CN208579155U - A kind of pressure charging system of gas-steam combined unit - Google Patents
A kind of pressure charging system of gas-steam combined unit Download PDFInfo
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- CN208579155U CN208579155U CN201821216779.0U CN201821216779U CN208579155U CN 208579155 U CN208579155 U CN 208579155U CN 201821216779 U CN201821216779 U CN 201821216779U CN 208579155 U CN208579155 U CN 208579155U
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Abstract
The utility model provides a kind of pressure charging system of gas-steam combined unit, it is characterized by: the pressure charging system of the gas-steam combined unit includes the pressure piping that multiple groups are arranged in parallel, every group of pressure piping is provided with pressure regulation unit and is set to pressure regulation unit downstream, and with the concatenated compress cell of pressure regulation unit；The compress cell includes compressor, and the compressor enters to be disposed with sucking isolating valve and sucking control valve on air pipe, and outlet bleed valve and outlet isolating valve are disposed on the outlet pipe of the compressor；The arrival end of the compressor and outlet end are connected with cooling for reflux pipeline, are provided with reflux cooler and return valve on the cooling for reflux pipeline.The utility model is effectively saved resource so that compressor set is just starting whenever necessary using pressure regulation unit and compressor combination regulative mode.
Description
Technical field
The utility model relates to belong to natural gas boosting equipment technical field, and in particular to a kind of gas-steam combined machine
The pressure charging system of group.
Background technique
In modern society, in order to improve the city appearance environment quality in down town city, traditional coal fired power generation thermal power plant unit
Card is gradually replaced integrated gas-steam combined cycle power plant thermal power plant unit.Gas-steam Combined Cycle power supply unit, combustion engine are
Mitsubishi M701F4 type heavy combustion engine.M701F4 type heavy combustion engine is 4.0MPa to the pressure requirements of entrance natural gas, is mesh
To the highest type of fuel pressure demand in preceding all F grades of gas turbines.Since natural gas upstream network management is related to the limitation of pressure,
Must synchronized construction natural gas compressor be just able to satisfy requirement of the combustion engine to gas pressure.According to engineering design condition, compression
Machine is needed the natural gas boosting of 2.5MPa-3.6MPa to the pressure for meeting combustion engine demand, this just makes through reasonable controlling party
Formula reduces compressor and runs effect as important subject.
Utility model content
In view of this, the present invention provides a kind of pressure charging systems of gas-steam combined unit, effectively reduce compressor
Run effect.
The utility model provides a kind of pressure charging system of gas-steam combined unit, it is characterised in that: the combustion gas-steaming
The pressure charging system of vapour Unit erriger includes the pressure piping that multiple groups are arranged in parallel, every group of pressure piping be provided with pressure regulation unit with
And be set to pressure regulation unit downstream, and with the concatenated compress cell of pressure regulation unit；
The compress cell includes compressor, and entering for the compressor is disposed with sucking isolating valve and suction on air pipe
Enter control valve, outlet bleed valve and outlet isolating valve are disposed on the outlet pipe of the compressor；
The arrival end of the compressor and outlet end are connected with cooling for reflux pipeline, are provided on the cooling for reflux pipeline
Reflux cooler and return valve.
Preferably, nitrogen charging pipeline, the nitrogen blanketing valve are additionally provided between the sucking isolating valve and the sucking control valve
Road is provided with nitrogen fill valve；The external source nitrogen of nitrogen charging pipeline, for realizing the dry gas seals of the compressor.
Preferably, the pressure regulation unit includes a pressure regulation pipeline, and the pressure regulation pipeline enters tracheae with the compress cell
Road connection, the surge pipe road are provided with pressure regulator valve.
Preferably, the discharge chambe of compressor be connected with sealing room, the sealing room include primary seal room, second seal room with
And mixing chamber；
The primary seal room, the second sealing room and mixing chamber are sequentially distributed from left to right, the primary seal room, second close
Labyrinth is provided between envelope room and mixing chamber；
The primary seal room connects the outlet of the compressor, and second sealing room passes through for nitrogen piping connection nitrogen
Source, the mixing chamber connect exhaust pipe；
The primary seal room and the mixing chamber constitute first order sealing, and the second sealing room and the mixing chamber are constituted
Second level sealing.
Preferably, frequency converter, the driving motor company of the frequency converter and the compressor are additionally provided on the compressor
It connects.
