JPH0316515B2 - - Google Patents
Info
- Publication number
- JPH0316515B2 JPH0316515B2 JP57031675A JP3167582A JPH0316515B2 JP H0316515 B2 JPH0316515 B2 JP H0316515B2 JP 57031675 A JP57031675 A JP 57031675A JP 3167582 A JP3167582 A JP 3167582A JP H0316515 B2 JPH0316515 B2 JP H0316515B2
- Authority
- JP
- Japan
- Prior art keywords
- pump
- liquid level
- regulating valve
- plenum
- valve
- 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.)
- Expired - Lifetime
Links
- 239000007788 liquid Substances 0.000 claims description 44
- 230000001105 regulatory effect Effects 0.000 claims description 22
- 238000005192 partition Methods 0.000 claims description 16
- 239000012530 fluid Substances 0.000 claims description 9
- 238000012544 monitoring process Methods 0.000 claims description 8
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 14
- 229910052708 sodium Inorganic materials 0.000 description 14
- 239000011734 sodium Substances 0.000 description 14
- 238000013461 design Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 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
- Y02E30/00—Energy generation of nuclear origin
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
【発明の詳細な説明】
［産業上の利用分野］
この発明は、自由液面型機械式ポンプに関する
もので、特に大型高速中性子増殖炉（FBR）プ
ラントの主循環ポンプとして使用されている自由
液面型機械式ポンプの液面調整技術に関するもの
である。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a free liquid level mechanical pump, and in particular to a free liquid level mechanical pump used as a main circulation pump in a large fast neutron breeder reactor (FBR) plant. This paper relates to liquid level adjustment technology for surface-type mechanical pumps.
［従来の技術］
高速増殖炉における従来の液面調整技術として
は、例えば、第１図及び第２図のものが知られて
おり、これは特開昭50−121695明細書に開示され
ている。[Prior Art] As a conventional liquid level adjustment technique in a fast breeder reactor, for example, the one shown in FIGS. .
この従来技術を図面を参照し、詳しく説明する
と、液体金属例えば液体ナトリウムは原子炉容器
２０の炉心部２１の熱で加熱され、加熱されたナ
トリウムは中間熱交換器２２に入り、その伝熱管
部２４で二次冷却系（図示していない）のナトリ
ウムにより冷却される。次いで管路３０によりポ
ンプ２５に至り、再び原子炉容器２０に入る。そ
の際ポンプ内で加圧されたナトリウムの一部は液
位計２８の信号によりポンプ上部から漏洩処理ラ
イン２９の途中に設けられた弁２３の開度を変え
ることにより流量調節されて管路３０に戻され
る。 To explain this conventional technology in detail with reference to the drawings, liquid metal such as liquid sodium is heated by the heat of the reactor core 21 of the reactor vessel 20, the heated sodium enters the intermediate heat exchanger 22, and the heated sodium enters the intermediate heat exchanger 22. At 24, it is cooled by sodium in a secondary cooling system (not shown). It then leads to the pump 25 via the line 30 and enters the reactor vessel 20 again. At this time, a part of the pressurized sodium inside the pump is flow-regulated by changing the opening degree of the valve 23 provided in the middle of the leakage treatment line 29 from the upper part of the pump according to the signal from the liquid level gauge 28. will be returned to.
更に原子炉容器２０、中間熱交換器２２、ポン
プ２５及び配管部はその破損時に漏洩する流体を
受けるガードベツセル３６で下部が被われてい
る。 Further, the lower portions of the reactor vessel 20, intermediate heat exchanger 22, pump 25, and piping portion are covered with a guard vessel 36 that receives fluid that leaks when the reactor vessel 20 is damaged.
［発明が解決しようとする課題］
上記のように配管を設けた漏洩処理システムを
用いて、ポンプ液面の調整を行う場合には次のよ
うな問題があつた。[Problems to be Solved by the Invention] When adjusting the pump liquid level using the leakage treatment system provided with piping as described above, the following problems occurred.
