CN207893412U - A kind of insulating gas processing unit - Google Patents
A kind of insulating gas processing unit Download PDFInfo
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- CN207893412U CN207893412U CN201820253506.7U CN201820253506U CN207893412U CN 207893412 U CN207893412 U CN 207893412U CN 201820253506 U CN201820253506 U CN 201820253506U CN 207893412 U CN207893412 U CN 207893412U
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- 238000004064 recycling Methods 0.000 claims abstract description 46
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 40
- 230000000087 stabilizing effect Effects 0.000 claims description 13
- 239000003381 stabilizer Substances 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 182
- 238000009413 insulation Methods 0.000 description 48
- 238000011084 recovery Methods 0.000 description 15
- 238000000034 method Methods 0.000 description 14
- 238000010586 diagram Methods 0.000 description 9
- 230000010355 oscillation Effects 0.000 description 6
- 239000012530 fluid Substances 0.000 description 5
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000003434 inspiratory effect Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 229910018503 SF6 Inorganic materials 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000002427 irreversible effect Effects 0.000 description 2
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 2
- 229960000909 sulfur hexafluoride Drugs 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- WRQGPGZATPOHHX-UHFFFAOYSA-N ethyl 2-oxohexanoate Chemical compound CCCCC(=O)C(=O)OCC WRQGPGZATPOHHX-UHFFFAOYSA-N 0.000 description 1
- 238000003682 fluorination reaction Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 231100000004 severe toxicity Toxicity 0.000 description 1
- 238000002207 thermal evaporation Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
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- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
The utility model discloses a kind of insulating gas processing units, are related to insulating gas processing technology field.Organic efficiency is relatively low and invent when for solving the problems, such as that existing insulating gas processing unit recycles insulating gas.The insulating gas processing unit, including the first connector, second connector and recycling branch, it includes the first branch and the second branch to recycle branch, the first branch is connected between the first connector and the second connector, it is equipped with the first control valve successively along being from upstream in the direction first branch in downstream, pressure reducing valve, first compressor and heat exchanger, the second branch includes the branch path of a plurality of parallel connection, one end of a plurality of branch path is connected with the first branch of the first control valve upstream side, the other end is all connected in the first branch between pressure reducing valve and the first compressor, the direction that every branch path upper edge is from upstream to downstream is equipped with the second control valve and vacuum pump successively.The utility model can be used for SF6The processing such as the recycling of equal insulating gas.
Description
Technical field
The utility model is related to insulating gas processing technology field more particularly to a kind of insulating gas processing units.
Background technology
In power industry, the insulating gas of such as sulfur hexafluoride etc is widely used in gas-insulated switch (Gas
Insulated Switchgear abbreviation GIS), gas-insulated transmission of electricity pipeline (Gas Insulated Line abbreviation GIL) etc. electricity
For insulation and arc extinguishing in gas equipment.During electric equipment operation, due to the presence of various factors, insulating gas inevitably can
It decomposes, for example, sulfur hexafluoride (SF6) can decompose under the conditions ofs electric spark, electric discharge etc., the fluorination sulfurous acid of generation and
Hydrofluoric acid, and being fluorinated sulfurous acid and hydrofluoric acid has severe toxicity meeting corroding electrode and insulating materials, is produced to the safe operation of running equipment
Environment that is raw to threaten, and being easy after revealing around pollution.Therefore, it is necessary to periodically be returned to the insulating gas in electrical equipment
The processing such as receipts, inflation, to replace the insulating gas for being unsatisfactory for electrical equipment safe operation.
With domestic high pressure, super-pressure, extra-high voltage power station Large scale construction, GIS, the GIL to match with power plant construction
Etc. volumes of equipment gradually increase, then the amount of the required insulating gas of the equipment such as GIS, GIL is also very huge, to GIS,
When insulating gas in the equipment such as GIL is handled, how to improve treatment effeciency and have become urgent problem to be solved in the industry.
Existing a kind of insulating gas processing unit, as shown in Figure 1, including the first connector 01, the second connector 02 and returning
Revenue and expenditure road 03, recycling branch 03 includes the first branch 031 and the second branch 032, and the first branch 031 is connected to 01 He of the first connector
Between second connector 02, it is equipped with the first control valve 0311, pressure reducing valve successively along being from upstream in the direction first branch 031 in downstream
0312, compressor 0313 and heat exchanger 0314, the first branch of one end of the second branch 032 and 0311 upstream side of the first control valve
031 is connected, and the other end is all connected in the first branch 031 between pressure reducing valve 0312 and compressor 0313, the second branch 032
The direction that upper edge is from upstream to downstream is equipped with the second control valve 0321 and vacuum pump 0322 successively.
As shown in Figure 1, before insulating gas recycling starts, the first connector 01 is connected with the insulation gas chamber of switch, second
Connector 02 is connected with fluid reservoir, and when recycling starts, the second control valve 0321 is closed, and vacuum pump 0322 is closed, the first control valve
0311 opens, and compressor 0313 starts, and insulating gas is after the first control valve 0311, pressure reducing valve 0312, into compressor 0313,
Enter heat exchanger 0314 after the supercharging of compressor 0313 to condense, is eventually converted into liquid and enters in fluid reservoir；When switch gas
After room pressure is less than zero gauge pressure, into negative pressure recovery stage, at this point, the first control valve 0311 is closed, the second control valve 0321
It opens, vacuum pump 0322 is opened, and compressor 0313 is still opened, and ability is recycled by switching gas chamber using the negative pressure of vacuum pump 0322
Interior insulating gas is recycled to the vacuum degree of requirement.
