CN101943165B

CN101943165B - Pneumatic control overflow system for mobile screw compressor

Info

Publication number: CN101943165B
Application number: CN2010102769265A
Authority: CN
Inventors: 陆龙胜; 谢志强; 郁文恺; 赵仪田
Original assignee: Wuxi Compressor Co Ltd
Current assignee: Wuxi Compressor Co Ltd
Priority date: 2010-09-09
Filing date: 2010-09-09
Publication date: 2012-07-04
Anticipated expiration: 2030-09-09
Also published as: CN101943165A

Abstract

The invention provides a pneumatic control overflow system for a mobile screw compressor, which ensures that the deflation amount can meet the requirement when the gas consumption is reduced, so that the rotating speed of a diesel engine and the internal pressure in a unit can quickly tend to be stable, the state of a safety valve can be stable, and the stable of the compressor can be stable. The system comprises a gas inlet controller, a stabilizing regulator, a speed regulator of the diesel engine and an oil-gas separator, and is characterized by comprising an overflow valve and a joint body, wherein the overflow valve comprises a piston cavity and a valve plug cavity; the oil-gas separator is connected with a gas inlet of the gas inlet controller; the stabilizing regulator is arranged from the gas inlet to the gas outlet of the gas inlet controller; the gas outlet is provided with the joint body; one path of the joint body is led to the speed regulator of the diesel engine, and the other path of the joint body is led to the inlet of the piston cavity of the overflow valve; the oil-gas separator is connected with the inlet of the valve plug cavity of the overflow valve; and the outlet of the valve plug cavity is communicated with a gas suction cavity of the gas inlet controller.

Description

The gas control overflow system of movable screw compressor

Technical field

The present invention relates to the gas circuit structure technical field of movable screw compressor, be specially the gas control overflow system of movable screw compressor.

Background technique

The control system of existing movable screw compressor is made up of air inlet controller, voltage regulation adjustor, diesel engine speed regulator etc.; It couples together them by certain way through pipeline, according to the size of how much controlling air inlet controller valve opening of gas consumption and the height of diesel engine speed.Because air inlet controller, diesel engine speed regulator speed of response are limited, when gas consumption diminished, the unit internal pressure rose rapidly; But air inlet controller, diesel engine speed regulator are not also adjusted the size and the diesel engine speed of air intake valve rapidly; So there is following problem in movable screw compressor: when gas consumption diminished, because the inner throttle orifice discharge quantity of unit is too little, discharge quantity can not meet the demands; Pressure rising safety valve moves easily, causes the compressor state labile.

Summary of the invention

To the problems referred to above, the invention provides the gas control overflow system of movable screw compressor, it makes when gas consumption diminishes; Discharge quantity meets the demands; Trend is stable fast thereby make diesel engine speed, unit internal pressure, and then safety valve is in stable condition, compressor in stable condition.

The gas control overflow system of movable screw compressor; Its technological scheme is such: it comprises air inlet controller, voltage regulation adjustor, diesel engine speed regulator, deaerator; It is characterized in that: it also comprises relief valve, fittings body; Said relief valve comprises piston cavity, spool chamber, and said deaerator connects the suction port of said air inlet controller, and said voltage regulation adjustor is installed between the suction port of said air inlet controller to air outlet; Place, said air outlet is equipped with said fittings body; A road of said fittings body leads to the piston cavity import that said diesel engine speed regulator, another road lead to said relief valve, and said deaerator connects the spool chamber import of said relief valve, and said spool chamber outlet is communicated with the air aspiration cavity of said air inlet controller.

It is further characterized in that: said relief valve specifically comprises valve body, valve gap, valve core case, piston, spool; Cavity between said valve gap and the valve body is said piston cavity; Cavity between said valve body and the said valve core case is said spool chamber; Said piston is positioned at said piston cavity, and the interior edge face of said piston upper-end surface, said valve gap is withstood at the two ends of spring respectively, and said lower part of piston is passed the attachment hole top dress of valve body

In the groove of the upper-end surface of said spool; The bottom conical surface of said spool is aimed at the air outlet hole of said valve core case upper-end surface; The bottom surface of said valve core case has said spool chamber import, and said spool chamber outlet is positioned at the sidewall of said valve body, and said spool chamber outlet is communicated with said spool chamber; The upper-end surface of said piston and the interior edge face of said valve gap leave the gap, and the upper-end surface of said spool and the upper surface of said spool chamber leave the gap.

After adopting structure of the present invention, when gas consumption diminishes, pressurized gas are housed in the deaerator; Relief valve one end connects deaerator, and the other end is connected to the air aspiration cavity of air inlet controller, and the gas after the voltage regulation adjustor action is as relief valve actuating signal source of the gas; When gas consumption diminishes, unit internal pressure moment is risen the voltage regulation adjustor action; Relief valve is with the emptying of unit rising part pressure, and the unit internal pressure is stable gradually, so when gas consumption diminishes; Discharge quantity meets the demands, and trend is stable fast thereby make diesel engine speed, unit internal pressure, and then in stable condition, the compressor of safety valve is in stable condition.

Description of drawings

Fig. 1 is a plan view structural representation of the present invention;

Fig. 2 is the plan view structural representation of relief valve among the present invention.

Embodiment

See Fig. 1, Fig. 2; It comprises air inlet controller 1, voltage regulation adjustor 2, diesel engine speed regulator 3, deaerator 4, relief valve 5, fittings body 6; Relief valve 5 comprises piston cavity 7, spool chamber 8, and deaerator 4 connects the suction port 9 of

air inlet controller

1, and 10 of suction port 9 to the air outlets of air inlet controller 1 are equipped with voltage regulation adjustor 2; 10 places, air outlet are equipped with fittings body 6; A road of fittings body 6 leads to the piston cavity import 11 that diesel engine speed regulator 3, another road lead to relief valve 5, and deaerator 4 connects the spool chamber import 12 of relief valves 5, and spool chamber outlet 13 is communicated with the air aspiration cavity 14 of air inlet controllers 1.

Relief valve 5 specifically comprises valve body 15, valve gap 16, valve core case 17, piston 18, spool 19; Cavity between valve gap 16 and the valve body 15 is a piston cavity 7, and the cavity between valve body 15 and the valve core case 17 is a spool chamber 8, and piston 18 is positioned at piston cavity 7; Spool 19 is positioned at spool chamber 8; The interior edge face of piston 18 upper-end surfaces, valve gap 16 is withstood at the two ends of spring 20 respectively, and the attachment hole 21 that valve body 15 is passed in the bottom of piston 18 is mounted in the upper-end surface groove 22 of spool 19, the bottom of spool 19 upper-end surface grooves 22 and piston 18 radially leave the 0.2mm gap; The bottom conical surface of spool 19 is aimed at the air outlet hole 23 of valve core case 17 upper-end surfaces; The bottom surface of valve core case 17 has spool chamber import 12, and spool chamber outlet 13 is positioned at the sidewall of valve body 15, and spool chamber outlet 13 is communicated with spool chamber 8; The interior edge face of the upper-end surface of piston 18 and valve gap 16 leaves the gap, and the upper surface of the upper-end surface of spool 19 and spool chamber 8 leaves the gap;

YX RunddichtringO 24 is installed between the surface of contact of the sidewall of piston 18 and valve body 15, and the contacting to meet personally of the attachment hole 21 of the bottom of piston 18 and valve body 15 is equipped with O-ring seals 25;

Plug is equipped with pad 26 between the internal surface of spring 20 and valve gap 16.

Valve gap 16 is fastenedly connected through double-screw bolt 27 and valve body 15, valve core case 17 valve body 15 that is threaded.

Its working principle is following: when gas consumption diminishes, in the deaerator 4 pressurized gas are housed, a pressurized gas part flows to the suction port 9 of air inlet controller 1; The pressure of pressurized gas makes voltage regulation adjustor 2 work, and its gas flows to the piston cavity import 11 of diesel engine speed regulator 3, relief valve 5 respectively, makes upwards jack-up of piston 18; In addition, the pressurized gas another part in the deaerator 4 directly flows to the spool chamber import 12 of relief valve 5, because piston 18 is by jack-up; At this moment; The pressure of pressurized gas makes spool chamber import 12, spool chamber outlet 13 be connected smoothly with spool 19 jack-up, and pressurized gas flow to the air aspiration cavity 14 of air inlet controller 1 from spool chamber outlet 13; Thereby relief valve 5 is with the emptying of unit rising part pressure, and the unit internal pressure is stable gradually.

Claims

1. the gas control overflow system of movable screw compressor; It comprises air inlet controller, voltage regulation adjustor, diesel engine speed regulator, deaerator; It is characterized in that: it also comprises relief valve, fittings body; Said relief valve comprises piston cavity, spool chamber, and said deaerator connects the suction port of said air inlet controller, and said voltage regulation adjustor is installed between the suction port of said air inlet controller to air outlet; Place, said air outlet is equipped with said fittings body; A road of said fittings body leads to the piston cavity import that said diesel engine speed regulator, another road lead to said relief valve, and said deaerator connects the spool chamber import of said relief valve, and said spool chamber outlet is communicated with the air aspiration cavity of said air inlet controller; Said relief valve specifically comprises valve body, valve gap, valve core case, piston, spool; Cavity between said valve gap and the valve body is said piston cavity, and the cavity between said valve body and the said valve core case is said spool chamber, and said piston is positioned at said piston cavity; The interior edge face of said piston upper-end surface, said valve gap is withstood at the two ends of spring respectively; The attachment hole that said lower part of piston is passed valve body is mounted in the upper-end surface groove of said spool, and the bottom conical surface of said spool is aimed at the air outlet hole of said valve core case upper-end surface, and the bottom surface of said valve core case has said spool chamber import; Said spool chamber outlet is positioned at the sidewall of said valve body; Said spool chamber outlet is communicated with said spool chamber, and the upper-end surface of said piston and the interior edge face of said valve gap leave the gap, and the upper-end surface of said spool and the upper surface of said spool chamber leave the gap.