CN109185143A - The control device of multiaxis multi-stage gear assembly type compressor seal gas - Google Patents
The control device of multiaxis multi-stage gear assembly type compressor seal gas Download PDFInfo
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- CN109185143A CN109185143A CN201811205108.9A CN201811205108A CN109185143A CN 109185143 A CN109185143 A CN 109185143A CN 201811205108 A CN201811205108 A CN 201811205108A CN 109185143 A CN109185143 A CN 109185143A
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- gas source
- regulating valve
- source interface
- valve
- gas
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- 230000001105 regulatory effect Effects 0.000 claims abstract description 91
- 238000007789 sealing Methods 0.000 claims abstract description 54
- 238000001514 detection method Methods 0.000 claims abstract description 44
- 230000001276 controlling effect Effects 0.000 claims description 7
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000012535 impurity Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000011897 real-time detection Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
Abstract
The invention discloses a kind of control devices of multiaxis multi-stage gear assembly type compressor seal gas, are related to Compressor Technology field, and main purpose is to make property of sealing piece that can adapt to working conditions of compressor variation in time, and avoid that maloperation occurs.Main technical schemes of the invention are as follows: the device includes the first gas source interface, the second gas source interface, the first regulating valve, detection unit and control unit；First gas source interface and the second gas source interface are respectively used to connect corresponding gas source, and the first gas source interface and the second gas source interface it is parallel with one another after be connected to the test side of detection unit；The test side of detection unit is connected to the arrival end of the first regulating valve, and detection unit is connect for the pressure value in detection control apparatus, the first regulating valve with control unit, and the outlet end of the first regulating valve with sealing element for being connected to；Control unit is used for the pressure value fed back according to detection unit, controls the opening size of the first regulating valve.Present invention is mainly used for provide blanket gas for compressor.
Description
Technical field
The present invention relates to Compressor Technology fields, compress secret in particular to a kind of multiaxis multi-stage gear assembly type
Seal the control device of gas.
Background technique
Centrifugal compressor improves its pressure for conveying air, various process gas or mixed gas, is widely used
In the process flows such as space division.
It is provided with sealing between the rotor and stator of compressor, in order to guarantee the performance and safety of sealing, is needed to close
Envelope provides controllable blanket gas supply.Currently, the shaft end of compressor carries out between rotor and stator usually using labyrinth seal
Sealing while being provided on pipeline moreover, being connected to labyrinth seal by pipeline using the gas that compressor itself generates
Control valve when needing, must be come to the spot by operator when working conditions of compressor changes and manually adjust control valve to change
Become the pressure and flow of labyrinth seal gas supply, so that the performance of labyrinth seal is adapted to the operating condition variation of compressor.
However, the speed manually adjusted is slower, prevent the performance of sealing element from adapting to the operating condition of compressor in time
Variation, and maloperation easily occurs when manually adjusting, it can not work normally so as to cause compressor.
Summary of the invention
In view of this, the embodiment of the present invention provides a kind of control dress of multiaxis multi-stage gear assembly type compressor seal gas
Set, main purpose be so that the performance of sealing element can adapt in time compressor operating condition variation, and avoid occur maloperation, thus
So that compressor can work normally.
In order to achieve the above objectives, present invention generally provides following technical solutions:
The embodiment of the invention provides a kind of control devices of multiaxis multi-stage gear assembly type compressor seal gas, comprising:
First gas source interface, the second gas source interface, the first regulating valve, detection unit and control unit；
First gas source interface and the second gas source interface are respectively used to connect corresponding gas source, and first gas source interface
It is connected to after parallel with one another with the second gas source interface with the test side of the detection unit；
The test side of the detection unit is connected to the arrival end of first regulating valve, and the detection unit is for detecting
Pressure value in the control device, first regulating valve are connect with described control unit, and first regulating valve go out
Mouth end with sealing element for being connected to；
Described control unit is used to receive the pressure value of the detection unit feedback, and judges when the pressure value is greater than pre-
If when pressure value, the aperture for controlling first regulating valve increases, when the pressure value is less than the preset pressure value, control
The aperture of first regulating valve reduces.
