Explosion-proof shell of laser gas analyzer

Abstract

The utility model relates to the technical field of laser gas analyzers, and discloses an explosion-proof shell of a laser gas analyzer, which is characterized in that the left side of a shell is provided with a sealing groove II, the inside of the left side of the shell is in threaded connection with an optical shell, the right side of the optical shell is fixedly connected with a connecting seat, and the right side of the connecting seat is fixedly connected with a sealing ring II; a first sealing groove is formed in the right end of the shell, a sight glass cover is in threaded connection with the interior of the right side of the shell, a first sealing ring is fixedly connected to the left side of the sight glass cover, and a connecting ring is fixedly connected to the left end of the sight glass cover. Blocking and weakening are carried out through the threaded combination face between the optical shell and the sight glass cover and the shell, so that the temperature and power of flames are greatly reduced, the flames can be sealed in the shell through the sealing performance of the first sealing ring and the second sealing ring, the situation that generated explosion is conducted to the external environment, and property losses are caused is avoided, and the service life of the sight glass is prolonged. And the safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of laser gas analyzers, in particular to an explosion-proof shell of a laser gas analyzer. Background Art

[0002] Laser gas analyzers measure gas concentration based on the interaction between laser and gas molecules and tunable diode laser absorption spectroscopy technology. This technology has high resolution and sensitivity and is suitable for a variety of environments and application scenarios.

[0003] When using ordinary electronic equipment in explosive gas environments such as petroleum and chemical industries, it is very easy to ignite the flammable and explosive gases in the working environment if there is a fault, thus causing greater property losses. Therefore, the laser gas analyzer used in explosive gas environments needs to be designed with an explosion-proof structure. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides an explosion-proof casing for a laser gas analyzer to solve the problem mentioned in the above background technology that when using a laser gas analyzer in an explosive gas environment such as the petroleum and chemical industries, it is very easy to ignite the flammable and explosive gases in the working environment in the event of a fault, thereby causing greater property losses.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an explosion-proof housing of a laser gas analyzer, comprising a housing, a sealing groove 2 is provided on the left side of the housing, an optical housing is threadedly connected to the inner part of the left side of the housing, a mounting ring is fixedly connected to the inner part of the optical housing, an explosion-proof lens is bonded to the left side of the mounting ring, a connecting seat is fixedly connected to the right side of the optical housing, a sealing ring 2 is fixedly connected to the right side of the connecting seat, a mounting block is fixedly connected to the front and rear sides of the connecting seat, a hand-tightening bolt is threadedly connected to the inner part of the mounting block, a nut is fixedly connected to the left end of the hand-tightening bolt, an auxiliary arm is slidably connected to the inner part of the nut, a cable connector is threadedly connected to the bottom of the housing, a grounding screw is arranged on the left side of the bottom of the housing, a sealing groove 1 is provided on the right end of the housing, a mirror cover is threadedly connected to the inner part of the right side of the housing, a sealing ring 1 is fixedly connected to the left side of the mirror cover, a connecting ring is fixedly connected to the left side of the mirror cover, a connecting ring is fixedly connected to the left end of the mirror cover, and an explosion-proof glass is bonded to the right end of the connecting ring.

[0006] Preferably, the shape and size of the second sealing ring are the same as those of the second sealing groove, and the second sealing ring fits tightly against the inner wall of the second sealing groove.

[0007] By adopting the above technical solution, by setting sealing ring 2, sealing groove 2 and the like in conjunction with the mirror cover, when the mirror cover is threadedly connected to the right end of the shell, sealing ring 2 and sealing groove 2 will be driven to fit tightly together, thereby achieving a sealing effect and preventing explosions caused by faults inside the shell from being transmitted to the outside, thereby reducing property losses and improving safety.

[0008] Preferably, the shape and size of the sealing ring 1 are the same as those of the sealing groove 1, and the sealing ring 1 fits tightly against the inner wall of the sealing groove 1.

[0009] By adopting the above technical solution, a sealing ring 1, a sealing groove 1 and the like are provided for use with the optical housing. When the optical housing is threadedly connected to the left end of the housing, the sealing ring 1 and the sealing groove 1 will be driven to fit tightly together, thereby achieving a sealing effect and preventing explosions caused by failures inside the housing from being transmitted to the outside, thereby reducing property losses and improving safety.

[0010] Preferably, the explosion-proof glass and the connecting ring are bonded together by silicone sealant, and the width of the bonding surface is greater than or equal to 10 mm.

[0011] Preferably, the explosion-proof lens and the mounting ring are bonded together by epoxy resin glue, and the width of the bonding surface is greater than or equal to 10 mm.

[0012] Preferably, the side of the hand-tightening bolt away from the nut is threadedly connected to the left side of the shell, and the screwing depth of the hand-tightening bolt is greater than or equal to 12.5 mm.

