CN220081574U

CN220081574U - Maintenance tool for thrust oil cooler of hydroelectric generating set

Info

Publication number: CN220081574U
Application number: CN202321444929.4U
Authority: CN
Inventors: 刘强昆
Original assignee: Funing Gula Hydropower Development Co ltd
Current assignee: Funing Gula Hydropower Development Co ltd
Priority date: 2023-06-08
Filing date: 2023-06-08
Publication date: 2023-11-24
Anticipated expiration: 2033-06-08

Abstract

The utility model relates to the technical field of hydraulic generator overhaul, and discloses a hydraulic generator set thrust oil cooler overhaul fixture, wherein an arm frame is arranged above a cylinder body of an oil cylinder, a hydraulic push rod is arranged in the middle of a support of the arm frame, a negative pressure push head extending to the inside of a cavity of the oil cylinder is arranged at the telescopic end of the hydraulic push rod, and an organic filtering mechanism is arranged in the middle of the cavity of the oil cylinder. According to the utility model, the oil cylinder is used as the hydraulic oil container, when the oil pumping maintenance work is carried out on the thrust oil cooler, the oil cooler is communicated with the oil pumping valve by the hose, then the inside of the oil cylinder is in a negative pressure state under the negative pressure combination formed by the hydraulic push rod and the negative pressure push head, and the negative pressure extraction work is carried out on the hydraulic oil in the oil cooler so as to facilitate the emptying maintenance work on the oil cooler.

Description

Maintenance tool for thrust oil cooler of hydroelectric generating set

Technical Field

The utility model relates to the technical field of maintenance of hydraulic generators, in particular to a maintenance tool for a thrust oil cooler of a hydraulic generator set.

Background

The hydroelectric generating set is a generating set driven by a water turbine, and the capacity and the rotating speed of the hydroelectric generating set have large variation range due to different natural conditions of the hydropower station; usually, a horizontal structure is adopted for a small-sized hydraulic generator and a high-speed hydraulic generator driven by an impulse turbine, and a vertical structure is adopted for a large-sized and medium-sized speed generator; because the hydropower station is mostly located far away from the city and is usually required to supply power to the load through a longer power transmission line, the electric power system has higher requirements on the running stability of the hydraulic oil in the hydroelectric generating set, wherein the thrust oil cooler is used as thrust equipment of hydraulic oil in the hydroelectric generating set and is related to the stable running property of the hydraulic oil in the hydroelectric generating set, so that the hydroelectric generating set is provided with the thrust oil cooler and meanwhile, a maintenance tool corresponding to county is required, and the thrust oil cooler is detected and operated in the first time.

When overhauling the work to the oil cooler, current frock of overhauling mostly adopts basin dress or barreled mode, opens the oil cooler oil discharge port, carries out the work of discharging oil to its inside hydraulic oil, however this type of mode, on the one hand the oil discharging efficiency is slower, and is consuming time longer, and on the other hand hydraulic oil is extremely easy to wrap up in like external dust, impurity etc. leads to hydraulic oil purity variation, is unfavorable for the backward flow to use. Therefore, a person skilled in the art provides a hydraulic generator set thrust oil cooler maintenance tool to solve the problems set forth in the background art.

Disclosure of Invention

The utility model aims to provide a maintenance tool for a thrust oil cooler of a hydroelectric generating set, so as to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the hydraulic pushing rod is arranged at the telescopic end of the hydraulic pushing rod, a negative pressure pushing head extending to the inside of a cavity of the oil cylinder is arranged at the middle part of the cavity of the oil cylinder, and an organic filtering mechanism is arranged at the middle part of the cavity of the oil cylinder;

the machine filter mechanism comprises a first transmission shaft and a second transmission shaft which are sequentially arranged in the middle of the oil cylinder cavity from top to bottom, a first filter disc matched with the oil cylinder is sleeved at the shaft lever end of the first transmission shaft, and a second filter disc matched with the oil cylinder is sleeved at the shaft lever end of the second transmission shaft.

