Collection joint for detection and analysis of inflation gas

Abstract

The utility model discloses a collection joint for detection and analysis of inflated gas, the collection joint comprises a joint body and three connectors arranged on the joint body, the first connector is communicated with the outside, and the second connector is connected and communicated with a collection container containing gas to be detected; the air source system is communicated with the air inflation system through the air inflation pipe, a connector with a valve is arranged on the air inflation pipe, the third connector can be detachably connected and communicated with the connector, the first connector and the third connector are communicated through the connector body, and air flowing out of the air source system sequentially flows through the third connector and the first connector and then is exhausted. Dust in the connector and the third connector is flushed, so that the dust or water vapor on the collection connector is prevented from being deposited in the collection container to pollute the sampled gas, and the accuracy of the detection and analysis result of the inflated gas is ensured; or the connector body is communicated with the second connector and the third connector, and the gas sequentially flows through the third connector and the second connector and then is collected into the collecting container.

Description

Technical Field

[0001] This application relates to the technical field of sampling devices, and particularly to a collection joint for detecting and analyzing inflated gases. Background Art

[0002] When filling gas cylinders, in order to ensure that the composition of the filled gas meets the product requirements, it is usually necessary to sample and analyze the filled gas in the gas cylinder.

[0003] For sampling gas samples in a high-pressure system, a pressure reducing valve is required to reduce the high-pressure gas to one atmosphere before sampling and collecting it in a high-pressure tubular gas volume bottle.

[0004] However, the high-pressure tubular gas volume bottle is exposed in the workshop for a long time, and dust or water vapor in the workshop will adhere to the inlet valve of the high-pressure tubular gas volume bottle. When sampling the gas in the high-pressure system, the high-pressure gas passes through the inlet valve of the high-pressure tubular gas volume bottle into its interior, which easily causes dust or water vapor to flow into the interior of the high-pressure tubular gas volume bottle synchronously and contaminate the gas sample, affecting the accuracy of the test results.

[0005] Therefore, there is an urgent need for a collection joint for detecting and analyzing inflated gases that can prevent dust or water vapor on the inlet valve of the high-pressure tubular gas volume bottle from flowing into its interior. Summary of the Invention

[0006] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a collection joint for detecting and analyzing inflated gases that can prevent dust or water vapor on the inlet valve of the high-pressure tubular gas volume bottle from flowing into its interior. The technical solutions adopted include:

[0007] A collection joint for detecting and analyzing inflated gases, the collection joint includes a joint body and three connectors provided on the joint body. The first connector is in communication with the outside, and the second connector is connected and in communication with a collection container for containing the gas to be detected;

[0008] The gas source system is connected and in communication with the inflation system through a charging pipe, and an interface with a valve is provided on the charging pipe,

[0009] The third connector can be detachably connected and in communication with the interface, and the joint body conducts the first connector and the third connector, so that the gas flowing out of the gas source system flows through the third connector and the first connector in sequence and then is discharged;

[0010] Or the joint body conducts the second connector and the third connector, so that the gas flows through the third connector and the second connector in sequence and then is collected into the collection container.

[0011] One embodiment of the present utility model solves the technical problem by adopting the following technical solution: The joint body includes a driving member, a housing, and a valve core. The housing has a bar-shaped inner cavity with a circular cross-section. Three connecting heads are arranged on the side wall of the housing and are internally communicated therewith. The valve core is arranged in the inner cavity and is attached to the inner side wall of the housing. The driving member is installed on the joint body and is connected to the valve core. The driving member is used to drive the valve core to move to a first position and a second position within the housing. When the valve core is in the first position, the first connecting head is communicated with the third connecting head. When the valve core is in the second position, the second connecting head is communicated with the third connecting head.

[0012] One embodiment of the present utility model solves the technical problem by adopting the following technical solution: The first connecting head and the third connecting head are arranged on opposite sides of the housing. An annular notch is provided on the outer wall of the valve core. When the valve core moves to the first position, the first connecting head and the third connecting head are aligned with the annular notch.

[0013] One embodiment of the present utility model solves the technical problem by adopting the following technical solution: The second connecting head is arranged at one end of the housing. An L-shaped air outlet channel is provided on the valve core. One end of the air outlet channel penetrates the side wall of the valve core, and the other end extends to penetrate one end of the valve core close to the second connecting head. When the valve core moves to the second position, one end of the air outlet channel is aligned with and communicated with the second connecting head, and the other end is communicated with the third connecting head.

[0014] One embodiment of the present utility model solves the technical problem by adopting the following technical solution: External threads are provided on the outer wall of the interface. A rotatable threaded sleeve is sleeved on the outer wall of the third connecting head. The threaded sleeve is screwed onto the interface so that the interface abuts against the third connecting head.

