Kit of parts for releasably coupling and securing tubular element to joint, joint system comprising such kit of parts, and method for assembling and disassembling assembly comprising such joint system

Abstract

A kit of parts configured for releasably coupling and securing a tubular element to a connector joint is presented. The kit of parts includes a tubular element, a first clamping ring configured to be attachable to the tubular element, a second clamping ring, and a latch pivotally attached to the second clamping ring at a pivot axis. The latch end includes a barbed hook portion and is arranged such that the barbed hook portion extends radially inward with respect to the second clamping ring and the barbs extend axially toward the second clamping ring such that an undercut is formed between an axially extending body section of the latch and the barbs. The first clamping ring includes a groove adapted and configured to receive a barb, where an edge shaped between the at least one groove and a radially outer periphery of the first clamping ring is sized and configured to be receivable in the undercut.

Description

Technical Field

[0001] The present invention claims to provide a component kit for releasably connecting and securing a tubular element to a connector, a connector system including the component kit, and a method for assembling and disassembling an assembly including the connector system, as described in the appended claims. Background Technology

[0002] For many technical applications, it is necessary to perform in-situ measurements of fluids in containers, vessels, fluid lines, or other containment structures configured to contain fluids. A connector can be arranged on the container, and a retractable probe can be housed in the connector and extend into the fluid. In known devices, a clamping ring is provided on the connector to lock the probe in place by friction. The clamping ring can also provide a seal at the interface with the probe.

[0003] However, if the pressure of the fluid being tested may rise above a certain threshold, the probe may be forced to disengage from the connector.

[0004] A similar problem may arise when securing other tubular elements (such as fluid conduits) to the connector using clamping rings: while the arrangement offers superior versatility, the securing may fail as fluid pressure increases.

[0005] DE 10 2014 205 889 discloses a connector assembly in which a probe or other tubular element is secured to the connector via a form-fit locking mechanism. In one embodiment, two latches with barbed hooks formed at their free ends are disposed on the tubular element and are designed to engage with a mating structure disposed on the connector to provide form-fit locking between the connector and the tubular element. However, the latches engage with the connector on their underside and face the container, which may obstruct visual inspection of the secure locking. The movable latches are attached to the probe, so the suspended latches may be considered cumbersome when manipulating the probe. The latches must be manually operated when the probe is installed to the connector. The seal is disposed directly in the connector, so the probe must overcome the friction of the seal to advance and retract within the connector, which may increase the inconvenience of probe insertion and removal and accelerate seal wear. Therefore, while DE 10 2014 205889 provides a substantially functional device, some details warrant further consideration. Summary of the Invention

[0006] The purpose of this disclosure is to address the subject matter initially mentioned. In one aspect, the subject matter disclosed herein aims to overcome at least some of the disadvantages of the prior art. More specifically, it should be possible to securely lock components (e.g., tubular lines, instruments, etc.) to fittings that provide access to the interior of a containment structure (e.g., but not limited to vessels, containers, or lines) configured to contain fluid. In a more specific aspect, certain embodiments of the disclosed subject matter should be suitable for addition to existing setups. In particular, the component kit can be used to allow the use of existing equipment in situations where increased fluid pressure may occur, wherein the increased fluid pressure refers to pressure exceeding a threshold applicable to existing equipment without the component kit.

[0007] Therefore, in one aspect, a component assembly configured for releasably coupling and securing a tubular element to a connector joint is disclosed, the component assembly including the tubular element, a first clamping ring configured to attach to the tubular element, and a latch. The latch is pivotally attached to a second clamping ring at a pivot axis. The latch extends axially from the pivot axis to a latch end, wherein the latch end is movable radially along the second clamping ring by pivoting movement of the latch about the pivot axis. The latch end includes a barbed hook and is arranged such that the barbed hook extends radially inward relative to the second clamping ring, and the barbs extend axially toward the second clamping ring. Therefore, an undercut is formed between the axially extending body section of the latch and the barbs. The first clamping ring includes at least one groove in its axial surface, the at least one groove being adapted and configured to receive the barbs. The dimensions and construction of the edge formed between the groove and the radially outer periphery of the first clamping ring are designed to receive in the undercut between the axially extending body section formed in the latch and the barbs of the latch. In a non-limiting embodiment, the tubular element may be a replaceable instrument, for example, including or equipped with a mounting structure for a probe configured to measure at least one physical property of a fluid in a container, vessel, fluid line, etc., fluidly connected to the connector joint. However, in other embodiments, the tubular element may be, for example, a fluid line configured for releasable connection via the connector joint to the container, vessel, fluid line, or other containment structure configured to contain fluid.

[0008] The second clamping ring is to be mounted on the connector connector, wherein the latch end extends beyond the free end of the connector connector and the barbed hook points radially inward. Further contemplated is that a tubular element is attached to the connector connector, and a first clamping ring is mounted on the tubular element, wherein at least one of the at least one recess is adapted and configured to receive a barb opposing the connector connector. Thus, the barb can be received in the at least one recess, wherein an edge formed between the recess and the radially outer periphery of the first clamping ring is also received within the undercut formed between the axially extending body section of the latch and the barb of the latch. Therefore, the barbed hook and the first clamping ring together provide a form-fit locking of the tubular element to the connector connector in the axial direction of the tubular element, while the barb and the edge interlock and secure the latch in the radial direction, such that the latch is securely locked to the first clamping ring in the form-fit locking position.

