Sealed electrical feedthrough

Abstract

Embodiments of the present disclosure relate to sealing an electrical feedthrough. The invention provides an explosion-proof electric connector. The explosion-proof electric connector comprises a cylindrical body, a sealing ring, a locking element and a printed circuit board (PCB), the cylindrical body includes a first end, a second end opposite the first end, an inner cavity extending from the first end to the second end, a shoulder at the second end and protruding radially outward with respect to the central axis, and a threaded surface. A sealing ring is disposed around the cylindrical body between the threaded surface and the shoulder of the cylindrical body. A locking element is arranged at the first end. The PCB is disposed in the inner cavity of the cylindrical body.

Description

Technical Field

[0001] The present invention relates to an electrical feedthrough that forms a seal between chambers, and to a system and method for providing such a sealed electrical feedthrough. Background Technology

[0002] In systems and equipment containing hazardous materials such as flammable or combustible liquids and / or gases, sealed feedways are required. These sealed feedways prevent leakage of hazardous materials. However, ideally, such sealed feedways should not only be configured to prevent leakage at nominal pressure but also to prevent hazardous materials from passing through the sealed feedway when it experiences a sudden pressure increase. For example, such a pressure increase may occur when a hazardous material burns and causes an explosion within a chamber sealed by the feedway. Therefore, sealed feedways are employed between at least one chamber containing hazardous materials.

[0003] Sealed feeders are also known to include electrical connections between sealed chambers, allowing electrical signals to be transmitted through the joint without compromising the seal. To achieve this, wires typically pass through the joint and are integrated into it via a sealing material such as resin. Ensuring proper sealing of all gaps between and around the wires often requires considerable manual labor. Manually filling feeder systems with resin can be both difficult and tedious, especially for feeder systems located in confined and / or inaccessible spaces or exposed to potentially unsafe conditions for workers.

[0004] In view of the foregoing, what is needed is an improved sealed electrical feedthrough and its implementation method. Summary of the Invention

[0005] This invention provides an explosion-proof electrical connector, comprising a cylindrical body, a sealing ring, a locking element, and a printed circuit board (PCB). The cylindrical body includes a first end, a second end opposite to the first end, an inner cavity extending from the first end to the second end, a shoulder projecting radially outward relative to a central axis at the second end, and a threaded surface. The sealing ring is disposed around the cylindrical body between the threaded surface and the shoulder of the cylindrical body. The locking element is disposed at the first end. The PCB is disposed within the inner cavity of the cylindrical body. Attached Figure Description

[0006] Figure 1 The diagram illustrates a perspective view of a sealed electrical feedthrough;

[0007] Figure 2 The diagram shows a cross-sectional side view of the sealed electrical feedthrough;

[0008] Figure 3 The illustration shows a perspective view of the first end or top of the sealed electrical feedthrough;

[0009] Figure 4The diagram illustrates a top view of the first end or top of the sealed electrical feedthrough; and

[0010] Figure 5 The illustration shows a bottom view of the second or bottom end of the sealed electrical feeder. Detailed Implementation

[0011] Embodiments of this disclosure provide an improved hermetically sealed electrical feedthrough that is not only explosion-proof but also provides electrical signal feedthrough via a printed circuit board (PCB). The hermetically sealed electrical feedthrough is configured to be disposed between two chambers and integrated into the wall of a housing between the two chambers. The PCB of the hermetically sealed electrical feedthrough is pre-configured with explosion-proof properties, such as a resin coating, and is pre-arranged within the cylindrical body of the hermetically sealed electrical feedthrough. These features allow the hermetically sealed electrical feedthrough to be assembled prior to installation, thereby significantly reducing installation difficulty and eliminating the need for additional sealing materials within the hermetically sealed electrical feedthrough. Furthermore, since the PCB replaces the wires used for electrical feedthrough in conventional solutions, there is no need to arrange and manipulate wires within the hermetically sealed electrical feedthrough.

[0012] The sealed electrical feeder may include a threaded surface configured to engage with a corresponding thread in the housing. This allows the sealed electrical feeder to be easily arranged in the housing by rotating it according to the thread configuration. The total length of the threads of the sealed electrical feeder and the housing is configured to ensure that the threaded engagement between the sealed electrical feeder and the housing is strong enough to withstand pressure surges up to a threshold pressure within one of the chambers. The threshold pressure can, for example, be up to 1,000 psi.