(1) ガードベツセル内に配管を引廻し、また、弁
を設置する必要があり、そのためのスペース確
保のためのガードベツセルが大型化し価格が高
くなる。(1) It is necessary to route piping and install a valve inside the guard vessel, which increases the size and price of the guard vessel to secure space for this purpose.
(2) 漏洩処理システムの配管及び弁の耐震サポー
トが必要となり、このため、ガードベツセルが
更に大型化する問題がある。(2) Seismic support for the piping and valves of the leakage treatment system is required, which poses the problem of further increasing the size of the guard vessel.
(3) ガードベツセルの大型化に伴い、広い設置ス
ペースを必要とし、建物が大きくなることによ
るプラントの価格の上昇の問題がある。(3) As Guard Vessels become larger, they require a larger installation space, and as the building becomes larger, there is the problem of an increase in the price of the plant.
(4) 漏洩処理システムの配管の破断を設計上想定
する必要があるので、プラントの信頼性が下す
る
(5) 漏洩処理システムの弁の故障時の補修は配管
を切断して行うので大変困難な作業となる。(4) The reliability of the plant is affected because it is necessary to assume in the design that the piping of the leakage treatment system will break. (5) It is very difficult to repair a malfunctioning valve in the leakage treatment system because it requires cutting the piping. It will be a lot of work.
(6) 原子炉トリツプ時のようにプラントの温度が
急激に低下するとき処理システムの配管合流部
（第１図及び第２図の符号２７の箇所）で大き
な流体の温度差が生じるため合流部の構造健全
性を損なう恐れがあり、設計上の注意が必要で
ある。(6) When the temperature of the plant drops rapidly, such as during a reactor trip, a large temperature difference occurs in the fluid at the pipe junction of the treatment system (point 27 in Figures 1 and 2), so the junction There is a risk of damaging the structural integrity of the structure, so care must be taken in design.
本発明は従来設備の以上の課題に鑑みてなされ
たもので、FBR用プラントの主循環ポンプとし
て、できるだけ簡素で、系統の取合や配置上のス
ペースを最小限にし、漏洩流体の処理を行つて液
面を調整しうる自由液面型機械式ポンプを提供す
ることを目的としている。 The present invention was made in view of the above-mentioned problems with conventional equipment, and is designed to be as simple as possible as a main circulation pump for an FBR plant, minimize system connection and layout space, and handle leakage fluid. The object of the present invention is to provide a free liquid level mechanical pump that can adjust the liquid level by adjusting the liquid level.
［課題を解決するための手段］
この目的を達成するために、本発明は、ナトリ
ウム戻し部をポンプ本体内に設置し、漏洩ナトリ
ウム量及び系統側圧力損失の不確定幅を調節でき
るように調整弁機構とし、これをポンプ本体内に
設置したものである。即ち、ポンプケーシング内
を上部プレナム部及び下部プレナム部に仕切る仕
切板を備え、かつ、ポンプインペラが配置される
高圧プレナム部と前記下部プレナム部とを区画す
る内部ケーシングを備えた自由液面型機械式ポン
プにおいて、前記仕切板は前記ポンプケーシング
との〓間が、この部分の戻り量をGgとするとき、
G1−（Gv）nax≦Gg≦G1−（Gv）nio（但し、G1は漏
洩量、（Gv）naxは調整弁を全開にしたときの戻り
量、（Gv）nioは調整弁を全閉にしたときの戻り量）
を満足する〓間を備えると共に、前記上部プレナ
ム部内の流体を前記下部プレナム部に戻すための
弁機構と、前記ポンプケーシング内の液位を監視
するための液位監視手段と、前記液位監視手段に
よつて監視された液位に基づき前記弁機構を開閉
する手段とを備えていることを特徴としている。[Means for Solving the Problems] In order to achieve this object, the present invention installs a sodium return section inside the pump body, and adjusts the amount of leaked sodium and the uncertainty width of the pressure loss on the system side. This valve mechanism is installed inside the pump body. That is, a free liquid level machine that is equipped with a partition plate that partitions the inside of the pump casing into an upper plenum part and a lower plenum part, and an inner casing that partitions the high-pressure plenum part in which the pump impeller is arranged and the lower plenum part. In the type pump, the distance between the partition plate and the pump casing is such that when the return amount of this part is G g ,
G 1 − (G v ) nax ≦G g ≦ G 1 − (G v ) nio (However, G 1 is the leakage amount, (G v ) nax is the return amount when the regulating valve is fully opened, (G v ) nio is the return amount when the regulating valve is fully closed)
a valve mechanism for returning the fluid in the upper plenum to the lower plenum, a liquid level monitoring means for monitoring the liquid level in the pump casing, and the liquid level monitoring and means for opening and closing the valve mechanism based on the liquid level monitored by the means.
