Sensor wire resistant to saturated steam test

Abstract

The invention relates to the technical field of sensor wire rods, in particular to a saturated steam test resistant sensor wire rod which comprises a wire body and a connector assembly, the connector assembly comprises an inner connector and an outer connector, the inner connector is arranged on the wire body in a sleeving mode and exposes a conductor, and the outer connector is connected to the inner connector in a sleeving mode and communicates with the conductor. A first sealing piece is arranged between the outer connector and the inner connector, and the first sealing piece is axially stressed to deform, so that a first sealing area is formed between the inner connector and the outer connector. In the invention, the wire body is firstly connected with the inner joint, meanwhile, the conductor is exposed and the preset length is reserved, then the outer joint and the inner joint are fixedly connected together, and in the connecting process, axial force is applied to the sealing element I, so that a stable sealing area I is formed between the inner joint and the outer joint; radial applied force acts on the second sealing piece to enable the second sealing piece to form a stable second sealing area between the inner connector and the line body, and the inner connector, the outer connector and the line body form a stable first sealing space under sealing of the first sealing area and the second sealing area.

Description

Technical Field

[0001] The present invention relates to the technical field of sensor wires, and particularly to a sensor wire resistant to saturated steam test. Background Art

[0002] Sensor wires resistant to saturated steam test (hereinafter referred to as wires) are widely used in various sensors that need to withstand high temperature, high humidity, and steam environments, and have performance characteristics such as high temperature resistance and chemical corrosion resistance.

[0003] At present, the wire body and the connector of the wire are generally processed by an integral molding process in the factory. The wire obtained by this process has high overall sealing performance and good quality. However, in some specific situations, such as being specially customized according to the on-site situation (wire length), ensuring the long-term stable operation of the equipment requires maintenance and replacement, and in the case of limited space or frequent disassembly and assembly, the wires processed by integral molding cannot fully meet the usage requirements. Therefore, wires with detachable connectors are needed. At present, the sealing of wires with detachable connectors is mainly achieved by axially compressing the sealing ring so that the sealing ring deforms radially and is hermetically connected to the outer wall of the wire body. However, the sealing effect is relatively low, and the stability and reliability of the wire during long-term use are relatively low. Moreover, the existing wires are usually blind plugs. Since the insertion amount of the conductor cannot be directly observed, it is difficult to accurately grasp the connection quality, which will then affect the stability and reliability of the wire usage. Summary of the Invention

[0004] The present invention provides a sensor wire resistant to saturated steam test to solve the problems of poor sealing effect, difficult accurate control of connection quality, and thus reduced stability and reliability of the wire during long-term use in related technologies.

[0005] The present invention provides a sensor wire resistant to saturated steam test. The sensor wire resistant to saturated steam test includes a wire body, and the wire body includes a conductor, a waterproof layer, an insulating layer, and a protective layer that are distributed in sequence from the inside to the outside; a connector assembly, the connector assembly includes an inner connector sleeved on the wire body and exposing the conductor, and an outer connector sleeved on the inner connector and communicating with the conductor. A first sealing member is arranged between the outer connector and the inner connector. The first sealing member deforms under axial force to form a first sealing area between the inner connector and the outer connector. A second sealing member is arranged between the inner connector and the wire body. The second sealing member deforms under radial force to form a second sealing area between the inner connector and the wire body. The inner connector, the outer connector, and the wire body form a first sealed space under the sealing of the first sealing area and the second sealing area. The exposed conductor and the connection between the exposed conductor and the outer connector are both located in the first sealed space; a pressing head for applying radial pressure to the second sealing member is arranged on the inner connector. The pressing head is located outside the first sealed space and the pressing head includes a plurality of arc-shaped pressing blocks and a control member for controlling the movement of the arc-shaped pressing blocks. The plurality of arc-shaped pressing blocks are slidably installed on the inner connector and radially move and are spliced under the control of the control member to form a pressing ring, and the pressing ring applies radial force to press the second sealing member.

