A mounting base for a stick sensor and a sensor dismounting method

Abstract

This invention discloses a mounting base for a plug-in type sensor and a method for assembling and disassembling the sensor. The mounting base assembly includes a mounting base assembly and a sealing assembly. The mounting base assembly has an insertion channel, with one end of the insertion channel extending to connect to the plug-in type sensor and the other end to connect to a valve. The insertion channel communicates with the valve's switching channel. The sealing assembly is disposed within the insertion channel. The plug-in type sensor has a detection rod that engages with the sealing assembly when inserted or removed along the insertion channel. The sealing assembly seals the gap between the insertion channel and the detection rod, thereby sealing the valve's switching channel. The mounting base assembly can be installed on the valve. By providing the insertion channel and sealing assembly within the mounting base assembly, the plug-in type sensor can be inserted and removed while maintaining a sealed state, without requiring machine shutdown and without affecting the operation of pipeline equipment.

Description

Technical Field

[0001] This invention relates to the technical field of sensor connectors, and in particular to a mounting base for a plug-in type sensor and a method for assembling and disassembling the sensor. Background Technology

[0002] To monitor parameters such as pressure, temperature, and flow rate within pipelines, sensors and instruments with corresponding functions are installed in fluid pipeline systems. To ensure product quality and meet legal and regulatory requirements, most sensors and instruments on fluid pipelines need to be disassembled and periodically inspected. In existing technology, to facilitate the disassembly of these sensors and instruments, a manual ball valve is typically installed below them where they connect to the pipeline. When the ball valve is closed, the sensor can be quickly disassembled, minimizing the risk of fluid leakage. However, for rod-type sensors, the sensor has a long rod. When the rod passes through a valve, the valve itself cannot close, requiring the system to be stopped or the pipeline emptied before disassembly, making rapid disassembly difficult. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a mounting base for a plug-in type sensor, which solves the problem of inability to quickly disassemble the sensor without shutting down the system.

[0004] According to a first aspect of the present invention, a mounting base for a plug-in sensor includes: a mounting base assembly having an insertion channel, wherein one end of the mounting base assembly in the extension direction of the insertion channel is capable of being connected to a plug-in sensor, and the other end is capable of being connected to a valve, the insertion channel being connected to an on / off channel of the valve; A sealing assembly disposed within the insertion channel; The insert-type sensor has a detection rod that can abut against the sealing assembly when inserted or removed along the insertion channel. The sealing assembly can seal the gap between the insertion channel and the detection rod to seal the valve's opening and closing channel.

[0005] According to an embodiment of the present invention, a mounting base for a plug-in type sensor has at least the following advantages: the mounting base assembly can be installed on a valve; by providing a insertion channel and a sealing component within the mounting base assembly, the plug-in type sensor can be inserted and removed while maintaining a sealed state, without requiring machine shutdown. During installation, the detection rod is inserted through the insertion channel and sealed with the sealing component. At this time, the valve can be opened to allow the detection rod to be further inserted to complete the installation. During disassembly, the detection rod can be pulled out of the valve while maintaining a sealed state, allowing the valve to be closed promptly. After the detection rod is pulled out, there is only a small amount of leakage, which does not affect the operation of the pipeline equipment.

[0006] According to some embodiments of the present invention, the mounting base assembly includes a coaxially arranged connecting base and a valve connecting assembly, wherein the insert channel can be formed within the connecting base and the valve connecting assembly, the connecting base and an axis rotatable relative to the valve connecting assembly around the insert channel, the sealing assembly includes a first sealing structure, the connecting base is threadedly connected to the insert-type sensor, the valve connecting assembly is threadedly connected to the valve, and the first sealing structure is disposed within the valve connecting assembly.

[0007] According to some embodiments of the present invention, the valve connection assembly includes a slip-on seat and a valve connection seat, the slip-on seat being connected between the connection seat and the valve connection seat, and the slip-on seat being rotatably connected to the connection seat, the valve connection seat being threadedly connected to the slip-on seat, and the valve connection seat being threadedly connected to the valve, wherein the first sealing structure is disposed within the valve connection seat.

[0008] According to some embodiments of the present invention, the valve connecting seat is provided with a second internal thread groove, a limiting groove and a second through hole from top to bottom, and the inner diameters of the second internal thread groove, the limiting groove and the second through hole decrease in sequence. The first sealing structure is a first sealing ring, which is disposed in the limiting groove. The loose seat is threadedly connected to the second internal thread groove and presses the first sealing ring against the bottom wall of the limiting groove. The second through hole is used for the detection rod to pass through, and the outer peripheral wall of the valve connecting seat is provided with an external thread portion that is threadedly connected to the valve.