Existing this insulating gas processing unit, after negative pressure recycling starts, with 0322 working time of vacuum pump
Increase, the reduction of the insulation indoor pressure of gas of switch, the capacity of vacuum pump 0322 becomes smaller and smaller, compressor 0313
The gas flow inhaled also becomes smaller and smaller, causes the utilization rate of compressor 0313 very low, and negative pressure recovery stage needs very
It could complete for a long time, in this way, entire removal process then needs the longer time, so that the insulating gas processing unit is not
It disclosure satisfy that the requirement of the insulating gas organic efficiency of the electrical equipment with large capacity insulation gas chamber.
Utility model content
The embodiments of the present invention provide a kind of insulating gas processing unit, for solving existing insulating gas processing
Organic efficiency relatively low problem when device recycles insulating gas.
In order to achieve the above objectives, in a first aspect, the embodiments of the present invention provide a kind of insulating gas processing unit,
Including the first connector, the second connector and recycling branch, the recycling branch includes the first branch and the second branch, and described first
Branch is connected between first connector and second connector, along be from upstream in the first branch described in the direction in downstream according to
Secondary to be equipped with the first control valve, pressure reducing valve, the first compressor and heat exchanger, the second branch includes the branch path of a plurality of parallel connection,
One end of a plurality of branch path is connected with the first branch of first control valve upstream side, and the other end is all connected with
In the first branch between the pressure reducing valve and first compressor, every branch path upper edge is from upstream to down
The direction of trip is equipped with the second control valve and vacuum pump successively.
The insulating gas processing unit that the utility model embodiment provides, since the second branch includes the branch of a plurality of parallel connection
Road, and one end of a plurality of branch path is connected with the first branch of the first control valve upstream side, and the other end is all connected to subtract
In the first branch between pressure valve and the first compressor, every branch path upper edge is from upstream to the direction in downstream and is equipped with the successively
Two control valves and vacuum pump, in this way, in the starting stage of negative pressure recycling, that is, the insulation indoor pressure value of gas is in the first setting
Pressure value p1With the second setup pressure value p2Between when, due to this stage insulation the indoor pressure value of gas recycled in entire negative pressure
Stage is relatively high, therefore, wherein the second control valve, vacuum pump in a branch path can be opened, and it is multiple true to prevent
The irreversible structural destruction of vacuum pump caused by the load of vacuum pump is excessive when sky is pumped while being opened；With insulation gas chamber
The decline of interior pressure value, when the insulation indoor pressure value of gas drops to the second setup pressure value p2When, it insulate in gas chamber at this time
Insulating gas is very thin, and therefore, the second control valve at least one branch path, vacuum pump in other branch paths are just
It can open, to increase the number of vacuum pump work, increase total capacity of vacuum pump, improve the air-breathing of the first compressor
Amount improves the utilization rate of the first compressor, meanwhile, multiple vacuum pumps are evacuated simultaneously can increase the speed of evacuation, shorten negative pressure and return
The time in receipts stage improves the treatment effeciency of insulating gas so as to shorten the total time of entire recovery stage, has greatly to meet
The requirement of the insulating gas organic efficiency of the electrical equipment of capacity insulation gas chamber.
Second aspect, the utility model embodiment provide a kind of insulating gas processing unit as described in first aspect
Control method, including：When recycling starts, the second control valve, vacuum pump in every branch path are turned off, and the first control valve is opened
It opens, the unlatching of the first compressor, so that insulating gas is flowed by the first connector, after the first branch, is flowed out by the second connector；When
The indoor pressure value of insulation gas of electrical equipment drops to the first setup pressure value p1When, negative pressure recycling starts, the first control valve
It closes, wherein the second control valve in a branch path is opened, vacuum pump is opened, so that the insulating gas is from described one point
One end of branch flows into, and is flowed out by the other end of a branch path；When the indoor pressure value of the insulation gas drops to
Second setup pressure value p2When, in removing the branch path except a branch path, second at least one branch path
Control valve, vacuum pump are opened so that the insulating gas from one end of at least one branch path flow into, and by it is described extremely
The other end outflow of a few branch path；Wherein, p2<p1。
The utility model embodiment provide insulating gas processing unit control method it is solved the technical issues of and
Acquired technique effect, it is solved with insulating gas processing unit described in first aspect the technical issues of and it is acquired
Technique effect it is identical, details are not described herein.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, other drawings may also be obtained based on these drawings.
Fig. 1 is a kind of existing loop diagram of insulating gas processing unit；
Fig. 2 is the loop diagram of the insulating gas processing unit in the utility model embodiment；
Fig. 3 recycles the state diagram of early period for the insulating gas processing unit in the utility model embodiment in positive pressure；
Fig. 4 is state diagram of the insulating gas processing unit in the utility model embodiment in positive pressure recycling mid-term；
Fig. 5 is state diagram of the insulating gas processing unit in the utility model embodiment in the positive pressure recycling later stage；
Fig. 6 recycles the state diagram of early period for the insulating gas processing unit in the utility model embodiment in negative pressure；
Fig. 7 is state diagram of the insulating gas processing unit in the utility model embodiment in the negative pressure recycling later stage；
Fig. 8 is state diagram of the insulating gas processing unit in inflation in the utility model embodiment；
Fig. 9 is state diagram of the insulating gas processing unit when vacuumizing in the utility model embodiment.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be understood that term "center", "upper", "lower", "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 describing the present invention and simplifying the description, rather than indicates or imply and is signified
Device or element must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as to this practicality
Novel limitation.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；For the ordinary skill in the art, the tool of above-mentioned term in the present invention can be understood with concrete condition
Body meaning.
Term " first ", " second " are used for description purposes only, be not understood to indicate or imply relative importance or
Implicitly indicate the quantity of indicated technical characteristic." first " is defined as a result, the feature of " second " can be expressed or imply
Ground includes one or more this feature.In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two
It is a or more than two.