[0015] Advantages of the present utility model:

[0016] In this application, before sampling, the third connecting head is installed on the interface and communicated therewith. The gas to be sampled flowing out of the gas source system flows out from the valve, flushing the dust at the interface and in the third connecting head, thereby avoiding the dust or water vapor on the collection joint from depositing in the collection container and causing the sampled gas to be contaminated, which is beneficial to ensuring the accuracy of the detection and analysis results of the inflated gas. Description of the Drawings

[0017] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, where:

[0018] Figure 1 is a connection schematic diagram of the collection joint for detecting and analyzing inflated gas described in this application;

[0019] Figure 2 Structural schematic diagram of the collection joint for inflatable gas detection and analysis described in the present application;

[0020] Figure 3 Cross-sectional view of the collection joint for inflatable gas detection and analysis described in the present application in the flushing state;

[0021] Figure 4 Cross-sectional view of the collection joint for inflatable gas detection and analysis described in the present application in the sampling state. Detailed implementation manners

[0022] This part will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the drawings. The function of the drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but it cannot be understood as a limitation on the protection scope of the present utility model.

[0023] In the description of the present utility model, the meaning of "a plurality of" is more than two. Understandings such as "greater than", "less than", and "exceeding" do not include the present number, and understandings such as "above", "below", and "within" include the present number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0024] In the description of the present utility model, it should be understood that for the orientation description, such as the orientation or position relationship indicated by "upper", "lower", "front", "rear", "left", "right", etc., is based on the orientation or position relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model.

[0025] In the present utility model, unless otherwise clearly defined, words such as "set", "installed", and "connected" should be understood in a broad sense. For example, it can be directly connected, or indirectly connected through an intermediate medium; it can be fixedly connected, or detachably connected, and can also be integrally formed; it can be mechanically connected; it can be the communication inside two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in the present utility model in combination with the specific content of the technical solution.

[0026] Refer to Figures 1-3, embodiments of the present application are proposed. The collection joint for inflatable gas detection and analysis described in this embodiment includes a joint body 1 and three connectors provided on the joint body 1. The first connector 11 is in communication with the outside, and the second connector 12 is connected and in communication with a collection container 5 containing the gas to be detected;

[0027] The gas source system 3 is in communication with the inflation system 4 through an inflation pipe. An interface 2 with a valve is provided on the inflation pipe.

[0028] The third connector 13 can be detachably connected and in communication with the interface 2, and the joint body 1 conducts the first connector 11 and the third connector 13, so that the gas flowing out of the gas source system 3 flows through the third connector 13 and the first connector 11 in sequence and then is discharged;

[0029] Or the joint body 1 conducts the second connector 12 and the third connector 13, so that the gas flows through the third connector 13 and the second connector 12 in sequence and then is collected into the collection container 5.

[0030] Refer to the appendix Figure 1 As shown, the gas source system 3 is in communication with the inflation system 4 through an inflation pipe. An interface 2 with a pressure reducing valve and a valve is provided on the inflation pipe. The valve can open or close the interface 2. After the valve is opened, the pressure reducing valve reduces the high-pressure gas in the inflation pipe to one atmosphere and sends it out through the interface 2.

[0031] In the present application, before sampling, the third connector 13 is installed on the interface 2 and in communication with it, the pressure reducing valve is opened, and the valve is opened. The gas to be sampled flowing out of the gas source system 3 flows out of the valve, and the dust at the interface 2 and in the third connector 13 is flushed, so as to avoid the dust or water vapor on the collection joint from depositing in the collection container 5 and causing the sampled gas to be contaminated, thereby facilitating ensuring the accuracy of the inflatable gas detection and analysis results.

[0032] When gas sampling is carried out after the flushing and discharging of the third connector 13 are completed, the second connector and the third connector are conducted, so that the inflatable gas flows into the collection container 5 after being decompressed and is collected.

[0033] After the flushing and discharging of the third connector 13 are completed, the second connector 12 can also be in communication with the atmosphere. The third connector 13 and the second connector 12 are conducted, so that the sampled gas flows through the third connector 13 and the second connector 12 and then is discharged, and the second connector 12 is flushed to avoid dust and water vapor from flowing into the inside of the valve core 16.

[0034] Preferably, the joint body 1 includes a driving member 14, a housing 15, and a valve core 16. The housing 15 has a bar-shaped inner cavity with a circular cross-section. Three connectors are provided on the side wall of the housing 15 and communicate with its interior. The valve core 16 is arranged in the inner cavity and fits against the inner side wall of the housing 15. The driving member 14 is installed on the joint body 1 and connected to the valve core 16. The driving member 14 is used to drive the valve core 16 to move to a first position and a second position within the housing 15. When the valve core 16 is in the first position, the first connector 11 communicates with the third connector 13. When the valve core 16 is in the second position, the second connector 12 communicates with the third connector 13. As shown in the attached drawings, the driving member 14 can be a telescopic cylinder.

