CN109838934A - Explosion-proof stable type high-temperature molten salt heat collecting field and note salt method - Google Patents
Explosion-proof stable type high-temperature molten salt heat collecting field and note salt method Download PDFInfo
- Publication number
- CN109838934A CN109838934A CN201710809225.5A CN201710809225A CN109838934A CN 109838934 A CN109838934 A CN 109838934A CN 201710809225 A CN201710809225 A CN 201710809225A CN 109838934 A CN109838934 A CN 109838934A
- Authority
- CN
- China
- Prior art keywords
- cold
- salt
- tank
- explosion
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 150000003839 salts Chemical class 0.000 title claims abstract description 93
- 238000000034 method Methods 0.000 title claims description 10
- 238000004880 explosion Methods 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims description 42
- 239000007788 liquid Substances 0.000 claims description 12
- 238000005485 electric heating Methods 0.000 claims description 10
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 6
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000010992 reflux Methods 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 235000010333 potassium nitrate Nutrition 0.000 claims description 3
- 239000004323 potassium nitrate Substances 0.000 claims description 3
- 235000010344 sodium nitrate Nutrition 0.000 claims description 3
- 239000004317 sodium nitrate Substances 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000003032 molecular docking Methods 0.000 description 4
- 238000010248 power generation Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 239000012267 brine Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910001347 Stellite Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- -1 and e.g. Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- AHICWQREWHDHHF-UHFFFAOYSA-N chromium;cobalt;iron;manganese;methane;molybdenum;nickel;silicon;tungsten Chemical compound C.[Si].[Cr].[Mn].[Fe].[Co].[Ni].[Mo].[W] AHICWQREWHDHHF-UHFFFAOYSA-N 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000013529 heat transfer fluid Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 125000003367 polycyclic group Chemical group 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a kind of explosion-proof stable type high-temperature molten salt heat collecting fields, including the cold tank being sequentially communicated, first groove type heat collector, bridge section connecting tube, second groove type heat collector and hot tank, the hot tank is connected to by the road or after steam generation mechanism with cold tank, first groove type heat collector and the second groove type heat collector respectively includes multiple sub- groove type heat collectors, the rotary joint being connected to via high-temperature bellow is respectively arranged between the thermal-collecting tube of sub- groove type heat collector described in two and between thermal-collecting tube and cold tank or hot tank, the bridge section connecting tube and the first groove type heat collector corresponding position are provided with explosion rupture disk, sensor is provided in the bridge section connecting tube at the explosion rupture disk rear portion, the sensor is flow transmitter and/or pressure transmitter.Rupture disk has been installed additional in the place in the exit of the first groove type heat collector, break through rupture disk first when there is salt hammer in this way rather than has damaged pipeline, improves integral protection.
Description
Technical field
The present invention relates to photo-thermal electro-technical fields, more particularly to a kind of explosion-proof stable type high-temperature molten salt heat collecting field and note salt
Method.
Background technique
The power generation of solar energy paraboloid trough type is to be gathered solar radiation by tracking the linear parabolic mirror of solar motion
Collect the technology that heating heat-transfer fluid generates electricity in the absorbing pipe being located at paraboloid focal line.The key of slot type power station heat collecting field
Equipment mainly includes heat collector, absorbing pipe and thermal storage device etc..Driving tracking system is the core of heat collector day by day, is photo-thermal acquisition
Device makes full use of the guarantee of solar energy.By driving tracking system, photo-thermal collector can track the sun from sunrise to sunset.
As CN105545618A discloses a kind of solar parabolic through power generation system using medium of fused salt and hot power generation
Method, system include groove type heat collector, brine heat exchanger, steam turbine generator, low-temperature heat accumulating tank, high-temperature heat accumulation tank and row's fuse salt
System；Groove type heat collector is made of the independent sub- groove type heat collector of multiple row, and each sub- groove type heat collector is by multiple thermal-collecting tubes
It is concatenated by sequence from low to uper part.
But existing heat collecting field, because place is big, round-trip length reaches 800m, will lead to problems in note salt for the first time,
How designing heat collecting field and efficiently accomplishing first note salt becomes urgent problem.