［実施例］
以下に、図示する実施例に関してこの発明を詳
細に説明する。[Embodiments] The invention will now be described in detail with reference to illustrated embodiments.
この発明の機械式ポンプは、第３図に示すよう
に、ポンプケーシング１内が仕切板２によつて上
部プレナム部３と下部プレナム部４とに仕切られ
た構造となつている。また、下部プレナム部４内
には内部ケーシングがあり、高圧プレナム部５を
形成している。この高圧プレナム部５内にはポン
プインペラ６があり、ポンプインペラ６を回転さ
せるモータ７とインペラとを結ぶポンプ軸８は、
仕切板２を貫通する箇所に設けた下部軸受９で支
持されている。仕切板２には上部プレナム部３の
流体（ナトリウム）を下部プレナム部４へ戻す戻
し部としての弁機構即ち、調節弁１０を設け、弁
１０は弁棒１１によつてポンプ外部のハンドル１
２で操作可能になつている。上部プレナム部３の
流体自由液面上にカバーガス系配管１３が開いて
いる。１４は液面計である。 As shown in FIG. 3, the mechanical pump of the present invention has a structure in which the inside of a pump casing 1 is partitioned by a partition plate 2 into an upper plenum part 3 and a lower plenum part 4. There is also an internal casing within the lower plenum section 4, forming a high pressure plenum section 5. A pump impeller 6 is located within the high-pressure plenum 5, and a pump shaft 8 connects the impeller to a motor 7 that rotates the pump impeller 6.
It is supported by a lower bearing 9 provided at a location passing through the partition plate 2. The partition plate 2 is provided with a valve mechanism, that is, a control valve 10, which serves as a return section for returning fluid (sodium) from the upper plenum section 3 to the lower plenum section 4.
2 is now operational. A cover gas system piping 13 opens above the free fluid level of the upper plenum portion 3 . 14 is a liquid level gauge.
ポンプの下部プレナム部４に入口４ａを経て系
統側から流入した流体（ナトリウム）はポンプイ
ンペラ６の作用により吸込まれ、高圧に加圧され
て、高圧プレナム部５に流出し、その大部分はポ
ンプ出口５ａより系統側に送られる。一方、高圧
プレナム部５内のナトリウムの一部は下部軸受９
とポンプ軸８との〓間を通つて、上部プレナム部
３内に流出し、軸受部の潤滑を行う。 Fluid (sodium) flowing into the lower plenum part 4 of the pump from the system side via the inlet 4a is sucked in by the action of the pump impeller 6, pressurized to high pressure, and flows out to the high pressure plenum part 5, most of which is absorbed by the pump. It is sent to the system side from the outlet 5a. On the other hand, some of the sodium in the high-pressure plenum section 5 is removed from the lower bearing 9.
It flows into the upper plenum part 3 through the space between the pump shaft 8 and the pump shaft 8, and lubricates the bearing part.
上部プレナム部３に流出したナトリウムはポン
プケーシング１内の仕切板２に設置されている調
整弁１０によつて、流量を調節されて下部プレナ
ム部４に戻される。なお上部プレナム部３と下部
プレナム部４とを仕切る仕切板２はポンプケーシ
ング１との間にポンプ組立（インペラ挿入）上必
要な僅かの〓間を有し、上部プレナム部３のナト
リウムがこの僅かな〓間からも下部プレナム部４
に流入する。 The sodium flowing into the upper plenum section 3 is returned to the lower plenum section 4 with its flow rate adjusted by a regulating valve 10 installed on a partition plate 2 within the pump casing 1 . Note that the partition plate 2 that partitions the upper plenum part 3 and the lower plenum part 4 has a small space between it and the pump casing 1, which is necessary for pump assembly (impeller insertion). Also from between the lower plenum section 4
flows into.
