Sensor reloading, positioning and sealing device for closed container and mounting method of sensor reloading, positioning and sealing device

Abstract

The invention discloses a sensor reloading, positioning and sealing device for a closed container and an installation method, which can realize the reloading of a displacement sensor, the adjustment of the relative position of the displacement sensor and a fuel assembly and the sealing of a sensor wire in a high-temperature and high-pressure environment. Therefore, the displacement response of the fuel assembly under the high-temperature fluid can be safely and accurately measured. According to the main technical scheme, a measuring rod is used for being connected with a sensor probe, a wire of the sensor probe is connected to the measuring rod in a penetrating mode, and a pipe connecting base is used for being connected with the container; the measuring rod is in threaded connection with the pipe connecting seat, the measuring rod sealing assembly is connected with the measuring rod and the pipe connecting seat and used for sealing the measuring rod and the pipe connecting seat, and the wire sealing assembly is connected with the measuring rod and used for connecting a wire and sealing the measuring rod and the wire. The device is mainly used for reloading, positioning, adjusting and sealing of the sensor.

Description

Technical Field

[0001] The present invention relates to the technical field of sensor installation and positioning, and in particular to a sensor replacement positioning sealing device for a closed container and an installation method thereof. Background Art

[0002] During the operation of the reactor, the fuel assembly is in a closed high-temperature and high-pressure pressure vessel for a long time. The boron-containing coolant will flow through the fuel assembly along the direction of the fuel rods, causing the assembly to experience overall and local flow-induced vibrations. The vibration will cause sliding friction and collision between the fuel rods and the grid, which may eventually cause fatigue wear or even damage to the fuel assembly, which may cause fuel leakage and have serious consequences. Therefore, understanding and studying the flow-induced vibration characteristics of the assembly in a high-temperature environment is of great significance to the structural design of the fuel assembly, and the flow-induced vibration problem of the fuel assembly has also been a focus of attention.

[0003] In order to study and evaluate the flow-induced vibration characteristics of fuel assemblies in reactors, it is necessary to arrange corresponding sensors in the flow-induced vibration test of fuel assemblies to measure the fluid excitation and response of the assemblies. Displacement sensors are commonly used sensors to measure the vibration response of assemblies under fluid excitation, and can directly obtain the displacement response of assemblies under the action of fluid. Therefore, the installation, positioning, adjustability and sealing reliability of displacement sensors in high temperature and high pressure test environments are directly related to the safety of the test and the validity of the data.

[0004] In the prior art, the displacement sensor probe is generally in the form of an external thread. During installation, a sealing material is applied to the external thread of the sensor probe, and the probe is screwed into the threaded hole provided on the test cylinder to achieve installation and sealing. However, in a high temperature environment, the test cylinder will undergo thermal expansion, which may cause the relative distance between the displacement sensor and the fuel assembly to exceed the sensor's range, resulting in an inability to measure. In the prior art, the position of the sensor cannot be adjusted after installation, resulting in the sensor being unable to effectively monitor the fuel assembly. Summary of the invention

[0005] In view of this, in order to solve at least one of the above-mentioned technical problems, the present invention provides a sensor replacement positioning sealing device and an installation method for a closed container.

[0006] In order to achieve the above object, the present invention mainly provides the following technical solutions:

[0007] The present invention provides a sensor replacement positioning and sealing device for a closed container, comprising:

[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 to connect to the sensor probe (600), the wire (700) of the sensor probe (600) is connected to the measuring rod (200), and the connecting socket (300) is used to connect to the container;

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

[0011] The device further comprises a sleeve (100), wherein the sleeve (100) is used to connect the sensor probe (600), and the measuring rod (200) is connected to the sleeve (100);

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

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

[0014] The inner wall of the connecting pipe 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 connected to the connecting pipe seat (300), and the measuring rod (200) is threadedly connected to the first boss (301).

