JP3993596B2 - Internal surface cleaning apparatus and container internal surface cleaning method - Google Patents

Abstract

A shockwave cleaning apparatus cleans one or more surfaces within a vessel A sensor (206, 208) senses one or more thermodynamic properties associated with the vessel (200). A control system (214) is coupled to an initiator and a fuel/oxidizer source to control the firing of the apparatus responsive to input from the sensor (206, 208). <IMAGE>

Description

  The present invention relates to industrial equipment, and more particularly to detonative cleaning of industrial equipment.

Surface fouling is a significant problem in industrial equipment. Such equipment includes furnaces (such as coal, petroleum, waste), boilers, gasifiers, reactors, heat exchangers, and the like. Typically, industrial equipment includes a vessel with an internal heat exchange surface on which more concentrated attachments such as fouling or slag and / or fouling due to accumulation of particles of soot, ash, minerals, etc. Kimono is likely to occur. Such particle deposition can gradually hinder the operation of the facility, reducing efficiency and throughput and causing damage. Thus, cleaning equipment is highly desirable, but with some associated problems. In many cases, direct access to the fouling surface is difficult. Furthermore, it is desirable to minimize the downtime associated with cleaning to maintain revenue. Various techniques have been proposed so far. As examples, Patent Documents 1 to 3 describe various techniques. Another technique is disclosed in Non-Patent Document 1. Non-Patent Documents 2 and 3 describe specific explosion wave techniques. Such an apparatus is also described in US Pat. These devices are often referred to as “soot blowers” because of the primary application of this technology.
US Pat. No. 5,494,004 US Pat. No. 6,438,191 US Patent Application No. 2002/0112638 Yugoslavia Patent No. P1756 / 88 Specification Yugoslavia Patent No. P1728 / 88 Specification Hugh zet. (Huque, Z.), "Experimental Investigation of Slag Removal Using Pulse Detonation Wave Technique, 19th Annual DOE / HBCU / Miami 19th Annual Symposium". March 16-18 Hanjalic Kay. (Hanjalic, K.) and Samajevik Eye. (Smajevic, I.), Cleaning of boiler heating surfaces using detonation waves (Further Experience Waves for Cleaning Boiler Heating Surfaces), International Energy Research Journal Vol. 17 (International Journal of Renewal Energy). 1993, p. 583-595 Hanjalic Kay. (Hanjalic, K.) and Samajevik Eye. (Smajevic, I.), “Detonation-Wave Technology for On-load Deposition of Surfaces Exposed to Foaling I, II to remove deposits from fouling surface during loading. , Gas Turbine and Power Engineering Journal, ASME Bulletin Vol. 1 (Journal of Engineering for Gas Turbines and Power, Transactions of the ASME, Vol. 1), January 1994, p. 223-236

  Regardless of the technology described above, further improvements are sought in the art.

  One aspect of the invention includes a cleaning device for one or more interior surfaces of a container having a container wall and a wall opening that separates the exterior and interior of the container. An elongate conduit has a first end upstream and a second end downstream, and is arranged to direct a shock wave from the second end into the container. A source of fuel and oxidant is coupled to the line to supply fuel and oxidant to the line. An igniter is arranged to initiate the reaction of fuel and oxidant to generate a shock wave. A sensor detects one or more thermodynamic properties associated with the container. A control device is connected to the igniter, the source, and the sensor.

  In various embodiments, a plurality of sensors may be included including at least one temperature sensor and at least one pressure sensor. The sensor may include at least one thermocouple provided in a pipe line or a container, and at least one infrared sensor. The at least one infrared sensor can include an infrared camera. The sensor may include at least one combustion exhaust sensor. Multiple lines and igniters may be included, each line being associated with one or more associated igniters. The controller may include a plurality of local controllers, each associated with and connected to one of the associated igniters. The controller may further include a central controller connected to the plurality of local controllers. The central controller is programmable to generate maintenance or service requests in response to input. The control device is also programmable to communicate with the remote monitoring device. The controller is programmable to control the operation of the pipeline in response to input from the sensor. In addition, the controller can be programmed with a plurality of different cleaning processes to perform the process in response to corresponding detection conditions. An image inspection camera can be connected to the controller for visual monitoring of the interior of the container.

