Pipe cleaning components and methods for cleaning pipe systems using these components

Abstract

The pipeline cleaning assembly has a connection and fixing device having a body defining a cavity. A first port, a first auxiliary port coaxially aligned with the first port, a second port, and a second auxiliary port coaxially aligned with the second port are in fluid communication with the cavity. A first connecting flange extends from and surrounds the first port, a second connecting flange extends from and surrounds the second port, a third connecting flange extends from and surrounds the first auxiliary port, and a fourth connecting flange extends from and surrounds the second auxiliary port. A first valve is connected to the third connecting flange to control fluid flow through the first auxiliary port.

Description

Technical Field

[0001] This disclosure generally relates to the cleaning of piping systems, and more specifically, to piping cleaning components for cleaning piping systems. Background Technology

[0002] Before a new plant can be put into operation, the plant's piping systems need to be cleaned, and manufacturers of large rotating equipment (such as turbines and compressors) often specify the required level of cleanliness because incomplete cleaning of the piping systems can lead to costly damage and / or premature wear of turbines, compressors, pumps, or other large equipment. The cleaning process is typically designed by an EPC contractor or a company specializing in cleaning services, and usually involves installing temporary pipes, valves, and hoses to clean the piping system. The piping system is then pressurized, and once the specified pressure is reached, it is vented. This process is repeated until the piping system reaches the desired level of cleanliness.

[0003] Typically, cleaning contractors will need to weld pipe fittings to the piping system for temporary piping. These fittings will be removed after the cleaning process, and the piping system will be repaired. However, this process is both time-consuming and expensive, and any work done on the system after the cleaning process can potentially re-contaminate the piping system.

[0004] Furthermore, large slide lever control valves typically require noise-reducing valve internals to meet specified noise limits. This is achieved by using a valve cage element with numerous small channels to divide the flow into many small jets. If any particles are present in the flow, these small channels can easily become clogged. Additionally, when the valve plug in these control valves moves downwards to close the valve, debris trapped in the valve cage channels can wed between the valve plug and the valve cage, potentially damaging the valve internals.

[0005] Currently, one way to avoid damaging control valves during the cleaning process is to replace the internals in a typical control valve that allow debris to pass through. However, this does not remove debris from a closed system, such as a refrigerant circuit. Another approach is to replace the valve internals that discharge debris from the top of the valve with a blowout preventer. These are typically used in steam systems equipped with relatively large boilers that can generate high flow rates to clean the piping. However, both solutions require disassembling and reconfiguring the control valve with the blowout preventer, and reconfiguring the standard valve internals after cleaning, which most users do not do, and both require piping systems with high flow rates. Summary of the Invention

[0006] According to an exemplary aspect of the present invention, a pipe cleaning assembly includes: a connection and fixing device comprising a body defining a cavity, a first hole, a first auxiliary hole coaxially aligned with the first hole, a second hole, and a second auxiliary hole coaxially aligned with the second hole, the first hole, the first auxiliary hole, the second hole, and the second auxiliary hole being in fluid communication with the cavity. A first connecting flange extends from and surrounds the first hole, a second connecting flange extends from and surrounds the second hole, a third connecting flange extends from and surrounds the first auxiliary hole, and a fourth connecting flange extends from and surrounds the second auxiliary hole. A first valve is connected to the third connecting flange of the connection and fixing device to control fluid flow through the first auxiliary hole.

[0007] Furthermore, according to any one or more of the foregoing exemplary aspects of the present invention, the pipe cleaning component may also include any one or more of the following preferred forms in any combination.

[0008] In a preferred embodiment, the axis of the first hole is perpendicular to the axis of the second hole.

[0009] In another preferred embodiment, the plate is positioned above the second auxiliary hole and fixed to the body to prevent fluid flow through the second auxiliary hole.

[0010] In another preferred embodiment, the second valve is connected to the fourth connecting flange of the connecting fixture to control the fluid flow through the second auxiliary hole.

[0011] According to another exemplary aspect of the invention, a pipe cleaning assembly includes a connection and fixing device comprising a body defining a cavity, a first bore, an opposing first auxiliary bore coaxially aligned with the first bore, a second bore, and an opposing second auxiliary bore coaxially aligned with the second bore, the first bore, the first auxiliary bore, the second bore, and the second auxiliary bore being in fluid communication with the cavity. A first connecting flange extends from and surrounds the first bore, a second connecting flange extends from and surrounds the second bore, a third connecting flange extends from and surrounds the first auxiliary bore, and a fourth connecting flange extends from and surrounds the second auxiliary bore. A commutator internal is inserted through the second auxiliary bore and positioned within the cavity of the body, and includes a wall extending across the commutator internal and guiding fluid flow through the connection and fixing device.

[0012] Furthermore, according to any one or more of the foregoing exemplary aspects of the present invention, the pipe cleaning component may also include any one or more of the following preferred forms in any combination.

[0013] In a preferred embodiment, the commutator internals guide fluid between the first and second holes and prevent fluid flow to the first and second auxiliary holes.

[0014] In another preferred embodiment, the filter is positioned between the commutator internals and the second orifice.

[0015] In another preferred embodiment, the commutator internals guide fluid between the first orifice and the second auxiliary orifice, and between the second orifice and the first auxiliary orifice.

[0016] In another preferred embodiment, the first valve is connected to the third connecting flange of the connecting and fixing device and / or the second valve is connected to the fourth connecting flange of the connecting and fixing device to control the fluid flow through the first auxiliary hole and / or the second auxiliary hole.

[0017] In another preferred embodiment, the first reversing pipe is connected to the fourth connecting flange of the connecting fixing device and is in fluid communication with the second auxiliary port, the second reversing pipe is connected to the third connecting flange of the connecting fixing device and is in fluid communication with the first auxiliary port, the valve is positioned between the first reversing pipe and the second reversing pipe, and the reversing internals redirect fluid from the first port to the second auxiliary port and from the first auxiliary port to the second port.

[0018] In another preferred embodiment, the filter is positioned between the commutator internals and the second orifice.

[0019] According to another exemplary aspect of the present invention, a method for cleaning a piping system includes the following steps: installing a connection and fixing device between a first segment and a second segment of the piping system, the connection and fixing device including a body defining a cavity, a first hole in fluid communication with the cavity, a first connecting flange extending from and surrounding the first hole and configured to be fixed to a flange of the first segment, an opposing first auxiliary hole in fluid communication with the cavity and coaxially aligned with the first hole, a second hole in fluid communication with the cavity, a second connecting flange extending from and surrounding the second hole and configured to be fixed to a flange of the second segment, and an opposing second auxiliary hole in fluid communication with the cavity and coaxially aligned with the second hole; allowing pressurized fluid to flow through the piping system; removing the connection and fixing device; and installing a control valve between the first segment and the second segment.

[0020] Furthermore, according to any one or more of the foregoing exemplary aspects of the present invention, the method for cleaning a piping system may also include any one or more of the following preferred forms in any combination.

[0021] In a preferred embodiment, the method includes the step of removing the control valve from the first and second pipe sections before installing the connection fixing device.

[0022] In another preferred embodiment, the method includes the step of installing a first valve at one of the first auxiliary orifice or the second auxiliary orifice, wherein the step of allowing pressurized fluid to flow through the piping system includes closing the valve, pressurizing the piping system, and opening the valve to discharge debris from the piping system.

[0023] In another preferred embodiment, the method includes the steps of: installing a commutator internal into a cavity of the body of a connecting fixture through a second auxiliary hole, the commutator internal having a wall extending across the commutator internal; and positioning the commutator internal such that the wall guides fluid between a first hole and a second hole and prevents fluid flow to the first auxiliary hole and the second auxiliary hole.

[0024] In another preferred embodiment, the method includes the step of installing a filter between the commutator internals and the second orifice.

[0025] In another preferred embodiment, the method includes the steps of: installing a commutator inner element through a second auxiliary hole into a cavity of a body of a connecting fixture, the commutator inner element having a wall extending across the commutator inner element; and positioning the commutator inner element such that the wall guides fluid between the first hole and the second auxiliary hole and between the second hole and the first auxiliary hole.

[0026] In another preferred embodiment, the method includes the step of connecting a first valve to a third connecting flange of the connecting fixture and / or connecting a second valve to a fourth connecting flange of the connecting fixture to control fluid flow through a first auxiliary orifice and / or a second auxiliary orifice, wherein the step of allowing pressurized fluid to flow through the piping system includes closing the first valve and / or the second valve, pressurizing the piping system, and opening the first valve and / or the second valve to discharge debris from the piping system.