[0015] The measuring rod sealing assembly (400) comprises a first washer assembly and a first locking nut (410), and the inner wall of the pipe socket (300) is provided with a second boss (302);

[0016] The first washer assembly is sleeved on the measuring rod (200) from the side of the second boss (302) away from the sleeve (100), and is partially 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 connected to the connecting pipe seat (300) from a side of the connecting pipe seat (300) away from the sleeve (100). The first locking nut (410) cooperates with the second boss (302) to squeeze the first washer assembly.

[0018] Wherein, the first gasket assembly comprises a first soft gasket (420), a second soft gasket (430) and a first compression gasket (440);

[0019] The first soft washer (420), the second soft washer (430) and the first compression washer (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 connecting pipe seat (300). The first soft washer (420), the second soft washer (430) and the first compression washer (440) are arranged in a direction away from the sleeve (100). The first soft washer (420) is a T-shaped washer. Part of the structure of the first soft washer (420) is located between the second boss (302) and the measuring rod (200). The first locking nut (410) is used to squeeze the first compression washer (440).

[0020] The wire sealing assembly (500) comprises a second washer 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 washer assembly is sleeved on the wire (700) from the side of the third boss (201) away from the sleeve (100), and is partially 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). The second locking nut (510) cooperates with the third boss (201) to squeeze the second washer assembly.

[0023] Wherein, 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 washer (520), the fourth soft washer (530) and the second compression washer (540) are all sleeved on the conductor (700) and abut against the outer wall of the conductor (700) and the inner wall of the measuring rod (200). The third soft washer (520), the fourth soft washer (530) and the second compression washer (540) are arranged in a direction away from the sleeve (100). The third soft washer (520) is a T-shaped washer. Part of the structure of the third soft washer (520) is located between the third boss (201) and the conductor (700). The second locking nut (510) is used to squeeze the second compression washer (540).

[0025] Among them, the second washer assembly also includes: a brake pin (550), a first limiting groove (541) is arranged on the second clamping washer (540), a second limiting groove is opened on the measuring rod (200), the first limiting groove (541) and the second limiting groove are opposite to each other, and the brake pin (550) is located in the first limiting groove (541) and the second limiting groove, and is used to limit the relative movement of the second clamping washer (540) and the measuring rod (200) in the circumferential direction.

[0026] Among them, 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 also includes: a gasket cap (560), the gasket cap (560) is sleeved on the wire (700), the gasket cap (560) includes a pressing surface (561) and a surrounding surface (562), the surrounding surface (562) is connected to the pressing surface (561) and surrounds the pressing surface, the surrounding surface (562) is perpendicular to the pressing surface (561), the pressing surface (561) is used to squeeze the end surface of the second compression gasket (540) from the side of the second compression gasket (540) away from the sleeve (100), and the surrounding surface (562) is used to sleeve the second compression gasket (540) in the circumferential direction of the second compression gasket (540).

[0027] On the other hand, the present application also provides a method for installing a sensor replacement positioning sealing device of a closed container, the method comprising:

[0028] Connecting the sensor probe (600) to the measuring rod (200), and passing the wire (700) of the sensor probe (600) through the measuring rod (200);

[0029] The measuring rod (200) is threadably connected to the connecting pipe 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 object is within the sensor range;

[0030] The measuring rod sealing assembly (400) is sleeved on the measuring rod (200) to seal the measuring rod (200) and the connecting pipe seat (300);

[0031] The wire sealing assembly (500) is sleeved on the wire (700) to seal the measuring rod (200) and the wire (700).

[0032] The present invention proposes a sensor replacement positioning sealing device and installation method for a closed container. By setting a displacement sensor, the vibration of the fuel assembly under the action of high-temperature fluid can be measured and monitored to obtain the flow-induced vibration response data of the fuel assembly. The relative distance between the sensor and the fuel assembly can be adjusted by threading the measuring rod with the connecting pipe seat installed in the test container, and the thread on the measuring rod is adjusted to ensure that the position of the sensor probe can be adjusted according to the actual position after thermal expansion and contraction, and the probe is within the measuring range, ensuring that the sensor effectively monitors the fuel assembly. The sealing between the measuring rod and the connecting pipe seat is achieved by the measuring rod sealing assembly, and the sealing between the measuring rod and the wire is achieved by the wire sealing assembly, thereby ensuring the high temperature and high pressure environment in the test container to avoid external disturbances. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0035] Figure 3 A schematic structural diagram of a first locking nut in a sensor replacement positioning and sealing device for a sealed container provided by an embodiment of the present invention at a first viewing angle;

