CN106782695B - Inhibit the pressure stabilizer rocked - Google Patents
Inhibit the pressure stabilizer rocked Download PDFInfo
- Publication number
- CN106782695B CN106782695B CN201611074736.9A CN201611074736A CN106782695B CN 106782695 B CN106782695 B CN 106782695B CN 201611074736 A CN201611074736 A CN 201611074736A CN 106782695 B CN106782695 B CN 106782695B
- Authority
- CN
- China
- Prior art keywords
- spacer
- cylinder
- under
- pressure stabilizer
- fixed
- 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.)
- Active
Links
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
- G21C15/02—Arrangements or disposition of passages in which heat is transferred to the coolant; Coolant flow control devices
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C13/00—Pressure vessels; Containment vessels; Containment in general
- G21C13/02—Details
-
- 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
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The present invention discloses a kind of pressure stabilizer for inhibiting to rock, including cylinder, the upper cover that is fixed on cylinder upper end, it is fixed on the low head of cylinder lower end and the spacer in cylinder and under spacer, spacer is in the tubular structure extended along the short transverse of cylinder under spacer, low head is fixed in the lower end of under spacer, spacer is fixed on above under spacer and is connected to under spacer, the radial dimension of spacer is more than the radial dimension of under spacer, and the upper end of spacer is opening-like.Voltage-stablizer inner space is separated into inside and outside two parts by upper and lower separator, to reduce space blade diameter length ratio, makes the more difficult generation of sloshing phenomenon；Fluid flow rate is limited radially simultaneously, protects chamber wall；Furthermore it is ensured that in voltage-stablizer level measuring precision.As it can be seen that the utility model voltage-stablizer is conducive to improve npp safety, reliability and economy.
Description
Technical field
The present invention relates to nuclear power plant's main cooling system technical field more particularly to a kind of voltage-stablizers.
Background technology
Voltage-stablizer is used in nuclear reactor primary Ioops, is the important composition device of nuclear power plant's main cooling system, in primary Ioops
When generation accident leads to pressure rise or reduces, automatically adjust pressure to primary Ioops, to ensure the normal work of primary Ioops
Make.
Environment residing for the nuclear power plant of sea base is harsher with respect to continental rise nuclear power plant, external in wind, wave and ocean current etc.
Under the influence of condition, carry nuclear power plant maritime floating platform or ship can run-off the straight, the movements such as rise and fall, wave.At this point,
The water surface in nuclear power plant's voltage-stablizer will appear nonlinear sloshing phenomenon, in this case, the water slug voltage stabilizing in voltage-stablizer
Device chamber wall causes voltage-stablizer inner wall different degrees of surge.When surge is bigger, sloshing phenomenon is possible to
Directly jeopardize the structural intergrity of voltage-stablizer.Meanwhile surge caused by rocking can produce the level measuring in voltage-stablizer
Raw significantly to influence, when occurring sloshing phenomenon in voltage-stablizer, the water level of measurement is higher or lower than actual water level, in this feelings
Under condition, water level control system frequent movement is caused, it could even be possible to leading to the false triggering of safety signal.In addition, working as sloshing phenomenon
It when comparing violent, is likely to occur exposed at the top of the heating rod in voltage-stablizer, causes heating rod that cannot cool down and burn in time.Such as
Fruit cannot effectively inhibit the sloshing phenomenon in voltage-stablizer, safety, reliability and the economy of nuclear power plant that will all drop significantly
It is low.
To improve safety, reliability and the economy of nuclear power plant, it is necessary to which providing a kind of can inhibit sloshing phenomenon
Voltage-stablizer.
Invention content
The purpose of the present invention is to provide a kind of voltage-stablizers that can inhibit sloshing phenomenon.