[0035] Specifically, the first connector 11 and the third connector 13 are arranged on opposite sides of the housing 15. The outer wall of the valve core 16 is provided with an annular notch 161. When the valve core 16 moves to the first position, the first connector 11 and the third connector 13 are aligned with the annular notch 161. As shown in the attached drawings, when the driving member 14 drives the valve core 16 to move to the first position, the gas flowing out of the gas source system can flow from the third connector 13 through the annular notch 161 and then into the first connector 11 and be discharged.

[0036] Based on the above, further, the second connector 12 is arranged at one end of the housing 15. The valve core 16 is provided with an L-shaped air outlet channel 162. One end of the air outlet channel 162 penetrates the side wall of the valve core 16, and the other end extends to penetrate one end of the valve core 16 close to the second connector 12. When the valve core 16 moves to the second position, one end of the air outlet channel 162 is aligned with and communicates with the third connector 13, and the other end communicates with the second connector 12.

[0037] As shown in the attached drawings, when the valve core 16 moves to the second position, a cavity is formed between the valve core 16 and the end of the housing 15 where the second connector 12 is provided. The high-pressure gas flows through the third connector 13, the air outlet channel 162, and then through the second connector 12 and into the collection container 5 after being decompressed.

[0038] To further prevent dust and water vapor pollution, external threads are provided on the outer wall of the interface 2. A telescopic and rotatable threaded sleeve 6 is sleeved on the outer wall of the third connector 13. The threaded sleeve 6 is screwed onto the interface 2 so that the interface 2 abuts against the third connector 13, avoiding dust on the threaded sleeve 6 from polluting the interior of the connector.

[0039] Certainly, the present utility model is not limited to the above embodiments. Those skilled in the art can make equivalent deformations or substitutions without departing from the spirit of the present utility model, and these equivalent deformations and substitutions are all included within the scope defined by the claims of this application.

Claims

1. A collection connector for inflation gas detection and analysis, characterized in that: The collecting joint comprises a joint body (1) and three connectors arranged on the joint body (1), the first connector (11) being connected to the outside, and the second connector (12) being connected to and in communication with a collecting container (5) containing the gas to be detected; The air source system (3) is connected to the air filling system (4) via an air filling pipe, and the air filling pipe is provided with an interface (2) having a valve. The third connector (13) can be detachably connected to and communicated with the interface (2), and the connector body (1) is connected to the first connector (11) and the third connector (13), so that the gas flowing out of the gas source system (3) flows through the third connector (13) and the first connector (11) in sequence and then is discharged; Or the joint body (1) is connected to the second connector (12) and the third connector (13), so that the gas flows through the third connector (13) and the second connector (12) in sequence and is then collected in the collection container (5).

2. The collecting connector for inflation gas detection and analysis according to claim 1, characterized in that: The connector body (1) comprises a driving member (14), a housing (15) and a valve core (16); the housing (15) has an inner cavity with a circular cross-section and a strip shape; three connectors are arranged on the side wall of the housing (15) and are connected to the interior thereof; the valve core (16) is arranged in the inner cavity and is in contact with the inner wall of the housing (15); the driving member (14) is mounted on the connector body (1) and is connected to the valve core (16); the driving member (14) is used to drive the valve core (16) to move to a first position and a second position in the housing (15); when the valve core (16) is in the first position, the first connector (11) is connected to the third connector (13); when the valve core (16) is in the second position, the second connector (12) is connected to the third connector (13).

3. The collecting connector for inflation gas detection and analysis according to claim 2, characterized in that: The first connector (11) and the third connector (13) are arranged on opposite sides of the housing (15); an annular notch (161) is provided on the outer wall of the valve core (16); when the valve core (16) moves to the first position, the first connector (11) and the third connector (13) are aligned with the annular notch (161).

4. The collecting connector for inflation gas detection and analysis according to claim 3, characterized in that: The second connecting head (12) is arranged at one end of the housing (15); the valve core (16) is provided with an L-shaped air outlet channel (162); one end of the air outlet channel (162) passes through the side wall of the valve core (16), and the other end thereof extends to pass through one end of the valve core (16) close to the second connecting head (12); when the valve core (16) moves to the second position, one end of the air outlet channel (162) is aligned with and connected to the second connecting head (12), and the other end thereof is connected to the third connecting head (13).

5. The collecting connector for inflation gas detection and analysis according to claim 3, characterized in that: An external thread is arranged on the outer wall of the interface (2), a rotatable thread sleeve (6) is sleeved on the outer wall of the third connector (13), and the thread sleeve (6) is screwed on the interface (2) so that the interface (2) and the third connector (13) are butted against each other.

Images