[0036] Figure 4 A schematic structural diagram of a first locking nut in a sensor replacement positioning and sealing device for a sealed container provided by an embodiment of the present invention at a second viewing angle;

[0037] Figure 5 A schematic structural diagram of a third soft gasket in a sensor replacement positioning and sealing device for a sealed container provided by an embodiment of the present invention at a first viewing angle;

[0038] Figure 6 A schematic structural diagram of a third soft gasket in a sensor replacement positioning and sealing device for a sealed container provided by an embodiment of the present invention at a second viewing angle;

[0039] Figure 7 A schematic structural diagram of a second compression gasket in a sensor replacement positioning and sealing device for a sealed container provided by an embodiment of the present invention at a first viewing angle;

[0040] Figure 8 A schematic structural diagram of a second compression gasket in a sensor replacement positioning and sealing device for a sealed container provided by an embodiment of the present invention at a second viewing angle;

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

[0042] Fig.10 A flow chart of an installation method for a sensor replacement positioning and sealing device for a sealed container provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0043] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, the specific implementation method, structure, characteristics and effects of the sensor replacement positioning sealing device for a closed container proposed by the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0044] like Figure 1As shown, an embodiment of the present invention provides a sensor replacement positioning and sealing device for a closed container, comprising:

[0045] A measuring rod (200), a connecting pipe seat (300), a measuring rod sealing assembly (400) and a wire sealing assembly (500);

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

[0047] The measuring rod (200) is threadedly connected to the connecting pipe seat (300); the measuring rod sealing assembly (400) is respectively connected to the measuring rod (200) and the connecting pipe seat (300) and is used for sealing between the measuring rod (200) and the connecting pipe seat (300); the wire sealing assembly (500) is connected to the measuring rod (200), and the wire sealing assembly (500) is used to connect 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 to accommodate at least the fuel assembly. The sealed container is used to provide 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, including a sensor probe (600) and a display device, and the sensor probe and the display device are connected by a wire. The sensor probe (600) is located in the cavity of the sealed container, and the detection end of the sensor probe (600) is opposite to the fuel assembly, and then the flow-induced vibration response data of the fuel assembly is obtained 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 needed. 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 to the sensor probe (600), or, in some embodiments, the device further comprises a sleeve (100), and the sleeve (100) is a shorter cylindrical structure, and the sleeve (100) is used to connect the sensor probe (600), and the measuring rod (200) is connected to the sleeve (100), and then the sensor probe (600) is indirectly fixed through the sleeve (100). The sleeve (100) can conveniently install different sensor probes (600), so that the measuring rod (200) can be adapted to a variety of sensor probes (600).

[0050] The take-up socket (300) is a cylindrical structure. The take-up socket (300) is fixedly connected to the sealed container, such as by welding or by a sealing material. The measuring rod (200) is connected to the take-up socket (300) and is threadedly connected to the internal thread of the take-up socket (300). Then, by screwing the measuring rod (200), the position of the sensor probe (600) connected to the measuring rod (200) can be adjusted, so that the fuel assembly is always within the measuring range of the sensor probe (600).

[0051] The measuring rod sealing assembly (400) is used to seal at least between the measuring rod (200) and the connecting pipe seat (300), and to fix the position of the measuring rod (200). One end of the wire (700) is connected to the sensor probe (600) in the sealed container, and the other end passes through the measuring rod (200) to lead out of the sealed container and is connected to the display device. The wire sealing assembly (500) is used to seal at least between the measuring rod (200) and the wire (700), and to fix the position of the wire (700). The specific implementation of the measuring rod sealing assembly (400) and the wire sealing assembly (500) will be described in detail in the following embodiments. The measuring rod sealing assembly (400) and the wire sealing assembly (500) work together to ensure the sealing of the device and the reliability of the test results.

