is arranged inside the cabinet body (1), characterized in that: A knife assembly for controlling the start and stop of electrical equipment is arranged inside the cabinet (1), the knife assembly comprising a knife seat (4), a movable contact knife (5) and a knife handle (6), a traction mechanism for pulling the knife handle (6) is arranged on the top of the knife handle (6), the traction mechanism comprising a control assembly and a pulling assembly (7), a mounting plate (9) for installing the traction mechanism is arranged on the front of the traction mechanism, a mounting mechanism for adjusting the height of the mounting plate (9) is arranged on the front of the mounting plate (9), the control assembly comprises a controller (8), a control system is arranged inside the controller (8), the pulling assembly (7) comprises a pulling rod (71) and a rotating motor (72), a connecting rope (73) for connecting the pulling rod (71) and the rotating motor (72) is arranged between the pulling rod (71) and the rotating motor (72).

2. A gas turbine static frequency converter switch cabinet according to claim 1, characterized in that: The cabinet body (1) is provided with a cabinet door (2) on the front side thereof for closing the cabinet body (1); the knife switch assembly is provided on the front side of the electrical equipment; the two ends of the placement plate (3) are respectively fixedly connected to the two sides of the inner wall of the cabinet body (1); the bottom of the movable contact knife (5) is hinged to the knife switch seat (4); and the top end of the movable contact knife (5) is fixedly connected to the bottom end of the knife switch handle (6).

3. A gas turbine static frequency converter switch cabinet according to claim 2, characterized in that: A circular slot is provided on one side of the top of the gate knife handle (6), one end of the pull rod (71) is inserted and connected to the circular slot, a first cavity is provided inside the one end of the pull rod (71), a limiting hole is provided on the front side of the inner wall of the first cavity, and a limiting block (75) is inserted and connected inside the limiting hole.

4. A gas turbine static frequency converter switch cabinet according to claim 3, characterized in that: The pulling rod (71) is L-shaped, the back side of the limiting block (75) is fixedly connected to a first baffle (76), and the back side of the first baffle (76) is provided with a first elastic block (77).

5. A gas turbine static frequency converter switch cabinet according to claim 1, characterized in that: The output end of the rotating motor (72) is fixedly connected to a winding wheel (74), one end of the connecting rope (73) is fixedly connected to the outer wall of the winding wheel (74), the other end of the connecting rope (73) is fixedly connected to the other end of the pulling rod (71), the controller (8) is electrically connected to the rotating motor (72), and the front faces of the controller (8) and the rotating motor (72) are respectively fixedly connected to the back face of the mounting plate (9).

6. A gas turbine static frequency converter switch cabinet according to claim 1, characterized in that: The mounting mechanism comprises a guide assembly and an adjustment assembly, the guide assembly comprises a guide frame (14), the adjustment assembly comprises an adjustment rod (11), a mounting groove is provided on the front of the adjustment rod (11), circular holes are provided on both sides of the front of the mounting plate (9), mounting bolts (10) are inserted and connected inside the circular holes, and the mounting bolts (10) are inserted and connected with the mounting grooves.

7. A gas turbine static frequency converter switch cabinet according to claim 6, characterized in that: A guide groove is provided on one side of the guide frame (14), a locking piece (13) is slidably inserted and connected inside the guide groove, and a connecting piece (12) for connecting to the locking piece (13) is provided at the end of the adjustment rod (11).

8. A gas turbine static frequency converter switch cabinet according to claim 7, characterized in that: The locking member (13) comprises an adjusting block (131), a second cavity is provided inside the adjusting block (131), an insertion hole is provided on the back of an inner wall of the second cavity, a locking block (132) is inserted and connected inside the insertion hole, a third baffle (133) is fixedly connected to the front of the locking block (132), a second elastic block (134) is provided on the front of the third baffle (133), a connection slot is provided on one side of the adjusting block (131), and a locking hole is provided on the back of an inner wall of the guide groove.

9. A gas turbine static frequency converter switch cabinet according to claim 7, characterized in that: A third cavity is provided inside one end of the adjusting rod (11), a connection hole is provided on one side of an inner wall of the third cavity, a moving hole is provided at the top end of the inner wall of the third cavity, the connecting member (12) comprises a plug-in block (121), the plug-in block (121) is connected to the connection hole through insertion, a second baffle (122) is fixedly connected to one end of the plug-in block (121), a connecting block (123) is fixedly connected to one end of the second baffle (122), a rotating rod (124) is fixedly connected to the outer wall of the connecting block (123), and the rotating rod (124) is connected to the moving hole through insertion.

10. A gas turbine static frequency converter switch cabinet according to claim 1, characterized in that: The control system includes a receiving module, an analyzing module and an output module; The receiving module is used to receive the signal sent by the console; The analysis module is used to analyze the content of the received signal; The output module is used to output a signal to control the rotation of the rotating motor (72).

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