公开(公告)号：US4913178A

公开(公告)日：1990-04-03

申请号：US235838

申请日：1988-08-18

Applicant: David E. Fowler

Inventor： David E. Fowler

IPC: C10G21/00 ,  H01F27/14

CPC classification number: H01F27/14 ,  C10G21/006 ,  Y10S210/909

Abstract: Disclosed is a process for removing polychlorinated biphenyls from electrical apparatus, particularly transformers, to achieve concentration levels of 50 ppm or less as required by the EPA. A dielectric fluid having a relatively low boiling point as compared to polychlorinated biphenyls and other contaminants and in which PCB's are soluble is selected. There is an external cooling loop through which the dielectric fluid is circulated maintaining the temperature and pressure of the transformer within its design limits. There is an external distillation loop where the liquid removed from the transformer is heated to boiling point of the selected dielectric fluid thereby vaporizing the dielectric fluid and leaving the polychlorinated biphenyls in liquid phase in the distillation vessel. The dielectric fluid vapor is then condensed and returned to solubilize remaining PCB's in the transformer.

Abstract translation: 公开了从电气设备，特别是变压器除去多氯联苯的方法，以达到EPA要求的浓度水平为50ppm或更低。 选择与多氯联苯和其他污染物相比具有相对低沸点并且其中PCB可溶的介电流体。 存在外部冷却回路，电介质流体通过该冷却回路保持变压器的温度和压力在其设计限制内。 存在外部蒸馏回路，其中从变压器去除的液体被加热到所选择的介电流体的沸点，从而蒸发介电流体并使多氯联苯在蒸馏容器中保持液相。 然后将介电流体蒸气冷凝并返回以增溶变压器中剩余的PCB。

公开(公告)号：US4814021A

公开(公告)日：1989-03-21

申请号：US078480

申请日：1987-07-27

Applicant: Michael J. Massey ,  David R. Hopper

Inventor： Michael J. Massey ,  David R. Hopper

IPC: C10G21/00 ,  H01F27/14 ,  B08B3/10

CPC classification number: H01F27/14 ,  C10G21/006 ,  Y10S159/08

Abstract: A method for cleaning and reclassifying electrical apparatus designed for use with PCB fluid electrolytes is described which is capable of operation on the site of the equipment being cleaned and while said equipment is energized.

Abstract translation: 描述了一种用于清洁和重新分类用于PCB流体电解质的电气设备的方法，其能够在被清洁的设备的位置和所述设备通电的同时进行操作。

公开(公告)号：US4744905A

公开(公告)日：1988-05-17

申请号：US739775

申请日：1985-06-03

Applicant: Gilbert Atwood

Inventor： Gilbert Atwood

IPC: B08B3/08 ,  C10G21/00 ,  H01F27/14 ,  B08B5/00

CPC classification number: B08B3/08 ,  C10G21/006 ,  H01F27/14 ,  Y10S210/909

Abstract: Method for replacing a coolant containing PCB in electrical induction apparatus having a tank containing the PCB-containing coolant, an electrical winding and porous solid cellulosic electrical insulation immersed in, and impregnated with, the PCB-containing coolant with a substantially PCB-free permanent coolant to convert said electrical apparatus into one in which the rate of elution of PCB into the PCB-free coolant is below the maximum allowable rate of elution into the coolant of an electrical apparatus rated as non-PCB comprising steps of: (a) draining the PCB-containing coolant from said tank; (b) filling the tank with an interim dielectric cooling liquid; (c) electrically operating the apparatus; (d) thereafter draining the interim dielectric cooling liquid containing the eluted PCB from the tank; (e) repeating the cycle of steps (b), (c) and (d) a sufficient number of times until the PCB elution rate does not exceed the rate of 50 ppm PCB based on the weight of the permanent coolant after 90 days of electrical operation; and (f) filling the tank with a substantially PCB-free permanent coolant selected from the group consisting of high boiling, high viscosity, silicone oils, synthetic ester fluids, poly-alpha-olefin oils and hydrocarbon oils.