According to the height of the insulation gas room pressure of electrical equipment, the removal process of insulating gas is broadly divided into two ranks
Positive pressure recovery stage and negative pressure are recycled rank in the utility model embodiment by section, i.e. positive pressure recovery stage and negative pressure recovery stage
Section is subdivided into the different section of several pressure, and the section is improved by opening different elements in different pressure sections
Speed is recycled, and then shortens the total time of entire removal process.
In a first aspect, the utility model embodiment provides a kind of insulating gas processing unit, as shown in Fig. 2, including the
One connector 1, the second connector 2 and recycling branch 3, recycling branch 3 include the first branch 31 and the second branch 32, the first branch 31
It is connected between the first connector 1 and the second connector 2, the first control is equipped with successively along being from upstream in the direction first branch 31 in downstream
Valve 311, pressure reducing valve 312, the first compressor 313 and heat exchanger 314 processed, the second branch 32 include the branch path (example of a plurality of parallel connection
Branch path 321a and branch path 321b in such as figure), one end of a plurality of branch path with 311 upstream side of the first control valve first
Branch 31 is connected, and the other end is all connected in the first branch 31 between pressure reducing valve 312 and the first compressor 313, every point
The direction that branch upper edge is from upstream to downstream is equipped with the second control valve 3211 and vacuum pump 3212 successively.
It should be noted that：The other end of a plurality of branch path is all connected between pressure reducing valve 312 and the first compressor 313
Can be in the first branch 31：The downstream of a plurality of branch path is directly connected between pressure reducing valve 312 and the first compressor 313
The first branch 31 on, can also be in the first branch 31 being indirectly coupled between pressure reducing valve 312 and the first compressor 313,
Than as shown in Fig. 2, the downstream of branch path 321a and branch path 321b by the first main line 322 be connected to pressure reducing valve 312 with
In the first branch 31 between first compressor 313.
The insulating gas processing unit that the utility model embodiment provides is when recycling beginning, as shown in figure 3, every branch
The second control valve 3211, the vacuum pump 3212 of road are turned off, and the first control valve 311 is opened, the first compressor 313 is opened, this
The indoor insulating gas of insulation gas of sample electrical equipment enters the first compressor after the first control valve 311, pressure reducing valve 312
313, after the supercharging of the first compressor 313, become the gas of high temperature and pressure by low-pressure gas, by the cold of heat exchanger 314
After solidifying heat dissipation, insulating gas is converted into storage in liquid in fluid reservoir；Wherein, before reclamation begins, the insulation of electrical equipment
The indoor pressure value of gas is initial value p0(such as 0.7MPa)；As recovery time increases, the insulation gas of electrical equipment is indoor
Pressure value also constantly reduces, when the indoor pressure value of insulation gas of electrical equipment drops to the first setup pressure value p1(such as
When 0.02MPa), negative pressure recycling starts, at this point, as shown in fig. 6, the first control valve 311 is closed, wherein branch path (such as
Branch path 321a shown in figure) on the second control valve 3211 open, vacuum pump 3212 open, the insulation gas chamber of electrical equipment
Interior insulating gas is extracted out by vacuum pump 3212, by the supercharging of the first compressor 313, after the condensation heat release of heat exchanger 314, into
Enter into fluid reservoir；With continuing for negative pressure recycling, the indoor pressure of insulation gas of electrical equipment continues to decline, and works as insulation
The indoor pressure value of gas drops to the second setup pressure value p2When (such as -0.05MPa), at least one point in other branch paths
The second control valve 3211, the vacuum pump 3212 of branch road are opened；Such as shown in Fig. 7, which is the situation that branch path is two, when
The insulation indoor pressure value of gas drops to the second setup pressure value p2When, the second control valve 3211, vacuum on branch path 321b
Pump 3212 is opened, and the vacuum pump 3212 on such branch path 321a and branch path 321b opens air-breathing simultaneously, until insulation gas
Indoor pressure value drops to the required vacuum pressure value recycled.
The insulating gas processing unit that the utility model embodiment provides, as shown in Fig. 2, since the second branch 32 includes more
The branch path of item parallel connection, and one end of a plurality of branch path is connected with the first branch 31 of 311 upstream side of the first control valve,
The other end is all connected in the first branch 31 between pressure reducing valve 312 and the first compressor 313, and every branch path upper edge is from upstream
It is equipped with the second control valve 3211 and vacuum pump 3212 successively to the direction in downstream, in this way, as shown in fig. 6, in negative pressure recycling
Starting stage, that is, the insulation indoor pressure value of gas is in the first setup pressure value p1With the second setup pressure value p2Between when, by
In this stage insulation the indoor pressure value of gas it is relatively high in entire negative pressure recovery stage, therefore, wherein in a branch path
The second control valve 3211, vacuum pump 3212 can open, to prevent multiple vacuum pumps 3212 while vacuum pump when opening
The 3212 excessive caused 3212 irreversible structural destruction of vacuum pump of load, particularly due to multiple vacuum pumps 3212
It opens simultaneously, the capacity of each vacuum pump 3212 is superimposed, and the gross exhaust gas of multiple vacuum pumps 3212 is caused to be far longer than
The air-breathing and capacity of one compressor 313, downstream compressor heap of the gas that multiple vacuum pumps 3212 are discharged in vacuum pump 3212
Product, to cause 3212 load of vacuum pump excessive；With the decline of the insulation indoor pressure value of gas, when the insulation indoor pressure of gas
Value drops to the second setup pressure value p2When, the gas chamber interior insulation gas that insulate at this time is very thin, therefore, as shown in fig. 7,
The second control valve 3211, vacuum pump 3212 at least one branch path in other branch paths can be opened, true to increase
The number of 3212 work of sky pump, increases total capacity of vacuum pump 3212, improves the inspiratory capacity of the first compressor 313, improve
The utilization rate of first compressor 313, meanwhile, multiple vacuum pumps 3212 are evacuated simultaneously can increase the speed of evacuation, shorten negative pressure and return
The time in receipts stage improves the treatment effeciency of insulating gas so as to shorten the total time of entire recovery stage, has greatly to meet
The requirement of the insulating gas organic efficiency of the electrical equipment of capacity insulation gas chamber.
