WO2014071472A1 - Flexible endoscope with hydraulic and pneumatic cooling for inspecting coke oven batteries - Google Patents

Flexible endoscope with hydraulic and pneumatic cooling for inspecting coke oven batteries Download PDF

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Publication number
WO2014071472A1
WO2014071472A1 PCT/BR2013/000116 BR2013000116W WO2014071472A1 WO 2014071472 A1 WO2014071472 A1 WO 2014071472A1 BR 2013000116 W BR2013000116 W BR 2013000116W WO 2014071472 A1 WO2014071472 A1 WO 2014071472A1
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WO
WIPO (PCT)
Prior art keywords
endoscope
hydraulic
flexible
coke oven
cooling
Prior art date
Application number
PCT/BR2013/000116
Other languages
French (fr)
Portuguese (pt)
Inventor
Didier Henri René SOUBLIN
Original Assignee
D&M Endoscopios Industriais Ltda Epp.
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Publication of WO2014071472A1 publication Critical patent/WO2014071472A1/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D21/00Arrangements of monitoring devices; Arrangements of safety devices
    • F27D21/02Observation or illuminating devices
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10BDESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B45/00Other details
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/24Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
    • G02B23/2476Non-optical details, e.g. housings, mountings, supports
    • G02B23/2492Arrangements for use in a hostile environment, e.g. a very hot, cold or radioactive environment

Definitions

  • a new endoscope to be used for the maintenance and monitoring of coke ovens in operation, but not limited to them, by analyzing the images of their internal walls by an endoscope with a metallic tube body.
  • the radius of curvature allows for relatively easy inspection in furnaces with small top areas and up to at least 10 meters deep for extended periods as the rigid tip features an efficient dual chamber hydraulic cooling system. , in addition to pneumatic cooling.
  • the present equipment was also developed to meet the important and immeasurable environmental and ecological aspects in force, on which depends the future of our planet.
  • the flexible endoscope in question is an important component in detecting and assisting in the repair of cracks in steel furnaces, in order to help prevent contaminant gases and ash from being released into the atmosphere.
  • Inspection modalities also include drillholes for probing core furnace samples, and thermography in which an infrared scanner measures the outside temperature of the furnace wall and diagnoses the internal conditions.
  • the French document has as its major drawback the short duration of stay inside the furnace as the hydraulic cooling system by The simple humidification of the flexible element and the pneumatic cooling head cannot guarantee the suitability of the imaging components inside the flexible element and the immersion head when exposed to high temperatures.
  • the short dwell time and poor cooling also compromise the quality and fidelity of the images, more theoretically accurate if taken over longer periods and / or dwell time inside the oven.
  • the flexibility of the head connecting element facilitates its handling
  • simple humidification does not guarantee its permanence for longer periods inside the oven.
  • a negative aspect of the French document is also the need to exchange the movable part, which has a single camera, in order to achieve lateral and frontal visualization of the internal walls, which can only be done with each new introduction of the endoscope in the oven.
  • US6229563 refers to an endoscope for internal inspection of furnaces, consisting of a rigid boom at the end of which, opposite the operator's handle, denotes a camera with sapphire external lens attached to an external control unit, connected to a reproductive device positioned on the operator's helmet. Cooling of the camera boom and end is accomplished by the continuous circulation of water in a jacket, and by an air curtain that takes place in the ring channels that support the camera case passing over the lens for cleaning purposes.
  • hydraulic power in separate, concentric chambers where chilled water circulates through the inner chamber to the end of the rigid tip where the camera housing is located, returning through the outer chamber to the rotating joints located on the spool. Consequently, this endoscope can be used to inspect coke ovens up to 10m deep for a longer period than known models. That is, the equipment was developed to allow a visual inspection to be carried out inside the combustion chambers and inside the coke oven and to assist in the repair of their walls.
  • the main objective of this equipment is to enable the detection of cracks in the walls between the combustion chambers and coke ovens. Through the cracks pass the flames of the burners which increases the consumption of coal.
  • the burning of coal in direct contact with the flames generates gases, as shown in the table below, which, through the cracks, are sucked into the chimney and thrown into the environment. These gases, which are harmful to the environment, are only part of the environmental damage, as a large amount of coal dust is also sucked into the chimney by cracking.
  • a coke oven includes 32 (thirty-two) combustion chambers, ranging from number 2 to 32.
  • the equipment object of this invention has in one objective to detect the cracks and assist in their repair, avoiding harmful causes at the environmental level, promoted by cracking. More technically, the present equipment allows the repair of chambers number 2 to 32, since the number 1 chamber has particularities that require other type of equipment, already under development, to act in the same line of equipment of this invention.
  • COG Coke oven gas Another object of the invention is to extend the life of cameras and improve the quality of their images by inserting conical outlets through which air is exhausted from the cooling system. In this way, the conical-directed front air outlet prevents heat and debris from the interior of the blast furnace from reaching the camera lens, impairing image quality. Indirectly, as the temperature of the lens is lower compared to the environment being filmed, the condensation of the lens is avoided.
  • the endoscope is mounted on a wheeled stand with a set of rotating joints, which allow cabling and compressed air to pass through the camera housing, as well as chilled water through a second overlapping hose. towards the inner hydraulic chamber and the return of water at the highest temperature through the outer hydraulic chamber through the flexible metal tube to the rotary joints.
  • the flexible steel tube body coated with steel wire and refractory layer is composed of two inner and concentric hoses, whose smaller diameter allows the passage of cabling and compressed air towards the compartment where there is a side camera and another front.
  • the flexible metal tube body also comprises a second more peripheral hose which serves to pass from cold water to the inner hydraulic chamber, which extends to the end of the tip where the camera compartment is located, thus promoting optimal thermal insulation.
  • the rigid tip is made up of three tubes, thus forming two hydraulic chambers and a chamber for receiving the cameras, the latter being completely insulated to prevent water ingress.
  • the outer tube and the intermediate tube are watertight at the ends, which allows the recirculation of water used for cooling.
  • the camera compartment will always be externally in contact with the water from the internal hydraulic chamber, which added to the compressed air benefit the cooling.