  Another aspect of the invention includes a monitoring device for monitoring the operation of a plurality of remote detonation cleaning devices. A communication interface communicates with the cleaning device. At least one of the memory and the processor receives data from the cleaning device and stores instructions for recording information about the cleaning device.

  In various embodiments, at least one of the processor and the memory can store instructions for operating the cleaning apparatus. The monitoring device can include one or more display devices. At least one of the one or more display devices is connectable to allow display of the video camera input for at least some time. The monitoring device can be used in combination with a plurality of cleaning devices. The cleaning apparatus can include a plurality of cleaning systems. Each cleaning system may include a plurality of combustion lines and a plurality of local control modules each associated with one of the predetermined combustion lines. The scrubbing system includes a fuel and oxidant source coupled to the combustion line, a common controller coupled to the plurality of local control modules and configured to provide data to the monitoring device , May further be included.

  Still another aspect of the present invention includes a method for cleaning the inner surface of a plurality of containers at a plurality of positions. At the central location, data for each container is monitored. In response to the monitored data for one of the specific containers, a detonation cleaning device release associated with the specific container is triggered to clean the interior surface of the specific container.

  In various embodiments, the method selects at least one of a plurality of predetermined washing protocols in response to the monitored data and causes a release in response to the selected protocol. Can be executed by a programmed control and monitoring device. The above method can be performed repeatedly and continuously. An infrared camera may be used within each container to monitor the relevant surfaces during container operation. The monitoring can include at least one of monitoring emissivity of the interior surface of the container, monitoring an image of the interior of the container, and monitoring the amount of chemical species within the container. The method may also include receiving an automated maintenance or service request for at least one container. This requirement may be specific to one cleaning device or may be for the whole.

  The details of one or more examples of the invention are set forth in the accompanying drawings and the embodiments below. Other features, objects, and advantages of the invention will be apparent from the embodiments and drawings, and from the claims.

  FIG. 1 illustratively shows a furnace 20 having three associated soot blowers 22. In the illustrated embodiment, the furnace vessel is in the shape of a cuboid and the soot blowers are all associated with a single common wall 24 of the vessel and are arranged at a similar height along the wall. Other configurations are possible (such as a single soot blower, one or more soot blowers each provided at multiple heights).

  Each soot blower 22 includes an elongated combustion line 26 extending from an upstream distal end 28 remote from the furnace wall 24 to a downstream proximal end 30 proximate the wall 24. However, the end 30 can also be provided completely inside the furnace. During the operation of each soot blower 22, the combustion of the fuel / oxidant mixture in line 26 begins near the upstream end (within 10% from the upstream of the line length), and the surface within the internal volume of the furnace is A detonation wave is generated that is released as a shock wave along with the associated combustion gas from the downstream end for cleaning. Each soot blower 22 can be associated with a fuel / oxidant source 32. Such a source, or one or more parts thereof, can be shared between separate soot blowers 22. The exemplary source 32 includes a liquefied or pressurized gaseous fuel cylinder 34 and an oxygen cylinder 36 provided in corresponding containment structures 38, 40. In an exemplary embodiment, the oxidant is a first oxidant such as substantially pure oxygen. The second oxidant may be factory air supplied from a central air supply 42. In the exemplary embodiment, air is stored in the air accumulator 44. The expanded fuel from the cylinder 34 is generally stored in a fuel accumulator 46. The exemplary sources 32 are each connected to the associated conduit 26 by appropriate piping located below. Similarly, the soot blowers 22 each include an ignition box 50 that initiates combustion of the fuel oxidant mixture, which is controlled by a control and monitoring device (not shown) along with the supply source 32. FIG. 1 shows that the wall 24 includes several ports for inspection and / or measurement. Exemplary ports include an optical monitoring port 54 and a temperature monitoring port 56 associated with each soot blower 22, which are infrared and / or for observation of the surface to be cleaned and internal temperature monitoring. Accepts a visible light video camera and a thermocouple probe, respectively. Other probes / monitoring / sampling may be utilized for pressure monitoring, composition sampling, and the like.