In negative pressure recovery stage, in order to ensure the pressure on the first main line 322 is in pre-set pressure range, such as Fig. 7 institutes
Show, the second branch 32 further includes the first main line 322, and the one end on the first main line 322 is connected with the downstream of a plurality of branch path, separately
One end is connected in the first branch 31 between pressure reducing valve 312 and the first compressor 313, the second control valve in a plurality of branch path
3211 be servo valve, and the second control valve 3211 can adjust aperture according to the pressure size on the first main line 322, such as when first
Pressure on main line 322 is higher than pressure set points P1When, the second control valve 3211 can reduce aperture, to reduce vacuum pump 3212
Air inflow, to reduce the pressure at expulsion and capacity of vacuum pump 3212, and then reduce the pressure on the first main line 322, prevent
Pressure only on the first main line 322 is excessive.By the adjusting of 3211 aperture of the second control valve, vacuum pump can be accurately controlled
3212 capacity and pressure at expulsion, to make the pressure on the first main line 322 be in setting value P1In following range, in turn
Ensure that the equal component workings of first compressor 313 in 322 downstream of the first main line are normal.
Certainly, other than the second control valve 3211 adjusts the pressure that aperture controls on the first main line 322, vacuum pump 3212
May be frequency conversion vacuum pump, when the pressure on the first main line 322 is higher than pressure set points P1When, frequency conversion vacuum pump can pass through
Reduce rotating speed come to reduce the air inflow of vacuum pump 3212, to reduce the pressure at expulsion and capacity of vacuum pump 3212, in turn
Reduce the pressure on the first main line 322, prevents the pressure on the first main line 322 excessive.
In order to which the pressure further ensured that on the first main line 322 is in pre-set pressure range, as shown in fig. 7, second
Road 32 further includes the first pressure release branch 323 and the second pressure release branch 324 being in parallel, the first pressure release branch 323 and the second pressure release
The first end of branch 324 is connected with the first main line 322, the second end of the first pressure release branch 323 and the second pressure release branch 324
It is connected with the upstream end of branch path, the first pressure release branch 323 is equipped with third control valve 3231, the second pressure release branch 324
It is equipped with the first relief valve 3241.If when the second control valve 3211 is opened completely, the pressure on the first main line 322 also continues to
Rise, when the pressure on the first main line 322 is more than the pressure release Opening pressure P of the first relief valve 32414When, the first relief valve 3241
Pressure release is opened, to prevent the pressure on the first main line 322 from rising；If it is dry that the first relief valve 3241 is in after open state first
Pressure on road 322 also continues to rise, when the pressure on the first main line 322 is more than second pressure value P2When, third control valve
3231 open pressure release, further to prevent the pressure on the first main line 322 from rising；If third control valve 3231 is in opening state
When state, pressure also continues to rise, and when more than maximum upper limit pressure, which shuts down and send out superpressure police
Show.By the first relief valve 3241 of setting and third control valve 3231, it can be effectively prevented superpressure on the first main line 322, from
And further ensure that the normal work of the equal components of first compressor 313 in 322 downstream of the first main line.
In order to slow down the pressure oscillation in 3212 downstream of vacuum pump, as shown in fig. 7, the first main line 322 is equipped with first gas
Stable-pressure device 3221, first gas stable-pressure device 3221 are in the downstream of 3212 exhaust outlet of vacuum pump, can be to vacuum pump 3212
The gas being discharged plays the role of buffering, can be with the pressure oscillation of mitigation of gases, to ensure to be located at first gas stable-pressure device
The normal work of the components such as first compressor 313 in 3221 downstreams.
Wherein, first gas stable-pressure device 3221 can be surge tank, vacuum tank etc., be not specifically limited herein.
In the case where being equipped with first gas stable-pressure device 3221 on the first main line 322, first gas stable-pressure device 3221
It include the first voltage stabilizing gas chamber being connected with the first main line 322.Wherein, the first pressure release branch 323 and the second pressure release branch 324
Connection relation between first end and the first main line 322 is not unique, for example, as shown in fig. 7, the first pressure release branch 323 and
The first end of two pressure release branches 324 can be connected with the first voltage stabilizing gas chamber.In addition, the first pressure release branch 323 and second is let out
The first end of pressure branch 324 can also be connected directly with the first main line 322 logical.It is let out compared to the first pressure release branch 323 and second
The first end of pressure branch 324 is connected directly logical scheme, the first pressure release branch 323 and the second pressure release branch with the first main line 322
The scheme that the first end on road 324 is connected with the first voltage stabilizing gas chamber, since the first indoor pressure of voltage stabilizing gas is relatively stablized, in this way
The first relief valve 3241 and third control are caused when the pressure peak that can be generated to avoid the pressure oscillation on the first main line 322
Valve 3231 processed is frequently opened, to be conducive to prevent the valve core movement of the first relief valve 3241 and third control valve 3231 from frequently grinding
Damage, and then it is conducive to extend the service life of 3231 parts of the first relief valve 3241 and third control valve.
Wherein, the first relief valve 3241 refers to the valve for having decompression function, such as overflow valve, safety valve etc..