Further, the control device of the multiaxis multi-stage gear assembly type compressor seal gas further includes the second regulating valve；
First gas source interface is in parallel with second gas source interface after connecting with second regulating valve；
Second regulating valve is self-contained pressure regulator.
Further, the control device of the multiaxis multi-stage gear assembly type compressor seal gas further include:
Filter, the filter are series between first gas source interface and second regulating valve.
Further, the control device of the multiaxis multi-stage gear assembly type compressor seal gas further include first check-valve and
Second check-valve；
First gas source interface connect with second regulating valve and the first check-valve after with second gas source
Interface is in parallel；
Second gas source interface is in parallel with first gas source interface after connecting with the second check-valve.
Further, the control device of the multiaxis multi-stage gear assembly type compressor seal gas further includes third regulating valve；
Pass through the third regulating valve and the detection after first gas source interface and the second gas source interface are parallel with one another
The test side of unit is connected to；
The third regulating valve is self-contained pressure regulator.
Further, the control device of the multiaxis multi-stage gear assembly type compressor seal gas further include the first shut-off valve,
Second shut-off valve, the 4th regulating valve and alarm unit；
First shut-off valve, the third regulating valve and second shut-off valve are adjusted after being serially connected with the described 4th
Valve is in parallel；
The alarm unit is connect with described control unit.
Further, the compressor has i grades of sealing elements, wherein i takes 1 arbitrary integer into (n-1)；
The communicating downstream of the detection unit has multiple pipelines parallel with one another, multiple pipelines be respectively used to it is described
The i grade sealing element of compressor corresponds connection, wherein multiple pipelines include the first pipeline, the second pipeline and third pipe
Road；
First pipeline with the 1st grade of sealing element of the compressor for being connected to；
Second pipeline includes the first noumenon and the first bye-pass for being connected to the first noumenon, the first noumenon
It is successively respectively used to be connected to (n-1) the grade sealing element of the compressor and n-th grade of sealing element with first bye-pass；
The third pipeline includes the second ontology and the second bye-pass for being connected to second ontology, second ontology
It is successively respectively used to connect with (n-3) the grade sealing element of the compressor and (n-2) grade sealing element with second bye-pass
It is logical；
The quantity of first regulating valve is two, and is connect with described control unit, two first regulating valves
It is successively separately positioned on first bye-pass and second bye-pass.
Further, third is respectively arranged on all pipelines in multiple pipelines in addition to first pipeline to stop
Valve is returned, and the third check-valves on second pipeline and the third pipeline is located at the upper of corresponding first regulating valve
Trip.
By above-mentioned technical proposal, the present invention is at least had the advantages that
The control device of multiaxis multi-stage gear assembly type compressor seal gas provided in an embodiment of the present invention, passes through the first gas
The setting of source interface, the second gas source interface, the first regulating valve, detection unit and control unit so that with the first gas source interface and
The gas source of second gas source interface connection can provide gas to sealing element by the first regulating valve, meanwhile, detection unit can be examined
The pressure value surveyed in device is simultaneously sent to control unit in real time, is greater than default press when control unit receives the pressure value in device
When force value, then the aperture for automatically controlling the first regulating valve increases, to reduce pressure in device, when the device that control unit receives
When interior pressure value is less than preset pressure value, then the aperture for automatically controlling the first regulating valve reduces, with pressure in aggrandizement apparatus, with
Guarantee that the device is the operating condition variation that the gas that sealing element provides can make sealing element adapt to compressor in time, moreover, keeping away
Exempt from the maloperation that artificial adjusting is also easy to produce, ensure that the normal work of compressor.In addition, technology provided in an embodiment of the present invention
Scheme can be used as by the first gas source interface of setting and the second gas source interface to be separately connected two gas sources, a gas source
Driving gas source, another can be used as conventional operation gas source, the i.e. gas source of compressor itself generation, realizes and just opened in compressor
Che Shi is sealing element gas supply by driving gas source, it is therefore prevented that the oil or oil gas of position of bearings are inhaled into inside compresser cylinder, are caused
The damage of components downstream；When compressor operates normally, driving gas source can be cut off, uses conventional operation gas source for sealing element confession
Gas further ensures the normal work of compressor.