Summary of the invention
In view of the technical drawbacks of the prior art, it is an object of the present invention to provide a kind of explosion-proof stable type high temperature meltings
Salt heat collecting field and note salt method.
The technical solution adopted to achieve the purpose of the present invention is:
A kind of explosion-proof stable type high-temperature molten salt heat collecting field, cold tank, the first groove type heat collector, bridge section including being sequentially communicated connect
Adapter tube, the second groove type heat collector and hot tank, the hot tank are connected to by the road or after steam generation mechanism with cold tank, institute
The first groove type heat collector and the second groove type heat collector stated respectively include multiple sub- groove type heat collectors, pilot trench formula collection described in two
It is respectively arranged between the thermal-collecting tube of hot device and between thermal-collecting tube and cold tank or hot tank and is connect via the rotation that high-temperature bellow is connected to
Head, the bridge section connecting tube and the first groove type heat collector corresponding position are provided with explosion rupture disk, after the explosion rupture disk
Sensor is provided in the bridge section connecting tube in portion, the sensor is flow transmitter and/or pressure transmitter.
The bridge section connecting tube is connect through high-temperature metal bellows with the rotary joint.
It is serially connected with tee tube in the bridge section connecting tube, is provided on one of nozzle of tee tube explosion-proof
Piece is provided with collecting tank below the corresponding nozzle of explosion rupture disk.
The rotary joint includes connection outer cylinder and two inner cylinders, the inner cylinder include one end and the height
What warm bellows was fixedly connected connects skirt, is fixed at the butt-joint corrugated pipe for connecing the skirt other end, and is fixed at pair
The sealing ring of corrugated tube end is connect, the sealing ring of two inner tubes keeps being set to the connection outer cylinder in sealing contactly
Inside, it is described connect skirt respectively with connect that outer cylinder is rotatably fixedly connected and sealing ring keeps pre- level pressure described in making two
Power.
It is formed with positioning step on skirt in described connecing, is arranged with axle sleeve or bearing in the positioning step, with
The pressure ring top that the connection outer cylinder is fixedly connected, which is held, compresses two sealing rings on the bearing or axle sleeve.
Electric heater is provided with outside inner cylinder in the connection outer cylinder outside or inside, at the connection outer cylinder bottom
Portion is provided with leakage salt mouth.
For the length of butt-joint corrugated pipe in 30-80mm, rigidity is greater than 100N/mm, and the sealing ring is corresponding plane, slope
Face or cambered surface sealing pair.
It is respectively arranged with multipoint temperature sensor in the cold tank and hot tank, is provided with spy in the bridge section connecting tube
Pin type temperature sensor is provided in the bridge section connecting tube and on the high-temperature bellow with detecting its tube wall temperature
Electric heating mechanism, the electric heating mechanism are the spaced electromagnetic heating coil of electric-heating belt or multistage wound on it,
Insulating layer is coated in the bridge section connecting tube and on the high-temperature bellow.
A kind of note salt method of the explosion-proof stable type high-temperature molten salt heat collecting field, includes the following steps,
1) control valve, make to pump out from cold tank then ring be finally directly back to through Jing Chang cold tank flow path it is unimpeded,
2) temperature is detected, wherein pipeline and 300 DEG C of valve electric tracing or more, the electric heater of rotary joint is heated to
500 DEG C or more, 350 DEG C of joule heater or more of thermal-collecting tube, 350 DEG C of cold tank electric heater or more, the cold cold salt temperature of tank
320 DEG C of degree or more；
3) electric heater for closing rotary joint, starts cold salt pump, changes frequency after running 30 seconds with low-limit frequency, if
Cold salt pump discharge gradually increases cold 1%/30s of pump frequency without flow indication, until limit value；If frequency adds to maximum frequency
Or rated frequency 65% stops cold salt pump also without flow indication, after flow transmitter or pressure transmitter have display, then with 3%/
Minute frequency increases, and flow is made to be gradually increased to minimum discharge, i.e. 60% metered flow；
4) cold salt cellar liquid level drop-out value, mirror field pipe temperature, pressure transmitter, temperature sensor, flow transmitter are monitored
It is whether stable；
5) occur after stablizing reflux, determine cold tank level stability and cold salt pump minimum discharge is kept to run, complete cold tank note
Salt.
