CN218377627U - Online oiling, oil filtering and oil changing system for fan gear box of cooling tower of circulating water field - Google Patents

Abstract

The utility model provides a circulating water field cooling tower fan gear box refuels on line, oil strain, trades oil system, including circulating oil pump, circulating oil pump's output communicates in proper order has oil spill valve, switching-over valve, second solenoid valve and advances oil pipe, circulating oil pump's input communicates in proper order has third solenoid valve, cooler, lubricating oil filter, first solenoid valve and returns oil pipe, third solenoid valve still communicates there is clean lubricating-oil tank, advance oil pipe and return oil pipe's the common intercommunication gear box of the other end, be provided with level gauge and thermometer in the gear box, level gauge, thermometer and solenoid valve all communicate with PLC system communication, according to different oil levels, oil temperature, by opening and close realization gear box automatic oiling, oil strain, the oil change of different solenoid valves of PLC control. The system solves the problems of lubricating oil waste of the fan gear box and inconvenient replacement in the prior art.

Description

Online oiling, oil filtering and oil changing system for fan gear box of cooling tower of circulating water field

Technical Field

The utility model belongs to pharmaceutical chemical water treatment field, concretely relates to circulating water field cooling tower fan gear box refuels on line, oil strain, trades oily system.

Background

The circulating water field is an important supporting project for pharmaceutical and chemical enterprises, water cooling is realized by a cooling tower, and a fan of the cooling tower is arranged in a wind tube at the top of the tower. The fan gear box is an important part of a fan, and the quality of lubricating oil in operation directly influences the service life of the gear box. The lubricating oil can be carbonized and polluted during operation, so that the protective effect of the lubricating oil on the gear is reduced; in addition, the oil temperature of the gear box is too high due to the reasons of higher environmental temperature, repeated compression of gears, insufficient oil quantity, pollution of lubricating oil and the like, and the fan needs to be stopped frequently to cool. At present, lubricating oil of a fan gear box of a circulating water field cooling tower of a pharmaceutical and chemical enterprise does not have a filtering system, and is generally replaced at regular intervals, so that the lubricating oil is greatly wasted; the replacement process generally uses the hoist to transfer clean lubricating oil to the circulating water field top of the tower, closes the fan, enters the dryer by the manual work, adds lubricating oil into the gear box. Under the conditions that the automation degree of the current pharmaceutical and chemical enterprises is improved, the proportion of personnel is reduced, and the ages of workers are generally large, mechanical equipment needs to be called every time in the operation, the condition that the personnel enter the tower is very inconvenient and unsafe, the temperature and the humidity in the tower are high, the working environment is severe, and numerous potential safety hazards are caused to the bodies of the workers. How to improve the change of current cooling tower fan gear box lubricating oil becomes the difficult problem that urgently needs to be solved.

SUMMERY OF THE UTILITY MODEL

According to the technical problem who proposes, the utility model provides a circulating water field cooling tower fan gear box refuels on line, oil strain, trades oily system, and this system has solved the extravagant and inconvenient condition of change of fan gear box lubricating oil that exists among the prior art.

The utility model discloses a technical means as follows:

circulating water field cooling tower fan gear box refuels on line, oil strain, trades oil system, including circulating oil pump (1), circulating oil pump's output communicates in proper order has oil spilling valve, switching-over valve, second solenoid valve and advances oil pipe, circulating oil pump's input communicates in proper order has third solenoid valve, cooler, lubricating oil filter, first solenoid valve and returns oil pipe, the third solenoid valve still communicates there is clean lubricating-oil tank, advance oil pipe and return oil pipe's the common intercommunication gear box of the other end, be provided with level gauge and thermometer in the gear box, level gauge, thermometer and solenoid valve all communicate with PLC system communication, according to different oil levels, oil temperature, by opening and close realization gear box automatic oiling, oil strain, the oil change of different solenoid valves of PLC control.

Preferably, the oil inlet pipe and the oil return pipe are both provided with a vent valve.

Preferably, the emptying valve is in a normally closed state.

Preferably, the reversing valve is communicated with a waste lubricating oil tank.

Preferably, the oil inlet pipe and the oil return pipe are both provided with manual valves.

Preferably, the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve are all in a normally closed state, and the manual valve is in a normally open state.