[0006] In a possible implementation manner, a third seal is further arranged between the outer joint and the inner joint. The third seal deforms under axial force to form a third seal area between the inner joint and the outer joint. A fourth seal is further arranged between the inner joint and the wire body. The fourth seal deforms under axial force to form a fourth seal area between the inner joint and the wire body. The inner joint, the outer joint and the wire body form a second sealed space under the sealing of the third seal area and the fourth seal area. The first sealed space is located within the second sealed space, and the pressing head is located within the second sealed space.

[0007] In a possible implementation manner, the outer joint is threadedly connected to the inner joint. A fixed connection head is arranged on the inner joint. The fixed connection head includes a clamping block connected with a limiting member. The clamping blocks are distributed along the circumferential direction of the wire body and the clamping blocks are slidably mounted on the inner joint in the radial direction. A limiting area which is in wedge-shaped cooperation with the limiting member is arranged on the outer joint. During the threaded connection between the outer joint and the inner joint, the limiting area cooperates with the limiting member to automatically clamp and fix the wire body. And during the continuous clamping process of the clamping blocks, the wire body steadily feeds outwards with the inner joint under the action of the clamping force.

[0008] In a possible implementation manner, the control member includes a limiting ring and a plurality of limiting rods. The plurality of limiting rods are distributed along the circumferential direction of the limiting ring and the limiting rods are slidably mounted on the inner joint in the axial direction. The limiting rods control the axial sliding of the limiting ring under the limitation of the outer joint to make the arc-shaped pressing block move radially.

[0009] In a possible implementation manner, the conductor, the insulating layer and the protective layer at the end of the wire body are distributed in a stepped manner. The number of the second seals is two and they are respectively located between the protective layer and the inner joint and between the insulating layer and the inner joint, and two second seal areas are correspondingly formed. The second seal areas are distributed in sequence along the axial direction of the wire body.

[0010] In a possible implementation manner, an adsorption area is arranged between the two second seal areas.

[0011] In a possible implementation manner, the protective layer includes a braided layer, an aluminum foil layer and a sheath layer which are arranged in sequence from the inside to the outside.

[0012] One or more of the above technical solutions in the embodiments of the present invention have at least one of the following technical effects:

[0013] 1. In the present invention, the wire body is first connected to the inner joint. Meanwhile, the conductor is exposed and a preset length is reserved. Then, the outer joint is fixedly connected to the inner joint, which can accurately control the insertion amount of the conductor, improve the connection quality between the wire body and the joint assembly. During the connection process, axial force is applied to the first seal, causing it to form a stable first seal area between the inner joint and the outer joint. Radial force is applied to the second seal, causing it to form a stable second seal area between the inner joint and the wire body. The inner joint, the outer joint, and the wire body form a stable first sealed space under the sealing of the first seal area and the second seal area, fully improving the sealing performance at the connection between the wire body and the joint assembly, effectively improving the overall sealing performance of the wire, and further improving the stability and reliability of the wire during use.

[0014] 2. In the present invention, a second sealed space is provided outside the first sealed space. Through double-layer space sealing, the overall sealing effect of the wire is further improved.

[0015] 3. In the present invention, two density areas are formed between the wire body and the inner joint to further improve the sealing performance of the connection between the wire body and the inner joint. An adsorption area is provided between the two second seal areas to block the steam that breaks through the first second seal area from entering the second second seal area, further improving the stability and reliability of the wire during long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the fixed connection state between a part of the wire body and the joint assembly in the present invention.

[0017] Figure 2 is an exploded structural diagram of the joint assembly in the present invention.

[0018] Figure 3 is a partial cross-sectional view of the present invention.

[0019] Figure 4 is a schematic structural diagram of the arc-shaped pressing block in the present invention.

[0020] Figure 5 is a schematic structural diagram of the second seal, the arc-shaped pressing block, and the control member in the present invention.

[0021] Figure 6 is a schematic structural diagram of the wire body in the present invention.