[0052] The embodiment of the present invention proposes a sensor replacement positioning sealing device and installation method for a closed container. By setting a displacement sensor, the vibration of the fuel assembly under the action of high-temperature fluid can be measured and monitored to obtain the flow-induced vibration response data of the fuel assembly. The relative distance between the sensor and the fuel assembly can be adjusted by threading the measuring rod with the connecting pipe seat installed in the test container, and the thread on the measuring rod is adjusted to ensure that the position of the sensor probe can be adjusted according to the actual position after thermal expansion and contraction, and the probe is within the measuring range, ensuring that the sensor effectively monitors the fuel assembly. The sealing between the measuring rod and the connecting pipe seat is achieved by the measuring rod sealing assembly, and the sealing between the measuring rod and the wire is achieved by the wire sealing assembly, thereby ensuring the high temperature and high pressure environment in the test container to avoid external disturbances.

[0053] The device can realize the replacement of displacement sensors, the adjustment of the relative position between the displacement sensor and the measured object, i.e., the fuel assembly, and the sealing of the sensor wire under high temperature and high pressure environment. It can also solve the problem that the distance between the sensor and the measured object exceeds the sensor measurement range due to thermal expansion under high temperature and high pressure, so that the displacement response of the fuel assembly under high temperature fluid can be measured safely and accurately. The installation and disassembly of the present invention will not affect the structure of the device and the sensor. It is a detachable device, which can realize the replacement and reuse of the sensor.

[0054] In one embodiment, the sleeve (100) is used to be sleeved on the outside of the sensor probe (600) and is threadedly connected to the sensor probe (600). The measuring rod (200) is sleeved on the outside of the sleeve (100) and is threadedly connected to the sleeve (100).

[0055] The sleeve (100) is a sleeve with internal and external threads. The sensor probe (600) can be installed and removed through the sleeve (100) without affecting the structure of the sensor probe (600). A sleeve (100) matching the sensor probe (600) can be processed for sensor probes (600) of any size. The outer diameter of the sleeve (100) matches the measuring rod (200) and can be installed on the measuring rod (200).

[0056] In one embodiment, if Figure 2 As shown, the inner wall of the connecting pipe seat (300) is provided with a first boss (301), and the first boss (301) and the measuring rod (200) are respectively provided with threads on the opposite side, the measuring rod (200) is connected to the connecting pipe seat (300), and the measuring rod (200) is threadedly connected to the first boss (301).

[0057] The first boss (301) is an annular boss protruding from the inner wall of the pipe socket (300), and the first boss (301) is provided with a thread on the surface of the measuring rod (200), and the outer wall of the measuring rod (200) is provided with a thread. The first boss (301) is provided to realize the threaded connection and provide an installation space for the measuring rod sealing assembly (400).

[0058] In one embodiment, the measuring rod sealing assembly (400) includes a first washer assembly and a first locking nut (410), and the inner wall of the connecting pipe seat (300) is provided with a second boss (302). The first washer assembly is sleeved on the measuring rod (200) from the side of the second boss (302) away from the sleeve (100), and is partially 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 to the connecting pipe seat (300) from the side of the connecting pipe seat (300) away from the sleeve (100), and the first locking nut (410) cooperates with the second boss (302) to squeeze the first washer assembly.

[0059] like Figure 2 As shown, the second boss (302) is an annular boss provided 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 washer assembly and the first locking nut (410) are both annular parts, which can then be sleeved on the outer circumference of the measuring rod (200). Figure 3-4As shown, a first through hole (411) is formed on the first locking nut (410), 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) includes an internal thread, and an outer wall of the pipe socket (300) away from the sleeve (100) is provided with an external thread. The first locking nut (410) is screwed to the pipe socket (300) in a buckled manner, and then cooperates with the second boss (302) to press the first washer assembly from opposite sides of the first washer assembly.