To achieve the goals above, inhibit the pressure stabilizer that rocks the present invention provides a kind of, including cylinder, be fixed on
The upper cover of cylinder upper end, the low head for being fixed on cylinder lower end and the spacer in cylinder and under spacer, on
Separator is in the tubular structure extended along the short transverse of cylinder under spacer, and lower envelope is fixed in the lower end of under spacer
Head, spacer are fixed on above under spacer and are connected to under spacer, and the radial dimension of spacer is more than under spacer
Radial dimension, the upper end of spacer is opening-like.
Compared with prior art, the present invention inhibits the pressure stabilizer rocked to has the following advantages：
One, the space that cooling water is accommodated in pressure stabilizer is divided within separator and separator by the separator of tubular
Except two parts.The blade diameter length ratio of known vessel is smaller, and liquid therein is just less susceptible to that sloshing phenomenon occurs, and by upper isolation
The two-part blade diameter length ratio that part, under spacer isolate is both less than the space not being spaced in existing voltage-stablizer, therefore this two
The probability at the scene of rocking is all lower in point, and the setting of separator effectively inhibits sloshing phenomenon.
Two, the presence of upper and lower separator limits the maximum flow rate that water in container radially flows, even if in severe ring
A degree of sloshing phenomenon is produced under the conditions of border, in pressure stabilizer, flow velocity radially is restricted, in this feelings
Under condition, impact force suffered by chamber wall makes the structure of pressure stabilizer be hardly damaged also than relatively limited.
Three, the entirety that spacer and under spacer form is the shape that upper end is big and lower end is small, this overall structure pair
The water of bottom plays the role of " suppressing " in pressure stabilizer, and pressure stabilizer bottom is made to be more difficult to sloshing phenomenon occur, it is ensured that
Even if in the case that exceedingly odious, the situation that the heating rod in pressure stabilizer bottom is all not in exposed is set, prevents from adding
Hot pin is burnt out.
Four, by inhibiting sloshing phenomenon, it is ensured that the water level measuring point in pressure stabilizer is unaffected, to improve water level
The precision of measurement.
To sum up, the pressure stabilizer that present invention inhibition is rocked can improve safety, reliability and the economy of nuclear power plant.
Preferably, the top of spacer is less than the normal work water level in pressure stabilizer.
Preferably, further including transition separator in hollow structure, the radial dimension of transition separator upper end is isolated on
The radial dimension of part is identical, and the radial dimension of transition separator lower end is identical as the radial dimension of under spacer, transition separator
Lower end be fixed on the upper end of under spacer, the upper end of transition separator is fixed in the lower end of spacer.
Preferably, low head is fixed with several heating rods in pressure stabilizer, several heating rods are arranged into several
Circle, the top of under spacer are higher than the top of heating rod, and the radial dimension of spacer is enclosed more than outermost heating rod
At circle.
Preferably, spacer is cylinder-like structure under spacer, the diameter of spacer is more than under spacer
Diameter.
Specifically, spacer and under spacer are in concentric setting with cylinder.
It is taken over preferably, low head is equipped with the Surge line piping being connected to inner barrel, under spacer is taken over Surge line piping and is connected to.
Specifically, under spacer is cylinder-like structure, and the diameter of under spacer is equal to the diameter that Surge line piping is taken over.
Preferably, the side wall of cylinder is provided with temperature point.
Preferably, the upper end of cylinder lateral wall is provided with water level measuring point, the lower end of cylinder lateral wall is provided with lower water level measuring point.
Description of the drawings
Fig. 1 is the sectional view of pressure stabilizer of the present invention.
Fig. 2 is the vertical view of pressure stabilizer.
Fig. 3 is the sectional view in pressure stabilizer directions A along Fig. 1.
Fig. 4 is the sectional view in pressure stabilizer directions B along Fig. 1.
Fig. 5 is schematic diagram when liquid rocks in voltage-stablizer.
Specific implementation mode
Description is made to presently preferred embodiments of the present invention with reference to the Figure of description provided.