[0027] In another preferred embodiment, the method includes the following steps: connecting a first reversing pipe to a fourth connecting flange of the connecting fixing device at a second auxiliary hole; connecting a second reversing pipe to a third connecting flange of the connecting fixing device at a first auxiliary hole; and positioning a valve between the first reversing pipe and the second reversing pipe; wherein the step of allowing pressurized fluid to flow through the piping system includes closing the valve, pressurizing the piping system, and opening the valve.

[0028] In another preferred embodiment, the method includes the step of installing a filter between the commutator internals and the second orifice. Attached Figure Description

[0029] Figure 1 This is a side cross-sectional view of an exemplary connection and fixing device;

[0030] Figure 2 yes Figure 1 The configuration is for the connection and fixing device used in static pressure testing;

[0031] Figure 3 It includes Figure 1 A side cross-sectional view of a first exemplary pipe cleaning assembly with a connection and fixing device;

[0032] Figure 4 It includes Figure 1A side cross-sectional view of a second exemplary pipe cleaning assembly with a connection and fixing device;

[0033] Figure 5A Is it possible to... Figure 1 A perspective view of an exemplary commutator internal used in conjunction with a connecting and fixing device;

[0034] Figure 5B yes Figure 5A Another perspective view of the commutator internals;

[0035] Figure 6 It includes Figure 1 Connection and fixing device and Figure 5A -A side cross-sectional view of a third exemplary pipe cleaning assembly of the commutator internals of -B.

[0036] Figure 7 It includes Figure 1 Connection and fixing device and Figure 5A -A side cross-sectional view of the fourth exemplary pipe cleaning assembly of the commutator internals of -B.

[0037] Figure 8 It includes Figure 1 Connection and fixing device and Figure 5A -A side cross-sectional view of the fifth exemplary pipe cleaning assembly of the commutator internals of -B;

[0038] Figure 9 It includes Figure 1 Connection and fixing device and Figure 5A A side cross-sectional view of the sixth exemplary pipe cleaning assembly of the commutator internals of -B.

[0039] Figure 10 Is it possible to... Figure 1 A perspective view of an exemplary valve cover used in conjunction with a connecting and fixing device;

[0040] Figure 11 It includes Figure 1 Connection and fixing device and Figure 10 A side cross-sectional view of the seventh exemplary pipe cleaning assembly of the valve cover;

[0041] Figure 12 It includes Figure 1 Connection and fixing device and Figure 10 A side cross-sectional view of the eighth exemplary pipe cleaning assembly of the valve cover;

[0042] Figure 13 It includes Figure 1 Connection and fixing device and Figure 10 A side cross-sectional view of the ninth exemplary pipe cleaning assembly of the valve cover;

[0043] Figure 14 Is it possible to... Figure 1 A perspective view of another exemplary valve cover used in conjunction with a connecting and fixing device;

[0044] Figure 15 It includes Figure 1 Connection and fixing device and Figure 14 A side cross-sectional view of the tenth exemplary pipe cleaning assembly of the valve cover;

[0045] Figure 16 It includes Figure 1 Connection and fixing device and Figure 14 A side cross-sectional view of the eleventh exemplary pipe cleaning assembly of the valve cover;

[0046] Figure 17 It includes Figure 1 Connection and fixing device and Figure 14 A side cross-sectional view of the twelfth exemplary pipe cleaning assembly of the valve cover; and

[0047] Figure 18 It includes Figure 1 Connection and fixing device and Figure 14 A side cross-sectional view of the thirteenth exemplary pipe cleaning assembly of the valve cover. Detailed Implementation

[0048] Protecting control valves and other sensitive equipment during static pressure testing and cleaning of piping systems is crucial for successful plant operation. The exemplary piping cleaning assemblies shown and described herein can be configured to allow multiple cleaning modes and, in some examples, have flow control functionality, enabling more thorough and economical cleaning of newly manufactured piping systems while preventing damage to control valve internals, rotating equipment, and other sensitive equipment used in the process industry. The piping cleaning assemblies have corresponding control valves (e.g., those they replace in the piping system) The design uses the same dimensions as large-angle control valves (such as FB and EA) or other equipment, and connects to the piping system using flanges instead of welding it in. This avoids contamination of the cleaned piping system when the piping cleaning assembly is removed and the control valve or other equipment is installed. Flow and noise reduction capabilities can also be adjusted to simulate the flow and noise reduction capabilities of control valves or other equipment, providing a realistic view of the piping system before installation. The modular design allows the piping cleaning assembly to be configured using the same basic connection fixtures, allowing for the selection of different cleaning modes without disassembly or reconstruction of the assembly, for example, simply by rotating the diverter trim or valve cover within the assembly. This saves time and reduces labor by providing quick-change cleaning mode selection.

[0049] refer to Figure 1An exemplary connection fixture 100 is shown fixed between a first pipe segment 15 and a second pipe segment 25 in a piping system. As described above, during static pressure testing and cleaning of the piping system, the connection fixture 100 can be used to replace angle valves or other sensitive components to avoid damage to the valves / sensitive components and eliminate the need for temporary pipe connections or access points for pipe cleaning purposes. The connection fixture 100 can be manufactured using 3D sand printing, which reduces costs and allows the connection fixture 100 to be custom-designed for each order, and has a body 105 defining a cavity 110 and a first hole 115 and a second hole 145 formed through the body 105 in fluid communication with the cavity 110. In the illustrated example, since the connection fixture 100 is configured to replace an angle valve, the first hole 115 has an axis 120 perpendicular to the axis 150 of the second hole 145. A first connecting flange 125 and a second connecting flange 155 extend from and surround the first bore 115 and the second bore 145, respectively, to allow the connecting fastener 100 to be removably secured to the first pipe section 15 and the second pipe section 25 in place of an angle valve or other components without any welding or cutting of the piping system, which would introduce additional contaminants into the piping system during installation and removal. The first connecting flange 125 and the second connecting flange 155 mate with the flange ends of control valves, allowing the connecting fastener 100 to be installed in the piping system in place of the control valves. This allows for precise fabrication of the piping system followed by hydrostatic testing, while also ensuring the safe storage of the control valves. The first connecting flange 125 is secured to the flange 20 of the first pipe section 15 using threaded members 35 (e.g., bolts and nuts), and the second connecting flange 155 is secured to the flange 30 of the second pipe section 25 using threaded members 35.

[0050] A first auxiliary hole 130 is also formed through the body 105, opposite to the first hole 115, in fluid communication with the cavity 110, and having an axis 135 coaxially aligned with the axis 120 of the first hole 115. Similarly, a second auxiliary hole 160 is formed through the body 105, opposite to the second hole 145, in fluid communication with the cavity 110, and having an axis 165 coaxially aligned with the axis 150 of the second hole 145. A third connecting flange 140 and a fourth connecting flange 170 extend from and surround the first auxiliary hole 130 and the second auxiliary hole 160, respectively, to allow additional conduits and components to be connected to the connecting fixture 100, as described in more detail below.

[0051] The inner diameter D1 of the first hole 115 matches the inner diameter D2 of the first pipe section 15 and the inner diameter D3 of the first auxiliary hole 130. The inner diameter D4 of the second hole 145 matches the inner diameter D5 of the second pipe section 25 and the inner diameter D6 of the second auxiliary hole 160. If necessary, it allows the connection and fixing device 100 to issue or receive pipe scrapers (e.g., cleaning pigs).

[0052] The connection and fixing device 100 also supports a variety of optional components, as discussed in more detail below, which allow for economical cleaning of the piping system in a variety of different ways and allow piping system manufacturers to develop superior cleaning strategies tailored to specific piping systems.

[0053] The third connecting flange 140 and the fourth connecting flange 170 can be standard ANSI RF flanges, which can be fitted with blind flanges for static pressure testing of piping systems, such as... Figure 2 As shown. Figure 2 As shown, a first plate 175 (blind flange) can be positioned above the first auxiliary hole 130 and fixed to the third connecting flange 140 of the body 105, for example using a threaded member 35, to prevent fluid flow through the first auxiliary hole 130. A second plate 180 (blind flange) can similarly be positioned above the second auxiliary hole 160 and fixed to the fourth connecting flange 170 of the body 105, for example using a threaded member 35, to prevent fluid flow through the second auxiliary hole 160. Configured in this way, the connection and fixing device 100 allows for completely sealed unrestricted flow in either direction and can be used for static pressure testing of the piping system.