[0013] Furthermore, the threads of the sealing electrical feeder and the housing can be configured to provide additional rotation of the sealing electrical feeder beyond the thread engagement depth that provides sufficient engagement to withstand the threshold pressure. The sealing electrical feeder can then be rotated in the reverse direction to slightly disengage the thread engagement, thereby allowing the sealing electrical feeder to be positioned in a predictable rotational location while maintaining its blast resistance (e.g., resistance up to the threshold pressure).

[0014] Predictable rotational position is provided by including a locking element on the sealed electrical feeder, the locking element having a first locking tab received in a groove in the cylindrical body. Thus, the locking element can be attached to the cylindrical body of the sealed electrical feeder in a predictable orientation (e.g., a consistent orientation on each discrete sealed electrical feeder). The locking element includes a protruding tab (also referred to herein as a second locking tab) configured to be received in a groove within the housing. The locking element, and therefore the entire sealed electrical feeder, can be secured within the housing in a known rotational orientation. This process, referred to as “clock control,” reduces complex manual labor during installation, thereby reducing the training requirements for installers. Furthermore, since the known rotational orientation also provides sufficient threaded engagement of the sealed electrical feeder within the housing, thus providing the required explosion-proof performance, the sealing performance of the sealed electrical feeder is guaranteed when installed into the housing. The locking element can be configured as a gasket surrounding part of the cylindrical body.

[0015] The sealed electrical feedthrough may also include electrical interfaces connected to both sides of the PCB (e.g., a first side facing the first chamber and a second side facing the second chamber). Electrical signals can be transmitted from either side of the PCB to achieve full electrical integration between the PCB and sensors and / or processors arranged in either (or both) chambers. Furthermore, the PCB acts as an electrical bridge connecting the electrical conductors in the two chambers.

[0016] Without departing from the spirit of this disclosure, the disclosed sealed electrical feeder can be installed under various conditions and / or applications. For example, the sealed electrical feeder can be installed in gas chromatographs in various applications, such as the extraction, refining, and / or processing of natural gas or oil. In such applications, the sealed electrical feeder must provide explosion protection in accordance with standards prescribed by regulations, industry organizations, and / or internal policies / procedures. Therefore, the sealed electrical feeder according to this disclosure safely monitors or receives chromatograph measurements through the feeder without compromising the explosion protection of the structure between chambers.

[0017] Figure 1The illustration shows a perspective view of a sealed electrical feeder 10 formed as an explosion-proof electrical connector. The sealed electrical feeder 10 includes a cylindrical body 12 having a central axis 14, a first end 16 at one axial end, and a second end 18 at the other axial end opposite to the first end 16. At least a portion of the outer periphery of the cylindrical body 12 includes a threaded surface 20. The threaded surface 20 is configured to engage with a corresponding threaded surface of a housing 30 that separates a first chamber 32 from a second chamber 34. The threaded engagement of the threaded surface 20 with the housing 30 allows the sealed electrical feeder 10 to be easily arranged within the housing 30 by rotating it about the central axis 14 in accordance with the thread direction of the threaded surface 20. For example, the sealed electrical feeder 10 can be easily arranged within the housing 30 by rotating the cylindrical body clockwise (according to…). Figure 1 When viewed from below along the central axis 14, the cylindrical body is inserted into the opening in the housing between the first chamber 32 and the second chamber 34, so that the cylindrical body 12 gradually moves axially into the housing 30 as it is rotated.