In conjunction with shown in Fig. 1 to Fig. 4, the present invention provides a kind of pressure stabilizers 1 for inhibiting to rock, including cylindrical tube
11, the hemispheric low head 13 for being fixed on the hemispheric upper cover 12 of 11 upper end of cylinder, being fixed on 11 lower end of cylinder, and
Spacer 21, under spacer 22 in cylinder 11 and transition separator 23.
Be provided on upper cover 12 two safety valve connecting pipes 121, one be connected to the inside of cylinder 11 spray take overs 122 with
An and manhole 123 for personnel's disengaging.The spray head being connect with spray take over 122, spray are correspondingly arranged on inside upper cover 12
Take over 122 is drenched to fetch water from cold tube section, it is by spray head that the steam of the lower water spray of temperature to 1 internal upper part of pressure stabilizer is empty
Between.The Surge line piping take over 131 that the centre position setting one of low head 13 is connected to 11 inside of cylinder, pressure stabilizer 1 pass through wave
Dynamic pipe take over 131 connect with Surge line piping, and Surge line piping is connect with nuclear power plant primary Ioops.
The upper end of cylinder 11 is provided with several pressure-measuring-points 111 and several upper water level measuring points 112, several pressure-measuring-points
111 with several upper being circumferentially arranged rotating around cylinder 11 of water level measuring point 112, and the circle that wherein pressure-measuring-point 111 surrounds is located at upper
The top for the circle that water level measuring point 112 surrounds.The position of upper water level measuring point 112 is far above the normal work in pressure stabilizer 1
Water level C, and ensure that caused water-level fluctuation is rocked under the conditions of extreme external drive is also not achieved upper water level measuring point 112
Position.The lower end of cylinder 11 is provided with several temperature points 113 and several lower water level measuring points 114, several temperature points 113
With several lower being circumferentially arranged rotating around cylinder 11 of water level measuring point 114, the circle that wherein temperature point 113 surrounds is located at lower water level
The top for the circle that measuring point 114 surrounds, the position of lower water level measuring point 114 is as close to the bottom of cylinder 11.It is being embodied
When, pressure-measuring-point 111, upper water level measuring point 112, temperature point 113, lower water level measuring point 114 are all specifically to be opened in cylinder 11
On through-hole, size is related with applicable sensor.By differential pressure pickup respectively with upper water level measuring point 112 and lower water level
Measuring point 114 is connected, by the upper water level measuring point 112 of measurement and pressure in the pressure difference and pressure stabilizer 1 of lower water level measuring point 114,
Water temperature obtains the actual water level in pressure stabilizer 1.The quantity of above-mentioned various measuring points in the present embodiment is measured with disclosure satisfy that
Subject to demand, it might even be possible to only setting one.
Several heating rods 14 in cylinder 11 are fixed on low head 13, several heating rods 14 are arranged into several circles
Circle, specifically, the quantity of heating rod 14 is 16 in the present embodiment, wherein 8 heating rods 14 are arranged around the central axis of cylinder 11
Cloth is arranged into the circle of another diameter bigger around the central axis of cylinder 11 at a circle, in addition 8 heating rods 14.
Spacer 21 and under spacer 22 are in the cylinder extended along the short transverse of cylinder 11, spacer 21 it is straight
Diameter is more than the diameter of under spacer 22, and transition separator 23 is the hollow structure that outer profile is round platform, and on transition separator 23
The diameter at end is equal to the diameter of spacer 21, and the diameter of 23 lower end of transition separator is equal to the diameter of under spacer 22.Under every
The lower end of off member 22 is fixed on the middle position of low head 13 and is connected to Surge line piping take over 131, the lower end of transition separator 23
It is fixed on the upper end of under spacer 22, the upper end of transition separator 23 is fixed in the lower end of spacer 21, spacer 21
Upper end is opening-like.Spacer 21 is connected to by transition separator 23 under spacer 22.