First pressure sensor 3222 is connected on first main line 322, the pressure on the first main line 322 can be by the first pressure
Force snesor 3222 measures, and such second control valve 3211 can be according to the pressure measured by first pressure sensor 3222
Value adjusts aperture.The installation position of first pressure sensor 3222 is not also unique, for example, as shown in fig. 7, first pressure senses
Device 3222 can be arranged on first gas stable-pressure device 3221, and first pressure sensor 3222 is by surveying in the first voltage stabilizing gas chamber
Pressure, to obtain the pressure value on the first main line 322.
When insulating gas processing unit provided by the utility model is when positive pressure recycles, as recovery time increases, electrically
The indoor pressure value of insulation gas of equipment also constantly reduces, and pressure p is set when the insulation indoor pressure value of gas drops to third3
(such as 0.2MPa) below when, at this point, the admission pressure of 313 air entry of the first compressor is very low, the first compressor 313
Inspiratory capacity and capacity substantially reduced, to make the speed of the recycling of this stage insulating gas be greatly reduced, in order to
The recycling speed of the stage insulating gas is improved, as shown in figure 5, the 4th control valve 315 is additionally provided in the first branch 31, the 4th control
Valve 315 processed be located at the upstream of the first compressor 313, a plurality of branch path and 31 link position 316 of the first branch downstream, connection position
Set 316 downstreams for being located at vacuum pump 3212；Recycling branch 3 further includes third branch 33, and third branch 33 includes supercharging branch
331, one end of supercharging branch 331 is connected in the first branch 31 between the 4th control valve 315 and the first compressor 313, separately
One end is connected in the first branch 31 between the 4th control valve 315 and link position 316；Increase along the direction for being from upstream to downstream
It presses and is equipped with the 5th control valve 3311 and booster 3312 on branch 331 successively, the pressure at expulsion of booster 3312 is not higher than first
The pressure of inspiration(Pi) of compressor 313.Wherein, booster 3312 can be compressor, or Pneumatic booster pump etc. is not done herein
It is specific to limit.Pressure p is set when the insulation indoor pressure value of gas drops to third3When value, the 4th control valve 315 is closed, and the 5th
Control valve 3311 and booster 3312 are opened, and the insulation indoor insulating gas of gas is through the 5th control valve 3311, booster 3312
Supercharging after, enter in the air entry of the first compressor 313.It, in this way can be with since booster 3312 can be by gas boosting
The pressure for entering 313 air inlet gas of the first compressor is improved, the pressure at expulsion and pressure of inspiration(Pi) of the first compressor 313 are reduced
Between difference, so as to improve the capacity of the first compressor 313, and then the recycling of the stage insulating gas can be improved
Speed；In addition, booster 3312 is set in 313 upstream of the first compressor, it can be in the power and size of the first compressor 313
In the case of constant, recycling speed is improved, is avoided using cost, occupied space and institute caused by powerful compressor
Send out being significantly increased on noise.
It should be noted that：When a plurality of branch path is indirectly connected with by the first main line 322 with the first branch 31, a plurality of point
Branch and the link position 316 that 31 link position 316 of the first branch is specifically 322 downstream of the first main line and the first branch 31；
When a plurality of branch path and the first branch 31 are directly connected to, the 4th control valve 315 is to be located at each branch path and the first branch 31
Link position 316 downstream.
Wherein, the first compressor 313 can be common compressor, the first compressor 313 or frequency-changeable compressor.
Compared to common compressor, frequency-changeable compressor can adjust the rotating speed of compressor, such first compressor 313 can according into
The big minor adjustment rotating speed of atmospheric pressure and air inflow, so as to improve the utilization rate of the first compressor 313, power consumption significantly under
Drop, realizes energy-efficient.The pressure oscillation on supercharging branch 331 in order to slow down 3312 upstream of booster, as shown in figure 5,
It is additionally provided with second gas stable-pressure device 3313 on supercharging branch 331, second gas stable-pressure device 3313 is set to the 5th control valve
Between 3311 and booster 3312, second gas stable-pressure device 3313 is the upstream in 3312 air entry of booster, in this way may be used
To stablize the pressure before 3312 air entry of booster, slow down the fluctuation of pressure, to avoid influencing the normal work of booster 3312
Make, it is advantageous to the recycling speed for improving gas.
Wherein, second gas stable-pressure device 3313 can be surge tank, vacuum tank etc., be not specifically limited herein.
In order to avoid the excessive air-breathing to booster 3312 of pressure on the supercharging branch 331 of 3312 upstream of booster causes
Prodigious influence, as shown in figure 5, third branch 33 further includes third pressure release branch 332 and the 4th pressure release branch parallel with one another
333, the first end of third pressure release branch 332 and the 4th pressure release branch 333 with positioned at the 5th control valve 3311 and booster
Supercharging branch 331 between 3312 is connected, and the second end of third pressure release branch 332 and the 4th pressure release branch 333 is with first
The air inlet of compressor 313 is connected, and third pressure release branch 332 is equipped with the 6th control valve 3321, on the 4th pressure release branch 333
Equipped with the second relief valve 3331.When the pressure on the supercharging branch 331 of 3312 upstream of booster is more than the second relief valve 3331
Pressure release Opening pressure P5When, the second relief valve 3331 opens pressure release, on the supercharging branch 331 to prevent 3312 upstream of booster
Pressure rises；If the second relief valve 3331 is in the pressure of 3312 upstream of booster after open state being pressurized on branch 331
It also continues to rise, when pressure is more than third pressure value P6When, the 6th control valve 3321 opens pressure release, further to prevent booster
Pressure on the supercharging branch 331 of 3312 upstreams rises；If the 6th control valve 3321 is in open state, pressure also continues to
Rise, when more than the maximum inspiratory pressure of booster 3312, which shuts down and send out superpressure warning.It is logical
The second relief valve 3331 of setting and the 6th control valve 3321 are crossed, the supercharging branch of 3312 upstream of booster can be effectively prevented
Superpressure on 331, so that it is guaranteed that the normal work of booster 3312.