調整弁によつて調節される戻り量をGv、組立
上必要な〓間を通る戻り量をGg、高圧プレナム
５から上部プレナム部３に流出する漏洩量をG1
とすれば次式の関係がある。 The return amount adjusted by the regulating valve is G v , the return amount passing through the gap required for assembly is G g , and the leakage amount flowing from the high pressure plenum 5 to the upper plenum section 3 is G 1
Then, we have the following relationship.
G1＝Gv＋Gg (1)
したがつて、ポンプケーシング１の内側面と仕
切板２との〓間は戻り量Ggとするとき、次の範
囲に制限する必要がある。 G 1 = G v + G g (1) Therefore, when the distance between the inner surface of the pump casing 1 and the partition plate 2 is defined as the return amount G g , it is necessary to limit it to the following range.
G1−（Gv）nax≦Gg≦G1（Gv）nio (2)
但し、（Gv）naxは調整弁１０を全開にしたとき
の戻り量、（Gv）nioは調整弁１０を全閉にしたと
きの戻り量、G1は漏洩量である。 G 1 − (G v ) nax ≦G g ≦ G 1 (G v ) nio (2) However, (G v ) nax is the return amount when the regulating valve 10 is fully opened, and (G v ) nio is the regulating valve 10 is the return amount when fully closed, and G1 is the leakage amount.
調整弁１０の戻り量は後述するように、ポンプ
液位を原子炉容器液位と同じレベルになるよう調
整弁１０を絞ることにより（Gv）naxから（Gv）nio
の範囲で変えることができる。この戻り量の変化
巾はプラントの製作誤差や負荷の変動を考慮して
設定されるもので〓間を通る戻り量Ggも(2)式を
満足するように設計する必要がある。 As will be described later, the return amount of the regulating valve 10 can be changed from (G v ) nax to (G v ) nio by throttling the regulating valve 10 so that the pump liquid level becomes the same level as the reactor vessel liquid level.
can be changed within the range. The range of change in the return amount is set in consideration of plant manufacturing errors and load fluctuations, and the return amount G g passing through the gap must also be designed to satisfy equation (2).
設計例では管路の定格運転時流量を100％とす
ればGv＝2.8％、Gg＝0.2％、G1＝3.0％程度の流
量割合を有する。 In the design example, if the flow rate during rated operation of the pipeline is 100%, the flow rate ratios are approximately G v = 2.8%, G g = 0.2%, and G 1 = 3.0%.
ポンプ内液面１７はポンプ停止時には原子炉液
面と同一になり、またポンプ運転中もこの液位に
保たれている。 The liquid level 17 in the pump becomes the same as the reactor liquid level when the pump is stopped, and is maintained at this level even during pump operation.
ポンプ内の液位は次式から計算される。 The liquid level in the pump is calculated from the following formula:
γ・ｈ＝Ps＋△Pv−Pc (3)
但し、ｈはポンプ内液面１７と下部プレナム部
４のポンプ吸込部との高さの差、γは液体の比
重、Psは下部プレナム部４の圧力、△Pvは調整
弁１０の圧力損失、Pcはカバーガスの圧力であ
る。 γ・h=P s +△P v −P c (3) However, h is the difference in height between the liquid level 17 inside the pump and the pump suction part of the lower plenum part 4, γ is the specific gravity of the liquid, and P s is The pressure in the lower plenum section 4, ΔP v is the pressure loss in the regulating valve 10, and P c is the pressure of the cover gas.