In pressure stabilizer 1, spacer 21, under spacer 22 and transition separator 23 are all with cylinder 11 in coaxial
The heart is arranged.Also, the top of under spacer 22 is higher than the top of heating rod 14, and the diameter of spacer 21 is more than the heating of outer layer
The diameter for the circle that stick 14 is surrounded.The top of spacer 21 is less than the normal work water level C in pressure stabilizer 1.
Spacer 21, under spacer 22 and transition separator 23 be respectively adopted stainless steel molding after be welded into one it is whole
Body.The thickness of three separators need to ensure its mechanical strength under the conditions of rocking.
It is that the present invention inhibits different situations of the pressure stabilizer 1 rocked under different operating modes below：
1) when without external drive condition.
When nuclear power plant is in normal operating condition, the water level in pressure stabilizer 1 maintains normal work water level C, leads to
It crosses heating rod 14 to be heated to be saturated by the water in pressure stabilizer 1,1 top of pressure stabilizer is saturated vapor.Pass through heating rod
14 maintain primary Ioops pressure in normal operation pressure with the mode sprayed.Be not at this time sloshing phenomenon in pressure stabilizer 1.
The actual water level in pressure stabilizer 1 is obtained by differential pressure pickup, pressure sensor and temperature sensor, according to
1 pressure of pressure stabilizer, actual water level are controlled, and maintain primary Ioops pressure and 1 water level of pressure stabilizer in normal operation model
In enclosing.
2) when nuclear power plant is in the normal operating condition under the conditions of external drive.
Under the conditions of external drive, pressure stabilizer 1 is moved with floating platform or ship, at this point, in upper isolation
Part 21 is under the action of under spacer 22, and fluctuation by a small margin occurs for the water level in pressure stabilizer 1, as shown in Figure 4.It is novel steady
Upper water level measuring point 112, lower water level measuring point 114 will not be influenced by the condition of rocking in depressor 1, by monitoring pressure stabilizer
1 water level ensures that nuclear power plant is in safe operation state.
3) primary Ioops water filling process.
When needing to carry out water-filling to primary Ioops system, water in Surge line piping from entering in pressure stabilizer 1, in this mistake
Under spacer 22 in journey, the water level in spacer 21 are first begin to rise；When water level rises to 21 top of spacer, after
Continuous water-filling, water flow downwardly into 1 bottom of pressure stabilizer along spacer 21, until water level rises to the top outside spacer 21
Portion；Hereafter continue water-filling, until water level reaches the water level of needs, stopping water-filling.
Compared with prior art, the present invention inhibits the pressure stabilizer 1 rocked to has the following advantages：
One, the space that cooling water is accommodated in pressure stabilizer 1 is divided within separator and is isolated by the separator of tubular
Two parts except part.The blade diameter length ratio of known vessel is smaller, and liquid therein is just less susceptible to that sloshing phenomenon occurs, and by upper isolation
The two-part blade diameter length ratio that part 21, under spacer 22 isolate is both less than original space not being spaced in pressure stabilizer 1, because
The probability at the scene of being rocked in this this two parts is all lower, and the setting of separator effectively inhibits sloshing phenomenon.
Two, the presence of separator limits the maximum flow rate that water in container radially flows, even if in rugged environment item
Under part, a degree of sloshing phenomenon is produced in pressure stabilizer 1, flow velocity radially is restricted, in such case
Under, impact force suffered by chamber wall makes the structure of pressure stabilizer 1 be hardly damaged also than relatively limited.
Three, spacer 21 is tied with the shape that the entirety that under spacer 22 forms is that upper end is big and lower end is small, this entirety
Structure plays the role of " suppressing " to the cooling water of bottom in pressure stabilizer 1, and 1 bottom of pressure stabilizer is made to be more difficult to rock
Phenomenon, it is ensured that even if in the case that exceedingly odious, the heating rod 14 positioned at 1 bottom of pressure stabilizer is all not in exposed feelings
Condition prevents heating rod 14 from burning out.
