CN207377783U - The energy-saving control system and Compressor Group of a kind of reciprocating compressor - Google Patents

Abstract

The utility model is related to the energy-saving control system and Compressor Group of a kind of reciprocating compressor, energy-saving control system is used to control the flow of reciprocating compressor；Including cylinder unloading valve, the switching device of the control cylinder off-load threshold switch and the source of the gas for providing for the cylinder unloading valve instrument wind, the cylinder unloading valve is mounted on the intake valve of the reciprocating compressor, the source of the gas is connected by pipeline with the cylinder unloading valve, and the switching device is mounted on the pipeline and controls the switch of the cylinder unloading valve.The utility model on the intake valve of reciprocating compressor by installing cylinder unloading valve, when closing cylinder unloading valve, make reciprocating compressor can be with oepration at full load, when opening cylinder unloading valve, can also production requirement be met by cylinder off-load valve regulating flow, and while flow is reduced, the power consumption of reciprocating compressor is also effectively saved.

Description

The energy-saving control system and Compressor Group of a kind of reciprocating compressor

Technical field

The utility model is related to reciprocating compressor technical fields, and in particular to a kind of Energy Saving Control of reciprocating compressor System and Compressor Group.

Background technology

The production of reciprocating compressor and application with petroleum gas and other gas industries development, The fields such as gaslift, gas injection, gas collection, gas transmission and turbine power generation are widely used.

Generally there are three types of patterns for the flow-rate adjustment mode of reciprocating compressor：Cylinder head clearance adjusting, the effect of cylinder mono-/bis-are adjusted Section and unit flow-rate adjustment valve regulation.

Cylinder head clearance regulative mode can generally adjust 10% or so of unit design flow, and necessary before adjusting every time Unit is closed down, operation is very cumbersome.

Cylinder mono-/bis-effect adjust can generally adjust 50%-60% of unit design flow or so, due to operate not into Line program correlation is chain, and dismounting/installation air valve operation is also relatively complicated, and domestic market does not use this operation side substantially yet Formula.

The valve regulation of unit flow-rate adjustment can generally realize 100% full adjusting of unit design flow, most domestic oil field All using such operation mode, but such operation mode is equivalent to and has done substantial amounts of idle work, can cause the serious wave of the energy Take.

By taking CNOOC East Sea Pinghu platform reciprocating compressor/motor driving as an example.

Unit design flow is 4400 cubes ms/h, and motor power consumption is about 450 kilowatt hours.Platform needs to flow at present Amount about 6600 cubes ms/h, unit can only two run simultaneously, a unit at full capacity 4400 cubes ms/h run, Motor power consumption is about 450 kilowatt hours.Another unit flow-rate adjustment valve regulation makes flow reach 2200 cubic metres of requirement/small When, motor power consumption is similarly 450 kilowatt hours, and unit has done a large amount of idle works, causes the serious waste of electric energy.

Utility model content

Technical problem to be solved in the utility model is in view of the deficiencies of the prior art, to provide a kind of reciprocating compressor Energy-saving control system and Compressor Group.

The technical solution that the utility model solves above-mentioned technical problem is as follows：A kind of Energy Saving Control system of twin compressor System, for controlling the flow of reciprocating compressor；Switching device including cylinder unloading valve, the control cylinder off-load threshold switch With the source of the gas that instrument wind is provided for the cylinder unloading valve, the cylinder unloading valve is mounted on the air inlet of the reciprocating compressor On valve, the source of the gas is connected by pipeline with the cylinder unloading valve, and the switching device is mounted on the pipeline and controls Whether the instrument wind for making the source of the gas is entered in the cylinder unloading valve.

The beneficial effects of the utility model are：The utility model on the intake valve of reciprocating compressor by installing cylinder Unloading valve when closing cylinder unloading valve, makes reciprocating compressor can be with oepration at full load, can also when opening cylinder unloading valve Production requirement is met by cylinder off-load valve regulating flow, and while flow is reduced, also effectively saves reciprocating pressure The power consumption of contracting machine.

Based on the above technical solutions, the utility model can also do following improvement.

Further, set on the reciprocating compressor there are two intake valve, set away from the reciprocating compressor body The cylinder unloading valve is installed on the intake valve put.