Further include cold tank fused salt injection step in the step 1), first confirms that cold salt cellar ventilation is smooth, temperature inspection
After surveying qualification, sodium nitrate and potassium nitrate is put into lava stove after dissolving according to a certain percentage and infuse the injection of salt mouth from cold tank with pump
Cold tank, notices whether the cold tank liquid level of observation gradually goes up, if liquid level it is not upper it is long if stop infusing salt check whether there is leakage or other
Reason, liquid level goes up to setting height in cold tank, starts cold salt pump.
Compared with prior art, the beneficial effects of the present invention are:
Rupture disk has been installed additional in the place in the exit of the first groove type heat collector, breaks through explosion first when there is salt hammer in this way
Piece rather than damage pipeline, improve integral protection.Meanwhile many places use high-temperature bellow, utilize two bellowss and rotation
Adapter realizes the connection between two thermal-collecting tubes, and the company of thermal-collecting tube and fixed pipeline is realized using two bellowss and swivel head
It connects, the fixation pipeline refers to bridge section connecting tube or is connected to the pipeline of cold tank or hot tank, utilizes two bellowss and rotation
The combination of connector, while guaranteeing respective self-movement, and high-temperature bellow can also effectively buffer loine pressure, improve thermal-arrest
The safety and service life of pipe.
Detailed description of the invention
Fig. 1 show explosion-proof stable type high-temperature molten salt heat collecting field structural schematic diagram of the invention.
Fig. 2 show rotary joint structure schematic diagram.
Specific embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.It should be appreciated that described herein
Specific embodiment be only used to explain the present invention, be not intended to limit the present invention.
It in the prior art, include two groups of groove type heat collectors, salt using the solar parabolic through power generation system of medium of fused salt
Water- to-water heat exchanger, steam turbine generator, cold tank, hot tank and row's melting salt system；Groove type heat collector is by multiple independent pilot trench formula thermal-arrests
Device composition, each sub- groove type heat collector includes the trailing arm that can be rotatably set on pedestal, by the reflection of trailing arm positioning support
Silver mirror, the thermal-collecting tube for being fixedly connected with the trailing arm and being set to reflection silver mirror focal point, every group of groove type heat collector it is multiple
The thermal-collecting tube of sub- groove type heat collector is sequentially connected in series, and the parallel front and back setting of two groups of groove type heat collectors, one end is connected by bridge section connecting tube
Lead in succession, the other end is connected to by pipeline with cold tank or hot tank respectively, while hot tank via pipeline or via after brine heat exchanger with
Cold tank connection, is constituted circuit with this.
As shown, explosion-proof stable type high-temperature molten salt heat collecting field of the invention, including cold tank 1, the first slot being sequentially communicated
Formula heat collector 2, bridge section connecting tube 3, the second groove type heat collector 4 and hot tank 5, the hot tank 5 stated is by the road or through steam generation
It is connected to after mechanism 8 with cold tank, first groove type heat collector and the second groove type heat collector respectively include multiple pilot trench formula thermal-arrests
Device is respectively arranged between the thermal-collecting tube of the sub- groove type heat collector and between thermal-collecting tube and cold tank or hot tank via high temperature wave
The rotary joint 7 that line pipe 6 is connected to, the bridge section connecting tube is provided with explosion-proof with the first groove type heat collector corresponding position
Piece.Before being from direction with fused salt, flows to after direction is, be provided with sensing in the bridge section connecting tube at the explosion rupture disk rear portion of Yu Suoshu
Device 8, such as pressure transmitter or flow transmitter.Meanwhile the bridge section connecting tube is through high-temperature metal bellows and the rotation
Adapter connection, makes full use of the self-characteristic of high-temperature bellow, and buffering infuses impact when salt for the first time, improves explosion-proof effect.