  • the camera lenses are aligned with tapered outlets, which prevent direct contact with heat, debris from the oven interior and also prevent condensation as the temperature of the oven is lower than the ambient environment.
  • the residence time combined with the length of the flexible body allows to examine up to the base of the oven, with high resolution image allowing better wear detection.
  • Fig. 1 Perspective view of hydraulic and pneumatic-cooled flexible endoscope for inspection of coke oven batteries
  • Fig. 2 Exploded perspective view of hydraulic and pneumatic-cooled flexible endoscope for inspection of coke oven batteries
  • Fig. 3 Schematic sectional view of hydraulic and pneumatic-cooled flexible endoscope spool and rotary joints for inspection of coke oven batteries;
  • Fig. 4 Schematic sectional view of the flexible metal tube body part and the rigid tip of the hydraulic and pneumatic-cooled flexible endoscope for inspection of coke oven batteries;
  • Fig. 5 Schematic sectional view showing the air and water flow of the hydraulic and pneumatic-cooled flexible endoscope for inspection of coke oven batteries.
  • the "FLEXIBLE HYDRAULIC AND PNEUMATIC COOLING ENDOSCOPE FOR COKE OVEN BATTERY INSPECTION”, object of this patent application, consists essentially of an endoscope (1) mounted on a spool (2) with rotating joints (3 and 4) where the hose body (5) is coiled, which is provided with two inner hoses (6 and 7) and concentric for the passage of cabling (8) / compressed air (9) and chilled water (10) respectively. direction the rigid tip (11), which forms an external hydraulic camera (12) and another internal hydraulic camera (13), as well as the side camera (15) and front camera (16) housing, properly cooled by the cooling system and conical air vents (17).
  • the invented endoscope (1) comprises a flexible steel tube body (5) coated with steel web (A) and refractory layer (B), which is wound on a spool (2) structured on an easel (C) for the placement of electronic imaging equipment, and with rotating joints (3 and 4) properly interconnected the inner hoses (6 and 7) of said body in flexible metal tube (5) at whose end is pronounced a rigid ferrule (1 1) where There is a side camera (15) and another front camera (16), which through adequate cooling and cooling can be placed inside the coke ovens for longer periods, the handling facilitated by the flexibility of the product.
  • the central rotary joint (4) has at one end an inlet (18) for the cabling (8) and compressed air (9), which when passing through an intermediate connection (19) go to the upper rotary joint (3) and thence taking place in the smaller diameter inner hose (6) contained in the flexible metal tube body (5).
  • the distal end of the central rotary joint (4) it has an inlet (20) of chilled water (10), which also passes through an intermediate connection (21) leading to the larger diameter hose (7) contained in the flexible metal tube body (5).
  • the aforesaid distal end also has an outlet (22) of the heated water (23) which returns from the fixed nozzle (11) to the intercept (24) of the flexible metal tube body (5) and the hose (7), making a path reverse on the upper rotary joint (3).
  • the flexible steel tube body (5) lined with steel mesh (A) and refractory layer (B) is easily handled on the top of the oven, with full mobility of the rigid ferrule (11) inside.
  • the rigid end (11) is formed by three concentric mounting tubes (25, 26 and 27), thus forming an internal hydraulic chamber (13) interconnected with the chilled water hose (7), another hydraulic chamber (12) connected to the flexible metal tube body (5) and the chamber (14) of the cameras (15 and 16) with the conical air vents (17), the latter being completely insulated to prevent water ingress .
  • the outer tube (25) and the intermediate tube (26) are closed at the ends (28), which makes it possible to recirculate the cooling water (ie, the chilled water (10) in the internal hydraulic chamber (13) and the heated water (23) by the external hydraulic camera (12).
  • the chamber compartment (14) will always be externally in contact with water from the internal hydraulic chamber (13), which added to the compressed air (9) benefit the cooling.
  • the camera lenses (15 and 16) aligned with tapered outlets (17) prevent direct contact of the lens with heat and debris from the oven interior and also prevent condensation from occurring as the temperature is below ambient. where they are.

Abstract

Flexible endoscope with hydraulic and pneumatic cooling for inspecting coke oven batteries consists essentially of an endoscope (1) mounted on a reel (2) with rotary joints (3 and 4) on which is wound the body in the form of a flexible tube (5) which is provided with two internal, concentric hoses (6 and 7) for the passage, respectively, of cabling (8)/compressed air (9) and chilled water (10) towards the rigid nozzle (11), which forms an external hydraulic chamber (12) and a further, internal hydraulic chamber (13), in addition to the compartment (14) for conditioning the lateral chamber (15) and the front chamber (16) duly cooled by the chilling system and with conical air outlets (17). This is a product with a high level of appeal in ecological terms, since it assists in the detection of cracks that allow leakage of toxic gases and a large quantity of carbon powder to the environment.

Description

"ENDOSCÓPIO FLEXÍVEL COM RESFRIAMENTO HIDRÁULICO E PNEUMÁTICO PARA INSPEÇÃO DE BATERIAS DE FORNOS DE COQUE"  "FLEXIBLE ENDOSCOPE WITH HYDRAULIC AND PNEUMATIC COOLING FOR COKE OVEN BATTERY INSPECTION"
Campo de Aplicação  Application field
Trata a presente solicitação de Patente de Invenção de um novo endoscópio a ser utilizado na manutenção e monitoração de fornos de coque em operação, mas não limitados a esses, pela análise das imagens das suas paredes internas efetivada por um endoscópio com o corpo em tubo metálico flexível cujo raio de curvatura possibilita, com relativa facilidade, a inspeção em fornos com áreas de topo reduzidas e de até pelo menos 10 metros de profundidade, por períodos dilatados uma vez que a ponteira rígida apresenta um eficiente sistema de resfriamento hidráulico configurado por dupla câmara, além do resfriamento pneumático.  It addresses the present patent application for a new endoscope to be used for the maintenance and monitoring of coke ovens in operation, but not limited to them, by analyzing the images of their internal walls by an endoscope with a metallic tube body. The radius of curvature allows for relatively easy inspection in furnaces with small top areas and up to at least 10 meters deep for extended periods as the rigid tip features an efficient dual chamber hydraulic cooling system. , in addition to pneumatic cooling.
