A multi-channel gas circuit quick plug-in and centralized sealing device

Abstract

The present invention discloses a multi-channel gas path quick plug-in centralized sealing device, which includes a fixed-end guide block, with a plurality of first gas path channels arranged in parallel, an installation of a fixed-end gas source nozzle, the fixed-end gas source nozzle is inserted into the first gas path channel from above, and extends downward through the end of the first gas path channel to a detachable-end sealing block; a sealing plate, clamped between the fixed-end guide block and the detachable-end sealing block, is provided with a plurality of parallel through holes corresponding to the first gas path channels above, and the through holes allow the bottom of the fixed-end gas source nozzle to pass through; and a detachable-end sealing block, which is provided with a plurality of parallel second gas path channels corresponding to the through holes of the sealing plate above; the bottom end of the fixed-end gas source nozzle is inserted into the upper section of the second gas path channel of the detachable-end sealing block, and the detachable-end nozzle is inserted into the second gas path channel from below, and the fixed-end gas source nozzle is connected through the second gas path channel. The present invention is not sensitive to the axial installation distance and can achieve quick installation and separation of the gas path seal.

Description

Technical Field

[0001] The present invention belongs to the technical field of gas pressure measurement, and particularly relates to a multi-channel gas circuit quick plug-in and centralized sealing device. Background Art

[0002] The measurement of gas pressure and wind pressure of gases such as air is an essential content in many modern industrial productions and daily lives. Gas pressure is a physical quantity that cannot be directly measured and can only be indirectly obtained by measuring certain characteristic values of substances. When obtaining this physical quantity, it is necessary to avoid the influence of leakage during the acquisition process on the measurement result. Therefore, the drainage sealing after gas source acquisition is particularly important. For fixed end-face seals, currently, end-face combined gaskets, O-rings and other forms of end-face static seals are adopted.

[0003] However, due to the application fields and actual measurement requirements, in many cases, it is necessary to achieve quick sealing of multiple gas circuits and multiple channels. Using traditional end-face seals is time-consuming and laborious, and the end-face seal is extremely sensitive to the gap between the two parts at the sealing location (0 gap). If there is a gap in the sealing end face, there may be air leakage, resulting in a deviation between the measured value and the actual value, causing measurement errors. When the air pressure is high, the measurement mechanism structure is long and it is a thin-walled part, it often causes deformation due to the deformation caused by pressure or its own deflection, resulting in a gap at the combined end face and unreliable sealing. Summary of the Invention

[0004] In order to solve the above problems, the present invention proposes a multi-channel gas circuit quick plug-in and centralized sealing device, which is not sensitive to the axial installation distance and can achieve quick installation and separation of gas circuit seals.

[0005] To achieve the above object, the technical solution adopted by the present invention is: a multi-channel gas circuit quick plug-in and centralized sealing device, comprising:

[0006] A fixed-end guide block, inside which a plurality of first gas circuit channels are arranged in parallel. The first gas circuit channels are used for installing fixed-end gas source nozzles. The fixed-end gas source nozzles are inserted into the first gas circuit channels from above, and the ends of the first gas circuit channels extend downward to a detachable end sealing block;

[0007] A sealing plate, clamped between the fixed-end guide block and the detachable end sealing block, is provided with a plurality of parallel through holes corresponding to the first gas circuit channels above. The through holes allow the bottoms of the fixed-end gas source nozzles to pass through;

[0008] And a detachable end sealing block, which is arranged below the fixed-end guiding block and the sealing plate, and is provided with a plurality of second air passage channels arranged side by side and corresponding to the through holes of the upper sealing plate; the bottom end of the fixed-end air source nozzle is inserted into the upper section of the second air passage channel of the detachable end sealing block, and the detachable end nozzle is inserted from below into the second air passage channel, and the fixed-end air source nozzle is communicated through the second air passage channel.

[0009] Furthermore, the fixed-end air source nozzle includes a measuring-end air source nozzle, a guiding section, a connecting section, an inner sealing nozzle section and a nozzle sphere, and the measuring-end air source nozzle, the guiding section, the connecting section, the inner sealing nozzle section and the nozzle sphere are connected in sequence;

[0010] The measuring-end air source nozzle is placed outside above the fixed-end guiding block, the guiding section is inserted into the upper section of the first air passage channel, the connecting section is connected with the lower section of the first air passage channel, and the inner sealing nozzle section penetrates through the sealing plate and extends into the upper section of the second air passage channel.

