CN201795039U - Mechanical sealing type centralized oil supply system device - Google Patents

Abstract

The utility model relates to a mechanical sealing type centralized oil supply system device. A tank cover of an oil tank is provided with a pressure limiting variable vane pump, an outlet end of the pump is connected with an inlet oil pipe, the other end of the inlet oil pipe is connected with an oil inlet hole of an inlet integration body, an outlet oil pipe of the inlet integration body is connected with an outlet integration body, the tank cover is provided with an oil outlet hole unit connected with the outlet integration body, an oil return hole unit on the tank cover is connected with the outlet integration body, the oil tank is provided with a heat exchanger, and the inlet integration body is provided with an energy accumulator. The system can ensure that the flow and pressure of oil fed into each set of mechanical seal are within the set ranges. The variable pump is applied to control the pressure of a main oil channel, thereby avoiding the overflow loss of a constant displacement pump. A one-way valve on the main oil channel and the energy accumulator can achieve the pressure maintaining effect when the pump stops operating. A pressure reducing valve controls the pressure of each branch, and a throttle valve is arranged on each branch to control the flow, and the one-way valve on each branch can achieve the pressure backing effect to ensure the oil pressure in a sealed chamber. The system is particularly suitable for sealing of lubricants.

Description

A kind of mechanical seal central lubricating system device

Technical field

The utility model relates to a kind of mechanical seal device, relates to a kind of mechanical seal oil supplying device specifically.

Background technique

In petrochemical industry, petrochemical plant often will play the pump of same function or still and concentrate and be designed to a unit in Design of device, and they are put together, and be convenient to management.The employing single end face machine envelope that these equipment have, employing Double End that also has or tandem envelope no matter be single-ended or both-end, adopt the identical scheme of sealflushing mostly.In the design of Double End and tandem envelope, need a cover sealing liquid circulatory system, between side medium and atmospheric side machine envelope, inject sealing liquid, play the shutoff medium, the effect of lubrication and seal and heat radiation.In the past, every pump or still need to install separately a cover system, cause equipment purchase cost and maintenance cost height, and when the pump termination of pumping, system are inoperative, causes production safety hidden danger.

Summary of the invention

At the defective that existing machinery sealing oil supplying device exists, the utility model provides a kind of Utilization ratio height, a kind of mechanical seal oil supplying device that operating cost is low.

Solving the problems of the technologies described above the concrete technical measures of being taked is: a kind of mechanical seal central lubricating system device, it is characterized in that: case lid (2) is housed on the fuel tank (1), limited pressure variable leaf pump (3) is housed on case lid (2), by motor driving, one end of inlet oil pipe (4) connects the outlet end of limited pressure variable vane pump (3), the other end of inlet oil pipe (4) connects the oil inlet hole that is contained in the inlet conglomerate (18) on the case lid (2), and inlet conglomerate (18) connects outlet conglomerate (19) with outlet oil pipe (5); On oil pump (3) inlet port mouth piece oil purifier (6) is housed, at outlet conglomerate (19) oil outlet unit (7) is housed, on the inlet conglomerate (18) fuel-displaced one-way valve (16) is housed, fuel-displaced one-way valve (16) connects piloted reducer (17); In outlet conglomerate (19) spill port unit (8) is housed also, communicates with return check valve (21) and throttle valve (22) on being contained in outlet conglomerate (19); Heat exchanger (9) is housed on the fuel tank (1), on inlet conglomerate (18) and outlet conglomerate (19), pressure gauge (10) is housed, on case lid (2), be provided with oil hole unit (11), in fuel tank (1) side level meter (12) is housed, overflow oil pipe (13) is housed on the oil pump (3), overflow oil pipe (13) oil outlet connects fuel tank (1), and floating-ball level switch (14) and bimetallic thermometer (15) are housed on case lid (2), on inlet conglomerate (18) accumulator (20) is housed.

The beneficial effects of the utility model: the system that disperses is integrated, form a cover system, can give several equipment feed flows simultaneously, reduced cost, when an independent equipment stopped, system also can normally move, and has improved usage ratio of equipment.This system wants to guarantee to enter flow that every cover machine seals and pressure in the scope of setting.Adopt hydraulic control technology, limited pressure variable vane pump can be controlled the pressure of working connection, avoids the spill losses of metering pump.Working connection one-way valve and accumulator play the pressurize effect when pump is out of service.Reduction valve is controlled the pressure of each branch road, loads onto throttle valve at each branch road, control flow rate, and the one-way valve on the branch road plays the back pressure effect, guarantees the pressure of Seal cage fluid.Native system is particularly useful for the sealing liquid of lubricant oil.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the left view of Fig. 1.

Fig. 3 is the plan view of Fig. 1.

Fig. 4 the utility model fuel feeding theory diagram.

Embodiment

Be described with reference to the accompanying drawings structure of the present utility model.