Wherein, similar with the first relief valve 3241, the second relief valve 3331 also refers to the valve with decompression function, such as
Overflow valve, safety valve etc..
Connection relation between third pressure release branch 332 and the first end and supercharging branch 331 of the 4th pressure release branch 333 is simultaneously
It is not unique, for example, as shown in figure 5, second gas stable-pressure device 3313 includes the second voltage stabilizing gas being connected with supercharging branch 331
The first end of room, third pressure release branch 332 and the 4th pressure release branch 333 can be connected with the second voltage stabilizing gas chamber.In addition, the
The first end of three pressure release branches 332 and the 4th pressure release branch 333 can also be connected directly with supercharging branch 331 logical.Compared to
The first end of three pressure release branches 332 and the 4th pressure release branch 333 is connected directly logical scheme with supercharging branch 331, and third is let out
The scheme that the first end of pressure branch 332 and the 4th pressure release branch 333 is connected with the second voltage stabilizing gas chamber, due to the second voltage stabilizing gas
Indoor pressure relatively stablize, thus can to avoid be pressurized branch 331 on pressure oscillation generate pressure peak when cause
Second relief valve 3331 and the 6th control valve 3321 are frequently opened, to be conducive to prevent the second relief valve 3331 and the 6th from controlling
The valve core movement frequent wear of valve 3321, and then it is conducive to extend the second relief valve 3331 and 3321 parts of the 6th control valve
Service life.
The pressure oscillation in the first branch 31 in order to slow down 313 upstream of the first compressor, as shown in figure 5, the first branch
It is additionally provided with third gas stable-pressure device 317 on 31, third gas stable-pressure device 317 is located at the upstream, a plurality of of the first compressor 313
The downstream of branch path and 31 link position 316 of the first branch, third gas stable-pressure device 317 are inhaled in the first compressor 313
The upstream of gas port can stablize the pressure before 313 air entry of the first compressor, slow down the fluctuation of pressure, in this way to avoid shadow
The normal work for ringing the first compressor 313 is advantageous to the recycling speed for improving gas.
Wherein, third gas stable-pressure device 317 can be surge tank, vacuum tank etc., be not specifically limited herein.
When insulating gas processing unit provided by the utility model is in positive pressure recovery stage, as recovery time increases,
The indoor pressure value of insulation gas of electrical equipment also constantly reduces, when the insulation indoor pressure value of gas drops to the 4th setting pressure
p4(the namely full admission pressure of the first compressor 313, such as 0.4MPa) below when, since pressure reducing valve 312 is to gas
Flowing has prodigious resistance, as shown in figure 3, if gas along the first branch 31 through the first control valve 311, pressure reducing valve 312, enter
Into the first compressor 313, then the recycling speed of gas can be substantially reduced in this way.Exist to improve insulating gas processing unit
The pressure of insulation gas chamber drops to the 4th setting pressure p4Below, the recycling speed before negative pressure recovery stage, as shown in figure 4,
It further includes the 4th branch 34, one end of the 4th branch 34 and 31 phase of the first branch of 311 upstream side of the first control valve to recycle branch 3
Connection, the other end are connected in the first branch 31 between pressure reducing valve 312 and the first compressor 313, and the 4th branch 34 is equipped with
7th control valve 341.When the insulation indoor pressure value of gas drops to the 4th setting pressure p4When value, the first control valve 311 is closed,
7th control valve 341 is opened, and such gas just requires no pressure reducing valve 312, and the resistance of gas flowing greatly reduces, to improve
The recycling speed of insulating gas processing unit at this stage, and then shorten the total time of entire removal process.
As shown in figure 8, insulating gas processing unit provided by the utility model further includes inflation branch 4, inflation branch 4
One end is connected with the first connector 1, and the other end is connected with the second connector 2, inflate swum over in 4 upper edge of branch the direction in downstream according to
It is secondary to be equipped with the 8th control valve 41, the second heat exchanger 42, the second pressure reducing valve 43, filter 44 and the 9th control valve 45.To electricity
When carrying out supplementary insulation gas in the insulation gas chamber of gas equipment, the 8th control valve 41, the 9th control valve 45 are opened, the insulation of liquid
Gas or the insulating gas of gas-liquid mixed are flowed out from fluid reservoir, after the 8th control valve 41, are inhaled into heat exchanger 314
After thermal evaporation, entered in the insulation gas chamber of electrical equipment through the second pressure reducing valve 43, filter 44, the 9th control valve 45.
As shown in figure 9, insulating gas processing unit provided by the utility model further includes vacuumizing branch 5, branch is vacuumized
The one end on road 5 is connected with the first connector 1, and the other end is connected with ambient atmosphere, vacuumizes 5 upper edge of branch and is from upstream to downstream
Direction successively be equipped with the tenth control valve 51 and vacuum pump group 52.It is needing the indoor air extraction of the insulation gas of electrical equipment
When, the tenth control valve 51 is opened, and vacuum pump group 52 is opened, the indoor air extraction of the gas that will insulate, until insulation gas is indoor
When pressure reaches rated pressure.
In insulating gas processing unit provided by the utility model, the first to the tenth control valve can be solenoid valve, electronic
Valve etc., is not specifically limited herein.