[0018] The cylindrical body 12 includes a shoulder 22 that extends radially outward relative to the central axis 14 and extends away from the outer periphery of the rest of the cylindrical body 12. The shoulder 22 is configured to abut against a shoulder stop 24, which is a surface of the housing 30 defining an opening with a diameter smaller than the outer diameter of the shoulder 22. Because the outer diameter of the shoulder 22 is larger than the opening formed by the shoulder stop 24, the shoulder stop 24 prevents the sealed electrical feed 10 from being rotated beyond a certain position along the threaded surface 20. In other words, the shoulder stop 24 limits the depth to which the sealed electrical feed 10 can be inserted into the housing 30. Furthermore, by providing physically perceptible and / or detectable rotational resistance during installation when the sealed electrical feed 10 is fully inserted, the shoulder stop 24 also advantageously provides simplified installation of the sealed electrical feed 10 within the housing 30. As a result, a person installing the sealed electrical feeder 10 in the housing 30 can easily detect when the sealed electrical feeder 10 has been inserted into the housing 30 to its maximum insertion depth. From this maximum insertion depth, the sealed electrical feeder 10 can be rotated in the opposite direction (i.e., in the opposite direction to the rotation initially used to engage the threads and insert the sealed electrical feeder 10 into the housing 30) to a known and predictable orientation, enabling successful and consistent installation according to applicable standards. For example, the sealed electrical feeder 10 is configured to comply with Underwriters Laboratories (UL) 1203 Explosion-proof, Dust-proof, and Flammable Electrical Equipment Standard, Canadian Standards Association (CSA) CS22.2 No. 30:20 Explosion-proof Equipment Standard, and International Electrotechnical Commission (IEC) 60079 Potentially Hazardous Area Equipment Standard. The hazardous location classification list is as follows: ATEX / IECEx–Ex db IIB+H2 T6 GB, North America–CID2 Grp BCD T6.

[0019] The sealed electrical feed 10 also includes a sealing ring 27 disposed between the threaded surface 20 and the shoulder 22. The sealing ring 27 is disposed around the outer periphery of the cylindrical body 12. When the sealed electrical feed 10 is installed in the housing 30, the sealing ring 27 is also disposed between the inner circumferential surface of the housing 30 and the outer periphery of the sealed electrical feed 10, thereby forming a seal between them and facilitating the sealing of the first chamber 32 relative to the second chamber 34 by means of the sealed electrical feed 10 as a whole. The seal between the first chamber 32 and the second chamber 34 is further formed by including a sealing material disposed within the cylindrical body 12. For example, epoxy resin can be used as a sealing material to fill the empty space between the first end 16 and the second end 18 within the inner cavity of the cylindrical body 12. The epoxy resin may include commercially available resins that meet the explosion-proof application requirements specified by a certification body. For example, the epoxy resin may be EP41S-6 sold by Master Bond Ltd., headquartered in Hackensack, New Jersey, or Henkel GmbH, headquartered in Düsseldorf, Germany. E-40EXP.

[0020] A locking element 26 is disposed at the first end 16 of the cylindrical body 12. The locking element 26 is attached to the cylindrical body 12 by a fastener 28, thereby allowing selective attachment to or removal from the cylindrical body 12. In the illustrated embodiment, the fastener 28 comprises a bolt. It will be readily understood that the fastener 28 may have a design similar to... Figure 1 The diagram illustrates different appearances and / or configurations of bolts. For example, fastener 28 may include bolts of various shapes, thread lengths, pitches, etc. Furthermore, fastener 28 may be embodied as screws, rivets, clips, studs, etc. Fastener 28 ensures that locking element 26 is rigidly attached to cylindrical body 12 with a known rotational orientation.

[0021] The PCB is arranged in the inner cavity of the cylindrical body 12 (as will be described below). Figure 2 (As shown in the diagram). Electrical interfaces for connecting to the PCB are also arranged at the first end 16 and the second end 18. Corresponding electrical interfaces for connecting to the PCB can be arranged in the first chamber 32 and the second chamber 34. The conductor arranged in the first chamber 32 can be connected to the PCB at the first end 16, while the conductor arranged in the second chamber 34 can be connected to the PCB at the second end 18.

[0022] Figure 2A cross-sectional side view of the sealed electrical feedthrough 10 is illustrated. The cylindrical body 12 has an inner cavity 40 in which a PCB 42 is disposed. The PCB 42 is rigidly fixed to the cylindrical body 12. For example, the PCB 42 can be rigidly fixed within the inner cavity 40 by means of a resin body 43 formed in a space around the PCB 42, representing the gap between the PCB 42 and the radial inner wall 45 of the cylindrical body 12. The PCB 42 can also be at least partially held in place within the cylindrical body 12 by a potting dam 47, which can be held in place by friction between the PCB 42 and the radial inner wall 45 of the cylindrical body 12. Specifically, the potting dam 47 can be sized to have a diameter or radial outer circumference slightly larger than the diameter or radial inner circumference of the inner cavity 40 of the cylindrical body 12, thereby generating a compressive force that not only holds the potting dam 47 in place but also causes the potting dam 47 to hold the PCB 42 in place. The potting dam 47 may be formed of silicone rubber and is configured to block resin 43 inserted into the inner cavity 40, thereby preventing resin 43 from flowing out of the inner cavity through the second end 18 when it is in a liquid state, and ensuring that resin 43 is cured throughout the inner cavity 40 in a manner defined by the potting dam 47.