[0060] In one embodiment, the first washer assembly includes a first soft washer (420), a second soft washer (430) and a first compression washer (440). The first soft washer (420), the second soft washer (430) and the first compression washer (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 connecting pipe seat (300). The first soft washer (420), the second soft washer (430) and the first compression washer (440) are arranged in a direction away from the sleeve (100). The first soft washer (420) is a T-shaped washer. Part of the structure of the first soft washer (420) is located between the second boss (302) and the measuring rod (200). The first locking nut (410) is used to squeeze the first compression washer (440).

[0061] The first soft washer (420), the second soft washer (430) and the first compression washer (440) are all annular washers. The first soft washer (420) and the second soft washer (430) are both flexible washers, such as being made of rubber material. The end of the first soft washer (420) with a smaller outer diameter is pressed between the second boss (302) and the measuring rod (200). The first compression washer (440) is a metal washer. After the first locking nut (410) is tightened, it will drive the first soft washer (420) and the second soft washer (430) to be squeezed outward, thereby achieving the sealing of the measuring rod (200).

[0062] In one embodiment, the wire sealing assembly (500) includes a second washer 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 washer assembly is sleeved on the wire (700) from the side of the third boss (201) away from the sleeve (100), and is partially located between the third boss (201) and the wire (700). The second locking nut (510) is sleeved on the wire (700), and is 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) cooperates with the third boss (201) to squeeze the second washer assembly.

[0063] like Figure 2As shown, the third boss (201) is an annular boss provided on one end of the measuring rod (200) away from the sleeve (100). The second washer assembly and the second locking nut (510) are both annular parts, which can then 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, and the outer wall of the side of the measuring rod (200) away from the sleeve (100) is provided with an external thread. The second locking nut (510) is screwed to the measuring rod (200) in a buckled manner, and then cooperates with the third boss (201) to press the second washer assembly from the opposite sides of the second washer assembly.

[0064] In one 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). The third soft gasket (520), the fourth soft gasket (530) and the second compression gasket (540) are arranged in a direction away from the sleeve (100), such as Figure 5-6 As shown, the third soft washer (520) is a T-shaped washer, a portion of the structure of the third soft washer (520) is located between the third boss (201) and the wire (700), and the second locking nut (510) is used to squeeze the second compression washer (540).

[0065] The third soft washer (520), the fourth soft washer (530) and the second compression washer (540) are all annular washers. The third soft washer (520) and the fourth soft washer (530) are both flexible washers, such as rubber materials. The end with a smaller outer diameter of the third soft washer (520) is pressed between the third boss (201) and the wire (700). The second compression washer (540) is a metal washer. After the second locking nut (510) is tightened, it will drive the third soft washer (520) and the fourth soft washer (530) to be squeezed outward, thereby achieving the sealing of the wire (700).

[0066] In one embodiment, the second washer assembly further comprises: a brake pin (550), such as Figure 7-8 As shown, a first limiting groove (541) is provided on the second clamping washer (540), and a second limiting groove is provided on the measuring rod (200), the first limiting groove (541) and the second limiting groove are opposite to each other, and a brake pin (550) is located in the first limiting groove (541) and the second limiting groove, and is used to limit the relative movement of the second clamping washer (540) and the measuring rod (200) in the circumferential direction.

[0067] The first limiting groove (541) and the second limiting groove may be strip grooves extending in the extension direction of the wire (700) and having a semicircular cross section, and the brake pin (550) is a cylindrical pin. The brake pin (550) can be used to locate the circumferential position of the second clamping washer (540) and the measuring rod (200), thereby preventing the measuring rod (200) and the second clamping washer (540) from rotating relative to each other during installation, thereby preventing the wire (700) from being pulled and broken.

[0068] In one embodiment, the third soft washer (520), the fourth soft washer (530) and the second compression washer (540) are all split washers. Fig. 9 As shown, the second gasket assembly also includes: a gasket cap (560), the gasket cap (560) is sleeved on the wire (700), the gasket cap (560) includes a pressing surface (561) and a surrounding surface (562), the surrounding surface (562) is connected to the pressing surface (561) and surrounds the pressing surface, the surrounding surface (562) is perpendicular to the pressing surface (561), the pressing surface (561) is used to squeeze the end surface of the second pressing gasket (540) from the side of the second pressing gasket (540) away from the sleeve (100), and the surrounding surface (562) is used to sleeve the second pressing gasket (540) in the circumferential direction of the second pressing gasket (540).

