CN115440399A - Damper test body structure suitable for multi-geometric-parameter combination research of novel safety injection box - Google Patents
Damper test body structure suitable for multi-geometric-parameter combination research of novel safety injection box Download PDFInfo
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- CN115440399A CN115440399A CN202211127251.7A CN202211127251A CN115440399A CN 115440399 A CN115440399 A CN 115440399A CN 202211127251 A CN202211127251 A CN 202211127251A CN 115440399 A CN115440399 A CN 115440399A
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- 238000012360 testing method Methods 0.000 title claims abstract description 72
- 238000002347 injection Methods 0.000 title claims abstract description 45
- 239000007924 injection Substances 0.000 title claims abstract description 45
- 238000011160 research Methods 0.000 title claims abstract description 31
- 210000005239 tubule Anatomy 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 2
- 230000013011 mating Effects 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000011161 development Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 2
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 239000002826 coolant Substances 0.000 description 4
- 238000004401 flow injection analysis Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 206010013647 Drowning Diseases 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
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- 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
- G21C15/18—Emergency cooling arrangements; Removing shut-down heat
Abstract
The invention discloses a damper test body structure suitable for multi-geometric-parameter combination research of a novel safety injection box. According to the damper test body structure, the plurality of groups of large pipes and small pipes with different geometric parameters are arranged on the vortex chamber, so that the development of a damper pressure drop characteristic research test with different geometric parameter combinations on the same damper can be facilitated, the frequent preparation and replacement of different dampers with different geometric parameters are not required, the operation is flexible and convenient, and the test time and the manufacturing cost of the test damper are greatly saved; in addition, the coupling between the joint and the loop is realized through a combined structure of the mating flange and the hose short circuit, the connection and the disassembly between the large and small pipes with different geometric parameters and the loop can be quickly realized, the replacement of the combination of different large and small pipes in the test process is convenient, and the test time can be effectively shortened.
Description
Technical Field
The invention relates to the technical field of nuclear reactor safety related test research equipment, in particular to a damper test body structure suitable for multi-geometric parameter combination research of a novel safety injection box.
Background
The pressurized water reactor nuclear power plant is equipped with special safe injection system, and its function can provide emergent and continuous cooling for the reactor core rapidly when the loss of coolant accident, derives the reactor core waste heat, prevents that the reactor core from damaging. The safety injection system must be able to intervene under different pressure conditions according to the pressure drop variation of the primary circuit system caused by an accident. The safety injection tank inserted in a medium-pressure state needs to provide large-flow injection in a short time under the condition that a primary pipeline is broken to cause sudden pressure reduction. The low pressure safety injection system, which intervenes in the low pressure regime, needs to be activated immediately after the safety tank is filled to provide the required low flow injection to ensure core re-flooding. If the low-pressure safety injection system cannot be started in time, the reactor core cannot be effectively cooled, and a serious accident of reactor core melting is caused. In the loss of coolant accident submergence stage, namely low pressure safety injection system input initial stage, the safety injection flow that traditional safety injection case provided is still great, has surpassed the required cooling flow of drowning stage reactor core far away for most coolant flows out from the breach, causes the waste of coolant, has increased system's load in the intangible.
The novel safety injection box can automatically transit to a low-flow injection stage after high-flow injection, the effect of the novel safety injection box is the same as the injection characteristic of a low-pressure safety injection system at the initial input stage, the function of the traditional safety injection box can be realized, a long wide-range time can be obtained to start the low-pressure safety injection system, and the low-pressure safety injection system can be further cancelled. The method not only simplifies the system, reduces active safety facilities, but also avoids misoperation possibly caused by human intervention and improves the safety.
The novel safety injection box is different from the traditional safety injection box and is characterized in that a damper is additionally arranged inside the novel safety injection box, at present, the damper in the novel safety injection box consists of a vortex chamber and a pair of large/small tubes, so that when different geometric parameters such as the width of the large tube and the small tube and the influence of included angles between the large tube and the small tube on the pressure drop characteristic of the novel safety injection box damper are researched, different dampers with different geometric parameters need to be replaced for testing, repeated replacement and installation of different dampers are required for each test, the operation steps are complicated, the testing efficiency is low, a large amount of testing time is wasted, meanwhile, various dampers with different geometric parameters need to be manufactured, and the cost of test consumables is increased relatively.
In view of this, the present application is specifically proposed.
