CN220381087U

CN220381087U - Protective gas switching structure of micro oxygen analyzer

Info

Publication number: CN220381087U
Application number: CN202321567532.4U
Authority: CN
Inventors: 吴小杭; 谭力; 王小万; 施家浩; 严锦鸿; 武鸿斌
Original assignee: Fujian Bohong New Energy Technology Co ltd
Current assignee: Fujian Bohong New Energy Technology Co ltd
Priority date: 2023-06-20
Filing date: 2023-06-20
Publication date: 2024-01-23
Anticipated expiration: 2033-06-20

Abstract

The utility model discloses a trace oxygen analyzer shielding gas switching structure, which comprises: the analyzer, analyzer one side is provided with the tee bend valve, tee bend valve both ends all communicate there is the connecting pipe, two connecting pipe one end all communicates there is horizontal pipe, two horizontal pipe one end all installs the valve, two valve one end communicates respectively has sampling tube and nitrogen pipe, all install the butterfly valve on sampling tube and the nitrogen pipe, the disk seat is installed to the butterfly valve lateral wall, install the valve rod on the disk seat, the sleeve is all installed to the disk seat both sides, two the movable rod is all installed to the sleeve inside, two movable rod one end all passes sleeve one end and all extends to the outside and install the connecting plate, connecting plate lateral wall fixedly connected with locating piece, the locating lever is installed to the locating piece lateral wall. Through the structure, the plurality of valves, the three-way valve and the butterfly valve are matched, so that the pipeline keeps tightness when gas is conveyed, and leakage is avoided.

Description

Protective gas switching structure of micro oxygen analyzer

Technical Field

The utility model relates to the technical field of gas analysis equipment, in particular to a protective gas switching structure of a micro oxygen analyzer.

Background

In normal production, a trace oxygen analyzer is used in an oxygen plant to analyze the oxygen content of nitrogen and argon. During the shutdown maintenance, no sampling gas is needed, shutdown is needed, the analyzer has a plurality of joints, the sealing tightness in the instrument pipeline cannot be ensured, and the analyzer needs to be fully protected by protecting gas.

In the prior art, the analyzer is only provided with one valve, when no nitrogen protection exists, the analyzer can only be tightly closed when the machine is stopped, but each branch pipe cannot guarantee no air leakage, if the air leakage damages a trace oxygen sensor, the cost of a nitrogen passing cylinder is too high, and the nitrogen passing cylinder is too wasteful, and the valve on the existing analyzer is lack of positioning on a valve rod when in use, and the valve core is easy to loosen under the action of pressure, so that the leakage of air occurs.

Disclosure of Invention

The utility model aims to solve the technical problems that in the prior art, the analyzer only has one valve, and when the analyzer is not protected by nitrogen, the analyzer can only be tightly closed during shutdown, but each branch pipe cannot ensure no air leakage by providing a micro oxygen analyzer protective gas switching structure.

To achieve the above object, there is provided a trace oxygen analyzer shielding gas switching structure comprising: the analyzer comprises an analyzer, wherein one side of the analyzer is provided with a three-way valve, two ends of the three-way valve are respectively communicated with connecting pipes, one ends of the two connecting pipes are respectively communicated with a transverse pipe, one ends of the two transverse pipes are respectively provided with a valve, one ends of the two valves are respectively communicated with a sampling pipe and a nitrogen pipe, the sampling pipe and the nitrogen pipe are respectively provided with butterfly valves, the two connecting pipes are connected with the transverse pipes, and the two valves are respectively connected with the sampling pipe and the nitrogen pipe, so that leakage is avoided;

valve seat is installed to the butterfly valve lateral wall, install the valve rod on the disk seat, the sleeve is all installed to the disk seat both sides, two movable rod is all installed to the sleeve inside, two movable rod one end all passes sleeve one end and all extends to outside and install the connecting plate, connecting plate lateral wall fixedly connected with locating piece, the locating lever is installed to the locating piece lateral wall, a plurality of locating hole has been seted up to the valve rod lateral wall, utilizes the movable rod to connect with the connecting plate, makes the locating lever and the locating hole of locating piece lateral wall cooperate to fix a position the valve rod, makes the valve rod remain stable after the control case.

According to the trace oxygen analyzer protective gas switching structure, the valve core is arranged in the middle of the butterfly valve, and reinforcing rods are arranged on two sides of the valve core, so that the strength of the valve core is improved conveniently.

According to the trace oxygen analyzer protective gas switching structure, springs are arranged in the two sleeves, limiting plates are arranged at one ends of the two springs, the side walls of the limiting plates are fixedly connected with one ends of the movable rods respectively, the movable rods are driven to move by the aid of elasticity of the springs, and accordingly the positioning rods are matched with the positioning holes.

According to the trace oxygen analyzer protective gas switching structure, the two limiting plate side walls are in sliding connection with the inner wall of the sleeve.

According to the trace oxygen analyzer shielding gas switching structure, the positioning rod is matched with the positioning hole, and the side wall of the positioning block is arc-shaped and is attached to the outer side of the valve rod.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

The utility model aims to provide a trace oxygen analyzer shielding gas switching structure, which mainly has the following innovation points:

1. the utility model utilizes the three-way valve and the two valves to control the pipeline to avoid gas leakage, and utilizes the two valves to be connected with the sampling pipe for supplying nitrogen, thereby being capable of independently conveying gas when conveying the gas.

2. According to the utility model, the butterfly valve is arranged on the sampling tube and the nitrogen pipe, and the spring is matched with the movable rod, so that the positioning plate drives the positioning rod to be matched with the positioning hole, the valve rod is positioned, the valve rod is kept stable, looseness of the valve core is avoided, and gas leakage is caused.