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

[0070] On the other hand, Fig.10 As shown, the present application also provides a method for installing a sensor replacement positioning sealing device of a closed 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 into the internal thread of the sleeve (100) through the external thread, and finally the probe end face, that is, the detection end of the sensor probe (600) is exposed. The sleeve (100) equipped with the displacement sensor probe (600) is screwed into the internal thread of the end of the measuring rod (200) through the external thread, and the sensor wire (700) is led out from the internal through hole of the measuring rod (200).

[0073] S2. Threading the measuring rod (200) to the connecting socket (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 object is within the sensor range.

[0074] The measuring rod (200) equipped with the sensor probe (600) is inserted into the pipe socket (300) welded on the container, and the thread on the measuring rod (200) is screwed into the sealing thread in the pipe socket (300) to be fixed therewith. Then, the depth of the measuring rod (200) screwed into the pipe socket (300) is adjusted, and the voltage value of the displacement sensor is synchronously measured 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 object, i.e., the fuel assembly, is within the sensor range.

[0075] S3, sleeve the measuring rod sealing assembly (400) on the measuring rod (200), and seal the measuring rod (200) and the connecting pipe seat (300).

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

[0077] S4. Sleeve the wire sealing assembly (500) onto the wire (700) to seal the measuring rod (200) and the wire (700).

[0078] Will Figure 5 -6, the third soft washer (520) cut in half, Figure 1 The fourth soft washer (530) is clamped against the wire (700) of the sensor, and the third soft washer (520) is pressed into the through hole of the third boss (201) inside the measuring rod (200). Figure 7-8 The second compression washer (540) in the middle half clamps the sensor wire (700) and pushes the measuring rod (200) to press Figure 1The fourth soft washer (530) is inserted into the measuring rod (200) and the second pressing washer (540) is rotated to align the first limiting groove (541) 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 to prevent the measuring rod (200) and the second pressing washer (540) from rotating relative to each other during installation and thus clamping off the wire (700). Fig. 9 The washer cap (560) in the middle covers the second compression washer (540) to prevent the second compression washer (540) split in half from loosening and failing to clamp the wire (700), and when the second locking nut (510) is tightened to squeeze the seal, the second compression washer (540) is evenly stressed, thereby improving the sealing effect. Figure 3 A similar second locking nut (510) drives a second gasket assembly to achieve sealing of the sensor wire (700).

[0079] When the position of the sensor probe (600) needs to be adjusted, it is only necessary to screw the measuring rod (200), so that the position of the sensor probe (600) is easily adjusted and the container is always sealed during the process.

[0080] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A sensor replacement positioning and sealing device for a closed container, characterized in that: include: A measuring rod (200), a connecting pipe seat (300), a measuring rod sealing assembly (400) and a wire sealing assembly (500); The measuring rod (200) is used to connect to the sensor probe (600), the wire (700) of the sensor probe (600) is connected to the measuring rod (200), and the connecting socket (300) is used to connect to the container; The measuring rod (200) is threadedly connected to the connecting pipe seat (300); the measuring rod sealing assembly (400) is respectively connected to the measuring rod (200) and the connecting pipe seat (300) and is used for sealing between the measuring rod (200) and the connecting pipe seat (300); the wire sealing assembly (500) is connected to the measuring rod (200), and the wire sealing assembly (500) is used to connect the wire (700) and is used for sealing between the measuring rod (200) and the wire (700).

2. The sensor replacement positioning and sealing device for a sealed container according to claim 1, characterized in that: Also includes: A sleeve (100), the sleeve (100) being used to connect the sensor probe (600), and the measuring rod (200) being connected to the sleeve (100); The sleeve (100) is used to be sleeved on the outside of the sensor probe (600) and is threadedly connected to the sensor probe (600); The measuring rod (200) is sleeved on the outside of the sleeve (100) and is threadedly connected to the sleeve (100).