Advantageous effect using above-mentioned further scheme is：Pass through one in two intake valves of reciprocating compressor Upper installation cylinder unloading valve, a reciprocating compressor can at least meet the situation of operating mode at full capacity and 1/2 load condition；And Cylinder unloading valve is mounted remotely from an intake valve of reciprocating compressor body setting, makes cylinder unloading valve close to reciprocal The outside of formula compressor is set, and avoids damage piston rod, securely and reliably.

Further, the switching device includes solenoid valve, and the solenoid valve is mounted on the pipeline and controls the pipe The break-make on road.

Advantageous effect using above-mentioned further scheme is：By setting solenoid valve, and using solenoid valve control pipeline Break-make, control mode are more simple and convenient.

Further, the switching device further includes unit allocation disk, and the unit allocation disk passes through conducting wire and the electromagnetism Valve is connected.

Advantageous effect using above-mentioned further scheme is：It, can be directly in unit allocation disk by setting unit allocation disk The switch of upper solenoid operated control valve, and then the break-make of control piper.

Further, display screen and control button are installed on the unit allocation disk.

Advantageous effect using above-mentioned further scheme is：By setting display screen and control button on unit allocation disk, The operating parameter of reciprocating compressor can be shown at any time.

Further, the switching device includes needle valve, and the needle valve is mounted on the pipeline and controls the pipe The break-make on road.

Advantageous effect using above-mentioned further scheme is：By setting needle valve, can source of the gas instrument be controlled by needle valve Table wind, and then control the switch of cylinder unloading valve.

A kind of Compressor Group, including at least two reciprocating compressors being arranged in series and above-mentioned Energy Saving Control system System；The cylinder unloading valve is installed on the intake valve of at least one reciprocating compressor.

The beneficial effects of the utility model are：The Compressor Group of the utility model uses two reciprocating compressors, and Cylinder unloading valve is installed on at least intake valve of a reciprocating compressor, it can be achieved that the fortune at full capacity of reciprocating compressor Row, 1/2 load operation, 1/4 load operation or 3/4 load operation.

Further, the cylinder unloading valve is installed on one of intake valve of each reciprocating compressor.

Description of the drawings

Fig. 1 is the energy-saving control system of the utility model and the installation diagram of reciprocating compressor；

Fig. 2 is the structure diagram of the reciprocating compressor of the prior art；

Fig. 3 is the structure diagram of the reciprocating compressor of the utility model.

In attached drawing, parts list represented by the reference numerals is as follows：

1st, reciprocating compressor；11st, intake valve；12nd, air bleeding valve；2nd, unit allocation disk；3rd, level-one cylinder unloading valve；4th, one Grade solenoid valve；5th, level-one needle valve；6th, secondary cylinder unloading valve；7th, two-stage electromagnetic valve；8th, two level needle valve；9th, pipeline.

Specific embodiment

The principle and feature of the utility model are described below in conjunction with attached drawing, example is served only for explaining this practicality It is new, it is not intended to limit the scope of the utility model.

Embodiment 1

As shown in figures 1 and 3, a kind of energy-saving control system of reciprocating compressor, for controlling reciprocating compressor Flow；Instrument is provided including cylinder unloading valve, the switching device of the control cylinder off-load threshold switch and for the cylinder unloading valve The source of the gas of table wind, the cylinder unloading valve are mounted on the intake valve 11 of the reciprocating compressor 1, and the source of the gas passes through pipeline 9 are connected with the cylinder unloading valve, and the switching device is mounted on the pipeline 9 and controls the instrument wind of the source of the gas to be It is no to enter in the cylinder unloading valve.The present embodiment by the intake valve of reciprocating compressor install cylinder unloading valve, When closing unloading valve, reciprocating compressor is made when opening cylinder unloading valve, can also to pass through cylinder off-load with oepration at full load Valve regulating flow meets production requirement, and while flow is reduced, also effectively saves the power consumption of reciprocating compressor.

