A thermocouple lead-through device for use in an ultra-high pressure environment

Abstract

The utility model discloses a thermocouple leading-out device for ultrahigh pressure environment, including valve seat and the valve core of the bite in the inside of valve seat, the upper end and the lower end of valve core are provided with upper baffle and lower baffle respectively, be provided with sealed insulation isolation piece between upper baffle and lower baffle, the inside of upper baffle, sealed insulation isolation piece, lower baffle is sequentially worn with a plurality of thermocouple compensation lead, the thermocouple compensation lead passes sealed insulation isolation piece and valve core and adjacent thermocouple compensation lead insulation isolation, the utility model discloses can carry out sealed insulation protection to thermocouple compensation lead in high temperature high pressure environment, improves thermocouple compensation lead's anti -interference ability and sealing performance in high temperature high pressure environment.

Description

Technical Field

[0001] This utility model belongs to the technical field of thermocouple lead-out devices, specifically relating to a thermocouple lead-out device for use in ultra-high pressure environments. Background Technology

[0002] A thermocouple lead-out device is used to extract the thermoelectric potential signal obtained by the thermocouple installed in a closed environment from the closed environment and transmit it to a measuring instrument or control system to achieve accurate temperature measurement in the closed environment.

[0003] Due to limitations in the structure and materials of thermocouple lead-out devices, ordinary thermocouple lead-out devices have weak anti-interference capabilities in ultra-high pressure environments and are easily affected when extracting thermoelectric potential signals. Furthermore, in high-pressure environments, the thermocouple compensation wires lack protection and are easily damaged, leading to failure in thermoelectric potential signal transmission. In addition, ordinary thermocouple lead-out devices have weak sealing performance, which can cause varying degrees of interference to the actual thermoelectric potential signal in high-pressure environments while extracting the thermoelectric potential signal.

[0004] Therefore, in view of the problems of weak anti-interference ability and poor sealing performance of existing thermocouple lead-out devices in high temperature and high pressure environments, this utility model discloses a thermocouple lead-out device for ultra-high pressure environments. Utility Model Content

[0005] This utility model discloses a thermocouple lead-out device for ultra-high pressure environments, which can provide sealed insulation protection for thermocouple compensating wires in high-temperature and high-pressure environments, thereby improving the anti-interference ability and sealing performance of thermocouple compensating wires in high-temperature and high-pressure environments.

[0006] This utility model is achieved through the following technical solution:

[0007] A thermocouple lead-out device for use in ultra-high pressure environments includes a valve seat and a valve core engaged inside the valve seat. An upper baffle and a lower baffle are respectively provided at the upper and lower ends of the valve core. A sealing and insulating isolator is provided between the upper and lower baffles. A plurality of thermocouple compensation wires are sequentially inserted inside the upper baffle, the sealing and insulating isolator, and the lower baffle. The thermocouple compensation wires are insulated and isolated from the valve core and adjacent thermocouple compensation wires through the sealing and insulating isolator.

[0008] The upper and lower baffles are used to press and fix the sealing and insulating isolator, which is sleeved around the valve core and also serves to protect it. The thermocouple compensating wire is laid around the valve core, and from top to bottom, it passes through the interior of the upper baffle, the sealing and insulating isolator, and the lower baffle before extending downwards out of the valve seat. The sealing and insulating isolator provides insulation protection and fixes the thermocouple compensating wire, while also isolating it from the valve core, thus ensuring the safe exit of the thermocouple compensating wire.

[0009] To better realize this utility model, the valve seat is further provided with a central cavity, the central cavity is provided with a valve core, and a sealing and insulating isolation element is provided in the area around the valve core inside the central cavity. The outer side of the sealing and insulating isolation element is fitted with the cavity wall of the central cavity, and the inner side of the sealing and insulating isolation element is fitted with the outer side of the valve core.

[0010] To better realize this utility model, the sealing and insulating isolation component further includes a sealing sleeve and an insulating pad arranged sequentially from top to bottom inside the central cavity. Both the sealing sleeve and the insulating pad have through holes corresponding to the thermocouple compensation wires. The top of the sealing sleeve is pressed against the bottom of the upper baffle.

[0011] To better realize this utility model, an insulating tube is further provided between the top of the lower baffle and the bottom of the insulating pad, and the thermocouple compensation wire is passed through the insulating tube.

[0012] To better realize this utility model, an insulating tube is further provided on the upper baffle, and the thermocouple compensation wire is passed through the insulating tube.

[0013] To better realize this utility model, the top end of the valve seat is fitted with a first clamping nut, and the bottom end of the valve seat is fitted with a second clamping nut. The bottom end of the first clamping nut presses down on the upper baffle, and the second clamping nut presses up on the lower baffle.