FIG. 2 shows other details of an exemplary soot blower 22. An exemplary detonation conduit 26 includes a series of conduit portions or conduit segments 60 with flanges on both sides arranged from upstream to downstream, and a downstream portion 64 extending through a wall opening 66. And a downstream nozzle line portion that terminates at the downstream outlet 30 that is exposed to the interior 68 of the furnace, that is, a downstream nozzle line segment 62. The term nozzle is widely used and does not require the presence of aerodynamic contraction, expansion, or a combination thereof. An exemplary conduit segment material is a metal (such as stainless steel). An outlet 30 can be provided deeper in the furnace if adequate support and cooling is provided. FIG. 2 further shows tube bundles 70 inside the furnace, and fouling is likely to occur on the outer surface of these tube bundles. In the exemplary embodiment, the conduit segments 60 are each supported on an associated trolley 72 and the wheels of the trolley 72 engage a track device 74 provided along the floor 76 of the facility. The exemplary track device 74 includes a pair of parallel rails that engage the concave peripheral surface of the wheel of the trolley 72. Exemplary segment 60 is similar in length L _1, and is bolted in series by columns of the corresponding corresponding bolt provided on the bolt holes in the flange. Similarly, the downstream flange of the most downstream segment 60 is bolted to the upstream flange of the nozzle 62. In an exemplary embodiment, a reaction strap 80 (e.g., cotton or a thermally / structurally rugged synthetic material) includes one or more metal coil reaction springs 82 and a last coupled flange pair. Environmental structures such as combustion lines and furnace walls that are connected in series and elastically absorb reaction forces associated with the discharge of the soot blower 22 and are accurately positioned in the next ignition. And connect. Further, an additional attenuation means (not shown) can be provided. The reaction strap / spring combination can be configured in series or as a loop. In the exemplary embodiment, the overall length of the combined downstream section is L _2. Another elastic recoil absorbing means may include a non-metallic or non-coiled spring or rubber or other elastic element, at least partially by tension, compressive force, and / or shear force, such as a pneumatic recoil absorber. It is advantageous to be elastically deformed.

Predetonator conduit section / segment 84, from the upstream end portion 28 extends downstream, it is possible also in this predetonator Todorokikanro segment comprising a flange on both sides, it has a length L _3. The pre-explosive soot line segment 84 is smaller than the characteristic internal cross-sectional area (eg, average, median, mode, etc.) of the downstream portions 60, 62 of the combustion line (line axis / centerline of the line) Characteristic internal cross-sectional area (crossing 500). In an exemplary embodiment that includes a circular cross-section conduit segment, the pre-explosion cross-sectional area is characterized by a diameter of 8-12 cm and the downstream portion is characterized by a diameter of 20-40 cm. Thus, an exemplary cross-sectional area ratio of the downstream portion to the pre-detonation segment is 1: 1 to 10: 1, more narrowly 2: 1 to 10: 1. The total length L between the end portions 28 and 30 can be 1 to 15 m, and more narrowly 5 to 15 m. In the exemplary embodiment, transition line segment 86 extends between pre-detonation segment 84 and most upstream segment 60. Segment 86 has upstream and downstream flanges that are sized to mate with the corresponding flanges of segments 84, 60 and has an interior surface that provides a smooth transition between the internal cross-sections of these segments 84, 60. Exemplary segment 86 has a length L _4. An exemplary spread half angle of the inner surface of the segment 86 is ≦ 12 °, more narrowly 5-10 °.