Por outro lado, o presente equipamento foi também desenvolvido visando atender aos importantes e imensuráveis aspectos ambientais e ecológicos vigentes, dos quais depende o futuro do nosso planeta. Para tanto, o endoscópio flexível em questão é um importante componente no sentido de detectar e auxiliar no reparo de trincas em fornos siderúrgicos, de maneira a colaborar para que gases contaminantes e cinzas não sejam lançados na atmosfera.  On the other hand, the present equipment was also developed to meet the important and immeasurable environmental and ecological aspects in force, on which depends the future of our planet. To this end, the flexible endoscope in question is an important component in detecting and assisting in the repair of cracks in steel furnaces, in order to help prevent contaminant gases and ash from being released into the atmosphere.
Estado da Técnica State of the Art
Muito tem se investido em novas tecnologias e dispositivos com o objetivo de evitar surpresas desagradáveis nas plantas de fornos de coque, cujo funcionamento regular e estável resulta no fornecimento de coque de qualidade, que atenda com perfeição as necessidades operacionais dos fornos.  Much has been invested in new technologies and devices to avoid unpleasant surprises in coke oven plants, whose regular and stable operation results in the provision of quality coke that perfectly meets the operational needs of the ovens.
Para tanto, a gestão de diferentes formas de inspeções é fundamental no fornecimento de informações sobre as condições reais, a necessidade de manutenções e prognóstico de vida útil dos fornos, com destaque para as inspeções visuais, dependendo do contexto, em paralelo a operação ou quando da parada dos fornos. To this end, the management of different forms of inspections is fundamental in providing information on the actual conditions, the need for maintenance and prognosis of the furnace life, with emphasis on visual inspections, depending on the context, in parallel to the operation or when the furnaces are stopped.
Também são consideradas modalidades de inspeção, as perfurações para sondagem das amostras do núcleo dos fornos, e a termografia em que um scanner infravermelho mede a temperatura externa da parede dos fornos e faz um diagnóstico das condições internas.  Inspection modalities also include drillholes for probing core furnace samples, and thermography in which an infrared scanner measures the outside temperature of the furnace wall and diagnoses the internal conditions.
Em consonância com esse pedido de patente, nos casos em que a inspeção visual in loco não for possível recomenda-se a inspeção endoscópica cujas imagens fornecem meios para a análise das condições reais de todo o interior do forno.  In accordance with this patent application, where visual on-site inspection is not possible, endoscopic inspection whose images provide means for analyzing the actual conditions of the entire furnace interior is recommended.
Nesse sentido, as inspeções por imagens vêm sofrendo larga evolução tendo como base a utilização do conceito de refrigeração nos endoscópios, já largamente difundida, como a melhor forma de suportarem a temperaturas de até 1480°C.  In this sense, the image inspections have been evolving widely based on the use of the widely spread endoscope cooling concept as the best way to withstand temperatures up to 1480 ° C.
O atual estado da técnica antecipa alguns documentos de patentes que versam sobre endoscópios refrigerados, como o documento francês FR 2749390 que descreve uma sonda endoscópica para inspeção de paredes refratárias de fornos industriais, que apresenta uma cabeça de imersão com uma câmera fotográfica inserida em uma parte permutável, sendo ligada por meio de um elemento flexível a uma unidade de operação provida de dispositivo para umedecimento do referido elemento. A refrigeração da cabeça de controle é efetivada por um sistema de circulação interna de ar.  The current state of the art anticipates some patent documents dealing with refrigerated endoscopes, such as French document FR 2749390 which describes an endoscopic probe for refractory wall inspection of industrial furnaces, which features an immersion head with a camera inserted in one part. exchangeable, being connected by means of a flexible element to an operating unit provided with a device for wetting said element. Control head cooling is effected by an internal air circulation system.
O documento francês tem como grande inconveniente a curta duração de permanência no interior do forno, já que o sistema de resfriamento hidráulico por simples umidificação do elemento flexível e o de refrigeração pneumático da cabeça, não são capazes de garantir a idoneidade dos componentes necessários à geração de imagens, tanto no interior do elemento flexível quanto da cabeça de imersão quando expostos a altas temperaturas. A curta duração de permanência e o resfriamento deficiente também comprometem a qualidade e a fidelidade das imagens, em tese, mais exatas se tiradas em períodos mais prolongados e/ ou de permanência no interior do forno. Sendo assim, apesar da flexibilidade do elemento de ligação com a cabeça facilitar o seu manuseio, a simples umidificação não garante sua permanência por períodos mais prolongados no interior do forno. Também é um ponto negativo do documento francês a necessidade de intercambiar a parte móvel, que comporta câmera única, para se conseguir a visualização lateral e a frontal das paredes internas, o que só pode ser efetivado a cada nova introdução do endoscópio no forno. The French document has as its major drawback the short duration of stay inside the furnace as the hydraulic cooling system by The simple humidification of the flexible element and the pneumatic cooling head cannot guarantee the suitability of the imaging components inside the flexible element and the immersion head when exposed to high temperatures. The short dwell time and poor cooling also compromise the quality and fidelity of the images, more theoretically accurate if taken over longer periods and / or dwell time inside the oven. Thus, although the flexibility of the head connecting element facilitates its handling, simple humidification does not guarantee its permanence for longer periods inside the oven. A negative aspect of the French document is also the need to exchange the movable part, which has a single camera, in order to achieve lateral and frontal visualization of the internal walls, which can only be done with each new introduction of the endoscope in the oven.
