Sensor lead sealing device and method for flow-induced vibration test pressure-bearing equipment

Abstract

The invention provides a sensor lead sealing device and method for flow-induced vibration test pressure-bearing equipment, and the device comprises a flange cover which is provided with at least one to-be-plugged opening, and each to-be-plugged opening is provided with a sealing assembly; the sealing assembly comprises a lead wire sealing piece, the lead wire sealing piece is installed in a to-be-sealed opening, the lead wire sealing piece comprises a first sealing part and a second sealing part which are spliced, and the first sealing part and the second sealing part are matched to form at least one wire passing hole for installing a sensor lead wire in a sealed mode. Wherein the axial extending direction of the wire passing hole is consistent with the axial direction of the flange cover, the sensor lead penetrates through the wire passing hole, and the two ends of the sensor lead extend to the two opposite sides of the flange cover respectively. According to the sealing device, the lead wire sealing piece comprises the first sealing part and the second sealing part which are spliced, so that the sensor lead wire which is large in sensor joint and cannot be detached is conveniently sealed, structures such as a lead wire pipe do not need to be specially arranged, and the sealing structure is simplified.

Description

Technical Field

[0001] The invention relates to the technical field of sensor lead sealing, and in particular to a sensor lead sealing device and method for flow-induced vibration test pressure-bearing equipment. Background Art

[0002] The flow-induced vibration test is a key link in the research and development of reactor equipment. Its main content is to fix force, acceleration and displacement sensors on the structure impacted by the fluid, and judge the structural and functional integrity of the equipment by reading the force, acceleration and displacement data of the structure impacted by the fluid in the test. During the test, the above sensors need to be led out to the outside of the pressure-bearing equipment of the flow-induced vibration test.

[0003] For the sensor lead, one end is fixed on the structure to be measured, and the other end is the sensor connector. Generally speaking, the size of the sensor connector is much larger than that of the sensor lead. Therefore, traditional sealing devices such as ferrule connectors cannot pass through the sensor connector, or after passing through, they cannot be sealed due to the large gap between the sensor lead and the connector. If the glue injection method is used for sealing, the sensor lead will be damaged and cannot be used again.

[0004] Currently, there are sealing structures for sensor leads, but they are generally made through specially designed lead tubes and other structures. The manufacturing process is complicated. Moreover, once the number of sensor leads changes, many parts need to be reprocessed, and the sealing structure is not highly reusable.

[0005] Based on this, the inventor of the present application proposes a sensor lead sealing device and method for flow-induced vibration test pressure-bearing equipment, in order to solve the above-mentioned technical problems. Summary of the invention

[0006] The technical problem to be solved by the present invention is to overcome the defects of the sensor lead sealing structure in the prior art, that is, the manufacturing process is complicated and the reusability is poor, and to provide a sensor lead sealing device and method for flow-induced vibration test pressure-bearing equipment.

[0007] The present invention solves the above technical problems through the following technical solutions:

[0008] The present invention provides a sensor lead sealing device for flow-induced vibration test pressure-bearing equipment, which is characterized by comprising:

[0009] The flange cover is provided with at least one opening to be sealed, and a sealing assembly is installed at each opening to be sealed;

[0010] The sealing assembly includes a lead seal, which is installed in the port to be sealed, and includes a first sealing portion and a second sealing portion that are spliced ​​together, and the first sealing portion and the second sealing portion cooperate to form at least one wire hole for sealing and installing the sensor lead; wherein,

[0011] The axial extension direction of the wire-passing hole is consistent with the axial direction of the flange cover. The sensor lead wire is passed through the wire-passing hole and two ends thereof extend to opposite sides of the flange cover respectively.

[0012] According to one embodiment of the present invention, the first sealing portion and the second sealing portion are symmetrically arranged;

[0013] The first sealing part and the second sealing part are each provided with at least one matching groove on the installation side surfaces facing each other. When the first sealing part and the second sealing part are installed, the corresponding matching grooves cooperate to form the wire passing hole, and the cross-sectional dimension of the wire passing hole is at least smaller than the corresponding cross-sectional dimension of the sensor lead.

[0014] According to one embodiment of the present invention, the first sealing portion and the second sealing portion respectively include a first metal half ring, a rubber pad half ring and a second metal half ring along their axial direction;

[0015] The rubber pad half ring is located between the first metal half ring and the second metal half ring, and the wire passing hole is penetrated through the first metal half ring, the rubber pad half ring and the second metal half ring.