  The fuel / oxidant charge can be introduced into the detonation line in various ways. There may be one or more different fuel / oxidant mixtures. Such a mixture can be premixed outside the detonation line or mixed during or after introduction into the line. FIG. 3 shows segments 84 and 86 configured to separately charge two different fuel / oxidizer formulations, a pre-detonation formulation and a main formulation. In the exemplary embodiment, in the upstream portion of the segment 84, a pair of pre-explosive fuel injection lines 90 are connected to a port 92 provided in the segment wall that defines the fuel injection port. Similarly, a pair of pre-explosive oxidant lines 94 are connected to the oxidant inlet port 96. In the exemplary embodiment, these ports are provided in the upstream half of the length of segment 84. In the exemplary embodiment, each fuel injection port 92 is paired with an associated oxidant port 96, at the same axial position as the associated oxidant port, and opposed injection mixes of fuel and oxidant. (Provided by way of example as 90 °, but other angles including 180 ° are possible). As will be described in more detail below, a purge gas line 98 is connected to the purge gas port 100 located further upstream. An end plate 102 bolted to the upstream flange of the segment 84 seals the upstream end of the combustion line and has an operative end 108 inside the segment 84 (such as a spark plug). Passes through the end plate 102.

  In the exemplary embodiment, main fuel and main oxidant are input to segment 86. In the illustrated embodiment, main fuel is carried by several main fuel lines 112 and main oxidant is carried by several main oxidant lines 110. Each main oxidant line 110 has a termination that concentrically surrounds the associated fuel line 112 so that main fuel and main oxidant are mixed at the associated inlet 114. In the exemplary embodiment, the fuel is a variety of hydrocarbons. In a particular exemplary embodiment, both fuels are the same and are drawn from the same fuel source, but with different oxidizers or substantially pure oxygen for a pre-detonation mixture and air for the main mixture, respectively. Mixed. An exemplary fuel useful in this case is propane, MAPP gas, or a mixture thereof. Other fuels including ethylene and liquid fuels (such as diesel oil, kerosene, and jet flight fuel) can also be used. The oxidant may comprise a mixture, such as an air / oxygen mixture in a ratio suitable to obtain the desired main detonation and / or pre-detonation charge chemistry. In addition, a monopropellant fuel having a molecularly combined fuel and an oxidant component may be an option.

  In operation, the combustion line is emptied with the exception of air (or other purge gas) at the beginning of the use cycle. Next, pre-detonation fuel and pre-depletion oxidant are injected via the associated ports, filling segment 84 and partially extending into segment 86 (eg, near midpoint), advantageously Spreads just beyond the fuel / oxidant port. Subsequently, the flow of pre-explosive fuel and pre-explosive oxidant is stopped. An exemplary volume that is filled by the pre-detonation fuel and pre-detonation oxidant is 1-40% of the volume of the combustion line, more narrowly 1-20%. Next, the main fuel and the main oxidant are charged so as to substantially fill a part (for example, 20 to 100%) of the remaining volume of the combustion line. Subsequently, the flow of main fuel and main oxidant is stopped. Pre-loading the pre-explosive fuel and pre-explosive oxidant across the main fuel / oxidant port may result in the formation of air or other non-combustible slag between the pre-explosive charge and the main charge Almost disappears. Such slag can interfere with the movement of the combustion surface between the two charges.

  With the charge applied, the ignition box is activated to provide a spark discharge for the igniter and a pre-detonation charge is ignited. The pre-detonation charge is selected such that the combustion has a very fast chemistry, and the initial deflagration rapidly changes to detonation within segment 84 to generate detonation waves. When such detonation waves occur, they effectively pass through the main charge, which may have a sufficiently slow chemistry in the pipeline to not detonate itself. The detonation wave travels longitudinally downstream and emerges from the downstream end 30 as a shock wave inside the furnace, typically impinging on the surface to be cleaned so as to at least loosen contamination (contaminants), Give mechanical shock. Following the detonation wave, pressurized combustion products are released from the detonation line, and the released products emerge from the downstream end 30 as a jet (such as by removal of loose material) cleaning process. Finish further. After or simultaneously with the release of such combustion products, a purge gas (eg, air from the same source supplying the main oxidant and / or nitrogen) is introduced through the purge port 100 and finally The pre-detonation line is filled with purge gas in preparation for repeating the cycle (with immediate or next regular or irregular intervals, according to manual or automatic decisions by the control and monitoring device) as well as expelling fresh combustion products. Also, the basic flow of purge gas can be maintained between fill / discharge cycles to prevent gas and particles from entering upstream from inside the furnace and to assist in cooling the detonation line. .