O documento americano US6229563 se refere a um endoscópio para inspeção interna de fornos, sendo constituído de uma lança rígida em cuja extremidade, oposta a pega do operador, se denota uma câmera com lente externa de safira ligada a uma unidade de controle externa, conectada a um dispositivo reprodutor posicionado no capacete do operador. A refrigeração da lança e da extremidade que comporta a câmera é realizada pela circulação de água contínua numa camisa, e por uma cortina de ar que toma lugar nos canais do anel que suportam a caixa da câmera passando por sobre as lentes para fins de limpeza.  US6229563 refers to an endoscope for internal inspection of furnaces, consisting of a rigid boom at the end of which, opposite the operator's handle, denotes a camera with sapphire external lens attached to an external control unit, connected to a reproductive device positioned on the operator's helmet. Cooling of the camera boom and end is accomplished by the continuous circulation of water in a jacket, and by an air curtain that takes place in the ring channels that support the camera case passing over the lens for cleaning purposes.
O produto do documento americano, por utilizar uma lança rígida tem como ponto desfavorável a substancial dificuldade no manuseio na parte superior externa do forno, assim como na parte interna cuja varredura é dificuldade pela falta de flexibilidade da lança propriamente dita. Em tempo, o referido manuseio é realizado pelo operador que segura um par de alças na extremidade externa da lança limitando o alcance / profundidade a poucos metros no interior do forno. Por outro lado, o resfriamento hidráulico tem como canal circulação camisa única, portanto expondo todo o volume do fluido ali contido à altas temperaturas do forno, o que, de certa forma, encurta o tempo de permanência da câmera no interior do forno, bem como exige mais do sistema de resfriamento da água. Por fim, mesmo com a ação da cortina de ar, a lente da câmera não está totalmente isenta do fenómeno da condensação e tampouco dos resíduos haja vista que dita cortina se dá diretamente sobre a ocular. The product of the American document, by using a rigid boom, has as its unfavorable point the substantial difficulty in handling the upper outer part of the furnace, as well as the internal part whose scanning is difficult due to the lack of flexibility of the spear itself. In time, such handling is performed by the operator holding a pair of handles at the outer end of the boom limiting the range / depth to a few feet inside the oven. On the other hand, the hydraulic cooling has a single jacket circulation channel, thus exposing the entire volume of fluid contained therein to high oven temperatures, which somewhat shortens the dwell time of the camera inside the oven as well as requires more of the water cooling system. Finally, even with the action of the air curtain, the camera lens is not completely exempt from the phenomenon of condensation nor from the residue since this curtain is directly above the eyepiece.
Obietivos da Invenção Objectives of the Invention
É, portanto, objetivo da presente invenção propor um equipamento endoscópico acompanhado de uma central de controle na qual as imagens serão visualizadas, com destaque para a mobilidade/ maneabilidade consequência do uso de um corpo flexível, e a ótima eficiência no isolamento térmico graças ao resfriamento hidráulico se dar em câmaras distintas e concêntricas, em que a água resfriada circula pela câmara interna até o final da ponteira rígida onde se encontra o compartimento das câmeras, retornando pela câmara externa para as juntas rotativas localizadas no carretel. Consequentemente, esse endoscópio pode ser utilizado na inspeção de fornos de coque de até 10m de profundidade por um período mais prolongado que os modelos conhecidos. Ou seja, o equipamento foi desenvolvido para permitir a realização de uma inspeção visual dentro das câmaras de combustão e dentro dos fornos de coqueria e auxiliar o reparo das paredes destes.  It is therefore an object of the present invention to propose an endoscopic equipment accompanied by a control center in which the images will be viewed, with emphasis on mobility / maneuverability as a result of the use of a flexible body, and the optimum thermal insulation efficiency thanks to cooling. hydraulic power in separate, concentric chambers, where chilled water circulates through the inner chamber to the end of the rigid tip where the camera housing is located, returning through the outer chamber to the rotating joints located on the spool. Consequently, this endoscope can be used to inspect coke ovens up to 10m deep for a longer period than known models. That is, the equipment was developed to allow a visual inspection to be carried out inside the combustion chambers and inside the coke oven and to assist in the repair of their walls.
Na atualidade, é vital a observação das questões ambientais, notadamente quando se fala em equipamentos ou procedimentos que são fontes geradoras de elementos poluentes. Neste sentido, o principal objetivo deste equipamento é permitir a detecção de trincas nas paredes entre as câmaras de combustão e os fornos de coque. Pelas trincas passam as chamas dos queimadores o que aumenta o consumo de carvão. Por outro lado, a queima do carvão em contato direto com as chamas gera gases, conforme tabela abaixo, os quais, através das trincas, são sugados pela chaminé e atirados ao meio ambiente. Estes gases, nocivos ao meio ambiente, são apenas uma parte do prejuízo ambiental, já que, pelas trincas, também é sugada pela chaminé uma grande quantidade de pó de carvão. Today, observing environmental issues is vital, especially when it comes to equipment or procedures that are generating polluting elements. In this sense, the main objective of this equipment is to enable the detection of cracks in the walls between the combustion chambers and coke ovens. Through the cracks pass the flames of the burners which increases the consumption of coal. On the other hand, the burning of coal in direct contact with the flames generates gases, as shown in the table below, which, through the cracks, are sucked into the chimney and thrown into the environment. These gases, which are harmful to the environment, are only part of the environmental damage, as a large amount of coal dust is also sucked into the chimney by cracking.
Tecnicamente, um forno de coqueria inclui 32 (trinta e duas) câmaras de combustão, que vão do número 2 até 32. O equipamento objeto desta invenção, conforme dito, tem em uma linha de objetivo detectar as trincas e auxiliar no reparo das mesmas, evitando as causas danosas, em nível de meio ambiente, promovida pelas trincas. Mais tecnicamente, o presente equipamento permite o reparo das câmaras de número 2 até 32, haja vista que a câmara de número 1 possui particularidades que demandam outro tipo de equipamento, já em desenvolvimento, para atuar na mesma linha do equipamento desta invenção.  Technically, a coke oven includes 32 (thirty-two) combustion chambers, ranging from number 2 to 32. The equipment object of this invention, as stated, has in one objective to detect the cracks and assist in their repair, avoiding harmful causes at the environmental level, promoted by cracking. More technically, the present equipment allows the repair of chambers number 2 to 32, since the number 1 chamber has particularities that require other type of equipment, already under development, to act in the same line of equipment of this invention.