[0054] In this configuration, during the construction of the piping assembly, the connecting fastener 100 can be installed between the first pipe section 15 and the second pipe section 25 of the piping system in place of a control valve or other sensitive components. Alternatively, if a control valve is installed during construction, it can be removed from the first pipe section 15 and the second pipe section 25, and the connecting fastener 100 can be installed between the first pipe section 15 and the second pipe section 25 in place of the control valve. Once the connecting fastener 100 has been installed and the first plate 175 and the second plate 180 are secured above the first auxiliary hole 130 and the second auxiliary hole 160, pressurized fluid can flow through the piping system to perform static pressure testing and / or cleaning. Once the testing and / or cleaning is complete, the connecting fastener 100 can be removed, and the control valve can be installed between the first pipe section 15 and the second pipe section 25. This process allows the piping system to be cleaned without the risk of wear or damage to the control valve during the cleaning process.

[0055] Cleaning of piping systems can be accomplished in a variety of ways, as described in Appendix A of ASME B31.3, such as water flushing, steam purging, or air purging. Depending on the cleaning method used, the connection fixture 100 can be configured to remove debris from the piping system by removing the first plate 175 and / or the second plate 180 from the body 105 when the piping system is pressurized, allowing fluid and debris to be purged through one or both of the first auxiliary orifice 130 and / or the second auxiliary orifice 160. This is particularly advantageous for closed piping systems without existing venting locations. Because the connection fixture 100 has a larger capacity than the control valve it replaces, higher pipe velocities can be achieved, thus improving the cleanliness of the piping system. When used in this manner, the connection fixture 100 allows any debris within the piping system to flow through it. If necessary, the flow coefficient (Cv) of the connection fixture 100 can be adjusted to meet the needs of the cleaning procedure designer. However, this cleaning method requires a large steady flow, which is often unavailable. In these cases, the open auxiliary orifices may become clogged by valves, such as… Figure 3 and Figure 4 As shown and described below.

[0056] In some piping systems, the fluid pressure may not be high enough to remove only the first plate 175 and / or the second plate 180 and allow the fluid pressure to purge debris. (Reference) Figure 3 The image shows a first exemplary pipe cleaning assembly 10A, which uses a connecting fastener 100 and can be used to seal the connecting fastener 100 to allow fluid pressure to be established and then open a first auxiliary port 130 to purge pressurized fluid and debris. Figure 3 As can be seen, a first valve 185, such as a butterfly valve or a ball valve, may be positioned above the first auxiliary port 130 and connected to a third connecting flange 140 of the connecting fixture 100 to control fluid flow through the first auxiliary port 130. Furthermore, a second plate 180 may also be positioned above the second auxiliary port 160 and fixed to a fourth connecting flange 170 of the body 105, for example using a threaded member 35, to block fluid flow through the second auxiliary port 160. Configured in this way, the first valve 185 can be closed to allow pressure to build up in the piping system, and then quickly opened to allow fluid and debris to be purged out of the piping system through the first auxiliary port 130. Alternatively, depending on the direction of fluid flow, a second valve 190 may be positioned above the second auxiliary port 160 and fixed to the fourth connecting flange 170, and the first plate 175 may be positioned above the first auxiliary port 130 and fixed to the third connecting flange 140. In this configuration, the second valve 190 can be closed to allow pressure to build up in the piping system, and then quickly opened to allow fluid and debris to be purged out of the piping system through the second auxiliary port 160.

[0057] In these configurations, during the construction of the piping assembly, the connecting fastener 100 can be installed between the first pipe section 15 and the second pipe section 25 of the piping system in place of a control valve or other sensitive components. Alternatively, if a control valve is installed during construction, it can be removed from the first pipe section 15 and the second pipe section 25, and the connecting fastener 100 can be installed between the first pipe section 15 and the second pipe section 25 in place of the control valve. Depending on the fluid flow direction, a first valve 185 or a second valve 190 is then installed at a first auxiliary port 130 or a second auxiliary port 160, and a first plate 175 or a second plate 180 is installed on the other of the first auxiliary port 130 or the second auxiliary port 160. Once installed, the first valve 185 / second valve 190 is closed to pressurize the piping system, and once pressurization has reached the target pressure, the first valve 185 / second valve 190 is quickly opened to depressurize the piping system at high flow rates and to discharge debris from the piping system for cleaning. This technique allows for pressurization of the piping system using a relatively small compressor, while still achieving high flow rates. Once cleaning is complete, the connection fixture 100 can be removed and the control valve can be installed between the first pipe section 15 and the second pipe section 25. This process allows the piping system to be cleaned without the risk of wear or damage to the control valve during the cleaning process.

[0058] refer to Figure 4 The diagram illustrates a second exemplary pipe cleaning assembly 10B, which uses a connecting fastener 100 and can be used to clean a piping system by blowing fluid and debris out from a first auxiliary port 130 and / or a second auxiliary port 160, depending on the flow direction of the fluid, and provides additional flow. Figure 4 The configuration shown allows for simultaneous purging of both upstream and downstream pipes, or for purging either the upstream or downstream pipes individually. For example... Figure 4 As can be seen, a first valve 185, such as a butterfly valve or a ball valve, can be positioned above the first auxiliary port 130 and connected to a third connecting flange 140 of the connection fixture 100 to control fluid flow through the first auxiliary port 130. Furthermore, a second valve 190, such as a butterfly valve or a ball valve, can be positioned above the second auxiliary port 160 and connected to a fourth connecting flange 170 of the connection fixture 100 to control fluid flow through the second auxiliary port 160. Configured in this way, the first valve 185 and the second valve 190 can be closed to allow pressure to build up in the piping system, and then one or both valves can be quickly opened to allow fluid and debris to be purged out of the piping system through the first auxiliary port 130 and / or the second auxiliary port 160.

[0059] In this configuration, during the construction of the piping assembly, the connecting fastener 100 can be installed between the first pipe section 15 and the second pipe section 25 of the piping system in place of a control valve or other sensitive components. Alternatively, if a control valve is installed during construction, it can be removed from the first pipe section 15 and the second pipe section 25, and the connecting fastener 100 can be installed between the first pipe section 15 and the second pipe section 25 in place of the control valve. The first valve 185 is then installed at the first auxiliary port 130 and connected to the third connecting flange 140, and the second valve 190 is installed at the second auxiliary port 160 and connected to the fourth connecting flange 170. Once installed, the first valve 185 and the second valve 190 are closed to pressurize the piping system, and once pressurization reaches the target pressure, the first valve 185 / second valve 190 are quickly opened to depressurize the piping system at a high flow rate and discharge debris from the piping system for cleaning. This technique allows for pressurization of the piping system using a relatively small compressor while still achieving high flow rates. Once cleaning is complete, the connection fixture 100 can be removed and the control valve can be installed between the first pipe section 15 and the second pipe section 25. This process allows the piping system to be cleaned without the risk of wear or damage to the control valve during the cleaning process.

[0060] refer to Figure 5A and Figure 5B An exemplary commutator inner member 200, which can also be used with the connection and fixing device 100, is shown. The commutator inner member 200 has a generally cylindrical wall 205 having an open first end 210 and an open second end 215. A radially extending flange 220 extends from and surrounds the second end 215 and can be used to house the commutator inner member 200 in a second auxiliary hole 160 (see, for example...). Figure 6 The first opening 225 and the second opening 230 are formed through the wall 205, near the first end 210, and are coaxially aligned and positioned on opposite sides of the wall 205. The wall 235, in the illustrated example, is planar, positioned inside the wall 205, and extends across the commutator internal 200 at an acute angle relative to the axis 240 of the commutator internal 200. The wall 235 extends completely across the interior of the wall 205 of the commutator internal 200, thereby preventing fluid flow between the first opening 225 and the second opening 230, allowing fluid flow between the first opening 225 and the open first end 210, and allowing fluid flow between the second opening 230 and the open second end 215 to guide fluid flow through the connection fixture 100.

[0061] The commutator internals 200 can be manufactured as separate components and attached together, or they can be manufactured as a single, integrated, monolithic component using additive manufacturing techniques (such as direct metal laser sintering, full-melting powder bed fusion, etc.). Using additive manufacturing processes, the 3D design of the desired structure is divided into multiple layers, for example, layers approximately 20-50 micrometers thick. A powder bed representing the first layer of the design, such as a powder-based metal, is then placed, and a laser or electron beam sinters the first layer of the design together. A second powder bed representing the second layer of the design is then laid on top of the first sintered layer, and the second layer is sintered together. This process continues layer by layer to form the complete structure.