  In various embodiments, the internal surface reinforcement may substantially increase the internal surface area beyond the internal surface area of the substantially cylindrical and frustoconical segments. Such an enhancement may be effective in sustaining a change from deflagration to detonation or detonation waves. FIG. 4 shows an inner surface reinforcing portion provided inside one main segment 60. An exemplary reinforcement is substantially a chin spiral, but other reinforcements such as a Schelkin spiral or a Smirnov cavity can also be used. This spiral is constituted by a spiral member 120. The exemplary member 120 is formed as a metallic element having a circular cross section with a diameter of about 8-20 mm. Other cross sections may be used. The exemplary member 120 is held apart from the interior surface of the segment by a plurality of longitudinal elements 122. This exemplary longitudinal element 122 is a rod of cross-section and material similar to member 120 and is welded to the inner surface of member 120 and associated segment 60. Such enhancements can be utilized to provide pre-detonation instead of or in addition to the techniques described above for different charges and different combustor cross-sectional areas.

  The apparatus of the present invention can be used in a wide range of applications. For example, in a typical coal-fired furnace, the apparatus of the present invention comprises a pendant or secondary superheater, a convection flow path (temporary superheater and economizer bundle), an air preheater, a selective catalyst remover (SCR) scrubber, a bug It can be applied to houses or electrostatic precipitators, economizer hoppers, ash or other thermal deposits on heat transfer surfaces or other surfaces. The applicability of the present invention also exists in other applications such as oil burning furnaces, black liquor recovery boilers, biomass boilers, waste recycling burners (garbage burners).

  Various devices can be provided for monitoring and / or controlling the operation of the detonation cleaning device. The implementation of a particular control and monitoring device can be affected by the physical environment, including the nature, shape, surface, combustion line configuration, etc. of the vessel. FIG. 6 schematically shows one of several levels of the container 200. At this level, a plurality of combustion pipelines 202A to 202D are arranged. In an exemplary embodiment, the downstream outlet of the conduit is located within the container and the upstream end is located outside the container. Although the pipe line is illustrated in a straight line shape, the pipe line may have a non-linear shape so as to emit a shock wave in a desired direction at a desired position. Each line is closely associated with an interface module 204A-204D that can provide local control of various operating parameters (such as fuel and oxidant input, purge and cooling gas input, ignition, etc.). Yes. Exemplary interface modules are described in further detail below. A given container level may include sensors 206, 208. However, these sensors need not be dedicated to this level. Similarly, the pipe line may be other than the one dedicated to the level, and can be directed to the direction other than the discharge direction in the parallel plane. The sensor can be placed relative to the line (eg, in the vicinity of a particular associated line outlet or the surface of the furnace cleaned by this line) or more generally. The sensor can detect one or more of a thermal condition, pressure, flow, chemical condition, and / or visual condition. Exemplary sensor operation is described in detail below.

Modules and sensors are connected to a hub 210 ( such as Ethernet ) via a communication line 209 for communicating signals. In an exemplary embodiment, the sensor is connected to the hub via the module (eg, connected to the module via a communication or signal line). For physical input (such as fuel, oxidant, purge gas, refrigerant, power), the module is connected to the central supply unit 212 by fluid lines and power lines 213. The hub and supply unit can be level-only, common, or some combination. Hubs are dedicated to containers or control of equipment (such as control / monitoring software running on a general purpose computer) that can be central to a group of containers in the field (such as certain equipment) and The monitoring device 214 is connected to communicate signals (for example, via a network line 215 such as an optical fiber line or an Ethernet line). The supply unit can likewise be connected to the device 214 via the hub 210 or can be provided independently. Device 214 is in communication with a remote control and monitoring device 216. This device 216 can reliably communicate with multiple devices 214 at multiple different sites. However, in such a case, device 216 may be located at the same location as one or more devices 214 and may be located away from other devices. Exemplary communication between device 216 and device 214 occurs over a wide area network 217 such as the Internet. Other public or private networks and other communication systems can also be used. The supply unit 212 receives a supply of gases and other fluids other than air from a remote tank farm 218 (eg, a facility's central tank farm) via line 219, as well as appropriate factory air and power (as shown). (Omitted). Device 214 can communicate with various central devices. For example, the device 216 may be a central owner / operator device that communicates with the various facility devices 214 of the facility owner / operator. Central device 223 may be a service provider's central device that communicates with devices 214 at various facilities of various owners / operators either directly or via device 216. The device 214 may require service or regular maintenance (where decisions are made at any of the devices 214, 216, 223) based on the data provided by the sensors 206, 208, or appropriate. To the device 223.

