CN102192402A

CN102192402A - Spherical tank pressure control system

Info

Publication number: CN102192402A
Application number: CN 201010119084
Authority: CN
Inventors: 裴仁伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-03-06
Filing date: 2010-03-06
Publication date: 2011-09-21

Abstract

The invention discloses a spherical tank pressure control system consisting of a check valve, an adjusting valve and an instrument control system. Through the set of control system, control of pressure of each spherical tank in the spherical tank system is completed, so that a compressor works under low pressure for more time; and meanwhile, high pressure change signals can be transmitted to the compressor when the gas consumption is changed, so that an emptying valve of the compressor can quickly respond, the gas consumption change adapting capability of the compressor is enhanced, and the relieving rate of the compressor is reduced. Therefore, the purposes of saving energy and reducing consumption are fulfilled.

Description

The spherical tank control pressurer system

Technical field

In industrial production, often to use certain pressed gas.

Background technique

The production of industrial gas is continuous, stable processes, and industrial production fluctuates often to the demand of industrial gas.In order to solve this thatch shield, generally be that some middle gas tanks (spherical tank) are set at compressor and on the pipe network between the gas user, its storage pressure should be higher than the required pressure of user.When user's gas consumption during less than the gas flow produced, the gas affluence of production, rich that part of gas just is stored in the gas tank, and simultaneously jar the pressure in raises; When user's gas consumption during greater than the gas flow produced, the gas deficiency of production, not enough that part of gas is just by the gas tank supply, to cover the shortage, and the pressure reduction in simultaneously jar.Therefore, gas tank has played the effect of mending peak load, balanced load.In the production of enterprise, air feed department often belongs to logistics support department, in order to guarantee the gas of using of each relevant departments, often requires air feed department that bigger buffer capacity is arranged.And the ability of spherical tank balanced load is by spherical tank volume and the decision of spherical tank storage pressure, for the buffer capacity that increases spherical tank often adopts two kinds of methods: 1. the volume that increases spherical tank; 2. improve the storage pressure of spherical tank.When adopting the volume that increases spherical tank to increase the buffer capacity of spherical tank, because the increase of spherical tank volume, make that the pressure of pipe network is more stable, when gas consumption fluctuates, the pressure surge amplitude of pipe network is less, and the exhaust pressure of compressor is by the decision of the pressure of pipe network, this has just caused by bypass valve between the compressor atmospheric valve of discharge pressure signal control or compressor stage slow in one's movements, thereby increased the rate of diffusing of compressor, increase energy consumption, also made effective gas supply capacity of a whole set of air supply system descend simultaneously; When adopting the way that increases spherical tank pressure to increase the buffer capacity of spherical tank, because the rising of spherical tank pressure causes Compressor Discharge Pressure to increase, energy consumption of compressor increases.In actual production in order to have bigger buffer capacity, more than two kinds of methods often adopt simultaneously.This has just increased air feed energy consumption and cost greatly.

Summary of the invention

The present invention is the spherical tank control pressurer system that a cover is made up of check valve, modulating valve and blind controller system.Finish control by this cover control system, make compressor have more time under lower pressure, to work the pressure of each spherical tank in the spherical tank system; Simultaneously when gas consumption changes, can pass to compressor, the atmospheric valve of compressor can be made a response fast, strengthen compressor and adapt to the ability that gas consumption changes with pressure change signal greatly; Reduce the rate of diffusing of compressor.Thereby reach energy saving purposes.

Description of drawings

Accompanying drawing of the present invention has been listed several typical Placement figure between the industrial gas spherical tank and the Placement figure after the corresponding transformation.Fig. 1 is first kind of typical Placement figure; Fig. 2 is first kind of improved Placement figure of typical Placement; Fig. 3 is second kind of typical Placement figure; Fig. 4 is second kind of improved Placement figure of typical Placement; Fig. 5 is the third typical Placement figure; Fig. 6 is the improved Placement figure of the third typical Placement.Symbology is as follows among the figure: V1-spherical tank B manual access valve; The manual outlet valve of V2-spherical tank B; V3-spherical tank C manual access valve; The manual outlet valve of V4-spherical tank C; V5-spherical tank A manual access valve; The manual outlet valve of V6-spherical tank A; V7-spherical tank B check valve; V8-spherical tank B outlet pressure automatic regulating valve; V9-spherical tank C check valve; V10-spherical tank C outlet pressure automatic regulating valve; V11-spherical tank A check valve; V12-spherical tank A outlet pressure automatic regulating valve; V13-compressor atmospheric valve; V14-compressor outlet check valve; V15-spherical tank A, B, C outlet pressure automatic regulating valve.

Embodiment

1. (during pressure change, the load of compressor also changes the amplitude that fluctuates according to user's gas consumption, and the Security of compressor, and the axial displacement of compressor and vibration also can change, if pressure surge is too fast, will damage compressor.) determine from existing spherical tank, to select the bigger spherical tank of the required volume of a volume ratio as spherical tank A by the volume that spherical tank A is required again, or newly-increased spherical tank A.Load onto the control corresponding system at spherical tank A then.

2. the spherical tank that selects a volume to be slightly larger than in existing spherical tank or equal spherical tank A is as spherical tank B, or a newly-increased volume is slightly larger than or the spherical tank that equals spherical tank A as spherical tank B.Load onto the control corresponding system at spherical tank B then.

3. because all there is more spherical tank in many units,, can be spherical tank C, load onto the control corresponding system at spherical tank C then remaining spherical tank parallel connection for investment and the maintenance cost that reduces control system.

4. the pressure automatic regulating valve in the A spherical tank control system is adjusted to manual standard-sized sheet, with requiring and the pressure set points of resistance of pipe system sum of user, and modulating valve is set at automatic control as pressure automatic regulating valve in B spherical tank and the C spherical tank control system with atmospheric pressure.When user's gas consumption was sent into the tolerance of spherical tank system greater than compressor, spherical tank A pressure descended, and the pressure of compressor also descends, the compressor atmospheric valve slowly turns down.When A spherical tank pressure was reduced to the pressure set points of B, C spherical tank outlet pressure automatic regulating valve, B, C spherical tank outlet pressure automatic regulating valve were slowly opened, and to user's air feed, made ductwork pressure stable, guaranteed that the user's uses the gas requirement; When user's gas consumption is sent into the tolerance of spherical tank system less than compressor, spherical tank A pressure rises, when pressure is higher than the pressure set points of B, C spherical tank outlet pressure automatic regulating valve, B, C spherical tank outlet pressure automatic regulating valve are slowly closed, when the pressure of A spherical tank continues to rise to when equating with B, C spherical tank, the gas that compressor is sent to the spherical tank system will enter corresponding spherical tank by check valve V7, V9, V11, and all spherical tanks are carried out synchronous boost.

Claims

1. spherical tank control pressurer system, it passes through check valve, pressure automatic regulating valve and corresponding blind controller system link to each other with the spherical tank system according to certain compound mode, its groundwork principle is by the spherical tank control pressurer system spherical tank system partitioning of a big volume to be become the less spherical tank system of several volumes, adjust the pressure set points of each pressure automatic regulating valve, make the external supply gas pressure difference of each spherical tank, the high pressure automatic regulating valve of pressure set points will be opened greatly automatically when the gas consumption with the gas user increases, the spherical tank pressure at its place descends rapidly, thereby the exhaust pressure of gas compressor is reduced rapidly, reduce the compression energy consumption, simultaneously, because the exhaust pressure of compressor descends rapidly, compressor atmospheric valve by discharge pressure signal control also will turn down fast, reduce the rate of diffusing of pressurized gas, thereby reach energy saving purposes.