[0009] For example, removable instruments are typically attached to the connector from the top, or at least from a hemispherical region above the fluid-receiving structure, typically at an angle equal to or greater than 15° to the horizontal plane. This ensures reliable measurements because some probes are filled with fluid and allows for cleaning of the probes in a maintenance location inside the connector. Therefore, the free end of the connector preferably points upwards and away from any fluid-receiving structure. Thus, if the component kits presented herein are used as intended, the latching end typically extends upwards and is not obstructed by the fluid-receiving structure. In some embodiments, the probes may be allowed to be mounted upside down at an angle less than 15° to the horizontal plane. In these cases, the free end of the connector also faces away from the direction of the fluid-receiving structure on which the connector is mounted, and is therefore not obstructed by said fluid-receiving structure. Therefore, unobstructed optical inspection of the functional interlock between the barbed hook and the first clamping ring is always possible. Optical inspection can be performed along a line of sight substantially aligned with the direction in which the tubular element is attached to the connector, such as the direction in which the instrument or probe is inserted through the connector. Ergonomics are greatly improved, which naturally comes with increased safety against manipulation errors. Furthermore, the weight and more complex structure of the latch are located at the fixed connector joint, while the only component for mounting the kit to the tubular element is the first clamping ring. Therefore, the manipulation of the movable part (tubular joint) is not hindered by the increased weight, asymmetry, or complex shape.

[0010] Given the disclosure provided below, other effects and advantages of the disclosed subject matter (whether or not explicitly mentioned) will become apparent.

[0011] It should be noted that, within the framework of this disclosure, the use of the article "a" or "an" does not imply a singularity, nor does it exclude the presence of multiple said components or features. Therefore, it should be understood as meaning "at least one" or "one or more".

[0012] In one embodiment, the latch or its end may be preloaded radially inward to further support the interlocking of the latch or its barbed hook with the first clamping ring. A spring may be provided to achieve this preloading. This preloading allows for automatic fixing once the tubular element is inserted downward into the connector joint at a measured level, and it also holds the latch in a clearly defined position for easy user manipulation. In a preferred embodiment, the second clamping ring and / or the latch are provided with a limiting device that restricts the range of movement of the latch in its preload direction. Preferably, the limiting device is a protrusion on the latch and a contact surface on the second clamping ring. In this embodiment, the protrusion of the latch projects radially inward from a position near the pivot point. In this embodiment, the second clamping ring includes the contact surface, which the protrusion presses against by preloading in the absence of the first clamping ring or any other means of pushing the latch radially outward. In another embodiment, the limiting device is a protrusion on the second clamping ring and a contact surface on the latch. In this embodiment, the second clamping ring provides a radially outwardly extending protrusion to contact a contact surface on the latch, wherein the latch is pressed against the protrusion located on the second clamping ring by preload. Combinations of the two embodiments, such as two contacting protrusions, are also possible. Similarly, a limiting device can be positioned remotely from the pivot point, where the radially outward movement of the latch caused by preload can be limited by a suitable surface of the second clamping ring or a radially inwardly extending protrusion. The first embodiment of the protrusion on the latch and the contact surface of the second clamping ring is preferred because it facilitates the manufacture and assembly of the kit.

[0013] In an embodiment, the pivot axis of the latch can be located at least substantially at the end of the latch, i.e., at the end of the latch opposite to the latch end. Therefore, it can be specifically configured such that, when viewed from the latch end, the latch does not have an actuating cantilever extending beyond the pivot axis. Thus, the latch end can only be moved radially outward by intentional pulling actuation, i.e., into a position unlocked from the first clamping ring. Therefore, accidental unlocking actuation caused by gripping movements can be prevented. Preferably, the second clamping ring is equipped with two parallel sidewalls, the two parallel sidewalls including a common hole to retain the pivot axis of the latch, the pivot axis of the latch being centered in and guided by the two walls. In particular, the length and shape of the latch distal to the pivot axis, and the extension dimensions of the walls, ensure that there is no gap in the radial direction between the latch and the walls throughout the entire range of motion of the latch. Therefore, the risk of certain objects getting stuck between the two components and hindering pivoting or causing accidental movement of the latch is significantly reduced. Preferably, the portion of the latch located distal to the pivot axis is within the space between the two walls throughout its entire range of motion.

[0014] Furthermore, in one embodiment, the end surface at the latch end can be beveled, wherein, when viewed from the pivot axis, the radially outer side of the latch extends further than the radially inner side to provide a beveled contact surface. Therefore, when, for example, a first clamping ring mounted to the tubular element moves along the axis of the connector joint and toward the connector joint, such that the first clamping ring eventually abuts against the beveled contact surface of the latch, the first clamping ring forces the latch end to move radially outward until the front surface of the first clamping ring, facing away from the distal end of the tubular element, crosses the barbs of the latch. Thereafter, the latch end can return radially inward to interlock the barbed hook of the latch with the first clamping ring. If the latch is preloaded radially inward, the radial inward movement can be self-acting. This makes the device more comfortable and quick to use.