The utility model has the advantages that:

(1) Through the design of PLC system, circulating oil pump and pipeline, need to transfer machinery and artifical participation process in the reduction lubricating oil change process, improve workman operational environment.

(2) The liquid level gauge can better control the oil level and reduce gear damage caused by too little oil.

(3) Carry out the automatic filtration to lubricating oil through control system, increase new freshness, increase the change cycle, reduce the waste of lubricating oil.

(4) The fan overload shutdown caused by overhigh temperature is reduced, and the loss caused by shutdown is reduced.

Drawings

FIG. 1 is a system block diagram of the present invention;

in the figure, 1, a circulating oil pump, 2, a clean lubricating oil tank, 3, a cooler, 4, a lubricating oil filter, 5, a waste lubricating oil tank, 6, an oil overflow valve, 7, a second electric valve, 8, a first electric valve, 9, an oil inlet pipe, 10, an oil return pipe, 11, a gear box, 12, an alarm device, 13, a third electromagnetic valve, 14, a reversing valve, 15, an oil inlet pipe emptying valve, 16 and an oil return pipe emptying valve.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in figure 1, the utility model discloses an on-line oil filling, oil filtering and oil changing system for a fan gear box of a circulating water field cooling tower, wherein the lubricating oil of the fan gear box is provided with a temperature and liquid level multi-parameter probe, a plurality of fan gear box oil inlet pipes and oil return pipes are respectively connected in parallel, the oil inlet pipe and the oil return pipe of each tower are respectively provided with a solenoid valve outside an air duct,

the multiple fan gear boxes are respectively connected in parallel through an oil inlet pipe 9 and an oil return pipe 10, the oil inlet pipe and the oil return pipe of each tower are respectively provided with an electromagnetic valve outside the air duct, the multiple fans share one lubricating oil cooling and filtering device placed under the tower, and all the gear boxes are added with lubricating oil of the same brand for preventing different brands of lubricating oil from being mixed.

Circulating oil pump 1 passes through cooler 3, lubricating oil filter 4, first solenoid valve 8, return oil pipe 10 and gear box 11 intercommunication, set up alarm device 12 in the gear box, this alarm device includes thermometer and level gauge, the gear box other end communicates into oil pipe 9 in proper order, switching-over valve 14, oil spill valve 6, last oil spill valve intercommunication circulating oil pump 1, oil inlet end at circulating oil pump communicates clean lubricating-oil tank 2 through third solenoid valve 13, switching-over valve 4 communicates useless lubricating-oil tank 5, all solenoid valves all communicate with PLC control system communication. Manual valves are arranged at the oil inlet end and the oil outlet end of the filter and the oil inlet end and the oil outlet end of the cooler. The oil inlet pipe and the oil return pipe are both provided with a vent valve.

According to different oil levels and oil temperatures, the system realizes automatic oil filling, oil filtering and oil changing of the gear box by controlling the opening and closing of different electromagnetic valves through a PLC (programmable logic controller), and the specific process is as follows:

(1) Automatic oil filtering: the oil temperature of starting and stopping the pump of the oil pool is preset. When the oil temperature is too high, the thermometer of the gear box alarms, the first electromagnetic valve 8 and the second electromagnetic valve 7 are opened, the circulating oil pump is started 1, lubricating oil passes through the first electromagnetic valve 8, the manual valve, the lubricating oil filter 4, the lubricating oil cooler 3, the circulating oil pump 1, the oil spill valve 6, the reversing valve 14, the second electromagnetic valve 7 and the oil inlet pipe 9 from the oil return pipeline 10 in sequence to filter and cool the lubricating oil and return to the gear box, when the set pump stopping temperature is reached, the oil pump stops the pump, and the first electromagnetic valve and the second electromagnetic valve are closed.

(2) Automatic oiling: the oil level of the oil pool for starting and stopping the pump is preset, when the oil level is too low, the gear box liquid level meter gives an alarm, the circulating oil pump 1 is started, the third electromagnetic valve 13 and the second electromagnetic valve 7 are opened, and oil is added to the gear box. And when the set pump stopping liquid level is reached, the circulating oil pump stops pumping, and the second electromagnetic valve and the third electromagnetic valve are closed.