Abstract translation: 在具有含有含PCB的冷却剂的容器的电气感应装置中更换含有PCB的冷却剂的方法，浸入含有PCB的冷却剂并浸渍在含PCB的冷却剂中的电绕组和多孔固体纤维素电绝缘体，其基本上不含PCB的永久性冷却剂 将所述电气设备转换成其中PCB进入无PCB冷却剂的洗脱速率低于被评定为非PCB的电气设备的冷却剂的最大允许速度的包括以下步骤的电气设备：（a）将 来自所述罐的含PCB的冷却剂; （b）用中间介电冷却液填充罐; （c）电气操作该装置; （d）然后从罐中排出含有洗脱的PCB的中间介电冷却液; （e）重复步骤（b），（c）和（d）的循环足够的次数，直到PCB洗脱速率不超过50ppm PCB的速率，基于90天后永久性冷却剂的重量 电气操作; 和（f）用大量不含PCB的永久性冷却剂填充罐，该冷却剂选自高沸点，高粘度，硅油，合成酯流体，聚α​​-烯烃油和烃油。

公开(公告)号：US4738780A

公开(公告)日：1988-04-19

申请号：US742962

申请日：1985-06-10

Applicant: Gilbert R. Atwood

Inventor： Gilbert R. Atwood

IPC: C10G21/00 ,  H01F27/14 ,  B01D11/04

CPC classification number: C10G21/006 ,  H01F27/14 ,  Y10S210/909

Abstract: Method of replacing a PCB-containing coolant in electrical induction apparatus having a vessel containing said PCB-containing coolant, an electrical winding and porous solid cellulosic electrical insulation immersed in, and impregnated with, said PCB-containing coolant with a substantially PCB-free high boiling dielectric permanent coolant into which any residual PCBs elute at no greater than a selected target rate comprising steps of (a) draining the PCB-containing coolant from the vessel, (b) filling the vessel with an interim dielectric coolant, (c) electrically operating the apparatus, (d) removing interim coolant containing eluted PCB, (e) repeating steps (b), (c) and (d) a sufficient number of times until the PCB elution rate does not exceed 5 times a selected target rate, (f) filling the vessel with PCB-free high boiling dielectric silicone oil as coolant, (g) electrically operating the apparatus, (h) thereafter removing the silicone oil coolant containing eluted PCB, (i) repeating steps (f), (g) and (h) a sufficient number of times until the PCB elution rate into the silicone oil is less than the selected target rate, and refilling the vessel with a substantially PCB-free dielectric cooling liquid.

Abstract translation: 在具有含有含PCB的冷却剂的容器的电气感应装置中更换含PCB的冷却剂的方法，浸入和浸渍所述含PCB冷却剂的电绕组和多孔固体纤维素电绝缘体，基本上不含PCB的高 沸腾介质永久性冷却剂，其中任何残留的PCB以不超过选定目标速率洗脱到其中，包括以下步骤：（a）从容器中排出含PCB的冷却剂，（b）用中间介质冷却剂填充容器，（c）电 （d）除去含有洗脱的PCB的中间冷却剂，（e）重复步骤（b），（c）和（d）足够的次数，直到PCB洗脱速率不超过所选目标速率的5倍， （f）用不含PCB的高沸点介电硅油作为冷却剂填充容器，（g）电气操作设备，（h）此后除去含有洗脱PCB的硅油冷却剂，（i）重复 步骤（f），（g）和（h）足够的次数，直到进入硅油的PCB洗脱速率小于所选择的目标速率，并且用基本上无PCB的介电冷却液体再填充容器。

公开(公告)号：US4561866A

公开(公告)日：1985-12-31

申请号：US662849

申请日：1984-10-19

Applicant: Josef Altmann ,  Jaromir Ratislav ,  Jaromir Ratislav

Inventor： Josef Altmann ,  Jaromir Ratislav ,  Jaromir Ratislav

IPC: B01D17/04 ,  B01D19/00 ,  C10M175/00

CPC classification number: B01D19/0036 ,  B01D17/048 ,  C10M175/00 ,  H01F27/14

Abstract: Contaminants of oil fillings of technological units using oil as a cooling, lubricating, insulating, or power medium, are removed by periodically applying a separating working cycle and a pressure working cycle in a vessel connected with the oil system of the technological unit, and returning the cleaned oil to the oil system of the unit. In the course of the separating working cycle, gaseous and liquid contaminants in the vessel are brought to boiling by under-pressure generated by a reversible pump; a gas-liquid cushion created thereby above the oil surface in the vessel is displaced from the vessel in the course of the following pressure working cycle, which is caused by the reverse action of the pump, while the cleaned oil is returned to the oil system of the technological unit. Both cycles are repeated as often as required to clean the oil to the desired degree.