Detailed description of the invention
Fig. 1 is a kind of control device of multiaxis multi-stage gear assembly type compressor seal gas provided in an embodiment of the present invention
Schematic diagram；
Fig. 2 is the knot for the control device that the present invention applies a kind of multiaxis multi-stage gear assembly type compressor seal gas that example provides
Structure schematic diagram.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the preferred embodiment of the present invention
In attached drawing, technical solution in the embodiment of the present invention is further described in more detail.In the accompanying drawings, identical from beginning to end or
Similar label indicates same or similar element or element with the same or similar functions.Described embodiment is this hair
Bright a part of the embodiment, instead of all the embodiments.The embodiments described below with reference to the accompanying drawings are exemplary, it is intended to
It is used to explain the present invention, and is not considered as limiting the invention.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
The embodiment of the present invention is described in detail with reference to the accompanying drawing.
In the description of the present embodiment, it is to be understood that term " center ", " longitudinal direction ", " transverse direction ", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown is merely for convenience of description the present embodiment and simplifies description, rather than indication or suggestion meaning
Device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to the present embodiment
The limitation of protection scope.
As shown in Figure 1, the embodiment of the invention provides a kind of controls of multiaxis multi-stage gear assembly type compressor seal gas
Device, including the first gas source interface 1, the second gas source interface 2, the first regulating valve 3, detection unit 4 and control unit；Wherein,
One gas source interface 1 and the second gas source interface 2 are respectively used to connect corresponding gas source, and the first gas source interface 1 and the second gas source interface 2
It is connected to after parallel with one another with the test side of detection unit 4；The test side of detection unit 4 is connected to the arrival end of the first regulating valve 3,
Detection unit 4 is connect for the pressure value in detection control apparatus, the first regulating valve 3 with control unit, and the first regulating valve 3
Outlet end with sealing element for being connected to；Control unit is used to receive the pressure value of the feedback of detection unit 4, and judges when pressure value is big
When preset pressure value, the aperture of the first regulating valve 3 of control increases, and when pressure value is less than preset pressure value, control first is adjusted
The aperture for saving valve 3 reduces.
The control device of the multiaxis multi-stage gear assembly type compressor seal gas, can be used on 100,000 space division units,
Blanket gas is provided for the sealing element in 100,000 space division units, can specifically be connect by pipeline between sled with unit.Specifically, first
Gas source interface 1 can be connected to conventional operation gas source, i.e., the gas source that itself is generated when compressor operates normally, the second gas source interface 2
It can be connected to driving gas source, i.e. the used gas source when compressor just drives not generate gas, which can be
The instrument air of factory, moreover, detection unit 4 can be the pressure sensor of detection pressure, control unit can be programmable
Controller is just realized in this way when compressor is just driven, and can open the second gas source interface 2, so that the instrument air of factory
It is supplied for compressor inner seal liner, the pressure value in 4 real-time detection apparatus of detection unit simultaneously feeds back to control unit, single by control
The pressure value that member is fed back according to detection unit 4 controls the aperture of the first regulating valve 3, when the compressor is normally operated, can
It is sealing element gas supply, 4 real-time detection apparatus of detection unit by the gas source that compressor itself generates to cut off the second gas source interface 2
Interior pressure value simultaneously feeds back to control unit, and the pressure value fed back by control unit according to detection unit 4 is to the first regulating valve 3
Aperture is controlled, the work that sealing element can be made to adapt to compressor in time as the gas that sealing element provides to guarantee the device
Condition variation, moreover, avoiding artificially adjusting the maloperation being also easy to produce, ensure that the normal work of compressor.In addition, referring to fig. 2, it should
Control device can also include bracket, the first gas source interface 1, the second gas source interface 2, the first regulating valve 3, detection unit 4, control
Unit, and the pipeline of connection all parts can be mounted on the bracket 5 according to certain installation standard, in order to the device
Use.
