Sensor change-out positioning and sealing device for a closed container and method of installation

Abstract

The application discloses a sensor replacement positioning and sealing device for a sealed container and a mounting method, which can realize sensor replacement, adjustment of relative position of a displacement sensor and a fuel assembly and sealing of sensor wires in a high-temperature and high-pressure environment, so that displacement response of the fuel assembly in a high-temperature fluid can be safely and accurately measured. The main technical scheme of the application is as follows: a sensor replacement positioning and sealing device for a sealed container, a measuring rod is used for connecting a sensor probe, wires of the sensor probe are connected to the measuring rod, a connecting pipe base is used for connecting with the container; the measuring rod is threadedly connected with the connecting pipe base, measuring rod sealing components are connected with the measuring rod and the connecting pipe base respectively, and are used for sealing of the measuring rod and the connecting pipe base; wire sealing components are connected with the measuring rod, and are used for connecting the wires and sealing of the measuring rod and the wires. The application is mainly used for sensor replacement, positioning, adjustment and sealing.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sensor installation and positioning, and particularly relates to a sensor replacement, positioning and sealing device for a sealed container and an installation method. BACKGROUND

[0002] During the operation of a reactor, the fuel assembly is long-term in a sealed high-temperature and high-pressure pressure vessel, and the coolant containing boron flows through the fuel assembly along the direction of the fuel rod, thereby causing the overall and local flow-induced vibration of the assembly, the vibration can cause the sliding friction and collision between the fuel rod and the grid, and finally can cause the fatigue wear and even damage of the fuel assembly, which can cause fuel leakage and serious consequences. Therefore, it is of great significance to understand and study the flow-induced vibration characteristics of the assembly in a high-temperature environment for the structural design of the fuel assembly, and the flow-induced vibration problem of the fuel assembly has always been concerned.

[0003] In order to study and evaluate the flow-induced vibration characteristics of the fuel assembly in the reactor, corresponding sensors need to be arranged in the flow-induced vibration test research of the fuel assembly to measure the fluid excitation and response of the assembly, and the displacement sensor is a commonly used sensor for measuring the vibration response of the assembly under fluid excitation, which can directly obtain the displacement response of the assembly under the action of fluid. Therefore, the installation, positioning, adjustment and sealing reliability of the displacement sensor in a high-temperature and high-pressure test environment is directly related to the safety of the test and the effectiveness of the data.

[0004] In the prior art, the displacement sensor probe is generally in the form of an external thread, and during installation, a sealing material is applied on the external thread of the sensor probe, and the probe is screwed into the threaded hole matched on the test cylinder to realize installation and sealing. However, the test cylinder will expand under high-temperature environment, which can cause the relative distance between the displacement sensor and the fuel assembly to exceed the range of the sensor, and thus the measurement cannot be performed. In the prior art, the position of the sensor cannot be adjusted after installation, which causes the sensor to be unable to effectively monitor the fuel assembly. SUMMARY

[0005] In view of this, the present application provides a sensor replacement, positioning and sealing device for a sealed container and an installation method.

[0006] To achieve the above purpose, the present application mainly provides the following technical solutions:

[0007] The present application provides a sensor replacement, positioning and sealing device for a sealed container, which comprises:

[0008] a measuring rod (200), a connecting pipe seat (300), a measuring rod sealing assembly (400) and a wire sealing assembly (500);

[0009] The measuring rod (200) is used for connecting the sensor probe (600), the lead wire (700) of the sensor probe (600) is threaded through the measuring rod (200), and the connector seat (300) is used for being connected with the container;

[0010] The measuring rod (200) is threadedly connected with the connector seat (300), the measuring rod sealing assembly (400) is connected with the measuring rod (200) and the connector seat (300) respectively, and is used for sealing between the measuring rod (200) and the connector seat (300), the lead wire sealing assembly (500) is connected with the measuring rod (200), and the lead wire sealing assembly (500) is used for connecting the lead wire (700), and is used for sealing between the measuring rod (200) and the lead wire (700).

[0011] The sleeve (100) is further included, the sleeve (100) is used for connecting the sensor probe (600), and the measuring rod (200) is connected with the sleeve (100);

[0012] The sleeve (100) is used for being sleeved on the outside of the sensor probe (600) and is threadedly connected with the sensor probe (600);

[0013] The measuring rod (200) is sleeved on the outside of the sleeve (100) and is threadedly connected with the sleeve (100).