Disclosure of Invention
The invention aims to provide a damper test body structure suitable for multi-geometric parameter combination research of a novel safety injection box, combines various large and small tubes with different geometric parameters on the same damper test body, can quickly realize the damper pressure drop characteristic research of different geometric parameter combinations, is flexible and convenient to operate, saves time and cost during test, does not need to prepare dampers with various geometric parameters, and saves economic cost.
The invention is realized by the following technical scheme:
the invention provides a damper test body structure suitable for multi-geometric-parameter combination research of a novel safety injection box.
According to the damper test body structure, multiple groups of large pipes and small pipes with different geometric parameters are arranged on one vortex chamber, the development of a damper pressure drop characteristic research test with different geometric parameter combinations on the same damper can be facilitated, different dampers do not need to be frequently replaced, and the test time and the manufacturing cost of the test damper are greatly saved.
Furthermore, 3 pairs of large pipes and small pipes are uniformly arranged in the circumferential direction of the vortex chamber, so that three large pipes and small pipes with different geometric parameters can be combined on the same damper test body to carry out a test, the economy can be ensured, and the large pipes and the small pipes in each pair are not interfered with each other and are not crossed.
Further, the geometric parameters comprise the width of the large pipe, the width of the small pipe, the included angle between the large pipe and the small pipe, and the included angle between the small pipe and the vortex chamber. Specifically, the selection of the geometric parameters of each group of large tubes and small tubes and the setting of the numerical values of the specific geometric parameters are designed according to the test requirements.
Furthermore, special-shaped joints are arranged at the end parts of the large pipe and the small pipe to ensure that the flow velocity of fluid entering the large pipe and the small pipe through the special-shaped joints is uniform.
Further, the length of the special-shaped joint is not less than 10 times of the hydraulic diameter of the large pipe or the small pipe, so that the flow speed of the inlet section of the damper is fully developed.
The special-shaped joint is characterized by further comprising a standard flange and a companion flange, wherein one end of the special-shaped joint is square and is welded with the large pipe or the small pipe, the other end of the special-shaped joint is round and is welded with the standard flange, and the companion flange is detachably connected with the standard flange.
Further, a hose short circuit is installed at the position of the communication pipeline of the companion flange, and the hose short circuit is used for connecting and installing the test body and the test loop.
Furthermore, the blind flange is detachably arranged on the standard flange, and when a pair of large pipes and small pipes or an inlet pipe is required to be researched, other large pipes and small pipes can be used for sealing the pipeline by mounting the blind flange.
The specific installation structure of the damper test body structure provided by the invention is as follows:
firstly, uniformly arranging three large pipes and small pipes with different geometric parameters (large pipe width, small pipe width and large pipe clamp angle) at the periphery of a vortex chamber, and ensuring that each pair of large pipe and small pipe combination is not interfered and crossed; secondly, welding corresponding special-shaped joints at the end parts of the large pipe and the small pipe, wherein the length of the special-shaped joints has certain requirements, and ensuring that the flow velocity is uniform after fluid enters the large pipe and the small pipe; one end of the special-shaped joint is square and is welded with the large pipe or the small pipe, and the other end of the special-shaped joint is round and is welded with the standard flange; a set of companion flanges and hose short circuits are arranged in the whole structure, then the companion flanges are welded with the hose short circuits, and the hose short circuits are used for being installed on loop pipelines.