[0015] In one embodiment, the latch includes a protruding stop. The stop extends radially inward and is positioned between the pivot axis and the barbed hook. The axial distance between the proximal face of the stop and the distal portion of the barbed hook is greater than the axial extension dimension of the first clamping ring. Preferably, the axial distance between the proximal face of the stop and the distal portion of the barbed hook is less than twice the axial extension dimension of the first clamping ring, and most preferably, less than 1.5 times the axial extension dimension of the first clamping ring. A groove in the first clamping ring forces the user to push the tubular element further into the connector joint, which is unnecessary in normal operation, before the latch can be pulled radially outward, disengaging the barbs from the groove and allowing the first clamping ring to separate from the latch and the second clamping ring on which the latch is mounted. The protruding stop assists the user by preventing the tubular element from being accidentally pushed beyond the desired position: as long as the latch is not pulled away from the tubular element, the insertion action brings the first clamping ring closer to the stop and eventually ends the action. When the first clamping ring contacts the stop, the latch can be pulled radially outward: because the axial distance between the proximal face of the stop and the farthest portion of the barbed hook is greater than the axial extension dimension of the first clamping ring, the barbs are positioned above the groove in this location and can thus be pulled over the edge. In a preferred embodiment, the user will be able to see the tubular element inserted far enough to open the connection. This makes use more intuitive and prevents the tubular element from being inserted too deeply, making removal difficult.

[0016] In one embodiment, at least the second clamping ring, most preferably the first clamping ring, and the second clamping ring comprise two separable half-rings. This allows the kit to be mounted onto existing connector fittings and existing tubular elements, respectively. Many connector fittings are equipped with additional connectors, clamping rings, and / or flanges, which can make it difficult or impossible to slide the clamping ring to the ideal position for securing the fitting. By arranging the clamping ring as two separable half-rings, sliding installation is avoided. The half-rings can be connected, for example, by bolt and nut connectors or other tensioning devices or clamps. The ability to modify existing fittings using the kit of the present invention makes it ideal as an additional safety device used in addition to the primary means of connecting tubular elements to connector fittings provided by existing fittings.

[0017] The tubular element may also include a mounting structure for mounting a replaceable instrument. The replaceable instrument has a dedicated distal end. This dedicated distal end is specifically the end of the replaceable instrument intended to connect to a connector joint, for example, intended to be received inside the connector joint or within a fluid. A first clamping ring may be mounted to the tubular element such that at least one of the at least one groove of the first clamping ring is arranged on the proximal-facing front surface of the first clamping ring, i.e., on the front surface of the first clamping ring opposite to the dedicated distal end of the replaceable instrument. Furthermore, the first clamping ring is mounted at a non-zero distance from the dedicated distal end. Preferably, the first clamping ring is mounted at a distance from the dedicated distal end such that when the barbs of the barbed hook are received in the groove of the first clamping ring, the dedicated distal end is in a desired position relative to the connector joint. Thus, the first clamping ring allows the user to easily mark the desired insertion depth on the tubular element. In a more specific embodiment, the replaceable instrument may be a probe and include a transducer configured to measure at least one physical property of the fluid, wherein the transducer is located at a distal or dedicated distal end of the replaceable instrument or probe.

[0018] A connector system is also disclosed, comprising a connector connector and any of the aforementioned component kits. The connector connector has a free end, wherein a tubular element is configured to engage with the connector connector at the free end. A second clamping ring is mounted to the connector connector, and a first clamping ring is specifically mounted to the tubular element. In some embodiments, the second clamping ring may be mounted to the connector connector such that when the latch is positioned with its barbed hooks located radially inward of the latch, the latch extends beyond the free end of the connector connector.

[0019] Alternatively, the tubular element or its distal segments may be configured to be received within the connector joint. It should be noted that, within the framework of this disclosure, statements regarding the reception, insertion, or advancement of the tubular element into or through the connector joint or other component, or its corresponding configuration, should not be construed as relating to the entire tubular element. Rather, only a portion of the tubular element may be received, inserted, or advanced into or through the connector joint or other component.

[0020] A third clamping ring may be disposed at the free end of the connector joint, wherein the third clamping ring is configured to receive the tubular element through the third clamping ring and to lock the tubular element in a frictional manner by clamping. In a more specific embodiment, the third clamping ring may be provided with a sealing element or at least one sealing element configured to at least support a seal with the tubular element to prevent fluid leakage from the connector joint along the outside of the tubular element.

[0021] With the sealing element provided by the third clamping ring, the tubular element can be inserted into and removed from the connector joint through the third clamping ring when the third clamping ring is in the released position, thereby achieving low friction during insertion and removal of the tubular element and reducing wear on the sealing element during insertion and removal. In particular, the sealing element provided by the third clamping ring ensures a seal suitable for increased fluid pressures, i.e., for situations exceeding the connector pressure threshold applicable without the component kit according to the invention. For this purpose, the sealing element provided by the third clamping ring can support a seal provided by the connector joint itself.

[0022] When a connector is fluidly connected to a containment structure configured to contain fluid, wherein the containment structure may, in particular, include at least one of a vessel, container, and fluid line, a shut-off device may be fluidly disposed between the containment structure and the connector. The shut-off device can be used to close the fluid containment structure when replacing or removing tubular elements, particularly when the fluid contained in the fluid containment structure is at a pressure above atmospheric pressure. Preferably, the shut-off device allows isolation of a volume of the connector structure located between the shut-off device and a third clamping ring from the fluid in the containment structure. Preferably, the volume is equipped with a fluid inlet and / or outlet, which allows for equalization of the pressure between the ambient environment and the volume.

[0023] As described above, the connector joint can be extended in such a way that the free end of the connector joint faces upward or forms an angle greater than 15° with the horizontal plane.