[0011] Furthermore, internal threads are provided on at least part of the inner wall of the air passage channel, and are matched with the external thread connecting section provided on the connecting section of the fixed-end air source nozzle.

[0012] Furthermore, at least part of the air passage channel is a guiding counterbore, and the guiding counterbore is matched with the cylindrical guiding section adopted by the fixed-end air source nozzle.

[0013] Furthermore, a fixed-end anti-loosening gasket is provided at the top of the first air passage channel.

[0014] Furthermore, a radial sealing ring is also provided, and the radial sealing ring is encapsulated at the top entrance of the second air passage channel of the detachable end sealing block.

[0015] Furthermore, a cavity for containing the radial sealing ring is provided at the encapsulation position of the radial sealing ring for the axial movement of the radial sealing ring.

[0016] Furthermore, the end face of the through hole of the sealing plate is set as a V-shaped guiding port, and the hole opening is rounded.

[0017] Furthermore, a round hole with a diameter larger than the outer diameter of the pipe wall of the extending part of the fixed-end air source nozzle is provided at the lower end of the V-shaped guiding port, and the diameter of the round hole is smaller than that of the radial sealing ring.

[0018] Furthermore, an end face gasket is provided at the bottom of the second air passage channel.

[0019] The beneficial effects of adopting this technical solution:

[0020] The present invention adopts a radial sealing form. By setting a fixed-end guiding block, a sealing plate, and a detachable-end sealing block, the fixed-end gas source nozzle and the detachable-end nozzle are connected, effectively avoiding the possibility of leakage caused by axial clearance and ensuring the accuracy of detection data.

[0021] When the present invention adopts radial sealing, the position accuracy during axial insertion and the risk of scratching the seal during insertion need to be considered. The nozzle of the present invention uses thread fixation, cylindrical-end guiding and limiting, spherical-end face anti-scratching, the sealing plate uses a V-shaped opening for introduction, and small holes prevent the sealing ring from coming off and also have the function of a retaining ring. Brief Description of the Drawings

[0022] Figure 1 It is a schematic flow diagram of a multi-channel gas circuit quick plug-in and centralized sealing device of the present invention;

[0023] Figure 2 It is a schematic structural diagram of the fixed-end gas source nozzle in the embodiment of the present invention;

[0024] Figure 3 It is a partial schematic diagram of the through hole of the sealing plate in the embodiment of the present invention;

[0025] Among them, 1 is the fixed-end guiding block, 2 is the fixed-end gas source nozzle, 3 is the fixed-end anti-loosening gasket, 4 is the sealing plate, 5 is the detachable-end sealing block, 6 is the detachable-end nozzle, 7 is the radial sealing ring, 8 is the end face sealing gasket; 21 is the measuring-end gas source nozzle, 22 is the guiding section, 23 is the connecting section, 24 is the nozzle section at the internal sealing part, 25 is the nozzle sphere; 41 is the V-shaped guiding opening, 42 is the round hole. Detailed Embodiment

[0026] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described below with reference to the drawings.

[0027] In this embodiment, as shown in Figure 1 The present invention proposes a multi-channel gas circuit quick plug-in and centralized sealing device. A multi-channel gas circuit quick plug-in and centralized sealing device includes:

[0028] The fixed-end guiding block 1 is internally provided with a plurality of first gas circuit channels in parallel. The first gas circuit channels are used to install the fixed-end gas source nozzle 2. The fixed-end gas source nozzle 2 is inserted into the first gas circuit channels from above and extends downward through the end of the first gas circuit channels to the detachable-end sealing block 5;

[0029] The sealing plate 4 is clamped between the fixed-end guiding block 1 and the detachable-end sealing block 5, and is provided with a plurality of parallel through holes corresponding to the first gas circuit channels above. The through holes allow the bottom of the fixed-end gas source nozzle 2 to pass through;

[0030] and a detachable end sealing block 5, which is arranged below the fixed end guiding block 1 and the sealing plate 4, and is provided with a plurality of second air passage channels arranged side by side and corresponding to the through holes of the upper sealing plate 4; the bottom end of the fixed end air source nozzle 2 is inserted into the upper section of the second air passage channel of the detachable end sealing block 5, and the detachable end nozzle 6 is inserted into the second air passage channel from below, and the fixed end air source nozzle 2 is communicated through the second air passage channel.

[0031] As an optimized solution of the above embodiment, as Figure 2 shown, the fixed end air source nozzle 2 includes a measurement end air source nozzle 21, a guiding section 22, a connecting section 23, an inner sealing nozzle section 24 and a nozzle sphere 25, and the measurement end air source nozzle 21, the guiding section 22, the connecting section 23, the inner sealing nozzle section 24 and the nozzle sphere 25 are connected in sequence;

[0032] the measurement end air source nozzle 21 is placed outside above the fixed end guiding block 1, the guiding section 22 is inserted into the upper section of the first air passage channel, the connecting section 23 is connected to the lower end section of the first air passage channel, and the inner sealing nozzle section 24 passes through the sealing plate 4 and extends into the upper section of the second air passage channel.

[0033] Preferably, internal threads are provided on at least part of the inner wall of the air passage channel, which are matched with the external thread connecting section provided on the connecting section 23 of the fixed end air source nozzle 2. The threads serve to fix the air source nozzle.

[0034] Preferably, at least part of the air passage channel is a guiding counterbore, and the guiding counterbore is matched with the cylindrical guiding section of the fixed end air source nozzle 2 to ensure a small clearance fit between the guiding counterbore and the guiding cylindrical section of the air source nozzle.

[0035] By arranging a plurality of air passage channels in the fixed end guiding block 1 and installing the fixed end air source nozzle 2, the installation and positioning accuracy of each channel is ensured, and the internal sealing part of the air source nozzle can be vertically inserted into the detachable end sealing assembly below. The fixed end air source nozzle 2 adopts a ball head design, which can effectively avoid scratching the sealing ring when the nozzle is inserted into the sealing assembly.

[0036] Preferably, a fixed end lock washer 3 is arranged at the top of the first air passage channel to fixedly and sealingly connect the fixed end air source nozzle 2 to the top of the first air passage channel.

[0037] As an optimized solution of the above embodiment, a radial sealing ring 7 is also provided, and the radial sealing ring 7 is encapsulated at the top entrance of the second air passage channel of the detachable end sealing block 5.

[0038] Preferably, as Figure 3As shown in the figure, a cavity for holding the radial sealing ring 7 is provided at the encapsulation position of the radial sealing ring 7 to allow the axial movement of the radial sealing ring 7. Within the design value range, neither the movement of the sealing ring nor the change in the insertion depth of the fixed-end gas source nozzle 2 affects the sealing performance, reducing the sensitivity to the axial installation distance and achieving the expected effect.

[0039] As an optimized solution to the above embodiment, as Figure 3 shown in the figure, to facilitate the smooth insertion of the nozzle section 24 at the internal seal of the fixed-end gas source nozzle 2 into the sealing device, the end face of the through-hole in the sealing plate 4 is provided with a V-shaped guiding port 41, and the hole opening is rounded, which can smoothly guide the nozzle section 24 at the internal seal of the fixed-end gas source nozzle 2 without causing damage.

[0040] A round hole 42 with a diameter larger than the outer diameter of the pipe wall of the inserted part of the fixed-end gas source nozzle 2 is provided at the lower end of the V-shaped guiding port 41. The diameter of the round hole 42 is smaller than that of the radial sealing ring 7. The size of the round hole 42 allows the internal sealing pipe to be inserted smoothly and can also act as a retaining ring. When it is necessary to pull out after measurement, it can ensure that the sealing ring is not taken out.

[0041] As an optimized solution to the above embodiment, an end face gasket 8 is provided at the bottom of the second gas path channel to fixedly and sealingly connect the detachable end nozzle 6 to the bottom of the second gas path channel.

[0042] For a better understanding of the present invention, the working principle of the present invention will be described completely as follows:

[0043] The fixed-end guiding block 1 is used to install the fixed-end gas source nozzle 2. In the fixed-end guiding block 1, a set of threads and guiding counterbores are machined in each gas path channel. The threads serve to fix the gas source nozzle, and the guiding counterbores and the guiding cylindrical section of the gas source nozzle adopt a small clearance fit, ensuring the installation and positioning accuracy of each channel and ensuring that the internal sealing part of the gas source nozzle can be vertically inserted into the detachable end sealing assembly. At the same time, by setting the sealing plate 4 and the detachable end sealing block 5, the fixed-end gas source nozzle 2 and the detachable end nozzle 6 are connected and sealed, effectively avoiding the possibility of leakage caused by axial clearance. It has been verified by tests that no leakage occurs at gas pressures of 6 MPa and below, ensuring the accuracy of the detection data.

[0044] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-channel gas circuit quick plug-in and centralized sealing device, characterized in that, Comprising: A fixed-end guide block (1) with a plurality of first gas path channels arranged in parallel inside. The first gas path channels are used for installing a fixed-end gas source nozzle (2). The fixed-end gas source nozzle (2) is inserted into the first gas path channel from above and extends downward through the end of the first gas path channel towards the detachable-end sealing block (5); A sealing cover plate (4) is clamped between the fixed-end guide block (1) and the detachable-end sealing block (5). The sealing cover plate (4) is provided with a plurality of parallel through holes corresponding to the first gas path channels above. The through holes allow the bottom of the fixed-end gas source nozzle (2) to pass through; And a detachable-end sealing block (5) is arranged below the fixed-end guide block (1) and the sealing cover plate (4). The detachable-end sealing block (5) is provided with a plurality of parallel second gas path channels corresponding to the through holes of the sealing cover plate (4) above. The bottom end of the fixed-end gas source nozzle (2) is inserted into the upper section of the second gas path channel of the detachable-end sealing block (5), and the detachable-end nozzle (6) is inserted into the second gas path channel from below to communicate with the fixed-end gas source nozzle (2) through the second gas path channel.

2. The multi-channel gas path quick plug-in and centralized sealing device according to claim 1, characterized in that, The fixed-end gas source nozzle (2) includes a measurement-end gas source nozzle (21), a guiding section (22), a connecting section (23), an inner-sealing nozzle section (24), and a nozzle sphere (25). The measurement-end gas source nozzle (21), the guiding section (22), the connecting section (23), the inner-sealing nozzle section (24), and the nozzle sphere (25) are connected in sequence; The measurement-end gas source nozzle (21) is placed outside above the fixed-end guide block (1). The guiding section (22) is inserted into the upper section of the first gas path channel. The connecting section (23) is connected to the lower section of the first gas path channel. The inner-sealing nozzle section (24) passes through the sealing cover plate (4) and extends into the upper section of the second gas path channel.

3. The multi-channel gas circuit quick plug-in and centralized sealing device according to claim 2, characterized in that, Internal threads are provided on at least part of the inner wall of the first gas path channel, which cooperate with the external thread connection section provided on the connecting section (23) of the fixed-end gas source nozzle (2).

4. A multi-channel gas path quick plug-in and centralized sealing device according to claim 2, characterized in that, At least part of the first gas path channel is a guiding counterbore, which cooperates with the cylindrical guiding section adopted by the fixed-end gas source nozzle (2).

5. A multi-channel gas path quick plug-in and centralized sealing device according to any one of claims 1-4, characterized in that, A fixed-end anti-loosening gasket (3) is provided at the top of the first gas path channel.

6. The multi-channel gas path quick plug-in and centralized sealing device according to claim 1, characterized in that, A radial sealing ring (7) is also provided. The radial sealing ring (7) is encapsulated at the top entrance of the second gas path channel of the detachable-end sealing block (5).

7. A multi-channel gas circuit quick-disconnect centralized sealing device according to claim 6, characterized in that, A cavity for holding the radial sealing ring (7) is provided at the encapsulation position of the radial sealing ring (7) to allow the axial movement of the radial sealing ring (7).

8. A multi-channel gas circuit quick plug-in and centralized sealing device according to claim 6, characterized in that, The end face of the through hole of the sealing cover plate (4) is set as a V-shaped guiding port (41), and the hole opening is rounded.

9. A multi-channel gas path quick plug-in and centralized sealing device according to claim 8, characterized in that, A round hole (42) with a diameter larger than the outer diameter of the pipe wall of the inserted part of the fixed-end gas source nozzle (2) is provided at the lower end of the V-shaped guiding port (41), and the diameter of the round hole (42) is smaller than that of the radial sealing ring (7).

10. A multi-channel gas path quick-disconnect centralized sealing device according to claim 1, characterized in that, An end face sealing gasket (8) is provided at the bottom of the second gas path channel.

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