A saturated steam test sensor wire

Abstract

The present invention relates to the field of sensor wire technology, specifically a saturated steam test resistant sensor wire, comprising a wire body and a connector assembly, wherein the connector assembly comprises an inner connector that is sleeved on the wire body and exposes the conductor, and an outer connector that is sleeved on the inner connector and connected to the conductor, and a seal 1 is provided between the outer connector and the inner connector, and the seal 1 is deformed by axial force to form a sealing area 1 between the inner connector and the outer connector. In the present invention, the wire body is first connected to the inner connector, while the conductor is exposed and a preset length is retained, and then the outer connector and the inner connector are fixedly connected together, and during the connection process, an axial force is applied to the seal 1 to form a stable sealing area 1 between the inner connector and the outer connector, and a radial force is applied to the seal 2 to form a stable sealing area 2 between the inner connector and the wire body, and the inner connector, the outer connector and the wire body form a stable sealing space 1 under the sealing of the sealing area 1 and the sealing area 2.

Description

Technical Field

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

[0002] Sensor wire resistant to saturated steam test (hereinafter referred to as wire) is widely used in various sensors that need to withstand high temperature, high humidity, and steam environments. It has the performance characteristics of high temperature resistance and chemical corrosion resistance.

[0003] At present, the wire body and connector of the wire are generally processed in the factory using an integrated molding process. The wire obtained by this process has high overall sealing and good quality. However, in some specific occasions, such as special customization according to on-site conditions (wire length), ensuring the long-term stability of the equipment and requiring maintenance and replacement, and when space is limited or frequent disassembly and assembly are required, the wire processed by integrated molding cannot fully meet the use requirements. Therefore, wires with detachable connectors are needed. At present, the sealing of wires with detachable connectors is mainly achieved by axially pressing the sealing ring to radially deform the sealing ring and seal it together with the outer wall of the wire body. However, the sealing effect is relatively low, and the stability and reliability of the wire in long-term use are low. In addition, existing wires are usually blind-inserted. Since the insertion amount of the conductor cannot be directly observed, it is difficult to accurately grasp the quality of the connection, which in turn affects the stability and reliability of the wire use. Summary of the Invention

[0004] The present invention provides a saturated steam resistant test sensor wire to solve the problems in the related art such as poor sealing effect, difficulty in accurately controlling connection quality, and thus reduced stability and reliability of the wire during long-term use.

[0005] The present invention provides a saturated steam test sensor wire, which comprises a wire body, wherein the wire body comprises a conductor, a waterproof layer, an insulating layer and a protective layer distributed in sequence from the inside to the outside; a joint assembly, wherein the joint assembly comprises an inner joint which is sleeved on the wire body and exposes the conductor, and an outer joint which is sleeved on the inner joint and connected to the conductor, a sealing member 1 is provided between the outer joint and the inner joint, the sealing member 1 is deformed by axial force to form a sealing area 1 between the inner joint and the outer joint, a sealing member 2 is provided between the inner joint and the wire body, the sealing member 2 is deformed by radial force to form a sealing area 1 between the inner joint and the outer joint, and a sealing member 3 is provided between the inner joint and the wire body, and the sealing member 3 is deformed by radial force to form a sealing area 1 between the inner joint and the outer joint. The inner joint is provided with a pressure head for applying radial pressure to the seal 2, and the pressure head is located outside the closed space 1 and includes a plurality of arc-shaped pressure blocks and a control member for controlling the movement of the arc-shaped pressure blocks. The plurality of arc-shaped pressure blocks are slidably installed on the inner joint and radially moved and spliced ​​under the control of the control member to form a clamping ring, which applies radial force to clamp the seal 2.

[0006] In one possible implementation, a seal three is provided between the external joint and the internal joint. The seal three is deformed under axial force to form a sealing area three between the internal joint and the external joint. A seal four is provided between the internal joint and the wire body. The seal four is deformed under axial force to form a sealing area four between the internal joint and the wire body. The internal joint, the external joint and the wire body form a sealed space two under the sealing of the sealing area three and the sealing area four. The sealed space one is located in the sealed space two, and the pressure head is located in the sealed space two.

[0007] In one possible implementation, the external joint is threadedly connected to the internal joint, and a fixed connector is provided on the internal joint. The fixed connector includes a clamping block connected to a limiting piece. The clamping blocks are distributed along the circumference of the wire body and the clamping blocks are radially slidably installed on the internal joint. A limiting area is provided on the external joint that cooperates with the limiting piece in a wedge shape. During the threaded connection between the external joint and the internal joint, the limiting area cooperates with the limiting piece to enable the clamping block to automatically clamp the fixed wire body, and during the continuous clamping of the clamping block, the wire body is stably fed toward the external joint along with the inner joint under the action of the clamping force.

[0008] In one possible implementation, the control member includes a limit ring and several limit rods, which are distributed along the circumference of the limit ring and are axially slidably installed on the inner joint. The limit rods control the axial sliding of the limit ring under the limitation of the outer joint to cause the arc-shaped pressure block to move radially.