[0062] refer to Figure 6 A third exemplary pipe cleaning assembly 10C is shown, which uses a connecting and fixing device 100 and a commutator internal 200 and can be used to clean a piping system. The use of the commutator internal 200 effectively separates the upstream and downstream pipes, allowing for individual pressurization and cleaning of each segment of the pipe, which helps eliminate cross-contamination between the two pipe segments. In the pipe cleaning assembly 10C, the commutator internal 200 is inserted through a second auxiliary hole 160 through the connecting and fixing device 100, positioned within the cavity 110 of the body 105, and secured in place by a second plate 180 positioned above the second auxiliary hole 160. A first plate 175 is similarly secured above the first auxiliary hole 130. The commutator internal 200 is positioned in a first position such that the first opening 225 is substantially aligned with the first bore 115, and the open first end 210 is substantially aligned with the second bore 145, so that the wall 235 guides fluid flow through the connecting fixture 100, and due to the positioning of the wall 235, the commutator internal 200 guides fluid between the first bore 115 and the second bore 145 and prevents fluid flow to the first auxiliary bore 130 and the second auxiliary bore 160. In this configuration, the flow rate of the connecting fixture 100 can be very high compared to a control valve because there is no limitation from the noise-reducing internals. The high flow rate of the connecting fixture 100 allows for high pipe velocities, which supports pipe cleaning.

[0063] In some cases, it may be necessary to filter the fluid flow through the connection fixture 100 while maintaining a high flow rate, for example, to remove large debris from a new piping system during commissioning. This can be achieved by positioning a filter 50 between the commutator inner element 200 and the second orifice 145 to capture and trap debris in the fluid flowing through the connection fixture 100. As shown, the filter 50 is fixed to the first end 210 of the commutator inner element 200. Alternatively, the filter 50 may be mounted between the commutator inner element 200 and a lip or shoulder formed in the body 105; however, the formation of the lip or shoulder in the body 105 may affect the ability to issue or receive pipe scrapers, as described above. The filter 50 may be a perforated flow diffuser positioned between the commutator inner element 200 and the body 105, supporting a cylindrical screen with very fine channels to safely remove debris from the piping system. Perforated flow diffusers are economical and readily available, and are available in a variety of channel sizes. The length of the perforated flow diffuser can also be increased until the desired flow rate is achieved. Alternatively, filter 50 may have an external filter and an internal screen, which allows for quick and economical adjustment of filtration efficiency by simply adjusting the mesh size of the internal screen. Debris collected within filter 50 will not damage connection fixture 100, and the channel size can be much smaller than that within the control valve. Alternatively, debris within filter 50 can be flushed out of the system by rotating the reversing internal component 200 180 degrees and reversing the fluid flow to blow debris out of the first auxiliary orifice 130. The use of filter 50 makes the inspection and cleaning of connection fixture 100 faster and more economical than using the currently practiced temporary filters sandwiched between flanges. Using filter 50, the cleanliness of the piping system can be more accurately assessed by trapping debris within connection fixture 100.

[0064] In this configuration, during the construction of the piping assembly, the connection fastener 100 can be installed between the first pipe section 15 and the second pipe section 25 of the piping system in place of a control valve or other sensitive components. Alternatively, if a control valve is installed during construction, it can be removed from the first pipe section 15 and the second pipe section 25, and the connection fastener 100 can be installed between the first pipe section 15 and the second pipe section 25 in place of the control valve. The commutator internal 200 is mounted into the cavity 110 of the body 105 through the second auxiliary hole 160 and positioned such that the wall 235 guides fluid between the first hole 115 and the second hole 145 and prevents fluid from flowing into the first auxiliary hole 130 and the second auxiliary hole 160. If desired, a filter 50 can also be installed between the commutator internal 200 and the second hole 145 to capture and trap debris flowing through the connection fastener 100. The first plate 175 and the second plate 180 can also be positioned above the first auxiliary hole 130 and the second auxiliary hole 160 and connected to the third connecting flange 140 and the fourth connecting flange 170 to seal the first auxiliary hole 130 and the second auxiliary hole 160. Pressurized fluid then flows through the piping system to clean it. Once cleaning is complete, the connecting fixture 100 can be removed and a control valve can be installed between the first pipe section 15 and the second pipe section 25. This process allows the piping system to be cleaned without the risk of wear or damage to the control valve during the cleaning process.

[0065] Not like Figure 6 As shown, fluid flow is guided from the first orifice 115 to the second orifice 145. The commutator internal 200 can be positioned in a second position such that the first opening 225 is approximately aligned with the first auxiliary orifice 130, the open first end 210 is approximately aligned with the second orifice 145, the second opening 230 is approximately aligned with the first orifice 115, and the open second end 215 is approximately aligned with the second auxiliary orifice 160, so that the wall 235 guides fluid flow through the connecting fastener 100 and the commutator internal 200 guides fluid between the first orifice 115 and the second auxiliary orifice 160, and between the second orifice 145 and the first auxiliary orifice 130. By simply rotating the commutator internal 200 180 degrees, the connecting fastener 100 can be positioned such that... Figure 6 The "flow through" configuration shown is as follows Figures 7-9 The "outflow" configuration is shown.

[0066] refer to Figure 7The diagram illustrates a fourth exemplary pipe cleaning assembly 10D, which uses a connection fixing device 100 and a commutator internal 200 in a second position to clean a piping system. In the pipe cleaning assembly 10D, a second plate 180 is fixed above a second auxiliary port 160 to block fluid flow through a first port 115. A first valve 185 is positioned above the first auxiliary port 130 and connected to a third connection flange 140 of the connection fixing device 100 to control fluid flow from the second port 145 through the first auxiliary port 130. Configured in this way, the first valve 185 can be closed to allow pressure to build up on one side of the piping system, and then the first valve 185 can be quickly opened to allow fluid and debris from the second port 145 to be purged out of the piping system through the first auxiliary port 130.

[0067] In this configuration, during the construction of the piping assembly, the connecting fastener 100 can be installed between the first pipe section 15 and the second pipe section 25 of the piping system in place of a control valve or other sensitive components. Alternatively, if a control valve is installed during construction, it can be removed from the first pipe section 15 and the second pipe section 25, and the connecting fastener 100 can be installed between the first pipe section 15 and the second pipe section 25 in place of the control valve. The commutator internal 200 is mounted into the cavity 110 of the body 105 through the second auxiliary hole 160 and positioned such that the wall 235 guides fluid between the first hole 115 and the second auxiliary hole 160 and between the second hole 145 and the first auxiliary hole 130. A first valve 185 is mounted at the first auxiliary hole 130 and connected to a third connecting flange 140 to control fluid flow through the first auxiliary hole 130, and a second plate 180 is mounted at the second auxiliary hole 160 and connected to a fourth connecting flange 170 to block fluid flow through the second auxiliary hole 160. Once installed, the first valve 185 is closed to pressurize the piping system. Once pressurized, the first valve 185 is opened to drain fluid and debris from the piping system through the first auxiliary port 130 to clean the system. Once cleaning is complete, the connection fixture 100 can be removed, and a control valve can be installed between the first pipe section 15 and the second pipe section 25. This process allows for cleaning of the piping system without the risk of wear or damage to the control valve during the cleaning process.

[0068] Alternatively, to clean the other side of the piping system, a first plate 175 can be fixed above the first auxiliary port 130 to block fluid flow through the second port 145, and a second valve 190 is positioned above the second auxiliary port 160 and connected to the fourth connecting flange 170 of the connection fixture 100 to control fluid flow from the first port 115 through the second auxiliary port 160. Configured in this way, the second valve 190 can be closed to allow pressure to build up on the other side of the piping system, and then the second valve 190 can be quickly opened to allow fluid and debris from the first port 115 to be purged out of the piping system through the second auxiliary port 160. Simply replacing the first valve 185 at the first auxiliary port 130 with the second valve 190 at the second auxiliary port 160 and the second plate 180 at the second auxiliary port 160 with the first plate 175 at the first auxiliary port 130 allows the user to select the piping system to be cleaned.

[0069] In this configuration, during the construction of the piping assembly, the connecting fastener 100 can be installed between the first pipe section 15 and the second pipe section 25 of the piping system in place of a control valve or other sensitive components. Alternatively, if a control valve is installed during construction, it can be removed from the first pipe section 15 and the second pipe section 25, and the connecting fastener 100 can be installed between the first pipe section 15 and the second pipe section 25 in place of the control valve. The commutator internal 200 is mounted through the second auxiliary hole 160 into the cavity 110 of the body 105 and positioned such that the wall 235 guides fluid between the first hole 115 and the second auxiliary hole 160, and between the second hole 145 and the first auxiliary hole 130. A second valve 190 is mounted at the second auxiliary hole 160 and connected to a fourth connecting flange 170 to control fluid flow through the second auxiliary hole 160. A first plate 175 is mounted at the first auxiliary hole 130 and connected to a third connecting flange 140 to block fluid flow through the first auxiliary hole 130. Once installed, the second valve 190 is closed to pressurize the piping system. Once pressurized, the second valve 190 is opened to drain fluid and debris from the piping system through the second auxiliary port 160 to clean the system. Once cleaning is complete, the connection fixture 100 can be removed, and a control valve can be installed between the first pipe section 15 and the second pipe section 25. This process allows for cleaning of the piping system without the risk of wear or damage to the control valve during the cleaning process.