As still further aspects of the utility model: the other side of the cylinder body of the oil cylinder is provided with a pushing hand frame at the middle part, and the bottom of the cylinder body of the oil cylinder is provided with two groups of pushing foot frames in a pairwise symmetrical mode.

As still further aspects of the utility model: the negative pressure pushing head is of a cylindrical structure, and the outer diameter of the cylinder of the negative pressure pushing head is matched with the inner diameter of the cavity of the oil cylinder.

As still further aspects of the utility model: the first filter disc and the second filter disc are stainless steel filter screens, and the disc rims of the first filter disc and the second filter disc are wrapped with sealing rings attached to the oil cylinder.

As still further aspects of the utility model: the belt pulley A penetrating through the oil cylinder is installed at one end output end of the first transmission shaft, the belt pulley B penetrating through the oil cylinder is installed at one end output end of the second transmission shaft, and the belt pulley A and the belt pulley B are connected through a transmission belt.

As still further aspects of the utility model: the output end of the other end of the first transmission shaft is provided with a transmission motor fixed on the oil drum.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the oil cylinder is used as the hydraulic oil container, when the oil pumping maintenance work is carried out on the thrust oil cooler, the oil cooler is communicated with the oil pumping valve by the hose, then the inside of the oil cylinder is in a negative pressure state under the negative pressure combination formed by the hydraulic push rod and the negative pressure push head, and the negative pressure extraction work is carried out on the hydraulic oil in the oil cooler so as to facilitate the emptying maintenance work on the oil cooler.

2. In the use process, after the oil cooler is overhauled, the negative pressure pushing head is pushed by the hydraulic push rod to push the oil liquid back to the oil cooler through the positive pressure of the drainage valve, and impurities in the oil liquid can be filtered and isolated by double filtration of the first filter disc and the second filter disc in the mechanical filter mechanism while pushing the oil liquid back, so that the purity of the oil liquid reflux is ensured, and simultaneously, after the oil liquid is pushed back, the first filter disc and the second filter disc are pushed to rotate and swing by the transmission motor in the mechanical filter mechanism, so that the two groups of filter discs can keep an inclined state, and then the filtered impurities are wrapped and clamped together to flush out the residual oil liquid under the flushing of subsequent cleaning liquid, so as to carry out self-cleaning work on an overhauling tool.

Drawings

FIG. 1 is a schematic structural diagram of a hydroelectric generating set thrust oil cooler overhaul tooling;

FIG. 2 is a schematic structural view of the inside of a hydraulic generator set thrust oil cooler maintenance tool;

fig. 3 is an enlarged schematic diagram of the hydroelectric generating set thrust oil cooler service fixture at a in fig. 2.

In the figure: 1. an oil drum; 2. a hand pushing frame; 3. an oil extraction valve; 4. pushing the foot rest; 5. a drain valve; 6. an arm strength frame; 7. a hydraulic push rod; 8. negative pressure pushing head; 9. a first drive shaft; 10. a second drive shaft; 11. a first filter tray; 12. a second filter tray; 13. a drive motor; 14. a belt pulley A; 15. a belt pulley B; 16. a driving belt.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 3, in the embodiment of the utility model, a maintenance tool for a thrust oil cooler of a hydroelectric generating set comprises an oil drum 1, wherein a pushing hand frame 2 is arranged at the middle position of the other side of the drum body of the oil drum 1, two groups of pushing foot frames 4 are symmetrically arranged at the bottom of the drum body of the oil drum 1, when the maintenance tool is used for maintaining the thrust oil cooler of the hydroelectric generating set, the pushing hand frame 2 is pushed by the truckle support of the pushing foot frames 4, the maintenance tool is pushed to the side of the oil cooler, then the oil cooler is communicated with an oil pumping valve 3 by a hose, and hydraulic oil in the oil cooler is pumped and discharged so as to facilitate maintenance.