When a certain group of small tubes need to be researched, the mating flange and the hose short circuit are installed on the standard flange of the group of small tubes, the standard flanges of other small tubes are blinded by blind flanges, and then after the position of the damper test body is changed, the connection and installation of the body and the loop can be quickly finished because the loop part is connected by the hose short circuit; when another group of large and small tubes need to be researched, the mating flange and the hose short joint are disassembled and installed on the corresponding large and small tubes, so that the pressure drop characteristic research of dampers with different geometric parameter combinations is realized, the operation is flexible and convenient, the economic cost is saved during design and manufacture, and the time cost is saved during testing.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. according to the damper test body structure suitable for multi-geometric-parameter combination research of the novel safety injection box, multiple groups of large pipes and small pipes with different geometric parameters are configured on one vortex chamber, development of a damper pressure drop characteristic research test of different geometric-parameter combinations on the same damper can be facilitated, the dampers with different geometric parameters do not need to be prepared, different dampers do not need to be frequently replaced, operation is flexible and convenient, and test time and manufacturing cost of the test damper are greatly saved;
2. the damper test body structure suitable for the multi-geometric-parameter combination research of the novel safety injection box provided by the embodiment of the invention is characterized in that 3 groups of large pipes and small pipes with different geometric parameters are configured on a vortex chamber, and each pair of large pipes and small pipes can be ensured not to interfere with each other and not to cross each other;
3. according to the damper test body structure suitable for multi-geometric-parameter combination research of the novel safety injection box, the special-shaped joint is arranged between the large pipe and the small pipe and the loop, so that the flow velocity of the inlet section of the damper is fully developed, and the pressure drop of the loop is reduced;
4. according to the damper test body structure suitable for multi-geometric-parameter combination research of the novel safety injection box, the connection between the joint and the loop is realized through the combined structure of the mating flange and the hose short joint, the connection and the disassembly between the large and small pipes with different geometric parameters and the loop can be quickly realized, the combination of the large and small pipes with different geometric parameters can be conveniently replaced in the test process, and the test time can be effectively shortened;
5. according to the damper test body structure suitable for multi-geometric-parameter combination research of the novel safety injection box, the connecting pipeline of the companion flange is in short connection with the hose, so that the included angle of a loop pipeline can be flexibly changed to meet the requirements of different included angles of large and small pipes when the positions of the test body are adjusted and changed in combination of the pipes with different sizes, and the test time is saved.
Drawings
In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and that for those skilled in the art, other related drawings can be obtained from these drawings without inventive effort.
Fig. 1 is a schematic structural diagram of a damper test body provided in an embodiment of the present invention.
Reference numerals and corresponding part names:
1-is a vortex chamber, 2-is a large pipe, 3-is a small pipe, 4-is a special-shaped joint, 5-is a blind flange, 6-is a mating flange, and 7-is a hose short joint.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to one of ordinary skill in the art that: it is not necessary to employ these specific details to practice the present invention. In other instances, well-known structures, materials, or methods are not specifically described in order to avoid obscuring the present invention.
Throughout the specification, reference to "one embodiment," "an embodiment," "one example," or "an example" means: the particular features, structures, or characteristics described in connection with the embodiment or example are included in at least one embodiment of the invention. Thus, the appearances of the phrase "one embodiment," "an embodiment," "one example" or "an example" in various places throughout this specification are not necessarily all referring to the same embodiment or example. Furthermore, the particular features, structures, or characteristics may be combined in any suitable combination and/or sub-combination in one or more embodiments or examples. Further, those of ordinary skill in the art will appreciate that the illustrations provided herein are for illustrative purposes and are not necessarily drawn to scale. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In the description of the present invention, the terms "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "upper", "lower", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore, should not be construed as limiting the scope of the present invention.
At present, the attenuator in the novel safety injection box comprises vortex chamber and a pair of big pipe/tubule, consequently when studying different geometric parameters such as the width of big pipe and tubule, contained angle between big pipe and the tubule isoparametric to the influence of novel safety injection box attenuator to pressure drop characteristic, need change different attenuators that have different geometric parameters and test, this just leads to at every turn experimental repeated change of needs and installs different attenuators, the complex and complicated of operating procedure, test efficiency is low, waste a large amount of test time, still need make multiple attenuator that has different geometric parameters simultaneously, consequently, from the relative increase of test consumptive material cost. In order to solve the problems, the invention provides a novel damper body structure, which can realize the function of carrying out the experimental study on the pressure drop characteristics of a plurality of groups of dampers with different geometric parameters on one set of body and has the characteristics of flexibility, convenience, complete functions, economy, saving and the like.
Example 1
The embodiment of the invention provides a damper test body structure suitable for multi-geometric-parameter combination research of a novel safety injection box, which comprises a vortex chamber 1, wherein a plurality of pairs of large pipes 2 and small pipes 3 with different geometric parameters are uniformly arranged along the circumferential direction of the vortex chamber 1.
According to the damper test body structure, multiple groups of large pipes and small pipes with different geometric parameters are arranged on one vortex chamber, the development of a damper pressure drop characteristic research test with different geometric parameter combinations on the same damper can be facilitated, different dampers do not need to be frequently replaced, and the test time and the manufacturing cost of the test damper are greatly saved.
Preferably, 3 pairs of large pipes 2 and small pipes 3 are uniformly arranged in the circumferential direction of the vortex chamber 1, so that three large pipes and small pipes with different geometric parameters can be combined on the same damper test body to carry out a test, the economy can be ensured, and the large pipes 2 and the small pipes 3 in each pair are not interfered with each other and are not crossed.