[0070] Alternatively, the first valve 185 and the second valve 190 can be installed at the first auxiliary port 130 and the second auxiliary port 160 to minimize the time and labor required for switching between the two pipe sections, such as Figure 8 As shown and described below.

[0071] refer to Figure 8A fifth exemplary pipe cleaning assembly 10E is shown, which uses a connection fastener 100 and a commutator internal 200 in a second position to clean both sides of a pipe system. In the pipe cleaning assembly 10E, a first valve 185 is positioned above a first auxiliary port 130 and connected to a third connection flange 140 of the connection fastener 100 to control fluid flow from a second port 145 through the first auxiliary port 130, and a second valve 190 is positioned above a second auxiliary port 160 and connected to a fourth connection flange 170 of the connection fastener 100 to control fluid flow from a first port 115 through the second auxiliary port 160. Configured in this way, the first valve 185 and the second valve 190 can be closed to allow pressure to build up on both sides of the pipe system, and then the first valve 185 and / or the second valve 190 can be rapidly opened to allow fluid and debris from the second port 145 and / or the first port 115 to be purged out of the pipe system through the first auxiliary port 130 and / or the second auxiliary port 160.

[0072] In this configuration, during the construction of the piping assembly, the connecting fastener 100 can be installed between the first pipe section 15 and the second pipe section 25 of the piping system in place of a control valve or other sensitive components. Alternatively, if a control valve is installed during construction, it can be removed from the first pipe section 15 and the second pipe section 25, and the connecting fastener 100 can be installed between the first pipe section 15 and the second pipe section 25 in place of the control valve. The commutator internal 200 is mounted into the cavity 110 of the body 105 through the second auxiliary hole 160 and positioned such that the wall 235 guides fluid between the first hole 115 and the second auxiliary hole 160 and between the second hole 145 and the first auxiliary hole 130. A first valve 185 is mounted at the first auxiliary hole 130 and connected to a third connecting flange 140 to control fluid flow through the first auxiliary hole 130, and a second valve 190 is mounted at the second auxiliary hole 160 and connected to a fourth connecting flange 170 to control fluid flow through the second auxiliary hole 160. Once installed, the first valve 185 and the second valve 190 are closed to pressurize the piping system. Once pressurized, the first valve 185 is opened to drain fluid and debris from the piping system through the first auxiliary port 130, and / or the second valve 190 is opened to drain fluid and debris from the piping system through the second auxiliary port 160 to clean the piping system. Once cleaning is complete, the connection fixture 100 can be removed, and the control valve can be installed between the first pipe section 15 and the second pipe section 25. This process allows for cleaning of the piping system without the risk of wear or damage to the control valves during the cleaning process.

[0073] In some cases, operating process equipment such as pumps or compressors to perform cleaning operations may be advantageous. In some cases, effectively operating process equipment such as pumps or compressors to perform cleaning operations may require the throttling function of a control valve, which is replaced by a fixed connection device 100 during the cleaning process.

[0074] refer to Figure 9 The diagram illustrates a sixth exemplary pipe cleaning assembly 10F, which uses a connecting fastener 100 and a reversing internal 200 in a second position to clean a piping system and provide throttling and filtration functions while operating process equipment. In the pipe cleaning assembly 10F, a first reversing pipe 245 is positioned above a second auxiliary port 160 and connected to a fourth connecting flange 170 of the connecting fastener 100, and is in fluid communication with the second auxiliary port 160. Similarly, a second reversing pipe 250 is positioned above a first auxiliary port 130 and connected to a third connecting flange 140 of the connecting fastener 100, and is in fluid communication with the first auxiliary port 130. A valve 255, such as a butterfly valve or a ball valve, is positioned between the first reversing pipe 245 and the second reversing pipe 250 to control the flow of fluid from the first reversing pipe 245 to the second reversing pipe 250. This configuration allows for control of the fluid flow between the first port 115 and the second port 145 as needed to optimally suit the specific system and cleaning method used.

[0075] If necessary, the filter 50 may also be positioned between the commutator internals 200 and the second orifice 145 to capture and trap debris in the fluid flowing through the connection fixture 100, as described above.

[0076] In this configuration, during the construction of the piping assembly, the connection fastener 100 can be installed between the first pipe section 15 and the second pipe section 25 of the piping system in place of a control valve or other sensitive components. Alternatively, if a control valve is installed during construction, it can be removed from the first pipe section 15 and the second pipe section 25, and the connection fastener 100 can be installed between the first pipe section 15 and the second pipe section 25 in place of the control valve. A first directional pipe 245 is installed at the second auxiliary port 160 and connected to a fourth connecting flange 170. A second directional pipe 250 is installed at the first auxiliary port 130 and connected to a third connecting flange 140. A valve 255 is positioned between the first directional pipe 245 and the second directional pipe 250 and connected to both. If desired, a filter 50 can also be installed between the directional internals 200 and the second port 145 to capture and trap debris flowing through the connection fastener 100. Once installed, valve 255 is closed to pressurize the piping system, and once pressurized, valve 255 is opened to clean the piping system. Additionally, valve 255 can be used to throttle fluid flow through connection fixture 100 during the cleaning process. Once testing and / or cleaning are complete, connection fixture 100 can be removed, and a control valve can be installed between the first pipe section 15 and the second pipe section 25. This process allows for cleaning of the piping system without the risk of wear or damage to the control valve during the cleaning process.

[0077] refer to Figure 10 An exemplary valve cover 300 is shown, which can also be used with the connection fastener 100. The valve cover 300 has a generally cylindrical wall 305 with an open first end 310 forming a valve seat 315 and a closed second end 320 closed by an end wall 330. The outer diameter of the wall 305 of the valve cover 300 closely matches the inner diameter of the second auxiliary hole 160 of the connection fastener 100. This minimal clearance provides a sufficient seal against debris between the body 105 of the connection fastener 100 and the valve cover 300. A radially extending flange 325 extends from and surrounds the second end 320 and can be used to house the valve cover 300 in the second auxiliary hole 160 and to secure the valve cover 300 to a fourth connection flange 170 (see example). Figure 11Multiple openings are formed through wall 305 near the first end 310 to guide fluid flow through the connecting fastener 100. In the illustrated example, the multiple openings include a first opening 340, a second opening 345 aligned with the first opening 340 on the opposite side of wall 305, and a third opening 350 positioned between and aligned substantially perpendicular to the first and second openings 340. A protrusion 355 extends from the outer surface of end wall 330 and has one or more flat surfaces 360 configured as an engagement tool to allow valve cover 300 to be rotated within the connecting fastener 100 without removal of valve cover 300 from the connecting fastener 100. This provides a faster, easier, and more economical option for cleaning, preferably by rotating valve cover 300 in 90-degree increments within the connecting fastener 100. The valve cover 300 may also have one or more external indicators 365, for example on the outer surface of the end wall 330, which allow reliable external identification of the position of the first opening 340, the second opening 345, and the third opening 350, and thus the selected cleaning mode, without moving the valve cover 300 from the connection and fixing device 100. In addition to or instead of the external indicators 365, the valve cover 300 may include a pawl or locking mechanism to help accurately position the valve cover 300 within the connection and fixing device 100 such that the first opening 340, the second opening 345, and the third opening 355 are properly aligned with the corresponding holes in the connection and fixing device 100.

[0078] The valve cover 300 can be manufactured as a separate component and attached together, or it can be manufactured as a single, integrated, monolithic component using additive manufacturing technology, as described above.

[0079] In some cases, it may also be necessary to limit the flow rate through the connecting fixture 100. In addition to selecting a cleaning mode, the valve cover 300 can rotate within the connecting fixture 100 to adjust the maximum Cv and offset the first opening 340, the second opening 345, and the third opening 350 from the orifice to create a restriction between the valve cover 300 and the connecting fixture 100. This flow restriction mode is available without the need for pneumatic actuators, which significantly reduces costs.