[0023] Figure 2 The illustrated embodiment can be produced by first inserting the PCB 42 into the potting dam 47. Then, the PCB 42 and the potting dam 47 are inserted together into the cylindrical body 12 via the second end 18. This allows the PCB 42 to remain in place while the resin 43 is potted or injected into the cavity 40. Once the resin 43 has hardened, the PCB 42 is rigidly fixed within the cylindrical body 12. It will be readily understood that other structures can be implemented to fix the PCB 42 within the cavity 40 of the cylindrical body 12 without departing from the spirit of this disclosure. For example, other fasteners such as screws, bolts, brackets, rivets, solder, or solder can be used to fix the PCB 42 to the cavity 40 of the cylindrical body 12. However, in any case, the voids within the cavity 40 are filled with resin 43 so that the first chamber 32 and the second chamber 34 are completely sealed to each other when the sealed electrical feed 10 is arranged within the housing 30.

[0024] PCB 42 may be pre-configured with explosion-proof properties before it is attached to cylindrical body 12. PCB 42 may be checked for cleanliness before installation to ensure compliance with explosion-proof standards and may include high-quality and / or graded materials. For example, PCB 42 may include FR4 grade materials as specified by the National Electrical Manufacturers Association (NEMA). Specifically, PCB 42 may include FR4 A1 or A2 grade materials as specified by NEMA. PCB 42 may include a glass fiber epoxy laminate. A first electrical interface 44 is connected to PCB 42 and is disposed at a first end 16 of the sealed electrical feed 10. A second electrical interface 46 is disposed at a second end 18 of the sealed electrical feed 10. Thus, the first and second electrical interfaces 44, 46 enable PCB 42 to electrically bridge conductors within the two chambers 32, 34. In an exemplary application, the housing may be part of a gas chromatograph, and the sensor may be disposed within the first chamber 32—or electrically connected to conductors within the first chamber 32. Therefore, the hermetically sealed electrical feedthrough 10 allows signals from sensors disposed within the first chamber 32 to be received and processed either by the PCB 42 of the hermetically sealed electrical feedthrough 10 itself or by a processor disposed outside the first chamber 32 (e.g., within or outside the second chamber 34 via an electrical connection to the second chamber). The electrical feedthrough provided by the hermetically sealed electrical feedthrough 10 is achieved without compromising explosion-proof performance.

[0025] Figure 3 The illustration shows a perspective view of the first end 16 (also referred to herein as the top) of the sealed electrical feedthrough 10, while Figure 4 The illustration shows a top view of this end (e.g., reference). Figure 1 Orientation of the sealed electrical feeder 10 (viewed from top to bottom). (e.g.) Figure 2 As illustrated, locking element 26 is arranged abutting against locking element surface 50. Locking element surface 50 includes an opening extending to the second end 18 of cylindrical body 12 and through the cylindrical body. Fastener 28 can be arranged in the opening to secure locking element 26 against locking element surface 50. First end 16 of cylindrical body 12 includes two recesses 52 that are radially opposite each other across an axial opening 41 of cylindrical body 12 leading to its inner cavity 40. Recesses 52 provide space for fastener 28. Cylindrical body 12 also includes a locking element recess 54 located at first end 16. Locking element recess 54 extends radially inward relative to the radially outer periphery of cylindrical body 12 at first end 16. Locking element recess 54 is configured to receive a correspondingly shaped first locking tab 56 of locking element 26.