As shown in figures 1 and 3, set on the reciprocating compressor 1 of the present embodiment there are two intake valve 11, away from institute It states and the cylinder unloading valve is installed on an intake valve 11 of the cylinder setting of reciprocating compressor 1.By in reciprocating pressure A upper installation cylinder unloading valve in two intake valves of contracting machine, a reciprocating compressor can at least meet operating mode at full capacity With the situation of 1/2 load condition；And cylinder unloading valve is mounted remotely to an air inlet of reciprocating compressor cylinder setting On valve, cylinder unloading valve is made to be set close to the outside of reciprocating compressor, avoid damage piston rod, securely and reliably.

As shown in Figure 1, the switching device of the present embodiment is solenoid valve, the solenoid valve is mounted on the pipeline 9 And control the break-make of the pipeline 9.By setting solenoid valve, and the break-make of solenoid valve control pipeline is used, control mode is simpler It is single convenient.

The switching device of the present embodiment further includes unit allocation disk 2, and the unit allocation disk 2 passes through conducting wire and the electromagnetism Valve is connected.By setting unit allocation disk, can directly on unit allocation disk solenoid operated control valve switch, and then control The break-make of pipeline.

Display screen and control button are installed on the unit allocation disk 2 of the present embodiment.By setting on unit allocation disk Display screen and control button are put, can show the operating parameter of reciprocating compressor at any time.

As shown in Figure 1, the switching device of the present embodiment includes needle valve, the needle valve is mounted on the pipeline 9 It goes up and controls the break-make of the pipeline 9.By setting needle valve, source of the gas instrument wind can be controlled by needle valve, and then controls gas The switch of cylinder unloading valve.

In the present embodiment, solenoid valve and needle valve can be all disposed on reciprocating compressor.For example, can source of the gas with it is past Solenoid valve on the pipeline between twin compressor is not only set, but also needle valve is set, can select to use solenoid valve or pin as needed Type valve is regulated and controled.

Intake valve 11 and two air bleeding valves 12 there are two being set on the cylinder of the reciprocating compressor 1 of the present embodiment, two Intake valve 11 and two air bleeding valves 12 are corresponded and set, and piston often does in cylinder and once moves back and forth, reciprocating compressor Just complete air-breathing twice and the process being vented twice.Intake valve and air bleeding valve are essentially all the unidirectional of gas unidirectional circulation Valve.Intake valve is identical with the operation principle of air bleeding valve, by taking intake valve as an example, if cylinder external pressure is more than the spring force in intake valve And internal cylinder pressure, valve block leave upper valve base, air valve is opened；If cylinder external pressure is less than or equal to the spring force in intake valve During with internal cylinder pressure, valve block is tightly attached on upper valve base, and air valve is closed.As shown in Fig. 2, when cylinder piston moves right, Right side cavity volume tapers into, and pressure increase, when compressing to a certain extent, intake valve is closed, and air bleeding valve is opened, and gas is past External compression.Left side cavity slowly becomes larger at this time, and pressure becomes smaller, and intake valve opens inflation.When cylinder piston is past to be moved left, left side Cavity volume tapers into, pressure increase, when compression to a certain extent when, intake valve is closed, and air bleeding valve is opened, and gas is toward external pressure Contracting.Right side cavity slowly becomes larger at this time, and pressure becomes smaller, and intake valve opens inflation.Cylinder piston often does and once moves back and forth, compression Machine completes air-breathing and the process of exhaust twice.

As shown in figure 3, the present embodiment is mainly on an intake valve 11 in 1 two intake valves 11 of reciprocating compressor One cylinder unloading valve is installed, if it is desired to cylinder single-acting mode, after being filled with instrument wind in cylinder unloading valve, instrument wind pressure The piston of contracting cylinder unloading valve moves together, and intake valve valve block is made to leave upper valve base, and intake valve valve block cannot be moved back, air valve Opening is in forever, it is impossible to play the role of check valve, gas being capable of the free flow in intake valve.Piston is to the right at this time When mobile, the right side cavity of cylinder becomes smaller, and gas directly returns to inlet end from the intake valve of failure, is no longer pass through air bleeding valve, The piston of cylinder, which is often done, once to be moved back and forth, reciprocating compressor can be only done an air-breathing and exhaust and process.If The cylinder for wanting reciprocating compressor carries out action mode, it is necessary to which instrument wind of releasing, makes the piston of cylinder unloading valve in bullet Home position is returned under the action of spring, becomes a normal intake valve, is turned on or off according to gas pressure change, cylinder Piston often does and once moves back and forth, and compressor completes air-breathing and the process being vented twice twice.