[0009] According to some embodiments of the present invention, a plurality of first sealing rings are provided, and each of the first sealing rings is stacked in the limiting groove along the vertical direction.

[0010] According to some embodiments of the present invention, the sealing assembly further includes a second sealing structure disposed within the connecting seat, wherein the plug-in sensor is capable of abutting the second sealing structure against the top of the sleeve seat.

[0011] According to some embodiments of the present invention, the connecting seat is provided with a first internal thread groove and a first through hole. The first through hole is provided on the bottom wall of the first internal thread groove, and the inner diameter of the first through hole is smaller than the inner diameter of the first internal thread groove. The first internal thread groove is used for threaded connection with the plug-in type sensor. The loose sleeve is inserted into the first through hole from top to bottom, and the top of the loose sleeve is provided with a flange in the circumferential direction. The first through hole can restrict the flange from passing through.

[0012] According to some embodiments of the present invention, the connecting seat is further provided with an annular groove, the annular groove being disposed at the bottom of the first internal thread groove, the inner diameter of the annular groove being larger than the inner diameter of the first internal thread groove, the flange abutting against the annular groove, and the annular groove having a clearance space that allows the flange to rotate.

[0013] According to some embodiments of the present invention, the second sealing structure is configured as a second sealing ring, which is disposed on the top of the flange, and the second sealing ring can be abutted against the top of the flange when the plug-in sensor is connected.

[0014] A sensor mounting and dismounting method according to a second aspect of the present invention includes using a mounting base for a plug-in type sensor as described above, the method comprising: When installing the plug-in sensor; The valve connector is threaded to the valve via the external thread, and the first sealing ring is placed in the limiting groove through the second internal thread groove. Insert the loose sleeve into the connecting seat from top to bottom, and abut the flange against the annular groove. Place the second sealing ring on the top of the flange, and pre-tighten the loose sleeve to the second internal thread groove of the valve connecting seat. The detection rod of the plug-in sensor is inserted into the insertion channel and abuts against the first sealing ring for sealing. After the first sealing ring is sealed, the valve opening channel is opened so that the detection rod can be further inserted, and the plug-in sensor is pre-tightly connected to the first internal thread groove of the connecting seat. Tighten the loose seat to the valve connecting seat. The bottom of the loose seat can compress the first sealing ring so that the first sealing ring can deform and seal. Tighten the connecting seat to the plug-in sensor so that the second sealing ring can be compressed and deformed to seal. When disassembling the plug-in sensor; Rotate the connector to disengage the plug-in sensor from the first internal thread groove, and pull the detection rod out to the valve's switching channel to close the valve's switching channel, so that the plug-in sensor can be further pulled out.

[0015] The sensor installation and removal method according to the embodiments of the present invention has at least the following beneficial effects: the above method enables the installation of plug-in type sensors in the pipeline system without shutdown, and the installation process is not prone to leakage. Furthermore, the pipeline system can also remove the plug-in type sensors without shutdown, which is convenient to operate and does not affect the operation of the system.

[0016] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 These are schematic diagrams illustrating the structure of some embodiments of the present invention; Figure 2 for Figure 1 A sectional view; Figure 3 This is a schematic diagram of the sensor installation process; Figure 4 for Figure 3 Exploded view; Figure 5 for Figure 3 A sectional view.

[0018] Figure label: Mounting base assembly 100; insertion channel 110; connecting seat 120; first internal thread groove 121; annular groove 122; first through hole 123; loose seat 130; flange 131; valve connecting seat 140; second internal thread groove 141; limiting groove 142; second through hole 143; Sealing assembly 200; First sealing ring 210; Second sealing ring 220; Insert-type sensor 300; Detection rod 310; Valve 400; Pipe fittings 500. Detailed Implementation