The utility model adapts to the various pressure models of gas ductwork using pressure regulation unit and compressor combination regulative mode completely
Enclose, adjusted when ductwork pressure is in 2.5~3.6MPa with compressor based on, pressure regulation unit adjust supplemented by (be merely responsible for pressure oscillation
Amendment) guarantee downstream pressure stablize；When ductwork pressure > 3.6MPa, pressure regulation unit regulating valve is responsible for that pressure is controlled and stablized
In 3.6MPa hereinafter, stablizing compressor guarantee of run steady downstream pressure；When ductwork pressure is increased to combustion engine safe operation
When condition, by the control of compressor atmospheric pressure in future about in 4.3MPa, compressor stops spare.The utility model is using tune
Pressure unit is effectively saved resource so that compressor set is just starting whenever necessary with compressor combination regulative mode.
Detailed description of the invention
Fig. 1 is the pressure charging system attachment structure schematic diagram of the gas-steam combined unit of the utility model；
Fig. 2 is every group of pressure piping of the utility model and the attachment structure schematic diagram of pressure regulation pipeline；
Fig. 3 is the performance atlas of the utility model compressor；
Fig. 4 is the stepless frequency control of the control mode of the suction control valve of the utility model, return valve and frequency converter
Range schematic diagram；
Fig. 5 is the control mode stepping frequency control of traditional suction control valve, adjustable vane, return valve and frequency converter
Range schematic diagram；
Fig. 6 is the structural schematic diagram for sealing room.
Specific embodiment
In order to better understand the utility model, the utility model is carried out into one with attached drawing combined with specific embodiments below
The description of step.
As shown in Figure 1, the utility model provides a kind of pressure charging system of gas-steam combined unit, the fuel gas-steam
The pressure charging system of Unit erriger includes the pressure piping 300 that multiple groups are arranged in parallel, and every group of pressure piping 300 is provided with pressure regulation list
Member 200 and is set to 200 downstream of pressure regulation unit, and with the concatenated compress cell 100 of the pressure regulation unit 200.
The regulative mode that the utility model is combined using compress cell and pressure regulation unit, so that this pressure charging system adapts to completely
The various pressure limits of gas ductwork.
Further, as shown in Fig. 2, the compress cell 100 includes compressor 101, the compressor 101 enters tracheae
It is disposed with sucking isolating valve 103 on road 102 and sucks control valve 104, on the outlet pipe 107 of the compress cell 100
It is disposed with outlet bleed valve 108 and outlet isolating valve 109.
Natural gas enters air pipe 102 and enters the compressor 101 described in passing through, by the compressor 101 by natural air lift
Pressure value needed for rising to combustion engine, the effect of the sucking control valve 104 are to adjust the natural gas for entering the compressor 101
Pressure value keeps it in setting value, to guarantee 11 stable operation of compressor.
Further, the arrival end of the compressor 101 and outlet end are connected with cooling for reflux pipeline 110, the cooling
Reflux cooler 114 and return valve 111 are provided on return line 110.When the return valve 111 is opened, part is natural
Gas returns to the inlet of the compressor 101 after passing through the reflux cooler 114, carries out again by the compressor 101
Boosting.
As shown in figure 3, Fig. 3 is the schematic diagram of the performance atlas of the compressor 101.By the performance of the compressor 101
Shown in map, the working region of the compressor 101 is divided into stable and unstable region, surge and appears in unstable region.For
Prevent surge, the compressor 101 of the utility model is equipped with return valve 111.When operating point enters unstable region, i.e., by hair
When raw surge, by opening the return valve 111, the flow of medium in the compressor 101 can be improved, return to operating point
In stability region.For this purpose, on the right side of surge line, it is parallel with surge line to be equipped with a control line.Meanwhile surge line with
One safety line is set between control line.The task of the return valve 111 is that operating point is made to be maintained at stability region.
Further, it is additionally provided with nitrogen charging pipeline 105 between the sucking isolating valve 103 and the sucking control valve 104,
Nitrogen fill valve 106 is provided on the nitrogen charging pipeline 105.
Further, frequency converter, the driving electricity of the frequency converter and the compressor are additionally provided on the compressor 101
Machine connection.
The compress cell 100 first has to carry out nitrogen charging to system before work, so that the dry gas to the compressor is close
Envelope system is for nitrogen.
During nitrogen charging, the inlet isolation valve 103, the outlet bleed valve 108 and the outlet isolating valve 109 are equal
It is in close state, the nitrogen fill valve 106, the inlet control valve 104 and the return valve 111 are in the open state.