[0022] In the figure: 1. wire body; 101. conductor; 102. waterproof layer; 103. insulating layer; 104. protective layer; 114. braided layer; 124. aluminum foil layer; 134. sheath layer; 2. joint assembly; 21. inner joint; 22. outer joint; 23. seal one; 24. seal two; 25. pressing head; 251. arc-shaped pressing block; 252. control part; 2521. limiting ring; 2522. limiting rod; 2523. unified connecting ring; 26. seal three; 27. seal four; 28. fixed connecting head; 281. limiting part; 282. clamping block; 283. limiting area; 29. adsorption area. Detailed implementation manners

[0023] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following will describe the detailed implementation manners of the present invention in conjunction with the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described below, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific implementation manners disclosed below.

[0024] Please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 6 , a wire for a sensor resistant to saturated steam test, comprising a wire body 1 and a joint assembly 2. The wire body 1 includes a conductor 101, a waterproof layer 102, an insulating layer 103 and a protective layer 104 which are distributed in sequence from the inside to the outside. An additional waterproof layer 102 is added between the conductor 101 and the insulating layer 103, which can effectively improve the waterproof effect of the wire. The joint assembly 2 includes an inner joint 21 sleeved on the wire body 1 and exposing the conductor 101, and an outer joint 22 sleeved on the inner joint 21 and communicating with the conductor 101; during the connection process of the wire body 1 and the joint assembly 2, the wire body 1 is first installed on the inner joint 21 and the front end of the conductor 101 is exposed and a preset length is reserved (as Figure 2 shown), compared with blind connection, the accuracy and controllability of the connection between the wire body 1 and the joint assembly 2 can be effectively controlled. After that, the outer joint 22 can be threadedly connected to the inner joint 21.

[0025] Refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 5, a ring-shaped first seal 23 is provided between the outer joint 22 and the inner joint 21. The first seal 23 is fixedly installed inside the outer joint 22. When the first seal 23 is axially stressed, it will deform to form a first sealing area between the inner joint 21 and the outer joint 22. A ring-shaped second seal 24 is provided between the inner joint 21 and the wire body 1. The left side surface of the second seal 24 is fixedly connected to the inner joint 21. When the second seal 24 is radially stressed and deforms, a second sealing area is formed between the inner joint 21 and the wire body 1. The second sealing area formed when the second seal 24 is radially stressed can stably and effectively seal and connect the wire body 1 and the inner joint 21 together. The inner joint 21, the outer joint 22, and the wire body 1 form a first sealed space under the sealing of the first sealing area and the second sealing area. The exposed conductor 101 and the connection between the exposed conductor 101 and the outer joint 22 are both located inside the first sealed space, effectively improving the sealing performance at the connection between the wire body 1 and the joint assembly 2, and thus effectively improving the overall sealing performance of the wire. A pressing head 25 for applying radial pressure to the second seal 24 is provided on the inner joint 21. The pressing head 25 is located outside the first sealed space, fully ensuring the sealing performance of the first sealed space.

[0026] Refer to Figure 1 , Figure 2 , Figure 3 and Figure 5 , a third seal 26 is further provided between the outer joint 22 and the inner joint 21. When the third seal 26 is axially stressed, it will deform to form a third sealing area between the inner joint 21 and the outer joint 22. A fourth seal 27 is further provided between the inner joint 21 and the wire body 1. When the fourth seal 27 is axially stressed, it will deform to form a fourth sealing area between the inner joint 21 and the wire body 1. The inner joint 21, the outer joint 22, and the wire body 1 form a second sealed space under the sealing of the third sealing area and the fourth sealing area. The pressing head 25 is located inside the second sealed space, and the first sealed space is located inside the second sealed space. Through double-layer space sealing, the overall sealing effect of the wire is further improved.

[0027] Refer to Figure 1 , Figure 2 , Figure 3 and Figure 5, the conductor 101, the insulating layer 103, and the protective layer 104 at the left end of the wire body 1 are distributed in a stepped manner. The number of the second seals 24 is two and they are respectively located between the protective layer 104 and the inner joint 21 and between the insulating layer 103 and the inner joint 21, and two second seal areas are correspondingly formed. The second seal areas are distributed in sequence along the axial direction of the wire body 1. Through double-layer sealing, the sealing performance of the connection between the wire body 1 and the inner joint 21 is improved, and correspondingly, the overall sealing effect of the wire is further improved. Among them, an adsorption area 29 is arranged between the two second seal areas, and a water-absorbing material is arranged in the adsorption area 29. When the steam breaks through the first second seal area, the steam is adsorbed by the water-absorbing material in the adsorption area 29, further preventing the steam from entering the second second seal area, and further improving the stability and reliability of the wire during long-term use.

[0028] Refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , the pressing head 25 includes a plurality of arc-shaped pressing blocks 251 and a control member 252 for controlling the movement of the arc-shaped pressing blocks 251. The plurality of arc-shaped pressing blocks 251 are radially slidably mounted on the inner joint 21 and radially move and are spliced to form a pressing ring under the control of the control member 252. The pressing ring applies a radial force to press the second seal 24. The control member 252 includes a limiting ring 2521, a unified connecting ring 2523, and a plurality of limiting rods 2522. The plurality of limiting rods 2522 are distributed along the circumferential direction of the limiting ring 2521 and are fixedly connected to the limiting ring 2521. The limiting rods 2522 are axially slidably mounted on the inner joint 21 and the left ends of the limiting rods 2522 are fixedly connected to the unified connecting ring 2523. A wedge-shaped arc surface is arranged on the outer side of the arc-shaped pressing block 251. During the process of screwing the outer joint 22 and the inner joint 21, as the outer joint 22 and the inner joint 21 relatively feed, the unified connecting ring 2523 abuts against the outer joint 22 and moves synchronously under the push of the outer joint 22, and then the limiting rods 2522 control the limiting ring 2521 to move synchronously. The limiting ring 2521 moves to the right and controls the arc-shaped pressing block 251 to slide radially inward along the wire body 1 through the wedge-shaped arc surface on the outer side of the arc-shaped pressing block 251 until it is spliced to form a pressing ring, and a radial pressure is applied to the second seal 24 during this process, so that the second seal 24 forms a stable and reliable second seal area between the inner joint 21 and the wire body 1.

[0029] Refer to Figure 1 , Figure 2 and Figure 3, a fixed connector 28 is provided on the inner connector 21. The fixed connector 28 includes a clamping block 282 connected with a limiting member 281. The clamping blocks 282 are distributed along the circumferential direction of the wire body 1 and the clamping blocks 282 are slidably mounted on the inner connector 21 in the radial direction. A limiting area 283 which is in wedge-shaped fit with the limiting member 281 is provided on the outer connector 22. The limiting area 283 is a wedge-shaped surface provided on the outer connector 22, and the wedge-shaped surface is an overall annular structure. During the process of threadedly connecting the outer connector 22 and the inner connector 21, the cooperation between the limiting area 283 and the limiting member 281 causes the clamping block 282 to automatically slide radially towards the wire body 1 and clamp and fix the wire body 1, so that the wire body 1 stably feeds outwards with the inner connector 21 under the action of the clamping force, improving the stability and reliability of the connection process and the connection state between the wire body 1 and the joint assembly 2.

[0030] Refer to Figure 2 , Figure 3 and Figure 6 , the protective layer 104 includes a braided layer 114, an aluminum foil layer 124, and a sheath layer 134 which are arranged in sequence from the inside outwards. Through the multi-layer structure design, the steam saturation resistance performance of the wire is improved.

