Auxiliary equipment for braking water-turbine generator set

Abstract

The utility model provides auxiliary equipment for braking of a water-turbine generator set, which belongs to the technical field of braking equipment and comprises a workbench and an auxiliary component arranged on the outer wall of the workbench, and the auxiliary component comprises a shaft sleeve, a limiting shell, a lifting plate, a mounting table, a mounting groove, a limiting block, a driving rod, an air cylinder, a fine tuning table, a brake pad and a reset component. The shaft sleeve is matched with the brake pad, the mounting groove is formed in the outer wall of the mounting table, the limiting block is fixedly arranged on the outer wall of the mounting table, the mounting groove is matched with the brake pad, the limiting block is slidably embedded in the inner wall of the limiting shell, and one end of the air cylinder is fixedly arranged on the outer wall of the lifting plate. Through the auxiliary assembly, multi-angle clamping and friction can be stably carried out on the shaft sleeve, the rotating speed of the main shaft is reduced to the maximum degree in a driven mode, the situation that the main shaft cannot be accurately decelerated due to failure of a single brake pad is avoided, and the situation that the stability of decelerating friction is reduced due to abrasion of the brake pad can be adapted.

Description

TECHNICAL FIELD

[0001] The utility model belongs to brake equipment technical field, concretely relates to a kind of auxiliary equipment for water-turbine generator set braking. BACKGROUND

[0002] The working principle of water-turbine generator set is to convert the potential energy of water into electrical energy. Specifically, the water flow cited by the hydropower station will convert the water energy into mechanical energy to drive the rotation of the machine when passing through the water turbine; the generator converts the mechanical energy of the water turbine into electrical energy and outputs. This process consists of two stages: first, the water loses potential energy to the water turbine, and then the generator converts the mechanical energy of the water turbine into electrical energy.

[0003] The brake pad is a key component of the water-turbine generator set braking assembly, and its wear degree directly affects the braking effect. With the increase of use time, the brake pad will gradually wear out, causing the following problems: increased braking distance: after the brake pad wears out, its braking effect will weaken, resulting in an increase in braking distance, which may cause the unit to fail to slow down or stop in time during shutdown, threatening the stable operation of the unit and the power grid, cylinder guaranteed braking distance problem: as the brake pad wears out, the cylinder's guaranteed braking distance may change, and if the cylinder's braking distance is insufficient, it will not be able to provide enough braking force to ensure the stable shutdown of the unit, brake effect decreases over time: due to the wear of the brake pad and the change of the cylinder's braking distance, the brake effect will gradually decrease over time, which may cause the unit to fail to respond in time when emergency shutdown is required, increasing the risk of accidents. SUMMARY

[0004] The utility model aims to provide a kind of auxiliary equipment for water-turbine generator set braking, to solve the problems raised in the background art.

[0005] An auxiliary equipment for water-turbine generator set braking, comprising,

[0006] a workbench;

[0007] an auxiliary assembly provided on the outer wall of the workbench, wherein: the auxiliary assembly includes a shaft sleeve, a limiting shell, a lifting plate, a mounting table, a mounting groove, a limiting block, a driving rod, a cylinder, a fine adjustment table, a brake pad and a reset assembly, the shaft sleeve and the brake pad are matched with each other, the mounting groove is provided on the outer wall of the mounting table, the limiting block is fixedly arranged on the outer wall of the mounting table, the mounting groove and the brake pad are matched with each other, the limiting block is slidably embedded in the inner wall of the limiting shell, one end of the cylinder is fixedly arranged on the outer wall of the lifting plate, the fine adjustment table is fixedly arranged on the top of the outer wall of the lifting plate by bolts, one end of the driving rod is rotatably inserted into the inner wall of the fine adjustment table, the other end of the driving rod is rotatably inserted into the outer wall of the limiting block, and the reset assembly is arranged in the inner wall of the limiting shell.