It is the pressure that there is certain volume flow and the source nitrogen of pressure to pass through the nitrogen charging pipeline 105 during nitrogen charging
Contracting machine 101 is carried out for nitrogen.
It needs to pressurize to system with fuel gas after nitrogen charging.In this process, the outlet bleed valve 108 and outlet
Isolating valve 109 is still within closed state, and the inlet isolation valve 103 and return valve 111 are in the open state, and to close
Close the inlet control valve 104.It is closed in the inlet control valve 104 and then opens its part, fuel gas supplies at leisure
To the increasing compressor 101, when 101 internal pressure of compressor and equal supply gas pressure, the inlet control valve 104 is closed
It closes, while the outlet bleed valve 108 is opened, so that nitrogen/fuel gas gaseous mixture in the compressor 101 goes out described in
Mouth bleed valve 108 is discharged.During discharge, 111 inductive switch of return valve alternately, until the compressor 101
Internal nitrogen gas component is reduced within the scope of permissible value.Then, the outlet bleed valve 108 must shut off, at this point, the compression
Fuel gas is had been filled in machine 101.
Further, need to start the compressor 101, at this point, the inlet isolation valve 103, inlet control valve 104,
Return valve 111 and the outlet isolating valve 109 are in the open state, and the outlet bleed valve 108 is in close state.This process
In, the fuel gas flows to downstream from the compressor 101.
Further, frequency converter, the driving electricity of the frequency converter and the compressor are additionally provided on the compressor 101
Machine connection.Switch the compressor 101 under power frequency and variable mode.
It is tieed up by adjusting the speed of the valve position and driving motor of the return valve 111 and the inlet control valve 104
Hold the pressure value of system.
The utility model realizes the company of compressor using the control mode of suction control valve, return valve and frequency converter
Continuous variable frequency adjustment and Anti-surge Control, extend the operating condition range of compressor, compressor are run according to combustion engine
State selects most matched operating condition, substantially increases compressor to the adaptability of air supply pressure fluctuation, improves simultaneously
The energy-saving effect of compressor.
Fig. 3 and Fig. 4 is the control mode and traditional suction of the suction control valve of the utility model, return valve and frequency converter
Gas control valve, adjustable vane, return valve and frequency converter control mode speed adjustable range comparison diagram.In the utility model, due to
Adjustable vane is no longer set, compressor (figure dash area) is allowed to carry out continuous stepless frequency conversion adjusting.And traditional scheme
In due to adjustable vane presence so that compressor forms many places interval of resonance in frequency converter adjustable extent, to avoid sending out
Raw resonance, compressor can only work under specific several groups of revolving speeds, and power shows the relationship of multiple-rank control with discharge characteristic
Characteristic, thus brings that unit control characteristic is poor, the lower problem of energy-saving effect, as Fig. 4 different products can actually be divided into 5
~8 grades of adjustings differ.
Further, the pressure regulation unit 200 includes a pressure regulation pipeline 201, and the pressure regulation pipeline 201 and the pressurization are single
Member 100 enters the connection of air pipe 102, is provided with pressure regulator valve 202 on the pressure regulation pipeline 201.
The utility model is provided with compress cell 100 and pressure regulation unit 200, using compress cell 100 and pressure regulation unit
200 combination regulation modes adapt to the various pressure limits of gas ductwork completely.When ductwork pressure is in 2.5~3.6MPa to be pressurized
Based on unit 100 is adjusted, supplemented by the adjusting of pressure regulation unit 200, the pressure regulation unit 200 is merely responsible for the amendment of pressure oscillation, to protect
Downstream pressure is demonstrate,proved to stablize；When ductwork pressure > 3.6MPa, the regulating valve of pressure regulation unit 200 is responsible for that pressure is controlled and stablized
3.6MPa is hereinafter, stablize 100 guarantee of run steady downstream pressure of compress cell；It is transported safely when ductwork pressure is increased to combustion engine
When row condition, the compressor stopping is spare, by the second contact pipeline atmospheric pressure in 112 future control about in 4.3MPa.