The first groove type heat collector and the second groove type heat collector are two groups disposed in parallel of front and back in the present invention, and pass through pipeline
Circuit is linked up in connection, causes to rupture to avoid occurring at pipeline turning salt hammer, especially in the exit of the first groove type heat collector
Place installed rupture disk additional, break through rupture disk first when there is salt hammer in this way rather than damage pipeline, improve integral protection
Property.Meanwhile many places use high-temperature bellow, realize the connection between two thermal-collecting tubes, benefit using two bellowss and rotary joint
Realize the connection of thermal-collecting tube and fixed pipeline with two bellowss and swivel head, the fixation pipeline refer to bridge section connecting tube or
It is connected to the pipeline of cold tank or hot tank, using the combination of two bellowss and rotary joint, while guaranteeing respective self-movement,
And high-temperature bellow can also effectively buffer loine pressure, improve the safety and service life of thermal-collecting tube.
Because exporting to heat collecting field at entire 800 meters to cold tank from cold salt pump is not straight line, some places turn round,
If high-frequency big flow will make impact force increase of the salt at this there is also salt hammer sometimes, by explosion rupture disk rear portion
Pressure transmitter or flow transmitter are set, have just been initially that can slowly add frequency after negotiating the corner because of the small flow band salt of low frequency
Rate effectively prevent salt to hammer the damage to pipeline into shape.
Specifically, it is serially connected with tee tube in the end of the bridge section connecting pin, in one of nozzle of tee tube
On be provided with explosion rupture disk, be provided with collecting tank at the corresponding nozzle of explosion rupture disk so as to carry out leakage salt recycling.
Wherein, it is respectively arranged with multipoint temperature sensor in the cold tank and hot tank, set in multiple temperature sensor ring weeks
It sets and is in polycyclic setting in height space, be provided with probe-type temperature sensor in the bridge section connecting tube to detect its pipe
Wall temperature is provided with electric heating mechanism, the electric heating in the bridge section connecting tube and on the high-temperature bellow
Mechanism is the spaced electromagnetic heating coil of electric-heating belt or multistage wound on it, in the bridge section connecting tube and institute
Insulating layer is coated on the high-temperature bellow stated.Each transmitter or sensor etc. can carry out data biography using networks such as Zeegbee
It is defeated, cable network etc. can also be used certainly and carry out data or control transmission.
As one of specific embodiment, the rotary joint 7 includes the connection to be fixedly connected with pedestal
Outer cylinder 71 and two inner cylinders 72, the inner cylinder include one end be fixedly connected with high-temperature bellow connect skirt 73, fixation is set
Set the sealing ring 75 that butt-joint corrugated pipe end is fixed in the butt-joint corrugated pipe 74 for connecing the skirt other end, described two
The sealing ring of inner tube keep face contact and be hermetically arranged with inside the connection outer cylinder 71, it is described to connect skirt respectively and company
Connect that outer cylinder is rotatably fixedly connected and sealing ring described in making two keeps predetermined pressure.The skirt that connects is stainless steel tube,
To realize that pressure is transmitted and is fixedly connected.
Wherein, it is formed with positioning step on skirt in described connecing, is arranged with axle sleeve or axis in the positioning step
76 are held, the top of pressure ring 77 being fixedly connected with the connection outer cylinder flange form is held makes two sealings on the bearing or axle sleeve
Ring compresses.That is, connection outer cylinder both ends are formed with flange ring, the pressure ring includes the pressure that can be inserted into the connection outer barrel
Tight ring and the connecting flange being fixedly connected with for being bolted to connection with the flange ring is changed with the compression.
Further, to improve assembly and being centered about effect, the pressure ring is divided ring, i.e., cuts open tubular pressure ring along axially centered
The design for two halves is opened, is convenient for the design of two sides bellows in this way, can equally improve whole sealing docking effect, docking is fixed
It the inner surface of pressure ring afterwards and connects skirt and directly keeps clearance fit.
Electric heating mechanism is provided with outside inner cylinder in the connection outer cylinder outside or inside, in the connection outer cylinder
Bottom is provided with leakage salt mouth.