  In the exemplary embodiment, an emergency control panel 220 is provided in the vicinity of the device 214. An exemplary emergency control panel includes one or more status lights (eg, red / green status lights and emergency stop switches for each line and a master stop switch for all lines) and One or more switches. They are connected by lines 222 that extend to the individual interface modules. In the event of a controller failure that may impede control of the pipeline (ie, safety) by the device 214 and the hub 210, an engineer may attempt to secure the pipeline (eg, closing or igniting fuel and oxidizer valves). The stop switch can be actuated (such as to safely stop and / or disable the associated line), such as by disabling. The interface module itself can be installed in fail-safe mode so that the module transitions to safe mode by breaking the associated lines 215,222.

  FIGS. 7 and 8 illustrate an exemplary interface module 204 associated with the combustion line 202. In the exemplary embodiment, the interface module includes a storage device 230 for control electronics from which a status light 232 extends. In the vicinity of the storage device 230, the fuel and oxidant valve storage devices 234 and 236 and the air accumulator 238 are provided. In the exemplary embodiment, fuel and oxidant conduits 240, 242 extend into valve enclosures 234, 236 and are connected to electronic control valves (not shown) that are connected to suitable fluids. It is connected to the pipe line 202 by a pipe line. Similarly, the factory air line 244 can be coupled to an oxidant valve enclosure 236. The control enclosure is connected to both the control panel 220 and the hub 210 by appropriate lines 209. The local stop switch 246 can be connected to the control electronics via line 248 and can be fixed directly to or near the electronics storage 230.

  FIG. 9 shows an exemplary control device of the electronic device storage device 230 of the interface module 204. These electronic devices function as local control / monitoring devices dedicated to the relevant pipeline. The core of the electronic device is interface control software executed on the CPU emulator board 250. Emulator 250 communicates with relay bank 252 via line 254 to control various valves within storage devices 234 and 236 associated with the corresponding relay via control line 256. In order to ensure safety, it is advantageous to close the valve in the event of a failure. In order to reliably generate detonation waves, the emulator 250 includes an ionization probe (for example, a sensor 206 that is spaced apart in the longitudinal direction at the downstream end of the conduit and is collectively referred to as a sensor). The timer input is received via line 258 connected to two probes that are a subset of). The emulator communicates via line 260 with an Ethernet-based controller 262 that functions by connecting to the hub 212 via line 209. Controller 262 receives input from the thermocouple and resistance temperature detector (RTD) via line 270, receives input from the pressure sensor via analog line 272, and via a separate input line 274. Configured to receive input from the limit switch. In an exemplary embodiment, the thermocouple can be provided somewhere in the valve enclosure or vessel at various locations along the conduit. A pressure sensor (e.g., a transducer) can measure pressure at one or more positions of the valve enclosure or other position. The thermocouple / RTD can be a subset of sensors 206, 208, collectively referred to as sensors. The additional pressure sensor may be in the form of a probe or the like disclosed in US Patent No. 10/733535. The limit switch can confirm the positioning of the mechanical hardware (eg, to ensure that the storage device is securely closed before ignition).

  Power for the emulator and solenoid bank is supplied by DC power supplies 280 and 282 that receive power from the AC power supply 284. In the exemplary embodiment, an emergency power supply (UPS) / battery backup 286 provides AC power to the power supplies 280, 282 and the Ethernet controller in the event of a power failure at the source 284.