Embodiment 2

As shown in Figure 1, a kind of Compressor Group of the present embodiment, including at least two reciprocating compressors being arranged in series 1 and embodiment 1 described in energy-saving control system；It is equipped on the intake valve 11 of at least one reciprocating compressor 1 described Cylinder unloading valve.The Compressor Group of the present embodiment uses two reciprocating compressors 1, and in an at least reciprocating compressor Cylinder unloading valve is installed on 1 intake valve 11, it can be achieved that the oepration at full load of reciprocating compressor, 1/2 load operation, 1/4 negative Lotus runs or 3/4 load operation.

The cylinder unloading valve is installed on one of intake valve 11 of each reciprocating compressor 1.

Specifically as shown in Figure 1, the two reciprocating compressors of the present embodiment are respectively level-one reciprocating compressor and two level Reciprocating compressor sets 3, level-one solenoid valves 4 of a level-one cylinder unloading valve and one on level-one reciprocating compressor Level-one needle valve 5, level-one needle valve 5 is connected by level-one pipeline with the level-one cylinder unloading valve 3, on the level-one pipeline Level-one solenoid valve 4 is installed, the level-one needle valve 5 connects the source of the gas that promising level-one cylinder unloading valve 3 provides instrument wind.Two level One secondary cylinder unloading valve, 6, two-stage electromagnetic valves 7 and a two level needle valve 8, two level pin are set on reciprocating compressor Type valve 8 is connected by two level pipeline with the secondary cylinder unloading valve 6, and the diode road is equipped with two-stage electromagnetic valve 7, The two level needle valve 8 connects the source of the gas that promising secondary cylinder unloading valve 6 provides instrument wind.

By taking the platform reciprocating compressor of the CNOOC East Sea as an example.If 6600~7000 cubic metres of traffic requirement of production/ Hour, general operation is to open two units to run simultaneously, and single unit oepration at full load, motor power consumption is about 450 kilowatts When, another unit controls cylinder unloading valve to open or beaten using needle valve control with solenoid valve primary control circuit signal Open the source of the gas of cylinder unloading valve.That is, be about 6600 cubes ms/h when producing traffic requirement, a unit double acting Operation, firsts and seconds needle valve are closed, and firsts and seconds solenoid valve is closed, and motor power consumption is about 450 kilowatt hours.Another Unit firsts and seconds needle valve is opened, and is passed through instrument air with pressure.Switch key on touch control disk, firsts and seconds electricity Magnet valve is opened, and firsts and seconds cylinder unloading valve is opened, and compressor becomes single-acting pattern from dual mode.Single unit consumes Electricity is about 250 kilowatt hours.

Production traffic requirement is about 7000 cubes ms/h, a unit double acting operation, level-one needle valve 5 and two level Needle valve 8 is closed, and level-one solenoid valve 4 and two-stage electromagnetic valve 7 are closed, and motor power consumption is about 450 kilowatt hours.Another unit one Grade needle valve 5 is opened, and is passed through instrument air with pressure.Switch key on touch control disk, level-one solenoid valve 4 are opened, level-one gas Cylinder unloading valve 3 is opened, and compressor level-one cylinder becomes single-acting pattern, two level needle valve 8, two-stage electromagnetic valve from dual mode 7 and secondary cylinder unloading valve 6 remain off.Single unit power consumption is about 300 kilowatt hours.

Motor power consumption parameter under 1 cylinder difference binding mode of table

Table 1 is power consumption parameter hourly under reciprocating compressor upper cylinder difference binding mode.The reciprocating compression of separate unit For machine due to the difference of type, the power for causing the driving equipments such as motor is different.Under cylinder list double acting operational mode, a unit It is about 150 degree that electricity, which can be saved within one hour, can save the electricity charge daily about more than 3000 yuan, annual just to save cost up to a million, If more units are run simultaneously, the cost saved every year will be more objective.The design service life of compressor set is general Up to 25 years or so.