[0024] In a further aspect of this disclosure, an assembly is disclosed comprising any of the aforementioned types of connector systems, wherein a second clamping ring is mounted to a connector connector such that the latch extends beyond the free end of the connector connector when positioned with its barbs pointing radially inward. The distal end of a tubular element is received in the connector connector, and at least one of the at least one grooves of the barbs, adapted and configured to receive the barbs, is disposed in the front surface of the first clamping ring opposite to the distal end of the tubular element. The barbs of the barbed hook portion of the latch are received in the groove of the first clamping ring, the groove being disposed in the front surface of the first clamping ring opposite to the distal end of the tubular element.

[0025] A method for assembling the aforementioned components includes inserting the distal end of a tubular element into a connector joint. At least one of the at least one grooves adapted and configured to receive barbs is disposed in a front surface of a first clamping ring opposite to the distal end of the tubular element. As the distal end of the tubular element is inserted into the connector joint, the front surface of the first clamping ring also faces away from the connector joint. The distal end of the tubular element advances within the connector joint, causing the first clamping ring to advance toward a latch end until the first clamping ring abuts against an inclined contact surface of the latch. As the tubular element or its distal end advances further within or through the connector joint, the first clamping ring advances along the inclined contact surface of the latch, thereby forcing the latch end to move radially outward. The tubular element advances further within the connector joint until the front surface of the first clamping ring opposite to the distal end of the tubular element passes the barbs of the latch. The latch end returns radially inward to radially overlap with the first clamping ring, thereby achieving the desired form-fit locking. With the latch preloaded radially inward, the latch end retracts radially inward self-driven. Subsequently, preferably, the tubular element with the first clamping ring attached is retracted in the direction of disengagement from the connector joint until the latch's barbs are received in a groove in the first clamping ring, the groove being located in the front surface of the first clamping ring opposite the distal end of the tubular element. This retraction can occur without user action due to the pressure of the fluid within the containment structure acting on the distal end of the tubular element. In other cases, the user pulls the tubular element out. In a further embodiment, the tubular element remains in the unretracted position such that the latch and the first clamping ring are arranged such that the receiving action occurs once the tubular element begins to move. In this embodiment, the engagement of the barbs with the groove can be considered an indication that the tubular element has moved since the last inspection due to an overpressure event, i.e., an increase in fluid pressure.

[0026] In an embodiment, the method may further include fastening a third clamping ring disposed at the end of the connector joint to clamp the tubular element. The third clamping ring may then lock the tubular element bidirectionally in a frictional manner, while the form-fit locking achieved by the latch and the first clamping ring is effective only in one direction, i.e., preventing the tubular element from retracting from the connector joint. As described above, the third clamping ring may include a sealing element configured to form a seal with the tubular element when the third clamping member is fastened around the tubular element.

[0027] A method for disassembling the aforementioned assembly includes advancing a tubular element into a connector joint until barbs of a latch are removed from a groove in a first clamping ring, the groove being disposed in the front surface of the first clamping ring opposite to the distal end of the tubular element. Subsequently, the latch end is pulled radially outward until the radially inner end of the barbed hook portion of the latch is radially outer of the first clamping ring. The tubular element can then be retracted from and disengaged from the connector joint. In an embodiment, the method may include, as a first step, releasing a third clamping ring that clamps and frictionally secures the tubular element.

[0028] It should be understood that the features and embodiments disclosed above can be combined with each other. It should also be understood that, within the scope of this disclosure and the claimed subject matter, those skilled in the art will readily conceive of other embodiments based on the content of this disclosure. Attached Figure Description

[0029] The subject matter of this disclosure will now be explained in more detail with the aid of selected exemplary embodiments shown in the accompanying drawings. The drawings show:

[0030] Figure 1 As described in the first embodiment of the connector system herein, the probe is partially inserted into the connector connector; and

[0031] Figure 2 An assembly using a connector system according to a first embodiment, wherein the probe is fully mounted and locked in the measuring device via a connector joint.

[0032] Figure 3 A component kit for a second embodiment of the connector system as described herein.

[0033] Figure 4 An isometric view of an exemplary embodiment of the first clamping ring.

[0034] Figure 5 An isometric view of an exemplary embodiment of the second clamping ring.

[0035] Figure 6 An assembly using a connector system according to a second embodiment, wherein the probe is fully installed and locked in the measuring device via the connector in one case, and the probe is in an unlocked maintenance position in another case.

[0036] It should be understood that the accompanying drawings may be highly schematic, and details not necessary for illustrative purposes may have been omitted for ease of understanding and depiction. It should also be understood that the drawings illustrate only selected exemplary embodiments, and embodiments not shown may still fall entirely within the scope of the subject matter disclosed and / or claimed herein. Detailed Implementation

[0037] Figure 1 and Figure 2 A first embodiment of the connector system 1 and component 1a are shown. A port 102 is provided through a flange 101 for inserting, for example, a probe through said port 102, wherein a transducer 31 is disposed at the distal end of said port. The transducer 31 is configured to measure at least one physical property of the fluid in the fluid volume 100. The connector system 1, configured to insert and retain the transducer 31 within and in the fluid volume 100, includes a probe or more generally replaceable instrument 32 mounted to a tubular element 3, and a connector 2 configured to receive said tubular element 3 through which it passes. Figure 2 In this configuration, the tubular element 3 is fully inserted, wherein the transducer 31 is placed inside the fluid volume 100, and the tubular element 3 is locked relative to the connector 2; the connector 2 is, for example, fixed to the fluid volume 100 via a flange 101a, which can be mounted to the wall of the receiving structure 101, which includes a corresponding port allowing access to the fluid volume 100. Figure 1 The tubular element 3 is shown partially inserted into or removed from the measuring device. Figure 1 The configuration shown is also referred to as the "maintenance position" because it allows the tubular element 3, replaceable instrument 32, and transducer 31 to be isolated from the fluid volume 100 by closing the shut-off device 6 for maintenance procedures such as cleaning, replacement, and / or repair.