[0014] To better realize this utility model, the top end of the valve core is provided with a first threaded section, and the bottom end of the valve core is provided with a second threaded section. The first threaded section is threadedly connected to the first clamping nut, and the second threaded section is threadedly connected to the second clamping nut.

[0015] To better realize this utility model, the top of the valve seat is further engaged with a valve cover, and a sealing element is provided between the engagement point of the valve seat and the valve cover.

[0016] To better realize this utility model, the sealing element further includes an O-ring and a triangular metal ring.

[0017] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0018] This invention provides a valve seat and a valve core, with a sealed insulating isolation component in the area between them. The thermocouple compensation wire is then passed through the sealed insulating isolation component to extract the thermoelectric potential signal. The sealed insulating isolation component provides sealing support and insulation protection for the thermocouple compensation wire, improving its anti-interference ability and sealing performance in high-temperature and high-pressure environments. This ensures that the thermocouple compensation wire can reliably and safely extract the thermoelectric potential signal in high-temperature and high-pressure environments. Attached Figure Description

[0019] Figure 1 This is a cross-sectional view of the internal structure of the thermocouple lead-out device.

[0020] Figure 2 This is a top view of the valve cover;

[0021] Figure 3 This is a three-dimensional structural diagram of a thermocouple lead-out device.

[0022] Wherein: 1-valve seat; 2-valve cover; 3-valve core; 4-first clamping nut; 5-upper baffle; 6-O-ring seal; 7-triangular metal seal; 8-lower baffle; 9-second clamping nut; 10-set screw hole; 11-inner sealing sleeve; 12-outer sealing sleeve; 13-first insulating pad; 14-second insulating pad; 15-thermocouple compensating wire; 16-insulating tube; 17-screw; 18-threaded hole; 100-sealing sleeve; 200-insulating pad. Detailed Implementation

[0023] Example 1:

[0024] This embodiment provides a thermocouple lead-out device for use in ultra-high pressure environments, such as... Figure 1 and Figure 3 As shown, the valve includes a valve seat 1 and a valve core 3 that is engaged inside the valve seat 1. The upper end and lower end of the valve core 3 are respectively provided with an upper baffle 5 and a lower baffle 8. A sealing and insulating isolation element is provided between the upper baffle 5 and the lower baffle 8. A plurality of thermocouple compensation wires 15 are sequentially inserted inside the upper baffle 5, the sealing and insulating isolation element, and the lower baffle 8. The thermocouple compensation wires 15 are insulated and isolated from the valve core 3 and the adjacent thermocouple compensation wires 15 through the sealing and insulating isolation element.

[0025] The valve seat 1 is fixedly installed on high-temperature and high-pressure equipment where a thermoelectric potential (TEP) signal needs to be extracted. The TEP signal is extracted via thermocouple compensation wires 15. The valve core 3 is engaged inside the valve seat 1, and a sealing and insulating isolation component is filled between the outer surface of the valve core 3 and the inner cavity of the valve seat 1. The sealing and insulating isolation component is fixed by pressing it with the valve core 3. At the same time, the upper baffle 5 and lower baffle 8 at the upper and lower ends of the valve core 3 also press and fix the upper and lower ends of the sealing and insulating isolation component, so that the sealing and insulating isolation component is stably installed inside the valve seat 1. Several thermocouple compensation wires 15 are evenly distributed around the valve core 3 in the circumferential direction. The thermocouple compensation wires 15 pass through the upper baffle 5, the sealing and insulating isolation component, and the lower baffle 8 in sequence from top to bottom, and then exit from the lower end of the valve seat 1 away from the high-temperature and high-pressure equipment to extract the TEP signal. Meanwhile, by setting a sealed insulating isolator, the thermocouple compensation wire 15 is isolated from the valve core 3. The sealed insulating isolator provides insulation protection for the thermocouple compensation wire 15 and ensures its airtightness, thereby improving the anti-interference capability of the thermocouple compensation wire 15. At the same time, the sealed insulating isolator supports and reinforces the thermocouple compensation wire 15, preventing it from bending or deforming.

[0026] Example 2:

[0027] This embodiment discloses a thermocouple lead-out device for use in ultra-high pressure environments, which is an optimization based on Embodiment 1, such as... Figure 1 As shown, the valve seat 1 has a central cavity inside, and a valve core 3 is disposed inside the central cavity. A sealing and insulating isolation element is disposed in the area surrounding the valve core 3 inside the central cavity. The outer side of the sealing and insulating isolation element is fitted to the cavity wall of the central cavity, and the inner side of the sealing and insulating isolation element is fitted to the outer side of the valve core 3. The sealing and insulating isolation element includes a sealing sleeve 100 and an insulating pad 200 disposed sequentially from top to bottom inside the central cavity. Both the sealing sleeve 100 and the insulating pad 200 have through holes corresponding to the thermocouple compensation wire 15. The top end of the sealing sleeve 100 is pressed against the bottom end of the upper baffle 5.