In operation, the control and monitoring device 214 may determine the initiation of detonation cleaning by one or more lines and the characteristics of such cleaning by various means. The sensors described above can include a combination of image or non-image radiation sensors (such as infrared sensors). An exemplary image sensor (camera) is disclosed in US Pat. No. 10 / 733,606. Alternatively or in addition, the interior of the container can be monitored as described above through the window by a sensor external to the container. The sensor can also detect the release of chemicals (such as contaminants). For example, CH ^- or OH ^- ions, such as, having (in the infrared band, such as 324nm and 282 nm) detectable characteristic frequency. Emissivity or other measurements can directly detect adhesion on the surface. Also, a temperature measurement of the fluid flowing through the tube bundle can indicate adhesion of insulating material on the tube. The sensor facilitates continuous monitoring.

  During operation, various sensors can be used to determine the nature of the deposit (such as deposit composition, deposit thickness, and deposit range). These properties can be attributed to the appropriate wash sequence / protocol characterized by the particular line to be released and the nature of the release (such as the nature and amount of charge of the particular fuel / oxidant being injected into the particular line). Can be used to determine. The timing of the relative ignition of the different lines can be selected to achieve the desired operation (which can include delays to avoid interference and synchronization to achieve the overall effect). After an ignition sequence (which may include one or more ignitions of one or more lines), a re-evaluation may be performed to determine whether additional ignition is appropriate based on sensor input. . The results of such re-evaluations and subsequent re-evaluations can be used to fine-tune specific wash protocols for future use. Data from the sensor can also be used to determine the status of the cleaning device and its components. Absence of input from the ion sensor may indicate no detonation. The pressure sensor may indicate insufficient or excessive fuel or oxidant pressure. The temperature sensor can indicate overheating of the pipeline. Such abnormal status data can cause warning indications and cause automated service / maintenance requests. In the exemplary embodiment, controller 214 is generally programmable to command the release of various single shots and send commands corresponding to the individual line control electronics. These control electronics may store information (eg, fuel / oxidant amount, etc.) necessary to actually fill and discharge in a manner appropriate for a particular shot. For example, the controller 214 can send an overall command indicating a sudden high power pulse to the local control electronics, which causes the filling parameter for the sudden high power shot to be Shots can be generated even if they are different. The controller 214 is further programmable to generate shot combinations for a particular protocol.

  While one or more embodiments of the invention have been described, various changes can be made without departing from the spirit and scope of the invention. For example, the present invention can be provided for use with various industrial equipment and various sootblower technologies. The form of a particular embodiment can be influenced by the form of existing equipment and technology. Accordingly, other embodiments are within the scope of the claims.

FIG. 3 is a perspective view of an industrial furnace provided in association with a plurality of soot blowers arranged for furnace cleaning. FIG. 2 is a side view of one soot blower of FIG. 1. It is a partial notch side view of the upstream edge part of the soot blower of FIG. FIG. 3 is a longitudinal sectional view of a main combustion segment of the soot blower of FIG. 2. FIG. 5 is an end view of the segment of FIG. 4. It is a schematic explanatory drawing of the control apparatus for several washing | cleaning apparatuses. FIG. 7 is a plan view of an exemplary interface module of the apparatus of FIG. It is a side view of the interface module of FIG. It is a schematic explanatory drawing of the electronic device for control of the interface module of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 200 ... Container 202A-202D ... Combustion line 204A-204D ... Interface module 206, 208 ... Sensor 209 ... Communication line 210 ... Hub 212 ... Central supply unit 213 ... Power line 214 ... Control and monitoring device 215 ... Network line 216 ... Remote Control and monitoring device 217 ... Wide area network 218 ... Tank farm 219 ... Pipe line 222 ... Line 223 ... Central device

Claims (22)

A cleaning device for one or more interior surfaces of a container having a container wall and a wall opening separating the exterior and interior of the container,
At least one elongate conduit having an upstream first end and a downstream second end and arranged to direct a shock wave from the second end into the container;
A fuel and oxidant source coupled to the line to supply fuel and oxidant to the line;
An igniter arranged to initiate a reaction of the fuel and oxidant to generate the shock wave;
At least one sensor for detecting one or more thermodynamic properties associated with the container, the sensor comprising means for detecting ions associated with detonation ;
A controller that is connected to the igniter, the supply source, and the sensor, receives an input from the sensor, and controls operations of the igniter and the supply source in response to the input; An internal surface cleaning apparatus comprising:   The internal surface cleaning apparatus according to claim 1, further comprising a plurality of the sensors including at least one temperature sensor and at least one pressure sensor.   The internal surface cleaning apparatus according to claim 1, further comprising a plurality of the sensors including at least one thermocouple provided in the pipe line or the container and at least one infrared sensor.   4. The internal surface cleaning apparatus according to claim 3, wherein the at least one infrared sensor includes an infrared camera.   The internal surface cleaning apparatus according to claim 1, further comprising a plurality of the sensors including at least one combustion exhaust sensor. A plurality of said conduits and said igniters are included, each conduit being associated with one or more associated igniters;
The controller is
A plurality of local controllers each associated with and connected to one of the associated igniters;
The internal surface cleaning device according to claim 1, further comprising: a central control device connected to the plurality of local control devices.   7. The internal surface cleaning apparatus of claim 6, wherein the central controller is programmed to generate a maintenance or service request in response to the input.   2. The internal surface cleaning apparatus according to claim 1, wherein the control device is in communication with a remote monitoring device.   2. The internal surface cleaning apparatus according to claim 1, wherein the control device is programmed to control the operation of the pipe line in response to an input from the sensor.   The control device is programmed with a plurality of different cleaning processes, and the control device is programmed to execute the process in response to corresponding detection conditions. Internal surface cleaning device.   The internal surface cleaning apparatus of claim 1, further comprising an image inspection camera connected to the controller for visually monitoring the interior of the container. A monitoring device for monitoring the operation of a plurality of remote detonation cleaning devices,
A communication interface for communicating with the cleaning device;
A processor connected to the communication interface;
And a memory connected to the processor,
At least one of the processor and the memory receives data from the cleaning device and stores instructions for recording information about the cleaning device ;
The monitoring device further includes a sensor for detecting ions related to detonation provided in each detonation cleaning device. The monitoring device is a monitoring and control device;
The monitoring device according to claim 12, wherein at least one of the processor and the memory stores an instruction to operate the cleaning device.   The monitoring device of claim 12, further comprising one or more display devices.   15. The monitoring device of claim 14, wherein at least one of the one or more display devices is connected to allow display of video camera input for at least a portion of time. It is used in combination with a plurality of the cleaning devices, and these multiple cleaning devices are
Multiple combustion lines;
A plurality of local control modules each associated with one of the predetermined combustion lines;
A fuel and oxidant source coupled to the combustion line;
13. A plurality of devices each connected to the plurality of local control modules and each including a common control device configured to provide data to the monitoring device. Monitoring device. A method of cleaning the inner surface of a plurality of containers at a plurality of positions
Monitor data for each container in a central location,
In response to the monitored data relating to one of the specific containers, causing the release of a detonation cleaning device associated with the specific container to clean the interior surface of the specific container;
The internal surface cleaning method further includes a step of detecting ions related to detonation by a sensor .   Programmed to select at least one of a plurality of predetermined washing protocols in response to the monitored data and cause the release in response to the selected at least one protocol The method for cleaning an inner surface of a container according to claim 17, wherein the method is performed by a control and monitoring device.   The method for cleaning an inner surface of a container according to claim 17, wherein the method is performed repeatedly and continuously.   18. The method of cleaning an inner surface of a container according to claim 17, further comprising monitoring an associated surface using an infrared camera provided in each container during operation of the container. The monitoring is
Monitoring the emissivity of the inner surface of each container;
Monitoring the amount of one or more chemical species in each container;
The method for cleaning an inner surface of a container according to claim 17, comprising at least one of monitoring one or more images inside each container.   18. The method of claim 17, further comprising receiving an automated maintenance or service request for at least one of the containers.

Images