The control device of multiaxis multi-stage gear assembly type compressor seal gas provided in an embodiment of the present invention, passes through the first gas
The setting of source interface, the second gas source interface, the first regulating valve, detection unit and control unit so that with the first gas source interface and
The gas source of second gas source interface connection can provide gas to sealing element by the first regulating valve, meanwhile, detection unit can be examined
The pressure value surveyed in device is simultaneously sent to control unit in real time, is greater than default press when control unit receives the pressure value in device
When force value, then the aperture for automatically controlling the first regulating valve increases, to reduce pressure in device, when the device that control unit receives
When interior pressure value is less than preset pressure value, then the aperture for automatically controlling the first regulating valve reduces, with pressure in aggrandizement apparatus, with
Guarantee that the device is the operating condition variation that the gas that sealing element provides can make sealing element adapt to compressor in time, wherein pre-
If pressure value can work normally required pressure value by the device for guarantee；Moreover, avoiding the mistake behaviour for artificially adjusting and being also easy to produce
Make, ensure that the normal work of compressor.In addition, technical solution provided in an embodiment of the present invention, is connect by the way that the first gas source is arranged
Mouth and the second gas source interface can be used as driving gas source to be separately connected two gas sources, a gas source, another can be used as
The gas source that conventional operation gas source, i.e. compressor itself generate, realizes when compressor is just driven, and is sealing element by driving gas source
Gas supply, it is therefore prevented that the oil or oil gas of position of bearings are inhaled into inside compresser cylinder, cause the damage of components downstream；In compressor
When normal operation, driving gas source can be cut off, uses conventional operation gas source for sealing element gas supply, further ensures compressor
It works normally.
Since the gas pressure that compressor itself generates changes with the variation of working conditions of compressor, so as to cause entering the
The gas pressure of one gas source interface 1 is unstable, is unfavorable for the normal gas supply of the device, in order to solve this problem, referring to Fig. 1,
In an optional embodiment, the control device of the multiaxis multi-stage gear assembly type compressor seal gas can also include the second tune
Save valve 6；First gas source interface 1 is in parallel with the second gas source interface 2 after connecting with the second regulating valve 6；Second regulating valve 6 can be for certainly
Power formula pressure-regulating valve.By being connected one second regulating valve 6 on the branch road of the first gas source interface 1 by pipeline, and the valve is
Self-contained pressure regulator makes it possible to the opening size that spool is automatically controlled according to downstream pressure, when pressure downstream compared with
Gao Shi, spool aperture reduces automatically, and when pressure is smaller downstream, spool aperture is automatically increased, to ensure that under it
The stability of pressure is swum, is the normal gas supply of sealing element convenient for the device, and structure is simple, using more convenient.
There may be impurity for the gas generated due to compressor itself, easily lead to device blocking, are being unfavorable for the device just
Often gas supply, in order to solve this problem, referring to Fig. 1, in an optional embodiment, the multiaxis multi-stage gear assembly type compressor
The control device of blanket gas can also include filter 7, the filter 7 be series at the first gas source interface 1 and the second regulating valve 6 it
Between, so that filter 7 can be filtered out from the impurity in the presence of the gas that the first gas source interface 1 enters, it ensure that first
There is no impurity in the pipeline in 1 downstream of gas source interface, avoid device and block, and are the normal of sealing element convenient for the device
Gas supply, using more convenient.Wherein, there are many structure types of filter 7, as long as may be implemented to be connected on the first gas by pipeline
Between source interface 1 and the second regulating valve 6, and energy filtered compressed machine itself generates the intracorporal impurity of gas, herein without limitation.