[0028] The sealing sleeve 100 is made of PTFE bronze material, which ensures tensile strength while making the Shore D hardness of the sealing sleeve 100 relatively low. At the bend of the thermocouple compensation wire 15, it can better protect the thermocouple compensation wire 15 from damage.

[0029] The sealing sleeve 100 includes an inner sealing sleeve 11 and an outer sealing sleeve 12. The inner sealing sleeve 11 is disposed on the side of the thermocouple compensating wire 15 close to the valve core 3, and the outer sealing sleeve 12 is disposed on the side of the thermocouple compensating wire 15 away from the valve core 3. The inner sealing sleeve 11 and the outer sealing sleeve 12 are joined together to form a through hole for the thermocouple compensating wire 15 to pass through.

[0030] The insulating pad 200 includes a first insulating pad 13 and a second insulating pad 14. The first insulating pad 13 is made of PTFE bronze material, which ensures tensile strength while having a relatively low Shore D hardness, thus better protecting the thermocouple compensation wire from damage at bends. The second insulating pad 14 is made of PEEK diet material, which gives it higher tensile strength and higher Shore D hardness than the first insulating pad 13. This effectively prevents the second insulating pad 14 from deforming under high pressure, thereby providing stable support for the thermocouple compensation wire 15.

[0031] While providing protection and support for the thermocouple compensation wire 15 through the sealing sleeve 100 and the insulating pad 200, the sealing performance and insulation of the thermocouple compensation wire 15 can also be guaranteed, thereby improving the anti-interference ability of the thermocouple compensation wire 15 in the process of extracting the thermoelectric potential signal and ensuring that the thermocouple compensation wire 15 can safely and effectively extract the thermoelectric potential signal.

[0032] The rest of this embodiment is the same as that of Embodiment 1, so it will not be described again.

[0033] Example 3:

[0034] This embodiment discloses a thermocouple lead-out device for use in ultra-high pressure environments, which is an optimization based on Embodiment 1 or 2, such as... Figure 1 As shown, an insulating tube 16 is provided between the top of the lower baffle 8 and the bottom of the insulating pad 200, and the thermocouple compensation wire 15 passes through the insulating tube 16. An insulating tube 16 is provided on the upper baffle 5, and the thermocouple compensation wire 15 passes through the insulating tube 16.

[0035] Both the upper baffle 5 and the lower baffle 8 have lead-out holes corresponding to the positions where the thermocouple compensating wire 15 will pass through. An insulating tube 16 is inserted into the lead-out holes, and the thermocouple compensating wire 15 is installed through the insulating tube 16. By setting the insulating tube 16, the thermocouple compensating wire 15 can be insulated and protected when passing through areas outside the valve seat 1, thus preventing damage to the thermocouple compensating wire 15.

[0036] The rest of this embodiment is the same as that of embodiment 1 or 2, so it will not be described again.

[0037] Example 4:

[0038] This embodiment discloses a thermocouple extraction device for use in ultra-high pressure environments, which is optimized based on any one of embodiments 1-3, such as... Figure 1 and Figure 3As shown, a first clamping nut 4 is fitted onto the top of the valve seat 1, and a second clamping nut 9 is fitted onto the bottom of the valve seat 1. The bottom of the first clamping nut 4 presses down against the upper baffle 5, and the second clamping nut 9 presses up against the lower baffle 8. A first threaded section is provided at the top of the valve core 3, and a second threaded section is provided at the bottom of the valve core 3. The first threaded section is threadedly connected to the first clamping nut 4, and the second threaded section is threadedly connected to the second clamping nut 9.

[0039] The valve core 3 has a first stepped surface at its top, which is used to axially limit the upper baffle 5. A first threaded section is provided at the top of the first stepped surface, and a first clamping nut 4 is screwed onto the outside of the first threaded section. By rotating the first clamping nut 4, the bottom end face of the first clamping nut 4 engages with the first stepped surface to press and fix the upper baffle 5 downwards. The valve seat 1 has a groove at its bottom, which is used to axially limit the installation of the lower baffle 8. A second clamping nut 9 is screwed onto the second threaded section at the bottom of the valve core 3. By rotating the second clamping nut 9, the top end face of the second clamping nut 9 engages with the bottom surface of the groove to press and fix the lower baffle 8 upwards. Then, the upper baffle 5 and the lower baffle 8 together press and fix the sealing and insulating isolation component.