Preferably, the geometric parameters include the width B of the large tube 2, the width B of the small tube 3, the included angle θ between the large tube 2 and the small tube 3, and the included angle between the small tube 3 and the swirl chamber 1. The selection of the geometrical parameters of each group of large tubes 2 and small tubes 3 and the setting of the values of the specific geometrical parameters are designed according to the test requirements.
Preferably, the ends of the large pipe 2 and the small pipe 3 are both provided with special-shaped joints 4, and the length of the special-shaped joints is not less than 10 times of the hydraulic diameter of the large pipe or the small pipe, so that the flow velocity of the inlet section of the damper is fully developed, and the flow velocity of fluid entering the large pipe 2 and the small pipe 3 through the special-shaped joints 4 is uniform.
Preferably, the special-shaped connector comprises a standard flange and a counter flange 6, one end of the special-shaped connector 4 is square and is welded with the large pipe 2 or the small pipe 3, the other end of the special-shaped connector is round and is welded with the standard flange, and the counter flange 6 is detachably connected with the standard flange.
Preferably, a hose short circuit 7 is installed at the communicating pipeline of the companion flange 6, and the hose short circuit 7 is used for connecting and installing the test body and the test loop.
Preferably, the blind flange 5 is further included, the blind flange 5 is used for being detachably mounted on a standard flange, and when a certain pair of large pipes and small pipes or a certain inlet pipe needs to be researched, other large pipes and small pipes can be sealed by mounting the blind flange 5.
Example 2
The embodiment of the invention provides a damper test body structure suitable for multi-geometric-parameter combination research of a novel safety injection box, which comprises swirl chambers 1 and 3 groups of large pipes 2 and small pipes 3 with different geometric parameters, 6 special-shaped joints 4, 6 blind flanges 5, a group of companion flanges 6 and a hose short circuit 7, wherein each large pipe 2 and each small pipe 3 are respectively provided with one special-shaped joint 4, the special-shaped joints are provided with two types of specifications and are respectively matched with the large pipes 2 and the small pipes 3, and each special-shaped joint 4 is provided with a standard flange with matched size; the mating flange and the hose short joint are also provided with two types and specifications for being in adaptive connection with the special-shaped joint standard flanges of the large pipe and the small pipe.
Firstly, three large pipes 2 and small pipes 3 with different geometric parameters (large pipe width B, small pipe width B and large pipe clamp angle theta) are combined and uniformly arranged on the periphery of a vortex chamber 1, so that each pair of large pipe 2 and small pipe 3 is ensured not to interfere and intersect; secondly, welding a corresponding special-shaped joint 4 at the end part of each large pipe 2 and each small pipe 3, wherein the length of the special-shaped joint 4 has certain requirement, and the length of the special-shaped joint is not less than 10 times of the hydraulic diameter of the large pipe or the small pipe, so that the sufficient development of the flow velocity of the inlet section of the damper is ensured, and the uniform flow velocity of fluid after entering the large pipe 2 and the small pipe 3 is ensured; one end of the special-shaped joint is square and is welded with the large pipe 2 or the small pipe 3, and the other end of the special-shaped joint is round and is welded with a standard flange; the whole structure is provided with a group of companion flanges 6 and hose short circuits 7, then the companion flanges 6 are welded with the hose short circuits 7, and the hose short circuits 7 are used for being mounted to a loop pipeline.
When a certain group of small tubes need to be researched, the mating flange and the hose short circuit are installed on the standard flange of the group of small tubes, the standard flanges of other small tubes are blinded by blind flanges, and then after the position of the damper test body is changed, the connection and installation of the body and the loop can be quickly finished because the loop part is connected by the hose short circuit; when another group of large and small pipes need to be researched, the mating flange and the hose short joint are disassembled and installed on the corresponding large and small pipes, so that the research on the pressure drop characteristics of the damper with different geometric parameter combinations is realized, the operation is flexible and convenient, the economic cost is saved during design and manufacture, and the time cost is saved during test.
The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only examples of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The utility model provides a damper test body structure suitable for many geometric parameters of novel safety injection case combination research which characterized in that, includes vortex chamber (1), evenly is provided with many pairs of big pipe (2) and tubule (3) that have different geometric parameters along the circumferential direction of vortex chamber (1).
2. The damper test body structure suitable for the multi-geometric-parameter combination research of the novel safety injection box is characterized in that 3 pairs of large pipes (2) and small pipes (3) are uniformly arranged in the circumferential direction of the vortex chamber (1).