The present embodiment by Pinghu platform reciprocating compressor main motor test the results show that specific meeting unit Under the precondition of flow, substantial amounts of fund cost can be saved using the reciprocating compressor unit of the present embodiment, avoid the energy Serious waste.

In the description of the utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width Degree ", " thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " suitable The orientation or position relationship of the instructions such as hour hands ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " are based on orientation shown in the drawings Or position relationship, be for only for ease of description the utility model and simplify description rather than instruction or imply signified device or Element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that limit to the utility model System.

In addition, term " first ", " second " are only used for description purpose, and it is not intended that instruction or hint relative importance Or the implicit quantity for indicating indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or Implicitly include at least one this feature.In the description of the utility model, " multiple " are meant that at least two, such as two It is a, three etc., unless otherwise specifically defined.

In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu It is fixed " etc. terms should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integral；Can be Mechanical connection or electrical connection；It can be directly connected, can also be indirectly connected by intermediary, can be two The interaction relationship of connection or two elements inside element, unless otherwise restricted clearly.For the common skill of this field For art personnel, concrete meaning of the above-mentioned term in the utility model can be understood as the case may be.

In the utility model, unless otherwise clearly defined and limited, fisrt feature is "above" or "below" second feature Can be that the first and second features contact directly or the first and second features pass through intermediary mediate contact.Moreover, first is special Sign second feature " on ", " top " and " above " can be fisrt feature directly over second feature or oblique upper or only Represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be with It is fisrt feature immediately below second feature or obliquely downward or is merely representative of fisrt feature level height less than second feature.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term It states and is necessarily directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be with It combines in an appropriate manner in any one or more of the embodiments or examples.In addition, without conflicting with each other, this field Technical staff can by the different embodiments described in this specification or example and different embodiments or exemplary feature into Row combines and combination.

Although the embodiment of the utility model has been shown and described above, it is to be understood that above-described embodiment is Illustratively, it is impossible to be interpreted as the limitation to the utility model, those of ordinary skill in the art are in the scope of the utility model It is interior above-described embodiment to be changed, changed, replaced and modification.

Claims (8)

1. a kind of energy-saving control system of reciprocating compressor, for controlling the flow of reciprocating compressor；It is characterized in that, bag Cylinder unloading valve is included, control the switching device of the cylinder off-load threshold switch and the gas of instrument wind is provided for the cylinder unloading valve Source, the cylinder unloading valve are mounted on the intake valve of the reciprocating compressor, and the source of the gas passes through pipeline and the cylinder Unloading valve is connected, the switching device be mounted on the pipeline and control the source of the gas instrument wind whether enter it is described In cylinder unloading valve.

A kind of 2. energy-saving control system of reciprocating compressor according to claim 1, which is characterized in that the reciprocating pressure It is set on contracting machine there are two intake valve, the gas is installed on the intake valve set away from the reciprocating compressor body Cylinder unloading valve.

A kind of 3. energy-saving control system of reciprocating compressor according to claim 1 or claim 2, which is characterized in that the switch Device includes solenoid valve, and the solenoid valve is mounted on the pipeline and controls the break-make of the pipeline.

A kind of 4. energy-saving control system of reciprocating compressor according to claim 3, which is characterized in that the switching device Unit allocation disk is further included, the unit allocation disk is connected by conducting wire with the solenoid valve.

A kind of 5. energy-saving control system of reciprocating compressor according to claim 4, which is characterized in that the unit allocation Display screen and control button are installed on disk.

6. according to any one of claim 1 to 2,4 to 5 a kind of energy-saving control system of reciprocating compressor, feature exists In the switching device includes needle valve, and the needle valve is mounted on the pipeline and controls the break-make of the pipeline.

7. a kind of Compressor Group, which is characterized in that including at least two reciprocating compressors and the claim 1 being arranged in series To 6 any one of them energy-saving control systems；The cylinder is installed on the intake valve of at least one reciprocating compressor Unloading valve.

A kind of 8. Compressor Group according to claim 7, which is characterized in that wherein the one of each reciprocating compressor The cylinder unloading valve is installed on a intake valve.