Further, as shown in figure 5, the discharge chambe 1011 of compressor 101 is connected with sealing room 400, the sealing room 400
Including primary seal room A, the second sealing room E and mixing chamber B；The primary seal room A, second seal room E and mixing chamber B from a left side
It is sequentially distributed to the right side, is provided with labyrinth 401 between the primary seal room A, the second sealing room E and mixing chamber B；The primary seal
Room A connects the outlet of the compressor 101, and the second sealing room E connects source nitrogen by the nitrogen charging pipeline 105, described
Mixing chamber B connection exhaust pipe.The primary seal room A and the mixing chamber B constitute first order sealing, the second sealing room E and
The mixing chamber B constitutes second level sealing.
The compressor 101 of the utility model uses the Series Connection Type Dry Gas with internal labyrinth, and compressor 101 is leaked
Natural gas and ambient atmosphere completely cut off.As shown in figure 5, entering after filtering most from the natural gas that compressor 101 exports
Close to the primary seal room A of discharge chambe 1011.The sealing gas of entrance enters discharge chambe by a labyrinth, only sub-fraction from
Primary seal room A escapes to mixing chamber B.The B in mixing chamber, the air-flow of escape are mixed with the nitrogen for sealing room E from second,
The nitrogen for meeting setting pressure continuously supplies the second sealing room E, and fraction nitrogen can be sealed by the second level and escape into atmosphere
In, most of nitrogen can go to mixing chamber B, be discharged into atmosphere eventually by exhaust pipe by primary seal room.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
Finally, it should be noted that obviously, above-described embodiment is merely examples for clearly illustrating the present invention,
And it does not limit the embodiments.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.And thus
Changes and variations that derived from still in the protection scope of the utility model among.
Claims (5)
1. a kind of pressure charging system of gas-steam combined unit, it is characterised in that: the pressurization of the gas-steam combined unit
System includes the pressure piping that multiple groups are arranged in parallel, and every group of pressure piping is provided with pressure regulation unit and is set to the pressure regulation
Unit downstream, and with the concatenated compress cell of pressure regulation unit；
The compress cell includes compressor, and the compressor enters to be disposed with sucking isolating valve and sucking control on air pipe
Valve processed is disposed with outlet bleed valve and outlet isolating valve on the outlet pipe of the compressor；
The arrival end of the compressor and outlet end are connected with cooling for reflux pipeline, are provided with reflux on the cooling for reflux pipeline
Cooler and return valve.
2. the pressure charging system of gas-steam combined unit according to claim 1, it is characterised in that: the sucking isolation
Nitrogen charging pipeline is additionally provided between valve and the sucking control valve, the nitrogen blanketing valve road is provided with nitrogen fill valve；The nitrogen blanketing valve
The external source nitrogen in road, for realizing the dry gas seals of the compressor.
3. the pressure charging system of gas-steam combined unit according to claim 1 or 2, it is characterised in that: the pressure regulation list
Member includes a pressure regulation pipeline, and the pressure regulation pipeline is connected to the air pipe that enters of the compress cell, and the surge pipe road is arranged
There is pressure regulator valve.
4. the pressure charging system of gas-steam combined unit according to claim 1, it is characterised in that: the compression of compressor
Room is connected with sealing room, and the sealing room includes primary seal room, the second sealing room and mixing chamber；
The primary seal room, the second sealing room and mixing chamber are sequentially distributed from left to right, the primary seal room, the second sealing room
And labyrinth is provided between mixing chamber；
The primary seal room connects the outlet of the compressor, and second sealing room passes through for nitrogen piping connection source nitrogen, institute
State mixing chamber connection exhaust pipe；
The primary seal room and the mixing chamber constitute first order sealing, and the second sealing room and the mixing chamber constitute second
Grade sealing.
5. the pressure charging system of gas-steam combined unit according to claim 1, it is characterised in that: on the compressor
It is additionally provided with frequency converter, the frequency converter is connect with the driving motor of the compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821216779.0U CN208579155U (en) | 2018-07-30 | 2018-07-30 | A kind of pressure charging system of gas-steam combined unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821216779.0U CN208579155U (en) | 2018-07-30 | 2018-07-30 | A kind of pressure charging system of gas-steam combined unit |
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| Publication Number | Publication Date |
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| CN208579155U true CN208579155U (en) | 2019-03-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108679449A (en) * | 2018-07-30 | 2018-10-19 | 天津市津能工程管理有限公司 | A kind of pressure charging system of gas-steam combined unit |
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2018
- 2018-07-30 CN CN201821216779.0U patent/CN208579155U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108679449A (en) * | 2018-07-30 | 2018-10-19 | 天津市津能工程管理有限公司 | A kind of pressure charging system of gas-steam combined unit |
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