[0009] In one possible implementation, the conductor, insulation layer and protective layer at the end of the wire body are distributed in a stepped manner, there are two seals and they are respectively located between the protective layer and the inner joint and between the insulation layer and the inner joint, and two sealing areas are formed accordingly. The sealing areas are distributed in sequence along the axial direction of the wire body.

[0010] In a possible implementation, an adsorption area is provided between the two second sealing areas.

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

[0012] The above one or more 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 connector, and the conductor is exposed and retained at a preset length. Then the outer connector and the inner connector are fixedly connected together, which can accurately control the insertion amount of the conductor and improve the connection quality of the wire body and the connector assembly. In the connection process, axial force is applied to the seal 1 to form a stable sealing area 1 between the inner connector and the outer connector, and radial force is applied to the seal 2 to form a stable sealing area 2 between the inner connector and the wire body. The inner connector, the outer connector and the wire body form a stable sealing space 1 under the sealing of the sealing area 1 and the sealing area 2, which fully improves the sealing performance of the connection between the wire body and the connector assembly, effectively improves the overall sealing performance of the wire, and thereby improves the stability and reliability of the wire use.

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

[0015] 3. In the present invention, two density zones 2 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, and an adsorption zone is provided between the two sealing zones 2 to prevent the steam that breaks through the first sealing zone 2 from entering the second sealing zone 2, thereby further improving the stability and reliability of the wire in long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a fixed connection state of a part of the line body and the connector assembly in the present invention.

[0017] Figure 2 It is a schematic diagram of the exploded structure of the joint assembly in the present invention.

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

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

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

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

[0022] In the figure: 1. Wire body; 101. Conductor; 102. Waterproof layer; 103. Insulation layer; 104. Protective layer; 114. Braided layer; 124. Aluminum foil layer; 134. Sheath layer; 2. Connector assembly; 21. Inner connector; 22. Outer connector; 23. Seal one; 24. Seal two; 25. Pressure head; 251. Arc-shaped pressure block; 252. Control part; 2521. Limiting ring; 2522. Limiting rod; 2523. Unified connecting ring; 26. Seal three; 27. Seal four; 28. Fixed connector; 281. Limiting part; 282. Clamping block; 283. Limiting area; 29. ​​Adsorption area. DETAILED DESCRIPTION

[0023] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described below, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 6 A saturated steam test sensor wire includes a wire body 1 and a connector 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 from the inside to the outside. An additional waterproof layer 102 is added between the conductor 101 and the insulating layer 103 to effectively improve the waterproof effect of the wire. The connector assembly 2 includes an inner connector 21 that is sleeved on the wire body 1 and exposes the conductor 101, and an outer connector 22 that is sleeved on the inner connector 21 and connected to the conductor 101. During the connection between the wire body 1 and the connector assembly 2, the wire body 1 is first installed on the inner connector 21 and the front end of the conductor 101 is exposed, and a preset length (such as Figure 2 As shown), compared with blind connection, the accuracy and controllability of the connection between the line body 1 and the connector assembly 2 can be effectively controlled, and then the outer connector 22 and the inner connector 21 can be threaded together.

[0025] See Figure 1 、 Figure 2 、 Figure 3 and Figure 5An annular seal 23 is provided between the outer joint 22 and the inner joint 21. The seal 23 is fixedly installed in the outer joint 22. When the seal 23 is subjected to axial force, it will deform and form a sealing area 1 between the inner joint 21 and the outer joint 22. An annular seal 24 is provided between the inner joint 21 and the line body 1. The left side of the seal 24 is fixedly connected to the inner joint 21, and the seal 24 is deformed when subjected to radial force to form a sealing area 2 between the inner joint 21 and the line body 1. The seal 24 is deformed when subjected to radial force to form a sealing area 2, which can be stable. The wire body 1 and the inner joint 21 are effectively sealed and connected together. The inner joint 21, the outer joint 22 and the wire body 1 form a sealed space one under the sealing of the sealing area one and the sealing area two. The exposed conductor 101 and the connection between the exposed conductor 101 and the outer joint 22 are all located in the sealed space one, which effectively improves the sealing performance of the connection between the wire body 1 and the joint assembly 2, and thus effectively improves the sealing performance of the entire wire. A pressure head 25 for applying radial pressure to the seal 2 24 is provided on the inner joint 21. The pressure head 25 is located outside the closed space one, fully ensuring the sealing performance of the sealed space one.

[0026] See Figure 1 、 Figure 2 、 Figure 3 and Figure 5 A sealing member 3 26 is also provided between the external joint 22 and the internal joint 21. When the sealing member 3 26 is subjected to axial force, it will deform and form a sealing area 3 between the internal joint 21 and the external joint 22. A sealing member 4 27 is also provided between the internal joint 21 and the wire body 1. When the sealing member 4 27 is subjected to axial force, it will deform and form a sealing area 4 between the internal joint 21 and the wire body 1. The internal joint 21, the external joint 22 and the wire body 1 form a sealed space 2 under the sealing of the sealing area 3 and the sealing area 4. The pressure head 25 is located in the sealed space 2, and the sealed space 1 is located in the sealed space 2. Through the double-layer space sealing, the overall sealing effect of the wire is further improved.