[0031] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0032] In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "arranged", "connected", "installed", "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection, or a sliding connection; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, and may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0033] The embodiments of the present specific implementation manners are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A saturated steam test sensor wire, characterized in that: The wire body (1) comprises a conductor (101), a waterproof layer (102), an insulating layer (103) and a protective layer (104) which are sequentially arranged from the inside to the outside; A connector assembly (2), the connector assembly (2) comprising an inner connector (21) sleeved on the wire body (1) and exposing the conductor (101), and an outer connector (22) sleeved on the inner connector (21) and connected to the conductor (101); A sealing member 1 (23) is provided between the outer joint (22) and the inner joint (21), and the sealing member 1 (23) is deformed when subjected to axial force to form a sealing area 1 between the inner joint (21) and the outer joint (22); a sealing member 2 (24) is provided between the inner joint (21) and the wire body (1), and the sealing member 2 (24) is deformed when subjected to radial force to form a sealing area 2 between the inner joint (21) and the wire body (1); the inner joint (21), the outer joint (22) and the wire body (1) form a sealing space 1 under the sealing of the sealing area 1 and the sealing area 2, and the exposed conductor (101) and the connection between the exposed conductor (101) and the outer joint (22) are both located in the sealing space 1; The inner joint (21) is provided with a pressure head (25) for applying radial pressure to the second sealing member (24). The pressure head (25) is located outside the closed space one and includes a plurality of arc-shaped pressure blocks (251) and a control member (252) for controlling the movement of the arc-shaped pressure blocks (251). The plurality of arc-shaped pressure blocks (251) are slidably mounted on the inner joint (21) and radially move and splice under the control of the control member (252) to form a clamping ring, which radially applies force to clamp the second sealing member (24).

2. A saturated steam resistant test sensor wire according to claim 1, characterized in that: A sealing member 3 (26) is also provided between the outer joint (22) and the inner joint (21). The sealing member 3 (26) is deformed when subjected to axial force to form a sealing area 3 between the inner joint (21) and the outer joint (22). A sealing member 4 (27) is also provided between the inner joint (21) and the wire body (1). The sealing member 4 (27) is deformed when subjected to axial force to form a sealing area 4 between the inner joint (21) and the wire body (1). The inner joint (21), the outer joint (22) and the wire body (1) form a sealing space 2 under the sealing of the sealing area 3 and the sealing area 4. The sealing space 1 is located in the sealing space 2, and the pressure head (25) is located in the sealing space 2.

3. A saturated steam resistant test sensor wire according to any one of claims 1 or 2, characterized in that: The outer joint (22) is threadedly connected to the inner joint (21); a fixed connector (28) is provided on the inner joint (21); the fixed connector (28) comprises a clamping block (282) connected to a limiting member (281); the clamping block (282) is distributed along the circumference of the wire body (1) and the clamping block (282) is radially slidably installed on the inner joint (21); a limiting area (283) is provided on the outer joint (22) and is wedge-shapedly matched with the limiting member (281); during the threaded connection between the outer joint (22) and the inner joint (21), the limiting area (283) cooperates with the limiting member (281) to enable the clamping block (282) to automatically clamp and fix the wire body (1); and during the continuous clamping of the clamping block (282), the wire body (1) is stably fed along the inner joint (21) to the outer joint (22) under the action of the clamping force.

4. The saturated steam resistant test sensor wire according to claim 1, characterized in that: The control member (252) comprises a limiting ring (2521) and a plurality of limiting rods (2522). The plurality of limiting rods (2522) are distributed along the circumference of the limiting ring (2521) and the limiting rods (2522) are axially slidably installed on the inner joint (21). Under the limitation of the outer joint (22), the limiting rods (2522) control the axial sliding of the limiting ring (2521) to make the arc-shaped pressing block (251) move radially.

5. A saturated steam resistant test sensor wire according to claim 1 or 4, characterized in that: The conductor (101), the insulating layer (103) and the protective layer (104) at the end of the wire body (1) are distributed in a stepped manner. The number of the second sealing members (24) is two and they are respectively located between the protective layer (104) and the inner joint (21) and between the insulating layer (103) and the inner joint (21), and two sealing areas (2) are formed accordingly. The sealing areas (2) are distributed in sequence along the axial direction of the wire body (1).

6. The saturated steam resistant test sensor wire according to claim 5, characterized in that: An adsorption area (29) is arranged between the two sealing areas 2.

7. The saturated steam resistant test sensor wire according to claim 1, characterized in that: The protective layer (104) comprises a braided layer (114), an aluminum foil layer (124), and a sheath layer (134) which are arranged in sequence from the inside to the outside.

Images