[0038] In the illustrated embodiment, the first nozzle 5 is connected to port 102. Connector 2 is connected to the second nozzle 4 via a retaining nut 19. A shut-off device 6 is fluidly disposed between nozzles 5 and 4, and thus between the fluid volume 100 and connector 2. When probe 3 is removed from connector 2, shut-off device 6 is able to pressurize fluid volume 100 and isolate it from the environment. In some embodiments, the second nozzle 6 may be equipped with an additional port to allow adjustment of its internal pressure to a desired level and / or flushing of at least a portion of the replaceable instrument 32 or transducer 31 with a cleaning liquid, or to provide a calibration environment. A third clamping ring 9 is disposed at the free end of connector 2, and in this embodiment at the upper end of connector 2. Port 102 is typically disposed on the top side of a receiving structure configured to receive fluid, or in other words, configured to be adjacent to or located above the top surface of the fluid contained in fluid volume 100. In many cases, connector 2 may extend upward at an angle equal to or greater than about 15° to the horizontal direction, with its free end at the top. A clamping ring 9 (referred to herein as a third clamping ring) is disposed at the free end of the connector joint 2. According to some connector systems known in the art, the third clamping ring 9 can be tightened to lock the tubular element 3 relative to the connector joint 2 by friction. Furthermore, a sealing member 17 may be provided at the inner periphery of the third clamping ring 9. When the third clamping ring 9 is tightened, the sealing member 17 provides a seal between the third clamping ring 9 and the tubular element 3 to prevent leakage along the outer surface of the tubular element 3. When the third clamping ring 9 is loosened, the tubular element 3 can move axially within the connector joint 2. In the disclosed embodiments, in addition to the sealing member 17, a second sealing member 17a is present, which is an O-ring disposed in the distal region of the connector joint 2. When the third clamping ring 9 is loosened, for example, to move the tubular element 3 from a maintenance position to a measurement position or vice versa, the second sealing member 17a can prevent significant leakage. Because of the component kit according to the invention, this movement can only occur if the operator is able to physically push the tubular element 3 to move against fluid pressure. This limits the pressure differential under which the second sealing member 17 is preferably able to provide a sealing effect in this embodiment.

[0039] The strength of the frictional lock of the tubular element 3 relative to the connector joint 2 or relative to the fluid volume 100 can be limited relative to the pressure allowed by the fluid volume 100. If the pressure exceeds a certain threshold, the frictional force applied to the tubular element 2 by the clamping ring 9 may be lower than the pressure applied by the fluid, and therefore the tubular element 3 may be forced to disengage from the connector joint 2. The clamping force and thus the increase in frictional force are limited to avoid damaging the sealing member 17 or the tubular element 3.

[0040] This problem is mitigated by providing a component kit as described herein, which is designed to form a connector system 1 as further described herein and allows for the secure mounting of the probe 32 to the tubular element 3 or any other tubular element connected to the connector connector 2 via form-fit locking. Reference Figure 1 The component kit essentially comprises a tubular element 3, in which, in this exemplary embodiment, a replaceable instrument 32 in the form of a probe is mounted. Furthermore, the component kit includes a first clamping ring 7 and a second clamping ring 8. The first clamping ring 7 is constructed and sized to clamp onto and attach to the tubular element 3. The second clamping ring 8 includes a latch 10 attached thereto, the latch 10 being pivotable relative to the second clamping ring 8 about a pivot axis 15. The radially outer side of the latch 10 extends further from the pivot axis 15 than the radially inner side. In the illustrated embodiment, the end surface 13 at the end of the latch 10 is beveled. Therefore, the end surface 13 is an inclined contact surface disposed at the end of the latch 10. To form the connector system 1, the second clamping ring 8 is mounted to the connector connector 2 such that when the latch 10 is positioned such that its barbed hook 11 is located radially inner, the latch 10 extends beyond the free end of the connector connector 2. To connect the tubular element 3 to the connector joint 2, for example, by inserting a probe or a replaceable instrument 32 including a transducer 31 into the measuring device, the distal end of the tubular element 3 is inserted into the connector joint 2, such as... Figure 1 As shown. The tubular element 3 advances within the connector joint 2, causing the first clamping ring 7 to advance toward the end of the latch 10 until the first clamping ring 7 abuts against the inclined contact surface 13 of the latch 10. As the tubular element 3 advances further within the connector joint 2, the first clamping ring 7 advances along the inclined contact surface 13 of the latch 10, thereby forcing the end of the latch 10 to move radially outward. The tubular element 3 advances further within the connector joint 2 until the front surface of the first clamping ring 7, opposite to the distal end of the tubular element 3, passes over the barbs 12 of the latch 10. The end of the latch 10 returns radially inward to radially overlap with the first clamping ring 7, thereby achieving the desired form-fit locking. In some embodiments, the latch 10 is also equipped with a stop 21 that prevents the tubular element 3 from advancing even beyond a maximum depth defined by the position of the stop and the distal end face of the first clamping ring 7. Assuming that the latch 10 is preloaded radially inward, for example by a spring 16, in the embodiment described above, the end of the latch 10 will self-actuate radially inward. Subsequently, the tubular element 3 with the first clamping ring 7 attached can be retracted in the direction of disengagement from the connector joint 2 until the barbs 12 of the latch 10 are received in the groove 18 of the first clamping ring 7, the groove 18 being disposed in the front surface of the first clamping ring 7 opposite to the distal end of the tubular element 3.