[0019] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0020] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0021] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0022] Reference Figures 1 to 5According to a first aspect of the present invention, a mounting base for a plug-in type sensor includes a mounting base assembly 100 and a sealing assembly 200. The mounting base assembly 100 has an insertion channel 110, and one end of the mounting base assembly 100 in the extending direction of the insertion channel 110 is connectable to a plug-in type sensor 300, and the other end is connectable to a valve 400. The insertion channel 110 communicates with the switching channel of the valve 400. The sealing assembly 200 is disposed within the insertion channel 110. The plug-in type sensor 300 has a detection rod 310, which abuts against the sealing assembly 200 when inserted or removed along the insertion channel 110. The sealing assembly 200 seals the gap between the insertion channel 110 and the detection rod 310 to seal the switching channel of the valve 400. The mounting base assembly 100 can be installed on the valve 400. By providing an insertion channel 110 and a sealing assembly 200 within the mounting base assembly 100, the insertion and removal of the rod-type sensor 300 can be completed while maintaining a sealed state, without requiring machine shutdown. During installation, the detection rod 310 is inserted through the insertion channel 110 and seals with the sealing assembly 200. At this time, the valve 400 can be opened to allow the detection rod 310 to be further inserted to complete the installation. During disassembly, the detection rod 310 can be pulled out of the valve 400 while maintaining a sealed state, so that the valve 400 can be closed in time. After the detection rod 310 is pulled out, there is only a small amount of leakage, which does not affect the operation of the pipeline equipment.

[0023] Specifically, the insertion rod sensor 300 can be inserted into the pipe fitting 500 for detection. The valve 400 can be located on the side wall of the pipe fitting 500 to form a three-way structure. The valve 400 can be a ball valve. The mounting base assembly 100 can be threaded or quick-connected to the valve 400. The mounting base assembly 100 has an insertion channel 110 that is approximately orthogonal to the pipe. A sealing component 200 is provided on the inner wall of the insertion channel 110. The sealing component 200 can be made of an elastic sealing material. The sealing component 200 is located above the opening and closing channel of the valve 400. When the sensor is inserted into the sealing component 200, the resistance increases, and the sensor rod 310 can be sensed to be inserted in place. At this time, the valve 400 can be opened so that the sensor rod 310 can pass through the valve 400 into the pipe. After being inserted in place, the sensor can be threaded or clamped to the mounting base assembly 100. During disassembly, the conventional device and mounting base assembly 100 can be separated first. Then, the detection rod 310 can be slowly pulled out. During the pulling process, the valve 400 can be lightly operated to sense whether the detection rod 310 has disengaged from the valve 400. After the detection rod 310 disengages from the valve 400, there is still a certain distance between it and the sealing assembly 200, allowing the operator to close the valve 400 in time. With the above structure, the sensor with the long detection rod 310 can be quickly disassembled and assembled without affecting the operation of the pipeline system, thus solving the pain points of disassembly and assembly of such sensors.

[0024] Reference Figure 2 and Figure 5 In some embodiments of the present invention, the mounting base assembly 100 includes a coaxially arranged connecting base 120 and a valve connecting assembly. An insertion channel 110 can be formed within the connecting base 120 and the valve connecting assembly. The connecting base 120 rotates relative to the valve connecting assembly along an axis that surrounds the insertion channel 110. The sealing assembly 200 includes a first sealing structure. The connecting base 120 is threadedly connected to the insert-type sensor 300, and the valve connecting assembly is threadedly connected to the valve 400. The first sealing structure is located within the valve connecting assembly. Specifically, the connecting base 120 and the valve connecting assembly can be a nested rotating connection structure. When assembling or disassembling the sensor, the valve connecting assembly can be first rotatably threadedly connected to the valve 400 to ensure a seal at the connection point. Then, when installing the sensor, the sensor can be directly inserted without rotation. After insertion, the connecting base 120 is rotated to securely connect the connecting base 120 to the sensor. This structure allows the insert-type sensor 300 to be installed without rotation, reducing relative movement with the sealing assembly 200, reducing installation resistance, and simplifying the installation process.

[0025] Reference Figures 2 to 5 In some embodiments of the present invention, the valve connection assembly includes a slip-on seat 130 and a valve connection seat 140. The slip-on seat 130 is connected between the connection seat 120 and the valve connection seat 140, and the slip-on seat 130 and the connection seat 120 are rotatably connected. The valve connection seat 140 is threadedly connected to the slip-on seat 130 and to the valve 400. A first sealing structure is disposed within the valve connection seat 140. Specifically, the slip-on seat 130 can be nested and rotatably connected to the connection seat 120, and the slip-on seat 130 and the valve connection seat 140 can rotate relative to each other, so that the connection seat 120 can be independently rotatably connected to the sensor, and the valve connection seat 140 can be independently rotatably connected to the valve 400. After the sensor and valve 400 are connected in the above positions, the slip-on seat 130 is rotated to tighten the connection, which facilitates the assembly operation.