Rotary joint of the invention connects the butt-joint corrugated pipe that certain length and rigidity are respectively welded at skirt docking, and
The other end of butt-joint corrugated pipe welds wear-resistant material sealing ring again, and after the assembly is completed, sealing ring docks and makes to dock rotary joint
Bellows has certain decrement, and then stroke after thermal expansion is efficiently used, and is supplied to required axial pretightening in sealing contact
Power, at the same the working space of the rotary components such as working media and bearing is independent.That is, directly sealing docking using pipeline
Structure type eliminates the components such as bearing to the dependence of sealing performance；Under high-temperature work environment, butt-joint corrugated pipe not only may be used
The stroke of pipeline in rotary joint is absorbed, and then increases the decrement of butt-joint corrugated pipe, is positively utilized under hot environment each
The stroke of assembly material improves sealing performance, more to improve assembling structure, is situated between with eliminating the components such as bearing and working in soda acid
To the dependence of sealing performance in matter.
Wherein, the length of butt-joint corrugated pipe is greater than 100N/mm in 30-80mm, rigidity.Wherein, the sealing to guarantee entirety
Effect, the compression pressure for sealing interannular after mounting is larger, generally in 2Mpa or more, when inside stream crosses high-temperature molten salt, and such as 580
When DEG C high-temperature molten salt, the pressure of two sealing interannulars can reach 4Mpa even more than.The butt-joint corrugated pipe material is stainless by high temperature resistant
Steel, if 304H is made, the wall thickness thickness of butt-joint corrugated pipe is in 0.6-1mm, such as 0.8mm, and pitch is in 8-12mm, such as 10mm, entirety
Butt-joint corrugated pipe length is greater than 100N/mm in 30-80mm, preferably 40-70cm, such as 50cm, 60cm, butt-joint corrugated pipe rigidity, just
It stretches in degree range and belongs to flexible deformation, no tired influence can meet and use for a long time, needed for butt-joint corrugated pipe length and calculating
Decrement is related, and sealing ring material is hard alloy, and e.g., stellite stainless steel, butt-joint corrugated pipe is fixedly connected with connecting tube
It is realized using profession welding.
The sealing ring is corresponding plane, slope surface or cambered surface sealing pair.I.e. there are three types of structures for the sealing ring: the
One is plane sealing structures, i.e. contact sealing surface is that plane docks form；Second is conical surface sealing structure, i.e. contact sealing
Face is cone match form；The third is ball face sealing structure, i.e., contact sealing surface be convex annular, concave spherical surface fit form, it is close
The obverse design of seal ring, along with to neutrality, even more improving sealing ring after sealing ring and flexible bellow welding and connect
The frictional force and sealing performance of contacting surface.
Meanwhile the invention also discloses the explosion-proof stable type high-temperature molten salt heat collecting field described in one kind for the first time or blank pipe note
Salt method, wherein the pipeline after the second sub- groove type heat collector reflux is connected to cold tank and hot tank through branch respectively, and by branch road
Control valve carry out flow path switching, the setting of each valve is as shown in the figure.When needing to carry out note salt, concrete operation step is as follows,
1) control each valve, make to pump out from cold tank then ring be finally directly back to through Jing Chang cold tank flow path it is unimpeded,
2) temperature is detected, wherein pipeline and 300 DEG C of valve electric tracing or more, the electric heater of rotary joint is heated to
500 DEG C or more, 350 DEG C of joule heater or more of thermal-collecting tube, 350 DEG C of cold tank electric heater or more, the cold cold salt temperature of tank
320 DEG C of degree or more；
3) rotary joint electric heater is closed, cold salt pump 11 is started, changes frequency after running 30 seconds with low-limit frequency, such as most
Low frequency is maximum frequency or rated frequency 50%, if the flowmeter of cold salt pump rear end gradually increases cold pump frequency without display
1%/30s, until limit value；If frequency adds to the 65% of maximum frequency or rated frequency also without flow indication, stop cold salt pump,
After flow transmitter or pressure transmitter have display, to prevent salt from hammering into shape, then with the increase of 3%/minute frequency, 3%/minute refers to
Increase the 3% of maximum frequency or rated frequency per minute, so that flow is gradually increased to minimum discharge, i.e. 60% metered flow, such as
10t/h。
4) cold salt cellar liquid level drop-out value, mirror field pipe temperature, pressure transmitter, temperature transmitter, flow transmitter are monitored
It is whether stable；
5) occur after stablizing reflux, determine cold tank level stability and cold salt pump minimum discharge is kept to run, complete cold tank note
Salt.