ポンプ内ナトリウムの漏洩量は、設計段階では
正確に評価できないもので、調整弁１０の設計で
はポンプ内液面１７が原子炉の通常の液面に等し
くなるように(3)式から調整弁１０の圧力損失△
Pvを計算し、戻りナトリウムの最大流量時に調
整弁１０が全開でその計算された圧力損失が生じ
るような弁Cv値にすれば良い。最大の戻りナト
リウム流量以下で運転する場合には、調整弁１０
の圧力損失△Pvが小さくなるため液位が下げる
ので、調整弁１０を絞つて液位を回復する。この
制御はポンプ内の液面計１４からの信号で行い得
る。 The leakage amount of sodium inside the pump cannot be accurately evaluated at the design stage, so when designing the regulating valve 10, the adjustment valve 10 is calculated based on equation (3) so that the liquid level 17 inside the pump is equal to the normal liquid level in the reactor. pressure loss △
It is sufficient to calculate P v and set the valve C v value such that the calculated pressure loss occurs when the regulating valve 10 is fully open at the maximum flow rate of the return sodium. When operating below the maximum return sodium flow rate, adjust valve 10
Since the pressure loss ΔP v becomes smaller, the liquid level decreases, so the regulating valve 10 is throttled to restore the liquid level. This control can be performed using a signal from a level gauge 14 within the pump.
具体的にはポンプ液面の設定は、ポンプ運転中
に、液面を液位監視手段である液面計１４で監視
しながら、調整弁１０を調節して行い、調整弁１
０は一度設定したら動かさずに錠止する。 Specifically, the pump liquid level is set by adjusting the regulating valve 10 while monitoring the liquid level with the liquid level gauge 14, which is a liquid level monitoring means, during pump operation.
Once set to 0, it will be locked without moving.
なお、負荷の変動により、系統側と戻り部との
圧損が異なり、ポンプの液面が多少変動する。ポ
ンプケーシング１の構造健全性が問題となるよう
な液面変動が想定されるプラントにおいては、第
４図に示す実施例のように、調整弁１０をモータ
１２′で駆動操作する電動弁とし、液面計１４の
信号１５でモータ１２′を制御し、調整弁１０を
調節して、ポンプ液面を自動的に制御することが
できる。 Note that due to changes in load, the pressure drop between the system side and the return section differs, and the liquid level in the pump fluctuates somewhat. In a plant where fluid level fluctuations that pose problems to the structural integrity of the pump casing 1 are expected, the regulating valve 10 is an electric valve operated by a motor 12', as shown in the embodiment shown in FIG. The pump liquid level can be automatically controlled by controlling the motor 12' using the signal 15 from the liquid level gauge 14 and adjusting the regulating valve 10.
一方、調整弁１０の故障時には、ハンドル１２
と弁棒１１と調整弁１０を一度に上方に引き抜く
ことができるので従来のように配管を切断する方
式と比較すると格段に補修性が向上する。 On the other hand, when the regulating valve 10 fails, the handle 12
Since the valve stem 11 and the regulating valve 10 can be pulled upward at the same time, repairability is greatly improved compared to the conventional method of cutting the piping.
［発明の効果］
以上のように、この発明によればポンプ液面調
整がポンプ本体内の調整弁で行えるので、漏洩処
理ラインの配管や耐震サポートの削除、ガードベ
ツセルの小型化、調整弁の容易な補修性の確保等
の効果がある。[Effects of the Invention] As described above, according to the present invention, the pump liquid level can be adjusted using the regulating valve inside the pump body, so it is possible to eliminate piping and seismic support for the leakage treatment line, downsize the guard vessel, and adjust the regulating valve. This has the effect of ensuring easy repairability, etc.
第１図は高速増殖炉プラントに自由液面型機械
式ポンプを使用した場合の従来例を示す原子炉と
その冷却系の説明図、第２図は第１図におけるポ
ンプと漏洩処理ラインの詳細を示す説明図、第３
図はこの発明による自由液面型機械式ポンプの一
実施例を示す縦断面図、第４図は他の実施例を示
す第３図と同様の断面図である。
１……ポンプケーシング、２……仕切板、３…
…上部プレナム部、４……下部プレナム部、５…
…高圧プレナム部、６……ポンプインペラ、７…
…モータ、８……ポンプ軸、９……下部軸受、１
０……調整弁、１１……弁棒、１２……ハンド
ル、１２′……モータ、１３……カバーガス系配
管、１４……液面計、１５……信号、１７……液
面。
Figure 1 is an explanatory diagram of a nuclear reactor and its cooling system showing a conventional example of using a free liquid level mechanical pump in a fast breeder reactor plant, and Figure 2 is a detailed diagram of the pump and leak treatment line in Figure 1. Explanatory diagram showing the third
The figure is a longitudinal sectional view showing one embodiment of the free liquid level mechanical pump according to the present invention, and FIG. 4 is a sectional view similar to FIG. 3 showing another embodiment. 1... Pump casing, 2... Partition plate, 3...
