Device to control lifting-digging mechanisms

FIELD: construction.

SUBSTANCE: device to control lifting-digging mechanisms comprises a compressor, an oil separator and a receiver, which are pneumatically connected to each other in series. The outlet of the receiver is pneumatically connected to inputs of adsorbers with evenly distributed heaters, and outlets of adsorbers are pneumatically connected to a consumer. The compressor is equipped with a suction filter. The filter is made in the form of a double-layer jacket with an air cavity, connected by a nozzle of input of heating regenerated air. Adsorbers are equipped with a thermoelectric generator comprising a through channel for regenerated air and a through channel for dried compressed air, inside of which there are accordingly hot and cold ends of a set of differential thermocouples.

EFFECT: reduced power inputs when producing compressed air of specified quality for a device of lifting-digging mechanisms control.

3 dwg

 

The invention relates to pneumatic control systems for excavators and cranes, working in freezing temperatures.

Known control device lifting and digging mechanisms (see RF patent 2158805, IPC E02F 9/22, publ. 10.11.2000)containing the compressor, moisture separator and receiver, pneumatically connected in series to each other, and the output of the receiver is pneumatically connected to the inputs of the adsorbers with uniformly distributed heaters, and conclusions of the adsorbers is pneumatically connected to the consumer, the compressor is equipped with a suction filter, comprising a housing with a conical bottom and a hole in its lower part, a fitting conclusion purified air trap located in the hole of the base plate, the reflective septum, nipples input cleanable air filter housing made in the form of a double-layer shirt with an air cavity, which is connected by a hose warming regenerated air through the pipeline and control valve with adsorbers and fitting output heating regenerated air to the atmosphere.

The disadvantage is the power consumption due to an increase in aerodynamic drag of the air filter due to the presence in the intake atmospheric air a significant amount of solid particles technologies the dust Oh, determined by specific operating conditions, and the presence of solid particles in the cavity of the compressor not only reduces its mass productivity on compressed air, but also contributes to emergency mode, which ultimately reduces the efficiency of lifting and digging mechanisms.

Known control device lifting and digging mechanisms (see RF patent 2400598, IPC E02F 9/22, publ. 27.09.2010)containing the compressor, moisture separator and receiver, pneumatically connected in series to each other, and the output of the receiver is pneumatically connected to the inputs of the adsorbers with uniformly distributed heaters, and conclusions of the adsorbers is pneumatically connected to the consumer, while the compressor is equipped with a suction filter, comprising a housing with a conical bottom and a hole in its lower part, a fitting conclusion purified air trap located in the hole of the base plate, the reflective wall, the hose cleaned air, and the filter housing made in the form of a double-layer shirt with an air cavity, which is connected by a hose warming regenerated air through the pipeline and control valve with the adsorbers and a fitting conclusion to the atmosphere warming the reactivated air, and on the inner surface of the nozzle entering the cleaned air is, made in the form of a tapering nozzle, are curved groove with a profile in the form of the "swallow's tail", and its inlet is made of a circular groove, combined with a device for removing contaminants, with a circular groove is connected with the curved grooves and with a grid.

The disadvantage is the amount of energy pneumatic control systems, excavators and cranes, with a complicated scheme of supply of electric energy as device management, and lighting - the body of the excavator and crane, where pneumatic equipment, due to the necessity of deciding on mobile electrotechnical or the complexity of the connection to stationary electrical networks.

The technical object of the present invention is to reduce power consumption when receiving compressed air required quality for device control lifting and digging mechanisms by reducing the consumption of electrical energy emergency lighting body of an excavator or crane and/or supply electricity to devices to control and regulate the production of pneumatic energy.

The technical result for the reduction of electrical energy consumed in the production of compressed air, is achieved in that the control device lifting and digging fur the isms contains the compressor, moisture separator and receiver, pneumatically connected in series to each other, and the output of the receiver is pneumatically connected to the inputs of the adsorbers with uniformly distributed heaters, and conclusions of the adsorbers is pneumatically connected to the consumer, while the compressor is equipped with a suction filter, comprising a housing with a conical bottom and a hole in its lower part, a fitting conclusion purified air trap located in the hole of the base plate, the reflective wall, the hose cleaned air, and the filter housing made in the form of a double-layer shirt with an air cavity, which is connected by a hose warming regenerated air through the pipeline and control valve with adsorbers and a fitting conclusion to the atmosphere warming regenerated air, and on the inner surface of the fitting input of cleaned air, made in the form of a tapering nozzle, are curved groove with a profile in the form of the "swallow's tail", and its inlet is made of a circular groove, combined with a device for removing contaminants, with a circular groove is connected with the curved grooves and with a grid, with the adsorbers provided with a thermoelectric generator, comprising a passage for the reactivated about the one channel for the drying of compressed air, inside of which are, respectively, "hot" and "cold" ends of the set of differential thermocouples, and the input port for oshiwambo compressed air is connected to the output of the receiver and its output is pneumatically connected to the inputs of the adsorbers, and the entrance pass for regenerated compressed air adsorbers, and its exit through the pipe and control valve connected to the housing of the suction filter in the form of a double-layer shirt.