[0026] In the illustrated embodiment, the locking element recess 54 and the first locking tab 56 have rectangular shapes, and the first locking tab 56 extends radially inward toward the central axis of the cylindrical body 12. The first locking tab 56 is configured to engage in a form-fitting manner with the locking element recess 54. Because the first locking tab 56 is arranged in the locking element recess 54, the locking element 26 is rotationally constrained relative to the axis of the cylindrical body. In other words, the locking element 26 is prevented from moving relative to the cylindrical body 12 in the circumferential direction about the central axis. The fastener 28 further axially constrains the locking element 26, engaging with the locking element recess 54 and thus completely securing and constraining the locking element 26 to the cylindrical body 12, such that there is no relative movement between them. It will be readily understood that the specific shapes of the first locking tab 56 and the locking element recess 54 may vary without departing from the spirit of this disclosure. Figure 4 The shapes shown in the figure may vary, as long as they can provide rotational fixation of the locking element 26 relative to the cylindrical body 12.

[0027] The locking element 26 also includes a second locking tab 58, which projects radially outward and axially relative to the central axis of the cylinder 12, thus forming a right angle. When the locking element 26 is secured to the cylinder 12, the axial projection of the second locking tab 58 faces the second end 18 of the cylinder 12. A locking tab groove 60 is arranged on the locking element surface 50 within the housing 30. The locking tab groove 60 is configured to receive the second locking tab 58, thereby constraining the movement of the locking element 26. As a result, when the locking element 26 is secured to the cylinder 12, the engagement of the second locking tab 58 in the locking tab groove 60 prevents the cylinder 12 from rotating in any direction within the threads of the housing 30, thereby preventing the sealed electrical feed 10 from moving into or out of the housing 30. The combination of the cylinder 12, the locking element 26, the fastener 28, and the locking tab groove 60 thus ensures that the sealed electrical feed 10 can be rigidly inserted into the housing 30.

[0028] like Figure 4 As illustrated, a first electrical interface 44 can be connected to a PCB 42 and provides electrical connection to a corresponding interface via multiple pins. For example, in the illustrated embodiment, the first electrical interface 44 includes a 14-pin female connector. To reduce costs and provide broad compatibility with other commercially available electronic products with corresponding connectors, the first electrical interface 44 can be a standardized and / or commercially available connector. It will be readily understood that the first electrical interface 44 may include more or fewer pins without departing from the spirit of this disclosure, and may be a male connector, a female connector, or a combination of both. The first electrical connector 44 can be physically and electrically connected to the PCB 42 via pins (e.g., straight pins or right-angle pins) and / or soldering.

[0029] Figure 5 The diagram shows a bottom view of the second end 18 of the sealed electrical feedthrough 10. The second end 18 includes an opening 62 leading to the interior cavity of the cylindrical body 12. An electrical interface is disposed at the second end 18 and connects to a PCB 42 disposed within the interior cavity of the cylindrical body 12. Although Figure 5 The illustration shows a second end 18 with a hexagonal periphery; however, it will be readily understood that the second end 18 can have various shapes and / or sizes without departing from the spirit of this disclosure. For example, the periphery of the second end 18 can be any polygonal shape, or it can be circular or irregular. The first end 16 of the cylindrical body 12 has a specific shape and various features, specifically configured to rigidly secure the sealed electrical feed 10 within the housing 30. In contrast, the purpose of the second end 18 is primarily to provide an opening through which an electrical connection from the second chamber 34 to the PCB 42 can be established.

[0030] Embodiments of this disclosure also relate to a method for providing an explosion-proof electrical connector between a first chamber 32 and a second chamber 34. For example... Figure 1 and Figure 2 As illustrated, the cylindrical body 12 is provided with a threaded surface 20 and a shoulder 22 that projects radially outward relative to the central axis 14. A PCB is disposed within the cylindrical body 12, and a sealing ring 27 is disposed around the circumference of the cylindrical body 12. The cylindrical body 12 is inserted into the threaded hole of the housing 30 located between the first chamber 32 and the second chamber 34 by rotating the cylindrical body 12 so that the threaded surface 20 engages with the threaded hole. The cylindrical body 12 rotates in a first rotational direction (e.g., due to the threaded configuration of the cylindrical body 12 and the threaded hole, resulting in a rotational orientation in which the cylindrical body 12 is inserted deeper into the housing 30) until the shoulder 22 of the cylindrical body 12 contacts a shoulder stop 24 formed at one end of the threaded hole.