(3) Automatic oil change: when the oil change period is reached, the PLC manually controls the opening of the first electromagnetic valve 8 and the circulating oil pump 1, the reversing valve 14 is adjusted to the waste lubricating oil receiving tank 5, and the lubricating oil of the gear box is conveyed to the waste lubricating oil tank; and opening an oil inlet pipe emptying valve 15 and an oil return pipe emptying valve 16 to empty the lubricating oil in the pipeline.

(4) The cooling principle of the lubricating oil cooler is that low-temperature airflow passes through the outer heat transfer fins of the radiator under the action of the cooler by utilizing the temperature difference between air and oil, so that heat is forcibly cooled; heat transfer fins are also arranged in the lubricating oil passage of the radiator, so that the heat exchange area is greatly increased, and the radiating efficiency is improved.

Lubricating oil discharged from the gear box firstly enters the lubricating oil filter, is filtered to remove impurities and then enters the circulating cooling system, so that the cleanness of lubricating grease is ensured, the service life of gears in the gear box is prolonged, and a lubricating oil circulating pump and the heat dissipation finned tubes are protected. And the lubricating oil is washed out from the oil pool of the gear box or the clean lubricating oil tank through a circulating oil pump, and the lubricating oil is conveyed back to the oil pool of the gear box after being purified, filtered and cooled.

Set up the oil spill valve behind the oil pump, the oil spill valve mainly plays the safety protection effect, and stable system pressure, under low temperature state, because the viscosity of lubricating oil is higher, motor pump exit lubricating oil pressure is very big, if directly get into the oil bath, can cause the harm to pipeline and oil bath, consequently sets up the overflow valve at motor pump exit, overflow valve lug connection gear box.

The normal position of the reversing valve is a vertical connecting pipe, and only when oil is changed, the waste lubricating oil tank is connected

The manual valves are all valves used during maintenance and are normally open at ordinary times; the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve are in a normally closed state, and the opening of the valves is controlled by the PLC according to preset oil level and oil temperature.

The two emptying valves are in a normally closed state, are arranged at the bottoms of the vertical pipes from the top of the tower to the ground, are used for emptying the pipeline and are in a normally closed state.

The control system adopts PLC automatic control and is integrated in the control cabinet, when a manual/automatic switch on the field box selects an automatic mode, oil filtering and oiling are automatically controlled by the DCS, the DCS automatically acquires oil level and oil temperature data of the gear box and controls the opening and closing of the electromagnetic valve. When the PLC fails or needs manual operation, the manual/automatic switch on the field box is selected to be manual, and the switch of the electric valve can be controlled through the start-stop button on the field box.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (6)

1. Circulating water field cooling tower fan gear box refuels on line, oil strain, trades oil system, a serial communication port, including circulating oil pump (1), circulating oil pump's output communicates in proper order has spill valve (6), switching-over valve (14), second solenoid valve (7) and advances oil pipe (9), circulating oil pump's input communicates in proper order has third solenoid valve (13), cooler (3), lubricating oil filter (4), first solenoid valve (8) and returns oil pipe (10), the third solenoid valve still communicates clean lubricating oil tank (2), advance oil pipe and return oil pipe's the other end and communicate gear box (11) jointly, be provided with level gauge and thermometer in the gear box, level gauge, thermometer and solenoid valve all communicate with PLC system communication, according to different oil levels, oil temperature, realize that the gear box is automatic to refuels, oil strain, trades oil by opening and close of different solenoid valves of PLC control.

2. The on-line oil filling, oil filtering and oil changing system of the fan gear box of the circulating water field cooling tower according to claim 1, wherein the oil inlet pipe and the oil return pipe are provided with vent valves.

3. The on-line oil filling, oil filtering and oil changing system of the fan gear box of the circulating water field cooling tower as claimed in claim 2, wherein the emptying valve is in a normally closed state.

4. The on-line oil filling, oil filtering and oil changing system of the fan gear box of the circulating water field cooling tower as claimed in claim 1, wherein the reversing valve (14) is communicated with a waste lubricating oil tank (5).

5. The on-line oil filling, oil filtering and oil changing system of the fan gear box of the circulating water field cooling tower according to claim 1, wherein the oil inlet pipe and the oil return pipe are both provided with manual valves.

6. The on-line oil filling, oil filtering and oil changing system of the fan gear box of the circulating water field cooling tower according to claim 5, wherein the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve are all in a normally closed state, and the manual valve is in a normally open state.

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