[0016] According to one embodiment of the present invention, the sealing assembly further comprises a sealing bolt, one end of which presses against the lead seal, and the other end of which is threadably engaged with the port to be sealed;

[0017] An escape channel is provided on one side of the sealing bolt, and the escape channel is used to escape the sensor lead so as to install the sealing bolt to the port to be sealed.

[0018] According to one embodiment of the present invention, the sealing bolt is provided with an external thread that matches the port to be sealed, and a through hole is provided inside, and at least a portion of the top of the through hole is a matching countersunk hole that matches a wrench;

[0019] The sealing bolt has a side portion provided with an avoidance groove connected to the through hole, the distance of the avoidance groove along the axial direction of the sealing bolt is at least greater than the depth of the matching countersunk hole, and the top of the external thread on the outside of the sealing bolt is at least located below the bottom of the avoidance groove, so that one end of the sensor lead wire passes through the through hole to the avoidance groove in sequence and extends to the outside of the flange cover.

[0020] According to an embodiment of the present invention, a mounting pad and a pad fixing bolt are further provided on the sealing bolt, one end of the mounting pad is inserted into the avoidance channel, and the other end is connected to the flange cover through the sealing bolt.

[0021] According to one embodiment of the present invention, the mounting pad is T-shaped, and the number of the pad fixing bolts is two;

[0022] The two sealing bolts are correspondingly installed on opposite sides of the avoidance channel.

[0023] According to an embodiment of the present invention, one end of the mounting pad extends to a side of the sealing bolt close to the lead seal.

[0024] According to one embodiment of the present invention, the port to be blocked includes a first hole portion, a second hole portion and a third hole portion which are connected in sequence along its axial direction, and the cross-sectional dimensions of the first hole portion, the second hole portion and the third hole portion decrease along the axial direction of the port to be blocked;

[0025] The lead wire seal is installed in the second hole portion, and the sealing bolt is installed in the first hole portion and one end of the sealing bolt presses against the lead wire seal.

[0026] The present invention also provides a sensor lead sealing method for flow-induced vibration test pressure-bearing equipment, characterized in that it is implemented by using the sensor lead sealing device for flow-induced vibration test pressure-bearing equipment as described above, and the sealing method comprises:

[0027] Step 1: Install the lead seal to the sensor lead and place them together into the port to be sealed;

[0028] Step 2, installing the sealing bolt and making one end of the sealing bolt press against the lead seal; wherein one end of the sensor lead is led to the outside of the flange cover through the avoidance groove;

[0029] Step 3: Connect the sealing bolt to the flange cover by using a mounting pad and a pad fixing bolt;

[0030] Step 4: Use a wrench to tighten the sealing bolt; wherein the sensor lead is led out through the avoidance groove to avoid interference with the wrench.

[0031] The positive and progressive effects of the present invention are:

[0032] The present invention discloses a sensor lead sealing device for flow-induced vibration test pressure-bearing equipment, wherein the lead seal comprises a first sealing portion and a second sealing portion which are spliced ​​together. This facilitates sealing of sensor leads having a large sensor joint and a joint that cannot be disassembled, and eliminates the need for specially arranging structures such as lead tubes, thereby simplifying the sealing structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The above and other features, properties and advantages of the present invention will become more apparent through the following description in conjunction with the accompanying drawings and embodiments, in which:

[0034] Figure 1 It is a schematic diagram of the installation of the sensor lead sealing device for flow-induced vibration test pressure-bearing equipment of the present invention;

[0035] Figure 2 for Figure 1 A top view of the middle seal assembly;

[0036] Figure 3 for Figure 2 A cross-sectional view of the sealing device;

[0037] Figure 4 for Figure 2 Structural schematic diagram of the sealing bolt;

[0038] Figure 5 The present invention is a flow chart of a sensor lead sealing method for flow-induced vibration test pressure-bearing equipment.