Further, referring to Fig. 1, in an optional embodiment, the multiaxis multi-stage gear assembly type compressor seal gas
Control device can also include first check-valve 8 and second check-valve 9；First gas source interface 1 and the second regulating valve 6 and first
Check-valves 8 is in parallel with the second gas source interface 2 after connecting；Second gas source interface 2 connects after connecting with second check-valve 9 with the first gas source
Mouth 1 is in parallel.When compressor is just driven, its own does not generate gas source, the instrument air being connected at this time by the second gas source interface 2
Gas is provided into device, first check-valve 8 is opened, and instrument air is entered in device by first check-valve 8, second check-valve
9 close, it is therefore prevented that instrument air enters the first gas source interface 1 by second check-valve 9, avoids making the normal work of compressor
At influence；When compressor operates normally, its own generates gas source, since the gas pressure that compressor itself generates is greater than instrument
The pressure of table air, therefore, second check-valve 9 are opened, and first check-valve 8 is closed, and compressor conventional operation gas source passes through
Second check-valve 9 enters in device, without entering the second gas source interface 2, it is therefore prevented that the high-pressure air source of compressor operation is to instrument
The normal work of table air impacts, and also just realizes when compressor is just driven and operated normally, by the second gas source interface 2
Automatically switch to supply into device with the first gas source interface 1, using more convenient.
Further, referring to Fig. 1, in an optional embodiment, the multiaxis multi-stage gear assembly type compressor seal gas
Control device can also include third regulating valve 10；By the after first gas source interface 1 and the second gas source interface 2 are parallel with one another
Three regulating valves 10 are connected to the test side of detection unit 4；Third regulating valve 10 can be self-contained pressure regulator.By
It connects between the test side of the sys node and detection unit 4 of one gas source interface 1 and the second gas source interface 2 a third regulating valve
10, and the valve is self-contained pressure regulator, the opening size that spool is automatically controlled according to downstream pressure is made it possible to, when it
When downstream pressure is higher, spool aperture reduces automatically, and when pressure is smaller downstream, spool aperture is automatically increased, thus
The stability of pressure downstream is further ensured, is further the normal gas supply of sealing element convenient for the device, and structure is simple
It is single, using more convenient.
Further, referring to Fig. 1, in an optional embodiment, the multiaxis multi-stage gear assembly type compressor seal gas
Control device can also include the first shut-off valve 11, the second shut-off valve 12, the 4th regulating valve 13 and alarm unit；First cut-off
Valve 11, third regulating valve 10 and the second shut-off valve 12 are in parallel with the 4th regulating valve 13 after being serially connected；Alarm unit and control are single
Member connection.It is larger that the pressure value generation for judging that detection unit 4 is fed back when control unit may be implemented in such structure design
When variation, i.e., alarm unit alert can be controlled, prompt the failed failure of operator's third regulating valve 10, at this point,
Operator can reach rapidly scene and close the first shut-off valve 11 and the second shut-off valve 12, and adjust the 4th regulating valve 13, with
It is worked normally so that the 4th regulating valve 13 can replace third regulating valve 10, then the third regulating valve 10 of failure is carried out
Maintenance or replacement after maintenance, are closing the 4th regulating valve 13, are opening the first shut-off valve 11 and the second shut-off valve 12.
Certainly, the first shut-off valve 11, the second shut-off valve 12 and the 4th regulating valve 13 can be respectively the control valve connecting with control unit,
When the pressure value that control unit judges that detection unit 4 is fed back varies widely, i.e., it can control alarm unit and issue report
Alert information controls the first shut-off valve 11 and the second shut-off valve 12 is closed, the aperture for controlling the 4th regulating valve 13 is big at the same time
It is small, to guarantee the normal work of the device.Wherein, alarm unit, which can be controlled for any type by control unit, issues alarm signal
The device of breath, for example, buzzer or indicator light etc..
Further, referring to Fig. 1, in an optional embodiment, compressor can have i grades of sealing elements, wherein i takes 1
Arbitrary integer into (n-1)；The communicating downstream of detection unit 4 has multiple pipelines parallel with one another, and multiple pipelines are respectively used to
It is connected to the i of compressor grade sealing element one-to-one correspondence, wherein multiple pipelines include the first pipeline 14, the second pipeline and third pipe
Road；First pipeline 14 with the 1st grade of sealing element of compressor for being connected to；Second pipeline includes the first noumenon 15 and and the first noumenon
First bye-pass 16 of 15 connections, the first noumenon 15 and the first bye-pass 16 are successively respectively used to (n-1) grade with compressor
Sealing element and n-th grade of sealing element connection；Third pipeline includes the second ontology 17 and the second bye-pass for being connected to the second ontology 17
18, the second ontology 17 and the second bye-pass 18 are successively respectively used to close with (n-3) the grade sealing element and (n-2) grade of compressor
Sealing connection；The quantity of first regulating valve 3 is two, and is connect with control unit, and two the first regulating valves 3 are successively set respectively
It sets on the first bye-pass 16 and the second bye-pass 18.By the way that the branch pipe communicated therewith is arranged on the second pipeline and third pipeline
To correspond the sealing element for being connected to corresponding series, rather than multiple parallel pipelines identical with sealing element series are arranged in road,
Moreover, being arranged the first regulating valve 3 on bye-pass, rather than the first regulating valve 3 is respectively provided on each pipeline, it is single by control
The opening size of the first regulating valve 3 on member control bye-pass, realizes the adjusting of all pipeline inner pressures, i.e., when control unit is sentenced
When the pressure value that detection unit 4 is fed back disconnected out is greater than preset pressure value, then opening for the first regulating valve 3 on bye-pass is automatically controlled
Degree increases, to reduce pressure in device, when the pressure value in the device that control unit receives is less than preset pressure value, then certainly
The aperture of the first regulating valve 3 on dynamic control bye-pass reduces, and with pressure in aggrandizement apparatus, ensure that the device mentions for sealing element
The gas of confession can make sealing element adapt to the operating condition variation of compressor in time, also simplify the structure of the device, save
Occupied space reduces costs.
Since compressor is to pressurize step by step, the i-stage of compressor seals the pressure sealed to n-th grade and is gradually increased,
And the leakage of what last sealing is larger, by being arranged the first regulating valve 3 on the first bye-pass 16 and the second bye-pass 18,
And first bye-pass 16 is sealed with the pipeline where the second bye-pass 18 for being connected to n-th grade of sealing and (n-2) grade, and by
Control unit is adjusted, and reduces leakage；Moreover, when the pressure value that control unit receives the feedback of detection unit 4 is zero,
The closing of the first regulating valve 3 need to be controlled, to prevent high pressure gas from flowing backward to the device.
In an optional embodiment, referring to Fig. 1, on all pipelines in multiple pipelines in addition to the first pipeline 14 respectively
It is provided with third check-valves 19, and the third check-valves 19 on the second pipeline and third pipeline is located at corresponding first regulating valve
3 upstream prevents gas reverse flow, to guarantee the normal work of the device.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (8)
1. a kind of control device of multiaxis multi-stage gear assembly type compressor seal gas characterized by comprising
First gas source interface, the second gas source interface, the first regulating valve, detection unit and control unit；
First gas source interface and the second gas source interface are respectively used to connect corresponding gas source, and first gas source interface and
It is connected to after two gas source interfaces are parallel with one another with the test side of the detection unit；
The test side of the detection unit is connected to the arrival end of first regulating valve, and the detection unit is described for detecting
Pressure value in control device, first regulating valve are connect with described control unit, and the outlet end of first regulating valve
For being connected to sealing element；
Described control unit is used to receive the pressure value of the detection unit feedback, and judges to be greater than default pressure when the pressure value
When force value, the aperture for controlling first regulating valve increases, when the pressure value is less than the preset pressure value, described in control
The aperture of first regulating valve reduces.