[0041] Therefore, it provides, for example Figure 2 Component 1a is shown. The barbed hook 11 of the latch 10 provides a form-fit lock to prevent the tubular element or probe 3 from being removed from the connector joint 2. The barbs 12 of the latch 10 are received in the groove 18 of the first clamping ring 7. Thus, the end of the latch 10 forms a form-fit lock with the first clamping ring 7 in the radial direction, thereby preventing the form-fit lock used to prevent the tubular element 3 from being accidentally unlocked. The positive pressure within the fluid volume 100 helps to secure the latch, as it forces the edge formed between the groove 18 and the radially outer periphery of the first clamping ring 7 into the undercut formed between the axially extending body section of the latch 10 and the barbs 12 of the latch 10. In addition, the clamping ring 9 with a seal 17 can be locked to provide a seal between the tubular element 3 and the connector joint 2, as well as additional friction locking.

[0042] To remove probe 3 from connector 2, or more generally, to remove tubular element 3 from connector 2, tubular element 3 must first be advanced into connector 2 until the barbs 12 of latch 10 are removed from the groove 18 of first clamping ring 7, which is located in the front surface of first clamping ring 7 opposite to the distal end of tubular element 3. That is, tubular element 3 needs to overcome any positive pressure within fluid volume 100 before unlocking the form-fit lock between clamping ring 7 and latch 10. Therefore, when an operator intends to remove tubular element 3, they must be aware of and warned of any positive pressure within fluid volume 100, otherwise it may be impossible to advance tubular element 3 sufficiently to overcome this positive pressure to unlock the form-fit lock between clamping ring 7 and latch 10. The end of latch 10 is then pulled radially outward until the radially inner end of the barbed hook 11 of latch 10 is radially outer of first clamping ring 7. An operating knob 14 is located at the end of the latch 10 for manually pulling the end of the latch 10 radially outward against the restoring force of the spring 16. The pivot axis 15 of the latch 10 is located at least substantially at the end of the latch 10, such that, particularly when viewed from the end of the latch, the latch 10 does not have an actuating cantilever beyond the pivot axis 15. This prevents the latch 10 from accidentally unlocking by gripping motion. After the end of the latch 10 is pulled radially outward and the radially inner end of the barbed hook 11 of the latch 10 is radially outer of the first clamping ring 7, the tubular element 3 can retract and disengage from the connector joint 2. In an embodiment, the method may include releasing the third clamping ring 9 as a first step.

[0043] Figure 3A component kit for a second embodiment of the connector system is shown. Unlike the first embodiment, the latch 10 according to the second embodiment includes a limiting device 20 in the form of a radially inwardly projecting protrusion that acts on a corresponding surface provided by the second clamping ring 8. The limiting device 20 limits the range of motion of the latch 10 caused by the preload provided by the spring 16. This prevents the tubular element 3 from contacting the latch during insertion and ensures that only the first clamping ring 7 is used to push the barbed hook 11 radially outward as described above. This reduces wear on the tubular element 3 and helps maintain its smooth outer surface to ensure a seal. Figure 3 The relationship between the first clamping ring 7 and the stop 21, as well as the barbs 12 of the barbed hook 11, is also shown: the axial distance 22 between the proximal end face of the stop 21 and the distal end portion of the barbed hook 11 is greater than the axial extension dimension 70 of the first clamping ring 7. The distance 22 between the stop 21 and the hook 11 is preferably chosen such that (assuming normal operating conditions) before the first clamping ring 7 passes the stop 21 during its insertion movement, the latch 10 has sufficient time to move the barbs 12 to the same radial distance as the groove 18 of the first clamping ring 7. On the other hand, a smaller distance 22 is helpful to the user because it allows the user to precisely set the maximum insertion depth via the position of the first clamping ring 7, and also keeps the extension dimension of the latch 10 small. Generally, these requirements are well met when the distance 22 is less than twice or even less than 1.5 times the extension dimension 70. In the illustrated embodiment, for example, the distance 22 is approximately 1.2 times the extension dimension 70. The stop 21 prevents the user from striking the distal end of the tubular element or the replaceable instrument mounted on the tubular element against the opposing wall 101 of the receiving structure during insertion and retraction of the tubular element, wherein, as described above, the tubular element 3 needs to be inserted over the pressure of the fluid volume 100 in order to unlock the latch 10.

[0044] Figure 4 An exemplary embodiment of the first clamping ring 7 is shown. Since the first clamping ring 7 is intended to be mounted onto the tubular element 3, and the tubular element 3 is designed to be inserted into the connector joint 2, there are generally no obstructions on the tubular element 3 that would prevent the first clamping ring 7 from being mounted onto the tubular element by sliding. To allow frictional locking to be created by clamping, the shown first clamping ring 7 comprises two half-rings connected at one end to a flexible bearing. On the opposite side of the flexible bearing, they are provided with a common bore. A tensioning device, such as a threaded bolt and nut or a clamp, can be disposed in and tensioned in said bore to force the two half-rings together, thereby generating the required clamping force and thus creating frictional locking. The interior of the first clamping ring 7 may be coated or provided with inserts to increase the friction between the first clamping ring 7 and the tubular element 3.