Second aspect, the utility model embodiment provide a kind of insulating gas processing unit as described in first aspect
Control method, including：When recycling starts, as shown in figure 3, the second control valve 3211, vacuum pump 3212 in every branch path
Be turned off, the first control valve 311 is opened, the first compressor 313 is opened so that insulating gas is flowed by the first connector 1, then into
Enter in the first branch 31, after the first control valve 311, pressure reducing valve 312, the first compressor 313 and heat exchanger 314, by second
Connector 2 flows out；When the indoor pressure value of insulation gas of electrical equipment drops to the first setup pressure value p1(such as 0.02MPa)
When, negative pressure recycling starts, at this point, as shown in fig. 6, the first control valve 311 is closed, wherein branch path (such as it is as shown in the figure
Branch path 321a) on the second control valve 3211 open, vacuum pump 3212 is opened so that insulating gas is from this branch path
One end flows into, and is flowed out by the other end of this branch path；When the insulation indoor pressure value of gas drops to the second setup pressure value
p2When (such as -0.05MPa), in other branch paths, the second control valve 3211, vacuum pump 3212 at least one branch path are opened
It opens, so that insulating gas is flowed into from one end of at least one branch path, and is flowed out by the other end of at least one branch path；Such as
Shown in Fig. 7, when the insulation indoor pressure value of gas drops to the second setup pressure value p2When, the second control valve on branch path 321b
3211, vacuum pump 3212 is opened, so that insulating gas is flowed into from one end of branch path 321b, other end outflow.
Wherein, p2<p1, when the insulation indoor pressure value of gas drops to the second setup pressure value p2When, in other branch paths
In, it can be that the second control valve 3211, the vacuum pump 3212 in a branch path are first opened, then open remaining branch one by one again
The second control valve 3211, the vacuum pump 3212 of road；Can also be the second control valve 3211, the vacuum pump in multiple branch paths
3212 open simultaneously, specifically can be herein not specifically limited depending on actual conditions.
The utility model embodiment provide insulating gas processing unit control method it is solved the technical issues of and
Acquired technique effect, it is solved with insulating gas processing unit described in first aspect the technical issues of and it is acquired
Technique effect it is identical, details are not described herein.
After negative pressure recycling starts, in order to ensure the pressure on the first main line 322 is in pre-set pressure range, such as scheme
Shown in 7, when the pressure on the first main line 322 is more than first pressure value P1When, the second control valve 3211 reduces opening value, to reduce
The air inflow of vacuum pump 3212 to reduce the pressure at expulsion and capacity of vacuum pump 3212, and then reduces on the first main line 322
Pressure, prevent the pressure on the first main line 322 excessive, and then ensure the 313 grade portions of the first compressor in 322 downstream of the first main line
Part is working properly.
In order to which the pressure further ensured that on the first main line 322 is in pre-set pressure range, as shown in fig. 7, when first
Pressure on main line 322 is more than the pressure release Opening pressure P of the first relief valve 32414When, the first relief valve 3241 opens pressure release, with
The pressure on the first main line 322 is prevented to rise；If the first relief valve 3241 is in the pressure on the first main line 322 after open state
Power also continues to rise, when the pressure on the first main line 322 is more than second pressure value P2When, third control valve 3231 opens pressure release,
Further to prevent the pressure on the first main line 322 from rising；If third control valve 3231 is in open state, pressure also after
It is continuous to rise, when more than third pressure value P3When, insulating gas processing unit shuts down and sends out superpressure warning.Setting in this way
Method can be effectively prevented superpressure on the first main line 322, thereby further ensure that first compression in 322 downstream of the first main line
The normal work of the components such as machine 313.
Wherein, P1、P2、P3、P4Meet：P1<P4<P2<P3；First pressure value P1, second pressure value P2, third pressure value P3's
What measurement can be measured by first pressure sensor 3222.
When the first end of the first pressure release branch 323 and the second pressure release branch 324 is connected with the first voltage stabilizing gas chamber, the
One pressure sensor 3222 is by surveying the first indoor pressure of voltage stabilizing gas, to obtain the pressure value on the first main line 322.
After recycling starts, pressure p is set when the insulation indoor pressure value of gas drops to third3(such as 0.2MPa)
When, at this point, the admission pressure of 313 air entry of the first compressor is very low, the inspiratory capacity and capacity of the first compressor 313
It has been substantially reduced that, to make the speed of the recycling of this stage insulating gas be greatly reduced, in order to improve stage insulation gas
The recycling speed of body, as shown in figure 5, the 4th control valve 315 is closed, the 5th control valve 3311 and booster 3312 are opened, with
Insulating gas is set to enter from one end of supercharging branch 331, through the 5th control valve 3311, after the supercharging of booster 3312, by being pressurized
The other end of branch 331 flows out, and enters in the air entry of the first compressor 313.Since booster 3312 can be by gas
Supercharging can improve the pressure for entering 313 air inlet gas of the first compressor in this way, reduce the exhaust of the first compressor 313
Difference between pressure and pressure of inspiration(Pi) so as to improve the capacity of the first compressor 313, and then can improve the stage
The recycling speed of insulating gas.Wherein, p3>p1。
After recycling starts, before negative pressure recycling starts, when the insulation indoor pressure value of gas drops to the 4th setting pressure
Power p4When (the namely full admission pressure of the first compressor 313, such as 0.4MPa), since pressure reducing valve 312 is to the stream of gas
Dynamic have prodigious resistance, as shown in figure 3, if gas along the first branch 31 through the first control valve 311, pressure reducing valve 312, enter
In first compressor 313, then the recycling speed of gas can be substantially reduced in this way.In order to improve insulating gas processing unit exhausted
The pressure of edge gas chamber drops to the 4th setting pressure p4Below, the recycling speed before negative pressure recovery stage, as shown in figure 4, the
One control valve 311 is closed, and the 7th control valve 341 is opened, so that insulating gas is from one end inflow by the 4th branch 34, and by the
The other end of four branches 34 flows out.Gas just requires no pressure reducing valve 312 in this way, and the resistance of gas flowing greatly reduces, to
The recycling speed of insulating gas processing unit at this stage is improved, and then shortens the total time of entire removal process.Wherein,
p4>p1。
Above description is only a specific implementation of the present invention, but the scope of protection of the utility model is not limited to
In this, any one skilled in the art within the technical scope disclosed by the utility model, can readily occur in variation
Or replace, it should be covered within the scope of the utility model.Therefore, the scope of protection of the utility model should be with the power
Subject to the protection domain that profit requires.