A tabela abaixo mostra os gases comumente lançados pelos fomos de coqueria ao meio ambiente:  The table below shows the gases commonly released by the coke oven gases into the environment:
Composição Química Chemical composition
COG BGás de coqueria
Figure imgf000007_0001
Outro objetivo da invenção é aumentar a vida útil das câmeras e melhorar a qualidade das suas imagens, pela inserção de saídas cónicas por onde é extravasado o ar do sistema de resfriamento. Desse modo, a saída do ar frontal com direcionamento cónico evita que o calor e resíduos do interior do alto forno cheguem até as lentes das câmeras em prejuízo a qualidade da imagem. Indiretamente, como a temperatura das lentes é menor em comparação ao ambiente que está sendo filmado evita-se a condensação das mesmas.
COG Coke oven gas
Figure imgf000007_0001
Another object of the invention is to extend the life of cameras and improve the quality of their images by inserting conical outlets through which air is exhausted from the cooling system. In this way, the conical-directed front air outlet prevents heat and debris from the interior of the blast furnace from reaching the camera lens, impairing image quality. Indirectly, as the temperature of the lens is lower compared to the environment being filmed, the condensation of the lens is avoided.
Também é objetivo da invenção obter máxima robustez e simplicidade construtiva, tanto na ponteira rígida formatada por três tubos concêntricos, quanto no corpo em tubo metálico flexível revestido por trama de aço e camada refratária em cujo interior é conformado por um par de mangueiras igualmente concêntricas para a passagem, respectivamente, de cabeamento/ ar comprimido e água.  It is also an object of the invention to obtain maximum robustness and constructive simplicity, both in the rigid ferrule formed by three concentric tubes and in the flexible metal tube body coated with steel mesh and refractory layer in which it is formed by a pair of equally concentric hoses for the passage, respectively, of cabling / compressed air and water.
Sumário da Invenção Summary of the Invention
Basicamente, o endoscópio é montado em um cavalete sobre rodas dotado de um conjunto de juntas rotativas, que possibilitam a passagem de cabeamento e ar comprimido por meio de mangueira para compartimento das câmeras, assim como a passagem de água refrigerada através de uma segunda mangueira sobreposta àquela em direção a câmara hidráulica interna e o retorno da água a temperatura mais elevada pela câmara hidráulica externa, passando pelo tubo metálico flexível até as juntas rotativas. Sendo assim, o corpo em tubo metálico flexível revestido com trama de aço e camada refratária é composto por duas mangueiras internas e concêntricas, cuja de menor diâmetro se presta à passagem de cabeamentos e ar comprimido em direção ao compartimento onde se encontram uma câmera lateral e outra frontal. O corpo em tubo metálico flexível também compreende uma segunda mangueira mais periférica, que serve para a passagem da água fria até a câmara hidráulica interna, a qual se alonga até o final da ponteira onde se encontra o compartimento das câmeras, promovendo assim ótima isolação térmica. Por fim, o retorno da água segue um caminhamento reverso na câmara hidráulica externa e daí para o corpo em tubo metálico flexível. Por sua vez, a ponteira rígida é conformada por três tubos, formatando assim duas câmaras hidráulicas e um compartimento para recepção das câmeras, sendo este último totalmente isolado a fim de evitar a entrada de água. Já o tubo externo e o tubo intermediário são estanques nas extremidades, o que possibilita a recirculação da água usada no resfriamento. Dessa forma, o compartimento das câmeras sempre ficará externamente em contato com a água da câmara hidráulica interna, que somado ao ar comprimido beneficiam o arrefecimento. As lentes das câmeras são alinhadas com saídas cónicas, as quais evitam o contato direto com o calor, com os resíduos do interior do forno e também impede a condensação haja vista a temperatura das mesmas ser inferior ao do ambiente onde se encontram. Basically, the endoscope is mounted on a wheeled stand with a set of rotating joints, which allow cabling and compressed air to pass through the camera housing, as well as chilled water through a second overlapping hose. towards the inner hydraulic chamber and the return of water at the highest temperature through the outer hydraulic chamber through the flexible metal tube to the rotary joints. Thus, the flexible steel tube body coated with steel wire and refractory layer is composed of two inner and concentric hoses, whose smaller diameter allows the passage of cabling and compressed air towards the compartment where there is a side camera and another front. The flexible metal tube body also comprises a second more peripheral hose which serves to pass from cold water to the inner hydraulic chamber, which extends to the end of the tip where the camera compartment is located, thus promoting optimal thermal insulation. Finally, the water return follows a reverse path in the external hydraulic chamber and thence to the flexible metal tube body. In turn, the rigid tip is made up of three tubes, thus forming two hydraulic chambers and a chamber for receiving the cameras, the latter being completely insulated to prevent water ingress. Already the outer tube and the intermediate tube are watertight at the ends, which allows the recirculation of water used for cooling. In this way, the camera compartment will always be externally in contact with the water from the internal hydraulic chamber, which added to the compressed air benefit the cooling. The camera lenses are aligned with tapered outlets, which prevent direct contact with heat, debris from the oven interior and also prevent condensation as the temperature of the oven is lower than the ambient environment.
Vantagens da Invenção Advantages of the Invention
> Auxílio na eliminação de trincas evitando a transmissão para o meio ambiente de gases altamente tóxicos e alta quantidade de pó de carvão;  > Assist in the elimination of cracks avoiding the transmission to the environment of highly toxic gases and high amount of coal dust;
> Maior tempo de permanência no interior do forno sem necessidade de redução da temperatura de operação - no mínimo 30 minutos, tempo suficiente para visualizar todo o interior;  > Longer stay inside the oven without reducing the operating temperature - at least 30 minutes, enough time to see the entire interior;
> A flexibilidade do corpo possibilita trabalhar manualmente nas diminutas áreas superiores dos fornos com até 10m de profundidade;  > The body flexibility makes it possible to work manually in the small upper areas of the ovens up to 10m deep;
> A operação manual, contrapondo a operação mecanizada, permite mudanças repentinas de velocidade e/ ou de posicionamento do endoscópio propiciando uma melhor geração de imagem do interior do forno; As câmeras contrapostas operando simultaneamente facilitam a localização de possíveis defeitos internos, com a redução da quantidade de introduções do endoscópio nos fornos; > Manual operation, as opposed to mechanized operation, allows sudden changes in speed and / or positioning of the endoscope providing better imaging of the furnace interior; Simultaneously operating opposing cameras make it easy to find possible internal defects by reducing the number of endoscope introductions into the furnaces;
> Maior vida útil das câmeras/ lentes que ficam protegidas do calor, isentas de resíduos e imunes ao fenómeno da condensação;  > Longer life of cameras / lenses that are protected from heat, free of debris and immune to condensation;
> O tempo de permanência aliado ao comprimento do corpo flexível permitem examinar até a base do forno, com imagem de alta resolução possibilitando melhor detecção de desgastes.  > The residence time combined with the length of the flexible body allows to examine up to the base of the oven, with high resolution image allowing better wear detection.