3. The sensor replacement positioning and sealing device for a sealed container according to claim 1, characterized in that: The inner wall of the connecting pipe 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 connecting pipe seat (300), and the measuring rod (200) is threadedly connected to the first boss (301).

4. The sensor replacement positioning and sealing device for a sealed container according to claim 1, characterized in that: The measuring rod sealing assembly (400) comprises a first washer assembly and a first locking nut (410), and the inner wall of the connecting pipe 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 is partially 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 to the connecting pipe seat (300) via a side of the connecting pipe seat (300) away from the sleeve (100). The first locking nut (410) cooperates with the second boss (302) to squeeze the first washer assembly.

5. The sensor replacement positioning and sealing device for a sealed container according to claim 4, characterized in that: The first gasket assembly comprises a first soft gasket (420), a second soft gasket (430) and a first compression gasket (440); The first soft washer (420), the second soft washer (430) and the first compression washer (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 connecting pipe seat (300). The first soft washer (420), the second soft washer (430) and the first compression washer (440) are arranged in a direction away from the sleeve (100). The first soft washer (420) is a T-shaped washer. Part of the structure of the first soft washer (420) is located between the second boss (302) and the measuring rod (200). The first locking nut (410) is used to squeeze the first compression washer (440).

6. The sensor replacement positioning and sealing device for a sealed container according to claim 1, characterized in that: The wire sealing assembly (500) comprises a second washer 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 washer assembly is sleeved on the wire (700) from a side of the third boss (201) away from the sleeve (100), and is partially located between the third boss (201) and the wire (700); The second locking nut (510) is sleeved on the conductive wire (700) and is connected to the measuring rod (200) from a side of the measuring rod (200) away from the sleeve (100). The second locking nut (510) cooperates with the third boss (201) to squeeze the second washer assembly.

7. The sensor replacement positioning and sealing device for a sealed container according to claim 6, 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 washer (520), the fourth soft washer (530) and the second compression washer (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). The third soft washer (520), the fourth soft washer (530) and the second compression washer (540) are arranged in a direction away from the sleeve (100). The third soft washer (520) is a T-shaped washer. Part of the structure of the third soft washer (520) is located between the third boss (201) and the wire (700). The second locking nut (510) is used to squeeze the second compression washer (540).

8. The sensor replacement positioning and sealing device for a sealed container according to claim 7, characterized in that: The second washer assembly also includes: a brake pin (550); a first limiting groove (541) is provided on the second compression washer (540); a second limiting groove is provided on the measuring rod (200); the first limiting groove (541) and the second limiting groove are opposite to each other; the brake pin (550) is located in the first limiting groove (541) and the second limiting groove, and is used to limit the relative movement of the second compression washer (540) and the measuring rod (200) in the circumferential direction.

9. The sensor replacement positioning and sealing device for a sealed container according to claim 7, characterized in that: The third soft washer (520), the fourth soft washer (530) and the second compression washer (540) are all split washers, and the second washer assembly also includes: a washer cap (560), the washer cap (560) is sleeved on the wire (700), the washer cap (560) includes a pressing surface (561) and a surrounding surface (562), the surrounding surface (562) is connected to the pressing surface (561) and surrounds the pressing surface, the surrounding surface (562) is perpendicular to the pressing surface (561), the pressing surface (561) is used to squeeze the end surface of the second compression washer (540) from the side of the second compression washer (540) away from the sleeve (100), and the surrounding surface (562) is used to sleeve the second compression washer (540) in the circumferential direction of the second compression washer (540).

10. A method for installing a sensor replacement positioning sealing device for a closed container, characterized in that: The method comprises: Connecting the sensor probe (600) to the measuring rod (200), and passing the wire (700) of the sensor probe (600) through the measuring rod (200); The measuring rod (200) is threadably connected to the connecting pipe 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 object is within the sensor range; The measuring rod sealing assembly (400) is sleeved on the measuring rod (200) to seal the measuring rod (200) and the connecting pipe seat (300); The wire sealing assembly (500) is sleeved onto the wire (700) to seal the measuring rod (200) and the wire (700).

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