[0013] By adopting the above technical solution, a hand-tightening bolt is provided for use with a nut and an auxiliary rod. The staff can drive the hand-tightening bolt to rotate by pushing the auxiliary rod to drive the nut. The hand-tightening bolt can be disassembled and installed without the aid of tools, which is convenient for the staff to use.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The explosion-proof housing of the laser gas analyzer is used in conjunction with a mirror cover, a housing, an optical housing, etc. The flame generated by the explosion is blocked and weakened by the threaded joint surface between the optical housing and the mirror cover and the housing, thereby greatly reducing the temperature and power of the flame. The sealing performance of the sealing ring 1 and the sealing ring 2 can seal the flame inside the housing to prevent the explosion from being transmitted to the external environment and causing property loss, thereby improving safety.

[0016] 2. The explosion-proof housing of the laser gas analyzer is used in conjunction with a mirror cover, a shell, an optical shell, etc. The hand-tightening bolt can be rotated by pushing the auxiliary rod to drive the nut to remove the hand-tightening bolt. The staff can unscrew the optical shell from the shell by holding and rotating it. The mirror cover can also be removed by the same operation. The shell can be disassembled and installed without the help of tools, which is convenient for the staff to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the positive cross-section structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the utility model from top view;

[0020] Figure 4 This is a schematic diagram of the optical housing structure of the utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the hand-tightened bolt of the utility model;

[0022] Figure 6 It is a schematic diagram of the structure of the mirror cover of the utility model.

[0023] In the figure: 1. Shell; 2. Sealing groove 1; 3. Sealing groove 2; 4. Optical housing; 5. Explosion-proof lens; 6. Mounting block; 7. Sealing ring 2; 8. Mounting ring; 9. Thumb bolt; 10. Auxiliary rod; 11. Nut; 12. Cable connector; 13. Grounding screw; 14. Mirror cover; 15. Sealing ring 1; 16. Connecting ring; 17. Explosion-proof glass; 18. Connecting seat. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Embodiment 1:

[0026] Please refer to Figure 1-5, an explosion-proof housing of a laser gas analyzer, comprising a housing 1, a sealing groove 23 is provided on the left side of the housing 1, an optical housing 4 is connected to the inner thread of the left side of the housing 1, a mounting ring 8 is fixedly connected to the inner part of the optical housing 4, an explosion-proof lens 5 is bonded to the left side of the mounting ring 8, a connecting seat 18 is fixedly connected to the right side of the optical housing 4, a sealing ring 27 is fixedly connected to the right side of the connecting seat 18, the shape and size of the sealing ring 27 are the same as the shape and size of the sealing groove 23, and the sealing ring 27 is tightly fitted with the inner wall of the sealing groove 23, a mounting block 6 is fixedly connected to the front and rear sides of the connecting seat 18, a hand-tightening bolt 9 is connected to the inner thread of the mounting block 6, a nut 11 is fixedly connected to the left end of the hand-tightening bolt 9, and the nut 1 1 is slidably connected with an auxiliary arm, the bottom of the shell 1 is threadedly connected with a cable connector 12, a grounding screw 13 is arranged on the left side of the bottom of the shell 1, a sealing groove 2 is opened at the right end of the shell 1, a mirror cover 14 is threadedly connected to the right internal of the shell 1, a sealing ring 15 is fixedly connected to the left side of the mirror cover 14, the shape and size of the sealing ring 15 are the same as those of the sealing groove 2, and the sealing ring 15 is tightly fitted with the inner wall of the sealing groove 2, a connecting ring 16 is fixedly connected to the left end of the mirror cover 14, an explosion-proof glass 17 is bonded to the right end of the connecting ring 16, the explosion-proof glass 17 and the connecting ring 16 are bonded by silicone sealant, and the width of the bonding surface is greater than or equal to 10 mm.

[0027] Working principle: When in use, the mirror cover 14 is threadedly connected to the right end of the shell 1, driving the sealing ring 27 to fit tightly with the sealing groove 23, and the optical shell 4 is threadedly connected to the left end of the shell 1, driving the sealing ring 15 to fit tightly with the sealing groove 2. When the circuit inside the shell 1 fails and an explosion occurs, the flame generated by the explosion will first be blocked and weakened by the threaded joint surface between the optical shell 4 and the mirror cover 14 and the shell 1, thereby greatly reducing the temperature and power of the flame. At this time, the flame can be sealed inside the shell 1 through the sealing of the sealing ring 15 and the sealing ring 27, thereby preventing the explosion caused by the failure of the internal circuit from being transmitted to the external environment and causing property loss, thereby improving safety.