[0014] The inner wall of the connector seat (300) is provided with the first boss (301), the first boss (301) and the opposite side of the measuring rod (200) are respectively provided with threads, the measuring rod (200) is threaded through the connector seat (300), and the measuring rod (200) is threadedly connected with the first boss (301).

[0015] The measuring rod sealing assembly (400) includes a first gasket assembly and a first locking nut (410), and the inner wall of the connector seat (300) is provided with a second boss (302);

[0016] The first gasket assembly is sleeved on the measuring rod (200) from the side of the second boss (302) away from the sleeve (100), and part is located between the second boss (302) and the measuring rod (200);

[0017] The first locking nut (410) is sleeved on the measuring rod (200) and is connected with the connector seat (300) from the side of the connector seat (300) away from the sleeve (100), and the first locking nut (410) is matched with the second boss (302) to extrude the first gasket assembly.

[0018] The first gasket assembly includes a first soft gasket (420), a second soft gasket (430) and a first compression gasket (440);

[0019] The first soft gasket (420), the second soft gasket (430) and the first compression gasket (440) are sleeved on the measuring rod (200) and abut against the outer wall of the measuring rod (200) and the inner wall of the connector seat (300), and are arranged in a direction away from the sleeve (100), the first soft gasket (420) is a T-shaped gasket, part of the structure of the first soft gasket (420) is located between the second boss (302) and the measuring rod (200), and the first locking nut (410) is used for extruding the first compression gasket (440).

[0020] The wire sealing assembly (500) comprises a second gasket assembly and a second locking nut (510), and the inner wall of the measuring rod (200) is provided with a third boss (201);

[0021] The second gasket assembly is sleeved on the wire (700) from the side of the third boss (201) away from the sleeve (100), and part of the structure is located between the third boss (201) and the wire (700);

[0022] The second locking nut (510) is sleeved on the wire (700) and connected to the measuring rod (200) from the side of the measuring rod (200) away from the sleeve (100), and the second locking nut (510) extrudes the second gasket assembly in cooperation with the third boss (201).

[0023] The second gasket assembly comprises a third soft gasket (520), a fourth soft gasket (530) and a second compression gasket (540);

[0024] The third soft gasket (520), the fourth soft gasket (530) and the second compression gasket (540) are all sleeved on the wire (700) and abut against the outer wall of the wire (700) and the inner wall of the measuring rod (200), and are arranged in a direction away from the sleeve (100), the third soft gasket (520) is a T-shaped gasket, part of the structure of the third soft gasket (520) is located between the third boss (201) and the wire (700), and the second locking nut (510) is used for extruding the second compression gasket (540).

[0025] The second gasket assembly further comprises a locking pin (550), the second compression gasket (540) is provided with a first limiting groove (541), the measuring rod (200) is provided with a second limiting groove, the first limiting groove (541) and the second limiting groove are opposite, and the locking pin (550) is located in the first limiting groove (541) and the second limiting groove, and is used for limiting the relative movement of the second compression gasket (540) and the measuring rod (200) in the circumferential direction.

[0026] The third soft gasket (520), the fourth soft gasket (530) and the second compression gasket (540) are all split gaskets, and the second gasket assembly further comprises a gasket cap (560) sleeved on the lead wire (700), the gasket cap (560) comprising a pressing surface (561) and a surrounding surface (562), the surrounding surface (562) being connected with the pressing surface (561) and surrounding the pressing surface, the surrounding surface (562) being perpendicular to the pressing surface (561), the pressing surface (561) being used for extruding an end surface of the second compression gasket (540) from a side of the second compression gasket (540) away from the sleeve (100), and the surrounding surface (562) being used for sleeving the second compression gasket (540) in a circumferential direction of the second compression gasket (540).

[0027] In another aspect, the application also provides a mounting method of the sensor refitting positioning and sealing device of the sealed container, the method comprising:

[0028] connecting the sensor probe (600) with the measuring rod (200) and passing the lead wire (700) of the sensor probe (600) through the measuring rod (200);

[0029] screw-threadedly connecting the measuring rod (200) with the connecting pipe seat (300) and screwing the measuring rod (200) to adjust the position of the detection end of the sensor probe (600) so that the distance between the measuring end and the measured member is within the range of the sensor range;

[0030] sleeving the measuring rod sealing assembly (400) on the measuring rod (200) and sealing the measuring rod (200) and the connecting pipe seat (300);

[0031] sleeving the lead wire sealing assembly (500) on the lead wire (700) and sealing the measuring rod (200) and the lead wire (700).

[0032] The sensor refitting positioning and sealing device and the mounting method of the sealed container provided by the application realize the measurement and monitoring of the vibration of the fuel assembly under the action of high-temperature fluid, obtain the flow-induced vibration response data of the fuel assembly by arranging the displacement sensor. The relative distance between the sensor and the fuel assembly is adjustable by screw-threadedly connecting the measuring rod with the connecting pipe seat arranged on the test container and adjusting the screw thread on the measuring rod, so that the position of the probe of the sensor can be adjusted according to the actual position after thermal expansion and cold contraction, the probe is ensured to be within the range, and the effective monitoring of the sensor on the fuel assembly is ensured. The measuring rod sealing assembly is used to realize the sealing between the measuring rod and the connecting pipe seat, and the lead wire sealing assembly is used to realize the sealing between the measuring rod and the lead wire, so that the high-temperature and high-pressure environment in the test container is ensured, and external disturbances are avoided. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1A structure schematic diagram of a sensor replacement positioning and sealing device for a sealed container provided by an embodiment of the present application;

[0034] Figure 2 A structure schematic diagram of a connector seat in a sensor replacement positioning and sealing device for a sealed container provided by an embodiment of the present application;

[0035] Figure 3 A structure schematic diagram of a first locking nut in a first view in a sensor replacement positioning and sealing device for a sealed container provided by an embodiment of the present application;

[0036] Figure 4 A structure schematic diagram of a first locking nut in a second view in a sensor replacement positioning and sealing device for a sealed container provided by an embodiment of the present application;

[0037] Figure 5 A structure schematic diagram of a third soft gasket in a first view in a sensor replacement positioning and sealing device for a sealed container provided by an embodiment of the present application;

[0038] Figure 6 A structure schematic diagram of a third soft gasket in a second view in a sensor replacement positioning and sealing device for a sealed container provided by an embodiment of the present application;

[0039] Figure 7 A structure schematic diagram of a second compression gasket in a first view in a sensor replacement positioning and sealing device for a sealed container provided by an embodiment of the present application;

[0040] Figure 8 A structure schematic diagram of a second compression gasket in a second view in a sensor replacement positioning and sealing device for a sealed container provided by an embodiment of the present application;

[0041] Figure 9 A structure schematic diagram of a gasket cap in a sensor replacement positioning and sealing device for a sealed container provided by an embodiment of the present application;

[0042] Figure 10 A flowchart of an installation method of a sensor replacement positioning and sealing device for a sealed container provided by an embodiment of the present application. DETAILED DESCRIPTION

[0043] To further explain the technical means and effects adopted by the present application to achieve the predetermined purposes, the specific embodiments, structures, features and effects of the sensor replacement positioning and sealing device for a sealed container according to the present application are described in detail as follows in combination with the drawings and preferred embodiments.

[0044] As Figure 1As shown, the sensor replacement positioning and sealing device for a sealed container provided by the embodiments of the present application comprises:

[0045] The measuring rod (200), the adapter seat (300), the measuring rod sealing assembly (400) and the wire sealing assembly (500);

[0046] The measuring rod (200) is used for connecting the sensor probe (600), the wire (700) of the sensor probe (600) is connected to the measuring rod (200), and the adapter seat (300) is used for connecting the container;

[0047] The measuring rod (200) is threadedly connected with the adapter seat (300), the measuring rod sealing assembly (400) is connected with the measuring rod (200) and the adapter seat (300) respectively, and is used for sealing between the measuring rod (200) and the adapter seat (300), the wire sealing assembly (500) is connected with the measuring rod (200), and the wire sealing assembly (500) is used for connecting the wire (700), and is used for sealing between the measuring rod (200) and the wire (700).

[0048] The sealed container is a cavity structure, and the cavity is used for containing at least a fuel assembly. The sealed container is used for providing a high-temperature and high-pressure environment for the test of the fuel assembly. The sensor can be a displacement sensor, specifically a non-contact displacement sensor, which comprises a sensor probe (600) and a display device, and the sensor probe is connected with the display device through a wire. The sensor probe (600) is located in the cavity of the sealed container, and a detection end of the sensor probe (600) is opposite to the fuel assembly, so as to obtain the flow-induced vibration response data of the fuel assembly in the test. Alternatively, in some embodiments, the sensor can also be a temperature sensor, a radiation sensor, etc., and the sensor probe (600) is a corresponding probe, which can be selected as required. The sensor probe (600) has an external thread.

[0049] The measuring rod (200) is a long cylindrical structure, and the measuring rod (200) can be directly connected with the sensor probe (600). Alternatively, in some embodiments, the device further comprises a sleeve (100), which is a relatively short cylindrical structure, and the sleeve (100) is used for connecting the sensor probe (600). The measuring rod (200) is connected with the sleeve (100), so as to indirectly fix the sensor probe (600) through the sleeve (100). The sleeve (100) can conveniently install different sensor probes (600), so that the measuring rod (200) can be adapted to various sensor probes (600).

[0050] The adapter seat (300) is a nearly cylindrical structure, and the adapter seat (300) is fixedly connected with the closed container, for example, can be welded or fixedly connected through a sealing material. The measuring rod (200) is inserted into the adapter seat (300) and is threadedly connected with the internal thread of the adapter seat (300), so that the position of the sensor probe (600) connected with the measuring rod (200) can be adjusted by screwing the measuring rod (200), and the fuel assembly is always within the range of the sensor probe (600).

[0051] The measuring rod sealing assembly (400) is used for sealing at least between the measuring rod (200) and the adapter seat (300) and fixing the position of the measuring rod (200). One end of the lead wire (700) is connected with the sensor probe (600) in the closed container, and the other end is led out of the closed container through the measuring rod (200) and is connected with a display device. The lead wire sealing assembly (500) is used for sealing at least between the measuring rod (200) and the lead wire (700) and fixing the position of the lead wire (700). The specific implementation of the measuring rod sealing assembly (400) and the lead wire sealing assembly (500) will be described in detail in the embodiments below. The measuring rod sealing assembly (400) and the lead wire sealing assembly (500) work together to ensure the sealing of the device and the reliability of the test results.

[0052] The sensor replacement positioning and sealing device for the closed container and the installation method provided in the embodiments of the present application realize the measurement and monitoring of the vibration of the fuel assembly under the action of the high-temperature fluid by arranging the displacement sensor, and obtain the flow-induced vibration response data of the fuel assembly. The relative distance between the sensor and the fuel assembly is adjusted by the threaded adjustment of the measuring rod, so that the position of the probe of the sensor can be adjusted according to the actual position after thermal expansion and cold contraction, the probe is ensured to be within the range, and the effective monitoring of the sensor on the fuel assembly is ensured. The sealing between the measuring rod and the adapter seat is realized through the measuring rod sealing assembly, and the sealing between the measuring rod and the lead wire is realized through the lead wire sealing assembly, so as to ensure the high-temperature and high-pressure environment in the test container and avoid external disturbances.

[0053] The device realizes the replacement of the displacement sensor, the adjustment of the relative position between the displacement sensor and the measured member, that is, the fuel assembly, and the sealing of the sensor lead wire under the high-temperature and high-pressure environment, and can also solve the problem that the distance between the sensor and the measured member exceeds the measurement range of the sensor due to high-temperature and high-pressure thermal expansion, so that the displacement response of the fuel assembly under the high-temperature fluid can be safely and accurately measured. The installation and disassembly of the present application will not affect the structure of the device and the sensor, and the device is detachable, so that the replacement and reuse of the sensor can be realized.

[0054] In one embodiment, the sleeve (100) is sleeved outside the sensor probe (600) and is screwed with the sensor probe (600). The measuring rod (200) is sleeved outside the sleeve (100) and is screwed with the sleeve (100).

[0055] The sleeve (100) is an inner and outer threaded adapter sleeve. The sensor probe (600) is installed and removed through the sleeve (100), which does not affect the structure of the sensor probe (600). The sleeve (100) matched with the sensor probe (600) can be processed for any size of sensor probe (600), and the outer diameter of the sleeve (100) is matched with the measuring rod (200), which can be installed on the measuring rod (200).

[0056] In one embodiment, as shown in Figure 2 The inner wall of the adapter seat (300) is provided with a first boss (301), and the first boss (301) and the opposite side of the measuring rod (200) are respectively provided with threads. The measuring rod (200) is inserted into the adapter seat (300), and the measuring rod (200) is screwed with the first boss (301).

