LOCKING DEVICE FOR THE HAND PUMP OF THE HYDRAULIC DRIVE OF SHUT-OFF VALVES

Abstract

This utility model relates to protective devices and locks for hand pumps of hydraulic drives of shut-off valves and can be used on fuel, pulse, and process gas pipelines at compressor stations to prevent unauthorized access and valve relocation. The purpose of the utility model is to lock the hand pump of a hydraulic drive, protect the shut-off valve from unauthorized opening or closing, and improve safety during equipment maintenance. The technical result is achieved by the locking device having a simple design, easy to manufacture, and simple and quick installation on the piston rod of the hand pump of a hydraulic drive of a shut-off valve. It encloses the piston rod and prevents the pump from being used to open or close the shut-off valve.The locking device is secured to the pump rod using a bolt or lock through loops connecting the tube segments, ensuring the reliability and security of the locking device and ensuring safety during repair work on the workshop equipment.

Description

[0001] The utility model relates to protective devices, in particular to locks for hand pumps of hydraulic drives of shut-off valves, and can be used on gas pipelines of fuel, pulse and process gas in compressor station conditions in order to prevent unauthorized access and rearrangement of shut-off valves.

[0002] A pump design is known that contains fixed parts as part of a cylinder body, in which threaded holes are made for fittings with fittings fixed in them for connecting the pump to the pipeline of a pneumatic-hydraulic drive, and ensures the flow of liquid [Patent 123470 RU, IPC F04B 9 / 14. Hydraulic hand pump / Titov A.V.: applicant and patent holder Titov A.V. - No. 2012121491 / 06; declared. 05.24.2012; published. 12.27.2012].

[0003] The disadvantage of the existing design of hand pumps for hydraulic drives of shut-off valves is the lack of the ability to block the pump from unauthorized use and rearrangement of the shut-off valves.

[0004] This drawback significantly complicates the operation of hydraulic drives with these hand pumps in compressor station conditions, does not provide reliable protection against the rearrangement of shut-off valves by the hand pump and puts the life and health of compressor station workers at risk during repairs on the workshop equipment.

[0005] Previously, this drawback was not eliminated in the conditions of a compressor station; there is no information about similar technical solutions in known sources in the field of technology.

[0006] The purpose of the utility model is to block the hand pump of the hydraulic drive, protect the shut-off valves from unauthorized opening or closing and improve safety during repair work on the equipment.

[0007] The technical result is achieved by a simple, easy-to-manufacture locking device that can be quickly and easily installed on the piston rod of a hand pump used to drive a shut-off valve. It encloses the piston rod and prevents the pump from being used to open or close the valve. The locking device is secured to the pump piston rod with a bolt or lock through loops connecting the tube segments, ensuring reliability and security of the locking device and ensuring safety during repair work on the workshop equipment.

[0008] The locking device on the hydraulic drive hand pump shut-off is explained by:

[0009] Fig. 1 - General view of the blocking device on hand pumps of hydraulic drives of shut-off valves;

[0010] Fig. 2 - View A of the locking device;

[0011] Fig. 3 - General view of the hand pump of the hydraulic drive of the shut-off valve.

[0012] Fig. 4 - General view of the hand pump of the hydraulic drive of the shut-off valve with the installed blocking device.

[0013] Figure legend:

[0014] 1 - metal tube;

[0015] 2 - loops;

[0016] 3 - holes;

[0017] 4 - awnings;

[0018] 5 - pump body;

[0019] 6 - hand pump rod;

[0020] 7 - handle.

[0021] The locking device for hand pumps consists of a metal tube 1 with hinges 4 on one end and loops 2 on the other, consisting of two parts (segments). Holes are drilled in the loops 2 for installing the locking device (lock or bolt). Metal tube 1 is selected with an internal diameter slightly larger than the diameter of hand pump rod 6, and the length of the tube corresponds to the length of hand pump rod 6 when handle 7 is in the fully raised position. The metal tube is cut lengthwise, and hinges 2 for installing the locking devices and hinges 4 are welded to the ends of the tube segments.

[0022] The utility model works as follows:

[0023] The locking device is installed on the piston rod of the hand pump 6 of the hydraulic shut-off valve drive. It encircles the piston rod, resting its lower edge against the pump body 5 and its upper edge against the handle body 7. It prevents the pump from being used to adjust the shut-off valve. The locking device is secured to the piston rod with a bolt or lock through the holes 3 of the hinges 2 connecting the tube segments.

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