[0026] Reference Figure 2 and Figure 5In some embodiments of the present invention, the valve connecting seat 140 is provided with a second internal thread groove 141, a limiting groove 142, and a second through hole 143 from top to bottom, and the inner diameters of the second internal thread groove 141, the limiting groove 142, and the second through hole 143 decrease sequentially. The first sealing structure is a first sealing ring 210, which is disposed in the limiting groove 142. The loose seat 130 is threadedly connected to the second internal thread groove 141 and presses the first sealing ring 210 against the bottom wall of the limiting groove 142. The second through hole 143 is used for the detection rod 310 to pass through, and the outer peripheral wall of the valve connecting seat 140 is provided with an external thread portion that is threadedly connected to the valve 400. Specifically, the first sealing ring 210 can be positioned in the limiting groove 142 from top to bottom, and the outer side wall of the lower part of the loose seat 130 is provided with an external thread portion that is threadedly engaged with the second internal thread groove 141. During installation, the first sealing ring 210 is first assembled in the limiting groove 142, the loose seat 130 and the valve connecting seat 140 are pre-tightened, and then the detection rod 310 is inserted into place through the second through hole 143. Then the loose seat 130 and the second internal thread groove 141 are tightened. At this time, the bottom of the loose seat 130 can press against the first sealing ring 210. After being pressed, the first sealing ring 210 can deform and expand radially, thereby further improving the sealing effect and achieving stable sealing to replace the shut-off effect of the valve 400.

[0027] Reference Figure 4 and Figure 5 In some embodiments of the present invention, multiple first sealing rings 210 are provided, and each first sealing ring 210 is stacked in the limiting groove 142 in the vertical direction. Specifically, four first sealing rings 210 can be provided and stacked in the vertical direction. When multiple first sealing rings 210 are stacked and engaged, the sealing distance can be increased, and each first sealing ring 210 can deform. Compared with a single sealing ring structure, under the abutment action of the loose seat 130, multiple first sealing rings 210 can fully expand and deform radially, resulting in a large deformation and superior sealing performance.

[0028] Reference Figure 4 and Figure 5 In some embodiments of the present invention, the sealing assembly 200 further includes a second sealing structure disposed within the connecting seat 120, and the insert-type sensor 300 can abut the second sealing structure against the top of the loose-fitting seat 130. Specifically, a second sealing structure may also be provided between the loose-fitting seat 130 and the connecting seat 120 to form a second sealing guarantee. When the first sealing structure fails, the second sealing structure can still provide a seal to prevent leakage.

[0029] Reference Figure 4 and Figure 5In some embodiments of the present invention, the connecting seat 120 is provided with a first internal thread groove 121 and a first through hole 123. The first through hole 123 is located on the bottom wall of the first internal thread groove 121, and the inner diameter of the first through hole 123 is smaller than the inner diameter of the first internal thread groove 121. The first internal thread groove 121 is used for threaded connection with the plug-in type sensor 300. The loose seat 130 is inserted into the first through hole 123 from top to bottom, and the top of the loose seat 130 is provided with a flange 131 in the circumferential direction. The first through hole 123 can restrict the flange 131 from passing through. Specifically, the loose seat 130 can be inserted from above the connecting seat 120, and the flange 131 structure can abut against the connecting seat 120 to achieve a rotatable connection, which is relatively convenient for assembly. The plug-in type sensor 300 can have a threaded part that threadedly engages with the first internal thread groove 121. When the sensor is tightened, it can press against the second sealing structure to achieve a full seal.

[0030] Reference Figure 4 and Figure 5 In some embodiments of the present invention, the connecting seat 120 is further provided with an annular groove 122, which is located at the bottom of the first internal thread groove 121. The inner diameter of the annular groove 122 is larger than the inner diameter of the first internal thread groove 121. The flange 131 abuts against the annular groove 122, and the annular groove 122 has a clearance space that allows the flange 131 to rotate. Specifically, when the loose seat 130 is installed on the connecting seat 120, the flange 131 can be located in the annular groove 122, so that there is a clearance space between the side wall of the flange 131 in the radial direction and the annular groove 122. This reduces frictional resistance when the loose seat 130 rotates, and at the same time, the machining accuracy requirement of the flange 131 can be reduced to avoid friction on the side wall during rotation.

