SU1584831A1 - Emergency protection system for self-propelled multisupport spriknler - Google Patents

Abstract

The invention relates to agriculture and can be used in self-propelled multi-support sprinkler machines. The purpose of the invention is to increase the reliability of the machine. The system contains position sensors of supports connected to drain valves 3 on carriages, connected in series by a pressure control tube 6, which is connected at one end of the machine to the pressure pipe 20 at the end of the machine, and to the hydraulic valve 7 at the beginning of the machine’s pipeline . The control flow tube 6 is connected to the deaerator 24, on which the plunger 25 is installed. The deaerator 24 is connected to the hydraulic valve 7 of the control of the locking member 1 and, via a non-return valve 26, to the pressure pipe of the machine. The volume of the deaerator 24 exceeds the total volume of the internal cavities of the pressure tube 6 and the drain valves 3. The supply pipe for the hydraulic drive of the last carriage is equipped with a valve 4 with a diaphragm actuator, the control cavity of which is connected to the pressure tube 6 of the control. The inlet of the diaphragm actuator of the valve 4 is made ejected. The system prevents damage to the machine by ensuring that air is removed from the pressure tube 6 of the control, allowing an automated start-up of the machine without maintenance personnel. 3 il.

Description

The invention relates to agriculture and can be used in self-propelled multi-support sprinkler machines.

The purpose of the invention is to increase the reliability of the machine.

Fig. 1 is a schematic diagram of an emergency protection system; Fig. 2 shows the position of elements of a normally closed valve with a diaphragm actuator during trouble-free operation of the machine; fig. 3 - the same, when a failure occurs in the operation of the machine (when an emergency protection system is triggered).

The emergency protection system consists of a shut-off element 1, a control unit 2, drain valves 3 installed on each trolley, a spring-loaded valve 4 with a diaphragm actuator installed on the water supply pipe to the hydraulic actuator 5 pos-; the last carriage, hydraulically connected to each other by a pressure tube 6 of the control.

The control unit 2 includes an electro-relay 7 and a hydro-relay 8. A valve with membrane drive consists of a locking mechanism with a housing 9, a plate 10, a spring 11, a stem 12 and a seal 13, as well as a membrane 14, a cover 15 with an input 16, output 17 and ejected 18 holes.

The emergency protection system is powered by water from the drain 19 in the end part of the pipeline 20 of the machine with a filter 21 (figure 1).

The rod 22 of the position sensor is mounted with the possibility of the action of the stops 23 on the stem of the drain valve 3, in common with the pressure tube 6 of the control with the atmosphere.

A deaerator 24 with a plunger 25 is installed on the control pressure tube 6 (in its gap between the drain valve 3 of the first carriage and the hydraulic relay 8). The internal volume of the deaerator 24 exceeds the total volume of the internal cavities of the pressure control tube 6 and the drain valves 3. The deaerator 24 communicates with pipe 20 of the machine through the check valve 26.

The protection system works as follows.

With the valve closed 1 (machine stopped), the pipeline 20 of the machine is emptied. Check valve 26

open, deaerator 24 is emptied, bathroom 25 is open. The filling of the pressure tube 6 of the control may be very different depending on the terrain of the area on which the machine is located. The amount of air in the control tube 6 of the control depends on this.

The start-up of the machine is carried out by applying a control action to the control unit 2. In this case, the electro-relay 7 is switched to the opening of the closure member 1, the pipeline 20 of the machine is filled with water. The check valve 26 is closed by separating the deaerator 24 with the pipe 20 of the machine. In the process of increasing the pressure in the pipeline 20 of the machine from the drain 19, located at its end

parts, into the control tube 6 of the control, air inevitably first flows. Only after filling up the stand 19 with liquid the latter enters the pressure tube 6. From the pressure tube 6 of the control, the air-air mixture enters the deaerator 24, the air is removed through the open plunger 25. Since the internal volume of the deaerator 24 exceeds the total volume of the internal cavities of the control pressure tube 6 and the drain valves 3, there is a complete guarantee of filling the pressure tube 6 for controlling the fluid without the inclusion of air masses, i.e. from the moment the liquid is filled with the stand 19. Once the deaerator 24 is filled with water, the plunger 25 closes. The pressure in the pressure tube 6 of the control rises to the normal value, the control action of the control unit 2 is removed. The membrane 14 of the valve 4 with a diaphragm actuator, acting on the rod 12, overcomes the force of the spring 11. The plate 10 opens the flow area. The pressure of the water entering the hydraulic drive 5 of the last carriage ensures the movement of the machine. The system of hydraulic protection is included in the work in automatic mode.

In the normal position of the pipeline 20 of the machine during its operation, the drain valves 3 are closed.

In case of accidental distortion of the pipeline due to a runaway or lagging of any of the carriages, the rod 22 of the mechanism for synchronizing the movement of carriages is moved backward or forward and the stops 23 open

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Claims (1)

Claim Emergency protection system for a self-propelled multi-support sprinkler, including support position sensors connected to the drain valve 1584831: ⁶ mi on trolleys, communicated via a pressure control pipe with a pressure pipe at the end of the machine, valve control valves at the beginning of the machine pipe, power line for the hydraulic drive of the last truck, connected to the pressure pipe at the end of the machine, and a spring-loaded valve with a diaphragm. a drive, a working one, the cavity of which is connected to the riser at the end of the pipeline and the hydraulic drive of the last bogie, the control cavity of the membrane valve drive in communication with the pressure pipe control, and the end of the pipe of the machine is separated from the control tube and the control cavity of the membrane drive valve, the plate of which is made in the form an additional membrane with a throttling hole located outside the diameter of the valve seat, characterized in that, in order to increase the reliability of the machine, the system is equipped with a deaerator with a plunger installed on it and a check valve, while the deaerator is connected on one side to the valve control valve at the beginning of the machine pipe, on the other hand, to the control pressure pipe and through the check valve to the pressure pipe of the machine, while the volume of the deaerator exceeds the total volume internal cavities of the pressure head control tube and drain valves, and the control cavity of the diaphragm actuator of the spring-loaded valve is connected to the pressure head pipe by means of an ejector. Figure 1 Fig.Z