Four, by inhibiting sloshing phenomenon, it is ensured that the water level measuring point in pressure stabilizer 1 is unaffected, to improve water
The precision that position measures.
Five, the present invention inhibits separator in the pressure stabilizer 1 rocked to be arranged in bottom, will not be pushed up to pressure stabilizer 1
The spray system in portion impacts, and will not influence the heat exchange between shower water and steam.
The present invention inhibits the maintenance of the pressure stabilizer 1 rocked with reference to the attended operation of common voltage-stablizer, also needs in addition
Upper and lower separator is detected, such as burn into weld integrality.
Above disclosed is only the preferred embodiments of the present invention, effect be it is convenient it will be understood by those skilled in the art that
And implement according to this, of course, the scope of rights of the present invention cannot be limited by this, therefore according to made by scope of the present invention patent
Equivalent variations still fall within the range that the present invention is covered.
Claims (10)
1. a kind of pressure stabilizer for inhibiting to rock, it is characterised in that：Including cylinder, it is fixed on the upper envelope of the cylinder upper end
Head, the low head and the spacer in the cylinder and under spacer for being fixed on the cylinder lower end, it is described on every
Off member is in the tubular structure extended along the short transverse of the cylinder under spacer, and the lower end of the under spacer is fixed on
The low head, the spacer are fixed on above the under spacer and are connected to the under spacer, the upper isolation
The radial dimension of part is more than the radial dimension of the under spacer, and the upper end of the spacer is opening-like.
2. pressure stabilizer as described in claim 1, it is characterised in that：The top of the spacer is novel steady less than described
Normal work water level in depressor.
3. pressure stabilizer as described in claim 1, it is characterised in that：Further include transition separator in hollow structure, institute
The radial dimension for stating transition separator upper end is identical as the radial dimension of the spacer, the diameter of transition separator lower end
Identical as the radial dimension of the under spacer to size, the upper of the under spacer is fixed in the lower end of the transition separator
End, the upper end of the transition separator is fixed in the lower end of the spacer.
4. pressure stabilizer as described in claim 1, it is characterised in that：The low head is fixed with positioned at the novel voltage stabilizing
Several heating rods in device, several heating rods are arranged into several circles, and the top of the under spacer is higher than the heating
The radial dimension at the top of stick, the spacer is more than the circle that the outermost heating rod is surrounded.
5. pressure stabilizer as described in claim 1, it is characterised in that：The spacer and under spacer are cylindrical shape
Structure, the diameter of the spacer are more than the diameter of the under spacer.
6. pressure stabilizer as claimed in claim 5, it is characterised in that：The spacer and under spacer with the cylinder
Body is in concentric setting.
7. pressure stabilizer as described in claim 1, it is characterised in that：The low head is equipped with and is connected to the inner barrel
Surge line piping take over, the under spacer is taken over the Surge line piping and is connected to.
8. pressure stabilizer as claimed in claim 7, it is characterised in that：The under spacer is cylinder-like structure, and described
The diameter of under spacer is equal to the diameter that the Surge line piping is taken over.
9. pressure stabilizer as described in claim 1, it is characterised in that：The side wall of the cylinder is provided with temperature point.