[0031] The method may further include securing the locking element 26 to the cylindrical body 12 at a position opposite the shoulder 22, such that the locking element 26 is rotatably secured to the cylindrical body 12, or in other words, such that the locking element 26 cannot rotate relative to the cylindrical body 12. The locking element 26 may include a locking tab (e.g., Figure 3 and Figure 4 The second locking tab 58 is configured to engage with the locking tab recess 60 in the first chamber 32 (or in the second chamber 34 if the housing 30 is designed differently). The cylindrical body 12 rotates in a second rotational direction opposite to the first rotational direction (e.g., due to the threaded configuration of the cylindrical body 12 and the threaded hole, resulting in a rotational orientation in which the cylindrical body 12 is pulled out of the housing 30) until the locking tab is inserted into the locking tab recess 60.

[0032] The method may further include electrically connecting a first conductor in the first chamber 32 to the PCB 42 of the sealed electrical feed 10, and connecting a second conductor in the second chamber 34 to the PCB 42. An input signal can be received from one of the first and second conductors to the PCB 42. An output signal can be transmitted via the PCB 42 to the other conductor of the first and second conductors based on the received input signal.

[0033] All references cited in this article, including publications, patent applications and patents, are incorporated herein by reference as if each reference were individually and specifically indicated to be incorporated herein by reference and fully elaborated.

[0034] In the context of describing the invention (especially in the context of the following claims), the terms “a,” “an,” “the,” and “at least one,” and similar designations, should be interpreted to cover both singular and plural forms, unless otherwise stated herein or the context clearly contradicts them. The use of the term “at least one” followed by a list of one or more items (e.g., “at least one of A and B”) should be interpreted to mean one selected from the listed items (A or B), or any combination of two or more of the listed items (A and B), unless otherwise stated herein or the context clearly contradicts them. Unless otherwise stated, the terms “comprising,” “having,” “including,” and “containing” should be interpreted as open-ended terms (i.e., meaning “including but not limited to”). Unless otherwise stated herein, the enumeration of numerical ranges herein is intended only as a method of abbreviation for individually referring to each individual value falling within the range, and each individual value is incorporated into the specification as if it were individually enumerated herein. All methods described herein may be performed in any suitable order, unless otherwise stated herein or the context clearly contradicts them. Unless otherwise stated, the use of any and all examples or exemplary language (such as "such as") provided herein is intended only to better illustrate the invention and does not limit the scope of the invention. No language in the specification should be construed as indicating that any unclaimed element is essential to the practice of the invention.

[0035] This document describes preferred embodiments of the invention, including the best mode known to the inventors for carrying out the invention. Various variations of these preferred embodiments will be apparent to those skilled in the art upon reading the foregoing description. The inventors expect those skilled in the art to employ such variations as appropriate, and the inventors wish to practice the invention in ways other than those specifically described herein. Therefore, the invention includes all modifications and equivalents of the subject matter set forth in the appended claims as permitted by applicable law. Furthermore, the invention covers any combination of the foregoing elements in all possible variations, unless otherwise stated herein or the context clearly contradicts it.

Claims

1. An explosion-proof electrical connector, comprising: Columnar solids, including: First end, The second end, opposite to the first end, The inner cavity extending from the first end to the second end, At the second end, a shoulder protrudes radially outward relative to the central axis, and Threaded surface; A sealing ring is arranged around the cylindrical body between the threaded surface and the shoulder of the cylindrical body; A locking element disposed at the first end; and A printed circuit board (PCB) is arranged in the inner cavity of the cylindrical body.

2. The connector of claim 1, further comprising a first electrical interface and a second electrical interface respectively connected to the PCB, wherein the first electrical interface is configured to electrically connect the PCB to one or more first conductors located at the first end of the cylinder, and wherein the second electrical interface is configured to electrically connect the PCB to one or more second conductors located at the second end of the cylinder.

3. The connector of claim 1, wherein the first end of the cylindrical body includes a groove extending radially inward toward the central axis, wherein the first end of the cylindrical body includes an opening disposed in each groove of the groove, each opening extending toward the second end of the cylindrical body, and wherein each opening is configured to receive a fastener such that the locking element is secured against the cylindrical body by the fastener.