[0057] The first boss (301) is a ring-shaped boss protruding on the inner wall of the adapter seat (300). The first boss (301) is provided with threads opposite to the surface of the measuring rod (200), and the outer side wall of the measuring rod (200) is provided with threads. The first boss (301) is provided to realize threaded connection and provide installation space for the measuring rod sealing assembly (400).

[0058] In one embodiment, the measuring rod sealing assembly (400) includes a first gasket assembly and a first locking nut (410), and the inner wall of the adapter seat (300) is provided with a second boss (302). The first gasket assembly is sleeved on the measuring rod (200) from the side of the second boss (302) away from the sleeve (100), and part of it is located between the second boss (302) and the measuring rod (200). The first locking nut (410) is sleeved on the measuring rod (200) and connected with the adapter seat (300) from the side of the adapter seat (300) away from the sleeve (100). The first locking nut (410) cooperates with the second boss (302) to extrude the first gasket assembly.

[0059] As shown in Figure 2 The second boss (302) is a ring-shaped boss opened on the side of the first boss (301) away from the sleeve (100), and the second boss (302) extends to the first boss (301). The first gasket assembly and the first locking nut (410) are both ring-shaped parts, which can be sleeved on the outer periphery of the measuring rod (200). As shown in Figures 3-4The first locking nut (410) is provided with a first through hole (411), and the first locking nut (410) is sleeved on the outer periphery of the measuring rod (200) through the first through hole (411). The first locking nut (410) comprises an internal thread, and the outer wall of the adapter base (300) away from the sleeve (100) is provided with an external thread. The first locking nut (410) is screwed with the adapter base (300) in a buckling manner, and then cooperates with the second boss (302) to compress the first gasket assembly from the opposite sides of the first gasket assembly.

[0060] In an embodiment, the first gasket assembly comprises a first soft gasket (420), a second soft gasket (430) and a first compression gasket (440). The first soft gasket (420), the second soft gasket (430) and the first compression gasket (440) are all sleeved on the measuring rod (200) and abut against the outer wall of the measuring rod (200) and the inner wall of the adapter base (300). The first soft gasket (420), the second soft gasket (430) and the first compression gasket (440) are arranged in a direction away from the sleeve (100). The first soft gasket (420) is a T-shaped gasket, and part of the structure of the first soft gasket (420) is located between the second boss (302) and the measuring rod (200). The first locking nut (410) is used to extrude the first compression gasket (440).

[0061] The first soft gasket (420), the second soft gasket (430) and the first compression gasket (440) are all annular gaskets. The first soft gasket (420) and the second soft gasket (430) are both flexible gaskets, which can be made of rubber material. The smaller outer diameter end of the first soft gasket (420) is pressed into the space between the second boss (302) and the measuring rod (200). The first compression gasket (440) is a metal gasket. After the first locking nut (410) is tightened, the first soft gasket (420) and the second soft gasket (430) are extruded outward, thereby realizing the sealing of the measuring rod (200).

[0062] In an embodiment, the wire sealing assembly (500) comprises a second gasket assembly and a second locking nut (510), and the inner wall of the measuring rod (200) is provided with a third boss (201). The second gasket assembly is sleeved on the wire (700) away from the sleeve (100) on one side of the third boss (201), and part of the second gasket assembly is located between the third boss (201) and the wire (700). The second locking nut (510) is sleeved on the wire (700) and connected to the measuring rod (200) away from the sleeve (100) on one side of the measuring rod (200). The second locking nut (510) cooperates with the third boss (201) to extrude the second gasket assembly.

[0063] As Figure 2As shown, the third boss (201) is an annular boss arranged on the measuring rod (200) away from the sleeve (100). The second gasket assembly and the second locking nut (510) are both annular members, which can be sleeved on the outer periphery of the wire (700). The second locking nut (510) is similar in structure to the first locking nut (410), the wire (700) passes through the opening of the second locking nut (510), the second locking nut (510) includes an internal thread, the outer wall of the measuring rod (200) away from the sleeve (100) is provided with an external thread, the second locking nut (510) is screwed with the measuring rod (200) in a buckling manner, and then cooperates with the third boss (201) to compress the second gasket assembly from opposite sides of the second gasket assembly.

[0064] In an embodiment, the second gasket assembly includes a third soft gasket (520), a fourth soft gasket (530), and a second compression gasket (540). The third soft gasket (520), the fourth soft gasket (530), and the second compression gasket (540) are all sleeved on the wire (700) and abut against the outer wall of the wire (700) and the inner wall of the measuring rod (200), and are arranged away from the sleeve (100) in the direction, as shown in Figures 5-6 As shown, the third soft gasket (520) is a T-shaped gasket, and part of the structure of the third soft gasket (520) is located between the third boss (201) and the wire (700). The second locking nut (510) is used to press the second compression gasket (540).

[0065] The third soft gasket (520), the fourth soft gasket (530), and the second compression gasket (540) are all annular gaskets. The third soft gasket (520) and the fourth soft gasket (530) are flexible gaskets, which can be made of rubber, for example. The smaller-diameter end of the third soft gasket (520) is pressed into the space between the third boss (201) and the wire (700). The second compression gasket (540) is a metal gasket. After the second locking nut (510) is tightened, the third soft gasket (520) and the fourth soft gasket (530) are extruded outward, thereby achieving sealing of the wire (700).

[0066] In an embodiment, the second gasket assembly further includes a stop pin (550), as shown in Figures 7-8 As shown, the second compression gasket (540) is provided with a first limiting groove (541), and the measuring rod (200) is provided with a second limiting groove. The first limiting groove (541) and the second limiting groove are opposite, and the stop pin (550) is located in the first limiting groove (541) and the second limiting groove, which is used to limit the relative movement of the second compression gasket (540) and the measuring rod (200) in the circumferential direction.

[0067] The first limiting groove (541) and the second limiting groove can be strip-shaped grooves extending in the extension direction of the conductor (700) and have a semi-circular cross-section. The brake pin (550) is a cylindrical pin. The brake pin (550) can be used to position the circumferential position of the second clamping washer (540) and the measuring rod (200) to prevent relative rotation between the measuring rod (200) and the second clamping washer (540) during installation, which could cause the conductor (700) to break under tension.

[0068] In one embodiment, the third soft washer (520), the fourth soft washer (530), and the second compression washer (540) are all split washers, such as... Figure 9 As shown, the second washer assembly further includes: a washer cap (560), which is sleeved on the wire (700). The washer cap (560) includes a pressure surface (561) and a surrounding surface (562). The surrounding surface (562) is connected to the pressure surface (561) and surrounds the pressure surface. The surrounding surface (562) is perpendicular to the pressure surface (561). The pressure surface (561) is used to press the end face of the second compression washer (540) from the side of the second compression washer (540) away from the sleeve (100). The surrounding surface (562) is used to sleeve the second compression washer (540) circumferentially.

[0069] A split washer refers to a washer that has been cut along its axial direction, resulting in the washer being separated into two parts along a plane formed by its diameter and axis. For example, for the third soft washer (520), such as... Figure 6 As shown, the plane formed by radial A and axial directions is divided into two parts, and the first central opening (521) of the third soft washer (520) becomes two selectively openable openings. For the second compression washer (540), as... Figure 8 As shown, the plane formed by radial B and axial directions is divided into two parts, and the second center opening (542) of the second clamping washer (540) becomes two selectively openable openings. The fourth soft washer (530) is similar and will not be described in detail. During installation, the two halves of the split washer can be used to clamp the sensor wire (700) to achieve installation. The washer cap (560) is used to prevent the split second clamping washer (540) from loosening and failing to clamp the wire (700), and to ensure that the second clamping washer (540) is evenly stressed when the second locking nut (510) is tightened for sealing, thereby improving the sealing effect.

[0070] On the other hand, such as Figure 10 As shown, this application also provides a method for installing a sensor replacement positioning sealing device in a sealed container, the method comprising:

[0071] S1. Connect the sensor probe (600) to the measuring rod (200) and pass the wire (700) of the sensor probe (600) through the measuring rod (200).

[0072] In the embodiment including the sleeve (100), the displacement sensor probe (600) is screwed through the external thread of the sleeve (100) into the internal thread of the end of the measuring rod (200) to which the sleeve (100) is fitted, and the lead wire (700) of the sensor is led out from the internal through hole of the measuring rod (200).

[0073] S2, the measuring rod (200) is threadedly connected with the nozzle seat (300), and the measuring rod (200) is screwed to adjust the position of the detection end of the sensor probe (600), so that the distance between the measuring end and the measured member is within the range of the sensor range.

[0074] The measuring rod (200) provided with the sensor probe (600) is inserted into the nozzle seat (300) welded on the container, and the thread on the measuring rod (200) is screwed into the sealing thread in the nozzle seat (300) to be fitted and fixed. Then, the depth of the measuring rod (200) screwed into the nozzle seat (300) is adjusted, and the voltage value of the displacement sensor is measured synchronously to determine the measurement zero position of the displacement sensor, so as to ensure that the distance between the sensor probe (600) and the measured member, i.e. the fuel assembly, is within the range of the sensor range.