10. pressure stabilizer as described in claim 1, it is characterised in that：The upper end of the cylinder lateral wall is provided with water level
The lower end of measuring point, the cylinder lateral wall is provided with lower water level measuring point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611074736.9A CN106782695B (en) | 2016-11-29 | 2016-11-29 | Inhibit the pressure stabilizer rocked |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611074736.9A CN106782695B (en) | 2016-11-29 | 2016-11-29 | Inhibit the pressure stabilizer rocked |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106782695A CN106782695A (en) | 2017-05-31 |
| CN106782695B true CN106782695B (en) | 2018-10-16 |
Family
ID=58900657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611074736.9A Active CN106782695B (en) | 2016-11-29 | 2016-11-29 | Inhibit the pressure stabilizer rocked |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106782695B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109559834A (en) * | 2017-09-26 | 2019-04-02 | 国家电投集团科学技术研究院有限公司 | Stable-pressure device and stable-pressure device group for nuclear reactor |
| CN108801396B (en) * | 2018-05-08 | 2019-11-15 | 中广核研究院有限公司 | Voltage-stablizer and liquid level emasuring device for maritime floating platform voltage-stablizer |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206619403U (en) * | 2016-11-29 | 2017-11-07 | 中广核研究院有限公司 | Suppress the pressure stabilizer rocked |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013164340A (en) * | 2012-02-10 | 2013-08-22 | Hitachi-Ge Nuclear Energy Ltd | Jet pump |
| CN105059777A (en) * | 2015-08-11 | 2015-11-18 | 中船圣汇装备有限公司 | Swash plate structure suitable for movable type low-temperature liquid storage tank device |
| CN106024074A (en) * | 2016-05-11 | 2016-10-12 | 中广核研究院有限公司 | Nuclear power plant voltage stabilizer for inhibiting liquid level sloshing |
| CN105957565B (en) * | 2016-06-23 | 2018-05-29 | 中广核研究院有限公司 | Constrain pond and the containment with the constrain pond |
-
2016
- 2016-11-29 CN CN201611074736.9A patent/CN106782695B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206619403U (en) * | 2016-11-29 | 2017-11-07 | 中广核研究院有限公司 | Suppress the pressure stabilizer rocked |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106782695A (en) | 2017-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106782680B (en) | Inhibit the new structure of sloshing phenomenon in voltage-stablizer | |
| CN102282628B (en) | Reactor vessel coolant deflector shield | |
| CN106782695B (en) | Inhibit the pressure stabilizer rocked | |
| CN107210070B (en) | The cooling and closed system of water cooling, water-moderated reactor reactor core fusant | |
| CN206619397U (en) | Suppress the new structure of sloshing phenomenon in voltage-stablizer | |
| CN105047235A (en) | Melt in-pile retention passive cooling system in nuclear reactor severe accident state | |
| CN106098121B (en) | Gas-liquid runner pipe and containment | |
| CN206619403U (en) | Suppress the pressure stabilizer rocked | |
| CN204141244U (en) | Temperature measuring equipment and vessel | |
| CN106653100B (en) | Nuclear power floating platform and the pressure stabilizer that sloshing phenomenon can be inhibited | |
| CN108801396B (en) | Voltage-stablizer and liquid level emasuring device for maritime floating platform voltage-stablizer | |
| CN108346476A (en) | Reactor and divide pot type voltage-stablizer | |
| CN106287623A (en) | Phase-change heat-storage steam accumulator | |
| Yu et al. | Experimental investigation of pressure fluctuation and steam transport under SGTR accident in Lead-cooled Fast Reactors | |
| CN103076820A (en) | Experimental device suitable for solid-phase oxygen control reaction | |
| CN208027759U (en) | Reactor and divide pot type voltage-stablizer | |
| JP2010522318A (en) | Pressurizer for pressurized water nuclear power plant | |
| CN107806917B (en) | High-precision mica fluviograph | |
| CN206740213U (en) | A kind of difunctional magnetic double level gauge of weatherable | |
| US9892806B2 (en) | Space saver flanged joint for a nuclear reactor vessel | |
| CN109186719A (en) | Heavy oil floating bed hydrocracking high-temperature high-voltage reaction device electromagnetism level gauging device | |
| CN104111271B (en) | A kind of non-uniform temperature measurement apparatus of marine vapor thermophore | |
| CN104810066A (en) | Pressure container with fins on outer wall surface | |
| CN209587461U (en) | A kind of pipeline effusion discharging device | |
| CN108387287B (en) | Float-type high-temperature sodium-potassium alloy liquid level meter |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |