Adjustable sealed gas sampling port connection device

Abstract

The utility model relates to an adjustable sealed gas sampling port connecting device, including stainless steel compensation core joint, outer thread joint, silicon rubber seal pipe, take hole adapter cover and glass sampling tube, the input of stainless steel compensation core joint is one inch outer thread joint, and the output is two minutes inner thread joint, the outer thread joint is used for connecting stainless steel compensation core joint and silicon rubber seal pipe, the hole adapter cover forms the elastic package seal to the glass sampling tube outer wall through the rotation compression silicon rubber seal pipe, can significantly promote the sealed reliability of extreme environment gas sampling.

Description

Technical Field

[0001] This utility model relates to an adjustable sealed gas sampling port connection device, belonging to the field of sampling tube technology. Background Technology

[0002] Current gas sampling processes mostly employ rubber plug sealing solutions, using a glass sampling tube installed through drilling to collect gas. Traditional rubber materials are prone to thermal and photochemical aging and deformation under high-temperature environments, leading to seal failure. Drilling operations suffer from large diameter deviations and poor adaptability, often causing safety hazards such as loosening and breakage of the glass tube or difficulty in insertion and removal. Existing joints generally use fixed sealing structures, which cannot compensate for glass tube diameter tolerances through elastic deformation and lack sealing pressure regulation functions. Gas leaks are prone to occur under vibration or thermal expansion conditions, and maintenance requires destructive disassembly, posing risks of injury from high-pressure splashes and poisoning from harmful gases. Utility Model Content

[0003] To address the aforementioned problems in the existing technology, this utility model provides an adjustable sealed gas sampling port connection device, which can significantly improve the sealing reliability of gas sampling in extreme environments.

[0004] The technical solution of this utility model is as follows:

[0005] An adjustable sealed gas sampling port connection device includes a stainless steel compensating core connector, an external threaded connector, a silicone rubber sealing tube, a perforated adapter cap, and a glass sampling tube. The input end of the stainless steel compensating core connector is a one-inch external thread interface, and the output end is a two-point internal thread interface. The external threaded connector is used to connect the stainless steel compensating core connector and the silicone rubber sealing tube. The perforated adapter cap forms an elastic seal around the outer wall of the glass sampling tube by rotating and compressing the silicone rubber sealing tube.

[0006] The external threaded connector has one end connected to the internal thread interface of the stainless steel compensating core connector via an external thread, and the other end has a 1 / 2-inch external thread interface; the inner wall of the perforated adapter cover has a 1 / 2-inch internal thread interface that matches the 1 / 2-inch external thread interface of the external threaded connector, and a 1 / 2-inch through hole is opened in the center; the silicone rubber sealing tube is sleeved in the 1 / 2-inch through hole of the perforated adapter cover, the inner diameter of the silicone rubber sealing tube is adapted to the outer diameter range of the glass sampling tube, and the outer diameter is clearance-fitted with the 1 / 2-inch through hole.

[0007] The inner wall of the through hole is provided with an annular anti-detachment ring, which is a continuous annular protrusion. The inner wall of the anti-detachment ring is in clearance fit with the outer wall of the glass sampling tube, which is used to limit the axial displacement of the glass sampling tube and buffer vibration impact.

[0008] The stainless steel compensation core connector has a tapered diameter reduction channel inside, which is used to reduce the diameter of the glass sampling tube from DN25 to DN15.

[0009] This utility model has the following beneficial effects:

[0010] This utility model achieves the dual functions of sampling pipeline diameter reduction and dynamic sealing compensation through a stepped threaded connection structure of stainless steel compensating core connector, external thread connector and perforated adapter cap, combined with the axial compression deformation mechanism of silicone rubber sealing tube. It achieves multi-condition adaptive sealing effect and effectively solves the problems of poor sealing, cumbersome drilling, easy breakage and difficult handling of glass tubes, unstable fixation, leakage of harmful gases and difficulty in cleaning that exist in traditional rubber plugs. At the same time, it improves sampling efficiency and ensures personnel safety. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] The reference numerals in the figure are as follows:

[0013] 1. Stainless steel compensating core connector; 2. External thread connector; 3. Silicone rubber sealing tube; 4. Adapter cover with hole; 5. Glass sampling tube; 41. One-way through hole. Detailed Implementation

[0014] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0015] Please see Figure 1 The utility model provides a technical solution:

[0016] An adjustable sealed gas sampling port connection device includes a stainless steel compensating core connector 1, an external thread connector 2, a silicone rubber sealing tube 3, a perforated adapter cap 4, and a glass sampling tube 5. The input end of the stainless steel compensating core connector 1 is a one-inch external thread interface, and the output end is a two-point internal thread interface. The external thread connector 2 is used to connect the stainless steel compensating core connector 1 and the silicone rubber sealing tube 3. The perforated adapter cap 4 forms an elastic wrapping seal on the outer wall of the glass sampling tube 5 by rotating and compressing the silicone rubber sealing tube 3.

[0017] One end of the external threaded connector 2 is connected to the internal thread interface of the stainless steel compensating core connector 1 via an external thread, and the other end is a 1 / 2-inch external thread interface; the inner wall of the perforated adapter cover 4 is provided with a 1 / 2-inch internal thread interface that matches the 1 / 2-inch external thread interface of the external threaded connector 2, and a 1 / 2-inch through hole 41 is opened in the center; the silicone rubber sealing tube 3 is sleeved in the 1 / 2-inch through hole 41 of the perforated adapter cover 4, and the inner diameter of the silicone rubber sealing tube 3 is adapted to the outer diameter range of the glass sampling tube 5, and the outer diameter is clearance-fitted with the 1 / 2-inch through hole 41;

[0018] The silicone rubber sealing tube 3 is made of high-temperature resistant silicone rubber, which is resistant to aging and has excellent elasticity. Preferably, the silicone rubber sealing tube 3 is a high-temperature resistant composite material, with an outer polyvinyl chloride reinforcing layer with a thickness of 0.5-1.2mm and an inner silicone rubber sealing layer. The Shore hardness is 50-60HA, the compression set is ≤15% (under the test conditions of 200℃ / 24h), and the axial compression stroke of the sealing tube is 3-5mm.

[0019] The inner wall of the through hole 41 is provided with an annular anti-detachment ring. The anti-detachment ring is a continuous annular protrusion, specifically, it is similar to a thread-like protrusion. The inner wall of the anti-detachment ring is in clearance fit with the outer wall of the glass sampling tube 5, which is used to limit the axial displacement of the glass sampling tube 5 and buffer vibration impact.

[0020] The stainless steel compensating core connector 1 has a tapered diameter reduction channel inside, which is used to reduce the diameter of the glass sampling tube 5 from DN25 to DN15, specifically the diameter of the process sampling port from DN25 to DN15.

[0021] Specifically, this device adopts a three-stage adapter structure, with the components connected in the following order: the input end of the stainless steel compensating core connector 1 is connected to the sampling port of the glass sampling tube 5 via a 1-inch external thread interface, and its output end is a 2-point internal thread interface with an internal tapered reduction channel that can reduce the gas flow channel from DN25 to DN15; one end of the external thread connector 2 is connected to the 2-point internal thread interface of the stainless steel compensating core connector 1 via a 2-point external thread interface, and the other end is a 4-point external thread interface; the 4-point internal thread interface of the perforated adapter cover 4 is connected to the 4-point internal thread interface of the external thread connector 2. The glass sampling tube 5 is connected to a threaded interface with a through hole 41 at its center. The inner wall of the through hole 41 is provided with an annular anti-dislodgement ring to limit the axial displacement of the glass sampling tube 5 and buffer vibration. The silicone rubber sealing tube 3 is sleeved in the through hole 41 of the perforated adapter cover 4. Its inner diameter is adapted to the outer diameter range of 5.8-8.5mm of the glass sampling tube 5, and its outer diameter is clearance-fitted with the through hole 41. Axial pressure is applied through the perforated adapter cover 4, causing the silicone rubber sealing tube 3 to undergo radial elastic deformation to wrap around the outer wall of the glass sampling tube 5, forming a dynamic sealing cavity.