Figure 1 shows a schematic diagram of the control device of lifting and digging mechanisms; figure 2 - profile curved grooves in the form of a "dovetail"; figure 3 - the inner surface of the fitting input of cleaned air to the device remove the dirt.

The device consists of a series connected system pipelines (lines) 1 suction filter 2, compressor 3, the moisture separator 4, a receiver 5, two cyclically operating adsorbers 6 and 7, a heater 8 with thermostats 9, secured to each heater element 8. In this case the suction filter 2 includes a housing 10 made in the form of a double-layer shirt with an air cavity, a conical bottom 11 with a hole 12 in its lower part, a fitting conclusion cleaned intake air 13, fittings enter cleaned air 14, condens tootsadi 15, located in the bore 12 of the conical bottom 11, the reflective wall 16, the hose heating air 17, 18 pipe connecting through the control valve 9 nozzle 17 with adsorbers 6 and 7, the nozzle of the discharge of heated air into the atmosphere 20, with the control valve 19 also provides an air vent after the regeneration of the adsorbers in a positive atmosphere at ambient temperatures. On the inner surface 21 of fitting the input of cleaned air 14 made in the form of a tapering nozzle, are curved groove 22 with a profile in the form of the "swallow's tail", and his entrance opening 23 is made in a circular groove 24, connected to the removal device of contamination 25, with a circular groove 24 is connected with a curved grooves 22 and provided with a grid 26.

The adsorbers 6 and 7 equipped with a thermoelectric generator 27 includes a passage 28 for regenerated compressed air and a passage 29 for the drying of compressed air. Inside the flow channel 28 for regenerated compressed air are "hot" ends 30 of the set of differential thermocouples 31 and the inside flow channel 29 for the drying of compressed air are "cold" ends 32 of the set of differential thermocouples 31. Entrance 33 passages 29 for the drying of compressed air connected to the input of the receiver 5, and its output 34 is pneumatically connected to the inputs of the adsorbers 6 and 7. The entrance bore 35 of the channel 28 for regenerated compressed air is connected to the adsorbers 6 and 7, and its output 36 through pipe 18 and valve 19 is connected with the body 10 of the suction filter 2 in the form of a double-layer shirt with an air cavity.

The device operates as follows.

The specific operating conditions, lifting and digging mechanisms because sources of electrical energy are away from the quarries where they are working, and the main equipment is electric. All of this increases the cost of loading rock mass, and therefore there is a need to produce electricity by using the heat capacity of the reactivated in the absorbers 6 and 7 of the compressed air in thermoelectric generator 27.

In this case, with the constant presence of significant amounts of solid particles technological and atmospheric dust sucked in by the compressor 3 atmospheric air this mass of dirt is moved to the hose cleaned air 14 and is in contact with the grid 26, while the larger particles are separated from the stream, and smaller through the inlet hole 23 penetrates into the internal cavity of the fitting input of cleaned air 14. As the hose cleaned air 14 is accomplished in the form of a tapering nozzle, the flow of intake air pollution increases its speed and moving on curved grooves 22, twists. In the solid particles that have passed the grid 26, the centrifugal force is discarded to the inner surface 21 of fitting the input of cleaned air 14 and fill the cavity of curvilinear grooves 22, where they can accumulate, and due to data execution cavities on the profile in the form of a "dovetail" not falling again in the moving stream, and move to the side of the circular grooves 24, where under the action of gravity moved to the device removing contaminants 25 for subsequent removal manually or automatically (not shown in figure 1).

The remaining fine solid particles from a flow of swirling intake of atmospheric air, leaving the fitting input of cleaned air 14 made in the form of a tapering nozzle, impinges on the reflective wall 16. As a result of contact of the suction flow of atmospheric air with a reflective wall 16 of the particulate pollution from a drop or lithobates moisture in the majority fall into the conical bottom 11, which are accumulated in the accumulation and released from the suction filter 2 valve 15 through the opening 11.

Cleaned intake air through the fitting conclusion oceanog the intake air 13 via the air duct 1 is supplied to the compression in the compressor 3, then through the separator 4, a receiver 5 is fed to the input 33 of the lock channel 29 for drying compressed air, which is placed in contact with him "cold" ends 32 of the set of differential thermocouples 31 and output 34 is directed to the drying in the adsorbers, for example in the adsorber 6. Cleaning the intake of atmospheric air from the solid particles and drip or lithobates moisture reduces the intensity of production of pneumonaie from 12% to 18% depending on operating conditions of the compressor.