The cylinder one side of the oil drum 1 is located middle part position department intercommunication has the oil extraction valve 3, and the cylinder bottom of the oil drum 1 is located awl bottom end position department intercommunication has the bleeder valve 5, arm power frame 6 is installed to the cylinder top of the oil drum 1, the support mid-mounting of arm power frame 6 has hydraulic push rod 7, the telescopic end of hydraulic push rod 7 installs the negative pressure push head 8 that extends to the inside of oil drum 1 cavity, negative pressure push head 8 is the cylindricality structure, and the cylinder external diameter of negative pressure push head 8 and the inside diameter of the cavity looks adaptation of oil drum 1, when utilizing the maintenance frock to overhaul the thrust oil cooler of hydroelectric set, after communicating maintenance frock and oil cooler, the telescopic end shrink of hydraulic push rod 7 drives negative pressure push head 8 and reciprocates, negative pressure push head 8 moves up the in-process, make the inside negative pressure state that forms of oil drum 1, utilize the negative pressure, carry out negative pressure extraction work to the inside fluid of oil cooler, with closed extraction to the inside oil drum 1, it can improve the fluid extraction efficiency, save long time, on the other hand can avoid the fluid to go outside to contact, ensure the pure nature of oil.

The cavity mid-mounting of oil drum 1 has organic filter mechanism, the machine filter mechanism includes from last first transmission shaft 9 at oil drum 1 cavity middle part, second transmission shaft 10 of installing in proper order down, the axostylus axostyle pot head of first transmission shaft 9 is equipped with first filter disc 11 with oil drum 1 looks adaptation, the axostylus axostyle pot head of second transmission shaft 10 is equipped with the second filter disc 12 with oil drum 1 looks adaptation, first filter disc 11 and second filter disc 12 are the stainless steel filter screen, and the disc frame of first filter disc 11 and second filter disc 12 all wraps up the sealing washer that is laminated mutually with oil drum 1, in the maintenance process of utilizing the frock to overhaul the thrust oil cooler of hydroelectric set, after the maintenance of the oil cooler of empting, the flexible end of hydraulic push rod 7 stretches out, drive negative pressure push head 8 moves down, negative pressure push head 8 is in the downward moving the in-process, form the malleation, press the inside fluid of oil drum 1 is through the positive pressure extrusion of flow valve 5, the backward flow to the oil cooler is inside, and when to the fluid positive pressure thrust backward, filter disc 12 is used to filter the impurity in order to guarantee clean filter oil in the filter disc through the first filter disc with the second filter disc 12.

The output end of one end of the first transmission shaft 9 is provided with a belt pulley A14 penetrating through the oil drum 1, the output end of one end of the second transmission shaft 10 is provided with a belt pulley B15 penetrating through the oil drum 1, the belt pulley A14 is connected with the belt pulley B15 through a transmission belt 16, the output end of the other end of the first transmission shaft 9 is provided with a transmission motor 13 fixed on the oil drum 1, in the process of overhauling a thrust oil cooler of a hydroelectric generating set by utilizing an overhauling tool, after oil is pushed back to the inside of the oil cooler, the transmission motor 13 works to drive the first transmission shaft 9 to rotate, the belt pulley A14 is synchronously driven to rotate, then the belt pulley B15 is driven to rotate by utilizing the transit transmission of the transmission belt 16, the second transmission shaft 10 synchronously rotates along with the first transmission shaft 9 to push the first filter disc 11 and the second filter disc 12 to swing in a rotating mode, a certain angle of inclination state is kept, then clean water is injected into the oil drum 1 through the oil extraction valve 3, residual oil and impurities on the two groups of filter discs are flushed together, the residual oil and the impurities are discharged through the drainage valve 5, and the overhauling tool is self-cleaned.