[0039] 1. flange cover; 11. opening to be sealed; 111. first hole portion; 112. second hole portion; 113. third hole portion;

[0040] 2. Sealing components;

[0041] 21. Lead wire seal; 211. First seal portion; 212. Second seal portion; 213. Wire hole; 214. Matching groove; 215. First metal half ring; 216. Second metal half ring; 217. Rubber pad half ring;

[0042] 22. Sealing bolt; 221. Avoidance channel; 222. Through hole; 223. Avoidance groove; 224. Mounting pad; 225. Pad fixing bolt;

[0043] 3. Sensor leads. DETAILED DESCRIPTION

[0044] The present invention is further described below in conjunction with specific embodiments and drawings. More details are elaborated in the following description to facilitate a full understanding of the present invention. However, the present invention can obviously be implemented in a variety of other ways different from the description herein. Those skilled in the art can make similar generalizations and deductions based on actual application situations without violating the connotation of the present invention. Therefore, the protection scope of the present invention should not be limited by the content of this specific embodiment.

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0046] Please refer to Figures 1 to 3 The present invention proposes a sensor lead sealing device for flow-induced vibration test pressure-bearing equipment, including a flange cover 1, on which is provided at least one opening 11 to be sealed, and a sealing assembly 2 is installed at each opening 11 to be sealed.

[0047] The sealing assembly 2 includes a lead wire seal 21, which is installed in the port to be sealed 11. The lead wire seal 21 includes a first sealing portion 211 and a second sealing portion 212, which are spliced ​​together to form at least one wire hole 213 for sealing and installing the sensor lead wire 3. The axial extension direction of the wire hole 213 is consistent with the axial direction of the flange cover 1, and the sensor lead wire 3 is passed through the wire hole 213 and its two ends extend to the opposite sides of the flange cover 1 respectively.

[0048] It can be seen that because the size of the sensor connector is much larger than that of the sensor lead 3, if a ferrule-type sealing device is used, it may not be able to pass through the sensor connector, or after passing through the sensor connector, the gap between the sealing device and the sensor lead 3 is too large, resulting in sealing difficulties.

[0049] Based on this, the present application sets the lead seal 21 to a splicing type, that is, the first sealing part 211 and the second sealing part 212 are spliced ​​to form the lead seal 21. When in use, the first sealing part 211 and the second sealing part 212 are opened, and the sensor lead 3 is inserted into the wire hole 213 formed by the first sealing part 211 and the second sealing part 212, and then the lead seal 21 is installed in the port 11 to be sealed.

[0050] In this manner, it is easy to seal the sensor lead 3 whose sensor joint is large and cannot be disassembled. The structure is simple and the arrangement is flexible, which protects the structural integrity of the sensor lead 3 and allows for repeated use.

[0051] Reference Figure 2The first sealing portion 211 and the second sealing portion 212 are symmetrically arranged; the first sealing portion 211 and the second sealing portion 212 are each provided with at least one matching groove 214 on the installation sides facing each other, and when the first sealing portion 211 and the second sealing portion 212 are installed, the corresponding matching grooves 214 cooperate to form a wire hole 213, and the cross-sectional size of the wire hole 213 is at least smaller than the cross-sectional size of the corresponding sensor lead 3.

[0052] It can be seen that the first sealing portion 211 and the second sealing portion 212 are cylindrical after being matched. Correspondingly, the opening 11 to be blocked is a circular hole.

[0053] The first sealing portion 211 and the second sealing portion 212 may be an asymmetric structure or a symmetric structure, which is not limited here.

[0054] The first sealing portion 211 and the second sealing portion 212 are both provided with a matching groove 214 on one side facing each other. When the first sealing portion 211 and the second sealing portion 212 are matched, two corresponding matching grooves 214 are spliced ​​to form a wire hole 213 .

[0055] For example, the cross-sectional shape of the sensor lead 3 may be circular, square or other shapes. Correspondingly, the matching groove 214 may be semicircular, half of a square or the like.

[0056] Reference Figure 1 and Figure 2 Each lead seal 21 may be provided with a wire hole 213 corresponding to a certain shape, such as a rectangle; if it is necessary to seal sensor leads 3 of other shapes, such as a circle, a hole may be opened on the flange cover 1, and different lead seals 21 may be further provided. Figure 2 Three different shapes of wire holes 213 are provided on the lead seal 21. The shape is only an example and is not limited here. In actual use, wire holes 213 of different shapes and sizes can be provided to correspond to the cross-sectional shape of the actual sensor lead 3.

[0057] That is, each lead seal 21 is provided with different numbers and shapes of wire holes 213 according to the known shape, size and quantity of the sensor leads 3 , which can be adjusted according to actual needs and is not limited here.

