One-hole multi-line sealing device

Abstract

The invention provides a one-hole multi-line sealing device, which comprises a sealing base, a first sealing ring and a sealing gland, and is characterized in that the sealing base comprises a base main body, a mounting part arranged at the top of the base main body, and a first through hole simultaneously penetrating through the base main body and the mounting part; a plurality of first accommodating grooves which are uniformly distributed at intervals in the circumferential direction of the first through hole are formed in the mounting part, are used for accommodating measuring point leads, extend in the radial direction of the first through hole and are communicated with the first through hole and the outer side of the mounting part; a plurality of first annular grooves which are concentric with the first through holes are further formed in the mounting part, and a first sealing ring is embedded in each first annular groove; and the mounting part is detachably connected with the sealing gland. According to the one-hole multi-line sealing device structure, the difficulty that a traditional sealing structure cannot seal multiple measuring points of different specifications in a small space can be effectively solved, meanwhile, the sealing device is compact and simple in structure, and the production and use cost can be reduced.

Description

Technical Field

[0001] The invention relates to the technical field of experimental equipment, and in particular to a one-hole multi-wire sealing device. Background Art

[0002] At present, in the relevant experimental field, some test experiments need to be carried out frequently to verify the rationality of the relevant theoretical design. In these tests, some problems are often encountered. The most common problems include that when testing and monitoring pressure and temperature, the hardware of the equipment needs to detect deep into the model medium through one or more measuring point leads. These measuring point leads, such as pressure pipelines, involve a series of sealing problems when entering the container. When sealing pressure and temperature probes in conventional containers, only a single sensor is often sealed. When the research needs increase, for example, when designers need to install multiple measuring point leads in a very small area, the traditional sealing structure cannot meet the needs.

[0003] At present, there are several types of sealing forms for measuring point sealing structures: 1. Single-hole single-wire sealing, which is often used in environments with a small number of measuring points, high sealing requirements, and small space restrictions; 2. Traditional single-hole multi-wire sealing, which is often used in environments with a large number of measuring points and large space restrictions. Both designs have their own advantages and disadvantages. The single-hole single-wire sealing structure occupies a large outer surface area of ​​the shell. The traditional single-hole multi-wire sealing can only be applied to the same type of measuring point sealing, and cannot meet the conditions for multiple types of measuring point sealing. Therefore, it is of great significance to design a measuring point sealing structure device with good sealing effect and capable of sealing multiple types of measuring points at the same time.

[0004] The Chinese invention patent application "One-hole multi-wire sealing device and method for high-pressure probe used in heavy oil thermal recovery experiment" with application publication number CN110410050A proposes a one-hole multi-wire sealing device and method for high-pressure probe used in heavy oil thermal recovery experiment, which can withstand temperatures up to 1000°C. Through higher temperature-pressure sealing technology, it effectively expands deep research on formation depth, but is only applicable to the same type of measuring point seals. The Chinese utility model patent "A labyrinth-type steam turbine bearing temperature measuring point seal" with authorization announcement number CN214999409U proposes a labyrinth-type steam turbine bearing temperature measuring point seal, including a mounting base, the top of the mounting base is provided with an elastic extrusion sealing structure, and the extrusion sealing structure and the mounting base are provided with measuring point leads; the measuring point leads are passed through the extrusion sealing structure and the mounting base, and the measuring point leads are compressed and compacted by the extrusion sealing structure, and the oil can only penetrate under the extrusion sealing structure, thereby insulating the oil leakage problem, but this design cannot meet the requirements of multi-wire simultaneous lead sealing. Summary of the invention

[0005] The object of the present invention is to provide a one-hole multi-wire sealing device, which can meet the demand for sealing multiple different types of measuring point leads in a relatively small space.

[0006] The present invention provides a one-hole multi-wire sealing device, comprising a sealing base, a first sealing ring and a sealing cover, wherein the sealing base comprises a base body, a mounting portion arranged on the top of the base body, and a first through hole that simultaneously penetrates the base body and the mounting portion; the mounting portion is provided with a plurality of first accommodating grooves evenly spaced along the circumference of the first through hole, the first accommodating grooves being used to accommodate measuring point leads, extending radially along the first through hole and connecting the first through hole and the outside of the mounting portion; the mounting portion is also provided with a plurality of first annular grooves concentrically arranged with the first through hole, each of the first annular grooves being embedded with a first sealing ring; the mounting portion and the sealing cover are detachably connected.