3. The damper test body structure suitable for the multi-geometric-parameter combination research of the novel safety injection box is characterized in that the geometric parameters comprise the width of a large pipe (2), the width of a small pipe (3), the included angle between the large pipe (2) and the small pipe (3), and the included angle between the small pipe (3) and a swirl chamber (1).
4. The damper test body structure suitable for the multi-geometric-parameter combination research of the novel safety injection box is characterized in that the ends of the large pipe (2) and the small pipe (3) are provided with special-shaped joints (4).
5. The damper test body structure suitable for the multi-geometric-parameter combination research of the novel safety injection box is characterized in that a standard flange is mounted on the special-shaped joint (4).
6. The damper test body structure suitable for the multi-geometric-parameter combination research of the novel safety injection box is characterized in that one end of the special-shaped joint (4) is square and is welded with a large pipe or a small pipe, and the other end of the special-shaped joint is circular and is welded with a standard flange.
7. The damper test body structure suitable for multi-geometric-parameter combination research of a novel safety injection box is characterized by further comprising a companion flange (6), wherein the companion flange (6) is detachably connected with a standard flange.
8. The damper test body structure suitable for the multi-geometric-parameter combination research of the novel safety injection tank is characterized in that a hose short-circuit (7) is installed at a communication pipeline of a companion flange (6).
9. The damper test body structure suitable for the multi-geometric-parameter combination research of the novel safety injection box is characterized by further comprising a blind flange (5), wherein the blind flange (5) is detachably arranged on a standard flange.
10. The damper test body structure suitable for the multi-geometric-parameter combination research of the novel safety injection box is characterized in that the length of the special-shaped joint is not less than 10 times of the hydraulic diameter of a large pipe or a small pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211127251.7A CN115440399A (en) | 2022-09-16 | 2022-09-16 | Damper test body structure suitable for multi-geometric-parameter combination research of novel safety injection box |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211127251.7A CN115440399A (en) | 2022-09-16 | 2022-09-16 | Damper test body structure suitable for multi-geometric-parameter combination research of novel safety injection box |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04328494A (en) * | 1991-04-26 | 1992-11-17 | Mitsubishi Heavy Ind Ltd | Accumulator |
| US20120281802A1 (en) * | 2010-03-18 | 2012-11-08 | Mitsubishi Heavy Industries, Ltd. | Emergency system |
| CN104051031A (en) * | 2013-03-12 | 2014-09-17 | 中科华核电技术研究院有限公司 | Hydraulic component of accumulator safety injection water tank and accumulator safety injection water tank |
| CN109448873A (en) * | 2018-12-04 | 2019-03-08 | 中国核动力研究设计院 | A kind of modified safety injection tank |
| CN212720382U (en) * | 2020-05-09 | 2021-03-16 | 青岛海尔空调器有限总公司 | Debugging assembly |
| CN114582531A (en) * | 2022-03-03 | 2022-06-03 | 上海核工程研究设计院有限公司 | Advanced passive safety injection system with flow control function |
| CN114995528A (en) * | 2022-04-19 | 2022-09-02 | 中国核电工程有限公司 | Passive flow control equipment |
-
2022
- 2022-09-16 CN CN202211127251.7A patent/CN115440399A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04328494A (en) * | 1991-04-26 | 1992-11-17 | Mitsubishi Heavy Ind Ltd | Accumulator |
| US20120281802A1 (en) * | 2010-03-18 | 2012-11-08 | Mitsubishi Heavy Industries, Ltd. | Emergency system |
| CN104051031A (en) * | 2013-03-12 | 2014-09-17 | 中科华核电技术研究院有限公司 | Hydraulic component of accumulator safety injection water tank and accumulator safety injection water tank |
| CN109448873A (en) * | 2018-12-04 | 2019-03-08 | 中国核动力研究设计院 | A kind of modified safety injection tank |
| CN212720382U (en) * | 2020-05-09 | 2021-03-16 | 青岛海尔空调器有限总公司 | Debugging assembly |
| WO2021227543A1 (en) * | 2020-05-09 | 2021-11-18 | 青岛海尔空调器有限总公司 | Debugging assembly |
| CN114582531A (en) * | 2022-03-03 | 2022-06-03 | 上海核工程研究设计院有限公司 | Advanced passive safety injection system with flow control function |
| CN114995528A (en) * | 2022-04-19 | 2022-09-02 | 中国核电工程有限公司 | Passive flow control equipment |
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| Title |
|---|
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