Descrição das figuras  Description of the figures
A seguir, explica-se a invenção com referência aos desenhos anexos, nos quais estão representadas de forma ilustrativa e não limitativa:  The following explains the invention with reference to the accompanying drawings, in which they are illustrated by way of illustration and not limitation:
Fig. 1 : Vista em perspectiva do endoscópio flexível com resfriamento hidráulico e pneumático para inspeção de baterias de fornos de coque;  Fig. 1: Perspective view of hydraulic and pneumatic-cooled flexible endoscope for inspection of coke oven batteries;
Fig. 2: Vista em perspectiva explodida do endoscópio flexível com resfriamento hidráulico e pneumático para inspeção de baterias de fornos de coque;  Fig. 2: Exploded perspective view of hydraulic and pneumatic-cooled flexible endoscope for inspection of coke oven batteries;
Fig. 3: Vista em corte esquemático do carretel e juntas rotativas do endoscópio flexível com resfriamento hidráulico e pneumático para inspeção de baterias de fornos de coque;  Fig. 3: Schematic sectional view of hydraulic and pneumatic-cooled flexible endoscope spool and rotary joints for inspection of coke oven batteries;
Fig. 4: Vista em corte esquemático de parte do corpo em tubo metálico flexível e da ponteira rígida do endoscópio flexível com resfriamento hidráulico e pneumático para inspeção de baterias de fornos de coque;  Fig. 4: Schematic sectional view of the flexible metal tube body part and the rigid tip of the hydraulic and pneumatic-cooled flexible endoscope for inspection of coke oven batteries;
Fig. 5: Vista em corte esquemático mostrando o fluxo de ar e água do endoscópio flexível com resfriamento hidráulico e pneumático para inspeção de baterias de fornos de coque.  Fig. 5: Schematic sectional view showing the air and water flow of the hydraulic and pneumatic-cooled flexible endoscope for inspection of coke oven batteries.
Descrição Detalhada da Invenção O "ENDOSCÓPIO FLEXÍVEL COM RESFRIAMENTO HIDRÁULICO E PNEUMÁTICO PARA INSPEÇÃO DE BATERIAS DE FORNOS DE COQUE", objeto desta solicitação de Patente de Invenção, consiste essencialmente de um endoscópio (1 ) montado em um carretel (2) com juntas rotativas (3 e 4) onde é enrolado o corpo em tubo flexível (5), que é dotado de duas mangueiras internas (6 e 7) e concêntricas para a passagem, respectivamente, de cabeamento (8)/ ar comprimido (9) e água refrigerada (10) em direção a ponteira rígida (11 ), que formata uma câmera hidráulica externa (12) e outra câmera hidráulica interna (13), além do compartimento (14) para acondicionamento da câmera lateral (15) e da câmera frontal (16) devidamente arrefecidas pelo sistema de refrigeração e com saídas de ar cónicas (17). Detailed Description of the Invention The "FLEXIBLE HYDRAULIC AND PNEUMATIC COOLING ENDOSCOPE FOR COKE OVEN BATTERY INSPECTION", object of this patent application, consists essentially of an endoscope (1) mounted on a spool (2) with rotating joints (3 and 4) where the hose body (5) is coiled, which is provided with two inner hoses (6 and 7) and concentric for the passage of cabling (8) / compressed air (9) and chilled water (10) respectively. direction the rigid tip (11), which forms an external hydraulic camera (12) and another internal hydraulic camera (13), as well as the side camera (15) and front camera (16) housing, properly cooled by the cooling system and conical air vents (17).