[0031] Reference Figure 4 and Figure 5 In some embodiments of the present invention, the second sealing structure is a second sealing ring 220, which is disposed on the top of the flange 131. When the plug-in sensor 300 is connected, the second sealing ring 220 can abut against the top of the flange 131. Specifically, the second sealing structure can be a second sealing ring 220. After installing the loose sleeve seat 130, the second sealing ring 220 can be placed on the top of the flange 131, and then the sensor can be installed. After the sensor is tightened, it can abut against the second sealing ring 220, so that the second sealing ring 220 can expand and seal.

[0032] A sensor mounting and dismounting method according to a second aspect of the present invention includes using a mounting base for a plug-in type sensor as described above, the method comprising: When installing the 300 plug-in sensor; The valve connector 140 is threaded to the valve 400 via the external thread, and the first sealing ring 210 is placed in the limiting groove 142 through the second internal thread groove 141; thus, the valve connector 140 is assembled.

[0033] Insert the loose seat 130 into the connecting seat 120 from top to bottom, and abut the flange 131 against the annular groove 122. Place the second sealing ring 220 on the top of the flange 131. The loose seat 130 is pre-tightly connected to the second internal thread groove 141 of the valve connecting seat 140. This makes the loose seat 130 and the first sealing ring 210 not yet abutted and engaged, so that the insertion resistance between the first sealing ring 210 and the detection rod 310 is reduced, making insertion easier.

[0034] The detection rod 310 of the plug-in sensor 300 is inserted into the insertion channel 110 and abuts against the first sealing ring 210 for sealing. After the first sealing ring 210 is sealed, the switch channel of the valve 400 is opened so that the detection rod 310 can be further inserted, and the plug-in sensor 300 is pre-tightly connected to the first internal thread groove 121 of the connecting seat 120 so that the plug-in sensor 300 and the connecting seat 120 still have relative movement space.

[0035] Tighten the loose seat 130 to the valve connecting seat 140. The bottom of the loose seat 130 can compress the first sealing ring 210, so that the first sealing ring 210 can deform and seal. At this time, the first sealing ring 210 can deform radially and compress the side wall of the limiting groove 142 of the detection rod 310, thereby improving the sealing effect. Then tighten the connecting seat 120 to the plug-in sensor 300. Under the drive of the threaded transmission, the detection rod 310 can be inserted downward and drive the first sealing ring 210 to deform further, thereby further strengthening the sealing effect. At the same time, it can also cause the second sealing ring 220 to deform and seal under pressure, thereby forming a second seal. The sealing effect can be further enhanced to stably replace the shut-off effect of the valve 400.

[0036] When disassembling the 300 plug-in sensor; Rotating the connecting seat 120 disengages the plug-in sensor 300 from the first internal threaded groove 121. Pulling the detection rod 310 out to the switching channel of the valve 400 closes the valve 400's switching channel, allowing the plug-in sensor 300 to be further removed. The disassembly operation is very simple, facilitating quick removal of the sensor for inspection or maintenance.

[0037] The above-described disassembly and assembly method allows the installation of the plug-in sensor 300 in the pipeline system without shutting down the system. The installation process is also less prone to leakage. Furthermore, the plug-in sensor 300 can be removed from the pipeline system without shutting down the system. The operation is convenient and does not affect the system operation.

[0038] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0039] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A mounting base for a plug-in type sensor, characterized in that, include: Mounting base assembly (100) having insertion channel (110), and one end of the mounting base assembly (100) in the extension direction of the insertion channel (110) being connectable to a plug-in sensor, and the other end being connectable to a valve (400), the insertion channel (110) being connected to the switching channel of the valve (400); A sealing assembly (200) is disposed within the insertion channel (110); The plug-in sensor has a detection rod (310). When the detection rod (310) is inserted or removed along the insertion channel (110), it can abut against the sealing assembly (200). The sealing assembly (200) can seal the gap between the insertion channel (110) and the detection rod (310) to seal the opening and closing channel of the valve (400).

2. The mounting base for a plug-in type sensor according to claim 1, characterized in that, The mounting base assembly (100) includes a coaxially arranged connecting base (120) and a valve connecting assembly. The connecting base (120) and the valve connecting assembly can form the insertion channel (110). The connecting base (120) and the axis that can rotate around the insertion channel (110) are relative to the valve connecting assembly. The sealing assembly (200) includes a first sealing structure. The connecting base (120) is threadedly connected to the insert sensor. The valve connecting assembly can be threadedly connected to the valve (400). The first sealing structure is disposed in the valve connecting assembly.

