42results about How to "Realize dynamic protection" patented technology

The invention discloses a shell-and-tube heat exchanger. By the shell-and-tube heat exchanger, heat exchange between two types of liquid can be implemented effectively; the shell-and-tube heat exchanger has temperature difference compensation ability; and the circumstance that the heat exchanger is damaged due to over large temperature difference stress between a shell and heat exchanging tubes can be avoided. The shell-and-tube heat exchanger comprises a tube pass portion, a shell pass portion and a plurality of supports, wherein the tube pass portion comprises a tube pass inlet tube, a tube pass outlet tube and a plurality of heat exchanging tubes; the shell pass portion comprises a heat exchanger outer shell, a shell pass inlet tube and a shell pass outlet tube; the heat exchanger outer shell consists of an end socket, a shell head and a channel; a fixing tube plate is arranged between the shell head and the channel; an end socket tube plate is arranged between the end socket and the channel; the inside of the shell head is divided into a tube pass flow inlet cavity and a tube pass flow outlet cavity by a tube pass flow separating plate; and the channel is provided with an expansion joint. The shell-and-tube heat exchanger has the advantages that the position of the expansion joint easily deforms, a structural temperature difference compensating effect is achieved by the slidable end socket tube plate, and structural damage caused by over large temperature difference stress is avoided.

The invention discloses a heat exchanger. The heat exchanger can effectively realize the heat exchange between two fluids, and has the temperature difference compensating ability, and can prevent the damage caused by too big temperature difference stress between a shell body and a heat exchange pipe. The heat exchanger comprises a tube pass part, a shell pass part, and several brackets; the tube pass part comprises a tube pass inlet tube, a tube pass outlet tube, and a plurality of heat exchange tubes; the shell pass part includes an outer shell body of the heat exchanger, a shell pass inlet tube, and a shell pass outlet tube; the outer shell body of the heat exchanger is composed of an enclosure head, a shell head and a tube box; a fixing tube plate is arranged between the shell head and the tube box, and an enclosure head tube plate is arranged between the enclosure head and the tube box; a tube pass flow isolating plate partitions the inner part of the shell body into a tube pass inflow cavity and a tube pass outflow cavity; an expansion joint is arranged on the tube box. The heat exchanger has the following beneficial effects: through the characteristics of relatively easy deformation of the expansion joint, and cooperation of the slideable enclosure tube plate, the heat exchanger can play a role of structural temperature compensation, and avoid the structural damage caused by too big temperature difference stress.

The invention discloses a dynamic management method and device of a security mechanism. The method includes the steps of extracting subject attributes and object attributes of an access data stream; according to a preset ternary relationship and the subject attributes and object attributes of the access data stream, determining security mechanism components required by the access data stream, wherein the ternary relationship is a relationship among the subject attributes, the object attributes and security mechanism attributes; recombining the determined security mechanism components to generate a security protection system. In this way, the dynamic protection of internet services is achieved, accordingly the internet services and the security protection mechanism of an internet-based information system are more targeted, and the security protection capability of the internet services or the internet-based information system is also improved.

The invention discloses a shell-and-tube heat exchanger. By the shell-and-tube heat exchanger, heat exchange between two types of liquid can be implemented effectively; the shell-and-tube heat exchanger has temperature difference compensation ability; and the circumstance that the heat exchanger is damaged due to over large temperature difference stress between a shell and heat exchanging tubes can be avoided. The shell-and-tube heat exchanger comprises a tube pass portion, a shell pass portion and a plurality of supports, wherein the tube pass portion comprises a tube pass inlet tube, a tube pass outlet tube and a plurality of heat exchanging tubes; the shell pass portion comprises a heat exchanger outer shell, a shell pass inlet tube and a shell pass outlet tube; the heat exchanger outer shell consists of an end socket, a shell head and a channel; a fixing tube plate is arranged between the shell head and the channel; an end socket tube plate is arranged between the end socket and the channel; the inside of the shell head is divided into a tube pass flow inlet cavity and a tube pass flow outlet cavity by a tube pass flow separating plate; and the channel is provided with an expansion joint. The shell-and-tube heat exchanger has the advantages that the position of the expansion joint easily deforms, a structural temperature difference compensating effect is achieved by the slidable end socket tube plate, and structural damage caused by over large temperature difference stress is avoided.