Mais particularmente, o endoscópio (1 ) inventado compreende um corpo em tubo metálico flexível (5) revestido por trama de aço (A) e camada refratária (B), que é enrolado em um carretel (2) estruturado em um cavalete (C) para colocação dos equipamentos eletrônicos de imagem, e com juntas rotativas (3 e 4) devidamente interligadas as mangueiras internas (6 e 7) do referido corpo em tubo metálico flexível (5) em cuja extremidade se pronuncia uma ponteira rígida (1 1 ) onde estão uma câmera lateral (15) e outra câmera frontal (16), que mediante adequada refrigeração e arrefecimento podem ser colocadas no interior dos fornos de coque por períodos mais prolongados, sendo o manuseio facilitado pela flexibilidade do produto. A junta rotativa central (4) tem em uma extremidade uma entrada (18) para o cabeamento (8) e ar comprimido (9), que ao passarem por uma conexão (19) intermediária seguem para a junta rotativa superior (3) e daí tomando lugar na mangueira interna (6) de menor diâmetro contida no corpo em tubo metálico flexível (5). Por outro lado, a extremidade distai da junta rotativa central (4) apresenta uma entrada (20) de água refrigerada (10), que de igual forma passa por conexão intermediária (21 ) seguindo para a mangueira de maior diâmetro (7) contida no corpo do tubo metálico flexível (5). A extremidade distai supracitada também possui uma saída (22) da água aquecida (23) que retorna da ponteira fixa (1 1 ) no entremeio (24) do corpo em tubo metálico (5) flexível e da mangueira (7), perfazendo um caminho reverso na junta rotativa superior (3). Depois de desenrolado, o corpo em tubo metálico (5) flexível revestido por trama de aço (A) e camada refratária (B) é facilmente manuseado na parte de cima do forno, com total mobilidade da ponteira rígida (11) em seu interior. Finalmente, a ponteira rígida (1 1 ) é conformada por três tubos (25, 26 e 27) de montagem concêntrica, formatando assim uma câmara hidráulica interna (13) interligada a mangueira (7) de água refrigerada (10), outra câmara hidráulica externa (12) ligada ao corpo em tubo metálico flexível (5) e o compartimento (14) das câmeras (15 e 16) com as saídas (17) de ar cónico, sendo este último totalmente isolado a fim de evitar a entrada de água. O tubo externo (25) e o tubo intermediário (26) são fechados nas extremidades (28), o que possibilita a recirculação da água usada no resfriamento, ou seja, da água refrigerada (10) na câmara hidráulica interna (13) e da água aquecida (23) pela câmera hidráulica externa (12). Dessa forma, o compartimento (14) das câmeras sempre ficará externamente em contato com a água da câmara hidráulica interna (13), que somado ao ar comprimido (9) beneficiam o arrefecimento. As lentes das câmeras (15 e 16) alinhadas com saídas (17) cónicas, evitam o contato das lentes direto com o calor, com os resíduos do interior do forno e também impede a condensação das mesmas haja vista a temperatura ser inferior ao do ambiente onde se encontram. More particularly, the invented endoscope (1) comprises a flexible steel tube body (5) coated with steel web (A) and refractory layer (B), which is wound on a spool (2) structured on an easel (C) for the placement of electronic imaging equipment, and with rotating joints (3 and 4) properly interconnected the inner hoses (6 and 7) of said body in flexible metal tube (5) at whose end is pronounced a rigid ferrule (1 1) where There is a side camera (15) and another front camera (16), which through adequate cooling and cooling can be placed inside the coke ovens for longer periods, the handling facilitated by the flexibility of the product. The central rotary joint (4) has at one end an inlet (18) for the cabling (8) and compressed air (9), which when passing through an intermediate connection (19) go to the upper rotary joint (3) and thence taking place in the smaller diameter inner hose (6) contained in the flexible metal tube body (5). On the other hand, the distal end of the central rotary joint (4) it has an inlet (20) of chilled water (10), which also passes through an intermediate connection (21) leading to the larger diameter hose (7) contained in the flexible metal tube body (5). The aforesaid distal end also has an outlet (22) of the heated water (23) which returns from the fixed nozzle (11) to the intercept (24) of the flexible metal tube body (5) and the hose (7), making a path reverse on the upper rotary joint (3). Once unrolled, the flexible steel tube body (5) lined with steel mesh (A) and refractory layer (B) is easily handled on the top of the oven, with full mobility of the rigid ferrule (11) inside. Finally, the rigid end (11) is formed by three concentric mounting tubes (25, 26 and 27), thus forming an internal hydraulic chamber (13) interconnected with the chilled water hose (7), another hydraulic chamber (12) connected to the flexible metal tube body (5) and the chamber (14) of the cameras (15 and 16) with the conical air vents (17), the latter being completely insulated to prevent water ingress . The outer tube (25) and the intermediate tube (26) are closed at the ends (28), which makes it possible to recirculate the cooling water (ie, the chilled water (10) in the internal hydraulic chamber (13) and the heated water (23) by the external hydraulic camera (12). Thus, the chamber compartment (14) will always be externally in contact with water from the internal hydraulic chamber (13), which added to the compressed air (9) benefit the cooling. The camera lenses (15 and 16) aligned with tapered outlets (17) prevent direct contact of the lens with heat and debris from the oven interior and also prevent condensation from occurring as the temperature is below ambient. where they are.

Claims

REIVINDICAÇÕES
1) "ENDOSCÓPIO FLEXÍVEL COM RESFRIAMENTO HIDRÁULICO E PNEUMÁTICO PARA INSPEÇÃO DE BATERIAS DE FORNOS DE COQUE" caracterizado por ter um corpo em tubo metálico flexível (5) revestido por uma trama de aço (A) e uma camada refratária (B); mangueiras (6 e 7) são posicionadas concentricamente no corpo em tubo metálico flexível (5) em cuja extremidade se pronuncia uma ponteira rígida (11) onde estão uma câmera lateral (15) e outra câmera frontal (16) refrigeradas e arrefecidas para colocação alongada no interior dos fomos; a ponteira rígida (11) formatada por tubos (25, 26 e 27) conforma uma câmara hidráulica interna (13) interligada a mangueira (7) de água refrigerada (10), outra câmara hidráulica externa (12) ligada ao corpo em tubo metálico flexível (5) e o compartimento (14) das câmeras (15 e 16) com as saídas (17) de ar cónicas.  1) "FLEXIBLE HYDRAULIC AND PNEUMATIC COOLING ENDOSCOPE FOR COKE OVEN BATTERY INSPECTION" characterized by having a flexible metal tube body (5) lined with a steel mesh (A) and a refractory layer (B); hoses (6 and 7) are concentrically positioned on the flexible metal tube body (5) at the end of which is a rigid ferrule (11) where there is a cooled and cooled side camera (15) and front camera (16) for extended placement within we went; the rigid nozzle (11) formed by tubes (25, 26 and 27) form an internal hydraulic chamber (13) interconnected with chilled water hose (7) (10), another external hydraulic chamber (12) connected to the metal tube body (5) and the housing (14) of the cameras (15 and 16) with the conical air vents (17).
2) "ENDOSCÓPIO FLEXÍVEL COM RESFRIAMENTO HIDRÁULICO E PNEUMÁTICO PARA INSPEÇÃO DE BATERIAS DE FORNOS DE COQUE" de acordo com a reivindicação 1 caracterizado por um carretel (2) conter umas juntas rotativas (3 e 4) devidamente interligadas às mangueiras (6 e 7) e ao corpo em tubo metálico flexível (5).  2) "FLEXIBLE HYDRAULIC AND PNEUMATIC COOLING ENDOSCOPE FOR COOK OVEN BATTERY INSPECTION" according to claim 1, characterized in that a spool (2) contains rotary joints (3 and 4) properly connected to the hoses (6 and 7) and to the flexible metal tube body (5).