[0045] Figure 5 An exemplary embodiment of the second clamping ring 8 is shown. Since the second clamping ring 8 is intended to be mounted onto a connector joint 2, which typically has a sealing structure or a main device (e.g., a third clamping ring 9) for attaching tubular elements thereto, mounting the second clamping ring 8 by sliding is generally not feasible or practical. Therefore, the second clamping ring 8 can be configured as two half-rings 8a and 8b. In the illustrated embodiment, one of the half-rings, 8a, includes a mounting structure for the latch 10. The mounting structure includes two axially extending parallel walls 8c having a common hole 8d. Preferably, the mounting structure for the latch also includes a guide for the spring 16 or a similar mounting structure for other devices to produce the desired preload. The guide for the spring 16 can be a suitably sized blind hole arranged at a central location between the two parallel walls 8c and axially below the common hole 8d. The common hole 8d is designed to receive the pivot axis 15 of the latch. The two semi-rings 8a and 8b are provided with holes on their respective contact surfaces into which a tensioning device similar to that described for the first clamping ring 7 can be inserted to pull the two semi-rings together, thereby generating the required clamping force and thus creating frictional locking. The interior of the second clamping ring 8 may be coated or provided with inserts to increase the friction between the second clamping ring 8 and the connector joint 2. The connector joint 2 may also be formed with a recess to receive the second clamping ring 8 in the recess, or have steps or structures to ensure a secure positional relationship between the second clamping ring 8 and the connector joint 2.

[0046] Figure 6 A connector system 1 and assembly 1a are shown mounted on the same receiving structure 101, which is surrounded by a wall 101. The wall 101 includes two ports 102 equipped with flanges 101. A connector connector 2 is mounted on the two flanges via a set of nozzles and a shut-off device, as discussed above. A second clamping ring 8 is mounted to the connector connector 2, and a latch 10 according to a second embodiment is mounted to the second clamping ring 8. A replaceable instrument 32 is mounted in the distal portion of the tubular element 3, and a first clamping ring 7 is present only near the proximal end of the tubular element 3. Figure 6 The left side shows the connector system in the measuring position, wherein the connector system is component 1a, wherein the barbed hook 11 locks in the groove of the first clamping ring 7. Figure 6On the right side, a similar connector system is in a maintenance position, in which the tubular element is pulled out of the fluid volume 100 to a certain extent, allowing the distal end of the tubular element 3 and the replaceable instrument 32 to be separated from the fluid volume 100 by a shut-off device. To position the connector system 1 in this position, from the measurement position, the tubular element 3 needs to be pushed slightly further into the fluid volume 100 against fluid pressure. This movement is limited by a stop 21 located at the latch 10, preventing the user from causing a collision with the wall 101. Once the tubular element 3 is inserted slightly further than in the measurement position, the latch can be released by pulling the latch radially away from the tubular element while simultaneously pulling it out. Once the proximal surface of the first clamping ring 7 is proximal to the distal end of the barbed hook, the user can release the latch 10: the latch 10 may contact the first clamping ring 7, but the limiting device 20 (if present) will prevent the latch 10 from colliding with the tubular element 3. Therefore, operation is particularly comfortable, intuitive, and safe.

[0047] While the subject matter of this disclosure has been explained with the aid of exemplary embodiments, it should be understood that these exemplary embodiments are in no way intended to limit the scope of the claimed invention. It should be understood that the claims cover embodiments not expressly shown or disclosed herein, and embodiments deviating from those disclosed in the exemplary modes of carrying out the teachings of this disclosure will still be covered by the claims.

[0048] List of reference numerals

[0049] 1 Connector System

[0050] Component 1a

[0051] 2 Connector Joint

[0052] 3. Tubular elements

[0053] 31 Transducer

[0054] 32 Replaceable instruments and probes

[0055] 4 nozzles

[0056] 5 nozzles

[0057] 6. Cut-off device

[0058] 7 (First) Clamping Ring

[0059] 70 Axial extension dimension of the first clamping ring

[0060] 8 (Second) Clamping ring

[0061] 8a, b The first and second half rings of the second clamping ring

[0062] 8c Parallel sidewalls of the second clamping ring

[0063] 8d hole

[0064] 9 (Third) Clamping ring

[0065] 10 latches

[0066] 11. Barbed hook

[0067] 12 barbs

[0068] 13. End surface, inclined contact surface

[0069] 14. Operation knob

[0070] 15 Pivot axis

[0071] 16 Springs

[0072] 17 Sealing components

[0073] 17a Second sealing component

[0074] 18 Grooves

[0075] 19. Fixing nut

[0076] 20. Protrusions on limiting devices and latches

[0077] 21 Stopping component

[0078] 22. Axial distance between the proximal end face of the stop and the farthest part of the barbed hook.

[0079] 100 fluid volume

[0080] 101 Wall, containment structure

[0081] 101a Flange

[0082] Port 102

Claims

1. A component kit configured for releasably coupling and securing a tubular element (3) to a connector joint (2), the component kit comprising the tubular element (3), a first clamping ring (7) configured to attach to the tubular element, a second clamping ring (8), and a latch (10) pivotally attached to the second clamping ring (8) at a pivot axis (15), the latch extending axially from the pivot axis to an end of the latch, wherein, The latch end is movable radially along the second clamping ring, wherein the latch end includes a barbed hook (11) and is arranged such that the barbed hook extends radially inward relative to the second clamping ring, and the barbs (12) extend axially toward the second clamping ring, thereby forming an undercut between the axially extending body section of the latch and the barbs. The first clamping ring (7) includes at least one groove (18) in its axial surface, the at least one groove (18) being adapted and configured to receive barbs (12), wherein the dimensions and construction of the edge formed between the at least one groove and the radial outer periphery of the first clamping ring are designed to be received in the undercut.