The invention discloses a chemical engineering heat exchanger and aims to provide a heat exchanger which can effectively realize heat exchange between two liquors, has capability of temperature difference compensation and can be prevented from being damaged due to excessively large temperature difference stress between a shell and heat exchange tubes. The chemical engineering heat exchanger comprises a tube pass part, a shell pass part and a plurality of brackets, wherein the tube pass part comprises a tube pass inlet tube, a tube pass outlet tube and the plurality of heat exchange tubes; the shell pass part comprises a heat exchanger shell body, a shell pass inlet tube and a shell pass outlet tube; the heat exchanger shell body comprises a seal head, a shell head and a tube box; a fixed tube plate is arranged between the shell head and the tube box; a seal head tube plate is arranged between the seal head and the tube box; a tube pass flow baffle is used for dividing the interior of the shell head into a tube pass inflow cavity and a tube pass outflow cavity; an expansion joint is arranged on the tube box. The chemical engineering heat exchanger has the benefits that a structural temperature difference compensation effect can be achieved in combination with the slidable seal head tube plate based on a characteristic of easiness for deformation at the expansion joint, and structural damage caused by excessively large temperature difference stress is avoided.

The invention discloses a tube-shell type double-liquid heat exchange device and aims to provide a heat exchange device which can effectively achieve heat exchange between two types of liquid, has temperature difference compensation capacity and can be prevented from being damaged due to over-large temperature difference stress between a shell and a heat exchange tube. The tube-shell type double-liquid heat exchange device comprises a tube pass part, a shell pass part and a plurality of brackets, wherein the tube pass part comprises a tube pass inlet tube, a tube pass outlet tube and a plurality of heat exchange tubes; the shell pass part comprises an outer heat exchanger shell, a shell pass inlet tube and a shell pass outlet tube; the outer heat exchanger shell consists of a sealing head, a shell head and a tube box; a fixed tube plate is arranged between the shell head and the tube box; a sealing head tube plate is arranged between the sealing head and the tube box; a tube pass flow partition plate partitions the interior of the shell head into a tube pass inflow cavity and a tube pass outflow cavity; an expansion joint is arranged on the tube box. The tube-shell type double-liquid heat exchange device has the beneficial effects that according to the characteristic hat the expansion joint is relatively easy to deform, by the cooperation of the slidable sealing head tube plate, the structural temperature difference compensation effect can be achieved, and the structural damage caused by over-large temperature difference stress is avoided.

The invention discloses a heat exchanging device for chemical industry, and aims to provide a heat exchanging device which can effectively realize the heat exchange of two kinds of liquid, has the capability of compensating for temperature difference, and can prevent the damage of a shell due to the excessive differential temperature stress between the shell and a heat exchanging tube. The heat exchanging device comprises a tube pass part, a shell pass part and a plurality of supports, wherein the tube pass part comprises a tube-pass inlet tube, a tube-pass outlet tube and a plurality of heat exchanging tubes; the shell pass part comprises an outer shell of the heat exchanging device, a shell-pass inlet tube and a shell-pass outlet tube; the outer shell of the heat exchanging device consists of an end cap, a shell head and a tube box, a fixing tube plate is arranged between the shell head and the tube box, an end-cap tube plate is arranged between the end cap and the tube box, a tube-pass flow partition plate divides the inside of the shell head into a tube-pass flow inlet cavity and a tube-pass flow outlet cavity, and an expansion joint is arranged on the tube box. The heat exchanging device disclosed by the invention has the benefits that through the characteristic that the expansion joint is relatively easy to deform, the end-cap tube plate which can slide is matched, so that the heat exchanging device has a structural effect of compensating for temperature difference, and the structural damage due to the excessive differential temperature stress can be avoided.

The invention discloses a tube-shell type heat exchange device and aims to provide a heat exchange device which can effectively achieve heat exchange between two types of liquid, has temperature difference compensation capacity and can be prevented from being damaged due to over-large temperature difference stress between a shell and a heat exchange tube. The tube-shell type heat exchange device comprises a tube pass part, a shell pass part and a plurality of brackets, wherein the tube pass part comprises a tube pass inlet tube, a tube pass outlet tube and a plurality of heat exchange tubes; the shell pass part comprises an outer heat exchanger shell, a shell pass inlet tube and a shell pass outlet tube; the outer heat exchanger shell consists of a sealing head, a shell head and a tube box; a fixed tube plate is arranged between the shell head and the tube box; a sealing head tube plate is arranged between the sealing head and the tube box; a tube pass flow partition plate partitions the interior of the shell head into a tube pass inflow cavity and a tube pass outflow cavity; an expansion joint is arranged on the tube box. The tube-shell type heat exchange device has the beneficial effects that according to the characteristic hat the expansion joint is relatively easy to deform, by the cooperation of the slidable sealing head tube plate, the structural temperature difference compensation effect can be achieved, and the structural damage caused by over-large temperature difference stress is avoided.