Claims (10)
1. a kind of insulating gas processing unit, including the first connector, the second connector and recycling branch, which is characterized in that described
Recycling branch includes the first branch and the second branch, the first branch be connected to first connector and second connector it
Between, edge is from upstream in the first branch described in the direction in downstream to be equipped with the first control valve, pressure reducing valve, the first compressor and changes successively
Hot device, the second branch include the branch path of a plurality of parallel connection, one end of a plurality of branch path with first control valve
The first branch of upstream side is connected, and the other end is all connected to described between the pressure reducing valve and first compressor
In the first branch, the direction that every branch path upper edge is from upstream to downstream is equipped with the second control valve and vacuum pump successively.
2. insulating gas processing unit according to claim 1, which is characterized in that the second branch further includes first dry
Road, the one end on first main line are connected with the downstream of a plurality of branch path, the other end be connected to the pressure reducing valve with
In the first branch between first compressor, second control valve in a plurality of branch path is servo
Valve, second control valve can adjust aperture according to the pressure size on first main line.
3. insulating gas processing unit according to claim 2, which is characterized in that the second branch further includes being in parallel
The first pressure release branch and the second pressure release branch, the first end of the first pressure release branch and the second pressure release branch is and institute
It states the first main line to be connected, the second end of the first pressure release branch and the second pressure release branch is upper with the branch path
Trip end is connected, and the first pressure release branch road is equipped with third control valve, and the second pressure release branch road is equipped with the first relief valve.
4. insulating gas processing unit described in any one of claim 1 to 3, which is characterized in that the second branch
Further include the first main line, the one end on first main line is connected with the downstream of a plurality of branch path, and the other end is connected to
In the first branch between the pressure reducing valve and first compressor, first main line is equipped with first gas voltage stabilizing
Device.
5. insulating gas processing unit according to claim 4, which is characterized in that the second branch further include mutually simultaneously
In the case of the first pressure release branch and the second pressure release branch of connection, the first gas stable-pressure device includes and first main line
The first end of the first voltage stabilizing gas chamber being connected, the first pressure release branch and the second pressure release branch is steady with described first
Plenum chamber is connected.
6. insulating gas processing unit described in any one of claim 1 to 3, which is characterized in that
It is additionally provided with the 4th control valve in the first branch, the 4th control valve is located at the upstream, more of first compressor
The downstream of branch path described in item and the first branch link position, the link position are located at the downstream of the vacuum pump；
The recycling branch further includes third branch, and the third branch includes supercharging branch, and one end of the supercharging branch connects
It is connected in the first branch between the 4th control valve and first compressor, the other end is connected to the 4th control
In the first branch between valve processed and the link position；
It is equipped with the 5th control valve and booster successively along supercharging branch road described in the direction in downstream is from upstream to, the booster
Pressure at expulsion is not higher than the pressure of inspiration(Pi) of first compressor.
7. insulating gas processing unit according to claim 6, which is characterized in that the supercharging branch road is additionally provided with second
Gas voltage stabilizer, the second gas stable-pressure device are set between the 5th control valve and the booster.
8. insulating gas processing unit according to claim 6, which is characterized in that the third branch further includes mutually simultaneously
The first end of the third pressure release branch and the 4th pressure release branch of connection, the third pressure release branch and the 4th pressure release branch with
The supercharging branch between the 5th control valve and the booster is connected, the third pressure release branch and described
The second end of 4th pressure release branch is connected with the air inlet of first compressor, and third pressure release branch road is equipped with the
Six control valves, the 4th pressure release branch road are equipped with the second relief valve.
9. insulating gas processing unit described in any one of claim 1 to 3, which is characterized in that the first branch
On be additionally provided with third gas stable-pressure device, the third gas stable-pressure device is located at the upstream of first compressor, a plurality of institute
The downstream of branch path and the first branch link position is stated, the link position is located at the downstream of the vacuum pump.
10. insulating gas processing unit described in any one of claim 1 to 3, which is characterized in that the recycling branch
Further include the 4th branch, one end of the 4th branch is connected with the first branch of first control valve upstream side,
The other end is connected in the first branch between the pressure reducing valve and first compressor, and the 4th road is equipped with
7th control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820253506.7U CN207893412U (en) | 2018-02-12 | 2018-02-12 | A kind of insulating gas processing unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820253506.7U CN207893412U (en) | 2018-02-12 | 2018-02-12 | A kind of insulating gas processing unit |
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| CN207893412U true CN207893412U (en) | 2018-09-21 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108386713A (en) * | 2018-02-12 | 2018-08-10 | 国家电网公司 | A kind of insulating gas processing unit and its control method |
| CN113309692A (en) * | 2021-05-27 | 2021-08-27 | 广东电网有限责任公司 | Air pressure supply method, device, medium and electronic equipment for GIS equipment |
-
2018
- 2018-02-12 CN CN201820253506.7U patent/CN207893412U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108386713A (en) * | 2018-02-12 | 2018-08-10 | 国家电网公司 | A kind of insulating gas processing unit and its control method |
| CN108386713B (en) * | 2018-02-12 | 2023-12-01 | 国家电网公司 | Insulating gas treatment device and control method thereof |
| CN113309692A (en) * | 2021-05-27 | 2021-08-27 | 广东电网有限责任公司 | Air pressure supply method, device, medium and electronic equipment for GIS equipment |
| CN113309692B (en) * | 2021-05-27 | 2023-02-03 | 广东电网有限责任公司 | GIS equipment air pressure supply method, device, medium and electronic equipment |
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