The dried compressed air is supplied to the pneumatic equipment management system lifting and digging machines. At the same time a portion of the dried air is directed into the second adsorber 7, which is in the regeneration mode. First as the regenerative air heater element 8 is activated by the controller 9 and heats the air. The second heater element regenerating air is supplied at a temperature of 100C. the Power consumption of the second heater element is below the first power and the sum of the costs of heat loss by the body of the adsorber in the environment and heat needed for regeneration. Similarly, there are other elements of the heater, and each of them has an individual connection to the power supply via the controller 9.

Suction filter compressor 3 is in the body location, where the suction air temperature close to the ambient temperature or the suction filter 2 is taken out from the body of the room. As a result, when low ambient temperatures, and especially when snow storms, frost or rain observed accumulation of solid impurities and drop or lithobates moisture in the cross section of the inlet air filter. This ultimately leads to increased flow resistance in the suction path of the compressor 3 and, consequently, increases the energy consumption for production of compressed air. In addition, the presence of additional moisture in compressed air leads to more severe conditions of moisture separator 4, and the possible entry of moisture into the adsorbers 6 and 7 leads to cracking of the grains of the adsorber, which dramatically affects the drying process and significantly reduces the efficiency of operation of pneumatic equipment lifting and digging mechanisms. Therefore, the proposed design of the suction filter 1 compressor 3 provides additional cleaning atmospheric air, especially at low temperatures environment.

Compressed air after regeneration, for example, the adsorber 7 with a temperature of about 80C is sent to the output 35 of the channel 28 for regenerated compressed air, which is placed in contact with it "hot" ends 30 of the set of differential thermocouples 31.

The implementation of differential thermocouples 31, for example, chromel-Copel, as the cheapest of the known materials and with the temperature around 80C, observed on the work of lifting and digging mechanisms, thermo-EMF to 4.5 mV (see, for example, T.M. Ivanova Thermal measurements and instruments. M.: Energoatomizdat, 1984. 230 C.), provides a set of sets of differential thermocouples 31 voltage 1236 V, which is sufficient for emergency lighting body lifting and digging mechanism that hosts adsorption osushivaya installation, and if necessary to power the automatic control system of this unit (see, for example, Thermal engineering fundamentals of heat. Thermal engineering experiment. The Handbook. Under the General Ed. Zorin V. M. M.: Energoatomizdat, 1988. 510 S.).

After contact with "hot" ends 30 of the set of differential thermocouples regenerated compressed air through the exit bore 36 of the channel 28 for regenerated compressed air through the pipeline 18 is directed through the control valve 19 to the hose heating air 17 and fills the air cavity of the double layer shirt that made the body 10 of the suction filter 2. Heating the air, giving the heat to the housing 10, is discharged into the atmosphere through the nozzle 20.

When s is positive ambient temperatures, when you do not want the heating body 10 of the suction filter 2, the heated compressed air after regeneration of the adsorbers 6 or 7 through the pipe 18 through a control valve 19 is directly emitted into the atmosphere. Drip the moisture emitted from the regenerating air to the atmosphere and partly newly arriving with atmospheric air into the intake filter 2 compressor 3 through the fitting 14, bumping on the reflective wall 16, accumulates in the bottom 11 and through valve 15 is thrown out.

The originality of the proposed technical solution is that the supply of adsorbers thermoelectric generator allows using the heat capacity of the regenerated compressed air, reducing energy costs for emergency lighting body lifting and digging mechanism and/or to reduce the cost of electricity to power the automated control system of drying compressed air, which ultimately increases the efficiency of excavators and cranes in General.

The control unit lifting and digging mechanisms that contains the compressor, moisture separator and receiver, pneumatically connected in series to each other, and the output of the receiver is pneumatically connected to the inputs of the adsorbers with uniformly distributed heaters and the output of the adsorbers is pneumatically connected to the consumer, when this compressor is equipped with a suction filter, comprising a housing with a conical bottom and a hole in its lower part, a fitting conclusion purified air trap located in the hole of the base plate, the reflective wall, the hose cleaned air, and the filter housing made in the form of a double-layer shirt with an air cavity, which is connected by a hose warming regenerated air through the pipeline and control valve with adsorbers and a fitting conclusion to the atmosphere warming the reactivated air, and on the inner surface of the fitting input of cleaned air, made in the form of a tapering nozzle, are curved groove with a profile in the form of a dovetail, and its inlet is made of a circular groove, combined with a device for removing contaminants, with a circular groove is connected with the curved grooves and with a grid, wherein the adsorbers provided with a thermoelectric generator, comprising a passage for the reactivated and a passage for the drying of compressed air, in which are respectively "hot" and "cold" ends of the set of differential thermocouples, and the input port for oshiwambo compressed air is connected to the output of the receiver is its output is pneumatically connected to the inputs of the adsorbers, when this input port for regenerated compressed air is connected to the adsorbers, and its exit through the pipe and control valve connected to the housing of the suction filter in the form of a double-layer shirt.



 

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