...Upper plenum section, 4...Lower plenum section, 5...
...High pressure plenum section, 6...Pump impeller, 7...
...Motor, 8...Pump shaft, 9...Lower bearing, 1
0...Adjustment valve, 11...Valve stem, 12...Handle, 12'...Motor, 13...Cover gas system piping, 14...Liquid level gauge, 15...Signal, 17...Liquid level.
Claims (1)
部プレナム部に仕切る仕切板を備え、かつ、ポン
プインペラが配置される高圧プレナム部と下部プ
レナム部とを区画する内部ケーシングを備えた自
由液面型機械式ポンプにおいて、前記仕切板は前
記ポンプケーシングとの間に次式を満足する〓間
を備えると共に、 G1−（Gv）nax≦Gg≦G1−（Gv）nio 但し、 Gg…〓間からの戻り量 （Gv）nax…調整弁を全開にしたときの戻り量 （Gv）nio…調整弁を全閉にしたときの戻り量 G1……漏洩量 前記上部プレナム部内の流体を前記下部プレナ
ム部に戻すための弁機構と、前記ポンプケーシン
グ内の液位を監視するための液位監視手段と、前
記液位監視手段によつて監視された液位に基づき
前記弁機構を開閉する手段とを備えている自由液
面型機械式ポンプ。[Claims] 1. A free system comprising a partition plate that partitions the inside of the pump casing into an upper plenum part and a lower plenum part, and an internal casing that partitions a high-pressure plenum part in which a pump impeller is arranged and a lower plenum part. In the liquid surface type mechanical pump, the partition plate is provided with a space between it and the pump casing that satisfies the following formula, and G 1 − (G v ) nax ≦G g ≦ G 1 − (G v ) nio However, G g ...= Return amount from between (G v ) nax ... Return amount when the regulating valve is fully open (G v ) nio ... Return amount when the regulating valve is fully closed G 1 ... Leakage amount a valve mechanism for returning fluid in the upper plenum to the lower plenum; a liquid level monitoring means for monitoring a liquid level in the pump casing; and a liquid level monitored by the liquid level monitoring means. and means for opening and closing said valve mechanism based on said free level mechanical pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57031675A JPS58150094A (en) | 1982-03-02 | 1982-03-02 | Free liquid level type mechanical pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57031675A JPS58150094A (en) | 1982-03-02 | 1982-03-02 | Free liquid level type mechanical pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58150094A JPS58150094A (en) | 1983-09-06 |
| JPH0316515B2 true JPH0316515B2 (en) | 1991-03-05 |
Family
ID=12337687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57031675A Granted JPS58150094A (en) | 1982-03-02 | 1982-03-02 | Free liquid level type mechanical pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58150094A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62168095A (en) * | 1986-01-18 | 1987-07-24 | 株式会社日立製作所 | Primary main circulating pump for liquid-metal cooled fast breeder reactor |
| CN109185164A (en) * | 2018-10-16 | 2019-01-11 | 中国科学院合肥物质科学研究院 | A kind of hermetically sealed liquid metal mechanical pump |
| SE545986C2 (en) * | 2021-07-08 | 2024-04-02 | Energyintel Services Ltd | A thermal energy storage system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50121695A (en) * | 1974-03-04 | 1975-09-23 |
-
1982
- 1982-03-02 JP JP57031675A patent/JPS58150094A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50121695A (en) * | 1974-03-04 | 1975-09-23 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58150094A (en) | 1983-09-06 |
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