[0075] S3, the measuring rod sealing assembly (400) is sleeved on the measuring rod (200), and the measuring rod (200) and the nozzle seat (300) are sealed.

[0076] The first soft gasket (420) is sleeved on the measuring rod (200) and pressed into the through hole of the second boss (302) in the nozzle seat (300), and then the second soft gasket (430) and the first compression gasket (440) are pressed. Then, the first locking nut (410) is tightened to drive the second gasket assembly to realize the sealing of the measuring rod (200).

[0077] S4, the lead wire sealing assembly (500) is sleeved on the lead wire (700), and the measuring rod (200) and the lead wire (700) are sealed.

[0078] The Figure 5 - the third soft gasket (520) in FIG. 6 is halved, Figure 1 The fourth soft gasket (530) in FIG. 6 clamps the lead wire (700) of the sensor and presses the third soft gasket (520) into the through hole of the third boss (201) in the measuring rod (200). The Figures 7-8 The second compression gasket (540) in FIG. 6 clamps the lead wire (700) of the sensor and pushes the third soft gasket (520) into the through hole of the third boss (201) in the measuring rod (200). Figure 1The fourth soft gasket (530) is rotated, and the second compression gasket (540) is rotated, so that the first limiting groove (541) is aligned with the second limiting groove on the measuring rod (200). The brake pin (550) is inserted into the first limiting groove (541) and the second limiting groove, so that the measuring rod (200) is prevented from rotating relative to the second compression gasket (540) and the lead wire (700) is clamped. The gasket cap (560) in the fourth soft gasket (530) is sleeved on the second compression gasket (540), so that the second compression gasket (540) is prevented from being loosened and unable to clamp the lead wire (700) when the second compression gasket (540) is half-split, and the second locking nut (510) is tightened to press and seal, the second compression gasket (540) is uniformly stressed, and the sealing effect is improved. Finally, the second locking nut (510) is tightened, and the second gasket assembly is driven to realize sealing of the sensor lead wire (700). Figure 9 Figure 3

[0079] When adjustment of the position of the sensor probe (600) is required, only the measuring rod (200) needs to be rotated, so that the position of the sensor probe (600) is conveniently adjusted, and the container is always sealed during the process.

[0080] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.​​

Claims

1. A sensor change-out positioning and sealing device for a closed container, characterized by, Comprise: a measuring rod (200), a pipe connector base (300), a measuring rod sealing assembly (400) and a wire sealing assembly (500); the measuring rod (200) is used for connecting a sensor probe (600), a wire (700) of the sensor probe (600) is connected to the measuring rod (200), and the pipe connector base (300) is used for connecting a container; the measuring rod (200) is threadedly connected with the pipe connector base (300), the measuring rod sealing assembly (400) is respectively connected with the measuring rod (200) and the pipe connector base (300) for sealing between the measuring rod (200) and the pipe connector base (300), the wire sealing assembly (500) is connected with the measuring rod (200), and the wire sealing assembly (500) is used for connecting the wire (700) for sealing between the measuring rod (200) and the wire (700); an inner wall of the pipe connector base (300) is provided with a first boss (301), the first boss (301) and an opposite side of the measuring rod (200) are respectively provided with threads, the measuring rod (200) is connected to the pipe connector base (300), and the measuring rod (200) is threadedly connected with the first boss (301); the measuring rod sealing assembly (400) comprises a first gasket assembly and a first locking nut (410), and an inner wall of the pipe connector base (300) is provided with a second boss (302); the first gasket assembly is sleeved on the measuring rod (200) from a side of the second boss (302) away from the sensor probe (600), and part of the first gasket assembly is located between the second boss (302) and the measuring rod (200); the first locking nut (410) is sleeved on the measuring rod (200), and is connected with the pipe connector base (300) from a side of the pipe connector base (300) away from the sensor probe (600), and the first locking nut (410) is matched with the second boss (302) to extrude the first gasket assembly.

2. The sensor change-out, position and seal apparatus for a closed container of claim 1, wherein, Further comprise: a sleeve (100), the sleeve (100) is used for connecting the sensor probe (600), and the measuring rod (200) is connected with the sleeve (100); the sleeve (100) is used for sleeving an outside of the sensor probe (600), and is threadedly connected with the sensor probe (600); the measuring rod (200) is sleeved on an outside of the sleeve (100), and is threadedly connected with the sleeve (100).