[0007] Preferably, a slot for installing the base body is provided on the base body.

[0008] Preferably, an NPT thread for sealing connection with a test device is also provided on the outer wall of the base body.

[0009] Preferably, two first annular grooves are formed on the mounting portion.

[0010] Preferably, the depths of the plurality of first receiving grooves are the same or different.

[0011] Preferably, it also includes a plurality of line dividing pressure plates and a second sealing ring arranged between the mounting portion and the sealing cover, the line dividing pressure plate having a second through hole connected to the first through hole, a side surface of the line dividing pressure plate close to the sealing cover having a plurality of second accommodating grooves evenly spaced along the circumference of the second through hole, and a plurality of second annular grooves concentrically arranged with the second through hole, the second accommodating grooves extending radially along the second through hole for connecting the second through hole and the outer side of the line dividing pressure plate; a second sealing ring is embedded in each second annular groove.

[0012] Preferably, two second annular grooves are formed on the line dividing pressure plate.

[0013] Preferably, the depths of the plurality of second receiving grooves are the same or different.

[0014] Preferably, the mounting portion is further provided with a plurality of first connection holes, and the first connection holes are detachably connected to second connection holes provided on the sealing gland.

[0015] The one-hole multi-wire sealing device structure proposed by the present invention can effectively solve the difficulty of the traditional sealing structure in sealing multiple measuring points of different specifications in a small space. At the same time, the sealing device has a compact and simple structure, which can reduce the production and use costs. Its benefits are:

[0016] 1. It has a sealing base and several branching pressure plates. There are multiple receiving grooves on the sealing base and the branching pressure plates. The size of the receiving groove can be customized according to the specific lead specifications of the measuring point, which can meet the sealing requirements of multiple different types of measuring points at the same time;

[0017] 2. Annular grooves are provided on the surfaces of the sealing base and the branching pressure plate, and sealing rings are installed in the annular grooves. This sealing form increases the reliability of the seal, and the structural form of the annular grooves makes the leads of each measuring point independent of each other, which is convenient for sealing and corresponding marking. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a cross-sectional view of a one-hole multi-wire sealing device of the present invention;

[0019] Figure 2 is an exploded view of the one-hole multi-wire sealing device of the present invention;

[0020] Figure 3 is a three-dimensional diagram of the sealing base;

[0021] Figure 4 is a top view of the sealing gland;

[0022] Figure 5 It is a three-dimensional diagram of the line dividing plate.

[0023] Component number description:

[0024] 1 Sealing base

[0025] 11 Base body

[0026] 111 Card slot

[0027] 12 Installation

[0028] 121 first storage tank

[0029] 122 First annular groove

[0030] 123 First connection hole

[0031] 13 First through hole

[0032] 2 First sealing ring

[0033] 3 Sealing gland

[0034] 31 Second connection hole

[0035] 4-wire clamp

[0036] 41 Second storage tank

[0037] 42 Second annular groove

[0038] 43 Third connection hole

[0039] 44 Second through hole

[0040] 5 Second sealing ring DETAILED DESCRIPTION

[0041] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings. These embodiments are only used to illustrate the present invention, but not to limit the present invention.

[0042] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0043] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] Furthermore, in the description of the present invention, unless otherwise specified, “plurality” means two or more.

[0045] Figure 1 FIG. 1 is a cross-sectional view of a one-hole multi-wire sealing device according to the present invention. In the following description, Figure 1 The attached figure in the figure is used as a reference for the direction. Figure 1 In the diagram, the upward direction along the view paper is the upward direction, the downward direction along the view paper is the downward direction, and the direction perpendicular to the up and down directions is defined as the horizontal direction.

[0046] like Figure 1-4 As shown, the present invention provides a one-hole multi-wire sealing device, which includes a sealing base 1, a first sealing ring 2 and a sealing gland 3.