[0058] Reference Figure 3 The first sealing part 211 and the second sealing part 212 respectively include a first metal half ring 215, a rubber pad half ring 217 and a second metal half ring 216 along their axial direction; the rubber pad half ring 217 is located between the first metal half ring 215 and the second metal half ring 216, and the wire hole 213 is penetrated by the first metal half ring 215, the rubber pad half ring 217 and the second metal half ring 216.

[0059] The first metal half ring 215 and the second metal half ring 216 can meet the rigidity of the overall structure of the lead seal 21, and the rubber pad half ring 217 is when the external force acts on the first metal half ring 215 and the second metal half ring 216, the pressure size of itself becomes larger, and ensures that it fits tightly with the inner wall of the port to be blocked 11 to ensure its sealing performance. That is, it can avoid the medium on both sides of the flange cover 1 from communicating.

[0060] Reference Figure 3 and Figure 4 The sealing assembly 2 also includes a sealing bolt 22, one end of which presses against the lead seal 21, and the other end is threadedly engaged with the port to be sealed 11; an avoidance channel 221 is opened on one side of the sealing bolt 22, and the avoidance channel 221 is used to avoid the sensor lead 3 so as to install the sealing bolt 22 to the port to be sealed 11.

[0061] It can be known that the sealing bolt 22 is used to fix the lead wire seal 21 in the port 11 to be sealed.

[0062] The avoidance channel 221 provided on the sealing bolt 22 is for avoiding the sensor lead 3 , so that the sealing bolt 22 can be sleeved on the outside of the sensor lead 3 through the avoidance channel 221 without the need for sleeve-type installation.

[0063] Specifically, the sealing bolt 22 is provided with an external thread (not shown) that cooperates with the port 11 to be sealed, and a through hole 222 is provided on the inner side, and at least a part of the top of the through hole 222 is a matching countersunk hole (not shown) that cooperates with a wrench; the side of the sealing bolt 22 is provided with an avoidance groove 223 that is connected to the through hole 222, and the distance of the avoidance groove 223 along the axial direction of the sealing bolt 22 is at least greater than the depth of the matching countersunk hole, and the top of the external thread on the outer side of the sealing bolt 22 is at least below the bottom of the avoidance groove 223, so that one end of the sensor lead 3 passes through the through hole 222 to the avoidance groove 223 in sequence and extends to the outside of the flange cover 1.

[0064] That is, the outer thread of the sealing bolt 22 is matched with the inner thread of the port to be blocked 11, and the through hole 222 provided in the middle of the sealing bolt 22 is used to avoid the sensor lead 3 and sleeve the sealing bolt 22 on the outside of the sensor lead 3; on the other hand, it is used to provide a matching countersunk hole, and the sealing bolt 22 is matched with the port to be blocked 11 by matching the wrench with the matching countersunk hole. The matching countersunk hole can be a square threaded hole, a hexagonal threaded hole, etc., and the hexagonal threaded hole is used as an example for description here, and is not specifically limited.

[0065] It can be seen that one end of the sensor lead 3 is fixed on the structure to be measured, and the other end is a sensor connector, and the fixed end and the connector end are located on opposite sides of the flange cover 1.

[0066] In order to avoid damage to the sensor lead 3 during the mating process of the wrench and the sealing bolt 22, the axial distance of the avoidance groove 223 along the sealing bolt 22 is made at least greater than the depth of the mating countersunk hole, so that there is a space between the bottom of the internal thread and the bottom of the avoidance groove 223, and the sensor lead 3 can be led to the outside of the flange cover 1 through the space.

[0067] Please continue to refer to Figure 2 and Figure 3 The sealing bolt 22 is also provided with a mounting pad 224 and a pad fixing bolt 225 . One end of the mounting pad 224 is inserted into the avoidance channel 221 , and the other end is connected to the flange cover 1 through the sealing bolt 22 .

[0068] That is, after the sealing bolt 22 and the flange cover 1 are installed, one end of the installation pad 224 is inserted into the avoidance channel 221 to prevent the sealing bolt 22 from being deformed during the sealing process, thereby affecting the sealing effect.

[0069] Furthermore, the mounting pad 224 is T-shaped, and the number of the pad fixing bolts 225 is two; the two sealing bolts 22 are correspondingly installed on the opposite sides of the avoidance channel 221.