Abstract translation: 使用油作为冷却，润滑，绝缘或动力介质的技术单元的油料填充物的污染物通过在与技术单元的油系统连接的容器中周期性地进行分离工作循环和压力工作循环而被去除，并且返回 将清洁的油清理到机组的油系统。 在分离工作循环过程中，通过由可逆泵产生的压力使容器中的气态和液态污染物沸腾; 由此在容器中的油面上方形成的气液缓冲液在随后的压力工作循环的过程中从容器中移出，这是由于泵的反作用引起的，而清洁的油被返回到油系统 的技术单位。 按照需要重复两次循环，以清理油到所需的程度。

公开(公告)号：US4092484A

公开(公告)日：1978-05-30

申请号：US725208

申请日：1976-09-22

Applicant: Charles Peter Majkrzak ,  Vishno Edward Brennan

Inventor： Charles Peter Majkrzak ,  Vishno Edward Brennan

IPC: H01F27/14 ,  H01F27/40 ,  H01F27/02

CPC classification number: H01F27/402 ,  H01F27/14 ,  H01F2027/404 ,  H01F2027/406

Abstract: The arrangement includes an enclosed container containing therein high voltage electrical components. A dielectric oil is disposed in and completely fills the container. A volume/pressure compensator is fastened to the bottom inner surface of the enclosed container with the compensator including a confined compressible dielectric material compatible with the dielectric oil chemically, thermally and structurally.

Abstract translation: 该装置包括容纳有高压电气部件的封闭容器。 电介质油设置在容器中并完全填充容器。 体积/压力补偿器被紧固到密封容器的底部内表面，补偿器包括在化学，热学和结构上与电介质油相容的可密封的可压缩介电材料。

公开(公告)号：US3934453A

公开(公告)日：1976-01-27

申请号：US518151

申请日：1974-10-25

Applicant: Petter Hessen

Inventor： Petter Hessen

IPC: H01F27/14 ,  G01D7/04 ,  H01G5/04 ,  H02G15/26

CPC classification number: H01F27/14

Abstract: A conservator system for transformers includes a conservator tank. The apparatus is filled with oil which is saturated with a non-combustible gas. The conservator tank is connected by conduits to the top and if suitable also to the bottom of the transformer tank, respectively. The top of the conservator tank is filled with free non-combustible gas. A bag of flexible material is arranged in the top of the conservator tank and the interior of this bag is connected to the atmosphere so that it separates the oil and the gas in the tank from the atmosphere.

Abstract translation: 变压器储油柜系统包括储油罐。 该装置充满用不燃气体饱和的油。 储油罐通过导管连接到顶部，如果也适用于变压器油箱的底部。 储油罐的顶部装有自由的不燃气体。 一个柔性材料袋布置在储油罐的顶部，并且该袋的内部与大气连接，从而将油和气体与大气分离。

公开(公告)号：US3894171A

公开(公告)日：1975-07-08

申请号：US41755973

申请日：1973-11-20

Applicant: BRITISH OXYGEN CO LTD

Inventor： KUSAY ROLAND GREGOR PAUL

IPC: B01D19/00 ,  H01F27/14 ,  H01B9/06 ,  B01D39/00

CPC classification number: H01F27/14 ,  B01D19/0063

Abstract: The cooling oil in large electrical transformers is purified, by having sorbed water and gases removed, by means of a vacuum treatment vessel permanently plumbed to the transformer. The desorbing treatment is carried out while the transformer is live, so that the oil needs little or no extra heat supplied before it can be treated.

Abstract translation: 大型电力变压器中的冷却油通过将吸附的水和气体除去，通过永久性地浸入变压器的真空处理容器来净化。 在变压器使用时进行解吸处理，因此在处理之前，油需要很少的或没有额外的热量供应。

公开(公告)号：US3559382A

公开(公告)日：1971-02-02

申请号：US3559382D

申请日：1968-04-10

Applicant: GRACE W R & CO

Inventor： JAGGARD PETER CHARLES ,  HOOPER GRAHAM GOERGE

IPC: B01D53/26 ,  H01F27/14 ,  B01D53/04

CPC classification number: H01F27/14 ,  B01D53/261

Abstract: AN APPARATUS FOR DRYING GASES PASSING INTO OR OUT OF AN OTHERWISE CLOSED CHAMBER. SAID APPARATUS COMPRISES A TRANSPARENT CONTAINER FOR DESICCANT. A MEANS TO CONTROL THE ADMISSION OF ATMOSPHERIC AIR INTO THE DESICCANT CONTAINER, AND A RELEASABLE MEANS FOR EASILY REMOVING THE DESICCANT FROM ITS CONTAINER.

公开(公告)号：US3330902A

公开(公告)日：1967-07-11

申请号：US46401665

申请日：1965-06-15

Applicant: SHINJI NAKAZAWA ,  TOHRU NAKAZAWA

Inventor： SHINJI NAKAZAWA ,  TOHRU NAKAZAWA

IPC: H01F27/14

CPC classification number: H01F27/14