[0028] Compared with the related art, the explosion-proof housing of the laser gas analyzer provided by the utility model has the following beneficial effects: by setting the mirror cover 14, the shell 1, the optical shell 4 and the like for use in combination, the flame generated by the explosion is blocked and weakened by the threaded joint surfaces between the optical shell 4 and the mirror cover 14 and the shell 1, thereby greatly reducing the temperature and power of the flame, and the flame can be sealed inside the shell 1 through the sealing performance of the sealing ring 15 and the sealing ring 2 7, preventing the generated explosion from being transmitted to the external environment and causing property loss, thereby improving safety.

[0029] Embodiment 2:

[0030] Please refer to Figure 1-6 The left side of the shell 1 is internally threadedly connected to the optical shell 4, the right side of the optical shell 4 is fixedly connected to the connecting seat 18, the front and rear sides of the connecting seat 18 are fixedly connected to the mounting block 6, the internal thread of the mounting block 6 is connected to the hand bolt 9, the left end of the hand bolt 9 is fixedly connected to the nut 11, the inside of the nut 11 is slidably connected to the auxiliary arm, the side of the hand bolt 9 away from the nut 11 is threadedly connected to the left side of the shell 1, and the hand bolt 9 is screwed in to a depth greater than or equal to 12.5 mm, and the right side of the shell 1 is internally threadedly connected to the mirror cover 14.

[0031] Working principle: When the shell 1 needs to be disassembled for maintenance, the staff can drive the nut 11 by pushing the auxiliary rod 10 to drive the hand bolt 9 to rotate, and then remove the hand bolt 9. At this time, the staff can hold the optical shell 4 and rotate it to unscrew the optical shell 4 from the shell 1. The same operation can also be used to remove the mirror cover 14. At this time, the staff can carry out maintenance work, and the shell 1 can be disassembled and installed without the help of tools, which is convenient for the staff to use.

[0032] Compared with the related art, the explosion-proof housing of a laser gas analyzer provided by the utility model has the following beneficial effects: by setting a mirror cover 14, a shell 1, an optical shell 4, etc. for use in combination, the hand bolt 9 can be driven to rotate by pushing the auxiliary rod 10 to drive the nut 11 to remove the hand bolt 9, and the staff can unscrew the optical shell 4 from the shell 1 by holding the optical shell 4 and rotating it, and the mirror cover 14 can be removed by the same operation, and the shell 1 can be disassembled and installed without the aid of tools, which is convenient for the staff to use.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An explosion-proof housing for a laser gas analyzer, comprising a housing (1), characterized in that: The left side of the shell (1) is provided with a sealing groove 2 (3); the left side of the shell (1) is internally threadedly connected to an optical housing (4); the interior of the optical housing (4) is fixedly connected to a mounting ring (8); the left side of the mounting ring (8) is bonded with an explosion-proof lens (5); the right side of the optical housing (4) is fixedly connected to a connecting seat (18); the right side of the connecting seat (18) is fixedly connected to a sealing ring 2 (7); the front and rear sides of the connecting seat (18) are fixedly connected to a mounting block (6); the interior of the mounting block (6) is threadedly connected to a hand-tightening bolt (9); the left side of the hand-tightening bolt (9) is fixedly connected to the optical housing (4 ... The end of the housing (1) is fixedly connected with a nut (11), the interior of the nut (11) is slidably connected with an auxiliary arm, the bottom of the housing (1) is threadedly connected with a cable connector (12), the bottom left of the housing (1) is provided with a grounding screw (13), the right end of the housing (1) is provided with a sealing groove (2), the right internal end of the housing (1) is threadedly connected with a mirror cover (14), the left side of the mirror cover (14) is fixedly connected with a sealing ring (15), the left end of the mirror cover (14) is fixedly connected with a connecting ring (16), and the right end of the connecting ring (16) is bonded with an explosion-proof glass (17).

2. The explosion-proof housing of a laser gas analyzer according to claim 1, characterized in that: The shape and size of the second sealing ring (7) are the same as those of the second sealing groove (3), and the second sealing ring (7) is tightly fitted to the inner wall of the second sealing groove (3).

3. The explosion-proof housing of a laser gas analyzer according to claim 1, characterized in that: The shape and size of the sealing ring 1 (15) are the same as those of the sealing groove 1 (2), and the sealing ring 1 (15) fits tightly against the inner wall of the sealing groove 1 (2).

4. The explosion-proof housing of a laser gas analyzer according to claim 1, characterized in that: The explosion-proof glass (17) and the connecting ring (16) are bonded together by silicone sealant, and the width of the bonding surface is greater than or equal to 10 mm.

5. The explosion-proof housing of a laser gas analyzer according to claim 1, characterized in that: The explosion-proof lens (5) and the mounting ring (8) are bonded together by epoxy resin glue, and the width of the bonding surface is greater than or equal to 10 mm.

6. The explosion-proof housing of a laser gas analyzer according to claim 1, characterized in that: The side of the hand-tightening bolt (9) away from the nut (11) is threadedly connected to the left side of the housing (1), and the screwing depth of the hand-tightening bolt (9) is greater than or equal to 12.5 mm.

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