[0027] See Figure 1 、 Figure 2 、 Figure 3 and Figure 5The conductor 101, insulating layer 103 and protective layer 104 at the left end of the wire body 1 are distributed in a stepped manner. There are two sealing members 24, which 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. Through double-layer sealing, the sealing performance of the connection between the wire body 1 and the inner joint 21 is improved, and the sealing effect of the entire wire is further improved accordingly. Among them, an adsorption area 29 is provided between the two sealing areas 2, and a water-absorbing material is provided in the adsorption area 29. When steam breaks through the first sealing area 2, the steam is adsorbed by the water-absorbing material in the adsorption area 29, further preventing the steam from entering the second sealing area 2, thereby further improving the stability and reliability of the wire for long-term use.

[0028] See Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 The pressure head 25 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 radially slidably installed on the inner joint 21 and radially move and splice to form a clamping ring under the control of the control member 252. The clamping ring radially applies force to compress the sealing member 24. The control member 252 includes a limit ring 2521, a unified connecting ring 2523 and a plurality of limit rods 2522. The plurality of limit rods 2522 are distributed along the circumference of the limit ring 2521 and are fixedly connected to the limit ring 2521. The limit rods 2522 are axially slidably installed on the inner joint 21 and the left ends of the limit rods 2522 are fixedly connected to the unified connecting ring 2523. A wedge-shaped arc surface is provided on the outer side of the arc-shaped pressure block 251. During the process of threaded connection between the external joint 22 and the internal joint 21, as the external joint 22 and the internal joint 21 are fed relative to each other, the unified connecting ring 2523 rests on the external joint 22 and moves synchronously under the push of the external joint 22, and then the limiting rod 2522 controls the limiting ring 2521 to move synchronously, and the limiting ring 2521 moves to the right and controls the arc pressure block 251 through the wedge-shaped arc surface on the outside of the arc pressure block 251 to slide radially inward along the wire body 1 until it is spliced ​​to form a clamping ring, and in this process, radial pressure is applied to the seal 24, so that the seal 24 forms a stable and reliable sealing area 2 between the internal joint 21 and the wire body 1.

[0029] See Figure 1 、 Figure 2 and Figure 3A fixed connecting head 28 is provided on the inner joint 21, and the fixed connecting head 28 includes a clamping block 282 connected to the limiting piece 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, which cooperates with the limiting piece 281 in a wedge shape. The limiting area 283 is a wedge-shaped surface provided on the outer joint 22, and the wedge surface is an annular structure as a whole. In the process of threading the outer joint 22 and the inner joint 21, the limiting area 283 cooperates with the limiting piece 281 to make the clamping block 282 automatically slide radially toward the wire body 1 and clamp the wire body 1 to fix it, so that the wire body 1 can be stably fed along with the inner joint 21 to the outer joint 22 under the action of the clamping force, thereby improving the stability and reliability of the connection process and connection state of the wire body 1 and the connector assembly 2.

[0030] See 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 to the outside. The multi-layer structure design improves the saturated steam resistance of the wire.

[0031] In the embodiments of the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," or "above" a second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below," "below," or "below" a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0032] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "connected," "installed," and "connected" should be understood in a broad sense. For example, they may refer to fixed or detachable connections, integral or sliding connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0033] The embodiments of this specific implementation method are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A saturated steam test sensor wire, characterized by: The invention comprises a wire body (1), wherein the wire body (1) comprises a conductor (101), a waterproof layer (102), an insulating layer (103), and a protective layer (104) which are sequentially distributed from the inside to the outside; A 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. 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 (1) 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 compression ring. The compression ring radially applies force to compress the second sealing member (24). The control member (252) includes 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). The limiting rods (2522) control the axial sliding of the limiting ring (2521) under the limitation of the outer joint (22) to make the arc-shaped pressure block (251) move radially.

2. The saturated steam resistant sensor wire according to claim 1, characterized in that: A sealing member 3 (26) is further provided between the outer joint (22) and the inner joint (21). The sealing member 3 (26) is deformed under axial force to form a sealing area 3 between the inner joint (21) and the outer joint (22). A sealing member 4 (27) is further provided between the inner joint (21) and the wire body (1). The sealing member 4 (27) is deformed under 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 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), and a fixed connector (28) is provided on the inner joint (21). The fixed connector (28) includes 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 is radially slidably installed on the inner joint (21). A limiting area (283) is provided on the outer joint (22) and is wedge-shaped 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 the fixed wire body (1). In the process of 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 sensor wire according to claim 1, 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).

5. The saturated steam resistant sensor wire according to claim 4, characterized in that: An adsorption area (29) is provided between the two sealing areas 2.

6. 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 sequentially arranged from the inside to the outside.

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