Further include cold tank fused salt injection step in the step 1, confirms that cold salt cellar ventilation is smooth, temperature detection is closed
After lattice, sodium nitrate and potassium nitrate are put into lava stove according to a certain percentage cold from the note salt mouth injection of cold tank with pump after dissolving
Tank pays attention to observing whether cold tank liquid level gradually goes up, stops note salt if the not upper length of liquid level and check whether there is leakage or other originals
Cause, liquid level goes up to setting height in cold tank, starts cold salt pump.
When cold salt pump operation, pay attention to adjusting aperture of the heat collecting field to cold salt cellar electric adjustable valve, highest 75%, control outlet pressure
Power is in 0.1MPa or more, cold salt pump discharge pressure < 1MPa, cold salt pump rate of discharge >=10t/h.
The above is only a preferred embodiment of the present invention, it is noted that for the common skill of the art
For art personnel, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications
Also it should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of explosion-proof stable type high-temperature molten salt heat collecting field, which is characterized in that including cold tank, the first slot type thermal-arrest being sequentially communicated
Device, bridge section connecting tube, the second groove type heat collector and hot tank, the hot tank by the road or after steam generation mechanism with it is cold
Tank connection, first groove type heat collector and the second groove type heat collector respectively include multiple sub- groove type heat collectors, described in two
Sub- groove type heat collector thermal-collecting tube between and thermal-collecting tube and cold tank or hot tank between be respectively arranged with and connect via high-temperature bellow
Logical rotary joint, the bridge section connecting tube and the first groove type heat collector corresponding position are provided with explosion rupture disk, described
Explosion rupture disk rear portion bridge section connecting tube on be provided with sensor, the sensor is flow transmitter and/or pressure inverting
Device.
2. explosion-proof stable type high-temperature molten salt heat collecting field as described in claim 1, which is characterized in that the bridge section connecting tube warp
High-temperature metal bellows is connect with the rotary joint.
3. explosion-proof stable type high-temperature molten salt heat collecting field as claimed in claim 2, which is characterized in that in the bridge section connecting tube
On be serially connected with tee tube, explosion rupture disk is provided on one of nozzle of tee tube, in the corresponding nozzle of explosion rupture disk
Lower section is provided with collecting tank.
4. explosion-proof stable type high-temperature molten salt heat collecting field as described in claim 1, which is characterized in that the rotary joint includes
Connecting outer cylinder and two inner cylinders, the inner cylinder includes that one end with what the high-temperature bellow was fixedly connected connects skirt, Gu
The butt-joint corrugated pipe for connecing the skirt other end is set calmly, and is fixed at the sealing ring of butt-joint corrugated pipe end, it is described
The sealing ring of two inner tubes keeps being set to the connection outer barrel in sealing contactly, it is described connect skirt respectively with connection
Outer cylinder is rotatably fixedly connected and sealing ring described in making two keeps predetermined pressure.
5. explosion-proof stable type high-temperature molten salt heat collecting field as claimed in claim 4, which is characterized in that connect shape on skirt in described
At there is positioning step, it is arranged with axle sleeve or bearing in the positioning step, the pressure being fixedly connected with the connection outer cylinder
Ring top, which is held, compresses two sealing rings on the bearing or axle sleeve.
6. explosion-proof stable type high-temperature molten salt heat collecting field as claimed in claim 4, which is characterized in that outside the connection outer cylinder
Portion or inside are provided with electric heater outside inner cylinder, and the connection outer cylinder bottom is provided with leakage salt mouth.
7. explosion-proof stable type high-temperature molten salt heat collecting field as claimed in claim 4, which is characterized in that the length of butt-joint corrugated pipe exists
30mm-80mm, rigidity are greater than 100N/mm, and the sealing ring is corresponding plane, slope surface or cambered surface sealing pair.
8. explosion-proof stable type high-temperature molten salt heat collecting field as described in claim 1, which is characterized in that in the cold tank and hot tank
It is respectively arranged with multipoint temperature sensor, probe-type temperature sensor is provided in the bridge section connecting tube to detect its tube wall
Temperature is provided with electric heating mechanism, the electric heating machine in the bridge section connecting tube and on the high-temperature bellow
Structure is the spaced electromagnetic heating coil of electric-heating belt or multistage wound on it, in the bridge section connecting tube and described
High-temperature bellow on be coated with insulating layer.