[0008] Further, the inner wall of the workbench is rotationally embedded with a main shaft, and the shaft sleeve is sleeved on the outer wall of the main shaft.

[0009] Further, the reset assembly comprises a limiting rod and a tension spring, the limiting rod is fixedly arranged on the outer wall of the limiting shell, the protruding end of the limiting rod is slidingly embedded on the inner wall of the limiting block, one end of the tension spring is fixedly arranged on the outer wall of the limiting rod, and the other end of the tension spring is fixedly arranged on the outer wall of the limiting block.

[0010] Further, the outer wall of the mounting table is clamped on both sides with a limiting frame, and the outer wall of the limiting frame is threadedly connected with a fixing bolt.

[0011] Further, the gas cylinder is fixedly arranged on the outer wall of the workbench, and the gas cylinder is connected to an external gas supply system through a pipeline.

[0012] Further, the outer wall of the limiting shell is fixedly provided with a mounting frame on both sides, and the mounting frame is fixedly arranged on the outer wall of the workbench at the top.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] Through the auxiliary assembly, stable shaft sleeve multi-angle clamping and friction can be realized, the rotation speed of the main shaft is reduced, the failure of the single brake pad is avoided, the main shaft cannot be accurately reduced in speed, and the wear of the brake pad can be adapted, so that the stability of the speed reduction friction is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the utility model, and constitute a part of the specification, are used to explain the utility model together with embodiments of the utility model, and do not constitute the limitation to the utility model.In the drawings:

[0016] Figure 1 It is the perspective view of the utility model;

[0017] Figure 2 It is the perspective view of the limiting shell of the utility model;

[0018] Figure 3 It is the perspective view of the limiting block of the utility model;

[0019] Figure 4 It is the schematic view of the gas supply system of the utility model.

[0020] In the drawing: 1, workbench;2, main shaft;3, shaft sleeve;4, limiting shell;5, lifting plate;6, mounting frame;7, mounting table;8, drive rod;9, gas cylinder;10, fine adjustment table;11, brake pad;12, limiting frame;13, bolt;14, limiting rod;15, tension spring;701, mounting groove;702, limiting block. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be apparently and completely described in connection with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor fall within the scope of protection of the utility model.

[0022] In the description of the utility model, it needs to be explained that the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0023] In the description of the utility model, it needs to be explained that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be broadly understood. For example, "connected" can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, can be electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, and can be the communication between two elements. For the ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0024] Please refer to Figures 1-4 The technical solutions provided by the embodiments are as follows:

[0025] A kind of auxiliary equipment for water turbine generator set brake, including,

[0026] Workbench 1;

[0027] The auxiliary assembly is arranged on the outer wall of the workbench 1, wherein the auxiliary assembly comprises a shaft sleeve 3, a limiting shell 4, a lifting plate 5, a mounting table 7, a mounting groove 701, a limiting block 702, a driving rod 8, a pneumatic cylinder 9, a fine adjustment table 10, a brake piece 11 and a reset assembly, the shaft sleeve 3 is matched with the brake piece 11, the mounting groove 701 is arranged on the outer wall of the mounting table 7, the limiting block 702 is fixedly arranged on the outer wall of the mounting table 7, the mounting groove 701 is matched with the brake piece 11, the limiting block 702 is slidingly embedded in the inner wall of the limiting shell 4, one end of the pneumatic cylinder 9 is fixedly arranged on the outer wall of the lifting plate 5, the fine adjustment table 10 is fixedly arranged on the top of the outer wall of the lifting plate 5 through bolts, one end of the driving rod 8 is rotatably inserted into the inner wall of the fine adjustment table 10, and the other end of the driving rod 8 is rotatably inserted into the outer wall of the limiting block 702, and the reset assembly is arranged in the inner wall of the limiting shell 4.

[0028] In the embodiment of the utility model, through the auxiliary assembly, stable shaft sleeve multi-angle clamping and friction can be realized, the rotation speed of the main shaft is reduced, the failure of single brake piece 11 is avoided, the main shaft cannot be accurately reduced, and the wear of brake piece 11 can be adapted, the stability of the reduced friction is reduced, the cylinder 9 is communicated with the air supply system, the air supply system comprises a novel air electromagnetic valve, the anti-pollution ability is strong, rust, card, action sensitive reliable, there are three kinds of operation modes, and the electromagnetic valve is an imported air electromagnetic valve, the electromagnetic valve is large in air volume and not easy to rust, card, action sensitive reliable, the integrated device adopts hard aluminum alloy material, the volume is small, the weight is light, and an air filter is added at the total gas source inlet, the compressed air of the brake system is purified, the condensed water and impurities in the compressed air are reduced, the electromagnetic valve core and brake piston cylinder and other parts are not damaged, rust, card, action sensitive reliable, the working life is prolonged, has remote automatic control, present place electric manual control, present place mechanical manual control three control modes, mutual locking, can make corresponding measures according to various problems appearing on the spot, improve the reliability of equipment, remote automatic control can realize complete automatic shutdown process of the unit, reduce the labor intensity of operation personnel, prevent brake system misoperation caused by human factors, the air supply system mainly comprises a vertical air electromagnetic valve AKF and two switching action handle valves SF1, SF2, an integrated valve plate, an air source high-precision self-drainage filter, an air source pipeline filter, a brake pipeline filter, a reset pipeline filter, an air source main pipe manual valve, an emergency exhaust manual valve, an air source pressure transmitter (with digital display) for uploading monitoring, an air source cavity pressure signal pressure switch, a brake cavity pressure signal pressure switch and a reset cavity pressure signal pressure switch, three pressure gauges are connected to the upper interface, and five interfaces of air source, brake, reset and exhaust are connected to the lower interface, and the air supply system has the advantages of convenient maintenance, safe and reliable operation, remote automatic control, when remote automatic control, the remote automatic / cut-off / present place manual on the brake cabinet panel is twisted to the remote automatic control position, the brake is put into / cut-off / reset, the knob is twisted to the cut-off position, the combined valve handle valve SF1 is turned to the automatic position, the combined valve handle valve SF2 is in the middle position, through remote monitoring start-up process and shutdown process, the left and right electromagnets of the electromagnetic air valve AKF1 realize brake input / brake cut-off / reset reverse input / reset reverse cut-off function, realize full-automatic control unit brake and reverse reset function, the left coil is electrified to brake input pressurization, the coil is de-energized to brake exit pressure relief, the right coil is electrified to reset reverse input pressurization, and the coil is de-energized to reset reverse exit pressure relief, present place electric manual control, when present place electric manual control, the remote automatic / cut-off / present place manual on the brake cabinet panel is twisted to the present place manual control position,When the brake is needed to be put in, the "brake input / cut-off / reset input" knob is twisted to the "brake input" position, the left coil of the electromagnetic air valve AKF1 is electrified to put in the brake pressure, when the brake is needed to be withdrawn, the "brake input / cut-off / reset input" knob is twisted to the "cut-off" position, the left coil of the electromagnetic air valve AKF1 is deenergized to withdraw the brake pressure, when the reset recoil is needed to be put in, the "brake input / cut-off / reset input" knob is twisted to the "reset input" position, the right coil of the electromagnetic air valve AKF1 is electrified to put in the reset pressure, when the reset recoil is needed to be withdrawn, the "brake input / cut-off / reset input" knob is twisted to the "cut-off" position, the right coil of the electromagnetic air valve AKF1 is deenergized to withdraw the reset pressure, the local mechanical manual control is carried out, the handle valve "automatic / cut-off / manual" SF1 on the combination valve is turned to the manual position, the handle valve "brake / cut-off / reset" SF2 is turned to the cut-off position, when the brake is needed to be put in, the handle valve SF2 is turned to the "brake" position, the brake is put in the pressure, when the brake is needed to be withdrawn, the handle valve SF2 is turned to the "cut-off" intermediate position, the brake is withdrawn to the pressure, when the reset is needed to be put in, the handle valve SF2 is turned to the "reset" position, the reset is put in the pressure, when the reset is needed to be withdrawn, the handle valve SF2 is turned to the "cut-off" intermediate position, the reset is withdrawn to the pressure.

[0029] Specifically, the inner wall of the workbench 1 is rotatably embedded with the main shaft 2, and the shaft sleeve 3 is sleeved on the outer wall of the main shaft 2.

[0030] In the specific embodiment of the utility model, the main shaft 2 can ensure stable transmission and deceleration.

[0031] Specifically, the reset assembly includes a limiting rod 14 and a tension spring 15, the limiting rod 14 is fixedly arranged on the outer wall of the limiting shell 4, the protruding end of the limiting rod 14 is slidably embedded in the inner wall of the limiting block 702, one end of the tension spring 15 is fixedly arranged on the outer wall of the limiting rod 14, and the other end of the tension spring 15 is fixedly arranged on the outer wall of the limiting block 702.

[0032] In the specific embodiment of the utility model, the other end of the tension spring 15 is fixedly arranged on the outer wall of the limiting block 702, so that the reset of the limiting block 702 can be ensured.

[0033] Specifically, the outer wall of the mounting table 7 is clamped on both sides with a limiting frame 12, and the outer wall of the limiting frame 12 is threadedly connected with a fixing bolt 13.

[0034] In the specific embodiment of the utility model, the outer wall of the limiting frame 12 is threadedly connected with the fixing bolt 13, so that stable installation can be ensured.

[0035] Specifically, the cylinder 9 is fixedly arranged at the outer wall of the workbench 1, and the cylinder 9 is communicated with the external gas supply system through a pipeline.

[0036] In the embodiment of the utility model, the cylinder 9 is fixedly arranged at the outer wall of the workbench 1, so that the stability of work can be ensured.

[0037] Specifically, the outer wall of the limiting shell 4 is fixedly provided with the mounting rack 6 on both sides, and the mounting rack 6 is fixedly arranged at the top of the outer wall of the workbench 1.

[0038] In the embodiment of the utility model, the mounting rack 6 is fixedly arranged at the top of the outer wall of the workbench 1, so that the stability of the limiting shell 4 can be ensured.

[0039] Working principle:

[0040] The gas supply system supplies high-pressure gas to the cylinder 9, so that the cylinder 9 is in the braking position, the cylinder 9 drives the lifting plate 5 to rise, drives the fine adjustment table 10 to rise, adjusts the distance between the fine adjustment table 10 and the lifting plate 5, can adjust the driving distance, the fine adjustment table 10 drives the driving rod 8 to move, the driving rod 8 drives the limiting block 702 to move on the inner wall of the limiting shell 4, then the mounting table 7 is driven by the limiting block 702, the mounting table 7 drives the brake pad 11, the brake pad 11 completes the clamping of the shaft sleeve 3, completes the friction speed reduction, and after the main shaft 2 is reduced in speed, the protection of the stable hydroelectric generator set can be realized.

[0041] Finally, it should be noted that: the above only for the preferred embodiments of the utility model, and not for limiting the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model, should be included in the protection scope of the utility model.

Claims

1. 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The auxiliary equipment for braking of a hydroelectric generator set according to claim 1, characterized by ​ 3. The auxiliary equipment for braking of a hydroelectric generator set according to claim 2, characterized in that, ​ 4. The auxiliary equipment for braking of a hydroelectric generator set according to claim 3, characterized by ​ 5. The auxiliary equipment for braking of a hydroelectric generator set according to claim 4, characterized by ​ 6. The auxiliary equipment for braking of a hydroelectric generator set according to claim 5, characterized by ​

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