[0022] The working principle of the above-mentioned adjustable sealed gas sampling port connection device is as follows:

[0023] During operation, first screw the one-inch external thread end of the stainless steel compensating core connector 1 into the process sampling port for fixation. Then connect the two-point external thread end of the external thread connector 2 to the two-point internal thread end of the stainless steel compensating core connector 1. Next, pre-install the silicone rubber sealing tube 3 into the one-point through hole 41 of the perforated adapter cover 4, ensuring that the silicone rubber sealing tube 3 and the one-point through hole 41 are aligned. Insert the glass sampling tube 5 into the one-point through hole 41 until its outer wall contacts the anti-dislodgement ring. At this time, the axial displacement of the glass sampling tube 5 is restricted. Rotate the perforated adapter cover 4 clockwise so that its four-point internal thread is screwed into the four-point external thread of the external thread connector 2. During the downward pressing of the perforated adapter cover 4, the silicone rubber sealing tube 3 is continuously compressed, forcing the inner diameter of the silicone rubber sealing tube 3 to shrink and tightly wrap around the outer wall of the glass sampling tube 5 until the preset sealing pressure is reached. If it is necessary to clean or replace the glass sampling tube 5, rotate the perforated adapter cover 4 counterclockwise to release the pressure, and the glass sampling tube 5 can be easily pulled out. After disassembly, the operation is reversed to reassemble.

[0024] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An adjustable sealed gas sampling port connection device, characterized in that: The device includes a stainless steel compensating core connector (1), an external thread connector (2), a silicone rubber sealing tube (3), a perforated adapter cap (4), and a glass sampling tube (5). The input end of the stainless steel compensating core connector (1) is a one-inch external thread interface, and the output end is a two-point internal thread interface. The external thread connector (2) is used to connect the stainless steel compensating core connector (1) and the silicone rubber sealing tube (3). The perforated adapter cap (4) forms an elastic wrapping seal on the outer wall of the glass sampling tube (5) by rotating and compressing the silicone rubber sealing tube (3).

2. The adjustable sealed gas sampling port connection device as described in claim 1, characterized in that: One end of the external threaded connector (2) is connected to the internal thread interface of the stainless steel compensating core connector (1) via an external thread, and the other end is a 1 / 4 point external thread interface; the inner wall of the perforated adapter cover (4) is provided with a 1 / 4 point internal thread interface that matches the 1 / 4 point external thread interface of the external threaded connector (2), and a 1 / 4 point through hole (41) is opened in the center; the silicone rubber sealing tube (3) is sleeved in the 1 / 4 point through hole (41) of the perforated adapter cover (4), the inner diameter of the silicone rubber sealing tube (3) is adapted to the outer diameter range of the glass sampling tube (5), and the outer diameter is clearance-fitted with the 1 / 4 point through hole (41).

3. The adjustable sealed gas sampling port connection device as described in claim 2, characterized in that: The inner wall of the through hole (41) is provided with an annular anti-detachment ring. The anti-detachment ring is a continuous annular protrusion. The inner wall of the anti-detachment ring is in clearance fit with the outer wall of the glass sampling tube (5) to limit the axial displacement of the glass sampling tube (5) and buffer vibration impact.

4. The adjustable sealed gas sampling port connection device as described in claim 1, characterized in that: The stainless steel compensating core connector (1) has a tapered diameter reduction channel inside, which is used to reduce the diameter of the glass sampling tube (5) from DN25 to DN15.

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