3. The sensor replacement positioning and sealing device for a sealed container according to claim 1, wherein the first gasket assembly comprises a first soft gasket (420), a second soft gasket (430) and a first compression gasket (440). The first soft gasket (420), the second soft gasket (430) and the first compression gasket (440) are sleeved on the measuring rod (200) and abut against the outer wall of the measuring rod (200) and the inner wall of the adapter seat (300), the first soft gasket (420), the second soft gasket (430) and the first compression gasket (440) are arranged in a direction away from the sensor probe (600), the first soft gasket (420) is a T-shaped gasket, part of the structure of the first soft gasket (420) is located between the second boss (302) and the measuring rod (200), and the first locking nut (410) is used for extruding the first compression gasket (440).

4. The sensor refitting positioning and sealing device for a sealed container according to claim 1, characterized in that, The wire sealing assembly (500) comprises a second gasket assembly and a second locking nut (510), and the inner wall of the measuring rod (200) is provided with a third boss (201); The second gasket assembly is sleeved on the wire (700) from the side of the third boss (201) away from the sensor probe (600), and part of the structure is located between the third boss (201) and the wire (700); The second locking nut (510) is sleeved on the wire (700) and connected to the measuring rod (200) from the side of the measuring rod (200) away from the sensor probe (600), and the second locking nut (510) extrudes the second gasket assembly in cooperation with the third boss (201).

5. The sensor refitting positioning and sealing device for a sealed container according to claim 4, characterized in that, The second gasket assembly comprises a third soft gasket (520), a fourth soft gasket (530) and a second compression gasket (540); The third soft gasket (520), the fourth soft gasket (530) and the second compression gasket (540) are sleeved on the wire (700) and abut against the outer wall of the wire (700) and the inner wall of the measuring rod (200), the third soft gasket (520), the fourth soft gasket (530) and the second compression gasket (540) are arranged in a direction away from the sensor probe (600), the third soft gasket (520) is a T-shaped gasket, part of the structure of the third soft gasket (520) is located between the third boss (201) and the wire (700), and the second locking nut (510) is used for extruding the second compression gasket (540).

6. The sensor refitting positioning and sealing device for a sealed container according to claim 5, characterized in that, The second gasket assembly further comprises a brake pin (550), the second compression gasket (540) is provided with a first limiting groove (541), the measuring rod (200) is provided with a second limiting groove, the first limiting groove (541) and the second limiting groove are opposite, and the brake pin (550) is located in the first limiting groove (541) and the second limiting groove, and is used for limiting the circumferential relative movement of the second compression gasket (540) and the measuring rod (200).

7. The sensor change-out positioning and sealing device for a closed container of any one of claims 5, wherein, The third soft gasket (520), the fourth soft gasket (530) and the second compression gasket (540) are all split gaskets, and the second gasket assembly further comprises a gasket cap (560), the gasket cap (560) is sleeved on the lead wire (700), the gasket cap (560) comprises a pressing surface (561) and a surrounding surface (562), the surrounding surface (562) is connected with the pressing surface (561) and surrounds the pressing surface (561) in a circle, the surrounding surface (562) is perpendicular to the pressing surface (561), the pressing surface (561) is used for extruding the end surface of the second compression gasket (540) from the side of the second compression gasket (540) away from the sensor probe (600), and the surrounding surface (562) is used for sleeving the second compression gasket (540) in the circumferential direction of the second compression gasket (540).

8. A method of installing a sensor change-out positioning and sealing device for a closed container, the method comprising: The method for the sensor change-out positioning and sealing device for a closed container as claimed in any one of claims 1-7, the method comprises: connecting a sensor probe (600) with a measuring rod (200), and passing a lead wire (700) of the sensor probe (600) through the measuring rod (200); screw connecting the measuring rod (200) with a connector seat (300), and screwing the measuring rod (200) to adjust the position of a detection end of the sensor probe (600), so that the distance between the detection end and a measured member is within the sensor range; sleeving the measuring rod sealing assembly (400) on the measuring rod (200), and sealing the measuring rod (200) and the connector seat (300); sleeving the lead wire sealing assembly (500) on the lead wire (700), and sealing the measuring rod (200) and the lead wire (700).

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