[0080] refer to Figure 11The diagram illustrates a seventh exemplary pipe cleaning assembly 10G, which uses a connecting fastener 100 and a valve cover 300 and can be used to clean pipe systems. In the pipe cleaning assembly 10G, the valve cover 300 is inserted through a second auxiliary hole 160 of the connecting fastener 100, positioned within a cavity 110 of the body 105, and secured in place by an annular plate 370 connected to a fourth connecting flange 170, with a flange 325 fixed between the body 105 and the annular plate 370. A first plate 175 is also fixed above the first auxiliary hole 130. The valve cover 300 is positioned in a first position such that a third opening 350 is substantially aligned with a first hole 115, the first opening 340 and the second opening 345 are blocked by the body 105, and the open first end 310 is substantially aligned with a second hole 145, such that the valve cover 300 guides fluid between the first hole 115 and the second hole 145 and prevents fluid from flowing into the first auxiliary hole 130 and the second auxiliary hole 160.

[0081] If needed, the filter 50 can also be positioned between the valve cover 300 and the second orifice 145 to capture and trap debris in the fluid flowing through the connection fixture 100, as described above. Except in this example, the filter 50 is fixed to the first end 310 of the valve cover 300, rather than the commutator internals 200.

[0082] In this configuration, during the construction of the piping assembly, the connecting fastener 100 can be installed between the first pipe segment 15 and the second pipe segment 25 of the piping system in place of a control valve or other sensitive components. Alternatively, if a control valve is installed during construction, it can be removed from the first pipe segment 15 and the second pipe segment 25, and the connecting fastener 100 can be installed between the first pipe segment 15 and the second pipe segment 25 in place of the control valve. The valve cover 300 is installed through the second auxiliary hole 160 into the cavity 110 of the body 105 and positioned in a first position such that the valve cover 300 guides fluid between the first hole 115 and the second hole 145 and prevents fluid from flowing to the first auxiliary hole 130 and the second auxiliary hole 160. The annular plate 370 is then connected to the fourth connecting flange 170 to secure the valve cover 300 within the connecting fastener 100, and the first plate 175 is positioned above the first auxiliary hole 130 and connected to the third connecting flange 140 to seal the first auxiliary hole 130. If already installed, the threaded member 35 can be loosened without removing the ring plate 370, and the valve cover 300 can be rotated into the desired position within the connecting fastener 100 without removing the valve cover 300 from the connecting fastener 100. The threaded member 35 can then be tightened to secure the ring plate 370 and position the valve cover 300 in the first position. If desired, a filter 50 can be installed between the valve cover 300 and the second hole 145 to capture and trap debris flowing through the connecting fastener 100. Pressurized fluid is then flowed through the piping system to clean it. Once cleaning is complete, the connecting fastener 100 can be removed, and the control valve can be installed between the first pipe section 15 and the second pipe section 25. This process allows for cleaning of the piping system without the risk of wear or damage to the control valve during the cleaning process.

[0083] refer to Figure 12 The diagram illustrates an eighth exemplary pipe cleaning assembly 10H, which uses a connecting fastener 100 and a valve cover 300 and can be used to clean a pipe system. In the pipe cleaning assembly 10H, the valve cover 300 is also inserted through a second auxiliary hole 160 of the connecting fastener 100, positioned within a cavity 110 of the body 105, and secured in place by an annular plate 370, as described above. The valve cover 300 is positioned in a second position such that a third opening 350 is substantially aligned with a first auxiliary hole 130, the first opening 340 and the second opening 345 are blocked by the body 105, and the open first end 310 is substantially aligned with a second hole 145, thereby allowing the valve cover 300 to guide fluid between the second hole 145 and the first auxiliary hole 130 and to prevent fluid from flowing to the first hole 115 and the second auxiliary hole 160.

[0084] Although not in Figure 12 As shown, but the filter 50 may also be positioned between the valve cover 300 and the second hole 145 to capture and trap debris in the fluid flowing through the connection fixture 100, as described above.

[0085] In this configuration, during the construction of the piping assembly, the connecting fastener 100 can be installed between the first pipe section 15 and the second pipe section 25 of the piping system in place of a control valve or other sensitive components. Alternatively, if a control valve is installed during construction, it can be removed from the first pipe section 15 and the second pipe section 25, and the connecting fastener 100 can be installed between the first pipe section 15 and the second pipe section 25 in place of the control valve. The valve cover 300 is installed through the second auxiliary hole 160 into the cavity 110 of the body 105 and positioned in a second position such that the valve cover 300 guides fluid between the second hole 145 and the first auxiliary hole 130 and prevents fluid from flowing to the first hole 115 and the second auxiliary hole 160. The annular plate 370 is then connected to the fourth connecting flange 170 to secure the valve cover 300 within the connecting fastener 100. If already installed, the threaded member 35 can be loosened without removing the ring plate 370, and the valve cover 300 can be rotated into the desired position within the connecting fastener 100 without removing the valve cover 300 from the connecting fastener 100. The threaded member 35 can then be tightened to secure the ring plate 370 and position the valve cover 300 in the second position. If desired, a filter 50 can be installed between the valve cover 300 and the second hole 145 to capture and trap debris flowing through the connecting fastener 100. Pressurized fluid is then flowed through the piping system to clean it. Once cleaning is complete, the connecting fastener 100 can be removed, and the control valve can be installed between the first pipe section 15 and the second pipe section 25. This process allows for cleaning of the piping system without the risk of wear or damage to the control valve during the cleaning process.

[0086] refer to Figure 13 The diagram illustrates a ninth exemplary pipe cleaning assembly 10I, which utilizes a connecting fastener 100 and a valve cover 300 and can be used to clean pipe systems. In the pipe cleaning assembly 10I, the valve cover 300 is also inserted through a second auxiliary hole 160 of the connecting fastener 100, positioned within a cavity 110 of the body 105, and secured in place by an annular plate 370, as described above. The valve cover 300 is positioned in a third position such that a first opening 340 is substantially aligned with a first hole 115, a second opening 345 is substantially aligned with a first auxiliary hole 130, and a third opening 350 is blocked by the body 105 to guide fluid between the first hole 115 and the first auxiliary hole 130 and to prevent fluid flow through the second auxiliary hole 160. The plate 375 is also secured to the valve cover 300 at a first end 310 to prevent fluid from flowing through the open first end 310 of the valve cover 300 and through the second hole 145.

[0087] In this configuration, during the construction of the piping assembly, the connecting fastener 100 can be installed between the first pipe section 15 and the second pipe section 25 of the piping system in place of a control valve or other sensitive components. Alternatively, if a control valve is installed during construction, it can be removed from the first pipe section 15 and the second pipe section 25, and the connecting fastener 100 can be installed between the first pipe section 15 and the second pipe section 25 in place of the control valve. A plate 375 is secured to the first end 310 of the valve cover 300 to prevent fluid flow through the open first end 310 and the second hole 145 of the valve cover 300. The valve cover 300 is installed through the second auxiliary hole 160 into the cavity 110 of the body 105 and positioned in a third position such that the valve cover 300 guides fluid between the first hole 115 and the first auxiliary hole 130 and prevents fluid flow to the second auxiliary hole 160. An annular plate 370 is then connected to a fourth connecting flange 170 to secure the valve cover 300 within the connecting fastener 100. If already installed, the threaded member 35 can be loosened without removing the ring plate 370, and the valve cover 300 can be rotated into the desired position within the connecting fastener 100 without removing the valve cover 300 from the connecting fastener 100. The threaded member 35 can then be tightened to secure the ring plate 370 and position the valve cover 300 in the third position. Pressurized fluid is then flowed through the piping system to clean it. Once cleaning is complete, the connecting fastener 100 can be removed, and the control valve can be installed between the first pipe section 15 and the second pipe section 25. This process allows for cleaning of the piping system without the risk of wear or damage to the control valve during the cleaning process.

[0088] refer to Figure 14 An exemplary valve cover assembly 400 is shown, which includes a valve cover 300A, an actuator 405, and a valve plug 415, and can also be used with a connection fastener 100 to clean a piping system. The valve cover assembly 400 provides throttling control of fluid flow through the connection fastener 100 in all cleaning modes and provides rapid opening in all cleaning modes to temporarily generate high pressure and high speed to improve cleaning. The valve cover 300A is the same as the valve cover 300 described in detail above, except that the valve cover 300A has an opening 335 formed in the end wall 330 to receive the actuator shaft 410 of the actuator 405 passing therethrough. The actuator 405 is mounted to the valve cover 300A, for example, to a protrusion 355 of the valve cover 300A (see example...). Figure 15The actuator 405 has an actuator shaft 410 extending through an opening 335 in the end wall 330 of the valve cover 300A. The actuator 405 can be any type of manual or automatic actuator capable of linearly moving the actuator shaft 410 along its longitudinal axis. A valve plug 415 is fixed to the end of the actuator shaft 410 and positioned within the valve cover 300A such that the valve plug 415 is movable within the valve cover 300A between a first position and a second position, in which the valve plug 415 is spaced apart from the valve seat 315 of the valve cover 300A and allows fluid to flow through the valve cover 300A (see, for example...). Figure 15 In the second position, valve plug 415 contacts valve seat 315 and prevents fluid from flowing through valve cover 300A. In addition to the first (open) position and the second (closed) position, valve plug 415 can also be positioned in any number of intermediate positions between the first and second positions to limit the flow rate through the connecting fixing device 100.