[0070] The installation pad 224 can be fixed to the flange cover 1 by using the pad fixing bolts 225 to prevent the installation pad 224 from shaking or falling off.

[0071] Preferably, one end of the mounting pad 224 extends to a side of the sealing bolt 22 close to the lead wire seal 21 .

[0072] That is, the length of the mounting pad 224 corresponds to the length of the avoidance channel 221 , thereby improving the structural strength of the sealing bolt 22 and preventing its deformation.

[0073] Reference Figure 3 The port 11 to be sealed includes a first hole portion 111, a second hole portion 112 and a third hole portion 113 which are connected in sequence along its axial direction, and the cross-sectional dimensions of the first hole portion 111, the second hole portion 112 and the third hole portion 113 decrease along the axial direction of the port 11 to be sealed; the lead seal 21 is installed in the second hole portion 112, and the sealing bolt 22 is installed in the first hole portion 111 and one end presses against the lead seal 21.

[0074] The third hole portion 113 and the second hole portion 112 have a first limiting surface at a position adjacent to the second hole portion 112, which is used to limit one end of the lead seal 21. At the same time, one end of the sealing bolt 22 presses against the other end of the lead seal 21. Therefore, under the pressure from both sides, the rubber pad half ring 217 is compressed and deformed, and fits tightly with the inner wall of the port 11 to be sealed.

[0075] In summary, the present application can lead the sensor lead 3 out of the outside of the flow-induced vibration test pressure-bearing equipment while protecting the structural integrity of the sensor lead 3 and improving the reusability of the sealing device.

[0076] Moreover, the sealing device of the present application has a simple structure and flexible layout, and the number of sealing components 2 and the number and type of sensor leads 3 passing therethrough can be freely set according to actual needs, and there is no need to separately set up structures such as lead tubes. It only needs to open a hole on the flange plate, and the manufacturing process is simple.

[0077] The lead wire seal 21 is formed by splicing the first sealing portion 211 and the second sealing portion 212 , which is beneficial for sealing the sensor lead wire 3 whose joint is large and cannot be disassembled.

[0078] Please refer to Figure 5 The present invention also proposes a sensor lead sealing method for a flow-induced vibration test pressure-bearing device, which is characterized in that the sensor lead sealing device for a flow-induced vibration test pressure-bearing device is used as above, and the sealing method includes:

[0079] Step 1: Install the lead seal to the sensor lead and place them together into the port to be sealed;

[0080] Step 2, install the sealing bolt and make one end of the sealing bolt press against the lead wire seal; wherein one end of the sensor lead wire is led to the outside of the flange cover through the avoidance groove;

[0081] Step 3: Connect the sealing bolt to the flange cover using the installation pad and the pad fixing bolt;

[0082] Step 4: Use a wrench to tighten the sealing bolt; wherein the sensor lead is led out through the avoidance groove to avoid interference with the wrench.

[0083] That is, the present invention adjusts the structure of the sealing device so that the sealing bolt and the lead seal can complete the sealing of the sensor lead. The installation steps are simple and the sealing effect is good. There is no need to separately set up structures such as lead tubes, which is convenient for sealing sensor leads with large sensor connectors that cannot be disassembled.

[0084] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "install", "connect", "connect", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can also be a mechanical connection. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0085] The present application uses specific words to describe the embodiments of the present application. For example, "one embodiment", "an embodiment", and / or "some embodiments" refer to a certain feature, structure or characteristic related to at least one embodiment of the present application. Therefore, it should be emphasized and noted that "one embodiment" or "an embodiment" or "an alternative embodiment" mentioned twice or multiple times in different positions in this specification does not necessarily refer to the same embodiment. In addition, some features, structures or characteristics in one or more embodiments of the present application can be appropriately combined.

[0086] Although the present invention is disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications without departing from the spirit and scope of the present invention. Therefore, any modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the protection scope defined by the claims of the present invention.

Claims

1. A sensor lead sealing device for flow-induced vibration test pressure-bearing equipment, characterized in that: include: The flange cover is provided with at least one opening to be sealed, and a sealing assembly is installed at each opening to be sealed; The sealing assembly includes a lead seal, which is installed in the port to be sealed, and includes a first sealing portion and a second sealing portion that are spliced ​​together, and the first sealing portion and the second sealing portion cooperate to form at least one wire hole for sealing and installing the sensor lead; wherein, The axial extension direction of the wire-passing hole is consistent with the axial direction of the flange cover. The sensor lead wire is passed through the wire-passing hole and two ends thereof extend to opposite sides of the flange cover respectively.