[0047] The sealing base 1 includes a base body 11, a mounting portion 12 disposed on the top of the base body 11, and a first through hole 13 that penetrates both the base body 11 and the mounting portion 12. The base body 11 is specifically cylindrical, and two slots 111 are disposed on its outer wall. In addition, an NPT thread for sealingly connecting with a test device is also disposed on the outer wall of the base body 11.

[0048] The top surface of the mounting portion 12 is provided with a plurality of first receiving grooves 121 evenly spaced along the circumference of the first through hole 13, each of which extends radially along the first through hole 13 and connects the first through hole 13 and the outside of the mounting portion 12; the mounting portion 12 is also provided with a plurality of first annular grooves 122 concentrically arranged with the first through hole 13, the first annular grooves 122 are connected with the first receiving grooves 121, and a first sealing ring 2 is embedded in each first annular groove 122. The mounting portion 12 is detachably connected to the sealing gland 3.

[0049] The detachable connection between the mounting portion 12 and the sealing gland 3 is not limited, and can be connected by a buckle or a slot or a bolt. Specifically, the outer periphery of the mounting portion 12 is further provided with a plurality of first connection holes 123, and the first connection holes 123 are detachably connected to the second connection holes 31 provided on the outer periphery of the sealing gland 3. Specifically, the number of the first connection holes 123 and the second connection holes 31 is the same, and the two are provided in a one-to-one correspondence.

[0050] The working principle of the present invention is as follows:

[0051] When using the sealing device to seal multiple measuring points, first lead multiple measuring point leads from the first through hole 13, then clamp the slot 111 on the sealing base 1 with a torque wrench, and fix the sealing base 1 on the corresponding shell or connector. Straighten the multiple measuring point leads, then embed a measuring point lead in each first receiving groove 121, and then install a first seal 2 in each first annular groove 122, at which time the first seal 2 is located above the measuring point lead. Finally, insert multiple bolts into the first connecting hole 123 and the second connecting hole 31 respectively, so that the sealing cover 3 is tightly covered on the mounting part 12. During the tightening of the bolts, the first seal 2 continuously squeezes the measuring point lead to block the gap between the measuring point lead and the first receiving groove 121, thereby achieving sealing of multiple measuring points.

[0052] Those skilled in the art can select the specific number and size of the first accommodating grooves 121 and the first annular grooves 122 as needed. The depths of the multiple first accommodating grooves 121 can be the same or different, and can be customized according to the type of measuring point leads, so as to achieve the installation and sealing of various different types of measuring points. When multiple first annular grooves 122 are provided on the mounting portion 12, the centers of the multiple first annular grooves 122 are in the same position, but their respective radii are different. The number of first sealing members 2 is the same as the number of first annular grooves 122, and the two are arranged in a one-to-one correspondence. The material of the first sealing member 2 can be selected according to the use environment, such as rubber. Specifically, two first annular grooves 122 are provided on the mounting portion 12.

[0053] In order to maximize the use of space, the sealing device provided by the present invention can also be a multi-layer structure in addition to the above-mentioned single-layer structure. Figure 1-2 and Figure 5 As shown, in a specific embodiment of the present invention, it also includes a plurality of line dividing plates 4 and a second sealing ring 5 arranged between the mounting portion 12 and the sealing gland 3. The line dividing plate 4 is provided with a second through hole 44 connected to the first through hole 13, and a side surface (i.e., the top surface) of the line dividing plate 4 close to the sealing gland 3 is provided with a plurality of second accommodating grooves 41 evenly spaced along the circumference of the second through hole 44, and a plurality of second annular grooves 42 concentrically arranged with the second through hole 44. Among them, the second accommodating grooves 41 extend along the radial direction of the second through hole 44, and are used to connect the second through hole 44 and the outer side of the line dividing plate 4. A second sealing ring 5 is embedded in each second annular groove 42. Furthermore, a third connecting hole 43 is also provided on the outer periphery of the line dividing plate 4, and the third connecting hole 43 is respectively connected to the first connecting hole 123 and the second connecting hole 31.