A kind of mechanical seal central lubricating system device, as Fig. 1, Fig. 2, shown in Figure 3, fuel tank 1 is welded by the carbon structural steel plate, and case lid 2 is housed on fuel tank 1, and limited pressure variable vane pump 3 is housed on the case lid 2; Inlet oil pipe 4 connects limited pressure variable vane pump 3 outlet end, the inlet conglomerate 18 that inlet oil pipe 4 connects on the case lid 2, and inlet conglomerate 18 usefulness outlet oil pipe 5 connects outlet conglomerate 19; On limited pressure variable vane pump 3 inlet ports mouth piece oil purifier 6 is housed, oil purifier prevents that impurity from entering in the system; Case lid 2 is provided with six oil outlet unit 7, be contained in the outlet integrated 19, oil outlet unit 7 is made up of ball valve and union, on the inlet conglomerate 18 fuel-displaced one-way valve 16 is housed, fuel-displaced one-way valve 16 connects piloted reducer 17, and the oil that regulates through one-way valve 16 and piloted reducer 17 is flowed into different pump or still through oil outlet unit 7; On the outlet conglomerate 19 the spill port unit 8 identical with oil outlet unit 7 quantity is housed, outlet conglomerate 19 is equipped with return check valve 21 and throttle valve 22, the oil that pump or still reflux through spill port unit 8, return check valve 21, throttle valve 22, outlet conglomerate 19 turn back to fuel tank 1; One-way valve 21 plays the effect of back pressure, sets up certain pressure in system, throttle valve 22 control flow rate; Heat exchanger 9 is housed on fuel tank 1, plays cooling oil temperature, the frictional heat that the machine envelope can be produced is taken away, and prevents end face vaporization and distortion; On outlet conglomerate 19 and inlet conglomerate 18, pressure gauge 10 is housed, can shows fuel-displaced respectively and pressure oil return, so that in time adjust; Oil hole unit 11 is housed on case lid, is tank filling; Level meter 12 is contained in fuel tank 1 side, can show the liquid level of oil, so that repairing in time; Overflow oil pipe 13 is connected with oil pump 3, can carry pump unnecessary fluid to send fuel tank 1 back to, plays the effect of overflow.Floating-ball level switch 14 is housed on case lid 2, can monitors, report to the police when being lower than reference value the liquid level of fuel tank; Bimetallic thermometer 15 is housed on case lid, can monitors, so that the flow of cooling water in the control heat exchanger oily temperature; On inlet conglomerate 19 accumulator 20 is housed, is filled with the gas of certain pressure in the accumulator 20, the pressure of gas is set by the pressure of system, has stoped the backflow of fluid owing to one-way valve 16 during termination of pumping, so can carry out pressurize to system.

The fuel feeding principle of the utility model mechanical seal central lubricating system device as shown in Figure 4, after limited pressure variable vane pump 3 startings, the oil of fuel tank 1 enters into inlet conglomerate 18 after filtering through mouth piece oil purifier 6, the pressure of fluid is adjusted by the pressure regulating screw on the limited pressure variable vane pump 3, the oil that enters into inlet conglomerate 18 flows into fuel-displaced one-way valve 16, the effect of this one-way valve is that fluid refluxes when preventing the pump stall, so that use the accumulator pressurize.After further adjusting to the needed pressure of system by piloted reducer 17 again, be assigned in each pump chamber or the still chamber, heat radiation lubricated for the machine envelope through oil outlet unit 7 by outlet conglomerate 19.Oil process spill port unit 8 that refluxes and return check valve 21, throttle valve 22, outlet conglomerate 19 flow back to fuel tank 1.The effect of return check valve 21 is in order to set up " back pressure ", to set up different back pressure numerical value by different cracking pressures is set, oil sealing being moved under certain pressure.For the operation of supervisory system, be equipped with instrument such as pressure gauge, floating-ball level switch, bimetallic thermometer, oil stream display device, oil stream display device is contained in the spill port unit.This system wants to guarantee to enter flow that every cover machine seals and pressure in the scope of setting.Adopt hydraulic control technology, variable capacity oil pump can be controlled the pressure of working connection, avoids the spill losses of metering pump.Working connection one-way valve and accumulator play the pressurize effect when pump is out of service.Reduction valve is controlled the pressure of each branch road, loads onto throttle valve at each branch road, control flow rate, and the one-way valve on the branch road plays the back pressure effect, guarantees the pressure of Seal cage fluid.

System normally moves for assurance, in time grasps the operation conditions of understanding system, is provided with pressure alarm and liquid level warning in system, realizes remote monitoring.At fuel tank internal heat exchanger is set, reduces the oil temperature.Thermometer is set on oil circuit, adjusts the flow of control cooling water according to the oil temperature.

The system that disperses is integrated, form a cover system, can give several equipment feed flows simultaneously, reduced cost, as long as pump or still do not stop simultaneously, system also can normally move, and has improved usage ratio of equipment.It is lubricated oil condition that native system is particularly useful for sealing liquid.

Claims (1)

1. mechanical seal central lubricating system device, it is characterized in that: case lid (2) is housed on the fuel tank (1), oil pump (3) is housed on case lid (2), one end of inlet oil pipe (4) connects the outlet end of oil pump (3), the other end of inlet oil pipe (4) connects the oil inlet hole that is contained in the inlet conglomerate (18) on the case lid (2), inlet conglomerate (18) connects outlet conglomerate (19) with outlet oil pipe (5), on oil pump (3) inlet port, mouth piece oil purifier (6) is housed, case lid (2) is provided with oil outlet unit (7), oil outlet unit (7) is connected with inlet conglomerate (18), on the inlet conglomerate (18) fuel-displaced one-way valve (16) is housed, fuel-displaced one-way valve (16) connects piloted reducer (17), on the outlet conglomerate (19) spill port unit (8) is housed, return check valve (21) and throttle valve (22) are housed on the spill port unit (8), connect outlet conglomerate (19), heat exchanger (9) is housed on the fuel tank (1), on inlet conglomerate (18) and outlet conglomerate (19), pressure gauge (10) is housed, on case lid (2), be provided with oil hole unit (11), in fuel tank (1) side level meter (12) is housed, overflow oil pipe (13) is housed on the oil pump (3), overflow oil pipe (13) oil outlet connects fuel tank (1), floating-ball level switch (14) and bimetallic thermometer (15) are housed on case lid (2), on inlet integrated package (19), accumulator (20) are housed.

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