2. the control device of multiaxis multi-stage gear assembly type compressor seal gas according to claim 1, which is characterized in that
It further include the second regulating valve；
First gas source interface is in parallel with second gas source interface after connecting with second regulating valve；
Second regulating valve is self-contained pressure regulator.
3. the control device of multiaxis multi-stage gear assembly type compressor seal gas according to claim 2, which is characterized in that
Further include:
Filter, the filter are series between first gas source interface and second regulating valve.
4. the control device of multiaxis multi-stage gear assembly type compressor seal gas according to claim 2, which is characterized in that
It further include first check-valve and second check-valve；
First gas source interface connect with second regulating valve and the first check-valve after with second gas source interface
It is in parallel；
Second gas source interface is in parallel with first gas source interface after connecting with the second check-valve.
5. the control device of multiaxis multi-stage gear assembly type compressor seal gas according to claim 1, which is characterized in that
It further include third regulating valve；
Pass through the third regulating valve and the detection unit after first gas source interface and the second gas source interface are parallel with one another
Test side connection；
The third regulating valve is self-contained pressure regulator.
6. the control device of multiaxis multi-stage gear assembly type compressor seal gas according to claim 5, which is characterized in that
It further include the first shut-off valve, the second shut-off valve, the 4th regulating valve and alarm unit；
First shut-off valve, the third regulating valve and second shut-off valve are serially connected rear and the 4th regulating valve simultaneously
Connection；
The alarm unit is connect with described control unit.
7. the control device of multiaxis multi-stage gear assembly type compressor seal gas according to claim 1, which is characterized in that
The compressor has i grades of sealing elements, wherein i takes 1 arbitrary integer into (n-1)；
The communicating downstream of the detection unit has multiple pipelines parallel with one another, and multiple pipelines are respectively used to and the compression
The i grade sealing element of machine corresponds connection, wherein multiple pipelines include the first pipeline, the second pipeline and third pipeline；
First pipeline with the 1st grade of sealing element of the compressor for being connected to；
Second pipeline includes the first noumenon and the first bye-pass for being connected to the first noumenon, the first noumenon and institute
The first bye-pass is stated successively to be respectively used to be connected to (n-1) the grade sealing element of the compressor and n-th grade of sealing element；
The third pipeline includes the second ontology and the second bye-pass for being connected to second ontology, second ontology and institute
The second bye-pass is stated successively to be respectively used to be connected to (n-3) the grade sealing element of the compressor and (n-2) grade sealing element；
The quantity of first regulating valve is two, and is connect with described control unit, and two first regulating valves are successively
It is separately positioned on first bye-pass and second bye-pass.
8. the control device of multiaxis multi-stage gear assembly type compressor seal gas according to claim 7, which is characterized in that
Third check-valves, and described are respectively arranged on all pipelines in multiple pipelines in addition to first pipeline
Third check-valves on two pipelines and the third pipeline is located at the upstream of corresponding first regulating valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811205108.9A CN109185143B (en) | 2018-10-16 | 2018-10-16 | Control device for sealing gas of multi-shaft multi-stage gear assembled compressor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811205108.9A CN109185143B (en) | 2018-10-16 | 2018-10-16 | Control device for sealing gas of multi-shaft multi-stage gear assembled compressor |
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| CN109185143A true CN109185143A (en) | 2019-01-11 |
| CN109185143B CN109185143B (en) | 2021-04-13 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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Address after: 110869 No. 16 A Development Road, Shenyang Economic and Technological Development Zone, Liaoning Province Patentee after: SHENYANG TURBO MACHINERY Co.,Ltd. Patentee after: Shenyang Blower Works Group Corp. Address before: 110869 No. 16 A Development Road, Shenyang Economic and Technological Development Zone, Liaoning Province Patentee before: SHENYANG TURBO MACHINERY Co.,Ltd. Patentee before: SHENYANG BLOWER WORKS Group Corp. |
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