2. The sensor lead sealing device for flow-induced vibration test pressure-bearing equipment according to claim 1, characterized in that: The first sealing portion and the second sealing portion are symmetrically arranged; The first sealing part and the second sealing part are each provided with at least one matching groove on the installation side surfaces facing each other. When the first sealing part and the second sealing part are installed, the corresponding matching grooves cooperate to form the wire passing hole, and the cross-sectional dimension of the wire passing hole is at least smaller than the corresponding cross-sectional dimension of the sensor lead.

3. The sensor lead sealing device for flow-induced vibration test pressure-bearing equipment according to claim 2, characterized in that: The first sealing part and the second sealing part respectively include a first metal half ring, a rubber pad half ring and a second metal half ring along their axial direction; The rubber pad half ring is located between the first metal half ring and the second metal half ring, and the wire passing hole is penetrated through the first metal half ring, the rubber pad half ring and the second metal half ring.

4. The sensor lead sealing device for flow-induced vibration test pressure-bearing equipment according to claim 1, characterized in that: The sealing assembly further comprises a sealing bolt, one end of which presses against the lead seal and the other end of which is threadably engaged with the port to be sealed; An avoidance channel is provided on one side of the sealing bolt, and the avoidance channel is used to avoid the sensor lead so as to install the sealing bolt to the port to be sealed.

5. The sensor lead sealing device for flow-induced vibration test pressure-bearing equipment according to claim 4, characterized in that: The sealing bolt is provided with an external thread that matches the port to be sealed, and a through hole is provided inside, and at least a portion of the top of the through hole is a matching countersunk hole that matches the wrench; The sealing bolt has a side portion provided with an avoidance groove connected to the through hole, the distance of the avoidance groove along the axial direction of the sealing bolt is at least greater than the depth of the matching countersunk hole, and the top of the external thread on the outside of the sealing bolt is at least located below the bottom of the avoidance groove, so that one end of the sensor lead wire passes through the through hole to the avoidance groove in sequence and extends to the outside of the flange cover.

6. The sensor lead sealing device for flow-induced vibration test pressure-bearing equipment according to claim 4, characterized in that: The sealing bolt is also provided with a mounting pad and a pad fixing bolt. One end of the mounting pad is inserted into the avoidance channel, and the other end is connected to the flange cover through the sealing bolt.

7. The sensor lead sealing device for flow-induced vibration test pressure-bearing equipment according to claim 6, characterized in that: The mounting pad is T-shaped, and the number of the pad fixing bolts is two; The two sealing bolts are correspondingly installed on opposite sides of the avoidance channel.

8. The sensor lead sealing device for flow-induced vibration test pressure-bearing equipment according to claim 6, characterized in that: One end of the mounting pad extends to a side of the sealing bolt close to the lead wire sealing member.

9. The sensor lead sealing device for flow-induced vibration test pressure-bearing equipment according to claim 4, characterized in that: The port to be blocked includes a first hole portion, a second hole portion and a third hole portion which are connected in sequence along its axial direction, and the cross-sectional dimensions of the first hole portion, the second hole portion and the third hole portion decrease along the axial direction of the port to be blocked; The lead wire seal is installed in the second hole portion, and the sealing bolt is installed in the first hole portion and one end of the sealing bolt presses against the lead wire seal.

10. A sensor lead sealing method for flow-induced vibration test pressure-bearing equipment, characterized in that: The method is implemented by using the sensor lead sealing device for flow-induced vibration test pressure-bearing equipment according to any one of claims 1 to 9, wherein the sealing method comprises: Step 1: Install the lead seal to the sensor lead and place them together into the port to be sealed; Step 2, installing the sealing bolt and making one end of the sealing bolt press against the lead seal; wherein one end of the sensor lead is led to the outside of the flange cover through the avoidance groove; Step 3: Connect the sealing bolt to the flange cover by using a mounting pad and a pad fixing bolt; Step 4: Use a wrench to tighten the sealing bolt; wherein the sensor lead is led out through the avoidance groove to avoid interference with the wrench.

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