3. A mounting base for a plug-in type sensor according to claim 2, characterized in that, The valve connection assembly includes a slip seat (130) and a valve connection seat (140). The slip seat (130) is connected between the connection seat (120) and the valve connection seat (140), and the slip seat (130) and the connection seat (120) are rotatably connected. The valve connection seat (140) is threadedly connected to the slip seat (130) and to the valve (400). The first sealing structure is disposed inside the valve connection seat (140).

4. A mounting base for a plug-in type sensor according to claim 3, characterized in that, The valve connecting seat (140) is provided with a second internal thread groove (141), a limiting groove (142) and a second through hole (143) from top to bottom. The inner diameters of the second internal thread groove (141), the limiting groove (142) and the second through hole (143) decrease in sequence. The first sealing structure is a first sealing ring (210). The first sealing ring (210) is located in the limiting groove (142). The loose seat (130) is threadedly connected to the second internal thread groove (141) and presses the first sealing ring (210) against the bottom wall of the limiting groove (142). The second through hole (143) is used for the detection rod (310) to pass through. The outer peripheral wall of the valve connecting seat (140) is provided with an external thread that is threadedly connected to the valve (400).

5. A mounting base for a plug-in type sensor according to claim 4, characterized in that, The first sealing ring (210) is provided in multiple ways, and each of the first sealing rings (210) is stacked in the limiting groove (142) in the vertical direction.

6. A mounting base for a plug-in type sensor according to claim 4, characterized in that, The sealing assembly (200) further includes a second sealing structure disposed within the connecting seat (120), and the plug-in sensor is capable of abutting the second sealing structure against the top of the sleeve seat (130).

7. A mounting base for a plug-in type sensor according to claim 6, characterized in that, The connecting seat (120) is provided with a first internal thread groove (121) and a first through hole (123). The first through hole (123) is located on the bottom wall of the first internal thread groove (121), and the inner diameter of the first through hole (123) is smaller than the inner diameter of the first internal thread groove (121). The first internal thread groove (121) is used to connect with the plug-in type sensor by thread. The loose seat (130) is inserted into the first through hole (123) from top to bottom, and the top of the loose seat (130) is provided with a flange (131) in the circumferential direction. The first through hole (123) can restrict the flange (131) from passing through.

8. A mounting base for a plug-in type sensor according to claim 7, characterized in that, The connecting seat (120) is also provided with an annular groove (122), which is located at the bottom of the first internal thread groove (121). The inner diameter of the annular groove (122) is larger than the inner diameter of the first internal thread groove (121). The flange (131) abuts against the annular groove (122), and the annular groove (122) has a clearance space that allows the flange (131) to rotate.

9. A mounting base for a plug-in type sensor according to claim 8, characterized in that, The second sealing structure is a second sealing ring (220), which is located on the top of the flange (131). When the plug-in sensor is connected, the second sealing ring (220) can be abutted against the top of the flange (131).

10. A sensor assembly / disassembly method, characterized in that, Includes a mounting base for a plug-in sensor as described in claim 9; The method includes: When installing the plug-in sensor; The valve connecting seat (140) is threaded to the valve (400) through the external thread, and the first sealing ring (210) is placed in the limiting groove (142) through the second internal thread groove (141). Insert the loose seat (130) into the connecting seat (120) from top to bottom, and abut the flange (131) against the annular groove (122). Place the second sealing ring (220) on the top of the flange (131). The loose seat (130) is pre-tightly connected to the second internal thread groove (141) of the valve connecting seat (140). Insert the detection rod (310) of the plug-in sensor into the insertion channel (110) and seal it against the first sealing ring (210). After the first sealing ring (210) seals, open the switch channel of the valve (400) so that the detection rod (310) can be further inserted and the plug-in sensor is pre-tightly connected to the first internal thread groove (121) of the connecting seat (120). Tighten the loose seat (130) to the valve connecting seat (140). The bottom of the loose seat (130) can squeeze the first sealing ring (210) so that the first sealing ring (210) can deform and seal. Tighten the connecting seat (120) to the plug-in sensor so that the second sealing ring (220) can be deformed and sealed under pressure. When disassembling the plug-in sensor; Rotate the connector (120) to disengage the plug-in sensor from the first internal thread groove (121), and pull the detection rod (310) out to the switch channel of the valve (400) so that the switch channel of the valve (400) can be closed, so as to further pull out the plug-in sensor.

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