[0089] refer to Figure 15 The diagram illustrates a tenth exemplary pipe cleaning assembly 10J, which utilizes a connecting fastener 100 and a valve cover assembly 400 and can be used to clean pipe systems. In the pipe cleaning assembly 10J, the valve cover 300A of the valve cover assembly 400 is inserted through a second auxiliary hole 160 of the connecting fastener 100, positioned within a cavity 110 of the body 105, and secured in place by an annular plate 370 connected to a fourth connecting flange 170, with a flange 325 fixed between the body 105 and the annular plate 370. A first plate 175 is also fixed above the first auxiliary hole 130 to prevent fluid flow through the first auxiliary hole 130. The valve cover 300A can be positioned in a first position such that the third opening 350 is approximately aligned with the first hole 115, the first opening 340 and the second opening 345 are blocked by the body 105, and the open first end 310 is approximately aligned with the second hole 145. Alternatively, the valve cover 300A can be positioned in a third position such that the first opening 340 is approximately aligned with the first hole 115, the second opening 345 is approximately aligned with the first auxiliary hole 130, and the third opening 350 is blocked by the body 105. This allows the valve cover 300A to guide fluid between the first hole 115 and the second hole 145 and to prevent fluid from flowing to the second auxiliary hole 160. In the first position, the valve cover 300A also prevents fluid flow through the first auxiliary hole 130.

[0090] If needed, the filter 50 can also be positioned between the valve cover 300 and the second hole 145 to capture and trap debris in the fluid flowing through the connection fixture 100, as described above.

[0091] In this configuration, during the construction of the piping assembly, the connecting fastener 100 can be installed between the first pipe section 15 and the second pipe section 25 of the piping system in place of a control valve or other sensitive components. Alternatively, if a control valve is installed during construction, it can be removed from the first pipe section 15 and the second pipe section 25, and the connecting fastener 100 can be installed between the first pipe section 15 and the second pipe section 25 in place of the control valve. A valve plug 415 is mounted within a valve cover 300A such that the valve plug 415 is movable within the valve cover 300A, as described above. An actuator 405 is mounted to the valve cover 300A such that an actuator shaft 410 extends through an opening 335 in the end wall 330, and the actuator shaft 410 is fixed to the valve plug 415 to move the valve plug 415 within the valve cover 300A. The valve cover 300A is installed into the cavity 110 of the body 105 through the second auxiliary hole 160 and positioned in a first or third position, such that the valve cover 300A guides fluid between the first hole 115 and the second hole 145 and prevents fluid from flowing into the second auxiliary hole 160. When positioned in the first position, the valve cover 300A also prevents fluid from flowing into the first auxiliary hole 130. If positioned in the third position, the first plate 175 is positioned above the first auxiliary hole 130 and connected to the third connecting flange 140 to seal the first auxiliary hole 130. The ring plate 370 is then connected to the fourth connecting flange 170 to secure the valve cover 300A within the connecting fastener 100. If already installed, the threaded member 35 can be loosened without removing the ring plate 370, and the valve cover 300A can be rotated into the desired position within the connecting fastener 100 without removing the valve cover 300A from the connecting fastener 100. The threaded member 35 can then be tightened to secure the ring plate 370, positioning the valve cover 300A in the first or third position. If necessary, a filter 50 can be installed between the valve cover 300A and the second orifice 145 to capture and trap debris flowing through the connecting fixture 100. Move the valve plug 415 to the second (closed) position until the pressure within the piping system reaches a predetermined pressure. Once the predetermined pressure has been reached, move the valve plug 415 to the first (open) position to allow pressurized fluid to flow through the piping system to clean it. Once cleaning is complete, the connecting fixture 100 can be removed, and the control valve can be installed between the first pipe section 15 and the second pipe section 25. This process allows for cleaning of the piping system without the risk of wear or damage to the control valve during the cleaning process.

[0092] refer to Figure 16The eleventh exemplary pipe cleaning assembly 10K is shown, which uses a connecting fastener 100 and a valve cover assembly 400 and can be used to clean pipe systems. In the pipe cleaning assembly 10K, the valve cover 300A of the valve cover assembly 400 is inserted through a second auxiliary hole 160 of the connecting fastener 100, positioned within a cavity 110 of the body 105, and secured in place by an annular plate 370, as described above. The valve cover 300A is positioned in a second position such that a third opening 350 is substantially aligned with a first auxiliary hole 130, the first opening 340 and the second opening 345 are blocked by the body 105, and the open first end 310 is substantially aligned with a second hole 145, thereby allowing the valve cover 300 to guide fluid between the second hole 145 and the first auxiliary hole 130 and to prevent fluid from flowing to the first hole 115 and the second auxiliary hole 160.

[0093] If needed, the filter 50 can also be positioned between the valve cover 300 and the second hole 145 to capture and trap debris in the fluid flowing through the connection fixture 100, as described above.

[0094] In this configuration, during the construction of the piping assembly, the connecting fastener 100 can be installed between the first pipe section 15 and the second pipe section 25 of the piping system in place of a control valve or other sensitive components. Alternatively, if a control valve is installed during construction, it can be removed from the first pipe section 15 and the second pipe section 25, and the connecting fastener 100 can be installed between the first pipe section 15 and the second pipe section 25 in place of the control valve. A valve plug 415 is mounted within a valve cover 300A such that the valve plug 415 is movable within the valve cover 300A, as described above. An actuator 405 is mounted to the valve cover 300A such that an actuator shaft 410 extends through an opening 335 in the end wall 330, and the actuator shaft 410 is fixed to the valve plug 415 to move the valve plug 415 within the valve cover 300A. The valve cover 300A is installed through the second auxiliary hole 160 into the cavity 110 of the body 105 and positioned in the second position, such that the valve cover 300A guides fluid between the second hole 145 and the first auxiliary hole 130 and prevents fluid from flowing to the first hole 115 and the second auxiliary hole 160. The annular plate 370 is then connected to the fourth connecting flange 170 to secure the valve cover 300A within the connecting fastener 100. If already installed, the threaded member 35 can be loosened without removing the annular plate 370, and the valve cover 300 can be rotated into the desired position within the connecting fastener 100 without removing the valve cover 300 from the connecting fastener 100. The threaded member 35 can then be tightened to secure the annular plate 370 and position the valve cover 300 in the second position. If desired, a filter 50 can also be installed between the valve cover 300A and the second hole 145 to capture and trap debris flowing through the connecting fastener 100. The valve plug 415 is moved to the second (closed) position until the pressure within the piping system reaches a predetermined pressure. Once the predetermined pressure is reached, valve plug 415 is moved to the first (open) position to allow pressurized fluid to flow through the piping system to clean it. Once cleaning is complete, connection fixture 100 can be removed, and the control valve can be installed between the first pipe section 15 and the second pipe section 25. This process allows the piping system to be cleaned without the risk of wear or damage to the control valve during the cleaning process.

[0095] refer to Figure 17The diagram illustrates a twelfth exemplary pipe cleaning assembly 10L, which utilizes a connecting fastener 100 and a valve cover assembly 400, and can be used to clean pipe systems. In the pipe cleaning assembly 10L, the valve cover 300A of the valve cover assembly 400 is inserted through a second auxiliary hole 160 of the connecting fastener 100, positioned within a cavity 110 of the body 105, and secured in place by an annular plate 370, as described above. The valve cover 300A is positioned in a third position such that a first opening 340 is substantially aligned with a first hole 115, a second opening 345 is substantially aligned with a first auxiliary hole 130, and a third opening 350 is blocked by the body 105, such that the valve cover 300A guides fluid between the first hole 115 and the first auxiliary hole 130 and prevents fluid from flowing into the second auxiliary hole 160. The plate 375 is also secured to the valve cover 300A at a first end 310 to prevent fluid from flowing through the open first end 310 of the valve cover 300A and through the second hole 145.