9. a kind of note salt method of such as described in any item explosion-proof stable type high-temperature molten salt heat collecting fields of claim 1-8, feature
It is, includes the following steps,
1) control valve, make to pump out from cold tank then ring be finally directly back to through Jing Chang cold tank flow path it is unimpeded,
2) temperature is detected, wherein pipeline and 300 DEG C of valve electric tracing or more, the electric heater of rotary joint is heated to 500 DEG C
Or more, 350 DEG C of joule heater or more of thermal-collecting tube, 350 DEG C of cold tank electric heater or more, the cold cold salt temperature 320 of tank
DEG C or more；
3) electric heater for closing rotary joint, starts cold salt pump, frequency is changed after running 30 seconds with low-limit frequency, if cold salt
Pump discharge gradually increases cold 1%/30s of pump frequency without flow indication, until limit value；If frequency adds to maximum frequency or volume
Frequency 65% is determined also without flow indication, stops cold salt pump, after flow transmitter or pressure transmitter have display, then with 3%/minute
Frequency increases, and flow is made to be gradually increased to minimum discharge, i.e. 60% metered flow；
4) cold salt cellar liquid level drop-out value, mirror field pipe temperature, pressure transmitter, temperature sensor, flow transmitter are monitored whether
Stablize；
5) occur after stablizing reflux, determine cold tank level stability and cold salt pump minimum discharge is kept to run, complete cold tank note salt.
10. note salt method as claimed in claim 9, which is characterized in that further include cold tank fused salt note in the step 1)
Enter step, first confirms that cold salt cellar ventilation is smooth, after temperature detection is qualified, sodium nitrate and potassium nitrate are thrown according to a certain percentage
Enter and inject cold tank from cold tank note salt mouth with pump after dissolving in lava stove, notices whether the cold tank liquid level of observation gradually goes up, if liquid level
Do not go up, stops note salt and check whether there is leakage, liquid level goes up to setting height in cold tank, starts cold salt pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710809225.5A CN109838934A (en) | 2017-09-10 | 2017-09-10 | Explosion-proof stable type high-temperature molten salt heat collecting field and note salt method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710809225.5A CN109838934A (en) | 2017-09-10 | 2017-09-10 | Explosion-proof stable type high-temperature molten salt heat collecting field and note salt method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109838934A true CN109838934A (en) | 2019-06-04 |
Family
ID=66875768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710809225.5A Pending CN109838934A (en) | 2017-09-10 | 2017-09-10 | Explosion-proof stable type high-temperature molten salt heat collecting field and note salt method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109838934A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109630678A (en) * | 2018-12-29 | 2019-04-16 | 航天神洁(北京)科技发展有限公司 | A kind of high temperature dynamic sealing device for flammable explosion hazard gases |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10341741A1 (en) * | 2003-09-08 | 2005-04-07 | Ritter Energie- Und Umwelttechnik Gmbh & Co. Kg | Solar appliance has collector with pump operated by control system with frost protection algorithm when collector temperature drops below set level |
| EP2216604A2 (en) * | 2009-02-10 | 2010-08-11 | Robert Bosch GmbH | Method and device for adjusting a solar fluid pressure in cables of a solar assembly and solar assembly |
| WO2011061333A1 (en) * | 2009-11-20 | 2011-05-26 | Huhnseal Ab | High temperature axial seal, system and method |
| DE102014208302B3 (en) * | 2014-05-02 | 2015-07-16 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Method for operating a solar thermal power plant and solar thermal power plant |
| CN105091333A (en) * | 2015-07-28 | 2015-11-25 | 上海电气集团股份有限公司 | Novel molten salt tank for heat storage |
| CN105545618A (en) * | 2014-10-31 | 2016-05-04 | 中广核太阳能开发有限公司 | Parabolic trough solar thermal power generation system and method utilizing fuse salt medium |