The working principle of the utility model is as follows: when the maintenance tool is used for carrying out maintenance work on a thrust oil cooler of a hydroelectric generating set, the oil cooler is communicated with the oil pumping valve 3 through a hose, after the maintenance tool is communicated with the oil cooler, the telescopic end of the hydraulic push rod 7 contracts to drive the negative pressure push head 8 to move upwards, the negative pressure push head 8 forms a negative pressure state inside the oil drum 1 in the upward moving process, negative pressure is utilized for carrying out negative pressure extraction work on oil inside the oil cooler, the oil is extracted to the inside of the oil drum 1 in a closed mode, hydraulic oil inside the oil cooler is pumped and discharged, so that maintenance work is carried out, after the maintenance of the discharged oil cooler is finished, the telescopic end of the hydraulic push rod 7 stretches out to drive the negative pressure push head 8 to move downwards, positive pressure is formed in the downward moving process of the negative pressure push head 8, the oil inside the oil drum 1 is pushed out through the positive pressure of the drain valve 5, and flows back to the inside the oil cooler, impurities in the oil can be filtered by utilizing the filtration of the first filter disc 11 and the second filter disc 12 when the oil is pushed back in the positive pressure, so that the whole operation is simple, the operation is efficient, the clean operation of the oil can be guaranteed, and the clean operation is convenient.

Claims

1. The utility model provides a hydroelectric set thrust oil cooler overhauls frock, includes oil drum (1), its characterized in that, oil drum (1) barrel one side is located middle part position department intercommunication has oil extraction valve (3), and oil drum (1) barrel bottom is located awl bottom position department intercommunication has drain valve (5), arm power frame (6) are installed to oil drum (1) barrel top, the support mid-mounting of arm power frame (6) has hydraulic push rod (7), negative pressure push head (8) that extend to oil drum (1) cavity inside are installed to the flexible end of hydraulic push rod (7), the cavity mid-mounting of oil drum (1) has the machine to strain the mechanism;

the machine filter mechanism comprises a first transmission shaft (9) and a second transmission shaft (10) which are sequentially arranged in the middle of a cavity of the oil drum (1) from top to bottom, a first filter disc (11) matched with the oil drum (1) is sleeved at the end of a shaft rod of the first transmission shaft (9), and a second filter disc (12) matched with the oil drum (1) is sleeved at the end of a shaft rod of the second transmission shaft (10).

2. The hydraulic generator set thrust oil cooler overhauling tool according to claim 1, wherein a pushing hand frame (2) is arranged on the other side of the cylinder body of the oil cylinder (1) at the middle position, and two groups of pushing foot frames (4) are arranged at the bottom of the cylinder body of the oil cylinder (1) in a pairwise symmetrical mode.

3. The hydraulic generator set thrust oil cooler overhauling tool according to claim 1, wherein the negative pressure pushing head (8) is of a cylindrical structure, and the outer diameter of the cylinder of the negative pressure pushing head (8) is matched with the inner diameter of the cavity of the oil cylinder (1).

4. The hydraulic generator set thrust oil cooler overhauling tool according to claim 1, wherein the first filter disc (11) and the second filter disc (12) are stainless steel filter screens, and disc rims of the first filter disc (11) and the second filter disc (12) are wrapped with sealing rings attached to the oil drum (1).

5. The hydraulic generator set thrust oil cooler overhauling tool according to claim 1, wherein a belt pulley A (14) penetrating through the oil drum (1) is installed at one end output end of the first transmission shaft (9), a belt pulley B (15) penetrating through the oil drum (1) is installed at one end output end of the second transmission shaft (10), and the belt pulley A (14) is connected with the belt pulley B (15) through a transmission belt (16).

6. The hydraulic generator set thrust oil cooler overhauling tool according to claim 1, wherein the output end of the other end of the first transmission shaft (9) is provided with a transmission motor (13) fixed on the oil drum (1).