[0096] In this configuration, during the construction of the piping assembly, the connecting fastener 100 can be installed between the first pipe section 15 and the second pipe section 25 of the piping system in place of a control valve or other sensitive components. Alternatively, if a control valve is installed during construction, it can be removed from the first pipe section 15 and the second pipe section 25, and the connecting fastener 100 can be installed between the first pipe section 15 and the second pipe section 25 in place of the control valve. A valve plug 415 is mounted within a valve cover 300A such that the valve plug 415 is movable within the valve cover 300A, as described above. A plate 375 is fixed to a first end 310 of the valve cover 300A to prevent fluid from flowing through the open first end 310 and the second hole 145 of the valve cover 300A. An actuator 405 is mounted to the valve cover 300A such that an actuator shaft 410 extends through an opening 335 in the end wall 330, and the actuator shaft 410 is fixed to the valve plug 415 to move the valve plug 415 within the valve cover 300A. The valve cover 300A is installed into the cavity 110 of the body 105 through the second auxiliary hole 160 and positioned in the third position, such that the valve cover 300A guides fluid between the first hole 115 and the first auxiliary hole 130 and prevents fluid from flowing into the second auxiliary hole 160. The ring plate 370 is then connected to the fourth connecting flange 170 to secure the valve cover 300A within the connecting fastener 100. If already installed, the threaded member 35 can be loosened without removing the ring plate 370, and the valve cover 300 can be rotated into the desired position within the connecting fastener 100 without removing it from the connecting fastener 100. The threaded member 35 can then be tightened to secure the ring plate 370 and position the valve cover 300 in the third position. The valve plug 415 is moved to the second (closed) position until the pressure in the piping system reaches a predetermined pressure. Once the predetermined pressure has been reached, the valve plug 415 is moved to the first (open) position to allow pressurized fluid to flow through the piping system for cleaning. Once cleaning is complete, the connection fixture 100 can be removed and the control valve can be installed between the first pipe section 15 and the second pipe section 25. This process allows the piping system to be cleaned without the risk of wear or damage to the control valve during the cleaning process.

[0097] refer to Figure 18The thirteenth exemplary pipe cleaning assembly 10M is shown, which uses a connecting fastener 100 and a valve cover assembly 400 and can be used to clean pipe systems. In the pipe cleaning assembly 10M, the valve cover 300A of the valve cover assembly 400 is inserted through a second auxiliary hole 160 of the connecting fastener 100, positioned within a cavity 110 of the body 105, and secured in place by an annular plate 370, as described above. The valve cover 300A is positioned in a third position such that a first opening 340 is substantially aligned with a first hole 115, a second opening 345 is substantially aligned with a first auxiliary hole 130, and a third opening 350 is blocked by the body 105, such that the valve cover 300A guides fluid between the first hole 115, the second hole 145, and the first auxiliary hole 130 and prevents fluid from flowing to the second auxiliary hole 160. When the pipe system is pressurized, this configuration allows fluid flow and debris to be purged out of the pipe system through the first auxiliary hole 130, which is highly advantageous for closed pipe systems that do not have existing discharge locations. However, this cleaning method requires a large steady flow, which is often unavailable. In these cases, valve plug 415 can be moved to a second (closed) position to stop fluid flow through the connection fixture 100 and allow pressure to increase within the piping system. Once the target pressure has been reached, valve plug 415 can be quickly moved to a first (open) position via actuator 405 to depressurize the piping system and allow fluid and debris to be purged from the piping system at high flow rates. This technique allows for pressurization of the piping system using a relatively small compressor while still achieving high flow rates.

[0098] In this configuration, during the construction of the piping assembly, the connecting fastener 100 can be installed between the first pipe section 15 and the second pipe section 25 of the piping system in place of a control valve or other sensitive components. Alternatively, if a control valve is installed during construction, it can be removed from the first pipe section 15 and the second pipe section 25, and the connecting fastener 100 can be installed between the first pipe section 15 and the second pipe section 25 in place of the control valve. A valve plug 415 is mounted within the valve cover 300A such that the valve plug 415 is movable within the valve cover 300A, as described above. An actuator 405 is mounted to the valve cover 300A such that an actuator shaft 410 extends through an opening 335 in the end wall 330, and the actuator shaft 410 is secured to the valve plug 415 to move the valve plug 415 within the valve cover 300A. The valve cover 300A is installed through the second auxiliary hole 160 into the cavity 110 of the body 105 and positioned in the third position, such that the valve cover 300A guides fluid between the first hole 115, the second hole 145, and the first auxiliary hole 130 and prevents fluid from flowing into the second auxiliary hole 160. The annular plate 370 is then connected to the fourth connecting flange 170 to secure the valve cover 300A within the connecting fastener 100. If already installed, the threaded member 35 can be loosened without removing the annular plate 370, and the valve cover 300 can be rotated into the desired position within the connecting fastener 100 without removing it from the connecting fastener 100. The threaded member 35 can then be tightened to secure the annular plate 370 and position the valve cover 300 in the third position. The valve plug 415 is moved to the second (closed) position until the pressure in the piping system reaches a predetermined pressure. Once the predetermined pressure is reached, the valve plug 415 is moved to the first (open) position to allow pressurized fluid to flow through the piping system for cleaning. Once cleaning is complete, the connection fixture 100 can be removed and the control valve can be installed between the first pipe section 15 and the second pipe section 25. This process allows the piping system to be cleaned without the risk of wear or damage to the control valve during the cleaning process.

[0099] While various embodiments have been described above, this disclosure is not intended to be limited thereto. Changes may be made to the disclosed embodiments, which shall still be within the scope of the appended claims.

Claims

1. A pipe cleaning assembly, comprising: A connecting and fixing device includes a body defining a cavity, a first hole in fluid communication with the cavity, a first connecting flange extending from and surrounding the first hole, a first auxiliary hole in fluid communication with the cavity and coaxially aligned with the first hole, a third connecting flange extending from and surrounding the first auxiliary hole, a second hole in fluid communication with the cavity, a second connecting flange extending from and surrounding the second hole, a second auxiliary hole in fluid communication with the cavity and coaxially aligned with the second hole, and a fourth connecting flange extending from and surrounding the second auxiliary hole. as well as A commutator internal, located within the cavity of the body, the commutator internal including a wall extending across the commutator internal and guiding fluid flow through the connection fixing device; as well as The commutator internals also include: A cylindrical wall having an open first end and an open second end opposite to the open first end; The first opening is formed through the wall of the cylinder; A second opening, formed through the cylindrical wall, is coaxially aligned with the first opening and positioned on the cylindrical wall opposite to the first opening; and A wall that extends completely through the interior of the cylindrical wall and is configured to prevent fluid flow between the first opening and the second opening, allow fluid flow between the first opening and the open first end, and allow fluid flow between the second opening and the open second end.

2. The pipe cleaning assembly according to claim 1, further comprising: A first valve, which is connected to the third connecting flange of the connecting fixing device, controls the fluid flow through the first auxiliary hole; as well as A plate, which is positioned above the second auxiliary hole and fixed to the body to prevent fluid flow through the second auxiliary hole.

3. The pipe cleaning assembly according to claim 2, wherein, The axis of the first hole is perpendicular to the axis of the second hole.

4. The pipe cleaning assembly of claim 2, comprising a second valve connected to the fourth connecting flange of the connecting fixing device to control fluid flow through the second auxiliary orifice.

5. The pipe cleaning assembly according to claim 1, wherein, The commutator internals guide fluid between the first and second holes and prevent fluid flow to the first and second auxiliary holes.

6. The pipe cleaning assembly of claim 5, comprising a filter positioned between the commutator internals and the second orifice.

7. The pipe cleaning assembly according to claim 1, wherein, The commutator internals guide fluid between the first orifice and the second auxiliary orifice, and between the second orifice and the first auxiliary orifice.

8. The pipe cleaning assembly of claim 7, comprising a first valve connected to the third connecting flange of the connection fixing device and / or a second valve connected to the fourth connecting flange of the connection fixing device, for controlling fluid flow through the first auxiliary port and / or the second auxiliary port.

9. The pipe cleaning assembly according to claim 1, wherein, The commutator internals also include: The first reversing pipe is connected to the fourth connecting flange of the connecting and fixing device and is in fluid communication with the second auxiliary hole; A second reversing pipe, which is connected to the third connecting flange of the connecting fixing device and is in fluid communication with the first auxiliary hole; and A valve, which is positioned between the first reversing pipe and the second reversing pipe; wherein, The commutator internals redirect fluid from the first orifice to the second auxiliary orifice and from the first auxiliary orifice to the second orifice.

10. The pipe cleaning assembly of claim 9, comprising a filter positioned between the commutator internals and the second orifice.

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