2. The component kit according to claim 1, wherein, The end of the latch (10) is preloaded radially inward.

3. The component kit according to claim 1 or 2, wherein, A spring (16) is provided to achieve preloading.

4. The component kit according to any one of the preceding claims, wherein, The pivot axis (15) of the latch is located at least substantially at the end of the latch, such that, particularly when viewed from the end of the latch, the latch does not have an actuation cantilever that extends beyond the pivot axis.

5. The component kit according to any one of the preceding claims, wherein, The end surface (13) at the end of the latch is oblique, wherein the radially outer side of the latch extends further than the radially inner side to provide an oblique contact surface.

6. The component kit according to any one of the preceding claims, wherein, The latch (10) includes a radially inwardly extending protruding stop (21), wherein the stop (21) is arranged between the pivot axis (15) and the barbed hook (11), and the axial distance (22) between the proximal end face of the stop (21) and the farthest portion of the barbed hook (11) is greater than the axial extension dimension (70) of the first clamping ring (7), preferably, the axial distance (22) is less than twice the axial extension dimension (70) of the first clamping ring (7), and most preferably, the axial distance (22) is less than 1.5 times the axial extension dimension (70) of the first clamping ring (7).

7. The component kit according to any one of the preceding claims, wherein, At least one of the clamping rings (7, 8), preferably at least the second clamping ring (8), and most preferably the first and second clamping rings (7, 8) comprise two separable half-rings (8a, 8b), enabling the kit to be mounted to existing connector joints and / or to existing tubular elements.

8. The component kit according to any one of the preceding claims, wherein, The tubular element (3) includes a mounting structure for mounting a replaceable instrument having a dedicated distal end to the distal end of the tubular element (3), wherein a first clamping ring (7) is mounted on the tubular element (3) such that at least one of the at least one groove (18) of the first clamping ring (7) is arranged on the proximal-facing front surface of the first clamping ring (7), and wherein the first clamping ring (7) is mounted at a non-zero distance from the dedicated distal end.

9. The component kit according to claim 8, wherein, The replaceable instrument is a probe and includes a transducer (31) configured to measure at least one physical property of a fluid located at the distal end of the replaceable instrument.

10. A connector system comprising a connector connector (2) and a component kit according to any one of the preceding claims, said connector connector having a free end, wherein, The tubular element is configured to engage with the connector connector (2) at the free end of the connector connector, wherein a second clamping ring (8) is mounted on the connector connector.

11. The connector system according to claim 10, wherein, The tubular element (3) is configured to be received within the connector joint (2), and wherein a third clamping ring (9) is provided at the free end of the connector joint, wherein the third clamping ring is configured to receive the tubular element (3) through the third clamping ring (9) and to lock the tubular element in a frictional manner by clamping.

12. The connector system according to claim 10 or 11, wherein, The connector joint (2) is fluidly connected to a containment structure (101) configured to contain fluid, wherein the containment structure particularly includes at least one of a vessel, container and fluid line, and / or wherein, in particular, a shut-off device (6) is fluidly disposed between the containment structure and the connector joint.

13. A component (1) comprising a connector system according to any one of claims 10 to 12, wherein, The distal end of the tubular element (3) is received inside the connector joint (2), and at least one of the at least one groove (18) adapted and configured to receive the barb (12) is provided in the front surface of the first clamping ring opposite to the distal end of the tubular element, wherein the barb (12) of the barbed hook (11) of the latch (10) is received in the groove (18) of the first clamping ring (7), the groove (18) being provided in the front surface of the first clamping ring opposite to the distal end of the tubular element.

14. A method for assembling the component (1) of claim 13 from a connector system according to any one of claims 10 to 12, wherein, The latch has the features according to claims 2 and 5, and the method includes: • Insert the distal end of the tubular element (3) into the connector joint (2), wherein at least one of the at least one groove (18) adapted and configured to receive the barb (12) is provided in the front surface of the first clamping ring (7) opposite to the distal end of the tubular element (3). • Advance the tubular element within the connector joint (2) so that the first clamping ring (7) moves toward the end of the latch (10). • Make the first clamping ring (7) abut against the inclined contact surface (13) of the latch, • To advance the tubular element (3) further within the connector joint (2), wherein the first clamping ring (7) advances along the inclined contact surface (13) of the latch (10), thereby forcing the end of the latch to move radially outward. • Advance the tubular element (3) further within the connector joint (2) until the front surface of the first clamping ring, away from the distal end of the tubular element, passes the barb of the latch, wherein the distal end of the latch returns radially inward and radially overlaps the first clamping ring. Preferably, the tubular element (2) with the first clamping ring (7) attached is retracted in the direction of disengagement from the connector joint (2) until the barb (12) of the latch (10) is received in the groove (18) of the first clamping ring, the groove (18) being disposed in the front surface of the first clamping ring opposite to the distal end of the tubular element.

15. A method for disassembling component (1) according to claim 13, comprising: • Push the tubular element (3) into the connector joint (2) until the barbs (12) of the latch (10) are removed from the groove (18) of the first clamping ring (7), the groove (18) being located in the front surface of the first clamping ring opposite the distal end of the tubular element (3). • Pull the end of the latch (10) radially outward until the radially inner end of the barbed hook (11) of the latch (10) is located radially outer of the first clamping ring (7), and • Retract the tubular element (3) at least partially from the connector joint (2).

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