[0040] The rest of the content of this embodiment is the same as any one of embodiments 1-3, so it will not be repeated here.

[0041] Example 5:

[0042] This embodiment discloses a thermocouple extraction device for use in ultra-high pressure environments, which is optimized based on any one of embodiments 1-4, such as... Figure 1 and Figure 2 As shown, the valve seat 1 is engaged with the valve cover 2 at its top, and a sealing element is provided between the engagement point of the valve seat 1 and the valve cover 2. The sealing element includes an O-ring 6 and a triangular metal ring 7.

[0043] An annular groove is provided at the joint between the valve seat 1 and the valve cover 2. An O-ring 6 and a triangular metal sealing ring 7 are installed in the annular groove from top to bottom. By setting the O-ring 6 and the triangular metal sealing ring 7, the joint between the valve seat 1 and the valve cover 2 can be effectively sealed, thereby ensuring that the thermocouple compensation wire 15 passing through the valve seat 1 is in a relatively sealed space.

[0044] Furthermore, the top of the valve cover 2 is provided with several threaded holes 18 arranged circumferentially, and screws 17 are inserted into the threaded holes 18. The valve cover 2 together with the valve seat 1 can be fixed to the high-temperature and high-pressure equipment by means of the screws 17. At the same time, at least one set screw hole 10 is provided at the top of the valve cover 2. A set screw can be inserted through the set screw hole 10 to facilitate the removal of the valve cover 2 from the high-temperature and high-pressure equipment.

[0045] The rest of the content of this embodiment is the same as any one of embodiments 1-4, so it will not be repeated here.

[0046] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A thermocouple lead-out device for use in ultra-high pressure environments, comprising a valve seat (1) and a valve core (3) engaged inside the valve seat (1), characterized in that, The upper end and lower end of the valve core (3) are respectively provided with an upper baffle (5) and a lower baffle (8). A sealing and insulating isolation element is provided between the upper baffle (5) and the lower baffle (8). A plurality of thermocouple compensation wires (15) are sequentially inserted inside the upper baffle (5), the sealing and insulating isolation element and the lower baffle (8). The thermocouple compensation wires (15) are insulated and isolated from the valve core (3) and the adjacent thermocouple compensation wires (15) through the sealing and insulating isolation element.

2. The thermocouple lead-out device for ultra-high pressure environment according to claim 1, characterized in that, The valve seat (1) has a central cavity inside, and a valve core (3) is provided inside the central cavity. A sealing and insulating isolation element is provided in the area around the valve core (3) inside the central cavity. The outer side of the sealing and insulating isolation element is fitted with the cavity wall of the central cavity, and the inner side of the sealing and insulating isolation element is fitted with the outer side of the valve core (3).

3. A thermocouple lead-out device for ultra-high pressure environments according to claim 2, characterized in that, The sealing and insulating isolation component includes a sealing sleeve (100) and an insulating pad (200) arranged sequentially from top to bottom inside the central cavity. Both the sealing sleeve (100) and the insulating pad (200) have perforations corresponding to the thermocouple compensation wire (15). The top of the sealing sleeve (100) is pressed against the bottom of the upper baffle (5).

4. A thermocouple leadthrough for use in an ultra-high pressure environment according to claim 3, wherein An insulating tube (16) is provided between the top of the lower baffle (8) and the bottom of the insulating pad (200), and the thermocouple compensation wire (15) is inserted inside the insulating tube (16).

5. A thermocouple leadthrough for use in an ultra-high pressure environment according to claim 4, wherein An insulating tube (16) is provided on the upper baffle (5), and the thermocouple compensation wire (15) is inserted inside the insulating tube (16).

6. A thermocouple lead-out device for ultra-high pressure environments according to any one of claims 1-5, characterized in that, The valve seat (1) is fitted with a first clamping nut (4) at its top end and a second clamping nut (9) at its bottom end. The bottom end of the first clamping nut (4) presses down on the upper baffle (5) and the second clamping nut (9) presses up on the lower baffle (8).

7. A thermocouple leadthrough for use in an ultra-high pressure environment according to claim 6, wherein The valve core (3) has a first threaded section at its top and a second threaded section at its bottom. The first threaded section is threadedly connected to the first clamping nut (4), and the second threaded section is threadedly connected to the second clamping nut (9).

8. A thermocouple lead-out device for ultra-high pressure environments according to any one of claims 1-5, characterized in that, The valve seat (1) is fitted with a valve cover (2) at its top end, and a sealing element is provided between the valve seat (1) and the valve cover (2) at the fit.

9. A thermocouple lead-out device for ultra-high pressure environments according to claim 8, characterized in that, The sealing element includes an O-ring (6) and a triangular metal ring (7).

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