3) "ENDOSCÓPIO FLEXÍVEL COM RESFRIAMENTO HIDRÁULICO E PNEUMÁTICO PARA INSPEÇÃO DE BATERIAS DE FORNOS DE COQUE" de acordo com a reivindicação 2 caracterizado pela junta rotativa central (4) ter uma entrada (18) para o cabeamento (8) e ar comprimido (9) que seguem para a junta rotativa superior (3) e daí tomando lugar na mangueira interna (6) que se prolonga até o compartimento das câmeras (15 e 16).  3) "FLEXIBLE HYDRAULIC AND PNEUMATIC COOLING ENDOSCOPE FOR COKE OVEN BATTERY INSPECTION" according to claim 2, characterized in that the central rotary joint (4) has an inlet (18) for cabling (8) and compressed air (9 ) leading to the upper rotary joint (3) and thereafter taking place in the inner hose (6) extending to the chamber housing (15 and 16).
4) "ENDOSCÓPIO FLEXÍVEL COM RESFRIAMENTO HIDRÁULICO E PNEUMÁTICO PARA INSPEÇÃO DE BATERIAS DE FORNOS DE COQUE" de acordo com a reivindicação 2 caracterizado pela junta rotativa central (4) apresentar uma entrada (20) de água refrigerada (10) que segue para a mangueira de maior diâmetro (7) e daí para a câmara interna (13). 4) "FLEXIBLE ENDOSCOPE WITH HYDRAULIC AND PNEUMATIC COOLING FOR INSPECTION OF COKE OVEN BATTERIES" Claim 2, characterized in that the central rotary joint (4) has an inlet (20) of chilled water (10) which runs to the larger diameter hose (7) and thence to the inner chamber (13).
5) "ENDOSCÓPIO FLEXÍVEL COM RESFRIAMENTO HIDRÁULICO E PNEUMÁTICO PARA INSPEÇÃO DE BATERIAS DE FORNOS DE COQUE" de acordo com a reivindicação 2 caracterizado pela junta rotativa central (4) possuir uma saída (22) da água aquecida (23) que retorna da ponteira fixa (1 1) no entremeio (24) do corpo em tubo metálico flexível e da mangueira (7), perfazendo um caminho reverso na junta rotativa superior (3).  5) "FLEXIBLE HYDRAULIC AND PNEUMATIC COOLING ENDOSCOPE FOR COKE OVEN BATTERY INSPECTION" according to claim 2, characterized in that the central rotary joint (4) has an outlet (22) of heated water (23) which returns from the fixed tip (11) at the interlocking (24) of the flexible metal tube body and hose (7), making a reverse path in the upper rotary joint (3).
6) "ENDOSCÓPIO FLEXÍVEL COM RESFRIAMENTO HIDRÁULICO E PNEUMÁTICO PARA INSPEÇÃO DE BATERIAS DE FORNOS DE COQUE" de acordo com a reivindicação 1 caracterizado pelos tubos (25, 26 e 27) de montagem concêntrica conformarem as câmaras ( 2 e 13) e o compartimento (14) estanque.6) "FLEXIBLE HYDRAULIC AND PNEUMATIC COOLING ENDOSCOPE FOR COKE OVEN BATTERY INSPECTION" according to claim 1, characterized in that the concentric mounting tubes (25, 26 and 27) conform to the chambers (2 and 13) and the housing ( 14) watertight.
7) "ENDOSCÓPIO FLEXÍVEL COM RESFRIAMENTO HIDRÁULICO E PNEUMÁTICO PARA INSPEÇÃO DE BATERIAS DE FORNOS DE COQUE" de acordo com a reivindicação 6 caracterizado pelo tubo externo (25) e o tubo intermediário (26) serem fechados nas extremidades (28), o que possibilita a recirculação da água usada no resfriamento. 7) "FLEXIBLE HYDRAULIC AND PNEUMATIC COOLING ENDOSCOPE FOR COKE OVEN BATTERY INSPECTION" according to claim 6 characterized in that the outer tube (25) and the intermediate tube (26) are closed at the ends (28), which enables the recirculation of water used for cooling.
8) "ENDOSCÓPIO FLEXÍVEL COM RESFRIAMENTO HIDRÁULICO E PNEUMÁTICO PARA INSPEÇÃO DE BATERIAS DE FORNOS DE COQUE" de acordo com a reivindicação 1 caracterizado pelo carretel (2) ser estruturado em um cavalete (C) para colocação dos equipamentos eletrônicos de imagem.  8) "FLEXIBLE HYDRAULIC AND PNEUMATIC COOLING ENDOSCOPE FOR COKE OVEN BATTERY INSPECTION" according to claim 1, characterized in that the spool (2) is structured on an easel (C) for the placement of electronic imaging equipment.
PCT/BR2013/000116 2012-11-06 2013-04-12 Flexible endoscope with hydraulic and pneumatic cooling for inspecting coke oven batteries WO2014071472A1 (en)

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BR102012028339A BR102012028339B1 (en) 2012-11-06 2012-11-06 hydraulic and pneumatic-cooled flexible endoscope for coke oven battery inspection
BRBR1020120283395 2012-11-06

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB517818A (en) * 1938-08-03 1940-02-09 Woodall Duckham 1920 Ltd Device for viewing the interiors of heated enclosures
WO1997045761A1 (en) * 1996-05-30 1997-12-04 Centre De Pyrolyse De Marienau 'cpm' Endoscopic inspection sensor for coke oven batteries
US6229563B1 (en) * 1998-07-14 2001-05-08 Fosbel International Limited Camera insertion into a furnace

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB517818A (en) * 1938-08-03 1940-02-09 Woodall Duckham 1920 Ltd Device for viewing the interiors of heated enclosures
WO1997045761A1 (en) * 1996-05-30 1997-12-04 Centre De Pyrolyse De Marienau 'cpm' Endoscopic inspection sensor for coke oven batteries
US6229563B1 (en) * 1998-07-14 2001-05-08 Fosbel International Limited Camera insertion into a furnace

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