Drawings

The utility model is further described below with reference to the drawings and examples;

FIG. 1 is a schematic diagram of a switching structure of a trace oxygen analyzer shielding gas according to the present utility model;

FIG. 2 is a schematic view of a butterfly valve of a trace oxygen analyzer shielding gas switching structure of the present utility model;

FIG. 3 is a cross-sectional view of a trace oxygen analyzer shielding gas switching structure of the present utility model;

fig. 4 is an enlarged view of the utility model at a in fig. 3.

Legend description:

1. an analyzer; 2. a three-way valve; 3. a connecting pipe; 4. a transverse tube; 5. a sampling tube; 6. butterfly valve; 7. a nitrogen pipe; 8. a valve; 9. a valve stem; 10. a connecting plate; 11. a positioning block; 12. a movable rod; 13. a sleeve; 14. a valve core; 15. a reinforcing rod; 16. positioning holes; 17. a limiting plate; 18. a spring; 19. a valve seat.

Detailed Description

Reference will now be made in detail to the present embodiments of the present utility model, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present utility model, but not to limit the scope of the present utility model.

Referring to fig. 1 to 4, a trace oxygen analyzer shielding gas switching structure according to an embodiment of the present utility model includes: the analyzer 1, analyzer 1 one side is provided with three-way valve 2, and three-way valve 2 both ends all communicate and have connecting pipe 3, and two connecting pipe 3 one end all communicate and have horizontal pipe 4, and valve 8 is all installed to two horizontal pipe 4 one ends, and two valve 8 one ends communicate respectively and have sampling tube 5 and nitrogen pipe 7, all install butterfly valve 6 on sampling tube 5 and the nitrogen pipe 7 for the leakproofness of pipeline avoids taking place the gas leakage;

valve seat 19 is installed to butterfly valve 6 lateral wall, install valve rod 9 on the valve seat 19, sleeve 13 is all installed to valve seat 19 both sides, movable rod 12 is all installed to two sleeve 13 interiors, utilize movable rod 12 to drive connecting plate 10 and remove, make the locating lever cooperate with locating hole 16, thereby fix a position valve rod 9, two movable rod 12 one end all pass sleeve 13 one end and all extend to outside and install connecting plate 10, connecting plate 10 lateral wall fixedly connected with locating piece 11, the locating rod is installed to locating piece 11 lateral wall, a plurality of locating hole 16 has been seted up to valve rod 9 lateral wall.

The butterfly valve 6 mid-mounting has case 14, and the reinforcing rod 15 is all installed to case 14 both sides, is convenient for improve the intensity of case 14, and spring 18 is all installed to two sleeve 13 interiors, utilizes the elasticity of spring 18 to drive movable rod 12 and removes, and limiting plate 17 is all installed to two spring 18 one end, and two limiting plate 17 lateral walls respectively with movable rod 12 one end fixed connection, two limiting plate 17 lateral walls and sleeve 13 inner wall sliding connection, locating lever and locating hole 16 mutually support, and locating piece 11 lateral wall is the arc setting, and laminating outside with valve rod 9.

Working principle: in practical use, the butterfly valve 6 is installed at the upper ends of the sampling pipe 5 and the nitrogen pipe 7, and the valve rod 9 of the butterfly valve 6 is matched with the positioning hole 16 by utilizing the positioning rod, so that the valve rod 9 is positioned, the valve rod 9 is kept stable, the elastic force of the spring 18 is utilized to drive the limiting plate 17 to move, the movable rod 12 is driven to move, the movable rod 12 pushes the positioning block 11 to move, the positioning rod is matched with the positioning hole 16, the pipeline is controlled by utilizing the valve 8 and the three-way valve 2, and leakage does not occur when gas is conveyed, so that the reliability and the tightness of the sampling pipe 5 and the nitrogen pipe 7 are improved.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.

Claims

1. Micro oxygen analyzer protection gas switching structure, its characterized in that includes: the device comprises an analyzer (1), wherein one side of the analyzer (1) is provided with a three-way valve (2), two ends of the three-way valve (2) are respectively communicated with a connecting pipe (3), one end of each connecting pipe (3) is respectively communicated with a transverse pipe (4), one end of each transverse pipe (4) is respectively provided with a valve (8), one end of each valve (8) is respectively communicated with a sampling pipe (5) and a nitrogen pipe (7), and each sampling pipe (5) and each nitrogen pipe (7) are respectively provided with a butterfly valve (6);

valve seat (19) are installed to butterfly valve (6) lateral wall, install valve rod (9) on valve seat (19), sleeve (13) are all installed to valve seat (19) both sides, two movable rod (12) are all installed to sleeve (13) inside, two movable rod (12) one end all passes sleeve (13) one end and all extends to outside and install connecting plate (10), connecting plate (10) lateral wall fixedly connected with locating piece (11), locating lever is installed to locating piece (11) lateral wall, a plurality of locating hole (16) have been seted up to valve rod (9) lateral wall.

2. The trace oxygen analyzer shielding gas switching structure according to claim 1, wherein a valve core (14) is installed in the middle of the butterfly valve (6), and reinforcing rods (15) are installed on two sides of the valve core (14).

3. The trace oxygen analyzer shielding gas switching structure according to claim 1, wherein springs (18) are installed inside the two sleeves (13), limiting plates (17) are installed at one ends of the two springs (18), and side walls of the two limiting plates (17) are fixedly connected with one ends of the movable rods (12) respectively.

4. The trace oxygen analyzer shielding gas switching structure according to claim 3, wherein the side walls of the two limiting plates (17) are slidably connected with the inner wall of the sleeve (13).

5. The trace oxygen analyzer shielding gas switching structure according to claim 1, wherein the positioning rod is matched with the positioning hole (16), and the side wall of the positioning block (11) is arc-shaped and is attached to the outer side of the valve rod (9).