4. The connector of claim 1, wherein the first end of the cylindrical body includes a locking element groove extending radially inward toward the central axis, and wherein the locking element includes a first locking tab extending radially inward, the first locking tab of the locking element being configured to engage in the locking element groove and thereby preventing the locking element from moving relative to the cylindrical body in the circumferential direction.

5. The connector of claim 1, wherein the locking element includes a second locking tab that projects axially and radially, such that when the locking element is disposed at the first end of the cylindrical body, the second locking tab extends toward the second end of the cylindrical body.

6. An explosion-proof component, comprising: A housing having a first chamber, a second chamber, and a hole between the first chamber and the second chamber, the hole having a first threaded surface; Columnar solids, including: First end, The second end, opposite to the first end, The inner cavity extending from the first end to the second end, At the second end, a shoulder protrudes radially outward relative to the central axis, and Second thread surface; A sealing ring is arranged around the cylindrical body between the second threaded surface and the shoulder of the cylindrical body; A locking element disposed at the first end; and A printed circuit board (PCB) is arranged in the inner cavity of the cylindrical body. The cylindrical body is arranged within the hole such that the first threaded surface engages with the second threaded surface, and The sealing ring is arranged between the cylindrical body and the hole, thereby forming a seal between the cylindrical body and the hole.

7. The component of claim 6, wherein the shoulder of the cylindrical body has an outer diameter larger than the inner diameter of the hole, such that the cylindrical body cannot be inserted into the hole beyond the shoulder.

8. The assembly of claim 6, wherein the locking element comprises axially and radially projecting locking tabs such that when the locking element is disposed at the first end of the cylindrical body, the locking tabs extend toward the second end of the cylindrical body.

9. The component of claim 8, wherein the housing includes a locking tab recess in the first chamber, the locking tab recess being configured to receive the locking tab of the locking element.

10. The assembly of claim 9, wherein the locking element is fixed against the cylindrical body such that the locking element is rotationally constrained relative to the cylindrical body.

11. The component of claim 6, further comprising a first electrical interface and a second electrical interface respectively connected to the PCB, wherein the first electrical interface is configured to electrically connect the PCB to one or more first conductors located at the first end of the cylinder, and wherein the second electrical interface is configured to electrically connect the PCB to one or more second conductors located at the second end of the cylinder.

12. The component of claim 11, wherein the first conductor is disposed in the first cavity, wherein the second conductor is disposed in the second cavity, and wherein the PCB is configured to electrically bridge the first cavity and the second cavity.

13. The component of claim 6 further includes a sealing body arranged within the cavity of the cylindrical body and surrounding the PCB.

14. The component of claim 13, wherein the component is configured to prevent flames generated by an explosion in one of the first chamber and the second chamber from spreading to the other of the first chamber and the second chamber, and the pressure difference between the first chamber and the second chamber is at least 1000 psi.

15. A method for providing an explosion-proof electrical connector between a first chamber and a second chamber, the method comprising: Provides a cylindrical body having a threaded surface and a radially outwardly projecting shoulder, a printed circuit board (PCB) disposed within the cylindrical body, and a sealing ring disposed around the circumference of the cylindrical body; By rotating the cylindrical body so that the threaded surface of the cylindrical body engages with the threaded hole, the cylindrical body is arranged in the threaded hole between the first chamber and the second chamber; as well as The cylindrical body is rotated in the first rotational direction until the shoulder of the cylindrical body contacts the end stop formed at one end of the threaded hole.

16. The method of claim 15, further comprising: The locking element is fixed to the cylindrical body opposite the shoulder, such that the locking element is rotatably fixed to the cylindrical body, wherein the locking element includes a locking tab configured to engage a locking groove in one of the first chamber and the second chamber; as well as Rotate the cylindrical body in a second rotational direction opposite to the first rotational direction until the locking tab is inserted into the locking groove.

17. The method of claim 15, further comprising electrically connecting a first conductor in the first chamber to the PCB and electrically connecting a second conductor in the second chamber to the PCB.

18. The method of claim 17, further comprising receiving an input signal from one of the first conductor and the second conductor to the PCB, and transmitting an output signal based on the received input signal to the other conductor of the first conductor and the second conductor via the PCB.

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