[0054] The working principle of the above multi-layer structure is as follows:

[0055] When using the sealing device to seal multiple measuring points, first lead multiple first measuring point leads from the first through hole 13, then clamp the slot 111 on the sealing base 1 with a torque wrench, and fix the sealing base 1 on the corresponding shell or connector. Straighten the multiple first measuring point leads, and then install a first seal 2 in each first annular groove 122, at which time the first seal 2 is located above the first measuring point leads. Place the line dividing plate 4 on the mounting portion 12, lead multiple second measuring point leads from the second through hole 44 and the first through hole 13, then embed a second measuring point lead in each second accommodating groove 41, and then install a second seal 5 in each second annular groove 42, at which time the second seal 5 is located above the second measuring point leads. Finally, multiple bolts are inserted into the first connection hole 123, the third connection hole 43 and the second connection hole 31 in sequence, so that the sealing gland 3 is tightly covered on the line dividing plate 4, and the line dividing plate 4 is tightly covered on the mounting portion 12. During the process of bolt tightening, the first sealing member 2 continuously squeezes the first measuring point lead and blocks the gap between the first measuring point lead and the first receiving groove 121; the second sealing member 5 continuously squeezes the second measuring point lead and blocks the gap between the second measuring point lead and the second receiving groove 41. In addition to being able to seal and lead out different types of measuring points, the multi-layer sealing device occupies less space, so it can better meet the line outlet and sealing requirements of multiple measuring points in a smaller space.

[0056] Similarly, those skilled in the art can select the specific number and size of the second accommodating grooves 41 and the second annular grooves 42 as needed. The depths of the multiple second accommodating grooves 41 can be the same or different, and can be customized according to the type of measuring point leads, so as to achieve the installation and sealing of various different types of measuring points. When a plurality of second annular grooves 42 are provided on the branch line pressure plate 4, the centers of the plurality of second annular grooves 42 are in the same position, but their respective radii are different. The number of second sealing members 5 is the same as the number of second annular grooves 42, and the two are arranged in a one-to-one correspondence. The material of the second sealing member 5 can be selected according to the use environment, such as rubber. Specifically, two second annular grooves 42 are provided on the branch line pressure plate 4.

[0057] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A one-hole multi-wire sealing device, characterized in that: It includes a sealing base, a first sealing ring and a sealing cover, wherein the sealing base includes a base body, a mounting portion arranged on the top of the base body, and a first through hole that penetrates both the base body and the mounting portion; the mounting portion is provided with a plurality of first accommodating grooves evenly spaced along the circumference of the first through hole, the first accommodating grooves being used to accommodate measuring point leads, extending radially along the first through hole and connecting the first through hole and the outside of the mounting portion; the mounting portion is also provided with a plurality of first annular grooves concentrically arranged with the first through hole, each of which is embedded with a first sealing ring; the mounting portion and the sealing cover are detachably connected.

2. The one-hole multi-wire sealing device according to claim 1, characterized in that: The base body is provided with a slot for installing the base body.

3. The one-hole multi-wire sealing device according to claim 1, characterized in that: The outer wall of the base body is also provided with an NPT thread for sealing connection with the test equipment.

4. The one-hole multi-wire sealing device according to claim 1, characterized in that: The mounting portion is provided with two first annular grooves.

5. The one-hole multi-wire sealing device according to claim 1, characterized in that: The depths of the plurality of first receiving grooves are the same or different.

6. The one-hole multi-wire sealing device according to claim 1, characterized in that: It also includes a plurality of line dividing pressure plates and a second sealing ring arranged between the mounting portion and the sealing cover, the line dividing pressure plate having a second through hole connected to the first through hole, a side surface of the line dividing pressure plate close to the sealing cover having a plurality of second accommodating grooves evenly distributed along the circumference of the second through hole, and a plurality of second annular grooves concentrically arranged with the second through hole, the second accommodating grooves extending radially along the second through hole for connecting the second through hole and the outer side of the line dividing pressure plate; a second sealing ring is embedded in each second annular groove.

7. The one-hole multi-wire sealing device according to claim 6, characterized in that: The line dividing plate is provided with two second annular grooves.

8. The one-hole multi-wire sealing device according to claim 6, characterized in that: The depths of the plurality of second receiving grooves are the same or different.

9. The one-hole multi-wire sealing device according to claim 1, characterized in that: The mounting portion is also provided with a plurality of first connection holes, and the first connection holes are detachably connected to second connection holes provided on the sealing gland.

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