| CN107101396A (en) * | 2017-06-30 | 2017-08-29 | 天津滨海光热技术研究院有限公司 | The salt discharge collection device and salt discharge collection method of gravity salt discharge formula light field |
| CN207196963U (en) * | 2017-09-10 | 2018-04-06 | 甘肃光热发电有限公司 | Explosion-proof stable type high-temperature molten salt heat collecting field |
-
2017
- 2017-09-10 CN CN201710809225.5A patent/CN109838934A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10341741A1 (en) * | 2003-09-08 | 2005-04-07 | Ritter Energie- Und Umwelttechnik Gmbh & Co. Kg | Solar appliance has collector with pump operated by control system with frost protection algorithm when collector temperature drops below set level |
| EP2216604A2 (en) * | 2009-02-10 | 2010-08-11 | Robert Bosch GmbH | Method and device for adjusting a solar fluid pressure in cables of a solar assembly and solar assembly |
| WO2011061333A1 (en) * | 2009-11-20 | 2011-05-26 | Huhnseal Ab | High temperature axial seal, system and method |
| DE102014208302B3 (en) * | 2014-05-02 | 2015-07-16 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Method for operating a solar thermal power plant and solar thermal power plant |
| CN105545618A (en) * | 2014-10-31 | 2016-05-04 | 中广核太阳能开发有限公司 | Parabolic trough solar thermal power generation system and method utilizing fuse salt medium |
| CN105091333A (en) * | 2015-07-28 | 2015-11-25 | 上海电气集团股份有限公司 | Novel molten salt tank for heat storage |
| CN107101396A (en) * | 2017-06-30 | 2017-08-29 | 天津滨海光热技术研究院有限公司 | The salt discharge collection device and salt discharge collection method of gravity salt discharge formula light field |
| CN207196963U (en) * | 2017-09-10 | 2018-04-06 | 甘肃光热发电有限公司 | Explosion-proof stable type high-temperature molten salt heat collecting field |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109630678A (en) * | 2018-12-29 | 2019-04-16 | 航天神洁(北京)科技发展有限公司 | A kind of high temperature dynamic sealing device for flammable explosion hazard gases |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207196963U (en) | Explosion-proof stable type high-temperature molten salt heat collecting field | |
| CN109838934A (en) | Explosion-proof stable type high-temperature molten salt heat collecting field and note salt method | |
| CN101706094A (en) | Coaxial sleeve pipe type and groove type solar heat collection pipe module of single-layer glass pipe | |
| CN203127532U (en) | Large molten-salt storage tank device for heat storage system | |
| CN107191715A (en) | High temperature rotary joint | |
| CN107143707A (en) | Butt sealing formula high temperature pipe and dock swivel joint | |
| CN107290143B (en) | Testing device and testing method for high-temperature molten salt rotary joint | |
| CN102109231B (en) | Line focusing solar vacuum heat-collecting tube | |
| CN204553131U (en) | A kind of light coal complementary solar heat generating system | |
| CN206222716U (en) | It is a kind of can monitoring temperature solar energy heat collection pipe | |
| CN101666584A (en) | Finned pipe exchanger with copper-aluminum composite pipe for gas instantaneous water heater | |
| CN207196978U (en) | Stabilizing energy-saving type photo-thermal field | |
| CN206055984U (en) | A kind of photothermal conversion device | |
| CN207196972U (en) | Stepped ramp type gravity salt discharge formula heat collecting field | |
| CN206920124U (en) | The test device of high-temperature molten salt swivel joint | |
| CN207349642U (en) | High temperature rotary joint | |
| CN207349643U (en) | bellows with sealing function | |
| CN201615466U (en) | Coaxial sleeve groove type solar energy heat collecting pipe module of single-layered glass pipe | |
| CN207112163U (en) | Connect sleeve and high temperature rotary joint | |
| CN206918468U (en) | Butt sealing formula high temperature pipe and dock swivel joint | |
| CN208652946U (en) | A kind of disc type solar energy collecting system | |
| CN208154856U (en) | A kind of three hot composite volume formula solar heat absorbers | |
| CN206637869U (en) | Solar energy heat distribution system and utilize its solar power system | |
| CN106225264B (en) | A kind of photothermal conversion device and method | |
| CN207421591U (en) | Rotary joint and the heat collecting field with the rotary joint |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |